diff options
Diffstat (limited to 'erts/emulator/nifs/common/socket_nif.c')
| -rw-r--r-- | erts/emulator/nifs/common/socket_nif.c | 18649 |
1 files changed, 18649 insertions, 0 deletions
diff --git a/erts/emulator/nifs/common/socket_nif.c b/erts/emulator/nifs/common/socket_nif.c new file mode 100644 index 0000000000..d56b70e3fd --- /dev/null +++ b/erts/emulator/nifs/common/socket_nif.c @@ -0,0 +1,18649 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2018-2019. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * %CopyrightEnd% + * + * ---------------------------------------------------------------------- + * Purpose : The NIF (C) part of the socket interface + * + * All of the nif-functions which are part of the API has two parts. + * The first function is called 'nif_<something>', e.g. nif_open. + * This does the initial validation and argument processing and then + * calls the function that does the actual work. This is called + * 'n<something>'. + * ---------------------------------------------------------------------- + * + * + * This is just a code snippet in case there is need of extra debugging + * + * esock_dbg_printf("DEMONP", "[%d] %s: %T\r\n", + * descP->sock, slogan, + * my_make_monitor_term(env, &monP->mon)); + * + */ + +#define STATIC_ERLANG_NIF 1 + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +/* If we HAVE_SCTP_H and Solaris, we need to define the following in + * order to get SCTP working: + */ +#if (defined(HAVE_SCTP_H) && defined(__sun) && defined(__SVR4)) +#define SOLARIS10 1 +/* WARNING: This is not quite correct, it may also be Solaris 11! */ +#define _XPG4_2 +#define __EXTENSIONS__ +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <stddef.h> +#include <ctype.h> +#include <sys/types.h> +#include <errno.h> +#include <time.h> + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_SYS_UIO_H +#include <sys/uio.h> +#endif + +#ifdef HAVE_NET_IF_DL_H +#include <net/if_dl.h> +#endif + +#ifdef HAVE_IFADDRS_H +#include <ifaddrs.h> +#endif + +#ifdef HAVE_NETPACKET_PACKET_H +#include <netpacket/packet.h> +#endif + +#ifdef HAVE_SYS_UN_H +#include <sys/un.h> +#endif + +/* SENDFILE STUFF HERE IF WE NEED IT... */ + +#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__) +#define __DARWIN__ 1 +#endif + + +#ifdef __WIN32__ +#define STRNCASECMP strncasecmp +#define INCL_WINSOCK_API_TYPEDEFS 1 + +#ifndef WINDOWS_H_INCLUDES_WINSOCK2_H +#include <winsock2.h> +#endif +#include <windows.h> +#include <Ws2tcpip.h> /* NEED VC 6.0 or higher */ + +/* Visual studio 2008+: NTDDI_VERSION needs to be set for iphlpapi.h + * to define the right structures. It needs to be set to WINXP (or LONGHORN) + * for IPV6 to work and it's set lower by default, so we need to change it. + */ +#ifdef HAVE_SDKDDKVER_H +# include <sdkddkver.h> +# ifdef NTDDI_VERSION +# undef NTDDI_VERSION +# endif +# define NTDDI_VERSION NTDDI_WINXP +#endif +#include <iphlpapi.h> + +#undef WANT_NONBLOCKING +#include "sys.h" + + + + +/* AND HERE WE MAY HAVE A BUNCH OF DEFINES....SEE INET DRIVER.... */ + + + + +#else /* ifdef __WIN32__ */ + +#include <sys/time.h> +#ifdef NETDB_H_NEEDS_IN_H +#include <netinet/in.h> +#endif +#include <netdb.h> + +#include <sys/socket.h> +#include <netinet/in.h> + +#ifdef DEF_INADDR_LOOPBACK_IN_RPC_TYPES_H +#include <rpc/types.h> +#endif + +#include <netinet/ip.h> +#include <netinet/tcp.h> +#include <netinet/udp.h> +#include <arpa/inet.h> + +#include <sys/param.h> +#ifdef HAVE_ARPA_NAMESER_H +#include <arpa/nameser.h> +#endif + +#ifdef HAVE_SYS_SOCKIO_H +#include <sys/sockio.h> +#endif + +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif + +#include <net/if.h> + +#ifdef HAVE_SCHED_H +#include <sched.h> +#endif + +#ifdef HAVE_SETNS_H +#include <setns.h> +#endif + +#define HAVE_UDP + +/* SCTP support -- currently for UNIX platforms only: */ +#undef HAVE_SCTP +#if defined(HAVE_SCTP_H) + +#include <netinet/sctp.h> + +/* SCTP Socket API Draft from version 11 on specifies that netinet/sctp.h must + explicitly define HAVE_SCTP in case when SCTP is supported, but Solaris 10 + still apparently uses Draft 10, and does not define that symbol, so we have + to define it explicitly: +*/ +#ifndef HAVE_SCTP +# define HAVE_SCTP +#endif + +/* These changed in draft 11, so SOLARIS10 uses the old MSG_* */ +#if ! HAVE_DECL_SCTP_UNORDERED +# define SCTP_UNORDERED MSG_UNORDERED +#endif +#if ! HAVE_DECL_SCTP_ADDR_OVER +# define SCTP_ADDR_OVER MSG_ADDR_OVER +#endif +#if ! HAVE_DECL_SCTP_ABORT +# define SCTP_ABORT MSG_ABORT +#endif +#if ! HAVE_DECL_SCTP_EOF +# define SCTP_EOF MSG_EOF +#endif + +/* More Solaris 10 fixes: */ +#if ! HAVE_DECL_SCTP_CLOSED && HAVE_DECL_SCTPS_IDLE +# define SCTP_CLOSED SCTPS_IDLE +# undef HAVE_DECL_SCTP_CLOSED +# define HAVE_DECL_SCTP_CLOSED 1 +#endif +#if ! HAVE_DECL_SCTP_BOUND && HAVE_DECL_SCTPS_BOUND +# define SCTP_BOUND SCTPS_BOUND +# undef HAVE_DECL_SCTP_BOUND +# define HAVE_DECL_SCTP_BOUND 1 +#endif +#if ! HAVE_DECL_SCTP_LISTEN && HAVE_DECL_SCTPS_LISTEN +# define SCTP_LISTEN SCTPS_LISTEN +# undef HAVE_DECL_SCTP_LISTEN +# define HAVE_DECL_SCTP_LISTEN 1 +#endif +#if ! HAVE_DECL_SCTP_COOKIE_WAIT && HAVE_DECL_SCTPS_COOKIE_WAIT +# define SCTP_COOKIE_WAIT SCTPS_COOKIE_WAIT +# undef HAVE_DECL_SCTP_COOKIE_WAIT +# define HAVE_DECL_SCTP_COOKIE_WAIT 1 +#endif +#if ! HAVE_DECL_SCTP_COOKIE_ECHOED && HAVE_DECL_SCTPS_COOKIE_ECHOED +# define SCTP_COOKIE_ECHOED SCTPS_COOKIE_ECHOED +# undef HAVE_DECL_SCTP_COOKIE_ECHOED +# define HAVE_DECL_SCTP_COOKIE_ECHOED 1 +#endif +#if ! HAVE_DECL_SCTP_ESTABLISHED && HAVE_DECL_SCTPS_ESTABLISHED +# define SCTP_ESTABLISHED SCTPS_ESTABLISHED +# undef HAVE_DECL_SCTP_ESTABLISHED +# define HAVE_DECL_SCTP_ESTABLISHED 1 +#endif +#if ! HAVE_DECL_SCTP_SHUTDOWN_PENDING && HAVE_DECL_SCTPS_SHUTDOWN_PENDING +# define SCTP_SHUTDOWN_PENDING SCTPS_SHUTDOWN_PENDING +# undef HAVE_DECL_SCTP_SHUTDOWN_PENDING +# define HAVE_DECL_SCTP_SHUTDOWN_PENDING 1 +#endif +#if ! HAVE_DECL_SCTP_SHUTDOWN_SENT && HAVE_DECL_SCTPS_SHUTDOWN_SENT +# define SCTP_SHUTDOWN_SENT SCTPS_SHUTDOWN_SENT +# undef HAVE_DECL_SCTP_SHUTDOWN_SENT +# define HAVE_DECL_SCTP_SHUTDOWN_SENT 1 +#endif +#if ! HAVE_DECL_SCTP_SHUTDOWN_RECEIVED && HAVE_DECL_SCTPS_SHUTDOWN_RECEIVED +# define SCTP_SHUTDOWN_RECEIVED SCTPS_SHUTDOWN_RECEIVED +# undef HAVE_DECL_SCTP_SHUTDOWN_RECEIVED +# define HAVE_DECL_SCTP_SHUTDOWN_RECEIVED 1 +#endif +#if ! HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT && HAVE_DECL_SCTPS_SHUTDOWN_ACK_SENT +# define SCTP_SHUTDOWN_ACK_SENT SCTPS_SHUTDOWN_ACK_SENT +# undef HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT +# define HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT 1 +#endif +/* New spelling in lksctp 2.6.22 or maybe even earlier: + * adaption -> adaptation + */ +#if !defined(SCTP_ADAPTATION_LAYER) && defined (SCTP_ADAPTION_LAYER) +# define SCTP_ADAPTATION_LAYER SCTP_ADAPTION_LAYER +# define SCTP_ADAPTATION_INDICATION SCTP_ADAPTION_INDICATION +# define sctp_adaptation_event sctp_adaption_event +# define sctp_setadaptation sctp_setadaption +# define sn_adaptation_event sn_adaption_event +# define sai_adaptation_ind sai_adaption_ind +# define ssb_adaptation_ind ssb_adaption_ind +# define sctp_adaptation_layer_event sctp_adaption_layer_event +#endif + +/* + * We *may* need this stuff later when we *fully* implement support for SCTP + * + +#if defined(__GNUC__) && defined(HAVE_SCTP_BINDX) +static typeof(sctp_bindx) *esock_sctp_bindx = NULL; +#else +static int (*esock_sctp_bindx) + (int sd, struct sockaddr *addrs, int addrcnt, int flags) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_PEELOFF) +static typeof(sctp_peeloff) *esock_sctp_peeloff = NULL; +#else +static int (*esock_sctp_peeloff) + (int sd, sctp_assoc_t assoc_id) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_GETLADDRS) +static typeof(sctp_getladdrs) *esock_sctp_getladdrs = NULL; +#else +static int (*esock_sctp_getladdrs) + (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_FREELADDRS) +static typeof(sctp_freeladdrs) *esock_sctp_freeladdrs = NULL; +#else +static void (*esock_sctp_freeladdrs)(struct sockaddr *addrs) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_GETPADDRS) +static typeof(sctp_getpaddrs) *esock_sctp_getpaddrs = NULL; +#else +static int (*esock_sctp_getpaddrs) + (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_FREEPADDRS) +static typeof(sctp_freepaddrs) *esock_sctp_freepaddrs = NULL; +#else +static void (*esock_sctp_freepaddrs)(struct sockaddr *addrs) = NULL; +#endif + +*/ + +#endif /* #if defined(HAVE_SCTP_H) */ + + +#ifndef WANT_NONBLOCKING +#define WANT_NONBLOCKING +#endif +#include "sys.h" + +/* Socket stuff */ +#define INVALID_SOCKET -1 +// #define INVALID_EVENT -1 +#define SOCKET_ERROR -1 + +#endif /* ifdef __WIN32__ */ + +#include <erl_nif.h> + +#include "socket_dbg.h" +#include "socket_tarray.h" +#include "socket_int.h" +#include "socket_util.h" + +#if defined(SOL_IPV6) || defined(IPPROTO_IPV6) +#define HAVE_IPV6 +#endif + +/* All platforms fail on malloc errors. */ +#define FATAL_MALLOC + + +/* Debug stuff... */ +#define SOCKET_GLOBAL_DEBUG_DEFAULT FALSE +#define SOCKET_DEBUG_DEFAULT FALSE + +/* Counters and stuff (Don't know where to sent this stuff anyway) */ +#define SOCKET_NIF_IOW_DEFAULT FALSE + + + +/* Socket stuff */ +#define INVALID_EVENT -1 + +#define SOCKET int +#define HANDLE long int + + +/* ============================================================================== + * The IS_SOCKET_ERROR macro below is used for portability reasons. + * While POSIX specifies that errors from socket-related system calls + * should be indicated with a -1 return value, some users have experienced + * non-Windows OS kernels that return negative values other than -1. + * While one can argue that such kernels are technically broken, comparing + * against values less than 0 covers their out-of-spec return values without + * imposing incorrect semantics on systems that manage to correctly return -1 + * for errors, thus increasing Erlang's portability. + */ +#ifdef __WIN32__ +#define IS_SOCKET_ERROR(val) ((val) == SOCKET_ERROR) +#else +#define IS_SOCKET_ERROR(val) ((val) < 0) +#endif + + +/* *** Misc macros and defines *** */ + +/* This macro exist on some (linux) platforms */ +#if !defined(IPTOS_TOS_MASK) +#define IPTOS_TOS_MASK 0x1E +#endif +#if !defined(IPTOS_TOS) +#define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK) +#endif + + +#if defined(TCP_CA_NAME_MAX) +#define SOCKET_OPT_TCP_CONGESTION_NAME_MAX TCP_CA_NAME_MAX +#else +/* This is really excessive, but just in case... */ +#define SOCKET_OPT_TCP_CONGESTION_NAME_MAX 256 +#endif + + +/* *** Socket state defs *** */ + +#define SOCKET_FLAG_OPEN 0x0001 +#define SOCKET_FLAG_ACTIVE 0x0004 +#define SOCKET_FLAG_LISTEN 0x0008 +#define SOCKET_FLAG_CON 0x0010 +#define SOCKET_FLAG_ACC 0x0020 +#define SOCKET_FLAG_BUSY 0x0040 +#define SOCKET_FLAG_CLOSE 0x0080 + +#define SOCKET_STATE_CLOSED (0) +#define SOCKET_STATE_OPEN (SOCKET_FLAG_OPEN) +#define SOCKET_STATE_CONNECTED (SOCKET_STATE_OPEN | SOCKET_FLAG_ACTIVE) +#define SOCKET_STATE_LISTENING (SOCKET_STATE_OPEN | SOCKET_FLAG_LISTEN) +#define SOCKET_STATE_CONNECTING (SOCKET_STATE_OPEN | SOCKET_FLAG_CON) +#define SOCKET_STATE_ACCEPTING (SOCKET_STATE_LISTENING | SOCKET_FLAG_ACC) +#define SOCKET_STATE_CLOSING (SOCKET_FLAG_CLOSE) + +#define IS_CLOSED(d) \ + ((d)->state == SOCKET_STATE_CLOSED) + +/* +#define IS_STATE(d, f) \ + (((d)->state & (f)) == (f)) +*/ + +#define IS_CLOSING(d) \ + (((d)->state & SOCKET_STATE_CLOSING) == SOCKET_STATE_CLOSING) + +#define IS_OPEN(d) \ + (((d)->state & SOCKET_FLAG_OPEN) == SOCKET_FLAG_OPEN) + +#define IS_CONNECTED(d) \ + (((d)->state & SOCKET_STATE_CONNECTED) == SOCKET_STATE_CONNECTED) + +#define IS_CONNECTING(d) \ + (((d)->state & SOCKET_FLAG_CON) == SOCKET_FLAG_CON) + +/* +#define IS_BUSY(d) \ + (((d)->state & SOCKET_FLAG_BUSY) == SOCKET_FLAG_BUSY) +*/ + +#define SOCKET_SEND_FLAG_CONFIRM 0 +#define SOCKET_SEND_FLAG_DONTROUTE 1 +#define SOCKET_SEND_FLAG_EOR 2 +#define SOCKET_SEND_FLAG_MORE 3 +#define SOCKET_SEND_FLAG_NOSIGNAL 4 +#define SOCKET_SEND_FLAG_OOB 5 +#define SOCKET_SEND_FLAG_LOW SOCKET_SEND_FLAG_CONFIRM +#define SOCKET_SEND_FLAG_HIGH SOCKET_SEND_FLAG_OOB + +#define SOCKET_RECV_FLAG_CMSG_CLOEXEC 0 +#define SOCKET_RECV_FLAG_ERRQUEUE 1 +#define SOCKET_RECV_FLAG_OOB 2 +#define SOCKET_RECV_FLAG_PEEK 3 +#define SOCKET_RECV_FLAG_TRUNC 4 +#define SOCKET_RECV_FLAG_LOW SOCKET_RECV_FLAG_CMSG_CLOEXEC +#define SOCKET_RECV_FLAG_HIGH SOCKET_RECV_FLAG_TRUNC + +#define SOCKET_RECV_BUFFER_SIZE_DEFAULT 8192 +#define SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT 1024 +#define SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT 1024 + +#define VT2S(__VT__) (((__VT__) == SOCKET_OPT_VALUE_TYPE_UNSPEC) ? "unspec" : \ + (((__VT__) == SOCKET_OPT_VALUE_TYPE_INT) ? "int" : \ + ((__VT__) == SOCKET_OPT_VALUE_TYPE_BOOL) ? "bool" : \ + "undef")) + +#define SOCKET_OPT_VALUE_TYPE_UNSPEC 0 +#define SOCKET_OPT_VALUE_TYPE_INT 1 +#define SOCKET_OPT_VALUE_TYPE_BOOL 2 + +typedef union { + struct { + // 0 = not open, 1 = open + unsigned int open:1; + // 0 = not conn, 1 = connecting, 2 = connected + unsigned int connect:2; + // unsigned int connecting:1; + // unsigned int connected:1; + // 0 = not listen, 1 = listening, 2 = accepting + unsigned int listen:2; + // unsigned int listening:1; + // unsigned int accepting:1; + /* Room for more... */ + } flags; + unsigned int field; // Make it easy to reset all flags... +} SocketState; + +/* +#define IS_OPEN(d) ((d)->state.flags.open) +#define IS_CONNECTED(d) ((d)->state.flags.connect == SOCKET_STATE_CONNECTED) +#define IS_CONNECTING(d) ((d)->state.flags.connect == SOCKET_STATE_CONNECTING) +*/ + + +/*---------------------------------------------------------------------------- + * Interface constants. + * + * This section must be "identical" to the corresponding socket.hrl + */ + +/* domain */ +#define SOCKET_DOMAIN_LOCAL 1 +#define SOCKET_DOMAIN_INET 2 +#define SOCKET_DOMAIN_INET6 3 + +/* type */ +#define SOCKET_TYPE_STREAM 1 +#define SOCKET_TYPE_DGRAM 2 +#define SOCKET_TYPE_RAW 3 +// #define SOCKET_TYPE_RDM 4 +#define SOCKET_TYPE_SEQPACKET 5 + +/* protocol */ +#define SOCKET_PROTOCOL_IP 1 +#define SOCKET_PROTOCOL_TCP 2 +#define SOCKET_PROTOCOL_UDP 3 +#define SOCKET_PROTOCOL_SCTP 4 +#define SOCKET_PROTOCOL_ICMP 5 +#define SOCKET_PROTOCOL_IGMP 6 + +/* shutdown how */ +#define SOCKET_SHUTDOWN_HOW_RD 0 +#define SOCKET_SHUTDOWN_HOW_WR 1 +#define SOCKET_SHUTDOWN_HOW_RDWR 2 + + +#define SOCKET_OPT_LEVEL_OTP 0 +#define SOCKET_OPT_LEVEL_SOCKET 1 +#define SOCKET_OPT_LEVEL_IP 2 +#define SOCKET_OPT_LEVEL_IPV6 3 +#define SOCKET_OPT_LEVEL_TCP 4 +#define SOCKET_OPT_LEVEL_UDP 5 +#define SOCKET_OPT_LEVEL_SCTP 6 + +#define SOCKET_OPT_OTP_DEBUG 1 +#define SOCKET_OPT_OTP_IOW 2 +#define SOCKET_OPT_OTP_CTRL_PROC 3 +#define SOCKET_OPT_OTP_RCVBUF 4 +#define SOCKET_OPT_OTP_RCVCTRLBUF 6 +#define SOCKET_OPT_OTP_SNDCTRLBUF 7 +#define SOCKET_OPT_OTP_FD 8 +#define SOCKET_OPT_OTP_DOMAIN 0xFF01 // INTERNAL AND ONLY GET +#define SOCKET_OPT_OTP_TYPE 0xFF02 // INTERNAL AND ONLY GET +#define SOCKET_OPT_OTP_PROTOCOL 0xFF03 // INTERNAL AND ONLY GET + +#define SOCKET_OPT_SOCK_ACCEPTCONN 1 +#define SOCKET_OPT_SOCK_BINDTODEVICE 3 +#define SOCKET_OPT_SOCK_BROADCAST 4 +#define SOCKET_OPT_SOCK_DEBUG 6 +#define SOCKET_OPT_SOCK_DOMAIN 7 +#define SOCKET_OPT_SOCK_DONTROUTE 8 +#define SOCKET_OPT_SOCK_KEEPALIVE 10 +#define SOCKET_OPT_SOCK_LINGER 11 +#define SOCKET_OPT_SOCK_OOBINLINE 13 +#define SOCKET_OPT_SOCK_PEEK_OFF 15 +#define SOCKET_OPT_SOCK_PRIORITY 17 +#define SOCKET_OPT_SOCK_PROTOCOL 18 +#define SOCKET_OPT_SOCK_RCVBUF 19 +#define SOCKET_OPT_SOCK_RCVLOWAT 21 +#define SOCKET_OPT_SOCK_RCVTIMEO 22 +#define SOCKET_OPT_SOCK_REUSEADDR 23 +#define SOCKET_OPT_SOCK_REUSEPORT 24 +#define SOCKET_OPT_SOCK_SNDBUF 27 +#define SOCKET_OPT_SOCK_SNDLOWAT 29 +#define SOCKET_OPT_SOCK_SNDTIMEO 30 +#define SOCKET_OPT_SOCK_TIMESTAMP 31 +#define SOCKET_OPT_SOCK_TYPE 32 + +#define SOCKET_OPT_IP_ADD_MEMBERSHIP 1 +#define SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP 2 +#define SOCKET_OPT_IP_BLOCK_SOURCE 3 +#define SOCKET_OPT_IP_DROP_MEMBERSHIP 5 +#define SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP 6 +#define SOCKET_OPT_IP_FREEBIND 7 +#define SOCKET_OPT_IP_HDRINCL 8 +#define SOCKET_OPT_IP_MINTTL 9 +#define SOCKET_OPT_IP_MSFILTER 10 +#define SOCKET_OPT_IP_MTU 11 +#define SOCKET_OPT_IP_MTU_DISCOVER 12 +#define SOCKET_OPT_IP_MULTICAST_ALL 13 +#define SOCKET_OPT_IP_MULTICAST_IF 14 +#define SOCKET_OPT_IP_MULTICAST_LOOP 15 +#define SOCKET_OPT_IP_MULTICAST_TTL 16 +#define SOCKET_OPT_IP_NODEFRAG 17 +#define SOCKET_OPT_IP_PKTINFO 19 +#define SOCKET_OPT_IP_RECVDSTADDR 20 +#define SOCKET_OPT_IP_RECVERR 21 +#define SOCKET_OPT_IP_RECVIF 22 +#define SOCKET_OPT_IP_RECVOPTS 23 +#define SOCKET_OPT_IP_RECVORIGDSTADDR 24 +#define SOCKET_OPT_IP_RECVTOS 25 +#define SOCKET_OPT_IP_RECVTTL 26 +#define SOCKET_OPT_IP_RETOPTS 27 +#define SOCKET_OPT_IP_ROUTER_ALERT 28 +#define SOCKET_OPT_IP_SENDSRCADDR 29 // Same as IP_RECVDSTADDR? +#define SOCKET_OPT_IP_TOS 30 +#define SOCKET_OPT_IP_TRANSPARENT 31 +#define SOCKET_OPT_IP_TTL 32 +#define SOCKET_OPT_IP_UNBLOCK_SOURCE 33 + +#define SOCKET_OPT_IPV6_ADDRFORM 1 +#define SOCKET_OPT_IPV6_ADD_MEMBERSHIP 2 +#define SOCKET_OPT_IPV6_AUTHHDR 3 +#define SOCKET_OPT_IPV6_DROP_MEMBERSHIP 6 +#define SOCKET_OPT_IPV6_DSTOPTS 7 +#define SOCKET_OPT_IPV6_FLOWINFO 11 +#define SOCKET_OPT_IPV6_HOPLIMIT 12 +#define SOCKET_OPT_IPV6_HOPOPTS 13 +#define SOCKET_OPT_IPV6_MTU 17 +#define SOCKET_OPT_IPV6_MTU_DISCOVER 18 +#define SOCKET_OPT_IPV6_MULTICAST_HOPS 19 +#define SOCKET_OPT_IPV6_MULTICAST_IF 20 +#define SOCKET_OPT_IPV6_MULTICAST_LOOP 21 +#define SOCKET_OPT_IPV6_RECVERR 24 +#define SOCKET_OPT_IPV6_RECVPKTINFO 25 // PKTINFO on FreeBSD +#define SOCKET_OPT_IPV6_ROUTER_ALERT 27 +#define SOCKET_OPT_IPV6_RTHDR 28 +#define SOCKET_OPT_IPV6_UNICAST_HOPS 30 +#define SOCKET_OPT_IPV6_V6ONLY 32 + +#define SOCKET_OPT_TCP_CONGESTION 1 +#define SOCKET_OPT_TCP_CORK 2 +#define SOCKET_OPT_TCP_MAXSEG 7 +#define SOCKET_OPT_TCP_NODELAY 9 + +#define SOCKET_OPT_UDP_CORK 1 + +#define SOCKET_OPT_SCTP_ASSOCINFO 2 +#define SOCKET_OPT_SCTP_AUTOCLOSE 8 +#define SOCKET_OPT_SCTP_DISABLE_FRAGMENTS 12 +#define SOCKET_OPT_SCTP_EVENTS 14 +#define SOCKET_OPT_SCTP_INITMSG 18 +#define SOCKET_OPT_SCTP_MAXSEG 21 +#define SOCKET_OPT_SCTP_NODELAY 23 +#define SOCKET_OPT_SCTP_RTOINFO 29 + +/* We should *eventually* use this instead of hard-coding the size (to 1) */ +#define ESOCK_RECVMSG_IOVEC_SZ 1 + + +#define SOCKET_SUPPORTS_OPTIONS 0x0001 +#define SOCKET_SUPPORTS_SCTP 0x0002 +#define SOCKET_SUPPORTS_IPV6 0x0003 + + + +/* =================================================================== * + * * + * Various enif macros * + * * + * =================================================================== */ + +#define SGDBG( proto ) ESOCK_DBG_PRINTF( data.dbg , proto ) +#define SSDBG( __D__ , proto ) ESOCK_DBG_PRINTF( (__D__)->dbg , proto ) + + + +/* =================================================================== * + * * + * Basic socket operations * + * * + * =================================================================== */ + +#ifdef __WIN32__ + +/* *** Windows macros *** */ + +#define sock_accept(s, addr, len) \ + make_noninheritable_handle(accept((s), (addr), (len))) +#define sock_bind(s, addr, len) bind((s), (addr), (len)) +#define sock_close(s) closesocket((s)) +#define sock_close_event(e) WSACloseEvent(e) +#define sock_connect(s, addr, len) connect((s), (addr), (len)) +#define sock_create_event(s) WSACreateEvent() +#define sock_errno() WSAGetLastError() +#define sock_getopt(s,l,o,v,ln) getsockopt((s),(l),(o),(v),(ln)) +#define sock_htons(x) htons((x)) +#define sock_htonl(x) htonl((x)) +#define sock_listen(s, b) listen((s), (b)) +#define sock_name(s, addr, len) getsockname((s), (addr), (len)) +#define sock_ntohs(x) ntohs((x)) +#define sock_open(domain, type, proto) \ + make_noninheritable_handle(socket((domain), (type), (proto))) +#define sock_peer(s, addr, len) getpeername((s), (addr), (len)) +#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag)) +#define sock_recvfrom(s,buf,blen,flag,addr,alen) \ + recvfrom((s),(buf),(blen),(flag),(addr),(alen)) +#define sock_send(s,buf,len,flag) send((s),(buf),(len),(flag)) +#define sock_sendto(s,buf,blen,flag,addr,alen) \ + sendto((s),(buf),(blen),(flag),(addr),(alen)) +#define sock_setopt(s,l,o,v,ln) setsockopt((s),(l),(o),(v),(ln)) +#define sock_shutdown(s, how) shutdown((s), (how)) + + +#define SET_BLOCKING(s) ioctlsocket(s, FIONBIO, &zero_value) +#define SET_NONBLOCKING(s) ioctlsocket(s, FIONBIO, &one_value) +static unsigned long zero_value = 0; +static unsigned long one_value = 1; + + +#else /* !__WIN32__ */ + + +#ifdef HAS_ACCEPT4 +// We have to figure out what the flags are... +#define sock_accept(s, addr, len) accept4((s), (addr), (len), (SOCK_CLOEXEC)) +#else +#define sock_accept(s, addr, len) accept((s), (addr), (len)) +#endif +#define sock_bind(s, addr, len) bind((s), (addr), (len)) +#define sock_close(s) close((s)) +#define sock_close_event(e) /* do nothing */ +#define sock_connect(s, addr, len) connect((s), (addr), (len)) +#define sock_create_event(s) (s) /* return file descriptor */ +#define sock_errno() errno +#define sock_getopt(s,t,n,v,l) getsockopt((s),(t),(n),(v),(l)) +#define sock_htons(x) htons((x)) +#define sock_htonl(x) htonl((x)) +#define sock_listen(s, b) listen((s), (b)) +#define sock_name(s, addr, len) getsockname((s), (addr), (len)) +#define sock_ntohs(x) ntohs((x)) +#define sock_open(domain, type, proto) socket((domain), (type), (proto)) +#define sock_peer(s, addr, len) getpeername((s), (addr), (len)) +#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag)) +#define sock_recvfrom(s,buf,blen,flag,addr,alen) \ + recvfrom((s),(buf),(blen),(flag),(addr),(alen)) +#define sock_recvmsg(s,msghdr,flag) recvmsg((s),(msghdr),(flag)) +#define sock_send(s,buf,len,flag) send((s), (buf), (len), (flag)) +#define sock_sendmsg(s,msghdr,flag) sendmsg((s),(msghdr),(flag)) +#define sock_sendto(s,buf,blen,flag,addr,alen) \ + sendto((s),(buf),(blen),(flag),(addr),(alen)) +#define sock_setopt(s,l,o,v,ln) setsockopt((s),(l),(o),(v),(ln)) +#define sock_shutdown(s, how) shutdown((s), (how)) + +#endif /* !__WIN32__ */ + +#ifdef HAVE_SOCKLEN_T +# define SOCKLEN_T socklen_t +#else +# define SOCKLEN_T size_t +#endif + +#ifdef __WIN32__ +#define SOCKOPTLEN_T int +#else +#define SOCKOPTLEN_T SOCKLEN_T +#endif + +/* We can use the IPv4 def for this since the beginning + * is the same for INET and INET6 */ +#define which_address_port(sap) \ + ((((sap)->in4.sin_family == AF_INET) || \ + ((sap)->in4.sin_family == AF_INET6)) ? \ + ((sap)->in4.sin_port) : -1) + + +typedef struct { + int is_active; + ErlNifMonitor mon; +} ESockMonitor; + +typedef struct { + ErlNifPid pid; // PID of the requesting process + ESockMonitor mon; // Monitor to the requesting process + ERL_NIF_TERM ref; // The (unique) reference (ID) of the request +} SocketRequestor; + +typedef struct socket_request_queue_element { + struct socket_request_queue_element* nextP; + SocketRequestor data; +} SocketRequestQueueElement; + +typedef struct { + SocketRequestQueueElement* first; + SocketRequestQueueElement* last; +} SocketRequestQueue; + + +typedef struct { + /* +++ The actual socket +++ */ + SOCKET sock; + HANDLE event; + + /* +++ Stuff "about" the socket +++ */ + int domain; + int type; + int protocol; + + unsigned int state; + SocketAddress remote; + unsigned int addrLen; + + ErlNifEnv* env; + + /* +++ Controller (owner) process +++ */ + ErlNifPid ctrlPid; + // ErlNifMonitor ctrlMon; + ESockMonitor ctrlMon; + + /* +++ Write stuff +++ */ + ErlNifMutex* writeMtx; + SocketRequestor currentWriter; + SocketRequestor* currentWriterP; // NULL or points to currentWriter + SocketRequestQueue writersQ; + BOOLEAN_T isWritable; + Uint32 writePkgCnt; + Uint32 writeByteCnt; + Uint32 writeTries; + Uint32 writeWaits; + Uint32 writeFails; + + /* +++ Read stuff +++ */ + ErlNifMutex* readMtx; + SocketRequestor currentReader; + SocketRequestor* currentReaderP; // NULL or points to currentReader + SocketRequestQueue readersQ; + BOOLEAN_T isReadable; + ErlNifBinary rbuffer; // DO WE NEED THIS + Uint32 readCapacity; // DO WE NEED THIS + Uint32 readPkgCnt; + Uint32 readByteCnt; + Uint32 readTries; + Uint32 readWaits; + + /* +++ Accept stuff +++ */ + ErlNifMutex* accMtx; + SocketRequestor currentAcceptor; + SocketRequestor* currentAcceptorP; // NULL or points to currentAcceptor + SocketRequestQueue acceptorsQ; + + /* +++ Config & Misc stuff +++ */ + size_t rBufSz; // Read buffer size (when data length = 0) + /* rNum and rNumCnt are used (together with rBufSz) when calling the recv + * function with the Length argument set to 0 (zero). + * If rNum is 0 (zero), then rNumCnt is not used and only *one* read will + * be done. Also, when get'ing the value of the option (rcvbuf) with + * getopt, the value will be reported as an integer. If the rNum has a + * value greater then 0 (zero), then it will instead be reported as {N, BufSz}. + */ + unsigned int rNum; // recv: Number of reads using rBufSz + unsigned int rNumCnt; // recv: Current number of reads (so far) + size_t rCtrlSz; // Read control buffer size + size_t wCtrlSz; // Write control buffer size + BOOLEAN_T iow; // Inform On (counter) Wrap + BOOLEAN_T dbg; + + /* +++ Close stuff +++ */ + ErlNifMutex* closeMtx; + ErlNifPid closerPid; + ESockMonitor closerMon; + ErlNifEnv* closeEnv; + ERL_NIF_TERM closeRef; + BOOLEAN_T closeLocal; + +} SocketDescriptor; + + +/* Global stuff. + */ +typedef struct { + /* These are for debugging, testing and the like */ + // ERL_NIF_TERM version; + // ERL_NIF_TERM buildDate; + BOOLEAN_T dbg; + + BOOLEAN_T iow; // Where do we send this? Subscription? + ErlNifMutex* cntMtx; + Uint32 numSockets; + Uint32 numTypeStreams; + Uint32 numTypeDGrams; + Uint32 numTypeSeqPkgs; + Uint32 numDomainInet; + Uint32 numDomainInet6; + Uint32 numDomainLocal; + Uint32 numProtoIP; + Uint32 numProtoTCP; + Uint32 numProtoUDP; + Uint32 numProtoSCTP; +} SocketData; + + +/* ---------------------------------------------------------------------- + * F o r w a r d s + * ---------------------------------------------------------------------- + */ + + + +static ERL_NIF_TERM nif_info(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_supports(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +/* +This is a *global* debug function (enable or disable for all +operations and all sockets. +static ERL_NIF_TERM nif_debug(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +*/ +static ERL_NIF_TERM nif_open(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_bind(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_connect(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_listen(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_accept(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_send(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_sendto(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_sendmsg(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_recv(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_recvfrom(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_recvmsg(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_close(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_shutdown(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_setopt(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_getopt(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_sockname(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_peername(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_finalize_connection(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_finalize_close(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM nif_cancel(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]); + +static ERL_NIF_TERM nsupports(ErlNifEnv* env, int key); +static ERL_NIF_TERM nsupports_options(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_socket(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_ip(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_ipv6(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_tcp(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_udp(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_options_sctp(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_sctp(ErlNifEnv* env); +static ERL_NIF_TERM nsupports_ipv6(ErlNifEnv* env); + +static ERL_NIF_TERM nopen(ErlNifEnv* env, + int domain, + int type, + int protocol, + char* netns); +static ERL_NIF_TERM nbind(ErlNifEnv* env, + SocketDescriptor* descP, + SocketAddress* sockAddrP, + unsigned int addrLen); +static ERL_NIF_TERM nconnect(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM nlisten(ErlNifEnv* env, + SocketDescriptor* descP, + int backlog); +static ERL_NIF_TERM naccept(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref); +static ERL_NIF_TERM naccept_listening(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref); +static ERL_NIF_TERM naccept_listening_error(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid caller, + int save_errno); +static ERL_NIF_TERM naccept_listening_accept(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + ErlNifPid caller, + SocketAddress* remote); +static ERL_NIF_TERM naccept_accepting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref); +static ERL_NIF_TERM naccept_accepting_current(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref); +static ERL_NIF_TERM naccept_accepting_current_accept(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + SocketAddress* remote); +static ERL_NIF_TERM naccept_accepting_current_error(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + int save_errno); +static ERL_NIF_TERM naccept_accepting_other(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid caller); +static ERL_NIF_TERM naccept_busy_retry(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid* pid, + unsigned int nextState); +static BOOLEAN_T naccept_accepted(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + ErlNifPid pid, + SocketAddress* remote, + ERL_NIF_TERM* result); +static ERL_NIF_TERM nsend(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ErlNifBinary* dataP, + int flags); +static ERL_NIF_TERM nsendto(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ErlNifBinary* dataP, + int flags, + SocketAddress* toAddrP, + unsigned int toAddrLen); +static ERL_NIF_TERM nsendmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ERL_NIF_TERM eMsgHdr, + int flags); +static ERL_NIF_TERM nrecv(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sendRef, + ERL_NIF_TERM recvRef, + int len, + int flags); +static ERL_NIF_TERM nrecvfrom(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + Uint16 bufSz, + int flags); +static ERL_NIF_TERM nrecvmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + Uint16 bufLen, + Uint16 ctrlLen, + int flags); +static ERL_NIF_TERM nclose(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM nshutdown(ErlNifEnv* env, + SocketDescriptor* descP, + int how); +static ERL_NIF_TERM nsetopt(ErlNifEnv* env, + SocketDescriptor* descP, + BOOLEAN_T isEncoded, + BOOLEAN_T isOTP, + int level, + int eOpt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_debug(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_iow(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_ctrl_proc(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_rcvctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_otp_sndctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_native(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int eOpt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_level(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int eOpt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_lvl_socket(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); + + +/* *** Handling set of socket options for level = socket *** */ + +#if defined(SO_BINDTODEVICE) +static ERL_NIF_TERM nsetopt_lvl_sock_bindtodevice(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_BROADCAST) +static ERL_NIF_TERM nsetopt_lvl_sock_broadcast(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_DEBUG) +static ERL_NIF_TERM nsetopt_lvl_sock_debug(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_DONTROUTE) +static ERL_NIF_TERM nsetopt_lvl_sock_dontroute(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_KEEPALIVE) +static ERL_NIF_TERM nsetopt_lvl_sock_keepalive(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_LINGER) +static ERL_NIF_TERM nsetopt_lvl_sock_linger(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_OOBINLINE) +static ERL_NIF_TERM nsetopt_lvl_sock_oobinline(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_PEEK_OFF) +static ERL_NIF_TERM nsetopt_lvl_sock_peek_off(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_PRIORITY) +static ERL_NIF_TERM nsetopt_lvl_sock_priority(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_RCVBUF) +static ERL_NIF_TERM nsetopt_lvl_sock_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_RCVLOWAT) +static ERL_NIF_TERM nsetopt_lvl_sock_rcvlowat(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_RCVTIMEO) +static ERL_NIF_TERM nsetopt_lvl_sock_rcvtimeo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_REUSEADDR) +static ERL_NIF_TERM nsetopt_lvl_sock_reuseaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_REUSEPORT) +static ERL_NIF_TERM nsetopt_lvl_sock_reuseport(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_SNDBUF) +static ERL_NIF_TERM nsetopt_lvl_sock_sndbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_SNDLOWAT) +static ERL_NIF_TERM nsetopt_lvl_sock_sndlowat(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_SNDTIMEO) +static ERL_NIF_TERM nsetopt_lvl_sock_sndtimeo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SO_TIMESTAMP) +static ERL_NIF_TERM nsetopt_lvl_sock_timestamp(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +static ERL_NIF_TERM nsetopt_lvl_ip(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); + +/* *** Handling set of socket options for level = ip *** */ +#if defined(IP_ADD_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ip_add_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_ADD_SOURCE_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ip_add_source_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_BLOCK_SOURCE) +static ERL_NIF_TERM nsetopt_lvl_ip_block_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_DROP_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ip_drop_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_DROP_SOURCE_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ip_drop_source_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_FREEBIND) +static ERL_NIF_TERM nsetopt_lvl_ip_freebind(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_HDRINCL) +static ERL_NIF_TERM nsetopt_lvl_ip_hdrincl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MINTTL) +static ERL_NIF_TERM nsetopt_lvl_ip_minttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE) +static ERL_NIF_TERM nsetopt_lvl_ip_msfilter(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +static BOOLEAN_T decode_ip_msfilter_mode(ErlNifEnv* env, + ERL_NIF_TERM eVal, + Uint32* mode); +static ERL_NIF_TERM nsetopt_lvl_ip_msfilter_set(ErlNifEnv* env, + SOCKET sock, + struct ip_msfilter* msfP, + SOCKLEN_T optLen); +#endif +#if defined(IP_MTU_DISCOVER) +static ERL_NIF_TERM nsetopt_lvl_ip_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MULTICAST_ALL) +static ERL_NIF_TERM nsetopt_lvl_ip_multicast_all(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MULTICAST_IF) +static ERL_NIF_TERM nsetopt_lvl_ip_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MULTICAST_LOOP) +static ERL_NIF_TERM nsetopt_lvl_ip_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_MULTICAST_TTL) +static ERL_NIF_TERM nsetopt_lvl_ip_multicast_ttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_NODEFRAG) +static ERL_NIF_TERM nsetopt_lvl_ip_nodefrag(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_PKTINFO) +static ERL_NIF_TERM nsetopt_lvl_ip_pktinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVDSTADDR) +static ERL_NIF_TERM nsetopt_lvl_ip_recvdstaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVERR) +static ERL_NIF_TERM nsetopt_lvl_ip_recverr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVIF) +static ERL_NIF_TERM nsetopt_lvl_ip_recvif(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVOPTS) +static ERL_NIF_TERM nsetopt_lvl_ip_recvopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVORIGDSTADDR) +static ERL_NIF_TERM nsetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVTOS) +static ERL_NIF_TERM nsetopt_lvl_ip_recvtos(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RECVTTL) +static ERL_NIF_TERM nsetopt_lvl_ip_recvttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_RETOPTS) +static ERL_NIF_TERM nsetopt_lvl_ip_retopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_ROUTER_ALERT) +static ERL_NIF_TERM nsetopt_lvl_ip_router_alert(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_SENDSRCADDR) +static ERL_NIF_TERM nsetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_TOS) +static ERL_NIF_TERM nsetopt_lvl_ip_tos(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_TRANSPARENT) +static ERL_NIF_TERM nsetopt_lvl_ip_transparent(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_TTL) +static ERL_NIF_TERM nsetopt_lvl_ip_ttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IP_UNBLOCK_SOURCE) +static ERL_NIF_TERM nsetopt_lvl_ip_unblock_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif + +#if defined(IP_DROP_MEMBERSHIP) || defined(IP_ADD_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_update_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt); +#endif +#if defined(IP_ADD_SOURCE_MEMBERSHIP) || defined(IP_DROP_SOURCE_MEMBERSHIP) || defined(IP_BLOCK_SOURCE) || defined(IP_UNBLOCK_SOURCE) +static +ERL_NIF_TERM nsetopt_lvl_ip_update_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt); +#endif + + +/* *** Handling set of socket options for level = ipv6 *** */ +#if defined(HAVE_IPV6) +static ERL_NIF_TERM nsetopt_lvl_ipv6(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); +#if defined(IPV6_ADDRFORM) +static ERL_NIF_TERM nsetopt_lvl_ipv6_addrform(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_ADD_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ipv6_add_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_AUTHHDR) +static ERL_NIF_TERM nsetopt_lvl_ipv6_authhdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_DROP_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ipv6_drop_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_DSTOPTS) +static ERL_NIF_TERM nsetopt_lvl_ipv6_dstopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_FLOWINFO) +static ERL_NIF_TERM nsetopt_lvl_ipv6_flowinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_HOPLIMIT) +static ERL_NIF_TERM nsetopt_lvl_ipv6_hoplimit(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_HOPOPTS) +static ERL_NIF_TERM nsetopt_lvl_ipv6_hopopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_MTU) +static ERL_NIF_TERM nsetopt_lvl_ipv6_mtu(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_MTU_DISCOVER) +static ERL_NIF_TERM nsetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_MULTICAST_HOPS) +static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_MULTICAST_IF) +static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_MULTICAST_LOOP) +static ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_RECVERR) +static ERL_NIF_TERM nsetopt_lvl_ipv6_recverr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) +static ERL_NIF_TERM nsetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_ROUTER_ALERT) +static ERL_NIF_TERM nsetopt_lvl_ipv6_router_alert(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_RTHDR) +static ERL_NIF_TERM nsetopt_lvl_ipv6_rthdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_UNICAST_HOPS) +static ERL_NIF_TERM nsetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(IPV6_V6ONLY) +static ERL_NIF_TERM nsetopt_lvl_ipv6_v6only(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif + +#if defined(IPV6_ADD_MEMBERSHIP) || defined(IPV6_DROP_MEMBERSHIP) +static ERL_NIF_TERM nsetopt_lvl_ipv6_update_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt); +#endif + +#endif // defined(HAVE_IPV6) +static ERL_NIF_TERM nsetopt_lvl_tcp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); +#if defined(TCP_CONGESTION) +static ERL_NIF_TERM nsetopt_lvl_tcp_congestion(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(TCP_MAXSEG) +static ERL_NIF_TERM nsetopt_lvl_tcp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(TCP_NODELAY) +static ERL_NIF_TERM nsetopt_lvl_tcp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +static ERL_NIF_TERM nsetopt_lvl_udp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); +#if defined(UDP_CORK) +static ERL_NIF_TERM nsetopt_lvl_udp_cork(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(HAVE_SCTP) +static ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal); +#if defined(SCTP_ASSOCINFO) +static ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_AUTOCLOSE) +static ERL_NIF_TERM nsetopt_lvl_sctp_autoclose(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_DISABLE_FRAGMENTS) +static ERL_NIF_TERM nsetopt_lvl_sctp_disable_fragments(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_EVENTS) +static ERL_NIF_TERM nsetopt_lvl_sctp_events(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_INITMSG) +static ERL_NIF_TERM nsetopt_lvl_sctp_initmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_MAXSEG) +static ERL_NIF_TERM nsetopt_lvl_sctp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_NODELAY) +static ERL_NIF_TERM nsetopt_lvl_sctp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#if defined(SCTP_RTOINFO) +static ERL_NIF_TERM nsetopt_lvl_sctp_rtoinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif +#endif // defined(HAVE_SCTP) + +static ERL_NIF_TERM ngetopt(ErlNifEnv* env, + SocketDescriptor* descP, + BOOLEAN_T isEncoded, + BOOLEAN_T isOTP, + int level, + ERL_NIF_TERM eOpt); +static ERL_NIF_TERM ngetopt_otp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +static ERL_NIF_TERM ngetopt_otp_debug(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_iow(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_ctrl_proc(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_rcvctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_sndctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_fd(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_domain(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_type(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_otp_protocol(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ngetopt_native(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + ERL_NIF_TERM eOpt); +static ERL_NIF_TERM ngetopt_native_unspec(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + SOCKOPTLEN_T valueSz); +static ERL_NIF_TERM ngetopt_level(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int eOpt); +static ERL_NIF_TERM ngetopt_lvl_socket(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(SO_ACCEPTCONN) +static ERL_NIF_TERM ngetopt_lvl_sock_acceptconn(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_BINDTODEVICE) +static ERL_NIF_TERM ngetopt_lvl_sock_bindtodevice(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_BROADCAST) +static ERL_NIF_TERM ngetopt_lvl_sock_broadcast(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_DEBUG) +static ERL_NIF_TERM ngetopt_lvl_sock_debug(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_DOMAIN) +static ERL_NIF_TERM ngetopt_lvl_sock_domain(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_DONTROUTE) +static ERL_NIF_TERM ngetopt_lvl_sock_dontroute(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_KEEPALIVE) +static ERL_NIF_TERM ngetopt_lvl_sock_keepalive(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_LINGER) +static ERL_NIF_TERM ngetopt_lvl_sock_linger(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_OOBINLINE) +static ERL_NIF_TERM ngetopt_lvl_sock_oobinline(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_PEEK_OFF) +static ERL_NIF_TERM ngetopt_lvl_sock_peek_off(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_PRIORITY) +static ERL_NIF_TERM ngetopt_lvl_sock_priority(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_PROTOCOL) +static ERL_NIF_TERM ngetopt_lvl_sock_protocol(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_RCVBUF) +static ERL_NIF_TERM ngetopt_lvl_sock_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_RCVLOWAT) +static ERL_NIF_TERM ngetopt_lvl_sock_rcvlowat(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_RCVTIMEO) +static ERL_NIF_TERM ngetopt_lvl_sock_rcvtimeo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_REUSEADDR) +static ERL_NIF_TERM ngetopt_lvl_sock_reuseaddr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_REUSEPORT) +static ERL_NIF_TERM ngetopt_lvl_sock_reuseport(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_SNDBUF) +static ERL_NIF_TERM ngetopt_lvl_sock_sndbuf(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_SNDLOWAT) +static ERL_NIF_TERM ngetopt_lvl_sock_sndlowat(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_SNDTIMEO) +static ERL_NIF_TERM ngetopt_lvl_sock_sndtimeo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_TIMESTAMP) +static ERL_NIF_TERM ngetopt_lvl_sock_timestamp(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SO_TYPE) +static ERL_NIF_TERM ngetopt_lvl_sock_type(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +static ERL_NIF_TERM ngetopt_lvl_ip(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(IP_FREEBIND) +static ERL_NIF_TERM ngetopt_lvl_ip_freebind(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_HDRINCL) +static ERL_NIF_TERM ngetopt_lvl_ip_hdrincl(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MINTTL) +static ERL_NIF_TERM ngetopt_lvl_ip_minttl(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MTU) +static ERL_NIF_TERM ngetopt_lvl_ip_mtu(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MTU_DISCOVER) +static ERL_NIF_TERM ngetopt_lvl_ip_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MULTICAST_ALL) +static ERL_NIF_TERM ngetopt_lvl_ip_multicast_all(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MULTICAST_IF) +static ERL_NIF_TERM ngetopt_lvl_ip_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MULTICAST_LOOP) +static ERL_NIF_TERM ngetopt_lvl_ip_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_MULTICAST_TTL) +static ERL_NIF_TERM ngetopt_lvl_ip_multicast_ttl(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_NODEFRAG) +static ERL_NIF_TERM ngetopt_lvl_ip_nodefrag(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_PKTINFO) +static ERL_NIF_TERM ngetopt_lvl_ip_pktinfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVDSTADDR) +static ERL_NIF_TERM ngetopt_lvl_ip_recvdstaddr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVERR) +static ERL_NIF_TERM ngetopt_lvl_ip_recverr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVIF) +static ERL_NIF_TERM ngetopt_lvl_ip_recvif(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVOPTS) +static ERL_NIF_TERM ngetopt_lvl_ip_recvopts(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVORIGDSTADDR) +static ERL_NIF_TERM ngetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVTOS) +static ERL_NIF_TERM ngetopt_lvl_ip_recvtos(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RECVTTL) +static ERL_NIF_TERM ngetopt_lvl_ip_recvttl(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_RETOPTS) +static ERL_NIF_TERM ngetopt_lvl_ip_retopts(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_ROUTER_ALERT) +static ERL_NIF_TERM ngetopt_lvl_ip_router_alert(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_SENDSRCADDR) +static ERL_NIF_TERM ngetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_TOS) +static ERL_NIF_TERM ngetopt_lvl_ip_tos(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_TRANSPARENT) +static ERL_NIF_TERM ngetopt_lvl_ip_transparent(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IP_TTL) +static ERL_NIF_TERM ngetopt_lvl_ip_ttl(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(HAVE_IPV6) +static ERL_NIF_TERM ngetopt_lvl_ipv6(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(IPV6_AUTHHDR) +static ERL_NIF_TERM ngetopt_lvl_ipv6_authhdr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_DSTOPTS) +static ERL_NIF_TERM ngetopt_lvl_ipv6_dstopts(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_FLOWINFO) +static ERL_NIF_TERM ngetopt_lvl_ipv6_flowinfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_HOPLIMIT) +static ERL_NIF_TERM ngetopt_lvl_ipv6_hoplimit(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_HOPOPTS) +static ERL_NIF_TERM ngetopt_lvl_ipv6_hopopts(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_MTU) +static ERL_NIF_TERM ngetopt_lvl_ipv6_mtu(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_MTU_DISCOVER) +static ERL_NIF_TERM ngetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_MULTICAST_HOPS) +static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_MULTICAST_IF) +static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_MULTICAST_LOOP) +static ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_RECVERR) +static ERL_NIF_TERM ngetopt_lvl_ipv6_recverr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) +static ERL_NIF_TERM ngetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_ROUTER_ALERT) +static ERL_NIF_TERM ngetopt_lvl_ipv6_router_alert(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_RTHDR) +static ERL_NIF_TERM ngetopt_lvl_ipv6_rthdr(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_UNICAST_HOPS) +static ERL_NIF_TERM ngetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(IPV6_V6ONLY) +static ERL_NIF_TERM ngetopt_lvl_ipv6_v6only(ErlNifEnv* env, + SocketDescriptor* descP); +#endif + +#endif // defined(HAVE_IPV6) + +static ERL_NIF_TERM ngetopt_lvl_tcp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(TCP_CONGESTION) +static ERL_NIF_TERM ngetopt_lvl_tcp_congestion(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(TCP_MAXSEG) +static ERL_NIF_TERM ngetopt_lvl_tcp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(TCP_NODELAY) +static ERL_NIF_TERM ngetopt_lvl_tcp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +static ERL_NIF_TERM ngetopt_lvl_udp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(UDP_CORK) +static ERL_NIF_TERM ngetopt_lvl_udp_cork(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(HAVE_SCTP) +static ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt); +#if defined(SCTP_ASSOCINFO) +static ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_AUTOCLOSE) +static ERL_NIF_TERM ngetopt_lvl_sctp_autoclose(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_DISABLE_FRAGMENTS) +static ERL_NIF_TERM ngetopt_lvl_sctp_disable_fragments(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_MAXSEG) +static ERL_NIF_TERM ngetopt_lvl_sctp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_INITMSG) +static ERL_NIF_TERM ngetopt_lvl_sctp_initmsg(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_NODELAY) +static ERL_NIF_TERM ngetopt_lvl_sctp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#if defined(SCTP_RTOINFO) +static ERL_NIF_TERM ngetopt_lvl_sctp_rtoinfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif +#endif // defined(HAVE_SCTP) +static ERL_NIF_TERM nsockname(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM npeername(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ncancel(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM op, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_connect(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_accept(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_accept_current(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ncancel_accept_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_send(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_send_current(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ncancel_send_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_recv(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_recv_current(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM ncancel_recv_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_read_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_write_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef); +static ERL_NIF_TERM ncancel_mode_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef, + int smode, + int rmode); + +static ERL_NIF_TERM nsetopt_str_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + int max, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_bool_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_int_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal); +static ERL_NIF_TERM nsetopt_timeval_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal); + +static ERL_NIF_TERM ngetopt_str_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + int max); +static ERL_NIF_TERM ngetopt_bool_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt); +static ERL_NIF_TERM ngetopt_int_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt); +static ERL_NIF_TERM ngetopt_timeval_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt); + +static BOOLEAN_T send_check_writer(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ERL_NIF_TERM* checkResult); +static ERL_NIF_TERM send_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + ssize_t written, + ssize_t dataSize, + int saveErrno, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef); +static BOOLEAN_T recv_check_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ERL_NIF_TERM* checkResult); +static char* recv_init_current_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref); +static ERL_NIF_TERM recv_update_current_reader(ErlNifEnv* env, + SocketDescriptor* descP); +static void recv_error_current_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM reason); +static ERL_NIF_TERM recv_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int toRead, + int saveErrno, + ErlNifBinary* bufP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef); +static ERL_NIF_TERM recvfrom_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int saveErrno, + ErlNifBinary* bufP, + SocketAddress* fromAddrP, + unsigned int fromAddrLen, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef); +static ERL_NIF_TERM recvmsg_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int saveErrno, + struct msghdr* msgHdrP, + ErlNifBinary* dataBufP, + ErlNifBinary* ctrlBufP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef); + +static ERL_NIF_TERM nfinalize_connection(ErlNifEnv* env, + SocketDescriptor* descP); +static ERL_NIF_TERM nfinalize_close(ErlNifEnv* env, + SocketDescriptor* descP); + +extern char* encode_msghdr(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + struct msghdr* msgHdrP, + ErlNifBinary* dataBufP, + ErlNifBinary* ctrlBufP, + ERL_NIF_TERM* eSockAddr); +extern char* encode_cmsghdrs(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifBinary* cmsgBinP, + struct msghdr* msgHdrP, + ERL_NIF_TERM* eCMsgHdr); +extern char* decode_cmsghdrs(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eCMsgHdr, + char* cmsgHdrBufP, + size_t cmsgHdrBufLen, + size_t* cmsgHdrBufUsed); +extern char* decode_cmsghdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eCMsgHdr, + char* bufP, + size_t rem, + size_t* used); +static char* encode_cmsghdr_level(ErlNifEnv* env, + int level, + ERL_NIF_TERM* eLevel); +static char* decode_cmsghdr_level(ErlNifEnv* env, + ERL_NIF_TERM eLevel, + int* level); +static char* encode_cmsghdr_type(ErlNifEnv* env, + int level, + int type, + ERL_NIF_TERM* eType); +static char* decode_cmsghdr_type(ErlNifEnv* env, + int level, + ERL_NIF_TERM eType, + int* type); +static char* encode_cmsghdr_data(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int level, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData); +static char* encode_cmsghdr_data_socket(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData); +static char* encode_cmsghdr_data_ip(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData); +#if defined(HAVE_IPV6) +static char* encode_cmsghdr_data_ipv6(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData); +#endif +extern char* encode_msghdr_flags(ErlNifEnv* env, + SocketDescriptor* descP, + int msgFlags, + ERL_NIF_TERM* flags); +static char* decode_cmsghdr_data(ErlNifEnv* env, + SocketDescriptor* descP, + char* bufP, + size_t rem, + int level, + int type, + ERL_NIF_TERM eData, + size_t* used); +static char* decode_cmsghdr_final(SocketDescriptor* descP, + char* bufP, + size_t rem, + int level, + int type, + char* data, + int sz, + size_t* used); +static BOOLEAN_T decode_sock_linger(ErlNifEnv* env, + ERL_NIF_TERM eVal, + struct linger* valP); +#if defined(IP_TOS) +static BOOLEAN_T decode_ip_tos(ErlNifEnv* env, + ERL_NIF_TERM eVal, + int* val); +#endif +#if defined(IP_MTU_DISCOVER) +static char* decode_ip_pmtudisc(ErlNifEnv* env, + ERL_NIF_TERM eVal, + int* val); +#endif +#if defined(IP_MTU_DISCOVER) +static void encode_ip_pmtudisc(ErlNifEnv* env, + int val, + ERL_NIF_TERM* eVal); +#endif +#if defined(IPV6_MTU_DISCOVER) +static char* decode_ipv6_pmtudisc(ErlNifEnv* env, + ERL_NIF_TERM eVal, + int* val); +#endif +#if defined(IPV6_MTU_DISCOVER) +static void encode_ipv6_pmtudisc(ErlNifEnv* env, + int val, + ERL_NIF_TERM* eVal); +#endif + +/* +static BOOLEAN_T decode_bool(ErlNifEnv* env, + ERL_NIF_TERM eVal, + BOOLEAN_T* val); +*/ +static BOOLEAN_T decode_native_get_opt(ErlNifEnv* env, + ERL_NIF_TERM eVal, + int* opt, + Uint16* valueType, + int* valueSz); +// static void encode_bool(BOOLEAN_T val, ERL_NIF_TERM* eVal); +static ERL_NIF_TERM encode_ip_tos(ErlNifEnv* env, int val); + +static void inform_waiting_procs(ErlNifEnv* env, + SocketDescriptor* descP, + SocketRequestQueue* q, + BOOLEAN_T free, + ERL_NIF_TERM reason); + +static int socket_setopt(int sock, + int level, + int opt, + const void* optVal, + const socklen_t optLen); + +static BOOLEAN_T verify_is_connected(SocketDescriptor* descP, int* err); + +static SocketDescriptor* alloc_descriptor(SOCKET sock, HANDLE event); + +static int compare_pids(ErlNifEnv* env, + const ErlNifPid* pid1, + const ErlNifPid* pid2); + + + +static BOOLEAN_T edomain2domain(int edomain, int* domain); +static BOOLEAN_T etype2type(int etype, int* type); +static BOOLEAN_T eproto2proto(ErlNifEnv* env, + const ERL_NIF_TERM eproto, + int* proto); +static BOOLEAN_T ehow2how(unsigned int ehow, int* how); +static BOOLEAN_T esendflags2sendflags(unsigned int esendflags, int* sendflags); +static BOOLEAN_T erecvflags2recvflags(unsigned int erecvflags, int* recvflags); +static BOOLEAN_T elevel2level(BOOLEAN_T isEncoded, + int eLevel, + BOOLEAN_T* isOTP, + int* level); +#ifdef HAVE_SETNS +static BOOLEAN_T emap2netns(ErlNifEnv* env, ERL_NIF_TERM map, char** netns); +static BOOLEAN_T change_network_namespace(char* netns, int* cns, int* err); +static BOOLEAN_T restore_network_namespace(int ns, SOCKET sock, int* err); +#endif + +static BOOLEAN_T cnt_inc(Uint32* cnt, Uint32 inc); +static void cnt_dec(Uint32* cnt, Uint32 dec); + +static void inc_socket(int domain, int type, int protocol); +static void dec_socket(int domain, int type, int protocol); + + +static BOOLEAN_T acceptor_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid); +static ERL_NIF_TERM acceptor_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref); +static BOOLEAN_T acceptor_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref); +static BOOLEAN_T acceptor_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); + +static BOOLEAN_T writer_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid); +static ERL_NIF_TERM writer_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref); +static BOOLEAN_T writer_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref); +static BOOLEAN_T writer_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); + +static BOOLEAN_T reader_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid); +static ERL_NIF_TERM reader_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref); +static BOOLEAN_T reader_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref); +static BOOLEAN_T reader_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); + +static BOOLEAN_T qsearch4pid(ErlNifEnv* env, + SocketRequestQueue* q, + ErlNifPid* pid); +static void qpush(SocketRequestQueue* q, + SocketRequestQueueElement* e); +static SocketRequestQueueElement* qpop(SocketRequestQueue* q); +static BOOLEAN_T qunqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const char* slogan, + SocketRequestQueue* q, + const ErlNifPid* pid); + +static int esock_monitor(const char* slogan, + ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid, + ESockMonitor* mon); +static int esock_demonitor(const char* slogan, + ErlNifEnv* env, + SocketDescriptor* descP, + ESockMonitor* monP); +static void esock_monitor_init(ESockMonitor* mon); +/* +static int esock_monitor_compare(const ErlNifMonitor* mon1, + const ESockMonitor* mon2); +*/ + + +/* +#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE) +static size_t my_strnlen(const char *s, size_t maxlen); +#endif +*/ + +static void socket_dtor(ErlNifEnv* env, void* obj); +static void socket_stop(ErlNifEnv* env, + void* obj, + int fd, + int is_direct_call); +static void socket_down(ErlNifEnv* env, + void* obj, + const ErlNifPid* pid, + const ErlNifMonitor* mon); +static void socket_down_acceptor(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); +static void socket_down_writer(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); +static void socket_down_reader(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid); + +static char* esock_send_close_msg(ErlNifEnv* env, + SocketDescriptor* descP); +static char* esock_send_abort_msg(ErlNifEnv* env, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + ERL_NIF_TERM reason, + ErlNifPid* pid); +static char* esock_send_socket_msg(ErlNifEnv* env, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM tag, + ERL_NIF_TERM info, + ErlNifPid* pid, + ErlNifEnv* msg_env); +static char* esock_send_msg(ErlNifEnv* env, + ERL_NIF_TERM msg, + ErlNifPid* pid, + ErlNifEnv* msg_env); + +static int esock_select_read(ErlNifEnv* env, + ErlNifEvent event, + void* obj, + const ErlNifPid* pid, + ERL_NIF_TERM ref); +static int esock_select_write(ErlNifEnv* env, + ErlNifEvent event, + void* obj, + const ErlNifPid* pid, + ERL_NIF_TERM ref); +static int esock_select_stop(ErlNifEnv* env, + ErlNifEvent event, + void* obj); +static int esock_select_cancel(ErlNifEnv* env, + ErlNifEvent event, + enum ErlNifSelectFlags mode, + void* obj); + +static BOOLEAN_T extract_debug(ErlNifEnv* env, + ERL_NIF_TERM map); +static BOOLEAN_T extract_iow(ErlNifEnv* env, + ERL_NIF_TERM map); + +static int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info); + + + +#if HAVE_IN6 +# if ! defined(HAVE_IN6ADDR_ANY) || ! HAVE_IN6ADDR_ANY +# if HAVE_DECL_IN6ADDR_ANY_INIT +static const struct in6_addr in6addr_any = { { IN6ADDR_ANY_INIT } }; +# else +static const struct in6_addr in6addr_any = + { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }; +# endif /* HAVE_IN6ADDR_ANY_INIT */ +# endif /* ! HAVE_DECL_IN6ADDR_ANY */ + +# if ! defined(HAVE_IN6ADDR_LOOPBACK) || ! HAVE_IN6ADDR_LOOPBACK +# if HAVE_DECL_IN6ADDR_LOOPBACK_INIT +static const struct in6_addr in6addr_loopback = + { { IN6ADDR_LOOPBACK_INIT } }; +# else +static const struct in6_addr in6addr_loopback = + { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }; +# endif /* HAVE_IN6ADDR_LOOPBACk_INIT */ +# endif /* ! HAVE_DECL_IN6ADDR_LOOPBACK */ +#endif /* HAVE_IN6 */ + + + +/* *** String constants *** */ +static char str_adaptation_layer[] = "adaptation_layer"; +static char str_address[] = "address"; +static char str_association[] = "association"; +static char str_assoc_id[] = "assoc_id"; +static char str_authentication[] = "authentication"; +// static char str_any[] = "any"; +static char str_bool[] = "bool"; +static char str_close[] = "close"; +static char str_closed[] = "closed"; +static char str_closing[] = "closing"; +static char str_cookie_life[] = "cookie_life"; +static char str_data_in[] = "data_in"; +static char str_do[] = "do"; +static char str_dont[] = "dont"; +static char str_exclude[] = "exclude"; +static char str_false[] = "false"; +static char str_global_counters[] = "global_counters"; +static char str_in4_sockaddr[] = "in4_sockaddr"; +static char str_in6_sockaddr[] = "in6_sockaddr"; +static char str_include[] = "include"; +static char str_initial[] = "initial"; +static char str_int[] = "int"; +static char str_interface[] = "interface"; +static char str_iow[] = "iow"; +static char str_local_rwnd[] = "local_rwnd"; +// static char str_loopback[] = "loopback"; +static char str_max[] = "max"; +static char str_max_attempts[] = "max_attempts"; +static char str_max_init_timeo[] = "max_init_timeo"; +static char str_max_instreams[] = "max_instreams"; +static char str_max_rxt[] = "max_rxt"; +static char str_min[] = "min"; +static char str_mode[] = "mode"; +static char str_multiaddr[] = "multiaddr"; +// static char str_nif_abort[] = "nif_abort"; +static char str_null[] = "null"; +static char str_num_dlocal[] = "num_domain_local"; +static char str_num_dinet[] = "num_domain_inet"; +static char str_num_dinet6[] = "num_domain_inet6"; +static char str_num_outstreams[] = "num_outstreams"; +static char str_num_peer_dests[] = "num_peer_dests"; +static char str_num_pip[] = "num_proto_ip"; +static char str_num_psctp[] = "num_proto_sctp"; +static char str_num_ptcp[] = "num_proto_tcp"; +static char str_num_pudp[] = "num_proto_udp"; +static char str_num_sockets[] = "num_sockets"; +static char str_num_tdgrams[] = "num_type_dgram"; +static char str_num_tseqpkgs[] = "num_type_seqpacket"; +static char str_num_tstreams[] = "num_type_stream"; +static char str_partial_delivery[] = "partial_delivery"; +static char str_peer_error[] = "peer_error"; +static char str_peer_rwnd[] = "peer_rwnd"; +static char str_probe[] = "probe"; +static char str_select[] = "select"; +static char str_sender_dry[] = "sender_dry"; +static char str_send_failure[] = "send_failure"; +static char str_shutdown[] = "shutdown"; +static char str_slist[] = "slist"; +static char str_sourceaddr[] = "sourceaddr"; +static char str_timeout[] = "timeout"; +static char str_true[] = "true"; +static char str_want[] = "want"; + +/* (special) error string constants */ +static char str_eisconn[] = "eisconn"; +static char str_enotclosing[] = "enotclosing"; +static char str_enotconn[] = "enotconn"; +static char str_exalloc[] = "exalloc"; +static char str_exbadstate[] = "exbadstate"; +static char str_exbusy[] = "exbusy"; +static char str_exmon[] = "exmonitor"; // failed monitor +static char str_exself[] = "exself"; // failed self +static char str_exsend[] = "exsend"; // failed send + + +/* *** "Global" Atoms *** */ +ERL_NIF_TERM esock_atom_abort; +ERL_NIF_TERM esock_atom_accept; +ERL_NIF_TERM esock_atom_acceptconn; +ERL_NIF_TERM esock_atom_acceptfilter; +ERL_NIF_TERM esock_atom_adaption_layer; +ERL_NIF_TERM esock_atom_addr; +ERL_NIF_TERM esock_atom_addrform; +ERL_NIF_TERM esock_atom_add_membership; +ERL_NIF_TERM esock_atom_add_source_membership; +ERL_NIF_TERM esock_atom_any; +ERL_NIF_TERM esock_atom_associnfo; +ERL_NIF_TERM esock_atom_authhdr; +ERL_NIF_TERM esock_atom_auth_active_key; +ERL_NIF_TERM esock_atom_auth_asconf; +ERL_NIF_TERM esock_atom_auth_chunk; +ERL_NIF_TERM esock_atom_auth_delete_key; +ERL_NIF_TERM esock_atom_auth_key; +ERL_NIF_TERM esock_atom_auth_level; +ERL_NIF_TERM esock_atom_autoclose; +ERL_NIF_TERM esock_atom_bindtodevice; +ERL_NIF_TERM esock_atom_block_source; +ERL_NIF_TERM esock_atom_broadcast; +ERL_NIF_TERM esock_atom_busy_poll; +ERL_NIF_TERM esock_atom_checksum; +ERL_NIF_TERM esock_atom_close; +ERL_NIF_TERM esock_atom_connect; +ERL_NIF_TERM esock_atom_congestion; +ERL_NIF_TERM esock_atom_context; +ERL_NIF_TERM esock_atom_cork; +ERL_NIF_TERM esock_atom_credentials; +ERL_NIF_TERM esock_atom_ctrl; +ERL_NIF_TERM esock_atom_ctrunc; +ERL_NIF_TERM esock_atom_data; +ERL_NIF_TERM esock_atom_debug; +ERL_NIF_TERM esock_atom_default_send_params; +ERL_NIF_TERM esock_atom_delayed_ack_time; +ERL_NIF_TERM esock_atom_dgram; +ERL_NIF_TERM esock_atom_disable_fragments; +ERL_NIF_TERM esock_atom_domain; +ERL_NIF_TERM esock_atom_dontfrag; +ERL_NIF_TERM esock_atom_dontroute; +ERL_NIF_TERM esock_atom_drop_membership; +ERL_NIF_TERM esock_atom_drop_source_membership; +ERL_NIF_TERM esock_atom_dstopts; +ERL_NIF_TERM esock_atom_eor; +ERL_NIF_TERM esock_atom_error; +ERL_NIF_TERM esock_atom_errqueue; +ERL_NIF_TERM esock_atom_esp_network_level; +ERL_NIF_TERM esock_atom_esp_trans_level; +ERL_NIF_TERM esock_atom_events; +ERL_NIF_TERM esock_atom_explicit_eor; +ERL_NIF_TERM esock_atom_faith; +ERL_NIF_TERM esock_atom_false; +ERL_NIF_TERM esock_atom_family; +ERL_NIF_TERM esock_atom_flags; +ERL_NIF_TERM esock_atom_flowinfo; +ERL_NIF_TERM esock_atom_fragment_interleave; +ERL_NIF_TERM esock_atom_freebind; +ERL_NIF_TERM esock_atom_get_peer_addr_info; +ERL_NIF_TERM esock_atom_hdrincl; +ERL_NIF_TERM esock_atom_hmac_ident; +ERL_NIF_TERM esock_atom_hoplimit; +ERL_NIF_TERM esock_atom_hopopts; +ERL_NIF_TERM esock_atom_ifindex; +ERL_NIF_TERM esock_atom_inet; +ERL_NIF_TERM esock_atom_inet6; +ERL_NIF_TERM esock_atom_info; +ERL_NIF_TERM esock_atom_initmsg; +ERL_NIF_TERM esock_atom_iov; +ERL_NIF_TERM esock_atom_ip; +ERL_NIF_TERM esock_atom_ipcomp_level; +ERL_NIF_TERM esock_atom_ipv6; +ERL_NIF_TERM esock_atom_i_want_mapped_v4_addr; +ERL_NIF_TERM esock_atom_join_group; +ERL_NIF_TERM esock_atom_keepalive; +ERL_NIF_TERM esock_atom_keepcnt; +ERL_NIF_TERM esock_atom_keepidle; +ERL_NIF_TERM esock_atom_keepintvl; +ERL_NIF_TERM esock_atom_leave_group; +ERL_NIF_TERM esock_atom_level; +ERL_NIF_TERM esock_atom_linger; +ERL_NIF_TERM esock_atom_local; +ERL_NIF_TERM esock_atom_local_auth_chunks; +ERL_NIF_TERM esock_atom_loopback; +ERL_NIF_TERM esock_atom_lowdelay; +ERL_NIF_TERM esock_atom_mark; +ERL_NIF_TERM esock_atom_maxburst; +ERL_NIF_TERM esock_atom_maxseg; +ERL_NIF_TERM esock_atom_md5sig; +ERL_NIF_TERM esock_atom_mincost; +ERL_NIF_TERM esock_atom_minttl; +ERL_NIF_TERM esock_atom_msfilter; +ERL_NIF_TERM esock_atom_mtu; +ERL_NIF_TERM esock_atom_mtu_discover; +ERL_NIF_TERM esock_atom_multicast_all; +ERL_NIF_TERM esock_atom_multicast_hops; +ERL_NIF_TERM esock_atom_multicast_if; +ERL_NIF_TERM esock_atom_multicast_loop; +ERL_NIF_TERM esock_atom_multicast_ttl; +ERL_NIF_TERM esock_atom_nodelay; +ERL_NIF_TERM esock_atom_nodefrag; +ERL_NIF_TERM esock_atom_noopt; +ERL_NIF_TERM esock_atom_nopush; +ERL_NIF_TERM esock_atom_not_found; +ERL_NIF_TERM esock_atom_not_owner; +ERL_NIF_TERM esock_atom_ok; +ERL_NIF_TERM esock_atom_oob; +ERL_NIF_TERM esock_atom_oobinline; +ERL_NIF_TERM esock_atom_options; +ERL_NIF_TERM esock_atom_origdstaddr; +ERL_NIF_TERM esock_atom_partial_delivery_point; +ERL_NIF_TERM esock_atom_passcred; +ERL_NIF_TERM esock_atom_path; +ERL_NIF_TERM esock_atom_peekcred; +ERL_NIF_TERM esock_atom_peek_off; +ERL_NIF_TERM esock_atom_peer_addr_params; +ERL_NIF_TERM esock_atom_peer_auth_chunks; +ERL_NIF_TERM esock_atom_pktinfo; +ERL_NIF_TERM esock_atom_pktoptions; +ERL_NIF_TERM esock_atom_port; +ERL_NIF_TERM esock_atom_portrange; +ERL_NIF_TERM esock_atom_primary_addr; +ERL_NIF_TERM esock_atom_priority; +ERL_NIF_TERM esock_atom_protocol; +ERL_NIF_TERM esock_atom_raw; +ERL_NIF_TERM esock_atom_rcvbuf; +ERL_NIF_TERM esock_atom_rcvbufforce; +ERL_NIF_TERM esock_atom_rcvlowat; +ERL_NIF_TERM esock_atom_rcvtimeo; +ERL_NIF_TERM esock_atom_rdm; +ERL_NIF_TERM esock_atom_recv; +ERL_NIF_TERM esock_atom_recvdstaddr; +ERL_NIF_TERM esock_atom_recverr; +ERL_NIF_TERM esock_atom_recvfrom; +ERL_NIF_TERM esock_atom_recvif; +ERL_NIF_TERM esock_atom_recvmsg; +ERL_NIF_TERM esock_atom_recvopts; +ERL_NIF_TERM esock_atom_recvorigdstaddr; +ERL_NIF_TERM esock_atom_recvpktinfo; +ERL_NIF_TERM esock_atom_recvtclass; +ERL_NIF_TERM esock_atom_recvtos; +ERL_NIF_TERM esock_atom_recvttl; +ERL_NIF_TERM esock_atom_reliability; +ERL_NIF_TERM esock_atom_reset_streams; +ERL_NIF_TERM esock_atom_retopts; +ERL_NIF_TERM esock_atom_reuseaddr; +ERL_NIF_TERM esock_atom_reuseport; +ERL_NIF_TERM esock_atom_rights; +ERL_NIF_TERM esock_atom_router_alert; +ERL_NIF_TERM esock_atom_rthdr; +ERL_NIF_TERM esock_atom_rtoinfo; +ERL_NIF_TERM esock_atom_rxq_ovfl; +ERL_NIF_TERM esock_atom_scope_id; +ERL_NIF_TERM esock_atom_sctp; +ERL_NIF_TERM esock_atom_sec; +ERL_NIF_TERM esock_atom_select_failed; +ERL_NIF_TERM esock_atom_select_sent; +ERL_NIF_TERM esock_atom_send; +ERL_NIF_TERM esock_atom_sendmsg; +ERL_NIF_TERM esock_atom_sendsrcaddr; +ERL_NIF_TERM esock_atom_sendto; +ERL_NIF_TERM esock_atom_seqpacket; +ERL_NIF_TERM esock_atom_setfib; +ERL_NIF_TERM esock_atom_set_peer_primary_addr; +ERL_NIF_TERM esock_atom_socket; +ERL_NIF_TERM esock_atom_socket_tag; +ERL_NIF_TERM esock_atom_sndbuf; +ERL_NIF_TERM esock_atom_sndbufforce; +ERL_NIF_TERM esock_atom_sndlowat; +ERL_NIF_TERM esock_atom_sndtimeo; +ERL_NIF_TERM esock_atom_spec_dst; +ERL_NIF_TERM esock_atom_status; +ERL_NIF_TERM esock_atom_stream; +ERL_NIF_TERM esock_atom_syncnt; +ERL_NIF_TERM esock_atom_tclass; +ERL_NIF_TERM esock_atom_tcp; +ERL_NIF_TERM esock_atom_throughput; +ERL_NIF_TERM esock_atom_timestamp; +ERL_NIF_TERM esock_atom_tos; +ERL_NIF_TERM esock_atom_transparent; +ERL_NIF_TERM esock_atom_true; +ERL_NIF_TERM esock_atom_trunc; +ERL_NIF_TERM esock_atom_ttl; +ERL_NIF_TERM esock_atom_type; +ERL_NIF_TERM esock_atom_udp; +ERL_NIF_TERM esock_atom_unblock_source; +ERL_NIF_TERM esock_atom_undefined; +ERL_NIF_TERM esock_atom_unicast_hops; +ERL_NIF_TERM esock_atom_unknown; +ERL_NIF_TERM esock_atom_usec; +ERL_NIF_TERM esock_atom_user_timeout; +ERL_NIF_TERM esock_atom_use_ext_recvinfo; +ERL_NIF_TERM esock_atom_use_min_mtu; +ERL_NIF_TERM esock_atom_v6only; + +/* *** "Global" error (=reason) atoms *** */ +ERL_NIF_TERM esock_atom_eagain; +ERL_NIF_TERM esock_atom_eafnosupport; +ERL_NIF_TERM esock_atom_einval; + +/* *** Atoms *** */ +static ERL_NIF_TERM atom_adaptation_layer; +static ERL_NIF_TERM atom_address; +static ERL_NIF_TERM atom_association; +static ERL_NIF_TERM atom_assoc_id; +static ERL_NIF_TERM atom_authentication; +static ERL_NIF_TERM atom_bool; +static ERL_NIF_TERM atom_close; +static ERL_NIF_TERM atom_closed; +static ERL_NIF_TERM atom_closing; +static ERL_NIF_TERM atom_cookie_life; +static ERL_NIF_TERM atom_data_in; +static ERL_NIF_TERM atom_do; +static ERL_NIF_TERM atom_dont; +static ERL_NIF_TERM atom_exclude; +static ERL_NIF_TERM atom_false; +static ERL_NIF_TERM atom_global_counters; +static ERL_NIF_TERM atom_in4_sockaddr; +static ERL_NIF_TERM atom_in6_sockaddr; +static ERL_NIF_TERM atom_include; +static ERL_NIF_TERM atom_initial; +static ERL_NIF_TERM atom_int; +static ERL_NIF_TERM atom_interface; +static ERL_NIF_TERM atom_iow; +static ERL_NIF_TERM atom_local_rwnd; +static ERL_NIF_TERM atom_max; +static ERL_NIF_TERM atom_max_attempts; +static ERL_NIF_TERM atom_max_init_timeo; +static ERL_NIF_TERM atom_max_instreams; +static ERL_NIF_TERM atom_max_rxt; +static ERL_NIF_TERM atom_min; +static ERL_NIF_TERM atom_mode; +static ERL_NIF_TERM atom_multiaddr; +// static ERL_NIF_TERM atom_nif_abort; +static ERL_NIF_TERM atom_null; +static ERL_NIF_TERM atom_num_dinet; +static ERL_NIF_TERM atom_num_dinet6; +static ERL_NIF_TERM atom_num_dlocal; +static ERL_NIF_TERM atom_num_outstreams; +static ERL_NIF_TERM atom_num_peer_dests; +static ERL_NIF_TERM atom_num_pip; +static ERL_NIF_TERM atom_num_psctp; +static ERL_NIF_TERM atom_num_ptcp; +static ERL_NIF_TERM atom_num_pudp; +static ERL_NIF_TERM atom_num_sockets; +static ERL_NIF_TERM atom_num_tdgrams; +static ERL_NIF_TERM atom_num_tseqpkgs; +static ERL_NIF_TERM atom_num_tstreams; +static ERL_NIF_TERM atom_partial_delivery; +static ERL_NIF_TERM atom_peer_error; +static ERL_NIF_TERM atom_peer_rwnd; +static ERL_NIF_TERM atom_probe; +static ERL_NIF_TERM atom_select; +static ERL_NIF_TERM atom_sender_dry; +static ERL_NIF_TERM atom_send_failure; +static ERL_NIF_TERM atom_shutdown; +static ERL_NIF_TERM atom_slist; +static ERL_NIF_TERM atom_sourceaddr; +static ERL_NIF_TERM atom_timeout; +static ERL_NIF_TERM atom_true; +static ERL_NIF_TERM atom_want; + +static ERL_NIF_TERM atom_eisconn; +static ERL_NIF_TERM atom_enotclosing; +static ERL_NIF_TERM atom_enotconn; +static ERL_NIF_TERM atom_exalloc; +static ERL_NIF_TERM atom_exbadstate; +static ERL_NIF_TERM atom_exbusy; +static ERL_NIF_TERM atom_exmon; +static ERL_NIF_TERM atom_exself; +static ERL_NIF_TERM atom_exsend; + + +/* *** Sockets *** */ +static ErlNifResourceType* sockets; +static ErlNifResourceTypeInit socketInit = { + socket_dtor, + socket_stop, + (ErlNifResourceDown*) socket_down +}; + +// Initiated when the nif is loaded +static SocketData data; + + +/* ---------------------------------------------------------------------- + * N I F F u n c t i o n s + * ---------------------------------------------------------------------- + * + * Utility and admin functions: + * ---------------------------- + * nif_info/0 + * nif_supports/1 + * (nif_debug/1) + * + * The "proper" socket functions: + * ------------------------------ + * nif_open(Domain, Type, Protocol, Extra) + * nif_bind(Sock, LocalAddr) + * nif_connect(Sock, SockAddr) + * nif_listen(Sock, Backlog) + * nif_accept(LSock, Ref) + * nif_send(Sock, SendRef, Data, Flags) + * nif_sendto(Sock, SendRef, Data, Dest, Flags) + * nif_sendmsg(Sock, SendRef, MsgHdr, Flags) + * nif_recv(Sock, RecvRef, Length, Flags) + * nif_recvfrom(Sock, RecvRef, BufSz, Flags) + * nif_recvmsg(Sock, RecvRef, BufSz, CtrlSz, Flags) + * nif_close(Sock) + * nif_shutdown(Sock, How) + * nif_sockname(Sock) + * nif_peername(Sock) + * + * And some functions to manipulate and retrieve socket options: + * ------------------------------------------------------------- + * nif_setopt/5 + * nif_getopt/4 + * + * And some utility functions: + * ------------------------------------------------------------- + * + * And some socket admin functions: + * ------------------------------------------------------------- + * nif_cancel(Sock, Ref) + */ + + +/* ---------------------------------------------------------------------- + * nif_info + * + * Description: + * This is currently just a placeholder... + */ +#define MKCT(E, T, C) MKT2((E), (T), MKI((E), (C))) + +static +ERL_NIF_TERM nif_info(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + if (argc != 0) { + return enif_make_badarg(env); + } else { + ERL_NIF_TERM numSockets = MKCT(env, atom_num_sockets, data.numSockets); + ERL_NIF_TERM numTypeDGrams = MKCT(env, atom_num_tdgrams, data.numTypeDGrams); + ERL_NIF_TERM numTypeStreams = MKCT(env, atom_num_tstreams, data.numTypeStreams); + ERL_NIF_TERM numTypeSeqPkgs = MKCT(env, atom_num_tseqpkgs, data.numTypeSeqPkgs); + ERL_NIF_TERM numDomLocal = MKCT(env, atom_num_dlocal, data.numDomainLocal); + ERL_NIF_TERM numDomInet = MKCT(env, atom_num_dinet, data.numDomainInet); + ERL_NIF_TERM numDomInet6 = MKCT(env, atom_num_dinet6, data.numDomainInet6); + ERL_NIF_TERM numProtoIP = MKCT(env, atom_num_pip, data.numProtoIP); + ERL_NIF_TERM numProtoTCP = MKCT(env, atom_num_ptcp, data.numProtoTCP); + ERL_NIF_TERM numProtoUDP = MKCT(env, atom_num_pudp, data.numProtoUDP); + ERL_NIF_TERM numProtoSCTP = MKCT(env, atom_num_psctp, data.numProtoSCTP); + ERL_NIF_TERM gcnt[] = {numSockets, + numTypeDGrams, numTypeStreams, numTypeSeqPkgs, + numDomLocal, numDomInet, numDomInet6, + numProtoIP, numProtoTCP, numProtoUDP, numProtoSCTP}; + unsigned int lenGCnt = sizeof(gcnt) / sizeof(ERL_NIF_TERM); + ERL_NIF_TERM lgcnt = MKLA(env, gcnt, lenGCnt); + ERL_NIF_TERM keys[] = {esock_atom_debug, atom_iow, atom_global_counters}; + ERL_NIF_TERM vals[] = {BOOL2ATOM(data.dbg), BOOL2ATOM(data.iow), lgcnt}; + ERL_NIF_TERM info; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &info)) + return enif_make_badarg(env); + + return info; + } +#endif +} + + + +/* ---------------------------------------------------------------------- + * nif_supports + * + * Description: + * This function is intended to answer the question: "Is X supported?" + * Currently only one key is "supported": options + * That results in a list of all *known options* (known by us) and if + * the platform supports (OS) it or not. + * + * Key + * --- + * options [{socket, [{Opt, boolean()}]}, + * {ip, [{Opt, boolean()}]}, + * {ipv6, [{Opt, boolean()}]}, + * {tcp, [{Opt, boolean()}]}, + * {udp, [{Opt, boolean()}]}, + * {sctp, [{Opt, boolean()}]}] + */ + +static +ERL_NIF_TERM nif_supports(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + int key; + + SGDBG( ("SOCKET", "nif_supports -> entry with %d args\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 1) || + !GET_INT(env, argv[0], &key)) { + return enif_make_badarg(env); + } + + return nsupports(env, key); +#endif +} + + + +/* nopen - create an endpoint for communication + * + * Assumes the input has been validated. + * + * Normally we want debugging on (individual) sockets to be controlled + * by the sockets own debug flag. But since we don't even have a socket + * yet, we must use the global debug flag. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports(ErlNifEnv* env, int key) +{ + ERL_NIF_TERM result; + + SGDBG( ("SOCKET", "nsupports -> entry with 0x%lX\r\n", key) ); + + switch (key) { + case SOCKET_SUPPORTS_OPTIONS: + result = nsupports_options(env); + break; + + case SOCKET_SUPPORTS_SCTP: + result = nsupports_sctp(env); + break; + + case SOCKET_SUPPORTS_IPV6: + result = nsupports_ipv6(env); + break; + + default: + result = esock_atom_false; + break; + } + + return result; +} +#endif + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options(ErlNifEnv* env) +{ + ERL_NIF_TERM sockOpts = nsupports_options_socket(env); + ERL_NIF_TERM sockOptsT = MKT2(env, esock_atom_socket, sockOpts); + ERL_NIF_TERM ipOpts = nsupports_options_ip(env); + ERL_NIF_TERM ipOptsT = MKT2(env, esock_atom_ip, ipOpts); + ERL_NIF_TERM ipv6Opts = nsupports_options_ipv6(env); + ERL_NIF_TERM ipv6OptsT = MKT2(env, esock_atom_ipv6, ipv6Opts); + ERL_NIF_TERM tcpOpts = nsupports_options_tcp(env); + ERL_NIF_TERM tcpOptsT = MKT2(env, esock_atom_tcp, tcpOpts); + ERL_NIF_TERM udpOpts = nsupports_options_udp(env); + ERL_NIF_TERM udpOptsT = MKT2(env, esock_atom_udp, udpOpts); + ERL_NIF_TERM sctpOpts = nsupports_options_sctp(env); + ERL_NIF_TERM sctpOptsT = MKT2(env, esock_atom_sctp, sctpOpts); + ERL_NIF_TERM optsA[] = {sockOptsT, + ipOptsT, ipv6OptsT, + tcpOptsT, udpOptsT, sctpOptsT}; + unsigned int lenOptsA = sizeof(optsA) / sizeof(ERL_NIF_TERM); + ERL_NIF_TERM optsL = MKLA(env, optsA, lenOptsA); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_socket(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(128); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_SOCK_ACCEPTCONN => SO_ACCEPTCONN *** */ +#if defined(SO_ACCEPTCONN) + tmp = MKT2(env, esock_atom_acceptconn, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_acceptconn, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_ACCEPTFILTER => SO_ACCEPTFILTER *** */ + tmp = MKT2(env, esock_atom_acceptfilter, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_BINDTODEVICE => SO_BINDTODEVICE *** */ +#if defined(SO_BINDTODEVICE) + tmp = MKT2(env, esock_atom_bindtodevice, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_bindtodevice, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_BROADCAST => SO_BROADCAST *** */ +#if defined(SO_BROADCAST) + tmp = MKT2(env, esock_atom_broadcast, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_broadcast, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_BUSY_POLL => SO_BUSY_POLL *** */ + tmp = MKT2(env, esock_atom_busy_poll, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_DEBUG => SO_DEBUG *** */ +#if defined(SO_DEBUG) + tmp = MKT2(env, esock_atom_debug, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_debug, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_DOMAIN => SO_DOMAIN *** */ +#if defined(SO_DOMAIN) + tmp = MKT2(env, esock_atom_domain, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_domain, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_DONTROUTE => SO_DONTROUTE *** */ +#if defined(SO_DONTROUTE) + tmp = MKT2(env, esock_atom_dontroute, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_dontroute, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_ERROR => SO_ERROR *** */ + tmp = MKT2(env, esock_atom_error, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_KEEPALIVE => SO_KEEPALIVE *** */ +#if defined(SO_KEEPALIVE) + tmp = MKT2(env, esock_atom_keepalive, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_keepalive, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_LINGER => SO_LINGER *** */ +#if defined(SO_LINGER) + tmp = MKT2(env, esock_atom_linger, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_linger, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_MARK => SO_MARK *** */ + tmp = MKT2(env, esock_atom_mark, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_OOBINLINE => SO_OOBINLINE *** */ +#if defined(SO_OOBINLINE) + tmp = MKT2(env, esock_atom_oobinline, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_oobinline, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_PASSCRED => SO_PASSCRED *** */ + tmp = MKT2(env, esock_atom_passcred, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_PEEK_OFF => SO_PEEK_OFF *** */ +#if defined(SO_PEEK_OFF) + tmp = MKT2(env, esock_atom_peek_off, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_peek_off, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_PEEKCRED => SO_PEEKCRED *** */ + tmp = MKT2(env, esock_atom_peekcred, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_PRIORITY => SO_PRIORITY *** */ +#if defined(SO_PRIORITY) + tmp = MKT2(env, esock_atom_priority, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_priority, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_PROTOCOL => SO_PROTOCOL *** */ +#if defined(SO_PROTOCOL) + tmp = MKT2(env, esock_atom_protocol, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_protocol, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_RCVBUF => SO_RCVBUF *** */ +#if defined(SO_RCVBUF) + tmp = MKT2(env, esock_atom_rcvbuf, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_rcvbuf, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_RCVBUFFORCE => SO_RCVBUFFORCE *** */ + tmp = MKT2(env, esock_atom_rcvbufforce, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_RCVLOWAT => SO_RCVLOWAT *** */ +#if defined(SO_RCVLOWAT) + tmp = MKT2(env, esock_atom_rcvlowat, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_rcvlowat, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_RCVTIMEO => SO_RCVTIMEO *** */ +#if defined(SO_RCVTIMEO) + tmp = MKT2(env, esock_atom_rcvtimeo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_rcvtimeo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_REUSEADDR => SO_REUSEADDR *** */ +#if defined(SO_REUSEADDR) + tmp = MKT2(env, esock_atom_reuseaddr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_reuseaddr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_REUSEPORT => SO_REUSEPORT *** */ +#if defined(SO_REUSEPORT) + tmp = MKT2(env, esock_atom_reuseport, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_reuseport, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_RXQ_OVFL => SO_RXQ_OVFL *** */ + tmp = MKT2(env, esock_atom_rxq_ovfl, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_SETFIB => SO_SETFIB *** */ + tmp = MKT2(env, esock_atom_setfib, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_SNDBUF => SO_SNDBUF *** */ +#if defined(SO_SNDBUF) + tmp = MKT2(env, esock_atom_sndbuf, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_sndbuf, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_SNDBUFFORCE => SO_SNDBUFFORCE *** */ + tmp = MKT2(env, esock_atom_sndbufforce, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_SNDLOWAT => SO_SNDLOWAT *** */ +#if defined(SO_SNDLOWAT) + tmp = MKT2(env, esock_atom_sndlowat, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_sndlowat, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_SNDTIMEO => SO_SNDTIMEO *** */ +#if defined(SO_SNDTIMEO) + tmp = MKT2(env, esock_atom_sndtimeo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_sndtimeo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_TIMESTAMP => SO_TIMESTAMP *** */ +#if defined(SO_TIMESTAMP) + tmp = MKT2(env, esock_atom_timestamp, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_timestamp, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SOCK_TYPE => SO_TYPE *** */ +#if defined(SO_TYPE) + tmp = MKT2(env, esock_atom_type, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_type, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_ip(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(128); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_IP_ADD_MEMBERSHIP => IP_ADD_MEMBERSHIP *** */ +#if defined(IP_ADD_MEMBERSHIP) + tmp = MKT2(env, esock_atom_add_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_add_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP => IP_ADD_SOURCE_MEMBERSHIP *** */ +#if defined(IP_ADD_SOURCE_MEMBERSHIP) + tmp = MKT2(env, esock_atom_add_source_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_add_source_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_BLOCK_SOURCE => IP_BLOCK_SOURCE *** */ +#if defined(IP_BLOCK_SOURCE) + tmp = MKT2(env, esock_atom_block_source, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_block_source, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_DONTFRAG => IP_DONTFRAG *** */ + tmp = MKT2(env, esock_atom_dontfrag, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_DROP_MEMBERSHIP => IP_DROP_MEMBERSHIP *** */ +#if defined(IP_DROP_MEMBERSHIP) + tmp = MKT2(env, esock_atom_drop_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_drop_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP => IP_DROP_SOURCE_MEMBERSHIP *** */ +#if defined(IP_DROP_SOURCE_MEMBERSHIP) + tmp = MKT2(env, esock_atom_drop_source_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_drop_source_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_FREEBIND => IP_FREEBIND *** */ +#if defined(IP_FREEBIND) + tmp = MKT2(env, esock_atom_freebind, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_freebind, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_HDRINCL => IP_HDRINCL *** */ +#if defined(IP_HDRINCL) + tmp = MKT2(env, esock_atom_hdrincl, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_hdrincl, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MINTTL => IP_MINTTL *** */ +#if defined(IP_MINTTL) + tmp = MKT2(env, esock_atom_minttl, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_minttl, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MSFILTER => IP_MSFILTER / IP_MSFILTER_SIZE *** */ +#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE) + tmp = MKT2(env, esock_atom_msfilter, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_msfilter, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MTU => IP_MTU *** */ + tmp = MKT2(env, esock_atom_mtu, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MTU_DISCOVER => IP_MTU_DISCOVER *** */ +#if defined(IP_MTU_DISCOVER) + tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MULTICAST_ALL => IP_MULTICAST_ALL *** */ +#if defined(IP_MULTICAST_ALL) + tmp = MKT2(env, esock_atom_multicast_all, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_all, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MULTICAST_IF => IP_MULTICAST_IF *** */ +#if defined(IP_MULTICAST_IF) + tmp = MKT2(env, esock_atom_multicast_if, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_if, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MULTICAST_LOOP => IP_MULTICAST_LOOP *** */ +#if defined(IP_MULTICAST_LOOP) + tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_MULTICAST_TTL => IP_MULTICAST_TTL *** */ +#if defined(IP_MULTICAST_TTL) + tmp = MKT2(env, esock_atom_multicast_ttl, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_ttl, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_NODEFRAG => IP_NODEFRAG *** */ +#if defined(IP_NODEFRAG) + tmp = MKT2(env, esock_atom_nodefrag, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_nodefrag, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_OPTIONS => IP_OPTIONS *** */ + tmp = MKT2(env, esock_atom_options, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_PKTINFO => IP_PKTINFO *** */ +#if defined(IP_PKTINFO) + tmp = MKT2(env, esock_atom_pktinfo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_pktinfo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVDSTADDR => IP_RECVDSTADDR *** */ +#if defined(IP_RECVDSTADDR) + tmp = MKT2(env, esock_atom_recvdstaddr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvdstaddr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVERR => IP_RECVERR *** */ +#if defined(IP_RECVERR) + tmp = MKT2(env, esock_atom_recverr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recverr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVIF => IP_RECVIF *** */ +#if defined(IP_RECVIF) + tmp = MKT2(env, esock_atom_recvif, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvif, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVOPTS => IP_RECVOPTS *** */ +#if defined(IP_RECVOPTS) + tmp = MKT2(env, esock_atom_recvopts, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvopts, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVORIGDSTADDR => IP_RECVORIGDSTADDR *** */ +#if defined(IP_RECVORIGDSTADDR) + tmp = MKT2(env, esock_atom_recvorigdstaddr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvorigdstaddr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVTOS => IP_RECVTOS *** */ +#if defined(IP_RECVTOS) + tmp = MKT2(env, esock_atom_recvtos, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvtos, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RECVTTL => IP_RECVTTL *** */ +#if defined(IP_RECVTTL) + tmp = MKT2(env, esock_atom_recvttl, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvttl, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_RETOPTS => IP_RETOPTS *** */ +#if defined(IP_RETOPTS) + tmp = MKT2(env, esock_atom_retopts, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_retopts, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_ROUTER_ALERT => IP_ROUTER_ALERT *** */ +#if defined(IP_ROUTER_ALERT) + tmp = MKT2(env, esock_atom_router_alert, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_router_alert, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_SENDSRCADDR => IP_SENDSRCADDR *** */ +#if defined(IP_SENDSRCADDR) + tmp = MKT2(env, esock_atom_sendsrcaddr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_sendsrcaddr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_TOS => IP_TOS *** */ +#if defined(IP_TOS) + tmp = MKT2(env, esock_atom_tos, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_tos, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_TRANSPARENT => IP_TRANSPARENT *** */ +#if defined(IP_TRANSPARENT) + tmp = MKT2(env, esock_atom_transparent, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_transparent, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_TTL => IP_TTL *** */ +#if defined(IP_TTL) + tmp = MKT2(env, esock_atom_ttl, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_ttl, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IP_UNBLOCK_SOURCE => IP_UNBLOCK_SOURCE *** */ +#if defined(IP_UNBLOCK_SOURCE) + tmp = MKT2(env, esock_atom_unblock_source, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_unblock_source, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_ipv6(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(128); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_IPV6_ADDRFORM => IPV6_ADDRFORM *** */ +#if defined(IPV6_ADDRFORM) + tmp = MKT2(env, esock_atom_addrform, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_addrform, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_ADD_MEMBERSHIP => IPV6_ADD_MEMBERSHIP *** */ +#if defined(IPV6_ADD_MEMBERSHIP) + tmp = MKT2(env, esock_atom_add_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_add_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_AUTHHDR => IPV6_AUTHHDR *** */ +#if defined(IPV6_AUTHHDR) + tmp = MKT2(env, esock_atom_authhdr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_authhdr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_AUTH_LEVEL => IPV6_AUTH_LEVEL *** */ + tmp = MKT2(env, esock_atom_auth_level, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_CHECKSUM => IPV6_CHECKSUM *** */ + tmp = MKT2(env, esock_atom_checksum, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_DROP_MEMBERSHIP => IPV6_DROP_MEMBERSHIP *** */ +#if defined(IPV6_DROP_MEMBERSHIP) + tmp = MKT2(env, esock_atom_drop_membership, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_drop_membership, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_DSTOPTS => IPV6_DSTOPTS *** */ +#if defined(IPV6_DSTOPTS) + tmp = MKT2(env, esock_atom_dstopts, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_dstopts, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_ESP_NETWORK_LEVEL => IPV6_ESP_NETWORK_LEVEL *** */ + tmp = MKT2(env, esock_atom_esp_network_level, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_ESP_TRANS_LEVEL => IPV6_ESP_TRANS_LEVEL *** */ + tmp = MKT2(env, esock_atom_esp_trans_level, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_FAITH => IPV6_FAITH *** */ + tmp = MKT2(env, esock_atom_faith, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_FLOWINFO => IPV6_FLOWINFO *** */ +#if defined(IPV6_FLOWINFO) + tmp = MKT2(env, esock_atom_flowinfo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_flowinfo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_HOPLIMIT => IPV6_HOPLIMIT *** */ +#if defined(IPV6_HOPLIMIT) + tmp = MKT2(env, esock_atom_hoplimit, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_hoplimit, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_HOPOPTS => IPV6_HOPOPTS *** */ +#if defined(IPV6_HOPOPTS) + tmp = MKT2(env, esock_atom_hopopts, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_hopopts, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_IPCOMP_LEVEL => IPV6_IPCOMP_LEVEL *** */ + tmp = MKT2(env, esock_atom_ipcomp_level, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_JOIN_GROUP => IPV6_JOIN_GROUP *** */ + tmp = MKT2(env, esock_atom_join_group, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_LEAVE_GROUP => IPV6_LEAVE_GROUP *** */ + tmp = MKT2(env, esock_atom_leave_group, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_MTU => IPV6_MTU *** */ +#if defined(IPV6_MTU) + tmp = MKT2(env, esock_atom_mtu, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_mtu, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_MTU_DISCOVER => IPV6_MTU_DISCOVER *** */ +#if defined(IPV6_MTU_DISCOVER) + tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_mtu_discover, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_MULTICAST_HOPS => IPV6_MULTICAST_HOPS *** */ +#if defined(IPV6_MULTICAST_HOPS) + tmp = MKT2(env, esock_atom_multicast_hops, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_hops, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_MULTICAST_IF => IPV6_MULTICAST_IF *** */ +#if defined(IPV6_MULTICAST_IF) + tmp = MKT2(env, esock_atom_multicast_if, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_if, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_MULTICAST_LOOP => IPV6_MULTICAST_LOOP *** */ +#if defined(IPV6_MULTICAST_LOOP) + tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_multicast_loop, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_PORTRANGE => IPV6_PORTRANGE *** */ + tmp = MKT2(env, esock_atom_portrange, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_PKTOPTIONS => IPV6_PKTOPTIONS *** */ + tmp = MKT2(env, esock_atom_pktoptions, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_RECVERR => IPV6_RECVERR *** */ +#if defined(IPV6_RECVERR) + tmp = MKT2(env, esock_atom_recverr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recverr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_RECVPKTINFO => IPV6_RECVPKTINFO *** */ +#if defined(IPV6_RECVPKTINFO) + tmp = MKT2(env, esock_atom_recvpktinfo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_recvpktinfo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_RECVTCLASS => IPV6_RECVTCLASS *** */ + tmp = MKT2(env, esock_atom_recvtclass, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_ROUTER_ALERT => IPV6_ROUTER_ALERT *** */ +#if defined(IPV6_ROUTER_ALERT) + tmp = MKT2(env, esock_atom_router_alert, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_router_alert, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_RTHDR => IPV6_RTHDR *** */ +#if defined(IPV6_RTHDR) + tmp = MKT2(env, esock_atom_rthdr, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_rthdr, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_TCLASS => IPV6_TCLASS *** */ + tmp = MKT2(env, esock_atom_tclass, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_UNICAST_HOPS => IPV6_UNICAST_HOPS *** */ +#if defined(IPV6_UNICAST_HOPS) + tmp = MKT2(env, esock_atom_unicast_hops, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_unicast_hops, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_USE_MIN_MTU => IPV6_USE_MIN_MTU *** */ + tmp = MKT2(env, esock_atom_use_min_mtu, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_IPV6_V6ONLY => IPV6_V6ONLY *** */ +#if defined(IPV6_V6ONLY) + tmp = MKT2(env, esock_atom_v6only, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_v6only, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_tcp(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(32); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_TCP_CONGESTION => TCP_CONGESTION *** */ +#if defined(TCP_CONGESTION) + tmp = MKT2(env, esock_atom_congestion, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_congestion, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_CORK => TCP_CORK *** */ +#if defined(TCP_CORK) + tmp = MKT2(env, esock_atom_cork, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_cork, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_INFO => TCP_INFO *** */ + tmp = MKT2(env, esock_atom_info, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_KEEPCNT => TCP_KEEPCNT *** */ + tmp = MKT2(env, esock_atom_keepcnt, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_KEEPIDLE => TCP_KEEPIDLE *** */ + tmp = MKT2(env, esock_atom_keepidle, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_KEEPINTVL => TCP_KEEPINTVL *** */ + tmp = MKT2(env, esock_atom_keepintvl, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_MAXSEG => TCP_MAXSEG *** */ +#if defined(TCP_) + tmp = MKT2(env, esock_atom_maxseg, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_maxseg, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_MD5SIG => TCP_MD5SIG *** */ + tmp = MKT2(env, esock_atom_md5sig, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_NODELAY => TCP_NODELAY *** */ +#if defined(TCP_) + tmp = MKT2(env, esock_atom_nodelay, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_nodelay, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_NOOPT => TCP_NOOPT *** */ + tmp = MKT2(env, esock_atom_noopt, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_NOPUSH => TCP_NOPUSH *** */ + tmp = MKT2(env, esock_atom_nopush, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_SYNCNT => TCP_SYNCNT *** */ + tmp = MKT2(env, esock_atom_syncnt, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_TCP_USER_TIMEOUT => TCP_USER_TIMEOUT *** */ + tmp = MKT2(env, esock_atom_user_timeout, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_udp(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(8); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_UDP_CORK => UDP_CORK *** */ +#if defined(UDP_CORK) + tmp = MKT2(env, esock_atom_cork, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_cork, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_options_sctp(ErlNifEnv* env) +{ + SocketTArray opts = TARRAY_CREATE(64); + ERL_NIF_TERM tmp, optsL; + + + /* *** SOCKET_OPT_SCTP_ADAPTION_LAYER => SCTP_ADAPTION_LAYER *** */ + tmp = MKT2(env, esock_atom_adaption_layer, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_ASSOCINFO => SCTP_ASSOCINFO *** */ +#if defined(SCTP_ASSOCINFO) + tmp = MKT2(env, esock_atom_associnfo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_associnfo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTH_ACTIVE_KEY => SCTP_AUTH_ACTIVE_KEY *** */ + tmp = MKT2(env, esock_atom_auth_active_key, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTH_ASCONF => SCTP_AUTH_ASCONF *** */ + tmp = MKT2(env, esock_atom_auth_asconf, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTH_CHUNK => SCTP_AUTH_CHUNK *** */ + tmp = MKT2(env, esock_atom_auth_chunk, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTH_DELETE_KEY => SCTP_AUTH_DELETE_KEY *** */ + tmp = MKT2(env, esock_atom_auth_delete_key, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTH_KEY => SCTP_AUTH_KEY *** */ + tmp = MKT2(env, esock_atom_auth_key, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_AUTOCLOSE => SCTP_AUTOCLOSE *** */ +#if defined(SCTP_AUTOCLOSE) + tmp = MKT2(env, esock_atom_autoclose, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_autoclose, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_CONTEXT => SCTP_CONTEXT *** */ + tmp = MKT2(env, esock_atom_context, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_DEFAULT_SEND_PARAMS => SCTP_DEFAULT_SEND_PARAMS *** */ + tmp = MKT2(env, esock_atom_default_send_params, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_DELAYED_ACK_TIME => SCTP_DELAYED_ACK_TIME *** */ + tmp = MKT2(env, esock_atom_delayed_ack_time, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_DISABLE_FRAGMENTS => SCTP_DISABLE_FRAGMENTS *** */ +#if defined(SCTP_DISABLE_FRAGMENTS) + tmp = MKT2(env, esock_atom_disable_fragments, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_disable_fragments, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_HMAC_IDENT => SCTP_HMAC_IDENT *** */ + tmp = MKT2(env, esock_atom_hmac_ident, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_EVENTS => SCTP_EVENTS *** */ +#if defined(SCTP_EVENTS) + tmp = MKT2(env, esock_atom_events, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_events, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_EXPLICIT_EOR => SCTP_EXPLICIT_EOR *** */ + tmp = MKT2(env, esock_atom_explicit_eor, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_FRAGMENT_INTERLEAVE => SCTP_FRAGMENT_INTERLEAVE *** */ + tmp = MKT2(env, esock_atom_fragment_interleave, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_GET_PEER_ADDR_INFO => SCTP_GET_PEER_ADDR_INFO *** */ + tmp = MKT2(env, esock_atom_get_peer_addr_info, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_INITMSG => SCTP_INITMSG *** */ +#if defined(SCTP_INITMSG) + tmp = MKT2(env, esock_atom_initmsg, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_initmsg, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_I_WANT_MAPPED_V4_ADDR => SCTP_I_WANT_MAPPED_V4_ADDR *** */ + tmp = MKT2(env, esock_atom_i_want_mapped_v4_addr, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_LOCAL_AUTH_CHUNKS => SCTP_LOCAL_AUTH_CHUNKS *** */ + tmp = MKT2(env, esock_atom_local_auth_chunks, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_MAXSEG => SCTP_MAXSEG *** */ +#if defined(SCTP_MAXSEG) + tmp = MKT2(env, esock_atom_maxseg, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_maxseg, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_MAXBURST => SCTP_MAXBURST *** */ + tmp = MKT2(env, esock_atom_maxburst, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_NODELAY => SCTP_NODELAY *** */ +#if defined(SCTP_NODELAY) + tmp = MKT2(env, esock_atom_nodelay, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_nodelay, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_PARTIAL_DELIVERY_POINT => SCTP_PARTIAL_DELIVERY_POINT *** */ + tmp = MKT2(env, esock_atom_partial_delivery_point, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_PEER_ADDR_PARAMS => SCTP_PEER_ADDR_PARAMS *** */ + tmp = MKT2(env, esock_atom_peer_addr_params, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_PEER_AUTH_CHUNKS => SCTP_PEER_AUTH_CHUNKS *** */ + tmp = MKT2(env, esock_atom_peer_auth_chunks, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_PRIMARY_ADDR => SCTP_PRIMARY_ADDR *** */ + tmp = MKT2(env, esock_atom_primary_addr, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_RESET_STREAMS => SCTP_RESET_STREAMS *** */ + tmp = MKT2(env, esock_atom_reset_streams, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_RTOINFO => SCTP_RTOINFO *** */ +#if defined(SCTP_RTOINFO) + tmp = MKT2(env, esock_atom_rtoinfo, esock_atom_true); +#else + tmp = MKT2(env, esock_atom_rtoinfo, esock_atom_false); +#endif + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_SET_PEER_PRIMARY_ADDR => SCTP_SET_PEER_PRIMARY_ADDR *** */ + tmp = MKT2(env, esock_atom_set_peer_primary_addr, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_STATUS => SCTP_STATUS *** */ + tmp = MKT2(env, esock_atom_status, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + /* *** SOCKET_OPT_SCTP_USE_EXT_RECVINFO => SCTP_USE_EXT_RECVINFO *** */ + tmp = MKT2(env, esock_atom_use_ext_recvinfo, esock_atom_false); + TARRAY_ADD(opts, tmp); + + + TARRAY_TOLIST(opts, env, &optsL); + + return optsL; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_sctp(ErlNifEnv* env) +{ + ERL_NIF_TERM supports; + +#if defined(HAVE_SCTP) + supports = esock_atom_true; +#else + supports = esock_atom_false; +#endif + + return supports; +} +#endif + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsupports_ipv6(ErlNifEnv* env) +{ + ERL_NIF_TERM supports; + + /* Is this (test) really sufficient for testing if we support IPv6? */ +#if defined(HAVE_IPV6) + supports = esock_atom_true; +#else + supports = esock_atom_false; +#endif + + return supports; +} +#endif + + + +/* ---------------------------------------------------------------------- + * nif_open + * + * Description: + * Create an endpoint for communication. + * + * Arguments: + * Domain - The domain, for example 'inet' + * Type - Type of socket, for example 'stream' + * Protocol - The protocol, for example 'tcp' + * Extra - A map with "obscure" options. + * Currently the only allowed option is netns (network namespace). + * This is *only* allowed on linux! + * We sould also use this for the fd value, in case we should use + * an already existing (file) descriptor. + */ +static +ERL_NIF_TERM nif_open(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + int edomain, etype, eproto; + int domain, type, proto; + char* netns; + ERL_NIF_TERM emap; + ERL_NIF_TERM result; + + SGDBG( ("SOCKET", "nif_open -> entry with %d args\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 4) || + !GET_INT(env, argv[0], &edomain) || + !GET_INT(env, argv[1], &etype) || + !IS_MAP(env, argv[3])) { + return enif_make_badarg(env); + } + eproto = argv[2]; + emap = argv[3]; + + SGDBG( ("SOCKET", "nif_open -> " + "\r\n edomain: %T" + "\r\n etype: %T" + "\r\n eproto: %T" + "\r\n extra: %T" + "\r\n", argv[0], argv[1], eproto, emap) ); + + if (!edomain2domain(edomain, &domain)) { + SGDBG( ("SOCKET", "nif_open -> invalid domain: %d\r\n", edomain) ); + return esock_make_error(env, esock_atom_einval); + } + + if (!etype2type(etype, &type)) { + SGDBG( ("SOCKET", "nif_open -> invalid type: %d\r\n", etype) ); + return esock_make_error(env, esock_atom_einval); + } + + if (!eproto2proto(env, eproto, &proto)) { + SGDBG( ("SOCKET", "nif_open -> invalid protocol: %d\r\n", eproto) ); + return esock_make_error(env, esock_atom_einval); + } + +#ifdef HAVE_SETNS + /* We *currently* only support one extra option: netns */ + if (!emap2netns(env, emap, &netns)) { + SGDBG( ("SOCKET", "nif_open -> namespace: %s\r\n", netns) ); + return enif_make_badarg(env); + } +#else + netns = NULL; +#endif + + + result = nopen(env, domain, type, proto, netns); + + SGDBG( ("SOCKET", "nif_open -> done with result: " + "\r\n %T" + "\r\n", result) ); + + return result; + +#endif // if defined(__WIN32__) +} + + +/* nopen - create an endpoint for communication + * + * Assumes the input has been validated. + * + * Normally we want debugging on (individual) sockets to be controlled + * by the sockets own debug flag. But since we don't even have a socket + * yet, we must use the global debug flag. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nopen(ErlNifEnv* env, + int domain, int type, int protocol, + char* netns) +{ + SocketDescriptor* descP; + ERL_NIF_TERM res; + int save_errno = 0; + SOCKET sock; + HANDLE event; +#ifdef HAVE_SETNS + int current_ns = 0; +#endif + + SGDBG( ("SOCKET", "nopen -> entry with" + "\r\n domain: %d" + "\r\n type: %d" + "\r\n protocol: %d" + "\r\n netns: %s" + "\r\n", domain, type, protocol, ((netns == NULL) ? "NULL" : netns)) ); + +#ifdef HAVE_SETNS + if ((netns != NULL) && + !change_network_namespace(netns, ¤t_ns, &save_errno)) + return esock_make_error_errno(env, save_errno); +#endif + + if ((sock = sock_open(domain, type, protocol)) == INVALID_SOCKET) + return esock_make_error_errno(env, sock_errno()); + + SGDBG( ("SOCKET", "nopen -> open success: %d\r\n", sock) ); + +#ifdef HAVE_SETNS + if ((netns != NULL) && + !restore_network_namespace(current_ns, sock, &save_errno)) + return esock_make_error_errno(env, save_errno); + + if (netns != NULL) + FREE(netns); +#endif + + + if ((event = sock_create_event(sock)) == INVALID_EVENT) { + save_errno = sock_errno(); + while ((sock_close(sock) == INVALID_SOCKET) && (sock_errno() == EINTR)); + return esock_make_error_errno(env, save_errno); + } + + SGDBG( ("SOCKET", "nopen -> event success: %d\r\n", event) ); + + SET_NONBLOCKING(sock); + + + /* Create and initiate the socket "descriptor" */ + if ((descP = alloc_descriptor(sock, event)) == NULL) { + sock_close(sock); + // Not sure if this is really the proper error, but... + return enif_make_badarg(env); + } + + descP->state = SOCKET_STATE_OPEN; + descP->domain = domain; + descP->type = type; + descP->protocol = protocol; + + /* Does this apply to other types? Such as RAW? + * Also, is this really correct? Should we not wait for bind? + */ + if (type == SOCK_DGRAM) { + descP->isReadable = TRUE; + descP->isWritable = TRUE; + } + + /* + * Should we keep track of sockets (resources) in some way? + * Doing it here will require mutex to ensure data integrity, + * which will be costly. Send it somewhere? + */ + res = enif_make_resource(env, descP); + enif_release_resource(descP); + + /* Keep track of the creator + * This should not be a problem, but just in case + * the *open* function is used with the wrong kind + * of environment... + */ + if (enif_self(env, &descP->ctrlPid) == NULL) + return esock_make_error(env, atom_exself); + + if (MONP("nopen -> ctrl", + env, descP, + &descP->ctrlPid, + &descP->ctrlMon) != 0) + return esock_make_error(env, atom_exmon); + + + inc_socket(domain, type, protocol); + + return esock_make_ok2(env, res); +} +#endif // if !defined(__WIN32__) + + + +#ifdef HAVE_SETNS +/* We should really have another API, so that we can return errno... */ + +/* *** change network namespace *** + * Retreive the current namespace and set the new. + * Return result and previous namespace if successfull. + */ +#if !defined(__WIN32__) +static +BOOLEAN_T change_network_namespace(char* netns, int* cns, int* err) +{ + int save_errno; + int current_ns = 0; + int new_ns = 0; + + SGDBG( ("SOCKET", "change_network_namespace -> entry with" + "\r\n new ns: %s", netns) ); + + if (netns != NULL) { + current_ns = open("/proc/self/ns/net", O_RDONLY); + if (current_ns == INVALID_SOCKET) { + *cns = current_ns; + *err = sock_errno(); + return FALSE; + } + new_ns = open(netns, O_RDONLY); + if (new_ns == INVALID_SOCKET) { + save_errno = sock_errno(); + while (close(current_ns) == INVALID_SOCKET && + sock_errno() == EINTR); + *cns = -1; + *err = save_errno; + return FALSE; + } + if (setns(new_ns, CLONE_NEWNET) != 0) { + save_errno = sock_errno(); + while ((close(new_ns) == INVALID_SOCKET) && + (sock_errno() == EINTR)); + while ((close(current_ns) == INVALID_SOCKET) && + (sock_errno() == EINTR)); + *cns = -1; + *err = save_errno; + return FALSE; + } else { + while ((close(new_ns) == INVALID_SOCKET) && + (sock_errno() == EINTR)); + *cns = current_ns; + *err = 0; + return TRUE; + } + } else { + *cns = INVALID_SOCKET; + *err = 0; + return TRUE; + } +} +#endif // if !defined(__WIN32__) + + +/* *** restore network namespace *** + * Restore the previous namespace (see above). + */ +#if !defined(__WIN32__) +static +BOOLEAN_T restore_network_namespace(int ns, SOCKET sock, int* err) +{ + int save_errno; + + SGDBG( ("SOCKET", "restore_network_namespace -> entry with" + "\r\n ns: %d", ns) ); + + if (ns != INVALID_SOCKET) { + if (setns(ns, CLONE_NEWNET) != 0) { + /* XXX Failed to restore network namespace. + * What to do? Tidy up and return an error... + * Note that the thread now might still be in the namespace. + * Can this even happen? Should the emulator be aborted? + */ + if (sock != INVALID_SOCKET) + save_errno = sock_errno(); + while (close(sock) == INVALID_SOCKET && + sock_errno() == EINTR); + sock = INVALID_SOCKET; + while (close(ns) == INVALID_SOCKET && + sock_errno() == EINTR); + *err = save_errno; + return FALSE; + } else { + while (close(ns) == INVALID_SOCKET && + sock_errno() == EINTR); + *err = 0; + return TRUE; + } + } + + *err = 0; + return TRUE; +} +#endif // if !defined(__WIN32__) +#endif // ifdef HAVE_SETNS + + + +/* ---------------------------------------------------------------------- + * nif_bind + * + * Description: + * Bind a name to a socket. + * + * Arguments: + * [0] Socket (ref) - Points to the socket descriptor. + * [1] LocalAddr - Local address is a sockaddr map ( socket:sockaddr() ). + */ +static +ERL_NIF_TERM nif_bind(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM eSockAddr; + SocketAddress sockAddr; + unsigned int addrLen; + char* xres; + + SGDBG( ("SOCKET", "nif_bind -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 2) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + eSockAddr = argv[1]; + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + SSDBG( descP, + ("SOCKET", "nif_bind -> args when sock = %d (0x%lX)" + "\r\n Socket: %T" + "\r\n SockAddr: %T" + "\r\n", descP->sock, descP->state, argv[0], eSockAddr) ); + + /* Make sure we are ready + * Not sure how this would even happen, but... + */ + if (descP->state != SOCKET_STATE_OPEN) + return esock_make_error(env, atom_exbadstate); + + if ((xres = esock_decode_sockaddr(env, eSockAddr, &sockAddr, &addrLen)) != NULL) + return esock_make_error_str(env, xres); + + return nbind(env, descP, &sockAddr, addrLen); + +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nbind(ErlNifEnv* env, + SocketDescriptor* descP, + SocketAddress* sockAddrP, + unsigned int addrLen) +{ + int port, ntohs_port; + + SSDBG( descP, ("SOCKET", "nbind -> try bind\r\n") ); + + if (IS_SOCKET_ERROR(sock_bind(descP->sock, + (struct sockaddr*) sockAddrP, addrLen))) { + return esock_make_error_errno(env, sock_errno()); + } + + SSDBG( descP, ("SOCKET", "nbind -> bound - get port\r\n") ); + + port = which_address_port(sockAddrP); + SSDBG( descP, ("SOCKET", "nbind -> port: %d\r\n", port) ); + if (port == 0) { + SOCKLEN_T len = sizeof(SocketAddress); + sys_memzero((char *) sockAddrP, len); + sock_name(descP->sock, &sockAddrP->sa, &len); + port = which_address_port(sockAddrP); + } else if (port == -1) { + port = 0; + } + + ntohs_port = sock_ntohs(port); + + SSDBG( descP, ("SOCKET", "nbind -> done with port = %d\r\n", ntohs_port) ); + + return esock_make_ok2(env, MKI(env, ntohs_port)); + +} +#endif // if !defined(__WIN32__) + + + + +/* ---------------------------------------------------------------------- + * nif_connect + * + * Description: + * Initiate a connection on a socket + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * SockAddr - Socket Address of "remote" host. + * This is sockaddr(), which is either + * sockaddr_in4 or sockaddr_in6. + */ +static +ERL_NIF_TERM nif_connect(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM res, eSockAddr; + char* xres; + + SGDBG( ("SOCKET", "nif_connect -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 2) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + eSockAddr = argv[1]; + + SSDBG( descP, + ("SOCKET", "nif_connect -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n SockAddr: %T" + "\r\n", descP->sock, argv[0], eSockAddr) ); + + if ((xres = esock_decode_sockaddr(env, eSockAddr, + &descP->remote, &descP->addrLen)) != NULL) { + return esock_make_error_str(env, xres); + } + + + MLOCK(descP->readMtx); + MLOCK(descP->writeMtx); + + res = nconnect(env, descP); + + MUNLOCK(descP->writeMtx); + MUNLOCK(descP->readMtx); + + return res; + +#endif // if !defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nconnect(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM res, ref; + int code, sres, save_errno = 0; + + /* + * Verify that we are where in the proper state + */ + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + if (!IS_OPEN(descP)) { + SSDBG( descP, ("SOCKET", "nif_connect -> not open\r\n") ); + return esock_make_error(env, atom_exbadstate); + } + + if (IS_CONNECTED(descP)) { + SSDBG( descP, ("SOCKET", "nif_connect -> already connected\r\n") ); + return esock_make_error(env, atom_eisconn); + } + + if (IS_CONNECTING(descP)) { + SSDBG( descP, ("SOCKET", "nif_connect -> already connecting\r\n") ); + return esock_make_error(env, esock_atom_einval); + } + + + /* + * And attempt to connect + */ + + code = sock_connect(descP->sock, + (struct sockaddr*) &descP->remote, + descP->addrLen); + save_errno = sock_errno(); + + SSDBG( descP, ("SOCKET", "nif_connect -> connect result: %d, %d\r\n", + code, save_errno) ); + + if (IS_SOCKET_ERROR(code) && + ((save_errno == ERRNO_BLOCK) || /* Winsock2 */ + (save_errno == EINPROGRESS))) { /* Unix & OSE!! */ + ref = MKREF(env); + descP->state = SOCKET_STATE_CONNECTING; + if ((sres = esock_select_write(env, descP->sock, descP, NULL, ref)) < 0) { + res = esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } else { + res = esock_make_ok2(env, ref); + } + } else if (code == 0) { /* ok we are connected */ + + descP->state = SOCKET_STATE_CONNECTED; + descP->isReadable = TRUE; + descP->isWritable = TRUE; + + res = esock_atom_ok; + } else { + res = esock_make_error_errno(env, save_errno); + } + + return res; + +} +#endif // if !defined(__WIN32__) + + +/* ---------------------------------------------------------------------- + * nif_finalize_connection + * + * Description: + * Make socket ready for input and output. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + */ +static +ERL_NIF_TERM nif_finalize_connection(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 1) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + return nfinalize_connection(env, descP); + +#endif +} + + +/* *** nfinalize_connection *** + * Perform the final check to verify a connection. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nfinalize_connection(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int error; + + if (descP->state != SOCKET_STATE_CONNECTING) + return esock_make_error(env, atom_enotconn); + + if (!verify_is_connected(descP, &error)) { + descP->state = SOCKET_STATE_OPEN; /* restore state */ + return esock_make_error_errno(env, error); + } + + descP->state = SOCKET_STATE_CONNECTED; + descP->isReadable = TRUE; + descP->isWritable = TRUE; + + return esock_atom_ok; +} +#endif + + +/* *** verify_is_connected *** + * Check if a connection has been established. + */ +#if !defined(__WIN32__) +static +BOOLEAN_T verify_is_connected(SocketDescriptor* descP, int* err) +{ + /* + * *** This is strange *** + * + * This *should* work on Windows NT too, but doesn't. + * An bug in Winsock 2.0 for Windows NT? + * + * See "Unix Netwok Programming", W.R.Stevens, p 412 for a + * discussion about Unix portability and non blocking connect. + */ + +#ifndef SO_ERROR + + int sz, code; + + sz = sizeof(descP->remote); + sys_memzero((char *) &descP->remote, sz); + code = sock_peer(desc->sock, + (struct sockaddr*) &descP->remote, &sz); + + if (IS_SOCKET_ERROR(code)) { + *err = sock_errno(); + return FALSE; + } + +#else + + int error = 0; /* Has to be initiated, we check it */ + unsigned int sz = sizeof(error); /* even if we get -1 */ + int code = sock_getopt(descP->sock, + SOL_SOCKET, SO_ERROR, + (void *)&error, &sz); + + if ((code < 0) || error) { + *err = error; + return FALSE; + } + +#endif /* SO_ERROR */ + + *err = 0; + + return TRUE; +} +#endif + + + +/* ---------------------------------------------------------------------- + * nif_listen + * + * Description: + * Listen for connections on a socket. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * Backlog - The maximum length to which the queue of pending + * connections for socket may grow. + */ +static +ERL_NIF_TERM nif_listen(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + int backlog; + + SGDBG( ("SOCKET", "nif_listen -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 2) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP) || + !GET_INT(env, argv[1], &backlog)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_listen -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n backlog: %d" + "\r\n", descP->sock, argv[0], backlog) ); + + return nlisten(env, descP, backlog); + +#endif // if defined(__WIN32__) +} + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nlisten(ErlNifEnv* env, + SocketDescriptor* descP, + int backlog) +{ + + /* + * Verify that we are where in the proper state + */ + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + if (descP->state == SOCKET_STATE_CLOSED) + return esock_make_error(env, atom_exbadstate); + + if (!IS_OPEN(descP)) + return esock_make_error(env, atom_exbadstate); + + + /* + * And attempt to make socket listening + */ + + if (IS_SOCKET_ERROR(sock_listen(descP->sock, backlog))) + return esock_make_error_errno(env, sock_errno()); + + descP->state = SOCKET_STATE_LISTENING; + + return esock_atom_ok; + +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_accept + * + * Description: + * Accept a connection on a socket. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * Request ref - Unique "id" of this request + * (used for the select, if none is in queue). + */ +static +ERL_NIF_TERM nif_accept(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM ref, res; + + SGDBG( ("SOCKET", "nif_accept -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 2) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + ref = argv[1]; + + SSDBG( descP, + ("SOCKET", "nif_accept -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n ReqRef: %T" + "\r\n", descP->sock, argv[0], ref) ); + + MLOCK(descP->accMtx); + + res = naccept(env, descP, ref); + + MUNLOCK(descP->accMtx); + + return res; + +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM naccept(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref) +{ + ERL_NIF_TERM res; + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + switch (descP->state) { + case SOCKET_STATE_LISTENING: + res = naccept_listening(env, descP, ref); + break; + + case SOCKET_STATE_ACCEPTING: + res = naccept_accepting(env, descP, ref); + break; + + default: + res = esock_make_error(env, esock_atom_einval); + break; + } + + return res; +} +#endif // if !defined(__WIN32__) + + +/* *** naccept_listening *** + * We have no active acceptor (and no acceptors in queue). + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM naccept_listening(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref) +{ + SocketAddress remote; + unsigned int n; + SOCKET accSock; + int save_errno; + ErlNifPid caller; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "naccept_listening -> get caller\r\n") ); + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + n = sizeof(remote); + sys_memzero((char *) &remote, n); + SSDBG( descP, ("SOCKET", "naccept_listening -> try accept\r\n") ); + accSock = sock_accept(descP->sock, (struct sockaddr*) &remote, &n); + if (accSock == INVALID_SOCKET) { + + save_errno = sock_errno(); + + SSDBG( descP, + ("SOCKET", + "naccept_listening -> accept failed (%d)\r\n", save_errno) ); + + res = naccept_listening_error(env, descP, ref, caller, save_errno); + + } else { + + /* + * We got one + */ + + SSDBG( descP, ("SOCKET", "naccept_listening -> success\r\n") ); + + res = naccept_listening_accept(env, descP, accSock, caller, &remote); + + } + + return res; +} + + +/* *** naccept_listening_error *** + * The accept call resultet in an error - handle it. + * There are only two cases: + * 1) BLOCK => Attempt a "retry" + * 2) Other => Return the value (converted to an atom) + */ +static +ERL_NIF_TERM naccept_listening_error(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid caller, + int save_errno) +{ + ERL_NIF_TERM res; + + if (save_errno == ERRNO_BLOCK) { + + /* *** Try again later *** */ + SSDBG( descP, ("SOCKET", "naccept_listening_error -> would block\r\n") ); + + descP->currentAcceptor.pid = caller; + if (MONP("naccept_listening -> current acceptor", + env, descP, + &descP->currentAcceptor.pid, + &descP->currentAcceptor.mon) != 0) + return esock_make_error(env, atom_exmon); + + descP->currentAcceptor.ref = enif_make_copy(descP->env, ref); + descP->currentAcceptorP = &descP->currentAcceptor; + + res = naccept_busy_retry(env, descP, ref, NULL, SOCKET_STATE_ACCEPTING); + + + } else { + SSDBG( descP, + ("SOCKET", + "naccept_listening -> errno: %d\r\n", save_errno) ); + res = esock_make_error_errno(env, save_errno); + } + + return res; +} + + +/* *** naccept_listening_accept *** + * The accept call was successful (accepted) - handle the new connection. + */ +static +ERL_NIF_TERM naccept_listening_accept(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + ErlNifPid caller, + SocketAddress* remote) +{ + ERL_NIF_TERM res; + + naccept_accepted(env, descP, accSock, caller, remote, &res); + + return res; +} +#endif // if !defined(__WIN32__) + + + +/* *** naccept_accepting *** + * We have an active acceptor and possibly acceptors waiting in queue. + * If the pid of the calling process is not the pid of the "current process", + * push the requester onto the (acceptor) queue. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM naccept_accepting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref) +{ + ErlNifPid caller; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "naccept_accepting -> get caller\r\n") ); + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + SSDBG( descP, ("SOCKET", "naccept_accepting -> check: " + "are caller current acceptor:" + "\r\n Caller: %T" + "\r\n Current: %T" + "\r\n", caller, descP->currentAcceptor.pid) ); + + + + + if (compare_pids(env, &descP->currentAcceptor.pid, &caller)) { + + SSDBG( descP, + ("SOCKET", "naccept_accepting -> current acceptor\r\n") ); + + res = naccept_accepting_current(env, descP, ref); + + } else { + + /* Not the "current acceptor", so (maybe) push onto queue */ + + SSDBG( descP, + ("SOCKET", "naccept_accepting -> *not* current acceptor\r\n") ); + + res = naccept_accepting_other(env, descP, ref, caller); + + } + + return res; + +} + + + +/* *** naccept_accepting_current *** + * Handles when the current acceptor makes another attempt. + */ +static +ERL_NIF_TERM naccept_accepting_current(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref) +{ + SocketAddress remote; + unsigned int n; + SOCKET accSock; + int save_errno; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "naccept_accepting_current -> try accept\r\n") ); + n = sizeof(descP->remote); + sys_memzero((char *) &remote, n); + accSock = sock_accept(descP->sock, (struct sockaddr*) &remote, &n); + if (accSock == INVALID_SOCKET) { + + save_errno = sock_errno(); + + SSDBG( descP, + ("SOCKET", + "naccept_accepting_current -> accept failed: %d\r\n", + save_errno) ); + + res = naccept_accepting_current_error(env, descP, ref, save_errno); + + } else { + + SSDBG( descP, ("SOCKET", "naccept_accepting_current -> accepted\r\n") ); + + res = naccept_accepting_current_accept(env, descP, accSock, &remote); + + } + + return res; +} + + +/* *** naccept_accepting_current_accept *** + * Handles when the current acceptor succeeded in its accept call - + * handle the new connection. + */ +static +ERL_NIF_TERM naccept_accepting_current_accept(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + SocketAddress* remote) +{ + int sres; + ERL_NIF_TERM res; + + if (naccept_accepted(env, descP, accSock, + descP->currentAcceptor.pid, remote, &res)) { + + /* We should really go through the queue until we succeed to activate + * a waiting acceptor. For now we just pop once and hope for the best... + * This will leave any remaining acceptors *hanging*... + * + * We need a "activate-next" function. + * + */ + + if (acceptor_pop(env, descP, + &descP->currentAcceptor.pid, + &descP->currentAcceptor.mon, + &descP->currentAcceptor.ref)) { + + /* There was another one */ + + SSDBG( descP, + ("SOCKET", + "naccept_accepting_current_accept -> new (active) acceptor: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentAcceptor.pid, + descP->currentAcceptor.ref) ); + + if ((sres = esock_select_read(env, descP->sock, descP, + &descP->currentAcceptor.pid, + descP->currentAcceptor.ref)) < 0) { + esock_warning_msg("Failed select (%d) for new acceptor " + "after current (%T) died\r\n", + sres, descP->currentAcceptor.pid); + } + } else { + descP->currentAcceptorP = NULL; + descP->state = SOCKET_STATE_LISTENING; + } + } + + return res; +} + + +/* *** naccept_accepting_current_error *** + * The accept call of current acceptor resultet in an error - handle it. + * There are only two cases: + * 1) BLOCK => Attempt a "retry" + * 2) Other => Return the value (converted to an atom) + */ +static +ERL_NIF_TERM naccept_accepting_current_error(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + int save_errno) +{ + ERL_NIF_TERM res; + + if (save_errno == ERRNO_BLOCK) { + + /* + * Just try again, no real error, just a ghost trigger from poll, + */ + + SSDBG( descP, + ("SOCKET", + "naccept_accepting_current_error -> would block: try again\r\n") ); + + res = naccept_busy_retry(env, descP, ref, &descP->currentAcceptor.pid, + /* No state change */ + descP->state); + + } else { + res = esock_make_error_errno(env, save_errno); + } + + return res; +} + + +/* *** naccept_accepting_other *** + * Handles when the another acceptor makes an attempt, which + * results (maybe) in the request beeing pushed onto the + * acceptor queue. + */ +static +ERL_NIF_TERM naccept_accepting_other(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid caller) +{ + ERL_NIF_TERM result; + + if (!acceptor_search4pid(env, descP, &caller)) // Ugh! (&caller) + result = acceptor_push(env, descP, caller, ref); + else + result = esock_make_error(env, esock_atom_eagain); + + return result; +} +#endif // if !defined(__WIN32__) + + + +/* *** naccept_busy_retry *** + * Perform a retry select. If successful, set nextState. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM naccept_busy_retry(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ErlNifPid* pid, + unsigned int nextState) +{ + int sres; + ERL_NIF_TERM res, reason; + + if ((sres = esock_select_read(env, descP->sock, descP, pid, ref)) < 0) { + reason = MKT2(env, esock_atom_select_failed, MKI(env, sres)); + res = esock_make_error(env, reason); + } else { + descP->state = nextState; + res = esock_make_error(env, esock_atom_eagain); + } + + return res; +} + + + +/* *** naccept_accepted *** + * Generic function handling a successful accept. + */ +static +BOOLEAN_T naccept_accepted(ErlNifEnv* env, + SocketDescriptor* descP, + SOCKET accSock, + ErlNifPid pid, + SocketAddress* remote, + ERL_NIF_TERM* result) +{ + SocketDescriptor* accDescP; + HANDLE accEvent; + ERL_NIF_TERM accRef; + int save_errno; + + /* + * We got one + */ + + if ((accEvent = sock_create_event(accSock)) == INVALID_EVENT) { + save_errno = sock_errno(); + while ((sock_close(accSock) == INVALID_SOCKET) && + (sock_errno() == EINTR)); + *result = esock_make_error_errno(env, save_errno); + return FALSE; + } + + if ((accDescP = alloc_descriptor(accSock, accEvent)) == NULL) { + sock_close(accSock); + *result = enif_make_badarg(env); + return FALSE; + } + + accDescP->domain = descP->domain; + accDescP->type = descP->type; + accDescP->protocol = descP->protocol; + accDescP->rBufSz = descP->rBufSz; // Inherit buffer size + accDescP->rNum = descP->rNum; // Inherit buffer uses + accDescP->rNumCnt = 0; + accDescP->rCtrlSz = descP->rCtrlSz; // Inherit buffer siez + accDescP->wCtrlSz = descP->wCtrlSz; // Inherit buffer size + + accRef = enif_make_resource(env, accDescP); + enif_release_resource(accDescP); + + accDescP->ctrlPid = pid; + if (MONP("naccept_accepted -> ctrl", + env, accDescP, + &accDescP->ctrlPid, + &accDescP->ctrlMon) != 0) { + sock_close(accSock); + *result = esock_make_error(env, atom_exmon); + return FALSE; + } + + accDescP->remote = *remote; + SET_NONBLOCKING(accDescP->sock); + + accDescP->state = SOCKET_STATE_CONNECTED; + accDescP->isReadable = TRUE; + accDescP->isWritable = TRUE; + + *result = esock_make_ok2(env, accRef); + + return TRUE; + +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_send + * + * Description: + * Send a message on a socket + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * SendRef - A unique id for this (send) request. + * Data - The data to send in the form of a IOVec. + * Flags - Send flags. + */ + +static +ERL_NIF_TERM nif_send(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM sockRef, sendRef; + ErlNifBinary sndData; + unsigned int eflags; + int flags; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_send -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 4) || + !GET_BIN(env, argv[2], &sndData) || + !GET_UINT(env, argv[3], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we send in case we send abort + sendRef = argv[1]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_send -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n SendRef: %T" + "\r\n Size of data: %d" + "\r\n eFlags: %d" + "\r\n", descP->sock, sockRef, sendRef, sndData.size, eflags) ); + + if (!esendflags2sendflags(eflags, &flags)) + return enif_make_badarg(env); + + MLOCK(descP->writeMtx); + + /* We need to handle the case when another process tries + * to write at the same time. + * If the current write could not write its entire package + * this time (resulting in an select). The write of the + * other process must be made to wait until current + * is done! + * Basically, we need a write queue! + * + * A 'writing' field (boolean), which is set if we did + * not manage to write the entire message and reset every + * time we do. + */ + + res = nsend(env, descP, sockRef, sendRef, &sndData, flags); + + MUNLOCK(descP->writeMtx); + + return res; +#endif // if defined(__WIN32__) +} + + + +/* *** nsend *** + * + * Do the actual send. + * Do some initial writer checks, do the actual send and then + * analyze the result. If we are done, another writer may be + * scheduled (if there is one in the writer queue). + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsend(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ErlNifBinary* sndDataP, + int flags) +{ + int save_errno; + ssize_t written; + ERL_NIF_TERM writerCheck; + + if (!descP->isWritable) + return enif_make_badarg(env); + + /* Check if there is already a current writer and if its us */ + if (!send_check_writer(env, descP, sendRef, &writerCheck)) + return writerCheck; + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->writeTries, 1); + + written = sock_send(descP->sock, sndDataP->data, sndDataP->size, flags); + if (IS_SOCKET_ERROR(written)) + save_errno = sock_errno(); + else + save_errno = -1; // The value does not actually matter in this case + + return send_check_result(env, descP, + written, sndDataP->size, save_errno, + sockRef, sendRef); + +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_sendto + * + * Description: + * Send a message on a socket + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * SendRef - A unique id for this (send) request. + * Data - The data to send in the form of a IOVec. + * Dest - Destination (socket) address. + * Flags - Send flags. + */ + +static +ERL_NIF_TERM nif_sendto(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM sockRef, sendRef; + ErlNifBinary sndData; + unsigned int eflags; + int flags; + ERL_NIF_TERM eSockAddr; + SocketAddress remoteAddr; + unsigned int remoteAddrLen; + char* xres; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_sendto -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 5) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP) || + !GET_BIN(env, argv[2], &sndData) || + !GET_UINT(env, argv[4], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we send in case we send abort + sendRef = argv[1]; + eSockAddr = argv[3]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_sendto -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n sendRef: %T" + "\r\n size of data: %d" + "\r\n eSockAddr: %T" + "\r\n eflags: %d" + "\r\n", + descP->sock, sockRef, sendRef, sndData.size, eSockAddr, eflags) ); + + if (!esendflags2sendflags(eflags, &flags)) { + SSDBG( descP, ("SOCKET", "nif_sendto -> sendflags decode failed\r\n") ); + return esock_make_error(env, esock_atom_einval); + } + + if ((xres = esock_decode_sockaddr(env, eSockAddr, + &remoteAddr, + &remoteAddrLen)) != NULL) { + SSDBG( descP, ("SOCKET", "nif_sendto -> sockaddr decode: %s\r\n", xres) ); + return esock_make_error_str(env, xres); + } + + MLOCK(descP->writeMtx); + + res = nsendto(env, descP, sockRef, sendRef, &sndData, flags, + &remoteAddr, remoteAddrLen); + + MUNLOCK(descP->writeMtx); + + SGDBG( ("SOCKET", "nif_sendto -> done with result: " + "\r\n %T" + "\r\n", res) ); + + return res; +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsendto(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ErlNifBinary* dataP, + int flags, + SocketAddress* toAddrP, + unsigned int toAddrLen) +{ + int save_errno; + ssize_t written; + ERL_NIF_TERM writerCheck; + + if (!descP->isWritable) + return enif_make_badarg(env); + + /* Check if there is already a current writer and if its us */ + if (!send_check_writer(env, descP, sendRef, &writerCheck)) + return writerCheck; + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->writeTries, 1); + + if (toAddrP != NULL) { + written = sock_sendto(descP->sock, + dataP->data, dataP->size, flags, + &toAddrP->sa, toAddrLen); + } else { + written = sock_sendto(descP->sock, + dataP->data, dataP->size, flags, + NULL, 0); + } + if (IS_SOCKET_ERROR(written)) + save_errno = sock_errno(); + else + save_errno = -1; // The value does not actually matter in this case + + return send_check_result(env, descP, written, dataP->size, save_errno, + sockRef, sendRef); +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_sendmsg + * + * Description: + * Send a message on a socket + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * SendRef - A unique id for this (send) request. + * MsgHdr - Message Header - data and (maybe) control and dest + * Flags - Send flags. + */ + +static +ERL_NIF_TERM nif_sendmsg(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + ERL_NIF_TERM res, sockRef, sendRef, eMsgHdr; + SocketDescriptor* descP; + unsigned int eflags; + int flags; + + SGDBG( ("SOCKET", "nif_sendmsg -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 4) || + !IS_MAP(env, argv[2]) || + !GET_UINT(env, argv[3], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we send in case we send abort + sendRef = argv[1]; + eMsgHdr = argv[2]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_sendmsg -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n sendRef: %T" + "\r\n eflags: %d" + "\r\n", + descP->sock, argv[0], sendRef, eflags) ); + + if (!esendflags2sendflags(eflags, &flags)) + return esock_make_error(env, esock_atom_einval); + + MLOCK(descP->writeMtx); + + res = nsendmsg(env, descP, sockRef, sendRef, eMsgHdr, flags); + + MUNLOCK(descP->writeMtx); + + SSDBG( descP, + ("SOCKET", "nif_sendmsg -> done with result: " + "\r\n %T" + "\r\n", res) ); + + return res; +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsendmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef, + ERL_NIF_TERM eMsgHdr, + int flags) +{ + ERL_NIF_TERM res, eAddr, eIOV, eCtrl; + SocketAddress addr; + struct msghdr msgHdr; + ErlNifBinary* iovBins; + struct iovec* iov; + unsigned int iovLen; + char* ctrlBuf; + size_t ctrlBufLen, ctrlBufUsed; + int save_errno; + ssize_t written, dataSize; + ERL_NIF_TERM writerCheck; + char* xres; + + if (!descP->isWritable) + return enif_make_badarg(env); + + /* Check if there is already a current writer and if its us */ + if (!send_check_writer(env, descP, sendRef, &writerCheck)) + return writerCheck; + + /* Depending on if we are *connected* or not, we require + * different things in the msghdr map. + */ + if (IS_CONNECTED(descP)) { + + /* We don't need the address */ + + SSDBG( descP, ("SOCKET", "nsendmsg -> connected: no address\r\n") ); + + msgHdr.msg_name = NULL; + msgHdr.msg_namelen = 0; + + } else { + + /* We need the address */ + + msgHdr.msg_name = (void*) &addr; + msgHdr.msg_namelen = sizeof(addr); + sys_memzero((char *) msgHdr.msg_name, msgHdr.msg_namelen); + if (!GET_MAP_VAL(env, eMsgHdr, esock_atom_addr, &eAddr)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, ("SOCKET", "nsendmsg -> not connected: " + "\r\n address: %T" + "\r\n", eAddr) ); + + if ((xres = esock_decode_sockaddr(env, eAddr, + msgHdr.msg_name, + &msgHdr.msg_namelen)) != NULL) + return esock_make_error_str(env, xres); + } + + + /* Extract the (other) attributes of the msghdr map: iov and maybe ctrl */ + + /* The *mandatory* iov, which must be a list */ + if (!GET_MAP_VAL(env, eMsgHdr, esock_atom_iov, &eIOV)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_LIST_LEN(env, eIOV, &iovLen) && (iovLen > 0)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, ("SOCKET", "nsendmsg -> iov length: %d\r\n", iovLen) ); + + iovBins = MALLOC(iovLen * sizeof(ErlNifBinary)); + ESOCK_ASSERT( (iovBins != NULL) ); + + iov = MALLOC(iovLen * sizeof(struct iovec)); + ESOCK_ASSERT( (iov != NULL) ); + + /* The *opional* ctrl */ + if (GET_MAP_VAL(env, eMsgHdr, esock_atom_ctrl, &eCtrl)) { + ctrlBufLen = descP->wCtrlSz; + ctrlBuf = (char*) MALLOC(ctrlBufLen); + ESOCK_ASSERT( (ctrlBuf != NULL) ); + } else { + eCtrl = esock_atom_undefined; + ctrlBufLen = 0; + ctrlBuf = NULL; + } + SSDBG( descP, ("SOCKET", "nsendmsg -> optional ctrl: " + "\r\n ctrlBuf: 0x%lX" + "\r\n ctrlBufLen: %d" + "\r\n eCtrl: %T\r\n", ctrlBuf, ctrlBufLen, eCtrl) ); + + /* Decode the iov and initiate that part of the msghdr */ + if ((xres = esock_decode_iov(env, eIOV, + iovBins, iov, iovLen, &dataSize)) != NULL) { + FREE(iovBins); + FREE(iov); + if (ctrlBuf != NULL) FREE(ctrlBuf); + return esock_make_error_str(env, xres); + } + msgHdr.msg_iov = iov; + msgHdr.msg_iovlen = iovLen; + + + SSDBG( descP, ("SOCKET", + "nsendmsg -> total (iov) data size: %d\r\n", dataSize) ); + + + /* Decode the ctrl and initiate that part of the msghdr. + */ + if (ctrlBuf != NULL) { + if ((xres = decode_cmsghdrs(env, descP, + eCtrl, + ctrlBuf, ctrlBufLen, &ctrlBufUsed)) != NULL) { + FREE(iovBins); + FREE(iov); + if (ctrlBuf != NULL) FREE(ctrlBuf); + return esock_make_error_str(env, xres); + } + } else { + ctrlBufUsed = 0; + } + msgHdr.msg_control = ctrlBuf; + msgHdr.msg_controllen = ctrlBufUsed; + + + /* The msg-flags field is not used when sending, but zero it just in case */ + msgHdr.msg_flags = 0; + + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->writeTries, 1); + + /* And now, finally, try to send the message */ + written = sock_sendmsg(descP->sock, &msgHdr, flags); + + if (IS_SOCKET_ERROR(written)) + save_errno = sock_errno(); + else + save_errno = -1; // OK or not complete: this value should not matter in this case + + res = send_check_result(env, descP, written, dataSize, save_errno, + sockRef, sendRef); + + FREE(iovBins); + FREE(iov); + if (ctrlBuf != NULL) FREE(ctrlBuf); + + return res; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_writev / nif_sendv + * + * Description: + * Send a message (vector) on a socket + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * SendRef - A unique id for this (send) request. + * Data - A vector of binaries + * Flags - Send flags. + */ + +#ifdef FOBAR +static +ERL_NIF_TERM nwritev(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sendRef, + ERL_NIF_TERM data) +{ + ERL_NIF_TERM tail; + ErlNifIOVec vec; + ErlNifIOVec* iovec = &vec; + SysIOVec* sysiovec; + int save_errno; + int iovcnt, n; + + if (!enif_inspect_iovec(env, MAX_VSZ, data, &tail, &iovec)) + return enif_make_badarg(env); + + if (enif_ioq_size(descP->outQ) > 0) { + /* If the I/O queue contains data we enqueue the iovec + * and then peek the data to write out of the queue. + */ + if (!enif_ioq_enqv(q, iovec, 0)) + return -3; + + sysiovec = enif_ioq_peek(descP->outQ, &iovcnt); + + } else { + /* If the I/O queue is empty we skip the trip through it. */ + iovcnt = iovec->iovcnt; + sysiovec = iovec->iov; + } + + /* Attempt to write the data */ + n = writev(fd, sysiovec, iovcnt); + saved_errno = errno; + + if (enif_ioq_size(descP->outQ) == 0) { + /* If the I/O queue was initially empty we enqueue any + remaining data into the queue for writing later. */ + if (n >= 0 && !enif_ioq_enqv(descP->outQ, iovec, n)) + return -3; + } else { + /* Dequeue any data that was written from the queue. */ + if (n > 0 && !enif_ioq_deq(descP->outQ, n, NULL)) + return -4; + } + /* return n, which is either number of bytes written or -1 if + some error happened */ + errno = saved_errno; + return n; +} +#endif + + + +/* ---------------------------------------------------------------------- + * nif_recv + * + * Description: + * Receive a message on a socket. + * Normally used only on a connected socket! + * If we are trying to read > 0 bytes, then that is what we do. + * But if we have specified 0 bytes, then we want to read + * whatever is in the buffers (everything it got). + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * RecvRef - A unique id for this (send) request. + * Length - The number of bytes to receive. + * Flags - Receive flags. + */ + +static +ERL_NIF_TERM nif_recv(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM sockRef, recvRef; + int len; + unsigned int eflags; + int flags; + ERL_NIF_TERM res; + + if ((argc != 4) || + !GET_INT(env, argv[2], &len) || + !GET_UINT(env, argv[3], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we case we send abort + recvRef = argv[1]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + if (!erecvflags2recvflags(eflags, &flags)) + return enif_make_badarg(env); + + MLOCK(descP->readMtx); + + /* We need to handle the case when another process tries + * to receive at the same time. + * If the current recv could not read its entire package + * this time (resulting in an select). The read of the + * other process must be made to wait until current + * is done! + * Basically, we need a read queue! + * + * A 'reading' field (boolean), which is set if we did + * not manage to read the entire message and reset every + * time we do. + */ + + res = nrecv(env, descP, sockRef, recvRef, len, flags); + + MUNLOCK(descP->readMtx); + + return res; +#endif // if defined(__WIN32__) +} + + +/* The (read) buffer handling *must* be optimized! + * But for now we make it easy for ourselves by + * allocating a binary (of the specified or default + * size) and then throwing it away... + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nrecv(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + int len, + int flags) +{ + ssize_t read; + ErlNifBinary buf; + ERL_NIF_TERM readerCheck; + int save_errno; + int bufSz = (len ? len : descP->rBufSz); + + SSDBG( descP, ("SOCKET", "nrecv -> entry with" + "\r\n len: %d (%d:%d)" + "\r\n flags: %d" + "\r\n", len, descP->rNumCnt, bufSz, flags) ); + + if (!descP->isReadable) + return enif_make_badarg(env); + + /* Check if there is already a current reader and if its us */ + if (!recv_check_reader(env, descP, recvRef, &readerCheck)) + return readerCheck; + + /* Allocate a buffer: + * Either as much as we want to read or (if zero (0)) use the "default" + * size (what has been configured). + */ + if (!ALLOC_BIN(bufSz, &buf)) + return esock_make_error(env, atom_exalloc); + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->readTries, 1); + + // If it fails (read = -1), we need errno... + SSDBG( descP, ("SOCKET", "nrecv -> try read (%d)\r\n", buf.size) ); + read = sock_recv(descP->sock, buf.data, buf.size, flags); + if (IS_SOCKET_ERROR(read)) { + save_errno = sock_errno(); + } else { + save_errno = -1; // The value does not actually matter in this case + } + + SSDBG( descP, ("SOCKET", "nrecv -> read: %d (%d)\r\n", read, save_errno) ); + + return recv_check_result(env, descP, + read, len, + save_errno, + &buf, + sockRef, + recvRef); +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_recvfrom + * + * Description: + * Receive a message on a socket. + * Normally used only on a (un-) connected socket! + * If a buffer size = 0 is specified, then the we will use the default + * buffer size for this socket (whatever has been configured). + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * RecvRef - A unique id for this (send) request. + * BufSz - Size of the buffer into which we put the received message. + * Flags - Receive flags. + * + * <KOLLA> + * + * How do we handle if the peek flag is set? We need to basically keep + * track of if we expect any data from the read. Regardless of the + * number of bytes we try to read. + * + * </KOLLA> + */ + +static +ERL_NIF_TERM nif_recvfrom(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM sockRef, recvRef; + unsigned int bufSz; + unsigned int eflags; + int flags; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_recvfrom -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 4) || + !GET_UINT(env, argv[2], &bufSz) || + !GET_UINT(env, argv[3], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we send in case we send abort + recvRef = argv[1]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_recvfrom -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n recvRef: %T" + "\r\n bufSz: %d" + "\r\n eflags: %d" + "\r\n", descP->sock, argv[0], recvRef, bufSz, eflags) ); + + /* if (IS_OPEN(descP)) */ + /* return esock_make_error(env, atom_enotconn); */ + + if (!erecvflags2recvflags(eflags, &flags)) { + SSDBG( descP, ("SOCKET", "nif_recvfrom -> recvflags decode failed\r\n") ); + return enif_make_badarg(env); + } + + MLOCK(descP->readMtx); + + /* <KOLLA> + * We need to handle the case when another process tries + * to receive at the same time. + * If the current recv could not read its entire package + * this time (resulting in an select). The read of the + * other process must be made to wait until current + * is done! + * Basically, we need a read queue! + * + * A 'reading' field (boolean), which is set if we did + * not manage to read the entire message and reset every + * time we do. + * </KOLLA> + */ + + res = nrecvfrom(env, descP, sockRef, recvRef, bufSz, flags); + + MUNLOCK(descP->readMtx); + + return res; +#endif // if defined(__WIN32__) +} + + +/* The (read) buffer handling *must* be optimized! + * But for now we make it easy for ourselves by + * allocating a binary (of the specified or default + * size) and then throwing it away... + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nrecvfrom(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + Uint16 len, + int flags) +{ + SocketAddress fromAddr; + unsigned int addrLen; + ssize_t read; + int save_errno; + ErlNifBinary buf; + ERL_NIF_TERM readerCheck; + int bufSz = (len ? len : descP->rBufSz); + + SSDBG( descP, ("SOCKET", "nrecvfrom -> entry with" + "\r\n len: %d (%d)" + "\r\n flags: %d" + "\r\n", len, bufSz, flags) ); + + if (!descP->isReadable) + return enif_make_badarg(env); + + /* Check if there is already a current reader and if its us */ + if (!recv_check_reader(env, descP, recvRef, &readerCheck)) + return readerCheck; + + /* Allocate a buffer: + * Either as much as we want to read or (if zero (0)) use the "default" + * size (what has been configured). + */ + if (!ALLOC_BIN(bufSz, &buf)) + return esock_make_error(env, atom_exalloc); + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->readTries, 1); + + addrLen = sizeof(fromAddr); + sys_memzero((char*) &fromAddr, addrLen); + + read = sock_recvfrom(descP->sock, buf.data, buf.size, flags, + &fromAddr.sa, &addrLen); + if (IS_SOCKET_ERROR(read)) + save_errno = sock_errno(); + else + save_errno = -1; // The value does not actually matter in this case + + return recvfrom_check_result(env, descP, + read, + save_errno, + &buf, + &fromAddr, addrLen, + sockRef, + recvRef); +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_recvmsg + * + * Description: + * Receive a message on a socket. + * Normally used only on a (un-) connected socket! + * If a buffer size = 0 is specified, then we will use the default + * buffer size for this socket (whatever has been configured). + * If ctrl (buffer) size = 0 is specified, then the default ctrl + * (buffer) size is used (1024). + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * RecvRef - A unique id for this (send) request. + * BufSz - Size of the buffer into which we put the received message. + * CtrlSz - Size of the ctrl (buffer) into which we put the received + * ancillary data. + * Flags - Receive flags. + * + * <KOLLA> + * + * How do we handle if the peek flag is set? We need to basically keep + * track of if we expect any data from the read. Regardless of the + * number of bytes we try to read. + * + * </KOLLA> + */ + +static +ERL_NIF_TERM nif_recvmsg(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM sockRef, recvRef; + unsigned int bufSz; + unsigned int ctrlSz; + unsigned int eflags; + int flags; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_recvmsg -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 5) || + !GET_UINT(env, argv[2], &bufSz) || + !GET_UINT(env, argv[3], &ctrlSz) || + !GET_UINT(env, argv[4], &eflags)) { + return enif_make_badarg(env); + } + sockRef = argv[0]; // We need this in case we send in case we send abort + recvRef = argv[1]; + + if (!enif_get_resource(env, sockRef, sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + SSDBG( descP, + ("SOCKET", "nif_recvmsg -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n recvRef: %T" + "\r\n bufSz: %d" + "\r\n ctrlSz: %d" + "\r\n eflags: %d" + "\r\n", descP->sock, argv[0], recvRef, bufSz, ctrlSz, eflags) ); + + /* if (IS_OPEN(descP)) */ + /* return esock_make_error(env, atom_enotconn); */ + + if (!erecvflags2recvflags(eflags, &flags)) + return enif_make_badarg(env); + + MLOCK(descP->readMtx); + + /* <KOLLA> + * + * We need to handle the case when another process tries + * to receive at the same time. + * If the current recv could not read its entire package + * this time (resulting in an select). The read of the + * other process must be made to wait until current + * is done! + * Basically, we need a read queue! + * + * A 'reading' field (boolean), which is set if we did + * not manage to read the entire message and reset every + * time we do. + * + * </KOLLA> + */ + + res = nrecvmsg(env, descP, sockRef, recvRef, bufSz, ctrlSz, flags); + + MUNLOCK(descP->readMtx); + + return res; +#endif // if defined(__WIN32__) +} + + +/* The (read) buffer handling *must* be optimized! + * But for now we make it easy for ourselves by + * allocating a binary (of the specified or default + * size) and then throwing it away... + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nrecvmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + Uint16 bufLen, + Uint16 ctrlLen, + int flags) +{ + unsigned int addrLen; + ssize_t read; + int save_errno; + int bufSz = (bufLen ? bufLen : descP->rBufSz); + int ctrlSz = (ctrlLen ? ctrlLen : descP->rCtrlSz); + struct msghdr msgHdr; + struct iovec iov[1]; // Shall we always use 1? + ErlNifBinary data[1]; // Shall we always use 1? + ErlNifBinary ctrl; + ERL_NIF_TERM readerCheck; + SocketAddress addr; + + SSDBG( descP, ("SOCKET", "nrecvmsg -> entry with" + "\r\n bufSz: %d (%d)" + "\r\n ctrlSz: %d (%d)" + "\r\n flags: %d" + "\r\n", bufSz, bufLen, ctrlSz, ctrlLen, flags) ); + + if (!descP->isReadable) + return enif_make_badarg(env); + + /* Check if there is already a current reader and if its us */ + if (!recv_check_reader(env, descP, recvRef, &readerCheck)) + return readerCheck; + + /* + for (i = 0; i < sizeof(buf); i++) { + if (!ALLOC_BIN(bifSz, &buf[i])) + return esock_make_error(env, atom_exalloc); + iov[i].iov_base = buf[i].data; + iov[i].iov_len = buf[i].size; + } + */ + + /* Allocate the (msg) data buffer: + */ + if (!ALLOC_BIN(bufSz, &data[0])) + return esock_make_error(env, atom_exalloc); + + /* Allocate the ctrl (buffer): + */ + if (!ALLOC_BIN(ctrlSz, &ctrl)) + return esock_make_error(env, atom_exalloc); + + /* We ignore the wrap for the moment. + * Maybe we should issue a wrap-message to controlling process... + */ + cnt_inc(&descP->readTries, 1); + + addrLen = sizeof(addr); + sys_memzero((char*) &addr, addrLen); + sys_memzero((char*) &msgHdr, sizeof(msgHdr)); + + iov[0].iov_base = data[0].data; + iov[0].iov_len = data[0].size; + + msgHdr.msg_name = &addr; + msgHdr.msg_namelen = addrLen; + msgHdr.msg_iov = iov; + msgHdr.msg_iovlen = 1; // Should use a constant or calculate... + msgHdr.msg_control = ctrl.data; + msgHdr.msg_controllen = ctrl.size; + + read = sock_recvmsg(descP->sock, &msgHdr, flags); + if (IS_SOCKET_ERROR(read)) + save_errno = sock_errno(); + else + save_errno = -1; // The value does not actually matter in this case + + return recvmsg_check_result(env, descP, + read, + save_errno, + &msgHdr, + data, // Needed for iov encode + &ctrl, // Needed for ctrl header encode + sockRef, + recvRef); +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_close + * + * Description: + * Close a (socket) file descriptor. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + */ + +static +ERL_NIF_TERM nif_close(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + + if ((argc != 1) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + return nclose(env, descP); +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nclose(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM reply, reason; + BOOLEAN_T doClose; + int selectRes; + int domain = descP->domain; + int type = descP->type; + int protocol = descP->protocol; + + SSDBG( descP, ("SOCKET", + "nclose -> [%d] entry (0x%lX, 0x%lX, 0x%lX, 0x%lX)\r\n", + descP->sock, + descP->state, + descP->currentWriterP, + descP->currentReaderP, + descP->currentAcceptorP) ); + + MLOCK(descP->closeMtx); + + if (descP->state == SOCKET_STATE_CLOSED) { + reason = atom_closed; + doClose = FALSE; + } else if (descP->state == SOCKET_STATE_CLOSING) { + reason = atom_closing; + doClose = FALSE; + } else { + + /* Store the PID of the caller, + * since we need to inform it when we + * (that is, the stop callback function) + * completes. + */ + + if (enif_self(env, &descP->closerPid) == NULL) { + MUNLOCK(descP->closeMtx); + return esock_make_error(env, atom_exself); + } + + /* Monitor the caller, since we should complete this operation even if + * the caller dies (for whatever reason). + * + * <KOLLA> + * + * Can we actiually use this for anything? + * + * </KOLLA> + */ + + if (MONP("nclose -> closer", + env, descP, + &descP->closerPid, + &descP->closerMon) != 0) { + MUNLOCK(descP->closeMtx); + return esock_make_error(env, atom_exmon); + } + + descP->closeLocal = TRUE; + descP->state = SOCKET_STATE_CLOSING; + descP->isReadable = FALSE; + descP->isWritable = FALSE; + doClose = TRUE; + } + + if (doClose) { + descP->closeEnv = enif_alloc_env(); + descP->closeRef = MKREF(descP->closeEnv); + selectRes = esock_select_stop(env, descP->sock, descP); + if (selectRes & ERL_NIF_SELECT_STOP_CALLED) { + /* Prep done - inform the caller it can finalize (close) directly */ + SSDBG( descP, + ("SOCKET", "nclose -> [%d] stop was called\r\n", descP->sock) ); + dec_socket(domain, type, protocol); + reply = esock_atom_ok; + } else if (selectRes & ERL_NIF_SELECT_STOP_SCHEDULED) { + /* The stop callback function has been *scheduled* which means that we + * have to wait for it to complete. */ + SSDBG( descP, + ("SOCKET", "nclose -> [%d] stop was scheduled\r\n", + descP->sock) ); + dec_socket(domain, type, protocol); // SHALL WE DO THIS AT finalize? + reply = esock_make_ok2(env, descP->closeRef); + } else { + + SSDBG( descP, + ("SOCKET", "nclose -> [%d] stop failed: %d\r\n", + descP->sock, selectRes) ); + + /* <KOLLA> + * + * WE SHOULD REALLY HAVE A WAY TO CLOBBER THE SOCKET, + * SO WE DON'T LET STUFF LEAK. + * NOW, BECAUSE WE FAILED TO SELECT, WE CANNOT FINISH + * THE CLOSE, WHAT TO DO? ABORT? + * + * </KOLLA> + */ + + // No point in having this? + DEMONP("nclose -> closer", env, descP, &descP->closerMon); + + reason = MKT2(env, atom_select, MKI(env, selectRes)); + reply = esock_make_error(env, reason); + } + + } else { + reply = esock_make_error(env, reason); + } + + MUNLOCK(descP->closeMtx); + + SSDBG( descP, + ("SOCKET", "nclose -> [%d] done when: " + "\r\n state: 0x%lX" + "\r\n reply: %T" + "\r\n", descP->sock, descP->state, reply) ); + + return reply; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_finalize_close + * + * Description: + * Perform the actual socket close! + * Note that this function is executed in a dirty scheduler. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + */ +static +ERL_NIF_TERM nif_finalize_close(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 1) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + return nfinalize_close(env, descP); +#endif // if defined(__WIN32__) +} + + +/* *** nfinalize_close *** + * Perform the final step in the socket close. + */ +#if !defined(__WIN32__) +static +ERL_NIF_TERM nfinalize_close(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM reply; + + if (IS_CLOSED(descP)) + return esock_atom_ok; + + if (!IS_CLOSING(descP)) + return esock_make_error(env, atom_enotclosing); + + /* This nif is executed in a dirty scheduler just so that + * it can "hang" (whith minumum effect on the VM) while the + * kernel writes our buffers. IF we have set the linger option + * for this ({true, integer() > 0}). For this to work we must + * be blocking... + */ + SET_BLOCKING(descP->sock); + + if (sock_close(descP->sock) != 0) { + int save_errno = sock_errno(); + + if (save_errno != ERRNO_BLOCK) { + /* Not all data in the buffers where sent, + * make sure the caller gets this. + */ + reply = esock_make_error(env, atom_timeout); + } else { + reply = esock_make_error_errno(env, save_errno); + } + } else { + reply = esock_atom_ok; + } + sock_close_event(descP->event); + + descP->sock = INVALID_SOCKET; + descP->event = INVALID_EVENT; + + descP->state = SOCKET_STATE_CLOSED; + + return reply; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_shutdown + * + * Description: + * Disable sends and/or receives on a socket. + * + * Arguments: + * [0] Socket (ref) - Points to the socket descriptor. + * [1] How - What will be shutdown. + */ + +static +ERL_NIF_TERM nif_shutdown(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + unsigned int ehow; + int how; + + if ((argc != 2) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP) || + !GET_UINT(env, argv[1], &ehow)) { + return enif_make_badarg(env); + } + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + if (!ehow2how(ehow, &how)) + return enif_make_badarg(env); + + return nshutdown(env, descP, how); +#endif // if defined(__WIN32__) +} + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nshutdown(ErlNifEnv* env, + SocketDescriptor* descP, + int how) +{ + ERL_NIF_TERM reply; + + if (sock_shutdown(descP->sock, how) == 0) { + switch (how) { + case SHUT_RD: + descP->isReadable = FALSE; + break; + case SHUT_WR: + descP->isWritable = FALSE; + break; + case SHUT_RDWR: + descP->isReadable = FALSE; + descP->isWritable = FALSE; + break; + } + reply = esock_atom_ok; + } else { + reply = esock_make_error_errno(env, sock_errno()); + } + + return reply; +} +#endif // if !defined(__WIN32__) + + + + +/* ---------------------------------------------------------------------- + * nif_setopt + * + * Description: + * Set socket option. + * Its possible to use a "raw" mode (not encoded). That is, we do not + * interpret level, opt and value. They are passed "as is" to the + * setsockopt function call (the value arguments is assumed to be a + * binary, already encoded). + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * Encoded - Are the "arguments" encoded or not. + * Level - Level of the socket option. + * Opt - The socket option. + * Value - Value of the socket option (type depend on the option). + */ + +static +ERL_NIF_TERM nif_setopt(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP = NULL; + int eLevel, level = -1; + int eOpt; + ERL_NIF_TERM eIsEncoded; + ERL_NIF_TERM eVal; + BOOLEAN_T isEncoded, isOTP; + ERL_NIF_TERM result; + + SGDBG( ("SOCKET", "nif_setopt -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 5) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP) || + !GET_INT(env, argv[2], &eLevel) || + !GET_INT(env, argv[3], &eOpt)) { + SGDBG( ("SOCKET", "nif_setopt -> failed initial arg check\r\n") ); + return enif_make_badarg(env); + } + eIsEncoded = argv[1]; + eVal = argv[4]; + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + isEncoded = esock_decode_bool(eIsEncoded); + + /* SGDBG( ("SOCKET", "nif_setopt -> eIsDecoded (%T) decoded: %d\r\n", */ + /* eIsEncoded, isEncoded) ); */ + + if (!elevel2level(isEncoded, eLevel, &isOTP, &level)) { + SSDBG( descP, ("SOCKET", "nif_seopt -> failed decode level\r\n") ); + return esock_make_error(env, esock_atom_einval); + } + + SSDBG( descP, + ("SOCKET", "nif_setopt -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n Encoded: %d (%T)" + "\r\n Level: %d (%d)" + "\r\n Opt: %d" + "\r\n Value: %T" + "\r\n", + descP->sock, argv[0], + isEncoded, eIsEncoded, + level, eLevel, + eOpt, eVal) ); + + result = nsetopt(env, descP, isEncoded, isOTP, level, eOpt, eVal); + + SSDBG( descP, + ("SOCKET", "nif_setopt -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +#endif // if defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsetopt(ErlNifEnv* env, + SocketDescriptor* descP, + BOOLEAN_T isEncoded, + BOOLEAN_T isOTP, + int level, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + if (isOTP) { + /* These are not actual socket options, + * but options for our implementation. + */ + result = nsetopt_otp(env, descP, eOpt, eVal); + } else if (!isEncoded) { + result = nsetopt_native(env, descP, level, eOpt, eVal); + } else { + result = nsetopt_level(env, descP, level, eOpt, eVal); + } + + return result; +} + + + +/* nsetopt_otp - Handle OTP (level) options + */ +static +ERL_NIF_TERM nsetopt_otp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_otp -> entry with" + "\r\n eOpt: %d" + "\r\n eVal: %T" + "\r\n", eOpt, eVal) ); + + switch (eOpt) { + case SOCKET_OPT_OTP_DEBUG: + result = nsetopt_otp_debug(env, descP, eVal); + break; + + case SOCKET_OPT_OTP_IOW: + result = nsetopt_otp_iow(env, descP, eVal); + break; + + case SOCKET_OPT_OTP_CTRL_PROC: + result = nsetopt_otp_ctrl_proc(env, descP, eVal); + break; + + case SOCKET_OPT_OTP_RCVBUF: + result = nsetopt_otp_rcvbuf(env, descP, eVal); + break; + + case SOCKET_OPT_OTP_RCVCTRLBUF: + result = nsetopt_otp_rcvctrlbuf(env, descP, eVal); + break; + + case SOCKET_OPT_OTP_SNDCTRLBUF: + result = nsetopt_otp_sndctrlbuf(env, descP, eVal); + break; + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* nsetopt_otp_debug - Handle the OTP (level) debug options + */ +static +ERL_NIF_TERM nsetopt_otp_debug(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + descP->dbg = esock_decode_bool(eVal); + + return esock_atom_ok; +} + + +/* nsetopt_otp_iow - Handle the OTP (level) iow options + */ +static +ERL_NIF_TERM nsetopt_otp_iow(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + descP->iow = esock_decode_bool(eVal); + + return esock_atom_ok; +} + + + +/* nsetopt_otp_ctrl_proc - Handle the OTP (level) controlling_process options + */ +static +ERL_NIF_TERM nsetopt_otp_ctrl_proc(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ErlNifPid caller, newCtrlPid; + // ErlNifMonitor newCtrlMon; + ESockMonitor newCtrlMon; + int xres; + + SSDBG( descP, + ("SOCKET", "nsetopt_otp_ctrl_proc -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + /* Before we begin, ensure that caller is (current) controlling-process */ + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + if (!compare_pids(env, &descP->ctrlPid, &caller)) { + SSDBG( descP, ("SOCKET", "nsetopt_otp_ctrl_proc -> not owner (%T)\r\n", + descP->ctrlPid) ); + return esock_make_error(env, esock_atom_not_owner); + } + + if (!GET_LPID(env, eVal, &newCtrlPid)) { + esock_warning_msg("Failed get pid of new controlling process\r\n"); + return esock_make_error(env, esock_atom_einval); + } + + if ((xres = MONP("nsetopt_otp_ctrl_proc -> (new) ctrl", + env, descP, &newCtrlPid, &newCtrlMon)) != 0) { + esock_warning_msg("Failed monitor %d) (new) controlling process\r\n", xres); + return esock_make_error(env, esock_atom_einval); + } + + if ((xres = DEMONP("nsetopt_otp_ctrl_proc -> (old) ctrl", + env, descP, &descP->ctrlMon)) != 0) { + esock_warning_msg("Failed demonitor (%d) " + "old controlling process %T (%T)\r\n", + xres, descP->ctrlPid, descP->ctrlMon); + } + + descP->ctrlPid = newCtrlPid; + descP->ctrlMon = newCtrlMon; + + SSDBG( descP, ("SOCKET", "nsetopt_otp_ctrl_proc -> done\r\n") ); + + return esock_atom_ok; +} + + + +/* nsetopt_otp_rcvbuf - Handle the OTP (level) rcvbuf option + * The (otp) rcvbuf option is provided as: + * + * BufSz :: integer() | {N :: pos_integer(), BufSz :: pod_integer()} + * + * Where N is the max number of reads. + */ +static +ERL_NIF_TERM nsetopt_otp_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + const ERL_NIF_TERM* t; // The array of the elements of the tuple + int tsz; // The size of the tuple - should be 2 + unsigned int n; + size_t bufSz; + char* xres; + + if (IS_NUM(env, eVal)) { + + /* This will have the effect that the buffer size will be + * reported as an integer (getopt). + */ + n = 0; + + if ((xres = esock_decode_bufsz(env, + eVal, + SOCKET_RECV_BUFFER_SIZE_DEFAULT, + &bufSz)) != NULL) + return esock_make_error_str(env, xres); + + } else if (IS_TUPLE(env, eVal)) { + + if (!GET_TUPLE(env, eVal, &tsz, &t)) + return enif_make_badarg(env); // We should use a "proper" error value... + + if (tsz != 2) + return enif_make_badarg(env); // We should use a "proper" error value... + + if (!GET_UINT(env, t[0], &n)) + return enif_make_badarg(env); // We should use a "proper" error value... + + if ((xres = esock_decode_bufsz(env, + t[1], + SOCKET_RECV_BUFFER_SIZE_DEFAULT, + &bufSz)) != NULL) + return esock_make_error_str(env, xres); + + } else { + return enif_make_badarg(env); // We should use a "proper" error value... + } + + descP->rNum = n; + descP->rBufSz = bufSz; + + return esock_atom_ok; +} + + + +/* nsetopt_otp_rcvctrlbuf - Handle the OTP (level) rcvctrlbuf option + */ +static +ERL_NIF_TERM nsetopt_otp_rcvctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + size_t val; + char* xres; + + if ((xres = esock_decode_bufsz(env, + eVal, + SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT, + &val)) != NULL) + return esock_make_error_str(env, xres); + + descP->rCtrlSz = val; + + return esock_atom_ok; +} + + + +/* nsetopt_otp_sndctrlbuf - Handle the OTP (level) sndctrlbuf option + */ +static +ERL_NIF_TERM nsetopt_otp_sndctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + size_t val; + char* xres; + + if ((xres = esock_decode_bufsz(env, + eVal, + SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT, + &val)) != NULL) + return esock_make_error_str(env, xres); + + descP->wCtrlSz = val; + + return esock_atom_ok; +} + + + +/* The option has *not* been encoded. Instead it has been provided + * in "native mode" (option is provided as is and value as a binary). + */ +static +ERL_NIF_TERM nsetopt_native(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal) +{ + ErlNifBinary val; + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_native -> entry with" + "\r\n level: %d" + "\r\n opt: %d" + "\r\n eVal: %T" + "\r\n", level, opt, eVal) ); + + if (GET_BIN(env, eVal, &val)) { + int res = socket_setopt(descP->sock, level, opt, + val.data, val.size); + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + } else { + result = esock_make_error(env, esock_atom_einval); + } + + SSDBG( descP, + ("SOCKET", "nsetopt_native -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + + +/* nsetopt_level - A "proper" level (option) has been specified + */ +static +ERL_NIF_TERM nsetopt_level(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_level -> entry with" + "\r\n level: %d" + "\r\n", level) ); + + switch (level) { + case SOL_SOCKET: + result = nsetopt_lvl_socket(env, descP, eOpt, eVal); + break; + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + result = nsetopt_lvl_ip(env, descP, eOpt, eVal); + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + result = nsetopt_lvl_ipv6(env, descP, eOpt, eVal); + break; +#endif + + case IPPROTO_TCP: + result = nsetopt_lvl_tcp(env, descP, eOpt, eVal); + break; + + case IPPROTO_UDP: + result = nsetopt_lvl_udp(env, descP, eOpt, eVal); + break; + +#if defined(HAVE_SCTP) + case IPPROTO_SCTP: + result = nsetopt_lvl_sctp(env, descP, eOpt, eVal); + break; +#endif + + default: + SSDBG( descP, + ("SOCKET", "nsetopt_level -> unknown level (%d)\r\n", level) ); + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "nsetopt_level -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + + +/* nsetopt_lvl_socket - Level *SOCKET* option + */ +static +ERL_NIF_TERM nsetopt_lvl_socket(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_socket -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(SO_BINDTODEVICE) + case SOCKET_OPT_SOCK_BINDTODEVICE: + result = nsetopt_lvl_sock_bindtodevice(env, descP, eVal); + break; +#endif + +#if defined(SO_BROADCAST) + case SOCKET_OPT_SOCK_BROADCAST: + result = nsetopt_lvl_sock_broadcast(env, descP, eVal); + break; +#endif + +#if defined(SO_DEBUG) + case SOCKET_OPT_SOCK_DEBUG: + result = nsetopt_lvl_sock_debug(env, descP, eVal); + break; +#endif + +#if defined(SO_DONTROUTE) + case SOCKET_OPT_SOCK_DONTROUTE: + result = nsetopt_lvl_sock_dontroute(env, descP, eVal); + break; +#endif + +#if defined(SO_KEEPALIVE) + case SOCKET_OPT_SOCK_KEEPALIVE: + result = nsetopt_lvl_sock_keepalive(env, descP, eVal); + break; +#endif + +#if defined(SO_LINGER) + case SOCKET_OPT_SOCK_LINGER: + result = nsetopt_lvl_sock_linger(env, descP, eVal); + break; +#endif + +#if defined(SO_PEEK_OFF) + case SOCKET_OPT_SOCK_PEEK_OFF: + result = nsetopt_lvl_sock_peek_off(env, descP, eVal); + break; +#endif + +#if defined(SO_OOBINLINE) + case SOCKET_OPT_SOCK_OOBINLINE: + result = nsetopt_lvl_sock_oobinline(env, descP, eVal); + break; +#endif + +#if defined(SO_PRIORITY) + case SOCKET_OPT_SOCK_PRIORITY: + result = nsetopt_lvl_sock_priority(env, descP, eVal); + break; +#endif + +#if defined(SO_RCVBUF) + case SOCKET_OPT_SOCK_RCVBUF: + result = nsetopt_lvl_sock_rcvbuf(env, descP, eVal); + break; +#endif + +#if defined(SO_RCVLOWAT) + case SOCKET_OPT_SOCK_RCVLOWAT: + result = nsetopt_lvl_sock_rcvlowat(env, descP, eVal); + break; +#endif + +#if defined(SO_RCVTIMEO) + case SOCKET_OPT_SOCK_RCVTIMEO: + result = nsetopt_lvl_sock_rcvtimeo(env, descP, eVal); + break; +#endif + +#if defined(SO_REUSEADDR) + case SOCKET_OPT_SOCK_REUSEADDR: + result = nsetopt_lvl_sock_reuseaddr(env, descP, eVal); + break; +#endif + +#if defined(SO_REUSEPORT) + case SOCKET_OPT_SOCK_REUSEPORT: + result = nsetopt_lvl_sock_reuseport(env, descP, eVal); + break; +#endif + +#if defined(SO_SNDBUF) + case SOCKET_OPT_SOCK_SNDBUF: + result = nsetopt_lvl_sock_sndbuf(env, descP, eVal); + break; +#endif + +#if defined(SO_SNDLOWAT) + case SOCKET_OPT_SOCK_SNDLOWAT: + result = nsetopt_lvl_sock_sndlowat(env, descP, eVal); + break; +#endif + +#if defined(SO_SNDTIMEO) + case SOCKET_OPT_SOCK_SNDTIMEO: + result = nsetopt_lvl_sock_sndtimeo(env, descP, eVal); + break; +#endif + +#if defined(SO_TIMESTAMP) + case SOCKET_OPT_SOCK_TIMESTAMP: + result = nsetopt_lvl_sock_timestamp(env, descP, eVal); + break; +#endif + + default: + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_socket -> unknown opt (%d)\r\n", eOpt) ); + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_socket -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +#if defined(SO_BINDTODEVICE) +static +ERL_NIF_TERM nsetopt_lvl_sock_bindtodevice(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_str_opt(env, descP, + SOL_SOCKET, SO_BROADCAST, + IFNAMSIZ, eVal); +} +#endif + + +#if defined(SO_BROADCAST) +static +ERL_NIF_TERM nsetopt_lvl_sock_broadcast(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_BROADCAST, eVal); +} +#endif + + +#if defined(SO_DEBUG) +static +ERL_NIF_TERM nsetopt_lvl_sock_debug(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_DEBUG, eVal); +} +#endif + + +#if defined(SO_DONTROUTE) +static +ERL_NIF_TERM nsetopt_lvl_sock_dontroute(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_DONTROUTE, eVal); +} +#endif + + +#if defined(SO_KEEPALIVE) +static +ERL_NIF_TERM nsetopt_lvl_sock_keepalive(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_KEEPALIVE, eVal); +} +#endif + + +#if defined(SO_LINGER) +static +ERL_NIF_TERM nsetopt_lvl_sock_linger(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + struct linger val; + + if (decode_sock_linger(env, eVal, &val)) { + int optLen = sizeof(val); + int res = socket_setopt(descP->sock, SOL_SOCKET, SO_LINGER, + (void*) &val, optLen); + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + } else { + result = esock_make_error(env, esock_atom_einval); + } + + return result; +} +#endif + + +#if defined(SO_OOBINLINE) +static +ERL_NIF_TERM nsetopt_lvl_sock_oobinline(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_OOBINLINE, eVal); +} +#endif + + +#if defined(SO_PEEK_OFF) +static +ERL_NIF_TERM nsetopt_lvl_sock_peek_off(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_PEEK_OFF, eVal); +} +#endif + + +#if defined(SO_PRIORITY) +static +ERL_NIF_TERM nsetopt_lvl_sock_priority(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_PRIORITY, eVal); +} +#endif + + +#if defined(SO_RCVBUF) +static +ERL_NIF_TERM nsetopt_lvl_sock_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVBUF, eVal); +} +#endif + + +#if defined(SO_RCVLOWAT) +static +ERL_NIF_TERM nsetopt_lvl_sock_rcvlowat(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVLOWAT, eVal); +} +#endif + + +#if defined(SO_RCVTIMEO) +static +ERL_NIF_TERM nsetopt_lvl_sock_rcvtimeo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_timeval_opt(env, descP, SOL_SOCKET, SO_RCVTIMEO, eVal); +} +#endif + + +#if defined(SO_REUSEADDR) +static +ERL_NIF_TERM nsetopt_lvl_sock_reuseaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEADDR, eVal); +} +#endif + + +#if defined(SO_REUSEPORT) +static +ERL_NIF_TERM nsetopt_lvl_sock_reuseport(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEPORT, eVal); +} +#endif + + +#if defined(SO_SNDBUF) +static +ERL_NIF_TERM nsetopt_lvl_sock_sndbuf(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDBUF, eVal); +} +#endif + + +#if defined(SO_SNDLOWAT) +static +ERL_NIF_TERM nsetopt_lvl_sock_sndlowat(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDLOWAT, eVal); +} +#endif + + +#if defined(SO_SNDTIMEO) +static +ERL_NIF_TERM nsetopt_lvl_sock_sndtimeo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sock_sndtimeo -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + return nsetopt_timeval_opt(env, descP, SOL_SOCKET, SO_SNDTIMEO, eVal); +} +#endif + + +#if defined(SO_TIMESTAMP) +static +ERL_NIF_TERM nsetopt_lvl_sock_timestamp(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_SOCKET, SO_TIMESTAMP, eVal); +} +#endif + + + +/* nsetopt_lvl_ip - Level *IP* option(s) + */ +static +ERL_NIF_TERM nsetopt_lvl_ip(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ip -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(IP_ADD_MEMBERSHIP) + case SOCKET_OPT_IP_ADD_MEMBERSHIP: + result = nsetopt_lvl_ip_add_membership(env, descP, eVal); + break; +#endif + +#if defined(IP_ADD_SOURCE_MEMBERSHIP) + case SOCKET_OPT_IP_ADD_SOURCE_MEMBERSHIP: + result = nsetopt_lvl_ip_add_source_membership(env, descP, eVal); + break; +#endif + +#if defined(IP_BLOCK_SOURCE) + case SOCKET_OPT_IP_BLOCK_SOURCE: + result = nsetopt_lvl_ip_block_source(env, descP, eVal); + break; +#endif + +#if defined(IP_DROP_MEMBERSHIP) + case SOCKET_OPT_IP_DROP_MEMBERSHIP: + result = nsetopt_lvl_ip_drop_membership(env, descP, eVal); + break; +#endif + +#if defined(IP_DROP_SOURCE_MEMBERSHIP) + case SOCKET_OPT_IP_DROP_SOURCE_MEMBERSHIP: + result = nsetopt_lvl_ip_drop_source_membership(env, descP, eVal); + break; +#endif + +#if defined(IP_FREEBIND) + case SOCKET_OPT_IP_FREEBIND: + result = nsetopt_lvl_ip_freebind(env, descP, eVal); + break; +#endif + +#if defined(IP_HDRINCL) + case SOCKET_OPT_IP_HDRINCL: + result = nsetopt_lvl_ip_hdrincl(env, descP, eVal); + break; +#endif + +#if defined(IP_MINTTL) + case SOCKET_OPT_IP_MINTTL: + result = nsetopt_lvl_ip_minttl(env, descP, eVal); + break; +#endif + +#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE) + case SOCKET_OPT_IP_MSFILTER: + result = nsetopt_lvl_ip_msfilter(env, descP, eVal); + break; +#endif + +#if defined(IP_MTU_DISCOVER) + case SOCKET_OPT_IP_MTU_DISCOVER: + result = nsetopt_lvl_ip_mtu_discover(env, descP, eVal); + break; +#endif + +#if defined(IP_MULTICAST_ALL) + case SOCKET_OPT_IP_MULTICAST_ALL: + result = nsetopt_lvl_ip_multicast_all(env, descP, eVal); + break; +#endif + +#if defined(IP_MULTICAST_IF) + case SOCKET_OPT_IP_MULTICAST_IF: + result = nsetopt_lvl_ip_multicast_if(env, descP, eVal); + break; +#endif + +#if defined(IP_MULTICAST_LOOP) + case SOCKET_OPT_IP_MULTICAST_LOOP: + result = nsetopt_lvl_ip_multicast_loop(env, descP, eVal); + break; +#endif + +#if defined(IP_MULTICAST_TTL) + case SOCKET_OPT_IP_MULTICAST_TTL: + result = nsetopt_lvl_ip_multicast_ttl(env, descP, eVal); + break; +#endif + +#if defined(IP_NODEFRAG) + case SOCKET_OPT_IP_NODEFRAG: + result = nsetopt_lvl_ip_nodefrag(env, descP, eVal); + break; +#endif + +#if defined(IP_PKTINFO) + case SOCKET_OPT_IP_PKTINFO: + result = nsetopt_lvl_ip_pktinfo(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVDSTADDR) + case SOCKET_OPT_IP_RECVDSTADDR: + result = nsetopt_lvl_ip_recvdstaddr(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVERR) + case SOCKET_OPT_IP_RECVERR: + result = nsetopt_lvl_ip_recverr(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVIF) + case SOCKET_OPT_IP_RECVIF: + result = nsetopt_lvl_ip_recvif(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVOPTS) + case SOCKET_OPT_IP_RECVOPTS: + result = nsetopt_lvl_ip_recvopts(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVORIGDSTADDR) + case SOCKET_OPT_IP_RECVORIGDSTADDR: + result = nsetopt_lvl_ip_recvorigdstaddr(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVTOS) + case SOCKET_OPT_IP_RECVTOS: + result = nsetopt_lvl_ip_recvtos(env, descP, eVal); + break; +#endif + +#if defined(IP_RECVTTL) + case SOCKET_OPT_IP_RECVTTL: + result = nsetopt_lvl_ip_recvttl(env, descP, eVal); + break; +#endif + +#if defined(IP_RETOPTS) + case SOCKET_OPT_IP_RETOPTS: + result = nsetopt_lvl_ip_retopts(env, descP, eVal); + break; +#endif + +#if defined(IP_ROUTER_ALERT) + case SOCKET_OPT_IP_ROUTER_ALERT: + result = nsetopt_lvl_ip_router_alert(env, descP, eVal); + break; +#endif + +#if defined(IP_SENDSRCADDR) + case SOCKET_OPT_IP_SENDSRCADDR: + result = nsetopt_lvl_ip_sendsrcaddr(env, descP, eVal); + break; +#endif + +#if defined(IP_TOS) + case SOCKET_OPT_IP_TOS: + result = nsetopt_lvl_ip_tos(env, descP, eVal); + break; +#endif + +#if defined(IP_TRANSPARENT) + case SOCKET_OPT_IP_TRANSPARENT: + result = nsetopt_lvl_ip_transparent(env, descP, eVal); + break; +#endif + +#if defined(IP_TTL) + case SOCKET_OPT_IP_TTL: + result = nsetopt_lvl_ip_ttl(env, descP, eVal); + break; +#endif + +#if defined(IP_UNBLOCK_SOURCE) + case SOCKET_OPT_IP_UNBLOCK_SOURCE: + result = nsetopt_lvl_ip_unblock_source(env, descP, eVal); + break; +#endif + + default: + SSDBG( descP, ("SOCKET", "nsetopt_lvl_ip -> unknown opt (%d)\r\n", eOpt) ); + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ip -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +/* nsetopt_lvl_ip_add_membership - Level IP ADD_MEMBERSHIP option + * + * The value is a map with two attributes: multiaddr and interface. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is either the atom 'any' or a 4-tuple + * (IPv4 address). + */ +#if defined(IP_ADD_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_add_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_membership(env, descP, eVal, IP_ADD_MEMBERSHIP); +} +#endif + + +/* nsetopt_lvl_ip_add_source_membership - Level IP ADD_SOURCE_MEMBERSHIP option + * + * The value is a map with three attributes: multiaddr, interface and + * sourceaddr. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is always a 4-tuple (IPv4 address). + * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address). + * (IPv4 address). + */ +#if defined(IP_ADD_SOURCE_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_add_source_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_source(env, descP, eVal, + IP_ADD_SOURCE_MEMBERSHIP); +} +#endif + + +/* nsetopt_lvl_ip_block_source - Level IP BLOCK_SOURCE option + * + * The value is a map with three attributes: multiaddr, interface and + * sourceaddr. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is always a 4-tuple (IPv4 address). + * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address). + * (IPv4 address). + */ +#if defined(IP_BLOCK_SOURCE) +static +ERL_NIF_TERM nsetopt_lvl_ip_block_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_source(env, descP, eVal, IP_BLOCK_SOURCE); +} +#endif + + +/* nsetopt_lvl_ip_drop_membership - Level IP DROP_MEMBERSHIP option + * + * The value is a map with two attributes: multiaddr and interface. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is either the atom 'any' or a 4-tuple + * (IPv4 address). + * + * We should really have a common function with add_membership, + * since the code is virtually identical (except for the option + * value). + */ +#if defined(IP_DROP_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_drop_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_membership(env, descP, eVal, + IP_DROP_MEMBERSHIP); +} +#endif + + + +/* nsetopt_lvl_ip_drop_source_membership - Level IP DROP_SOURCE_MEMBERSHIP option + * + * The value is a map with three attributes: multiaddr, interface and + * sourceaddr. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is always a 4-tuple (IPv4 address). + * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address). + * (IPv4 address). + */ +#if defined(IP_DROP_SOURCE_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_drop_source_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_source(env, descP, eVal, + IP_DROP_SOURCE_MEMBERSHIP); +} +#endif + + + +/* nsetopt_lvl_ip_freebind - Level IP FREEBIND option + */ +#if defined(IP_FREEBIND) +static +ERL_NIF_TERM nsetopt_lvl_ip_freebind(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_FREEBIND, eVal); +} +#endif + + + +/* nsetopt_lvl_ip_hdrincl - Level IP HDRINCL option + */ +#if defined(IP_HDRINCL) +static +ERL_NIF_TERM nsetopt_lvl_ip_hdrincl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_HDRINCL, eVal); +} +#endif + + + +/* nsetopt_lvl_ip_minttl - Level IP MINTTL option + */ +#if defined(IP_MINTTL) +static +ERL_NIF_TERM nsetopt_lvl_ip_minttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_int_opt(env, descP, level, IP_MINTTL, eVal); +} +#endif + + + +/* nsetopt_lvl_ip_msfilter - Level IP MSFILTER option + * + * The value can be *either* the atom 'null' or a map of type ip_msfilter(). + */ +#if defined(IP_MSFILTER) && defined(IP_MSFILTER_SIZE) +static +ERL_NIF_TERM nsetopt_lvl_ip_msfilter(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + if (COMPARE(eVal, atom_null) == 0) { + return nsetopt_lvl_ip_msfilter_set(env, descP->sock, NULL, 0); + } else { + struct ip_msfilter* msfP; + Uint32 msfSz; + ERL_NIF_TERM eMultiAddr, eInterface, eFMode, eSList, elem, tail; + size_t sz; + unsigned int slistLen, idx; + + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast four attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 4)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_mode, &eFMode)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_slist, &eSList)) + return esock_make_error(env, esock_atom_einval); + + /* We start (decoding) with the slist, since without it we don't + * really know how much (memory) to allocate. + */ + if (!GET_LIST_LEN(env, eSList, &slistLen)) + return esock_make_error(env, esock_atom_einval); + + msfSz = IP_MSFILTER_SIZE(slistLen); + msfP = MALLOC(msfSz); + + if (!esock_decode_ip4_address(env, eMultiAddr, &msfP->imsf_multiaddr)) { + FREE(msfP); + return esock_make_error(env, esock_atom_einval); + } + + if (!esock_decode_ip4_address(env, eInterface, &msfP->imsf_interface)) { + FREE(msfP); + return esock_make_error(env, esock_atom_einval); + } + + if (!decode_ip_msfilter_mode(env, eFMode, &msfP->imsf_fmode)) { + FREE(msfP); + return esock_make_error(env, esock_atom_einval); + } + + /* And finally, extract the source addresses */ + msfP->imsf_numsrc = slistLen; + for (idx = 0; idx < slistLen; idx++) { + if (GET_LIST_ELEM(env, eSList, &elem, &tail)) { + if (!esock_decode_ip4_address(env, elem, &msfP->imsf_slist[idx])) { + FREE(msfP); + return esock_make_error(env, esock_atom_einval); + } else { + eSList = tail; + } + } + } + + /* And now, finally, set the option */ + result = nsetopt_lvl_ip_msfilter_set(env, descP->sock, msfP, msfSz); + FREE(msfP); + return result; + } + +} + + +static +BOOLEAN_T decode_ip_msfilter_mode(ErlNifEnv* env, + ERL_NIF_TERM eVal, + Uint32* mode) +{ + BOOLEAN_T result; + + if (COMPARE(eVal, atom_include) == 0) { + *mode = MCAST_INCLUDE; + result = TRUE; + } else if (COMPARE(eVal, atom_exclude) == 0) { + *mode = MCAST_EXCLUDE; + result = TRUE; + } else { + result = FALSE; + } + + return result; +} + + +static +ERL_NIF_TERM nsetopt_lvl_ip_msfilter_set(ErlNifEnv* env, + SOCKET sock, + struct ip_msfilter* msfP, + SOCKLEN_T optLen) +{ + ERL_NIF_TERM result; + int res; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + res = socket_setopt(sock, level, IP_MSFILTER, (void*) msfP, optLen); + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} +#endif // IP_MSFILTER + + + +/* nsetopt_lvl_ip_mtu_discover - Level IP MTU_DISCOVER option + * + * The value is an atom of the type ip_pmtudisc(). + */ +#if defined(IP_MTU_DISCOVER) +static +ERL_NIF_TERM nsetopt_lvl_ip_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + int val; + char* xres; + int res; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + if ((xres = decode_ip_pmtudisc(env, eVal, &val)) != NULL) { + + result = esock_make_error_str(env, xres); + + } else { + + res = socket_setopt(descP->sock, level, IP_MTU_DISCOVER, + &val, sizeof(val)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } + + return result; +} +#endif + + +/* nsetopt_lvl_ip_multicast_all - Level IP MULTICAST_ALL option + */ +#if defined(IP_MULTICAST_ALL) +static +ERL_NIF_TERM nsetopt_lvl_ip_multicast_all(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_MULTICAST_ALL, eVal); +} +#endif + + +/* nsetopt_lvl_ip_multicast_if - Level IP MULTICAST_IF option + * + * The value is either the atom 'any' or a 4-tuple. + */ +#if defined(IP_MULTICAST_IF) +static +ERL_NIF_TERM nsetopt_lvl_ip_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + struct in_addr ifAddr; + char* xres; + int res; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + if ((xres = esock_decode_ip4_address(env, eVal, &ifAddr)) != NULL) { + result = esock_make_error_str(env, xres); + } else { + + res = socket_setopt(descP->sock, level, IP_MULTICAST_LOOP, + &ifAddr, sizeof(ifAddr)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } + + return result; +} +#endif + + +/* nsetopt_lvl_ip_multicast_loop - Level IP MULTICAST_LOOP option + */ +#if defined(IP_MULTICAST_LOOP) +static +ERL_NIF_TERM nsetopt_lvl_ip_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_MULTICAST_LOOP, eVal); +} +#endif + + +/* nsetopt_lvl_ip_multicast_ttl - Level IP MULTICAST_TTL option + */ +#if defined(IP_MULTICAST_TTL) +static +ERL_NIF_TERM nsetopt_lvl_ip_multicast_ttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_int_opt(env, descP, level, IP_MULTICAST_TTL, eVal); +} +#endif + + +/* nsetopt_lvl_ip_nodefrag - Level IP NODEFRAG option + */ +#if defined(IP_NODEFRAG) +static +ERL_NIF_TERM nsetopt_lvl_ip_nodefrag(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_NODEFRAG, eVal); +} +#endif + + +/* nsetopt_lvl_ip_pktinfo - Level IP PKTINFO option + */ +#if defined(IP_PKTINFO) +static +ERL_NIF_TERM nsetopt_lvl_ip_pktinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_PKTINFO, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvdstaddr - Level IP RECVDSTADDR option + */ +#if defined(IP_RECVDSTADDR) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvdstaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVDSTADDR, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recverr - Level IP RECVERR option + */ +#if defined(IP_RECVERR) +static +ERL_NIF_TERM nsetopt_lvl_ip_recverr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVERR, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvif - Level IP RECVIF option + */ +#if defined(IP_RECVIF) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvif(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVIF, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvopts - Level IP RECVOPTS option + */ +#if defined(IP_RECVOPTS) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVOPTS, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvorigdstaddr - Level IP RECVORIGDSTADDR option + */ +#if defined(IP_RECVORIGDSTADDR) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVORIGDSTADDR, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvtos - Level IP RECVTOS option + */ +#if defined(IP_RECVTOS) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvtos(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVTOS, eVal); +} +#endif + + +/* nsetopt_lvl_ip_recvttl - Level IP RECVTTL option + */ +#if defined(IP_RECVTTL) +static +ERL_NIF_TERM nsetopt_lvl_ip_recvttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RECVTTL, eVal); +} +#endif + + +/* nsetopt_lvl_ip_retopts - Level IP RETOPTS option + */ +#if defined(IP_RETOPTS) +static +ERL_NIF_TERM nsetopt_lvl_ip_retopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_RETOPTS, eVal); +} +#endif + + +/* nsetopt_lvl_ip_router_alert - Level IP ROUTER_ALERT option + */ +#if defined(IP_ROUTER_ALERT) +static +ERL_NIF_TERM nsetopt_lvl_ip_router_alert(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_int_opt(env, descP, level, IP_ROUTER_ALERT, eVal); +} +#endif + + +/* nsetopt_lvl_ip_sendsrcaddr - Level IP SENDSRCADDR option + */ +#if defined(IP_SENDSRCADDR) +static +ERL_NIF_TERM nsetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_SENDSRCADDR, eVal); +} +#endif + + +/* nsetopt_lvl_ip_tos - Level IP TOS option + */ +#if defined(IP_TOS) +static +ERL_NIF_TERM nsetopt_lvl_ip_tos(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + ERL_NIF_TERM result; + int val; + + if (decode_ip_tos(env, eVal, &val)) { + int res = socket_setopt(descP->sock, level, IP_TOS, &val, sizeof(val)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } else { + result = esock_make_error(env, esock_atom_einval); + } + + return result; +} +#endif + + +/* nsetopt_lvl_ip_transparent - Level IP TRANSPARENT option + */ +#if defined(IP_TRANSPARENT) +static +ERL_NIF_TERM nsetopt_lvl_ip_transparent(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_bool_opt(env, descP, level, IP_TRANSPARENT, eVal); +} +#endif + + + +/* nsetopt_lvl_ip_ttl - Level IP TTL option + */ +#if defined(IP_TTL) +static +ERL_NIF_TERM nsetopt_lvl_ip_ttl(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return nsetopt_int_opt(env, descP, level, IP_TTL, eVal); +} +#endif + + + +/* nsetopt_lvl_ip_unblock_source - Level IP UNBLOCK_SOURCE option + * + * The value is a map with three attributes: multiaddr, interface and + * sourceaddr. + * The attribute 'multiaddr' is always a 4-tuple (IPv4 address). + * The attribute 'interface' is always a 4-tuple (IPv4 address). + * The attribute 'sourceaddr' is always a 4-tuple (IPv4 address). + * (IPv4 address). + */ +#if defined(IP_UNBLOCK_SOURCE) +static +ERL_NIF_TERM nsetopt_lvl_ip_unblock_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ip_update_source(env, descP, eVal, IP_UNBLOCK_SOURCE); +} +#endif + + + +#if defined(IP_ADD_MEMBERSHIP) || defined(IP_DROP_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ip_update_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt) +{ + ERL_NIF_TERM result, eMultiAddr, eInterface; + struct ip_mreq mreq; + char* xres; + int res; + size_t sz; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + // It must be a map + if (!IS_MAP(env, eVal)) + return enif_make_badarg(env); + + // It must have atleast two attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz >= 2)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface)) + return enif_make_badarg(env); + + if ((xres = esock_decode_ip4_address(env, + eMultiAddr, + &mreq.imr_multiaddr)) != NULL) + return esock_make_error_str(env, xres); + + if ((xres = esock_decode_ip4_address(env, + eInterface, + &mreq.imr_interface)) != NULL) + return esock_make_error_str(env, xres); + + res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} +#endif + + +#if defined(IP_ADD_SOURCE_MEMBERSHIP) || defined(IP_DROP_SOURCE_MEMBERSHIP) || defined(IP_BLOCK_SOURCE) || defined(IP_UNBLOCK_SOURCE) +static +ERL_NIF_TERM nsetopt_lvl_ip_update_source(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt) +{ + ERL_NIF_TERM result, eMultiAddr, eInterface, eSourceAddr; + struct ip_mreq_source mreq; + char* xres; + int res; + size_t sz; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + // It must be a map + if (!IS_MAP(env, eVal)) + return enif_make_badarg(env); + + // It must have atleast three attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz >= 3)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_sourceaddr, &eSourceAddr)) + return enif_make_badarg(env); + + if ((xres = esock_decode_ip4_address(env, + eMultiAddr, + &mreq.imr_multiaddr)) != NULL) + return esock_make_error_str(env, xres); + + if ((xres = esock_decode_ip4_address(env, + eInterface, + &mreq.imr_interface)) != NULL) + return esock_make_error_str(env, xres); + + if ((xres = esock_decode_ip4_address(env, + eSourceAddr, + &mreq.imr_sourceaddr)) != NULL) + return esock_make_error_str(env, xres); + + res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} +#endif + + + +/* *** Handling set of socket options for level = ipv6 *** */ + +/* nsetopt_lvl_ipv6 - Level *IPv6* option(s) + */ +#if defined(HAVE_IPV6) +static +ERL_NIF_TERM nsetopt_lvl_ipv6(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ipv6 -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(IPV6_ADDRFORM) + case SOCKET_OPT_IPV6_ADDRFORM: + result = nsetopt_lvl_ipv6_addrform(env, descP, eVal); + break; +#endif + +#if defined(IPV6_ADD_MEMBERSHIP) + case SOCKET_OPT_IPV6_ADD_MEMBERSHIP: + result = nsetopt_lvl_ipv6_add_membership(env, descP, eVal); + break; +#endif + +#if defined(IPV6_AUTHHDR) + case SOCKET_OPT_IPV6_AUTHHDR: + result = nsetopt_lvl_ipv6_authhdr(env, descP, eVal); + break; +#endif + +#if defined(IPV6_DROP_MEMBERSHIP) + case SOCKET_OPT_IPV6_DROP_MEMBERSHIP: + result = nsetopt_lvl_ipv6_drop_membership(env, descP, eVal); + break; +#endif + +#if defined(IPV6_DSTOPTS) + case SOCKET_OPT_IPV6_DSTOPTS: + result = nsetopt_lvl_ipv6_dstopts(env, descP, eVal); + break; +#endif + +#if defined(IPV6_FLOWINFO) + case SOCKET_OPT_IPV6_FLOWINFO: + result = nsetopt_lvl_ipv6_flowinfo(env, descP, eVal); + break; +#endif + +#if defined(IPV6_HOPLIMIT) + case SOCKET_OPT_IPV6_HOPLIMIT: + result = nsetopt_lvl_ipv6_hoplimit(env, descP, eVal); + break; +#endif + +#if defined(IPV6_HOPOPTS) + case SOCKET_OPT_IPV6_HOPOPTS: + result = nsetopt_lvl_ipv6_hopopts(env, descP, eVal); + break; +#endif + +#if defined(IPV6_MTU) + case SOCKET_OPT_IPV6_MTU: + result = nsetopt_lvl_ipv6_mtu(env, descP, eVal); + break; +#endif + +#if defined(IPV6_MTU_DISCOVER) + case SOCKET_OPT_IPV6_MTU_DISCOVER: + result = nsetopt_lvl_ipv6_mtu_discover(env, descP, eVal); + break; +#endif + +#if defined(IPV6_MULTICAST_HOPS) + case SOCKET_OPT_IPV6_MULTICAST_HOPS: + result = nsetopt_lvl_ipv6_multicast_hops(env, descP, eVal); + break; +#endif + +#if defined(IPV6_MULTICAST_IF) + case SOCKET_OPT_IPV6_MULTICAST_IF: + result = nsetopt_lvl_ipv6_multicast_if(env, descP, eVal); + break; +#endif + +#if defined(IPV6_MULTICAST_LOOP) + case SOCKET_OPT_IPV6_MULTICAST_LOOP: + result = nsetopt_lvl_ipv6_multicast_loop(env, descP, eVal); + break; +#endif + +#if defined(IPV6_RECVERR) + case SOCKET_OPT_IPV6_RECVERR: + result = nsetopt_lvl_ipv6_recverr(env, descP, eVal); + break; +#endif + +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) + case SOCKET_OPT_IPV6_RECVPKTINFO: + result = nsetopt_lvl_ipv6_recvpktinfo(env, descP, eVal); + break; +#endif + +#if defined(IPV6_ROUTER_ALERT) + case SOCKET_OPT_IPV6_ROUTER_ALERT: + result = nsetopt_lvl_ipv6_router_alert(env, descP, eVal); + break; +#endif + +#if defined(IPV6_RTHDR) + case SOCKET_OPT_IPV6_RTHDR: + result = nsetopt_lvl_ipv6_rthdr(env, descP, eVal); + break; +#endif + +#if defined(IPV6_UNICAST_HOPS) + case SOCKET_OPT_IPV6_UNICAST_HOPS: + result = nsetopt_lvl_ipv6_unicast_hops(env, descP, eVal); + break; +#endif + +#if defined(IPV6_V6ONLY) + case SOCKET_OPT_IPV6_V6ONLY: + result = nsetopt_lvl_ipv6_v6only(env, descP, eVal); + break; +#endif + + default: + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ipv6 -> unknown opt (%d)\r\n", eOpt) ); + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ipv6 -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +#if defined(IPV6_ADDRFORM) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_addrform(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + int res, edomain, domain; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ipv6_addrform -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + if (!GET_INT(env, eVal, &edomain)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_ipv6_addrform -> decode" + "\r\n edomain: %d" + "\r\n", edomain) ); + + if (!edomain2domain(edomain, &domain)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, ("SOCKET", "nsetopt_lvl_ipv6_addrform -> try set opt to %d\r\n", + domain) ); + + res = socket_setopt(descP->sock, + SOL_IPV6, IPV6_ADDRFORM, + &domain, sizeof(domain)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} +#endif + + +#if defined(IPV6_ADD_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_add_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ipv6_update_membership(env, descP, eVal, + IPV6_ADD_MEMBERSHIP); +} +#endif + + +#if defined(IPV6_AUTHHDR) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_authhdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, SOL_IPV6, IPV6_AUTHHDR, eVal); +} +#endif + + +#if defined(IPV6_DROP_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_drop_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_lvl_ipv6_update_membership(env, descP, eVal, + IPV6_DROP_MEMBERSHIP); +} +#endif + + +#if defined(IPV6_DSTOPTS) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_dstopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_DSTOPTS, eVal); +} +#endif + + +#if defined(IPV6_FLOWINFO) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_flowinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_FLOWINFO, eVal); +} +#endif + + +#if defined(IPV6_HOPLIMIT) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_hoplimit(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_HOPLIMIT, eVal); +} +#endif + + +#if defined(IPV6_HOPOPTS) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_hopopts(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_HOPOPTS, eVal); +} +#endif + + +#if defined(IPV6_MTU) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_mtu(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_int_opt(env, descP, level, IPV6_MTU, eVal); +} +#endif + + +/* nsetopt_lvl_ipv6_mtu_discover - Level IPv6 MTU_DISCOVER option + * + * The value is an atom of the type ipv6_pmtudisc(). + */ +#if defined(IPV6_MTU_DISCOVER) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + int val; + char* xres; + int res; + + if ((xres = decode_ipv6_pmtudisc(env, eVal, &val)) != NULL) { + + result = esock_make_error_str(env, xres); + + } else { +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + + res = socket_setopt(descP->sock, level, IPV6_MTU_DISCOVER, + &val, sizeof(val)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } + + return result; +} +#endif + + +#if defined(IPV6_MULTICAST_HOPS) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_int_opt(env, descP, level, IPV6_MULTICAST_HOPS, eVal); +} +#endif + + + +#if defined(IPV6_MULTICAST_IF) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_int_opt(env, descP, level, IPV6_MULTICAST_IF, eVal); +} +#endif + + + +#if defined(IPV6_MULTICAST_LOOP) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_MULTICAST_LOOP, eVal); +} +#endif + + +#if defined(IPV6_RECVERR) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_recverr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_RECVERR, eVal); +} +#endif + + +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif +#if defined(IPV6_RECVPKTINFO) + int opt = IPV6_RECVPKTINFO; +#else + int opt = IPV6_PKTINFO; +#endif + + return nsetopt_bool_opt(env, descP, level, opt, eVal); +} +#endif + + +#if defined(IPV6_ROUTER_ALERT) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_router_alert(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_int_opt(env, descP, level, IPV6_ROUTER_ALERT, eVal); +} +#endif + + + +#if defined(IPV6_RTHDR) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_rthdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_RTHDR, eVal); +} +#endif + + +#if defined(IPV6_UNICAST_HOPS) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_int_opt(env, descP, level, IPV6_UNICAST_HOPS, eVal); +} +#endif + + + +#if defined(IPV6_V6ONLY) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_v6only(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return nsetopt_bool_opt(env, descP, level, IPV6_V6ONLY, eVal); +} +#endif + + +#if defined(IPV6_ADD_MEMBERSHIP) || defined(IPV6_DROP_MEMBERSHIP) +static +ERL_NIF_TERM nsetopt_lvl_ipv6_update_membership(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal, + int opt) +{ + ERL_NIF_TERM result, eMultiAddr, eInterface; + struct ipv6_mreq mreq; + char* xres; + int res; + size_t sz; +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + // It must be a map + if (!IS_MAP(env, eVal)) + return enif_make_badarg(env); + + // It must have atleast two attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz >= 2)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_multiaddr, &eMultiAddr)) + return enif_make_badarg(env); + + if (!GET_MAP_VAL(env, eVal, atom_interface, &eInterface)) + return enif_make_badarg(env); + + if ((xres = esock_decode_ip6_address(env, + eMultiAddr, + &mreq.ipv6mr_multiaddr)) != NULL) + return esock_make_error_str(env, xres); + + if (!GET_UINT(env, eInterface, &mreq.ipv6mr_interface)) + return esock_make_error(env, esock_atom_einval); + + res = socket_setopt(descP->sock, level, opt, &mreq, sizeof(mreq)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} +#endif + + + +#endif // defined(HAVE_IPV6) + + + +/* nsetopt_lvl_tcp - Level *TCP* option(s) + */ +static +ERL_NIF_TERM nsetopt_lvl_tcp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_tcp -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(TCP_CONGESTION) + case SOCKET_OPT_TCP_CONGESTION: + result = nsetopt_lvl_tcp_congestion(env, descP, eVal); + break; +#endif + +#if defined(TCP_MAXSEG) + case SOCKET_OPT_TCP_MAXSEG: + result = nsetopt_lvl_tcp_maxseg(env, descP, eVal); + break; +#endif + +#if defined(TCP_NODELAY) + case SOCKET_OPT_TCP_NODELAY: + result = nsetopt_lvl_tcp_nodelay(env, descP, eVal); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* nsetopt_lvl_tcp_congestion - Level TCP CONGESTION option + */ +#if defined(TCP_CONGESTION) +static +ERL_NIF_TERM nsetopt_lvl_tcp_congestion(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + int max = SOCKET_OPT_TCP_CONGESTION_NAME_MAX+1; + + return nsetopt_str_opt(env, descP, IPPROTO_TCP, TCP_CONGESTION, max, eVal); +} +#endif + + +/* nsetopt_lvl_tcp_maxseg - Level TCP MAXSEG option + */ +#if defined(TCP_MAXSEG) +static +ERL_NIF_TERM nsetopt_lvl_tcp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, IPPROTO_TCP, TCP_MAXSEG, eVal); +} +#endif + + +/* nsetopt_lvl_tcp_nodelay - Level TCP NODELAY option + */ +#if defined(TCP_NODELAY) +static +ERL_NIF_TERM nsetopt_lvl_tcp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, IPPROTO_TCP, TCP_NODELAY, eVal); +} +#endif + + + +/* nsetopt_lvl_udp - Level *UDP* option(s) + */ +static +ERL_NIF_TERM nsetopt_lvl_udp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_udp -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(UDP_CORK) + case SOCKET_OPT_UDP_CORK: + result = nsetopt_lvl_udp_cork(env, descP, eVal); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* nsetopt_lvl_udp_cork - Level UDP CORK option + */ +#if defined(UDP_CORK) +static +ERL_NIF_TERM nsetopt_lvl_udp_cork(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, IPPROTO_UDP, UDP_CORK, eVal); +} +#endif + + + + +/* nsetopt_lvl_sctp - Level *SCTP* option(s) + */ +#if defined(HAVE_SCTP) +static +ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(SCTP_ASSOCINFO) + case SOCKET_OPT_SCTP_ASSOCINFO: + result = nsetopt_lvl_sctp_associnfo(env, descP, eVal); + break; +#endif + +#if defined(SCTP_AUTOCLOSE) + case SOCKET_OPT_SCTP_AUTOCLOSE: + result = nsetopt_lvl_sctp_autoclose(env, descP, eVal); + break; +#endif + +#if defined(SCTP_DISABLE_FRAGMENTS) + case SOCKET_OPT_SCTP_DISABLE_FRAGMENTS: + result = nsetopt_lvl_sctp_disable_fragments(env, descP, eVal); + break; +#endif + +#if defined(SCTP_EVENTS) + case SOCKET_OPT_SCTP_EVENTS: + result = nsetopt_lvl_sctp_events(env, descP, eVal); + break; +#endif + +#if defined(SCTP_INITMSG) + case SOCKET_OPT_SCTP_INITMSG: + result = nsetopt_lvl_sctp_initmsg(env, descP, eVal); + break; +#endif + +#if defined(SCTP_MAXSEG) + case SOCKET_OPT_SCTP_MAXSEG: + result = nsetopt_lvl_sctp_maxseg(env, descP, eVal); + break; +#endif + +#if defined(SCTP_NODELAY) + case SOCKET_OPT_SCTP_NODELAY: + result = nsetopt_lvl_sctp_nodelay(env, descP, eVal); + break; +#endif + +#if defined(SCTP_RTOINFO) + case SOCKET_OPT_SCTP_RTOINFO: + result = nsetopt_lvl_sctp_rtoinfo(env, descP, eVal); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* nsetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option + */ +#if defined(SCTP_ASSOCINFO) +static +ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eAssocId, eMaxRxt, eNumPeerDests; + ERL_NIF_TERM ePeerRWND, eLocalRWND, eCookieLife; + struct sctp_assocparams assocParams; + int res; + size_t sz; + unsigned int tmp; + Sint32 tmpAssocId; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + // It must be a map + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast ten attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 6)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> extract attributes\r\n") ); + + if (!GET_MAP_VAL(env, eVal, atom_assoc_id, &eAssocId)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max_rxt, &eMaxRxt)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_num_peer_dests, &eNumPeerDests)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_peer_rwnd, &ePeerRWND)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_local_rwnd, &eLocalRWND)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_cookie_life, &eCookieLife)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> decode attributes\r\n") ); + + /* On some platforms the assoc id is typed as an unsigned integer (uint32) + * So, to avoid warnings there, we always make an explicit cast... + */ + if (!GET_INT(env, eAssocId, &tmpAssocId)) + return esock_make_error(env, esock_atom_einval); + assocParams.sasoc_assoc_id = (typeof(assocParams.sasoc_assoc_id)) tmpAssocId; + + /* + * We should really make sure this is ok in erlang (to ensure that + * the values (max-rxt and num-peer-dests) fits in 16-bits). + * The value should be a 16-bit unsigned int... + * Both sasoc_asocmaxrxt and sasoc_number_peer_destinations. + */ + + if (!GET_UINT(env, eMaxRxt, &tmp)) + return esock_make_error(env, esock_atom_einval); + assocParams.sasoc_asocmaxrxt = (Uint16) tmp; + + if (!GET_UINT(env, eNumPeerDests, &tmp)) + return esock_make_error(env, esock_atom_einval); + assocParams.sasoc_number_peer_destinations = (Uint16) tmp; + + if (!GET_UINT(env, ePeerRWND, &assocParams.sasoc_peer_rwnd)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eLocalRWND, &assocParams.sasoc_local_rwnd)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eCookieLife, &assocParams.sasoc_cookie_life)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> set associnfo option\r\n") ); + + res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO, + &assocParams, sizeof(assocParams)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} +#endif + + +/* nsetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option + */ +#if defined(SCTP_AUTOCLOSE) +static +ERL_NIF_TERM nsetopt_lvl_sctp_autoclose(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_AUTOCLOSE, eVal); +} +#endif + + +/* nsetopt_lvl_sctp_disable_fragments - Level SCTP DISABLE_FRAGMENTS option + */ +#if defined(SCTP_DISABLE_FRAGMENTS) +static +ERL_NIF_TERM nsetopt_lvl_sctp_disable_fragments(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_DISABLE_FRAGMENTS, eVal); +} +#endif + + +/* nsetopt_lvl_sctp_events - Level SCTP EVENTS option + */ +#if defined(SCTP_EVENTS) +static +ERL_NIF_TERM nsetopt_lvl_sctp_events(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eDataIn, eAssoc, eAddr, eSndFailure; + ERL_NIF_TERM ePeerError, eShutdown, ePartialDelivery; + ERL_NIF_TERM eAdaptLayer, eAuth; +#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT) + ERL_NIF_TERM eSndDry; +#endif + struct sctp_event_subscribe events; + int res; + size_t sz; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + // It must be a map + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast ten attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 10)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> extract attributes\r\n") ); + + if (!GET_MAP_VAL(env, eVal, atom_data_in, &eDataIn)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_association, &eAssoc)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_address, &eAddr)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_send_failure, &eSndFailure)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_peer_error, &ePeerError)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_shutdown, &eShutdown)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_partial_delivery, &ePartialDelivery)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_adaptation_layer, &eAdaptLayer)) + return esock_make_error(env, esock_atom_einval); + +#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_AUTHENTICATION_EVENT) + if (!GET_MAP_VAL(env, eVal, atom_authentication, &eAuth)) + return esock_make_error(env, esock_atom_einval); +#endif + +#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT) + if (!GET_MAP_VAL(env, eVal, atom_sender_dry, &eSndDry)) + return esock_make_error(env, esock_atom_einval); +#endif + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> decode attributes\r\n") ); + + events.sctp_data_io_event = esock_decode_bool(eDataIn); + events.sctp_association_event = esock_decode_bool(eAssoc); + events.sctp_address_event = esock_decode_bool(eAddr); + events.sctp_send_failure_event = esock_decode_bool(eSndFailure); + events.sctp_peer_error_event = esock_decode_bool(ePeerError); + events.sctp_shutdown_event = esock_decode_bool(eShutdown); + events.sctp_partial_delivery_event = esock_decode_bool(ePartialDelivery); + events.sctp_adaptation_layer_event = esock_decode_bool(eAdaptLayer); +#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_AUTHENTICATION_EVENT) + events.sctp_authentication_event = esock_decode_bool(eAuth); +#endif +#if defined(HAVE_STRUCT_SCTP_EVENT_SUBSCRIBE_SCTP_SENDER_DRY_EVENT) + events.sctp_sender_dry_event = esock_decode_bool(eSndDry); +#endif + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> set events option\r\n") ); + + res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_EVENTS, + &events, sizeof(events)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} +#endif + + +/* nsetopt_lvl_sctp_initmsg - Level SCTP INITMSG option + */ +#if defined(SCTP_INITMSG) +static +ERL_NIF_TERM nsetopt_lvl_sctp_initmsg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eNumOut, eMaxIn, eMaxAttempts, eMaxInitTO; + struct sctp_initmsg initMsg; + int res; + size_t sz; + unsigned int tmp; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_initmsg -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + // It must be a map + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast ten attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 4)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_initmsg -> extract attributes\r\n") ); + + if (!GET_MAP_VAL(env, eVal, atom_num_outstreams, &eNumOut)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max_instreams, &eMaxIn)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max_attempts, &eMaxAttempts)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max_init_timeo, &eMaxInitTO)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_initmsg -> decode attributes\r\n") ); + + if (!GET_UINT(env, eNumOut, &tmp)) + return esock_make_error(env, esock_atom_einval); + initMsg.sinit_num_ostreams = (Uint16) tmp; + + if (!GET_UINT(env, eMaxIn, &tmp)) + return esock_make_error(env, esock_atom_einval); + initMsg.sinit_max_instreams = (Uint16) tmp; + + if (!GET_UINT(env, eMaxAttempts, &tmp)) + return esock_make_error(env, esock_atom_einval); + initMsg.sinit_max_attempts = (Uint16) tmp; + + if (!GET_UINT(env, eMaxInitTO, &tmp)) + return esock_make_error(env, esock_atom_einval); + initMsg.sinit_max_init_timeo = (Uint16) tmp; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_initmsg -> set initmsg option\r\n") ); + + res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_INITMSG, + &initMsg, sizeof(initMsg)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_initmsg -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} +#endif + + +/* nsetopt_lvl_sctp_maxseg - Level SCTP MAXSEG option + */ +#if defined(SCTP_MAXSEG) +static +ERL_NIF_TERM nsetopt_lvl_sctp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_MAXSEG, eVal); +} +#endif + + +/* nsetopt_lvl_sctp_nodelay - Level SCTP NODELAY option + */ +#if defined(SCTP_NODELAY) +static +ERL_NIF_TERM nsetopt_lvl_sctp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + return nsetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_NODELAY, eVal); +} +#endif + + +/* nsetopt_lvl_sctp_rtoinfo - Level SCTP RTOINFO option + */ +#if defined(SCTP_RTOINFO) +static +ERL_NIF_TERM nsetopt_lvl_sctp_rtoinfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eAssocId, eInitial, eMax, eMin; + struct sctp_rtoinfo rtoInfo; + int res; + size_t sz; + Sint32 tmpAssocId; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + // It must be a map + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast ten attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 4)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> extract attributes\r\n") ); + + if (!GET_MAP_VAL(env, eVal, atom_assoc_id, &eAssocId)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_initial, &eInitial)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max, &eMax)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_min, &eMin)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> decode attributes\r\n") ); + + /* On some platforms the assoc id is typed as an unsigned integer (uint32) + * So, to avoid warnings there, we always make an explicit cast... + */ + if (!GET_INT(env, eAssocId, &tmpAssocId)) + return esock_make_error(env, esock_atom_einval); + rtoInfo.srto_assoc_id = (typeof(rtoInfo.srto_assoc_id)) tmpAssocId; + + if (!GET_UINT(env, eInitial, &rtoInfo.srto_initial)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eMax, &rtoInfo.srto_max)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eMin, &rtoInfo.srto_min)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> set associnfo option\r\n") ); + + res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_RTOINFO, + &rtoInfo, sizeof(rtoInfo)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_rtoinfo -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} +#endif + + + +#endif // defined(HAVE_SCTP) + + + + +/* nsetopt_bool_opt - set an option that has an (integer) bool value + */ +static +ERL_NIF_TERM nsetopt_bool_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + BOOLEAN_T val; + int ival, res; + + val = esock_decode_bool(eVal); + + ival = (val) ? 1 : 0; + res = socket_setopt(descP->sock, level, opt, &ival, sizeof(ival)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + return result; +} + + +/* nsetopt_int_opt - set an option that has an integer value + */ +static +ERL_NIF_TERM nsetopt_int_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + int val; + + if (GET_INT(env, eVal, &val)) { + int res; + + /* + SSDBG( descP, + ("SOCKET", "nsetopt_int_opt -> set option" + "\r\n opt: %d" + "\r\n val: %d" + "\r\n", opt, val) ); + */ + + res = socket_setopt(descP->sock, level, opt, &val, sizeof(val)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } else { + result = esock_make_error(env, esock_atom_einval); + } + + return result; +} + + +/* nsetopt_str_opt - set an option that has an string value + */ +static +ERL_NIF_TERM nsetopt_str_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + int max, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + char* val = MALLOC(max); + + if (GET_STR(env, eVal, val, max) > 0) { + int optLen = strlen(val); + int res = socket_setopt(descP->sock, level, opt, &val, optLen); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + } else { + result = esock_make_error(env, esock_atom_einval); + } + + FREE(val); + + return result; +} + + +/* nsetopt_timeval_opt - set an option that has an (timeval) bool value + */ +static +ERL_NIF_TERM nsetopt_timeval_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + struct timeval timeVal; + int res; + char* xres; + + SSDBG( descP, + ("SOCKET", "nsetopt_timeval_opt -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + if ((xres = esock_decode_timeval(env, eVal, &timeVal)) != NULL) + return esock_make_error_str(env, xres); + + SSDBG( descP, + ("SOCKET", "nsetopt_timeval_opt -> set timeval option\r\n") ); + + res = socket_setopt(descP->sock, level, opt, &timeVal, sizeof(timeVal)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_timeval_opt -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} + + + +static +BOOLEAN_T elevel2level(BOOLEAN_T isEncoded, + int eLevel, + BOOLEAN_T* isOTP, + int* level) +{ + BOOLEAN_T result; + + if (isEncoded) { + switch (eLevel) { + case SOCKET_OPT_LEVEL_OTP: + *isOTP = TRUE; + *level = -1; + result = TRUE; + break; + + case SOCKET_OPT_LEVEL_SOCKET: + *isOTP = FALSE; + *level = SOL_SOCKET; + result = TRUE; + break; + + case SOCKET_OPT_LEVEL_IP: + *isOTP = FALSE; +#if defined(SOL_IP) + *level = SOL_IP; +#else + *level = IPPROTO_IP; +#endif + result = TRUE; + break; + +#if defined(HAVE_IPV6) + case SOCKET_OPT_LEVEL_IPV6: + *isOTP = FALSE; +#if defined(SOL_IPV6) + *level = SOL_IPV6; +#else + *level = IPPROTO_IPV6; +#endif + result = TRUE; + break; +#endif + + case SOCKET_OPT_LEVEL_TCP: + *isOTP = FALSE; + *level = IPPROTO_TCP; + result = TRUE; + break; + + case SOCKET_OPT_LEVEL_UDP: + *isOTP = FALSE; + *level = IPPROTO_UDP; + result = TRUE; + break; + +#ifdef HAVE_SCTP + case SOCKET_OPT_LEVEL_SCTP: + *isOTP = FALSE; + *level = IPPROTO_SCTP; + result = TRUE; + break; +#endif + + default: + *isOTP = FALSE; + *level = -1; + result = FALSE; + break; + } + } else { + *isOTP = FALSE; + *level = eLevel; + result = TRUE; + } + + return result; +} + + + +/* +++ socket_setopt +++ + * + * <Per H @ Tail-f> + * The original code here had problems that possibly + * only occur if you abuse it for non-INET sockets, but anyway: + * a) If the getsockopt for SO_PRIORITY or IP_TOS failed, the actual + * requested setsockopt was never even attempted. + * b) If {get,set}sockopt for one of IP_TOS and SO_PRIORITY failed, + * but ditto for the other worked and that was actually the requested + * option, failure was still reported to erlang. + * </Per H @ Tail-f> + * + * <PaN> + * The relations between SO_PRIORITY, TOS and other options + * is not what you (or at least I) would expect...: + * If TOS is set after priority, priority is zeroed. + * If any other option is set after tos, tos might be zeroed. + * Therefore, save tos and priority. If something else is set, + * restore both after setting, if tos is set, restore only + * prio and if prio is set restore none... All to keep the + * user feeling socket options are independent. + * </PaN> + */ +static +int socket_setopt(int sock, int level, int opt, + const void* optVal, const socklen_t optLen) +{ + int res; + +#if defined(IP_TOS) && defined(SOL_IP) && defined(SO_PRIORITY) + int tmpIValPRIO; + int tmpIValTOS; + int resPRIO; + int resTOS; + SOCKOPTLEN_T tmpArgSzPRIO = sizeof(tmpIValPRIO); + SOCKOPTLEN_T tmpArgSzTOS = sizeof(tmpIValTOS); + + resPRIO = sock_getopt(sock, SOL_SOCKET, SO_PRIORITY, + &tmpIValPRIO, &tmpArgSzPRIO); + resTOS = sock_getopt(sock, SOL_IP, IP_TOS, + &tmpIValTOS, &tmpArgSzTOS); + + res = sock_setopt(sock, level, opt, optVal, optLen); + if (res == 0) { + + /* Ok, now we *maybe* need to "maybe" restore PRIO and TOS... + * maybe, possibly, ... + */ + + if (opt != SO_PRIORITY) { + if ((opt != IP_TOS) && (resTOS == 0)) { + resTOS = sock_setopt(sock, SOL_IP, IP_TOS, + (void *) &tmpIValTOS, + tmpArgSzTOS); + res = resTOS; + } + if ((res == 0) && (resPRIO == 0)) { + resPRIO = sock_setopt(sock, SOL_SOCKET, SO_PRIORITY, + &tmpIValPRIO, + tmpArgSzPRIO); + + /* Some kernels set a SO_PRIORITY by default + * that you are not permitted to reset, + * silently ignore this error condition. + */ + + if ((resPRIO != 0) && (sock_errno() == EPERM)) { + res = 0; + } else { + res = resPRIO; + } + } + } + } + +#else + + res = sock_setopt(sock, level, opt, optVal, optLen); + +#endif + + return res; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_getopt + * + * Description: + * Get socket option. + * Its possible to use a "raw" mode (not encoded). That is, we do not + * interpret level and opt. They are passed "as is" to the + * getsockopt function call. The value in this case will "copied" as + * is and provided to the user in the form of a binary. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * IsEncoded - Are the "arguments" encoded or not. + * Level - Level of the socket option. + * Opt - The socket option. + */ + +static +ERL_NIF_TERM nif_getopt(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + int eLevel, level = -1; + ERL_NIF_TERM eIsEncoded, eOpt; + BOOLEAN_T isEncoded, isOTP; + + SGDBG( ("SOCKET", "nif_getopt -> entry with argc: %d\r\n", argc) ); + + if ((argc != 4) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP) || + !GET_INT(env, argv[2], &eLevel)) { + SGDBG( ("SOCKET", "nif_getopt -> failed processing args\r\n") ); + return enif_make_badarg(env); + } + eIsEncoded = argv[1]; + eOpt = argv[3]; // Is "normally" an int, but if raw mode: {Int, ValueSz} + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + SSDBG( descP, + ("SOCKET", "nif_getopt -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n eIsEncoded: %T" + "\r\n eLevel: %d" + "\r\n eOpt: %T" + "\r\n", descP->sock, argv[0], eIsEncoded, eLevel, eOpt) ); + + isEncoded = esock_decode_bool(eIsEncoded); + + if (!elevel2level(isEncoded, eLevel, &isOTP, &level)) + return esock_make_error(env, esock_atom_einval); + + return ngetopt(env, descP, isEncoded, isOTP, level, eOpt); +#endif // if defined(__WIN32__) +} + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM ngetopt(ErlNifEnv* env, + SocketDescriptor* descP, + BOOLEAN_T isEncoded, + BOOLEAN_T isOTP, + int level, + ERL_NIF_TERM eOpt) +{ + ERL_NIF_TERM result; + int opt; + + SSDBG( descP, + ("SOCKET", "ngetopt -> entry with" + "\r\n isEncoded: %s" + "\r\n isOTP: %s" + "\r\n level: %d" + "\r\n eOpt: %T" + "\r\n", B2S(isEncoded), B2S(isOTP), level, eOpt) ); + + if (isOTP) { + /* These are not actual socket options, + * but options for our implementation. + */ + if (GET_INT(env, eOpt, &opt)) + result = ngetopt_otp(env, descP, opt); + else + result = esock_make_error(env, esock_atom_einval); + } else if (!isEncoded) { + result = ngetopt_native(env, descP, level, eOpt); + } else { + if (GET_INT(env, eOpt, &opt)) + result = ngetopt_level(env, descP, level, opt); + else + result = esock_make_error(env, esock_atom_einval); + } + + SSDBG( descP, + ("SOCKET", "ngetopt -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + + +/* ngetopt_otp - Handle OTP (level) options + */ +static +ERL_NIF_TERM ngetopt_otp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_otp -> entry with" + "\r\n eOpt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { + case SOCKET_OPT_OTP_DEBUG: + result = ngetopt_otp_debug(env, descP); + break; + + case SOCKET_OPT_OTP_IOW: + result = ngetopt_otp_iow(env, descP); + break; + + case SOCKET_OPT_OTP_CTRL_PROC: + result = ngetopt_otp_ctrl_proc(env, descP); + break; + + case SOCKET_OPT_OTP_RCVBUF: + result = ngetopt_otp_rcvbuf(env, descP); + break; + + case SOCKET_OPT_OTP_RCVCTRLBUF: + result = ngetopt_otp_rcvctrlbuf(env, descP); + break; + + case SOCKET_OPT_OTP_SNDCTRLBUF: + result = ngetopt_otp_sndctrlbuf(env, descP); + break; + + case SOCKET_OPT_OTP_FD: + result = ngetopt_otp_fd(env, descP); + break; + + /* *** INTERNAL *** */ + case SOCKET_OPT_OTP_DOMAIN: + result = ngetopt_otp_domain(env, descP); + break; + + case SOCKET_OPT_OTP_TYPE: + result = ngetopt_otp_type(env, descP); + break; + + case SOCKET_OPT_OTP_PROTOCOL: + result = ngetopt_otp_protocol(env, descP); + break; + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_otp -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +/* ngetopt_otp_debug - Handle the OTP (level) debug option + */ +static +ERL_NIF_TERM ngetopt_otp_debug(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = esock_encode_bool(descP->dbg); + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_iow - Handle the OTP (level) iow option + */ +static +ERL_NIF_TERM ngetopt_otp_iow(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = esock_encode_bool(descP->iow); + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_ctrl_proc - Handle the OTP (level) controlling_process option + */ +static +ERL_NIF_TERM ngetopt_otp_ctrl_proc(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = MKPID(env, &descP->ctrlPid); + + return esock_make_ok2(env, eVal); +} + + + +/* ngetopt_otp_rcvbuf - Handle the OTP (level) rcvbuf option + */ +static +ERL_NIF_TERM ngetopt_otp_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal; + + if (descP->rNum == 0) { + eVal = MKI(env, descP->rBufSz); + } else { + eVal = MKT2(env, MKI(env, descP->rNum), MKI(env, descP->rBufSz)); + } + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_rcvctrlbuf - Handle the OTP (level) rcvctrlbuf option + */ +static +ERL_NIF_TERM ngetopt_otp_rcvctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = MKI(env, descP->rCtrlSz); + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_sndctrlbuf - Handle the OTP (level) sndctrlbuf option + */ +static +ERL_NIF_TERM ngetopt_otp_sndctrlbuf(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = MKI(env, descP->wCtrlSz); + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_fd - Handle the OTP (level) fd option + */ +static +ERL_NIF_TERM ngetopt_otp_fd(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM eVal = MKI(env, descP->sock); + + return esock_make_ok2(env, eVal); +} + + +/* ngetopt_otp_domain - Handle the OTP (level) domain option + */ +static +ERL_NIF_TERM ngetopt_otp_domain(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val = descP->domain; + + switch (val) { + case AF_INET: + result = esock_make_ok2(env, esock_atom_inet); + break; + +#if defined(HAVE_IN6) && defined(AF_INET6) + case AF_INET6: + result = esock_make_ok2(env, esock_atom_inet6); + break; +#endif + +#if defined(HAVE_SYS_UN_H) + case AF_UNIX: + result = esock_make_ok2(env, esock_atom_local); + break; +#endif + + default: + result = esock_make_error(env, + MKT2(env, + esock_atom_unknown, + MKI(env, val))); + break; + } + + return result; +} + + +/* ngetopt_otp_type - Handle the OTP (level) type options. + */ +static +ERL_NIF_TERM ngetopt_otp_type(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val = descP->type; + + switch (val) { + case SOCK_STREAM: + result = esock_make_ok2(env, esock_atom_stream); + break; + + case SOCK_DGRAM: + result = esock_make_ok2(env, esock_atom_dgram); + break; + +#ifdef HAVE_SCTP + case SOCK_SEQPACKET: + result = esock_make_ok2(env, esock_atom_seqpacket); + break; +#endif + case SOCK_RAW: + result = esock_make_ok2(env, esock_atom_raw); + break; + + case SOCK_RDM: + result = esock_make_ok2(env, esock_atom_rdm); + break; + + default: + result = esock_make_error(env, + MKT2(env, esock_atom_unknown, MKI(env, val))); + break; + } + + return result; +} + + +/* ngetopt_otp_protocol - Handle the OTP (level) protocol options. + */ +static +ERL_NIF_TERM ngetopt_otp_protocol(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val = descP->protocol; + + switch (val) { + case IPPROTO_IP: + result = esock_make_ok2(env, esock_atom_ip); + break; + + case IPPROTO_TCP: + result = esock_make_ok2(env, esock_atom_tcp); + break; + + case IPPROTO_UDP: + result = esock_make_ok2(env, esock_atom_udp); + break; + +#if defined(HAVE_SCTP) + case IPPROTO_SCTP: + result = esock_make_ok2(env, esock_atom_sctp); + break; +#endif + + default: + result = esock_make_error(env, + MKT2(env, esock_atom_unknown, MKI(env, val))); + break; + } + + return result; +} + + + +/* The option has *not* been encoded. Instead it has been provided + * in "native mode" (option is provided as is). In this case it will have the + * format: {NativeOpt :: integer(), ValueSize :: non_neg_integer()} + */ +static +ERL_NIF_TERM ngetopt_native(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + ERL_NIF_TERM eOpt) +{ + ERL_NIF_TERM result = enif_make_badarg(env); + int opt; + Uint16 valueType; + SOCKOPTLEN_T valueSz; + + SSDBG( descP, + ("SOCKET", "ngetopt_native -> entry with" + "\r\n level: %d" + "\r\n eOpt: %T" + "\r\n", level, eOpt) ); + + /* <KOLLA> + * We should really make it possible to specify more common specific types, + * such as integer or boolean (instead of the size)... + * </KOLLA> + */ + + if (decode_native_get_opt(env, eOpt, &opt, &valueType, (int*) &valueSz)) { + + SSDBG( descP, + ("SOCKET", "ngetopt_native -> decoded opt" + "\r\n valueType: %d (%s)" + "\r\n ValueSize: %d" + "\r\n", valueType, VT2S(valueType), valueSz) ); + + switch (valueType) { + case SOCKET_OPT_VALUE_TYPE_UNSPEC: + result = ngetopt_native_unspec(env, descP, level, opt, valueSz); + break; + case SOCKET_OPT_VALUE_TYPE_INT: + result = ngetopt_int_opt(env, descP, level, opt); + break; + case SOCKET_OPT_VALUE_TYPE_BOOL: + result = ngetopt_bool_opt(env, descP, level, opt); + break; + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + } else { + result = esock_make_error(env, esock_atom_einval); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_native -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +static +ERL_NIF_TERM ngetopt_native_unspec(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + SOCKOPTLEN_T valueSz) +{ + ERL_NIF_TERM result = esock_make_error(env, esock_atom_einval); + int res; + + SSDBG( descP, + ("SOCKET", "ngetopt_native_unspec -> entry with" + "\r\n level: %d" + "\r\n opt: %d" + "\r\n valueSz: %d" + "\r\n", level, opt, valueSz) ); + + if (valueSz == 0) { + res = sock_getopt(descP->sock, level, opt, NULL, NULL); + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + } else { + SOCKOPTLEN_T vsz = valueSz; + ErlNifBinary val; + + SSDBG( descP, ("SOCKET", "ngetopt_native_unspec -> try alloc buffer\r\n") ); + + if (ALLOC_BIN(vsz, &val)) { + int saveErrno; + res = sock_getopt(descP->sock, level, opt, val.data, &vsz); + if (res != 0) { + saveErrno = sock_errno(); + + result = esock_make_error_errno(env, saveErrno); + } else { + + /* Did we use all of the buffer? */ + if (vsz == val.size) { + + result = esock_make_ok2(env, MKBIN(env, &val)); + + } else { + + ERL_NIF_TERM tmp; + + tmp = MKBIN(env, &val); + tmp = MKSBIN(env, tmp, 0, vsz); + + result = esock_make_ok2(env, tmp); + } + } + } else { + result = enif_make_badarg(env); + } + } + + SSDBG( descP, + ("SOCKET", "ngetopt_native_unspec -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + + +/* ngetopt_level - A "proper" level (option) has been specified + */ +static +ERL_NIF_TERM ngetopt_level(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_level -> entry with" + "\r\n level: %d" + "\r\n eOpt: %d" + "\r\n", level, eOpt) ); + + switch (level) { + case SOL_SOCKET: + result = ngetopt_lvl_socket(env, descP, eOpt); + break; + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + result = ngetopt_lvl_ip(env, descP, eOpt); + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + result = ngetopt_lvl_ipv6(env, descP, eOpt); + break; +#endif + + case IPPROTO_TCP: + result = ngetopt_lvl_tcp(env, descP, eOpt); + break; + + case IPPROTO_UDP: + result = ngetopt_lvl_udp(env, descP, eOpt); + break; + +#if defined(HAVE_SCTP) + case IPPROTO_SCTP: + result = ngetopt_lvl_sctp(env, descP, eOpt); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_level -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +/* ngetopt_lvl_socket - Level *SOCKET* option + */ +static +ERL_NIF_TERM ngetopt_lvl_socket(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_socket -> entry with" + "\r\n eOpt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(SO_ACCEPTCONN) + case SOCKET_OPT_SOCK_ACCEPTCONN: + result = ngetopt_lvl_sock_acceptconn(env, descP); + break; +#endif + +#if defined(SO_BINDTODEVICE) + case SOCKET_OPT_SOCK_BINDTODEVICE: + result = ngetopt_lvl_sock_bindtodevice(env, descP); + break; +#endif + +#if defined(SO_BROADCAST) + case SOCKET_OPT_SOCK_BROADCAST: + result = ngetopt_lvl_sock_broadcast(env, descP); + break; +#endif + +#if defined(SO_DEBUG) + case SOCKET_OPT_SOCK_DEBUG: + result = ngetopt_lvl_sock_debug(env, descP); + break; +#endif + +#if defined(SO_DOMAIN) + case SOCKET_OPT_SOCK_DOMAIN: + result = ngetopt_lvl_sock_domain(env, descP); + break; +#endif + +#if defined(SO_DONTROUTE) + case SOCKET_OPT_SOCK_DONTROUTE: + result = ngetopt_lvl_sock_dontroute(env, descP); + break; +#endif + +#if defined(SO_KEEPALIVE) + case SOCKET_OPT_SOCK_KEEPALIVE: + result = ngetopt_lvl_sock_keepalive(env, descP); + break; +#endif + +#if defined(SO_LINGER) + case SOCKET_OPT_SOCK_LINGER: + result = ngetopt_lvl_sock_linger(env, descP); + break; +#endif + +#if defined(SO_OOBINLINE) + case SOCKET_OPT_SOCK_OOBINLINE: + result = ngetopt_lvl_sock_oobinline(env, descP); + break; +#endif + +#if defined(SO_PEEK_OFF) + case SOCKET_OPT_SOCK_PEEK_OFF: + result = ngetopt_lvl_sock_peek_off(env, descP); + break; +#endif + +#if defined(SO_PRIORITY) + case SOCKET_OPT_SOCK_PRIORITY: + result = ngetopt_lvl_sock_priority(env, descP); + break; +#endif + +#if defined(SO_PROTOCOL) + case SOCKET_OPT_SOCK_PROTOCOL: + result = ngetopt_lvl_sock_protocol(env, descP); + break; +#endif + +#if defined(SO_RCVBUF) + case SOCKET_OPT_SOCK_RCVBUF: + result = ngetopt_lvl_sock_rcvbuf(env, descP); + break; +#endif + +#if defined(SO_RCVLOWAT) + case SOCKET_OPT_SOCK_RCVLOWAT: + result = ngetopt_lvl_sock_rcvlowat(env, descP); + break; +#endif + +#if defined(SO_RCVTIMEO) + case SOCKET_OPT_SOCK_RCVTIMEO: + result = ngetopt_lvl_sock_rcvtimeo(env, descP); + break; +#endif + +#if defined(SO_REUSEADDR) + case SOCKET_OPT_SOCK_REUSEADDR: + result = ngetopt_lvl_sock_reuseaddr(env, descP); + break; +#endif + +#if defined(SO_REUSEPORT) + case SOCKET_OPT_SOCK_REUSEPORT: + result = ngetopt_lvl_sock_reuseport(env, descP); + break; +#endif + +#if defined(SO_SNDBUF) + case SOCKET_OPT_SOCK_SNDBUF: + result = ngetopt_lvl_sock_sndbuf(env, descP); + break; +#endif + +#if defined(SO_SNDLOWAT) + case SOCKET_OPT_SOCK_SNDLOWAT: + result = ngetopt_lvl_sock_sndlowat(env, descP); + break; +#endif + +#if defined(SO_SNDTIMEO) + case SOCKET_OPT_SOCK_SNDTIMEO: + result = ngetopt_lvl_sock_sndtimeo(env, descP); + break; +#endif + +#if defined(SO_TIMESTAMP) + case SOCKET_OPT_SOCK_TIMESTAMP: + result = ngetopt_lvl_sock_timestamp(env, descP); + break; +#endif + +#if defined(SO_TYPE) + case SOCKET_OPT_SOCK_TYPE: + result = ngetopt_lvl_sock_type(env, descP); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_socket -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +#if defined(SO_ACCEPTCONN) +static +ERL_NIF_TERM ngetopt_lvl_sock_acceptconn(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_ACCEPTCONN); +} +#endif + + +#if defined(SO_BINDTODEVICE) +static +ERL_NIF_TERM ngetopt_lvl_sock_bindtodevice(ErlNifEnv* env, + SocketDescriptor* descP) +{ + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sock_bindtodevice -> entry with\r\n") ); + + return ngetopt_str_opt(env, descP, SOL_SOCKET, SO_BROADCAST, IFNAMSIZ+1); +} +#endif + + +#if defined(SO_BROADCAST) +static +ERL_NIF_TERM ngetopt_lvl_sock_broadcast(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_BROADCAST); +} +#endif + + +#if defined(SO_DEBUG) +static +ERL_NIF_TERM ngetopt_lvl_sock_debug(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_DEBUG); +} +#endif + + +#if defined(SO_DOMAIN) +static +ERL_NIF_TERM ngetopt_lvl_sock_domain(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + res = sock_getopt(descP->sock, SOL_SOCKET, SO_DOMAIN, + &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + switch (val) { + case AF_INET: + result = esock_make_ok2(env, esock_atom_inet); + break; + +#if defined(HAVE_IN6) && defined(AF_INET6) + case AF_INET6: + result = esock_make_ok2(env, esock_atom_inet6); + break; +#endif + +#ifdef HAVE_SYS_UN_H + case AF_UNIX: + result = esock_make_ok2(env, esock_atom_local); + break; +#endif + + default: + result = esock_make_error(env, + MKT2(env, + esock_atom_unknown, + MKI(env, val))); + break; + } + } + + return result; +} +#endif + + +#if defined(SO_DONTROUTE) +static +ERL_NIF_TERM ngetopt_lvl_sock_dontroute(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_DONTROUTE); +} +#endif + + +#if defined(SO_KEEPALIVE) +static +ERL_NIF_TERM ngetopt_lvl_sock_keepalive(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_KEEPALIVE); +} +#endif + + +#if defined(SO_LINGER) +static +ERL_NIF_TERM ngetopt_lvl_sock_linger(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + struct linger val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + sys_memzero((void *) &val, sizeof(val)); + + res = sock_getopt(descP->sock, SOL_SOCKET, SO_LINGER, + &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM lOnOff = ((val.l_onoff) ? atom_true : atom_false); + ERL_NIF_TERM lSecs = MKI(env, val.l_linger); + ERL_NIF_TERM linger = MKT2(env, lOnOff, lSecs); + + result = esock_make_ok2(env, linger); + } + + return result; +} +#endif + + +#if defined(SO_OOBINLINE) +static +ERL_NIF_TERM ngetopt_lvl_sock_oobinline(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_OOBINLINE); +} +#endif + + +#if defined(SO_PEEK_OFF) +static +ERL_NIF_TERM ngetopt_lvl_sock_peek_off(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_PEEK_OFF); +} +#endif + + +#if defined(SO_PRIORITY) +static +ERL_NIF_TERM ngetopt_lvl_sock_priority(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_PRIORITY); +} +#endif + + +#if defined(SO_PROTOCOL) +static +ERL_NIF_TERM ngetopt_lvl_sock_protocol(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + res = sock_getopt(descP->sock, SOL_SOCKET, SO_PROTOCOL, + &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + switch (val) { + case IPPROTO_IP: + result = esock_make_ok2(env, esock_atom_ip); + break; + + case IPPROTO_TCP: + result = esock_make_ok2(env, esock_atom_tcp); + break; + + case IPPROTO_UDP: + result = esock_make_ok2(env, esock_atom_udp); + break; + +#if defined(HAVE_SCTP) + case IPPROTO_SCTP: + result = esock_make_ok2(env, esock_atom_sctp); + break; +#endif + + default: + result = esock_make_error(env, + MKT2(env, esock_atom_unknown, MKI(env, val))); + break; + } + } + + return result; +} +#endif + + +#if defined(SO_RCVBUF) +static +ERL_NIF_TERM ngetopt_lvl_sock_rcvbuf(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVBUF); +} +#endif + + +#if defined(SO_RCVLOWAT) +static +ERL_NIF_TERM ngetopt_lvl_sock_rcvlowat(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_RCVLOWAT); +} +#endif + + +#if defined(SO_RCVTIMEO) +static +ERL_NIF_TERM ngetopt_lvl_sock_rcvtimeo(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_timeval_opt(env, descP, SOL_SOCKET, SO_RCVTIMEO); +} +#endif + + +#if defined(SO_REUSEADDR) +static +ERL_NIF_TERM ngetopt_lvl_sock_reuseaddr(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEADDR); +} +#endif + + +#if defined(SO_REUSEPORT) +static +ERL_NIF_TERM ngetopt_lvl_sock_reuseport(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_REUSEPORT); +} +#endif + + +#if defined(SO_SNDBUF) +static +ERL_NIF_TERM ngetopt_lvl_sock_sndbuf(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDBUF); +} +#endif + + +#if defined(SO_SNDLOWAT) +static +ERL_NIF_TERM ngetopt_lvl_sock_sndlowat(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, SOL_SOCKET, SO_SNDLOWAT); +} +#endif + + +#if defined(SO_SNDTIMEO) +static +ERL_NIF_TERM ngetopt_lvl_sock_sndtimeo(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_timeval_opt(env, descP, SOL_SOCKET, SO_SNDTIMEO); +} +#endif + + +#if defined(SO_TIMESTAMP) +static +ERL_NIF_TERM ngetopt_lvl_sock_timestamp(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_SOCKET, SO_TIMESTAMP); +} +#endif + + +#if defined(SO_TYPE) +static +ERL_NIF_TERM ngetopt_lvl_sock_type(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + res = sock_getopt(descP->sock, SOL_SOCKET, SO_TYPE, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + switch (val) { + case SOCK_STREAM: + result = esock_make_ok2(env, esock_atom_stream); + break; + case SOCK_DGRAM: + result = esock_make_ok2(env, esock_atom_dgram); + break; +#ifdef HAVE_SCTP + case SOCK_SEQPACKET: + result = esock_make_ok2(env, esock_atom_seqpacket); + break; +#endif + case SOCK_RAW: + result = esock_make_ok2(env, esock_atom_raw); + break; + case SOCK_RDM: + result = esock_make_ok2(env, esock_atom_rdm); + break; + default: + result = esock_make_error(env, + MKT2(env, esock_atom_unknown, MKI(env, val))); + break; + } + } + + return result; +} +#endif + + +/* ngetopt_lvl_ip - Level *IP* option(s) + */ +static +ERL_NIF_TERM ngetopt_lvl_ip(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_ip -> entry with" + "\r\n eOpt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(IP_FREEBIND) + case SOCKET_OPT_IP_FREEBIND: + result = ngetopt_lvl_ip_freebind(env, descP); + break; +#endif + +#if defined(IP_HDRINCL) + case SOCKET_OPT_IP_HDRINCL: + result = ngetopt_lvl_ip_hdrincl(env, descP); + break; +#endif + +#if defined(IP_MINTTL) + case SOCKET_OPT_IP_MINTTL: + result = ngetopt_lvl_ip_minttl(env, descP); + break; +#endif + +#if defined(IP_MTU) + case SOCKET_OPT_IP_MTU: + result = ngetopt_lvl_ip_mtu(env, descP); + break; +#endif + +#if defined(IP_MTU_DISCOVER) + case SOCKET_OPT_IP_MTU_DISCOVER: + result = ngetopt_lvl_ip_mtu_discover(env, descP); + break; +#endif + +#if defined(IP_MULTICAST_ALL) + case SOCKET_OPT_IP_MULTICAST_ALL: + result = ngetopt_lvl_ip_multicast_all(env, descP); + break; +#endif + +#if defined(IP_MULTICAST_IF) + case SOCKET_OPT_IP_MULTICAST_IF: + result = ngetopt_lvl_ip_multicast_if(env, descP); + break; +#endif + +#if defined(IP_MULTICAST_LOOP) + case SOCKET_OPT_IP_MULTICAST_LOOP: + result = ngetopt_lvl_ip_multicast_loop(env, descP); + break; +#endif + +#if defined(IP_MULTICAST_TTL) + case SOCKET_OPT_IP_MULTICAST_TTL: + result = ngetopt_lvl_ip_multicast_ttl(env, descP); + break; +#endif + +#if defined(IP_NODEFRAG) + case SOCKET_OPT_IP_NODEFRAG: + result = ngetopt_lvl_ip_nodefrag(env, descP); + break; +#endif + +#if defined(IP_PKTINFO) + case SOCKET_OPT_IP_PKTINFO: + result = ngetopt_lvl_ip_pktinfo(env, descP); + break; +#endif + +#if defined(IP_RECVDSTADDR) + case SOCKET_OPT_IP_RECVDSTADDR: + result = ngetopt_lvl_ip_recvdstaddr(env, descP); + break; +#endif + +#if defined(IP_RECVERR) + case SOCKET_OPT_IP_RECVERR: + result = ngetopt_lvl_ip_recverr(env, descP); + break; +#endif + +#if defined(IP_RECVIF) + case SOCKET_OPT_IP_RECVIF: + result = ngetopt_lvl_ip_recvif(env, descP); + break; +#endif + +#if defined(IP_RECVOPTS) + case SOCKET_OPT_IP_RECVOPTS: + result = ngetopt_lvl_ip_recvopts(env, descP); + break; +#endif + +#if defined(IP_RECVORIGDSTADDR) + case SOCKET_OPT_IP_RECVORIGDSTADDR: + result = ngetopt_lvl_ip_recvorigdstaddr(env, descP); + break; +#endif + +#if defined(IP_RECVTOS) + case SOCKET_OPT_IP_RECVTOS: + result = ngetopt_lvl_ip_recvtos(env, descP); + break; +#endif + +#if defined(IP_RECVTTL) + case SOCKET_OPT_IP_RECVTTL: + result = ngetopt_lvl_ip_recvttl(env, descP); + break; +#endif + +#if defined(IP_RETOPTS) + case SOCKET_OPT_IP_RETOPTS: + result = ngetopt_lvl_ip_retopts(env, descP); + break; +#endif + +#if defined(IP_ROUTER_ALERT) + case SOCKET_OPT_IP_ROUTER_ALERT: + result = ngetopt_lvl_ip_router_alert(env, descP); + break; +#endif + +#if defined(IP_SENDSRCADDR) + case SOCKET_OPT_IP_SENDSRCADDR: + result = ngetopt_lvl_ip_sendsrcaddr(env, descP); + break; +#endif + +#if defined(IP_TOS) + case SOCKET_OPT_IP_TOS: + result = ngetopt_lvl_ip_tos(env, descP); + break; +#endif + +#if defined(IP_TRANSPARENT) + case SOCKET_OPT_IP_TRANSPARENT: + result = ngetopt_lvl_ip_transparent(env, descP); + break; +#endif + +#if defined(IP_TTL) + case SOCKET_OPT_IP_TTL: + result = ngetopt_lvl_ip_ttl(env, descP); + break; +#endif + + default: + SSDBG( descP, ("SOCKET", "ngetopt_lvl_ip -> unknown opt %d\r\n", eOpt) ); + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_ip -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +/* ngetopt_lvl_ip_minttl - Level IP MINTTL option + */ +#if defined(IP_MINTTL) +static +ERL_NIF_TERM ngetopt_lvl_ip_minttl(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_int_opt(env, descP, level, IP_MINTTL); +} +#endif + + +/* ngetopt_lvl_ip_freebind - Level IP FREEBIND option + */ +#if defined(IP_FREEBIND) +static +ERL_NIF_TERM ngetopt_lvl_ip_freebind(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_FREEBIND); +} +#endif + + +/* ngetopt_lvl_ip_hdrincl - Level IP HDRINCL option + */ +#if defined(IP_HDRINCL) +static +ERL_NIF_TERM ngetopt_lvl_ip_hdrincl(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_HDRINCL); +} +#endif + + +/* ngetopt_lvl_ip_mtu - Level IP MTU option + */ +#if defined(IP_MTU) +static +ERL_NIF_TERM ngetopt_lvl_ip_mtu(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_int_opt(env, descP, level, IP_MTU); +} +#endif + + +/* ngetopt_lvl_ip_mtu_discover - Level IP MTU_DISCOVER option + */ +#if defined(IP_MTU_DISCOVER) +static +ERL_NIF_TERM ngetopt_lvl_ip_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eMtuDisc; + int mtuDisc; + SOCKOPTLEN_T mtuDiscSz = sizeof(mtuDisc); + int res; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + res = sock_getopt(descP->sock, level, IP_MTU_DISCOVER, + &mtuDisc, &mtuDiscSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + encode_ip_pmtudisc(env, mtuDisc, &eMtuDisc); + result = esock_make_ok2(env, eMtuDisc); + } + + return result; + +} +#endif + + +/* ngetopt_lvl_ip_multicast_all - Level IP MULTICAST_ALL option + */ +#if defined(IP_MULTICAST_ALL) +static +ERL_NIF_TERM ngetopt_lvl_ip_multicast_all(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_MULTICAST_ALL); +} +#endif + + +/* ngetopt_lvl_ip_multicast_if - Level IP MULTICAST_IF option + */ +#if defined(IP_MULTICAST_IF) +static +ERL_NIF_TERM ngetopt_lvl_ip_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eAddr; + struct in_addr ifAddr; + SOCKOPTLEN_T ifAddrSz = sizeof(ifAddr); + char* xres; + int res; +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + res = sock_getopt(descP->sock, level, IP_MULTICAST_IF, &ifAddr, &ifAddrSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + if ((xres = esock_encode_ip4_address(env, &ifAddr, &eAddr)) != NULL) { + result = esock_make_error_str(env, xres); + } else { + result = esock_make_ok2(env, eAddr); + } + } + + return result; + +} +#endif + + +/* ngetopt_lvl_ip_multicast_loop - Level IP MULTICAST_LOOP option + */ +#if defined(IP_MULTICAST_LOOP) +static +ERL_NIF_TERM ngetopt_lvl_ip_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_MULTICAST_LOOP); +} +#endif + + +/* ngetopt_lvl_ip_multicast_ttl - Level IP MULTICAST_TTL option + */ +#if defined(IP_MULTICAST_TTL) +static +ERL_NIF_TERM ngetopt_lvl_ip_multicast_ttl(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_int_opt(env, descP, level, IP_MULTICAST_TTL); +} +#endif + + +/* ngetopt_lvl_ip_nodefrag - Level IP NODEFRAG option + */ +#if defined(IP_NODEFRAG) +static +ERL_NIF_TERM ngetopt_lvl_ip_nodefrag(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_NODEFRAG); +} +#endif + + +/* ngetopt_lvl_ip_pktinfo - Level IP PKTINFO option + */ +#if defined(IP_PKTINFO) +static +ERL_NIF_TERM ngetopt_lvl_ip_pktinfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_PKTINFO); +} +#endif + + +/* ngetopt_lvl_ip_recvtos - Level IP RECVTOS option + */ +#if defined(IP_RECVTOS) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvtos(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVTOS); +} +#endif + + +/* ngetopt_lvl_ip_recvdstaddr - Level IP RECVDSTADDR option + */ +#if defined(IP_RECVDSTADDR) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvdstaddr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVDSTADDR); +} +#endif + + +/* ngetopt_lvl_ip_recverr - Level IP RECVERR option + */ +#if defined(IP_RECVERR) +static +ERL_NIF_TERM ngetopt_lvl_ip_recverr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVERR); +} +#endif + + +/* ngetopt_lvl_ip_recvif - Level IP RECVIF option + */ +#if defined(IP_RECVIF) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvif(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVIF); +} +#endif + + +/* ngetopt_lvl_ip_recvopt - Level IP RECVOPTS option + */ +#if defined(IP_RECVOPTS) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvopts(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVOPTS); +} +#endif + + +/* ngetopt_lvl_ip_recvorigdstaddr - Level IP RECVORIGDSTADDR option + */ +#if defined(IP_RECVORIGDSTADDR) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvorigdstaddr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVORIGDSTADDR); +} +#endif + + +/* ngetopt_lvl_ip_recvttl - Level IP RECVTTL option + */ +#if defined(IP_RECVTTL) +static +ERL_NIF_TERM ngetopt_lvl_ip_recvttl(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RECVTTL); +} +#endif + + +/* ngetopt_lvl_ip_retopts - Level IP RETOPTS option + */ +#if defined(IP_RETOPTS) +static +ERL_NIF_TERM ngetopt_lvl_ip_retopts(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_RETOPTS); +} +#endif + + +/* ngetopt_lvl_ip_router_alert - Level IP ROUTER_ALERT option + */ +#if defined(IP_ROUTER_ALERT) +static +ERL_NIF_TERM ngetopt_lvl_ip_router_alert(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_int_opt(env, descP, level, IP_ROUTER_ALERT); +} +#endif + + +/* ngetopt_lvl_ip_sendsrcaddr - Level IP SENDSRCADDR option + */ +#if defined(IP_SENDSRCADDR) +static +ERL_NIF_TERM ngetopt_lvl_ip_sendsrcaddr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_SENDSRCADDR); +} +#endif + + +/* ngetopt_lvl_ip_tos - Level IP TOS option + */ +#if defined(IP_TOS) +static +ERL_NIF_TERM ngetopt_lvl_ip_tos(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + res = sock_getopt(descP->sock, level, IP_TOS, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + result = encode_ip_tos(env, val); + } + + return result; +} +#endif + + +/* ngetopt_lvl_ip_transparent - Level IP TRANSPARENT option + */ +#if defined(IP_TRANSPARENT) +static +ERL_NIF_TERM ngetopt_lvl_ip_transparent(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_bool_opt(env, descP, level, IP_TRANSPARENT); +} +#endif + + + +/* ngetopt_lvl_ip_ttl - Level IP TTL option + */ +#if defined(IP_TTL) +static +ERL_NIF_TERM ngetopt_lvl_ip_ttl(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IP) + int level = SOL_IP; +#else + int level = IPPROTO_IP; +#endif + + return ngetopt_int_opt(env, descP, level, IP_TTL); +} +#endif + + + +/* ngetopt_lvl_ipv6 - Level *IPv6* option(s) + */ +#if defined(HAVE_IPV6) +static +ERL_NIF_TERM ngetopt_lvl_ipv6(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_ipv6 -> entry with" + "\r\n eOpt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(IPV6_AUTHHDR) + case SOCKET_OPT_IPV6_AUTHHDR: + result = ngetopt_lvl_ipv6_authhdr(env, descP); + break; +#endif + +#if defined(IPV6_DSTOPTS) + case SOCKET_OPT_IPV6_DSTOPTS: + result = ngetopt_lvl_ipv6_dstopts(env, descP); + break; +#endif + +#if defined(IPV6_FLOWINFO) + case SOCKET_OPT_IPV6_FLOWINFO: + result = ngetopt_lvl_ipv6_flowinfo(env, descP); + break; +#endif + +#if defined(IPV6_HOPLIMIT) + case SOCKET_OPT_IPV6_HOPLIMIT: + result = ngetopt_lvl_ipv6_hoplimit(env, descP); + break; +#endif + +#if defined(IPV6_HOPOPTS) + case SOCKET_OPT_IPV6_HOPOPTS: + result = ngetopt_lvl_ipv6_hopopts(env, descP); + break; +#endif + +#if defined(IPV6_MTU) + case SOCKET_OPT_IPV6_MTU: + result = ngetopt_lvl_ipv6_mtu(env, descP); + break; +#endif + +#if defined(IPV6_MTU_DISCOVER) + case SOCKET_OPT_IPV6_MTU_DISCOVER: + result = ngetopt_lvl_ipv6_mtu_discover(env, descP); + break; +#endif + +#if defined(IPV6_MULTICAST_HOPS) + case SOCKET_OPT_IPV6_MULTICAST_HOPS: + result = ngetopt_lvl_ipv6_multicast_hops(env, descP); + break; +#endif + +#if defined(IPV6_MULTICAST_IF) + case SOCKET_OPT_IPV6_MULTICAST_IF: + result = ngetopt_lvl_ipv6_multicast_if(env, descP); + break; +#endif + +#if defined(IPV6_MULTICAST_LOOP) + case SOCKET_OPT_IPV6_MULTICAST_LOOP: + result = ngetopt_lvl_ipv6_multicast_loop(env, descP); + break; +#endif + +#if defined(IPV6_RECVERR) + case SOCKET_OPT_IPV6_RECVERR: + result = ngetopt_lvl_ipv6_recverr(env, descP); + break; +#endif + +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) + case SOCKET_OPT_IPV6_RECVPKTINFO: + result = ngetopt_lvl_ipv6_recvpktinfo(env, descP); + break; +#endif + +#if defined(IPV6_ROUTER_ALERT) + case SOCKET_OPT_IPV6_ROUTER_ALERT: + result = ngetopt_lvl_ipv6_router_alert(env, descP); + break; +#endif + +#if defined(IPV6_RTHDR) + case SOCKET_OPT_IPV6_RTHDR: + result = ngetopt_lvl_ipv6_rthdr(env, descP); + break; +#endif + +#if defined(IPV6_UNICAST_HOPS) + case SOCKET_OPT_IPV6_UNICAST_HOPS: + result = ngetopt_lvl_ipv6_unicast_hops(env, descP); + break; +#endif + +#if defined(IPV6_V6ONLY) + case SOCKET_OPT_IPV6_V6ONLY: + result = ngetopt_lvl_ipv6_v6only(env, descP); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_ipv6 -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +#if defined(IPV6_AUTHHDR) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_authhdr(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, SOL_IPV6, IPV6_AUTHHDR); +} +#endif + + +#if defined(IPV6_DSTOPTS) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_dstopts(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + return ngetopt_bool_opt(env, descP, level, IPV6_DSTOPTS); +} +#endif + + +#if defined(IPV6_FLOWINFO) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_flowinfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_FLOWINFO); +} +#endif + + +#if defined(IPV6_HOPLIMIT) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_hoplimit(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_HOPLIMIT); +} +#endif + + +#if defined(IPV6_HOPOPTS) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_hopopts(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_HOPOPTS); +} +#endif + + +#if defined(IPV6_MTU) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_mtu(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_int_opt(env, descP, level, IPV6_MTU); +} +#endif + + +/* ngetopt_lvl_ipv6_mtu_discover - Level IPv6 MTU_DISCOVER option + */ +#if defined(IPV6_MTU_DISCOVER) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_mtu_discover(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eMtuDisc; + int mtuDisc; + SOCKOPTLEN_T mtuDiscSz = sizeof(mtuDisc); + int res; +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + res = sock_getopt(descP->sock, level, IPV6_MTU_DISCOVER, + &mtuDisc, &mtuDiscSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + encode_ipv6_pmtudisc(env, mtuDisc, &eMtuDisc); + result = esock_make_ok2(env, eMtuDisc); + } + + return result; + +} +#endif + + +#if defined(IPV6_MULTICAST_HOPS) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_hops(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_int_opt(env, descP, level, IPV6_MULTICAST_HOPS); +} +#endif + + +#if defined(IPV6_MULTICAST_IF) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_if(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_int_opt(env, descP, level, IPV6_MULTICAST_IF); +} +#endif + + +#if defined(IPV6_MULTICAST_LOOP) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_multicast_loop(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_MULTICAST_LOOP); +} +#endif + + +#if defined(IPV6_RECVERR) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_recverr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_RECVERR); +} +#endif + + +#if defined(IPV6_RECVPKTINFO) || defined(IPV6_PKTINFO) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_recvpktinfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif +#if defined(IPV6_RECVPKTINFO) + int opt = IPV6_RECVPKTINFO; +#else + int opt = IPV6_PKTINFO; +#endif + + return ngetopt_bool_opt(env, descP, level, opt); +} +#endif + + +#if defined(IPV6_ROUTER_ALERT) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_router_alert(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_int_opt(env, descP, level, IPV6_ROUTER_ALERT); +} +#endif + + +#if defined(IPV6_RTHDR) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_rthdr(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_RTHDR); +} +#endif + + +#if defined(IPV6_UNICAST_HOPS) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_unicast_hops(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_int_opt(env, descP, level, IPV6_UNICAST_HOPS); +} +#endif + + +#if defined(IPV6_V6ONLY) +static +ERL_NIF_TERM ngetopt_lvl_ipv6_v6only(ErlNifEnv* env, + SocketDescriptor* descP) +{ +#if defined(SOL_IPV6) + int level = SOL_IPV6; +#else + int level = IPPROTO_IPV6; +#endif + + return ngetopt_bool_opt(env, descP, level, IPV6_V6ONLY); +} +#endif + + +#endif // defined(HAVE_IPV6) + + + +/* ngetopt_lvl_tcp - Level *TCP* option(s) + */ +static +ERL_NIF_TERM ngetopt_lvl_tcp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + switch (eOpt) { +#if defined(TCP_CONGESTION) + case SOCKET_OPT_TCP_CONGESTION: + result = ngetopt_lvl_tcp_congestion(env, descP); + break; +#endif + +#if defined(TCP_MAXSEG) + case SOCKET_OPT_TCP_MAXSEG: + result = ngetopt_lvl_tcp_maxseg(env, descP); + break; +#endif + +#if defined(TCP_NODELAY) + case SOCKET_OPT_TCP_NODELAY: + result = ngetopt_lvl_tcp_nodelay(env, descP); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* ngetopt_lvl_tcp_congestion - Level TCP CONGESTION option + */ +#if defined(TCP_CONGESTION) +static +ERL_NIF_TERM ngetopt_lvl_tcp_congestion(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int max = SOCKET_OPT_TCP_CONGESTION_NAME_MAX+1; + + return ngetopt_str_opt(env, descP, IPPROTO_TCP, TCP_CONGESTION, max); +} +#endif + + +/* ngetopt_lvl_tcp_maxseg - Level TCP MAXSEG option + */ +#if defined(TCP_MAXSEG) +static +ERL_NIF_TERM ngetopt_lvl_tcp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, IPPROTO_TCP, TCP_MAXSEG); +} +#endif + + +/* ngetopt_lvl_tcp_nodelay - Level TCP NODELAY option + */ +#if defined(TCP_NODELAY) +static +ERL_NIF_TERM ngetopt_lvl_tcp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, IPPROTO_TCP, TCP_NODELAY); +} +#endif + + + +/* ngetopt_lvl_udp - Level *UDP* option(s) + */ +static +ERL_NIF_TERM ngetopt_lvl_udp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + switch (eOpt) { +#if defined(UDP_CORK) + case SOCKET_OPT_UDP_CORK: + result = ngetopt_lvl_udp_cork(env, descP); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + return result; +} + + +/* ngetopt_lvl_udp_cork - Level UDP CORK option + */ +#if defined(UDP_CORK) +static +ERL_NIF_TERM ngetopt_lvl_udp_cork(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, IPPROTO_UDP, UDP_CORK); +} +#endif + + + +/* ngetopt_lvl_sctp - Level *SCTP* option(s) + */ +#if defined(HAVE_SCTP) +static +ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env, + SocketDescriptor* descP, + int eOpt) +{ + ERL_NIF_TERM result; + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + + switch (eOpt) { +#if defined(SCTP_ASSOCINFO) + case SOCKET_OPT_SCTP_ASSOCINFO: + result = ngetopt_lvl_sctp_associnfo(env, descP); + break; +#endif + +#if defined(SCTP_AUTOCLOSE) + case SOCKET_OPT_SCTP_AUTOCLOSE: + result = ngetopt_lvl_sctp_autoclose(env, descP); + break; +#endif + +#if defined(SCTP_DISABLE_FRAGMENTS) + case SOCKET_OPT_SCTP_DISABLE_FRAGMENTS: + result = ngetopt_lvl_sctp_disable_fragments(env, descP); + break; +#endif + +#if defined(SCTP_INITMSG) + case SOCKET_OPT_SCTP_INITMSG: + result = ngetopt_lvl_sctp_initmsg(env, descP); + break; +#endif + +#if defined(SCTP_MAXSEG) + case SOCKET_OPT_SCTP_MAXSEG: + result = ngetopt_lvl_sctp_maxseg(env, descP); + break; +#endif + +#if defined(SCTP_NODELAY) + case SOCKET_OPT_SCTP_NODELAY: + result = ngetopt_lvl_sctp_nodelay(env, descP); + break; +#endif + +#if defined(SCTP_RTOINFO) + case SOCKET_OPT_SCTP_RTOINFO: + result = ngetopt_lvl_sctp_rtoinfo(env, descP); + break; +#endif + + default: + result = esock_make_error(env, esock_atom_einval); + break; + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + +/* ngetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option + * + * <KOLLA> + * + * We should really specify which association this relates to, + * as it is now we get assoc-id = 0. If this socket is an + * association (and not an endpoint) then it will have an + * assoc id. But since the sctp support at present is "limited", + * we leave it for now. + * What do we do if this is an endpoint? Invalid op? + * + * </KOLLA> + */ +#if defined(SCTP_ASSOCINFO) +static +ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + struct sctp_assocparams val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_associnfo -> entry\r\n") ); + + sys_memzero((char*) &val, valSz); + res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM eAssocParams; + ERL_NIF_TERM keys[] = {atom_assoc_id, atom_max_rxt, atom_num_peer_dests, + atom_peer_rwnd, atom_local_rwnd, atom_cookie_life}; + ERL_NIF_TERM vals[] = {MKUI(env, val.sasoc_assoc_id), + MKUI(env, val.sasoc_asocmaxrxt), + MKUI(env, val.sasoc_number_peer_destinations), + MKUI(env, val.sasoc_peer_rwnd), + MKUI(env, val.sasoc_local_rwnd), + MKUI(env, val.sasoc_cookie_life)}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &eAssocParams)) + return esock_make_error(env, esock_atom_einval);; + + result = esock_make_ok2(env, eAssocParams); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp_associnfo -> done with" + "\r\n res: %d" + "\r\n result: %T" + "\r\n", res, result) ); + + return result; +} +#endif + + +/* ngetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option + */ +#if defined(SCTP_AUTOCLOSE) +static +ERL_NIF_TERM ngetopt_lvl_sctp_autoclose(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_AUTOCLOSE); +} +#endif + + +/* ngetopt_lvl_sctp_disable_fragments - Level SCTP DISABLE:FRAGMENTS option + */ +#if defined(SCTP_DISABLE_FRAGMENTS) +static +ERL_NIF_TERM ngetopt_lvl_sctp_disable_fragments(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_DISABLE_FRAGMENTS); +} +#endif + + +/* ngetopt_lvl_sctp_initmsg - Level SCTP INITMSG option + * + */ +#if defined(SCTP_INITMSG) +static +ERL_NIF_TERM ngetopt_lvl_sctp_initmsg(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + struct sctp_initmsg val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_initmsg -> entry\r\n") ); + + sys_memzero((char*) &val, valSz); + res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_INITMSG, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM eInitMsg; + ERL_NIF_TERM keys[] = {atom_num_outstreams, atom_max_instreams, + atom_max_attempts, atom_max_init_timeo}; + ERL_NIF_TERM vals[] = {MKUI(env, val.sinit_num_ostreams), + MKUI(env, val.sinit_max_instreams), + MKUI(env, val.sinit_max_attempts), + MKUI(env, val.sinit_max_init_timeo)}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &eInitMsg)) + return esock_make_error(env, esock_atom_einval);; + + result = esock_make_ok2(env, eInitMsg); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp_initmsg -> done with" + "\r\n res: %d" + "\r\n result: %T" + "\r\n", res, result) ); + + return result; +} +#endif + + +/* ngetopt_lvl_sctp_maxseg - Level SCTP MAXSEG option + */ +#if defined(SCTP_MAXSEG) +static +ERL_NIF_TERM ngetopt_lvl_sctp_maxseg(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_int_opt(env, descP, IPPROTO_SCTP, SCTP_MAXSEG); +} +#endif + + +/* ngetopt_lvl_sctp_nodelay - Level SCTP NODELAY option + */ +#if defined(SCTP_NODELAY) +static +ERL_NIF_TERM ngetopt_lvl_sctp_nodelay(ErlNifEnv* env, + SocketDescriptor* descP) +{ + return ngetopt_bool_opt(env, descP, IPPROTO_SCTP, SCTP_NODELAY); +} +#endif + + +/* ngetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option + * + * <KOLLA> + * + * We should really specify which association this relates to, + * as it is now we get assoc-id = 0. If this socket is an + * association (and not an endpoint) then it will have an + * assoc id (we can assume). But since the sctp support at + * present is "limited", we leave it for now. + * What do we do if this is an endpoint? Invalid op? + * + * </KOLLA> + */ +#if defined(SCTP_RTOINFO) +static +ERL_NIF_TERM ngetopt_lvl_sctp_rtoinfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + struct sctp_rtoinfo val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_rtoinfo -> entry\r\n") ); + + sys_memzero((char*) &val, valSz); + res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_RTOINFO, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM eRTOInfo; + ERL_NIF_TERM keys[] = {atom_assoc_id, atom_initial, atom_max, atom_min}; + ERL_NIF_TERM vals[] = {MKUI(env, val.srto_assoc_id), + MKUI(env, val.srto_initial), + MKUI(env, val.srto_max), + MKUI(env, val.srto_min)}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &eRTOInfo)) + return esock_make_error(env, esock_atom_einval);; + + result = esock_make_ok2(env, eRTOInfo); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp_rtoinfo -> done with" + "\r\n res: %d" + "\r\n result: %T" + "\r\n", res, result) ); + + return result; +} +#endif + + + +#endif // defined(HAVE_SCTP) + + + +/* ngetopt_bool_opt - get an (integer) bool option + */ +static +ERL_NIF_TERM ngetopt_bool_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt) +{ + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + /* + SSDBG( descP, ("SOCKET", "ngetopt_bool_opt -> entry with" + "\r\n: level: %d" + "\r\n: opt: %d" + "\r\n", level, opt) ); + */ + + res = sock_getopt(descP->sock, level, opt, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM bval = ((val) ? atom_true : atom_false); + + result = esock_make_ok2(env, bval); + } + + /* + SSDBG( descP, ("SOCKET", "ngetopt_bool_opt -> done when" + "\r\n: res: %d" + "\r\n: result: %T" + "\r\n", res, result) ); + */ + + return result; +} + + +/* ngetopt_int_opt - get an integer option + */ +static +ERL_NIF_TERM ngetopt_int_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt) +{ + ERL_NIF_TERM result; + int val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + res = sock_getopt(descP->sock, level, opt, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + result = esock_make_ok2(env, MKI(env, val)); + } + + return result; +} + + + +/* ngetopt_timeval_opt - get an timeval option + */ +static +ERL_NIF_TERM ngetopt_timeval_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt) +{ + ERL_NIF_TERM result; + struct timeval val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + SSDBG( descP, + ("SOCKET", "ngetopt_timeval_opt -> entry with" + "\r\n level: %d" + "\r\n opt: %d" + "\r\n", level, opt) ); + + sys_memzero((char*) &val, valSz); + res = sock_getopt(descP->sock, level, opt, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM eTimeVal; + char* xres; + + if ((xres = esock_encode_timeval(env, &val, &eTimeVal)) != NULL) + result = esock_make_error_str(env, xres); + else + result = esock_make_ok2(env, eTimeVal); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_timeval_opt -> done when" + "\r\n result: %T" + "\r\n", result) ); + + return result; +} + + + +/* ngetopt_str_opt - get an string option + * + * We provide the max size of the string. This is the + * size of the buffer we allocate for the value. + * The actual size of the (read) value will be communicated + * in the optSz variable. + */ +static +ERL_NIF_TERM ngetopt_str_opt(ErlNifEnv* env, + SocketDescriptor* descP, + int level, + int opt, + int max) +{ + ERL_NIF_TERM result; + char* val = MALLOC(max); + SOCKOPTLEN_T valSz = max; + int res; + + SSDBG( descP, + ("SOCKET", "ngetopt_str_opt -> entry with" + "\r\n level: %d" + "\r\n opt: %d" + "\r\n max: %d" + "\r\n", level, opt, max) ); + + res = sock_getopt(descP->sock, level, opt, val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM sval = MKSL(env, val, valSz); + + result = esock_make_ok2(env, sval); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_str_opt -> done when" + "\r\n result: %T" + "\r\n", result) ); + + FREE(val); + + return result; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_sockname - get socket name + * + * Description: + * Returns the current address to which the socket is bound. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + */ + +static +ERL_NIF_TERM nif_sockname(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_sockname -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 1) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + SSDBG( descP, + ("SOCKET", "nif_sockname -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n", descP->sock, argv[0]) ); + + res = nsockname(env, descP); + + SSDBG( descP, ("SOCKET", "nif_sockname -> done with res = %T\r\n", res) ); + + return res; +#endif // if defined(__WIN32__) +} + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM nsockname(ErlNifEnv* env, + SocketDescriptor* descP) +{ + SocketAddress sa; + SocketAddress* saP = &sa; + unsigned int sz = sizeof(SocketAddress); + + sys_memzero((char*) saP, sz); + if (IS_SOCKET_ERROR(sock_name(descP->sock, (struct sockaddr*) saP, &sz))) { + return esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM esa; + char* xres; + + if ((xres = esock_encode_sockaddr(env, saP, sz, &esa)) != NULL) + return esock_make_error_str(env, xres); + else + return esock_make_ok2(env, esa); + } +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_peername - get name of the connected peer socket + * + * Description: + * Returns the address of the peer connected to the socket. + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + */ + +static +ERL_NIF_TERM nif_peername(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM res; + + SGDBG( ("SOCKET", "nif_peername -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 1) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + SSDBG( descP, + ("SOCKET", "nif_peername -> args when sock = %d:" + "\r\n Socket: %T" + "\r\n", descP->sock, argv[0]) ); + + res = npeername(env, descP); + + SSDBG( descP, ("SOCKET", "nif_peername -> done with res = %T\r\n", res) ); + + return res; +#endif // if defined(__WIN32__) +} + + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM npeername(ErlNifEnv* env, + SocketDescriptor* descP) +{ + SocketAddress sa; + SocketAddress* saP = &sa; + unsigned int sz = sizeof(SocketAddress); + + sys_memzero((char*) saP, sz); + if (IS_SOCKET_ERROR(sock_peer(descP->sock, (struct sockaddr*) saP, &sz))) { + return esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM esa; + char* xres; + + if ((xres = esock_encode_sockaddr(env, saP, sz, &esa)) != NULL) + return esock_make_error_str(env, xres); + else + return esock_make_ok2(env, esa); + } +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * nif_cancel + * + * Description: + * Cancel a previous select! + * + * Arguments: + * Socket (ref) - Points to the socket descriptor. + * Operation (atom) - What kind of operation (accept, send, ...) is to be cancelled + * Ref (ref) - Unique id for the operation + */ +static +ERL_NIF_TERM nif_cancel(ErlNifEnv* env, + int argc, + const ERL_NIF_TERM argv[]) +{ +#if defined(__WIN32__) + return enif_raise_exception(env, MKA(env, "notsup")); +#else + SocketDescriptor* descP; + ERL_NIF_TERM op, opRef, result; + + SGDBG( ("SOCKET", "nif_cancel -> entry with argc: %d\r\n", argc) ); + + /* Extract arguments and perform preliminary validation */ + + if ((argc != 3) || + !enif_get_resource(env, argv[0], sockets, (void**) &descP)) { + return enif_make_badarg(env); + } + op = argv[1]; + opRef = argv[2]; + + if (IS_CLOSED(descP) || IS_CLOSING(descP)) + return esock_make_error(env, atom_closed); + + SSDBG( descP, + ("SOCKET", "nif_cancel -> args when sock = %d:" + "\r\n op: %T" + "\r\n opRef: %T" + "\r\n", descP->sock, op, opRef) ); + + result = ncancel(env, descP, op, opRef); + + SSDBG( descP, + ("SOCKET", "nif_cancel -> done with result: " + "\r\n %T" + "\r\n", result) ); + + return result; +#endif // if !defined(__WIN32__) +} + + +#if !defined(__WIN32__) +static +ERL_NIF_TERM ncancel(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM op, + ERL_NIF_TERM opRef) +{ + /* <KOLLA> + * + * Do we really need all these variants? Should it not be enough with: + * + * connect | accept | send | recv + * + * </KOLLA> + */ + if (COMPARE(op, esock_atom_connect) == 0) { + return ncancel_connect(env, descP, opRef); + } else if (COMPARE(op, esock_atom_accept) == 0) { + return ncancel_accept(env, descP, opRef); + } else if (COMPARE(op, esock_atom_send) == 0) { + return ncancel_send(env, descP, opRef); + } else if (COMPARE(op, esock_atom_sendto) == 0) { + return ncancel_send(env, descP, opRef); + } else if (COMPARE(op, esock_atom_sendmsg) == 0) { + return ncancel_send(env, descP, opRef); + } else if (COMPARE(op, esock_atom_recv) == 0) { + return ncancel_recv(env, descP, opRef); + } else if (COMPARE(op, esock_atom_recvfrom) == 0) { + return ncancel_recv(env, descP, opRef); + } else if (COMPARE(op, esock_atom_recvmsg) == 0) { + return ncancel_recv(env, descP, opRef); + } else { + return esock_make_error(env, esock_atom_einval); + } +} + + + +/* *** ncancel_connect *** + * + * + */ +static +ERL_NIF_TERM ncancel_connect(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + return ncancel_write_select(env, descP, opRef); +} + + +/* *** ncancel_accept *** + * + * We have two different cases: + * *) Its the current acceptor + * Cancel the select! + * We need to activate one of the waiting acceptors. + * *) Its one of the acceptors ("waiting") in the queue + * Simply remove the acceptor from the queue. + * + */ +static +ERL_NIF_TERM ncancel_accept(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ERL_NIF_TERM res; + + SSDBG( descP, + ("SOCKET", "ncancel_accept -> entry with" + "\r\n opRef: %T" + "\r\n %s" + "\r\n", opRef, + ((descP->currentAcceptorP == NULL) ? "without acceptor" : "with acceptor")) ); + + MLOCK(descP->accMtx); + + if (descP->currentAcceptorP != NULL) { + if (COMPARE(opRef, descP->currentAcceptor.ref) == 0) { + res = ncancel_accept_current(env, descP); + } else { + res = ncancel_accept_waiting(env, descP, opRef); + } + } else { + /* Or badarg? */ + res = esock_make_error(env, esock_atom_einval); + } + + MUNLOCK(descP->accMtx); + + SSDBG( descP, + ("SOCKET", "ncancel_accept -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + +/* The current acceptor process has an ongoing select we first must + * cancel. Then we must re-activate the "first" (the first + * in the acceptor queue). + */ +static +ERL_NIF_TERM ncancel_accept_current(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int sres; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "ncancel_accept_current -> entry\r\n") ); + + DEMONP("ncancel_accept_current -> current acceptor", + env, descP, &descP->currentAcceptor.mon); + res = ncancel_read_select(env, descP, descP->currentAcceptor.ref); + + SSDBG( descP, ("SOCKET", "ncancel_accept_current -> cancel res: %T\r\n", res) ); + + if (acceptor_pop(env, descP, + &descP->currentAcceptor.pid, + &descP->currentAcceptor.mon, + &descP->currentAcceptor.ref)) { + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "ncancel_accept_current -> new (active) acceptor: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentAcceptor.pid, + descP->currentAcceptor.ref) ); + + if ((sres = esock_select_read(env, descP->sock, descP, + &descP->currentAcceptor.pid, + descP->currentAcceptor.ref)) < 0) { + return esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } + } else { + SSDBG( descP, ("SOCKET", "ncancel_accept_current -> no more acceptors\r\n") ); + descP->currentAcceptorP = NULL; + descP->state = SOCKET_STATE_LISTENING; + } + + SSDBG( descP, ("SOCKET", "ncancel_accept_current -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + +/* These processes have not performed a select, so we can simply + * remove them from the acceptor queue. + */ +static +ERL_NIF_TERM ncancel_accept_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + /* unqueue request from (acceptor) queue */ + + if (acceptor_unqueue(env, descP, &caller)) { + return esock_atom_ok; + } else { + /* Race? */ + return esock_make_error(env, esock_atom_not_found); + } +} + + + +/* *** ncancel_send *** + * + * Cancel a send operation. + * Its either the current writer or one of the waiting writers. + */ +static +ERL_NIF_TERM ncancel_send(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ERL_NIF_TERM res; + + MLOCK(descP->writeMtx); + + SSDBG( descP, + ("SOCKET", "ncancel_send -> entry with" + "\r\n opRef: %T" + "\r\n %s" + "\r\n", opRef, + ((descP->currentWriterP == NULL) ? "without writer" : "with writer")) ); + + if (descP->currentWriterP != NULL) { + if (COMPARE(opRef, descP->currentWriter.ref) == 0) { + res = ncancel_send_current(env, descP); + } else { + res = ncancel_send_waiting(env, descP, opRef); + } + } else { + /* Or badarg? */ + res = esock_make_error(env, esock_atom_einval); + } + + MUNLOCK(descP->writeMtx); + + SSDBG( descP, + ("SOCKET", "ncancel_send -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + + +/* The current writer process has an ongoing select we first must + * cancel. Then we must re-activate the "first" (the first + * in the writer queue). + */ +static +ERL_NIF_TERM ncancel_send_current(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int sres; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "ncancel_send_current -> entry\r\n") ); + + DEMONP("ncancel_recv_current -> current writer", + env, descP, &descP->currentWriter.mon); + res = ncancel_write_select(env, descP, descP->currentWriter.ref); + + SSDBG( descP, ("SOCKET", "ncancel_send_current -> cancel res: %T\r\n", res) ); + + if (writer_pop(env, descP, + &descP->currentWriter.pid, + &descP->currentWriter.mon, + &descP->currentWriter.ref)) { + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "ncancel_send_current -> new (active) writer: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentWriter.pid, + descP->currentWriter.ref) ); + + if ((sres = esock_select_write(env, descP->sock, descP, + &descP->currentWriter.pid, + descP->currentWriter.ref)) < 0) { + return esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } + } else { + SSDBG( descP, ("SOCKET", "ncancel_send_current -> no more writers\r\n") ); + descP->currentWriterP = NULL; + } + + SSDBG( descP, ("SOCKET", "ncancel_send_current -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + +/* These processes have not performed a select, so we can simply + * remove them from the writer queue. + */ +static +ERL_NIF_TERM ncancel_send_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + /* unqueue request from (writer) queue */ + + if (writer_unqueue(env, descP, &caller)) { + return esock_atom_ok; + } else { + /* Race? */ + return esock_make_error(env, esock_atom_not_found); + } +} + + + +/* *** ncancel_recv *** + * + * Cancel a read operation. + * Its either the current reader or one of the waiting readers. + */ +static +ERL_NIF_TERM ncancel_recv(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ERL_NIF_TERM res; + + MLOCK(descP->readMtx); + + SSDBG( descP, + ("SOCKET", "ncancel_recv -> entry with" + "\r\n opRef: %T" + "\r\n %s" + "\r\n", opRef, + ((descP->currentReaderP == NULL) ? "without reader" : "with reader")) ); + + if (descP->currentReaderP != NULL) { + if (COMPARE(opRef, descP->currentReader.ref) == 0) { + res = ncancel_recv_current(env, descP); + } else { + res = ncancel_recv_waiting(env, descP, opRef); + } + } else { + /* Or badarg? */ + res = esock_make_error(env, esock_atom_einval); + } + + MUNLOCK(descP->readMtx); + + SSDBG( descP, + ("SOCKET", "ncancel_recv -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + +/* The current reader process has an ongoing select we first must + * cancel. Then we must re-activate the "first" (the first + * in the reader queue). + */ +static +ERL_NIF_TERM ncancel_recv_current(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int sres; + ERL_NIF_TERM res; + + SSDBG( descP, ("SOCKET", "ncancel_recv_current -> entry\r\n") ); + + DEMONP("ncancel_recv_current -> current reader", + env, descP, &descP->currentReader.mon); + res = ncancel_read_select(env, descP, descP->currentReader.ref); + + SSDBG( descP, ("SOCKET", "ncancel_recv_current -> cancel res: %T\r\n", res) ); + + if (reader_pop(env, descP, + &descP->currentReader.pid, + &descP->currentReader.mon, + &descP->currentReader.ref)) { + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "ncancel_recv_current -> new (active) reader: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentReader.pid, + descP->currentReader.ref) ); + + if ((sres = esock_select_read(env, descP->sock, descP, + &descP->currentReader.pid, + descP->currentReader.ref)) < 0) { + return esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } + } else { + SSDBG( descP, ("SOCKET", "ncancel_recv_current -> no more readers\r\n") ); + descP->currentReaderP = NULL; + } + + SSDBG( descP, ("SOCKET", "ncancel_recv_current -> done with result:" + "\r\n %T" + "\r\n", res) ); + + return res; +} + + +/* These processes have not performed a select, so we can simply + * remove them from the reader queue. + */ +static +ERL_NIF_TERM ncancel_recv_waiting(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + + /* unqueue request from (reader) queue */ + + if (reader_unqueue(env, descP, &caller)) { + return esock_atom_ok; + } else { + /* Race? */ + return esock_make_error(env, esock_atom_not_found); + } +} + + + +static +ERL_NIF_TERM ncancel_read_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + return ncancel_mode_select(env, descP, opRef, + ERL_NIF_SELECT_READ, + ERL_NIF_SELECT_READ_CANCELLED); +} + + +static +ERL_NIF_TERM ncancel_write_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef) +{ + return ncancel_mode_select(env, descP, opRef, + ERL_NIF_SELECT_WRITE, + ERL_NIF_SELECT_WRITE_CANCELLED); +} + + +static +ERL_NIF_TERM ncancel_mode_select(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM opRef, + int smode, + int rmode) +{ + int selectRes = esock_select_cancel(env, descP->sock, smode, descP); + + if (selectRes & rmode) { + /* Was cancelled */ + return esock_atom_ok; + } else if (selectRes > 0) { + /* Has already sent the message */ + return esock_make_error(env, esock_atom_select_sent); + } else { + /* Stopped? */ + SSDBG( descP, ("SOCKET", "ncancel_mode_select -> failed: %d (0x%lX)" + "\r\n", selectRes, selectRes) ); + return esock_make_error(env, esock_atom_einval); + } + +} +#endif // if !defined(__WIN32__) + + + + +/* ---------------------------------------------------------------------- + * U t i l i t y F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +/* *** send_check_writer *** + * + * Checks if we have a current writer and if that is us. If not, then we must + * be made to wait for our turn. This is done by pushing us unto the writer queue. + */ +#if !defined(__WIN32__) +static +BOOLEAN_T send_check_writer(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ERL_NIF_TERM* checkResult) +{ + if (descP->currentWriterP != NULL) { + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) { + *checkResult = esock_make_error(env, atom_exself); + return FALSE; + } + + if (!compare_pids(env, &descP->currentWriter.pid, &caller)) { + /* Not the "current writer", so (maybe) push onto queue */ + + SSDBG( descP, + ("SOCKET", "send_check_writer -> not (current) writer\r\n") ); + + if (!writer_search4pid(env, descP, &caller)) + *checkResult = writer_push(env, descP, caller, ref); + else + *checkResult = esock_make_error(env, esock_atom_eagain); + + SSDBG( descP, + ("SOCKET", + "send_check_writer -> queue (push) result: %T\r\n", + checkResult) ); + + return FALSE; + + } + + } + + *checkResult = esock_atom_ok; // Does not actually matter in this case, but ... + + return TRUE; +} + + + +/* *** send_check_result *** + * + * Check the result of a socket send (send, sendto and sendmsg) call. + * If a "complete" send has been made, the next (waiting) writer will be + * scheduled (if there is one). + * If we did not manage to send the entire package, make another select, + * so that we can be informed when we can make another try (to send the rest), + * and return with the amount we actually managed to send (its up to the caller + * (that is the erlang code) to figure out hust much is left to send). + * If the write fail, we give up and return with the appropriate error code. + * + * What about the remaining writers!! + */ +static +ERL_NIF_TERM send_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + ssize_t written, + ssize_t dataSize, + int saveErrno, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM sendRef) +{ + int sres; + + SSDBG( descP, + ("SOCKET", "send_check_result -> entry with" + "\r\n written: %d" + "\r\n dataSize: %d" + "\r\n saveErrno: %d" + "\r\n", written, dataSize, saveErrno) ); + + if (written >= dataSize) { + + cnt_inc(&descP->writePkgCnt, 1); + cnt_inc(&descP->writeByteCnt, written); + if (descP->currentWriterP != NULL) + DEMONP("send_check_result -> current writer", + env, descP, &descP->currentWriter.mon); + + SSDBG( descP, + ("SOCKET", "send_check_result -> " + "everything written (%d,%d) - done\r\n", dataSize, written) ); + + /* Ok, this write is done maybe activate the next (if any) */ + + if (writer_pop(env, descP, + &descP->currentWriter.pid, + &descP->currentWriter.mon, + &descP->currentWriter.ref)) { + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "send_check_result -> new (active) writer: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentWriter.pid, + descP->currentWriter.ref) ); + + if ((sres = esock_select_write(env, descP->sock, descP, + &descP->currentWriter.pid, + descP->currentWriter.ref)) < 0) { + return esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } + } else { + descP->currentWriterP = NULL; + } + + return esock_atom_ok; + + } else if (written < 0) { + + /* Some kind of send failure - check what kind */ + + if ((saveErrno != EAGAIN) && (saveErrno != EINTR)) { + ErlNifPid pid; + // ErlNifMonitor mon; + ESockMonitor mon; + ERL_NIF_TERM ref, res; + + /* + * An actual failure - we (and everyone waiting) give up + */ + + cnt_inc(&descP->writeFails, 1); + + SSDBG( descP, + ("SOCKET", "send_check_result -> error: %d\r\n", saveErrno) ); + + res = esock_make_error_errno(env, saveErrno); + + if (descP->currentWriterP != NULL) { + DEMONP("send_check_result -> current writer", + env, descP, &descP->currentWriter.mon); + + while (writer_pop(env, descP, &pid, &mon, &ref)) { + SSDBG( descP, + ("SOCKET", "send_check_result -> abort %T\r\n", pid) ); + esock_send_abort_msg(env, sockRef, ref, res, &pid); + DEMONP("send_check_result -> pop'ed writer", + env, descP, &mon); + } + } + + return res; + + } else { + /* Ok, try again later */ + + SSDBG( descP, ("SOCKET", "send_check_result -> try again\r\n") ); + } + + } + else { + SSDBG( descP, + ("SOCKET", "send_check_result -> " + "not entire package written (%d of %d)\r\n", written, dataSize) ); + } + + /* We failed to write the *entire* packet (anything less then size + * of the packet, which is 0 <= written < sizeof packet), + * so schedule the rest for later. + */ + + if (descP->currentWriterP == NULL) { + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) + return esock_make_error(env, atom_exself); + descP->currentWriter.pid = caller; + if (MONP("send_check_result -> current writer", + env, descP, + &descP->currentWriter.pid, + &descP->currentWriter.mon) != 0) + return esock_make_error(env, atom_exmon); + descP->currentWriter.ref = enif_make_copy(descP->env, sendRef); + descP->currentWriterP = &descP->currentWriter; + } + + cnt_inc(&descP->writeWaits, 1); + + sres = esock_select_write(env, descP->sock, descP, NULL, sendRef); + + if (written >= 0) { + if (sres < 0) { + /* Returned: {error, Reason} + * Reason: {select_failed, sres, written} + */ + return esock_make_error(env, + MKT3(env, + esock_atom_select_failed, + MKI(env, sres), + MKI(env, written))); + } else { + return esock_make_ok2(env, MKI(env, written)); + } + } else { + if (sres < 0) { + /* Returned: {error, Reason} + * Reason: {select_failed, sres} + */ + return esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } else { + return esock_make_error(env, esock_atom_eagain); + } + } +} + + + +/* *** recv_check_reader *** + * + * Checks if we have a current reader and if that is us. If not, then we must + * be made to wait for our turn. This is done by pushing us unto the reader queue. + */ +static +BOOLEAN_T recv_check_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM ref, + ERL_NIF_TERM* checkResult) +{ + if (descP->currentReaderP != NULL) { + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) { + *checkResult = esock_make_error(env, atom_exself); + return FALSE; + } + + if (!compare_pids(env, &descP->currentReader.pid, &caller)) { + ERL_NIF_TERM tmp; + + /* Not the "current reader", so (maybe) push onto queue */ + + SSDBG( descP, + ("SOCKET", "recv_check_reader -> not (current) reader\r\n") ); + + if (!reader_search4pid(env, descP, &caller)) + tmp = reader_push(env, descP, caller, ref); + else + tmp = esock_make_error(env, esock_atom_eagain); + + SSDBG( descP, + ("SOCKET", + "recv_check_reader -> queue (push) result: %T\r\n", tmp) ); + + *checkResult = tmp; + + return FALSE; + + } + + } + + *checkResult = esock_atom_ok; // Does not actually matter in this case, but ... + + return TRUE; +} + + + +/* *** recv_init_current_reader *** + * + * Initiate (maybe) the currentReader structure of the descriptor. + * Including monitoring the calling process. + */ +static +char* recv_init_current_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM recvRef) +{ + if (descP->currentReaderP == NULL) { + ErlNifPid caller; + + if (enif_self(env, &caller) == NULL) + return str_exself; + + descP->currentReader.pid = caller; + if (MONP("recv_init_current_reader -> current reader", + env, descP, + &descP->currentReader.pid, + &descP->currentReader.mon) != 0) { + return str_exmon; + } + descP->currentReader.ref = enif_make_copy(descP->env, recvRef); + descP->currentReaderP = &descP->currentReader; + } + + return NULL; +} + + + +/* *** recv_update_current_reader *** + * + * Demonitors the current reader process and pop's the reader queue. + * If there is a waiting (reader) process, then it will be assigned + * as the new current reader and a new (read) select will be done. + */ + +static +ERL_NIF_TERM recv_update_current_reader(ErlNifEnv* env, + SocketDescriptor* descP) +{ + int sres; + ERL_NIF_TERM res = esock_atom_ok; + + if (descP->currentReaderP != NULL) { + + DEMONP("recv_update_current_reader -> current reader", + env, descP, &descP->currentReader.mon); + + if (reader_pop(env, descP, + &descP->currentReader.pid, + &descP->currentReader.mon, + &descP->currentReader.ref)) { + + /* There was another one */ + + SSDBG( descP, + ("SOCKET", "recv_update_current_reader -> new (active) reader: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentReader.pid, + descP->currentReader.ref) ); + + if ((sres = esock_select_read(env, descP->sock, descP, + &descP->currentReader.pid, + descP->currentReader.ref)) < 0) { + res = esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } + } else { + descP->currentReaderP = NULL; + } + } + + return res; +} + + + +/* *** recv_error_current_reader *** + * + * Process the current reader and any waiting readers + * when a read (fatal) error has occured. + * All waiting readers will be "aborted", that is a + * nif_abort message will be sent (with reaf and reason). + */ +static +void recv_error_current_reader(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM reason) +{ + if (descP->currentReaderP != NULL) { + ErlNifPid pid; + // ErlNifMonitor mon; + ESockMonitor mon; + ERL_NIF_TERM ref; + + DEMONP("recv_error_current_reader -> current reader", + env, descP, &descP->currentReader.mon); + + while (reader_pop(env, descP, &pid, &mon, &ref)) { + SSDBG( descP, + ("SOCKET", "recv_error_current_reader -> abort %T\r\n", pid) ); + esock_send_abort_msg(env, sockRef, ref, reason, &pid); + DEMONP("recv_error_current_reader -> pop'ed reader", + env, descP, &mon); + } + } +} + + + +/* *** recv_check_result *** + * + * Process the result of a call to recv. + */ +static +ERL_NIF_TERM recv_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int toRead, + int saveErrno, + ErlNifBinary* bufP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef) +{ + char* xres; + int sres; + ERL_NIF_TERM res, data; + + SSDBG( descP, + ("SOCKET", "recv_check_result -> entry with" + "\r\n read: %d" + "\r\n toRead: %d" + "\r\n saveErrno: %d" + "\r\n recvRef: %T" + "\r\n", read, toRead, saveErrno, recvRef) ); + + + /* <KOLLA> + * + * We need to handle read = 0 for other type(s) (DGRAM) when + * its actually valid to read 0 bytes. + * + * </KOLLA> + */ + + if ((read == 0) && (descP->type == SOCK_STREAM)) { + + res = esock_make_error(env, atom_closed); + + /* + * When a stream socket peer has performed an orderly shutdown, the return + * value will be 0 (the traditional "end-of-file" return). + * + * *We* do never actually try to read 0 bytes from a stream socket! + * + * We must also notify any waiting readers! + */ + + recv_error_current_reader(env, descP, sockRef, res); + + FREE_BIN(bufP); + + return res; + + } + + /* There is a special case: If the provided 'to read' value is + * zero (0) (only for type =/= stream). + * That means that we reads as much as we can, using the default + * read buffer size. + */ + + if (bufP->size == read) { + + /* +++ We filled the buffer +++ */ + + SSDBG( descP, + ("SOCKET", + "recv_check_result -> [%d] filled the buffer\r\n", toRead) ); + + if (toRead == 0) { + + /* +++ Give us everything you have got => * + * (maybe) needs to continue +++ */ + + /* How do we do this? + * Either: + * 1) Send up each chunk of data for each of the read + * and let the erlang code assemble it: {ok, false, Bin} + * (when complete it should return {ok, true, Bin}). + * We need to read atleast one more time to be sure if its + * done... + * 2) Or put it in a buffer here, and then let the erlang code + * know that it should call again (special return value) + * (continuous binary realloc "here"). + * + * => We choose alt 1 for now. + * + * Also, we need to check if the rNumCnt has reached its max (rNum), + * in which case we will assume the read to be done! + */ + + cnt_inc(&descP->readByteCnt, read); + + SSDBG( descP, + ("SOCKET", "recv_check_result -> shall we continue reading" + "\r\n read: %d" + "\r\n rNum: %d" + "\r\n rNumCnt: %d" + "\r\n", read, descP->rNum, descP->rNumCnt) ); + + if (descP->rNum > 0) { + + descP->rNumCnt++; + if (descP->rNumCnt >= descP->rNum) { + + descP->rNumCnt = 0; + + cnt_inc(&descP->readPkgCnt, 1); + + recv_update_current_reader(env, descP); + + /* This transfers "ownership" of the *allocated* binary to an + * erlang term (no need for an explicit free). + */ + data = MKBIN(env, bufP); + + return esock_make_ok3(env, atom_true, data); + + } + } + + /* Yes, we *do* need to continue reading */ + + if ((xres = recv_init_current_reader(env, + descP, recvRef)) != NULL) { + descP->rNumCnt = 0; + FREE_BIN(bufP); + return esock_make_error_str(env, xres); + } + + /* This transfers "ownership" of the *allocated* binary to an + * erlang term (no need for an explicit free). + */ + data = MKBIN(env, bufP); + + SSDBG( descP, + ("SOCKET", + "recv_check_result -> [%d] " + "we are done for now - read more\r\n", toRead) ); + + return esock_make_ok3(env, atom_false, data); + + } else { + + /* +++ We got exactly as much as we requested => We are done +++ */ + + cnt_inc(&descP->readPkgCnt, 1); + cnt_inc(&descP->readByteCnt, read); + + SSDBG( descP, + ("SOCKET", + "recv_check_result -> [%d] " + "we got exactly what we could fit\r\n", toRead) ); + + recv_update_current_reader(env, descP); + + /* This transfers "ownership" of the *allocated* binary to an + * erlang term (no need for an explicit free). + */ + data = MKBIN(env, bufP); + + return esock_make_ok3(env, atom_true, data); + + } + + } else if (read < 0) { + + /* +++ Error handling +++ */ + + FREE_BIN(bufP); + + if (saveErrno == ECONNRESET) { + + res = esock_make_error(env, atom_closed); + + /* +++ Oups - closed +++ */ + + SSDBG( descP, ("SOCKET", + "recv_check_result -> [%d] closed\r\n", toRead) ); + + /* <KOLLA> + * + * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING + * PROCESS, WE NEED TO INFORM IT!!! + * + * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!! + * HANDLED BY THE STOP (CALLBACK) FUNCTION? + * + * SINCE THIS IS A REMOTE CLOSE, WE DON'T NEED TO WAIT + * FOR OUTPUT TO BE WRITTEN (NO ONE WILL READ), JUST + * ABORT THE SOCKET REGARDLESS OF LINGER??? + * + * </KOLLA> + */ + + descP->closeLocal = FALSE; + descP->state = SOCKET_STATE_CLOSING; + + recv_error_current_reader(env, descP, sockRef, res); + + if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) { + esock_warning_msg("Failed stop select (closed) " + "for current reader (%T): %d\r\n", + recvRef, sres); + } + + return res; + + } else if ((saveErrno == ERRNO_BLOCK) || + (saveErrno == EAGAIN)) { + + SSDBG( descP, ("SOCKET", + "recv_check_result -> [%d] eagain\r\n", toRead) ); + + descP->rNumCnt = 0; + if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL) + return esock_make_error_str(env, xres); + + SSDBG( descP, ("SOCKET", "recv_check_result -> SELECT for more\r\n") ); + + if ((sres = esock_select_read(env, descP->sock, descP, + NULL, recvRef)) < 0) { + res = esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } else { + res = esock_make_error(env, esock_atom_eagain); + } + + return res; + } else { + ERL_NIF_TERM res = esock_make_error_errno(env, saveErrno); + + SSDBG( descP, ("SOCKET", "recv_check_result -> [%d] errno: %d\r\n", + toRead, saveErrno) ); + + recv_error_current_reader(env, descP, sockRef, res); + + return res; + } + + } else { + + /* +++ We did not fill the buffer +++ */ + + SSDBG( descP, + ("SOCKET", + "recv_check_result -> [%d] " + "did not fill the buffer (%d of %d)\r\n", + toRead, read, bufP->size) ); + + if (toRead == 0) { + + /* +++ We got it all, but since we +++ + * +++ did not fill the buffer, we +++ + * +++ must split it into a sub-binary. +++ + */ + + SSDBG( descP, ("SOCKET", + "recv_check_result -> [%d] split buffer\r\n", toRead) ); + + descP->rNumCnt = 0; + cnt_inc(&descP->readPkgCnt, 1); + cnt_inc(&descP->readByteCnt, read); + + recv_update_current_reader(env, descP); + + /* This transfers "ownership" of the *allocated* binary to an + * erlang term (no need for an explicit free). + */ + data = MKBIN(env, bufP); + data = MKSBIN(env, data, 0, read); + + SSDBG( descP, + ("SOCKET", "recv_check_result -> [%d] done\r\n", toRead) ); + + return esock_make_ok3(env, atom_true, data); + + } else { + + /* +++ We got only a part of what was expected +++ + * +++ => select for more more later and +++ + * +++ deliver what we got. +++ */ + + SSDBG( descP, ("SOCKET", "recv_check_result -> [%d] " + "only part of message - expect more\r\n", toRead) ); + + if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL) { + FREE_BIN(bufP); + return esock_make_error_str(env, xres); + } + + data = MKBIN(env, bufP); + data = MKSBIN(env, data, 0, read); + + cnt_inc(&descP->readByteCnt, read); + + /* SELECT for more data */ + + if ((sres = esock_select_read(env, descP->sock, descP, + NULL, recvRef)) < 0) { + /* Result: {error, Reason} + * Reason: {select_failed, sres, data} + */ + res = esock_make_error(env, + MKT3(env, + esock_atom_select_failed, + MKI(env, sres), + data)); + } else { + res = esock_make_ok3(env, atom_false, data); + } + + /* This transfers "ownership" of the *allocated* binary to an + * erlang term (no need for an explicit free). + */ + return res; + } + } +} + + +/* The recvfrom function delivers one (1) message. If our buffer + * is to small, the message will be truncated. So, regardless + * if we filled the buffer or not, we have got what we are going + * to get regarding this message. + */ +static +ERL_NIF_TERM recvfrom_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int saveErrno, + ErlNifBinary* bufP, + SocketAddress* fromAddrP, + unsigned int fromAddrLen, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef) +{ + char* xres; + int sres; + ERL_NIF_TERM data, res; + + SSDBG( descP, + ("SOCKET", "recvfrom_check_result -> entry with" + "\r\n read: %d" + "\r\n saveErrno: %d" + "\r\n recvRef: %T" + "\r\n", read, saveErrno, recvRef) ); + + + /* There is a special case: If the provided 'to read' value is + * zero (0). That means that we reads as much as we can, using + * the default read buffer size. + */ + + if (read < 0) { + + /* +++ Error handling +++ */ + + if (saveErrno == ECONNRESET) { + res = esock_make_error(env, atom_closed); + + /* +++ Oups - closed +++ */ + + SSDBG( descP, ("SOCKET", "recvfrom_check_result -> closed\r\n") ); + + /* <KOLLA> + * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING + * PROCESS, WE NEED TO INFORM IT!!! + * + * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!! + * + * </KOLLA> + */ + + descP->closeLocal = FALSE; + descP->state = SOCKET_STATE_CLOSING; + + recv_error_current_reader(env, descP, sockRef, res); + + if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) { + esock_warning_msg("Failed stop select (closed) " + "for current reader (%T): %d\r\n", + recvRef, sres); + } + + FREE_BIN(bufP); + + return res; + + } else if ((saveErrno == ERRNO_BLOCK) || + (saveErrno == EAGAIN)) { + + SSDBG( descP, ("SOCKET", "recvfrom_check_result -> eagain\r\n") ); + + FREE_BIN(bufP); + + if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL) + return esock_make_error_str(env, xres); + + if ((sres = esock_select_read(env, descP->sock, descP, + NULL, recvRef)) < 0) { + res = esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } else { + res = esock_make_error(env, esock_atom_eagain); + } + + return res; + } else { + + res = esock_make_error_errno(env, saveErrno); + + SSDBG( descP, + ("SOCKET", + "recvfrom_check_result -> errno: %d\r\n", saveErrno) ); + + recv_error_current_reader(env, descP, sockRef, res); + + FREE_BIN(bufP); + + return res; + } + + } else { + + /* +++ We sucessfully got a message - time to encode the address +++ */ + + ERL_NIF_TERM eSockAddr; + + esock_encode_sockaddr(env, + fromAddrP, fromAddrLen, + &eSockAddr); + + if (read == bufP->size) { + data = MKBIN(env, bufP); + } else { + + /* +++ We got a chunk of data but +++ + * +++ since we did not fill the +++ + * +++ buffer, we must split it +++ + * +++ into a sub-binary. +++ + */ + + data = MKBIN(env, bufP); + data = MKSBIN(env, data, 0, read); + } + + recv_update_current_reader(env, descP); + + return esock_make_ok2(env, MKT2(env, eSockAddr, data)); + + } +} + + + +/* The recvmsg function delivers one (1) message. If our buffer + * is to small, the message will be truncated. So, regardless + * if we filled the buffer or not, we have got what we are going + * to get regarding this message. + */ +static +ERL_NIF_TERM recvmsg_check_result(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + int saveErrno, + struct msghdr* msgHdrP, + ErlNifBinary* dataBufP, + ErlNifBinary* ctrlBufP, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef) +{ + int sres; + ERL_NIF_TERM res; + + SSDBG( descP, + ("SOCKET", "recvmsg_check_result -> entry with" + "\r\n read: %d" + "\r\n saveErrno: %d" + "\r\n recvRef: %T" + "\r\n", read, saveErrno, recvRef) ); + + + /* <KOLLA> + * + * We need to handle read = 0 for other type(s) (DGRAM) when + * its actually valid to read 0 bytes. + * + * </KOLLA> + */ + + if ((read == 0) && (descP->type == SOCK_STREAM)) { + + /* + * When a stream socket peer has performed an orderly shutdown, the return + * value will be 0 (the traditional "end-of-file" return). + * + * *We* do never actually try to read 0 bytes from a stream socket! + */ + + + FREE_BIN(dataBufP); FREE_BIN(ctrlBufP); + + return esock_make_error(env, atom_closed); + + } + + + /* There is a special case: If the provided 'to read' value is + * zero (0). That means that we reads as much as we can, using + * the default read buffer size. + */ + + if (read < 0) { + + /* +++ Error handling +++ */ + + if (saveErrno == ECONNRESET) { + + /* +++ Oups - closed +++ */ + + SSDBG( descP, ("SOCKET", "recvmsg_check_result -> closed\r\n") ); + + /* <KOLLA> + * IF THE CURRENT PROCESS IS *NOT* THE CONTROLLING + * PROCESS, WE NEED TO INFORM IT!!! + * + * ALL WAITING PROCESSES MUST ALSO GET THE ERROR!! + * + * </KOLLA> + */ + + res = esock_make_error(env, atom_closed); + descP->closeLocal = FALSE; + descP->state = SOCKET_STATE_CLOSING; + + recv_error_current_reader(env, descP, sockRef, res); + + if ((sres = esock_select_stop(env, descP->sock, descP)) < 0) { + esock_warning_msg("Failed stop select (closed) " + "for current reader (%T): %d\r\n", + recvRef, sres); + } + + FREE_BIN(dataBufP); FREE_BIN(ctrlBufP); + + return res;; + + } else if ((saveErrno == ERRNO_BLOCK) || + (saveErrno == EAGAIN)) { + char* xres; + + SSDBG( descP, ("SOCKET", "recvmsg_check_result -> eagain\r\n") ); + + FREE_BIN(dataBufP); FREE_BIN(ctrlBufP); + + if ((xres = recv_init_current_reader(env, descP, recvRef)) != NULL) + return esock_make_error_str(env, xres); + + if ((sres = esock_select_read(env, descP->sock, descP, + NULL, recvRef)) < 0) { + res = esock_make_error(env, + MKT2(env, + esock_atom_select_failed, + MKI(env, sres))); + } else { + res = esock_make_error(env, esock_atom_eagain); + } + + return res; + + } else { + + res = esock_make_error_errno(env, saveErrno); + + SSDBG( descP, + ("SOCKET", + "recvmsg_check_result -> errno: %d\r\n", saveErrno) ); + + recv_error_current_reader(env, descP, sockRef, res); + + FREE_BIN(dataBufP); FREE_BIN(ctrlBufP); + + return res; + } + + } else { + + /* +++ We sucessfully got a message - time to encode it +++ */ + + ERL_NIF_TERM eMsgHdr; + char* xres; + + /* + * <KOLLA> + * + * The return value of recvmsg is the *total* number of bytes + * that where successfully read. This data has been put into + * the *IO vector*. + * + * </KOLLA> + */ + + if ((xres = encode_msghdr(env, descP, + read, msgHdrP, dataBufP, ctrlBufP, + &eMsgHdr)) != NULL) { + + SSDBG( descP, + ("SOCKET", + "recvmsg_check_result -> " + "(msghdr) encode failed: %s\r\n", xres) ); + + recv_update_current_reader(env, descP); + + FREE_BIN(dataBufP); FREE_BIN(ctrlBufP); + + return esock_make_error_str(env, xres); + } else { + + SSDBG( descP, + ("SOCKET", + "recvmsg_check_result -> " + "(msghdr) encode ok: %T\r\n", eMsgHdr) ); + + recv_update_current_reader(env, descP); + + return esock_make_ok2(env, eMsgHdr); + } + + } +} + + + + +/* +++ encode_msghdr +++ + * + * Encode a msghdr (recvmsg). In erlang its represented as + * a map, which has a specific set of attributes: + * + * addr (source address) - sockaddr() + * iov - [binary()] + * ctrl - [cmsghdr()] + * flags - msghdr_flags() + */ + +extern +char* encode_msghdr(ErlNifEnv* env, + SocketDescriptor* descP, + int read, + struct msghdr* msgHdrP, + ErlNifBinary* dataBufP, + ErlNifBinary* ctrlBufP, + ERL_NIF_TERM* eSockAddr) +{ + char* xres; + ERL_NIF_TERM addr, iov, ctrl, flags; + + SSDBG( descP, + ("SOCKET", "encode_msghdr -> entry with" + "\r\n read: %d" + "\r\n", read) ); + + /* The address is not used if we are connected, + * so check (length = 0) before we try to encodel + */ + if (msgHdrP->msg_namelen != 0) { + if ((xres = esock_encode_sockaddr(env, + (SocketAddress*) msgHdrP->msg_name, + msgHdrP->msg_namelen, + &addr)) != NULL) + return xres; + } else { + addr = esock_atom_undefined; + } + + SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode iov\r\n") ); + if ((xres = esock_encode_iov(env, + read, + msgHdrP->msg_iov, + msgHdrP->msg_iovlen, + dataBufP, + &iov)) != NULL) + return xres; + + SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode cmsghdrs\r\n") ); + if ((xres = encode_cmsghdrs(env, descP, ctrlBufP, msgHdrP, &ctrl)) != NULL) + return xres; + + SSDBG( descP, ("SOCKET", "encode_msghdr -> try encode flags\r\n") ); + if ((xres = encode_msghdr_flags(env, descP, msgHdrP->msg_flags, &flags)) != NULL) + return xres; + + SSDBG( descP, + ("SOCKET", "encode_msghdr -> components encoded:" + "\r\n addr: %T" + "\r\n iov: %T" + "\r\n ctrl: %T" + "\r\n flags: %T" + "\r\n", addr, iov, ctrl, flags) ); + { + ERL_NIF_TERM keys[] = {esock_atom_addr, + esock_atom_iov, + esock_atom_ctrl, + esock_atom_flags}; + ERL_NIF_TERM vals[] = {addr, iov, ctrl, flags}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + ERL_NIF_TERM tmp; + + ESOCK_ASSERT( (numKeys == numVals) ); + + SSDBG( descP, ("SOCKET", "encode_msghdr -> create msghdr map\r\n") ); + if (!MKMA(env, keys, vals, numKeys, &tmp)) + return ESOCK_STR_EINVAL; + + SSDBG( descP, ("SOCKET", "encode_msghdr -> msghdr: " + "\r\n %T" + "\r\n", tmp) ); + + *eSockAddr = tmp; + } + + SSDBG( descP, ("SOCKET", "encode_msghdr -> done\r\n") ); + + return NULL; +} + + + + +/* +++ encode_cmsghdrs +++ + * + * Encode a list of cmsghdr(). There can be 0 or more cmsghdr "blocks". + * + * Our "problem" is that we have no idea how many control messages + * we have. + * + * The cmsgHdrP arguments points to the start of the control data buffer, + * an actual binary. Its the only way to create sub-binaries. So, what we + * need to continue processing this is to turn that into an binary erlang + * term (which can then in turn be turned into sub-binaries). + * + * We need the cmsgBufP (even though cmsgHdrP points to it) to be able + * to create sub-binaries (one for each cmsg hdr). + * + * The TArray (term array) is created with the size of 128, which should + * be enough. But if its not, then it will be automatically realloc'ed during + * add. Once we are done adding hdr's to it, we convert the tarray to a list. + */ + +extern +char* encode_cmsghdrs(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifBinary* cmsgBinP, + struct msghdr* msgHdrP, + ERL_NIF_TERM* eCMsgHdr) +{ + ERL_NIF_TERM ctrlBuf = MKBIN(env, cmsgBinP); // The *entire* binary + SocketTArray cmsghdrs = TARRAY_CREATE(128); + struct cmsghdr* firstP = CMSG_FIRSTHDR(msgHdrP); + struct cmsghdr* currentP; + + SSDBG( descP, ("SOCKET", "encode_cmsghdrs -> entry\r\n") ); + + for (currentP = firstP; + currentP != NULL; + currentP = CMSG_NXTHDR(msgHdrP, currentP)) { + + SSDBG( descP, + ("SOCKET", "encode_cmsghdrs -> process cmsg header when" + "\r\n TArray Size: %d" + "\r\n", TARRAY_SZ(cmsghdrs)) ); + + /* MUST check this since on Linux the returned "cmsg" may actually + * go too far! + */ + if (((CHARP(currentP) + currentP->cmsg_len) - CHARP(firstP)) > + msgHdrP->msg_controllen) { + /* Ouch, fatal error - give up + * We assume we cannot trust any data if this is wrong. + */ + TARRAY_DELETE(cmsghdrs); + return ESOCK_STR_EINVAL; + } else { + ERL_NIF_TERM level, type, data; + unsigned char* dataP = (unsigned char*) CMSG_DATA(currentP); + size_t dataPos = dataP - cmsgBinP->data; + size_t dataLen = currentP->cmsg_len - (CHARP(currentP)-CHARP(dataP)); + + SSDBG( descP, + ("SOCKET", "encode_cmsghdrs -> cmsg header data: " + "\r\n dataPos: %d" + "\r\n dataLen: %d" + "\r\n", dataPos, dataLen) ); + + /* We can't give up just because its an unknown protocol, + * so if its a protocol we don't know, we return its integer + * value and leave it to the user. + */ + if (encode_cmsghdr_level(env, currentP->cmsg_level, &level) != NULL) + level = MKI(env, currentP->cmsg_level); + + if (encode_cmsghdr_type(env, + currentP->cmsg_level, currentP->cmsg_type, + &type) != NULL) + type = MKI(env, currentP->cmsg_type); + + if (encode_cmsghdr_data(env, ctrlBuf, + currentP->cmsg_level, + currentP->cmsg_type, + dataP, dataPos, dataLen, + &data) != NULL) + data = MKSBIN(env, ctrlBuf, dataPos, dataLen); + + SSDBG( descP, + ("SOCKET", "encode_cmsghdrs -> " + "\r\n level: %T" + "\r\n type: %T" + "\r\n data: %T" + "\r\n", level, type, data) ); + + /* And finally create the 'cmsghdr' map - + * and if successfull add it to the tarray. + */ + { + ERL_NIF_TERM keys[] = {esock_atom_level, + esock_atom_type, + esock_atom_data}; + ERL_NIF_TERM vals[] = {level, type, data}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + ERL_NIF_TERM cmsgHdr; + + /* Guard agains cut-and-paste errors */ + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &cmsgHdr)) { + TARRAY_DELETE(cmsghdrs); + return ESOCK_STR_EINVAL; + } + + /* And finally add it to the list... */ + TARRAY_ADD(cmsghdrs, cmsgHdr); + } + } + } + + SSDBG( descP, + ("SOCKET", "encode_cmsghdrs -> cmsg headers processed when" + "\r\n TArray Size: %d" + "\r\n", TARRAY_SZ(cmsghdrs)) ); + + /* The tarray is populated - convert it to a list */ + TARRAY_TOLIST(cmsghdrs, env, eCMsgHdr); + + return NULL; +} + + + +/* +++ decode_cmsghdrs +++ + * + * Decode a list of cmsghdr(). There can be 0 or more cmsghdr "blocks". + * + * Each element can either be a (erlang) map that needs to be decoded, + * or a (erlang) binary that just needs to be appended to the control + * buffer. + * + * Our "problem" is that we have no idea much memory we actually need. + * + */ + +extern +char* decode_cmsghdrs(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eCMsgHdr, + char* cmsgHdrBufP, + size_t cmsgHdrBufLen, + size_t* cmsgHdrBufUsed) +{ + ERL_NIF_TERM elem, tail, list; + char* bufP; + size_t rem, used, totUsed = 0; + unsigned int len; + int i; + char* xres; + + SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> entry with" + "\r\n cmsgHdrBufP: 0x%lX" + "\r\n cmsgHdrBufLen: %d" + "\r\n", cmsgHdrBufP, cmsgHdrBufLen) ); + + if (IS_LIST(env, eCMsgHdr) && GET_LIST_LEN(env, eCMsgHdr, &len)) { + + SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> list length: %d\r\n", len) ); + + for (i = 0, list = eCMsgHdr, rem = cmsgHdrBufLen, bufP = cmsgHdrBufP; + i < len; i++) { + + SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> process elem %d:" + "\r\n (buffer) rem: %u" + "\r\n (buffer) totUsed: %u" + "\r\n", i, rem, totUsed) ); + + /* Extract the (current) head of the (cmsg hdr) list */ + if (!GET_LIST_ELEM(env, list, &elem, &tail)) + return ESOCK_STR_EINVAL; + + used = 0; // Just in case... + if ((xres = decode_cmsghdr(env, descP, elem, bufP, rem, &used)) != NULL) + return xres; + + bufP = CHARP( ULONG(bufP) + used ); + rem = SZT( rem - used ); + list = tail; + totUsed += used; + + } + + SSDBG( descP, ("SOCKET", + "decode_cmsghdrs -> all %d ctrl headers processed\r\n", + len) ); + + xres = NULL; + } else { + xres = ESOCK_STR_EINVAL; + } + + *cmsgHdrBufUsed = totUsed; + + SSDBG( descP, ("SOCKET", "decode_cmsghdrs -> done with %s when" + "\r\n totUsed = %u\r\n", + ((xres != NULL) ? xres : "NULL"), totUsed) ); + + return xres; +} + + +/* +++ decode_cmsghdr +++ + * + * Decode one cmsghdr(). Put the "result" into the buffer and advance the + * pointer (of the buffer) afterwards. Also update 'rem' accordingly. + * But before the actual decode, make sure that there is enough room in + * the buffer for the cmsg header (sizeof(*hdr) < rem). + * + * The eCMsgHdr should be a map with three fields: + * + * level :: cmsghdr_level() (socket | protocol() | integer()) + * type :: cmsghdr_type() (atom() | integer()) + * What values are valid depend on the level + * data :: cmsghdr_data() (term() | binary()) + * The type of the data depends on + * level and type, but can be a binary, + * which means that the data is already coded. + */ +extern +char* decode_cmsghdr(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eCMsgHdr, + char* bufP, + size_t rem, + size_t* used) +{ + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> entry with" + "\r\n eCMsgHdr: %T" + "\r\n", eCMsgHdr) ); + + if (IS_MAP(env, eCMsgHdr)) { + ERL_NIF_TERM eLevel, eType, eData; + int level, type; + char* xres; + + /* First extract all three attributes (as terms) */ + + if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_level, &eLevel)) + return ESOCK_STR_EINVAL; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eLevel: %T" + "\r\n", eLevel) ); + + if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_type, &eType)) + return ESOCK_STR_EINVAL; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eType: %T" + "\r\n", eType) ); + + if (!GET_MAP_VAL(env, eCMsgHdr, esock_atom_data, &eData)) + return ESOCK_STR_EINVAL; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> eData: %T" + "\r\n", eData) ); + + /* Second, decode level */ + if ((xres = decode_cmsghdr_level(env, eLevel, &level)) != NULL) + return xres; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> level: %d\r\n", level) ); + + /* third, decode type */ + if ((xres = decode_cmsghdr_type(env, level, eType, &type)) != NULL) + return xres; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr -> type: %d\r\n", type) ); + + /* And finally data + * If its a binary, we are done. Otherwise, we need to check + * level and type to know what kind of data to expect. + */ + + return decode_cmsghdr_data(env, descP, bufP, rem, level, type, eData, used); + + } else { + *used = 0; + return ESOCK_STR_EINVAL; + } + + return NULL; +} + + +/* *** decode_cmsghdr_data *** + * + * For all combinations of level and type we accept a binary as data, + * so we begin by testing for that. If its not a binary, then we check + * level (ip) and type (tos or ttl), in which case the data *must* be + * an integer and ip_tos() respectively. + */ +static +char* decode_cmsghdr_data(ErlNifEnv* env, + SocketDescriptor* descP, + char* bufP, + size_t rem, + int level, + int type, + ERL_NIF_TERM eData, + size_t* used) +{ + char* xres; + + SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> entry with" + "\r\n eData: %T" + "\r\n", eData) ); + + if (IS_BIN(env, eData)) { + ErlNifBinary bin; + + if (GET_BIN(env, eData, &bin)) { + SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> " + "do final decode with binary\r\n") ); + return decode_cmsghdr_final(descP, bufP, rem, level, type, + (char*) bin.data, bin.size, + used); + } else { + *used = 0; + xres = ESOCK_STR_EINVAL; + } + } else { + + /* Its *not* a binary so we need to look at what level and type + * we have and treat them individually. + */ + + switch (level) { +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + switch (type) { +#if defined(IP_TOS) + case IP_TOS: + { + int data; + if (decode_ip_tos(env, eData, &data)) { + SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> " + "do final decode with tos\r\n") ); + return decode_cmsghdr_final(descP, bufP, rem, level, type, + (char*) &data, + sizeof(data), + used); + } else { + *used = 0; + xres = ESOCK_STR_EINVAL; + } + } + break; +#endif + +#if defined(IP_TTL) + case IP_TTL: + { + int data; + if (GET_INT(env, eData, &data)) { + SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> " + "do final decode with ttl\r\n") ); + return decode_cmsghdr_final(descP, bufP, rem, level, type, + (char*) &data, + sizeof(data), + used); + } else { + *used = 0; + xres = ESOCK_STR_EINVAL; + } + } + break; +#endif + + } + break; + + default: + *used = 0; + xres = ESOCK_STR_EINVAL; + break; + } + + } + + return xres; +} + + +/* *** decode_cmsghdr_final *** + * + * This does the final create of the cmsghdr (including the data copy). + */ +static +char* decode_cmsghdr_final(SocketDescriptor* descP, + char* bufP, + size_t rem, + int level, + int type, + char* data, + int sz, + size_t* used) +{ + int len = CMSG_LEN(sz); + int space = CMSG_SPACE(sz); + + SSDBG( descP, ("SOCKET", "decode_cmsghdr_data -> entry when" + "\r\n level: %d" + "\r\n type: %d" + "\r\n sz: %d => %d, %d" + "\r\n", level, type, sz, len, space) ); + + if (rem >= space) { + struct cmsghdr* cmsgP = (struct cmsghdr*) bufP; + + /* The header */ + cmsgP->cmsg_len = len; + cmsgP->cmsg_level = level; + cmsgP->cmsg_type = type; + + sys_memcpy(CMSG_DATA(cmsgP), data, sz); + *used = space; + } else { + *used = 0; + return ESOCK_STR_EINVAL; + } + + SSDBG( descP, ("SOCKET", "decode_cmsghdr_final -> done\r\n") ); + + return NULL; +} + + +/* +++ encode_cmsghdr_level +++ + * + * Encode the level part of the cmsghdr(). + * + */ + +static +char* encode_cmsghdr_level(ErlNifEnv* env, + int level, + ERL_NIF_TERM* eLevel) +{ + char* xres; + + switch (level) { + case SOL_SOCKET: + *eLevel = esock_atom_socket; + xres = NULL; + break; + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + *eLevel = esock_atom_ip; + xres = NULL; + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + *eLevel = esock_atom_ip; + xres = NULL; + break; +#endif + + case IPPROTO_UDP: + *eLevel = esock_atom_udp; + xres = NULL; + break; + + default: + *eLevel = MKI(env, level); + xres = NULL; + break; + } + + return xres; +} + + + +/* +++ decode_cmsghdr_level +++ + * + * Decode the level part of the cmsghdr(). + * + */ + +static +char* decode_cmsghdr_level(ErlNifEnv* env, + ERL_NIF_TERM eLevel, + int* level) +{ + char* xres = NULL; + + if (IS_ATOM(env, eLevel)) { + + if (COMPARE(eLevel, esock_atom_socket) == 0) { + *level = SOL_SOCKET; + xres = NULL; + } else if (COMPARE(eLevel, esock_atom_ip) == 0) { +#if defined(SOL_IP) + *level = SOL_IP; +#else + *level = IPPROTO_IP; +#endif + xres = NULL; +#if defined(HAVE_IPV6) + } else if (COMPARE(eLevel, esock_atom_ipv6) == 0) { +#if defined(SOL_IPV6) + *level = SOL_IPV6; +#else + *level = IPPROTO_IPV6; +#endif + xres = NULL; +#endif + } else if (COMPARE(eLevel, esock_atom_udp) == 0) { + *level = IPPROTO_UDP; + xres = NULL; + } else { + *level = -1; + xres = ESOCK_STR_EINVAL; + } + } else if (IS_NUM(env, eLevel)) { + if (!GET_INT(env, eLevel, level)) + xres = ESOCK_STR_EINVAL; + } else { + *level = -1; + xres = ESOCK_STR_EINVAL; + } + + return xres; +} + + + +/* +++ encode_cmsghdr_type +++ + * + * Encode the type part of the cmsghdr(). + * + */ + +static +char* encode_cmsghdr_type(ErlNifEnv* env, + int level, + int type, + ERL_NIF_TERM* eType) +{ + char* xres = NULL; + + switch (level) { + case SOL_SOCKET: + switch (type) { +#if defined(SO_TIMESTAMP) + case SO_TIMESTAMP: + *eType = esock_atom_timestamp; + break; +#endif + +#if defined(SCM_RIGHTS) + case SCM_RIGHTS: + *eType = esock_atom_rights; + break; +#endif + +#if defined(SCM_CREDENTIALS) + case SCM_CREDENTIALS: + *eType = esock_atom_credentials; + break; +#endif + + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + switch (type) { +#if defined(IP_TOS) + case IP_TOS: + *eType = esock_atom_tos; + break; +#endif + +#if defined(IP_TTL) + case IP_TTL: + *eType = esock_atom_ttl; + break; +#endif + +#if defined(IP_PKTINFO) + case IP_PKTINFO: + *eType = esock_atom_pktinfo; + break; +#endif + +#if defined(IP_ORIGDSTADDR) + case IP_ORIGDSTADDR: + *eType = esock_atom_origdstaddr; + break; +#endif + + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + switch (type) { +#if defined(IPV6_PKTINFO) + case IPV6_PKTINFO: + *eType = esock_atom_pktinfo; + break; +#endif + + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; +#endif + + case IPPROTO_TCP: + switch (type) { + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; + + case IPPROTO_UDP: + switch (type) { + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; + +#if defined(HAVE_SCTP) + case IPPROTO_SCTP: + switch (type) { + default: + xres = ESOCK_STR_EINVAL; + break; + } + break; +#endif + + default: + xres = ESOCK_STR_EINVAL; + break; + } + + return xres; +} + + + +/* +++ decode_cmsghdr_type +++ + * + * Decode the type part of the cmsghdr(). + * + */ + +static +char* decode_cmsghdr_type(ErlNifEnv* env, + int level, + ERL_NIF_TERM eType, + int* type) +{ + char* xres = NULL; + + switch (level) { + case SOL_SOCKET: + if (IS_NUM(env, eType)) { + if (!GET_INT(env, eType, type)) { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + } else { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + break; + + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + if (IS_ATOM(env, eType)) { + if (COMPARE(eType, esock_atom_tos) == 0) { +#if defined(IP_TOS) + *type = IP_TOS; +#else + xres = ESOCK_STR_EINVAL; +#endif + } else if (COMPARE(eType, esock_atom_ttl) == 0) { +#if defined(IP_TTL) + *type = IP_TTL; +#else + xres = ESOCK_STR_EINVAL; +#endif + } else { + xres = ESOCK_STR_EINVAL; + } + } else if (IS_NUM(env, eType)) { + if (!GET_INT(env, eType, type)) { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + } else { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + if (IS_NUM(env, eType)) { + if (!GET_INT(env, eType, type)) { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + } else { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + break; +#endif + + case IPPROTO_UDP: + if (IS_NUM(env, eType)) { + if (!GET_INT(env, eType, type)) { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + } else { + *type = -1; + xres = ESOCK_STR_EINVAL; + } + break; + + default: + *type = -1; + xres = ESOCK_STR_EINVAL; + break; + } + + return xres; +} + + + +/* +++ encode_cmsghdr_data +++ + * + * Encode the data part of the cmsghdr(). + * + */ + +static +char* encode_cmsghdr_data(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int level, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData) +{ + char* xres; + + switch (level) { +#if defined(SOL_SOCKET) + case SOL_SOCKET: + xres = encode_cmsghdr_data_socket(env, ctrlBuf, type, + dataP, dataPos, dataLen, + eCMsgHdrData); + break; +#endif + +#if defined(SOL_IP) + case SOL_IP: +#else + case IPPROTO_IP: +#endif + xres = encode_cmsghdr_data_ip(env, ctrlBuf, type, + dataP, dataPos, dataLen, + eCMsgHdrData); + break; + +#if defined(HAVE_IPV6) +#if defined(SOL_IPV6) + case SOL_IPV6: +#else + case IPPROTO_IPV6: +#endif + xres = encode_cmsghdr_data_ipv6(env, ctrlBuf, type, + dataP, dataPos, dataLen, + eCMsgHdrData); + break; +#endif + + /* + case IPPROTO_TCP: + xres = encode_cmsghdr_data_tcp(env, type, dataP, eCMsgHdrData); + break; + */ + + /* + case IPPROTO_UDP: + xres = encode_cmsghdr_data_udp(env, type, dataP, eCMsgHdrData); + break; + */ + + /* + #if defined(HAVE_SCTP) + case IPPROTO_SCTP: + xres = encode_cmsghdr_data_sctp(env, type, dataP, eCMsgHdrData); + break; + #endif + */ + + default: + *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen); + xres = NULL; + break; + } + + return xres; +} + + + +/* +++ encode_cmsghdr_data_socket +++ + * + * Encode the data part when "protocol" = socket of the cmsghdr(). + * + */ + +static +char* encode_cmsghdr_data_socket(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData) +{ + // char* xres; + + switch (type) { +#if defined(SO_TIMESTAMP) + case SO_TIMESTAMP: + { + struct timeval* timeP = (struct timeval*) dataP; + + if (esock_encode_timeval(env, timeP, eCMsgHdrData) != NULL) + *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen); + } + break; +#endif + + default: + *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen); + break; + } + + return NULL; +} + + + +/* +++ encode_cmsghdr_data_ip +++ + * + * Encode the data part when protocol = IP of the cmsghdr(). + * + */ + +static +char* encode_cmsghdr_data_ip(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData) +{ + char* xres = NULL; + + switch (type) { +#if defined(IP_TOS) + case IP_TOS: + { + unsigned char tos = *dataP; + switch (IPTOS_TOS(tos)) { + case IPTOS_LOWDELAY: + *eCMsgHdrData = esock_atom_lowdelay; + break; + case IPTOS_THROUGHPUT: + *eCMsgHdrData = esock_atom_throughput; + break; + case IPTOS_RELIABILITY: + *eCMsgHdrData = esock_atom_reliability; + break; +#if defined(IPTOS_MINCOST) + case IPTOS_MINCOST: + *eCMsgHdrData = esock_atom_mincost; + break; +#endif + default: + *eCMsgHdrData = MKUI(env, tos); + break; + } + } + break; +#endif + +#if defined(IP_TTL) + case IP_TTL: + { + int ttl = *((int*) dataP); + *eCMsgHdrData = MKI(env, ttl); + } + break; +#endif + +#if defined(IP_PKTINFO) + case IP_PKTINFO: + { + struct in_pktinfo* pktInfoP = (struct in_pktinfo*) dataP; + ERL_NIF_TERM ifIndex = MKUI(env, pktInfoP->ipi_ifindex); + ERL_NIF_TERM specDst, addr; + + if ((xres = esock_encode_ip4_address(env, + &pktInfoP->ipi_spec_dst, + &specDst)) != NULL) { + *eCMsgHdrData = esock_atom_undefined; + return xres; + } + + if ((xres = esock_encode_ip4_address(env, + &pktInfoP->ipi_addr, + &addr)) != NULL) { + *eCMsgHdrData = esock_atom_undefined; + return xres; + } + + + { + ERL_NIF_TERM keys[] = {esock_atom_ifindex, + esock_atom_spec_dst, + esock_atom_addr}; + ERL_NIF_TERM vals[] = {ifIndex, specDst, addr}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, eCMsgHdrData)) { + *eCMsgHdrData = esock_atom_undefined; + return ESOCK_STR_EINVAL; + } + } + } + break; +#endif + +#if defined(IP_ORIGDSTADDR) + case IP_ORIGDSTADDR: + if ((xres = esock_encode_sockaddr_in4(env, + (struct sockaddr_in*) dataP, + dataLen, + eCMsgHdrData)) != NULL) { + *eCMsgHdrData = esock_atom_undefined; + return xres; + } + break; +#endif + + default: + *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen); + break; + } + + return xres; +} + + + +/* +++ encode_cmsghdr_data_ipv6 +++ + * + * Encode the data part when protocol = IPv6 of the cmsghdr(). + * + */ +#if defined(HAVE_IPV6) +static +char* encode_cmsghdr_data_ipv6(ErlNifEnv* env, + ERL_NIF_TERM ctrlBuf, + int type, + unsigned char* dataP, + size_t dataPos, + size_t dataLen, + ERL_NIF_TERM* eCMsgHdrData) +{ + char* xres; + + switch (type) { +#if defined(IPV6_PKTINFO) + case IPV6_PKTINFO: + { + struct in6_pktinfo* pktInfoP = (struct in6_pktinfo*) dataP; + ERL_NIF_TERM ifIndex = MKI(env, pktInfoP->ipi6_ifindex); + ERL_NIF_TERM addr; + + if ((xres = esock_encode_ip6_address(env, + &pktInfoP->ipi6_addr, + &addr)) != NULL) { + *eCMsgHdrData = esock_atom_undefined; + return xres; + } + + { + ERL_NIF_TERM keys[] = {esock_atom_addr, esock_atom_ifindex}; + ERL_NIF_TERM vals[] = {addr, ifIndex}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, eCMsgHdrData)) { + *eCMsgHdrData = esock_atom_undefined; + return ESOCK_STR_EINVAL; + } + } + } + break; +#endif + + default: + *eCMsgHdrData = MKSBIN(env, ctrlBuf, dataPos, dataLen); + break; + } + + return NULL; +} +#endif + + + +/* +++ encode_msghdr_flags +++ + * + * Encode a list of msghdr_flag(). + * + * The following flags are handled: eor | trunc | ctrunc | oob | errqueue. + */ + +extern +char* encode_msghdr_flags(ErlNifEnv* env, + SocketDescriptor* descP, + int msgFlags, + ERL_NIF_TERM* flags) +{ + SSDBG( descP, + ("SOCKET", "encode_cmsghdrs_flags -> entry with" + "\r\n msgFlags: %d (0x%lX)" + "\r\n", msgFlags, msgFlags) ); + + if (msgFlags == 0) { + *flags = MKEL(env); + return NULL; + } else { + SocketTArray ta = TARRAY_CREATE(10); // Just to be on the safe side + +#if defined(MSG_EOR) + if ((msgFlags & MSG_EOR) == MSG_EOR) + TARRAY_ADD(ta, esock_atom_eor); +#endif + +#if defined(MSG_TRUNC) + if ((msgFlags & MSG_TRUNC) == MSG_TRUNC) + TARRAY_ADD(ta, esock_atom_trunc); +#endif + +#if defined(MSG_CTRUNC) + if ((msgFlags & MSG_CTRUNC) == MSG_CTRUNC) + TARRAY_ADD(ta, esock_atom_ctrunc); +#endif + +#if defined(MSG_OOB) + if ((msgFlags & MSG_OOB) == MSG_OOB) + TARRAY_ADD(ta, esock_atom_oob); +#endif + +#if defined(MSG_ERRQUEUE) + if ((msgFlags & MSG_ERRQUEUE) == MSG_ERRQUEUE) + TARRAY_ADD(ta, esock_atom_errqueue); +#endif + + SSDBG( descP, + ("SOCKET", "esock_encode_cmsghdrs -> flags processed when" + "\r\n TArray size: %d" + "\r\n", TARRAY_SZ(ta)) ); + + TARRAY_TOLIST(ta, env, flags); + + return NULL; + } +} + + + + +/* +++ decode the linger value +++ + * The (socket) linger option is provided as a two tuple: + * + * {OnOff :: boolean(), Time :: integer()} + * + */ +static +BOOLEAN_T decode_sock_linger(ErlNifEnv* env, ERL_NIF_TERM eVal, struct linger* valP) +{ + const ERL_NIF_TERM* lt; // The array of the elements of the tuple + int sz; // The size of the tuple - should be 2 + BOOLEAN_T onOff; + int secs; + + if (!GET_TUPLE(env, eVal, &sz, <)) + return FALSE; + + if (sz != 2) + return FALSE; + + + /* So fas so good - now check the two elements of the tuple. */ + + onOff = esock_decode_bool(lt[0]); + + if (!GET_INT(env, lt[1], &secs)) + return FALSE; + + valP->l_onoff = (onOff) ? 1 : 0; + valP->l_linger = secs; + + return TRUE; +} + + + +/* +++ decode the ip socket option TOS +++ + * The (ip) option can be provide in two ways: + * + * atom() | integer() + * + * When its an atom it can have the values: + * + * lowdelay | throughput | reliability | mincost + * + */ +#if defined(IP_TOS) +static +BOOLEAN_T decode_ip_tos(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val) +{ + BOOLEAN_T result = FALSE; + + if (IS_ATOM(env, eVal)) { + + if (COMPARE(eVal, esock_atom_lowdelay) == 0) { + *val = IPTOS_LOWDELAY; + result = TRUE; + } else if (COMPARE(eVal, esock_atom_throughput) == 0) { + *val = IPTOS_THROUGHPUT; + result = TRUE; + } else if (COMPARE(eVal, esock_atom_reliability) == 0) { + *val = IPTOS_RELIABILITY; + result = TRUE; +#if defined(IPTOS_MINCOST) + } else if (COMPARE(eVal, esock_atom_mincost) == 0) { + *val = IPTOS_MINCOST; + result = TRUE; +#endif + } else { + *val = -1; + result = FALSE; + } + + } else if (IS_NUM(env, eVal)) { + + if (GET_INT(env, eVal, val)) { + result = TRUE; + } else { + *val = -1; + result = FALSE; + } + + } else { + *val = -1; + result = FALSE; + } + + return result; +} +#endif + + + +/* +++ decode the ip socket option MTU_DISCOVER +++ + * The (ip) option can be provide in two ways: + * + * atom() | integer() + * + * When its an atom it can have the values: + * + * want | dont | do | probe + * + */ +#if defined(IP_MTU_DISCOVER) +static +char* decode_ip_pmtudisc(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val) +{ + char* res = NULL; + + if (IS_ATOM(env, eVal)) { + + if (COMPARE(eVal, atom_want) == 0) { + *val = IP_PMTUDISC_WANT; + } else if (COMPARE(eVal, atom_dont) == 0) { + *val = IP_PMTUDISC_DONT; + } else if (COMPARE(eVal, atom_do) == 0) { + *val = IP_PMTUDISC_DO; +#if defined(IP_PMTUDISC_PROBE) + } else if (COMPARE(eVal, atom_probe) == 0) { + *val = IP_PMTUDISC_PROBE; +#endif + } else { + *val = -1; + res = ESOCK_STR_EINVAL; + } + + } else if (IS_NUM(env, eVal)) { + + if (!GET_INT(env, eVal, val)) { + *val = -1; + res = ESOCK_STR_EINVAL; + } + + } else { + + *val = -1; + res = ESOCK_STR_EINVAL; + + } + + return res; +} +#endif + + + +/* +++ decode the ipv6 socket option MTU_DISCOVER +++ + * The (ip) option can be provide in two ways: + * + * atom() | integer() + * + * When its an atom it can have the values: + * + * want | dont | do | probe + * + */ +#if defined(IPV6_MTU_DISCOVER) +static +char* decode_ipv6_pmtudisc(ErlNifEnv* env, ERL_NIF_TERM eVal, int* val) +{ + char* res = NULL; + + if (IS_ATOM(env, eVal)) { + + if (COMPARE(eVal, atom_want) == 0) { + *val = IPV6_PMTUDISC_WANT; + } else if (COMPARE(eVal, atom_dont) == 0) { + *val = IPV6_PMTUDISC_DONT; + } else if (COMPARE(eVal, atom_do) == 0) { + *val = IPV6_PMTUDISC_DO; +#if defined(IPV6_PMTUDISC_PROBE) + } else if (COMPARE(eVal, atom_probe) == 0) { + *val = IPV6_PMTUDISC_PROBE; +#endif + } else { + *val = -1; + res = ESOCK_STR_EINVAL; + } + + } else if (IS_NUM(env, eVal)) { + + if (!GET_INT(env, eVal, val)) { + *val = -1; + res = ESOCK_STR_EINVAL; + } + + } else { + + *val = -1; + res = ESOCK_STR_EINVAL; + + } + + return res; +} +#endif + + + +/* +++ encode the ip socket option MTU_DISCOVER +++ + * The (ip) option can be provide in two ways: + * + * atom() | integer() + * + * If its one of the "known" values, it will be an atom: + * + * want | dont | do | probe + * + */ +#if defined(IP_MTU_DISCOVER) +static +void encode_ip_pmtudisc(ErlNifEnv* env, int val, ERL_NIF_TERM* eVal) +{ + switch (val) { + case IP_PMTUDISC_WANT: + *eVal = atom_want; + break; + + case IP_PMTUDISC_DONT: + *eVal = atom_dont; + break; + + case IP_PMTUDISC_DO: + *eVal = atom_do; + break; + +#if defined(IP_PMTUDISC_PROBE) + case IP_PMTUDISC_PROBE: + *eVal = atom_probe; + break; +#endif + + default: + *eVal = MKI(env, val); + break; + } + + return; +} +#endif + + + +/* +++ encode the ipv6 socket option MTU_DISCOVER +++ + * The (ipv6) option can be provide in two ways: + * + * atom() | integer() + * + * If its one of the "known" values, it will be an atom: + * + * want | dont | do | probe + * + */ +#if defined(IPV6_MTU_DISCOVER) +static +void encode_ipv6_pmtudisc(ErlNifEnv* env, int val, ERL_NIF_TERM* eVal) +{ + switch (val) { + case IPV6_PMTUDISC_WANT: + *eVal = atom_want; + break; + + case IPV6_PMTUDISC_DONT: + *eVal = atom_dont; + break; + + case IPV6_PMTUDISC_DO: + *eVal = atom_do; + break; + +#if defined(IPV6_PMTUDISC_PROBE) + case IPV6_PMTUDISC_PROBE: + *eVal = atom_probe; + break; +#endif + + default: + *eVal = MKI(env, val); + break; + } + + return; +} +#endif + + + +/* +++ decocde the native getopt option +++ + * The option is in this case provide in the form of a two tuple: + * + * {NativeOpt, ValueSize} + * + * NativeOpt :: integer() + * ValueSize :: int | bool | non_neg_integer() + * + */ +static +BOOLEAN_T decode_native_get_opt(ErlNifEnv* env, ERL_NIF_TERM eVal, + int* opt, Uint16* valueType, int* valueSz) +{ + const ERL_NIF_TERM* nativeOptT; + int nativeOptTSz; + + /* First, get the tuple and verify its size (2) */ + + if (!GET_TUPLE(env, eVal, &nativeOptTSz, &nativeOptT)) + return FALSE; + + if (nativeOptTSz != 2) + return FALSE; + + /* So far so good. + * First element is an integer. + * Second element is an atom or an integer. + * The only "types" that we support at the moment are: + * + * bool - Which is actually a integer + * (but will be *returned* as a boolean()) + * int - Just short for integer + */ + + if (!GET_INT(env, nativeOptT[0], opt)) + return FALSE; + + if (IS_ATOM(env, nativeOptT[1])) { + + if (COMPARE(nativeOptT[1], atom_int) == 0) { + SGDBG( ("SOCKET", "decode_native_get_opt -> int\r\n") ); + *valueType = SOCKET_OPT_VALUE_TYPE_INT; + *valueSz = sizeof(int); // Just to be sure + } else if (COMPARE(nativeOptT[1], atom_bool) == 0) { + SGDBG( ("SOCKET", "decode_native_get_opt -> bool\r\n") ); + *valueType = SOCKET_OPT_VALUE_TYPE_BOOL; + *valueSz = sizeof(int); // Just to be sure + } else { + return FALSE; + } + } else if (IS_NUM(env, nativeOptT[1])) { + if (GET_INT(env, nativeOptT[1], valueSz)) { + SGDBG( ("SOCKET", "decode_native_get_opt -> unspec\r\n") ); + *valueType = SOCKET_OPT_VALUE_TYPE_UNSPEC; + } else { + return FALSE; + } + } else { + return FALSE; + } + + SGDBG( ("SOCKET", "decode_native_get_opt -> done\r\n") ); + + return TRUE; +} + + + +/* +++ encode the ip socket option tos +++ + * The (ip) option can be provide as: + * + * lowdelay | throughput | reliability | mincost | integer() + * + */ +static +ERL_NIF_TERM encode_ip_tos(ErlNifEnv* env, int val) +{ + ERL_NIF_TERM result; + + switch (IPTOS_TOS(val)) { + case IPTOS_LOWDELAY: + result = esock_make_ok2(env, esock_atom_lowdelay); + break; + + case IPTOS_THROUGHPUT: + result = esock_make_ok2(env, esock_atom_throughput); + break; + + case IPTOS_RELIABILITY: + result = esock_make_ok2(env, esock_atom_reliability); + break; + +#if defined(IPTOS_MINCOST) + case IPTOS_MINCOST: + result = esock_make_ok2(env, esock_atom_mincost); + break; +#endif + + default: + result = esock_make_ok2(env, MKI(env, val)); + break; + } + + return result; +} + + + + + +/* *** alloc_descriptor *** + * Allocate and perform basic initialization of a socket descriptor. + * + */ +static +SocketDescriptor* alloc_descriptor(SOCKET sock, HANDLE event) +{ + SocketDescriptor* descP; + + if ((descP = enif_alloc_resource(sockets, sizeof(SocketDescriptor))) != NULL) { + char buf[64]; /* Buffer used for building the mutex name */ + + // This needs to be released when the socket is closed! + descP->env = enif_alloc_env(); + + sprintf(buf, "socket[w,%d]", sock); + descP->writeMtx = MCREATE(buf); + descP->currentWriterP = NULL; // currentWriter not used + descP->writersQ.first = NULL; + descP->writersQ.last = NULL; + descP->isWritable = FALSE; // TRUE; + descP->writePkgCnt = 0; + descP->writeByteCnt = 0; + descP->writeTries = 0; + descP->writeWaits = 0; + descP->writeFails = 0; + + sprintf(buf, "socket[r,%d]", sock); + descP->readMtx = MCREATE(buf); + descP->currentReaderP = NULL; // currentReader not used + descP->readersQ.first = NULL; + descP->readersQ.last = NULL; + descP->isReadable = FALSE; // TRUE; + descP->readPkgCnt = 0; + descP->readByteCnt = 0; + descP->readTries = 0; + descP->readWaits = 0; + + sprintf(buf, "socket[acc,%d]", sock); + descP->accMtx = MCREATE(buf); + descP->currentAcceptorP = NULL; // currentAcceptor not used + descP->acceptorsQ.first = NULL; + descP->acceptorsQ.last = NULL; + + sprintf(buf, "socket[close,%d]", sock); + descP->closeMtx = MCREATE(buf); + descP->closeEnv = NULL; + descP->closeRef = esock_atom_undefined; + + descP->rBufSz = SOCKET_RECV_BUFFER_SIZE_DEFAULT; + descP->rNum = 0; + descP->rNumCnt = 0; + descP->rCtrlSz = SOCKET_RECV_CTRL_BUFFER_SIZE_DEFAULT; + descP->wCtrlSz = SOCKET_SEND_CTRL_BUFFER_SIZE_DEFAULT; + descP->iow = FALSE; + descP->dbg = SOCKET_DEBUG_DEFAULT; + + descP->sock = sock; + descP->event = event; + + MON_INIT(&descP->currentWriter.mon); + MON_INIT(&descP->currentReader.mon); + MON_INIT(&descP->currentAcceptor.mon); + MON_INIT(&descP->ctrlMon); + MON_INIT(&descP->closerMon); + } + + return descP; +} + + + +/* decrement counters for when a socket is closed */ +static +void dec_socket(int domain, int type, int protocol) +{ + MLOCK(data.cntMtx); + + cnt_dec(&data.numSockets, 1); + + if (domain == AF_INET) + cnt_dec(&data.numDomainInet, 1); +#if defined(HAVE_IN6) && defined(AF_INET6) + else if (domain == AF_INET6) + cnt_dec(&data.numDomainInet6, 1); +#endif +#if defined(HAVE_SYS_UN_H) + else if (domain == AF_UNIX) + cnt_dec(&data.numDomainInet6, 1); +#endif + + if (type == SOCK_STREAM) + cnt_dec(&data.numTypeStreams, 1); + else if (type == SOCK_DGRAM) + cnt_dec(&data.numTypeDGrams, 1); +#ifdef HAVE_SCTP + else if (type == SOCK_SEQPACKET) + cnt_dec(&data.numTypeSeqPkgs, 1); +#endif + + if (protocol == IPPROTO_IP) + cnt_dec(&data.numProtoIP, 1); + else if (protocol == IPPROTO_TCP) + cnt_dec(&data.numProtoTCP, 1); + else if (protocol == IPPROTO_UDP) + cnt_dec(&data.numProtoUDP, 1); +#if defined(HAVE_SCTP) + else if (protocol == IPPROTO_SCTP) + cnt_dec(&data.numProtoSCTP, 1); +#endif + + MUNLOCK(data.cntMtx); +} + + +/* increment counters for when a socket is opened */ +static +void inc_socket(int domain, int type, int protocol) +{ + MLOCK(data.cntMtx); + + cnt_inc(&data.numSockets, 1); + + if (domain == AF_INET) + cnt_inc(&data.numDomainInet, 1); +#if defined(HAVE_IN6) && defined(AF_INET6) + else if (domain == AF_INET6) + cnt_inc(&data.numDomainInet6, 1); +#endif +#if defined(HAVE_SYS_UN_H) + else if (domain == AF_UNIX) + cnt_inc(&data.numDomainInet6, 1); +#endif + + if (type == SOCK_STREAM) + cnt_inc(&data.numTypeStreams, 1); + else if (type == SOCK_DGRAM) + cnt_inc(&data.numTypeDGrams, 1); +#ifdef HAVE_SCTP + else if (type == SOCK_SEQPACKET) + cnt_inc(&data.numTypeSeqPkgs, 1); +#endif + + if (protocol == IPPROTO_IP) + cnt_inc(&data.numProtoIP, 1); + else if (protocol == IPPROTO_TCP) + cnt_inc(&data.numProtoTCP, 1); + else if (protocol == IPPROTO_UDP) + cnt_inc(&data.numProtoUDP, 1); +#if defined(HAVE_SCTP) + else if (protocol == IPPROTO_SCTP) + cnt_inc(&data.numProtoSCTP, 1); +#endif + + MUNLOCK(data.cntMtx); +} + + + +/* compare_pids - Test if two pids are equal + * + */ +static +int compare_pids(ErlNifEnv* env, + const ErlNifPid* pid1, + const ErlNifPid* pid2) +{ + ERL_NIF_TERM p1 = enif_make_pid(env, pid1); + ERL_NIF_TERM p2 = enif_make_pid(env, pid2); + + return enif_is_identical(p1, p2); +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * D e c o d e / E n c o d e F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +/* edomain2domain - convert internal (erlang) domain to (proper) domain + * + * Note that only a subset is supported. + */ +#if !defined(__WIN32__) +static +BOOLEAN_T edomain2domain(int edomain, int* domain) +{ + switch (edomain) { + case SOCKET_DOMAIN_INET: + *domain = AF_INET; + break; + +#if defined(HAVE_IN6) && defined(AF_INET6) + case SOCKET_DOMAIN_INET6: + *domain = AF_INET6; + break; +#endif +#ifdef HAVE_SYS_UN_H + case SOCKET_DOMAIN_LOCAL: + *domain = AF_UNIX; + break; +#endif + + default: + *domain = -1; + return FALSE; + } + + return TRUE; +} + + +/* etype2type - convert internal (erlang) type to (proper) type + * + * Note that only a subset is supported. + */ +static +BOOLEAN_T etype2type(int etype, int* type) +{ + switch (etype) { + case SOCKET_TYPE_STREAM: + *type = SOCK_STREAM; + break; + + case SOCKET_TYPE_DGRAM: + *type = SOCK_DGRAM; + break; + + case SOCKET_TYPE_RAW: + *type = SOCK_RAW; + break; + +#ifdef HAVE_SCTP + case SOCKET_TYPE_SEQPACKET: + *type = SOCK_SEQPACKET; + break; +#endif + + default: + *type = -1; + return FALSE; + } + + return TRUE; +} + + +/* eproto2proto - convert internal (erlang) protocol to (proper) protocol + * + * Note that only a subset is supported. + */ +static +BOOLEAN_T eproto2proto(ErlNifEnv* env, + ERL_NIF_TERM eproto, + int* proto) +{ + if (IS_NUM(env, eproto)) { + int ep; + + if (!GET_INT(env, eproto, &ep)) { + *proto = -1; + return FALSE; + } + + switch (ep) { + case SOCKET_PROTOCOL_IP: + *proto = IPPROTO_IP; + break; + + case SOCKET_PROTOCOL_TCP: + *proto = IPPROTO_TCP; + break; + + case SOCKET_PROTOCOL_UDP: + *proto = IPPROTO_UDP; + break; + +#if defined(HAVE_SCTP) + case SOCKET_PROTOCOL_SCTP: + *proto = IPPROTO_SCTP; + break; +#endif + + case SOCKET_PROTOCOL_ICMP: + *proto = IPPROTO_ICMP; + break; + + case SOCKET_PROTOCOL_IGMP: + *proto = IPPROTO_IGMP; + break; + + default: + *proto = -2; + return FALSE; + } + } else { + const ERL_NIF_TERM* a; + int sz; + + if (!GET_TUPLE(env, eproto, &sz, &a)) { + *proto = -3; + return FALSE; + } + + if (sz != 2) { + *proto = -4; + return FALSE; + } + + if (COMPARE(a[0], esock_atom_raw) != 0) { + *proto = -5; + return FALSE; + } + + if (!GET_INT(env, a[1], proto)) { + *proto = -6; + return FALSE; + } + } + + return TRUE; +} + + +#ifdef HAVE_SETNS + /* emap2netns - extract the netns field from the extra map + * + * Note that currently we only support one extra option, the netns. + */ +static +BOOLEAN_T emap2netns(ErlNifEnv* env, ERL_NIF_TERM map, char** netns) +{ + size_t sz; + ERL_NIF_TERM key; + ERL_NIF_TERM value; + unsigned int len; + char* buf; + int written; + + /* Note that its acceptable that the extra map is empty */ + if (!enif_get_map_size(env, map, &sz) || + (sz != 1)) { + *netns = NULL; + return TRUE; + } + + /* The currently only supported extra option is: netns */ + key = enif_make_atom(env, "netns"); + if (!GET_MAP_VAL(env, map, key, &value)) { + *netns = NULL; // Just in case... + return FALSE; + } + + /* So far so good. The value should be a string, check. */ + if (!enif_is_list(env, value)) { + *netns = NULL; // Just in case... + return FALSE; + } + + if (!enif_get_list_length(env, value, &len)) { + *netns = NULL; // Just in case... + return FALSE; + } + + if ((buf = MALLOC(len+1)) == NULL) { + *netns = NULL; // Just in case... + return FALSE; + } + + written = enif_get_string(env, value, buf, len+1, ERL_NIF_LATIN1); + if (written == (len+1)) { + *netns = buf; + return TRUE; + } else { + *netns = NULL; // Just in case... + return FALSE; + } +} +#endif + + +/* esendflags2sendflags - convert internal (erlang) send flags to (proper) + * send flags. + */ +static +BOOLEAN_T esendflags2sendflags(unsigned int eflags, int* flags) +{ + unsigned int ef; + int tmp = 0; + + /* First, check if we have any flags at all */ + if (eflags == 0) { + *flags = 0; + return TRUE; + } + + for (ef = SOCKET_SEND_FLAG_LOW; ef <= SOCKET_SEND_FLAG_HIGH; ef++) { + + switch (ef) { +#if defined(MSG_CONFIRM) + case SOCKET_SEND_FLAG_CONFIRM: + if ((1 << SOCKET_SEND_FLAG_CONFIRM) & eflags) + tmp |= MSG_CONFIRM; + break; +#endif + +#if defined(MSG_DONTROUTE) + case SOCKET_SEND_FLAG_DONTROUTE: + if ((1 << SOCKET_SEND_FLAG_DONTROUTE) & eflags) + tmp |= MSG_DONTROUTE; + break; +#endif + +#if defined(MSG_EOR) + case SOCKET_SEND_FLAG_EOR: + if ((1 << SOCKET_SEND_FLAG_EOR) & eflags) + tmp |= MSG_EOR; + break; +#endif + +#if defined(MSG_MORE) + case SOCKET_SEND_FLAG_MORE: + if ((1 << SOCKET_SEND_FLAG_MORE) & eflags) + tmp |= MSG_MORE; + break; +#endif + +#if defined(MSG_NOSIGNAL) + case SOCKET_SEND_FLAG_NOSIGNAL: + if ((1 << SOCKET_SEND_FLAG_NOSIGNAL) & eflags) + tmp |= MSG_NOSIGNAL; + break; +#endif + +#if defined(MSG_OOB) + case SOCKET_SEND_FLAG_OOB: + if ((1 << SOCKET_SEND_FLAG_OOB) & eflags) + tmp |= MSG_OOB; + break; +#endif + + default: + return FALSE; + } + + } + + *flags = tmp; + + return TRUE; +} + + + +/* erecvflags2recvflags - convert internal (erlang) send flags to (proper) + * send flags. + */ +static +BOOLEAN_T erecvflags2recvflags(unsigned int eflags, int* flags) +{ + unsigned int ef; + int tmp = 0; + + SGDBG( ("SOCKET", "erecvflags2recvflags -> entry with" + "\r\n eflags: %d" + "\r\n", eflags) ); + + if (eflags == 0) { + *flags = 0; + return TRUE; + } + + for (ef = SOCKET_RECV_FLAG_LOW; ef <= SOCKET_RECV_FLAG_HIGH; ef++) { + + SGDBG( ("SOCKET", "erecvflags2recvflags -> iteration" + "\r\n ef: %d" + "\r\n tmp: %d" + "\r\n", ef, tmp) ); + + switch (ef) { +#if defined(MSG_CMSG_CLOEXEC) + case SOCKET_RECV_FLAG_CMSG_CLOEXEC: + if ((1 << SOCKET_RECV_FLAG_CMSG_CLOEXEC) & eflags) + tmp |= MSG_CMSG_CLOEXEC; + break; +#endif + +#if defined(MSG_ERRQUEUE) + case SOCKET_RECV_FLAG_ERRQUEUE: + if ((1 << SOCKET_RECV_FLAG_ERRQUEUE) & eflags) + tmp |= MSG_ERRQUEUE; + break; +#endif + +#if defined(MSG_OOB) + case SOCKET_RECV_FLAG_OOB: + if ((1 << SOCKET_RECV_FLAG_OOB) & eflags) + tmp |= MSG_OOB; + break; +#endif + + /* + * <KOLLA> + * + * We need to handle this, because it may effect the read algorithm + * + * </KOLLA> + */ +#if defined(MSG_PEEK) + case SOCKET_RECV_FLAG_PEEK: + if ((1 << SOCKET_RECV_FLAG_PEEK) & eflags) + tmp |= MSG_PEEK; + break; +#endif + +#if defined(MSG_TRUNC) + case SOCKET_RECV_FLAG_TRUNC: + if ((1 << SOCKET_RECV_FLAG_TRUNC) & eflags) + tmp |= MSG_TRUNC; + break; +#endif + + default: + return FALSE; + } + + } + + *flags = tmp; + + return TRUE; +} + + + +/* eproto2proto - convert internal (erlang) protocol to (proper) protocol + * + * Note that only a subset is supported. + */ +static +BOOLEAN_T ehow2how(unsigned int ehow, int* how) +{ + switch (ehow) { + case SOCKET_SHUTDOWN_HOW_RD: + *how = SHUT_RD; + break; + + case SOCKET_SHUTDOWN_HOW_WR: + *how = SHUT_WR; + break; + + case SOCKET_SHUTDOWN_HOW_RDWR: + *how = SHUT_RDWR; + break; + + default: + return FALSE; + } + + return TRUE; +} + + + +#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE) +/* strnlen doesn't exist everywhere */ +/* +static +size_t my_strnlen(const char *s, size_t maxlen) +{ + size_t i = 0; + while (i < maxlen && s[i] != '\0') + i++; + return i; +} +*/ +#endif + + +/* Send an error closed message to the specified process: + * + * This message is for processes that are waiting in the + * erlang API functions for a select message. + */ +/* +static +char* send_msg_error_closed(ErlNifEnv* env, + ErlNifPid* pid) +{ + return send_msg_error(env, atom_closed, pid); +} +*/ + +/* Send an error message to the specified process: + * A message in the form: + * + * {error, Reason} + * + * This message is for processes that are waiting in the + * erlang API functions for a select message. + */ +/* +static +char* send_msg_error(ErlNifEnv* env, + ERL_NIF_TERM reason, + ErlNifPid* pid) +{ + ERL_NIF_TERM msg = enif_make_tuple2(env, atom_error, reason); + + return send_msg(env, msg, pid); +} +*/ + + +/* Send an close message to the specified process: + * A message in the form: + * + * {'$socket', SockRef, close, CloseRef} + * + * This message is for processes that is waiting in the + * erlang API (close-) function for the socket to be "closed" + * (actually that the 'stop' callback function has been called). + */ +static +char* esock_send_close_msg(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM sockRef = enif_make_resource(descP->closeEnv, descP); + char* res = esock_send_socket_msg(env, + sockRef, + esock_atom_close, + descP->closeRef, + &descP->closerPid, + descP->closeEnv); + + descP->closeEnv = NULL; + + return res; +} + + +/* Send an abort message to the specified process: + * A message in the form: + * + * {'$socket', SockRef, abort, {RecvRef, Reason}} + * + * This message is for processes that is waiting in the + * erlang API functions for a select message. + */ +static +char* esock_send_abort_msg(ErlNifEnv* env, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM recvRef, + ERL_NIF_TERM reason, + ErlNifPid* pid) +{ + ErlNifEnv* msg_env = enif_alloc_env(); + ERL_NIF_TERM info = MKT2(msg_env, + enif_make_copy(msg_env, recvRef), + enif_make_copy(msg_env, reason)); + + return esock_send_socket_msg(env, sockRef, esock_atom_abort, info, pid, + msg_env); +} + + +/* *** esock_send_socket_msg *** + * + * This function sends a general purpose socket message to an erlang + * process. A general 'socket' message has the ("erlang") form: + * + * {'$socket', SockRef, Tag, Info} + * + * Where + * + * SockRef: reference() + * Tag: atom() + * Info: term() + * + */ + +static +char* esock_send_socket_msg(ErlNifEnv* env, + ERL_NIF_TERM sockRef, + ERL_NIF_TERM tag, + ERL_NIF_TERM info, + ErlNifPid* pid, + ErlNifEnv* msg_env) +{ + ERL_NIF_TERM msg; + if (!msg_env) { + msg_env = enif_alloc_env(); + sockRef = enif_make_copy(msg_env, sockRef); + tag = enif_make_copy(msg_env, tag); + info = enif_make_copy(msg_env, info); + } + msg = MKT4(msg_env, esock_atom_socket_tag, sockRef, tag, info); + + return esock_send_msg(env, msg, pid, msg_env); +} + + +/* Send a message to the specified process. + */ +static +char* esock_send_msg(ErlNifEnv* env, + ERL_NIF_TERM msg, + ErlNifPid* pid, + ErlNifEnv* msg_env) +{ + int res = enif_send(env, pid, msg_env, msg); + if (msg_env) + enif_free_env(msg_env); + + if (!res) + return str_exsend; + else + return NULL; +} +#endif // #if defined(__WIN32__) + + +/* ---------------------------------------------------------------------- + * S e l e c t W r a p p e r F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +static +int esock_select_read(ErlNifEnv* env, + ErlNifEvent event, + void* obj, + const ErlNifPid* pid, + ERL_NIF_TERM ref) +{ + return enif_select(env, event, (ERL_NIF_SELECT_READ), obj, pid, ref); +} + + +static +int esock_select_write(ErlNifEnv* env, + ErlNifEvent event, + void* obj, + const ErlNifPid* pid, + ERL_NIF_TERM ref) +{ + return enif_select(env, event, (ERL_NIF_SELECT_WRITE), obj, pid, ref); +} + + +static +int esock_select_stop(ErlNifEnv* env, + ErlNifEvent event, + void* obj) +{ + return enif_select(env, event, (ERL_NIF_SELECT_STOP), obj, NULL, + esock_atom_undefined); +} + +static +int esock_select_cancel(ErlNifEnv* env, + ErlNifEvent event, + enum ErlNifSelectFlags mode, + void* obj) +{ + return enif_select(env, event, (ERL_NIF_SELECT_CANCEL | mode), obj, NULL, + esock_atom_undefined); +} + + +/* ---------------------------------------------------------------------- + * R e q u e s t Q u e u e F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +/* *** acceptor search for pid *** + * + * Search for a pid in the acceptor queue. + */ +#if !defined(__WIN32__) +static +BOOLEAN_T acceptor_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid) +{ + return qsearch4pid(env, &descP->acceptorsQ, pid); +} + + +/* *** acceptor push *** + * + * Push an acceptor onto the acceptor queue. + * This happens when we already have atleast one current acceptor. + */ +static +ERL_NIF_TERM acceptor_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref) +{ + SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement)); + SocketRequestor* reqP = &e->data; + + reqP->pid = pid; + reqP->ref = enif_make_copy(descP->env, ref); + + if (MONP("acceptor_push -> acceptor request", + env, descP, &pid, &reqP->mon) != 0) { + FREE(reqP); + return esock_make_error(env, atom_exmon); + } + + qpush(&descP->acceptorsQ, e); + + // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN + return esock_make_error(env, esock_atom_eagain); +} + + +/* *** acceptor pop *** + * + * Pop an acceptor from the acceptor queue. + */ +static +BOOLEAN_T acceptor_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref) +{ + SocketRequestQueueElement* e = qpop(&descP->acceptorsQ); + + if (e != NULL) { + *pid = e->data.pid; + *mon = e->data.mon; + *ref = e->data.ref; + FREE(e); + return TRUE; + } else { + /* (acceptors) Queue was empty */ + // *pid = NULL; we have no null value for pids + // *mon = NULL; we have no null value for monitors + *ref = esock_atom_undefined; // Just in case + return FALSE; + } + +} + + +/* *** acceptor unqueue *** + * + * Remove an acceptor from the acceptor queue. + */ +static +BOOLEAN_T acceptor_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + return qunqueue(env, descP, "qunqueue -> waiting acceptor", + &descP->acceptorsQ, pid); +} + + + +/* *** writer search for pid *** + * + * Search for a pid in the writer queue. + */ +static +BOOLEAN_T writer_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid) +{ + return qsearch4pid(env, &descP->writersQ, pid); +} + + +/* *** writer push *** + * + * Push an writer onto the writer queue. + * This happens when we already have atleast one current writer. + */ +static +ERL_NIF_TERM writer_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref) +{ + SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement)); + SocketRequestor* reqP = &e->data; + + reqP->pid = pid; + reqP->ref = enif_make_copy(descP->env, ref); + + if (MONP("writer_push -> writer request", + env, descP, &pid, &reqP->mon) != 0) { + FREE(reqP); + return esock_make_error(env, atom_exmon); + } + + qpush(&descP->writersQ, e); + + // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN + return esock_make_error(env, esock_atom_eagain); +} + + +/* *** writer pop *** + * + * Pop an writer from the writer queue. + */ +static +BOOLEAN_T writer_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref) +{ + SocketRequestQueueElement* e = qpop(&descP->writersQ); + + if (e != NULL) { + *pid = e->data.pid; + *mon = e->data.mon; + *ref = e->data.ref; // At this point the ref has already been copied (env) + FREE(e); + return TRUE; + } else { + /* (writers) Queue was empty */ + // *pid = NULL; we have no null value for pids + // *mon = NULL; we have no null value for monitors + *ref = esock_atom_undefined; // Just in case + return FALSE; + } + +} + + +/* *** writer unqueue *** + * + * Remove an writer from the writer queue. + */ +static +BOOLEAN_T writer_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + return qunqueue(env, descP, "qunqueue -> waiting writer", + &descP->writersQ, pid); +} + + + +/* *** reader search for pid *** + * + * Search for a pid in the reader queue. + */ +static +BOOLEAN_T reader_search4pid(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid) +{ + return qsearch4pid(env, &descP->readersQ, pid); +} + + +/* *** reader push *** + * + * Push an reader onto the raeder queue. + * This happens when we already have atleast one current reader. + */ +static +ERL_NIF_TERM reader_push(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid pid, + ERL_NIF_TERM ref) +{ + SocketRequestQueueElement* e = MALLOC(sizeof(SocketRequestQueueElement)); + SocketRequestor* reqP = &e->data; + + reqP->pid = pid; + reqP->ref = enif_make_copy(descP->env, ref); + + if (MONP("reader_push -> reader request", + env, descP, &pid, &reqP->mon) != 0) { + FREE(reqP); + return esock_make_error(env, atom_exmon); + } + + qpush(&descP->readersQ, e); + + // THIS IS OK => MAKES THE CALLER WAIT FOR ITS TURN + return esock_make_error(env, esock_atom_eagain); +} + + +/* *** reader pop *** + * + * Pop an writer from the reader queue. + */ +static +BOOLEAN_T reader_pop(ErlNifEnv* env, + SocketDescriptor* descP, + ErlNifPid* pid, + // ErlNifMonitor* mon, + ESockMonitor* mon, + ERL_NIF_TERM* ref) +{ + SocketRequestQueueElement* e = qpop(&descP->readersQ); + + if (e != NULL) { + *pid = e->data.pid; + *mon = e->data.mon; + *ref = e->data.ref; // At this point the ref has already been copied (env) + FREE(e); + return TRUE; + } else { + /* (readers) Queue was empty */ + // *pid = NULL; we have no null value for pids + // *mon = NULL; we have no null value for monitors + *ref = esock_atom_undefined; // Just in case + return FALSE; + } + +} + + +/* *** reader unqueue *** + * + * Remove an reader from the reader queue. + */ +static +BOOLEAN_T reader_unqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + return qunqueue(env, descP, "qunqueue -> waiting reader", + &descP->readersQ, pid); +} + + + + + +static +BOOLEAN_T qsearch4pid(ErlNifEnv* env, + SocketRequestQueue* q, + ErlNifPid* pid) +{ + SocketRequestQueueElement* tmp = q->first; + + while (tmp != NULL) { + if (compare_pids(env, &tmp->data.pid, pid)) + return TRUE; + else + tmp = tmp->nextP; + } + + return FALSE; +} + + +static +void qpush(SocketRequestQueue* q, + SocketRequestQueueElement* e) +{ + if (q->first != NULL) { + q->last->nextP = e; + q->last = e; + e->nextP = NULL; + } else { + q->first = e; + q->last = e; + e->nextP = NULL; + } +} + + +static +SocketRequestQueueElement* qpop(SocketRequestQueue* q) +{ + SocketRequestQueueElement* e = q->first; + + if (e != NULL) { + /* Atleast one element in the queue */ + if (e == q->last) { + /* Only one element in the queue */ + q->first = q->last = NULL; + } else { + /* More than one element in the queue */ + q->first = e->nextP; + } + } + + return e; +} + + + +static +BOOLEAN_T qunqueue(ErlNifEnv* env, + SocketDescriptor* descP, + const char* slogan, + SocketRequestQueue* q, + const ErlNifPid* pid) +{ + SocketRequestQueueElement* e = q->first; + SocketRequestQueueElement* p = NULL; + + /* Check if it was one of the waiting acceptor processes */ + while (e != NULL) { + if (compare_pids(env, &e->data.pid, pid)) { + + /* We have a match */ + + DEMONP(slogan, env, descP, &e->data.mon); + + if (p != NULL) { + /* Not the first, but could be the last */ + if (q->last == e) { + q->last = p; + p->nextP = NULL; + } else { + p->nextP = e->nextP; + } + + } else { + /* The first and could also be the last */ + if (q->last == e) { + q->last = NULL; + q->first = NULL; + } else { + q->first = e->nextP; + } + } + + FREE(e); + + return TRUE; + } + + /* Try next */ + p = e; + e = e->nextP; + } + + return FALSE; +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * C o u n t e r F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +#if !defined(__WIN32__) +static +BOOLEAN_T cnt_inc(Uint32* cnt, Uint32 inc) +{ + BOOLEAN_T wrap; + Uint32 max = 0xFFFFFFFF; + Uint32 current = *cnt; + + if ((max - inc) >= current) { + *cnt += inc; + wrap = FALSE; + } else { + *cnt = inc - (max - current) - 1; + wrap = TRUE; + } + + return (wrap); +} + + +static +void cnt_dec(Uint32* cnt, Uint32 dec) +{ + Uint32 current = *cnt; + + if (dec > current) + *cnt = 0; // The counter cannot be < 0 so this is the best we can do... + else + *cnt -= dec; + + return; +} +#endif // if !defined(__WIN32__) + + + + +/* ---------------------------------------------------------------------- + * M o n i t o r W r a p p e r F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +#if !defined(__WIN32__) + +static +ERL_NIF_TERM my_make_monitor_term(ErlNifEnv* env, const ErlNifMonitor* mon) +{ + return ((ERL_NIF_TERM)&mon->data) + 2; +} + +static +int esock_monitor(const char* slogan, + ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid, + ESockMonitor* monP) +{ + int res; + + SSDBG( descP, ("SOCKET", "[%d] %s: try monitor\r\n", descP->sock, slogan) ); + res = enif_monitor_process(env, descP, pid, &monP->mon); + + if (res != 0) { + monP->is_active = 0; + SSDBG( descP, ("SOCKET", "[%d] monitor failed: %d\r\n", descP->sock, res) ); + } else { + monP->is_active = 1; + } + + return res; +} + + +static +int esock_demonitor(const char* slogan, + ErlNifEnv* env, + SocketDescriptor* descP, + ESockMonitor* monP) +{ + int res; + + if (!monP->is_active) + return 1; + + SSDBG( descP, ("SOCKET", "[%d] %s: try demonitor\r\n", descP->sock, slogan) ); + + res = enif_demonitor_process(env, descP, &monP->mon); + + if (res == 0) { + esock_monitor_init(monP); + } else { + SSDBG( descP, + ("SOCKET", "[%d] demonitor failed: %d\r\n", descP->sock, res) ); + } + + return res; +} + + +static +void esock_monitor_init(ESockMonitor* monP) +{ + monP->is_active = 0; +} + +#endif // if !defined(__WIN32__) + + +/* +static +int esock_monitor_compare(const ErlNifMonitor* mon1, + const ESockMonitor* mon2) +{ + return enif_compare_monitors(mon1, &mon2->mon); +} +*/ + + +/* ---------------------------------------------------------------------- + * C a l l b a c k F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +/* ========================================================================= + * socket_dtor - Callback function for resource destructor + * + */ +static +void socket_dtor(ErlNifEnv* env, void* obj) +{ +#if !defined(__WIN32__) + SocketDescriptor* descP = (SocketDescriptor*) obj; + + enif_clear_env(descP->env); + enif_free_env(descP->env); + descP->env = NULL; + + MDESTROY(descP->writeMtx); + MDESTROY(descP->readMtx); + MDESTROY(descP->accMtx); + MDESTROY(descP->closeMtx); +#endif +} + + +/* ========================================================================= + * socket_stop - Callback function for resource stop + * + * When the socket is stopped, we need to inform: + * + * * the controlling process + * * the current writer and any waiting writers + * * the current reader and any waiting readers + * * the current acceptor and any waiting acceptor + * + * Also, make sure no process gets the message twice + * (in case it is, for instance, both controlling process + * and a writer). + * + */ +static +void socket_stop(ErlNifEnv* env, void* obj, int fd, int is_direct_call) +{ +#if !defined(__WIN32__) + SocketDescriptor* descP = (SocketDescriptor*) obj; + ERL_NIF_TERM sockRef; + + SSDBG( descP, + ("SOCKET", "socket_stop -> entry when %s" + "\r\n sock: %d (%d)" + "\r\n", + ((is_direct_call) ? "called" : "scheduled"), descP->sock, fd) ); + + /* +++ Lock it down +++ */ + + MLOCK(descP->writeMtx); + MLOCK(descP->readMtx); + MLOCK(descP->accMtx); + if (!is_direct_call) MLOCK(descP->closeMtx); + + SSDBG( descP, ("SOCKET", "socket_stop -> " + "[%d, %T] all mutex(s) locked when counters:" + "\r\n writePkgCnt: %u" + "\r\n writeByteCnt: %u" + "\r\n writeTries: %u" + "\r\n writeWaits: %u" + "\r\n writeFails: %u" + "\r\n readPkgCnt: %u" + "\r\n readByteCnt: %u" + "\r\n readTries: %u" + "\r\n readWaits: %u" + "\r\n", + descP->sock, descP->ctrlPid, + descP->writePkgCnt, + descP->writeByteCnt, + descP->writeTries, + descP->writeWaits, + descP->writeFails, + descP->readPkgCnt, + descP->readByteCnt, + descP->readTries, + descP->readWaits) ); + + sockRef = enif_make_resource(env, descP), + descP->state = SOCKET_STATE_CLOSING; // Just in case...??? + descP->isReadable = FALSE; + descP->isWritable = FALSE; + + /* We should check that we actually have a monitor. + * This *should* be done with a "NULL" monitor value, + * which there currently is none... + * If we got here because the controlling process died, + * there is no point to demonitor. Also, we do not actually + * have a monitor in that case... + */ + DEMONP("socket_stop -> ctrl", env, descP, &descP->ctrlMon); + + + + /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * + * Check current and waiting Writers + * + * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + */ + + if (descP->currentWriterP != NULL) { + /* We have a (current) writer and *may* therefor also have + * writers waiting. + */ + + DEMONP("socket_stop -> current writer", + env, descP, &descP->currentWriter.mon); + + SSDBG( descP, ("SOCKET", "socket_stop -> handle current writer\r\n") ); + if (!compare_pids(env, + &descP->closerPid, + &descP->currentWriter.pid)) { + SSDBG( descP, ("SOCKET", "socket_stop -> " + "send abort message to current writer %T\r\n", + descP->currentWriter.pid) ); + if (esock_send_abort_msg(env, + sockRef, + descP->currentWriter.ref, + atom_closed, + &descP->currentWriter.pid) != NULL) { + /* Shall we really do this? + * This happens if the controlling process has been killed! + */ + esock_warning_msg("Failed sending abort (%T) message to " + "current writer %T\r\n", + descP->currentWriter.ref, + descP->currentWriter.pid); + } + } + + /* And also deal with the waiting writers (in the same way) */ + SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting writer(s)\r\n") ); + inform_waiting_procs(env, descP, &descP->writersQ, TRUE, atom_closed); + } + + + /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * + * Check current and waiting Readers + * + * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + */ + + if (descP->currentReaderP != NULL) { + + /* We have a (current) reader and *may* therefor also have + * readers waiting. + */ + + DEMONP("socket_stop -> current reader", + env, descP, &descP->currentReader.mon); + + SSDBG( descP, ("SOCKET", "socket_stop -> handle current reader\r\n") ); + if (!compare_pids(env, + &descP->closerPid, + &descP->currentReader.pid)) { + SSDBG( descP, ("SOCKET", "socket_stop -> " + "send abort message to current reader %T\r\n", + descP->currentReader.pid) ); + if (esock_send_abort_msg(env, + sockRef, + descP->currentReader.ref, + atom_closed, + &descP->currentReader.pid) != NULL) { + /* Shall we really do this? + * This happens if the controlling process has been killed! + */ + esock_warning_msg("Failed sending abort (%T) message to " + "current reader %T\r\n", + descP->currentReader.ref, + descP->currentReader.pid); + } + } + + /* And also deal with the waiting readers (in the same way) */ + SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting reader(s)\r\n") ); + inform_waiting_procs(env, descP, &descP->readersQ, TRUE, atom_closed); + } + + + + /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * + * Check current and waiting Acceptors + * + * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + */ + + if (descP->currentAcceptorP != NULL) { + /* We have a (current) acceptor and *may* therefor also have + * acceptors waiting. + */ + + DEMONP("socket_stop -> current acceptor", + env, descP, &descP->currentAcceptor.mon); + + SSDBG( descP, ("SOCKET", "socket_stop -> handle current acceptor\r\n") ); + if (!compare_pids(env, + &descP->closerPid, + &descP->currentAcceptor.pid)) { + SSDBG( descP, ("SOCKET", "socket_stop -> " + "send abort message to current acceptor %T\r\n", + descP->currentWriter.pid) ); + if (esock_send_abort_msg(env, + sockRef, + descP->currentAcceptor.ref, + atom_closed, + &descP->currentAcceptor.pid) != NULL) { + /* Shall we really do this? + * This happens if the controlling process has been killed! + */ + esock_warning_msg("Failed sending abort (%T) message to " + "current acceptor %T\r\n", + descP->currentAcceptor.ref, + descP->currentAcceptor.pid); + } + } + + /* And also deal with the waiting acceptors (in the same way) */ + SSDBG( descP, ("SOCKET", "socket_stop -> handle waiting acceptor(s)\r\n") ); + inform_waiting_procs(env, descP, &descP->acceptorsQ, TRUE, atom_closed); + } + + + + /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * + * Maybe inform waiting closer + * + * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + */ + + if (descP->sock != INVALID_SOCKET) { + + if (descP->closeLocal) { + if (!is_direct_call) { + + /* +++ send close message to the waiting process +++ */ + + esock_send_close_msg(env, descP); + + DEMONP("socket_stop -> closer", env, descP, &descP->closerMon); + + } else { + + /* We only need to explicitly free the environment here + * since the message send takes care of it if scheduled. + */ + + if (descP->closeEnv != NULL) enif_free_env(descP->closeEnv); + + } + } + } + + + SSDBG( descP, ("SOCKET", "socket_stop -> unlock all mutex(s)\r\n") ); + + if (!is_direct_call) MUNLOCK(descP->closeMtx); + MUNLOCK(descP->accMtx); + MUNLOCK(descP->readMtx); + MUNLOCK(descP->writeMtx); + + SSDBG( descP, + ("SOCKET", "socket_stop -> done (%d, %d)\r\n", descP->sock, fd) ); + +#endif // if !defined(__WIN32__) +} + + + +/* This function traverse the queue and sends the specified + * nif_abort message with the specified reason to each member, + * and if the 'free' argument is TRUE, the queue will be emptied. + */ +#if !defined(__WIN32__) +static +void inform_waiting_procs(ErlNifEnv* env, + SocketDescriptor* descP, + SocketRequestQueue* q, + BOOLEAN_T free, + ERL_NIF_TERM reason) +{ + SocketRequestQueueElement* currentP = q->first; + SocketRequestQueueElement* nextP; + + while (currentP != NULL) { + + /* <KOLLA> + * + * Should we inform anyone if we fail to demonitor? + * NOT SURE WHAT THAT WOULD REPRESENT AND IT IS NOT + * IMPORTANT IN *THIS* CASE, BUT ITS A FUNDAMENTAL OP... + * + * </KOLLA> + */ + + SSDBG( descP, + ("SOCKET", "inform_waiting_procs -> abort request %T (from %T)\r\n", + currentP->data.ref, currentP->data.pid) ); + + ESOCK_ASSERT( (NULL == esock_send_abort_msg(env, + esock_atom_undefined, + currentP->data.ref, + reason, + ¤tP->data.pid)) ); + + DEMONP("inform_waiting_procs -> current 'request'", + env, descP, ¤tP->data.mon); + nextP = currentP->nextP; + if (free) FREE(currentP); + currentP = nextP; + } + + if (free) { + q->first = NULL; + q->last = NULL; + } +} +#endif // if !defined(__WIN32__) + + +/* ========================================================================= + * socket_down - Callback function for resource down (monitored processes) + * + */ +static +void socket_down(ErlNifEnv* env, + void* obj, + const ErlNifPid* pid, + const ErlNifMonitor* mon) +{ +#if !defined(__WIN32__) + SocketDescriptor* descP = (SocketDescriptor*) obj; + int sres; + + SSDBG( descP, ("SOCKET", "socket_down -> entry with" + "\r\n sock: %d" + "\r\n pid: %T" + "\r\n Close: %s (%s)" + "\r\n", + descP->sock, *pid, + B2S(IS_CLOSED(descP)), + B2S(IS_CLOSING(descP))) ); + + if (!IS_CLOSED(descP)) { + + if (compare_pids(env, &descP->ctrlPid, pid)) { + + /* We don't bother with the queue cleanup here - + * we leave it to the stop callback function. + */ + + SSDBG( descP, + ("SOCKET", "socket_down -> controlling process exit\r\n") ); + + descP->state = SOCKET_STATE_CLOSING; + descP->closeLocal = TRUE; + descP->closerPid = *pid; + MON_INIT(&descP->closerMon); + + sres = esock_select_stop(env, descP->sock, descP); + + if (sres & ERL_NIF_SELECT_STOP_CALLED) { + + /* We are done - we can finalize (socket close) directly */ + SSDBG( descP, + ("SOCKET", + "socket_down -> [%d] stop called\r\n", descP->sock) ); + + dec_socket(descP->domain, descP->type, descP->protocol); + descP->state = SOCKET_STATE_CLOSED; + + /* And finally close the socket. + * Since we close the socket because of an exiting owner, + * we do not need to wait for buffers to sync (linger). + * If the owner wish to ensure the buffer are written, + * it should have closed the socket explicitly... + */ + if (sock_close(descP->sock) != 0) { + int save_errno = sock_errno(); + + esock_warning_msg("Failed closing socket for terminating " + "controlling process: " + "\r\n Controlling Process: %T" + "\r\n Descriptor: %d" + "\r\n Errno: %d" + "\r\n", pid, descP->sock, save_errno); + } + sock_close_event(descP->event); + + descP->sock = INVALID_SOCKET; + descP->event = INVALID_EVENT; + + descP->state = SOCKET_STATE_CLOSED; + + } else if (sres & ERL_NIF_SELECT_STOP_SCHEDULED) { + + /* The stop callback function has been *scheduled* which means + * that "should" wait for it to complete. But since we are in + * a callback (down) function, we cannot... + * So, we must close the socket + */ + SSDBG( descP, + ("SOCKET", + "socket_down -> [%d] stop scheduled\r\n", + descP->sock) ); + + dec_socket(descP->domain, descP->type, descP->protocol); + + /* And now what? We can't wait for the stop function here... + * So, we simply close it here and leave the rest of the "close" + * for later (when the stop function actually gets called... + */ + + if (sock_close(descP->sock) != 0) { + int save_errno = sock_errno(); + + esock_warning_msg("Failed closing socket for terminating " + "controlling process: " + "\r\n Controlling Process: %T" + "\r\n Descriptor: %d" + "\r\n Errno: %d" + "\r\n", pid, descP->sock, save_errno); + } + sock_close_event(descP->event); + + } else { + + esock_warning_msg("Failed selecting stop when handling down " + "of controlling process: " + "\r\n Select Res: %d" + "\r\n Controlling Process: %T" + "\r\n Descriptor: %d" + "\r\n Monitor: %T" + "\r\n", sres, pid, descP->sock, + my_make_monitor_term(env, mon)); + } + + } else { + + /* check all operation queue(s): acceptor, writer and reader. + * + * Is it really any point in doing this if the socket is closed? + * + */ + + SSDBG( descP, ("SOCKET", "socket_down -> other process term\r\n") ); + + MLOCK(descP->accMtx); + if (descP->currentAcceptorP != NULL) + socket_down_acceptor(env, descP, pid); + MUNLOCK(descP->accMtx); + + MLOCK(descP->writeMtx); + if (descP->currentWriterP != NULL) + socket_down_writer(env, descP, pid); + MUNLOCK(descP->writeMtx); + + MLOCK(descP->readMtx); + if (descP->currentReaderP != NULL) + socket_down_reader(env, descP, pid); + MUNLOCK(descP->readMtx); + + } + } + + SSDBG( descP, ("SOCKET", "socket_down -> done\r\n") ); + +#endif // if !defined(__WIN32__) +} + + + +/* *** socket_down_acceptor *** + * + * Check and then handle a downed acceptor process. + * + */ +#if !defined(__WIN32__) +static +void socket_down_acceptor(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + if (compare_pids(env, &descP->currentAcceptor.pid, pid)) { + + SSDBG( descP, ("SOCKET", + "socket_down_acceptor -> " + "current acceptor - try pop the queue\r\n") ); + + if (acceptor_pop(env, descP, + &descP->currentAcceptor.pid, + &descP->currentAcceptor.mon, + &descP->currentAcceptor.ref)) { + int res; + + /* There was another one, so we will still be in accepting state */ + + SSDBG( descP, ("SOCKET", + "socket_down_acceptor -> new (active) acceptor: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentAcceptor.pid, + descP->currentAcceptor.ref) ); + + if ((res = esock_select_read(env, descP->sock, descP, + &descP->currentAcceptor.pid, + descP->currentAcceptor.ref) < 0)) { + + esock_warning_msg("Failed select (%d) for new acceptor " + "after current (%T) died\r\n", + res, *pid); + + } + + } else { + + SSDBG( descP, ("SOCKET", + "socket_down_acceptor -> no active acceptor\r\n") ); + + descP->currentAcceptorP = NULL; + descP->state = SOCKET_STATE_LISTENING; + } + + } else { + + /* Maybe unqueue one of the waiting acceptors */ + + SSDBG( descP, ("SOCKET", + "socket_down_acceptor -> " + "not current acceptor - maybe a waiting acceptor\r\n") ); + + acceptor_unqueue(env, descP, pid); + } +} + + + + +/* *** socket_down_writer *** + * + * Check and then handle a downed writer process. + * + */ +static +void socket_down_writer(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + if (compare_pids(env, &descP->currentWriter.pid, pid)) { + + SSDBG( descP, ("SOCKET", + "socket_down_writer -> " + "current writer - try pop the queue\r\n") ); + + if (writer_pop(env, descP, + &descP->currentWriter.pid, + &descP->currentWriter.mon, + &descP->currentWriter.ref)) { + int res; + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "socket_down_writer -> new (current) writer: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentWriter.pid, + descP->currentWriter.ref) ); + + if ((res = esock_select_write(env, descP->sock, descP, + &descP->currentWriter.pid, + descP->currentWriter.ref) < 0)) { + + esock_warning_msg("Failed select (%d) for new writer " + "after current (%T) died\r\n", + res, *pid); + + } + + } else { + + SSDBG( descP, ("SOCKET", + "socket_down_writer -> no active writer\r\n") ); + + descP->currentWriterP = NULL; + } + + } else { + + /* Maybe unqueue one of the waiting writer(s) */ + + SSDBG( descP, ("SOCKET", + "socket_down_writer -> " + "not current writer - maybe a waiting writer\r\n") ); + + writer_unqueue(env, descP, pid); + } +} + + + + +/* *** socket_down_reader *** + * + * Check and then handle a downed reader process. + * + */ +static +void socket_down_reader(ErlNifEnv* env, + SocketDescriptor* descP, + const ErlNifPid* pid) +{ + if (compare_pids(env, &descP->currentReader.pid, pid)) { + + SSDBG( descP, ("SOCKET", + "socket_down_reader -> " + "current reader - try pop the queue\r\n") ); + + if (reader_pop(env, descP, + &descP->currentReader.pid, + &descP->currentReader.mon, + &descP->currentReader.ref)) { + int res; + + /* There was another one */ + + SSDBG( descP, ("SOCKET", "socket_down_reader -> new (current) reader: " + "\r\n pid: %T" + "\r\n ref: %T" + "\r\n", + descP->currentReader.pid, + descP->currentReader.ref) ); + + if ((res = esock_select_read(env, descP->sock, descP, + &descP->currentReader.pid, + descP->currentReader.ref) < 0)) { + + esock_warning_msg("Failed select (%d) for new reader " + "after current (%T) died\r\n", + res, *pid); + + } + + } else { + + SSDBG( descP, ("SOCKET", + "socket_down_reader -> no active reader\r\n") ); + + descP->currentReaderP = NULL; + } + + } else { + + /* Maybe unqueue one of the waiting reader(s) */ + + SSDBG( descP, ("SOCKET", + "socket_down_reader -> " + "not current reader - maybe a waiting reader\r\n") ); + + reader_unqueue(env, descP, pid); + } +} +#endif // if !defined(__WIN32__) + + + +/* ---------------------------------------------------------------------- + * L o a d / u n l o a d / u p g r a d e F u n c t i o n s + * ---------------------------------------------------------------------- + */ + +static +ErlNifFunc socket_funcs[] = +{ + // Some utility and support functions + {"nif_info", 0, nif_info, 0}, + {"nif_supports", 1, nif_supports, 0}, + // {"nif_debug", 1, nif_debug, 0}, + // {"nif_command", 1, nif_command, 0}, + + // The proper "socket" interface + // nif_open/1 is used when we already have a file descriptor + // {"nif_open", 1, nif_open, 0}, + {"nif_open", 4, nif_open, 0}, + {"nif_bind", 2, nif_bind, 0}, + {"nif_connect", 2, nif_connect, 0}, + {"nif_listen", 2, nif_listen, 0}, + {"nif_accept", 2, nif_accept, 0}, + {"nif_send", 4, nif_send, 0}, + {"nif_sendto", 5, nif_sendto, 0}, + {"nif_sendmsg", 4, nif_sendmsg, 0}, + {"nif_recv", 4, nif_recv, 0}, + {"nif_recvfrom", 4, nif_recvfrom, 0}, + {"nif_recvmsg", 5, nif_recvmsg, 0}, + {"nif_close", 1, nif_close, 0}, + {"nif_shutdown", 2, nif_shutdown, 0}, + {"nif_setopt", 5, nif_setopt, 0}, + {"nif_getopt", 4, nif_getopt, 0}, + {"nif_sockname", 1, nif_sockname, 0}, + {"nif_peername", 1, nif_peername, 0}, + + /* Misc utility functions */ + + /* "Extra" functions to "complete" the socket interface. + * For instance, the function nif_finalize_connection + * is called after the connect *select* has "completed". + */ + {"nif_finalize_connection", 1, nif_finalize_connection, 0}, + {"nif_cancel", 3, nif_cancel, 0}, + {"nif_finalize_close", 1, nif_finalize_close, ERL_NIF_DIRTY_JOB_IO_BOUND} +}; + + +#if !defined(__WIN32__) +static +BOOLEAN_T extract_debug(ErlNifEnv* env, + ERL_NIF_TERM map) +{ + /* + * We need to do this here since the "proper" atom has not been + * created when this function is called. + */ + ERL_NIF_TERM debug = MKA(env, "debug"); + + return esock_extract_bool_from_map(env, map, debug, SOCKET_GLOBAL_DEBUG_DEFAULT); +} + +static +BOOLEAN_T extract_iow(ErlNifEnv* env, + ERL_NIF_TERM map) +{ + /* + * We need to do this here since the "proper" atom has not been + * created when this function is called. + */ + ERL_NIF_TERM iow = MKA(env, "iow"); + + return esock_extract_bool_from_map(env, map, iow, SOCKET_NIF_IOW_DEFAULT); +} +#endif // if !defined(__WIN32__) + + + +/* ======================================================================= + * load_info - A map of misc info (e.g global debug) + */ + +static +int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) +{ +#if !defined(__WIN32__) + esock_dbg_init(ESOCK_DBGOUT_DEFAULT); + // esock_dbg_init(ESOCK_DBGOUT_UNIQUE); + + data.dbg = extract_debug(env, load_info); + data.iow = extract_iow(env, load_info); + + /* +++ Global Counters +++ */ + data.cntMtx = MCREATE("socket[gcnt]"); + data.numSockets = 0; + data.numTypeDGrams = 0; + data.numTypeStreams = 0; + data.numTypeSeqPkgs = 0; + data.numDomainLocal = 0; + data.numDomainInet = 0; + data.numDomainInet6 = 0; + data.numProtoIP = 0; + data.numProtoTCP = 0; + data.numProtoUDP = 0; + data.numProtoSCTP = 0; +#endif + + /* +++ Misc atoms +++ */ + atom_adaptation_layer = MKA(env, str_adaptation_layer); + atom_address = MKA(env, str_address); + atom_association = MKA(env, str_association); + atom_assoc_id = MKA(env, str_assoc_id); + atom_authentication = MKA(env, str_authentication); + atom_bool = MKA(env, str_bool); + atom_close = MKA(env, str_close); + atom_closed = MKA(env, str_closed); + atom_closing = MKA(env, str_closing); + atom_cookie_life = MKA(env, str_cookie_life); + atom_data_in = MKA(env, str_data_in); + atom_do = MKA(env, str_do); + atom_dont = MKA(env, str_dont); + atom_exclude = MKA(env, str_exclude); + atom_false = MKA(env, str_false); + atom_global_counters = MKA(env, str_global_counters); + atom_in4_sockaddr = MKA(env, str_in4_sockaddr); + atom_in6_sockaddr = MKA(env, str_in6_sockaddr); + atom_include = MKA(env, str_include); + atom_initial = MKA(env, str_initial); + atom_int = MKA(env, str_int); + atom_interface = MKA(env, str_interface); + atom_iow = MKA(env, str_iow); + atom_local_rwnd = MKA(env, str_local_rwnd); + atom_max = MKA(env, str_max); + atom_max_attempts = MKA(env, str_max_attempts); + atom_max_init_timeo = MKA(env, str_max_init_timeo); + atom_max_instreams = MKA(env, str_max_instreams); + atom_max_rxt = MKA(env, str_max_rxt); + atom_min = MKA(env, str_min); + atom_mode = MKA(env, str_mode); + atom_multiaddr = MKA(env, str_multiaddr); + // atom_nif_abort = MKA(env, str_nif_abort); + atom_null = MKA(env, str_null); + atom_num_dinet = MKA(env, str_num_dinet); + atom_num_dinet6 = MKA(env, str_num_dinet6); + atom_num_dlocal = MKA(env, str_num_dlocal); + atom_num_outstreams = MKA(env, str_num_outstreams); + atom_num_peer_dests = MKA(env, str_num_peer_dests); + atom_num_pip = MKA(env, str_num_pip); + atom_num_psctp = MKA(env, str_num_psctp); + atom_num_ptcp = MKA(env, str_num_ptcp); + atom_num_pudp = MKA(env, str_num_pudp); + atom_num_sockets = MKA(env, str_num_sockets); + atom_num_tdgrams = MKA(env, str_num_tdgrams); + atom_num_tseqpkgs = MKA(env, str_num_tseqpkgs); + atom_num_tstreams = MKA(env, str_num_tstreams); + atom_partial_delivery = MKA(env, str_partial_delivery); + atom_peer_rwnd = MKA(env, str_peer_rwnd); + atom_peer_error = MKA(env, str_peer_error); + atom_probe = MKA(env, str_probe); + atom_select = MKA(env, str_select); + atom_sender_dry = MKA(env, str_sender_dry); + atom_send_failure = MKA(env, str_send_failure); + atom_shutdown = MKA(env, str_shutdown); + atom_slist = MKA(env, str_slist); + atom_sourceaddr = MKA(env, str_sourceaddr); + atom_timeout = MKA(env, str_timeout); + atom_true = MKA(env, str_true); + atom_want = MKA(env, str_want); + + /* Global atom(s) */ + esock_atom_abort = MKA(env, "abort"); + esock_atom_accept = MKA(env, "accept"); + esock_atom_acceptconn = MKA(env, "acceptconn"); + esock_atom_acceptfilter = MKA(env, "acceptfilter"); + esock_atom_adaption_layer = MKA(env, "adaption_layer"); + esock_atom_addr = MKA(env, "addr"); + esock_atom_addrform = MKA(env, "addrform"); + esock_atom_add_membership = MKA(env, "add_membership"); + esock_atom_add_source_membership = MKA(env, "add_source_membership"); + esock_atom_any = MKA(env, "any"); + esock_atom_associnfo = MKA(env, "associnfo"); + esock_atom_authhdr = MKA(env, "authhdr"); + esock_atom_auth_active_key = MKA(env, "auth_active_key"); + esock_atom_auth_asconf = MKA(env, "auth_asconf"); + esock_atom_auth_chunk = MKA(env, "auth_chunk"); + esock_atom_auth_delete_key = MKA(env, "auth_delete_key"); + esock_atom_auth_key = MKA(env, "auth_key"); + esock_atom_auth_level = MKA(env, "auth_level"); + esock_atom_autoclose = MKA(env, "autoclose"); + esock_atom_bindtodevice = MKA(env, "bindtodevice"); + esock_atom_block_source = MKA(env, "block_source"); + esock_atom_broadcast = MKA(env, "broadcast"); + esock_atom_busy_poll = MKA(env, "busy_poll"); + esock_atom_checksum = MKA(env, "checksum"); + esock_atom_close = MKA(env, "close"); + esock_atom_connect = MKA(env, "connect"); + esock_atom_congestion = MKA(env, "congestion"); + esock_atom_context = MKA(env, "context"); + esock_atom_cork = MKA(env, "cork"); + esock_atom_credentials = MKA(env, "credentials"); + esock_atom_ctrl = MKA(env, "ctrl"); + esock_atom_ctrunc = MKA(env, "ctrunc"); + esock_atom_data = MKA(env, "data"); + esock_atom_debug = MKA(env, "debug"); + esock_atom_default_send_params = MKA(env, "default_send_params"); + esock_atom_delayed_ack_time = MKA(env, "delayed_ack_time"); + esock_atom_dgram = MKA(env, "dgram"); + esock_atom_disable_fragments = MKA(env, "disable_fragments"); + esock_atom_domain = MKA(env, "domain"); + esock_atom_dontfrag = MKA(env, "dontfrag"); + esock_atom_dontroute = MKA(env, "dontroute"); + esock_atom_drop_membership = MKA(env, "drop_membership"); + esock_atom_drop_source_membership = MKA(env, "drop_source_membership"); + esock_atom_dstopts = MKA(env, "dstpopts"); + esock_atom_eor = MKA(env, "eor"); + esock_atom_error = MKA(env, "error"); + esock_atom_errqueue = MKA(env, "errqueue"); + esock_atom_esp_network_level = MKA(env, "esp_network_level"); + esock_atom_esp_trans_level = MKA(env, "esp_trans_level"); + esock_atom_events = MKA(env, "events"); + esock_atom_explicit_eor = MKA(env, "explicit_eor"); + esock_atom_faith = MKA(env, "faith"); + esock_atom_false = MKA(env, "false"); + esock_atom_family = MKA(env, "family"); + esock_atom_flags = MKA(env, "flags"); + esock_atom_flowinfo = MKA(env, "flowinfo"); + esock_atom_fragment_interleave = MKA(env, "fragment_interleave"); + esock_atom_freebind = MKA(env, "freebind"); + esock_atom_get_peer_addr_info = MKA(env, "get_peer_addr_info"); + esock_atom_hdrincl = MKA(env, "hdrincl"); + esock_atom_hmac_ident = MKA(env, "hmac_ident"); + esock_atom_hoplimit = MKA(env, "hoplimit"); + esock_atom_hopopts = MKA(env, "hopopts"); + esock_atom_ifindex = MKA(env, "ifindex"); + esock_atom_inet = MKA(env, "inet"); + esock_atom_inet6 = MKA(env, "inet6"); + esock_atom_info = MKA(env, "info"); + esock_atom_initmsg = MKA(env, "initmsg"); + esock_atom_iov = MKA(env, "iov"); + esock_atom_ip = MKA(env, "ip"); + esock_atom_ipcomp_level = MKA(env, "ipcomp_level"); + esock_atom_ipv6 = MKA(env, "ipv6"); + esock_atom_i_want_mapped_v4_addr = MKA(env, "i_want_mapped_v4_addr"); + esock_atom_join_group = MKA(env, "join_group"); + esock_atom_keepalive = MKA(env, "keepalive"); + esock_atom_keepcnt = MKA(env, "keepcnt"); + esock_atom_keepidle = MKA(env, "keepidle"); + esock_atom_keepintvl = MKA(env, "keepintvl"); + esock_atom_leave_group = MKA(env, "leave_group"); + esock_atom_level = MKA(env, "level"); + esock_atom_linger = MKA(env, "linger"); + esock_atom_local = MKA(env, "local"); + esock_atom_local_auth_chunks = MKA(env, "local_auth_chunks"); + esock_atom_loopback = MKA(env, "loopback"); + esock_atom_lowdelay = MKA(env, "lowdelay"); + esock_atom_mark = MKA(env, "mark"); + esock_atom_maxburst = MKA(env, "maxburst"); + esock_atom_maxseg = MKA(env, "maxseg"); + esock_atom_md5sig = MKA(env, "md5sig"); + esock_atom_mincost = MKA(env, "mincost"); + esock_atom_minttl = MKA(env, "minttl"); + esock_atom_msfilter = MKA(env, "msfilter"); + esock_atom_mtu = MKA(env, "mtu"); + esock_atom_mtu_discover = MKA(env, "mtu_discover"); + esock_atom_multicast_all = MKA(env, "multicast_all"); + esock_atom_multicast_hops = MKA(env, "multicast_hops"); + esock_atom_multicast_if = MKA(env, "multicast_if"); + esock_atom_multicast_loop = MKA(env, "multicast_loop"); + esock_atom_multicast_ttl = MKA(env, "multicast_ttl"); + esock_atom_nodefrag = MKA(env, "nodefrag"); + esock_atom_nodelay = MKA(env, "nodelay"); + esock_atom_noopt = MKA(env, "noopt"); + esock_atom_nopush = MKA(env, "nopush"); + esock_atom_not_found = MKA(env, "not_found"); + esock_atom_not_owner = MKA(env, "not_owner"); + esock_atom_ok = MKA(env, "ok"); + esock_atom_oob = MKA(env, "oob"); + esock_atom_oobinline = MKA(env, "oobinline"); + esock_atom_options = MKA(env, "options"); + esock_atom_origdstaddr = MKA(env, "origdstaddr"); + esock_atom_partial_delivery_point = MKA(env, "partial_delivery_point"); + esock_atom_passcred = MKA(env, "passcred"); + esock_atom_path = MKA(env, "path"); + esock_atom_peekcred = MKA(env, "peekcred"); + esock_atom_peek_off = MKA(env, "peek_off"); + esock_atom_peer_addr_params = MKA(env, "peer_addr_params"); + esock_atom_peer_auth_chunks = MKA(env, "peer_auth_chunks"); + esock_atom_pktinfo = MKA(env, "pktinfo"); + esock_atom_pktoptions = MKA(env, "pktoptions"); + esock_atom_port = MKA(env, "port"); + esock_atom_portrange = MKA(env, "portrange"); + esock_atom_primary_addr = MKA(env, "primary_addr"); + esock_atom_priority = MKA(env, "priority"); + esock_atom_protocol = MKA(env, "protocol"); + esock_atom_raw = MKA(env, "raw"); + esock_atom_rcvbuf = MKA(env, "rcvbuf"); + esock_atom_rcvbufforce = MKA(env, "rcvbufforce"); + esock_atom_rcvlowat = MKA(env, "rcvlowat"); + esock_atom_rcvtimeo = MKA(env, "rcvtimeo"); + esock_atom_rdm = MKA(env, "rdm"); + esock_atom_recv = MKA(env, "recv"); + esock_atom_recvdstaddr = MKA(env, "recvdstaddr"); + esock_atom_recverr = MKA(env, "recverr"); + esock_atom_recvfrom = MKA(env, "recvfrom"); + esock_atom_recvif = MKA(env, "recvif"); + esock_atom_recvmsg = MKA(env, "recvmsg"); + esock_atom_recvopts = MKA(env, "recvopts"); + esock_atom_recvorigdstaddr = MKA(env, "recvorigdstaddr"); + esock_atom_recvpktinfo = MKA(env, "recvpktinfo"); + esock_atom_recvtclass = MKA(env, "recvtclass"); + esock_atom_recvtos = MKA(env, "recvtos"); + esock_atom_recvttl = MKA(env, "recvttl"); + esock_atom_reliability = MKA(env, "reliability"); + esock_atom_reset_streams = MKA(env, "reset_streams"); + esock_atom_retopts = MKA(env, "retopts"); + esock_atom_reuseaddr = MKA(env, "reuseaddr"); + esock_atom_reuseport = MKA(env, "reuseport"); + esock_atom_rights = MKA(env, "rights"); + esock_atom_router_alert = MKA(env, "router_alert"); + esock_atom_rthdr = MKA(env, "rthdr"); + esock_atom_rtoinfo = MKA(env, "rtoinfo"); + esock_atom_rxq_ovfl = MKA(env, "rxq_ovfl"); + esock_atom_scope_id = MKA(env, "scope_id"); + esock_atom_sctp = MKA(env, "sctp"); + esock_atom_sec = MKA(env, "sec"); + esock_atom_select_failed = MKA(env, "select_failed"); + esock_atom_select_sent = MKA(env, "select_sent"); + esock_atom_send = MKA(env, "send"); + esock_atom_sendmsg = MKA(env, "sendmsg"); + esock_atom_sendsrcaddr = MKA(env, "sendsrcaddr"); + esock_atom_sendto = MKA(env, "sendto"); + esock_atom_seqpacket = MKA(env, "seqpacket"); + esock_atom_setfib = MKA(env, "setfib"); + esock_atom_set_peer_primary_addr = MKA(env, "set_peer_primary_addr"); + esock_atom_sndbuf = MKA(env, "sndbuf"); + esock_atom_sndbufforce = MKA(env, "sndbufforce"); + esock_atom_sndlowat = MKA(env, "sndlowat"); + esock_atom_sndtimeo = MKA(env, "sndtimeo"); + esock_atom_socket = MKA(env, "socket"); + esock_atom_socket_tag = MKA(env, "$socket"); + esock_atom_spec_dst = MKA(env, "spec_dst"); + esock_atom_status = MKA(env, "status"); + esock_atom_stream = MKA(env, "stream"); + esock_atom_syncnt = MKA(env, "syncnt"); + esock_atom_tclass = MKA(env, "tclass"); + esock_atom_tcp = MKA(env, "tcp"); + esock_atom_throughput = MKA(env, "throughput"); + esock_atom_timestamp = MKA(env, "timestamp"); + esock_atom_tos = MKA(env, "tos"); + esock_atom_transparent = MKA(env, "transparent"); + esock_atom_true = MKA(env, "true"); + esock_atom_trunc = MKA(env, "trunc"); + esock_atom_ttl = MKA(env, "ttl"); + esock_atom_type = MKA(env, "type"); + esock_atom_udp = MKA(env, "udp"); + esock_atom_unblock_source = MKA(env, "unblock_source"); + esock_atom_undefined = MKA(env, "undefined"); + esock_atom_unicast_hops = MKA(env, "unicast_hops"); + esock_atom_unknown = MKA(env, "unknown"); + esock_atom_usec = MKA(env, "usec"); + esock_atom_user_timeout = MKA(env, "user_timeout"); + esock_atom_use_ext_recvinfo = MKA(env, "use_ext_recvinfo"); + esock_atom_use_min_mtu = MKA(env, "use_min_mtu"); + esock_atom_v6only = MKA(env, "v6only"); + + /* Global error codes */ + esock_atom_eafnosupport = MKA(env, ESOCK_STR_EAFNOSUPPORT); + esock_atom_eagain = MKA(env, ESOCK_STR_EAGAIN); + esock_atom_einval = MKA(env, ESOCK_STR_EINVAL); + + /* Error codes */ + atom_eisconn = MKA(env, str_eisconn); + atom_enotclosing = MKA(env, str_enotclosing); + atom_enotconn = MKA(env, str_enotconn); + atom_exalloc = MKA(env, str_exalloc); + atom_exbadstate = MKA(env, str_exbadstate); + atom_exbusy = MKA(env, str_exbusy); + atom_exmon = MKA(env, str_exmon); + atom_exself = MKA(env, str_exself); + atom_exsend = MKA(env, str_exsend); + + // For storing "global" things... + // data.env = enif_alloc_env(); // We should really check + // data.version = MKA(env, ERTS_VERSION); + // data.buildDate = MKA(env, ERTS_BUILD_DATE); + + sockets = enif_open_resource_type_x(env, + "sockets", + &socketInit, + ERL_NIF_RT_CREATE, + NULL); + + return !sockets; +} + +ERL_NIF_INIT(socket, socket_funcs, on_load, NULL, NULL, NULL) |