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-rw-r--r--erts/emulator/drivers/common/efile_drv.c13
-rw-r--r--erts/emulator/drivers/common/gzio.c2
-rw-r--r--erts/emulator/drivers/common/inet_drv.c237
-rw-r--r--erts/emulator/drivers/common/zlib_drv.c88
4 files changed, 276 insertions, 64 deletions
diff --git a/erts/emulator/drivers/common/efile_drv.c b/erts/emulator/drivers/common/efile_drv.c
index 3adb8db661..1538191d67 100644
--- a/erts/emulator/drivers/common/efile_drv.c
+++ b/erts/emulator/drivers/common/efile_drv.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2017. 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.
@@ -1937,7 +1937,8 @@ static void free_sendfile(void *data) {
MUTEX_LOCK(d->c.sendfile.q_mtx);
driver_deq(d->c.sendfile.port,1);
MUTEX_UNLOCK(d->c.sendfile.q_mtx);
- driver_select(d->c.sendfile.port, (ErlDrvEvent)(long)d->c.sendfile.out_fd, ERL_DRV_USE_NO_CALLBACK|ERL_DRV_WRITE, 0);
+ driver_select(d->c.sendfile.port, (ErlDrvEvent)(long)d->c.sendfile.out_fd,
+ ERL_DRV_USE_NO_CALLBACK|ERL_DRV_WRITE, 0);
}
EF_FREE(data);
}
@@ -2330,9 +2331,9 @@ file_async_ready(ErlDrvData e, ErlDrvThreadData data)
free_read(data);
break;
case FILE_READ_LINE:
- /* The read_line stucture differs from the read structure.
- The data->read_offset and d->c.read_line.read_offset are copies, as are
- data->read_size and d->c.read_line.read_size
+ /* The read_line structure differs from the read structure.
+ The data->read_offset and d->c.read_line.read_offset are copies, as are
+ data->read_size and d->c.read_line.read_size
The read_line function does not kniow in advance how large the binary has to be,
why new allocation (but not reallocation of the old binary, for obvious reasons)
may happen in the worker thread. */
@@ -2555,7 +2556,7 @@ file_async_ready(ErlDrvData e, ErlDrvThreadData data)
desc->sendfile_state = sending;
desc->d = d;
driver_select(desc->port, (ErlDrvEvent)(long)d->c.sendfile.out_fd,
- ERL_DRV_USE_NO_CALLBACK|ERL_DRV_WRITE, 1);
+ ERL_DRV_USE|ERL_DRV_WRITE, 1);
}
break;
#endif
diff --git a/erts/emulator/drivers/common/gzio.c b/erts/emulator/drivers/common/gzio.c
index 1ef1602ec9..f60c781894 100644
--- a/erts/emulator/drivers/common/gzio.c
+++ b/erts/emulator/drivers/common/gzio.c
@@ -308,7 +308,7 @@ ErtsGzFile erts_gzopen (path, mode)
/* ===========================================================================
Read a byte from a gz_stream; update next_in and avail_in. Return EOF
for end of file.
- IN assertion: the stream s has been sucessfully opened for reading.
+ IN assertion: the stream s has been successfully opened for reading.
*/
local int get_byte(s)
gz_stream *s;
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 5ce0e1de9e..13ee935e45 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2017. 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.
@@ -591,7 +591,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
(((unsigned char*) (s))[1] << 8) | \
(((unsigned char*) (s))[0]))
-#ifdef HAVE_SYS_UN_H
+#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)
@@ -602,14 +602,6 @@ static size_t my_strnlen(const char *s, size_t maxlen)
return i;
}
-/* Check that some character in the buffer != '\0' */
-static int is_nonzero(const char *s, size_t n)
-{
- size_t i;
- for (i = 0; i < n; i++) if (s[i] != '\0') return !0;
- return 0;
-}
-
#endif
#ifdef VALGRIND
@@ -728,7 +720,7 @@ static int is_nonzero(const char *s, size_t n)
#define TCP_ADDF_PENDING_SHUTDOWN \
(TCP_ADDF_PENDING_SHUT_WR | TCP_ADDF_PENDING_SHUT_RDWR)
#define TCP_ADDF_SHOW_ECONNRESET 64 /* Tell user about incoming RST */
-#define TCP_ADDF_DELAYED_ECONNRESET 128 /* An ECONNRESET error occured on send or shutdown */
+#define TCP_ADDF_DELAYED_ECONNRESET 128 /* An ECONNRESET error occurred on send or shutdown */
#define TCP_ADDF_SHUTDOWN_WR_DONE 256 /* A shutdown(sock, SHUT_WR) or SHUT_RDWR was made */
#define TCP_ADDF_LINGER_ZERO 512 /* Discard driver queue on port close */
@@ -777,6 +769,8 @@ static int is_nonzero(const char *s, size_t n)
#define INET_LOPT_NETNS 38 /* Network namespace pathname */
#define INET_LOPT_TCP_SHOW_ECONNRESET 39 /* tell user about incoming RST */
#define INET_LOPT_LINE_DELIM 40 /* Line delimiting char */
+#define INET_OPT_TCLASS 41 /* IPv6 transport class */
+#define INET_OPT_BIND_TO_DEVICE 42 /* get/set network device the socket is bound to */
/* SCTP options: a separate range, from 100: */
#define SCTP_OPT_RTOINFO 100
#define SCTP_OPT_ASSOCINFO 101
@@ -1330,8 +1324,10 @@ static ErlDrvTermData am_reuseaddr;
static ErlDrvTermData am_dontroute;
static ErlDrvTermData am_priority;
static ErlDrvTermData am_tos;
+static ErlDrvTermData am_tclass;
static ErlDrvTermData am_ipv6_v6only;
static ErlDrvTermData am_netns;
+static ErlDrvTermData am_bind_to_device;
#endif
static char str_eafnosupport[] = "eafnosupport";
@@ -3720,8 +3716,10 @@ static void inet_init_sctp(void) {
INIT_ATOM(dontroute);
INIT_ATOM(priority);
INIT_ATOM(tos);
+ INIT_ATOM(tclass);
INIT_ATOM(ipv6_v6only);
INIT_ATOM(netns);
+ INIT_ATOM(bind_to_device);
/* Option names */
INIT_ATOM(sctp_rtoinfo);
@@ -4015,13 +4013,30 @@ static char* inet_set_address(int family, inet_address* dst,
int n;
if (*len == 0) return str_einval;
n = *((unsigned char*)(*src)); /* Length field */
- if ((*len < 1+n) || (sizeof(dst->sal.sun_path) < n+1)) {
+ if (*len < 1+n) return str_einval;
+ if (n +
+#ifdef __linux__
+ /* Make sure the address gets zero terminated
+ * except when the first byte is \0 because then it is
+ * sort of zero terminated although the zero termination
+ * comes before the address...
+ * This fix handles Linux's nonportable
+ * abstract socket address extension.
+ */
+ ((*len) > 1 && (*src)[1] == '\0' ? 0 : 1)
+#else
+ 1
+#endif
+ > sizeof(dst->sal.sun_path)) {
return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_un));
dst->sal.sun_family = family;
sys_memcpy(dst->sal.sun_path, (*src)+1, n);
*len = offsetof(struct sockaddr_un, sun_path) + n;
+#ifndef NO_SA_LEN
+ dst->sal.sun_len = *len;
+#endif
*src += 1 + n;
return NULL;
}
@@ -4129,8 +4144,8 @@ static char *inet_set_faddress(int family, inet_address* dst,
/* Get a inaddr structure
** src = inaddr structure
-** *len is the lenght of structure
** dst is filled with [F,P1,P0,X1,....]
+** *len is the length of structure
** where F is the family code (coded)
** and *len is the length of dst on return
** (suitable to deliver to erlang)
@@ -4166,15 +4181,16 @@ static int inet_get_address(char* dst, inet_address* src, unsigned int* len)
if (*len < offsetof(struct sockaddr_un, sun_path)) return -1;
n = *len - offsetof(struct sockaddr_un, sun_path);
if (255 < n) return -1;
- /* Portability fix: Assume that the address is a zero terminated
- * string, except when the first byte is \0 i.e the
- * string length is 0. Then use the reported length instead.
- * This fix handles Linux's abstract socket address
- * nonportable extension.
- */
m = my_strnlen(src->sal.sun_path, n);
- if ((m == 0) && is_nonzero(src->sal.sun_path, n))
- m = n;
+#ifdef __linux__
+ /* Assume that the address is a zero terminated string,
+ * except when the first byte is \0 i.e the string length is 0,
+ * then use the reported length instead.
+ * This fix handles Linux's nonportable
+ * abstract socket address extension.
+ */
+ if (m == 0) m = n;
+#endif
dst[0] = INET_AF_LOCAL;
dst[1] = (char) ((unsigned char) m);
sys_memcpy(dst+2, src->sal.sun_path, m);
@@ -4231,15 +4247,16 @@ inet_address_to_erlang(char *dst, inet_address **src, SOCKLEN_T sz) {
if (sz < offsetof(struct sockaddr_un, sun_path)) return -1;
n = sz - offsetof(struct sockaddr_un, sun_path);
if (255 < n) return -1;
- /* Portability fix: Assume that the address is a zero terminated
- * string, except when the first byte is \0 i.e the
- * string length is 0. Then use the reported length instead.
- * This fix handles Linux's abstract socket address
- * nonportable extension.
- */
m = my_strnlen((*src)->sal.sun_path, n);
- if ((m == 0) && is_nonzero((*src)->sal.sun_path, n))
- m = n;
+#ifdef __linux__
+ /* Assume that the address is a zero terminated string,
+ * except when the first byte is \0 i.e the string length is 0,
+ * Then use the reported length instead.
+ * This fix handles Linux's nonportable
+ * abstract socket address extension.
+ */
+ if (m == 0) m = n;
+#endif
if (dst) {
dst[0] = INET_AF_LOCAL;
dst[1] = (char) ((unsigned char) m);
@@ -5943,6 +5960,9 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
int ival;
char* arg_ptr;
int arg_sz;
+#ifdef SO_BINDTODEVICE
+ char ifname[IFNAMSIZ];
+#endif
enum PacketParseType old_htype = desc->htype;
int old_active = desc->active;
int propagate; /* Set to 1 if failure to set this option
@@ -6228,6 +6248,15 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
#else
continue;
#endif
+#if defined(IPV6_TCLASS) && defined(SOL_IPV6)
+ case INET_OPT_TCLASS:
+ proto = SOL_IPV6;
+ type = IPV6_TCLASS;
+ propagate = 1;
+ DEBUGF(("inet_set_opts(%ld): s=%d, IPV6_TCLASS=%d\r\n",
+ (long)desc->port, desc->s, ival));
+ break;
+#endif
case TCP_OPT_NODELAY:
proto = IPPROTO_TCP;
@@ -6319,6 +6348,29 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
len -= arg_sz;
break;
+#ifdef SO_BINDTODEVICE
+ case INET_OPT_BIND_TO_DEVICE:
+ if (ival < 0) return -1;
+ if (len < ival) return -1;
+ if (ival > sizeof(ifname)) {
+ return -1;
+ }
+ memcpy(ifname, ptr, ival);
+ ifname[ival] = '\0';
+ ptr += ival;
+ len -= ival;
+
+ proto = SOL_SOCKET;
+ type = SO_BINDTODEVICE;
+ arg_ptr = (char*)&ifname;
+ arg_sz = sizeof(ifname);
+ propagate = 1; /* We do want to know if this fails */
+
+ DEBUGF(("inet_set_opts(%ld): s=%d, SO_BINDTODEVICE=%s\r\n",
+ (long)desc->port, desc->s, ifname));
+ break;
+#endif
+
default:
return -1;
}
@@ -6451,6 +6503,9 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
# ifdef SCTP_DELAYED_ACK_TIME
struct sctp_assoc_value av; /* Not in SOLARIS10 */
# endif
+# ifdef SO_BINDTODEVICE
+ char ifname[IFNAMSIZ];
+# endif
}
arg;
@@ -6661,6 +6716,19 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
continue; /* Option not supported -- ignore it */
# endif
+# if defined(IPV6_TCLASS) && defined(SOL_IPV6)
+ case INET_OPT_TCLASS:
+ {
+ arg.ival= get_int32 (curr); curr += 4;
+ proto = SOL_IPV6;
+ type = IPV6_TCLASS;
+ arg_ptr = (char*) (&arg.ival);
+ arg_sz = sizeof ( arg.ival);
+ break;
+ }
+# endif
+
+
case INET_OPT_IPV6_V6ONLY:
# if HAVE_DECL_IPV6_V6ONLY
{
@@ -6677,6 +6745,23 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
continue; /* Option not supported -- ignore it */
# endif
+#ifdef SO_BINDTODEVICE
+ case INET_OPT_BIND_TO_DEVICE:
+ arg_sz = get_int32(curr); curr += 4;
+ CHKLEN(curr, arg_sz);
+ if (arg_sz >= sizeof(arg.ifname))
+ return -1;
+ memcpy(arg.ifname, curr, arg_sz);
+ arg.ifname[arg_sz] = '\0';
+ curr += arg_sz;
+
+ proto = SOL_SOCKET;
+ type = SO_BINDTODEVICE;
+ arg_ptr = (char*) (&arg.ifname);
+ arg_sz = sizeof ( arg.ifname);
+ break;
+#endif
+
case SCTP_OPT_AUTOCLOSE:
{
arg.ival= get_int32 (curr); curr += 4;
@@ -6942,6 +7027,9 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
ErlDrvSizeT dest_used = 0;
ErlDrvSizeT dest_allocated = destlen;
char *orig_dest = *dest;
+#ifdef SO_BINDTODEVICE
+ char ifname[IFNAMSIZ];
+#endif
/* Ptr is a name parameter */
#define RETURN_ERROR() \
@@ -7162,6 +7250,15 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
put_int32(0, ptr);
continue;
#endif
+ case INET_OPT_TCLASS:
+#if defined(IPV6_TCLASS) && defined(SOL_IPV6)
+ proto = SOL_IPV6;
+ type = IPV6_TCLASS;
+ break;
+#else
+ TRUNCATE_TO(0,ptr);
+ continue;
+#endif
case INET_OPT_REUSEADDR:
type = SO_REUSEADDR;
break;
@@ -7268,6 +7365,26 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
put_int32(arg_sz,ptr);
continue;
}
+
+#ifdef SO_BINDTODEVICE
+ case INET_OPT_BIND_TO_DEVICE:
+ arg_sz = sizeof(ifname);
+ TRUNCATE_TO(0,ptr);
+ PLACE_FOR(5 + arg_sz,ptr);
+ arg_ptr = ptr + 5;
+ if (IS_SOCKET_ERROR(sock_getopt(desc->s,SOL_SOCKET,SO_BINDTODEVICE,
+ arg_ptr,&arg_sz))) {
+ TRUNCATE_TO(0,ptr);
+ continue;
+ }
+ arg_sz = my_strnlen(arg_ptr, arg_sz);
+ TRUNCATE_TO(arg_sz + 5,ptr);
+ *ptr++ = opt;
+ put_int32(arg_sz,ptr);
+ ptr += arg_sz;
+ continue;
+#endif
+
default:
RETURN_ERROR();
}
@@ -7549,6 +7666,25 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
i = LOAD_TUPLE (spec, i, 2);
break;
}
+
+#ifdef SO_BINDTODEVICE
+ /* The following option returns a binary: */
+ case INET_OPT_BIND_TO_DEVICE: {
+ char ifname[IFNAMSIZ];
+ unsigned int sz = sizeof(ifname);
+
+ if (sock_getopt(desc->s, SOL_SOCKET, SO_BINDTODEVICE,
+ &ifname, &sz) < 0) continue;
+ /* Fill in the response: */
+ PLACE_FOR(spec, i,
+ LOAD_ATOM_CNT + LOAD_BUF2BINARY_CNT + LOAD_TUPLE_CNT);
+ i = LOAD_ATOM (spec, i, am_bind_to_device);
+ i = LOAD_BUF2BINARY(spec, i, ifname, my_strnlen(ifname, sz));
+ i = LOAD_TUPLE (spec, i, 2);
+ break;
+ }
+#endif
+
/* The following options just return an integer value: */
case INET_OPT_RCVBUF :
case INET_OPT_SNDBUF :
@@ -7556,6 +7692,7 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
case INET_OPT_DONTROUTE:
case INET_OPT_PRIORITY :
case INET_OPT_TOS :
+ case INET_OPT_TCLASS :
case INET_OPT_IPV6_V6ONLY:
case SCTP_OPT_AUTOCLOSE:
case SCTP_OPT_MAXSEG :
@@ -7629,6 +7766,19 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
continue;
# endif
}
+ case INET_OPT_TCLASS:
+ {
+# if defined(IPV6_TCLASS) && defined(SOL_IPV6)
+ proto = SOL_IPV6;
+ type = IPV6_TCLASS;
+ is_int = 1;
+ tag = am_tclass;
+ break;
+# else
+ /* Not supported -- ignore */
+ continue;
+# endif
+ }
case INET_OPT_IPV6_V6ONLY:
# if HAVE_DECL_IPV6_V6ONLY
{
@@ -8297,10 +8447,10 @@ static ErlDrvData inet_start(ErlDrvPort port, int size, int protocol)
return (ErlDrvData)desc;
}
-
-#ifndef MAXHOSTNAMELEN
-#define MAXHOSTNAMELEN 256
-#endif
+/* MAXHOSTNAMELEN could be 64 or 255 depending
+on the platform. Instead, use INET_MAXHOSTNAMELEN
+which is always 255 across all platforms */
+#define INET_MAXHOSTNAMELEN 255
/*
** common TCP/UDP/SCTP control command
@@ -8477,13 +8627,14 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
}
case INET_REQ_GETHOSTNAME: { /* get host name */
- char tbuf[MAXHOSTNAMELEN];
+ char tbuf[INET_MAXHOSTNAMELEN + 1];
DEBUGF(("inet_ctl(%ld): GETHOSTNAME\r\n", (long)desc->port));
if (len != 0)
return ctl_error(EINVAL, rbuf, rsize);
- if (IS_SOCKET_ERROR(sock_hostname(tbuf, MAXHOSTNAMELEN)))
+ /* gethostname requires len to be max(hostname) + 1 */
+ if (IS_SOCKET_ERROR(sock_hostname(tbuf, INET_MAXHOSTNAMELEN + 1)))
return ctl_error(sock_errno(), rbuf, rsize);
return ctl_reply(INET_REP_OK, tbuf, strlen(tbuf), rbuf, rsize);
}
@@ -8536,6 +8687,7 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
else {
ptr = &peer;
sz = sizeof(peer);
+ sys_memzero((char *) &peer, sz);
if (IS_SOCKET_ERROR
(sock_peer
(desc->s, (struct sockaddr*)ptr, &sz)))
@@ -10338,6 +10490,9 @@ static int tcp_send_or_shutdown_error(tcp_descriptor* desc, int err)
set_busy_port(desc->inet.port, 0);
}
+ tcp_clear_output(desc);
+ tcp_clear_input(desc);
+
/*
* We used to handle "expected errors" differently from unexpected ones.
* Now we handle all errors in the same way (unless the show_econnreset
@@ -10360,8 +10515,6 @@ static int tcp_send_or_shutdown_error(tcp_descriptor* desc, int err)
else
desc_close(INETP(desc));
} else {
- tcp_clear_output(desc);
- tcp_clear_input(desc);
tcp_close_check(desc);
erl_inet_close(INETP(desc));
@@ -10686,10 +10839,11 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event)
#ifndef SO_ERROR
{
- int sz = sizeof(desc->inet.remote);
- int code = sock_peer(desc->inet.s,
- (struct sockaddr*) &desc->inet.remote, &sz);
-
+ int sz, code;
+ sz = sizeof(desc->inet.remote);
+ sys_memzero((char *) &desc->inet.remote, sz);
+ code = sock_peer(desc->inet.s,
+ (struct sockaddr*) &desc->inet.remote, &sz);
if (IS_SOCKET_ERROR(code)) {
desc->inet.state = INET_STATE_OPEN; /* restore state */
ret = async_error(INETP(desc), sock_errno());
@@ -11407,6 +11561,7 @@ static void packet_inet_command(ErlDrvData e, char* buf, ErlDrvSizeT len)
VALGRIND_MAKE_MEM_DEFINED(mhdr.msg_control, mhdr.msg_controllen); /*suppress "uninitialised bytes"*/
mhdr.msg_flags = 0; /* Not used with "sendmsg" */
+ inet_output_count(desc, data_len);
/* Now do the actual sending. NB: "flags" in "sendmsg" itself are NOT
used: */
code = sock_sendmsg(desc->s, &mhdr, 0);
diff --git a/erts/emulator/drivers/common/zlib_drv.c b/erts/emulator/drivers/common/zlib_drv.c
index 440ba956d8..e342e414b5 100644
--- a/erts/emulator/drivers/common/zlib_drv.c
+++ b/erts/emulator/drivers/common/zlib_drv.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2003-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2003-2017. 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.
@@ -44,30 +44,34 @@
#define INFLATE_INIT 8
#define INFLATE_INIT2 9
#define INFLATE_SETDICT 10
-#define INFLATE_SYNC 11
-#define INFLATE_RESET 12
-#define INFLATE_END 13
-#define INFLATE 14
+#define INFLATE_GETDICT 11
+#define INFLATE_SYNC 12
+#define INFLATE_RESET 13
+#define INFLATE_END 14
+#define INFLATE 15
-#define CRC32_0 15
-#define CRC32_1 16
-#define CRC32_2 17
+#define CRC32_0 16
+#define CRC32_1 17
+#define CRC32_2 18
-#define SET_BUFSZ 18
-#define GET_BUFSZ 19
-#define GET_QSIZE 20
+#define SET_BUFSZ 19
+#define GET_BUFSZ 20
+#define GET_QSIZE 21
-#define ADLER32_1 21
-#define ADLER32_2 22
+#define ADLER32_1 22
+#define ADLER32_2 23
-#define CRC32_COMBINE 23
-#define ADLER32_COMBINE 24
+#define CRC32_COMBINE 24
+#define ADLER32_COMBINE 25
-#define INFLATE_CHUNK 25
+#define INFLATE_CHUNK 26
#define DEFAULT_BUFSZ 4000
+/* According to zlib documentation, it can never exceed this */
+#define INFL_DICT_SZ 32768
+
/* This flag is used in the same places, where zlib return codes
* (Z_OK, Z_STREAM_END, Z_NEED_DICT) are. So, we need to set it to
* relatively large value to avoid possible value clashes in future.
@@ -248,6 +252,23 @@ static int zlib_output(ZLibData* d)
return zlib_output_init(d);
}
+static int zlib_inflate_get_dictionary(ZLibData* d)
+{
+#ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
+ ErlDrvBinary* dbin = driver_alloc_binary(INFL_DICT_SZ);
+ uInt dlen = 0;
+ int res = inflateGetDictionary(&d->s, (unsigned char*)dbin->orig_bytes, &dlen);
+ if ((res == Z_OK) && (driver_output_binary(d->port, NULL, 0, dbin, 0, dlen) < 0)) {
+ res = Z_ERRNO;
+ }
+ driver_free_binary(dbin);
+ return res;
+#else
+ abort(); /* never called, just to silence 'unresolved symbol'
+ for non-optimizing compiler */
+#endif
+}
+
static int zlib_inflate(ZLibData* d, int flush)
{
int res = Z_OK;
@@ -430,10 +451,35 @@ static void zlib_free(void* data, void* addr)
driver_free(addr);
}
+#if defined(__APPLE__) && defined(__MACH__) && defined(HAVE_ZLIB_INFLATEGETDICTIONARY)
+
+/* Work around broken build system with runtime version test */
+static int have_inflateGetDictionary;
+
+static int zlib_init()
+{
+ unsigned int v[4] = {0, 0, 0, 0};
+ unsigned hexver;
+
+ sscanf(zlibVersion(), "%u.%u.%u.%u", &v[0], &v[1], &v[2], &v[3]);
+
+ hexver = (v[0] << (8*3)) | (v[1] << (8*2)) | (v[2] << (8)) | v[3];
+
+ have_inflateGetDictionary = (hexver >= 0x1020701); /* 1.2.7.1 */
+
+ return 0;
+}
+#else /* trust configure got it right */
+# ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
+# define have_inflateGetDictionary 1
+# else
+# define have_inflateGetDictionary 0
+# endif
static int zlib_init()
{
return 0;
}
+#endif
static ErlDrvData zlib_start(ErlDrvPort port, char* buf)
{
@@ -586,6 +632,16 @@ static ErlDrvSSizeT zlib_ctl(ErlDrvData drv_data, unsigned int command, char *bu
res = inflateSetDictionary(&d->s, (unsigned char*)buf, len);
return zlib_return(res, rbuf, rlen);
+ case INFLATE_GETDICT:
+ if (have_inflateGetDictionary) {
+ if (d->state != ST_INFLATE) goto badarg;
+ res = zlib_inflate_get_dictionary(d);
+ } else {
+ errno = ENOTSUP;
+ res = Z_ERRNO;
+ }
+ return zlib_return(res, rbuf, rlen);
+
case INFLATE_SYNC:
if (d->state != ST_INFLATE) goto badarg;
if (len != 0) goto badarg;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 08:08:05 +0000