From bb52546e9a671ed0fd55d2e5274f299a853bed51 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Tue, 5 Nov 2013 15:52:56 +0100
Subject: Implement prim_inet:socknames/1,2 and prim_inet:peernames/1,2
---
erts/configure.in | 2 +-
erts/emulator/beam/io.c | 2 +-
erts/emulator/drivers/common/inet_drv.c | 225 ++++++++++++++++++++++++++++++--
erts/preloaded/ebin/prim_inet.beam | Bin 70856 -> 72632 bytes
erts/preloaded/src/prim_inet.erl | 70 +++++++++-
5 files changed, 287 insertions(+), 12 deletions(-)
(limited to 'erts')
diff --git a/erts/configure.in b/erts/configure.in
index f17f4cb5c8..4f94f0d156 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1647,7 +1647,7 @@ if test "x$enable_sctp" != "xno" ; then
fi
if test x"$ac_cv_header_netinet_sctp_h" = x"yes"; then
- AC_CHECK_FUNCS([sctp_bindx sctp_peeloff])
+ AC_CHECK_FUNCS([sctp_bindx sctp_peeloff sctp_getladdrs sctp_freeladdrs sctp_getpaddrs sctp_freepaddrs])
AC_CHECK_DECLS([SCTP_UNORDERED, SCTP_ADDR_OVER, SCTP_ABORT,
SCTP_EOF, SCTP_SENDALL, SCTP_ADDR_CONFIRMED,
SCTP_DELAYED_ACK_TIME,
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index c1e66b59af..aeecea1ff5 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -4078,7 +4078,7 @@ erts_port_control(Process* c_p,
copy = 1;
else {
binp = ((ProcBin *) ebinp)->val;
- ASSERT(bufp < bufp + size);
+ ASSERT(bufp <= bufp + size);
ASSERT(binp->orig_bytes <= bufp
&& bufp + size <= binp->orig_bytes + binp->orig_size);
erts_refc_inc(&binp->refc, 1);
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 60db50e80a..8d26adfa63 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -417,13 +417,44 @@ static unsigned long one_value = 1;
# define sctp_adaptation_layer_event sctp_adaption_layer_event
#endif
-#ifdef __GNUC__
+#if defined(__GNUC__) && defined(HAVE_SCTP_BINDX)
static typeof(sctp_bindx) *p_sctp_bindx = NULL;
+#else
+static int (*p_sctp_bindx)
+ (int sd, struct sockaddr *addrs, int addrcnt, int flags) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_PEELOFF)
static typeof(sctp_peeloff) *p_sctp_peeloff = NULL;
#else
-static int (*p_sctp_bindx)(int sd, struct sockaddr *addrs,
- int addrcnt, int flags) = NULL;
-static int (*p_sctp_peeloff)(int sd, sctp_assoc_t assoc_id) = NULL;
+static int (*p_sctp_peeloff)
+ (int sd, sctp_assoc_t assoc_id) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_GETLADDRS)
+static typeof(sctp_getladdrs) *p_sctp_getladdrs = NULL;
+#else
+static int (*p_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) *p_sctp_freeladdrs = NULL;
+#else
+static void (*p_sctp_freeladdrs)(struct sockaddr *addrs) = NULL;
+#endif
+
+#if defined(__GNUC__) && defined(HAVE_SCTP_GETPADDRS)
+static typeof(sctp_getpaddrs) *p_sctp_getpaddrs = NULL;
+#else
+static int (*p_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) *p_sctp_freepaddrs = NULL;
+#else
+static void (*p_sctp_freepaddrs)(struct sockaddr *addrs) = NULL;
#endif
#endif /* #if defined(HAVE_SCTP_H) */
@@ -593,7 +624,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
#define INET_F_BUSY 0x0080
#define INET_F_MULTI_CLIENT 0x0100 /* Multiple clients for one descriptor, i.e. multi-accept */
-/* One numberspace for *_REC_* so if an e.g UDP request is issued
+/* One numberspace for *_REQ_* so if an e.g UDP request is issued
** for a TCP socket, the driver can protest.
*/
#define INET_REQ_OPEN 1
@@ -624,6 +655,8 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
#define INET_REQ_ACCEPT 26
#define INET_REQ_LISTEN 27
#define INET_REQ_IGNOREFD 28
+#define INET_REQ_GETLADDRS 29
+#define INET_REQ_GETPADDRS 30
/* TCP requests */
/* #define TCP_REQ_ACCEPT 40 MOVED */
@@ -3658,9 +3691,27 @@ static int inet_init()
/* Check the size of SCTP AssocID -- currently both this driver and the
Erlang part require 32 bit: */
ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
-# if defined(HAVE_SCTP_BINDX) && defined (HAVE_SCTP_PEELOFF)
+# if defined(HAVE_SCTP_BINDX)
p_sctp_bindx = sctp_bindx;
+# if defined(HAVE_SCTP_PEELOFF)
p_sctp_peeloff = sctp_peeloff;
+# else
+ p_sctp_peeloff = NULL;
+# endif
+# if defined(HAVE_SCTP_GETLADDRS) && defined(HAVE_SCTP_FREELADDRS)
+ p_sctp_getladdrs = sctp_getladdrs;
+ p_sctp_freeladdrs = sctp_freeladdrs;
+# else
+ p_sctp_getladdrs = NULL;
+ p_sctp_freeladdrs = NULL;
+# endif
+# if defined(HAVE_SCTP_GETPADDRS) && defined(HAVE_SCTP_FREEPADDRS)
+ p_sctp_getpaddrs = sctp_getpaddrs;
+ p_sctp_freepaddrs = sctp_freepaddrs;
+# else
+ p_sctp_getpaddrs = NULL;
+ p_sctp_freepaddrs = NULL;
+# endif
inet_init_sctp();
add_driver_entry(&sctp_inet_driver_entry);
# else
@@ -3675,12 +3726,36 @@ static int inet_init()
void *ptr;
if (erts_sys_ddll_sym(h_libsctp, "sctp_bindx", &ptr) == 0) {
p_sctp_bindx = ptr;
- inet_init_sctp();
- add_driver_entry(&sctp_inet_driver_entry);
if (erts_sys_ddll_sym(h_libsctp, "sctp_peeloff", &ptr) == 0) {
p_sctp_peeloff = ptr;
}
+ else p_sctp_peeloff = NULL;
+ if (erts_sys_ddll_sym(h_libsctp, "sctp_getladdrs", &ptr) == 0) {
+ p_sctp_getladdrs = ptr;
+ }
+ else p_sctp_getladdrs = NULL;
+ if (erts_sys_ddll_sym(h_libsctp, "sctp_freeladdrs", &ptr) == 0) {
+ p_sctp_freeladdrs = ptr;
+ }
+ else {
+ p_sctp_freeladdrs = NULL;
+ p_sctp_getladdrs = NULL;
+ }
+ if (erts_sys_ddll_sym(h_libsctp, "sctp_getpaddrs", &ptr) == 0) {
+ p_sctp_getpaddrs = ptr;
+ }
+ else p_sctp_getpaddrs = NULL;
+ if (erts_sys_ddll_sym(h_libsctp, "sctp_freepaddrs", &ptr) == 0) {
+ p_sctp_freepaddrs = ptr;
+ }
+ else {
+ p_sctp_freepaddrs = NULL;
+ p_sctp_getpaddrs = NULL;
+ }
+ inet_init_sctp();
+ add_driver_entry(&sctp_inet_driver_entry);
}
+ else p_sctp_bindx = NULL;
}
}
# endif
@@ -3860,6 +3935,74 @@ static int inet_get_address(int family, char* dst, inet_address* src, unsigned i
return -1;
}
+/* Same as the above, but take family from the address structure,
+** and advance the address pointer to the next address
+** according to the size of the current,
+** and return the resulting encoded size
+*/
+static int inet_address_to_erlang(char *dst, inet_address **src) {
+ short port;
+
+ switch ((*src)->sa.sa_family) {
+ case AF_INET:
+ if (dst) {
+ dst[0] = INET_AF_INET;
+ port = sock_ntohs((*src)->sai.sin_port);
+ put_int16(port, dst+1);
+ sys_memcpy(dst+1+2, (char *) &(*src)->sai.sin_addr, 4);
+ }
+ (*src) = (inet_address *) (&(*src)->sai + 1);
+ return 1 + 2 + 4;
+#if defined(HAVE_IN6) && defined(AF_INET6)
+ case AF_INET6:
+ if (dst) {
+ dst[0] = INET_AF_INET6;
+ port = sock_ntohs((*src)->sai6.sin6_port);
+ put_int16(port, dst+1);
+ sys_memcpy(dst+1+2, (char *) &(*src)->sai6.sin6_addr, 16);
+ }
+ (*src) = (inet_address *) (&(*src)->sai6 + 1);
+ return 1 + 2 + 16;
+#endif
+ default:
+ return -1;
+ }
+}
+
+/* Encode n encoded addresses from addrs in the result buffer
+*/
+static ErlDrvSizeT reply_inet_addrs
+(int n, inet_address *addrs, char **rbuf, ErlDrvSizeT rsize) {
+ inet_address *ia;
+ int i, s;
+ ErlDrvSizeT rlen;
+
+ if (IS_SOCKET_ERROR(n)) return ctl_error(sock_errno(), rbuf, rsize);
+ if (n == 0) return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
+
+ /* Calculate result length */
+ rlen = 1;
+ ia = addrs;
+ for (i = 0; i < n; i++) {
+ s = inet_address_to_erlang(NULL, &ia);
+ if (s < 0) break;
+ rlen += s;
+ }
+
+ if (rlen > rsize) (*rbuf) = ALLOC(rlen);
+
+ (*rbuf)[0] = INET_REP_OK;
+ rlen = 1;
+ ia = addrs;
+ for (i = 0; i < n; i++) {
+ s = inet_address_to_erlang((*rbuf)+rlen, &ia);
+ if (s < 0) break;
+ rlen += s;
+ }
+
+ return rlen;
+}
+
static void desc_close(inet_descriptor* desc)
{
if (desc->s != INVALID_SOCKET) {
@@ -7879,6 +8022,39 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
return ctl_reply(INET_REP_OK, tbuf, strlen(tbuf), rbuf, rsize);
}
+ case INET_REQ_GETPADDRS: {
+ DEBUGF(("inet_ctl(%ld): INET_GETPADDRS\r\n", (long)desc->port));
+
+ if (len != 4) return ctl_error(EINVAL, rbuf, rsize);
+
+ if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize);
+ if (! IS_BOUND(desc)) return ctl_xerror(EXBADSEQ, rbuf, rsize);
+
+#ifdef HAVE_SCTP
+ if (IS_SCTP(desc) && p_sctp_getpaddrs) {
+ struct sockaddr *sa;
+ Uint32 assoc_id;
+ int n;
+ ErlDrvSizeT rlen;
+
+ assoc_id = get_int32(buf);
+ n = p_sctp_getpaddrs(desc->s, assoc_id, &sa);
+ rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize);
+ if (n > 0) p_sctp_freepaddrs(sa);
+ return rlen;
+ }
+#endif
+ { /* Fallback to sock_peer */
+ inet_address addr;
+ unsigned int sz;
+ int i;
+
+ sz = sizeof(addr);
+ i = sock_peer(desc->s, (struct sockaddr *) &addr, &sz);
+ return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize);
+ }
+ }
+
case INET_REQ_PEER: { /* get peername */
char tbuf[sizeof(inet_address)];
inet_address peer;
@@ -7915,6 +8091,39 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
}
}
+ case INET_REQ_GETLADDRS: {
+ DEBUGF(("inet_ctl(%ld): INET_GETLADDRS\r\n", (long)desc->port));
+
+ if (len != 4) return ctl_error(EINVAL, rbuf, rsize);
+
+ if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize);
+ if (! IS_BOUND(desc)) return ctl_xerror(EXBADSEQ, rbuf, rsize);
+
+#ifdef HAVE_SCTP
+ if (IS_SCTP(desc) && p_sctp_getladdrs) {
+ struct sockaddr *sa;
+ Uint32 assoc_id;
+ int n;
+ ErlDrvSizeT rlen;
+
+ assoc_id = get_int32(buf);
+ n = p_sctp_getladdrs(desc->s, assoc_id, &sa);
+ rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize);
+ if (n > 0) p_sctp_freeladdrs(sa);
+ return rlen;
+ }
+#endif
+ { /* Fallback to sock_name */
+ inet_address addr;
+ unsigned int sz;
+ int i;
+
+ sz = sizeof(addr);
+ i = sock_name(desc->s, (struct sockaddr *) &addr, &sz);
+ return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize);
+ }
+ }
+
case INET_REQ_NAME: { /* get sockname */
char tbuf[sizeof(inet_address)];
inet_address name;
diff --git a/erts/preloaded/ebin/prim_inet.beam b/erts/preloaded/ebin/prim_inet.beam
index b0bef84e68..5d4be0b684 100644
Binary files a/erts/preloaded/ebin/prim_inet.beam and b/erts/preloaded/ebin/prim_inet.beam differ
diff --git a/erts/preloaded/src/prim_inet.erl b/erts/preloaded/src/prim_inet.erl
index fa621681f3..aa700c5194 100644
--- a/erts/preloaded/src/prim_inet.erl
+++ b/erts/preloaded/src/prim_inet.erl
@@ -41,8 +41,8 @@
getifaddrs/1, getiflist/1, ifget/3, ifset/3,
gethostname/1]).
-export([getservbyname/3, getservbyport/3]).
--export([peername/1, setpeername/2]).
--export([sockname/1, setsockname/2]).
+-export([peername/1, setpeername/2, peernames/1, peernames/2]).
+-export([sockname/1, setsockname/2, socknames/1, socknames/2]).
-export([attach/1, detach/1]).
-include("inet_sctp.hrl").
@@ -574,6 +574,36 @@ setpeername(S, undefined) when is_port(S) ->
{error,_}=Error -> Error
end.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%% PEERNAMES(insock()) -> {ok, [{IP, Port}, ...]} | {error, Reason}
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+peernames(S) when is_port(S) ->
+ peernames(S, undefined).
+
+peernames(S, #sctp_assoc_change{assoc_id=AssocId}) when is_port(S) ->
+ peernames(S, AssocId);
+peernames(S, AssocId)
+ when is_port(S), is_integer(AssocId);
+ is_port(S), AssocId =:= undefined ->
+ Q = get,
+ Type = [[sctp_assoc_id,0]],
+ case type_value(Q, Type, AssocId) of
+ true ->
+ case ctl_cmd
+ (S, ?INET_REQ_GETPADDRS,
+ enc_value(Q, Type, AssocId)) of
+ {ok,Addrs} ->
+ {ok,get_addrs(Addrs)};
+ Error ->
+ Error
+ end;
+ false ->
+ {error,einval}
+ end.
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% SOCKNAME(insock()) -> {ok, {IP, Port}} | {error, Reason}
@@ -599,6 +629,36 @@ setsockname(S, undefined) when is_port(S) ->
{error,_}=Error -> Error
end.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%% SOCKNAMES(insock()) -> {ok, [{IP, Port}, ...]} | {error, Reason}
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+socknames(S) when is_port(S) ->
+ socknames(S, undefined).
+
+socknames(S, #sctp_assoc_change{assoc_id=AssocId}) when is_port(S) ->
+ socknames(S, AssocId);
+socknames(S, AssocId)
+ when is_port(S), is_integer(AssocId);
+ is_port(S), AssocId =:= undefined ->
+ Q = get,
+ Type = [[sctp_assoc_id,0]],
+ case type_value(Q, Type, AssocId) of
+ true ->
+ case ctl_cmd
+ (S, ?INET_REQ_GETLADDRS,
+ enc_value(Q, Type, AssocId)) of
+ {ok,Addrs} ->
+ {ok,get_addrs(Addrs)};
+ Error ->
+ Error
+ end;
+ false ->
+ {error,einval}
+ end.
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% SETOPT(insock(), Opt, Value) -> ok | {error, Reason}
@@ -2213,6 +2273,12 @@ ip6_to_bytes({A,B,C,D,E,F,G,H}) ->
[?int16(A), ?int16(B), ?int16(C), ?int16(D),
?int16(E), ?int16(F), ?int16(G), ?int16(H)].
+get_addrs([]) ->
+ [];
+get_addrs([F,P1,P0|Addr]) ->
+ {IP,Addrs} = get_ip(F, Addr),
+ [{IP,?u16(P1, P0)}|get_addrs(Addrs)].
+
get_ip(?INET_AF_INET, Addr) -> get_ip4(Addr);
get_ip(?INET_AF_INET6, Addr) -> get_ip6(Addr).
--
cgit v1.2.3