2005-12-05 10:36:39 +01:00
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/*****************************************************************************
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* udp.c:
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*****************************************************************************
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2006-02-11 11:42:48 +01:00
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* Copyright (C) 2004-2006 the VideoLAN team
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2007-04-15 10:20:45 +02:00
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* Copyright © 2006-2007 Rémi Denis-Courmont
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2006-09-07 21:49:30 +02:00
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*
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2005-12-05 10:36:39 +01:00
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* $Id$
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*
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* Authors: Laurent Aimar <fenrir@videolan.org>
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* Rémi Denis-Courmont <rem # videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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2006-01-13 00:10:04 +01:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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2005-12-05 10:36:39 +01:00
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <vlc/vlc.h>
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#include <errno.h>
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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2006-11-26 15:20:34 +01:00
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#include <vlc_network.h>
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2005-12-05 10:36:39 +01:00
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2005-12-05 11:00:14 +01:00
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#ifdef WIN32
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# if defined(UNDER_CE)
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# undef IP_MULTICAST_TTL
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# define IP_MULTICAST_TTL 3
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|
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# undef IP_ADD_MEMBERSHIP
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# define IP_ADD_MEMBERSHIP 5
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# endif
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2005-12-05 17:46:49 +01:00
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|
|
# define EAFNOSUPPORT WSAEAFNOSUPPORT
|
2006-02-11 11:42:48 +01:00
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# define if_nametoindex( str ) atoi( str )
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#else
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# include <unistd.h>
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2006-02-12 17:36:41 +01:00
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# ifdef HAVE_NET_IF_H
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# include <net/if.h>
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# endif
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2005-12-05 10:36:39 +01:00
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#endif
|
2005-12-05 11:00:14 +01:00
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#ifndef SOL_IP
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# define SOL_IP IPPROTO_IP
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#endif
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#ifndef SOL_IPV6
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# define SOL_IPV6 IPPROTO_IPV6
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#endif
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#ifndef IPPROTO_IPV6
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2007-09-09 21:20:39 +02:00
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# define IPPROTO_IPV6 41 /* IANA */
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#endif
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#ifndef SOL_DCCP
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# define SOL_DCCP IPPROTO_DCCP
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#endif
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#ifndef IPPROTO_DCCP
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# define IPPROTO_DCCP 33 /* IANA */
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#endif
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#ifndef SOL_UDPLITE
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# define SOL_UDPLITE IPPROTO_UDPLITE
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#endif
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#ifndef IPPROTO_UDPLITE
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# define IPPROTO_UDPLITE 136 /* IANA */
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#endif
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2007-09-15 18:50:14 +02:00
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#ifdef HAVE_LINUX_DCCP_H
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2007-09-09 21:20:39 +02:00
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# include <linux/dccp.h>
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# ifndef SOCK_DCCP /* provisional API */
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# define SOCK_DCCP 6
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# endif
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#endif
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#if defined (HAVE_NETINET_UDPLITE_H)
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# include <netinet/udplite.h>
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#elif defined (__linux__)
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/* still missing from glibc 2.6 */
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# define UDPLITE_SEND_CSCOV 10
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# define UDPLITE_RECV_CSCOV 11
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2005-12-05 10:36:39 +01:00
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#endif
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extern int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
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int i_protocol );
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2007-04-15 10:20:45 +02:00
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static int net_ListenSingle (vlc_object_t *obj, const char *host, int port,
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int family, int protocol)
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{
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struct addrinfo hints, *res;
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memset (&hints, 0, sizeof( hints ));
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hints.ai_family = family;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_flags = AI_PASSIVE;
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if (host && !*host)
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host = NULL;
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msg_Dbg (obj, "net: opening %s datagram port %d", host ?: "any", port);
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int val = vlc_getaddrinfo (obj, host, port, &hints, &res);
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if (val)
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{
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msg_Err (obj, "Cannot resolve %s port %d : %s", host, port,
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vlc_gai_strerror (val));
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return -1;
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}
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val = -1;
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for (const struct addrinfo *ptr = res; ptr != NULL; ptr = ptr->ai_next)
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{
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int fd = net_Socket (obj, ptr->ai_family, ptr->ai_socktype,
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protocol ?: ptr->ai_protocol);
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if (fd == -1)
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{
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msg_Dbg (obj, "socket error: %s", net_strerror (net_errno));
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continue;
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}
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if (ptr->ai_next != NULL)
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{
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#ifdef IPV6_V6ONLY
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if ((ptr->ai_family != AF_INET6)
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|| setsockopt (fd, SOL_IPV6, IPV6_V6ONLY, &(int){ 0 },
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sizeof (int)))
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#endif
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{
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msg_Err (obj, "Multiple network protocols present");
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msg_Err (obj, "Please select network protocol manually");
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}
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}
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/* Bind the socket */
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#if defined (WIN32) || defined (UNDER_CE)
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if (net_SockAddrIsMulticast (ptr->ai_addr, ptr->ai_addrlen)
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&& (sizeof (struct sockaddr_storage) >= ptr->ai_addrlen))
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{
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struct sockaddr_in6 dumb =
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|
|
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{
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.sin6_family = ptr->ai_addr->sa_family,
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.sin6_port = ((struct sockaddr_in *)(ptr->ai_addr))->sin_port
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};
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bind (fd, (struct sockaddr *)&dumb, ptr->ai_addrlen);
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}
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else
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#endif
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if (bind (fd, ptr->ai_addr, ptr->ai_addrlen))
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{
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msg_Err (obj, "socket bind error (%s)", net_strerror (net_errno));
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net_Close (fd);
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continue;
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}
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if (net_SockAddrIsMulticast (ptr->ai_addr, ptr->ai_addrlen)
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&& net_Subscribe (obj, fd, ptr->ai_addr, ptr->ai_addrlen))
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{
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net_Close (fd);
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continue;
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}
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val = fd;
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break;
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}
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vlc_freeaddrinfo (res);
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return val;
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}
|
2005-12-05 11:00:14 +01:00
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|
2006-11-24 21:10:36 +01:00
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2005-12-05 17:46:49 +01:00
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static int net_SetMcastHopLimit( vlc_object_t *p_this,
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int fd, int family, int hlim )
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2005-12-05 11:00:14 +01:00
|
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{
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int proto, cmd;
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|
2007-09-10 20:56:52 +02:00
|
|
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/* There is some confusion in the world whether IP_MULTICAST_TTL
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2005-12-05 11:00:14 +01:00
|
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* takes a byte or an int as an argument.
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* BSD seems to indicate byte so we are going with that and use
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* int as a fallback to be safe */
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switch( family )
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{
|
2006-11-24 17:35:23 +01:00
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#ifdef IP_MULTICAST_TTL
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2005-12-05 11:00:14 +01:00
|
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case AF_INET:
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proto = SOL_IP;
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cmd = IP_MULTICAST_TTL;
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break;
|
2006-11-24 17:35:23 +01:00
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#endif
|
2005-12-05 11:00:14 +01:00
|
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#ifdef IPV6_MULTICAST_HOPS
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case AF_INET6:
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proto = SOL_IPV6;
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cmd = IPV6_MULTICAST_HOPS;
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break;
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#endif
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default:
|
2005-12-05 17:46:49 +01:00
|
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|
msg_Warn( p_this, "%s", strerror( EAFNOSUPPORT ) );
|
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|
|
return VLC_EGENERIC;
|
2005-12-05 11:00:14 +01:00
|
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|
}
|
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if( setsockopt( fd, proto, cmd, &hlim, sizeof( hlim ) ) < 0 )
|
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|
{
|
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|
|
/* BSD compatibility */
|
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|
unsigned char buf;
|
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|
|
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|
buf = (unsigned char)(( hlim > 255 ) ? 255 : hlim);
|
2005-12-05 17:46:49 +01:00
|
|
|
if( setsockopt( fd, proto, cmd, &buf, sizeof( buf ) ) )
|
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|
|
return VLC_EGENERIC;
|
2005-12-05 11:00:14 +01:00
|
|
|
}
|
2006-11-24 17:35:23 +01:00
|
|
|
|
2005-12-05 17:46:49 +01:00
|
|
|
return VLC_SUCCESS;
|
2005-12-05 11:00:14 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
static int net_SetMcastOutIface (int fd, int family, int scope)
|
2005-12-05 17:46:49 +01:00
|
|
|
{
|
2006-10-20 21:16:25 +02:00
|
|
|
switch (family)
|
2005-12-05 17:46:49 +01:00
|
|
|
{
|
2006-10-20 21:16:25 +02:00
|
|
|
#ifdef IPV6_MULTICAST_IF
|
|
|
|
case AF_INET6:
|
|
|
|
return setsockopt (fd, SOL_IPV6, IPV6_MULTICAST_IF,
|
|
|
|
&scope, sizeof (scope));
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef __linux__
|
2005-12-05 17:46:49 +01:00
|
|
|
case AF_INET:
|
|
|
|
{
|
2006-10-20 21:16:25 +02:00
|
|
|
struct ip_mreqn req = { .imr_ifindex = scope };
|
2005-12-05 17:46:49 +01:00
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
return setsockopt (fd, SOL_IP, IP_MULTICAST_IF, &req,
|
|
|
|
sizeof (req));
|
2005-12-05 17:46:49 +01:00
|
|
|
}
|
2006-10-20 21:16:25 +02:00
|
|
|
#endif
|
|
|
|
}
|
2005-12-05 17:46:49 +01:00
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
errno = EAFNOSUPPORT;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static inline int net_SetMcastOutIPv4 (int fd, struct in_addr ipv4)
|
|
|
|
{
|
|
|
|
#ifdef IP_MULTICAST_IF
|
|
|
|
return setsockopt( fd, SOL_IP, IP_MULTICAST_IF, &ipv4, sizeof (ipv4));
|
|
|
|
#else
|
|
|
|
errno = EAFNOSUPPORT;
|
|
|
|
return -1;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int net_SetMcastOut (vlc_object_t *p_this, int fd, int family,
|
|
|
|
const char *iface, const char *addr)
|
|
|
|
{
|
|
|
|
if (iface != NULL)
|
|
|
|
{
|
|
|
|
int scope = if_nametoindex (iface);
|
|
|
|
if (scope == 0)
|
2006-02-11 11:42:48 +01:00
|
|
|
{
|
2006-11-24 21:10:36 +01:00
|
|
|
msg_Err (p_this, "invalid multicast interface: %s", iface);
|
2006-10-20 21:16:25 +02:00
|
|
|
return -1;
|
|
|
|
}
|
2006-02-11 11:42:48 +01:00
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
if (net_SetMcastOutIface (fd, family, scope) == 0)
|
|
|
|
return 0;
|
2006-02-11 11:42:48 +01:00
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
msg_Err (p_this, "%s: %s", iface, net_strerror (net_errno));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (addr != NULL)
|
|
|
|
{
|
|
|
|
if (family == AF_INET)
|
|
|
|
{
|
|
|
|
struct in_addr ipv4;
|
|
|
|
if (inet_pton (AF_INET, addr, &ipv4) <= 0)
|
2006-02-11 11:42:48 +01:00
|
|
|
{
|
2006-11-24 21:10:36 +01:00
|
|
|
msg_Err (p_this, "invalid IPv4 address for multicast: %s",
|
2006-10-20 21:16:25 +02:00
|
|
|
addr);
|
|
|
|
return -1;
|
2006-02-11 11:42:48 +01:00
|
|
|
}
|
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
if (net_SetMcastOutIPv4 (fd, ipv4) == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
msg_Err (p_this, "%s: %s", addr, net_strerror (net_errno));
|
|
|
|
}
|
2005-12-05 17:46:49 +01:00
|
|
|
}
|
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
return -1;
|
2005-12-05 17:46:49 +01:00
|
|
|
}
|
|
|
|
|
2006-09-07 21:49:30 +02:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
/**
|
|
|
|
* Old-style any-source multicast join.
|
|
|
|
* In use on Windows XP/2003 and older.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
net_IPv4Join (vlc_object_t *obj, int fd,
|
|
|
|
const struct sockaddr_in *src, const struct sockaddr_in *grp)
|
2006-11-05 20:20:52 +01:00
|
|
|
{
|
|
|
|
#ifdef IP_ADD_MEMBERSHIP
|
2006-11-24 21:10:36 +01:00
|
|
|
union
|
|
|
|
{
|
|
|
|
struct ip_mreq gr4;
|
|
|
|
# ifdef IP_ADD_SOURCE_MEMBERSHIP
|
|
|
|
struct ip_mreq_source gsr4;
|
|
|
|
# endif
|
|
|
|
} opt;
|
|
|
|
int cmd;
|
2006-11-26 23:17:41 +01:00
|
|
|
struct in_addr id = { .s_addr = INADDR_ANY };
|
2006-11-24 21:10:36 +01:00
|
|
|
socklen_t optlen;
|
|
|
|
|
|
|
|
/* Multicast interface IPv4 address */
|
2007-09-16 11:25:11 +02:00
|
|
|
char *iface = var_CreateGetNonEmptyString (obj, "miface-addr");
|
|
|
|
if ((iface != NULL)
|
|
|
|
&& (inet_pton (AF_INET, iface, &id) <= 0))
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
2007-09-16 11:25:11 +02:00
|
|
|
msg_Err (obj, "invalid multicast interface address %s", iface);
|
|
|
|
free (iface);
|
|
|
|
goto error;
|
2006-11-24 21:10:36 +01:00
|
|
|
}
|
2007-09-16 11:25:11 +02:00
|
|
|
free (iface);
|
2006-11-05 20:20:52 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
memset (&opt, 0, sizeof (opt));
|
|
|
|
if (src != NULL)
|
|
|
|
{
|
|
|
|
# ifdef IP_ADD_SOURCE_MEMBERSHIP
|
|
|
|
cmd = IP_ADD_SOURCE_MEMBERSHIP;
|
|
|
|
opt.gsr4.imr_multiaddr = grp->sin_addr;
|
|
|
|
opt.gsr4.imr_sourceaddr = src->sin_addr;
|
|
|
|
opt.gsr4.imr_interface = id;
|
|
|
|
optlen = sizeof (opt.gsr4);
|
|
|
|
# else
|
|
|
|
errno = ENOSYS;
|
|
|
|
goto error;
|
|
|
|
# endif
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
cmd = IP_ADD_MEMBERSHIP;
|
|
|
|
opt.gr4.imr_multiaddr = grp->sin_addr;
|
|
|
|
opt.gr4.imr_interface = id;
|
|
|
|
optlen = sizeof (opt.gr4);
|
|
|
|
}
|
|
|
|
|
|
|
|
msg_Dbg (obj, "IP_ADD_%sMEMBERSHIP multicast request",
|
|
|
|
(src != NULL) ? "SOURCE_" : "");
|
|
|
|
|
|
|
|
if (setsockopt (fd, SOL_IP, cmd, &opt, optlen) == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error:
|
|
|
|
#endif
|
|
|
|
|
|
|
|
msg_Err (obj, "cannot join IPv4 multicast group (%s)",
|
|
|
|
net_strerror (net_errno));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
net_IPv6Join (vlc_object_t *obj, int fd, const struct sockaddr_in6 *src)
|
|
|
|
{
|
|
|
|
#ifdef IPV6_JOIN_GROUP
|
|
|
|
struct ipv6_mreq gr6;
|
|
|
|
memset (&gr6, 0, sizeof (gr6));
|
|
|
|
gr6.ipv6mr_interface = src->sin6_scope_id;
|
|
|
|
memcpy (&gr6.ipv6mr_multiaddr, &src->sin6_addr, 16);
|
|
|
|
|
|
|
|
msg_Dbg (obj, "IPV6_JOIN_GROUP multicast request");
|
|
|
|
|
|
|
|
if (!setsockopt (fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &gr6, sizeof (gr6)))
|
|
|
|
return 0;
|
|
|
|
#else
|
|
|
|
errno = ENOSYS;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
msg_Err (obj, "cannot join IPv6 any-source multicast group (%s)",
|
|
|
|
net_strerror (net_errno));
|
|
|
|
return -1;
|
|
|
|
}
|
2006-11-05 20:20:52 +01:00
|
|
|
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
#if defined (WIN32) && !defined (MCAST_JOIN_SOURCE_GROUP)
|
|
|
|
/*
|
|
|
|
* I hate manual definitions: Error-prone. Portability hell.
|
|
|
|
* Developers shall use UP-TO-DATE compilers. Full point.
|
|
|
|
* If you remove the warning, you remove the whole ifndef.
|
|
|
|
*/
|
|
|
|
# warning Your C headers are out-of-date. Please update.
|
2006-11-05 20:20:52 +01:00
|
|
|
|
2007-03-03 09:44:55 +01:00
|
|
|
# define MCAST_JOIN_GROUP 41
|
2006-11-24 21:43:18 +01:00
|
|
|
struct group_req
|
|
|
|
{
|
2007-03-03 09:44:55 +01:00
|
|
|
ULONG gr_interface;
|
|
|
|
struct sockaddr_storage gr_group;
|
2006-11-24 21:43:18 +01:00
|
|
|
};
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
# define MCAST_JOIN_SOURCE_GROUP 45 /* from <ws2ipdef.h> */
|
|
|
|
struct group_source_req
|
|
|
|
{
|
|
|
|
uint32_t gsr_interface;
|
|
|
|
struct sockaddr_storage gsr_group;
|
|
|
|
struct sockaddr_storage gsr_source;
|
|
|
|
};
|
2006-11-24 21:43:18 +01:00
|
|
|
#endif
|
2006-11-24 21:10:36 +01:00
|
|
|
|
|
|
|
/**
|
|
|
|
* IP-agnostic multicast join,
|
|
|
|
* with fallback to old APIs, and fallback from SSM to ASM.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
net_SourceSubscribe (vlc_object_t *obj, int fd,
|
|
|
|
const struct sockaddr *src, socklen_t srclen,
|
|
|
|
const struct sockaddr *grp, socklen_t grplen)
|
|
|
|
{
|
|
|
|
int level, iid = 0;
|
|
|
|
|
2007-09-16 11:25:11 +02:00
|
|
|
char *iface = var_CreateGetNonEmptyString (obj, "miface");
|
2006-11-24 21:10:36 +01:00
|
|
|
if (iface != NULL)
|
|
|
|
{
|
2007-09-16 11:25:11 +02:00
|
|
|
iid = if_nametoindex (iface);
|
|
|
|
if (iid == 0)
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
2007-09-16 11:25:11 +02:00
|
|
|
msg_Err (obj, "invalid multicast interface: %s", iface);
|
|
|
|
free (iface);
|
|
|
|
return -1;
|
2006-11-05 20:20:52 +01:00
|
|
|
}
|
2006-11-24 21:10:36 +01:00
|
|
|
free (iface);
|
|
|
|
}
|
2006-11-05 20:20:52 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
switch (grp->sa_family)
|
|
|
|
{
|
2006-11-24 21:33:26 +01:00
|
|
|
#ifdef AF_INET6
|
2006-11-05 20:20:52 +01:00
|
|
|
case AF_INET6:
|
2006-11-24 21:10:36 +01:00
|
|
|
level = SOL_IPV6;
|
2006-11-26 23:29:33 +01:00
|
|
|
if (((const struct sockaddr_in6 *)grp)->sin6_scope_id)
|
|
|
|
iid = ((const struct sockaddr_in6 *)grp)->sin6_scope_id;
|
2006-11-24 21:10:36 +01:00
|
|
|
break;
|
2006-11-24 21:33:26 +01:00
|
|
|
#endif
|
2006-11-05 20:20:52 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
case AF_INET:
|
|
|
|
level = SOL_IP;
|
|
|
|
break;
|
2006-11-09 19:27:43 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
default:
|
|
|
|
errno = EAFNOSUPPORT;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2006-11-26 23:29:33 +01:00
|
|
|
if (src != NULL)
|
|
|
|
switch (src->sa_family)
|
|
|
|
{
|
|
|
|
#ifdef AF_INET6
|
|
|
|
case AF_INET6:
|
|
|
|
if (memcmp (&((const struct sockaddr_in6 *)src)->sin6_addr,
|
|
|
|
&in6addr_any, sizeof (in6addr_any)) == 0)
|
|
|
|
src = NULL;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
case AF_INET:
|
|
|
|
if (((const struct sockaddr_in *)src)->sin_addr.s_addr
|
|
|
|
== INADDR_ANY)
|
|
|
|
src = NULL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-11-24 21:33:26 +01:00
|
|
|
/* Agnostic ASM/SSM multicast join */
|
|
|
|
#ifdef MCAST_JOIN_SOURCE_GROUP
|
|
|
|
union
|
|
|
|
{
|
|
|
|
struct group_req gr;
|
|
|
|
struct group_source_req gsr;
|
|
|
|
} opt;
|
|
|
|
socklen_t optlen;
|
|
|
|
|
|
|
|
memset (&opt, 0, sizeof (opt));
|
|
|
|
|
|
|
|
if (src != NULL)
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
|
|
|
if ((grplen > sizeof (opt.gsr.gsr_group))
|
|
|
|
|| (srclen > sizeof (opt.gsr.gsr_source)))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
opt.gsr.gsr_interface = iid;
|
|
|
|
memcpy (&opt.gsr.gsr_source, src, srclen);
|
|
|
|
memcpy (&opt.gsr.gsr_group, grp, grplen);
|
|
|
|
optlen = sizeof (opt.gsr);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (grplen > sizeof (opt.gr.gr_group))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
opt.gr.gr_interface = iid;
|
|
|
|
memcpy (&opt.gr.gr_group, grp, grplen);
|
|
|
|
optlen = sizeof (opt.gr);
|
|
|
|
}
|
|
|
|
|
2006-11-24 21:33:26 +01:00
|
|
|
msg_Dbg (obj, "Multicast %sgroup join request", src ? "source " : "");
|
2006-11-24 21:10:36 +01:00
|
|
|
|
2007-09-10 20:56:52 +02:00
|
|
|
if (setsockopt (fd, level,
|
2006-11-24 21:33:26 +01:00
|
|
|
src ? MCAST_JOIN_SOURCE_GROUP : MCAST_JOIN_GROUP,
|
2006-11-24 21:10:36 +01:00
|
|
|
(void *)&opt, optlen) == 0)
|
|
|
|
return 0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Fallback to IPv-specific APIs */
|
2006-11-24 21:33:26 +01:00
|
|
|
if ((src != NULL) && (src->sa_family != grp->sa_family))
|
2006-11-24 21:10:36 +01:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
switch (grp->sa_family)
|
|
|
|
{
|
|
|
|
case AF_INET:
|
|
|
|
if ((grplen < sizeof (struct sockaddr_in))
|
2006-11-24 21:33:26 +01:00
|
|
|
|| ((src != NULL) && (srclen < sizeof (struct sockaddr_in))))
|
2006-11-05 20:20:52 +01:00
|
|
|
return -1;
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
if (net_IPv4Join (obj, fd, (const struct sockaddr_in *)src,
|
|
|
|
(const struct sockaddr_in *)grp) == 0)
|
|
|
|
return 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
#ifdef AF_INET6
|
|
|
|
case AF_INET6:
|
|
|
|
if ((grplen < sizeof (struct sockaddr_in6))
|
2006-11-24 21:33:26 +01:00
|
|
|
|| ((src != NULL) && (srclen < sizeof (struct sockaddr_in6))))
|
2006-11-24 21:10:36 +01:00
|
|
|
return -1;
|
|
|
|
|
2006-11-27 10:59:45 +01:00
|
|
|
/* IPv6-specific SSM API does not exist. So if we're here
|
|
|
|
* it means IPv6 SSM is not supported on this OS and we
|
|
|
|
* directly fallback to ASM */
|
2006-11-24 21:10:36 +01:00
|
|
|
|
|
|
|
if (net_IPv6Join (obj, fd, (const struct sockaddr_in6 *)grp) == 0)
|
|
|
|
return 0;
|
|
|
|
break;
|
2006-11-05 20:20:52 +01:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
msg_Err (obj, "Multicast group join error (%s)",
|
|
|
|
net_strerror (net_errno));
|
|
|
|
|
2006-11-24 21:33:26 +01:00
|
|
|
if (src != NULL)
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
|
|
|
msg_Warn (obj, "Trying ASM instead of SSM...");
|
|
|
|
return net_Subscribe (obj, fd, grp, grplen);
|
|
|
|
}
|
|
|
|
|
2006-11-05 20:20:52 +01:00
|
|
|
msg_Err (obj, "Multicast not supported");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
int net_Subscribe (vlc_object_t *obj, int fd,
|
|
|
|
const struct sockaddr *addr, socklen_t addrlen)
|
|
|
|
{
|
|
|
|
return net_SourceSubscribe (obj, fd, NULL, 0, addr, addrlen);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2007-08-16 22:05:06 +02:00
|
|
|
static int net_SetDSCP( int fd, uint8_t dscp )
|
2006-09-07 21:49:30 +02:00
|
|
|
{
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
if( getsockname( fd, (struct sockaddr *)&addr, &(socklen_t){ sizeof (addr) }) )
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
int level, cmd;
|
|
|
|
|
|
|
|
switch( addr.ss_family )
|
|
|
|
{
|
|
|
|
#ifdef IPV6_TCLASS
|
|
|
|
case AF_INET6:
|
|
|
|
level = SOL_IPV6;
|
|
|
|
cmd = IPV6_TCLASS;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
case AF_INET:
|
|
|
|
level = SOL_IP;
|
|
|
|
cmd = IP_TOS;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
#ifdef ENOPROTOOPT
|
|
|
|
errno = ENOPROTOOPT;
|
|
|
|
#endif
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return setsockopt( fd, level, cmd, &(int){ dscp }, sizeof (int));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2005-12-05 10:36:39 +01:00
|
|
|
/*****************************************************************************
|
2007-02-05 18:21:56 +01:00
|
|
|
* __net_ConnectDgram:
|
2005-12-05 10:36:39 +01:00
|
|
|
*****************************************************************************
|
2007-02-05 18:21:56 +01:00
|
|
|
* Open a datagram socket to send data to a defined destination, with an
|
|
|
|
* optional hop limit.
|
2005-12-05 10:36:39 +01:00
|
|
|
*****************************************************************************/
|
2007-02-05 18:21:56 +01:00
|
|
|
int __net_ConnectDgram( vlc_object_t *p_this, const char *psz_host, int i_port,
|
|
|
|
int i_hlim, int proto )
|
2005-12-05 10:36:39 +01:00
|
|
|
{
|
|
|
|
struct addrinfo hints, *res, *ptr;
|
|
|
|
int i_val, i_handle = -1;
|
|
|
|
vlc_bool_t b_unreach = VLC_FALSE;
|
|
|
|
|
|
|
|
if( i_port == 0 )
|
|
|
|
i_port = 1234; /* historical VLC thing */
|
|
|
|
|
2005-12-05 11:00:14 +01:00
|
|
|
if( i_hlim < 1 )
|
2005-12-05 18:30:14 +01:00
|
|
|
i_hlim = var_CreateGetInteger( p_this, "ttl" );
|
2005-12-05 11:00:14 +01:00
|
|
|
|
2005-12-05 10:36:39 +01:00
|
|
|
memset( &hints, 0, sizeof( hints ) );
|
|
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
|
|
|
|
|
|
msg_Dbg( p_this, "net: connecting to %s port %d", psz_host, i_port );
|
|
|
|
|
|
|
|
i_val = vlc_getaddrinfo( p_this, psz_host, i_port, &hints, &res );
|
|
|
|
if( i_val )
|
|
|
|
{
|
|
|
|
msg_Err( p_this, "cannot resolve %s port %d : %s", psz_host, i_port,
|
|
|
|
vlc_gai_strerror( i_val ) );
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
for( ptr = res; ptr != NULL; ptr = ptr->ai_next )
|
|
|
|
{
|
2006-10-20 21:16:25 +02:00
|
|
|
char *str;
|
|
|
|
int fd = net_Socket (p_this, ptr->ai_family, ptr->ai_socktype,
|
2007-02-05 18:21:56 +01:00
|
|
|
proto ?: ptr->ai_protocol);
|
2006-10-20 21:16:25 +02:00
|
|
|
if (fd == -1)
|
2005-12-05 10:36:39 +01:00
|
|
|
continue;
|
2006-10-20 21:16:25 +02:00
|
|
|
|
2005-12-05 10:36:39 +01:00
|
|
|
#if !defined( SYS_BEOS )
|
2006-10-20 21:16:25 +02:00
|
|
|
/* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s)
|
|
|
|
* to avoid packet loss caused by scheduling problems */
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &(int){ 0x80000 }, sizeof (int));
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &(int){ 0x80000 }, sizeof (int));
|
|
|
|
|
|
|
|
/* Allow broadcast sending */
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_BROADCAST, &(int){ 1 }, sizeof (int));
|
2005-12-05 10:36:39 +01:00
|
|
|
#endif
|
|
|
|
|
2005-12-05 18:48:21 +01:00
|
|
|
if( i_hlim > 0 )
|
2005-12-05 18:33:11 +01:00
|
|
|
net_SetMcastHopLimit( p_this, fd, ptr->ai_family, i_hlim );
|
2006-10-20 21:16:25 +02:00
|
|
|
|
2007-09-16 11:25:11 +02:00
|
|
|
str = var_CreateGetNonEmptyString (p_this, "miface");
|
2006-10-20 21:16:25 +02:00
|
|
|
if (str != NULL)
|
|
|
|
{
|
2007-09-16 11:25:11 +02:00
|
|
|
net_SetMcastOut (p_this, fd, ptr->ai_family, str, NULL);
|
2006-10-20 21:16:25 +02:00
|
|
|
free (str);
|
|
|
|
}
|
|
|
|
|
2007-09-16 11:25:11 +02:00
|
|
|
str = var_CreateGetNonEmptyString (p_this, "miface-addr");
|
2006-10-20 21:16:25 +02:00
|
|
|
if (str != NULL)
|
2005-12-05 17:46:49 +01:00
|
|
|
{
|
2007-09-16 11:25:11 +02:00
|
|
|
net_SetMcastOut (p_this, fd, ptr->ai_family, NULL, str);
|
2006-10-20 21:16:25 +02:00
|
|
|
free (str);
|
2005-12-05 17:46:49 +01:00
|
|
|
}
|
2005-12-05 11:00:14 +01:00
|
|
|
|
2006-10-20 21:16:25 +02:00
|
|
|
net_SetDSCP (fd, var_CreateGetInteger (p_this, "dscp"));
|
|
|
|
|
2005-12-05 10:36:39 +01:00
|
|
|
if( connect( fd, ptr->ai_addr, ptr->ai_addrlen ) == 0 )
|
|
|
|
{
|
|
|
|
/* success */
|
|
|
|
i_handle = fd;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if defined( WIN32 ) || defined( UNDER_CE )
|
|
|
|
if( WSAGetLastError () == WSAENETUNREACH )
|
|
|
|
#else
|
|
|
|
if( errno == ENETUNREACH )
|
|
|
|
#endif
|
|
|
|
b_unreach = VLC_TRUE;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
msg_Warn( p_this, "%s port %d : %s", psz_host, i_port,
|
|
|
|
strerror( errno ) );
|
|
|
|
net_Close( fd );
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
vlc_freeaddrinfo( res );
|
|
|
|
|
|
|
|
if( i_handle == -1 )
|
|
|
|
{
|
|
|
|
if( b_unreach )
|
|
|
|
msg_Err( p_this, "Host %s port %d is unreachable", psz_host,
|
|
|
|
i_port );
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return i_handle;
|
|
|
|
}
|
|
|
|
|
2006-11-05 20:20:52 +01:00
|
|
|
|
2005-12-05 10:36:39 +01:00
|
|
|
/*****************************************************************************
|
2007-02-05 17:32:31 +01:00
|
|
|
* __net_OpenDgram:
|
2005-12-05 10:36:39 +01:00
|
|
|
*****************************************************************************
|
2007-02-05 17:32:31 +01:00
|
|
|
* OpenDgram a datagram socket and return a handle
|
2005-12-05 10:36:39 +01:00
|
|
|
*****************************************************************************/
|
2007-02-05 17:32:31 +01:00
|
|
|
int __net_OpenDgram( vlc_object_t *obj, const char *psz_bind, int i_bind,
|
|
|
|
const char *psz_server, int i_server,
|
|
|
|
int family, int protocol )
|
2005-12-05 10:36:39 +01:00
|
|
|
{
|
2007-04-15 10:20:45 +02:00
|
|
|
if ((psz_server == NULL) || (psz_server[0] == '\0'))
|
|
|
|
return net_ListenSingle (obj, psz_bind, i_bind, family, protocol);
|
2006-11-24 21:10:36 +01:00
|
|
|
|
2007-04-15 10:20:45 +02:00
|
|
|
msg_Dbg (obj, "net: connecting to [%s]:%d from [%s]:%d",
|
|
|
|
psz_server, i_server, psz_bind, i_bind);
|
2007-01-05 12:21:12 +01:00
|
|
|
|
2007-04-15 10:20:45 +02:00
|
|
|
struct addrinfo hints, *loc, *rem;
|
|
|
|
int val;
|
2006-11-24 21:10:36 +01:00
|
|
|
|
|
|
|
memset (&hints, 0, sizeof (hints));
|
2007-02-05 17:32:31 +01:00
|
|
|
hints.ai_family = family;
|
2006-11-24 21:10:36 +01:00
|
|
|
hints.ai_socktype = SOCK_DGRAM;
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
val = vlc_getaddrinfo (obj, psz_server, i_server, &hints, &rem);
|
|
|
|
if (val)
|
2006-11-23 12:12:49 +01:00
|
|
|
{
|
2006-11-24 21:10:36 +01:00
|
|
|
msg_Err (obj, "cannot resolve %s port %d : %s", psz_bind, i_bind,
|
|
|
|
vlc_gai_strerror (val));
|
|
|
|
return -1;
|
2006-11-23 12:12:49 +01:00
|
|
|
}
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2007-08-18 19:37:16 +02:00
|
|
|
hints.ai_flags = AI_PASSIVE;
|
2006-11-24 21:10:36 +01:00
|
|
|
val = vlc_getaddrinfo (obj, psz_bind, i_bind, &hints, &loc);
|
|
|
|
if (val)
|
2006-11-23 12:22:15 +01:00
|
|
|
{
|
2006-11-24 21:10:36 +01:00
|
|
|
msg_Err (obj, "cannot resolve %s port %d : %s", psz_bind, i_bind,
|
|
|
|
vlc_gai_strerror (val));
|
|
|
|
vlc_freeaddrinfo (rem);
|
|
|
|
return -1;
|
2006-11-23 12:22:15 +01:00
|
|
|
}
|
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
for (struct addrinfo *ptr = loc; ptr != NULL; ptr = ptr->ai_next)
|
|
|
|
{
|
|
|
|
int fd = net_Socket (obj, ptr->ai_family, ptr->ai_socktype,
|
2007-02-05 17:32:31 +01:00
|
|
|
protocol ?: ptr->ai_protocol);
|
2006-11-24 21:10:36 +01:00
|
|
|
if (fd == -1)
|
|
|
|
continue; // usually, address family not supported
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
#ifdef SO_REUSEPORT
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_REUSEPORT, &(int){ 1 }, sizeof (int));
|
|
|
|
#endif
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
#ifdef SO_RCVBUF
|
|
|
|
/* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s)
|
|
|
|
* to avoid packet loss caused in case of scheduling hiccups */
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_RCVBUF,
|
|
|
|
(void *)&(int){ 0x80000 }, sizeof (int));
|
|
|
|
setsockopt (fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
|
(void *)&(int){ 0x80000 }, sizeof (int));
|
|
|
|
#endif
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
#if defined (WIN32) || defined (UNDER_CE)
|
|
|
|
if (net_SockAddrIsMulticast (ptr->ai_addr, ptr->ai_addrlen)
|
|
|
|
&& (sizeof (struct sockaddr_storage) >= ptr->ai_addrlen))
|
|
|
|
{
|
|
|
|
// This works for IPv4 too - don't worry!
|
|
|
|
struct sockaddr_in6 dumb =
|
|
|
|
{
|
|
|
|
.sin6_family = ptr->ai_addr->sa_family,
|
|
|
|
.sin6_port = ((struct sockaddr_in *)(ptr->ai_addr))->sin_port
|
|
|
|
};
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2006-11-24 21:10:36 +01:00
|
|
|
bind (fd, (struct sockaddr *)&dumb, ptr->ai_addrlen);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
if (bind (fd, ptr->ai_addr, ptr->ai_addrlen))
|
|
|
|
{
|
|
|
|
net_Close (fd);
|
|
|
|
continue;
|
|
|
|
}
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2007-02-05 18:04:55 +01:00
|
|
|
val = -1;
|
|
|
|
for (struct addrinfo *ptr2 = rem; ptr2 != NULL; ptr2 = ptr2->ai_next)
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
|
|
|
if ((ptr2->ai_family != ptr->ai_family)
|
|
|
|
|| (ptr2->ai_socktype != ptr->ai_socktype)
|
|
|
|
|| (ptr2->ai_protocol != ptr->ai_protocol))
|
|
|
|
continue;
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2007-02-05 18:04:55 +01:00
|
|
|
if (net_SockAddrIsMulticast (ptr->ai_addr, ptr->ai_addrlen)
|
|
|
|
? net_SourceSubscribe (obj, fd,
|
|
|
|
ptr2->ai_addr, ptr2->ai_addrlen,
|
|
|
|
ptr->ai_addr, ptr->ai_addrlen)
|
|
|
|
: connect (fd, ptr2->ai_addr, ptr2->ai_addrlen))
|
2006-11-24 21:10:36 +01:00
|
|
|
{
|
2007-02-05 18:04:55 +01:00
|
|
|
msg_Err (obj, "cannot connect to %s port %d: %s",
|
|
|
|
psz_server, i_server, net_strerror (net_errno));
|
|
|
|
continue;
|
2006-11-24 21:10:36 +01:00
|
|
|
}
|
2007-02-05 18:04:55 +01:00
|
|
|
val = fd;
|
|
|
|
break;
|
2006-11-24 21:10:36 +01:00
|
|
|
}
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2007-02-05 18:04:55 +01:00
|
|
|
if (val != -1)
|
|
|
|
break;
|
2005-12-05 10:36:39 +01:00
|
|
|
|
2007-02-05 18:04:55 +01:00
|
|
|
close (fd);
|
2005-12-05 10:36:39 +01:00
|
|
|
}
|
|
|
|
|
2007-02-05 18:04:55 +01:00
|
|
|
vlc_freeaddrinfo (rem);
|
|
|
|
vlc_freeaddrinfo (loc);
|
|
|
|
return val;
|
2005-12-05 10:36:39 +01:00
|
|
|
}
|
2007-02-05 18:04:55 +01:00
|
|
|
|
2007-09-09 21:20:39 +02:00
|
|
|
|
|
|
|
/**
|
|
|
|
* net_SetCSCov:
|
|
|
|
* Sets the send and receive checksum coverage of a socket:
|
|
|
|
* @param fd socket
|
|
|
|
* @param sendcov payload coverage of sent packets (bytes), -1 for full
|
|
|
|
* @param recvcov minimum payload coverage of received packets, -1 for full
|
|
|
|
*/
|
|
|
|
int net_SetCSCov (int fd, int sendcov, int recvcov)
|
|
|
|
{
|
|
|
|
int type;
|
|
|
|
|
|
|
|
if (getsockopt (fd, SOL_SOCKET, SO_TYPE,
|
|
|
|
&type, &(socklen_t){ sizeof (type) }))
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
|
|
|
|
switch (type)
|
|
|
|
{
|
|
|
|
#ifdef UDPLITE_RECV_CSCOV
|
|
|
|
case SOCK_DGRAM: /* UDP-Lite */
|
|
|
|
if (sendcov == -1)
|
|
|
|
sendcov = 0;
|
|
|
|
else
|
|
|
|
sendcov += 8; /* partial */
|
|
|
|
if (setsockopt (fd, SOL_UDPLITE, UDPLITE_SEND_CSCOV, &sendcov,
|
|
|
|
sizeof (sendcov)))
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
|
|
|
|
if (recvcov == -1)
|
|
|
|
recvcov = 0;
|
|
|
|
else
|
|
|
|
recvcov += 8;
|
|
|
|
if (setsockopt (fd, SOL_UDPLITE, UDPLITE_RECV_CSCOV,
|
|
|
|
&recvcov, sizeof (recvcov)))
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
#endif
|
|
|
|
#ifdef DCCP_SOCKOPT_SEND_CSCOV
|
|
|
|
case SOCK_DCCP: /* DCCP and its ill-named socket type */
|
|
|
|
if ((sendcov == -1) || (sendcov > 56))
|
|
|
|
sendcov = 0;
|
|
|
|
else
|
|
|
|
sendcov = (sendcov + 3) / 4;
|
|
|
|
if (setsockopt (fd, SOL_DCCP, DCCP_SOCKOPT_SEND_CSCOV,
|
|
|
|
&sendcov, sizeof (sendcov)))
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
|
2007-09-09 22:04:14 +02:00
|
|
|
if ((recvcov == -1) || (recvcov > 56))
|
|
|
|
recvcov = 0;
|
2007-09-09 21:20:39 +02:00
|
|
|
else
|
2007-09-09 22:04:14 +02:00
|
|
|
recvcov = (recvcov + 3) / 4;
|
2007-09-09 21:20:39 +02:00
|
|
|
if (setsockopt (fd, SOL_DCCP, DCCP_SOCKOPT_RECV_CSCOV,
|
|
|
|
&recvcov, sizeof (recvcov)))
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
}
|