Commit c3bc9e66 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont

Add SDP generation helper with a bunch of would-be conformance fixes

(at least: i= is mandatory, TTL notation is forbidden for IPv6)
parent 55cfe8ef
......@@ -261,6 +261,7 @@ SOURCES_libvlc_common = \
stream_output/announce.c \
stream_output/profiles.c \
stream_output/sap.c \
stream_output/sdp.c \
osd/osd.c \
osd/osd_parser.c \
osd/osd_text.c \
......
/*****************************************************************************
* sdp.c : SDP creation helpers
*****************************************************************************
* Copyright © 2007 Rémi Denis-Courmont
* $Id$
*
* Authors: Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
# include <vlc/vlc.h>
# include <string.h>
# include <vlc_network.h>
# include <vlc_charset.h>
# define MAXSDPADDRESS 47
static
char *AddressToSDP (const struct sockaddr *addr, socklen_t addrlen, char *buf)
{
const char *ttl = NULL;
strcpy (buf, "IN IP* ");
switch (addr->sa_family)
{
case AF_INET:
{
if (net_SockAddrIsMulticast (addr, addrlen))
ttl = "/255"; // obsolete in RFC4566, dummy value
buf[5] = '4';
break;
}
#ifdef AF_INET6
case AF_INET6:
buf[5] = '6';
break;
#endif
default:
return NULL;
}
if (vlc_getnameinfo (addr, addrlen, buf + 4, MAXSDPADDRESS - 4, NULL,
NI_NUMERICHOST))
return NULL;
if (ttl != NULL)
strcat (buf, ttl);
return buf;
}
char *StartSDP (const char *name,
const struct sockaddr *orig, socklen_t origlen,
const struct sockaddr *addr, socklen_t addrlen)
{
uint64_t t = NTPtime64 ();
char *sdp, machine[MAXSDPADDRESS], conn[MAXSDPADDRESS];
if (strchr (name, '\r') || strchr (name, '\n') || !IsUTF8 (name)
|| (AddressToSDP ((struct sockaddr *)&orig, origlen, machine) == NULL)
|| (AddressToSDP ((struct sockaddr *)&addr, addrlen, conn) == NULL))
return NULL;
if (asprintf (&sdp, "v=0\r\n"
"o=- "I64Fu" "I64Fu" %s\r\n"
"s=%s\r\n"
"i=N/A\r\n" // must be there even if useless
// no URL, email and phone here */
"c=%s\r\n"
// bandwidth not specified
"t= 0 0" // one dummy time span
// no repeating
// no time zone adjustment (silly idea anyway)
// no encryption key (deprecated)
"a=tool:"PACKAGE_STRING"\r\n"
"a=recvonly\r\n"
"a=type:broadcast\r\n"
"a=charset:UTF-8\r\n",
/* o= */ t, t, machine,
/* s= */ name,
/* c= */ conn) == -1)
return NULL;
return sdp;
}
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