1 /*****************************************************************************
2 * sdp.c : SDP creation helpers
3 *****************************************************************************
4 * Copyright © 2007 Rémi Denis-Courmont
7 * Authors: Rémi Denis-Courmont
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
27 # include <vlc_network.h>
28 # include <vlc_charset.h>
30 # include "stream_output.h"
32 # define MAXSDPADDRESS 47
35 char *AddressToSDP (const struct sockaddr *addr, socklen_t addrlen, char *buf)
37 const char *ttl = NULL;
38 strcpy (buf, "IN IP* ");
40 switch (addr->sa_family)
44 if (net_SockAddrIsMulticast (addr, addrlen))
45 ttl = "/255"; // obsolete in RFC4566, dummy value
60 if (vlc_getnameinfo (addr, addrlen, buf + 4, MAXSDPADDRESS - 4, NULL,
71 char *StartSDP (const char *name,
72 const struct sockaddr *orig, socklen_t origlen,
73 const struct sockaddr *addr, socklen_t addrlen)
75 uint64_t t = NTPtime64 ();
76 char *sdp, machine[MAXSDPADDRESS], conn[MAXSDPADDRESS];
78 if (strchr (name, '\r') || strchr (name, '\n') || !IsUTF8 (name)
79 || (AddressToSDP ((struct sockaddr *)&orig, origlen, machine) == NULL)
80 || (AddressToSDP ((struct sockaddr *)&addr, addrlen, conn) == NULL))
83 if (asprintf (&sdp, "v=0\r\n"
84 "o=- "I64Fu" "I64Fu" %s\r\n"
86 "i=N/A\r\n" // must be there even if useless
87 // no URL, email and phone here */
89 // bandwidth not specified
90 "t= 0 0" // one dummy time span
92 // no time zone adjustment (silly idea anyway)
93 // no encryption key (deprecated)
94 "a=tool:"PACKAGE_STRING"\r\n"
96 "a=type:broadcast\r\n"
97 "a=charset:UTF-8\r\n",
98 /* o= */ t, t, machine,
100 /* c= */ conn) == -1)