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chan_sip: Fix an issue where an incompatible audio format may be added to SDP.

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If preferred codecs included any non-audio format the code would
mistakenly add the audio format, even if it was not a joint capability
with the remote side.

(closes issue ASTERISK-21131)
Reported by: nbougues
Patches:
	patch_unsupported_codec_1.8.patch uploaded by nbougues (license 6470)
........

Merged revisions 401497 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 401498 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/12@401499 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2013-10-23 11:14:49 +00:00
parent ecb2759060
commit de0ec33701
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
channels/chan_sip.c
View File

@@ -13358,10 +13358,11 @@ static enum sip_result add_sdp(struct sip_request *resp, struct sip_pvt *p, int
/* Unless otherwise configured, the prefcaps is added before the peer's
* configured codecs.
*/
if (!ast_test_flag(&p->flags[2], SIP_PAGE3_IGNORE_PREFCAPS) && ast_format_cap_has_joint(tmpcap, p->prefcaps)) {
if (!ast_test_flag(&p->flags[2], SIP_PAGE3_IGNORE_PREFCAPS)) {
ast_format_cap_iter_start(p->prefcaps);
while (!(ast_format_cap_iter_next(p->prefcaps, &tmp_fmt))) {
if (AST_FORMAT_GET_TYPE(tmp_fmt.id) != AST_FORMAT_TYPE_AUDIO) {
if (AST_FORMAT_GET_TYPE(tmp_fmt.id) != AST_FORMAT_TYPE_AUDIO ||
!ast_format_cap_iscompatible(tmpcap, &tmp_fmt)) {
continue;
}
add_codec_to_sdp(p, &tmp_fmt, &m_audio, &a_audio, debug, &min_audio_packet_size, &max_audio_packet_size);