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Prevent crash when an SDP offer is received with an encrypted video stream when support for video is disabled and res_srtp is loaded. 

(closes issue ASTERISK-19202)
Reported by: Catalin Sanda
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Merged revisions 351504 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 351505 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351506 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp 2012-01-19 21:13:02 +00:00
parent 16adf6de8c
commit ddf421bd5c
1 changed files with 6 additions and 0 deletions
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6
channels/chan_sip.c
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@ -30275,6 +30275,12 @@ static int setup_srtp(struct sip_srtp **srtp)
static int process_crypto(struct sip_pvt *p, struct ast_rtp_instance *rtp, struct sip_srtp **srtp, const char *a)
{
/* If no RTP instance exists for this media stream don't bother processing the crypto line */
if (!rtp) {
ast_debug(3, "Received offer with crypto line for media stream that is not enabled\n");
return FALSE;
}
if (strncasecmp(a, "crypto:", 7)) {
return FALSE;
}