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Merged revisions 160308 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/trunk

................
  r160308 | tilghman | 2008-12-02 11:56:24 -0600 (Tue, 02 Dec 2008) | 17 lines
  
  Merged revisions 160297 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r160297 | tilghman | 2008-12-02 11:42:09 -0600 (Tue, 02 Dec 2008) | 10 lines
    
    When the text does not match exactly (e.g. RTP/SAVP), then the %n conversion
    fails, and the resulting integer is garbage.  Thus, we must initialize the
    integer and check it afterwards for success.
    (closes issue #14000)
     Reported by: folke
     Patches: 
           asterisk-sipbg-sscanf-1.4.22.diff uploaded by folke (license 626)
           asterisk-sipbg-sscanf-1.6.0.1.diff uploaded by folke (license 626)
           asterisk-sipbg-sscanf-trunk-r159896.diff uploaded by folke (license 626)
  ........
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@160325 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.6.1
Tilghman Lesher 18 years ago
parent 6674ef2c22
commit a99affdaf8
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File

17
channels/chan_sip.c
Unescape View File

@ -6916,8 +6916,9 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req, int t38action
int text = FALSE;
numberofports = 1;
if ((sscanf(m, "audio %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2) ||
(sscanf(m, "audio %d RTP/AVP %n", &x, &len) == 1)) {
len = -1;
if ((sscanf(m, "audio %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2 && len > 0) ||
(sscanf(m, "audio %d RTP/AVP %n", &x, &len) == 1 && len > 0)) {
audio = TRUE;
numberofmediastreams++;
/* Found audio stream in this media definition */
@ -6932,8 +6933,8 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req, int t38action
ast_verbose("Found RTP audio format %d\n", codec);
ast_rtp_set_m_type(newaudiortp, codec);
}
} else if ((sscanf(m, "video %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2) ||
(sscanf(m, "video %d RTP/AVP %n", &x, &len) == 1)) {
} else if ((sscanf(m, "video %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2 && len > 0) ||
(sscanf(m, "video %d RTP/AVP %n", &x, &len) == 1 && len >= 0)) {
video = TRUE;
p->novideo = FALSE;
numberofmediastreams++;
@ -6948,8 +6949,8 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req, int t38action
ast_verbose("Found RTP video format %d\n", codec);
ast_rtp_set_m_type(newvideortp, codec);
}
} else if ((sscanf(m, "text %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2) ||
(sscanf(m, "text %d RTP/AVP %n", &x, &len) == 1)) {
} else if ((sscanf(m, "text %d/%d RTP/AVP %n", &x, &numberofports, &len) == 2 && len > 0) ||
(sscanf(m, "text %d RTP/AVP %n", &x, &len) == 1 && len > 0)) {
text = TRUE;
p->notext = FALSE;
numberofmediastreams++;
@ -6964,8 +6965,8 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req, int t38action
ast_verbose("Found RTP text format %d\n", codec);
ast_rtp_set_m_type(newtextrtp, codec);
}
} else if (p->udptl && ( (sscanf(m, "image %d udptl t38%n", &x, &len) == 1) ||
(sscanf(m, "image %d UDPTL t38%n", &x, &len) == 1) )) {
} else if (p->udptl && ( (sscanf(m, "image %d udptl t38%n", &x, &len) == 1 && len > 0) ||
(sscanf(m, "image %d UDPTL t38%n", &x, &len) == 1 && len > 0) )) {
if (debug)
ast_verbose("Got T.38 offer in SDP in dialog %s\n", p->callid);
udptlportno = x;

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