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Prevent a crash in res_pjsip_dtmf_info.c

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This change makes sure that a content type header exists before
checking the contents of the header against known SIP INFO DTMF content
types.
........

Merged revisions 398206 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@398207 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2013-09-03 18:09:02 +00:00
parent 32d325439f
commit e5542ab1e7
1 changed files with 3 additions and 2 deletions
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5
res/res_pjsip_dtmf_info.c
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@@ -34,8 +34,9 @@
static int is_media_type(pjsip_rx_data *rdata, char *subtype)
{
return !pj_strcmp2(&rdata->msg_info.ctype->media.type, "application") &&
!pj_strcmp2(&rdata->msg_info.ctype->media.subtype, subtype);
return rdata->msg_info.ctype
&& !pj_strcmp2(&rdata->msg_info.ctype->media.type, "application")
&& !pj_strcmp2(&rdata->msg_info.ctype->media.subtype, subtype);
}
static void send_response(struct ast_sip_session *session,