[Asterisk-cvs] asterisk rtp.c,1.86,1.87

[markster at lists.digium.com]

Update of /usr/cvsroot/asterisk
In directory mongoose.digium.com:/tmp/cvs-serv28856

Modified Files:
	rtp.c 
Log Message:
Be sure we still check for proper buffer length


Index: rtp.c
===================================================================
RCS file: /usr/cvsroot/asterisk/rtp.c,v
retrieving revision 1.86
retrieving revision 1.87
diff -u -d -r1.86 -r1.87
--- rtp.c	31 Aug 2004 00:16:28 -0000	1.86
+++ rtp.c	31 Aug 2004 05:09:20 -0000	1.87
@@ -452,6 +452,11 @@
 		hdrlen += (rtpheader[3] & 0xffff) << 2;
 	}
 
+	if (res < hdrlen) {
+		ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
+		return &null_frame;
+	}
+
 #if 0
 	printf("Got RTP packet from %s:%d (type %d, seq %d, ts %d, len = %d)\n", ast_inet_ntoa(iabuf, sizeof(iabuf), sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
 #endif