Merged revisions 101693 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r101693 | russell | 2008-01-31 18:32:49 -0600 (Thu, 31 Jan 2008) | 8 lines

Add some more sanity checking on IAX2 dial strings for the case that no peer
or hostname was provided, which is the one part of the dial string that is
absolutely required.  If it's not there, bail out.

(closes issue #11897)
Reported by sokhapkin
Patch by me

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@101694 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -3369,6 +3369,11 @@ static int iax2_call(struct ast_channel *c, char *dest, int timeout)
 	tmpstr = ast_strdupa(dest);
 	parse_dial_string(tmpstr, &pds);
 
+	if (ast_strlen_zero(pds.peer)) {
+		ast_log(LOG_WARNING, "No peer provided in the IAX2 dial string '%s'\n", dest);
+		return -1;
+	}
+
 	if (!pds.exten)
 		pds.exten = defaultrdest;
 
@@ -9503,16 +9508,15 @@ static struct ast_channel *iax2_request(const char *type, int format, void *data
 	tmpstr = ast_strdupa(data);
 	parse_dial_string(tmpstr, &pds);
 
+	if (ast_strlen_zero(pds.peer)) {
+		ast_log(LOG_WARNING, "No peer provided in the IAX2 dial string '%s'\n", (char *) data);
+		return NULL;
+	}
+	       
 	memset(&cai, 0, sizeof(cai));
 	cai.capability = iax2_capability;
 
 	ast_copy_flags(&cai, &globalflags, IAX_NOTRANSFER | IAX_TRANSFERMEDIA | IAX_USEJITTERBUF | IAX_FORCEJITTERBUF);
-
-	if (!pds.peer) {
-		ast_log(LOG_WARNING, "No peer given\n");
-		return NULL;
-	}
-	       
 	
 	/* Populate our address from the given */
 	if (create_addr(pds.peer, NULL, &sin, &cai)) {
@@ -10881,6 +10885,11 @@ static int cache_get_callno_locked(const char *data)
 	tmpstr = ast_strdupa(data);
 	parse_dial_string(tmpstr, &pds);
 
+	if (ast_strlen_zero(pds.peer)) {
+		ast_log(LOG_WARNING, "No peer provided in the IAX2 dial string '%s'\n", data);
+		return -1;
+	}
+
 	/* Populate our address from the given */
 	if (create_addr(pds.peer, NULL, &sin, &cai))
 		return -1;
@@ -11319,8 +11328,11 @@ static int iax2_devicestate(void *data)
 
 	memset(&pds, 0, sizeof(pds));
 	parse_dial_string(tmp, &pds);
-	if (ast_strlen_zero(pds.peer))
+
+	if (ast_strlen_zero(pds.peer)) {
+		ast_log(LOG_WARNING, "No peer provided in the IAX2 dial string '%s'\n", (char *) data);
 		return res;
+	}
 	
 	ast_debug(3, "Checking device state for device %s\n", pds.peer);