Fixes an issue with the Newchannel AMI event during the Masquerading process.

Fixes an issue with the Newchannel AMI event during the Masquerading process,
where no Newchannel AMI event was generated for the psuedo channel used during
the masquerading process.

(closes issue #17987)
Reported by: RadicAlish
Patches: 
      newchannel.patch.txt uploaded by RadicAlish (license 1122)
      Tested by: RadicAlish

      Review: https://reviewboard.asterisk.org/r/937/


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@289094 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/channel.c

@@ -714,7 +714,7 @@ struct ast_channel *ast_channel_alloc(int needqueue, int state, const char *cid_
 	int flags;
 	struct varshead *headp;
 	va_list ap1, ap2;
-	char *tech = "";
+	char *tech = "", *tech2 = NULL;
 
 	/* If shutting down, don't allocate any new channels */
 	if (shutting_down) {
@@ -815,7 +815,7 @@ alertpipe_failed:
 	tmp->cid.cid_num = ast_strdup(cid_num);
 	
 	if (!ast_strlen_zero(name_fmt)) {
-		char *slash;
+		char *slash, *slash2;
 		/* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call.
 		 * And they all use slightly different formats for their name string.
 		 * This means, to set the name here, we have to accept variable args, and call the string_field_build from here.
@@ -830,6 +830,10 @@ alertpipe_failed:
 		va_end(ap2);
 		tech = ast_strdupa(tmp->name);
 		if ((slash = strchr(tech, '/'))) {
+			if ((slash2 = strchr(slash + 1, '/'))) {
+				tech2 = slash + 1;
+				*slash2 = '\0';
+			}
 			*slash = '\0';
 		}
 	}
@@ -886,7 +890,7 @@ alertpipe_failed:
 	 * proper and correct place to make this call, but you sure do have to pass
 	 * a lot of data into this func to do it here!
 	 */
-	if (ast_get_channel_tech(tech)) {
+	if (ast_get_channel_tech(tech) || (tech2 && ast_get_channel_tech(tech2))) {
 		manager_event(EVENT_FLAG_CALL, "Newchannel",
 		      "Channel: %s\r\n"
 		      "State: %s\r\n"