Merged revisions 51781 via svnmerge from

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

........
r51781 | russell | 2007-01-23 16:04:01 -0600 (Tue, 23 Jan 2007) | 6 lines

Fix some bugs in process_message().  The manager session lock needs to be held
when sending some sort of response, or calling one of the manager action
callbacks.  This resolves an issue where people using the GUI would get random
crashes when they start clicking around a lot.
(issue #8711, reported and debugged by zandbelt)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@51787 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/manager.c

@@ -2068,28 +2068,39 @@ static int process_message(struct mansession *s, const struct message *m)
 		ast_log(LOG_DEBUG, "Manager received command '%s'\n", action);
 
 	if (ast_strlen_zero(action)) {
+		ast_mutex_lock(&s->__lock);
 		astman_send_error(s, m, "Missing action in request");
+		ast_mutex_unlock(&s->__lock);
 		return 0;
 	}
 
 	if (!s->authenticated && strcasecmp(action, "Login") && strcasecmp(action, "Logoff") && strcasecmp(action, "Challenge")) {
+		ast_mutex_lock(&s->__lock);
 		astman_send_error(s, m, "Permission denied");
+		ast_mutex_unlock(&s->__lock);
 		return 0;
 	}
 	ast_mutex_lock(&actionlock);	
 	for (tmp = first_action ; tmp; tmp = tmp->next) {
 		if (strcasecmp(action, tmp->action))
 			continue;
+		ast_mutex_lock(&s->__lock);
 		if ((s->writeperm & tmp->authority) == tmp->authority) {
-			if (tmp->func(s, m))	/* error */
+			if (tmp->func(s, m)) {	/* error */
+				ast_mutex_unlock(&s->__lock);
 				return -1;
+			}
 		} else
 			astman_send_error(s, m, "Permission denied");
+		ast_mutex_unlock(&s->__lock);
 		break;
 	}
 	ast_mutex_unlock(&actionlock);
-	if (!tmp)
+	if (!tmp) {
+		ast_mutex_lock(&s->__lock);
 		astman_send_error(s, m, "Invalid/unknown command. Use Action: ListCommands to show available commands.");
+		ast_mutex_unlock(&s->__lock);
+	}
 	if (ret)
 		return ret;
 	/* Once done with our message, deliver any pending events */