subscribe_to_feed: do not subscribe to feeds which can't be downloaded

functions.js

@@ -1304,6 +1304,9 @@ function subscribeToFeed() {
 
 			try {
 
+				if (!transport.responseXML)
+					console.log(transport.responseText);
+
 				var result = transport.responseXML.getElementsByTagName('result')[0];
 				var rc = parseInt(result.getAttribute('code'));
 	
@@ -1323,8 +1326,10 @@ function subscribeToFeed() {
 					}
 					break;
 				case 2:
+					alert(__("Specified URL seems to be invalid."));
+					break;
 				case 3:
-					alert(__("Can't subscribe to the specified URL."));
+					alert(__("Specified URL doesn't seem to contain any feeds."));
 					break;
 				case 4:
 					new Ajax.Request("backend.php", {
@@ -1349,6 +1354,9 @@ function subscribeToFeed() {
 						}
 					});
 					break;
+				case 5:
+					alert(__("Couldn't download the specified URL."));
+					break;
 				case 0:
 					alert(__("You are already subscribed to this feed."));
 					break;

functions.php

@@ -351,7 +351,7 @@
 		}
 	}
 
-	function fetch_file_contents($url, $type) {
+	function fetch_file_contents($url, $type = false) {
 		if (USE_CURL_FOR_ICONS) {
 			$ch = curl_init($url);
 
@@ -2917,12 +2917,14 @@
 	 *                 4 - URL content is HTML which contains multiple feeds.
 	 *                     Here you should call extractfeedurls in rpc-backend
 	 *                     to get all possible feeds.
+	 *                 5 - Couldn't download the URL content.
 	 */
 	function subscribe_to_feed($link, $url, $cat_id = 0, 
 			$auth_login = '', $auth_pass = '') {
 
 		$url = fix_url($url);
 		if (!validate_feed_url($url)) return 2;
+		if (!fetch_file_contents($url)) return 5;
 
 		if (url_is_html($url)) {
 			$feedUrls = get_feeds_from_html($url);