From e33a1fdac280c4e192aac3719f1558da32255fab Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.spb.ru>
Date: Thu, 15 Jun 2006 03:55:54 +0100
Subject: [PATCH] viewfeed: check if feed exists and report error if not

---
 backend.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/backend.php b/backend.php
index 7421f781d..b77575723 100644
--- a/backend.php
+++ b/backend.php
@@ -721,6 +721,15 @@
 			}
 		}
 
+		$result = db_query($link,
+			"SELECT id FROM ttrss_feeds WHERE id = '$feed' LIMIT 1");
+		
+		if (db_num_rows($result) == 0) {
+			print "<div align='center'>
+				Could not display feed: feed not found.</div>";
+			return;
+		}
+
 		if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 	
 			$result = db_query($link, "SELECT rtl_content FROM ttrss_feeds