add rpc method to export feedbrowser data; update schema

modules/backend-rpc.php

@@ -834,6 +834,38 @@
 			return;
 		}
 
+		if ($subop == "fbExport") {
+
+			// TODO: change to _POST
+			$access_key = db_escape_string($_REQUEST["key"]);
+
+			// TODO: rate limit checking using last_connected
+			$result = db_query($link, "SELECT id FROM ttrss_linked_instances
+				WHERE access_key = '$access_key'");
+
+			if (db_num_rows($result) == 1) {
+
+				$instance_id = db_fetch_result($result, 0, "id");
+
+				$result = db_query($link, "SELECT feed_url, title, subscribers
+					FROM ttrss_feedbrowser_cache ORDER BY subscribers DESC LIMIT 100");
+
+				$feeds = array();
+
+				while ($line = db_fetch_assoc($result)) {
+					array_push($feeds, $line);
+				}
+
+				db_query($link, "UPDATE ttrss_linked_instances SET last_connected = NOW()
+					WHERE id = '$instance_id'");
+
+				print json_encode(array("feeds" => $feeds));
+			} else {
+				print json_encode(array("error" => array("code" => 6)));
+			}
+			return;
+		}
+
 		print json_encode(array("error" => array("code" => 7,
 			"message" => "Unknown method: $subop")));
 	}