- function pubsub() {
- $mode = $this->dbh->escape_string($_REQUEST['hub_mode']);
- if (!$mode) $mode = $this->dbh->escape_string($_REQUEST['hub.mode']);
-
- $feed_id = (int) $this->dbh->escape_string($_REQUEST['id']);
- $feed_url = $this->dbh->escape_string($_REQUEST['hub_topic']);
-
- if (!$feed_url) $feed_url = $this->dbh->escape_string($_REQUEST['hub.topic']);
-
- if (!PUBSUBHUBBUB_ENABLED) {
- header('HTTP/1.0 404 Not Found');
- echo "404 Not found (Disabled by server)";
- return;
- }
-
- // TODO: implement hub_verifytoken checking
- // TODO: store requested rel=self or whatever for verification
- // (may be different from stored feed url) e.g. http://url/ or http://url
-
- $result = $this->dbh->query("SELECT feed_url FROM ttrss_feeds
- WHERE id = '$feed_id'");
-
- if ($this->dbh->num_rows($result) != 0) {
-
- $check_feed_url = $this->dbh->fetch_result($result, 0, "feed_url");
-
- // ignore url checking for the time being
- if ($check_feed_url && (true || $check_feed_url == $feed_url || !$feed_url)) {
- if ($mode == "subscribe") {
-
- $this->dbh->query("UPDATE ttrss_feeds SET pubsub_state = 2
- WHERE id = '$feed_id'");
-
- print $_REQUEST['hub_challenge'];
- return;
-
- } else if ($mode == "unsubscribe") {
-
- $this->dbh->query("UPDATE ttrss_feeds SET pubsub_state = 0
- WHERE id = '$feed_id'");
-
- print $_REQUEST['hub_challenge'];
- return;
-
- } else if (!$mode) {
-
- // Received update ping, schedule feed update.
- //update_rss_feed($feed_id, true, true);
-
- $this->dbh->query("UPDATE ttrss_feeds SET
- last_update_started = '1970-01-01',
- last_updated = '1970-01-01' WHERE id = '$feed_id'");
-
- }
- } else {
- header('HTTP/1.0 404 Not Found');
- echo "404 Not found (URL check failed)";
- }
- } else {
- header('HTTP/1.0 404 Not Found');
- echo "404 Not found (Feed not found)";
- }
-
- }
-