+function dfrn_poll_content(&$a) {
+
+ if(x($_GET,'dfrn_id'))
+ $dfrn_id = $a->config['dfrn_poll_dfrn_id'] = $_GET['dfrn_id'];
+ if(x($_GET,'type'))
+ $type = $a->config['dfrn_poll_type'] = $_GET['type'];
+ if(x($_GET,'last_update'))
+ $last_update = $a->config['dfrn_poll_last_update'] = $_GET['last_update'];
+
+
+ if($dfrn_id != '*') {
+ // initial communication from external contact
+ $hash = random_string();
+
+ $status = 0;
+
+ $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
+
+ $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
+ VALUES( '%s', '%s', '%s', '%s', '%s' ) ",
+ dbesc($hash),
+ dbesc(notags(trim($_GET['dfrn_id']))),
+ intval(time() + 60 ),
+ dbesc($type),
+ dbesc($last_update)
+ );
+
+ $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
+ dbesc($_GET['dfrn_id']));
+ if((! count($r)) || (! strlen($r[0]['prvkey'])))
+ $status = 1;
+
+ $challenge = '';