<?php
function can_write_wall(&$a,$owner) {
- if((! (local_user())) && (! (remote_user())))
- return false;
- $uid = get_uid();
- if(($uid) && ($uid === $owner))
- return true;
-
- $r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` LEFT JOIN `user` on `user`.`uid` = `contact`.`uid`
- WHERE `contact`.`uid` = %d AND `contact`.`id` = %d AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
- AND `readonly` = 0 AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page_flags` = %d ) LIMIT 1",
- intval($owner),
- intval($_SESSION['visitor_id']),
- intval(REL_VIP),
- intval(REL_BUD),
- intval(PAGE_COMMUNITY)
- );
- if(count($r))
- return true;
- return false;
+ static $verified = 0;
+
+ if((! (local_user())) && (! (remote_user())))
+ return false;
+
+ $uid = local_user();
+
+ if(($uid) && ($uid == $owner)) {
+ return true;
+ }
+
+ if(remote_user()) {
+
+ // user remembered decision and avoid a DB lookup for each and every display item
+ // DO NOT use this function if there are going to be multiple owners
+
+ if($verified === 2)
+ return true;
+ elseif($verified === 1)
+ return false;
+ else {
+ $r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` LEFT JOIN `user` on `user`.`uid` = `contact`.`uid`
+ WHERE `contact`.`uid` = %d AND `contact`.`id` = %d AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
+ AND `readonly` = 0 AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page-flags` = %d ) LIMIT 1",
+ intval($owner),
+ intval(remote_user()),
+ intval(REL_VIP),
+ intval(REL_BUD),
+ intval(PAGE_COMMUNITY)
+ );
+ if(count($r)) {
+ $verified = 2;
+ return true;
+ }
+ else {
+ $verified = 1;
+ }
+ }
+ }
+
+ return false;
}