X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;ds=inline;f=include%2Fsecurity.php;h=c74a9b4a3cbe26d8ba919b6c44155e78612591db;hb=2c63b65e3c66bcb0a047ce51c04d23376aa6c525;hp=29334549b1fa543667091cc4032a5d85cbb94d04;hpb=e0045a43e22082e0a47fd57288105a21311e911a;p=friendica.git

diff --git a/include/security.php b/include/security.php
index 29334549b1..c74a9b4a3c 100644
--- a/include/security.php
+++ b/include/security.php
@@ -1,20 +1,46 @@
 <?php
 
 function can_write_wall(&$a,$owner) {
-        if((! (local_user())) && (! (remote_user())))
-                return false;
-        if((local_user()) && ($_SESSION['uid'] == $owner))
-                return true;
-
-        $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `id` = %d AND `blocked` = 0 AND `pending` = 0 
-		AND `readonly` = 0  AND `rel` IN ( %d , %d ) LIMIT 1",
-                intval($owner),
-                intval($_SESSION['visitor_id']),
-		intval(DIRECTION_OUT),
-		intval(DIRECTION_BOTH)
-        );
-        if(count($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 {
+			$r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` LEFT JOIN `user` on `user`.`uid` = `contact`.`uid` 
+				WHERE `contact`.`uid` = %d AND `contact`.`id` = %d AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0 
+				AND `user`.`blockwall` = 0 AND `readonly` = 0  AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page-flags` = %d ) LIMIT 1",
+				intval($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;
 }