X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FModel%2FPhoto.php;h=0e3661b0f33e4110915908a8542353e35823112b;hb=6bb418c5a7cdd71d28a8a572059efb14401b70bd;hp=68665126fb44c21aa26420ff3147bf87219e5d2b;hpb=85772f02cab76ba9666d7ba0775e5f04037755de;p=friendica.git

diff --git a/src/Model/Photo.php b/src/Model/Photo.php
index 68665126fb..0e3661b0f3 100644
--- a/src/Model/Photo.php
+++ b/src/Model/Photo.php
@@ -16,6 +16,7 @@ use Friendica\Database\DBA;
 use Friendica\Database\DBStructure;
 use Friendica\Model\Storage\IStorage;
 use Friendica\Object\Image;
+use Friendica\Protocol\DFRN;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
 use Friendica\Util\Security;
@@ -129,12 +130,23 @@ class Photo extends BaseObject
 	 */
 	public static function getPhoto($resourceid, $scale = 0)
 	{
-		$r = self::selectFirst(["uid"], ["resource-id" => $resourceid]);
+		$r = self::selectFirst(["uid", "allow_cid", "allow_gid", "deny_cid", "deny_gid"], ["resource-id" => $resourceid]);
 		if ($r === false) {
 			return false;
 		}
+		$uid = $r["uid"];
+
+		// This is the first place, when retrieving just a photo, that we know who owns the photo.
+		// Check if the photo is public (empty allow and deny means public), if so, skip auth attempt, if not
+		// make sure that the requester's session is appropriately authenticated to that user
+		// otherwise permissions checks done by getPermissionsSQLByUserId() won't work correctly
+		if (!empty($r["allow_cid"]) || !empty($r["allow_gid"]) || !empty($r["deny_cid"]) || !empty($r["deny_gid"])) {
+			$r = DBA::selectFirst("user", ["nickname"], ["uid" => $uid], []);
+			// this will either just return (if auth all ok) or will redirect and exit (starting over)
+			DFRN::autoRedir(self::getApp(), $r["nickname"]);
+		}
 
-		$sql_acl = Security::getPermissionsSQLByUserId($r["uid"]);
+		$sql_acl = Security::getPermissionsSQLByUserId($uid);
 
 		$conditions = [
 			"`resource-id` = ? AND `scale` <= ? " . $sql_acl,