split off facebook and other cron hooks from poller

[friendica.git] / include / security.php

diff --git a/include/security.php b/include/security.php
index c74a9b4a3cbe26d8ba919b6c44155e78612591db..6fbdd697f797158af297d57019e9bb3298a35161 100644 (file)
--- a/include/security.php
+++ b/include/security.php
@@ -28,8 +28,8 @@ function can_write_wall(&$a,$owner) {
                                AND `user`.`blockwall` = 0 AND `readonly` = 0  AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page-flags` = %d ) LIMIT 1",
                                intval($owner),
                                intval(remote_user()),
-                               intval(REL_VIP),
-                               intval(REL_BUD),
+                               intval(CONTACT_IS_FOLLOWER),
+                               intval(CONTACT_IS_FRIEND),
                                intval(PAGE_COMMUNITY)
                        );
                        if(count($r)) {
@@ -44,3 +44,74 @@ function can_write_wall(&$a,$owner) {
 
        return false;
 }
+
+
+function permissions_sql($owner_id,$remote_verified = false,$groups = null) {
+
+       $local_user = local_user();
+       $remote_user = remote_user();
+
+       /**
+        * Construct permissions
+        *
+        * default permissions - anonymous user
+        */
+
+       $sql = " AND allow_cid = '' 
+                        AND allow_gid = '' 
+                        AND deny_cid  = '' 
+                        AND deny_gid  = '' 
+       ";
+
+       /**
+        * Profile owner - everything is visible
+        */
+
+       if(($local_user) && ($local_user == $owner_id)) {
+               $sql = ''; 
+       }
+
+       /**
+        * Authenticated visitor. Unless pre-verified, 
+        * check that the contact belongs to this $owner_id
+        * and load the groups the visitor belongs to.
+        * If pre-verified, the caller is expected to have already
+        * done this and passed the groups into this function.
+        */
+
+       elseif($remote_user) {
+
+               if(! $remote_verified) {
+                       $r = q("SELECT id FROM contact WHERE id = %d AND uid = %d AND blocked = 0 LIMIT 1",
+                               intval($remote_user),
+                               intval($owner_id)
+                       );
+                       if(count($r)) {
+                               $remote_verified = true;
+                               $groups = init_groups_visitor($remote_user);
+                       }
+               }
+               if($remote_verified) {
+               
+                       $gs = '<<>>'; // should be impossible to match
+
+                       if(is_array($groups) && count($groups)) {
+                               foreach($groups as $g)
+                                       $gs .= '|<' . intval($g) . '>';
+                       } 
+
+                       $sql = sprintf(
+                               " AND ( allow_cid = '' OR allow_cid REGEXP '<%d>' ) 
+                                 AND ( deny_cid  = '' OR  NOT deny_cid REGEXP '<%d>' ) 
+                                 AND ( allow_gid = '' OR allow_gid REGEXP '%s' )
+                                 AND ( deny_gid  = '' OR NOT deny_gid REGEXP '%s') 
+                               ",
+                               intval($remote_user),
+                               intval($remote_user),
+                               dbesc($gs),
+                               dbesc($gs)
+                       );
+               }
+       }
+       return $sql;
+}
\ No newline at end of file