diff options
Diffstat (limited to 'engine/lib')
| -rw-r--r-- | engine/lib/access.php | 169 |
1 files changed, 92 insertions, 77 deletions
diff --git a/engine/lib/access.php b/engine/lib/access.php index 303152816..ab4580bae 100644 --- a/engine/lib/access.php +++ b/engine/lib/access.php @@ -411,7 +411,43 @@ function get_write_access_array($user_id = 0, $site_id = 0, $flush = false) { } /** - * Creates a new access collection. + * Can the user write to the access collection? + * + * Hook into the access:collections:write, user to change this. + * + * Respects access control disabling for admin users and {@see elgg_set_ignore_access()} + * + * @see get_write_access_array() + * + * @param int $collection_id The collection id + * @param mixed $user_guid The user GUID to check for. Defaults to logged in user. + * @return bool + */ +function can_edit_access_collection($collection_id, $user_guid = null) { + if ($user_guid) { + $user = get_entity((int) $user_guid); + } else { + $user = get_loggedin_user(); + } + + $collection = get_access_collection($collection_id); + + if (!($user instanceof ElggUser) || !$collection) { + return false; + } + + $write_access = get_write_access_array($user->getGUID(), null, true); + + // don't ignore access when checking users. + if ($user_guid) { + return array_key_exists($collection_id, $write_access); + } else { + return elgg_get_ignore_access() || array_key_exists($collection_id, $write_access); + } +} + +/** + * Creates a new access control collection owned by the specified user. * * Access colletions allow plugins and users to create granular access * for entities. @@ -448,6 +484,7 @@ function create_access_collection($name, $owner_guid = 0, $site_guid = 0) { SET name = '{$name}', owner_guid = {$owner_guid}, site_guid = {$site_guid}"; + if (!$id = insert_data($q)) { return false; } @@ -483,37 +520,31 @@ function create_access_collection($name, $owner_guid = 0, $site_guid = 0) { function update_access_collection($collection_id, $members) { global $CONFIG; - $collection_id = (int) $collection_id; - $members = (is_array($members)) ? $members : array(); + $acl = get_access_collection($collection_id); - $collections = get_write_access_array(); + if (!$acl) { + return false; + } - if (array_key_exists($collection_id, $collections)) { - $cur_members = get_members_of_access_collection($collection_id, true); - $cur_members = (is_array($cur_members)) ? $cur_members : array(); + $members = (is_array($members)) ? $members : array(); - $remove_members = array_diff($cur_members, $members); - $add_members = array_diff($members, $cur_members); + $cur_members = get_members_of_access_collection($collection_id, true); + $cur_members = (is_array($cur_members)) ? $cur_members : array(); - $params = array( - 'collection_id' => $collection_id, - 'members' => $members, - 'add_members' => $add_members, - 'remove_members' => $remove_members - ); + $remove_members = array_diff($cur_members, $members); + $add_members = array_diff($members, $cur_members); - foreach ($add_members as $guid) { - add_user_to_access_collection($guid, $collection_id); - } + $result = true; - foreach ($remove_members as $guid) { - remove_user_from_access_collection($guid, $collection_id); - } + foreach ($add_members as $guid) { + $result = $result && add_user_to_access_collection($guid, $collection_id); + } - return true; + foreach ($remove_members as $guid) { + $result = $result && remove_user_from_access_collection($guid, $collection_id); } - return false; + return $result; } /** @@ -527,27 +558,25 @@ function update_access_collection($collection_id, $members) { * @see update_access_collection() */ function delete_access_collection($collection_id) { + global $CONFIG; + $collection_id = (int) $collection_id; - $collections = get_write_access_array(null, null, TRUE); $params = array('collection_id' => $collection_id); if (!elgg_trigger_plugin_hook('access:collections:deletecollection', 'collection', $params, true)) { return false; } - if (array_key_exists($collection_id, $collections)) { - global $CONFIG; - $query = "delete from {$CONFIG->dbprefix}access_collection_membership" - . " where access_collection_id = {$collection_id}"; - delete_data($query); + // Deleting membership doesn't affect result of deleting ACL. + $q = "DELETE FROM {$CONFIG->dbprefix}access_collection_membership + WHERE access_collection_id = {$collection_id}"; + delete_data($q); - $query = "delete from {$CONFIG->dbprefix}access_collections where id = {$collection_id}"; - delete_data($query); - return true; - } else { - return false; - } + $q = "DELETE FROM {$CONFIG->dbprefix}access_collections + WHERE id = {$collection_id}"; + $result = delete_data($q); + return $result; } /** @@ -584,45 +613,33 @@ function get_access_collection($collection_id) { * @see remove_user_from_access_collection() */ function add_user_to_access_collection($user_guid, $collection_id) { + global $CONFIG; + $collection_id = (int) $collection_id; $user_guid = (int) $user_guid; - $collections = get_write_access_array(); + $user = get_user($user_guid); - if (!($collection = get_access_collection($collection_id))) { - return false; - } + $collection = get_access_collection($collection_id); - $user = get_user($user_guid); - if (!$user) { + if (!($user instanceof Elgguser) || !$collection) { return false; } - // to add someone to a collection, the user must be a member of the collection or - // no one must own it - if ((array_key_exists($collection_id, $collections) || $collection->owner_guid == 0)) { - $result = true; - } else { - $result = false; - } - $params = array( 'collection_id' => $collection_id, - 'collection' => $collection, 'user_guid' => $user_guid ); - $result = elgg_trigger_plugin_hook('access:collections:add_user', 'collection', $params, $result); - if ($result == false) { + if (!elgg_trigger_plugin_hook('access:collections:add_user', 'collection', $params, true)) { return false; } try { - global $CONFIG; - $query = "insert into {$CONFIG->dbprefix}access_collection_membership" - . " set access_collection_id = {$collection_id}, user_guid = {$user_guid}"; - insert_data($query); + $q = "INSERT INTO {$CONFIG->dbprefix}access_collection_membership + SET access_collection_id = {$collection_id}, + user_guid = {$user_guid}"; + insert_data($q); } catch (DatabaseException $e) { - // nothing. return false; } @@ -640,34 +657,32 @@ function add_user_to_access_collection($user_guid, $collection_id) { * @return true|false Depending on success */ function remove_user_from_access_collection($user_guid, $collection_id) { + global $CONFIG; + $collection_id = (int) $collection_id; $user_guid = (int) $user_guid; - $collections = get_write_access_array(); - $user = $user = get_user($user_guid); + $user = get_user($user_guid); - if (!($collection = get_access_collection($collection_id))) { + $collection = get_access_collection($collection_id); + + if (!($user instanceof Elgguser) || !$collection) { return false; } - if ((array_key_exists($collection_id, $collections) || $collection->owner_guid == 0) && $user) { - global $CONFIG; - $params = array( - 'collection_id' => $collection_id, - 'user_guid' => $user_guid - ); - - if (!elgg_trigger_plugin_hook('access:collections:remove_user', 'collection', $params, true)) { - return false; - } - - delete_data("delete from {$CONFIG->dbprefix}access_collection_membership " - . "where access_collection_id = {$collection_id} and user_guid = {$user_guid}"); - - return true; + $params = array( + 'collection_id' => $collection_id, + 'user_guid' => $user_guid + ); + if (!elgg_trigger_plugin_hook('access:collections:remove_user', 'collection', $params, true)) { + return false; } - return false; + $q = "DELETE FROM {$CONFIG->dbprefix}access_collection_membership + WHERE access_collection_id = {$collection_id} + AND user_guid = {$user_guid}"; + + return delete_data($q); } /** @@ -972,4 +987,4 @@ elgg_register_event_handler('init', 'system', 'access_init', 9999); elgg_register_plugin_hook_handler('permissions_check', 'all', 'elgg_override_permissions_hook'); elgg_register_plugin_hook_handler('container_permissions_check', 'all', 'elgg_override_permissions_hook'); -elgg_register_plugin_hook('unit_test', 'system', 'access_test'); +elgg_register_plugin_hook_handler('unit_test', 'system', 'access_test'); |