friendica/src/Repository/PermissionSet.php
2020-02-09 15:45:36 +01:00

184 lines
5.1 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Repository;
use Friendica\BaseRepository;
use Friendica\Collection;
use Friendica\Database\Database;
use Friendica\Model;
use Friendica\Model\Group;
use Friendica\Network\HTTPException;
use Friendica\Util\ACLFormatter;
use Psr\Log\LoggerInterface;
class PermissionSet extends BaseRepository
{
/** @var int Virtual permission set id for public permission */
const PUBLIC = 0;
protected static $table_name = 'permissionset';
protected static $model_class = Model\PermissionSet::class;
protected static $collection_class = Collection\PermissionSets::class;
/** @var ACLFormatter */
private $aclFormatter;
public function __construct(Database $dba, LoggerInterface $logger, ACLFormatter $aclFormatter)
{
parent::__construct($dba, $logger);
$this->aclFormatter = $aclFormatter;
}
/**
* @param array $data
* @return Model\PermissionSet
*/
protected function create(array $data)
{
return new Model\PermissionSet($this->dba, $this->logger, $data);
}
/**
* @param array $condition
* @return Model\PermissionSet
* @throws \Friendica\Network\HTTPException\NotFoundException
*/
public function selectFirst(array $condition)
{
if (isset($condition['id']) && !$condition['id']) {
return $this->create([
'id' => self::PUBLIC,
'uid' => $condition['uid'] ?? 0,
'allow_cid' => '',
'allow_gid' => '',
'deny_cid' => '',
'deny_gid' => '',
]);
}
return parent::selectFirst($condition);
}
/**
* @param array $condition
* @param array $params
* @return Collection\PermissionSets
* @throws \Exception
*/
public function select(array $condition = [], array $params = [])
{
return parent::select($condition, $params);
}
/**
* @param array $condition
* @param array $params
* @param int|null $max_id
* @param int|null $since_id
* @param int $limit
* @return Collection\PermissionSets
* @throws \Exception
*/
public function selectByBoundaries(array $condition = [], array $params = [], int $max_id = null, int $since_id = null, int $limit = self::LIMIT)
{
return parent::selectByBoundaries($condition, $params, $max_id, $since_id, $limit);
}
/**
* Fetch the id of a given permission set. Generate a new one when needed
*
* @param int $uid
* @param string|null $allow_cid Allowed contact IDs - empty = everyone
* @param string|null $allow_gid Allowed group IDs - empty = everyone
* @param string|null $deny_cid Disallowed contact IDs - empty = no one
* @param string|null $deny_gid Disallowed group IDs - empty = no one
* @return int id
* @throws \Exception
*/
public function getIdFromACL(
int $uid,
string $allow_cid = null,
string $allow_gid = null,
string $deny_cid = null,
string $deny_gid = null
) {
$allow_cid = $this->aclFormatter->sanitize($allow_cid);
$allow_gid = $this->aclFormatter->sanitize($allow_gid);
$deny_cid = $this->aclFormatter->sanitize($deny_cid);
$deny_gid = $this->aclFormatter->sanitize($deny_gid);
// Public permission
if (!$allow_cid && !$allow_gid && !$deny_cid && !$deny_gid) {
return self::PUBLIC;
}
$condition = [
'uid' => $uid,
'allow_cid' => $allow_cid,
'allow_gid' => $allow_gid,
'deny_cid' => $deny_cid,
'deny_gid' => $deny_gid
];
try {
$permissionset = $this->selectFirst($condition);
} catch(HTTPException\NotFoundException $exception) {
$permissionset = $this->insert($condition);
}
return $permissionset->id;
}
/**
* Returns a permission set collection for a given contact
*
* @param integer $contact_id Contact id of the visitor
* @param integer $uid User id whom the items belong, used for ownership check.
*
* @return Collection\PermissionSets
* @throws \Exception
*/
public function selectByContactId($contact_id, $uid)
{
$groups = [];
if ($this->dba->exists('contact', ['id' => $contact_id, 'uid' => $uid, 'blocked' => false])) {
$groups = Group::getIdsByContactId($contact_id);
}
$group_str = '<<>>'; // should be impossible to match
foreach ($groups as $group_id) {
$group_str .= '|<' . preg_quote($group_id) . '>';
}
$contact_str = '<' . $contact_id . '>';
$condition = ["`uid` = ? AND (NOT (`deny_cid` REGEXP ? OR deny_gid REGEXP ?)
AND (allow_cid REGEXP ? OR allow_gid REGEXP ? OR (allow_cid = '' AND allow_gid = '')))",
$uid, $contact_str, $group_str, $contact_str, $group_str];
return $this->select($condition);
}
}