friendica/src/Model/PermissionSet.php

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<?php
/**
* @file src/Model/PermissionSet.php
*/
namespace Friendica\Model;
use Friendica\BaseObject;
use Friendica\Database\DBA;
require_once 'include/dba.php';
/**
* @brief functions for interacting with the permission set of an object (item, photo, event, ...)
*/
class PermissionSet extends BaseObject
{
/**
* Fetch the id of a given permission set. Generate a new one when needed
*
* @param array $postarray The array from an item, picture or event post
* @return id
*/
public static function fetchIDForPost($postarray)
{
$condition = ['uid' => $postarray['uid'],
'allow_cid' => self::sortPermissions(defaults($postarray, 'allow_cid', '')),
'allow_gid' => self::sortPermissions(defaults($postarray, 'allow_gid', '')),
'deny_cid' => self::sortPermissions(defaults($postarray, 'deny_cid', '')),
'deny_gid' => self::sortPermissions(defaults($postarray, 'deny_gid', ''))];
$set = DBA::selectFirst('permissionset', ['id'], $condition);
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if (!DBA::isResult($set)) {
DBA::insert('permissionset', $condition, true);
$set = DBA::selectFirst('permissionset', ['id'], $condition);
}
return $set['id'];
}
private static function sortPermissions($permissionlist)
{
$cleaned_list = trim($permissionlist, '<>');
if (empty($cleaned_list)) {
return $permissionlist;
}
$elements = explode('><', $cleaned_list);
if (count($elements) <= 1) {
return $permissionlist;
}
asort($elements);
return '<' . implode('><', $elements) . '>';
}
}