mirror of https://github.com/friendica/friendica
111 lines
2.9 KiB
PHP
111 lines
2.9 KiB
PHP
<?php
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/**
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* @file src/Model/PermissionSet.php
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*/
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namespace Friendica\Model;
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use Friendica\Core\L10n;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Network\HTTPException;
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/**
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* functions for interacting with the permission set of an object (item, photo, event, ...)
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*/
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class PermissionSet
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{
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/**
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* Fetch the id of a given permission set. Generate a new one when needed
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*
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* @param int $uid
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* @param string|null $allow_cid Allowed contact IDs - empty = everyone
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* @param string|null $allow_gid Allowed group IDs - empty = everyone
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* @param string|null $deny_cid Disallowed contact IDs - empty = no one
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* @param string|null $deny_gid Disallowed group IDs - empty = no one
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* @return int id
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* @throws HTTPException\InternalServerErrorException
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*/
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public static function getIdFromACL(
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int $uid,
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string $allow_cid = null,
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string $allow_gid = null,
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string $deny_cid = null,
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string $deny_gid = null
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) {
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$ACLFormatter = DI::aclFormatter();
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$allow_cid = $ACLFormatter->sanitize($allow_cid);
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$allow_gid = $ACLFormatter->sanitize($allow_gid);
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$deny_cid = $ACLFormatter->sanitize($deny_cid);
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$deny_gid = $ACLFormatter->sanitize($deny_gid);
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// Public permission
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if (!$allow_cid && !$allow_gid && !$deny_cid && !$deny_gid) {
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return 0;
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}
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$condition = [
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'uid' => $uid,
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'allow_cid' => $allow_cid,
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'allow_gid' => $allow_gid,
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'deny_cid' => $deny_cid,
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'deny_gid' => $deny_gid
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];
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$permissionset = DBA::selectFirst('permissionset', ['id'], $condition);
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if (DBA::isResult($permissionset)) {
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$psid = $permissionset['id'];
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} else {
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if (DBA::insert('permissionset', $condition, true)) {
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$psid = DBA::lastInsertId();
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} else {
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throw new HTTPException\InternalServerErrorException(L10n::t('Unable to create a new permission set.'));
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}
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}
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return $psid;
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}
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/**
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* Returns a permission set for a given contact
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*
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* @param integer $uid User id whom the items belong
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* @param integer $contact_id Contact id of the visitor
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*
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* @return array of permission set ids.
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* @throws \Exception
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*/
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static public function get($uid, $contact_id)
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{
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if (DBA::exists('contact', ['id' => $contact_id, 'uid' => $uid, 'blocked' => false])) {
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$groups = Group::getIdsByContactId($contact_id);
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}
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if (empty($groups) || !is_array($groups)) {
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return [];
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}
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$group_str = '<<>>'; // should be impossible to match
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foreach ($groups as $g) {
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$group_str .= '|<' . intval($g) . '>';
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}
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$contact_str = '<' . $contact_id . '>';
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$condition = ["`uid` = ? AND (NOT (`deny_cid` REGEXP ? OR deny_gid REGEXP ?)
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AND (allow_cid REGEXP ? OR allow_gid REGEXP ? OR (allow_cid = '' AND allow_gid = '')))",
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$uid, $contact_str, $group_str, $contact_str, $group_str];
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$ret = DBA::select('permissionset', ['id'], $condition);
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$set = [];
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while ($permission = DBA::fetch($ret)) {
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$set[] = $permission['id'];
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}
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DBA::close($ret);
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return $set;
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}
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}
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