322 lines
8.7 KiB
PHP
322 lines
8.7 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Model;
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use Friendica\Core\System;
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use Friendica\Database\DBA;
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use Friendica\Database\DBStructure;
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use Friendica\DI;
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use Friendica\Object\Image;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Mimetype;
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use Friendica\Security\Security;
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/**
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* Class to handle attach dabatase table
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*/
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class Attach
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{
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/**
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* Return a list of fields that are associated with the attach table
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*
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* @return array field list
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* @throws \Exception
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*/
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private static function getFields()
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{
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$allfields = DBStructure::definition(DI::app()->getBasePath(), false);
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$fields = array_keys($allfields['attach']['fields']);
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array_splice($fields, array_search('data', $fields), 1);
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return $fields;
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}
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/**
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* Select rows from the attach table and return them as array
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*
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* @param array $fields Array of selected fields, empty for all
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* @param array $conditions Array of fields for conditions
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* @param array $params Array of several parameters
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*
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* @return array
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*
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* @throws \Exception
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* @see \Friendica\Database\DBA::selectToArray
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*/
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public static function selectToArray(array $fields = [], array $conditions = [], array $params = [])
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{
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if (empty($fields)) {
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$fields = self::getFields();
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}
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return DBA::selectToArray('attach', $fields, $conditions, $params);
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}
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/**
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* Retrieve a single record from the attach table
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*
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* @param array $fields Array of selected fields, empty for all
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* @param array $conditions Array of fields for conditions
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* @param array $params Array of several parameters
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*
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* @return bool|array
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*
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* @throws \Exception
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* @see \Friendica\Database\DBA::select
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*/
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public static function selectFirst(array $fields = [], array $conditions = [], array $params = [])
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{
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if (empty($fields)) {
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$fields = self::getFields();
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}
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return DBA::selectFirst('attach', $fields, $conditions, $params);
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}
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/**
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* Check if attachment with given conditions exists
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*
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* @param array $conditions Array of extra conditions
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*
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* @return boolean
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* @throws \Exception
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*/
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public static function exists(array $conditions)
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{
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return DBA::exists('attach', $conditions);
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}
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/**
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* Retrive a single record given the ID
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*
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* @param int $id Row id of the record
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*
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* @return bool|array
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*
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* @throws \Exception
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* @see \Friendica\Database\DBA::select
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*/
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public static function getById($id)
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{
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return self::selectFirst([], ['id' => $id]);
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}
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/**
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* Retrive a single record given the ID
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*
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* @param int $id Row id of the record
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*
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* @return bool|array
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*
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* @throws \Exception
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* @see \Friendica\Database\DBA::select
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*/
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public static function getByIdWithPermission($id)
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{
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$r = self::selectFirst(['uid'], ['id' => $id]);
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if ($r === false) {
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return false;
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}
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$sql_acl = Security::getPermissionsSQLByUserId($r['uid']);
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$conditions = [
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'`id` = ?' . $sql_acl,
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$id
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];
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$item = self::selectFirst([], $conditions);
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return $item;
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}
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/**
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* Get file data for given row id. null if row id does not exist
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*
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* @param array $item Attachment data. Needs at least 'id', 'backend-class', 'backend-ref'
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*
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* @return string file data
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* @throws \Exception
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*/
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public static function getData($item)
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{
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if (!empty($item['data'])) {
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return $item['data'];
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}
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$backendClass = DI::storageManager()->getByName($item['backend-class'] ?? '');
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if (empty($backendClass)) {
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// legacy data storage in 'data' column
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$i = self::selectFirst(['data'], ['id' => $item['id']]);
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if ($i === false) {
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return null;
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}
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return $i['data'];
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} else {
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$backendRef = $item['backend-ref'];
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return $backendClass->get($backendRef);
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}
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}
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/**
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* Store new file metadata in db and binary in default backend
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*
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* @param string $data Binary data
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* @param integer $uid User ID
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* @param string $filename Filename
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* @param string $filetype Mimetype. optional, default = ''
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* @param integer $filesize File size in bytes. optional, default = null
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* @param string $allow_cid Permissions, allowed contacts. optional, default = ''
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* @param string $allow_gid Permissions, allowed groups. optional, default = ''
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* @param string $deny_cid Permissions, denied contacts.optional, default = ''
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* @param string $deny_gid Permissions, denied greoup.optional, default = ''
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*
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* @return boolean/integer Row id on success, False on errors
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function store($data, $uid, $filename, $filetype = '' , $filesize = null, $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '')
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{
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if ($filetype === '') {
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$filetype = Mimetype::getContentType($filename);
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}
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if (is_null($filesize)) {
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$filesize = strlen($data);
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}
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$backend_ref = DI::storage()->put($data);
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$data = '';
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$hash = System::createGUID(64);
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$created = DateTimeFormat::utcNow();
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$fields = [
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'uid' => $uid,
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'hash' => $hash,
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'filename' => $filename,
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'filetype' => $filetype,
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'filesize' => $filesize,
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'data' => $data,
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'created' => $created,
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'edited' => $created,
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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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'backend-class' => (string)DI::storage(),
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'backend-ref' => $backend_ref
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];
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$r = DBA::insert('attach', $fields);
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if ($r === true) {
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return DBA::lastInsertId();
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}
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return $r;
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}
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/**
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* Store new file metadata in db and binary in default backend from existing file
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*
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* @param $src
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* @param $uid
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* @param string $filename
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* @param string $allow_cid
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* @param string $allow_gid
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* @param string $deny_cid
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* @param string $deny_gid
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* @return boolean True on success
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function storeFile($src, $uid, $filename = '', $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '')
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{
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if ($filename === '') {
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$filename = basename($src);
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}
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$data = @file_get_contents($src);
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return self::store($data, $uid, $filename, '', null, $allow_cid, $allow_gid, $deny_cid, $deny_gid);
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}
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/**
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* Update an attached file
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*
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* @param array $fields Contains the fields that are updated
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* @param array $conditions Condition array with the key values
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* @param Image $img Image data to update. Optional, default null.
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* @param array|boolean $old_fields Array with the old field values that are about to be replaced (true = update on duplicate)
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*
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* @return boolean Was the update successful?
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*
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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* @see \Friendica\Database\DBA::update
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*/
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public static function update($fields, $conditions, Image $img = null, array $old_fields = [])
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{
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if (!is_null($img)) {
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// get items to update
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$items = self::selectToArray(['backend-class','backend-ref'], $conditions);
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foreach($items as $item) {
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$backend_class = DI::storageManager()->getByName($item['backend-class'] ?? '');
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if (!empty($backend_class)) {
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$fields['backend-ref'] = $backend_class->put($img->asString(), $item['backend-ref'] ?? '');
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} else {
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$fields['data'] = $img->asString();
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}
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}
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}
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$fields['edited'] = DateTimeFormat::utcNow();
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return DBA::update('attach', $fields, $conditions, $old_fields);
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}
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/**
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* Delete info from table and data from storage
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*
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* @param array $conditions Field condition(s)
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* @param array $options Options array, Optional
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*
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* @return boolean
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*
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* @throws \Exception
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* @see \Friendica\Database\DBA::delete
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*/
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public static function delete(array $conditions, array $options = [])
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{
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// get items to delete data info
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$items = self::selectToArray(['backend-class','backend-ref'], $conditions);
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foreach($items as $item) {
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$backend_class = DI::storageManager()->getByName($item['backend-class'] ?? '');
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if (!empty($backend_class)) {
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$backend_class->delete($item['backend-ref'] ?? '');
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}
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}
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return DBA::delete('attach', $conditions, $options);
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}
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}
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