848 lines
34 KiB
PHP
848 lines
34 KiB
PHP
<?php
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/**
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* GNU social - a federating social network
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*
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* Abstraction for files
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*
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* LICENCE: 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 published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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 <http://www.gnu.org/licenses/>.
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*
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* @category Files
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* @package GNUsocial
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @author Miguel Dantas <biodantas@gmail.com>
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* @copyright 2008-2009, 2019 Free Software Foundation http://fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link https://www.gnu.org/software/social/
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*/
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defined('GNUSOCIAL') || die();
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/**
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* Table Definition for file
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*/
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class File extends Managed_DataObject
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{
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public $__table = 'file'; // table name
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public $id; // int(4) primary_key not_null
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public $urlhash; // varchar(64) unique_key
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public $url; // text
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public $filehash; // varchar(64) indexed
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public $mimetype; // varchar(50)
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public $size; // int(4)
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public $title; // text()
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public $date; // int(4)
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public $protected; // int(4)
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public $filename; // text()
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public $width; // int(4)
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public $height; // int(4)
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public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
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const URLHASH_ALG = 'sha256';
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const FILEHASH_ALG = 'sha256';
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public static function schemaDef()
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{
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return array(
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'fields' => array(
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'id' => array('type' => 'serial', 'not null' => true),
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'urlhash' => array('type' => 'varchar', 'length' => 64, 'not null' => true, 'description' => 'sha256 of destination URL (url field)'),
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'url' => array('type' => 'text', 'description' => 'destination URL after following possible redirections'),
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'filehash' => array('type' => 'varchar', 'length' => 64, 'not null' => false, 'description' => 'sha256 of the file contents, only for locally stored files of course'),
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'mimetype' => array('type' => 'varchar', 'length' => 50, 'description' => 'mime type of resource'),
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'size' => array('type' => 'int', 'description' => 'size of resource when available'),
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'title' => array('type' => 'text', 'description' => 'title of resource when available'),
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'date' => array('type' => 'int', 'description' => 'date of resource according to http query'),
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'protected' => array('type' => 'int', 'description' => 'true when URL is private (needs login)'),
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'filename' => array('type' => 'text', 'description' => 'if file is stored locally (too) this is the filename'),
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'width' => array('type' => 'int', 'description' => 'width in pixels, if it can be described as such and data is available'),
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'height' => array('type' => 'int', 'description' => 'height in pixels, if it can be described as such and data is available'),
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'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
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),
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'primary key' => array('id'),
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'unique keys' => array(
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'file_urlhash_key' => array('urlhash'),
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),
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'indexes' => array(
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'file_filehash_idx' => array('filehash'),
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),
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);
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}
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public static function isProtected($url)
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{
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$protected_urls_exps = array(
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'https://www.facebook.com/login.php',
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common_path('main/login')
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);
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foreach ($protected_urls_exps as $protected_url_exp) {
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if (preg_match('!^'.preg_quote($protected_url_exp).'(.*)$!i', $url) === 1) {
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return true;
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}
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}
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return false;
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}
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/**
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* Save a new file record.
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*
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* @param array $redir_data lookup data eg from File_redirection::where()
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* @param string $given_url
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* @return File
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* @throws ServerException
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*/
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public static function saveNew(array $redir_data, $given_url)
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{
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$file = null;
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try {
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// I don't know why we have to keep doing this but we run a last check to avoid
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// uniqueness bugs.
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$file = File::getByUrl($given_url);
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return $file;
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} catch (NoResultException $e) {
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// We don't have the file's URL since before, so let's continue.
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}
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// if the given url is an local attachment url and the id already exists, don't
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// save a new file record. This should never happen, but let's make it foolproof
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// FIXME: how about attachments servers?
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$u = parse_url($given_url);
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if (isset($u['host']) && $u['host'] === common_config('site', 'server')) {
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$r = Router::get();
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// Skip the / in the beginning or $r->map won't match
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try {
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$args = $r->map(mb_substr($u['path'], 1));
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if ($args['action'] === 'attachment') {
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try {
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// $args['attachment'] should always be set if action===attachment, given our routing rules
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$file = File::getByID($args['attachment']);
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return $file;
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} catch (EmptyPkeyValueException $e) {
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// ...but $args['attachment'] can also be 0...
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} catch (NoResultException $e) {
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// apparently this link goes to us, but is _not_ an existing attachment (File) ID?
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}
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}
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} catch (Exception $e) {
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// Some other exception was thrown from $r->map, likely a
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// ClientException (404) because of some malformed link to
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// our own instance. It's still a valid URL however, so we
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// won't abort anything... I noticed this when linking:
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// https://social.umeahackerspace.se/mmn/foaf' (notice the
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// apostrophe in the end, making it unrecognizable for our
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// URL routing.
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// That specific issue (the apostrophe being part of a link
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// is something that may or may not have been fixed since,
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// in lib/util.php in common_replace_urls_callback().
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}
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}
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$file = new File;
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$file->url = $given_url;
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if (!empty($redir_data['protected'])) {
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$file->protected = $redir_data['protected'];
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}
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if (!empty($redir_data['title'])) {
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$file->title = $redir_data['title'];
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}
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if (!empty($redir_data['type'])) {
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$file->mimetype = $redir_data['type'];
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}
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if (!empty($redir_data['size'])) {
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$file->size = intval($redir_data['size']);
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}
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if (isset($redir_data['time']) && $redir_data['time'] > 0) {
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$file->date = intval($redir_data['time']);
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}
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$file->saveFile();
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return $file;
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}
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public function saveFile()
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{
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$this->urlhash = self::hashurl($this->url);
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if (!Event::handle('StartFileSaveNew', array(&$this))) {
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throw new ServerException('File not saved due to an aborted StartFileSaveNew event.');
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}
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$this->id = $this->insert();
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if ($this->id === false) {
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throw new ServerException('File/URL metadata could not be saved to the database.');
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}
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Event::handle('EndFileSaveNew', array($this));
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}
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/**
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* Go look at a URL and possibly save data about it if it's new:
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* - follow redirect chains and store them in file_redirection
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* - if a thumbnail is available, save it in file_thumbnail
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* - save file record with basic info
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* - optionally save a file_to_post record
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* - return the File object with the full reference
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*
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* @param string $given_url the URL we're looking at
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* @param Notice $notice (optional)
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* @param bool $followRedirects defaults to true
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*
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* @return mixed File on success, -1 on some errors
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*
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* @throws ServerException on failure
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*/
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public static function processNew($given_url, Notice $notice=null, $followRedirects=true)
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{
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if (empty($given_url)) {
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throw new ServerException('No given URL to process');
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}
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$given_url = File_redirection::_canonUrl($given_url);
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if (empty($given_url)) {
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throw new ServerException('No canonical URL from given URL to process');
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}
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$redir = File_redirection::where($given_url);
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try {
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$file = $redir->getFile();
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} catch (EmptyPkeyValueException $e) {
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common_log(LOG_ERR, 'File_redirection::where gave object with empty file_id for given_url '._ve($given_url));
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throw new ServerException('URL processing failed without new File object');
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} catch (NoResultException $e) {
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// This should not happen
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common_log(LOG_ERR, 'File_redirection after discovery could still not return a File object.');
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throw new ServerException('URL processing failed without new File object');
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}
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if ($notice instanceof Notice) {
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File_to_post::processNew($file, $notice);
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}
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return $file;
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}
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public static function respectsQuota(Profile $scoped, $fileSize)
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{
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if ($fileSize > common_config('attachments', 'file_quota')) {
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// TRANS: Message used to be inserted as %2$s in the text "No file may
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// TRANS: be larger than %1$d byte and the file you sent was %2$s.".
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// TRANS: %1$d is the number of bytes of an uploaded file.
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$fileSizeText = sprintf(_m('%1$d byte', '%1$d bytes', $fileSize), $fileSize);
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$fileQuota = common_config('attachments', 'file_quota');
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// TRANS: Message given if an upload is larger than the configured maximum.
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// TRANS: %1$d (used for plural) is the byte limit for uploads,
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// TRANS: %2$s is the proper form of "n bytes". This is the only ways to have
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// TRANS: gettext support multiple plurals in the same message, unfortunately...
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throw new ClientException(
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sprintf(
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_m(
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'No file may be larger than %1$d byte and the file you sent was %2$s. Try to upload a smaller version.',
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'No file may be larger than %1$d bytes and the file you sent was %2$s. Try to upload a smaller version.',
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$fileQuota
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),
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$fileQuota,
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$fileSizeText
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)
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);
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}
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$file = new File;
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$query = "select sum(size) as total from file join file_to_post on file_to_post.file_id = file.id join notice on file_to_post.post_id = notice.id where profile_id = {$scoped->id} and file.url like '%/notice/%/file'";
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$file->query($query);
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$file->fetch();
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$total = $file->total + $fileSize;
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if ($total > common_config('attachments', 'user_quota')) {
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// TRANS: Message given if an upload would exceed user quota.
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// TRANS: %d (number) is the user quota in bytes and is used for plural.
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throw new ClientException(
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sprintf(
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_m(
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'A file this large would exceed your user quota of %d byte.',
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'A file this large would exceed your user quota of %d bytes.',
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common_config('attachments', 'user_quota')
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),
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common_config('attachments', 'user_quota')
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)
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);
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}
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$query .= ' AND EXTRACT(month FROM file.modified) = EXTRACT(month FROM now()) and EXTRACT(year FROM file.modified) = EXTRACT(year FROM now())';
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$file->query($query);
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$file->fetch();
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$total = $file->total + $fileSize;
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if ($total > common_config('attachments', 'monthly_quota')) {
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// TRANS: Message given id an upload would exceed a user's monthly quota.
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// TRANS: $d (number) is the monthly user quota in bytes and is used for plural.
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throw new ClientException(
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sprintf(
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_m(
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'A file this large would exceed your monthly quota of %d byte.',
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'A file this large would exceed your monthly quota of %d bytes.',
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common_config('attachments', 'monthly_quota')
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),
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common_config('attachments', 'monthly_quota')
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)
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);
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}
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return true;
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}
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public function getFilename()
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{
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return self::tryFilename($this->filename);
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}
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public function getSize()
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{
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return intval($this->size);
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}
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// where should the file go?
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public static function filename(Profile $profile, $origname, $mimetype)
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{
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$ext = self::guessMimeExtension($mimetype, $origname);
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// Normalize and make the original filename more URL friendly.
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$origname = basename($origname, ".$ext");
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if (class_exists('Normalizer')) {
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// http://php.net/manual/en/class.normalizer.php
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// http://www.unicode.org/reports/tr15/
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$origname = Normalizer::normalize($origname, Normalizer::FORM_KC);
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}
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$origname = preg_replace('/[^A-Za-z0-9\.\_]/', '_', $origname);
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$nickname = $profile->getNickname();
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$datestamp = strftime('%Y%m%d', time());
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do {
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// generate new random strings until we don't run into a filename collision.
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$random = strtolower(common_confirmation_code(16));
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$filename = "$nickname-$datestamp-$origname-$random.$ext";
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} while (file_exists(self::path($filename)));
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return $filename;
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}
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/**
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* @param $mimetype string The mimetype we've discovered for this file.
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* @param $filename string An optional filename which we can use on failure.
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* @return mixed|string
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* @throws ClientException
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*/
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public static function guessMimeExtension($mimetype, $filename=null)
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{
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try {
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// first see if we know the extension for our mimetype
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$ext = common_supported_mime_to_ext($mimetype);
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// we do, so use it!
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return $ext;
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} catch (UnknownMimeExtensionException $e) {
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// We don't know the extension for this mimetype, but let's guess.
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// If we can't recognize the extension from the MIME, we try
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// to guess based on filename, if one was supplied.
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if (!is_null($filename) && preg_match('/^.+\.([A-Za-z0-9]+)$/', $filename, $matches)) {
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// we matched on a file extension, so let's see if it means something.
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$ext = mb_strtolower($matches[1]);
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$blacklist = common_config('attachments', 'extblacklist');
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// If we got an extension from $filename we want to check if it's in a blacklist
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// so we avoid people uploading .php files etc.
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if (array_key_exists($ext, $blacklist)) {
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if (!is_string($blacklist[$ext])) {
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// we don't have a safe replacement extension
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throw new ClientException(_('Blacklisted file extension.'));
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}
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common_debug('Found replaced extension for filename '._ve($filename).': '._ve($ext));
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// return a safe replacement extension ('php' => 'phps' for example)
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return $blacklist[$ext];
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}
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// the attachment extension based on its filename was not blacklisted so it's ok to use it
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return $ext;
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}
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} catch (Exception $e) {
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common_log(LOG_INFO, 'Problem when figuring out extension for mimetype: '._ve($e));
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}
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// If nothing else has given us a result, try to extract it from
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// the mimetype value (this turns .jpg to .jpeg for example...)
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$matches = array();
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// FIXME: try to build a regexp that will get jpeg from image/jpeg as well as json from application/jrd+json
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if (!preg_match('/\/([a-z0-9]+)/', mb_strtolower($mimetype), $matches)) {
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throw new Exception('Malformed mimetype: '.$mimetype);
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}
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return mb_strtolower($matches[1]);
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}
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/**
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* Validation for as-saved base filenames
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* @param $filename
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* @return false|int
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*/
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public static function validFilename($filename)
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{
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return preg_match('/^[A-Za-z0-9._-]+$/', $filename);
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}
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public static function tryFilename($filename)
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{
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if (!self::validFilename($filename)) {
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throw new InvalidFilenameException($filename);
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}
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// if successful, return the filename for easy if-statementing
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return $filename;
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}
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|
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/**
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* @param $filename
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* @return string
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* @throws InvalidFilenameException
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*/
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public static function path($filename)
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{
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self::tryFilename($filename);
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$dir = common_config('attachments', 'dir');
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if (!in_array($dir[mb_strlen($dir)-1], ['/', '\\'])) {
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$dir .= DIRECTORY_SEPARATOR;
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}
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return $dir . $filename;
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}
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|
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public static function url($filename)
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{
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self::tryFilename($filename);
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if (common_config('site', 'private')) {
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return common_local_url(
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'getfile',
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array('filename' => $filename)
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);
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}
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if (GNUsocial::useHTTPS()) {
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$sslserver = common_config('attachments', 'sslserver');
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|
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if (empty($sslserver)) {
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// XXX: this assumes that background dir == site dir + /file/
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// not true if there's another server
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if (is_string(common_config('site', 'sslserver')) &&
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mb_strlen(common_config('site', 'sslserver')) > 0) {
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$server = common_config('site', 'sslserver');
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} elseif (common_config('site', 'server')) {
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$server = common_config('site', 'server');
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}
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$path = common_config('site', 'path') . '/file/';
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} else {
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$server = $sslserver;
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$path = common_config('attachments', 'sslpath');
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if (empty($path)) {
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$path = common_config('attachments', 'path');
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}
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}
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$protocol = 'https';
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} else {
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$path = common_config('attachments', 'path');
|
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$server = common_config('attachments', 'server');
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|
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if (empty($server)) {
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$server = common_config('site', 'server');
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}
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$ssl = common_config('attachments', 'ssl');
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$protocol = ($ssl) ? 'https' : 'http';
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}
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|
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if ($path[strlen($path)-1] != '/') {
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$path .= '/';
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}
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|
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if ($path[0] != '/') {
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$path = '/'.$path;
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}
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|
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return $protocol.'://'.$server.$path.$filename;
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}
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|
|
|
public static $_enclosures = array();
|
|
|
|
public function getEnclosure()
|
|
{
|
|
if (isset(self::$_enclosures[$this->getID()])) {
|
|
return self::$_enclosures[$this->getID()];
|
|
}
|
|
|
|
$enclosure = (object) array();
|
|
foreach (array('title', 'url', 'date', 'modified', 'size', 'mimetype', 'width', 'height') as $key) {
|
|
if ($this->$key !== '') {
|
|
$enclosure->$key = $this->$key;
|
|
}
|
|
}
|
|
|
|
$needMoreMetadataMimetypes = array(null, 'application/xhtml+xml', 'text/html');
|
|
|
|
if (!isset($this->filename) && in_array(common_bare_mime($enclosure->mimetype), $needMoreMetadataMimetypes)) {
|
|
// This fetches enclosure metadata for non-local links with unset/HTML mimetypes,
|
|
// which may be enriched through oEmbed or similar (implemented as plugins)
|
|
Event::handle('FileEnclosureMetadata', array($this, &$enclosure));
|
|
}
|
|
if (empty($enclosure->mimetype)) {
|
|
// This means we either don't know what it is, so it can't
|
|
// be shown as an enclosure, or it is an HTML link which
|
|
// does not link to a resource with further metadata.
|
|
throw new ServerException('Unknown enclosure mimetype, not enough metadata');
|
|
}
|
|
|
|
self::$_enclosures[$this->getID()] = $enclosure;
|
|
return $enclosure;
|
|
}
|
|
|
|
public function hasThumbnail()
|
|
{
|
|
try {
|
|
$this->getThumbnail();
|
|
} catch (Exception $e) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the attachment's thumbnail record, if any.
|
|
* Make sure you supply proper 'int' typed variables (or null).
|
|
*
|
|
* @param $width int Max width of thumbnail in pixels. (if null, use common_config values)
|
|
* @param $height int Max height of thumbnail in pixels. (if null, square-crop to $width)
|
|
* @param $crop bool Crop to the max-values' aspect ratio
|
|
* @param $force_still bool Don't allow fallback to showing original (such as animated GIF)
|
|
* @param $upscale mixed Whether or not to scale smaller images up to larger thumbnail sizes. (null = site default)
|
|
*
|
|
* @return File_thumbnail
|
|
*
|
|
* @throws UseFileAsThumbnailException if the file is considered an image itself and should be itself as thumbnail
|
|
* @throws UnsupportedMediaException if, despite trying, we can't understand how to make a thumbnail for this format
|
|
* @throws ServerException on various other errors
|
|
*/
|
|
public function getThumbnail($width=null, $height=null, $crop=false, $force_still=true, $upscale=null)
|
|
{
|
|
// Get some more information about this file through our ImageFile class
|
|
$image = ImageFile::fromFileObject($this);
|
|
if ($image->animated && !common_config('thumbnail', 'animated')) {
|
|
// null means "always use file as thumbnail"
|
|
// false means you get choice between frozen frame or original when calling getThumbnail
|
|
if (is_null(common_config('thumbnail', 'animated')) || !$force_still) {
|
|
try {
|
|
// remote files with animated GIFs as thumbnails will match this
|
|
return File_thumbnail::byFile($this);
|
|
} catch (NoResultException $e) {
|
|
// and if it's not a remote file, it'll be safe to use the locally stored File
|
|
throw new UseFileAsThumbnailException($this);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $image->getFileThumbnail(
|
|
$width,
|
|
$height,
|
|
$crop,
|
|
!is_null($upscale) ? $upscale : common_config('thumbnail', 'upscale')
|
|
);
|
|
}
|
|
|
|
public function getPath()
|
|
{
|
|
$filepath = self::path($this->filename);
|
|
if (!file_exists($filepath)) {
|
|
throw new FileNotFoundException($filepath);
|
|
}
|
|
return $filepath;
|
|
}
|
|
|
|
public function getAttachmentUrl()
|
|
{
|
|
return common_local_url('attachment', array('attachment'=>$this->getID()));
|
|
}
|
|
|
|
/**
|
|
* @param mixed $use_local true means require local, null means prefer local, false means use whatever is stored
|
|
* @return string
|
|
* @throws FileNotStoredLocallyException
|
|
*/
|
|
public function getUrl($use_local=null)
|
|
{
|
|
if ($use_local !== false) {
|
|
if (is_string($this->filename) || !empty($this->filename)) {
|
|
// A locally stored file, so let's generate a URL for our instance.
|
|
return self::url($this->getFilename());
|
|
}
|
|
if ($use_local) {
|
|
// if the file wasn't stored locally (has filename) and we require a local URL
|
|
throw new FileNotStoredLocallyException($this);
|
|
}
|
|
}
|
|
|
|
|
|
// No local filename available, return the URL we have stored
|
|
return $this->url;
|
|
}
|
|
|
|
public static function getByUrl($url)
|
|
{
|
|
$file = new File();
|
|
$file->urlhash = self::hashurl($url);
|
|
if (!$file->find(true)) {
|
|
throw new NoResultException($file);
|
|
}
|
|
return $file;
|
|
}
|
|
|
|
/**
|
|
* @param string $hashstr String of (preferrably lower case) hexadecimal characters, same as result of 'hash_file(...)'
|
|
* @return File
|
|
* @throws NoResultException
|
|
*/
|
|
public static function getByHash($hashstr)
|
|
{
|
|
$file = new File();
|
|
$file->filehash = strtolower($hashstr);
|
|
if (!$file->find(true)) {
|
|
throw new NoResultException($file);
|
|
}
|
|
return $file;
|
|
}
|
|
|
|
public function updateUrl($url)
|
|
{
|
|
$file = File::getKV('urlhash', self::hashurl($url));
|
|
if ($file instanceof File) {
|
|
throw new ServerException('URL already exists in DB');
|
|
}
|
|
$sql = 'UPDATE %1$s SET urlhash=%2$s, url=%3$s WHERE urlhash=%4$s;';
|
|
$result = $this->query(sprintf(
|
|
$sql,
|
|
$this->tableName(),
|
|
$this->_quote((string)self::hashurl($url)),
|
|
$this->_quote((string)$url),
|
|
$this->_quote((string)$this->urlhash)
|
|
));
|
|
if ($result === false) {
|
|
common_log_db_error($this, 'UPDATE', __FILE__);
|
|
throw new ServerException("Could not UPDATE {$this->tableName()}.url");
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Blow the cache of notices that link to this URL
|
|
*
|
|
* @param boolean $last Whether to blow the "last" cache too
|
|
*
|
|
* @return void
|
|
*/
|
|
|
|
public function blowCache($last=false)
|
|
{
|
|
self::blow('file:notice-ids:%s', $this->id);
|
|
if ($last) {
|
|
self::blow('file:notice-ids:%s;last', $this->id);
|
|
}
|
|
self::blow('file:notice-count:%d', $this->id);
|
|
}
|
|
|
|
/**
|
|
* Stream of notices linking to this URL
|
|
*
|
|
* @param integer $offset Offset to show; default is 0
|
|
* @param integer $limit Limit of notices to show
|
|
* @param integer $since_id Since this notice
|
|
* @param integer $max_id Before this notice
|
|
*
|
|
* @return array ids of notices that link to this file
|
|
*/
|
|
|
|
public function stream($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $max_id=0)
|
|
{
|
|
// FIXME: Try to get the Profile::current() here in some other way to avoid mixing
|
|
// the current session user with possibly background/queue processing.
|
|
$stream = new FileNoticeStream($this, Profile::current());
|
|
return $stream->getNotices($offset, $limit, $since_id, $max_id);
|
|
}
|
|
|
|
public function noticeCount()
|
|
{
|
|
$cacheKey = sprintf('file:notice-count:%d', $this->id);
|
|
|
|
$count = self::cacheGet($cacheKey);
|
|
|
|
if ($count === false) {
|
|
$f2p = new File_to_post();
|
|
|
|
$f2p->file_id = $this->id;
|
|
|
|
$count = $f2p->count();
|
|
|
|
self::cacheSet($cacheKey, $count);
|
|
}
|
|
|
|
return $count;
|
|
}
|
|
|
|
public function isLocal()
|
|
{
|
|
return !empty($this->filename);
|
|
}
|
|
|
|
public function delete($useWhere=false)
|
|
{
|
|
// Delete the file, if it exists locally
|
|
if (!empty($this->filename) && file_exists(self::path($this->filename))) {
|
|
$deleted = @unlink(self::path($this->filename));
|
|
if (!$deleted) {
|
|
common_log(LOG_ERR, sprintf('Could not unlink existing file: "%s"', self::path($this->filename)));
|
|
}
|
|
}
|
|
|
|
// Clear out related things in the database and filesystem, such as thumbnails
|
|
if (Event::handle('FileDeleteRelated', array($this))) {
|
|
$thumbs = new File_thumbnail();
|
|
$thumbs->file_id = $this->id;
|
|
if ($thumbs->find()) {
|
|
while ($thumbs->fetch()) {
|
|
$thumbs->delete();
|
|
}
|
|
}
|
|
|
|
$f2p = new File_to_post();
|
|
$f2p->file_id = $this->id;
|
|
if ($f2p->find()) {
|
|
while ($f2p->fetch()) {
|
|
$f2p->delete();
|
|
}
|
|
}
|
|
}
|
|
|
|
// And finally remove the entry from the database
|
|
return parent::delete($useWhere);
|
|
}
|
|
|
|
public function getTitle()
|
|
{
|
|
$title = $this->title ?: $this->filename;
|
|
|
|
return $title ?: null;
|
|
}
|
|
|
|
public function setTitle($title)
|
|
{
|
|
$orig = clone($this);
|
|
$this->title = mb_strlen($title) > 0 ? $title : null;
|
|
return $this->update($orig);
|
|
}
|
|
|
|
public static function hashurl($url)
|
|
{
|
|
if (empty($url)) {
|
|
throw new Exception('No URL provided to hash algorithm.');
|
|
}
|
|
return hash(self::URLHASH_ALG, $url);
|
|
}
|
|
|
|
public static function beforeSchemaUpdate()
|
|
{
|
|
$table = strtolower(get_called_class());
|
|
$schema = Schema::get();
|
|
$schemadef = $schema->getTableDef($table);
|
|
|
|
// 2015-02-19 We have to upgrade our table definitions to have the urlhash field populated
|
|
if (isset($schemadef['fields']['urlhash']) && isset($schemadef['unique keys']['file_urlhash_key'])) {
|
|
// We already have the urlhash field, so no need to migrate it.
|
|
return;
|
|
}
|
|
echo "\nFound old $table table, upgrading it to contain 'urlhash' field...";
|
|
|
|
$file = new File();
|
|
$file->query(sprintf('SELECT id, LEFT(url, 191) AS shortenedurl, COUNT(*) AS c FROM %1$s WHERE LENGTH(url)>191 GROUP BY shortenedurl HAVING c > 1', $schema->quoteIdentifier($table)));
|
|
print "\nFound {$file->N} URLs with too long entries in file table\n";
|
|
while ($file->fetch()) {
|
|
// We've got a URL that is too long for our future file table
|
|
// so we'll cut it. We could save the original URL, but there is
|
|
// no guarantee it is complete anyway since the previous max was 255 chars.
|
|
$dupfile = new File();
|
|
// First we find file entries that would be duplicates of this when shortened
|
|
// ... and we'll just throw the dupes out the window for now! It's already so borken.
|
|
$dupfile->query(sprintf('SELECT * FROM file WHERE LEFT(url, 191) = %1$s', $dupfile->_quote($file->shortenedurl)));
|
|
// Leave one of the URLs in the database by using ->find(true) (fetches first entry)
|
|
if ($dupfile->find(true)) {
|
|
print "\nShortening url entry for $table id: {$file->id} [";
|
|
$orig = clone($dupfile);
|
|
$origurl = $dupfile->url; // save for logging purposes
|
|
$dupfile->url = $file->shortenedurl; // make sure it's only 191 chars from now on
|
|
$dupfile->update($orig);
|
|
print "\nDeleting duplicate entries of too long URL on $table id: {$file->id} [";
|
|
// only start deleting with this fetch.
|
|
while ($dupfile->fetch()) {
|
|
common_log(LOG_INFO, sprintf('Deleting duplicate File entry of %1$d: %2$d (original URL: %3$s collides with these first 191 characters: %4$s', $dupfile->id, $file->id, $origurl, $file->shortenedurl));
|
|
print ".";
|
|
$dupfile->delete();
|
|
}
|
|
print "]\n";
|
|
} else {
|
|
print "\nWarning! URL suddenly disappeared from database: {$file->url}\n";
|
|
}
|
|
}
|
|
echo "...and now all the non-duplicates which are longer than 191 characters...\n";
|
|
$file->query('UPDATE file SET url=LEFT(url, 191) WHERE LENGTH(url)>191');
|
|
|
|
echo "\n...now running hacky pre-schemaupdate change for $table:";
|
|
// We have to create a urlhash that is _not_ the primary key,
|
|
// transfer data and THEN run checkSchema
|
|
$schemadef['fields']['urlhash'] = array(
|
|
'type' => 'varchar',
|
|
'length' => 64,
|
|
'not null' => false, // this is because when adding column, all entries will _be_ NULL!
|
|
'description' => 'sha256 of destination URL (url field)',
|
|
);
|
|
$schemadef['fields']['url'] = array(
|
|
'type' => 'text',
|
|
'description' => 'destination URL after following possible redirections',
|
|
);
|
|
unset($schemadef['unique keys']);
|
|
$schema->ensureTable($table, $schemadef);
|
|
echo "DONE.\n";
|
|
|
|
$classname = ucfirst($table);
|
|
$tablefix = new $classname;
|
|
// urlhash is hash('sha256', $url) in the File table
|
|
echo "Updating urlhash fields in $table table...";
|
|
// Maybe very MySQL specific :(
|
|
$tablefix->query(sprintf(
|
|
'UPDATE %1$s SET %2$s=%3$s;',
|
|
$schema->quoteIdentifier($table),
|
|
'urlhash',
|
|
// The line below is "result of sha256 on column `url`"
|
|
'SHA2(url, 256)'
|
|
));
|
|
echo "DONE.\n";
|
|
echo "Resuming core schema upgrade...";
|
|
}
|
|
}
|