f1c4c64cd9
This would overwrite remote URLs with local verisons which removes source href... The reason one might have filenames for remote URLs is that StoreRemoteMedia plugin fetches them and uses the filename field.
654 lines
26 KiB
PHP
654 lines
26 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, StatusNet, Inc.
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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 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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if (!defined('GNUSOCIAL')) { exit(1); }
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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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function isProtected($url) {
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return 'http://www.facebook.com/login.php' === $url;
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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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*/
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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 $e) {
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// We don't have the file's URL since before, so let's continue.
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}
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$file = new File;
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$file->url = $given_url;
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if (!empty($redir_data['protected'])) $file->protected = $redir_data['protected'];
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if (!empty($redir_data['title'])) $file->title = $redir_data['title'];
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if (!empty($redir_data['type'])) $file->mimetype = $redir_data['type'];
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if (!empty($redir_data['size'])) $file->size = intval($redir_data['size']);
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if (isset($redir_data['time']) && $redir_data['time'] > 0) $file->date = intval($redir_data['time']);
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$file->saveFile();
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return $file;
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}
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public function saveFile() {
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$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, $followRedirects=true) {
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if (empty($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($given_url);
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$file = $redir->getFile();
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// If we still don't have a File object, let's create one now!
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if (empty($file->id)) {
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if ($redir->url === $given_url || !$followRedirects) {
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// Save the File object based on our lookup trace
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$file->saveFile();
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} else {
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$file->saveFile();
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$redir->file_id = $file->id;
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$redir->insert();
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}
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}
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if (!$file instanceof File || empty($file->id)) {
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// This should not happen
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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, $fileSize) {
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if ($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(_m('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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$fileQuota),
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$fileQuota, $fileSizeText));
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}
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$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(_m('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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common_config('attachments', 'user_quota')));
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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: $d (number) is the monthly user quota in bytes and is used for plural.
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throw new ClientException(
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sprintf(_m('A file this large would exceed your monthly quota of %d byte.',
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'A file this large would exceed your monthly quota of %d bytes.',
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common_config('attachments', 'monthly_quota')),
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common_config('attachments', 'monthly_quota')));
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}
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return true;
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}
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public function getFilename()
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{
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if (!self::validFilename($this->filename)) {
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// TRANS: Client exception thrown if a file upload does not have a valid name.
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throw new ClientException(_("Invalid filename."));
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}
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return $this->filename;
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}
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// where should the file go?
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static function filename(Profile $profile, $origname, $mimetype)
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{
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$ext = self::guessMimeExtension($mimetype);
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// Normalize and make the original filename more URL friendly.
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$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 $filename;
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}
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static function guessMimeExtension($mimetype)
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{
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try {
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$ext = common_supported_mime_to_ext($mimetype);
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} catch (Exception $e) {
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// We don't support this mimetype, but let's guess the extension
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$ext = substr(strrchr($mimetype, '/'), 1);
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}
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return strtolower($ext);
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}
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/**
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* Validation for as-saved base filenames
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*/
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static function validFilename($filename)
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{
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return preg_match('/^[A-Za-z0-9._-]+$/', $filename);
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}
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/**
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* @throws ClientException on invalid filename
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*/
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static function path($filename)
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{
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if (!self::validFilename($filename)) {
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// TRANS: Client exception thrown if a file upload does not have a valid name.
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throw new ClientException(_("Invalid filename."));
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}
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$dir = common_config('attachments', 'dir');
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if ($dir[strlen($dir)-1] != '/') {
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$dir .= '/';
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}
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return $dir . $filename;
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}
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static function url($filename)
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{
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if (!self::validFilename($filename)) {
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// TRANS: Client exception thrown if a file upload does not have a valid name.
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throw new ClientException(_("Invalid filename."));
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}
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if (common_config('site','private')) {
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return common_local_url('getfile',
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array('filename' => $filename));
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}
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if (GNUsocial::useHTTPS()) {
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$sslserver = common_config('attachments', 'sslserver');
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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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} else if (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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$server = common_config('attachments', 'server');
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if (empty($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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if ($path[strlen($path)-1] != '/') {
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$path .= '/';
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}
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if ($path[0] != '/') {
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$path = '/'.$path;
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}
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return $protocol.'://'.$server.$path.$filename;
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}
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function getEnclosure(){
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$enclosure = (object) array();
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foreach (array('title', 'url', 'date', 'modified', 'size', 'mimetype') as $key) {
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$enclosure->$key = $this->$key;
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}
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$needMoreMetadataMimetypes = array(null, 'application/xhtml+xml');
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if (!isset($this->filename) && in_array(common_bare_mime($enclosure->mimetype), $needMoreMetadataMimetypes)) {
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// This fetches enclosure metadata for non-local links with unset/HTML mimetypes,
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// which may be enriched through oEmbed or similar (implemented as plugins)
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Event::handle('FileEnclosureMetadata', array($this, &$enclosure));
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}
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if (empty($enclosure->mimetype) || in_array(common_bare_mime($enclosure->mimetype), $needMoreMetadataMimetypes)) {
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// This means we either don't know what it is, so it can't
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// be shown as an enclosure, or it is an HTML link which
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// does not link to a resource with further metadata.
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throw new ServerException('Unknown enclosure mimetype, not enough metadata');
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}
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return $enclosure;
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}
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/**
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* Get the attachment's thumbnail record, if any.
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* Make sure you supply proper 'int' typed variables (or null).
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*
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* @param $width int Max width of thumbnail in pixels. (if null, use common_config values)
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* @param $height int Max height of thumbnail in pixels. (if null, square-crop to $width)
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* @param $crop bool Crop to the max-values' aspect ratio
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*
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* @return File_thumbnail
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*
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* @throws UseFileAsThumbnailException if the file is considered an image itself and should be itself as thumbnail
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* @throws UnsupportedMediaException if, despite trying, we can't understand how to make a thumbnail for this format
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* @throws ServerException on various other errors
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*/
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public function getThumbnail($width=null, $height=null, $crop=false, $force_still=true)
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{
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// Get some more information about this file through our ImageFile class
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$image = ImageFile::fromFileObject($this);
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if ($image->animated && !common_config('thumbnail', 'animated')) {
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// null means "always use file as thumbnail"
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// false means you get choice between frozen frame or original when calling getThumbnail
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if (is_null(common_config('thumbnail', 'animated')) || !$force_still) {
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throw new UseFileAsThumbnailException($this->id);
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}
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}
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return $image->getFileThumbnail($width, $height, $crop);
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}
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public function getPath()
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{
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$filepath = self::path($this->filename);
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if (!file_exists($filepath)) {
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throw new FileNotFoundException($filepath);
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}
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return $filepath;
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}
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public function getUrl($prefer_local=true)
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{
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if ($prefer_local && !empty($this->filename)) {
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// A locally stored file, so let's generate a URL for our instance.
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return self::url($this->filename);
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}
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// No local filename available, return the URL we have stored
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return $this->url;
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}
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static public function getByUrl($url)
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{
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$file = new File();
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$file->urlhash = self::hashurl($url);
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if (!$file->find(true)) {
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throw new NoResultException($file);
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}
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return $file;
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}
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/**
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* @param string $hashstr String of (preferrably lower case) hexadecimal characters, same as result of 'hash_file(...)'
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*/
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static public function getByHash($hashstr)
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{
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$file = new File();
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$file->filehash = strtolower($hashstr);
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if (!$file->find(true)) {
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throw new NoResultException($file);
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}
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return $file;
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}
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public function updateUrl($url)
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{
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$file = File::getKV('urlhash', self::hashurl($url));
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if ($file instanceof File) {
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throw new ServerException('URL already exists in DB');
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}
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$sql = 'UPDATE %1$s SET urlhash=%2$s, url=%3$s WHERE urlhash=%4$s;';
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$result = $this->query(sprintf($sql, $this->tableName(),
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$this->_quote((string)self::hashurl($url)),
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$this->_quote((string)$url),
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$this->_quote((string)$this->urlhash)));
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if ($result === false) {
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common_log_db_error($this, 'UPDATE', __FILE__);
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throw new ServerException("Could not UPDATE {$this->tableName()}.url");
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}
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return $result;
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}
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/**
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* Blow the cache of notices that link to this URL
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*
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* @param boolean $last Whether to blow the "last" cache too
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*
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* @return void
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*/
|
|
|
|
function blowCache($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 $max_id Before this notice
|
|
*
|
|
* @return array ids of notices that link to this file
|
|
*/
|
|
|
|
function stream($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $max_id=0)
|
|
{
|
|
$stream = new FileNoticeStream($this);
|
|
return $stream->getNotices($offset, $limit, $since_id, $max_id);
|
|
}
|
|
|
|
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 $title ?: null;
|
|
}
|
|
|
|
static public function hashurl($url)
|
|
{
|
|
if (empty($url)) {
|
|
throw new Exception('No URL provided to hash algorithm.');
|
|
}
|
|
return hash(self::URLHASH_ALG, $url);
|
|
}
|
|
|
|
static public 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"', $file->shortenedurl));
|
|
// Leave one of the URLs in the database by using ->find(true) (fetches first entry)
|
|
if ($dupfile->find(true)) {
|
|
print "\nShortening url entry for $table id: {$file->id} [";
|
|
$orig = clone($dupfile);
|
|
$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()) {
|
|
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...";
|
|
}
|
|
}
|