forked from GNUsocial/gnu-social
305 lines
11 KiB
PHP
305 lines
11 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_thumbnail
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*/
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class File_thumbnail extends Managed_DataObject
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{
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public $__table = 'file_thumbnail'; // table name
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public $file_id; // int(4) primary_key not_null
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public $urlhash; // varchar(64) indexed
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public $url; // text
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public $filename; // text
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public $width; // int(4) primary_key
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public $height; // int(4) primary_key
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public $modified; // datetime() not_null default_CURRENT_TIMESTAMP
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const URLHASH_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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'file_id' => array('type' => 'int', 'not null' => true, 'description' => 'thumbnail for what URL/file'),
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'urlhash' => array('type' => 'varchar', 'length' => 64, 'description' => 'sha256 of url field if non-empty'),
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'url' => array('type' => 'text', 'description' => 'URL of thumbnail'),
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'filename' => array('type' => 'text', 'description' => 'if stored locally, filename is put here'),
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'width' => array('type' => 'int', 'description' => 'width of thumbnail'),
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'height' => array('type' => 'int', 'description' => 'height of thumbnail'),
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'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
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),
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'primary key' => array('file_id', 'width', 'height'),
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'indexes' => array(
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'file_thumbnail_file_id_idx' => array('file_id'),
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'file_thumbnail_urlhash_idx' => array('urlhash'),
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),
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'foreign keys' => array(
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'file_thumbnail_file_id_fkey' => array('file', array('file_id' => 'id')),
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)
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);
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}
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/**
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* Save oEmbed-provided thumbnail data
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*
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* @param object $data
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* @param int $file_id
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*/
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public static function saveNew($data, $file_id) {
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if (!empty($data->thumbnail_url)) {
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// Non-photo types such as video will usually
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// show us a thumbnail, though it's not required.
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self::saveThumbnail($file_id,
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$data->thumbnail_url,
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$data->thumbnail_width,
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$data->thumbnail_height);
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} else if ($data->type == 'photo') {
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// The inline photo URL given should also fit within
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// our requested thumbnail size, per oEmbed spec.
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self::saveThumbnail($file_id,
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$data->url,
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$data->width,
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$data->height);
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}
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}
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/**
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* Fetch an entry by using a File's id
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*
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* @param File $file The File object we're getting a thumbnail for.
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* @param boolean $notNullUrl Originally remote thumbnails have a URL stored, we use this to find the "original"
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*
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* @return File_thumbnail
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* @throws NoResultException if no File_thumbnail matched the criteria
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*/
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static function byFile(File $file, $notNullUrl=true) {
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$thumb = new File_thumbnail();
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$thumb->file_id = $file->getID();
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if ($notNullUrl) {
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$thumb->whereAdd('url IS NOT NULL');
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}
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$thumb->orderBy('modified ASC'); // the first created, a somewhat ugly hack
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$thumb->limit(1);
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if (!$thumb->find(true)) {
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throw new NoResultException($thumb);
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}
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return $thumb;
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}
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/**
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* Save a thumbnail record for the referenced file record.
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*
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* FIXME: Add error handling
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*
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* @param int $file_id
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* @param string $url
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* @param int $width
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* @param int $height
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*/
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static function saveThumbnail($file_id, $url, $width, $height, $filename=null)
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{
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$tn = new File_thumbnail;
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$tn->file_id = $file_id;
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$tn->url = $url;
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$tn->filename = $filename;
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$tn->width = intval($width);
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$tn->height = intval($height);
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$tn->insert();
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return $tn;
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}
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static function path($filename)
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{
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File::tryFilename($filename);
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// NOTE: If this is left empty in default config, it will be set to File::path('thumb')
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$dir = common_config('thumbnail', '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 . $filename;
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}
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static function url($filename)
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{
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File::tryFilename($filename);
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// FIXME: private site thumbnails?
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$path = common_config('thumbnail', 'path');
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if (empty($path)) {
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return File::url('thumb')."/{$filename}";
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}
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$protocol = (GNUsocial::useHTTPS() ? 'https' : 'http');
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$server = common_config('thumbnail', 'server') ?: common_config('site', 'server');
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if ($path[mb_strlen($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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public function getFilename()
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{
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return File::tryFilename($this->filename);
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}
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/**
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* @return string full filesystem path to the locally stored thumbnail file
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* @throws FileNotFoundException
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* @throws ServerException
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*/
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public function getPath()
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{
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$oldpath = File::path($this->getFilename());
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$thumbpath = self::path($this->getFilename());
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// If we have a file in our old thumbnail storage path, move (or copy) it to the new one
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// (if the if/elseif don't match, we have a $thumbpath just as we should and can return it)
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if (file_exists($oldpath) && !file_exists($thumbpath)) {
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try {
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// let's get the filename of the File, to check below if it happens to be identical
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$file_filename = $this->getFile()->getFilename();
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} catch (NoResultException $e) {
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// reasonably the function calling us will handle the following as "File_thumbnail entry should be deleted"
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throw new FileNotFoundException($thumbpath);
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} catch (InvalidFilenameException $e) {
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// invalid filename in getFile()->getFilename(), just
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// means the File object isn't stored locally and that
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// means it's safe to move it below.
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$file_filename = null;
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}
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if ($this->getFilename() === $file_filename) {
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// special case where thumbnail file exactly matches stored File filename
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common_debug('File filename and File_thumbnail filename match on '.$this->file_id.', copying instead');
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copy($oldpath, $thumbpath);
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} elseif (!rename($oldpath, $thumbpath)) {
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common_log(LOG_ERR, 'Could not move thumbnail from '._ve($oldpath).' to '._ve($thumbpath));
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throw new ServerException('Could not move thumbnail from old path to new path.');
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} else {
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common_log(LOG_DEBUG, 'Moved thumbnail '.$this->file_id.' from '._ve($oldpath).' to '._ve($thumbpath));
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}
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} elseif (!file_exists($thumbpath)) {
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throw new FileNotFoundException($thumbpath);
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}
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return $thumbpath;
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}
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public function getUrl()
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{
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if (!empty($this->filename) || $this->getFile()->isLocal()) {
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// A locally stored File, so we can dynamically generate a URL.
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$url = common_local_url('attachment_thumbnail', array('attachment'=>$this->file_id));
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if (strpos($url, '?') === false) {
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$url .= '?';
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}
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return $url . http_build_query(array('w'=>$this->width, 'h'=>$this->height));
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}
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// No local filename available, return the remote URL we have stored
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return $this->url;
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}
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public function getHeight()
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{
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return $this->height;
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}
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public function getWidth()
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{
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return $this->width;
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}
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/**
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* @throws UseFileAsThumbnailException from File_thumbnail->getUrl() for stuff like animated GIFs
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*/
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public function getHtmlAttrs(array $orig=array(), $overwrite=true)
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{
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$attrs = [ 'height' => $this->getHeight(),
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'width' => $this->getWidth(),
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'src' => $this->getUrl() ];
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return $overwrite ? array_merge($orig, $attrs) : array_merge($attrs, $orig);
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}
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public function delete($useWhere=false)
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{
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try {
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$thumbpath = self::path($this->getFilename());
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// if file does not exist, try to delete it
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$deleted = !file_exists($thumbpath) || @unlink($thumbpath);
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if (!$deleted) {
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common_log(LOG_ERR, 'Could not unlink existing thumbnail file: '._ve($thumbpath));
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}
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} catch (InvalidFilenameException $e) {
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common_log(LOG_ERR, 'Deleting object but not attempting deleting file: '._ve($e->getMessage()));
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}
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return parent::delete($useWhere);
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}
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public function getFile()
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{
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return File::getByID($this->file_id);
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}
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public function getFileId()
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{
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return $this->file_id;
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}
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static public function hashurl($url)
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{
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if (!mb_strlen($url)) {
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throw new Exception('No URL provided to hash algorithm.');
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}
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return hash(self::URLHASH_ALG, $url);
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}
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public function onInsert()
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{
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$this->setUrlhash();
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}
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public function onUpdate($dataObject=false)
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{
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// if we have nothing to compare with OR it has changed from previous entry
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if (!$dataObject instanceof Managed_DataObject || $this->url !== $dataObject->url) {
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$this->setUrlhash();
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}
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}
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public function setUrlhash()
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{
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$this->urlhash = mb_strlen($this->url)>0 ? self::hashurl($this->url) : null;
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}
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}
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