forked from GNUsocial/gnu-social
dd229e855a
This will probably cause older oEmbed images not to show, since they probably were updated to use empty url entries because they were thought of as local ones. During a migration period maybe you want to change the default value of notNullUrl to 'false' in File_thumbnail::byFile(...)
233 lines
7.8 KiB
PHP
233 lines
7.8 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; // timestamp() 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' => 'timestamp', 'not null' => true, '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->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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// TODO: Store thumbnails in their own directory and don't use File::path here
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return File::path($filename);
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}
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static function url($filename)
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{
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// TODO: Store thumbnails in their own directory and don't use File::url here
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return File::url($filename);
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}
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public function getPath()
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{
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$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 $filepath;
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}
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public function getUrl()
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{
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if (!empty($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 = [
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'height' => $this->getHeight(),
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'width' => $this->getWidth(),
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'src' => $this->getUrl(),
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];
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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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if (!empty($this->filename) && file_exists(File_thumbnail::path($this->filename))) {
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$deleted = @unlink(self::path($this->filename));
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if (!$deleted) {
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common_log(LOG_ERR, sprintf('Could not unlink existing file: "%s"', self::path($this->filename)));
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}
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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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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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