<?php
/**
- * @file src/Module/Proxy.php
- * @brief Based upon "Privacy Image Cache" by Tobias Hößl <https://github.com/CatoTH/>
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
+
namespace Friendica\Module;
-use Friendica\App;
use Friendica\BaseModule;
-use Friendica\Core\Config;
-use Friendica\Core\L10n;
-use Friendica\Core\System;
-use Friendica\Database\DBA;
+use Friendica\Core\Logger;
+use Friendica\DI;
use Friendica\Model\Photo;
use Friendica\Object\Image;
-use Friendica\Util\DateTimeFormat;
-use Friendica\Util\Network;
+use Friendica\Util\HTTPSignature;
use Friendica\Util\Proxy as ProxyUtils;
/**
- * @brief Module Proxy
+ * Module Proxy
*
* urls:
* /proxy/[sub1/[sub2/]]<base64url image url>[.ext][:size]
{
/**
- * @brief Initializer method for this class.
+ * Initializer method for this class.
*
* Sets application instance and checks if /proxy/ path is writable.
*
*/
- public static function init()
+ public static function init(array $parameters = [])
{
// Set application instance here
- $a = self::getApp();
+ $a = DI::app();
/*
* Pictures are stored in one of the following ways:
$request = self::getRequestInfo();
if (empty($request['url'])) {
- System::httpExit(400, ['title' => L10n::t('Bad Request.')]);
+ throw new \Friendica\Network\HTTPException\BadRequestException();
}
// Webserver already tried direct cache...
// Try to use photo from db
self::responseFromDB($request);
-
//
// If script is here, the requested url has never cached before.
// Let's fetch it, scale it if required, then save it in cache.
//
-
// It shouldn't happen but it does - spaces in URL
$request['url'] = str_replace(' ', '+', $request['url']);
- $redirects = 0;
- $fetchResult = Network::fetchUrlFull($request['url'], true, $redirects, 10);
+ $fetchResult = HTTPSignature::fetchRaw($request['url'], local_user(), true, ['timeout' => 10]);
$img_str = $fetchResult->getBody();
+ // If there is an error then return a blank image
+ if ((substr($fetchResult->getReturnCode(), 0, 1) == '4') || empty($img_str)) {
+ Logger::info('Error fetching image', ['image' => $request['url'], 'return' => $fetchResult->getReturnCode(), 'empty' => empty($img_str)]);
+ self::responseError();
+ // stop.
+ }
+
$tempfile = tempnam(get_temppath(), 'cache');
file_put_contents($tempfile, $img_str);
$mime = mime_content_type($tempfile);
unlink($tempfile);
- // If there is an error then return a blank image
- if ((substr($fetchResult->getReturnCode(), 0, 1) == '4') || (!$img_str)) {
- self::responseError($request);
- // stop.
- }
-
$image = new Image($img_str, $mime);
if (!$image->isValid()) {
- self::responseError($request);
+ Logger::info('The image is invalid', ['image' => $request['url'], 'mime' => $mime]);
+ self::responseError();
// stop.
}
-
+
$basepath = $a->getBasePath();
-
+
// Store original image
if ($direct_cache) {
// direct cache , store under ./proxy/
/**
- * @brief Build info about requested image to be proxied
+ * Build info about requested image to be proxied
*
* @return array
* [
*/
private static function getRequestInfo()
{
- $a = self::getApp();
- $url = '';
+ $a = DI::app();
$size = 1024;
$sizetype = '';
-
-
+
// Look for filename in the arguments
+ // @TODO: Replace with parameter from router
if (($a->argc > 1) && !isset($_REQUEST['url'])) {
if (isset($a->argv[3])) {
$url = $a->argv[3];
}
/// @TODO: Why? And what about $url in this case?
+ /// @TODO: Replace with parameter from router
if (isset($a->argv[3]) && ($a->argv[3] == 'thumb')) {
$size = 200;
}
$url = base64_decode(strtr($url, '-_', '+/'), true);
} else {
- $url = defaults($_REQUEST, 'url', '');
+ $url = $_REQUEST['url'] ?? '';
}
-
+
return [
'url' => $url,
'urlhash' => 'pic:' . sha1($url),
/**
- * @brief setup ./proxy folder for direct cache
+ * setup ./proxy folder for direct cache
*
* @return bool False if direct cache can't be used.
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function setupDirectCache()
{
- $a = self::getApp();
+ $a = DI::app();
$basepath = $a->getBasePath();
// If the cache path isn't there, try to create it
// Checking if caching into a folder in the webroot is activated and working
$direct_cache = (is_dir($basepath . '/proxy') && is_writable($basepath . '/proxy'));
- // we don't use direct cache if image url is passed in args and not in querystring
+ // we don't use direct cache if image url is passed in args and not in querystring
$direct_cache = $direct_cache && ($a->argc > 1) && !isset($_REQUEST['url']);
-
+
return $direct_cache;
}
/**
- * @brief Try to reply with image in cachefile
+ * Try to reply with image in cachefile
*
* @param array $request Array from getRequestInfo
*
}
/**
- * @brief Try to reply with image in database
+ * Try to reply with image in database
*
* @param array $request Array from getRequestInfo
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
- private static function responseFromDB(&$request) {
-
+ private static function responseFromDB(&$request)
+ {
$photo = Photo::getPhoto($request['urlhash']);
if ($photo !== false) {
// stop.
}
}
-
+
/**
- * @brief Output a blank image, without cache headers, in case of errors
+ * In case of an error just stop. We don't return content to avoid caching problems
*
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
- private static function responseError() {
- header('Content-type: ' . $img->getType());
- echo file_get_contents('images/blank.png');
- exit();
+ private static function responseError()
+ {
+ throw new \Friendica\Network\HTTPException\InternalServerErrorException();
}
/**
- * @brief Output the image with cache headers
+ * Output the image with cache headers
*
* @param Image $img
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
private static function responseImageHttpCache(Image $img)
{
if (is_null($img) || !$img->isValid()) {
+ Logger::info('The cached image is invalid');
self::responseError();
// stop.
}
exit();
}
}
-
-
projects / friendica.git / blobdiff