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46 lines
1.2 KiB
PHP
46 lines
1.2 KiB
PHP
<?php
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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require_once __DIR__ . "/../required.php";
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header("Content-Type: text/plain;utf-8");
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$urlparts = explode("/", $_GET['file']);
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$fileparts = explode(".", end($urlparts));
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if (count($fileparts) != 3 || !preg_match("/[0-9]+/", $fileparts[1]) || $fileparts[2] != "jpg") {
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http_response_code(403);
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die("Invalid filename.");
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}
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if (!preg_match("/^[A-Za-z0-9\-!_]+$/", $fileparts[0])) {
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http_response_code(403);
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die("Encoded image URL invalid, refusing to parse.");
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}
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if (strpos($fileparts[0], "SHA1_") === 0) {
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$hash = str_replace("SHA1_", "", $fileparts[0]);
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if ($database->has("imagecache", ["hash" => $hash])) {
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$url = $database->get("imagecache", 'url', ["hash" => $hash]);
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echo $url;
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} else {
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http_response_code(404);
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die("Not found.");
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}
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} else {
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$url = Base64::decode($fileparts[0]);
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}
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if (!filter_var($url, FILTER_VALIDATE_URL)) {
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http_response_code(403);
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die("Invalid URL.");
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}
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header("Content-Type: image/jpeg");
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echo Thumbnail::addThumbnailToCache($url, (int) $fileparts[1]);
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