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34 lines
1.2 KiB
PHP
34 lines
1.2 KiB
PHP
<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse\REST\TinyTinyRSS;
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use JKingWeb\Arsse\Arsse;
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use JKingWeb\Arsse\REST\Response;
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class Icon extends \JKingWeb\Arsse\REST\AbstractHandler {
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public function __construct() {
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}
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public function dispatch(\JKingWeb\Arsse\REST\Request $req): Response {
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if ($req->method != "GET") {
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// only GET requests are allowed
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return new Response(405, "", "", ["Allow: GET"]);
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} elseif (!preg_match("<^(\d+)\.ico$>", $req->url, $match) || !((int) $match[1])) {
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return new Response(404);
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}
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$url = Arsse::$db->subscriptionFavicon((int) $match[1]);
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if ($url) {
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// strip out anything after literal line-end characters; this is to mitigate a potential header (e.g. cookie) injection from the URL
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if (($pos = strpos($url, "\r")) !== false || ($pos = strpos($url, "\n")) !== false) {
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$url = substr($url, 0, $pos);
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}
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return new Response(301, "", "", ["Location: $url"]);
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} else {
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return new Response(404);
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}
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}
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}
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