48 lines
1.1 KiB
PHP
48 lines
1.1 KiB
PHP
<?php
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if (isset($_SERVER['HTTP_REFERER']) && !empty($_SERVER['HTTP_REFERER'])
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&& !preg_match('/^https?:\/\/[a-z0-9]+\.(4chan|4channel)\.org/', $_SERVER['HTTP_REFERER'])) {
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http_response_code(403);
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die();
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}
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if (!isset($_GET['url']) || empty($_GET['url'])) {
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die();
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}
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$url = $_GET['url'];
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$domain = parse_url($url, PHP_URL_HOST);
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if (!$domain) {
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die();
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}
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if (strpos($url, 'http') !== 0) {
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$url = 'http://' . $url;
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}
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$domain = htmlspecialchars($domain, ENT_QUOTES);
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$url = htmlspecialchars(htmlspecialchars_decode($url, ENT_QUOTES), ENT_QUOTES);
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header("Cache-Control: public, immutable");
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?><!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Redirecting...</title>
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<meta http-equiv="refresh" content="2; URL=<?php echo $url ?>">
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<style type="text/css">
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#msg {
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font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;
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text-align: center;
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font-weight: bold;
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font-size: 36pt;
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margin-top: 20%;
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}
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</style>
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</head>
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<body>
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<div id="msg">Redirecting you to <i><?php echo $domain ?></i>...</div>
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</body>
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</html>
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