rip-proxy.php

<?php

declare(strict_types=1);

$url = $_GET['url'] ?? '';

if ($url === '' || !filter_var($url, FILTER_VALIDATE_URL)) {
    http_response_code(400);
    header('Content-Type: text/plain; charset=utf-8');
    echo 'Invalid URL';
    exit;
}

$parts = parse_url($url);
$scheme = strtolower($parts['scheme'] ?? '');

if (!in_array($scheme, ['http', 'https'], true)) {
    http_response_code(400);
    header('Content-Type: text/plain; charset=utf-8');
    echo 'Only http and https URLs are allowed';
    exit;
}

$context = stream_context_create([
    'http' => [
        'timeout' => 15,
        'follow_location' => 1,
        'max_redirects' => 5,
        'user_agent' => 'RIPscrip Viewer Proxy',
    ],
]);

$data = @file_get_contents($url, false, $context);

if ($data === false) {
    http_response_code(502);
    header('Content-Type: text/plain; charset=utf-8');
    echo 'Could not fetch remote URL';
    exit;
}

header('Content-Type: text/plain; charset=utf-8');
header('Access-Control-Allow-Origin: *');
echo $data;