138 lines
5.1 KiB
PHP
138 lines
5.1 KiB
PHP
<?php
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/**
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* GridTV — proxy.php
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* Proxy HTTP->HTTPS restreint aux hotes autorises dans config.json
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*/
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// ── Charger la whitelist depuis config.json ────────────────────────────────────
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$config_path = __DIR__ . '/config.json';
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$allowed_hosts = [];
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if (file_exists($config_path)) {
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$config = json_decode(file_get_contents($config_path), true);
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foreach ($config['epg_sources'] ?? [] as $src) {
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foreach (['epg_url', 'm3u_url'] as $key) {
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if (!empty($src[$key])) {
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$host = parse_url($src[$key], PHP_URL_HOST);
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if ($host) $allowed_hosts[] = strtolower($host);
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}
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}
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}
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}
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// ── Valider l'URL demandee ─────────────────────────────────────────────────────
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$url = $_GET['url'] ?? '';
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if (empty($url) || !preg_match('#^https?://#i', $url)) {
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http_response_code(400); die('Invalid URL');
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}
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$parsed = parse_url($url);
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$host = strtolower($parsed['host'] ?? '');
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// Bloquer si hote absent de la whitelist
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if (empty($allowed_hosts) || !in_array($host, $allowed_hosts, true)) {
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http_response_code(403); die('Host not allowed');
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}
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// Bloquer les IPs privees, loopback, metadata cloud
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function is_private_host(string $host): bool {
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// Loopback / localhost
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if ($host === 'localhost' || $host === '::1') return true;
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// Metadata AWS/GCP/Azure
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if ($host === '169.254.169.254' || $host === 'metadata.google.internal') return true;
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// Resoudre et verifier si IP privee
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$ip = filter_var($host, FILTER_VALIDATE_IP) ? $host : gethostbyname($host);
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if (!filter_var($ip, FILTER_VALIDATE_IP)) return true; // echec resolution
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return !filter_var($ip, FILTER_VALIDATE_IP, [
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'flags' => FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE
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]);
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}
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// Note : on autorise les IPs privees si elles sont explicitement dans config.json
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// (cas Tunarr/Jellyfin sur le reseau local) — on bloque seulement les hotes
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// qui ne sont PAS dans la whitelist, ce qui couvre deja le SSRF.
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// ── Proxy ─────────────────────────────────────────────────────────────────────
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$base = preg_replace('#[^/]*(\?.*)?$#', '', $url);
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$origin = $parsed['scheme'] . '://' . $parsed['host'];
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$port = $parsed['port'] ?? null;
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if ($port) $origin .= ':' . $port;
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$path = $parsed['path'] ?? '';
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$is_segment = preg_match('#\.(ts|aac|mp4|m4s|fmp4)(\?|$)#i', $path);
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header('Access-Control-Allow-Origin: *');
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header('Cache-Control: no-cache');
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$ua = $_SERVER['HTTP_USER_AGENT'] ?? 'Mozilla/5.0';
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if ($is_segment) {
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header('Content-Type: video/MP2T');
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header('X-Content-Type-Options: nosniff');
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if (ob_get_level()) ob_end_clean();
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$ch = curl_init($url);
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curl_setopt_array($ch, [
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_TIMEOUT => 30,
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CURLOPT_USERAGENT => $ua,
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CURLOPT_HTTPHEADER => ['Accept: */*'],
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CURLOPT_RETURNTRANSFER => false,
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CURLOPT_WRITEFUNCTION => function($ch, $data) {
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echo $data; flush(); return strlen($data);
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},
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CURLOPT_HEADERFUNCTION => function($ch, $header) {
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$h = trim($header);
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if (preg_match('/^Content-Type:/i', $h)) header($h);
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return strlen($header);
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},
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]);
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$ok = curl_exec($ch);
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$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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if (!$ok || $code >= 400) http_response_code($code ?: 502);
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curl_close($ch);
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} else {
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$ch = curl_init($url);
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curl_setopt_array($ch, [
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_TIMEOUT => 15,
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CURLOPT_USERAGENT => $ua,
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CURLOPT_HTTPHEADER => ['Accept: */*'],
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CURLOPT_RETURNTRANSFER => true,
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]);
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$body = curl_exec($ch);
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$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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if ($body === false || $code >= 400) {
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http_response_code($code ?: 502); die("Upstream error $code");
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}
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header('Content-Type: application/vnd.apple.mpegurl');
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$proxy_base = (isset($_SERVER['HTTPS']) ? 'https' : 'http')
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. '://' . $_SERVER['HTTP_HOST']
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. strtok($_SERVER['REQUEST_URI'], '?')
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. '?url=';
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$out = [];
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foreach (explode("\n", $body) as $line) {
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$line = rtrim($line);
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if ($line === '' || $line[0] === '#') {
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$line = preg_replace_callback('/URI="([^"]+)"/', function($m) use ($base, $origin, $proxy_base) {
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$seg = strpos($m[1], 'http') === 0 ? $m[1]
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: ($m[1][0] === '/' ? $origin . $m[1] : $base . $m[1]);
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return 'URI="' . $proxy_base . urlencode($seg) . '"';
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}, $line);
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$out[] = $line;
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} else {
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$seg = strpos($line, 'http') === 0 ? $line
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: ($line[0] === '/' ? $origin . $line : $base . $line);
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$out[] = $proxy_base . urlencode($seg);
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}
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}
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echo implode("\n", $out);
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}
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