security: harden proxy.php with config whitelist, fix XSS via EPG innerHTML

proxy.php

@@ -1,18 +1,64 @@
 <?php
 /**
- * GridTV — proxy.php (Apache + cURL)
+ * GridTV — proxy.php
+ * Proxy HTTP->HTTPS restreint aux hotes autorises dans config.json
  */
 
+// ── Charger la whitelist depuis config.json ────────────────────────────────────
+$config_path = __DIR__ . '/config.json';
+$allowed_hosts = [];
+
+if (file_exists($config_path)) {
+    $config = json_decode(file_get_contents($config_path), true);
+    foreach ($config['epg_sources'] ?? [] as $src) {
+        foreach (['epg_url', 'm3u_url'] as $key) {
+            if (!empty($src[$key])) {
+                $host = parse_url($src[$key], PHP_URL_HOST);
+                if ($host) $allowed_hosts[] = strtolower($host);
+            }
+        }
+    }
+}
+
+// ── Valider l'URL demandee ─────────────────────────────────────────────────────
 $url = $_GET['url'] ?? '';
+
 if (empty($url) || !preg_match('#^https?://#i', $url)) {
     http_response_code(400); die('Invalid URL');
 }
 
+$parsed = parse_url($url);
+$host   = strtolower($parsed['host'] ?? '');
+
+// Bloquer si hote absent de la whitelist
+if (empty($allowed_hosts) || !in_array($host, $allowed_hosts, true)) {
+    http_response_code(403); die('Host not allowed');
+}
+
+// Bloquer les IPs privees, loopback, metadata cloud
+function is_private_host(string $host): bool {
+    // Loopback / localhost
+    if ($host === 'localhost' || $host === '::1') return true;
+    // Metadata AWS/GCP/Azure
+    if ($host === '169.254.169.254' || $host === 'metadata.google.internal') return true;
+    // Resoudre et verifier si IP privee
+    $ip = filter_var($host, FILTER_VALIDATE_IP) ? $host : gethostbyname($host);
+    if (!filter_var($ip, FILTER_VALIDATE_IP)) return true; // echec resolution
+    return !filter_var($ip, FILTER_VALIDATE_IP, [
+        'flags' => FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE
+    ]);
+}
+
+// Note : on autorise les IPs privees si elles sont explicitement dans config.json
+// (cas Tunarr/Jellyfin sur le reseau local) — on bloque seulement les hotes
+// qui ne sont PAS dans la whitelist, ce qui couvre deja le SSRF.
+
+// ── Proxy ─────────────────────────────────────────────────────────────────────
 $base   = preg_replace('#[^/]*(\?.*)?$#', '', $url);
-$origin = parse_url($url, PHP_URL_SCHEME) . '://' . parse_url($url, PHP_URL_HOST);
+$origin = $parsed['scheme'] . '://' . $parsed['host'];
-$port   = parse_url($url, PHP_URL_PORT);
+$port   = $parsed['port'] ?? null;
 if ($port) $origin .= ':' . $port;
-$path = parse_url($url, PHP_URL_PATH) ?? '';
+$path = $parsed['path'] ?? '';
 $is_segment = preg_match('#\.(ts|aac|mp4|m4s|fmp4)(\?|$)#i', $path);
 
 header('Access-Control-Allow-Origin: *');
@@ -21,7 +67,6 @@ header('Cache-Control: no-cache');
 $ua = $_SERVER['HTTP_USER_AGENT'] ?? 'Mozilla/5.0';
 
 if ($is_segment) {
-    // Segment binaire — stream via cURL chunk par chunk
     header('Content-Type: video/MP2T');
     header('X-Content-Type-Options: nosniff');
 
@@ -35,28 +80,20 @@ if ($is_segment) {
         CURLOPT_HTTPHEADER     => ['Accept: */*'],
         CURLOPT_RETURNTRANSFER => false,
         CURLOPT_WRITEFUNCTION  => function($ch, $data) {
-            echo $data;
+            echo $data; flush(); return strlen($data);
-            flush();
-            return strlen($data);
         },
         CURLOPT_HEADERFUNCTION => function($ch, $header) {
             $h = trim($header);
-            if (preg_match('/^Content-Type:/i', $h)) {
+            if (preg_match('/^Content-Type:/i', $h)) header($h);
-                header($h);
-            }
             return strlen($header);
         },
     ]);
-
     $ok   = curl_exec($ch);
     $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
-    if (!$ok || $code >= 400) {
+    if (!$ok || $code >= 400) http_response_code($code ?: 502);
-        http_response_code($code ?: 502);
-    }
     curl_close($ch);
 
 } else {
-    // Playlist .m3u8 — fetch + réécriture URLs
     $ch = curl_init($url);
     curl_setopt_array($ch, [
         CURLOPT_FOLLOWLOCATION => true,
@@ -70,8 +107,7 @@ if ($is_segment) {
     curl_close($ch);
 
     if ($body === false || $code >= 400) {
-        http_response_code($code ?: 502);
+        http_response_code($code ?: 502); die("Upstream error $code");
-        die("Upstream error $code");
     }
 
     header('Content-Type: application/vnd.apple.mpegurl');
@@ -85,7 +121,7 @@ if ($is_segment) {
     foreach (explode("\n", $body) as $line) {
         $line = rtrim($line);
         if ($line === '' || $line[0] === '#') {
-            $line = preg_replace_callback('/URI="([^"]+)"/', function($m) use ($base, $proxy_base) {
+            $line = preg_replace_callback('/URI="([^"]+)"/', function($m) use ($base, $origin, $proxy_base) {
                 $seg = strpos($m[1], 'http') === 0 ? $m[1]
                      : ($m[1][0] === '/' ? $origin . $m[1] : $base . $m[1]);
                 return 'URI="' . $proxy_base . urlencode($seg) . '"';

src/js/mobile.js

@@ -39,12 +39,12 @@ function renderMobile() {
       }
 
       const timeCol = document.createElement('div'); timeCol.className='mobile-program-time';
-      timeCol.innerHTML = `<span>${fmtTime(p.start)}</span><span>${fmtTime(p.stop)}</span>`;
+      timeCol.innerHTML = `<span>${esc(fmtTime(p.start))}</span><span>${esc(fmtTime(p.stop))}</span>`;
       item.appendChild(timeCol);
 
       const info = document.createElement('div'); info.className='mobile-program-info';
       const ep = fmtEpisode(p.season, p.episode);
-      info.innerHTML = `<div class="mobile-program-title">${p.title}</div><div class="mobile-program-dur">${ep ? ep + ' · ' : ''}${dur} min</div>`;
+      info.innerHTML = `<div class="mobile-program-title">${esc(p.title)}</div><div class="mobile-program-dur">${ep ? esc(ep) + ' · ' : ''}${dur} min</div>`;
       item.appendChild(info);
 
       if (isLive) {

src/js/search.js

@@ -179,12 +179,12 @@ function renderMobileFiltered(filteredChannels, q) {
       }
 
       const timeCol = document.createElement('div'); timeCol.className = 'mobile-program-time';
-      timeCol.innerHTML = `<span>${fmtTime(p.start)}</span><span>${fmtTime(p.stop)}</span>`;
+      timeCol.innerHTML = `<span>${esc(fmtTime(p.start))}</span><span>${esc(fmtTime(p.stop))}</span>`;
       item.appendChild(timeCol);
 
       const info = document.createElement('div'); info.className = 'mobile-program-info';
       const ep = fmtEpisode(p.season, p.episode);
-      info.innerHTML = `<div class="mobile-program-title">${p.title}</div><div class="mobile-program-dur">${ep ? ep + ' · ' : ''}${dur} min</div>`;
+      info.innerHTML = `<div class="mobile-program-title">${esc(p.title)}</div><div class="mobile-program-dur">${ep ? esc(ep) + ' · ' : ''}${dur} min</div>`;
       item.appendChild(info);
 
       if (isLive) {

src/js/utils.js

@@ -1,4 +1,11 @@
 
+// Echapper les donnees issues de l'EPG pour eviter les injections HTML
+function esc(str) {
+  const d = document.createElement('div');
+  d.textContent = str || '';
+  return d.innerHTML;
+}
+
 let channels = [];
 let programs = {};
 let m3uStreams = {}; // slug normalisé → url stream

version.json

@@ -1,3 +1,3 @@
 {
-  "version": "1.4.1"
+  "version": "1.4.2"
 }