m3u8代理

使用说明

proxy.php?url=

适用于苹果CMS超级播放器

<?php
// 设置CORS头，允许跨域访问
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
header('Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization');

// 处理预检请求
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
  http_response_code(200);
  exit();
}

// 获取参数
$url = isset($_GET['url']) ? trim($_GET['url']) : '';
$type = isset($_GET['type']) ? trim($_GET['type']) : 'auto';
$referer = isset($_GET['referer']) ? trim($_GET['referer']) : '';
$ua = isset($_GET['ua']) ? trim($_GET['ua']) : '';

// 验证URL
if (empty($url)) {
  http_response_code(400);
  echo json_encode(['error' => '缺少URL参数']);
  exit();
}

// URL解码处理 - 这是关键修复
$url = urldecode($url);

// 验证URL格式 - 使用更宽松的验证
if (!filter_var($url, FILTER_VALIDATE_URL) && !preg_match('/^https?:\/\/[a-zA-Z0-9.-]+/', $url)) {
  http_response_code(400);
  echo json_encode(['error' => '无效的URL格式', 'url' => $url]);
  exit();
}

// 安全检查 - 防止SSRF攻击
$parsed_url = parse_url($url);
if (!$parsed_url || !isset($parsed_url['host'])) {
  http_response_code(400);
  echo json_encode(['error' => '无效的URL', 'parsed_url' => $parsed_url]);
  exit();
}

// 检查是否为内网IP - 增加错误处理
$ip = gethostbyname($parsed_url['host']);
if ($ip === $parsed_url['host']) {
  // DNS解析失败，但不一定是错误，可能是有效域名
  // 继续执行，让curl去处理
} else if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
  http_response_code(403);
  echo json_encode(['error' => '禁止访问内网资源', 'ip' => $ip]);
  exit();
}

/**
 * 发送HTTP请求 - 简化版本
 * @param string $url 请求URL
 * @param string $referer 来源
 * @param string $userAgent 用户代理
 * @return array
 */
function fetchContent($url, $referer = '', $userAgent = '') {
  $ch = curl_init();
  
  // 基础配置
  curl_setopt_array($ch, [
      CURLOPT_URL => $url,
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_FOLLOWLOCATION => true,
      CURLOPT_MAXREDIRS => 3,
      CURLOPT_TIMEOUT => 30,
      CURLOPT_CONNECTTIMEOUT => 15,
      CURLOPT_SSL_VERIFYPEER => false,
      CURLOPT_SSL_VERIFYHOST => false,
      CURLOPT_USERAGENT => $userAgent ?: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36 Edg/139.0.0.0'
  ]);
  
  // 设置请求头
  $headers = [
      'Accept: */*',
      'Accept-Language: zh-CN,zh;q=0.9,en;q=0.8',
      'Cache-Control: no-cache',
      'Connection: keep-alive'
  ];
  
  if ($referer) {
      $headers[] = 'Referer: ' . $referer;
  }
  
  curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
  
  // 获取响应头
  curl_setopt($ch, CURLOPT_HEADER, true);
  
  $response = curl_exec($ch);
  $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  $contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
  $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
  $error = curl_error($ch);
  
  curl_close($ch);
  
  if ($response === false) {
      return [
          'success' => false,
          'error' => $error ?: '请求失败',
          'code' => 500
      ];
  }
  
  $headers = substr($response, 0, $headerSize);
  $body = substr($response, $headerSize);
  
  return [
      'success' => true,
      'code' => $httpCode,
      'headers' => $headers,
      'body' => $body,
      'contentType' => $contentType
  ];
}

/**
 * 增强版M3U8文件内容处理
 * 确保播放器从第一个片段开始播放
 */
function processM3U8Content($content, $baseUrl) {
  $lines = explode("\n", $content);
  $baseUrlInfo = parse_url($baseUrl);
  $basePath = dirname($baseUrlInfo['path']);
  $baseScheme = $baseUrlInfo['scheme'] ?? 'http';
  $baseHost = $baseUrlInfo['host'];
  $basePort = isset($baseUrlInfo['port']) ? ':' . $baseUrlInfo['port'] : '';
  
  // 获取当前proxy.php的基本URL
  $proxyBase = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['SCRIPT_NAME']);
  
  foreach ($lines as &$line) {
      $line = trim($line);
      
      // 核心修复：强制从第一个片段开始
      if (strpos($line, '#EXT-X-MEDIA-SEQUENCE:') === 0) {
          $line = '#EXT-X-MEDIA-SEQUENCE:0';  // 强制序号从0开始
          continue;
      }
      
      // 处理EXT-X-KEY标签
      if (strpos($line, '#EXT-X-KEY:') === 0) {
          if (preg_match('/URI="([^"]+)"/', $line, $matches)) {
              $keyUri = $matches[1];
              
              // 处理密钥URI的相对路径
              if (!preg_match('/^https?:\/\//', $keyUri)) {
                  if (strpos($keyUri, '/') === 0) {
                      $keyUri = $baseScheme . '://' . $baseHost . $basePort . $keyUri;
                  } else {
                      $keyUri = $baseScheme . '://' . $baseHost . $basePort . rtrim($basePath, '/') . '/' . ltrim($keyUri, '/');
                  }
              }
              
              // 将密钥URI也通过代理
              $proxyKeyUri = $proxyBase . '/proxy.php?url=' . urlencode($keyUri);
              $line = str_replace($matches[1], $proxyKeyUri, $line);
          }
          continue;
      }
      
      // 跳过空行和注释行(除了EXT-X-KEY)
      if (empty($line) || strpos($line, '#') === 0) {
          continue;
      }
      
      // 处理普通TS文件或播放列表的相对路径
      if (!preg_match('/^https?:\/\//', $line)) {
          if (strpos($line, '/') === 0) {
              $line = $baseScheme . '://' . $baseHost . $basePort . $line;
          } else {
              $line = $baseScheme . '://' . $baseHost . $basePort . rtrim($basePath, '/') . '/' . ltrim($line, '/');
          }
          
          $line = $proxyBase . '/proxy.php?url=' . urlencode($line);
      } else {
          $line = $proxyBase . '/proxy.php?url=' . urlencode($line);
      }
  }
  
  return implode("\n", $lines);
}

/**
 * 获取文件扩展名
 * @param string $url
 * @return string
 */
function getFileExtension($url) {
  $path = parse_url($url, PHP_URL_PATH);
  $extension = pathinfo($path, PATHINFO_EXTENSION);
  return strtolower($extension);
}

// 发送请求
$result = fetchContent($url, $referer, $ua);

if (!$result['success']) {
  http_response_code($result['code']);
  echo json_encode(['error' => $result['error']]);
  exit();
}

// 检查HTTP状态码
if ($result['code'] >= 400) {
  http_response_code($result['code']);
  echo json_encode(['error' => 'HTTP错误: ' . $result['code']]);
  exit();
}

// 获取文件类型
$extension = getFileExtension($url);
$contentType = $result['contentType'] ?: 'application/octet-stream';

// 检查是否是.key文件的请求(密钥文件)
if ($extension === 'key') {
  // 直接返回密钥内容
  header('Content-Type: application/octet-stream');
  header('Content-Length: ' . strlen($result['body']));
  header('Cache-Control: no-cache');
  header('Access-Control-Allow-Origin: *');
  echo $result['body'];
  exit();
}

// 根据文件类型设置响应头
switch ($extension) {
  case 'm3u8':
      $contentType = 'application/vnd.apple.mpegurl';
      break;
  case 'ts':
      $contentType = 'video/mp2t';
      break;
  case 'mp4':
      $contentType = 'video/mp4';
      break;
  case 'flv':
      $contentType = 'video/x-flv';
      break;
}

// 设置响应头
header('Content-Type: ' . $contentType);
header('Content-Length: ' . strlen($result['body']));
header('Cache-Control: public, max-age=300'); // 缓存5分钟
header('Access-Control-Allow-Origin: *');

// 如果是M3U8文件，处理其中的URL
if ($extension === 'm3u8' || strpos($contentType, 'mpegurl') !== false) {
  $result['body'] = processM3U8Content($result['body'], $url);
  // 重新计算内容长度
  header('Content-Length: ' . strlen($result['body']));
}

// 输出内容
echo $result['body'];

?>