Amazon S3 URL đã ký trong PHP

Question

Đây là chức năng được rút ra khỏi một plugin WP cũ để trả lại URL Amazon S3 đã ký, nhưng tôi không thể làm cho nó hoạt động! Khi tôi truy cập vào URL ký nó sẽ trả về, tôi có được điều này:

The request signature we calculated does not match the signature you provided. Check your key and signing method.

function s3Url($text) { 
    $AWS_S3_KEY = 'KEY'; 
    $AWS_S3_SECRET = 'SECRET'; 
    $tag_pattern = '/(\[S3 bucket\=(.*?)\ text\=(.*?)\](.*?)\[\/S3\])/i'; 

    define("AWS_S3_KEY", $AWS_S3_KEY); // replace this with your AWS S3 key 
    define("AWS_S3_SECRET", $AWS_S3_SECRET); // replace this with your secret key. 
    $expires = time()+get_option('expire_seconds'); 

    if (preg_match_all ($tag_pattern, $text, $matches)) { 

     for ($m=0; $m<count($matches[0]); $m++) { 
      $bucket = $matches[2][$m]; 
      $link_text = $matches[3][$m]; 
      $resource = $matches[4][$m]; 

      $string_to_sign = "GET\n\n\n$expires\n/".str_replace(".s3.amazonaws.com","",$bucket)."/$resource"; 

      //$string_to_sign = "GET\n\n\n{$expires}\n/{$bucket}/{$resource}"; 
      $signature = urlencode(base64_encode((hash_hmac("sha1", utf8_encode($string_to_sign), AWS_S3_SECRET, TRUE)))); 

      $authentication_params = "AWSAccessKeyId=".AWS_S3_KEY; 
      $authentication_params.= "&Expires={$expires}"; 
      $authentication_params.= "&Signature={$signature}"; 

      $tag_pattern_match = "/(\[S3 bucket\=(.*?)\ text\={$link_text}\]{$resource}\[\/S3\])/i"; 

      if(strlen($link_text) == 0) 
      { 
       $link = "http://{$bucket}/{$resource}?{$authentication_params}"; 
      } 
      else 
      { 
       $link = "<a href='http://{$bucket}/{$resource}?{$authentication_params}'>{$link_text}</a>"; 
      } 

      $text = preg_replace($tag_pattern_match,$link,$text); 
     } 
    } 

    return $text; 
} 

Answer 1

Ví dụ được cung cấp trong Amazon AWS PHP SDK: sdk-latest\sdk-1.3.5\sdk-1.3.5\_samples\cli-s3_get_urls_for_uploads.php đoạn mã sau hoạt động khá tốt:

 /* Execute our queue of batched requests. This may take a few seconds to a 
     few minutes depending on the size of the files and how fast your upload 
     speeds are. */ 
    $file_upload_response = $s3->batch()->send(); 

    /* Since a batch of requests will return multiple responses, let's 
     make sure they ALL came back successfully using `areOK()` (singular 
     responses use `isOK()`). */ 
    if ($file_upload_response->areOK()) 
    { 
     // Loop through the individual filenames 
     foreach ($individual_filenames as $filename) 
     { 
      /* Display a URL for each of the files we uploaded. Since uploads default to 
       private (you can choose to override this setting when uploading), we'll 
       pre-authenticate the file URL for the next 5 minutes. */ 
      echo $s3->get_object_url($bucket, $filename, '5 minutes') . PHP_EOL . PHP_EOL; 
     } 
    }