使用 PHP POST 到 Web 服務的摘要式身份驗證的客戶端部分

Question

我正在嘗試發布到 Web 服務（非 RESTful）並通過 PHP 獲得響應。 但是，該 Web 服務需要摘要式身份驗證。

我一直在網上搜索，發現大多數討論和文章都是關於另一種方式（向用戶請求摘要身份驗證），而不是使用 PHP 響應它。

我能夠使用該線程提供的代碼生成摘要響應： HTTP Digest authentication in PHP ，但問題是將它與（或不？）POST 數據一起發送。

這是我正在使用的代碼：

$domain = "https://api.example.com";
$uri = "/ws.asmx/do";

// get headers
$response1_array = get_headers($web_service_url);
// get request part of digest auth
$response1 = $response1_array[5];
// get things behind "WWW-Authenticate:"
$response1 = substr($response1, 18);

// response() is a invented function to calculate the response according to the RFC2617
$response2 = response($response1, "username", "password", "GET", $uri);

// manually add some headers for POST, and fill out the parts that the calculation function missed
// for auth
$header =  
        "Host: api.example.com\r\n" .
        "Content-Type: application/x-www-form-urlencoded\r\n" .
        "Authorization: " . $response2 . ", nc=\"00000001\", opaque=\"0000000000000000\"" . "\r\nContent-Length: 0\r\n\r\n";

// echo the response from server
echo do_post_request($web_service_url, "", $header);

function do_post_request($url, $data, $optional_headers = null)
{
  $params = array('http' => array(
              'method' => 'POST',
              'content' => $data
            ));
  if ($optional_headers !== null) {
    $params['http']['header'] = $optional_headers;
  }
  $ctx = stream_context_create($params);

  $fp = fopen($url, 'rb', false, $ctx);

  if (!$fp) {
    throw new Exception("Problem with $url");
  }
  $response = stream_get_contents($fp);
  if ($response === false) {
    throw new Exception("Problem reading data from $url");
  }
  return $response;
}

在回應中：

$response1(from web service):
    Digest realm="example.com", nonce="OS82LzIwMTMgMTI6MDI6NDYgUE0", opaque="0000000000000000", stale=false, algorithm=MD5, qop="auth"

$response2(I calculated given the server response):
    Digest username="username", realm="example.com", nonce="OS82LzIwMTMgMTI6MDI6NDYgUE0", uri="/ws.asmx/do", cnonce="1378494106", nc="1", response="0f96788854cf2098ba22c6121529d7de", qop="auth"

the final (2nd) response from server:
    Warning: fopen(https://api.example.com/ws.asmx/do): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in ...

我不明白為什么在這種情況下服務器響應 500 錯誤。 代碼有什么問題嗎？ 或者有沒有人以前遇到過這個問題並解決了它並且可以幫助我解決問題？

問候，

米洛

Answer 1

最終在2天的摸索后用cURL解決了它。 我想這是第一次發布一個用於摘要身份驗證的現成PHP代碼，希望它可以幫助那些和我在同一個溝渠中的人。

碼：

<?php

error_reporting(E_ALL); 
ini_set( 'display_errors','1');

$url = "https://api.example.com/ws.asmx/do";
$username = "username";
$password = "pwd";
$post_data = array(
        'fieldname1' => 'value1',
        'fieldname2' => 'value2'
  );

$options = array(
        CURLOPT_URL            => $url,
        CURLOPT_HEADER         => true,    
        CURLOPT_VERBOSE        => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_SSL_VERIFYPEER => false,    // for https
        CURLOPT_USERPWD        => $username . ":" . $password,
        CURLOPT_HTTPAUTH       => CURLAUTH_DIGEST,
        CURLOPT_POST           => true,
        CURLOPT_POSTFIELDS     => http_build_query($post_data) 
);

$ch = curl_init();

curl_setopt_array( $ch, $options );

try {
  $raw_response  = curl_exec( $ch );

  // validate CURL status
  if(curl_errno($ch))
      throw new Exception(curl_error($ch), 500);

  // validate HTTP status code (user/password credential issues)
  $status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  if ($status_code != 200)
      throw new Exception("Response with Status Code [" . $status_code . "].", 500);

} catch(Exception $ex) {
    if ($ch != null) curl_close($ch);
    throw new Exception($ex);
}

if ($ch != null) curl_close($ch);

echo "raw response: " . $raw_response; 

?>

Answer 2

如果要使用 PUT 方法發送 JSON 數據：

<?php

error_reporting(E_ALL); 
ini_set( 'display_errors','1');

$url = "https://api.example.com/ws.asmx/do";
$username = "username";
$password = "pwd";
$post_data = array(
        'fieldname1' => 'value1',
        'fieldname2' => 'value2'
  );

$options = array(
        CURLOPT_URL            => $url,
        CURLOPT_HEADER         => true,    
        CURLOPT_VERBOSE        => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_SSL_VERIFYPEER => false,    // for https
        CURLOPT_USERPWD        => $username . ":" . $password,
        CURLOPT_HTTPAUTH       => CURLAUTH_DIGEST,
        CURLOPT_CUSTOMREQUEST  => "PUT",
        CURLOPT_POSTFIELDS     => json_encode($post_data) ,
);

$ch = curl_init();

curl_setopt_array( $ch, $options );

try {
  $raw_response  = curl_exec( $ch );

  // validate CURL status
  if(curl_errno($ch))
      throw new Exception(curl_error($ch), 500);

  // validate HTTP status code (user/password credential issues)
  $status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  if ($status_code != 200)
      throw new Exception("Response with Status Code [" . $status_code . "].", 500);

} catch(Exception $ex) {
    if ($ch != null) curl_close($ch);
    throw new Exception($ex);
}

if ($ch != null) curl_close($ch);

echo "raw response: " . $raw_response; 

?>