Apache HttpClient 摘要认证

Question

基本上我需要做的是执行摘要身份验证。我尝试的第一件事是可用的官方示例here。 但是当我尝试执行它时（通过一些小的更改，使用 Post 而不是 Get 方法）我得到了一个

org.apache.http.auth.MalformedChallengeException: missing nonce in challange
at org.apache.http.impl.auth.DigestScheme.processChallenge(DigestScheme.java:132)

当失败时，我尝试使用：

DefaultHttpClient client = new DefaultHttpClient();
client.getCredentialsProvider().setCredentials(new AuthScope(null, -1, null), new UsernamePasswordCredentials("<username>", "<password>"));

HttpPost post = new HttpPost(URI.create("http://<someaddress>"));
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("domain", "<username>"));
post.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

DigestScheme digestAuth = new DigestScheme();
digestAuth.overrideParamter("algorithm", "MD5");
digestAuth.overrideParamter("realm", "http://<someaddress>");
digestAuth.overrideParamter("nonce", Long.toString(new Random().nextLong(), 36));
digestAuth.overrideParamter("qop", "auth");
digestAuth.overrideParamter("nc", "0");
digestAuth.overrideParamter("cnonce", DigestScheme.createCnonce());

Header auth = digestAuth.authenticate(new
      UsernamePasswordCredentials("<username>", "<password>"), post);
System.out.println(auth.getName());
System.out.println(auth.getValue());
post.setHeader(auth);


HttpResponse ret = client.execute(post);
ByteArrayOutputStream v2 = new ByteArrayOutputStream();
ret.getEntity().writeTo(v2);
System.out.println("----------------------------------------");
System.out.println(v2.toString());
System.out.println("----------------------------------------");
System.out.println(ret.getStatusLine().getReasonPhrase());
System.out.println(ret.getStatusLine().getStatusCode());

起初我只覆盖了“realm”和“nonce”DigestScheme 参数。但事实证明，在服务器上运行的 PHP 脚本需要所有其他参数，但无论我是否指定它们，当我调用其 authenticate() 方法时，DigestScheme 都不会在 Authorization RequestPreperty 中生成它们。 PHP 脚本返回 HTTP 响应代码 200，并显示 PHP 脚本需要 cnonce、nc 和 qop 参数的消息。

我已经为此苦苦挣扎了两天，但没有运气。基于一切，我认为问题的原因是 PHP 脚本。在我看来，当应用尝试未经授权访问它时，它不会发送挑战。

有什么想法吗？

编辑： 还有一件事，我试过用 cURL 连接，它可以工作。

Answer 1

这段代码 sn-p 对我有用。您必须提供可以通过查看从主机获得的 401 响应标头来获得的领域。

val credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(AuthScope.ANY,
  new UsernamePasswordCredentials(user, password));
val authCache = new BasicAuthCache();
val digestScheme = new DigestScheme();

digestScheme.overrideParamter("realm", "**Name of the Realm**");
// Nonce value
digestScheme.overrideParamter("nonce", "whatever");

authCache.put(targetHost, digestScheme);

context.setCredentialsProvider(credsProvider);
context.setAuthCache(authCache);

val httpget = new HttpGet(url);

val response = httpClient.execute(targetHost, httpget, context);

Answer 2

验证代码后，我设法使用digestScheme 进行摘要登录。

digestAuth.processChallenge(null);

强制解释前面的输入参数。 null 参数是一个标头，基于发送的标头（如果有）。

现在使用qop/nc，digestScheme 可以按要求工作。 在安卓上运行

digestAuth.overrideParamter("algorithm", "MD5");
digestAuth.overrideParamter("realm", serverRealm);
digestAuth.overrideParamter("nonce", Long.toString(new Random().nextLong(), 36));
digestAuth.overrideParamter("qop", "auth");//   not effective 
digestAuth.overrideParamter("nc",""+sequence);//nt effective 
digestAuth.overrideParamter("cnonce", DigestScheme.createCnonce());
digestAuth.overrideParamter("opaque","ba897c2f0f3de9c6f52d");
String err;
try
{
    digestAuth.processChallenge(null);
    //force  qop in use  chalange  on return header ????!!!!
}
catch (Exception e)
{ 
    err=e.getLocalizedMessage();
}

Answer 3

private static byte[] downloadFileWithDigitAuth(String url, String username, String password) {
    byte[] bytes = null;
    CloseableHttpClient httpClient = HttpClientBuilder.create().build();
    HttpGet httpGet = new HttpGet(url);
    HttpContext httpContext = new BasicHttpContext();
    CloseableHttpResponse httpResponse = null;
    try {
        httpResponse = httpClient.execute(httpGet, httpContext);

        if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
            Header authHeader = httpResponse.getFirstHeader(AUTH.WWW_AUTH);
            DigestScheme digestScheme = new DigestScheme();

            /*
            override values if need
            No need override values such as nonce, opaque, they are generated by server side
            */
            digestScheme.overrideParamter("realm", "User Login Required !!");
            digestScheme.processChallenge(authHeader);

            UsernamePasswordCredentials creds = new UsernamePasswordCredentials(username, password);
            httpGet.addHeader(digestScheme.authenticate(creds, httpGet, httpContext));

            httpResponse.close();
            httpResponse = httpClient.execute(httpGet);
        }
        bytes = IOUtils.toByteArray(httpResponse.getEntity().getContent());
    } catch (IOException | MalformedChallengeException | AuthenticationException e) {
        e.printStackTrace();
    }
    finally {
        if (httpResponse != null) {
            try {
                httpResponse.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return bytes;
}

分级：

compile group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.12'
compile group: 'commons-io', name: 'commons-io', version: '2.6'

Answer 4

你们把事情弄得这么复杂。如果你阅读 apache httpclient 的文档，那将是超级简单的。

protected static void downloadDigest(URL url, FileOutputStream fos)
    throws IOException {
    HttpHost targetHost = new HttpHost(url.getHost(), url.getPort(), url.getProtocol());
    CloseableHttpClient httpClient = HttpClients.createDefault();
    HttpClientContext context = HttpClientContext.create();

    String credential = url.getUserInfo();
    if (credential != null) {
        String user = credential.split(":")[0];
        String password = credential.split(":")[1];

        CredentialsProvider credsProvider = new BasicCredentialsProvider();
        credsProvider.setCredentials(AuthScope.ANY,
            new UsernamePasswordCredentials(user, password));
        AuthCache authCache = new BasicAuthCache();
        DigestScheme digestScheme = new DigestScheme();
        authCache.put(targetHost, digestScheme);

        context.setCredentialsProvider(credsProvider);
        context.setAuthCache(authCache);
    }

    HttpGet httpget = new HttpGet(url.getPath());

    CloseableHttpResponse response = httpClient.execute(targetHost, httpget, context);

    try {
        ReadableByteChannel rbc = Channels.newChannel(response.getEntity().getContent());
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } finally {
        response.close();
    }
}