Question

我正在尝试使用kerberos / HTTP主机进行身份验证。使用Apache HttpClient作为我的客户端 - 以及this source.的略微修改版本我的Kerberos身份验证完全正常，我希望知道如何以编程方式设置登录凭据。目前，凭据是通过控制台手动输入的，但我希望在运行时由我选择。 [实际上，我希望自动化并加载测试具有大量用户的服务器。 ]

编辑：以下是相关部分的代码段：

..
        NegotiateSchemeFactory nsf = new NegotiateSchemeFactory();        
        httpclient.getAuthSchemes().register(AuthPolicy.SPNEGO, nsf);

        Credentials use_jaas_creds = new Credentials() {

            public String getPassword() {
                return null;
            }

            public Principal getUserPrincipal() {
                return null;
            }    
        };

        httpclient.getCredentialsProvider().setCredentials(
                new AuthScope(null, -1, null),
                use_jaas_creds);

        HttpUriRequest request = new HttpGet("http://kerberoshost/");
        HttpResponse response = httpclient.execute(request);
 ..

接口Credentials有两个方法 - getPassword()和getUserPrincipal()，但是根据我做的一些调试，它们似乎根本没有被调用。

我在这里缺少什么？什么是静态设置凭据的更简洁方法？

非常similar question had been asked before，但是keytabs / login.conf hack过于繁琐，对于使用大量用户凭据进行自动负载测试而言，这不是一个实用选项。感谢任何帮助。

Answer 1

由于SPNEGO，您发布的代码段（凭据类设置）不会被httpclient用于身份验证。

您可以使用DoAs + CallBackhandler来传递用户＆amp;运行时的密码。

然后你需要一个login.conf或其中的任何名称：

KrbLogin{
 com.sun.security.auth.module.Krb5LoginModule required doNotPrompt=false debug=true useTicketCache=false;
};

您可以将名称从“KrbLogin”更改为您喜欢的名称（请记住在Java代码中使用相同的名称）

并使用java系统属性设置：

System.setProperty("java.security.auth.login.config", "login.conf");

或

-Djava.security.auth.login.config=login.config

然后你需要一个krb5配置文件（通常是krb5.ini或krb5.conf，里面有正确的配置）

如果您的工作站（或服务器）已正确配置为Kerberos，则此类应该按原样运行（使用propper文件login.conf和krb5.ini）我使用httpclient 4.3.3和java 1.7来测试它：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthSchemeProvider;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.Credentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.AuthSchemes;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.impl.auth.SPNegoSchemeFactory;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import javax.security.auth.Subject;
import javax.security.auth.callback.*;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import java.io.IOException;
import java.security.AccessController;
import java.security.Principal;
import java.security.PrivilegedAction;
import java.util.Set;

public class HttpClientKerberosDoAS {

    public static void main(String[] args) throws Exception {

        System.setProperty("java.security.auth.login.config", "login.conf");
        System.setProperty("java.security.krb5.conf", "krb5.conf");
        System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");

        String user = "";
        String password = "";
        String url = "";

        if (args.length == 3) {
            user = args[0];
            password = args[1];
            url = args[2];


            HttpClientKerberosDoAS kcd = new HttpClientKerberosDoAS();

            System.out.println("Loggin in with user [" + user + "] password [" + password + "] ");
            kcd.test(user, password, url);
        } else {
            System.out.println("run with User Password URL");
        }

    }

    public void test(String user, String password, final String url) {
        try {

            LoginContext loginCOntext = new LoginContext("KrbLogin", new KerberosCallBackHandler(user, password));
            loginCOntext.login();

            PrivilegedAction sendAction = new PrivilegedAction() {

                @Override
                public Object run() {
                    try {

                        Subject current = Subject.getSubject(AccessController.getContext());
                        System.out.println("----------------------------------------");
                        Set<Principal> principals = current.getPrincipals();
                        for (Principal next : principals) {
                            System.out.println("DOAS Principal: " + next.getName());
                        }
                        System.out.println("----------------------------------------");

                        call(url);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    return true;
                }
            };

            Subject.doAs(loginCOntext.getSubject(), sendAction);

        } catch (LoginException le) {
            le.printStackTrace();
        }
    }

    private void call(String url) throws IOException {
        HttpClient httpclient = getHttpClient();

        try {

            HttpUriRequest request = new HttpGet(url);
            HttpResponse response = httpclient.execute(request);
            HttpEntity entity = response.getEntity();

            System.out.println("----------------------------------------");

            System.out.println("STATUS >> " + response.getStatusLine());

            if (entity != null) {
                System.out.println("RESULT >> " + EntityUtils.toString(entity));
            }

            System.out.println("----------------------------------------");

            EntityUtils.consume(entity);

        } finally {
            httpclient.getConnectionManager().shutdown();
        }
    }

    private  HttpClient getHttpClient() {

        Credentials use_jaas_creds = new Credentials() {
            public String getPassword() {
                return null;
            }

            public Principal getUserPrincipal() {
                return null;
            }
        };

        CredentialsProvider credsProvider = new BasicCredentialsProvider();
        credsProvider.setCredentials(new AuthScope(null, -1, null), use_jaas_creds);
        Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider>create().register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory(true)).build();
        CloseableHttpClient httpclient = HttpClients.custom().setDefaultAuthSchemeRegistry(authSchemeRegistry).setDefaultCredentialsProvider(credsProvider).build();

        return httpclient;
    }

    class KerberosCallBackHandler implements CallbackHandler {

        private final String user;
        private final String password;

        public KerberosCallBackHandler(String user, String password) {
            this.user = user;
            this.password = password;
        }

        public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {

            for (Callback callback : callbacks) {

                if (callback instanceof NameCallback) {
                    NameCallback nc = (NameCallback) callback;
                    nc.setName(user);
                } else if (callback instanceof PasswordCallback) {
                    PasswordCallback pc = (PasswordCallback) callback;
                    pc.setPassword(password.toCharArray());
                } else {
                    throw new UnsupportedCallbackException(callback, "Unknown Callback");
                }

            }
        }
    }

}

注意：

你可以使用：

System.setProperty("sun.security.krb5.debug", "true");

或：

-Dsun.security.krb5.debug=true

调查问题。

HttpClient为Kerberos身份验证设置凭据

1 个答案: