使用 authToken 连接到 GTalk 服务器（XMPP、Smack）

Question

我正在编写一个连接到 XMPP 服务器的聊天应用程序，如果用户选择，我想让他们选择连接到他们的谷歌聊天帐户，而无需输入凭据......我使用了谷歌的 javascript api弹出谷歌登录表单，成功登录后将生成访问令牌。现在使用该访问令牌和用户电子邮件 ID，我想与 xmpp 服务器进行通信，以便用户可以与他们的 gtalk 朋友聊天。

我搜索了很多，但没有找到解决方案。无论我找到了所需的用户密码，但我想使用访问令牌。

SASLAuthentication.registerSASLMechanism("X-OAUTH2", GoogleConnectSASLMechanism.class);
SASLAuthentication.supportSASLMechanism("X-OAUTH2", 0);
config = new ConnectionConfiguration(server, 5222, 'gmail.com');
config.setSASLAuthenticationEnabled(true);
config.setSecurityMode(SecurityMode.enabled);
config.setReconnectionAllowed(true);

connection = new XMPPConnection(config);
connection.connect();

 connection.login(username, session_key, "Chat");
 setServer(SERVER_TYPE.GTALK);

GoogleConnectSASLMechanism.java 代码如下：-

    package org.jivesoftware.smack;

    import java.io.IOException;
    import java.net.URLEncoder;
    import java.io.UnsupportedEncodingException;
    import java.security.MessageDigest;
    import java.security.NoSuchAlgorithmException;
    import java.util.GregorianCalendar;
    import java.util.HashMap;
    import java.util.Map;

    import javax.security.auth.callback.CallbackHandler;
    import javax.security.sasl.Sasl;

    import org.jivesoftware.smack.SASLAuthentication;
    import org.jivesoftware.smack.XMPPException;
    import org.jivesoftware.smack.packet.Packet;
    import org.jivesoftware.smack.sasl.SASLMechanism;
    import org.jivesoftware.smack.util.Base64;


    public class GoogleConnectSASLMechanism extends SASLMechanism {
    public static final String NAME="X-OAUTH2";


    public GoogleConnectSASLMechanism(SASLAuthentication saslAuthentication) {
        super(saslAuthentication);
    }

    @Override
    protected String getName() {
        return NAME;
    }

    static void enable() { }

    @Override
    protected void authenticate() throws IOException, XMPPException
    {
        String authCode = password;
        String jidAndToken = "\0" + URLEncoder.encode( authenticationId, "utf-8" ) + "\0" + authCode;

        StringBuilder stanza = new StringBuilder();
        //stanza.append( "<auth mechanism=\"" ).append( getName() );
        //stanza.append( "\" xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">" );
       // stanza.append( new String(Base64.encode( jidAndToken.getBytes( "UTF-8" ), Base64.DEFAULT ) ) );
        stanza.append( "<auth xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\" mechanism=\"" ).append( getName() );
        stanza.append( "\" auth:service=\"oauth2\"" );
        stanza.append( "\" xmlns:auth=\"http://www.google.com/talk/protocol/auth\">" );
        stanza.append( "\" base64(\"\\0"+user_name+"\\0" + authCode+")" );



        stanza.append( "</auth>" );

        //Log.v("BlueTalk", "Authentication text is "+stanza);
        // Send the authentication to the server
        getSASLAuthentication().send( new Auth2Mechanism(stanza.toString()) );
    }

    public class Auth2Mechanism extends Packet {
        String stanza;
        public Auth2Mechanism(String txt) {
            stanza = txt;
        }
        public String toXML() {
            return stanza;
        }
    }


    /**
     * Initiating SASL authentication by select a mechanism.
     */
    public class AuthMechanism extends Packet {
        final private String name;
        final private String authenticationText;

        public AuthMechanism(String name, String authenticationText) {
            if (name == null) {
                throw new NullPointerException("SASL mechanism name shouldn't be null.");
            }
            this.name = name;
            this.authenticationText = authenticationText;
        }

        public String toXML() {
            StringBuilder stanza = new StringBuilder();
            stanza.append("<auth mechanism=\"").append(name);
            stanza.append("\" xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
            if (authenticationText != null &&
                    authenticationText.trim().length() > 0) {
                stanza.append(authenticationText);
            }
            stanza.append("</auth>");
            return stanza.toString();
        }
        }
    }

但是我从 connection.login() 得到一个“用户名或密码不正确”的异常

为此，我将获得使用 google 帐户的权限，获取令牌并使用令牌对 google talk（XMPP 服务器，使用 Smack）进行身份验证。

问题是……我该怎么做？我的意思是，如果我知道登录名和令牌，我该如何向 GTalk 服务器进行身份验证？

任何帮助将不胜感激...:)

Answer 1

维杰,

按如下方式更改您的身份验证功能：

protected void authenticate() throws IOException, XMPPException {
    final StringBuilder stanza = new StringBuilder();
    byte response[] = null;

    stanza.append("<auth xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"" +
            "mechanism=\"X-OAUTH2\"" +
            "auth:service=\"oauth2\"" +
            "xmlns:auth= \"http://www.google.com/talk/protocol/auth\">");

    String composedResponse =  "\0" + username + "\0" + sessionKey;
    response = composedResponse.getBytes("UTF-8");
    String authenticationText = "";
    if (response != null) {
        authenticationText = Base64.encodeBytes(response, Base64.DONT_BREAK_LINES);
    }

    stanza.append(authenticationText);
    stanza.append("</auth>");

    // Send the authentication to the server
    Packet p=new Packet() {
        @Override
        public String toXML() {
            return stanza.toString();
        }
    };
    getSASLAuthentication().send(p);
}

它与您原来的验证功能相同。我刚刚改变了节。