XMPP与支持X-FACEBOOK-PLATFORM的Java Asmack库

我正在尝试使用Smack库在Android上进行Facebook聊天。 我已经阅读了Facebook上的聊天API ，但是我不明白我是如何使用这个库来validationFacebook的。

任何人都可以指出我如何做到这一点？

更新 ：根据no.good.at.coding答案，我有这个代码适应Asmack库。 所有工作正常，除了我作为回应login：未经授权。 这是我使用的代码：

public class SASLXFacebookPlatformMechanism extends SASLMechanism { private static final String NAME = "X-FACEBOOK-PLATFORM"; private String apiKey = ""; private String applicationSecret = ""; private String sessionKey = ""; /** * Constructor. */ public SASLXFacebookPlatformMechanism(SASLAuthentication saslAuthentication) { super(saslAuthentication); } @Override protected void authenticate() throws IOException, XMPPException { getSASLAuthentication().send(new AuthMechanism(NAME, "")); } @Override public void authenticate(String apiKeyAndSessionKey, String host, String applicationSecret) throws IOException, XMPPException { if (apiKeyAndSessionKey == null || applicationSecret == null) { throw new IllegalArgumentException("Invalid parameters"); } String[] keyArray = apiKeyAndSessionKey.split("\\|", 2); if (keyArray.length < 2) { throw new IllegalArgumentException( "API key or session key is not present"); } this.apiKey = keyArray[0]; Log.d("API_KEY", apiKey); this.applicationSecret = applicationSecret; Log.d("SECRET_KEY", applicationSecret); this.sessionKey = keyArray[1]; Log.d("SESSION_KEY", sessionKey); this.authenticationId = sessionKey; this.password = applicationSecret; this.hostname = host; String[] mechanisms = { "DIGEST-MD5" }; Map<String, String> props = new HashMap<String, String>(); this.sc = Sasl.createSaslClient(mechanisms, null, "xmpp", host, props, this); authenticate(); } @Override protected String getName() { return NAME; } @Override public void challengeReceived(String challenge) throws IOException { byte[] response = null; if (challenge != null) { String decodedChallenge = new String(Base64.decode(challenge)); Log.d("DECODED", decodedChallenge); Map<String, String> parameters = getQueryMap(decodedChallenge); String version = "1.0"; String nonce = parameters.get("nonce"); String method = parameters.get("method"); long callId = new GregorianCalendar().getTimeInMillis() / 1000L; String sig = "api_key=" + apiKey + "call_id=" + callId + "method=" + method + "nonce=" + nonce + "session_key=" + sessionKey + "v=" + version + applicationSecret; try { sig = md5(sig); sig = sig.toUpperCase(); } catch (NoSuchAlgorithmException e) { throw new IllegalStateException(e); } String composedResponse = "api_key=" + URLEncoder.encode(apiKey, "utf-8") + "&call_id=" + callId + "&method=" + URLEncoder.encode(method, "utf-8") + "&nonce=" + URLEncoder.encode(nonce, "utf-8") + "&session_key=" + URLEncoder.encode(sessionKey, "utf-8") + "&v=" + URLEncoder.encode(version, "utf-8") + "&sig=" + URLEncoder.encode(sig, "utf-8"); Log.d("COMPOSED", composedResponse); response = composedResponse.getBytes("utf-8"); } String authenticationText = ""; if (response != null) { authenticationText = Base64.encodeBytes(response, Base64.DONT_BREAK_LINES); } // Send the authentication to the server getSASLAuthentication().send(new Response(authenticationText)); } private Map<String, String> getQueryMap(String query) { Map<String, String> map = new HashMap<String, String>(); String[] params = query.split("\\&"); for (String param : params) { String[] fields = param.split("=", 2); map.put(fields[0], (fields.length > 1 ? fields[1] : null)); } return map; } private String md5(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(text.getBytes("utf-8"), 0, text.length()); return convertToHex(md.digest()); } private String convertToHex(byte[] data) { StringBuilder buf = new StringBuilder(); int len = data.length; for (int i = 0; i < len; i++) { int halfByte = (data[i] >>> 4) & 0xF; int twoHalfs = 0; do { if (0 <= halfByte && halfByte <= 9) { buf.append((char) ('0' + halfByte)); } else { buf.append((char) ('a' + halfByte - 10)); } halfByte = data[i] & 0xF; } while (twoHalfs++ < 1); } return buf.toString(); } } 

而这，就是与服务器之间的通信与发送和接收的消息：

 PM SENT (1132418216): <stream:stream to="chat.facebook.com" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" version="1.0"> PM RCV (1132418216): <?xml version="1.0"?><stream:stream id="C62D0F43" from="chat.facebook.com" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" version="1.0" xml:lang="en"><stream:features><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>DIGEST-MD5</mechanism></mechanisms></stream:features> PM SENT (1132418216): <auth mechanism="X-FACEBOOK-PLATFORM" xmlns="urn:ietf:params:xml:ns:xmpp-sasl"></auth> PM RCV (1132418216): <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">dmVyc2lvbj0xJm1ldGhvZD1hdXRoLnhtcHBfbG9naW4mbm9uY2U9NzFGNkQ3Rjc5QkIyREJCQ0YxQTkwMzA0QTg3OTlBMzM=</challenge> PM SENT (1132418216): <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">YXBpX2tleT0zMWYzYjg1ZjBjODYwNjQ3NThiZTZhOTQyNjVjZmNjMCZjYWxsX2lkPTEzMDA0NTYxMzUmbWV0aG9kPWF1dGgueG1wcF9sb2dpbiZub25jZT03MUY2RDdGNzlCQjJEQkJDRjFBOTAzMDRBODc5OUEzMyZzZXNzaW9uX2tleT0yNjUzMTg4ODNkYWJhOGRlOTRiYTk4ZDYtMTAwMDAwNTAyNjc2Nzc4JnY9MS4wJnNpZz04RkRDRjRGRTgzMENGOEQ3QjgwNjdERUQyOEE2RERFQw==</response> PM RCV (1132418216): <failure xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><not-authorized/></failure> 

正如开发人员Facebook论坛中所读到的，需要从应用程序的Facebook设置页面中禁用“禁用已弃用的身份validation方法”设置。 但是，即使这样做，我也无法login。 会话密钥是AAA | BBB | CCCforms的OAuth令牌的第二部分，我的意思是BBB。

Answer 1

最后，感谢no.good.at编码和harism的build议，我已经能够连接到Facebook聊天。 这个代码是Asmack库的机制（Android的Smack端口）。 对于Smack库来说，使用no.good.at.coding机制是必要的。

SASLXFacebookPlatformMechanism.java：

 import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.GregorianCalendar; import java.util.HashMap; import java.util.Map; import org.apache.harmony.javax.security.auth.callback.CallbackHandler; import org.apache.harmony.javax.security.sasl.Sasl; import org.jivesoftware.smack.SASLAuthentication; import org.jivesoftware.smack.XMPPException; import org.jivesoftware.smack.sasl.SASLMechanism; import org.jivesoftware.smack.util.Base64; public class SASLXFacebookPlatformMechanism extends SASLMechanism { private static final String NAME = "X-FACEBOOK-PLATFORM"; private String apiKey = ""; private String applicationSecret = ""; private String sessionKey = ""; /** * Constructor. */ public SASLXFacebookPlatformMechanism(SASLAuthentication saslAuthentication) { super(saslAuthentication); } @Override protected void authenticate() throws IOException, XMPPException { getSASLAuthentication().send(new AuthMechanism(NAME, "")); } @Override public void authenticate(String apiKeyAndSessionKey, String host, String applicationSecret) throws IOException, XMPPException { if (apiKeyAndSessionKey == null || applicationSecret == null) { throw new IllegalArgumentException("Invalid parameters"); } String[] keyArray = apiKeyAndSessionKey.split("\\|", 2); if (keyArray.length < 2) { throw new IllegalArgumentException( "API key or session key is not present"); } this.apiKey = keyArray[0]; this.applicationSecret = applicationSecret; this.sessionKey = keyArray[1]; this.authenticationId = sessionKey; this.password = applicationSecret; this.hostname = host; String[] mechanisms = { "DIGEST-MD5" }; Map<String, String> props = new HashMap<String, String>(); this.sc = Sasl.createSaslClient(mechanisms, null, "xmpp", host, props, this); authenticate(); } @Override public void authenticate(String username, String host, CallbackHandler cbh) throws IOException, XMPPException { String[] mechanisms = { "DIGEST-MD5" }; Map<String, String> props = new HashMap<String, String>(); this.sc = Sasl.createSaslClient(mechanisms, null, "xmpp", host, props, cbh); authenticate(); } @Override protected String getName() { return NAME; } @Override public void challengeReceived(String challenge) throws IOException { byte[] response = null; if (challenge != null) { String decodedChallenge = new String(Base64.decode(challenge)); Map<String, String> parameters = getQueryMap(decodedChallenge); String version = "1.0"; String nonce = parameters.get("nonce"); String method = parameters.get("method"); long callId = new GregorianCalendar().getTimeInMillis(); String sig = "api_key=" + apiKey + "call_id=" + callId + "method=" + method + "nonce=" + nonce + "session_key=" + sessionKey + "v=" + version + applicationSecret; try { sig = md5(sig); } catch (NoSuchAlgorithmException e) { throw new IllegalStateException(e); } String composedResponse = "api_key=" + URLEncoder.encode(apiKey, "utf-8") + "&call_id=" + callId + "&method=" + URLEncoder.encode(method, "utf-8") + "&nonce=" + URLEncoder.encode(nonce, "utf-8") + "&session_key=" + URLEncoder.encode(sessionKey, "utf-8") + "&v=" + URLEncoder.encode(version, "utf-8") + "&sig=" + URLEncoder.encode(sig, "utf-8"); response = composedResponse.getBytes("utf-8"); } String authenticationText = ""; if (response != null) { authenticationText = Base64.encodeBytes(response, Base64.DONT_BREAK_LINES); } // Send the authentication to the server getSASLAuthentication().send(new Response(authenticationText)); } private Map<String, String> getQueryMap(String query) { Map<String, String> map = new HashMap<String, String>(); String[] params = query.split("\\&"); for (String param : params) { String[] fields = param.split("=", 2); map.put(fields[0], (fields.length > 1 ? fields[1] : null)); } return map; } private String md5(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(text.getBytes("utf-8"), 0, text.length()); return convertToHex(md.digest()); } private String convertToHex(byte[] data) { StringBuilder buf = new StringBuilder(); int len = data.length; for (int i = 0; i < len; i++) { int halfByte = (data[i] >>> 4) & 0xF; int twoHalfs = 0; do { if (0 <= halfByte && halfByte <= 9) { buf.append((char) ('0' + halfByte)); } else { buf.append((char) ('a' + halfByte - 10)); } halfByte = data[i] & 0xF; } while (twoHalfs++ < 1); } return buf.toString(); } } 

要使用它：

 ConnectionConfiguration config = new ConnectionConfiguration("chat.facebook.com", 5222); config.setSASLAuthenticationEnabled(true); XMPPConnection xmpp = new XMPPConnection(config); try { SASLAuthentication.registerSASLMechanism("X-FACEBOOK-PLATFORM", SASLXFacebookPlatformMechanism.class); SASLAuthentication.supportSASLMechanism("X-FACEBOOK-PLATFORM", 0); xmpp.connect(); xmpp.login(apiKey + "|" + sessionKey, sessionSecret, "Application"); } catch (XMPPException e) { xmpp.disconnect(); e.printStackTrace(); } 

apiKey是在Facebook的应用程序设置页面中给出的API密钥。 sessionKey是访问令牌的第二部分。 如果令牌是这种forms，AAA | BBB | CCC，则BBB是会话密钥。 sessionSecret是使用旧的REST API和auth.promoteSession方法获得的。 要使用它，需要使一个Http到这个URL：

https://api.facebook.com/method/auth.promoteSession?access_token=yourAccessToken

尽pipeFacebook聊天文档说需要使用您的应用程序密钥，但只有当我使用返回REST方法的密钥时，才能使其工作。 要使该方法有效，您必须在应用程序设置中的“高级”选项卡上禁用“ 禁用已弃用的身份validation方法”选项。

Answer 2

我在6个月前用Smack（而不是asmack）使用了这个function，所以我不确定它现在会如何保持，但是在这里，希望它有帮助！

我在Ignite Realtime Smack论坛上find了Facebook的X-FACEBOOK-PLATFORMauthentication机制的实现，其中有人从fbgc项目中获得了它。 在链接到的答案中，您将findSASLXFacebookPlatformMechanism.java源代码。 你可以使用它如下：

 public void login() throws XMPPException { SASLAuthentication.registerSASLMechanism(SASLXFacebookPlatformMechanism.NAME, SASLXFacebookPlatformMechanism.class); SASLAuthentication.supportSASLMechanism(SASLXFacebookPlatformMechanism.NAME, 0); ConnectionConfiguration connConfig = new ConnectionConfiguration(host, port); XMPPConnection connection = new XMPPConnection(connConfig); connection.connect(); log.info("XMPP client connected"); connection.login(Utils.FB_APP_ID + "|" + this.user.sessionId, Utils.FB_APP_SECRET, "app_name"); log.info("XMPP client logged in"); } 

我在没有SDK的服务器上这样做。 我不记得细节（和Facebook的文档不是很好），但从我的代码可以告诉，获得用户授权应用程序后，我收到来自Facebook的callback请求与code参数。 我打开一个URLConnection https://graph.facebook.com/oauth/access_token?client_id=<app_id>&redirect_uri=http://myserver/context/path/&client_secret=<app_secret>&code=<code> 。 响应应该是访问令牌，其中会话ID是|之后的部分 – 某种forms的XXX|<sessionId> 。

Answer 3

这是我已经成功用于身份validation的代码。 也许这有助于即使这与Smack无关。 你可以从FB获得的访问令牌获得sessionKey，并获得sessionSecret我一直使用古老的REST API;

http://developers.facebook.com/docs/reference/rest/auth.promoteSession/

 private final void processChallenge(XmlPullParser parser, Writer writer, String sessionKey, String sessionSecret) throws IOException, NoSuchAlgorithmException, XmlPullParserException { parser.require(XmlPullParser.START_TAG, null, "challenge"); String challenge = new String(Base64.decode(parser.nextText(), Base64.DEFAULT)); String params[] = challenge.split("&"); HashMap<String, String> paramMap = new HashMap<String, String>(); for (int i = 0; i < params.length; ++i) { String p[] = params[i].split("="); p[0] = URLDecoder.decode(p[0]); p[1] = URLDecoder.decode(p[1]); paramMap.put(p[0], p[1]); } String api_key = "YOUR_API_KEY"; String call_id = "" + System.currentTimeMillis(); String method = paramMap.get("method"); String nonce = paramMap.get("nonce"); String v = "1.0"; StringBuffer sigBuffer = new StringBuffer(); sigBuffer.append("api_key=" + api_key); sigBuffer.append("call_id=" + call_id); sigBuffer.append("method=" + method); sigBuffer.append("nonce=" + nonce); sigBuffer.append("session_key=" + sessionKey); sigBuffer.append("v=" + v); sigBuffer.append(sessionSecret); MessageDigest md = MessageDigest.getInstance("MD5"); md.update(sigBuffer.toString().getBytes()); byte[] digest = md.digest(); StringBuffer sig = new StringBuffer(); for (int i = 0; i < digest.length; ++i) { sig.append(Integer.toHexString(0xFF & digest[i])); } StringBuffer response = new StringBuffer(); response.append("api_key=" + URLEncoder.encode(api_key)); response.append("&call_id=" + URLEncoder.encode(call_id)); response.append("&method=" + URLEncoder.encode(method)); response.append("&nonce=" + URLEncoder.encode(nonce)); response.append("&session_key=" + URLEncoder.encode(sessionKey)); response.append("&v=" + URLEncoder.encode(v)); response.append("&sig=" + URLEncoder.encode(sig.toString())); StringBuilder out = new StringBuilder(); out.append("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>"); out.append(Base64.encodeToString(response.toString().getBytes(), Base64.NO_WRAP)); out.append("</response>"); writer.write(out.toString()); writer.flush(); } 

Answer 4

我很抱歉作出新的答案，但我不得不包括新的代码@YShinkarev迟到抱歉
通过修改@Adrian答案，使challengereceived我们可以使用API​​Key和accessToken所有我修改的是composedResponse

 @Override public void challengeReceived(String challenge) throws IOException { byte[] response = null; if (challenge != null) { String decodedChallenge = new String(Base64.decode(challenge)); Map<String, String> parameters = getQueryMap(decodedChallenge); String version = "1.0"; String nonce = parameters.get("nonce"); String method = parameters.get("method"); long callId = new GregorianCalendar().getTimeInMillis(); String composedResponse = "api_key=" + URLEncoder.encode(apiKey, "utf-8") + "&call_id=" + callId + "&method=" + URLEncoder.encode(method, "utf-8") + "&nonce=" + URLEncoder.encode(nonce, "utf-8") + "&access_token=" + URLEncoder.encode(access_token, "utf-8") + "&v=" + URLEncoder.encode(version, "utf-8"); response = composedResponse.getBytes("utf-8"); } String authenticationText = ""; if (response != null) { authenticationText = Base64.encodeBytes(response, Base64.DONT_BREAK_LINES); } // Send the authentication to the server getSASLAuthentication().send(new Response(authenticationText)); } 

Answer 5

那你想做什么？

如果您只想在FB聊天上login，则可以像连接其他任何XMPP服务器一样连接到FB。

我会查看和使用来自Chat API的“使用用户名/密码进行身份validation”，这是由Smack支持的。 除非我想写一个FaceBook应用程序。 然后我会尝试login与“Facebook平台validation”。

所以，就像使用普通的Jabber客户端一样，使用Smack连接到FB聊天。

1. 对于用户名，请使用您的Facebook 用户名 。 （见http://www.facebook.com/username/ ）
2. 对于域名，使用： chat.facebook.com
3. 对于密码，请使用您的Facebook 密码
4. closures SSL和TSL
5. 将连接端口设置为： 5222 （这是XMPP的默认设置）
6. 将连接服务器设置为chat.facebook.com