Adds anonymous login strategy to XMPP provider.

src/net/java/sip/communicator/impl/protocol/jabber/AnonymousLoginStrategy.java

@@ -0,0 +1,84 @@
+/*
+ * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+package net.java.sip.communicator.impl.protocol.jabber;
+
+import net.java.sip.communicator.service.certificate.*;
+import net.java.sip.communicator.service.protocol.*;
+import org.jivesoftware.smack.*;
+
+import javax.net.ssl.*;
+import java.security.*;
+
+/**
+ * Implements anonymous login strategy for the purpose of some server side
+ * technologies. This makes not much sense to be used with Jitsi directly.
+ *
+ * @see JabberAccountIDImpl#ANONYMOUS_AUTH
+ *
+ * @author Pawel Domas
+ */
+public class AnonymousLoginStrategy
+    implements JabberLoginStrategy
+{
+    /**
+     * <tt>UserCredentials</tt> used by accompanying services.
+     */
+    private final UserCredentials credentials;
+
+    /**
+     * Creates new anonymous login strategy instance.
+     * @param login user login only for the purpose of returning
+     *              <tt>UserCredentials</tt> that are used by accompanying
+     *              services.
+     */
+    public AnonymousLoginStrategy(String login)
+    {
+        this.credentials = new UserCredentials();
+
+        credentials.setUserName(login);
+
+        //FIXME: consider including password for TURN authentication ?
+        credentials.setPassword(new char[]{});
+    }
+
+    @Override
+    public UserCredentials prepareLogin(SecurityAuthority authority,
+                                        int reasonCode)
+    {
+        return credentials;
+    }
+
+    @Override
+    public boolean loginPreparationSuccessful()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean login(XMPPConnection connection, String userName,
+                         String resource)
+        throws XMPPException
+    {
+        connection.loginAnonymously();
+
+        return true;
+    }
+
+    @Override
+    public boolean isTlsRequired()
+    {
+        return false;
+    }
+
+    @Override
+    public SSLContext createSslContext(CertificateService certificateService,
+                                       X509TrustManager trustManager)
+        throws GeneralSecurityException
+    {
+        return null;
+    }
+}

src/net/java/sip/communicator/impl/protocol/jabber/ProtocolProviderServiceJabberImpl.java

@@ -789,6 +789,12 @@ private void initializeConnectAndLogin(SecurityAuthority authority,
      */
     private JabberLoginStrategy createLoginStrategy()
     {
+        if (((JabberAccountIDImpl)getAccountID()).isAnonymousAuthUsed())
+        {
+            return new AnonymousLoginStrategy(
+                getAccountID().getAuthorizationName());
+        }
+
         String clientCertId = getAccountID().getAccountPropertyString(
                 ProtocolProviderFactory.CLIENT_TLS_CERTIFICATE);
         if(clientCertId != null)

src/net/java/sip/communicator/service/protocol/jabber/JabberAccountID.java

@@ -27,6 +27,11 @@ public class JabberAccountID
     private static final String JBR_DEFAULTS_PREFIX
             = AccountID.DEFAULTS_PREFIX +"jabber.";
 
+    /**
+     * Uses anonymous XMPP login if set to <tt>true</tt>.
+     */
+    public static final String ANONYMOUS_AUTH = "ANONYMOUS_AUTH";
+
     /**
      * Account suffix for Google service.
      */
@@ -142,6 +147,15 @@ public String getTelephonyDomainBypassCaps()
         return getAccountPropertyString(TELEPHONY_BYPASS_GTALK_CAPS);
     }
 
+    /**
+     * Indicates whether anonymous authorization method is used by this account.
+     * @return <tt>true</tt> if anonymous login is enabled on this account.
+     */
+    public boolean isAnonymousAuthUsed()
+    {
+        return getAccountPropertyBoolean(ANONYMOUS_AUTH, false);
+    }
+
     /**
      * Gets if Jingle is disabled for this account.
      *
@@ -188,6 +202,15 @@ public boolean isGoogleContactsEnabled()
         return getAccountPropertyBoolean(GOOGLE_CONTACTS_ENABLED, true);
     }
 
+    /**
+     * Enables anonymous authorization mode on this XMPP account.
+     * @param useAnonymousAuth <tt>true</tt> to use anonymous login.
+     */
+    public void setUseAnonymousAuth(boolean useAnonymousAuth)
+    {
+        putAccountProperty(ANONYMOUS_AUTH, useAnonymousAuth);
+    }
+
     /**
      * Sets the override value of the phone suffix.
      *