improve authentication system

scm-web-api/src/main/java/sonia/scm/web/security/AuthenticationManager.java

@@ -29,12 +29,13 @@
  *
  */
 
+
+
 package sonia.scm.web.security;
 
 //~--- non-JDK imports --------------------------------------------------------
 
 import sonia.scm.Initable;
-import sonia.scm.user.User;
 
 //~--- JDK imports ------------------------------------------------------------
 
@@ -47,7 +48,7 @@ import javax.servlet.http.HttpServletResponse;
  *
  * @author Sebastian Sdorra
  */
-public interface Authenticator extends Initable, Closeable
+public interface AuthenticationManager extends Initable, Closeable
 {
 
   /**
@@ -61,7 +62,6 @@ public interface Authenticator extends Initable, Closeable
    *
    * @return
    */
-  public User authenticate(HttpServletRequest request,
+  public AuthenticationResult authenticate(HttpServletRequest request,
-                           HttpServletResponse response, String username,
+          HttpServletResponse response, String username, String password);
-                           String password);
 }

scm-web-api/src/main/java/sonia/scm/web/security/AuthenticationResult.java

@@ -0,0 +1,137 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.web.security;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.user.User;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class AuthenticationResult
+{
+
+  /** Field description */
+  public static final AuthenticationResult NEXT =
+    new AuthenticationResult(AuthenticationState.NEXT);
+
+  /** Field description */
+  public static final AuthenticationResult FAILED =
+    new AuthenticationResult(AuthenticationState.FAILED);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param state
+   */
+  public AuthenticationResult(AuthenticationState state)
+  {
+    this.state = state;
+  }
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param user
+   * @param state
+   */
+  public AuthenticationResult(User user, AuthenticationState state)
+  {
+    this.user = user;
+    this.state = state;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  @Override
+  public String toString()
+  {
+    StringBuilder out = new StringBuilder("user: ");
+
+    if (user != null)
+    {
+      out.append(user.getName());
+    }
+    else
+    {
+      out.append("null");
+    }
+
+    return out.append(", state: ").append(state.toString()).toString();
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public AuthenticationState getState()
+  {
+    return state;
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public User getUser()
+  {
+    return user;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private AuthenticationState state;
+
+  /** Field description */
+  private User user;
+}

scm-web-api/src/main/java/sonia/scm/web/security/AuthenticationState.java

@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.web.security;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public enum AuthenticationState
+{
+  CREATE_USER(true), MODIFY_USER(true), SUCCESS(true), NEXT(false),
+  FAILED(false);
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param successfully
+   */
+  private AuthenticationState(boolean successfully)
+  {
+    this.successfully = successfully;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public boolean isSuccessfully()
+  {
+    return successfully;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private boolean successfully = false;
+}

scm-web-api/src/main/java/sonia/scm/web/security/BasicSecurityContext.java

@@ -29,6 +29,8 @@
  *
  */
 
+
+
 package sonia.scm.web.security;
 
 //~--- non-JDK imports --------------------------------------------------------
@@ -36,7 +38,11 @@ package sonia.scm.web.security;
 import com.google.inject.Inject;
 import com.google.inject.servlet.SessionScoped;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import sonia.scm.user.User;
+import sonia.scm.user.UserManager;
 
 //~--- JDK imports ------------------------------------------------------------
 
@@ -51,6 +57,29 @@ import javax.servlet.http.HttpServletResponse;
 public class BasicSecurityContext implements WebSecurityContext
 {
 
+  /** the logger for BasicSecurityContext */
+  private static final Logger logger =
+    LoggerFactory.getLogger(BasicSecurityContext.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param authenticator
+   * @param userManager
+   */
+  @Inject
+  public BasicSecurityContext(AuthenticationManager authenticator,
+                              UserManager userManager)
+  {
+    this.authenticator = authenticator;
+    this.userManager = userManager;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
   /**
    * Method description
    *
@@ -67,7 +96,31 @@ public class BasicSecurityContext implements WebSecurityContext
                            HttpServletResponse response, String username,
                            String password)
   {
-    user = authenticator.authenticate(request, response, username, password);
+    AuthenticationResult result = authenticator.authenticate(request, response,
+                                    username, password);
+
+    if (result.getState().isSuccessfully())
+    {
+      user = result.getUser();
+
+      try
+      {
+        switch (result.getState())
+        {
+          case CREATE_USER :
+            userManager.create(user);
+
+            break;
+
+          case MODIFY_USER :
+            userManager.modify(user);
+        }
+      }
+      catch (Exception ex)
+      {
+        logger.error(ex.getMessage(), ex);
+      }
+    }
 
     return user;
   }
@@ -114,9 +167,11 @@ public class BasicSecurityContext implements WebSecurityContext
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */
-  @Inject
+  private AuthenticationManager authenticator;
-  private Authenticator authenticator;
 
   /** Field description */
   private User user;
+
+  /** Field description */
+  private UserManager userManager;
 }

scm-web-api/src/main/java/sonia/scm/web/security/ChainAuthenticatonManager.java

@@ -42,31 +42,44 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import sonia.scm.SCMContextProvider;
-import sonia.scm.security.EncryptionHandler;
+import sonia.scm.util.AssertUtil;
-import sonia.scm.user.User;
+import sonia.scm.util.IOUtil;
 
 //~--- JDK imports ------------------------------------------------------------
 
 import java.io.IOException;
 
+import java.util.Set;
+
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import sonia.scm.user.UserManager;
 
 /**
  *
  * @author Sebastian Sdorra
  */
 @Singleton
-public class XmlAuthenticator implements Authenticator
+public class ChainAuthenticatonManager implements AuthenticationManager
 {
 
-  /** Field description */
+  /** the logger for ChainAuthenticatonManager */
-  public static final String NAME_DIRECTORY = "users";
-
-  /** the logger for XmlAuthenticator */
   private static final Logger logger =
-    LoggerFactory.getLogger(XmlAuthenticator.class);
+    LoggerFactory.getLogger(ChainAuthenticatonManager.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param authenticatorSet
+   */
+  @Inject
+  public ChainAuthenticatonManager(Set<AuthenticationManager> authenticatorSet)
+  {
+    AssertUtil.assertIsNotEmpty(authenticatorSet);
+    this.authenticatorSet = authenticatorSet;
+  }
 
   //~--- methods --------------------------------------------------------------
 
@@ -82,41 +95,37 @@ public class XmlAuthenticator implements Authenticator
    * @return
    */
   @Override
-  public User authenticate(HttpServletRequest request,
+  public AuthenticationResult authenticate(HttpServletRequest request,
-                           HttpServletResponse response, String username,
+          HttpServletResponse response, String username, String password)
-                           String password)
   {
-    User user = userManager.get(username);
+    AuthenticationResult result = null;
 
-    if (user != null)
+    for (AuthenticationManager authenticator : authenticatorSet)
     {
-      String encryptedPassword = encryptionHandler.encrypt(password);
+      try
-
-      if (!encryptedPassword.equalsIgnoreCase(user.getPassword()))
       {
-        user = null;
+        result = authenticator.authenticate(request, response, username,
+                password);
 
         if (logger.isDebugEnabled())
         {
-          logger.debug("password for user {} is wrong", username);
+          logger.debug("authenticator {} ends with result, {}",
-        }
+                       authenticator.getClass().getName(), result);
-      }
-      else
-      {
-        if (logger.isDebugEnabled())
-        {
-          logger.debug("user {} logged in successfully", username);
         }
 
-        user.setPassword(null);
+        if (((result != null) && result.getState().isSuccessfully())
-      }
+            || (result.getState() == AuthenticationState.FAILED))
-    }
-    else if (logger.isDebugEnabled())
         {
-      logger.debug("could not find user {}", username);
+          break;
+        }
+      }
+      catch (Exception ex)
+      {
+        logger.error(ex.getMessage(), ex);
+      }
     }
 
-    return user;
+    return result;
   }
 
   /**
@@ -128,30 +137,29 @@ public class XmlAuthenticator implements Authenticator
   @Override
   public void close() throws IOException
   {
-
+    for (AuthenticationManager authenticator : authenticatorSet)
-    // do nothing
+    {
+      IOUtil.close(authenticator);
+    }
   }
 
   /**
    * Method description
    *
    *
-   * @param provider
+   * @param context
    */
   @Override
-  public void init(SCMContextProvider provider)
+  public void init(SCMContextProvider context)
   {
-
+    for (AuthenticationManager authenticator : authenticatorSet)
-    // do nothing
+    {
+      authenticator.init(context);
+    }
   }
 
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */
-  @Inject
+  private Set<AuthenticationManager> authenticatorSet;
-  private EncryptionHandler encryptionHandler;
-
-  /** Field description */
-  @Inject
-  private UserManager userManager;
 }

scm-web-api/src/main/java/sonia/scm/web/security/XmlAuthenticationManager.java

@@ -0,0 +1,214 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.web.security;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.SCMContextProvider;
+import sonia.scm.security.EncryptionHandler;
+import sonia.scm.user.User;
+import sonia.scm.user.UserManager;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.IOException;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+@Singleton
+public class XmlAuthenticationManager implements AuthenticationManager
+{
+
+  /** Field description */
+  public static final String NAME_DIRECTORY = "users";
+
+  /** Field description */
+  public static final String TYPE = "xml";
+
+  /** the logger for XmlAuthenticationManager */
+  private static final Logger logger =
+    LoggerFactory.getLogger(XmlAuthenticationManager.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param userManager
+   * @param encryptionHandler
+   */
+  @Inject
+  public XmlAuthenticationManager(UserManager userManager,
+                                  EncryptionHandler encryptionHandler)
+  {
+    this.userManager = userManager;
+    this.encryptionHandler = encryptionHandler;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param request
+   * @param response
+   * @param username
+   * @param password
+   *
+   * @return
+   */
+  @Override
+  public AuthenticationResult authenticate(HttpServletRequest request,
+          HttpServletResponse response, String username, String password)
+  {
+    AuthenticationResult result = null;
+    User user = userManager.get(username);
+
+    if (user != null)
+    {
+      if (TYPE.equals(user.getType()))
+      {
+        result = authenticate(user, username, password);
+      }
+      else
+      {
+        if (logger.isDebugEnabled())
+        {
+          logger.debug("{} is not an xml user", username);
+        }
+
+        result = AuthenticationResult.NEXT;
+      }
+    }
+    else
+    {
+      if (logger.isDebugEnabled())
+      {
+        logger.debug("could not find user {}", username);
+      }
+
+      result = AuthenticationResult.NEXT;
+    }
+
+    return result;
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @throws IOException
+   */
+  @Override
+  public void close() throws IOException
+  {
+
+    // do nothing
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param provider
+   */
+  @Override
+  public void init(SCMContextProvider provider)
+  {
+
+    // do nothing
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param user
+   * @param username
+   * @param password
+   *
+   * @return
+   */
+  private AuthenticationResult authenticate(User user, String username,
+          String password)
+  {
+    AuthenticationResult result = null;
+    String encryptedPassword = encryptionHandler.encrypt(password);
+
+    if (!encryptedPassword.equalsIgnoreCase(user.getPassword()))
+    {
+      user = null;
+
+      if (logger.isDebugEnabled())
+      {
+        logger.debug("password for user {} is wrong", username);
+      }
+
+      result = AuthenticationResult.FAILED;
+    }
+    else
+    {
+      if (logger.isDebugEnabled())
+      {
+        logger.debug("user {} logged in successfully", username);
+      }
+
+      user.setPassword(null);
+      result = new AuthenticationResult(user, AuthenticationState.SUCCESS);
+    }
+
+    return result;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private EncryptionHandler encryptionHandler;
+
+  /** Field description */
+  private UserManager userManager;
+}

scm-webapp/src/main/java/sonia/scm/BindingExtensionProcessor.java

@@ -46,7 +46,8 @@ import sonia.scm.plugin.ext.Extension;
 import sonia.scm.plugin.ext.ExtensionProcessor;
 import sonia.scm.repository.RepositoryHandler;
 import sonia.scm.security.EncryptionHandler;
-import sonia.scm.web.security.Authenticator;
+import sonia.scm.web.security.AuthenticationManager;
+import sonia.scm.web.security.XmlAuthenticationManager;
 
 //~--- JDK imports ------------------------------------------------------------
 
@@ -90,6 +91,10 @@ public class BindingExtensionProcessor implements ExtensionProcessor
   {
     Multibinder<RepositoryHandler> repositoryHandlers =
       Multibinder.newSetBinder(binder, RepositoryHandler.class);
+    Multibinder<AuthenticationManager> authenticators =
+      Multibinder.newSetBinder(binder, AuthenticationManager.class);
+
+    authenticators.addBinding().to(XmlAuthenticationManager.class);
 
     for (Class extensionClass : extensions)
     {
@@ -103,17 +108,21 @@ public class BindingExtensionProcessor implements ExtensionProcessor
           }
 
           binder.bind(extensionClass);
-
           repositoryHandlers.addBinding().to(extensionClass);
-
         }
         else if (EncryptionHandler.class.isAssignableFrom(extensionClass))
         {
           bind(binder, EncryptionHandler.class, extensionClass);
         }
-        else if (Authenticator.class.isAssignableFrom(extensionClass))
+        else if (AuthenticationManager.class.isAssignableFrom(extensionClass))
         {
-          bind(binder, Authenticator.class, extensionClass);
+          if (logger.isInfoEnabled())
+          {
+            logger.info("bind Authenticator {}", extensionClass.getName());
+          }
+
+          binder.bind(extensionClass);
+          authenticators.addBinding().to(extensionClass);
         }
         else
         {

scm-webapp/src/main/java/sonia/scm/ContextListener.java

@@ -44,13 +44,16 @@ import sonia.scm.plugin.DefaultPluginManager;
 import sonia.scm.plugin.PluginManager;
 import sonia.scm.repository.RepositoryManager;
 import sonia.scm.user.UserManager;
-import sonia.scm.web.security.Authenticator;
+import sonia.scm.util.IOUtil;
+import sonia.scm.web.security.AuthenticationManager;
 
 //~--- JDK imports ------------------------------------------------------------
 
 import java.util.ArrayList;
 import java.util.List;
 
+import javax.servlet.ServletContextEvent;
+
 /**
  *
  * @author Sebastian Sdorra
@@ -58,6 +61,33 @@ import java.util.List;
 public class ContextListener extends GuiceServletContextListener
 {
 
+  /**
+   * Method description
+   *
+   *
+   * @param servletContextEvent
+   */
+  @Override
+  public void contextDestroyed(ServletContextEvent servletContextEvent)
+  {
+    if (injector != null)
+    {
+
+      // close RepositoryManager
+      IOUtil.close(injector.getInstance(RepositoryManager.class));
+
+      // close Authenticator
+      IOUtil.close(injector.getInstance(AuthenticationManager.class));
+
+      // close UserManager
+      IOUtil.close(injector.getInstance(UserManager.class));
+    }
+
+    super.contextDestroyed(servletContextEvent);
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
   /**
    * Method description
    *
@@ -78,8 +108,7 @@ public class ContextListener extends GuiceServletContextListener
       new ArrayList<Module>(bindExtProcessor.getModuleSet());
 
     moduleList.add(0, main);
-
+    injector = Guice.createInjector(moduleList);
-    Injector injector = Guice.createInjector(moduleList);
 
     // init RepositoryManager
     injector.getInstance(RepositoryManager.class).init(SCMContext.getContext());
@@ -88,8 +117,14 @@ public class ContextListener extends GuiceServletContextListener
     injector.getInstance(UserManager.class).init(SCMContext.getContext());
 
     // init Authenticator
-    injector.getInstance(Authenticator.class).init(SCMContext.getContext());
+    injector.getInstance(AuthenticationManager.class).init(
+        SCMContext.getContext());
 
     return injector;
   }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private Injector injector;
 }

scm-webapp/src/main/java/sonia/scm/ScmServletModule.java

@@ -56,10 +56,10 @@ import sonia.scm.security.SecurityContext;
 import sonia.scm.user.UserManager;
 import sonia.scm.user.xml.XmlUserManager;
 import sonia.scm.util.DebugServlet;
-import sonia.scm.web.security.Authenticator;
+import sonia.scm.web.security.AuthenticationManager;
 import sonia.scm.web.security.BasicSecurityContext;
+import sonia.scm.web.security.ChainAuthenticatonManager;
 import sonia.scm.web.security.WebSecurityContext;
-import sonia.scm.web.security.XmlAuthenticator;
 
 //~--- JDK imports ------------------------------------------------------------
 
@@ -155,10 +155,14 @@ public class ScmServletModule extends ServletModule
     bind(ScmConfiguration.class).toInstance(config);
     bind(PluginManager.class).toInstance(pluginManager);
     bind(EncryptionHandler.class).to(MessageDigestEncryptionHandler.class);
-    bind(Authenticator.class).to(XmlAuthenticator.class);
+    bindExtProcessor.bindExtensions(binder());
+
+    // bind security stuff
+    bind(AuthenticationManager.class).to(ChainAuthenticatonManager.class);
     bind(SecurityContext.class).to(BasicSecurityContext.class);
     bind(WebSecurityContext.class).to(BasicSecurityContext.class);
-    bindExtProcessor.bindExtensions(binder());
+
+    // bind security cache
     bind(CacheManager.class).to(EhCacheManager.class);
 
     // bind(RepositoryManager.class).annotatedWith(Undecorated.class).to(