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diff --git a/src/modules/UserConfigBackendKrb5/UserConfigBackendKrb5.h b/src/modules/UserConfigBackendKrb5/UserConfigBackendKrb5.h
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+++ b/src/modules/UserConfigBackendKrb5/UserConfigBackendKrb5.h
@@ -0,0 +1,97 @@
+/*
+ * UserConfigBackendKrb5.h
+ *
+ * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MAD_MODULES_USERCONFIGBACKENDKRB5_USERCONFIGBACKENDKRB5_H_
+#define MAD_MODULES_USERCONFIGBACKENDKRB5_USERCONFIGBACKENDKRB5_H_
+
+#include <Common/UserConfigBackend.h>
+#include <Common/Application.h>
+
+#include <Core/Configurable.h>
+#include <Core/ConfigManager.h>
+
+#define USE_KADM5_API_VERSION 2
+#include <kadm5/admin.h>
+
+namespace Mad {
+namespace Modules {
+namespace UserConfigBackendKrb5 {
+
+class UserConfigBackendKrb5 : public Common::UserConfigBackend, private Core::Configurable, private boost::noncopyable {
+  private:
+    Common::Application *application;
+
+    std::string realm, principal, server;
+    std::string password, keytab;
+
+    krb5_context context;
+    void *handle;
+
+    bool connect();
+
+  protected:
+    virtual bool handleConfigEntry(const Core::ConfigEntry &entry, bool handled);
+
+    virtual void configFinished() {
+      connect();
+    }
+
+    virtual void checkUserInfo(const Common::UserInfo &userInfo) throw(Core::Exception);
+
+    virtual void addUser(const Common::UserInfo &userInfo) throw(Core::Exception);
+    virtual void updateUser(const Common::UserInfo &oldUserInfo, const Common::UserInfo &userInfo) throw(Core::Exception);
+    virtual void deleteUser(const Common::UserInfo &userInfo) throw(Core::Exception);
+
+  public:
+    UserConfigBackendKrb5(Common::Application *application0) : application(application0), handle(0) {
+      krb5_error_code err = krb5_init_context(&context);
+      if(err) {
+        context = 0;
+        return;
+      }
+
+      char *defaultRealm;
+
+      krb5_get_default_realm(context, &defaultRealm);
+      if(defaultRealm) {
+        realm = defaultRealm;
+        free(defaultRealm);
+      }
+
+      application->getConfigManager()->registerConfigurable(this);
+    }
+
+    virtual ~UserConfigBackendKrb5() {
+      if(!context)
+        return;
+
+      application->getConfigManager()->unregisterConfigurable(this);
+
+      if(handle)
+        kadm5_destroy(handle);
+
+      krb5_free_context(context);
+    }
+};
+
+}
+}
+}
+
+#endif /* MAD_MODULES_USERCONFIGBACKENDKRB5_USERCONFIGBACKENDKRB5_H_ */