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diff --git a/src/Common/AuthManager.h b/src/Common/AuthManager.h
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+/*
+ * AuthManager.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_COMMON_AUTHMANAGER_H_
+#define MAD_COMMON_AUTHMANAGER_H_
+
+#include "export.h"
+
+#include "AuthBackend.h"
+#include "AuthContext.h"
+
+#include <Core/Exception.h>
+
+#include <vector>
+
+#include <boost/cstdint.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+
+#include <boost/thread/shared_mutex.hpp>
+
+namespace Mad {
+namespace Common {
+
+class Application;
+
+class MAD_COMMON_EXPORT AuthManager : private boost::noncopyable {
+  private:
+    friend class Application;
+
+    class DenyBackend : public AuthBackend {
+      private:
+        const static std::vector<std::string> methods;
+
+      protected:
+        virtual const std::vector<std::string>& getMethods() const {
+          return methods;
+        }
+
+        virtual boost::shared_ptr<AuthContext> authenticate(const std::string& /*method*/, const std::string& /*user*/,
+            const std::vector<boost::uint8_t>& /*challenge*/, std::vector<boost::uint8_t>& /*response*/,
+            boost::shared_ptr<AuthContext> /*context*/) throw(Core::Exception) {
+          throw Core::Exception(Core::Exception::NOT_IMPLEMENTED);
+        }
+    };
+
+    boost::shared_ptr<DenyBackend> denyBackend;
+
+    boost::shared_ptr<AuthBackend> backend;
+
+    boost::shared_mutex mutex;
+
+    AuthManager() : denyBackend(new DenyBackend), backend(denyBackend) {}
+
+  public:
+    void registerBackend(boost::shared_ptr<AuthBackend> newBackend);
+    void unregisterBackend(boost::shared_ptr<AuthBackend> oldBackend);
+
+    std::vector<std::string> getMethods();
+
+    boost::shared_ptr<AuthContext> authenticate(const std::string &method, const std::string &user, const std::vector<boost::uint8_t> &challenge,
+        std::vector<boost::uint8_t> &response, boost::shared_ptr<AuthContext> context = boost::shared_ptr<AuthContext>()) throw(Core::Exception);
+};
+
+}
+}
+
+#endif /* MAD_COMMON_AUTHMANAGER_H_ */