SecurityKeyManager.h

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/*
 * SecurityKeyManager.h
 *
 * Copyright (C) 2011 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef SECURITYKEYMANAGER_H_
#define SECURITYKEYMANAGER_H_

#include "Configuration.h"
#include <ibrdtn/security/SecurityKey.h>
#include <ibrdtn/data/EID.h>
#include <ibrdtn/data/BundleString.h>
#include <ibrdtn/data/SDNV.h>
#include <ibrcommon/data/File.h>
#include <iostream>

namespace dtn
{
        namespace security
        {
                class SecurityKeyManager : public dtn::daemon::Configuration::OnChangeListener
                {
                        static const std::string TAG;

                public:
                        class PathNotFoundException : public ibrcommon::Exception
                        {
                        public:
                                PathNotFoundException(std::string what = "No security path configured.") : ibrcommon::Exception(what)
                                {};

                                virtual ~PathNotFoundException() throw() {};
                        };

                        static SecurityKeyManager& getInstance();

                        virtual ~SecurityKeyManager();

                        virtual void onConfigurationChanged(const dtn::daemon::Configuration &conf) throw ();

                        bool hasKey(const dtn::data::EID &ref, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const;

                        dtn::security::SecurityKey get(const dtn::data::EID &ref, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const throw (SecurityKey::KeyNotFoundException);

                        dtn::security::SecurityKey get(const std::string &prefix, const dtn::data::EID &ref, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const throw (SecurityKey::KeyNotFoundException);

                        void store(const dtn::security::SecurityKey &key, const std::string &data);

                        void store(const std::string &prefix, const dtn::security::SecurityKey &key, const std::string &data);

                        void store(const dtn::security::SecurityKey &key);

                        const ibrcommon::File getKeyFile(const std::string &prefix, const dtn::data::EID &peer, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const;

                        const ibrcommon::File getKeyFile(const dtn::data::EID &peer, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const;

                        const ibrcommon::File getFilePath(const std::string &keyword, const std::string &extension) const;

                        void remove(const SecurityKey &key);

                private:
                        SecurityKeyManager();

                        static const std::string hash(const dtn::data::EID &eid);

                        static const std::string hash(const std::string &value);

                        void createRSA(const dtn::data::EID &ref, const int bits = 2048);

                        void load(dtn::security::SecurityKey &key) const;

                        ibrcommon::File _path;
                        ibrcommon::File _ca;
                        ibrcommon::File _key;
                };
        }
}

#endif /* SECURITYKEYMANAGER_H_ */