EMailSmtpService.h

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/*
 * EMailSmtpService.h
 *
 * Copyright (C) 2013 IBR, TU Braunschweig
 *
 * Written-by: Björn Gernert <mail@bjoern-gernert.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 EMAILSMTPSERVICE_H_
#define EMAILSMTPSERVICE_H_

#include "Configuration.h"
#include "core/Node.h"
#include "net/BundleTransfer.h"
#include "storage/BundleStorage.h"
#include "ibrdtn/data/BundleID.h"

#include <ibrcommon/thread/Thread.h>
#include <ibrcommon/thread/Queue.h>
#include <vmime/vmime.hpp>

namespace dtn
{
        namespace net
        {
                class EMailSmtpService : public ibrcommon::JoinableThread
                {
                public:
                        class Task {
                        public:
                                Task(const dtn::core::Node &node,
                                                const dtn::net::BundleTransfer &job,
                                                std::string recipient);

                                virtual ~Task();

                                const dtn::core::Node getNode();

                                const dtn::net::BundleTransfer getJob();

                                std::string getRecipient();

                                bool checkForReturningMail();

                        private:

                                const dtn::core::Node& _node;

                                const dtn::net::BundleTransfer _job;

                                std::string _recipient;

                                size_t _timesChecked;
                        };

                        static EMailSmtpService& getInstance();

                        void queueTask(Task *t);

                        void submitNow(Task *t);

                        void submitQueue();

                        void run() throw ();

                        void __cancellation() throw ();

                private:
                        class TimeoutHandler : public vmime::net::timeoutHandler
                        {
                                public:
                                        bool isTimeOut();
                                        void resetTimeOut();
                                        bool handleTimeOut();
                                private:
                                        unsigned int getTime()
                                        {
                                                return vmime::platform::getHandler()->getUnixTime();
                                        }
                                        unsigned int last;
                        };

                        class TimeoutHandlerFactory : public vmime::net::timeoutHandlerFactory
                        {
                        public:
                                vmime::ref<vmime::net::timeoutHandler> create()
                                {
                                        return vmime::create<TimeoutHandler>();
                                }
                        };

                        EMailSmtpService();

                        virtual ~EMailSmtpService();

                        const dtn::daemon::Configuration::EMail& _config;

                        dtn::storage::BundleStorage& _storage;

                        vmime::ref<vmime::security::cert::defaultCertificateVerifier> _certificateVerifier;

                        vmime::ref<vmime::net::transport> _transport;

                        ibrcommon::Queue<Task*> _queue;

                        ibrcommon::Mutex _threadMutex;

                        static bool _run;

                        void loadCerificates();

                        vmime::ref<vmime::security::cert::X509Certificate> loadCertificateFromFile(const std::string &path);

                        void submit(Task *t);

                        void connect();

                        void disconnect();

                        bool isConnected();

                        unsigned int getProcFlags(const dtn::data::Block &block);

                        std::string toString(int i);

                        class InvalidCertificate : public ibrcommon::Exception {
                        public:
                                InvalidCertificate() {}
                                InvalidCertificate(std::string msg) : Exception(msg) {}
                        };

                };
        }
}

#endif /* EMAILSMTPSERVICE_H_ */