KeyExchangeEvent.cpp

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/*
 * KeyExchangeEvent.cpp
 *
 * Copyright (C) 2014 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *             Thomas Schrader <schrader.thomas@gmail.com>
 *
 * 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.
 *
 */

#include "security/exchange/KeyExchangeEvent.h"
#include "core/EventDispatcher.h"

#include <sstream>

namespace dtn
{
        namespace security
        {
                KeyExchangeEvent::KeyExchangeEvent(const dtn::data::EID &eid, const dtn::security::KeyExchangeData &data)
                 : _eid(eid), _data(data)
                {
                        switch (_data.getAction())
                        {
                        case dtn::security::KeyExchangeData::START:
                        case dtn::security::KeyExchangeData::REQUEST:
                        case dtn::security::KeyExchangeData::RESPONSE:
                                setLoggable(false);
                                break;

                        default:
                                break;
                        }
                }

                KeyExchangeEvent::~KeyExchangeEvent()
                {}

                const dtn::data::EID& KeyExchangeEvent::getEID() const
                {
                        return _eid;
                }

                const dtn::security::KeyExchangeData& KeyExchangeEvent::getData() const
                {
                        return _data;
                }

                const std::string KeyExchangeEvent::getName() const
                {
                        return KeyExchangeEvent::className;
                }

                std::string KeyExchangeEvent::getMessage() const
                {
                        switch (_data.getAction())
                        {
                                case dtn::security::KeyExchangeData::PASSWORD_REQUEST:
                                        return "Please enter the password for " + _eid.getString() + " (" + _data.toString() + ")";

                                case dtn::security::KeyExchangeData::HASH_COMMIT:
                                        return "Please compare the hash values for " + _eid.getString() + " (" + _data.toString() + "): " + _data.str();

                                case dtn::security::KeyExchangeData::NEWKEY_FOUND:
                                        return "A new key was found. Please select a key for " + _eid.getString() + " (" + _data.toString() + ")";

                                case dtn::security::KeyExchangeData::COMPLETE:
                                        return "Key-exchange completed for " + _eid.getString() + " (" + _data.toString() + ")";

                                case dtn::security::KeyExchangeData::ERROR:
                                        return "Key-exchange failed for " + _eid.getString() + " (" + _data.toString() + ")";

                                case dtn::security::KeyExchangeData::WRONG_PASSWORD:
                                        return "Entered password does not match the peer; Session " + _eid.getString() + " (" + _data.toString() + ")";

                                default: {
                                        std::stringstream sstm;
                                        sstm << "Unknown event for " << _eid.getString() << " (" << _data.toString() + ")";
                                        return sstm.str();
                                }
                        }
                }

                void KeyExchangeEvent::raise(const dtn::data::EID &eid, const dtn::security::KeyExchangeData &data)
                {
                        // raise the new event
                        dtn::core::EventDispatcher<KeyExchangeEvent>::queue( new KeyExchangeEvent(eid.getNode(), data) );
                }

                const string KeyExchangeEvent::className = "KeyExchangeEvent";
        } /* namespace security */
} /* namespace dtn */