mirror of https://github.com/aria2/aria2
142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "BtPortMessage.h"
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#include "bittorrent_helper.h"
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#include "DlAbortEx.h"
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#include "util.h"
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#include "message.h"
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#include "Logger.h"
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#include "LogFactory.h"
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#include "Peer.h"
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#include "DHTNode.h"
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#include "DHTRoutingTable.h"
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#include "DHTTaskQueue.h"
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#include "DHTTaskFactory.h"
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#include "DHTTask.h"
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#include "fmt.h"
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#include "a2functional.h"
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namespace aria2 {
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const char BtPortMessage::NAME[] = "port";
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BtPortMessage::BtPortMessage(uint16_t port)
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: SimpleBtMessage(ID, NAME),
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port_(port),
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localNode_(nullptr),
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routingTable_(nullptr),
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taskQueue_(nullptr),
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taskFactory_(nullptr)
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{
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}
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std::unique_ptr<BtPortMessage> BtPortMessage::create(const unsigned char* data,
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size_t dataLength)
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{
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bittorrent::assertPayloadLengthEqual(3, dataLength, NAME);
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bittorrent::assertID(ID, data, NAME);
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uint16_t port = bittorrent::getShortIntParam(data, 1);
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return make_unique<BtPortMessage>(port);
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}
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void BtPortMessage::doReceivedAction()
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{
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if (taskFactory_ && taskQueue_) {
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if (port_ == 0) {
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A2_LOG_DEBUG("Ignored port 0.");
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return;
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}
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// node id is random at this point. When ping reply received, new DHTNode
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// instance created with proper node ID and is added to a routing table.
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auto node = std::make_shared<DHTNode>();
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node->setIPAddress(getPeer()->getIPAddress());
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node->setPort(port_);
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{
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std::shared_ptr<DHTTask> task = taskFactory_->createPingTask(node);
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taskQueue_->addImmediateTask(task);
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}
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if (routingTable_->getNumBucket() == 1) {
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// initiate bootstrap
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A2_LOG_INFO("Dispatch node_lookup since too few buckets.");
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taskQueue_->addImmediateTask(
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taskFactory_->createNodeLookupTask(localNode_->getID()));
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}
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}
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else {
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A2_LOG_INFO(
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"DHT port message received while localhost didn't declare support it.");
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}
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}
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unsigned char* BtPortMessage::createMessage()
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{
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/**
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* len --- 5, 4bytes
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* id --- 4, 1byte
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* port --- port number, 2bytes
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* total: 7bytes
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*/
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auto msg = new unsigned char[MESSAGE_LENGTH];
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bittorrent::createPeerMessageString(msg, MESSAGE_LENGTH, 3, ID);
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bittorrent::setShortIntParam(&msg[5], port_);
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return msg;
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}
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size_t BtPortMessage::getMessageLength() { return MESSAGE_LENGTH; }
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std::string BtPortMessage::toString() const
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{
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return fmt("%s port=%u", NAME, port_);
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}
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void BtPortMessage::setLocalNode(DHTNode* localNode) { localNode_ = localNode; }
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void BtPortMessage::setRoutingTable(DHTRoutingTable* routingTable)
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{
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routingTable_ = routingTable;
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}
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void BtPortMessage::setTaskQueue(DHTTaskQueue* taskQueue)
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{
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taskQueue_ = taskQueue;
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}
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void BtPortMessage::setTaskFactory(DHTTaskFactory* taskFactory)
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{
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taskFactory_ = taskFactory;
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}
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} // namespace aria2
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