mirror of https://github.com/aria2/aria2
240 lines
7.4 KiB
C++
240 lines
7.4 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 "DHTEntryPointNameResolveCommand.h"
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#include "DownloadEngine.h"
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#ifdef ENABLE_ASYNC_DNS
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#include "AsyncNameResolver.h"
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#endif // ENABLE_ASYNC_DNS
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#include "NameResolver.h"
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#include "DlAbortEx.h"
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#include "prefs.h"
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#include "message.h"
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#include "util.h"
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#include "Option.h"
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#include "DHTNode.h"
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#include "DHTTaskQueue.h"
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#include "DHTTaskFactory.h"
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#include "DHTRoutingTable.h"
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#include "DHTTask.h"
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#include "RequestGroupMan.h"
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#include "Logger.h"
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#include "StringFormat.h"
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#include "FileEntry.h"
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#include "ServerStatMan.h"
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#include "FileAllocationEntry.h"
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#include "CheckIntegrityEntry.h"
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namespace aria2 {
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DHTEntryPointNameResolveCommand::DHTEntryPointNameResolveCommand
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(cuid_t cuid, DownloadEngine* e,
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const std::vector<std::pair<std::string, uint16_t> >& entryPoints):
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Command(cuid),
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e_(e),
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entryPoints_(entryPoints.begin(), entryPoints.end()),
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bootstrapEnabled_(false)
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{}
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DHTEntryPointNameResolveCommand::~DHTEntryPointNameResolveCommand()
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{
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#ifdef ENABLE_ASYNC_DNS
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disableNameResolverCheck(resolver_);
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#endif // ENABLE_ASYNC_DNS
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}
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bool DHTEntryPointNameResolveCommand::execute()
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{
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if(e_->getRequestGroupMan()->downloadFinished() || e_->isHaltRequested()) {
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return true;
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}
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#ifdef ENABLE_ASYNC_DNS
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if(resolver_.isNull()) {
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int family;
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if(e_->getOption()->getAsBool(PREF_ENABLE_ASYNC_DNS6)) {
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family = AF_UNSPEC;
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} else {
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family = AF_INET;
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}
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resolver_.reset(new AsyncNameResolver(family));
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}
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#endif // ENABLE_ASYNC_DNS
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try {
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#ifdef ENABLE_ASYNC_DNS
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if(e_->getOption()->getAsBool(PREF_ASYNC_DNS)) {
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while(!entryPoints_.empty()) {
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std::string hostname = entryPoints_.front().first;
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try {
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if(util::isNumericHost(hostname)) {
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std::pair<std::string, uint16_t> p
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(hostname, entryPoints_.front().second);
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resolvedEntryPoints_.push_back(p);
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addPingTask(p);
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} else if(resolveHostname(hostname, resolver_)) {
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hostname = resolver_->getResolvedAddresses().front();
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std::pair<std::string, uint16_t> p(hostname,
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entryPoints_.front().second);
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resolvedEntryPoints_.push_back(p);
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addPingTask(p);
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} else {
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e_->addCommand(this);
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return false;
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}
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} catch(RecoverableException& e) {
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getLogger()->error(EX_EXCEPTION_CAUGHT, e);
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}
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resolver_->reset();
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entryPoints_.pop_front();
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}
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} else
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#endif // ENABLE_ASYNC_DNS
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{
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NameResolver res;
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res.setSocktype(SOCK_DGRAM);
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while(!entryPoints_.empty()) {
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std::string hostname = entryPoints_.front().first;
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try {
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std::vector<std::string> addrs;
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res.resolve(addrs, hostname);
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std::pair<std::string, uint16_t> p(addrs.front(),
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entryPoints_.front().second);
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resolvedEntryPoints_.push_back(p);
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addPingTask(p);
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} catch(RecoverableException& e) {
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getLogger()->error(EX_EXCEPTION_CAUGHT, e);
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}
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entryPoints_.pop_front();
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}
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}
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if(bootstrapEnabled_ && resolvedEntryPoints_.size()) {
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taskQueue_->addPeriodicTask1(taskFactory_->createNodeLookupTask
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(localNode_->getID()));
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taskQueue_->addPeriodicTask1(taskFactory_->createBucketRefreshTask());
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}
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} catch(RecoverableException& e) {
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getLogger()->error(EX_EXCEPTION_CAUGHT, e);
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}
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return true;
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}
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void DHTEntryPointNameResolveCommand::addPingTask
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(const std::pair<std::string, uint16_t>& addr)
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{
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SharedHandle<DHTNode> entryNode(new DHTNode());
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entryNode->setIPAddress(addr.first);
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entryNode->setPort(addr.second);
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taskQueue_->addPeriodicTask1(taskFactory_->createPingTask(entryNode, 10));
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}
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#ifdef ENABLE_ASYNC_DNS
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bool DHTEntryPointNameResolveCommand::resolveHostname
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(const std::string& hostname,
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const SharedHandle<AsyncNameResolver>& resolver)
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{
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switch(resolver->getStatus()) {
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case AsyncNameResolver::STATUS_READY:
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if(getLogger()->info()) {
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getLogger()->info(MSG_RESOLVING_HOSTNAME,
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util::itos(getCuid()).c_str(), hostname.c_str());
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}
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resolver->resolve(hostname);
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setNameResolverCheck(resolver);
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return false;
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case AsyncNameResolver::STATUS_SUCCESS:
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if(getLogger()->info()) {
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getLogger()->info(MSG_NAME_RESOLUTION_COMPLETE,
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util::itos(getCuid()).c_str(),
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resolver->getHostname().c_str(),
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resolver->getResolvedAddresses().front().c_str());
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}
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return true;
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break;
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case AsyncNameResolver::STATUS_ERROR:
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throw DL_ABORT_EX
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(StringFormat(MSG_NAME_RESOLUTION_FAILED,
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util::itos(getCuid()).c_str(),
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hostname.c_str(),
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resolver->getError().c_str()).str());
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default:
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return false;
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}
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}
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void DHTEntryPointNameResolveCommand::setNameResolverCheck
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(const SharedHandle<AsyncNameResolver>& resolver)
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{
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e_->addNameResolverCheck(resolver, this);
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}
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void DHTEntryPointNameResolveCommand::disableNameResolverCheck
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(const SharedHandle<AsyncNameResolver>& resolver)
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{
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e_->deleteNameResolverCheck(resolver, this);
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}
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#endif // ENABLE_ASYNC_DNS
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void DHTEntryPointNameResolveCommand::setBootstrapEnabled(bool f)
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{
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bootstrapEnabled_ = f;
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}
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void DHTEntryPointNameResolveCommand::setTaskQueue
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(const SharedHandle<DHTTaskQueue>& taskQueue)
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{
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taskQueue_ = taskQueue;
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}
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void DHTEntryPointNameResolveCommand::setTaskFactory
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(const SharedHandle<DHTTaskFactory>& taskFactory)
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{
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taskFactory_ = taskFactory;
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}
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void DHTEntryPointNameResolveCommand::setRoutingTable
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(const SharedHandle<DHTRoutingTable>& routingTable)
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{
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routingTable_ = routingTable;
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}
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void DHTEntryPointNameResolveCommand::setLocalNode
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(const SharedHandle<DHTNode>& localNode)
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{
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localNode_ = localNode;
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}
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} // namespace aria2
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