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/*
* Copyright (C) 2001-2012 Jacek Sieka, arnetheduck on gmail point com
* Copyright (C) 2019 Boris Pek <tehnick-8@yandex.ru>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "stdinc.h"
#include "ConnectivityManager.h"
#include "ClientManager.h"
#include "ConnectionManager.h"
#include "debug.h"
#include "format.h"
#include "LogManager.h"
#include "MappingManager.h"
#include "SearchManager.h"
#include "SettingsManager.h"
#include "version.h"
#ifdef WITH_DHT
#include "dht/DHT.h"
#endif
namespace dcpp {
ConnectivityManager::ConnectivityManager() :
autoDetected(false),
running(false)
{
updateLast();
}
void ConnectivityManager::startSocket() {
autoDetected = false;
disconnect();
if(ClientManager::getInstance()->isActive()) {
listen();
// must be done after listen calls; otherwise ports won't be set
if(SETTING(INCOMING_CONNECTIONS) == SettingsManager::INCOMING_FIREWALL_UPNP)
MappingManager::getInstance()->open();
}
updateLast();
}
void ConnectivityManager::detectConnection() {
if (running)
return;
running = true;
//fire(ConnectivityManagerListener::Started());
// restore connectivity settings to their default value.
SettingsManager::getInstance()->unset(SettingsManager::TCP_PORT);
SettingsManager::getInstance()->unset(SettingsManager::UDP_PORT);
SettingsManager::getInstance()->unset(SettingsManager::TLS_PORT);
SettingsManager::getInstance()->unset(SettingsManager::EXTERNAL_IP);
SettingsManager::getInstance()->unset(SettingsManager::NO_IP_OVERRIDE);
//SettingsManager::getInstance()->unset(SettingsManager::MAPPER);
SettingsManager::getInstance()->unset(SettingsManager::BIND_ADDRESS);
if (MappingManager::getInstance()->getOpened()) {
MappingManager::getInstance()->close();
}
disconnect();
log(_("Determining the best connectivity settings..."));
try {
listen();
} catch(const Exception& e) {
SettingsManager::getInstance()->set(SettingsManager::INCOMING_CONNECTIONS, SettingsManager::INCOMING_FIREWALL_PASSIVE);
log(str(F_("Unable to open %1% port(s); connectivity settings must be configured manually") % e.getError()));
fire(ConnectivityManagerListener::Finished());
running = false;
return;
}
autoDetected = true;
if (!Util::isPrivateIp(Util::getLocalIp(AF_INET))) {
SettingsManager::getInstance()->set(SettingsManager::INCOMING_CONNECTIONS, SettingsManager::INCOMING_DIRECT);
log(_("Public IP address detected, selecting active mode with direct connection"));
fire(ConnectivityManagerListener::Finished());
running = false;
return;
}
SettingsManager::getInstance()->set(SettingsManager::INCOMING_CONNECTIONS, SettingsManager::INCOMING_FIREWALL_UPNP);
log(_("Local network with possible NAT detected, trying to map the ports using UPnP..."));
if (!MappingManager::getInstance()->open()) {
running = false;
}
}
void ConnectivityManager::setup(bool settingsChanged) {
if(BOOLSETTING(AUTO_DETECT_CONNECTION)) {
if (!autoDetected) detectConnection();
} else {
if(autoDetected || (settingsChanged && (SearchManager::getInstance()->getPort() != Util::toString(SETTING(UDP_PORT)) || ConnectionManager::getInstance()->getPort() != Util::toString(SETTING(TCP_PORT)) || ConnectionManager::getInstance()->getSecurePort() != Util::toString(SETTING(TLS_PORT)) || SETTING(BIND_ADDRESS) != lastBind))) {
if(settingsChanged || SETTING(INCOMING_CONNECTIONS) != SettingsManager::INCOMING_FIREWALL_UPNP) {
MappingManager::getInstance()->close();
}
startSocket();
} else if(SETTING(INCOMING_CONNECTIONS) == SettingsManager::INCOMING_FIREWALL_UPNP && !MappingManager::getInstance()->getOpened()) {
// previous UPnP mappings had failed; try again
MappingManager::getInstance()->open();
}
}
}
void ConnectivityManager::mappingFinished(bool success) {
if(BOOLSETTING(AUTO_DETECT_CONNECTION)) {
if (!success) {
disconnect();
SettingsManager::getInstance()->set(SettingsManager::INCOMING_CONNECTIONS, SettingsManager::INCOMING_FIREWALL_PASSIVE);
log(_("Automatic setup of active mode has failed. You may want to set up your connection manually for better connectivity"));
}
fire(ConnectivityManagerListener::Finished());
}
running = false;
}
void ConnectivityManager::listen() {
try {
ConnectionManager::getInstance()->listen();
} catch(const Exception&) {
throw Exception(_("Transfer (TCP)"));
}
try {
SearchManager::getInstance()->listen();
} catch(const Exception&) {
throw Exception(_("Search (UDP)"));
}
#ifdef WITH_DHT
try {
dht::DHT::getInstance()->start();
} catch (const Exception&) {
throw Exception(_("DHT (UDP)"));
}
#endif
}
void ConnectivityManager::disconnect() {
SearchManager::getInstance()->disconnect();
ConnectionManager::getInstance()->disconnect();
#ifdef WITH_DHT
dht::DHT::getInstance()->stop();
#endif
}
void ConnectivityManager::log(const string& message) {
if(BOOLSETTING(AUTO_DETECT_CONNECTION)) {
LogManager::getInstance()->message(_("Connectivity: ") + message);
fire(ConnectivityManagerListener::Message(), message);
} else {
LogManager::getInstance()->message(message);
}
}
void ConnectivityManager::updateLast() {
lastBind = SETTING(BIND_ADDRESS);
}
} // namespace dcpp
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