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/*
* Copyright (c) 2011 Tobias Markmann
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include "PlatformNATTraversalWorker.h"
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <Swiften/Base/Log.h>
#include <Swiften/Network/NATTraversalGetPublicIPRequest.h>
#include <Swiften/Network/NATTraversalForwardPortRequest.h>
#include <Swiften/Network/NATTraversalRemovePortForwardingRequest.h>
#include <Swiften/Network/NATPMPInterface.h>
#include <Swiften/Network/MiniUPnPInterface.h>
namespace Swift {
class PlatformNATTraversalRequest : public boost::enable_shared_from_this<PlatformNATTraversalRequest> {
public:
typedef boost::shared_ptr<PlatformNATTraversalRequest> ref;
public:
PlatformNATTraversalRequest(PlatformNATTraversalWorker* worker) : worker(worker) {
}
virtual ~PlatformNATTraversalRequest() {
}
virtual void doRun() {
worker->addRequestToQueue(shared_from_this());
}
NATTraversalInterface* getNATTraversalInterface() const {
return worker->getNATTraversalInterface();
}
virtual void runBlocking() = 0;
private:
PlatformNATTraversalWorker* worker;
};
class PlatformNATTraversalGetPublicIPRequest : public NATTraversalGetPublicIPRequest, public PlatformNATTraversalRequest {
public:
PlatformNATTraversalGetPublicIPRequest(PlatformNATTraversalWorker* worker) : PlatformNATTraversalRequest(worker) {
}
virtual void run() {
doRun();
}
virtual void runBlocking() {
onResult(getNATTraversalInterface()->getPublicIP());
}
};
class PlatformNATTraversalForwardPortRequest : public NATTraversalForwardPortRequest, public PlatformNATTraversalRequest {
public:
PlatformNATTraversalForwardPortRequest(PlatformNATTraversalWorker* worker, unsigned int localIP, unsigned int publicIP) : PlatformNATTraversalRequest(worker), localIP(localIP), publicIP(publicIP) {
}
virtual void run() {
doRun();
}
virtual void runBlocking() {
onResult(getNATTraversalInterface()->addPortForward(localIP, publicIP));
}
private:
unsigned int localIP;
unsigned int publicIP;
};
class PlatformNATTraversalRemovePortForwardingRequest : public NATTraversalRemovePortForwardingRequest, public PlatformNATTraversalRequest {
public:
PlatformNATTraversalRemovePortForwardingRequest(PlatformNATTraversalWorker* worker, const NATPortMapping& mapping) : PlatformNATTraversalRequest(worker), mapping(mapping) {
}
virtual void run() {
doRun();
}
virtual void runBlocking() {
onResult(getNATTraversalInterface()->removePortForward(mapping));
}
private:
NATPortMapping mapping;
};
PlatformNATTraversalWorker::PlatformNATTraversalWorker(EventLoop* eventLoop) : eventLoop(eventLoop), stopRequested(false), natPMPSupported(boost::logic::indeterminate), natPMPInterface(NULL), miniUPnPSupported(boost::logic::indeterminate), miniUPnPInterface(NULL) {
nullNATTraversalInterface = new NullNATTraversalInterface();
thread = new boost::thread(boost::bind(&PlatformNATTraversalWorker::run, this));
}
PlatformNATTraversalWorker::~PlatformNATTraversalWorker() {
stopRequested = true;
addRequestToQueue(boost::shared_ptr<PlatformNATTraversalRequest>());
thread->join();
delete thread;
delete natPMPInterface;
delete miniUPnPInterface;
delete nullNATTraversalInterface;
}
NATTraversalInterface* PlatformNATTraversalWorker::getNATTraversalInterface() const {
if (boost::logic::indeterminate(miniUPnPSupported)) {
miniUPnPInterface = new MiniUPnPInterface();
miniUPnPSupported = miniUPnPInterface->isAvailable();
}
if (miniUPnPSupported) {
return miniUPnPInterface;
}
if (boost::logic::indeterminate(natPMPSupported)) {
natPMPInterface = new NATPMPInterface();
natPMPSupported = natPMPInterface->isAvailable();
}
if (natPMPSupported) {
return natPMPInterface;
}
return nullNATTraversalInterface;
}
boost::shared_ptr<NATTraversalGetPublicIPRequest> PlatformNATTraversalWorker::createGetPublicIPRequest() {
return boost::make_shared<PlatformNATTraversalGetPublicIPRequest>(this);
}
boost::shared_ptr<NATTraversalForwardPortRequest> PlatformNATTraversalWorker::createForwardPortRequest(int localPort, int publicPort) {
return boost::make_shared<PlatformNATTraversalForwardPortRequest>(this, localPort, publicPort);
}
boost::shared_ptr<NATTraversalRemovePortForwardingRequest> PlatformNATTraversalWorker::createRemovePortForwardingRequest(int localPort, int publicPort) {
NATPortMapping mapping(localPort, publicPort, NATPortMapping::TCP); // FIXME
return boost::make_shared<PlatformNATTraversalRemovePortForwardingRequest>(this, mapping);
}
void PlatformNATTraversalWorker::run() {
while (!stopRequested) {
PlatformNATTraversalRequest::ref request;
{
boost::unique_lock<boost::mutex> lock(queueMutex);
while (queue.empty()) {
queueNonEmpty.wait(lock);
}
request = queue.front();
queue.pop_front();
}
// Check whether we don't have a non-null request (used to stop the
// worker)
if (request) {
request->runBlocking();
}
}
}
void PlatformNATTraversalWorker::addRequestToQueue(PlatformNATTraversalRequest::ref request) {
{
boost::lock_guard<boost::mutex> lock(queueMutex);
queue.push_back(request);
}
queueNonEmpty.notify_one();
}
}
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