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Fix up I2PTunnel UDP tunnels

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This commit is contained in:
Jeff Becker 2016-09-03 09:38:53 -04:00
parent 3ea624e1db
commit c65dc44f20
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GPG key ID: AB950234D6EA286B
4 changed files with 149 additions and 109 deletions
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84
I2PTunnel.cpp
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@ -532,7 +532,7 @@ namespace client
{
std::lock_guard<std::mutex> lock(m_SessionsMutex);
auto session = ObtainUDPSession(from, toPort, fromPort);
session->IPSocket.send_to(boost::asio::buffer(buf, len), m_Endpoint);
session->IPSocket.send_to(boost::asio::buffer(buf, len), m_RemoteEndpoint);
session->LastActivity = i2p::util::GetMillisecondsSinceEpoch();
}
@ -548,20 +548,25 @@ namespace client
UDPSession * I2PUDPServerTunnel::ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort)
{
auto ih = from.GetIdentHash();
for ( UDPSession * s : m_Sessions ) {
if ( s->Identity == ih) {
/** found existing */
for ( UDPSession * s : m_Sessions )
{
if ( s->Identity == ih)
{
/** found existing session */
LogPrint(eLogDebug, "UDPServer: found session ", s->IPSocket.local_endpoint(), " ", ih.ToBase32());
return s;
}
}
/** create new */
boost::asio::ip::udp::endpoint ep(boost::asio::ip::address::from_string("127.0.0.1"), 0);
m_Sessions.push_back(new UDPSession(ep, m_LocalDest, m_Endpoint, ih, localPort, remotePort));
/** create new udp session */
boost::asio::ip::udp::endpoint ep(m_LocalAddress, 0);
m_Sessions.push_back(new UDPSession(ep, m_LocalDest, m_RemoteEndpoint, ih, localPort, remotePort));
return m_Sessions.back();
}
UDPSession::UDPSession(boost::asio::ip::udp::endpoint localEndpoint, const std::shared_ptr<i2p::client::ClientDestination> & localDestination, boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash to, uint16_t ourPort, uint16_t theirPort) :
UDPSession::UDPSession(boost::asio::ip::udp::endpoint localEndpoint,
const std::shared_ptr<i2p::client::ClientDestination> & localDestination,
boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash to,
uint16_t ourPort, uint16_t theirPort) :
m_Destination(localDestination->GetDatagramDestination()),
m_Service(localDestination->GetService()),
IPSocket(localDestination->GetService(), localEndpoint),
@ -577,18 +582,20 @@ namespace client
void UDPSession::Receive() {
LogPrint(eLogDebug, "UDPSession: Receive");
IPSocket.async_receive_from(boost::asio::buffer(m_Buffer, I2P_UDP_MAX_MTU), FromEndpoint, std::bind(&UDPSession::HandleReceived, this, std::placeholders::_1, std::placeholders::_2));
IPSocket.async_receive_from(boost::asio::buffer(m_Buffer, I2P_UDP_MAX_MTU),
FromEndpoint, std::bind(&UDPSession::HandleReceived, this, std::placeholders::_1, std::placeholders::_2));
}
void UDPSession::HandleReceived(const boost::system::error_code & ecode, std::size_t len)
{
if(!ecode) {
if(!ecode)
{
LogPrint(eLogDebug, "UDPSession: forward ", len, "B from ", FromEndpoint);
LastActivity = i2p::util::GetMillisecondsSinceEpoch();
uint8_t * data = new uint8_t[len];
memcpy(data, m_Buffer, len);
m_Service.post([&,len, data] () {
m_Destination->SendDatagramTo(data, len, Identity, 0, 0);
m_Destination->SendDatagramTo(data, len, Identity, 0, 0);
delete [] data;
});
@ -600,9 +607,12 @@ namespace client
I2PUDPServerTunnel::I2PUDPServerTunnel(const std::string & name, std::shared_ptr<i2p::client::ClientDestination> localDestination, boost::asio::ip::udp::endpoint forwardTo, uint16_t port) :
I2PUDPServerTunnel::I2PUDPServerTunnel(const std::string & name, std::shared_ptr<i2p::client::ClientDestination> localDestination,
const boost::asio::ip::address& localAddress, boost::asio::ip::udp::endpoint forwardTo, uint16_t port) :
m_LocalAddress(localAddress),
m_Name(name),
LocalPort(port),
m_Endpoint(forwardTo)
m_RemoteEndpoint(forwardTo)
{
m_LocalDest = localDestination;
m_LocalDest->Start();
@ -613,9 +623,8 @@ namespace client
I2PUDPServerTunnel::~I2PUDPServerTunnel()
{
auto dgram = m_LocalDest->GetDatagramDestination();
if (dgram) {
dgram->ResetReceiver();
}
if (dgram) dgram->ResetReceiver();
LogPrint(eLogInfo, "UDPServer: done");
}
@ -623,7 +632,11 @@ namespace client
m_LocalDest->Start();
}
I2PUDPClientTunnel::I2PUDPClientTunnel(const std::string & name, const std::string &remoteDest, boost::asio::ip::udp::endpoint localEndpoint, std::shared_ptr<i2p::client::ClientDestination> localDestination, uint16_t remotePort) :
I2PUDPClientTunnel::I2PUDPClientTunnel(const std::string & name, const std::string &remoteDest,
boost::asio::ip::udp::endpoint localEndpoint,
std::shared_ptr<i2p::client::ClientDestination> localDestination,
uint16_t remotePort) :
m_Name(name),
m_Session(nullptr),
m_RemoteDest(remoteDest),
m_RemoteIdent(nullptr),
@ -654,50 +667,57 @@ namespace client
m_RemoteIdent = new i2p::data::IdentHash;
m_RemoteIdent->Fill(0);
while(!context.GetAddressBook().GetIdentHash(m_RemoteDest, *m_RemoteIdent) && !m_cancel_resolve) {
while(!context.GetAddressBook().GetIdentHash(m_RemoteDest, *m_RemoteIdent) && !m_cancel_resolve)
{
LogPrint(eLogWarning, "UDP Tunnel: failed to lookup ", m_RemoteDest);
std::this_thread::sleep_for(std::chrono::seconds(1));
}
if(m_cancel_resolve) {
if(m_cancel_resolve)
{
LogPrint(eLogError, "UDP Tunnel: lookup of ", m_RemoteDest, " was cancelled");
return;
}
LogPrint(eLogInfo, "UDP Tunnel: resolved ", m_RemoteDest, " to ", m_RemoteIdent->ToBase32());
// delete existing session
if(m_Session) delete m_Session;
boost::asio::ip::udp::endpoint ep(boost::asio::ip::address::from_string("127.0.0.1"), 0);
m_Session = new UDPSession(m_LocalEndpoint, m_LocalDest, ep, *m_RemoteIdent, LocalPort, RemotePort);
}
void I2PUDPClientTunnel::HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len)
{
if(m_RemoteIdent && from.GetIdentHash() == *m_RemoteIdent) {
if(m_RemoteIdent && from.GetIdentHash() == *m_RemoteIdent)
{
// address match
if(m_Session) {
if(m_Session)
{
// tell session
LogPrint(eLogDebug, "UDP Client: got ", len, "B from ", from.GetIdentHash().ToBase32());
m_Session->IPSocket.send_to(boost::asio::buffer(buf, len), m_Session->FromEndpoint);
} else {
LogPrint(eLogWarning, "UDP Client: no session");
}
} else {
LogPrint(eLogWarning, "UDP Client: unwarrented traffic from ", from.GetIdentHash().ToBase32());
else
LogPrint(eLogWarning, "UDP Client: no session");
}
else
LogPrint(eLogWarning, "UDP Client: unwarrented traffic from ", from.GetIdentHash().ToBase32());
}
I2PUDPClientTunnel::~I2PUDPClientTunnel() {
auto dgram = m_LocalDest->GetDatagramDestination();
if (dgram) {
dgram->ResetReceiver();
}
if (dgram) dgram->ResetReceiver();
if (m_Session) delete m_Session;
m_cancel_resolve = true;
if(m_ResolveThread) {
if(m_ResolveThread)
{
m_ResolveThread->join();
delete m_ResolveThread;
m_ResolveThread = nullptr;
}
if (m_RemoteIdent) delete m_RemoteIdent;
}
}
}
}
}