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Merge f168e4586c into ac2caf2787

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Jeff 2016-12-12 22:16:49 +00:00 • committed by GitHub
commit 34e3ac2b7a
7 changed files with 291 additions and 70 deletions
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1
Config.cpp
View file

@ -91,6 +91,7 @@ namespace config {
("httpproxy.outbound.quantity", value<std::string>()->default_value("5"), "HTTP proxy outbound tunnels quantity") ("httpproxy.outbound.quantity", value<std::string>()->default_value("5"), "HTTP proxy outbound tunnels quantity")
("httpproxy.latency.min", value<std::string>()->default_value("0"), "HTTP proxy min latency for tunnels") ("httpproxy.latency.min", value<std::string>()->default_value("0"), "HTTP proxy min latency for tunnels")
("httpproxy.latency.max", value<std::string>()->default_value("0"), "HTTP proxy max latency for tunnels") ("httpproxy.latency.max", value<std::string>()->default_value("0"), "HTTP proxy max latency for tunnels")
("httpproxy.outproxy", value<std::string>()->default_value(""), "HTTP proxy upstream out proxy url")
; ;
options_description socksproxy("SOCKS Proxy options"); options_description socksproxy("SOCKS Proxy options");

185
HTTPProxy.cpp
View file

@ -64,15 +64,37 @@ namespace proxy {
void HostNotFound(std::string & host); void HostNotFound(std::string & host);
void SendProxyError(std::string & content); void SendProxyError(std::string & content);
void ForwardToUpstreamProxy();
void HandleUpstreamHTTPProxyConnect(const boost::system::error_code & ec);
void HandleUpstreamSocksProxyConnect(const boost::system::error_code & ec);
void HandleSocksProxySendHandshake(const boost::system::error_code & ec, std::size_t bytes_transfered);
void HandleSocksProxyReply(const boost::system::error_code & ec, std::size_t bytes_transfered);
typedef std::function<void(boost::asio::ip::tcp::endpoint)> ProxyResolvedHandler;
void HandleUpstreamProxyResolved(const boost::system::error_code & ecode, boost::asio::ip::tcp::resolver::iterator itr, ProxyResolvedHandler handler);
void SocksProxySuccess();
void HandoverToUpstreamProxy();
uint8_t m_recv_chunk[8192]; uint8_t m_recv_chunk[8192];
std::string m_recv_buf; // from client std::string m_recv_buf; // from client
std::string m_send_buf; // to upstream std::string m_send_buf; // to upstream
std::shared_ptr<boost::asio::ip::tcp::socket> m_sock; std::shared_ptr<boost::asio::ip::tcp::socket> m_sock;
std::shared_ptr<boost::asio::ip::tcp::socket> m_proxysock;
boost::asio::ip::tcp::resolver m_proxy_resolver;
i2p::http::URL m_RequestURL;
i2p::http::URL m_ProxyURL;
std::string m_HTTPMethod;
uint8_t m_socks_buf[255+8]; // for socks request/response
public: public:
HTTPReqHandler(HTTPProxy * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock) : HTTPReqHandler(HTTPProxy * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock) :
I2PServiceHandler(parent), m_sock(sock) {} I2PServiceHandler(parent), m_sock(sock),
m_proxysock(std::make_shared<boost::asio::ip::tcp::socket>(parent->GetService())),
m_proxy_resolver(parent->GetService()) {}
~HTTPReqHandler() { Terminate(); } ~HTTPReqHandler() { Terminate(); }
void Handle () { AsyncSockRead(); } /* overload */ void Handle () { AsyncSockRead(); } /* overload */
}; };
@ -97,6 +119,12 @@ namespace proxy {
m_sock->close(); m_sock->close();
m_sock = nullptr; m_sock = nullptr;
} }
if(m_proxysock)
{
if(m_proxysock->is_open())
m_proxysock->close();
m_proxysock = nullptr;
}
Done(shared_from_this()); Done(shared_from_this());
} }
@ -142,7 +170,7 @@ namespace proxy {
<< "</html>\r\n"; << "</html>\r\n";
res.body = ss.str(); res.body = ss.str();
std::string response = res.to_string(); std::string response = res.to_string();
boost::asio::async_write(*m_sock, boost::asio::buffer(response), boost::asio::async_write(*m_sock, boost::asio::buffer(response), boost::asio::transfer_all(),
std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1)); std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1));
} }
@ -199,7 +227,6 @@ namespace proxy {
bool HTTPReqHandler::HandleRequest() bool HTTPReqHandler::HandleRequest()
{ {
i2p::http::HTTPReq req; i2p::http::HTTPReq req;
i2p::http::URL url;
std::string b64; std::string b64;
int req_len = 0; int req_len = 0;
@ -216,14 +243,14 @@ namespace proxy {
/* parsing success, now let's look inside request */ /* parsing success, now let's look inside request */
LogPrint(eLogDebug, "HTTPProxy: requested: ", req.uri); LogPrint(eLogDebug, "HTTPProxy: requested: ", req.uri);
url.parse(req.uri); m_RequestURL.parse(req.uri);
if (ExtractAddressHelper(url, b64)) { if (ExtractAddressHelper(m_RequestURL, b64)) {
i2p::client::context.GetAddressBook ().InsertAddress (url.host, b64); i2p::client::context.GetAddressBook ().InsertAddress (m_RequestURL.host, b64);
LogPrint (eLogInfo, "HTTPProxy: added b64 from addresshelper for ", url.host); LogPrint (eLogInfo, "HTTPProxy: added b64 from addresshelper for ", m_RequestURL.host);
std::string full_url = url.to_string(); std::string full_url = m_RequestURL.to_string();
std::stringstream ss; std::stringstream ss;
ss << "Host " << url.host << " added to router's addressbook from helper. " ss << "Host " << m_RequestURL.host << " added to router's addressbook from helper. "
<< "Click <a href=\"" << full_url << "\">here</a> to proceed."; << "Click <a href=\"" << full_url << "\">here</a> to proceed.";
GenericProxyInfo("Addresshelper found", ss.str().c_str()); GenericProxyInfo("Addresshelper found", ss.str().c_str());
return true; /* request processed */ return true; /* request processed */
@ -231,11 +258,11 @@ namespace proxy {
SanitizeHTTPRequest(req); SanitizeHTTPRequest(req);
std::string dest_host = url.host; std::string dest_host = m_RequestURL.host;
uint16_t dest_port = url.port; uint16_t dest_port = m_RequestURL.port;
/* always set port, even if missing in request */ /* always set port, even if missing in request */
if (!dest_port) { if (!dest_port) {
dest_port = (url.schema == "https") ? 443 : 80; dest_port = (m_RequestURL.schema == "https") ? 443 : 80;
} }
/* detect dest_host, set proper 'Host' header in upstream request */ /* detect dest_host, set proper 'Host' header in upstream request */
auto h = req.headers.find("Host"); auto h = req.headers.find("Host");
@ -266,17 +293,27 @@ namespace proxy {
return true; /* request processed */ return true; /* request processed */
} }
/* TODO: outproxy handler here */ /* TODO: outproxy handler here */
} else {
std::string outproxyUrl; i2p::config::GetOption("httpproxy.outproxy", outproxyUrl);
if(outproxyUrl.size()) {
m_HTTPMethod = req.method;
LogPrint (eLogDebug, "HTTPProxy: use outproxy ", outproxyUrl);
if(m_ProxyURL.parse(outproxyUrl))
ForwardToUpstreamProxy();
else
GenericProxyError("Outproxy failure", "bad outproxy settings");
} else { } else {
LogPrint (eLogWarning, "HTTPProxy: outproxy failure for ", dest_host, ": not implemented yet"); LogPrint (eLogWarning, "HTTPProxy: outproxy failure for ", dest_host, ": not implemented yet");
std::string message = "Host" + dest_host + "not inside I2P network, but outproxy support not implemented yet"; std::string message = "Host" + dest_host + "not inside I2P network, but outproxy support not implemented yet";
GenericProxyError("Outproxy failure", message.c_str()); GenericProxyError("Outproxy failure", message.c_str());
}
return true; return true;
} }
/* make relative url */ /* make relative url */
url.schema = ""; m_RequestURL.schema = "";
url.host = ""; m_RequestURL.host = "";
req.uri = url.to_string(); req.uri = m_RequestURL.to_string();
/* drop original request from recv buffer */ /* drop original request from recv buffer */
m_recv_buf.erase(0, req_len); m_recv_buf.erase(0, req_len);
@ -290,6 +327,124 @@ namespace proxy {
return true; return true;
} }
void HTTPReqHandler::ForwardToUpstreamProxy()
{
LogPrint(eLogDebug, "HTTPProxy: forward to upstream");
// assume http if empty schema
if (m_ProxyURL.schema == "" || m_ProxyURL.schema == "http") {
// handle upstream http proxy
if (!m_ProxyURL.port) m_ProxyURL.port = 80;
boost::asio::ip::tcp::resolver::query q(m_ProxyURL.host, std::to_string(m_ProxyURL.port));
m_proxy_resolver.async_resolve(q, std::bind(&HTTPReqHandler::HandleUpstreamProxyResolved, this, std::placeholders::_1, std::placeholders::_2, [&](boost::asio::ip::tcp::endpoint ep) {
m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamHTTPProxyConnect, this, std::placeholders::_1));
}));
} else if (m_ProxyURL.schema == "socks") {
// handle upstream socks proxy
if (!m_ProxyURL.port) m_ProxyURL.port = 9050; // default to tor default if not specified
boost::asio::ip::tcp::resolver::query q(m_ProxyURL.host, std::to_string(m_ProxyURL.port));
m_proxy_resolver.async_resolve(q, std::bind(&HTTPReqHandler::HandleUpstreamProxyResolved, this, std::placeholders::_1, std::placeholders::_2, [&](boost::asio::ip::tcp::endpoint ep) {
m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamSocksProxyConnect, this, std::placeholders::_1));
}));
} else {
// unknown type, complain
GenericProxyError("unknown outproxy url", m_ProxyURL.to_string().c_str());
}
}
void HTTPReqHandler::HandleUpstreamProxyResolved(const boost::system::error_code & ec, boost::asio::ip::tcp::resolver::iterator it, ProxyResolvedHandler handler)
{
if(ec) GenericProxyError("cannot resolve upstream proxy", ec.message().c_str());
else handler(*it);
}
void HTTPReqHandler::HandleUpstreamSocksProxyConnect(const boost::system::error_code & ec)
{
if(!ec) {
if(m_RequestURL.host.size() > 255) {
GenericProxyError("hostname too long", m_RequestURL.host.c_str());
return;
}
uint16_t port = m_RequestURL.port;
LogPrint(eLogDebug, "HTTPProxy: connected to socks upstream");
if(m_HTTPMethod == "CONNECT") {
std::string host = m_RequestURL.host;
std::size_t reqsize = 0;
m_socks_buf[0] = '\x04';
m_socks_buf[1] = 1;
htobe16buf(m_socks_buf+2, port);
m_socks_buf[4] = 0;
m_socks_buf[5] = 0;
m_socks_buf[6] = 0;
m_socks_buf[7] = 1;
// user id
m_socks_buf[8] = 'i';
m_socks_buf[9] = '2';
m_socks_buf[10] = 'p';
m_socks_buf[11] = 'd';
m_socks_buf[12] = 0;
reqsize += 13;
memcpy(m_socks_buf+ reqsize, host.c_str(), host.size());
reqsize += host.size();
m_socks_buf[++reqsize] = 0;
m_proxysock->async_write_some(boost::asio::buffer(m_socks_buf, reqsize), std::bind(&HTTPReqHandler::HandleSocksProxySendHandshake, this, std::placeholders::_1, std::placeholders::_2));
} else {
GenericProxyError("unsupported http method", m_HTTPMethod.c_str());
}
} else GenericProxyError("cannot connect to upstream socks proxy", ec.message().c_str());
}
void HTTPReqHandler::HandleSocksProxySendHandshake(const boost::system::error_code & ec, std::size_t bytes_transferred)
{
if(ec) GenericProxyError("Cannot negotiate with socks proxy", ec.message().c_str());
else m_proxysock->async_read_some(boost::asio::buffer(m_socks_buf, 8), std::bind(&HTTPReqHandler::HandleSocksProxyReply, this, std::placeholders::_1, std::placeholders::_2));
}
void HTTPReqHandler::HandoverToUpstreamProxy()
{
auto connection = std::make_shared<i2p::client::TCPIPPipe>(GetOwner(), m_proxysock, m_sock);
m_sock = nullptr;
m_proxysock = nullptr;
GetOwner()->AddHandler(connection);
connection->Start();
Terminate();
}
void HTTPReqHandler::SocksProxySuccess()
{
i2p::http::HTTPRes res;
res.code = 200;
std::string response = res.to_string();
boost::asio::async_write(*m_sock, boost::asio::buffer(response), boost::asio::transfer_all(), [&] (const boost::system::error_code & ec, std::size_t transferred) {
if(ec) GenericProxyError("socks proxy error", ec.message().c_str());
else HandoverToUpstreamProxy();
});
}
void HTTPReqHandler::HandleSocksProxyReply(const boost::system::error_code & ec, std::size_t bytes_transferred)
{
if(!ec)
{
if(m_socks_buf[1] == 90) {
// success
SocksProxySuccess();
} else {
std::stringstream ss;
ss << (int) m_socks_buf[1];
std::string msg = ss.str();
GenericProxyError("Socks Proxy error", msg.c_str());
}
}
else GenericProxyError("No Reply From socks proxy", ec.message().c_str());
}
void HTTPReqHandler::HandleUpstreamHTTPProxyConnect(const boost::system::error_code & ec)
{
if(!ec) {
LogPrint(eLogDebug, "HTTPProxy: connected to http upstream");
GenericProxyError("cannot connect", "http out proxy not implemented");
} else GenericProxyError("cannot connect to upstream http proxy", ec.message().c_str());
}
/* will be called after some data received from client */ /* will be called after some data received from client */
void HTTPReqHandler::HandleSockRecv(const boost::system::error_code & ecode, std::size_t len) void HTTPReqHandler::HandleSockRecv(const boost::system::error_code & ecode, std::size_t len)
{ {

114
I2PTunnel.cpp
View file

@ -540,15 +540,28 @@ namespace client
void I2PUDPServerTunnel::ExpireStale(const uint64_t delta) { void I2PUDPServerTunnel::ExpireStale(const uint64_t delta) {
std::lock_guard<std::mutex> lock(m_SessionsMutex); std::lock_guard<std::mutex> lock(m_SessionsMutex);
uint64_t now = i2p::util::GetMillisecondsSinceEpoch(); uint64_t now = i2p::util::GetMillisecondsSinceEpoch();
std::remove_if(m_Sessions.begin(), m_Sessions.end(), [now, delta](const UDPSession * u) -> bool { std::remove_if(m_Sessions.begin(), m_Sessions.end(), [now, delta](const std::shared_ptr<UDPSession> & u) -> bool {
return now - u->LastActivity >= delta; return now - u->LastActivity >= delta;
}); });
} }
UDPSession * I2PUDPServerTunnel::ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort) void I2PUDPClientTunnel::ExpireStale(const uint64_t delta) {
std::lock_guard<std::mutex> lock(m_SessionsMutex);
uint64_t now = i2p::util::GetMillisecondsSinceEpoch();
std::vector<uint16_t> removePorts;
for (const auto & s : m_Sessions) {
if (now - s.second.second >= delta)
removePorts.push_back(s.first);
}
for(auto port : removePorts) {
m_Sessions.erase(port);
}
}
std::shared_ptr<UDPSession> I2PUDPServerTunnel::ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort)
{ {
auto ih = from.GetIdentHash(); auto ih = from.GetIdentHash();
for ( UDPSession * s : m_Sessions ) for (auto & s : m_Sessions )
{ {
if ( s->Identity == ih) if ( s->Identity == ih)
{ {
@ -559,8 +572,9 @@ namespace client
} }
/** create new udp session */ /** create new udp session */
boost::asio::ip::udp::endpoint ep(m_LocalAddress, 0); boost::asio::ip::udp::endpoint ep(m_LocalAddress, 0);
m_Sessions.push_back(new UDPSession(ep, m_LocalDest, m_RemoteEndpoint, &ih, localPort, remotePort)); m_Sessions.push_back(std::make_shared<UDPSession>(ep, m_LocalDest, m_RemoteEndpoint, &ih, localPort, remotePort));
return m_Sessions.back(); auto & back = m_Sessions.back();
return back;
} }
UDPSession::UDPSession(boost::asio::ip::udp::endpoint localEndpoint, UDPSession::UDPSession(boost::asio::ip::udp::endpoint localEndpoint,
@ -568,7 +582,6 @@ namespace client
boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash * to, boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash * to,
uint16_t ourPort, uint16_t theirPort) : uint16_t ourPort, uint16_t theirPort) :
m_Destination(localDestination->GetDatagramDestination()), m_Destination(localDestination->GetDatagramDestination()),
m_Service(localDestination->GetService()),
IPSocket(localDestination->GetService(), localEndpoint), IPSocket(localDestination->GetService(), localEndpoint),
SendEndpoint(endpoint), SendEndpoint(endpoint),
LastActivity(i2p::util::GetMillisecondsSinceEpoch()), LastActivity(i2p::util::GetMillisecondsSinceEpoch()),
@ -592,7 +605,7 @@ namespace client
{ {
LogPrint(eLogDebug, "UDPSession: forward ", len, "B from ", FromEndpoint); LogPrint(eLogDebug, "UDPSession: forward ", len, "B from ", FromEndpoint);
LastActivity = i2p::util::GetMillisecondsSinceEpoch(); LastActivity = i2p::util::GetMillisecondsSinceEpoch();
m_Destination->SendDatagramTo(m_Buffer, len, Identity, 0, 0); m_Destination->SendDatagramTo(m_Buffer, len, Identity, LocalPort, RemotePort);
Receive(); Receive();
} else { } else {
LogPrint(eLogError, "UDPSession: ", ecode.message()); LogPrint(eLogError, "UDPSession: ", ecode.message());
@ -602,9 +615,8 @@ namespace client
I2PUDPServerTunnel::I2PUDPServerTunnel(const std::string & name, std::shared_ptr<i2p::client::ClientDestination> localDestination, 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) : boost::asio::ip::address localAddress, boost::asio::ip::udp::endpoint forwardTo, uint16_t port) :
m_Name(name), m_Name(name),
LocalPort(port),
m_LocalAddress(localAddress), m_LocalAddress(localAddress),
m_RemoteEndpoint(forwardTo) m_RemoteEndpoint(forwardTo)
{ {
@ -630,7 +642,7 @@ namespace client
{ {
std::vector<std::shared_ptr<DatagramSessionInfo> > sessions; std::vector<std::shared_ptr<DatagramSessionInfo> > sessions;
std::lock_guard<std::mutex> lock(m_SessionsMutex); std::lock_guard<std::mutex> lock(m_SessionsMutex);
for ( UDPSession * s : m_Sessions ) for (auto & s : m_Sessions )
{ {
if (!s->m_Destination) continue; if (!s->m_Destination) continue;
auto info = s->m_Destination->GetInfoForRemote(s->Identity); auto info = s->m_Destination->GetInfoForRemote(s->Identity);
@ -652,13 +664,12 @@ namespace client
std::shared_ptr<i2p::client::ClientDestination> localDestination, std::shared_ptr<i2p::client::ClientDestination> localDestination,
uint16_t remotePort) : uint16_t remotePort) :
m_Name(name), m_Name(name),
m_Session(nullptr),
m_RemoteDest(remoteDest), m_RemoteDest(remoteDest),
m_LocalDest(localDestination), m_LocalDest(localDestination),
m_LocalEndpoint(localEndpoint), m_LocalEndpoint(localEndpoint),
m_RemoteIdent(nullptr), m_RemoteIdent(nullptr),
m_ResolveThread(nullptr), m_ResolveThread(nullptr),
LocalPort(localEndpoint.port()), m_LocalSocket(localDestination->GetService(), localEndpoint),
RemotePort(remotePort), RemotePort(remotePort),
m_cancel_resolve(false) m_cancel_resolve(false)
{ {
@ -675,29 +686,44 @@ namespace client
m_LocalDest->Start(); m_LocalDest->Start();
if (m_ResolveThread == nullptr) if (m_ResolveThread == nullptr)
m_ResolveThread = new std::thread(std::bind(&I2PUDPClientTunnel::TryResolving, this)); m_ResolveThread = new std::thread(std::bind(&I2PUDPClientTunnel::TryResolving, this));
RecvFromLocal();
}
void I2PUDPClientTunnel::RecvFromLocal()
{
m_LocalSocket.async_receive_from(boost::asio::buffer(m_RecvBuff, I2P_UDP_MAX_MTU),
m_RecvEndpoint, std::bind(&I2PUDPClientTunnel::HandleRecvFromLocal, this, std::placeholders::_1, std::placeholders::_2));
}
void I2PUDPClientTunnel::HandleRecvFromLocal(const boost::system::error_code & ec, std::size_t transferred)
{
if(ec) {
LogPrint(eLogError, "UDP Client: ", ec.message());
return;
}
if(!m_RemoteIdent) {
LogPrint(eLogWarning, "UDP Client: remote endpoint not resolved yet");
RecvFromLocal();
return; // drop, remote not resolved
}
auto remotePort = m_RecvEndpoint.port();
auto itr = m_Sessions.find(remotePort);
if (itr == m_Sessions.end()) {
// track new udp convo
m_Sessions[remotePort] = {boost::asio::ip::udp::endpoint(m_RecvEndpoint), 0};
}
// send off to remote i2p destination
LogPrint(eLogDebug, "UDP Client: send ", transferred, " to ", m_RemoteIdent->ToBase32(), ":", RemotePort);
m_LocalDest->GetDatagramDestination()->SendDatagramTo(m_RecvBuff, transferred, *m_RemoteIdent, remotePort, RemotePort);
// mark convo as active
m_Sessions[remotePort].second = i2p::util::GetMillisecondsSinceEpoch();
RecvFromLocal();
} }
std::vector<std::shared_ptr<DatagramSessionInfo> > I2PUDPClientTunnel::GetSessions() std::vector<std::shared_ptr<DatagramSessionInfo> > I2PUDPClientTunnel::GetSessions()
{ {
// TODO: implement
std::vector<std::shared_ptr<DatagramSessionInfo> > infos; std::vector<std::shared_ptr<DatagramSessionInfo> > infos;
if(m_Session && m_LocalDest)
{
auto s = m_Session;
if (s->m_Destination)
{
auto info = m_Session->m_Destination->GetInfoForRemote(s->Identity);
if(info)
{
auto sinfo = std::make_shared<DatagramSessionInfo>();
sinfo->Name = m_Name;
sinfo->LocalIdent = std::make_shared<i2p::data::IdentHash>(m_LocalDest->GetIdentHash().data());
sinfo->RemoteIdent = std::make_shared<i2p::data::IdentHash>(s->Identity.data());
sinfo->CurrentIBGW = info->IBGW;
sinfo->CurrentOBEP = info->OBEP;
infos.push_back(sinfo);
}
}
}
return infos; return infos;
} }
@ -717,26 +743,28 @@ namespace client
return; return;
} }
LogPrint(eLogInfo, "UDP Tunnel: resolved ", m_RemoteDest, " to ", m_RemoteIdent->ToBase32()); 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) 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 auto itr = m_Sessions.find(toPort);
if(m_Session) // found convo ?
if(itr != m_Sessions.end())
{ {
// tell session // found convo
if (len > 0) {
LogPrint(eLogDebug, "UDP Client: got ", len, "B from ", from.GetIdentHash().ToBase32()); LogPrint(eLogDebug, "UDP Client: got ", len, "B from ", from.GetIdentHash().ToBase32());
m_Session->IPSocket.send_to(boost::asio::buffer(buf, len), m_Session->FromEndpoint); uint8_t sendbuf[len];
memcpy(sendbuf, buf, len);
m_LocalSocket.send_to(boost::asio::buffer(buf, len), itr->second.first);
// mark convo as active
itr->second.second = i2p::util::GetMillisecondsSinceEpoch();
}
} }
else else
LogPrint(eLogWarning, "UDP Client: no session"); LogPrint(eLogWarning, "UDP Client: not tracking udp session using port ", (int) toPort);
} }
else else
LogPrint(eLogWarning, "UDP Client: unwarrented traffic from ", from.GetIdentHash().ToBase32()); LogPrint(eLogWarning, "UDP Client: unwarrented traffic from ", from.GetIdentHash().ToBase32());
@ -747,7 +775,11 @@ namespace client
auto dgram = m_LocalDest->GetDatagramDestination(); auto dgram = m_LocalDest->GetDatagramDestination();
if (dgram) dgram->ResetReceiver(); if (dgram) dgram->ResetReceiver();
if (m_Session) delete m_Session; m_Sessions.clear();
if(m_LocalSocket.is_open())
m_LocalSocket.close();
m_cancel_resolve = true; m_cancel_resolve = true;
if(m_ResolveThread) if(m_ResolveThread)

20
I2PTunnel.h
View file

@ -4,6 +4,7 @@
#include <inttypes.h> #include <inttypes.h>
#include <string> #include <string>
#include <set> #include <set>
#include <tuple>
#include <memory> #include <memory>
#include <sstream> #include <sstream>
#include <boost/asio.hpp> #include <boost/asio.hpp>
@ -141,7 +142,6 @@ namespace client
struct UDPSession struct UDPSession
{ {
i2p::datagram::DatagramDestination * m_Destination; i2p::datagram::DatagramDestination * m_Destination;
boost::asio::io_service & m_Service;
boost::asio::ip::udp::socket IPSocket; boost::asio::ip::udp::socket IPSocket;
i2p::data::IdentHash Identity; i2p::data::IdentHash Identity;
boost::asio::ip::udp::endpoint FromEndpoint; boost::asio::ip::udp::endpoint FromEndpoint;
@ -189,7 +189,7 @@ namespace client
public: public:
I2PUDPServerTunnel(const std::string & name, I2PUDPServerTunnel(const std::string & name,
std::shared_ptr<i2p::client::ClientDestination> localDestination, std::shared_ptr<i2p::client::ClientDestination> localDestination,
const boost::asio::ip::address & localAddress, boost::asio::ip::address localAddress,
boost::asio::ip::udp::endpoint forwardTo, uint16_t port); boost::asio::ip::udp::endpoint forwardTo, uint16_t port);
~I2PUDPServerTunnel(); ~I2PUDPServerTunnel();
/** expire stale udp conversations */ /** expire stale udp conversations */
@ -202,15 +202,14 @@ namespace client
private: private:
void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len); void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
UDPSession * ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort); std::shared_ptr<UDPSession> ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort);
private: private:
const std::string m_Name; const std::string m_Name;
const uint16_t LocalPort;
boost::asio::ip::address m_LocalAddress; boost::asio::ip::address m_LocalAddress;
boost::asio::ip::udp::endpoint m_RemoteEndpoint; boost::asio::ip::udp::endpoint m_RemoteEndpoint;
std::mutex m_SessionsMutex; std::mutex m_SessionsMutex;
std::vector<UDPSession*> m_Sessions; std::vector<std::shared_ptr<UDPSession> > m_Sessions;
std::shared_ptr<i2p::client::ClientDestination> m_LocalDest; std::shared_ptr<i2p::client::ClientDestination> m_LocalDest;
}; };
@ -228,18 +227,25 @@ namespace client
bool IsLocalDestination(const i2p::data::IdentHash & destination) const { return destination == m_LocalDest->GetIdentHash(); } bool IsLocalDestination(const i2p::data::IdentHash & destination) const { return destination == m_LocalDest->GetIdentHash(); }
std::shared_ptr<ClientDestination> GetLocalDestination () const { return m_LocalDest; } std::shared_ptr<ClientDestination> GetLocalDestination () const { return m_LocalDest; }
void ExpireStale(const uint64_t delta=I2P_UDP_SESSION_TIMEOUT);
private: private:
typedef std::pair<boost::asio::ip::udp::endpoint, uint64_t> UDPConvo;
void RecvFromLocal();
void HandleRecvFromLocal(const boost::system::error_code & e, std::size_t transferred);
void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len); void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
void TryResolving(); void TryResolving();
const std::string m_Name; const std::string m_Name;
UDPSession * m_Session; std::mutex m_SessionsMutex;
std::map<uint16_t, UDPConvo > m_Sessions; // maps i2p port -> local udp convo
const std::string m_RemoteDest; const std::string m_RemoteDest;
std::shared_ptr<i2p::client::ClientDestination> m_LocalDest; std::shared_ptr<i2p::client::ClientDestination> m_LocalDest;
const boost::asio::ip::udp::endpoint m_LocalEndpoint; const boost::asio::ip::udp::endpoint m_LocalEndpoint;
i2p::data::IdentHash * m_RemoteIdent; i2p::data::IdentHash * m_RemoteIdent;
std::thread * m_ResolveThread; std::thread * m_ResolveThread;
uint16_t LocalPort; boost::asio::ip::udp::socket m_LocalSocket;
boost::asio::ip::udp::endpoint m_RecvEndpoint;
uint8_t m_RecvBuff[I2P_UDP_MAX_MTU];
uint16_t RemotePort; uint16_t RemotePort;
bool m_cancel_resolve; bool m_cancel_resolve;
}; };

6
Tunnel.cpp
View file

@ -612,6 +612,7 @@ namespace tunnel
for (auto it = pendingTunnels.begin (); it != pendingTunnels.end ();) for (auto it = pendingTunnels.begin (); it != pendingTunnels.end ();)
{ {
auto tunnel = it->second; auto tunnel = it->second;
auto pool = tunnel->GetTunnelPool();
switch (tunnel->GetState ()) switch (tunnel->GetState ())
{ {
case eTunnelStatePending: case eTunnelStatePending:
@ -637,6 +638,8 @@ namespace tunnel
#ifdef WITH_EVENTS #ifdef WITH_EVENTS
EmitTunnelEvent("tunnel.state", tunnel.get(), eTunnelStateBuildFailed); EmitTunnelEvent("tunnel.state", tunnel.get(), eTunnelStateBuildFailed);
#endif #endif
// for i2lua
if(pool) pool->OnTunnelBuildResult(tunnel, eBuildResultTimeout);
// delete // delete
it = pendingTunnels.erase (it); it = pendingTunnels.erase (it);
m_NumFailedTunnelCreations++; m_NumFailedTunnelCreations++;
@ -649,6 +652,9 @@ namespace tunnel
#ifdef WITH_EVENTS #ifdef WITH_EVENTS
EmitTunnelEvent("tunnel.state", tunnel.get(), eTunnelStateBuildFailed); EmitTunnelEvent("tunnel.state", tunnel.get(), eTunnelStateBuildFailed);
#endif #endif
// for i2lua
if(pool) pool->OnTunnelBuildResult(tunnel, eBuildResultRejected);
it = pendingTunnels.erase (it); it = pendingTunnels.erase (it);
m_NumFailedTunnelCreations++; m_NumFailedTunnelCreations++;
break; break;

10
TunnelPool.cpp
View file

@ -81,6 +81,8 @@ namespace tunnel
} }
if (m_LocalDestination) if (m_LocalDestination)
m_LocalDestination->SetLeaseSetUpdated (); m_LocalDestination->SetLeaseSetUpdated ();
OnTunnelBuildResult(createdTunnel, eBuildResultOkay);
} }
void TunnelPool::TunnelExpired (std::shared_ptr<InboundTunnel> expiredTunnel) void TunnelPool::TunnelExpired (std::shared_ptr<InboundTunnel> expiredTunnel)
@ -109,6 +111,8 @@ namespace tunnel
std::unique_lock<std::mutex> l(m_OutboundTunnelsMutex); std::unique_lock<std::mutex> l(m_OutboundTunnelsMutex);
m_OutboundTunnels.insert (createdTunnel); m_OutboundTunnels.insert (createdTunnel);
} }
OnTunnelBuildResult(createdTunnel, eBuildResultOkay);
//CreatePairedInboundTunnel (createdTunnel); //CreatePairedInboundTunnel (createdTunnel);
} }
@ -579,5 +583,11 @@ namespace tunnel
} }
return tun; return tun;
} }
void TunnelPool::OnTunnelBuildResult(std::shared_ptr<Tunnel> tunnel, TunnelBuildResult result)
{
auto peers = tunnel->GetPeers();
if(m_CustomPeerSelector) m_CustomPeerSelector->OnBuildResult(peers, tunnel->IsInbound(), result);
}
} }
} }

11
TunnelPool.h
View file

@ -23,12 +23,21 @@ namespace tunnel
class InboundTunnel; class InboundTunnel;
class OutboundTunnel; class OutboundTunnel;
enum TunnelBuildResult {
eBuildResultOkay, // tunnel was built okay
eBuildResultRejected, // tunnel build was explicitly rejected
eBuildResultTimeout // tunnel build timed out
};
/** interface for custom tunnel peer selection algorithm */ /** interface for custom tunnel peer selection algorithm */
struct ITunnelPeerSelector struct ITunnelPeerSelector
{ {
typedef std::shared_ptr<const i2p::data::IdentityEx> Peer; typedef std::shared_ptr<const i2p::data::IdentityEx> Peer;
typedef std::vector<Peer> TunnelPath; typedef std::vector<Peer> TunnelPath;
virtual bool SelectPeers(TunnelPath & peers, int hops, bool isInbound) = 0; virtual bool SelectPeers(TunnelPath & peers, int hops, bool isInbound) = 0;
virtual bool OnBuildResult(TunnelPath & peers, bool isInbound, TunnelBuildResult result) = 0;
}; };
typedef std::shared_ptr<ITunnelPeerSelector> TunnelPeerSelector; typedef std::shared_ptr<ITunnelPeerSelector> TunnelPeerSelector;
@ -80,6 +89,8 @@ namespace tunnel
std::shared_ptr<InboundTunnel> GetLowestLatencyInboundTunnel(std::shared_ptr<InboundTunnel> exclude=nullptr) const; std::shared_ptr<InboundTunnel> GetLowestLatencyInboundTunnel(std::shared_ptr<InboundTunnel> exclude=nullptr) const;
std::shared_ptr<OutboundTunnel> GetLowestLatencyOutboundTunnel(std::shared_ptr<OutboundTunnel> exclude=nullptr) const; std::shared_ptr<OutboundTunnel> GetLowestLatencyOutboundTunnel(std::shared_ptr<OutboundTunnel> exclude=nullptr) const;
void OnTunnelBuildResult(std::shared_ptr<Tunnel> tunnel, TunnelBuildResult result);
private: private:
void CreateInboundTunnel (); void CreateInboundTunnel ();