mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-16 00:12:43 +00:00
330 lines
8.8 KiB
C++
330 lines
8.8 KiB
C++
#include "Destination.h"
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#include "Identity.h"
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#include "ClientContext.h"
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#include "I2PService.h"
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#include <boost/asio/error.hpp>
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namespace i2p
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{
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namespace client
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{
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static const i2p::data::SigningKeyType I2P_SERVICE_DEFAULT_KEY_TYPE = i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256;
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I2PService::I2PService (std::shared_ptr<ClientDestination> localDestination):
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m_LocalDestination (localDestination ? localDestination :
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i2p::client::context.CreateNewLocalDestination (false, I2P_SERVICE_DEFAULT_KEY_TYPE)),
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m_ReadyTimer(m_LocalDestination->GetService()),
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m_ConnectTimeout(0),
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isUpdated (true)
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{
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m_LocalDestination->Acquire ();
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}
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I2PService::I2PService (i2p::data::SigningKeyType kt):
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m_LocalDestination (i2p::client::context.CreateNewLocalDestination (false, kt)),
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m_ReadyTimer(m_LocalDestination->GetService()),
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m_ConnectTimeout(0),
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isUpdated (true)
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{
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m_LocalDestination->Acquire ();
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}
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I2PService::~I2PService ()
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{
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ClearHandlers ();
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if (m_LocalDestination) m_LocalDestination->Release ();
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}
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void I2PService::ClearHandlers ()
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{
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if(m_ConnectTimeout)
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m_ReadyTimer.cancel();
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std::unique_lock<std::mutex> l(m_HandlersMutex);
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for (auto it: m_Handlers)
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it->Terminate ();
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m_Handlers.clear();
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}
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void I2PService::SetConnectTimeout(uint32_t timeout)
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{
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if(timeout && !m_ConnectTimeout)
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{
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TriggerReadyCheckTimer();
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}
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else if (m_ConnectTimeout && !timeout)
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{
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m_ReadyTimer.cancel();
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}
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m_ConnectTimeout = timeout;
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}
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void I2PService::AddReadyCallback(ReadyCallback cb)
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{
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uint32_t now = i2p::util::GetSecondsSinceEpoch();
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uint32_t tm = now + m_ConnectTimeout;
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LogPrint(eLogDebug, "I2PService::AddReadyCallback() ", tm, " ", now);
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m_ReadyCallbacks.push_back({cb, tm});
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}
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void I2PService::TriggerReadyCheckTimer()
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{
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m_ReadyTimer.expires_from_now(boost::posix_time::seconds (1));
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m_ReadyTimer.async_wait(std::bind(&I2PService::HandleReadyCheckTimer, this, std::placeholders::_1));
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}
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void I2PService::HandleReadyCheckTimer(const boost::system::error_code &ec)
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{
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if(ec || m_LocalDestination->IsReady())
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{
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for(auto & itr : m_ReadyCallbacks)
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itr.first(ec);
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m_ReadyCallbacks.clear();
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}
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else if(!m_LocalDestination->IsReady())
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{
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// expire timed out requests
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uint32_t now = i2p::util::GetSecondsSinceEpoch ();
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auto itr = m_ReadyCallbacks.begin();
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while(itr != m_ReadyCallbacks.end())
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{
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if(itr->second >= now)
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{
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itr->first(boost::asio::error::timed_out);
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itr = m_ReadyCallbacks.erase(itr);
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}
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else
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++itr;
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}
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}
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if(!ec)
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TriggerReadyCheckTimer();
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}
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void I2PService::CreateStream (StreamRequestComplete streamRequestComplete, const std::string& dest, int port) {
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assert(streamRequestComplete);
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i2p::data::IdentHash identHash;
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if (i2p::client::context.GetAddressBook ().GetIdentHash (dest, identHash))
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CreateStream(streamRequestComplete, identHash, port);
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else
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{
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LogPrint (eLogWarning, "I2PService: Remote destination not found: ", dest);
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streamRequestComplete (nullptr);
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}
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}
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void I2PService::CreateStream(StreamRequestComplete streamRequestComplete, const i2p::data::IdentHash & identHash, int port)
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{
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if(m_ConnectTimeout)
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{
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if(m_LocalDestination->IsReady())
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m_LocalDestination->CreateStream (streamRequestComplete, identHash, port);
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else
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{
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AddReadyCallback([this, streamRequestComplete, identHash, port] (const boost::system::error_code & ec) {
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if(ec)
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{
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LogPrint(eLogWarning, "I2PService::CeateStream() ", ec.message());
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streamRequestComplete(nullptr);
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}
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else
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this->m_LocalDestination->CreateStream(streamRequestComplete, identHash, port);
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});
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}
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}
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else
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m_LocalDestination->CreateStream(streamRequestComplete, identHash, port);
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}
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TCPIPPipe::TCPIPPipe(I2PService * owner, std::shared_ptr<boost::asio::ip::tcp::socket> upstream, std::shared_ptr<boost::asio::ip::tcp::socket> downstream) : I2PServiceHandler(owner), m_up(upstream), m_down(downstream)
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{
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boost::asio::socket_base::receive_buffer_size option(TCP_IP_PIPE_BUFFER_SIZE);
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upstream->set_option(option);
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downstream->set_option(option);
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}
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TCPIPPipe::~TCPIPPipe()
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{
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Terminate();
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}
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void TCPIPPipe::Start()
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{
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AsyncReceiveUpstream();
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AsyncReceiveDownstream();
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}
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void TCPIPPipe::Terminate()
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{
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if(Kill()) return;
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if (m_up)
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{
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if (m_up->is_open())
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m_up->close();
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m_up = nullptr;
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}
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if (m_down)
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{
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if (m_down->is_open())
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m_down->close();
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m_down = nullptr;
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}
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Done(shared_from_this());
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}
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void TCPIPPipe::AsyncReceiveUpstream()
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{
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if (m_up)
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{
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m_up->async_read_some(boost::asio::buffer(m_upstream_to_down_buf, TCP_IP_PIPE_BUFFER_SIZE),
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std::bind(&TCPIPPipe::HandleUpstreamReceived, shared_from_this(),
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std::placeholders::_1, std::placeholders::_2));
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}
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else
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LogPrint(eLogError, "TCPIPPipe: upstream receive: no socket");
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}
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void TCPIPPipe::AsyncReceiveDownstream()
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{
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if (m_down) {
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m_down->async_read_some(boost::asio::buffer(m_downstream_to_up_buf, TCP_IP_PIPE_BUFFER_SIZE),
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std::bind(&TCPIPPipe::HandleDownstreamReceived, shared_from_this(),
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std::placeholders::_1, std::placeholders::_2));
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}
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else
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LogPrint(eLogError, "TCPIPPipe: downstream receive: no socket");
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}
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void TCPIPPipe::UpstreamWrite(size_t len)
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{
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if (m_up)
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{
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LogPrint(eLogDebug, "TCPIPPipe: upstream: ", (int) len, " bytes written");
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boost::asio::async_write(*m_up, boost::asio::buffer(m_upstream_buf, len),
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boost::asio::transfer_all(),
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std::bind(&TCPIPPipe::HandleUpstreamWrite,
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shared_from_this(),
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std::placeholders::_1));
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}
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else
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LogPrint(eLogError, "TCPIPPipe: upstream write: no socket");
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}
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void TCPIPPipe::DownstreamWrite(size_t len)
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{
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if (m_down)
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{
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LogPrint(eLogDebug, "TCPIPPipe: downstream: ", (int) len, " bytes written");
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boost::asio::async_write(*m_down, boost::asio::buffer(m_downstream_buf, len),
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boost::asio::transfer_all(),
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std::bind(&TCPIPPipe::HandleDownstreamWrite,
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shared_from_this(),
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std::placeholders::_1));
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}
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else
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LogPrint(eLogError, "TCPIPPipe: downstream write: no socket");
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}
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void TCPIPPipe::HandleDownstreamReceived(const boost::system::error_code & ecode, std::size_t bytes_transfered)
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{
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LogPrint(eLogDebug, "TCPIPPipe: downstream: ", (int) bytes_transfered, " bytes received");
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if (ecode)
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{
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LogPrint(eLogError, "TCPIPPipe: downstream read error:" , ecode.message());
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if (ecode != boost::asio::error::operation_aborted)
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Terminate();
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} else {
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if (bytes_transfered > 0 )
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memcpy(m_upstream_buf, m_downstream_to_up_buf, bytes_transfered);
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UpstreamWrite(bytes_transfered);
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}
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}
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void TCPIPPipe::HandleDownstreamWrite(const boost::system::error_code & ecode) {
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if (ecode)
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{
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LogPrint(eLogError, "TCPIPPipe: downstream write error:" , ecode.message());
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if (ecode != boost::asio::error::operation_aborted)
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Terminate();
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}
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else
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AsyncReceiveUpstream();
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}
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void TCPIPPipe::HandleUpstreamWrite(const boost::system::error_code & ecode) {
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if (ecode)
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{
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LogPrint(eLogError, "TCPIPPipe: upstream write error:" , ecode.message());
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if (ecode != boost::asio::error::operation_aborted)
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Terminate();
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}
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else
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AsyncReceiveDownstream();
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}
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void TCPIPPipe::HandleUpstreamReceived(const boost::system::error_code & ecode, std::size_t bytes_transfered)
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{
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LogPrint(eLogDebug, "TCPIPPipe: upstream ", (int)bytes_transfered, " bytes received");
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if (ecode)
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{
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LogPrint(eLogError, "TCPIPPipe: upstream read error:" , ecode.message());
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if (ecode != boost::asio::error::operation_aborted)
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Terminate();
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} else {
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if (bytes_transfered > 0 )
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memcpy(m_downstream_buf, m_upstream_to_down_buf, bytes_transfered);
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DownstreamWrite(bytes_transfered);
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}
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}
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void TCPIPAcceptor::Start ()
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{
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m_Acceptor.reset (new boost::asio::ip::tcp::acceptor (GetService (), m_LocalEndpoint));
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//update the local end point in case port has been set zero and got updated now
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m_LocalEndpoint = m_Acceptor->local_endpoint();
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m_Acceptor->listen ();
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Accept ();
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}
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void TCPIPAcceptor::Stop ()
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{
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if (m_Acceptor)
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{
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m_Acceptor->close();
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m_Acceptor.reset (nullptr);
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}
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m_Timer.cancel ();
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ClearHandlers();
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}
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void TCPIPAcceptor::Accept ()
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{
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auto newSocket = std::make_shared<boost::asio::ip::tcp::socket> (GetService ());
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m_Acceptor->async_accept (*newSocket, std::bind (&TCPIPAcceptor::HandleAccept, this,
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std::placeholders::_1, newSocket));
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}
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void TCPIPAcceptor::HandleAccept (const boost::system::error_code& ecode, std::shared_ptr<boost::asio::ip::tcp::socket> socket)
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{
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if (!ecode)
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{
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LogPrint(eLogDebug, "I2PService: ", GetName(), " accepted");
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auto handler = CreateHandler(socket);
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if (handler)
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{
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AddHandler(handler);
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handler->Handle();
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}
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else
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socket->close();
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Accept();
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}
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else
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{
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if (ecode != boost::asio::error::operation_aborted)
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LogPrint (eLogError, "I2PService: ", GetName(), " closing socket on accept because: ", ecode.message ());
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}
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}
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}
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}
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