mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2025-03-10 11:28:27 +01:00
correct proxy buffers
This commit is contained in:
orignal
parent
a59a8f62ca
commit
2d3fad2cdb
1 changed files with 226 additions and 224 deletions
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@ -377,78 +377,6 @@ namespace transport
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}
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}
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}
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}
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void NTCP2Server::AfterSocksHandshake(std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer, const std::string & host, uint16_t port, RemoteAddressType addrtype)
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{
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// build request
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size_t sz = 0;
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uint8_t buff[256];
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uint8_t readbuff[256];
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buff[0] = 0x05;
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buff[1] = 0x01;
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buff[2] = 0x00;
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if(addrtype == eIP4Address)
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{
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buff[3] = 0x01;
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auto addr = boost::asio::ip::address::from_string(host).to_v4();
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auto addrbytes = addr.to_bytes();
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auto addrsize = addrbytes.size();
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memcpy(buff+4, addrbytes.data(), addrsize);
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}
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else if (addrtype == eIP6Address)
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{
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buff[3] = 0x04;
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auto addr = boost::asio::ip::address::from_string(host).to_v6();
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auto addrbytes = addr.to_bytes();
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auto addrsize = addrbytes.size();
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memcpy(buff+4, addrbytes.data(), addrsize);
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}
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else if (addrtype == eHostname)
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{
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buff[3] = 0x03;
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size_t addrsize = host.size();
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sz = addrsize + 1 + 4;
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if (2 + sz > sizeof(buff))
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{
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// too big
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return;
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}
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buff[4] = (uint8_t) addrsize;
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memcpy(buff+5, host.c_str(), addrsize);
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}
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htobe16buf(buff+sz, port);
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sz += 2;
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boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff, sz), boost::asio::transfer_all(), [=](const boost::system::error_code & ec, std::size_t written) {
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if(ec)
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{
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LogPrint(eLogError, "NTCP2: failed to write handshake to socks proxy ", ec.message());
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return;
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}
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});
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boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(readbuff, 10), [=](const boost::system::error_code & e, std::size_t transferred) {
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if(e)
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{
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LogPrint(eLogError, "NTCP2: socks proxy read error ", e.message());
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}
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else if(transferred == sz)
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{
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if( readbuff[1] == 0x00)
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{
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timer->cancel();
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conn->ClientLogin();
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return;
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}
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}
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if(!e)
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i2p::data::netdb.SetUnreachable (conn->GetRemoteIdentity ()->GetIdentHash (), true);
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timer->cancel();
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conn->Terminate();
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});
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}
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NTCP2Session::~NTCP2Session ()
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NTCP2Session::~NTCP2Session ()
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{
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{
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delete[] m_NextReceivedBuffer;
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delete[] m_NextReceivedBuffer;
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@ -1168,158 +1096,6 @@ namespace transport
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EncryptAndSendNextBuffer (payloadLen);
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EncryptAndSendNextBuffer (payloadLen);
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}
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}
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void NTCP2Server::UseProxy(ProxyType proxytype, const std::string & addr, uint16_t port)
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{
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m_ProxyType = proxytype;
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m_ProxyAddress = addr;
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m_ProxyPort = port;
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}
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void NTCP2Server::HandleProxyConnect(const boost::system::error_code& ecode, std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer, const std::string & host, uint16_t port, RemoteAddressType addrtype)
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{
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if (ecode)
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{
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LogPrint(eLogWarning, "NTCP2: failed to connect to proxy ", ecode.message());
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timer->cancel();
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conn->Terminate();
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return;
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}
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switch (m_ProxyType)
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{
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case eSocksProxy:
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{
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// TODO: support username/password auth etc
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static const uint8_t buff[3] = {0x05, 0x01, 0x00};
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boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff, 3), boost::asio::transfer_all(),
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[] (const boost::system::error_code & ec, std::size_t transferred)
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{
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(void) transferred;
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if(ec)
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{
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LogPrint(eLogWarning, "NTCP2: socks5 write error ", ec.message());
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}
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});
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auto readbuff = std::make_shared<std::array<uint8_t, 2> >();
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boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(*readbuff, 2),
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[this, readbuff, timer, conn, host, port, addrtype](const boost::system::error_code & ec, std::size_t transferred)
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{
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LogPrint(eLogError, "NTCP2: ", transferred);
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if(ec)
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{
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LogPrint(eLogError, "NTCP2: socks5 read error ", ec.message());
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timer->cancel();
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conn->Terminate();
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return;
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}
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else if(transferred == 2)
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{
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if((*readbuff)[1] == 0xba)
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{
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AfterSocksHandshake(conn, timer, host, port, addrtype);
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return;
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}
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else if ((*readbuff)[1] == 0xff)
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{
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LogPrint(eLogError, "NTCP2: socks5 proxy rejected authentication");
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timer->cancel();
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conn->Terminate();
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return;
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}
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LogPrint(eLogError, "NTCP2:", (*readbuff)[1]);
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}
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LogPrint(eLogError, "NTCP2: socks5 server gave invalid response");
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timer->cancel();
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conn->Terminate();
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});
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break;
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}
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case eHTTPProxy:
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{
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i2p::http::HTTPReq req;
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req.method = "CONNECT";
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req.version ="HTTP/1.1";
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if(addrtype == eIP6Address)
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req.uri = "[" + host + "]:" + std::to_string(port);
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else
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req.uri = host + ":" + std::to_string(port);
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boost::asio::streambuf writebuff;
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std::ostream out(&writebuff);
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out << req.to_string();
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boost::asio::async_write(conn->GetSocket(), writebuff.data(), boost::asio::transfer_all(),
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[](const boost::system::error_code & ec, std::size_t transferred)
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{
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(void) transferred;
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if(ec)
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LogPrint(eLogError, "NTCP2: http proxy write error ", ec.message());
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});
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boost::asio::streambuf * readbuff = new boost::asio::streambuf;
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boost::asio::async_read_until(conn->GetSocket(), *readbuff, "\r\n\r\n",
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[this, readbuff, timer, conn] (const boost::system::error_code & ec, std::size_t transferred)
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{
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if(ec)
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{
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LogPrint(eLogError, "NTCP2: http proxy read error ", ec.message());
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timer->cancel();
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conn->Terminate();
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}
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else
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{
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readbuff->commit(transferred);
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i2p::http::HTTPRes res;
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if(res.parse(boost::asio::buffer_cast<const char*>(readbuff->data()), readbuff->size()) > 0)
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{
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if(res.code == 200)
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{
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timer->cancel();
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conn->ClientLogin();
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delete readbuff;
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return;
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}
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else
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LogPrint(eLogError, "NTCP2: http proxy rejected request ", res.code);
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}
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else
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LogPrint(eLogError, "NTCP2: http proxy gave malformed response");
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timer->cancel();
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conn->Terminate();
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delete readbuff;
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}
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});
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break;
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}
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default:
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LogPrint(eLogError, "NTCP2: unknown proxy type, invalid state");
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}
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}
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void NTCP2Server::ConnectWithProxy (const std::string& host, uint16_t port, RemoteAddressType addrtype, std::shared_ptr<NTCP2Session> conn)
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{
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if(!m_ProxyEndpoint) return
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GetService().post([=]() {
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if (this->AddNTCP2Session (conn))
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{
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auto timer = std::make_shared<boost::asio::deadline_timer>(GetService());
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auto timeout = NTCP_CONNECT_TIMEOUT * 5;
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conn->SetTerminationTimeout(timeout * 2);
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timer->expires_from_now (boost::posix_time::seconds(timeout));
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timer->async_wait ([conn, timeout](const boost::system::error_code& ecode)
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{
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if (ecode != boost::asio::error::operation_aborted)
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{
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LogPrint (eLogInfo, "NTCP2: Not connected in ", timeout, " seconds");
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i2p::data::netdb.SetUnreachable (conn->GetRemoteIdentity ()->GetIdentHash (), true);
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conn->Terminate ();
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}
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});
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conn->GetSocket ().async_connect (*m_ProxyEndpoint, std::bind (&NTCP2Server::HandleProxyConnect, this, std::placeholders::_1, conn, timer, host, port, addrtype));
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}
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});
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}
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void NTCP2Session::SendTermination (NTCP2TerminationReason reason)
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void NTCP2Session::SendTermination (NTCP2TerminationReason reason)
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{
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{
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if (!m_SendKey || !m_SendSipKey) return;
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if (!m_SendKey || !m_SendSipKey) return;
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@ -1640,5 +1416,231 @@ namespace transport
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ScheduleTermination ();
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ScheduleTermination ();
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}
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}
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}
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}
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void NTCP2Server::UseProxy(ProxyType proxytype, const std::string & addr, uint16_t port)
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{
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m_ProxyType = proxytype;
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m_ProxyAddress = addr;
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m_ProxyPort = port;
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}
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void NTCP2Server::HandleProxyConnect(const boost::system::error_code& ecode, std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer, const std::string & host, uint16_t port, RemoteAddressType addrtype)
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{
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if (ecode)
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{
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LogPrint(eLogWarning, "NTCP2: failed to connect to proxy ", ecode.message());
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timer->cancel();
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conn->Terminate();
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return;
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}
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switch (m_ProxyType)
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{
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case eSocksProxy:
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{
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// TODO: support username/password auth etc
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static const uint8_t buff[3] = {0x05, 0x01, 0x00};
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boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff, 3), boost::asio::transfer_all(),
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[] (const boost::system::error_code & ec, std::size_t transferred)
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{
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(void) transferred;
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if(ec)
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{
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LogPrint(eLogWarning, "NTCP2: socks5 write error ", ec.message());
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}
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});
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auto readbuff = std::make_shared<std::vector<uint8_t> >(2);
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boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(readbuff->data (), 2),
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[this, readbuff, timer, conn, host, port, addrtype](const boost::system::error_code & ec, std::size_t transferred)
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{
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if(ec)
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{
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LogPrint(eLogError, "NTCP2: socks5 read error ", ec.message());
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timer->cancel();
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conn->Terminate();
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return;
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}
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else if(transferred == 2)
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{
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if((*readbuff)[1] == 0x00)
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{
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AfterSocksHandshake(conn, timer, host, port, addrtype);
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return;
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}
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else if ((*readbuff)[1] == 0xff)
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{
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LogPrint(eLogError, "NTCP2: socks5 proxy rejected authentication");
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timer->cancel();
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conn->Terminate();
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return;
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}
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LogPrint(eLogError, "NTCP2:", (int)(*readbuff)[1]);
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}
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LogPrint(eLogError, "NTCP2: socks5 server gave invalid response");
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timer->cancel();
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conn->Terminate();
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});
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break;
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}
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case eHTTPProxy:
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{
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i2p::http::HTTPReq req;
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req.method = "CONNECT";
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req.version ="HTTP/1.1";
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if(addrtype == eIP6Address)
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req.uri = "[" + host + "]:" + std::to_string(port);
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else
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req.uri = host + ":" + std::to_string(port);
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boost::asio::streambuf writebuff;
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std::ostream out(&writebuff);
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out << req.to_string();
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boost::asio::async_write(conn->GetSocket(), writebuff.data(), boost::asio::transfer_all(),
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[](const boost::system::error_code & ec, std::size_t transferred)
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{
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(void) transferred;
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if(ec)
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LogPrint(eLogError, "NTCP2: http proxy write error ", ec.message());
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});
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boost::asio::streambuf * readbuff = new boost::asio::streambuf;
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boost::asio::async_read_until(conn->GetSocket(), *readbuff, "\r\n\r\n",
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[this, readbuff, timer, conn] (const boost::system::error_code & ec, std::size_t transferred)
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{
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if(ec)
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{
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LogPrint(eLogError, "NTCP2: http proxy read error ", ec.message());
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timer->cancel();
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conn->Terminate();
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}
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else
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{
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readbuff->commit(transferred);
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i2p::http::HTTPRes res;
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if(res.parse(boost::asio::buffer_cast<const char*>(readbuff->data()), readbuff->size()) > 0)
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{
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if(res.code == 200)
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{
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timer->cancel();
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conn->ClientLogin();
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delete readbuff;
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return;
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}
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else
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LogPrint(eLogError, "NTCP2: http proxy rejected request ", res.code);
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}
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else
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LogPrint(eLogError, "NTCP2: http proxy gave malformed response");
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timer->cancel();
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conn->Terminate();
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delete readbuff;
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}
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});
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break;
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}
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default:
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LogPrint(eLogError, "NTCP2: unknown proxy type, invalid state");
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}
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}
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void NTCP2Server::ConnectWithProxy (const std::string& host, uint16_t port, RemoteAddressType addrtype, std::shared_ptr<NTCP2Session> conn)
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{
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if(!m_ProxyEndpoint) return;
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GetService().post([this, host, port, addrtype, conn]() {
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if (this->AddNTCP2Session (conn))
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{
|
||||||
|
|
||||||
|
auto timer = std::make_shared<boost::asio::deadline_timer>(GetService());
|
||||||
|
auto timeout = NTCP_CONNECT_TIMEOUT * 5;
|
||||||
|
conn->SetTerminationTimeout(timeout * 2);
|
||||||
|
timer->expires_from_now (boost::posix_time::seconds(timeout));
|
||||||
|
timer->async_wait ([conn, timeout](const boost::system::error_code& ecode)
|
||||||
|
{
|
||||||
|
if (ecode != boost::asio::error::operation_aborted)
|
||||||
|
{
|
||||||
|
LogPrint (eLogInfo, "NTCP2: Not connected in ", timeout, " seconds");
|
||||||
|
i2p::data::netdb.SetUnreachable (conn->GetRemoteIdentity ()->GetIdentHash (), true);
|
||||||
|
conn->Terminate ();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
conn->GetSocket ().async_connect (*m_ProxyEndpoint, std::bind (&NTCP2Server::HandleProxyConnect, this, std::placeholders::_1, conn, timer, host, port, addrtype));
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
void NTCP2Server::AfterSocksHandshake(std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer, const std::string & host, uint16_t port, RemoteAddressType addrtype)
|
||||||
|
{
|
||||||
|
// build request
|
||||||
|
size_t sz = 0;
|
||||||
|
auto buff = std::make_shared<std::vector<int8_t> >(256);
|
||||||
|
auto readbuff = std::make_shared<std::vector<int8_t> >(256);
|
||||||
|
(*buff)[0] = 0x05;
|
||||||
|
(*buff)[1] = 0x01;
|
||||||
|
(*buff)[2] = 0x00;
|
||||||
|
|
||||||
|
if(addrtype == eIP4Address)
|
||||||
|
{
|
||||||
|
(*buff)[3] = 0x01;
|
||||||
|
auto addr = boost::asio::ip::address::from_string(host).to_v4();
|
||||||
|
auto addrbytes = addr.to_bytes();
|
||||||
|
auto addrsize = addrbytes.size();
|
||||||
|
memcpy(buff->data () + 4, addrbytes.data(), addrsize);
|
||||||
|
}
|
||||||
|
else if (addrtype == eIP6Address)
|
||||||
|
{
|
||||||
|
(*buff)[3] = 0x04;
|
||||||
|
auto addr = boost::asio::ip::address::from_string(host).to_v6();
|
||||||
|
auto addrbytes = addr.to_bytes();
|
||||||
|
auto addrsize = addrbytes.size();
|
||||||
|
memcpy(buff->data () + 4, addrbytes.data(), addrsize);
|
||||||
|
}
|
||||||
|
else if (addrtype == eHostname)
|
||||||
|
{
|
||||||
|
(*buff)[3] = 0x03;
|
||||||
|
size_t addrsize = host.size();
|
||||||
|
sz = addrsize + 1 + 4;
|
||||||
|
if (2 + sz > buff->size ())
|
||||||
|
{
|
||||||
|
// too big
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
(*buff)[4] = (uint8_t) addrsize;
|
||||||
|
memcpy(buff->data() + 5, host.c_str(), addrsize);
|
||||||
|
}
|
||||||
|
htobe16buf(buff->data () + sz, port);
|
||||||
|
sz += 2;
|
||||||
|
boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff->data (), sz), boost::asio::transfer_all(),
|
||||||
|
[](const boost::system::error_code & ec, std::size_t written)
|
||||||
|
{
|
||||||
|
if(ec)
|
||||||
|
{
|
||||||
|
LogPrint(eLogError, "NTCP2: failed to write handshake to socks proxy ", ec.message());
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(readbuff->data (), 10),
|
||||||
|
[timer, conn, sz, readbuff](const boost::system::error_code & e, std::size_t transferred)
|
||||||
|
{
|
||||||
|
if(e)
|
||||||
|
{
|
||||||
|
LogPrint(eLogError, "NTCP2: socks proxy read error ", e.message());
|
||||||
|
}
|
||||||
|
else if(transferred == sz)
|
||||||
|
{
|
||||||
|
if((*readbuff)[1] == 0x00)
|
||||||
|
{
|
||||||
|
timer->cancel();
|
||||||
|
conn->ClientLogin();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if(!e)
|
||||||
|
i2p::data::netdb.SetUnreachable (conn->GetRemoteIdentity ()->GetIdentHash (), true);
|
||||||
|
timer->cancel();
|
||||||
|
conn->Terminate();
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue