mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
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277 lines
7.7 KiB
277 lines
7.7 KiB
#include <boost/bind.hpp> |
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#include <boost/lexical_cast.hpp> |
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#include "base64.h" |
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#include "Log.h" |
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#include "Tunnel.h" |
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#include "TransitTunnel.h" |
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#include "Transports.h" |
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#include "NetDb.h" |
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#include "Streaming.h" |
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#include "HTTPServer.h" |
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namespace i2p |
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{ |
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namespace util |
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{ |
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namespace misc_strings |
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{ |
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const char name_value_separator[] = { ':', ' ' }; |
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const char crlf[] = { '\r', '\n' }; |
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} // namespace misc_strings |
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std::vector<boost::asio::const_buffer> HTTPConnection::reply::to_buffers() |
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{ |
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std::vector<boost::asio::const_buffer> buffers; |
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if (headers.size () > 0) |
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{ |
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buffers.push_back (boost::asio::buffer ("HTTP/1.0 200 OK\r\n")); // always OK |
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for (std::size_t i = 0; i < headers.size(); ++i) |
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{ |
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header& h = headers[i]; |
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buffers.push_back(boost::asio::buffer(h.name)); |
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buffers.push_back(boost::asio::buffer(misc_strings::name_value_separator)); |
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buffers.push_back(boost::asio::buffer(h.value)); |
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buffers.push_back(boost::asio::buffer(misc_strings::crlf)); |
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} |
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buffers.push_back(boost::asio::buffer(misc_strings::crlf)); |
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} |
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buffers.push_back(boost::asio::buffer(content)); |
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return buffers; |
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} |
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void HTTPConnection::Terminate () |
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{ |
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m_Socket->close (); |
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delete this; |
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} |
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void HTTPConnection::Receive () |
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{ |
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m_Socket->async_read_some (boost::asio::buffer (m_Buffer, 8192), |
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boost::bind(&HTTPConnection::HandleReceive, this, |
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boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)); |
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} |
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void HTTPConnection::HandleReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred) |
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{ |
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if (!ecode) |
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{ |
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m_Buffer[bytes_transferred] = 0; |
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auto address = ExtractAddress (); |
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if (address.length () > 1) // not just '/' |
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{ |
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std::string uri ("/"), b32; |
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size_t pos = address.find ('/', 1); |
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if (pos == std::string::npos) |
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b32 = address.substr (1); // excluding leading '/' to end of line |
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else |
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{ |
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b32 = address.substr (1, pos - 1); // excluding leading '/' to next '/' |
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uri = address.substr (pos); // rest of line |
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} |
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HandleDestinationRequest (b32, uri); |
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} |
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else |
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HandleRequest (); |
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boost::asio::async_write (*m_Socket, m_Reply.to_buffers(), |
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boost::bind (&HTTPConnection::HandleWrite, this, |
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boost::asio::placeholders::error)); |
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//Receive (); |
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} |
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else if (ecode != boost::asio::error::operation_aborted) |
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Terminate (); |
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} |
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std::string HTTPConnection::ExtractAddress () |
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{ |
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char * get = strstr (m_Buffer, "GET"); |
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if (get) |
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{ |
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char * http = strstr (get, "HTTP"); |
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if (http) |
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return std::string (get + 4, http - get - 5); |
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} |
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return ""; |
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} |
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void HTTPConnection::HandleWrite (const boost::system::error_code& ecode) |
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{ |
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Terminate (); |
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} |
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void HTTPConnection::HandleRequest () |
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{ |
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std::stringstream s; |
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s << "<html>"; |
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FillContent (s); |
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s << "</html>"; |
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m_Reply.content = s.str (); |
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m_Reply.headers.resize(2); |
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m_Reply.headers[0].name = "Content-Length"; |
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m_Reply.headers[0].value = boost::lexical_cast<std::string>(m_Reply.content.size()); |
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m_Reply.headers[1].name = "Content-Type"; |
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m_Reply.headers[1].value = "text/html"; |
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} |
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void HTTPConnection::FillContent (std::stringstream& s) |
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{ |
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s << "<P>Tunnels</P>"; |
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for (auto it: i2p::tunnel::tunnels.GetOutboundTunnels ()) |
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{ |
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it->GetTunnelConfig ()->Print (s); |
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s << " " << (int)it->GetNumSentBytes () << "<BR>"; |
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} |
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for (auto it: i2p::tunnel::tunnels.GetInboundTunnels ()) |
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{ |
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it.second->GetTunnelConfig ()->Print (s); |
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s << " " << (int)it.second->GetNumReceivedBytes () << "<BR>"; |
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} |
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s << "<P>Transit tunnels</P>"; |
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for (auto it: i2p::tunnel::tunnels.GetTransitTunnels ()) |
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{ |
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if (dynamic_cast<i2p::tunnel::TransitTunnelGateway *>(it.second)) |
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s << it.second->GetTunnelID () << "-->"; |
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else if (dynamic_cast<i2p::tunnel::TransitTunnelEndpoint *>(it.second)) |
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s << "-->" << it.second->GetTunnelID (); |
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else |
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s << "-->" << it.second->GetTunnelID () << "-->"; |
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s << " " << it.second->GetNumTransmittedBytes () << "<BR>"; |
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} |
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s << "<P>Transports</P>"; |
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for (auto it: i2p::transports.GetNTCPSessions ()) |
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{ |
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// RouterInfo of incoming connection doesn't have address |
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bool outgoing = it.second->GetRemoteRouterInfo ().GetNTCPAddress (); |
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if (it.second->IsEstablished ()) |
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{ |
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if (outgoing) s << "-->"; |
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s << it.second->GetRemoteRouterInfo ().GetIdentHashAbbreviation () << ": " |
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<< it.second->GetSocket ().remote_endpoint().address ().to_string (); |
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if (!outgoing) s << "-->"; |
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s << "<BR>"; |
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} |
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} |
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s << "<p><a href=\"zmw2cyw2vj7f6obx3msmdvdepdhnw2ctc4okza2zjxlukkdfckhq\">Flibusta</a></p>"; |
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} |
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void HTTPConnection::HandleDestinationRequest (const std::string& b32, const std::string& uri) |
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{ |
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uint8_t destination[32]; |
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if (i2p::data::Base32ToByteStream (b32.c_str (), b32.length (), destination, 32) != 32) |
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{ |
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LogPrint ("Invalid Base32 address ", b32); |
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return; |
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} |
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auto leaseSet = i2p::data::netdb.FindLeaseSet (destination); |
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if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) |
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{ |
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i2p::data::netdb.Subscribe(destination); |
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std::this_thread::sleep_for (std::chrono::seconds(10)); // wait for 10 seconds |
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leaseSet = i2p::data::netdb.FindLeaseSet (destination); |
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if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) // still no LeaseSet |
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{ |
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m_Reply.content = leaseSet ? "<html>Leases expired</html>" : "<html>LeaseSet not found</html>"; |
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m_Reply.headers.resize(2); |
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m_Reply.headers[0].name = "Content-Length"; |
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m_Reply.headers[0].value = boost::lexical_cast<std::string>(m_Reply.content.size()); |
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m_Reply.headers[1].name = "Content-Type"; |
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m_Reply.headers[1].value = "text/html"; |
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return; |
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} |
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} |
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auto s = i2p::stream::CreateStream (*leaseSet); |
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if (s) |
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{ |
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std::string request = "GET " + uri + " HTTP/1.1\n Host:" + b32 + ".b32.i2p\n"; |
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s->Send ((uint8_t *)request.c_str (), request.length (), 10); |
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std::stringstream ss; |
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uint8_t buf[8192]; |
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size_t r = s->Receive (buf, 8192, 30); // 30 seconds |
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if (!r && s->IsEstablished ()) // nothing received but connection is established |
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r = s->Receive (buf, 8192, 30); // wait for another 30 secondd |
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if (r) // we recieved data |
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{ |
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ss << std::string ((char *)buf, r); |
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while (s->IsOpen () && (r = s->Receive (buf, 8192, 30)) > 0) |
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ss << std::string ((char *)buf,r); |
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m_Reply.content = ss.str (); // send "as is" |
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m_Reply.headers.resize(0); // no headers |
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return; |
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} |
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else // nothing received |
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ss << "<html>Not responding</html>"; |
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s->Close (); |
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DeleteStream (s); |
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m_Reply.content = ss.str (); |
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m_Reply.headers.resize(2); |
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m_Reply.headers[0].name = "Content-Length"; |
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m_Reply.headers[0].value = boost::lexical_cast<std::string>(m_Reply.content.size()); |
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m_Reply.headers[1].name = "Content-Type"; |
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m_Reply.headers[1].value = "text/html"; |
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} |
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} |
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HTTPServer::HTTPServer (int port): |
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m_Thread (nullptr), m_Work (m_Service), |
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m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint (boost::asio::ip::tcp::v4(), port)), |
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m_NewSocket (nullptr) |
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{ |
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} |
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HTTPServer::~HTTPServer () |
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{ |
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Stop (); |
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} |
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void HTTPServer::Start () |
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{ |
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m_Thread = new std::thread (std::bind (&HTTPServer::Run, this)); |
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m_Acceptor.listen (); |
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Accept (); |
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} |
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void HTTPServer::Stop () |
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{ |
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m_Acceptor.close(); |
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m_Service.stop (); |
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if (m_Thread) |
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{ |
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m_Thread->join (); |
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delete m_Thread; |
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m_Thread = nullptr; |
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} |
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} |
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void HTTPServer::Run () |
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{ |
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m_Service.run (); |
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} |
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void HTTPServer::Accept () |
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{ |
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m_NewSocket = new boost::asio::ip::tcp::socket (m_Service); |
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m_Acceptor.async_accept (*m_NewSocket, boost::bind (&HTTPServer::HandleAccept, this, |
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boost::asio::placeholders::error)); |
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} |
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void HTTPServer::HandleAccept(const boost::system::error_code& ecode) |
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{ |
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if (!ecode) |
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{ |
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new HTTPConnection (m_NewSocket); |
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Accept (); |
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} |
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} |
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} |
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} |
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