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@ -3,6 +3,13 @@
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#include <boost/lexical_cast.hpp>
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#include <string>
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#include <atomic>
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#include <memory>
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#include <set>
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#include <boost/asio.hpp>
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#include <mutex>
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#include "I2PService.h"
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#include "Destination.h"
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#include "HTTPProxy.h"
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#include "util.h"
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#include "Identity.h"
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@ -13,13 +20,12 @@
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#include "I2PTunnel.h"
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#include "Config.h"
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#include "HTTP.h"
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#include "HTTPServer.h"
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namespace i2p
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{
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namespace proxy
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{
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namespace i2p {
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namespace proxy {
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static const size_t http_buffer_size = 8192;
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class HTTPProxyHandler: public i2p::client::I2PServiceHandler, public std::enable_shared_from_this<HTTPProxyHandler>
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class HTTPReqHandler: public i2p::client::I2PServiceHandler, public std::enable_shared_from_this<HTTPReqHandler>
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{
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private:
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enum state
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@ -36,7 +42,7 @@ namespace proxy
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void HandleSockRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered);
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void Terminate();
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void AsyncSockRead();
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void HTTPRequestFailed(/*std::string message*/);
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void HTTPRequestFailed(const char *message);
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void RedirectToJumpService();
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void ExtractRequest();
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bool IsI2PAddress();
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@ -59,26 +65,26 @@ namespace proxy
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public:
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HTTPProxyHandler(HTTPProxyServer * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock) :
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HTTPReqHandler(HTTPProxy * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock) :
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I2PServiceHandler(parent), m_sock(sock)
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{ EnterState(GET_METHOD); }
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~HTTPProxyHandler() { Terminate(); }
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~HTTPReqHandler() { Terminate(); }
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void Handle () { AsyncSockRead(); }
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};
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void HTTPProxyHandler::AsyncSockRead()
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void HTTPReqHandler::AsyncSockRead()
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{
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LogPrint(eLogDebug, "HTTPProxy: async sock read");
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if(m_sock) {
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m_sock->async_receive(boost::asio::buffer(m_http_buff, http_buffer_size),
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std::bind(&HTTPProxyHandler::HandleSockRecv, shared_from_this(),
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std::bind(&HTTPReqHandler::HandleSockRecv, shared_from_this(),
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std::placeholders::_1, std::placeholders::_2));
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} else {
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LogPrint(eLogError, "HTTPProxy: no socket for read");
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}
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}
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void HTTPProxyHandler::Terminate() {
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void HTTPReqHandler::Terminate() {
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if (Kill()) return;
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if (m_sock)
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{
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@ -91,30 +97,34 @@ namespace proxy
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/* All hope is lost beyond this point */
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//TODO: handle this apropriately
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void HTTPProxyHandler::HTTPRequestFailed(/*HTTPProxyHandler::errTypes error*/)
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{
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static std::string response = "HTTP/1.0 500 Internal Server Error\r\nContent-type: text/html\r\nContent-length: 0\r\n\r\n";
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boost::asio::async_write(*m_sock, boost::asio::buffer(response,response.size()),
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std::bind(&HTTPProxyHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1));
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void HTTPReqHandler::HTTPRequestFailed(const char *message)
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{
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std::size_t size = std::strlen(message);
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std::stringstream ss;
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ss << "HTTP/1.0 500 Internal Server Error\r\n"
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<< "Content-Type: text/plain\r\n";
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ss << "Content-Length: " << std::to_string(size + 2) << "\r\n"
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<< "\r\n"; /* end of headers */
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ss << message << "\r\n";
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std::string response = ss.str();
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boost::asio::async_write(*m_sock, boost::asio::buffer(response),
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std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1));
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}
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void HTTPProxyHandler::RedirectToJumpService(/*HTTPProxyHandler::errTypes error*/)
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void HTTPReqHandler::RedirectToJumpService(/*HTTPReqHandler::errTypes error*/)
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{
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std::stringstream response;
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std::string httpAddr; i2p::config::GetOption("http.address", httpAddr);
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uint16_t httpPort; i2p::config::GetOption("http.port", httpPort);
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response << "HTTP/1.1 302 Found\r\nLocation: http://" << httpAddr << ":" << httpPort << "/?page=jumpservices&address=" << m_address << "\r\n\r\n";
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boost::asio::async_write(*m_sock, boost::asio::buffer(response.str (),response.str ().length ()),
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std::bind(&HTTPProxyHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1));
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std::stringstream ss;
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i2p::http::ShowJumpServices (ss, m_address);
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boost::asio::async_write(*m_sock, boost::asio::buffer(ss.str ()),
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std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1));
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}
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void HTTPProxyHandler::EnterState(HTTPProxyHandler::state nstate)
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void HTTPReqHandler::EnterState(HTTPReqHandler::state nstate)
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{
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m_state = nstate;
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}
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void HTTPProxyHandler::ExtractRequest()
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void HTTPReqHandler::ExtractRequest()
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{
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LogPrint(eLogDebug, "HTTPProxy: request: ", m_method, " ", m_url);
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i2p::http::URL url;
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@ -127,18 +137,18 @@ namespace proxy
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LogPrint(eLogDebug, "HTTPProxy: server: ", m_address, ", port: ", m_port, ", path: ", m_path);
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}
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bool HTTPProxyHandler::ValidateHTTPRequest()
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bool HTTPReqHandler::ValidateHTTPRequest()
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{
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if ( m_version != "HTTP/1.0" && m_version != "HTTP/1.1" )
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{
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LogPrint(eLogError, "HTTPProxy: unsupported version: ", m_version);
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HTTPRequestFailed(); //TODO: send right stuff
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HTTPRequestFailed("unsupported HTTP version");
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return false;
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}
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return true;
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}
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void HTTPProxyHandler::HandleJumpServices()
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void HTTPReqHandler::HandleJumpServices()
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{
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static const char * helpermark1 = "?i2paddresshelper=";
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static const char * helpermark2 = "&i2paddresshelper=";
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@ -170,7 +180,7 @@ namespace proxy
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m_path.erase(addressHelperPos);
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}
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bool HTTPProxyHandler::IsI2PAddress()
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bool HTTPReqHandler::IsI2PAddress()
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{
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auto pos = m_address.rfind (".i2p");
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if (pos != std::string::npos && (pos+4) == m_address.length ())
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@ -180,7 +190,7 @@ namespace proxy
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return false;
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}
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bool HTTPProxyHandler::CreateHTTPRequest(uint8_t *http_buff, std::size_t len)
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bool HTTPReqHandler::CreateHTTPRequest(uint8_t *http_buff, std::size_t len)
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{
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ExtractRequest(); //TODO: parse earlier
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if (!ValidateHTTPRequest()) return false;
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@ -235,7 +245,7 @@ namespace proxy
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return true;
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}
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bool HTTPProxyHandler::HandleData(uint8_t *http_buff, std::size_t len)
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bool HTTPReqHandler::HandleData(uint8_t *http_buff, std::size_t len)
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{
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while (len > 0)
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{
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@ -269,13 +279,13 @@ namespace proxy
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case '\n': EnterState(DONE); break;
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default:
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LogPrint(eLogError, "HTTPProxy: rejected invalid request ending with: ", ((int)*http_buff));
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HTTPRequestFailed(); //TODO: add correct code
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HTTPRequestFailed("rejected invalid request");
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return false;
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}
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break;
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default:
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LogPrint(eLogError, "HTTPProxy: invalid state: ", m_state);
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HTTPRequestFailed(); //TODO: add correct code 500
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HTTPRequestFailed("invalid parser state");
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return false;
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}
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http_buff++;
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@ -286,7 +296,7 @@ namespace proxy
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return true;
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}
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void HTTPProxyHandler::HandleSockRecv(const boost::system::error_code & ecode, std::size_t len)
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void HTTPReqHandler::HandleSockRecv(const boost::system::error_code & ecode, std::size_t len)
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{
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LogPrint(eLogDebug, "HTTPProxy: sock recv: ", len, " bytes");
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if(ecode)
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@ -301,7 +311,7 @@ namespace proxy
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if (m_state == DONE)
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{
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LogPrint(eLogDebug, "HTTPProxy: requested: ", m_url);
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GetOwner()->CreateStream (std::bind (&HTTPProxyHandler::HandleStreamRequestComplete,
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GetOwner()->CreateStream (std::bind (&HTTPReqHandler::HandleStreamRequestComplete,
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shared_from_this(), std::placeholders::_1), m_address, m_port);
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}
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else
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@ -310,14 +320,14 @@ namespace proxy
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}
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void HTTPProxyHandler::SentHTTPFailed(const boost::system::error_code & ecode)
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void HTTPReqHandler::SentHTTPFailed(const boost::system::error_code & ecode)
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{
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if (ecode)
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LogPrint (eLogError, "HTTPProxy: Closing socket after sending failure because: ", ecode.message ());
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Terminate();
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}
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void HTTPProxyHandler::HandleStreamRequestComplete (std::shared_ptr<i2p::stream::Stream> stream)
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void HTTPReqHandler::HandleStreamRequestComplete (std::shared_ptr<i2p::stream::Stream> stream)
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{
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if (stream)
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{
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@ -331,19 +341,18 @@ namespace proxy
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else
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{
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LogPrint (eLogError, "HTTPProxy: error when creating the stream, check the previous warnings for more info");
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HTTPRequestFailed(); // TODO: Send correct error message host unreachable
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HTTPRequestFailed("error when creating the stream, check logs");
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}
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}
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HTTPProxyServer::HTTPProxyServer(const std::string& address, int port, std::shared_ptr<i2p::client::ClientDestination> localDestination):
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HTTPProxy::HTTPProxy(const std::string& address, int port, std::shared_ptr<i2p::client::ClientDestination> localDestination):
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TCPIPAcceptor(address, port, localDestination ? localDestination : i2p::client::context.GetSharedLocalDestination ())
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{
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}
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std::shared_ptr<i2p::client::I2PServiceHandler> HTTPProxyServer::CreateHandler(std::shared_ptr<boost::asio::ip::tcp::socket> socket)
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std::shared_ptr<i2p::client::I2PServiceHandler> HTTPProxy::CreateHandler(std::shared_ptr<boost::asio::ip::tcp::socket> socket)
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{
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return std::make_shared<HTTPProxyHandler> (this, socket);
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}
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}
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return std::make_shared<HTTPReqHandler> (this, socket);
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}
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} // http
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} // i2p
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