Merge pull request #978 from majestrate/http-i2p-outproxy

support i2p outproxy in httpproxy

libi2pd/Destination.cpp

@@ -1,5 +1,6 @@
 #include <algorithm>
 #include <cassert>
+#include <string>
 #include "Crypto.h"
 #include "Log.h"
 #include "FS.h"

libi2pd/HTTP.cpp

@@ -29,7 +29,7 @@ namespace http {
   inline bool is_http_method(const std::string & str) {
     return std::find(HTTP_METHODS.begin(), HTTP_METHODS.end(), str) != std::end(HTTP_METHODS);
   }
-  
+
   void strsplit(const std::string & line, std::vector<std::string> &tokens, char delim, std::size_t limit = 0) {
     std::size_t count = 0;
     std::stringstream ss(line);
@@ -195,6 +195,11 @@ namespace http {
     return out;
   }
 
+	bool URL::is_i2p() const
+	{
+		return host.rfind(".i2p") == ( host.size() - 4 );
+	}
+
   void HTTPMsg::add_header(const char *name, std::string & value, bool replace) {
     add_header(name, value.c_str(), replace);
   }

libi2pd/HTTP.h

@@ -56,6 +56,11 @@ namespace http
      * @note Returns relative url if schema if empty, absolute url otherwise
      */
     std::string to_string ();
+
+    /**
+     * @brief return true if the host is inside i2p
+     */
+    bool is_i2p() const;
   };
 
   struct HTTPMsg 
@@ -89,7 +94,7 @@ namespace http
 
     /** @brief Serialize HTTP request to string */
     std::string to_string();
-	void write(std::ostream & o);
+		void write(std::ostream & o);
 
 	void AddHeader (const std::string& name, const std::string& value);
 	void UpdateHeader (const std::string& name, const std::string& value);  
@@ -131,7 +136,7 @@ namespace http
     std::string to_string();
 
 		void write(std::ostream & o);
-		
+
     /** @brief Checks that response declared as chunked data */
     bool is_chunked() const ;
 

libi2pd_client/ClientContext.cpp

@@ -54,6 +54,7 @@ namespace client
 			std::string httpProxyAddr; i2p::config::GetOption("httpproxy.address", httpProxyAddr);
 			uint16_t    httpProxyPort; i2p::config::GetOption("httpproxy.port",    httpProxyPort);
 			i2p::data::SigningKeyType sigType; i2p::config::GetOption("httpproxy.signaturetype",  sigType);
+			std::string httpOutProxyURL; i2p::config::GetOption("httpproxy.outproxy",     httpOutProxyURL);
 			LogPrint(eLogInfo, "Clients: starting HTTP Proxy at ", httpProxyAddr, ":", httpProxyPort);
 			if (httpProxyKeys.length () > 0)
 			{
@@ -70,7 +71,7 @@ namespace client
 			}
 			try
 			{
-			  m_HttpProxy = new i2p::proxy::HTTPProxy(httpProxyAddr, httpProxyPort, localDestination);
+			  m_HttpProxy = new i2p::proxy::HTTPProxy(httpProxyAddr, httpProxyPort, httpOutProxyURL, localDestination);
 			  m_HttpProxy->Start();
 			}
 			catch (std::exception& e)
@@ -536,7 +537,8 @@ namespace client
 						else if (type == I2P_TUNNELS_SECTION_TYPE_HTTPPROXY)
 						{
 							// http proxy
-							clientTunnel = new i2p::proxy::HTTPProxy(address, port, localDestination);
+							std::string outproxy = section.second.get("outproxy", "");
+							clientTunnel = new i2p::proxy::HTTPProxy(address, port, outproxy, localDestination);
 							clientEndpoint = ((i2p::proxy::HTTPProxy*)clientTunnel)->GetLocalEndpoint ();
 						}
 						else if (type == I2P_TUNNELS_SECTION_TYPE_WEBSOCKS)

libi2pd_client/HTTPProxy.cpp

@@ -86,6 +86,7 @@ namespace proxy {
 			std::shared_ptr<boost::asio::ip::tcp::socket> m_sock;
 		std::shared_ptr<boost::asio::ip::tcp::socket> m_proxysock;
 		boost::asio::ip::tcp::resolver m_proxy_resolver;
+		std::string m_OutproxyUrl;
 		i2p::http::URL m_ProxyURL;
 		i2p::http::URL m_RequestURL;
 		uint8_t m_socks_buf[255+8]; // for socks request/response
@@ -99,7 +100,8 @@ namespace proxy {
 			HTTPReqHandler(HTTPProxy * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock) :
 				I2PServiceHandler(parent), m_sock(sock),
 				m_proxysock(std::make_shared<boost::asio::ip::tcp::socket>(parent->GetService())),
-				m_proxy_resolver(parent->GetService()) {}
+				m_proxy_resolver(parent->GetService()),
+				m_OutproxyUrl(parent->GetOutproxyURL()) {}
 			~HTTPReqHandler() { Terminate(); }
 			void Handle () { AsyncSockRead(); } /* overload */
 	};
@@ -324,10 +326,9 @@ namespace proxy {
 				return true; /* request processed */
 			}
 		} else {
-			std::string outproxyUrl; i2p::config::GetOption("httpproxy.outproxy", outproxyUrl);
-			if(outproxyUrl.size()) {
-				LogPrint (eLogDebug, "HTTPProxy: use outproxy ", outproxyUrl);
-				if(m_ProxyURL.parse(outproxyUrl))
+			if(m_OutproxyUrl.size()) {
+				LogPrint (eLogDebug, "HTTPProxy: use outproxy ", m_OutproxyUrl);
+				if(m_ProxyURL.parse(m_OutproxyUrl))
 					ForwardToUpstreamProxy();
 				else
 					GenericProxyError("Outproxy failure", "bad outproxy settings");
@@ -379,10 +380,19 @@ namespace proxy {
 		if (m_ProxyURL.schema == "" || m_ProxyURL.schema == "http") {
 			// handle upstream http proxy
 			if (!m_ProxyURL.port) m_ProxyURL.port = 80;
-			boost::asio::ip::tcp::resolver::query q(m_ProxyURL.host, std::to_string(m_ProxyURL.port));
-			m_proxy_resolver.async_resolve(q, std::bind(&HTTPReqHandler::HandleUpstreamProxyResolved, this, std::placeholders::_1, std::placeholders::_2, [&](boost::asio::ip::tcp::endpoint ep) {
-						m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamHTTPProxyConnect, this, std::placeholders::_1));
-			}));
+			if (m_ProxyURL.is_i2p())
+			{
+				m_send_buf = m_recv_buf;
+				GetOwner()->CreateStream (std::bind (&HTTPReqHandler::HandleStreamRequestComplete,
+					shared_from_this(), std::placeholders::_1), m_ProxyURL.host, m_ProxyURL.port);
+			}
+			else
+			{
+				boost::asio::ip::tcp::resolver::query q(m_ProxyURL.host, std::to_string(m_ProxyURL.port));
+				m_proxy_resolver.async_resolve(q, std::bind(&HTTPReqHandler::HandleUpstreamProxyResolved, this, std::placeholders::_1, std::placeholders::_2, [&](boost::asio::ip::tcp::endpoint ep) {
+					m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamHTTPProxyConnect, this, std::placeholders::_1));
+				}));
+			}
 		} else if (m_ProxyURL.schema == "socks") {
 			// handle upstream socks proxy
 			if (!m_ProxyURL.port) m_ProxyURL.port = 9050; // default to tor default if not specified
@@ -572,8 +582,9 @@ namespace proxy {
 		Done (shared_from_this());
 	}
 
-	HTTPProxy::HTTPProxy(const std::string& address, int port, std::shared_ptr<i2p::client::ClientDestination> localDestination):
-		TCPIPAcceptor(address, port, localDestination ? localDestination : i2p::client::context.GetSharedLocalDestination ())
+	HTTPProxy::HTTPProxy(const std::string& address, int port, const std::string & outproxy, std::shared_ptr<i2p::client::ClientDestination> localDestination):
+		TCPIPAcceptor(address, port, localDestination ? localDestination : i2p::client::context.GetSharedLocalDestination ()),
+		m_OutproxyUrl(outproxy)
 	{
 	}
 

libi2pd_client/HTTPProxy.h

@@ -6,14 +6,20 @@ namespace proxy {
 	class HTTPProxy: public i2p::client::TCPIPAcceptor
 	{
 		public:
-
-			HTTPProxy(const std::string& address, int port, std::shared_ptr<i2p::client::ClientDestination> localDestination = nullptr);
+			HTTPProxy(const std::string& address, int port, const std::string & outproxy, std::shared_ptr<i2p::client::ClientDestination> localDestination);
+			HTTPProxy(const std::string& address, int port, std::shared_ptr<i2p::client::ClientDestination> localDestination = nullptr) :
+				HTTPProxy(address, port, "", localDestination) {} ;
 			~HTTPProxy() {};
 
+			std::string GetOutproxyURL() const { return m_OutproxyUrl; }
+
 		protected:
 			// Implements TCPIPAcceptor
 			std::shared_ptr<i2p::client::I2PServiceHandler> CreateHandler(std::shared_ptr<boost::asio::ip::tcp::socket> socket);
 			const char* GetName() { return "HTTP Proxy"; }
+
+		private:
+			std::string m_OutproxyUrl;
 	};
 } // http
 } // i2p