/* * Copyright (c) 2013-2023, The PurpleI2P Project * * This file is part of Purple i2pd project and licensed under BSD3 * * See full license text in LICENSE file at top of project tree */ #include #include #include #include #include #include #include #include #include #include "I2PService.h" #include "Destination.h" #include "HTTPProxy.h" #include "util.h" #include "Identity.h" #include "Streaming.h" #include "Destination.h" #include "ClientContext.h" #include "I2PEndian.h" #include "I2PTunnel.h" #include "Config.h" #include "HTTP.h" #include "I18N.h" namespace i2p { namespace proxy { static const std::vector jumporder = { "reg.i2p", "stats.i2p", "identiguy.i2p", "notbob.i2p" }; static const std::map jumpservices = { { "reg.i2p", "http://shx5vqsw7usdaunyzr2qmes2fq37oumybpudrd4jjj4e4vk4uusa.b32.i2p/jump/" }, { "identiguy.i2p", "http://3mzmrus2oron5fxptw7hw2puho3bnqmw2hqy7nw64dsrrjwdilva.b32.i2p/cgi-bin/query?hostname=" }, { "stats.i2p", "http://7tbay5p4kzeekxvyvbf6v7eauazemsnnl2aoyqhg5jzpr5eke7tq.b32.i2p/cgi-bin/jump.cgi?a=" }, { "notbob.i2p", "http://nytzrhrjjfsutowojvxi7hphesskpqqr65wpistz6wa7cpajhp7a.b32.i2p/cgi-bin/jump.cgi?q=" } }; static const char *pageHead = "\r\n" " \r\n" " I2Pd HTTP proxy\r\n" " \r\n" "\r\n" ; bool str_rmatch(std::string & str, const char *suffix) { auto pos = str.rfind (suffix); if (pos == std::string::npos) return false; /* not found */ if (str.length() == (pos + std::strlen(suffix))) return true; /* match */ return false; } class HTTPReqHandler: public i2p::client::I2PServiceHandler, public std::enable_shared_from_this { private: bool HandleRequest(); void HandleSockRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered); void Terminate(); void AsyncSockRead(); bool ExtractAddressHelper(i2p::http::URL & url, std::string & b64, bool & confirm); void SanitizeHTTPRequest(i2p::http::HTTPReq & req); void SentHTTPFailed(const boost::system::error_code & ecode); void HandleStreamRequestComplete (std::shared_ptr stream); /* error helpers */ void GenericProxyError(const std::string& title, const std::string& description); void GenericProxyInfo(const std::string& title, const std::string& description); void HostNotFound(std::string& host); void SendProxyError(std::string& content); void SendRedirect(std::string& address); void ForwardToUpstreamProxy(); void HandleUpstreamHTTPProxyConnect(const boost::system::error_code & ec); void HandleUpstreamSocksProxyConnect(const boost::system::error_code & ec); void HTTPConnect(const std::string & host, uint16_t port); void HandleHTTPConnectStreamRequestComplete(std::shared_ptr stream); void HandleSocksProxySendHandshake(const boost::system::error_code & ec, std::size_t bytes_transfered); void HandleSocksProxyReply(const boost::system::error_code & ec, std::size_t bytes_transfered); typedef std::function ProxyResolvedHandler; void HandleUpstreamProxyResolved(const boost::system::error_code & ecode, boost::asio::ip::tcp::resolver::iterator itr, ProxyResolvedHandler handler); void SocksProxySuccess(); void HandoverToUpstreamProxy(); uint8_t m_recv_chunk[8192]; std::string m_recv_buf; // from client std::string m_send_buf; // to upstream std::shared_ptr m_sock; std::shared_ptr m_proxysock; boost::asio::ip::tcp::resolver m_proxy_resolver; std::string m_OutproxyUrl; bool m_Addresshelper; i2p::http::URL m_ProxyURL; i2p::http::URL m_RequestURL; uint8_t m_socks_buf[255+8]; // for socks request/response ssize_t m_req_len; i2p::http::URL m_ClientRequestURL; i2p::http::HTTPReq m_ClientRequest; i2p::http::HTTPRes m_ClientResponse; std::stringstream m_ClientRequestBuffer; public: HTTPReqHandler(HTTPProxy * parent, std::shared_ptr sock) : I2PServiceHandler(parent), m_sock(sock), m_proxysock(std::make_shared(parent->GetService())), m_proxy_resolver(parent->GetService()), m_OutproxyUrl(parent->GetOutproxyURL()), m_Addresshelper(parent->GetHelperSupport()) {} ~HTTPReqHandler() { Terminate(); } void Handle () { AsyncSockRead(); } /* overload */ }; void HTTPReqHandler::AsyncSockRead() { LogPrint(eLogDebug, "HTTPProxy: Async sock read"); if (!m_sock) { LogPrint(eLogError, "HTTPProxy: No socket for read"); return; } m_sock->async_read_some(boost::asio::buffer(m_recv_chunk, sizeof(m_recv_chunk)), std::bind(&HTTPReqHandler::HandleSockRecv, shared_from_this(), std::placeholders::_1, std::placeholders::_2)); } void HTTPReqHandler::Terminate() { if (Kill()) return; if (m_sock) { LogPrint(eLogDebug, "HTTPProxy: Close sock"); m_sock->close(); m_sock = nullptr; } if(m_proxysock) { LogPrint(eLogDebug, "HTTPProxy: Close proxysock"); if(m_proxysock->is_open()) m_proxysock->close(); m_proxysock = nullptr; } Done(shared_from_this()); } void HTTPReqHandler::GenericProxyError(const std::string& title, const std::string& description) { std::stringstream ss; ss << "

" << tr("Proxy error") << ": " << title << "

\r\n"; ss << "

" << description << "

\r\n"; std::string content = ss.str(); SendProxyError(content); } void HTTPReqHandler::GenericProxyInfo(const std::string& title, const std::string& description) { std::stringstream ss; ss << "

" << tr("Proxy info") << ": " << title << "

\r\n"; ss << "

" << description << "

\r\n"; std::string content = ss.str(); SendProxyError(content); } void HTTPReqHandler::HostNotFound(std::string& host) { std::stringstream ss; ss << "

" << tr("Proxy error: Host not found") << "

\r\n" << "

" << tr("Remote host not found in router's addressbook") << "

\r\n" << "

" << tr("You may try to find this host on jump services below") << ":

\r\n" << "

second << host << "\">" << js->first << "

\r\n"; std::string content = ss.str(); SendProxyError(content); } void HTTPReqHandler::SendProxyError(std::string& content) { i2p::http::HTTPRes res; res.code = 500; res.add_header("Content-Type", "text/html; charset=UTF-8"); res.add_header("Connection", "close"); std::stringstream ss; ss << "\r\n" << pageHead << "" << content << "\r\n" << "\r\n"; res.body = ss.str(); std::string response = res.to_string(); boost::asio::async_write(*m_sock, boost::asio::buffer(response), boost::asio::transfer_all(), std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1)); } void HTTPReqHandler::SendRedirect(std::string& address) { i2p::http::HTTPRes res; res.code = 302; res.add_header("Location", address); res.add_header("Connection", "close"); std::string response = res.to_string(); boost::asio::async_write(*m_sock, boost::asio::buffer(response), boost::asio::transfer_all(), std::bind(&HTTPReqHandler::SentHTTPFailed, shared_from_this(), std::placeholders::_1)); } bool HTTPReqHandler::ExtractAddressHelper(i2p::http::URL & url, std::string & b64, bool & confirm) { confirm = false; const char *param = "i2paddresshelper="; std::size_t pos = url.query.find(param); std::size_t len = std::strlen(param); std::map params; if (pos == std::string::npos) return false; /* not found */ if (!url.parse_query(params)) return false; std::string value = params["i2paddresshelper"]; len += value.length(); b64 = i2p::http::UrlDecode(value); // if we need update exists, request formed with update param if (params["update"] == "true") { len += std::strlen("&update=true"); confirm = true; } if (pos != 0 && url.query[pos-1] == '&') { pos--; len++; } // if helper is not only one query option url.query.replace(pos, len, ""); return true; } void HTTPReqHandler::SanitizeHTTPRequest(i2p::http::HTTPReq & req) { /* drop common headers */ req.RemoveHeader("Via"); req.RemoveHeader("From"); req.RemoveHeader("Forwarded"); req.RemoveHeader("DNT"); // Useless DoNotTrack flag req.RemoveHeader("Accept", "Accept-Encoding"); // Accept*, but Accept-Encoding /* drop proxy-disclosing headers */ req.RemoveHeader("X-Forwarded"); req.RemoveHeader("Proxy-"); // Proxy-* /* replace headers */ req.UpdateHeader("User-Agent", "MYOB/6.66 (AN/ON)"); /** * i2pd PR #1816: * Android Webview send this with the value set to the application ID, so we drop it, * but only if it does not belong to an AJAX request (*HttpRequest, like XMLHttpRequest). */ if(req.GetHeader("X-Requested-With") != "") { auto h = req.GetHeader ("X-Requested-With"); auto x = h.find("HttpRequest"); if (x == std::string::npos) // not found req.RemoveHeader("X-Requested-With"); } /** * according to i2p ticket #1862: * leave Referer if requested URL with same schema, host and port, * otherwise, drop it. */ if(req.GetHeader("Referer") != "") { i2p::http::URL reqURL; reqURL.parse(req.uri); i2p::http::URL refURL; refURL.parse(req.GetHeader("Referer")); if(!boost::iequals(reqURL.schema, refURL.schema) || !boost::iequals(reqURL.host, refURL.host) || reqURL.port != refURL.port) req.RemoveHeader("Referer"); } /* add headers */ /* close connection, if not Connection: (U|u)pgrade (for websocket) */ auto h = req.GetHeader ("Connection"); auto x = h.find("pgrade"); if (!(x != std::string::npos && std::tolower(h[x - 1]) == 'u')) req.UpdateHeader("Connection", "close"); } /** * @brief Try to parse request from @a m_recv_buf * If parsing success, rebuild request and store to @a m_send_buf * with remaining data tail * @return true on processed request or false if more data needed */ bool HTTPReqHandler::HandleRequest() { m_req_len = m_ClientRequest.parse(m_recv_buf); if (m_req_len == 0) return false; /* need more data */ if (m_req_len < 0) { LogPrint(eLogError, "HTTPProxy: Unable to parse request"); GenericProxyError(tr("Invalid request"), tr("Proxy unable to parse your request")); return true; /* parse error */ } /* parsing success, now let's look inside request */ LogPrint(eLogDebug, "HTTPProxy: Requested: ", m_ClientRequest.uri); m_RequestURL.parse(m_ClientRequest.uri); bool m_Confirm; std::string jump; if (ExtractAddressHelper(m_RequestURL, jump, m_Confirm)) { if (!m_Addresshelper) { LogPrint(eLogWarning, "HTTPProxy: Addresshelper request rejected"); GenericProxyError(tr("Invalid request"), tr("addresshelper is not supported")); return true; } if (i2p::client::context.GetAddressBook ().RecordExists (m_RequestURL.host, jump)) { std::string full_url = m_RequestURL.to_string(); SendRedirect(full_url); return true; } else if (!i2p::client::context.GetAddressBook ().FindAddress (m_RequestURL.host) || m_Confirm) { // Referer check to prevent forced overwriting by link with "&update=true" from harmful URL const std::string referer_raw = m_ClientRequest.GetHeader("Referer"); i2p::http::URL referer_url; if (!referer_raw.empty ()) { referer_url.parse (referer_raw); } if (m_RequestURL.host != referer_url.host) { if (m_Confirm) { LogPrint (eLogWarning, "HTTPProxy: Address update from addresshelper rejected for ", m_RequestURL.host, " (referer is ", m_RequestURL.host.empty() ? "empty" : "harmful", ")"); std::string full_url = m_RequestURL.to_string(); std::stringstream ss; ss << tr("Host") << " " << m_RequestURL.host << " " << tr("already in router's addressbook") << ". "; ss << "" << tr( /* Trying to overwrite an existing domain in the address book by direct link with "&update=true" is seems like an attack */ "Be careful: source of this URL may be harmful") << "! "; ss << tr(/* tr: The "record" means addressbook's record. That message appears when domain was already added to addressbook, but helper link is opened for it. */ "Click here to update record:" ); ss << " " << tr("Continue") << "."; GenericProxyInfo(tr("Addresshelper forced update rejected"), ss.str()); } else { LogPrint (eLogDebug, "HTTPProxy: Adding address from addresshelper for ", m_RequestURL.host, " (generate refer-base page)"); std::string full_url = m_RequestURL.to_string(); std::stringstream ss; ss << tr("To add host") << " " << m_RequestURL.host << " " << tr("in router's addressbook") << ", "; ss << tr("click here") << ":"; ss << " " << tr("Continue") << "."; GenericProxyInfo(tr("Addresshelper request"), ss.str()); } return true; /* request processed */ } i2p::client::context.GetAddressBook ().InsertAddress (m_RequestURL.host, jump); LogPrint (eLogInfo, "HTTPProxy: Added address from addresshelper for ", m_RequestURL.host); std::string full_url = m_RequestURL.to_string(); std::stringstream ss; ss << tr("Host") <<" " << m_RequestURL.host << " " << tr("added to router's addressbook from helper") << ". "; ss << tr("Click here to proceed:") << " " << tr("Continue") << "."; GenericProxyInfo(tr("Addresshelper adding"), ss.str()); return true; /* request processed */ } else { std::string full_url = m_RequestURL.to_string(); std::stringstream ss; ss << tr("Host") << " " << m_RequestURL.host << " " << tr("already in router's addressbook") << ". "; ss << tr(/* tr: The "record" means addressbook's record. That message appears when domain was already added to addressbook, but helper link is opened for it. */ "Click here to update record:" ); ss << " " << tr("Continue") << "."; GenericProxyInfo(tr("Addresshelper update"), ss.str()); return true; /* request processed */ } } std::string dest_host; uint16_t dest_port; bool useConnect = false; if(m_ClientRequest.method == "CONNECT") { std::string uri(m_ClientRequest.uri); auto pos = uri.find(":"); if(pos == std::string::npos || pos == uri.size() - 1) { GenericProxyError(tr("Invalid request"), tr("invalid request uri")); return true; } else { useConnect = true; dest_port = std::stoi(uri.substr(pos+1)); dest_host = uri.substr(0, pos); } } else { SanitizeHTTPRequest(m_ClientRequest); dest_host = m_RequestURL.host; dest_port = m_RequestURL.port; /* always set port, even if missing in request */ if (!dest_port) dest_port = (m_RequestURL.schema == "https") ? 443 : 80; /* detect dest_host, set proper 'Host' header in upstream request */ if (dest_host != "") { /* absolute url, replace 'Host' header */ std::string h = dest_host; if (dest_port != 0 && dest_port != 80) h += ":" + std::to_string(dest_port); m_ClientRequest.UpdateHeader("Host", h); } else { auto h = m_ClientRequest.GetHeader ("Host"); if (h.length () > 0) { /* relative url and 'Host' header provided. transparent proxy mode? */ i2p::http::URL u; std::string t = "http://" + h; u.parse(t); dest_host = u.host; dest_port = u.port; } else { /* relative url and missing 'Host' header */ GenericProxyError(tr("Invalid request"), tr("Can't detect destination host from request")); return true; } } } /* check dest_host really exists and inside I2P network */ if (str_rmatch(dest_host, ".i2p")) { if (!i2p::client::context.GetAddressBook ().GetAddress (dest_host)) { HostNotFound(dest_host); return true; /* request processed */ } } else { if(m_OutproxyUrl.size()) { LogPrint (eLogDebug, "HTTPProxy: Using outproxy ", m_OutproxyUrl); if(m_ProxyURL.parse(m_OutproxyUrl)) ForwardToUpstreamProxy(); else GenericProxyError(tr("Outproxy failure"), tr("bad outproxy settings")); } else { LogPrint (eLogWarning, "HTTPProxy: Outproxy failure for ", dest_host, ": no outproxy enabled"); std::stringstream ss; ss << tr("Host") << " " << dest_host << " " << tr("not inside I2P network, but outproxy is not enabled"); GenericProxyError(tr("Outproxy failure"), ss.str()); } return true; } if(useConnect) { HTTPConnect(dest_host, dest_port); return true; } /* make relative url */ m_RequestURL.schema = ""; m_RequestURL.host = ""; m_ClientRequest.uri = m_RequestURL.to_string(); /* drop original request from recv buffer */ m_recv_buf.erase(0, m_req_len); /* build new buffer from modified request and data from original request */ m_send_buf = m_ClientRequest.to_string(); m_send_buf.append(m_recv_buf); /* connect to destination */ LogPrint(eLogDebug, "HTTPProxy: Connecting to host ", dest_host, ":", dest_port); GetOwner()->CreateStream (std::bind (&HTTPReqHandler::HandleStreamRequestComplete, shared_from_this(), std::placeholders::_1), dest_host, dest_port); return true; } void HTTPReqHandler::ForwardToUpstreamProxy() { LogPrint(eLogDebug, "HTTPProxy: Forwarded to upstream"); /* build http request */ m_ClientRequestURL = m_RequestURL; LogPrint(eLogDebug, "HTTPProxy: ", m_ClientRequestURL.host); m_ClientRequestURL.schema = ""; m_ClientRequestURL.host = ""; std::string origURI = m_ClientRequest.uri; // TODO: what do we need to change uri for? m_ClientRequest.uri = m_ClientRequestURL.to_string(); /* update User-Agent to ESR version of Firefox, same as Tor Browser below version 8, for non-HTTPS connections */ if(m_ClientRequest.method != "CONNECT") m_ClientRequest.UpdateHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0"); m_ClientRequest.write(m_ClientRequestBuffer); m_ClientRequestBuffer << m_recv_buf.substr(m_req_len); /* assume http if empty schema */ if (m_ProxyURL.schema == "" || m_ProxyURL.schema == "http") { /* handle upstream http proxy */ if (!m_ProxyURL.port) m_ProxyURL.port = 80; if (m_ProxyURL.is_i2p()) { m_ClientRequest.uri = origURI; auto auth = i2p::http::CreateBasicAuthorizationString (m_ProxyURL.user, m_ProxyURL.pass); if (!auth.empty ()) { /* remove existing authorization if any */ m_ClientRequest.RemoveHeader("Proxy-"); /* add own http proxy authorization */ m_ClientRequest.AddHeader("Proxy-Authorization", auth); } m_send_buf = m_ClientRequest.to_string(); m_recv_buf.erase(0, m_req_len); m_send_buf.append(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 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::HandleUpstreamSocksProxyConnect, this, std::placeholders::_1)); })); } else { /* unknown type, complain */ GenericProxyError(tr("unknown outproxy url"), m_ProxyURL.to_string()); } } void HTTPReqHandler::HandleUpstreamProxyResolved(const boost::system::error_code & ec, boost::asio::ip::tcp::resolver::iterator it, ProxyResolvedHandler handler) { if(ec) GenericProxyError(tr("cannot resolve upstream proxy"), ec.message()); else handler(*it); } void HTTPReqHandler::HandleUpstreamSocksProxyConnect(const boost::system::error_code & ec) { if(!ec) { if(m_RequestURL.host.size() > 255) { GenericProxyError(tr("hostname too long"), m_RequestURL.host); return; } uint16_t port = m_RequestURL.port; if(!port) port = 80; LogPrint(eLogDebug, "HTTPProxy: Connected to SOCKS upstream"); std::string host = m_RequestURL.host; std::size_t reqsize = 0; m_socks_buf[0] = '\x04'; m_socks_buf[1] = 1; htobe16buf(m_socks_buf+2, port); m_socks_buf[4] = 0; m_socks_buf[5] = 0; m_socks_buf[6] = 0; m_socks_buf[7] = 1; // user id m_socks_buf[8] = 'i'; m_socks_buf[9] = '2'; m_socks_buf[10] = 'p'; m_socks_buf[11] = 'd'; m_socks_buf[12] = 0; reqsize += 13; memcpy(m_socks_buf+ reqsize, host.c_str(), host.size()); reqsize += host.size(); m_socks_buf[++reqsize] = 0; boost::asio::async_write(*m_proxysock, boost::asio::buffer(m_socks_buf, reqsize), boost::asio::transfer_all(), std::bind(&HTTPReqHandler::HandleSocksProxySendHandshake, this, std::placeholders::_1, std::placeholders::_2)); } else GenericProxyError(tr("cannot connect to upstream socks proxy"), ec.message()); } void HTTPReqHandler::HandleSocksProxySendHandshake(const boost::system::error_code & ec, std::size_t bytes_transferred) { LogPrint(eLogDebug, "HTTPProxy: Upstream SOCKS handshake sent"); if(ec) GenericProxyError(tr("Cannot negotiate with socks proxy"), ec.message()); else m_proxysock->async_read_some(boost::asio::buffer(m_socks_buf, 8), std::bind(&HTTPReqHandler::HandleSocksProxyReply, this, std::placeholders::_1, std::placeholders::_2)); } void HTTPReqHandler::HandoverToUpstreamProxy() { LogPrint(eLogDebug, "HTTPProxy: Handover to SOCKS proxy"); auto connection = std::make_shared(GetOwner(), m_proxysock, m_sock); m_sock = nullptr; m_proxysock = nullptr; GetOwner()->AddHandler(connection); connection->Start(); Terminate(); } void HTTPReqHandler::HTTPConnect(const std::string & host, uint16_t port) { LogPrint(eLogDebug, "HTTPProxy: CONNECT ",host, ":", port); std::string hostname(host); if(str_rmatch(hostname, ".i2p")) GetOwner()->CreateStream (std::bind (&HTTPReqHandler::HandleHTTPConnectStreamRequestComplete, shared_from_this(), std::placeholders::_1), host, port); else ForwardToUpstreamProxy(); } void HTTPReqHandler::HandleHTTPConnectStreamRequestComplete(std::shared_ptr stream) { if(stream) { m_ClientResponse.code = 200; m_ClientResponse.status = "OK"; m_send_buf = m_ClientResponse.to_string(); m_sock->send(boost::asio::buffer(m_send_buf)); auto connection = std::make_shared(GetOwner(), m_sock, stream); GetOwner()->AddHandler(connection); connection->I2PConnect(); m_sock = nullptr; Terminate(); } else { GenericProxyError(tr("CONNECT error"), tr("Failed to Connect")); } } void HTTPReqHandler::SocksProxySuccess() { if(m_ClientRequest.method == "CONNECT") { m_ClientResponse.code = 200; m_send_buf = m_ClientResponse.to_string(); boost::asio::async_write(*m_sock, boost::asio::buffer(m_send_buf), boost::asio::transfer_all(), [&] (const boost::system::error_code & ec, std::size_t transferred) { if(ec) GenericProxyError(tr("socks proxy error"), ec.message()); else HandoverToUpstreamProxy(); }); } else { m_send_buf = m_ClientRequestBuffer.str(); LogPrint(eLogDebug, "HTTPProxy: Send ", m_send_buf.size(), " bytes"); boost::asio::async_write(*m_proxysock, boost::asio::buffer(m_send_buf), boost::asio::transfer_all(), [&](const boost::system::error_code & ec, std::size_t transferred) { if(ec) GenericProxyError(tr("failed to send request to upstream"), ec.message()); else HandoverToUpstreamProxy(); }); } } void HTTPReqHandler::HandleSocksProxyReply(const boost::system::error_code & ec, std::size_t bytes_transferred) { if(!ec) { if(m_socks_buf[1] == 90) { // success SocksProxySuccess(); } else { std::stringstream ss; ss << "error code: "; ss << (int) m_socks_buf[1]; std::string msg = ss.str(); GenericProxyError(tr("socks proxy error"), msg); } } else GenericProxyError(tr("No Reply From socks proxy"), ec.message()); } void HTTPReqHandler::HandleUpstreamHTTPProxyConnect(const boost::system::error_code & ec) { if(!ec) { LogPrint(eLogDebug, "HTTPProxy: Connected to http upstream"); GenericProxyError(tr("cannot connect"), tr("http out proxy not implemented")); } else GenericProxyError(tr("cannot connect to upstream http proxy"), ec.message()); } /* will be called after some data received from client */ void HTTPReqHandler::HandleSockRecv(const boost::system::error_code & ecode, std::size_t len) { LogPrint(eLogDebug, "HTTPProxy: Sock recv: ", len, " bytes, recv buf: ", m_recv_buf.length(), ", send buf: ", m_send_buf.length()); if(ecode) { LogPrint(eLogWarning, "HTTPProxy: Sock recv got error: ", ecode); Terminate(); return; } m_recv_buf.append(reinterpret_cast(m_recv_chunk), len); if (HandleRequest()) { m_recv_buf.clear(); return; } AsyncSockRead(); } void HTTPReqHandler::SentHTTPFailed(const boost::system::error_code & ecode) { if (ecode) LogPrint (eLogError, "HTTPProxy: Closing socket after sending failure because: ", ecode.message ()); Terminate(); } void HTTPReqHandler::HandleStreamRequestComplete (std::shared_ptr stream) { if (!stream) { LogPrint (eLogError, "HTTPProxy: Error when creating the stream, check the previous warnings for more info"); GenericProxyError(tr("Host is down"), tr("Can't create connection to requested host, it may be down. Please try again later.")); return; } if (Kill()) return; LogPrint (eLogDebug, "HTTPProxy: Created new I2PTunnel stream, sSID=", stream->GetSendStreamID(), ", rSID=", stream->GetRecvStreamID()); auto connection = std::make_shared(GetOwner(), m_sock, stream); GetOwner()->AddHandler (connection); connection->I2PConnect (reinterpret_cast(m_send_buf.data()), m_send_buf.length()); Done (shared_from_this()); } HTTPProxy::HTTPProxy(const std::string& name, const std::string& address, int port, const std::string & outproxy, bool addresshelper, std::shared_ptr localDestination): TCPIPAcceptor (address, port, localDestination ? localDestination : i2p::client::context.GetSharedLocalDestination ()), m_Name (name), m_OutproxyUrl (outproxy), m_Addresshelper (addresshelper) { } std::shared_ptr HTTPProxy::CreateHandler(std::shared_ptr socket) { return std::make_shared (this, socket); } } // http } // i2p