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I2P: End-to-End encrypted and anonymous Internet
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536 lines
17 KiB
536 lines
17 KiB
// There is bug in boost 1.49 with gcc 4.7 coming with Debian Wheezy |
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// #define GCC47_BOOST149 ((BOOST_VERSION == 104900) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 7)) |
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// TODO: handle this somewhere, but definitely not here |
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#include "I2PControl.h" |
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#include <iomanip> |
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#include <sstream> |
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#include <cryptopp/osrng.h> |
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#include <cryptopp/hex.h> |
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#include <cryptopp/filters.h> |
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#include <boost/property_tree/json_parser.hpp> |
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#include "util/util.h" |
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#include "util/Log.h" |
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#include "util/Timestamp.h" |
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#include "transport/Transports.h" |
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#include "tunnel/Tunnel.h" |
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#include "NetworkDatabase.h" |
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#include "version.h" |
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#include "Daemon.h" |
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namespace i2p { |
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namespace client { |
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namespace i2pcontrol { |
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JsonObject::JsonObject(const std::string& value) |
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: children(), value("\"" + value + "\"") |
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{ |
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} |
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JsonObject::JsonObject(int value) |
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: children(), value(std::to_string(value)) |
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{ |
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} |
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JsonObject::JsonObject(double v) |
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: children(), value() |
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{ |
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std::ostringstream oss; |
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oss << std::fixed << std::setprecision(2) << v; |
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value = oss.str(); |
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} |
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JsonObject& JsonObject::operator[](const std::string& key) |
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{ |
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return children[key]; |
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} |
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std::string JsonObject::toString() const |
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{ |
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if(children.empty()) |
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return value; |
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std::ostringstream oss; |
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oss << '{'; |
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for(auto it = children.begin(); it != children.end(); ++it) { |
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if(it != children.begin()) |
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oss << ','; |
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oss << '"' << it->first << "\":" << it->second.toString(); |
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} |
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oss << '}'; |
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return oss.str(); |
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} |
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JsonObject tunnelToJsonObject(i2p::tunnel::Tunnel* tunnel) |
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{ |
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JsonObject obj; |
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std::stringstream ss; |
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tunnel->GetTunnelConfig()->Print(ss); // TODO: use a JsonObject |
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obj["layout"] = JsonObject(ss.str()); |
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const auto state = tunnel->GetState(); |
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if(state == i2p::tunnel::eTunnelStateFailed) |
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obj["state"] = JsonObject("failed"); |
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else if(state == i2p::tunnel::eTunnelStateExpiring) |
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obj["state"] = JsonObject("expiring"); |
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return obj; |
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} |
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I2PControlSession::Response::Response(const std::string& version) |
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: id(), version(version), error(ErrorCode::None), parameters() |
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{ |
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} |
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std::string I2PControlSession::Response::toJsonString() const |
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{ |
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std::ostringstream oss; |
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oss << "{\"id\":" << id << ",\"result\":{"; |
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for(auto it = parameters.begin(); it != parameters.end(); ++it) { |
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if(it != parameters.begin()) |
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oss << ','; |
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oss << '"' << it->first << "\":" << it->second; |
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} |
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oss << "},\"jsonrpc\":\"" << version << '"'; |
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if(error != ErrorCode::None) |
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oss << ",\"error\":{\"code\":" << -static_cast<int>(error) |
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<< ",\"message\":\"" << getErrorMsg() << "\"" << "}"; |
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oss << "}"; |
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return oss.str(); |
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} |
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std::string I2PControlSession::Response::getErrorMsg() const |
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{ |
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switch(error) { |
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case ErrorCode::MethodNotFound: |
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return "Method not found."; |
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case ErrorCode::InvalidParameters: |
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return "Invalid parameters."; |
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case ErrorCode::InvalidRequest: |
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return "Invalid request."; |
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case ErrorCode::ParseError: |
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return "Json parse error."; |
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case ErrorCode::InvalidPassword: |
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return "Invalid password."; |
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case ErrorCode::NoToken: |
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return "No authentication token given."; |
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case ErrorCode::NonexistentToken: |
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return "Nonexistent authentication token given."; |
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case ErrorCode::ExpiredToken: |
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return "Expired authentication token given."; |
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case ErrorCode::UnspecifiedVersion: |
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return "Version not specified."; |
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case ErrorCode::UnsupportedVersion: |
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return "Version not supported."; |
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default: |
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return ""; |
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}; |
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} |
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void I2PControlSession::Response::setParam(const std::string& param, const std::string& value) |
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{ |
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parameters[param] = value.empty() ? "null" : "\"" + value + "\""; |
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} |
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void I2PControlSession::Response::setParam(const std::string& param, int value) |
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{ |
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parameters[param] = std::to_string(value); |
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} |
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void I2PControlSession::Response::setParam(const std::string& param, double value) |
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{ |
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std::ostringstream oss; |
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oss << std::fixed << std::setprecision(2) << value; |
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parameters[param] = oss.str(); |
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} |
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void I2PControlSession::Response::setParam(const std::string& param, const JsonObject& value) |
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{ |
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parameters[param] = value.toString(); |
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} |
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void I2PControlSession::Response::setError(ErrorCode code) |
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{ |
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error = code; |
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} |
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void I2PControlSession::Response::setId(const std::string& identifier) |
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{ |
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id = identifier; |
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} |
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I2PControlSession::I2PControlSession(boost::asio::io_service& ios, const std::string& pass) |
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: password(pass), tokens(), tokensMutex(), |
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service(ios), shutdownTimer(ios), expireTokensTimer(ios) |
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{ |
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using namespace i2p::client::i2pcontrol::constants; |
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// Method handlers |
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methodHandlers[METHOD_AUTHENTICATE] = &I2PControlSession::handleAuthenticate; |
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methodHandlers[METHOD_ECHO] = &I2PControlSession::handleEcho; |
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methodHandlers[METHOD_I2PCONTROL] = &I2PControlSession::handleI2PControl; |
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methodHandlers[METHOD_ROUTER_INFO] = &I2PControlSession::handleRouterInfo; |
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methodHandlers[METHOD_ROUTER_MANAGER] = &I2PControlSession::handleRouterManager; |
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methodHandlers[METHOD_NETWORK_SETTING] = &I2PControlSession::handleNetworkSetting; |
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// RouterInfo handlers |
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routerInfoHandlers[ROUTER_INFO_UPTIME] = &I2PControlSession::handleUptime; |
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routerInfoHandlers[ROUTER_INFO_VERSION] = &I2PControlSession::handleVersion; |
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routerInfoHandlers[ROUTER_INFO_STATUS] = &I2PControlSession::handleStatus; |
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routerInfoHandlers[ROUTER_INFO_DATAPATH] = &I2PControlSession::handleDatapath; |
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routerInfoHandlers[ROUTER_INFO_NETDB_KNOWNPEERS]= &I2PControlSession::handleNetDbKnownPeers; |
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routerInfoHandlers[ROUTER_INFO_NETDB_ACTIVEPEERS] = &I2PControlSession::handleNetDbActivePeers; |
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routerInfoHandlers[ROUTER_INFO_NETDB_LEASESETS] = &I2PControlSession::handleNetDbLeaseSets; |
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routerInfoHandlers[ROUTER_INFO_NETDB_FLOODFILLS] = &I2PControlSession::handleNetDbFloodfills; |
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routerInfoHandlers[ROUTER_INFO_NET_STATUS] = &I2PControlSession::handleNetStatus; |
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routerInfoHandlers[ROUTER_INFO_TUNNELS_PARTICIPATING] = &I2PControlSession::handleTunnelsParticipating; |
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routerInfoHandlers[ROUTER_INFO_TUNNELS_CREATION_SUCCESS] = &I2PControlSession::handleTunnelsCreationSuccess; |
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routerInfoHandlers[ROUTER_INFO_TUNNELS_IN_LIST] = &I2PControlSession::handleTunnelsInList; |
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routerInfoHandlers[ROUTER_INFO_TUNNELS_OUT_LIST] = &I2PControlSession::handleTunnelsOutList; |
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routerInfoHandlers[ROUTER_INFO_BW_IB_1S] = &I2PControlSession::handleInBandwidth1S; |
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routerInfoHandlers[ROUTER_INFO_BW_OB_1S] = &I2PControlSession::handleOutBandwidth1S; |
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// RouterManager handlers |
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routerManagerHandlers[ROUTER_MANAGER_SHUTDOWN] = &I2PControlSession::handleShutdown; |
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routerManagerHandlers[ROUTER_MANAGER_SHUTDOWN_GRACEFUL] = &I2PControlSession::handleShutdownGraceful; |
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routerManagerHandlers[ROUTER_MANAGER_RESEED] = &I2PControlSession::handleReseed; |
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} |
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void I2PControlSession::start() |
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{ |
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startExpireTokensJob(); |
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} |
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void I2PControlSession::stop() |
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{ |
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boost::system::error_code e; // Make sure this doesn't throw |
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shutdownTimer.cancel(e); |
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expireTokensTimer.cancel(e); |
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} |
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I2PControlSession::Response I2PControlSession::handleRequest(std::stringstream& request) |
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{ |
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boost::property_tree::ptree pt; |
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boost::property_tree::read_json(request, pt); |
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Response response; |
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try { |
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response.setId(pt.get<std::string>(constants::PROPERTY_ID)); |
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std::string method = pt.get<std::string>(constants::PROPERTY_METHOD); |
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auto it = methodHandlers.find(method); |
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if(it == methodHandlers.end()) { // Not found |
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LogPrint(eLogWarning, "Unknown I2PControl method ", method); |
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response.setError(ErrorCode::MethodNotFound); |
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return response; |
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} |
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PropertyTree params = pt.get_child(constants::PROPERTY_PARAMS); |
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if(method != constants::METHOD_AUTHENTICATE && !authenticate(params, response)) { |
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LogPrint(eLogWarning, "I2PControl invalid token presented"); |
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return response; |
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} |
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// Call the appropriate handler |
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(this->*(it->second))(params, response); |
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} catch(const boost::property_tree::ptree_error& error) { |
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response.setError(ErrorCode::ParseError); |
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} catch(...) { |
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response.setError(ErrorCode::InternalError); |
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} |
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return response; |
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} |
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bool I2PControlSession::authenticate(const PropertyTree& pt, Response& response) |
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{ |
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try { |
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std::string token = pt.get<std::string>(constants::PARAM_TOKEN); |
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std::lock_guard<std::mutex> lock(tokensMutex); |
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auto it = tokens.find(token); |
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if(it == tokens.end()) { |
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response.setError(ErrorCode::NonexistentToken); |
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return false; |
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} else if(util::GetSecondsSinceEpoch() - it->second > constants::TOKEN_LIFETIME) { |
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response.setError(ErrorCode::ExpiredToken); |
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return false; |
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} |
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} catch(const boost::property_tree::ptree_error& error) { |
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response.setError(ErrorCode::NoToken); |
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return false; |
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} |
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return true; |
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} |
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std::string I2PControlSession::generateToken() const |
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{ |
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byte random_data[constants::TOKEN_SIZE] = {}; |
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CryptoPP::AutoSeededRandomPool rng; |
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rng.GenerateBlock(random_data, constants::TOKEN_SIZE); |
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std::string token; |
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CryptoPP::StringSource ss( |
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random_data, constants::TOKEN_SIZE, true, |
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new CryptoPP::HexEncoder(new CryptoPP::StringSink(token)) |
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); |
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return token; |
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} |
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void I2PControlSession::handleAuthenticate(const PropertyTree& pt, Response& response) |
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{ |
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const int api = pt.get<int>(constants::PARAM_API); |
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const std::string given_pass = pt.get<std::string>(constants::PARAM_PASSWORD); |
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LogPrint(eLogDebug, "I2PControl Authenticate API = ", api, " Password = ", given_pass); |
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if(given_pass != password) { |
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LogPrint( |
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eLogError, "I2PControl Authenticate Invalid password ", given_pass, |
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" expected ", password |
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); |
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response.setError(ErrorCode::InvalidPassword); |
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return; |
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} |
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const std::string token = generateToken(); |
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response.setParam(constants::PARAM_API, api); |
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response.setParam(constants::PARAM_TOKEN, token); |
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std::lock_guard<std::mutex> lock(tokensMutex); |
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tokens.insert(std::make_pair(token, util::GetSecondsSinceEpoch())); |
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} |
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void I2PControlSession::handleEcho(const PropertyTree& pt, Response& response) |
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{ |
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const std::string echo = pt.get<std::string>(constants::PARAM_ECHO); |
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LogPrint(eLogDebug, "I2PControl Echo Echo = ", echo); |
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response.setParam(constants::PARAM_RESULT, echo); |
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} |
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void I2PControlSession::handleI2PControl(const PropertyTree&, Response&) |
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{ |
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LogPrint(eLogDebug, "I2PControl I2PControl"); |
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// TODO: implement |
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} |
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void I2PControlSession::handleRouterInfo(const PropertyTree& pt, Response& response) |
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{ |
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LogPrint(eLogDebug, "I2PControl RouterInfo"); |
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for(const auto& pair : pt) { |
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if(pair.first == constants::PARAM_TOKEN) |
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continue; |
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LogPrint(eLogDebug, pair.first); |
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auto it = routerInfoHandlers.find(pair.first); |
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if(it != routerInfoHandlers.end()) { |
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(this->*(it->second))(response); |
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} else { |
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LogPrint(eLogError, "I2PControl RouterInfo unknown request ", pair.first); |
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response.setError(ErrorCode::InvalidRequest); |
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} |
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} |
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} |
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void I2PControlSession::handleRouterManager(const PropertyTree& pt, Response& response) |
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{ |
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LogPrint(eLogDebug, "I2PControl RouterManager"); |
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for(const auto& pair : pt) { |
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if(pair.first == constants::PARAM_TOKEN) |
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continue; |
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LogPrint(eLogDebug, pair.first); |
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auto it = routerManagerHandlers.find(pair.first); |
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if(it != routerManagerHandlers.end()) { |
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(this->*(it->second))(response); |
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} else { |
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LogPrint(eLogError, "I2PControl RouterManager unknown request ", pair.first); |
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response.setError(ErrorCode::InvalidRequest); |
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} |
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} |
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} |
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void I2PControlSession::handleNetworkSetting(const PropertyTree&, Response&) |
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{ |
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// TODO: implement |
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} |
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void I2PControlSession::handleUptime(Response& response) |
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{ |
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response.setParam(constants::ROUTER_INFO_UPTIME, (int)i2p::context.GetUptime()*1000); |
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} |
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void I2PControlSession::handleVersion(Response& response) |
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{ |
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response.setParam(constants::ROUTER_INFO_VERSION, VERSION); |
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} |
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void I2PControlSession::handleStatus(Response& response) |
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{ |
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response.setParam(constants::ROUTER_INFO_STATUS, "???"); // TODO: |
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} |
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void I2PControlSession::handleDatapath(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_DATAPATH, |
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i2p::util::filesystem::GetDefaultDataDir().string() |
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); |
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} |
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void I2PControlSession::handleNetDbKnownPeers(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_NETDB_KNOWNPEERS, i2p::data::netdb.GetNumRouters() |
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); |
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} |
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void I2PControlSession::handleNetDbActivePeers(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_NETDB_ACTIVEPEERS, |
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(int)i2p::transport::transports.GetPeers().size() |
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); |
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} |
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void I2PControlSession::handleNetDbFloodfills(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_NETDB_FLOODFILLS, |
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(int)i2p::data::netdb.GetNumFloodfills() |
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); |
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} |
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void I2PControlSession::handleNetDbLeaseSets(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_NETDB_LEASESETS, |
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(int)i2p::data::netdb.GetNumLeaseSets() |
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); |
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} |
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void I2PControlSession::handleNetStatus(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_NET_STATUS, (int)i2p::context.GetStatus() |
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); |
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} |
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void I2PControlSession::handleTunnelsParticipating(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_TUNNELS_PARTICIPATING, |
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(int)i2p::tunnel::tunnels.GetTransitTunnels().size() |
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); |
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} |
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void I2PControlSession::handleTunnelsCreationSuccess(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_TUNNELS_CREATION_SUCCESS, |
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i2p::tunnel::tunnels.GetTunnelCreationSuccessRate() |
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); |
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} |
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void I2PControlSession::handleTunnelsInList(Response& response) |
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{ |
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JsonObject list; |
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for(auto pair : i2p::tunnel::tunnels.GetInboundTunnels()) { |
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const std::string id = std::to_string(pair.first); |
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list[id] = tunnelToJsonObject(pair.second.get()); |
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list[id]["bytes"] = JsonObject( |
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static_cast<int>(pair.second->GetNumReceivedBytes()) |
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); |
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} |
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response.setParam(constants::ROUTER_INFO_TUNNELS_IN_LIST, list); |
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} |
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void I2PControlSession::handleTunnelsOutList(Response& response) |
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{ |
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JsonObject list; |
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for(auto tunnel : i2p::tunnel::tunnels.GetOutboundTunnels()) { |
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const std::string id = std::to_string(tunnel->GetTunnelID()); |
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list[id] = tunnelToJsonObject(tunnel.get()); |
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list[id]["bytes"] = JsonObject( |
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static_cast<int>(tunnel->GetNumSentBytes()) |
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); |
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} |
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response.setParam(constants::ROUTER_INFO_TUNNELS_OUT_LIST, list); |
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} |
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void I2PControlSession::handleInBandwidth1S(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_BW_IB_1S, |
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(double)i2p::transport::transports.GetInBandwidth() |
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); |
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} |
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void I2PControlSession::handleOutBandwidth1S(Response& response) |
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{ |
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response.setParam( |
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constants::ROUTER_INFO_BW_OB_1S, |
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(double)i2p::transport::transports.GetOutBandwidth() |
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); |
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} |
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void I2PControlSession::handleShutdown(Response& response) |
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{ |
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LogPrint(eLogInfo, "Shutdown requested"); |
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response.setParam(constants::ROUTER_MANAGER_SHUTDOWN, ""); |
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// 1 second to make sure response has been sent |
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shutdownTimer.expires_from_now(boost::posix_time::seconds(1)); |
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shutdownTimer.async_wait([](const boost::system::error_code&) { |
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Daemon.running = 0; |
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}); |
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} |
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void I2PControlSession::handleShutdownGraceful(Response& response) |
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{ |
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i2p::context.SetAcceptsTunnels(false); |
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int timeout = i2p::tunnel::tunnels.GetTransitTunnelsExpirationTimeout(); |
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LogPrint(eLogInfo, "Graceful shutdown requested. Will shutdown after ", timeout, " seconds"); |
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response.setParam(constants::ROUTER_MANAGER_SHUTDOWN_GRACEFUL, ""); |
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shutdownTimer.expires_from_now(boost::posix_time::seconds(timeout + 1)); |
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shutdownTimer.async_wait([](const boost::system::error_code&) { |
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Daemon.running = 0; |
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}); |
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} |
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void I2PControlSession::handleReseed(Response& response) |
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{ |
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LogPrint(eLogInfo, "Reseed requested"); |
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response.setParam(constants::ROUTER_MANAGER_SHUTDOWN, ""); |
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i2p::data::netdb.Reseed(); |
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} |
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void I2PControlSession::expireTokens(const boost::system::error_code& error) |
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{ |
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if(error == boost::asio::error::operation_aborted) |
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return; // Do not restart timer, shutting down |
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startExpireTokensJob(); |
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LogPrint(eLogDebug, "I2PControl is expiring tokens."); |
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const uint64_t now = util::GetSecondsSinceEpoch(); |
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std::lock_guard<std::mutex> lock(tokensMutex); |
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for(auto it = tokens.begin(); it != tokens.end(); ) { |
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if(now - it->second > constants::TOKEN_LIFETIME) |
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it = tokens.erase(it); |
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else |
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++it; |
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} |
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} |
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void I2PControlSession::startExpireTokensJob() |
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{ |
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expireTokensTimer.expires_from_now(boost::posix_time::seconds(constants::TOKEN_LIFETIME)); |
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expireTokensTimer.async_wait(std::bind( |
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&I2PControlSession::expireTokens, shared_from_this(), std::placeholders::_1 |
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)); |
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} |
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} |
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} |
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}
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