bool InitHTTPServer() { if (!InitHTTPAllowList()) return false; if (gArgs.GetBoolArg("-rpcssl", false)) { uiInterface.ThreadSafeMessageBox( "SSL mode for RPC (-rpcssl) is no longer supported.", "", CClientUIInterface::MSG_ERROR); return false; } // Redirect libevent's logging to our own log event_set_log_callback(&libevent_log_cb); // Update libevent's log handling. Returns false if our version of // libevent doesn't support debug logging, in which case we should // clear the BCLog::LIBEVENT flag. if (!UpdateHTTPServerLogging(g_logger->WillLogCategory(BCLog::LIBEVENT))) { g_logger->DisableCategory(BCLog::LIBEVENT); } #ifdef WIN32 evthread_use_windows_threads(); #else evthread_use_pthreads(); #endif raii_event_base base_ctr = obtain_event_base(); /* Create a new evhttp object to handle requests. */ raii_evhttp http_ctr = obtain_evhttp(base_ctr.get()); struct evhttp* http = http_ctr.get(); if (!http) { LogPrintf("couldn't create evhttp. Exiting.\n"); return false; } evhttp_set_timeout(http, gArgs.GetArg("-rpcservertimeout", DEFAULT_HTTP_SERVER_TIMEOUT)); evhttp_set_max_headers_size(http, MAX_HEADERS_SIZE); evhttp_set_max_body_size(http, MAX_SIZE); evhttp_set_gencb(http, http_request_cb, nullptr); if (!HTTPBindAddresses(http)) { LogPrintf("Unable to bind any endpoint for RPC server\n"); return false; } LogPrint(BCLog::HTTP, "Initialized HTTP server\n"); int workQueueDepth = std::max((long)gArgs.GetArg("-rpcworkqueue", DEFAULT_HTTP_WORKQUEUE), 1L); LogPrintf("HTTP: creating work queue of depth %d\n", workQueueDepth); workQueue = new WorkQueue<HTTPClosure>(workQueueDepth); // transfer ownership to eventBase/HTTP via .release() eventBase = base_ctr.release(); eventHTTP = http_ctr.release(); return true; }
static UniValue CallRPC(BaseRequestHandler *rh, const std::string& strMethod, const std::vector<std::string>& args) { std::string host; // In preference order, we choose the following for the port: // 1. -rpcport // 2. port in -rpcconnect (ie following : in ipv4 or ]: in ipv6) // 3. default port for chain int port = BaseParams().RPCPort(); SplitHostPort(gArgs.GetArg("-rpcconnect", DEFAULT_RPCCONNECT), port, host); port = gArgs.GetArg("-rpcport", port); // Obtain event base raii_event_base base = obtain_event_base(); // Synchronously look up hostname raii_evhttp_connection evcon = obtain_evhttp_connection_base(base.get(), host, port); evhttp_connection_set_timeout(evcon.get(), gArgs.GetArg("-rpcclienttimeout", DEFAULT_HTTP_CLIENT_TIMEOUT)); HTTPReply response; raii_evhttp_request req = obtain_evhttp_request(http_request_done, (void*)&response); if (req == nullptr) throw std::runtime_error("create http request failed"); #if LIBEVENT_VERSION_NUMBER >= 0x02010300 evhttp_request_set_error_cb(req.get(), http_error_cb); #endif // Get credentials std::string strRPCUserColonPass; bool failedToGetAuthCookie = false; if (gArgs.GetArg("-rpcpassword", "") == "") { // Try fall back to cookie-based authentication if no password is provided if (!GetAuthCookie(&strRPCUserColonPass)) { failedToGetAuthCookie = true; } } else { strRPCUserColonPass = gArgs.GetArg("-rpcuser", "") + ":" + gArgs.GetArg("-rpcpassword", ""); } struct evkeyvalq* output_headers = evhttp_request_get_output_headers(req.get()); assert(output_headers); evhttp_add_header(output_headers, "Host", host.c_str()); evhttp_add_header(output_headers, "Connection", "close"); evhttp_add_header(output_headers, "Authorization", (std::string("Basic ") + EncodeBase64(strRPCUserColonPass)).c_str()); // Attach request data std::string strRequest = rh->PrepareRequest(strMethod, args).write() + "\n"; struct evbuffer* output_buffer = evhttp_request_get_output_buffer(req.get()); assert(output_buffer); evbuffer_add(output_buffer, strRequest.data(), strRequest.size()); // check if we should use a special wallet endpoint std::string endpoint = "/"; if (!gArgs.GetArgs("-rpcwallet").empty()) { std::string walletName = gArgs.GetArg("-rpcwallet", ""); char *encodedURI = evhttp_uriencode(walletName.c_str(), walletName.size(), false); if (encodedURI) { endpoint = "/wallet/"+ std::string(encodedURI); free(encodedURI); } else { throw CConnectionFailed("uri-encode failed"); } } int r = evhttp_make_request(evcon.get(), req.get(), EVHTTP_REQ_POST, endpoint.c_str()); req.release(); // ownership moved to evcon in above call if (r != 0) { throw CConnectionFailed("send http request failed"); } event_base_dispatch(base.get()); if (response.status == 0) { std::string responseErrorMessage; if (response.error != -1) { responseErrorMessage = strprintf(" (error code %d - \"%s\")", response.error, http_errorstring(response.error)); } throw CConnectionFailed(strprintf("Could not connect to the server %s:%d%s\n\nMake sure the bitcoind server is running and that you are connecting to the correct RPC port.", host, port, responseErrorMessage)); } else if (response.status == HTTP_UNAUTHORIZED) { if (failedToGetAuthCookie) { throw std::runtime_error(strprintf( "Could not locate RPC credentials. No authentication cookie could be found, and RPC password is not set. See -rpcpassword and -stdinrpcpass. Configuration file: (%s)", GetConfigFile(gArgs.GetArg("-conf", BITCOIN_CONF_FILENAME)).string().c_str())); } else { throw std::runtime_error("Authorization failed: Incorrect rpcuser or rpcpassword"); } } else if (response.status >= 400 && response.status != HTTP_BAD_REQUEST && response.status != HTTP_NOT_FOUND && response.status != HTTP_INTERNAL_SERVER_ERROR) throw std::runtime_error(strprintf("server returned HTTP error %d", response.status)); else if (response.body.empty()) throw std::runtime_error("no response from server"); // Parse reply UniValue valReply(UniValue::VSTR); if (!valReply.read(response.body)) throw std::runtime_error("couldn't parse reply from server"); const UniValue reply = rh->ProcessReply(valReply); if (reply.empty()) throw std::runtime_error("expected reply to have result, error and id properties"); return reply; }
UniValue CallRPC(const std::string& strMethod, const UniValue& params) { std::string host = GetArg("-rpcconnect", DEFAULT_RPCCONNECT); int port = GetArg("-rpcport", BaseParams().RPCPort()); // Obtain event base raii_event_base base = obtain_event_base(); // Synchronously look up hostname raii_evhttp_connection evcon = obtain_evhttp_connection_base(base.get(), host, port); evhttp_connection_set_timeout(evcon.get(), GetArg("-rpcclienttimeout", DEFAULT_HTTP_CLIENT_TIMEOUT)); HTTPReply response; raii_evhttp_request req = obtain_evhttp_request(http_request_done, (void*)&response); if (req == NULL) throw std::runtime_error("create http request failed"); #if LIBEVENT_VERSION_NUMBER >= 0x02010300 evhttp_request_set_error_cb(req.get(), http_error_cb); #endif // Get credentials std::string strRPCUserColonPass; if (GetArg("-rpcpassword", "") == "") { // Try fall back to cookie-based authentication if no password is provided if (!GetAuthCookie(&strRPCUserColonPass)) { throw std::runtime_error(strprintf( _("Could not locate RPC credentials. No authentication cookie could be found, and no rpcpassword is set in the configuration file (%s)"), GetConfigFile(GetArg("-conf", BITCOIN_CONF_FILENAME)).string().c_str())); } } else { strRPCUserColonPass = GetArg("-rpcuser", "") + ":" + GetArg("-rpcpassword", ""); } struct evkeyvalq* output_headers = evhttp_request_get_output_headers(req.get()); assert(output_headers); evhttp_add_header(output_headers, "Host", host.c_str()); evhttp_add_header(output_headers, "Connection", "close"); evhttp_add_header(output_headers, "Authorization", (std::string("Basic ") + EncodeBase64(strRPCUserColonPass)).c_str()); // Attach request data std::string strRequest = JSONRPCRequestObj(strMethod, params, 1).write() + "\n"; struct evbuffer* output_buffer = evhttp_request_get_output_buffer(req.get()); assert(output_buffer); evbuffer_add(output_buffer, strRequest.data(), strRequest.size()); int r = evhttp_make_request(evcon.get(), req.get(), EVHTTP_REQ_POST, "/"); req.release(); // ownership moved to evcon in above call if (r != 0) { throw CConnectionFailed("send http request failed"); } event_base_dispatch(base.get()); if (response.status == 0) throw CConnectionFailed(strprintf("couldn't connect to server: %s (code %d)\n(make sure server is running and you are connecting to the correct RPC port)", http_errorstring(response.error), response.error)); else if (response.status == HTTP_UNAUTHORIZED) throw std::runtime_error("incorrect rpcuser or rpcpassword (authorization failed)"); else if (response.status >= 400 && response.status != HTTP_BAD_REQUEST && response.status != HTTP_NOT_FOUND && response.status != HTTP_INTERNAL_SERVER_ERROR) throw std::runtime_error(strprintf("server returned HTTP error %d", response.status)); else if (response.body.empty()) throw std::runtime_error("no response from server"); // Parse reply UniValue valReply(UniValue::VSTR); if (!valReply.read(response.body)) throw std::runtime_error("couldn't parse reply from server"); const UniValue& reply = valReply.get_obj(); if (reply.empty()) throw std::runtime_error("expected reply to have result, error and id properties"); return reply; }