git / moonbite-core / src/bitcoin-cli.cpp · raw
// Copyright (c) 2009-2010 Satoshi Nakamoto// Copyright (c) 2009-2020 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#if defined(HAVE_CONFIG_H)#include <config/bitcoin-config.h>#endif#include <chainparamsbase.h>#include <clientversion.h>#include <optional.h>#include <rpc/client.h>#include <rpc/mining.h>#include <rpc/protocol.h>#include <rpc/request.h>#include <tinyformat.h>#include <util/strencodings.h>#include <util/system.h>#include <util/translation.h>#include <util/url.h>#include <algorithm>#include <functional>#include <memory>#include <stdio.h>#include <string>#include <tuple>#include <event2/buffer.h>#include <event2/keyvalq_struct.h>#include <support/events.h>#include <univalue.h>#include <compat/stdin.h>const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;UrlDecodeFn* const URL_DECODE = urlDecode;static const char DEFAULT_RPCCONNECT[] = "127.0.0.1";static const int DEFAULT_HTTP_CLIENT_TIMEOUT=900;static const bool DEFAULT_NAMED=false;static const int CONTINUE_EXECUTION=-1;/** Default number of blocks to generate for RPC generatetoaddress. */static const std::string DEFAULT_NBLOCKS = "1";static void SetupCliArgs(ArgsManager& argsman){ SetupHelpOptions(argsman); const auto defaultBaseParams = CreateBaseChainParams(CBaseChainParams::MAIN); const auto testnetBaseParams = CreateBaseChainParams(CBaseChainParams::TESTNET); const auto signetBaseParams = CreateBaseChainParams(CBaseChainParams::SIGNET); const auto regtestBaseParams = CreateBaseChainParams(CBaseChainParams::REGTEST); argsman.AddArg("-version", "Print version and exit", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-conf=<file>", strprintf("Specify configuration file. Relative paths will be prefixed by datadir location. (default: %s)", BITCOIN_CONF_FILENAME), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-datadir=<dir>", "Specify data directory", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-generate", strprintf("Generate blocks immediately, equivalent to RPC generatenewaddress followed by RPC generatetoaddress. Optional positional integer arguments are number of blocks to generate (default: %s) and maximum iterations to try (default: %s), equivalent to RPC generatetoaddress nblocks and maxtries arguments. Example: litecoin-cli -generate 4 1000", DEFAULT_NBLOCKS, DEFAULT_MAX_TRIES), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-getinfo", "Get general information from the remote server. Note that unlike server-side RPC calls, the results of -getinfo is the result of multiple non-atomic requests. Some entries in the result may represent results from different states (e.g. wallet balance may be as of a different block from the chain state reported)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-netinfo", "Get network peer connection information from the remote server. An optional integer argument from 0 to 4 can be passed for different peers listings (default: 0).", ArgsManager::ALLOW_INT, OptionsCategory::OPTIONS); SetupChainParamsBaseOptions(argsman); argsman.AddArg("-named", strprintf("Pass named instead of positional arguments (default: %s)", DEFAULT_NAMED), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcclienttimeout=<n>", strprintf("Timeout in seconds during HTTP requests, or 0 for no timeout. (default: %d)", DEFAULT_HTTP_CLIENT_TIMEOUT), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcconnect=<ip>", strprintf("Send commands to node running on <ip> (default: %s)", DEFAULT_RPCCONNECT), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpccookiefile=<loc>", "Location of the auth cookie. Relative paths will be prefixed by a net-specific datadir location. (default: data dir)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcpassword=<pw>", "Password for JSON-RPC connections", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcport=<port>", strprintf("Connect to JSON-RPC on <port> (default: %u, testnet: %u, signet: %u, regtest: %u)", defaultBaseParams->RPCPort(), testnetBaseParams->RPCPort(), signetBaseParams->RPCPort(), regtestBaseParams->RPCPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcuser=<user>", "Username for JSON-RPC connections", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcwait", "Wait for RPC server to start", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-rpcwallet=<walletname>", "Send RPC for non-default wallet on RPC server (needs to exactly match corresponding -wallet option passed to litecoind). This changes the RPC endpoint used, e.g. http://127.0.0.1:8332/wallet/<walletname>", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-stdin", "Read extra arguments from standard input, one per line until EOF/Ctrl-D (recommended for sensitive information such as passphrases). When combined with -stdinrpcpass, the first line from standard input is used for the RPC password.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-stdinrpcpass", "Read RPC password from standard input as a single line. When combined with -stdin, the first line from standard input is used for the RPC password. When combined with -stdinwalletpassphrase, -stdinrpcpass consumes the first line, and -stdinwalletpassphrase consumes the second.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS); argsman.AddArg("-stdinwalletpassphrase", "Read wallet passphrase from standard input as a single line. When combined with -stdin, the first line from standard input is used for the wallet passphrase.", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);}/** libevent event log callback */static void libevent_log_cb(int severity, const char *msg){#ifndef EVENT_LOG_ERR // EVENT_LOG_ERR was added in 2.0.19; but before then _EVENT_LOG_ERR existed.# define EVENT_LOG_ERR _EVENT_LOG_ERR#endif // Ignore everything other than errors if (severity >= EVENT_LOG_ERR) { throw std::runtime_error(strprintf("libevent error: %s", msg)); }}//// Exception thrown on connection error. This error is used to determine// when to wait if -rpcwait is given.//class CConnectionFailed : public std::runtime_error{public: explicit inline CConnectionFailed(const std::string& msg) : std::runtime_error(msg) {}};//// This function returns either one of EXIT_ codes when it's expected to stop the process or// CONTINUE_EXECUTION when it's expected to continue further.//static int AppInitRPC(int argc, char* argv[]){ SetupCliArgs(gArgs); std::string error; if (!gArgs.ParseParameters(argc, argv, error)) { tfm::format(std::cerr, "Error parsing command line arguments: %s\n", error); return EXIT_FAILURE; } if (argc < 2 || HelpRequested(gArgs) || gArgs.IsArgSet("-version")) { std::string strUsage = PACKAGE_NAME " RPC client version " + FormatFullVersion() + "\n"; if (!gArgs.IsArgSet("-version")) { strUsage += "\n" "Usage: litecoin-cli [options] <command> [params] Send command to " PACKAGE_NAME "\n" "or: litecoin-cli [options] -named <command> [name=value]... Send command to " PACKAGE_NAME " (with named arguments)\n" "or: litecoin-cli [options] help List commands\n" "or: litecoin-cli [options] help <command> Get help for a command\n"; strUsage += "\n" + gArgs.GetHelpMessage(); } tfm::format(std::cout, "%s", strUsage); if (argc < 2) { tfm::format(std::cerr, "Error: too few parameters\n"); return EXIT_FAILURE; } return EXIT_SUCCESS; } if (!CheckDataDirOption()) { tfm::format(std::cerr, "Error: Specified data directory \"%s\" does not exist.\n", gArgs.GetArg("-datadir", "")); return EXIT_FAILURE; } if (!gArgs.ReadConfigFiles(error, true)) { tfm::format(std::cerr, "Error reading configuration file: %s\n", error); return EXIT_FAILURE; } // Check for chain settings (BaseParams() calls are only valid after this clause) try { SelectBaseParams(gArgs.GetChainName()); } catch (const std::exception& e) { tfm::format(std::cerr, "Error: %s\n", e.what()); return EXIT_FAILURE; } return CONTINUE_EXECUTION;}/** Reply structure for request_done to fill in */struct HTTPReply{ HTTPReply(): status(0), error(-1) {} int status; int error; std::string body;};static std::string http_errorstring(int code){ switch(code) {#if LIBEVENT_VERSION_NUMBER >= 0x02010300 case EVREQ_HTTP_TIMEOUT: return "timeout reached"; case EVREQ_HTTP_EOF: return "EOF reached"; case EVREQ_HTTP_INVALID_HEADER: return "error while reading header, or invalid header"; case EVREQ_HTTP_BUFFER_ERROR: return "error encountered while reading or writing"; case EVREQ_HTTP_REQUEST_CANCEL: return "request was canceled"; case EVREQ_HTTP_DATA_TOO_LONG: return "response body is larger than allowed";#endif default: return "unknown"; }}static void http_request_done(struct evhttp_request *req, void *ctx){ HTTPReply *reply = static_cast<HTTPReply*>(ctx); if (req == nullptr) { /* If req is nullptr, it means an error occurred while connecting: the * error code will have been passed to http_error_cb. */ reply->status = 0; return; } reply->status = evhttp_request_get_response_code(req); struct evbuffer *buf = evhttp_request_get_input_buffer(req); if (buf) { size_t size = evbuffer_get_length(buf); const char *data = (const char*)evbuffer_pullup(buf, size); if (data) reply->body = std::string(data, size); evbuffer_drain(buf, size); }}#if LIBEVENT_VERSION_NUMBER >= 0x02010300static void http_error_cb(enum evhttp_request_error err, void *ctx){ HTTPReply *reply = static_cast<HTTPReply*>(ctx); reply->error = err;}#endif/** Class that handles the conversion from a command-line to a JSON-RPC request, * as well as converting back to a JSON object that can be shown as result. */class BaseRequestHandler{public: virtual ~BaseRequestHandler() {} virtual UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) = 0; virtual UniValue ProcessReply(const UniValue &batch_in) = 0;};/** Process getinfo requests */class GetinfoRequestHandler: public BaseRequestHandler{public: const int ID_NETWORKINFO = 0; const int ID_BLOCKCHAININFO = 1; const int ID_WALLETINFO = 2; const int ID_BALANCES = 3; /** Create a simulated `getinfo` request. */ UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override { if (!args.empty()) { throw std::runtime_error("-getinfo takes no arguments"); } UniValue result(UniValue::VARR); result.push_back(JSONRPCRequestObj("getnetworkinfo", NullUniValue, ID_NETWORKINFO)); result.push_back(JSONRPCRequestObj("getblockchaininfo", NullUniValue, ID_BLOCKCHAININFO)); result.push_back(JSONRPCRequestObj("getwalletinfo", NullUniValue, ID_WALLETINFO)); result.push_back(JSONRPCRequestObj("getbalances", NullUniValue, ID_BALANCES)); return result; } /** Collect values from the batch and form a simulated `getinfo` reply. */ UniValue ProcessReply(const UniValue &batch_in) override { UniValue result(UniValue::VOBJ); const std::vector<UniValue> batch = JSONRPCProcessBatchReply(batch_in); // Errors in getnetworkinfo() and getblockchaininfo() are fatal, pass them on; // getwalletinfo() and getbalances() are allowed to fail if there is no wallet. if (!batch[ID_NETWORKINFO]["error"].isNull()) { return batch[ID_NETWORKINFO]; } if (!batch[ID_BLOCKCHAININFO]["error"].isNull()) { return batch[ID_BLOCKCHAININFO]; } result.pushKV("version", batch[ID_NETWORKINFO]["result"]["version"]); result.pushKV("blocks", batch[ID_BLOCKCHAININFO]["result"]["blocks"]); result.pushKV("headers", batch[ID_BLOCKCHAININFO]["result"]["headers"]); result.pushKV("verificationprogress", batch[ID_BLOCKCHAININFO]["result"]["verificationprogress"]); result.pushKV("timeoffset", batch[ID_NETWORKINFO]["result"]["timeoffset"]); UniValue connections(UniValue::VOBJ); connections.pushKV("in", batch[ID_NETWORKINFO]["result"]["connections_in"]); connections.pushKV("out", batch[ID_NETWORKINFO]["result"]["connections_out"]); connections.pushKV("total", batch[ID_NETWORKINFO]["result"]["connections"]); result.pushKV("connections", connections); result.pushKV("proxy", batch[ID_NETWORKINFO]["result"]["networks"][0]["proxy"]); result.pushKV("difficulty", batch[ID_BLOCKCHAININFO]["result"]["difficulty"]); result.pushKV("chain", UniValue(batch[ID_BLOCKCHAININFO]["result"]["chain"])); if (!batch[ID_WALLETINFO]["result"].isNull()) { result.pushKV("keypoolsize", batch[ID_WALLETINFO]["result"]["keypoolsize"]); if (!batch[ID_WALLETINFO]["result"]["unlocked_until"].isNull()) { result.pushKV("unlocked_until", batch[ID_WALLETINFO]["result"]["unlocked_until"]); } result.pushKV("paytxfee", batch[ID_WALLETINFO]["result"]["paytxfee"]); } if (!batch[ID_BALANCES]["result"].isNull()) { result.pushKV("balance", batch[ID_BALANCES]["result"]["mine"]["trusted"]); } result.pushKV("relayfee", batch[ID_NETWORKINFO]["result"]["relayfee"]); result.pushKV("warnings", batch[ID_NETWORKINFO]["result"]["warnings"]); return JSONRPCReplyObj(result, NullUniValue, 1); }};/** Process netinfo requests */class NetinfoRequestHandler : public BaseRequestHandler{private: static constexpr int8_t UNKNOWN_NETWORK{-1}; static constexpr uint8_t m_networks_size{3}; const std::array<std::string, m_networks_size> m_networks{{"ipv4", "ipv6", "onion"}}; std::array<std::array<uint16_t, m_networks_size + 2>, 3> m_counts{{{}}}; //!< Peer counts by (in/out/total, networks/total/block-relay) int8_t NetworkStringToId(const std::string& str) const { for (uint8_t i = 0; i < m_networks_size; ++i) { if (str == m_networks.at(i)) return i; } return UNKNOWN_NETWORK; } uint8_t m_details_level{0}; //!< Optional user-supplied arg to set dashboard details level bool DetailsRequested() const { return m_details_level > 0 && m_details_level < 5; } bool IsAddressSelected() const { return m_details_level == 2 || m_details_level == 4; } bool IsVersionSelected() const { return m_details_level == 3 || m_details_level == 4; } bool m_is_asmap_on{false}; size_t m_max_addr_length{0}; size_t m_max_age_length{4}; size_t m_max_id_length{2}; struct Peer { std::string addr; std::string sub_version; std::string network; std::string age; double min_ping; double ping; int64_t last_blck; int64_t last_recv; int64_t last_send; int64_t last_trxn; int id; int mapped_as; int version; bool is_block_relay; bool is_outbound; bool operator<(const Peer& rhs) const { return std::tie(is_outbound, min_ping) < std::tie(rhs.is_outbound, rhs.min_ping); } }; std::vector<Peer> m_peers; std::string ChainToString() const { if (gArgs.GetChainName() == CBaseChainParams::TESTNET) return " testnet"; if (gArgs.GetChainName() == CBaseChainParams::SIGNET) return " signet"; if (gArgs.GetChainName() == CBaseChainParams::REGTEST) return " regtest"; return ""; } std::string PingTimeToString(double seconds) const { if (seconds < 0) return ""; const double milliseconds{round(1000 * seconds)}; return milliseconds > 999999 ? "-" : ToString(milliseconds); } const int64_t m_time_now{GetSystemTimeInSeconds()};public: static constexpr int ID_PEERINFO = 0; static constexpr int ID_NETWORKINFO = 1; UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override { if (!args.empty()) { uint8_t n{0}; if (ParseUInt8(args.at(0), &n)) { m_details_level = n; } } UniValue result(UniValue::VARR); result.push_back(JSONRPCRequestObj("getpeerinfo", NullUniValue, ID_PEERINFO)); result.push_back(JSONRPCRequestObj("getnetworkinfo", NullUniValue, ID_NETWORKINFO)); return result; } UniValue ProcessReply(const UniValue& batch_in) override { const std::vector<UniValue> batch{JSONRPCProcessBatchReply(batch_in)}; if (!batch[ID_PEERINFO]["error"].isNull()) return batch[ID_PEERINFO]; if (!batch[ID_NETWORKINFO]["error"].isNull()) return batch[ID_NETWORKINFO]; const UniValue& networkinfo{batch[ID_NETWORKINFO]["result"]}; if (networkinfo["version"].get_int() < 209900) { throw std::runtime_error("-netinfo requires litecoind server to be running v0.21.0 and up"); } // Count peer connection totals, and if DetailsRequested(), store peer data in a vector of structs. for (const UniValue& peer : batch[ID_PEERINFO]["result"].getValues()) { const std::string network{peer["network"].get_str()}; const int8_t network_id{NetworkStringToId(network)}; if (network_id == UNKNOWN_NETWORK) continue; const bool is_outbound{!peer["inbound"].get_bool()}; const bool is_block_relay{!peer["relaytxes"].get_bool()}; ++m_counts.at(is_outbound).at(network_id); // in/out by network ++m_counts.at(is_outbound).at(m_networks_size); // in/out overall ++m_counts.at(2).at(network_id); // total by network ++m_counts.at(2).at(m_networks_size); // total overall if (is_block_relay) { ++m_counts.at(is_outbound).at(m_networks_size + 1); // in/out block-relay ++m_counts.at(2).at(m_networks_size + 1); // total block-relay } if (DetailsRequested()) { // Push data for this peer to the peers vector. const int peer_id{peer["id"].get_int()}; const int mapped_as{peer["mapped_as"].isNull() ? 0 : peer["mapped_as"].get_int()}; const int version{peer["version"].get_int()}; const int64_t conn_time{peer["conntime"].get_int64()}; const int64_t last_blck{peer["last_block"].get_int64()}; const int64_t last_recv{peer["lastrecv"].get_int64()}; const int64_t last_send{peer["lastsend"].get_int64()}; const int64_t last_trxn{peer["last_transaction"].get_int64()}; const double min_ping{peer["minping"].isNull() ? -1 : peer["minping"].get_real()}; const double ping{peer["pingtime"].isNull() ? -1 : peer["pingtime"].get_real()}; const std::string addr{peer["addr"].get_str()}; const std::string age{conn_time == 0 ? "" : ToString((m_time_now - conn_time) / 60)}; const std::string sub_version{peer["subver"].get_str()}; m_peers.push_back({addr, sub_version, network, age, min_ping, ping, last_blck, last_recv, last_send, last_trxn, peer_id, mapped_as, version, is_block_relay, is_outbound}); m_max_addr_length = std::max(addr.length() + 1, m_max_addr_length); m_max_age_length = std::max(age.length(), m_max_age_length); m_max_id_length = std::max(ToString(peer_id).length(), m_max_id_length); m_is_asmap_on |= (mapped_as != 0); } } // Generate report header. std::string result{strprintf("%s %s%s - %i%s\n\n", PACKAGE_NAME, FormatFullVersion(), ChainToString(), networkinfo["protocolversion"].get_int(), networkinfo["subversion"].get_str())}; // Report detailed peer connections list sorted by direction and minimum ping time. if (DetailsRequested() && !m_peers.empty()) { std::sort(m_peers.begin(), m_peers.end()); result += strprintf("Peer connections sorted by direction and min ping\n<-> relay net mping ping send recv txn blk %*s ", m_max_age_length, "age"); if (m_is_asmap_on) result += " asmap "; result += strprintf("%*s %-*s%s\n", m_max_id_length, "id", IsAddressSelected() ? m_max_addr_length : 0, IsAddressSelected() ? "address" : "", IsVersionSelected() ? "version" : ""); for (const Peer& peer : m_peers) { std::string version{ToString(peer.version) + peer.sub_version}; result += strprintf( "%3s %5s %5s%7s%7s%5s%5s%5s%5s %*s%*i %*s %-*s%s\n", peer.is_outbound ? "out" : "in", peer.is_block_relay ? "block" : "full", peer.network, PingTimeToString(peer.min_ping), PingTimeToString(peer.ping), peer.last_send == 0 ? "" : ToString(m_time_now - peer.last_send), peer.last_recv == 0 ? "" : ToString(m_time_now - peer.last_recv), peer.last_trxn == 0 ? "" : ToString((m_time_now - peer.last_trxn) / 60), peer.last_blck == 0 ? "" : ToString((m_time_now - peer.last_blck) / 60), m_max_age_length, // variable spacing peer.age, m_is_asmap_on ? 7 : 0, // variable spacing m_is_asmap_on && peer.mapped_as != 0 ? ToString(peer.mapped_as) : "", m_max_id_length, // variable spacing peer.id, IsAddressSelected() ? m_max_addr_length : 0, // variable spacing IsAddressSelected() ? peer.addr : "", IsVersionSelected() && version != "0" ? version : ""); } result += strprintf(" ms ms sec sec min min %*s\n\n", m_max_age_length, "min"); } // Report peer connection totals by type. result += " ipv4 ipv6 onion total block-relay\n"; const std::array<std::string, 3> rows{{"in", "out", "total"}}; for (uint8_t i = 0; i < m_networks_size; ++i) { result += strprintf("%-5s %5i %5i %5i %5i %5i\n", rows.at(i), m_counts.at(i).at(0), m_counts.at(i).at(1), m_counts.at(i).at(2), m_counts.at(i).at(m_networks_size), m_counts.at(i).at(m_networks_size + 1)); } // Report local addresses, ports, and scores. result += "\nLocal addresses"; const std::vector<UniValue>& local_addrs{networkinfo["localaddresses"].getValues()}; if (local_addrs.empty()) { result += ": n/a\n"; } else { size_t max_addr_size{0}; for (const UniValue& addr : local_addrs) { max_addr_size = std::max(addr["address"].get_str().length() + 1, max_addr_size); } for (const UniValue& addr : local_addrs) { result += strprintf("\n%-*s port %6i score %6i", max_addr_size, addr["address"].get_str(), addr["port"].get_int(), addr["score"].get_int()); } } return JSONRPCReplyObj(UniValue{result}, NullUniValue, 1); }};/** Process RPC generatetoaddress request. */class GenerateToAddressRequestHandler : public BaseRequestHandler{public: UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override { address_str = args.at(1); UniValue params{RPCConvertValues("generatetoaddress", args)}; return JSONRPCRequestObj("generatetoaddress", params, 1); } UniValue ProcessReply(const UniValue &reply) override { UniValue result(UniValue::VOBJ); result.pushKV("address", address_str); result.pushKV("blocks", reply.get_obj()["result"]); return JSONRPCReplyObj(result, NullUniValue, 1); }protected: std::string address_str;};/** Process default single requests */class DefaultRequestHandler: public BaseRequestHandler {public: UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override { UniValue params; if(gArgs.GetBoolArg("-named", DEFAULT_NAMED)) { params = RPCConvertNamedValues(method, args); } else { params = RPCConvertValues(method, args); } return JSONRPCRequestObj(method, params, 1); } UniValue ProcessReply(const UniValue &reply) override { return reply.get_obj(); }};static UniValue CallRPC(BaseRequestHandler* rh, const std::string& strMethod, const std::vector<std::string>& args, const Optional<std::string>& rpcwallet = {}){ 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); // Set connection timeout { const int timeout = gArgs.GetArg("-rpcclienttimeout", DEFAULT_HTTP_CLIENT_TIMEOUT); if (timeout > 0) { evhttp_connection_set_timeout(evcon.get(), timeout); } else { // Indefinite request timeouts are not possible in libevent-http, so we // set the timeout to a very long time period instead. constexpr int YEAR_IN_SECONDS = 31556952; // Average length of year in Gregorian calendar evhttp_connection_set_timeout(evcon.get(), 5 * YEAR_IN_SECONDS); } } 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, "Content-Type", "application/json"); 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 (rpcwallet) { char* encodedURI = evhttp_uriencode(rpcwallet->data(), rpcwallet->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 litecoind 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())); } 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;}/** * ConnectAndCallRPC wraps CallRPC with -rpcwait and an exception handler. * * @param[in] rh Pointer to RequestHandler. * @param[in] strMethod Reference to const string method to forward to CallRPC. * @param[in] rpcwallet Reference to const optional string wallet name to forward to CallRPC. * @returns the RPC response as a UniValue object. * @throws a CConnectionFailed std::runtime_error if connection failed or RPC server still in warmup. */static UniValue ConnectAndCallRPC(BaseRequestHandler* rh, const std::string& strMethod, const std::vector<std::string>& args, const Optional<std::string>& rpcwallet = {}){ UniValue response(UniValue::VOBJ); // Execute and handle connection failures with -rpcwait. const bool fWait = gArgs.GetBoolArg("-rpcwait", false); do { try { response = CallRPC(rh, strMethod, args, rpcwallet); if (fWait) { const UniValue& error = find_value(response, "error"); if (!error.isNull() && error["code"].get_int() == RPC_IN_WARMUP) { throw CConnectionFailed("server in warmup"); } } break; // Connection succeeded, no need to retry. } catch (const CConnectionFailed&) { if (fWait) { UninterruptibleSleep(std::chrono::milliseconds{1000}); } else { throw; } } } while (fWait); return response;}/** Parse UniValue result to update the message to print to std::cout. */static void ParseResult(const UniValue& result, std::string& strPrint){ if (result.isNull()) return; strPrint = result.isStr() ? result.get_str() : result.write(2);}/** Parse UniValue error to update the message to print to std::cerr and the code to return. */static void ParseError(const UniValue& error, std::string& strPrint, int& nRet){ if (error.isObject()) { const UniValue& err_code = find_value(error, "code"); const UniValue& err_msg = find_value(error, "message"); if (!err_code.isNull()) { strPrint = "error code: " + err_code.getValStr() + "\n"; } if (err_msg.isStr()) { strPrint += ("error message:\n" + err_msg.get_str()); } if (err_code.isNum() && err_code.get_int() == RPC_WALLET_NOT_SPECIFIED) { strPrint += "\nTry adding \"-rpcwallet=<filename>\" option to litecoin-cli command line."; } } else { strPrint = "error: " + error.write(); } nRet = abs(error["code"].get_int());}/** * GetWalletBalances calls listwallets; if more than one wallet is loaded, it then * fetches mine.trusted balances for each loaded wallet and pushes them to `result`. * * @param result Reference to UniValue object the wallet names and balances are pushed to. */static void GetWalletBalances(UniValue& result){ DefaultRequestHandler rh; const UniValue listwallets = ConnectAndCallRPC(&rh, "listwallets", /* args=*/{}); if (!find_value(listwallets, "error").isNull()) return; const UniValue& wallets = find_value(listwallets, "result"); if (wallets.size() <= 1) return; UniValue balances(UniValue::VOBJ); for (const UniValue& wallet : wallets.getValues()) { const std::string wallet_name = wallet.get_str(); const UniValue getbalances = ConnectAndCallRPC(&rh, "getbalances", /* args=*/{}, wallet_name); const UniValue& balance = find_value(getbalances, "result")["mine"]["trusted"]; balances.pushKV(wallet_name, balance); } result.pushKV("balances", balances);}/** * Call RPC getnewaddress. * @returns getnewaddress response as a UniValue object. */static UniValue GetNewAddress(){ Optional<std::string> wallet_name{}; if (gArgs.IsArgSet("-rpcwallet")) wallet_name = gArgs.GetArg("-rpcwallet", ""); DefaultRequestHandler rh; return ConnectAndCallRPC(&rh, "getnewaddress", /* args=*/{}, wallet_name);}/** * Check bounds and set up args for RPC generatetoaddress params: nblocks, address, maxtries. * @param[in] address Reference to const string address to insert into the args. * @param args Reference to vector of string args to modify. */static void SetGenerateToAddressArgs(const std::string& address, std::vector<std::string>& args){ if (args.size() > 2) throw std::runtime_error("too many arguments (maximum 2 for nblocks and maxtries)"); if (args.size() == 0) { args.emplace_back(DEFAULT_NBLOCKS); } else if (args.at(0) == "0") { throw std::runtime_error("the first argument (number of blocks to generate, default: " + DEFAULT_NBLOCKS + ") must be an integer value greater than zero"); } args.emplace(args.begin() + 1, address);}static int CommandLineRPC(int argc, char *argv[]){ std::string strPrint; int nRet = 0; try { // Skip switches while (argc > 1 && IsSwitchChar(argv[1][0])) { argc--; argv++; } std::string rpcPass; if (gArgs.GetBoolArg("-stdinrpcpass", false)) { NO_STDIN_ECHO(); if (!StdinReady()) { fputs("RPC password> ", stderr); fflush(stderr); } if (!std::getline(std::cin, rpcPass)) { throw std::runtime_error("-stdinrpcpass specified but failed to read from standard input"); } if (StdinTerminal()) { fputc('\n', stdout); } gArgs.ForceSetArg("-rpcpassword", rpcPass); } std::vector<std::string> args = std::vector<std::string>(&argv[1], &argv[argc]); if (gArgs.GetBoolArg("-stdinwalletpassphrase", false)) { NO_STDIN_ECHO(); std::string walletPass; if (args.size() < 1 || args[0].substr(0, 16) != "walletpassphrase") { throw std::runtime_error("-stdinwalletpassphrase is only applicable for walletpassphrase(change)"); } if (!StdinReady()) { fputs("Wallet passphrase> ", stderr); fflush(stderr); } if (!std::getline(std::cin, walletPass)) { throw std::runtime_error("-stdinwalletpassphrase specified but failed to read from standard input"); } if (StdinTerminal()) { fputc('\n', stdout); } args.insert(args.begin() + 1, walletPass); } if (gArgs.GetBoolArg("-stdin", false)) { // Read one arg per line from stdin and append std::string line; while (std::getline(std::cin, line)) { args.push_back(line); } if (StdinTerminal()) { fputc('\n', stdout); } } std::unique_ptr<BaseRequestHandler> rh; std::string method; if (gArgs.IsArgSet("-getinfo")) { rh.reset(new GetinfoRequestHandler()); } else if (gArgs.GetBoolArg("-netinfo", false)) { rh.reset(new NetinfoRequestHandler()); } else if (gArgs.GetBoolArg("-generate", false)) { const UniValue getnewaddress{GetNewAddress()}; const UniValue& error{find_value(getnewaddress, "error")}; if (error.isNull()) { SetGenerateToAddressArgs(find_value(getnewaddress, "result").get_str(), args); rh.reset(new GenerateToAddressRequestHandler()); } else { ParseError(error, strPrint, nRet); } } else { rh.reset(new DefaultRequestHandler()); if (args.size() < 1) { throw std::runtime_error("too few parameters (need at least command)"); } method = args[0]; args.erase(args.begin()); // Remove trailing method name from arguments vector } if (nRet == 0) { // Perform RPC call Optional<std::string> wallet_name{}; if (gArgs.IsArgSet("-rpcwallet")) wallet_name = gArgs.GetArg("-rpcwallet", ""); const UniValue reply = ConnectAndCallRPC(rh.get(), method, args, wallet_name); // Parse reply UniValue result = find_value(reply, "result"); const UniValue& error = find_value(reply, "error"); if (error.isNull()) { if (gArgs.IsArgSet("-getinfo") && !gArgs.IsArgSet("-rpcwallet")) { GetWalletBalances(result); // fetch multiwallet balances and append to result } ParseResult(result, strPrint); } else { ParseError(error, strPrint, nRet); } } } catch (const std::exception& e) { strPrint = std::string("error: ") + e.what(); nRet = EXIT_FAILURE; } catch (...) { PrintExceptionContinue(nullptr, "CommandLineRPC()"); throw; } if (strPrint != "") { tfm::format(nRet == 0 ? std::cout : std::cerr, "%s\n", strPrint); } return nRet;}#ifdef WIN32// Export main() and ensure working ASLR on Windows.// Exporting a symbol will prevent the linker from stripping// the .reloc section from the binary, which is a requirement// for ASLR. This is a temporary workaround until a fixed// version of binutils is used for releases.__declspec(dllexport) int main(int argc, char* argv[]){ util::WinCmdLineArgs winArgs; std::tie(argc, argv) = winArgs.get();#elseint main(int argc, char* argv[]){#endif SetupEnvironment(); if (!SetupNetworking()) { tfm::format(std::cerr, "Error: Initializing networking failed\n"); return EXIT_FAILURE; } event_set_log_callback(&libevent_log_cb); try { int ret = AppInitRPC(argc, argv); if (ret != CONTINUE_EXECUTION) return ret; } catch (const std::exception& e) { PrintExceptionContinue(&e, "AppInitRPC()"); return EXIT_FAILURE; } catch (...) { PrintExceptionContinue(nullptr, "AppInitRPC()"); return EXIT_FAILURE; } int ret = EXIT_FAILURE; try { ret = CommandLineRPC(argc, argv); } catch (const std::exception& e) { PrintExceptionContinue(&e, "CommandLineRPC()"); } catch (...) { PrintExceptionContinue(nullptr, "CommandLineRPC()"); } return ret;}