// Copyright (c) 2010 Satoshi Nakamoto // Copyright (c) 2009-2012 The Bitcoin developers // Distributed under the MIT/X11 software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include "chainparams.h" #include "init.h" #include "util.h" #include "sync.h" #include "ui_interface.h" #include "base58.h" #include "bitcoinrpc.h" #include "db.h" #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using namespace boost; using namespace boost::asio; using namespace json_spirit; static std::string strRPCUserColonPass; // These are created by StartRPCThreads, destroyed in StopRPCThreads static asio::io_service* rpc_io_service = NULL; static map > deadlineTimers; static ssl::context* rpc_ssl_context = NULL; static boost::thread_group* rpc_worker_group = NULL; Object JSONRPCError(int code, const string& message) { Object error; error.push_back(Pair("code", code)); error.push_back(Pair("message", message)); return error; } void RPCTypeCheck(const Array& params, const list& typesExpected, bool fAllowNull) { unsigned int i = 0; BOOST_FOREACH(Value_type t, typesExpected) { if (params.size() <= i) break; const Value& v = params[i]; if (!((v.type() == t) || (fAllowNull && (v.type() == null_type)))) { string err = strprintf("Expected type %s, got %s", Value_type_name[t], Value_type_name[v.type()]); throw JSONRPCError(RPC_TYPE_ERROR, err); } i++; } } void RPCTypeCheck(const Object& o, const map& typesExpected, bool fAllowNull) { BOOST_FOREACH(const PAIRTYPE(string, Value_type)& t, typesExpected) { const Value& v = find_value(o, t.first); if (!fAllowNull && v.type() == null_type) throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first.c_str())); if (!((v.type() == t.second) || (fAllowNull && (v.type() == null_type)))) { string err = strprintf("Expected type %s for %s, got %s", Value_type_name[t.second], t.first.c_str(), Value_type_name[v.type()]); throw JSONRPCError(RPC_TYPE_ERROR, err); } } } int64 AmountFromValue(const Value& value) { double dAmount = value.get_real(); if (dAmount <= 0.0 || dAmount > 21000000.0) throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount"); int64 nAmount = roundint64(dAmount * COIN); if (!MoneyRange(nAmount)) throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount"); return nAmount; } Value ValueFromAmount(int64 amount) { return (double)amount / (double)COIN; } std::string HexBits(unsigned int nBits) { union { int32_t nBits; char cBits[4]; } uBits; uBits.nBits = htonl((int32_t)nBits); return HexStr(BEGIN(uBits.cBits), END(uBits.cBits)); } uint256 ParseHashV(const Value& v, string strName) { string strHex; if (v.type() == str_type) strHex = v.get_str(); if (!IsHex(strHex)) // Note: IsHex("") is false throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')"); uint256 result; result.SetHex(strHex); return result; } uint256 ParseHashO(const Object& o, string strKey) { return ParseHashV(find_value(o, strKey), strKey); } vector ParseHexV(const Value& v, string strName) { string strHex; if (v.type() == str_type) strHex = v.get_str(); if (!IsHex(strHex)) throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')"); return ParseHex(strHex); } vector ParseHexO(const Object& o, string strKey) { return ParseHexV(find_value(o, strKey), strKey); } /// /// Note: This interface may still be subject to change. /// string CRPCTable::help(string strCommand) const { string strRet; set setDone; for (map::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi) { const CRPCCommand *pcmd = mi->second; string strMethod = mi->first; // We already filter duplicates, but these deprecated screw up the sort order if (strMethod.find("label") != string::npos) continue; if (strCommand != "" && strMethod != strCommand) continue; try { Array params; rpcfn_type pfn = pcmd->actor; if (setDone.insert(pfn).second) (*pfn)(params, true); } catch (std::exception& e) { // Help text is returned in an exception string strHelp = string(e.what()); if (strCommand == "") if (strHelp.find('\n') != string::npos) strHelp = strHelp.substr(0, strHelp.find('\n')); strRet += strHelp + "\n"; } } if (strRet == "") strRet = strprintf("help: unknown command: %s\n", strCommand.c_str()); strRet = strRet.substr(0,strRet.size()-1); return strRet; } Value help(const Array& params, bool fHelp) { if (fHelp || params.size() > 1) throw runtime_error( "help [command]\n" "List commands, or get help for a command."); string strCommand; if (params.size() > 0) strCommand = params[0].get_str(); return tableRPC.help(strCommand); } Value stop(const Array& params, bool fHelp) { // Accept the deprecated and ignored 'detach' boolean argument if (fHelp || params.size() > 1) throw runtime_error( "stop\n" "Stop Bitcoin server."); // Shutdown will take long enough that the response should get back StartShutdown(); return "Bitcoin server stopping"; } // // Call Table // static const CRPCCommand vRPCCommands[] = { // name actor (function) okSafeMode threadSafe // ------------------------ ----------------------- ---------- ---------- { "help", &help, true, true }, { "stop", &stop, true, true }, { "getblockcount", &getblockcount, true, false }, { "getbestblockhash", &getbestblockhash, true, false }, { "getconnectioncount", &getconnectioncount, true, false }, { "getpeerinfo", &getpeerinfo, true, false }, { "addnode", &addnode, true, true }, { "getaddednodeinfo", &getaddednodeinfo, true, true }, { "getdifficulty", &getdifficulty, true, false }, { "getgenerate", &getgenerate, true, false }, { "setgenerate", &setgenerate, true, false }, { "gethashespersec", &gethashespersec, true, false }, { "getinfo", &getinfo, true, false }, { "getmininginfo", &getmininginfo, true, false }, { "getnewaddress", &getnewaddress, true, false }, { "getaccountaddress", &getaccountaddress, true, false }, { "getrawchangeaddress", &getrawchangeaddress, true, false }, { "setaccount", &setaccount, true, false }, { "getaccount", &getaccount, false, false }, { "getaddressesbyaccount", &getaddressesbyaccount, true, false }, { "sendtoaddress", &sendtoaddress, false, false }, { "getreceivedbyaddress", &getreceivedbyaddress, false, false }, { "getreceivedbyaccount", &getreceivedbyaccount, false, false }, { "listreceivedbyaddress", &listreceivedbyaddress, false, false }, { "listreceivedbyaccount", &listreceivedbyaccount, false, false }, { "backupwallet", &backupwallet, true, false }, { "keypoolrefill", &keypoolrefill, true, false }, { "walletpassphrase", &walletpassphrase, true, false }, { "walletpassphrasechange", &walletpassphrasechange, false, false }, { "walletlock", &walletlock, true, false }, { "encryptwallet", &encryptwallet, false, false }, { "validateaddress", &validateaddress, true, false }, { "getbalance", &getbalance, false, false }, { "move", &movecmd, false, false }, { "sendfrom", &sendfrom, false, false }, { "sendmany", &sendmany, false, false }, { "addmultisigaddress", &addmultisigaddress, false, false }, { "createmultisig", &createmultisig, true, true }, { "getrawmempool", &getrawmempool, true, false }, { "getblock", &getblock, false, false }, { "getblockhash", &getblockhash, false, false }, { "gettransaction", &gettransaction, false, false }, { "listtransactions", &listtransactions, false, false }, { "listaddressgroupings", &listaddressgroupings, false, false }, { "signmessage", &signmessage, false, false }, { "verifymessage", &verifymessage, false, false }, { "getwork", &getwork, true, false }, { "listaccounts", &listaccounts, false, false }, { "settxfee", &settxfee, false, false }, { "getblocktemplate", &getblocktemplate, true, false }, { "submitblock", &submitblock, false, false }, { "listsinceblock", &listsinceblock, false, false }, { "dumpprivkey", &dumpprivkey, true, false }, { "dumpwallet", &dumpwallet, true, false }, { "importprivkey", &importprivkey, false, false }, { "importwallet", &importwallet, false, false }, { "listunspent", &listunspent, false, false }, { "getrawtransaction", &getrawtransaction, false, false }, { "createrawtransaction", &createrawtransaction, false, false }, { "decoderawtransaction", &decoderawtransaction, false, false }, { "decodescript", &decodescript, false, false }, { "signrawtransaction", &signrawtransaction, false, false }, { "sendrawtransaction", &sendrawtransaction, false, false }, { "gettxoutsetinfo", &gettxoutsetinfo, true, false }, { "gettxout", &gettxout, true, false }, { "lockunspent", &lockunspent, false, false }, { "listlockunspent", &listlockunspent, false, false }, { "verifychain", &verifychain, true, false }, }; CRPCTable::CRPCTable() { unsigned int vcidx; for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++) { const CRPCCommand *pcmd; pcmd = &vRPCCommands[vcidx]; mapCommands[pcmd->name] = pcmd; } } const CRPCCommand *CRPCTable::operator[](string name) const { map::const_iterator it = mapCommands.find(name); if (it == mapCommands.end()) return NULL; return (*it).second; } // // HTTP protocol // // This ain't Apache. We're just using HTTP header for the length field // and to be compatible with other JSON-RPC implementations. // string HTTPPost(const string& strMsg, const map& mapRequestHeaders) { ostringstream s; s << "POST / HTTP/1.1\r\n" << "User-Agent: bitcoin-json-rpc/" << FormatFullVersion() << "\r\n" << "Host: 127.0.0.1\r\n" << "Content-Type: application/json\r\n" << "Content-Length: " << strMsg.size() << "\r\n" << "Connection: close\r\n" << "Accept: application/json\r\n"; BOOST_FOREACH(const PAIRTYPE(string, string)& item, mapRequestHeaders) s << item.first << ": " << item.second << "\r\n"; s << "\r\n" << strMsg; return s.str(); } string rfc1123Time() { char buffer[64]; time_t now; time(&now); struct tm* now_gmt = gmtime(&now); string locale(setlocale(LC_TIME, NULL)); setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt); setlocale(LC_TIME, locale.c_str()); return string(buffer); } static string HTTPReply(int nStatus, const string& strMsg, bool keepalive) { if (nStatus == HTTP_UNAUTHORIZED) return strprintf("HTTP/1.0 401 Authorization Required\r\n" "Date: %s\r\n" "Server: bitcoin-json-rpc/%s\r\n" "WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n" "Content-Type: text/html\r\n" "Content-Length: 296\r\n" "\r\n" "\r\n" "\r\n" "\r\n" "Error\r\n" "\r\n" "\r\n" "

401 Unauthorized.

\r\n" "\r\n", rfc1123Time().c_str(), FormatFullVersion().c_str()); const char *cStatus; if (nStatus == HTTP_OK) cStatus = "OK"; else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request"; else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden"; else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found"; else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error"; else cStatus = ""; return strprintf( "HTTP/1.1 %d %s\r\n" "Date: %s\r\n" "Connection: %s\r\n" "Content-Length: %"PRIszu"\r\n" "Content-Type: application/json\r\n" "Server: bitcoin-json-rpc/%s\r\n" "\r\n" "%s", nStatus, cStatus, rfc1123Time().c_str(), keepalive ? "keep-alive" : "close", strMsg.size(), FormatFullVersion().c_str(), strMsg.c_str()); } bool ReadHTTPRequestLine(std::basic_istream& stream, int &proto, string& http_method, string& http_uri) { string str; getline(stream, str); // HTTP request line is space-delimited vector vWords; boost::split(vWords, str, boost::is_any_of(" ")); if (vWords.size() < 2) return false; // HTTP methods permitted: GET, POST http_method = vWords[0]; if (http_method != "GET" && http_method != "POST") return false; // HTTP URI must be an absolute path, relative to current host http_uri = vWords[1]; if (http_uri.size() == 0 || http_uri[0] != '/') return false; // parse proto, if present string strProto = ""; if (vWords.size() > 2) strProto = vWords[2]; proto = 0; const char *ver = strstr(strProto.c_str(), "HTTP/1."); if (ver != NULL) proto = atoi(ver+7); return true; } int ReadHTTPStatus(std::basic_istream& stream, int &proto) { string str; getline(stream, str); vector vWords; boost::split(vWords, str, boost::is_any_of(" ")); if (vWords.size() < 2) return HTTP_INTERNAL_SERVER_ERROR; proto = 0; const char *ver = strstr(str.c_str(), "HTTP/1."); if (ver != NULL) proto = atoi(ver+7); return atoi(vWords[1].c_str()); } int ReadHTTPHeaders(std::basic_istream& stream, map& mapHeadersRet) { int nLen = 0; while (true) { string str; std::getline(stream, str); if (str.empty() || str == "\r") break; string::size_type nColon = str.find(":"); if (nColon != string::npos) { string strHeader = str.substr(0, nColon); boost::trim(strHeader); boost::to_lower(strHeader); string strValue = str.substr(nColon+1); boost::trim(strValue); mapHeadersRet[strHeader] = strValue; if (strHeader == "content-length") nLen = atoi(strValue.c_str()); } } return nLen; } int ReadHTTPMessage(std::basic_istream& stream, map& mapHeadersRet, string& strMessageRet, int nProto) { mapHeadersRet.clear(); strMessageRet = ""; // Read header int nLen = ReadHTTPHeaders(stream, mapHeadersRet); if (nLen < 0 || nLen > (int)MAX_SIZE) return HTTP_INTERNAL_SERVER_ERROR; // Read message if (nLen > 0) { vector vch(nLen); stream.read(&vch[0], nLen); strMessageRet = string(vch.begin(), vch.end()); } string sConHdr = mapHeadersRet["connection"]; if ((sConHdr != "close") && (sConHdr != "keep-alive")) { if (nProto >= 1) mapHeadersRet["connection"] = "keep-alive"; else mapHeadersRet["connection"] = "close"; } return HTTP_OK; } bool HTTPAuthorized(map& mapHeaders) { string strAuth = mapHeaders["authorization"]; if (strAuth.substr(0,6) != "Basic ") return false; string strUserPass64 = strAuth.substr(6); boost::trim(strUserPass64); string strUserPass = DecodeBase64(strUserPass64); return TimingResistantEqual(strUserPass, strRPCUserColonPass); } // // JSON-RPC protocol. Bitcoin speaks version 1.0 for maximum compatibility, // but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were // unspecified (HTTP errors and contents of 'error'). // // 1.0 spec: http://json-rpc.org/wiki/specification // 1.2 spec: http://groups.google.com/group/json-rpc/web/json-rpc-over-http // http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx // string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id) { Object request; request.push_back(Pair("method", strMethod)); request.push_back(Pair("params", params)); request.push_back(Pair("id", id)); return write_string(Value(request), false) + "\n"; } Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id) { Object reply; if (error.type() != null_type) reply.push_back(Pair("result", Value::null)); else reply.push_back(Pair("result", result)); reply.push_back(Pair("error", error)); reply.push_back(Pair("id", id)); return reply; } string JSONRPCReply(const Value& result, const Value& error, const Value& id) { Object reply = JSONRPCReplyObj(result, error, id); return write_string(Value(reply), false) + "\n"; } void ErrorReply(std::ostream& stream, const Object& objError, const Value& id) { // Send error reply from json-rpc error object int nStatus = HTTP_INTERNAL_SERVER_ERROR; int code = find_value(objError, "code").get_int(); if (code == RPC_INVALID_REQUEST) nStatus = HTTP_BAD_REQUEST; else if (code == RPC_METHOD_NOT_FOUND) nStatus = HTTP_NOT_FOUND; string strReply = JSONRPCReply(Value::null, objError, id); stream << HTTPReply(nStatus, strReply, false) << std::flush; } bool ClientAllowed(const boost::asio::ip::address& address) { // Make sure that IPv4-compatible and IPv4-mapped IPv6 addresses are treated as IPv4 addresses if (address.is_v6() && (address.to_v6().is_v4_compatible() || address.to_v6().is_v4_mapped())) return ClientAllowed(address.to_v6().to_v4()); if (address == asio::ip::address_v4::loopback() || address == asio::ip::address_v6::loopback() || (address.is_v4() // Check whether IPv4 addresses match 127.0.0.0/8 (loopback subnet) && (address.to_v4().to_ulong() & 0xff000000) == 0x7f000000)) return true; const string strAddress = address.to_string(); const vector& vAllow = mapMultiArgs["-rpcallowip"]; BOOST_FOREACH(string strAllow, vAllow) if (WildcardMatch(strAddress, strAllow)) return true; return false; } // // IOStream device that speaks SSL but can also speak non-SSL // template class SSLIOStreamDevice : public iostreams::device { public: SSLIOStreamDevice(asio::ssl::stream &streamIn, bool fUseSSLIn) : stream(streamIn) { fUseSSL = fUseSSLIn; fNeedHandshake = fUseSSLIn; } void handshake(ssl::stream_base::handshake_type role) { if (!fNeedHandshake) return; fNeedHandshake = false; stream.handshake(role); } std::streamsize read(char* s, std::streamsize n) { handshake(ssl::stream_base::server); // HTTPS servers read first if (fUseSSL) return stream.read_some(asio::buffer(s, n)); return stream.next_layer().read_some(asio::buffer(s, n)); } std::streamsize write(const char* s, std::streamsize n) { handshake(ssl::stream_base::client); // HTTPS clients write first if (fUseSSL) return asio::write(stream, asio::buffer(s, n)); return asio::write(stream.next_layer(), asio::buffer(s, n)); } bool connect(const std::string& server, const std::string& port) { ip::tcp::resolver resolver(stream.get_io_service()); ip::tcp::resolver::query query(server.c_str(), port.c_str()); ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query); ip::tcp::resolver::iterator end; boost::system::error_code error = asio::error::host_not_found; while (error && endpoint_iterator != end) { stream.lowest_layer().close(); stream.lowest_layer().connect(*endpoint_iterator++, error); } if (error) return false; return true; } private: bool fNeedHandshake; bool fUseSSL; asio::ssl::stream& stream; }; class AcceptedConnection { public: virtual ~AcceptedConnection() {} virtual std::iostream& stream() = 0; virtual std::string peer_address_to_string() const = 0; virtual void close() = 0; }; template class AcceptedConnectionImpl : public AcceptedConnection { public: AcceptedConnectionImpl( asio::io_service& io_service, ssl::context &context, bool fUseSSL) : sslStream(io_service, context), _d(sslStream, fUseSSL), _stream(_d) { } virtual std::iostream& stream() { return _stream; } virtual std::string peer_address_to_string() const { return peer.address().to_string(); } virtual void close() { _stream.close(); } typename Protocol::endpoint peer; asio::ssl::stream sslStream; private: SSLIOStreamDevice _d; iostreams::stream< SSLIOStreamDevice > _stream; }; void ServiceConnection(AcceptedConnection *conn); // Forward declaration required for RPCListen template static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor > acceptor, ssl::context& context, bool fUseSSL, AcceptedConnection* conn, const boost::system::error_code& error); /** * Sets up I/O resources to accept and handle a new connection. */ template static void RPCListen(boost::shared_ptr< basic_socket_acceptor > acceptor, ssl::context& context, const bool fUseSSL) { // Accept connection AcceptedConnectionImpl* conn = new AcceptedConnectionImpl(acceptor->get_io_service(), context, fUseSSL); acceptor->async_accept( conn->sslStream.lowest_layer(), conn->peer, boost::bind(&RPCAcceptHandler, acceptor, boost::ref(context), fUseSSL, conn, boost::asio::placeholders::error)); } /** * Accept and handle incoming connection. */ template static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor > acceptor, ssl::context& context, const bool fUseSSL, AcceptedConnection* conn, const boost::system::error_code& error) { // Immediately start accepting new connections, except when we're cancelled or our socket is closed. if (error != asio::error::operation_aborted && acceptor->is_open()) RPCListen(acceptor, context, fUseSSL); AcceptedConnectionImpl* tcp_conn = dynamic_cast< AcceptedConnectionImpl* >(conn); // TODO: Actually handle errors if (error) { delete conn; } // Restrict callers by IP. It is important to // do this before starting client thread, to filter out // certain DoS and misbehaving clients. else if (tcp_conn && !ClientAllowed(tcp_conn->peer.address())) { // Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake. if (!fUseSSL) conn->stream() << HTTPReply(HTTP_FORBIDDEN, "", false) << std::flush; delete conn; } else { ServiceConnection(conn); conn->close(); delete conn; } } void StartRPCThreads() { strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]; if (((mapArgs["-rpcpassword"] == "") || (mapArgs["-rpcuser"] == mapArgs["-rpcpassword"])) && Params().RequireRPCPassword()) { unsigned char rand_pwd[32]; RAND_bytes(rand_pwd, 32); string strWhatAmI = "To use bitcoind"; if (mapArgs.count("-server")) strWhatAmI = strprintf(_("To use the %s option"), "\"-server\""); else if (mapArgs.count("-daemon")) strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\""); uiInterface.ThreadSafeMessageBox(strprintf( _("%s, you must set a rpcpassword in the configuration file:\n" "%s\n" "It is recommended you use the following random password:\n" "rpcuser=bitcoinrpc\n" "rpcpassword=%s\n" "(you do not need to remember this password)\n" "The username and password MUST NOT be the same.\n" "If the file does not exist, create it with owner-readable-only file permissions.\n" "It is also recommended to set alertnotify so you are notified of problems;\n" "for example: alertnotify=echo %%s | mail -s \"Bitcoin Alert\" admin@foo.com\n"), strWhatAmI.c_str(), GetConfigFile().string().c_str(), EncodeBase58(&rand_pwd[0],&rand_pwd[0]+32).c_str()), "", CClientUIInterface::MSG_ERROR); StartShutdown(); return; } assert(rpc_io_service == NULL); rpc_io_service = new asio::io_service(); rpc_ssl_context = new ssl::context(*rpc_io_service, ssl::context::sslv23); const bool fUseSSL = GetBoolArg("-rpcssl", false); if (fUseSSL) { rpc_ssl_context->set_options(ssl::context::no_sslv2); filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert")); if (!pathCertFile.is_complete()) pathCertFile = filesystem::path(GetDataDir()) / pathCertFile; if (filesystem::exists(pathCertFile)) rpc_ssl_context->use_certificate_chain_file(pathCertFile.string()); else LogPrintf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string().c_str()); filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem")); if (!pathPKFile.is_complete()) pathPKFile = filesystem::path(GetDataDir()) / pathPKFile; if (filesystem::exists(pathPKFile)) rpc_ssl_context->use_private_key_file(pathPKFile.string(), ssl::context::pem); else LogPrintf("ThreadRPCServer ERROR: missing server private key file %s\n", pathPKFile.string().c_str()); string strCiphers = GetArg("-rpcsslciphers", "TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH"); SSL_CTX_set_cipher_list(rpc_ssl_context->impl(), strCiphers.c_str()); } // Try a dual IPv6/IPv4 socket, falling back to separate IPv4 and IPv6 sockets const bool loopback = !mapArgs.count("-rpcallowip"); asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any(); ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", Params().RPCPort())); boost::system::error_code v6_only_error; boost::shared_ptr acceptor(new ip::tcp::acceptor(*rpc_io_service)); bool fListening = false; std::string strerr; try { acceptor->open(endpoint.protocol()); acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true)); // Try making the socket dual IPv6/IPv4 (if listening on the "any" address) acceptor->set_option(boost::asio::ip::v6_only(loopback), v6_only_error); acceptor->bind(endpoint); acceptor->listen(socket_base::max_connections); RPCListen(acceptor, *rpc_ssl_context, fUseSSL); fListening = true; } catch(boost::system::system_error &e) { strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv6, falling back to IPv4: %s"), endpoint.port(), e.what()); } try { // If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately if (!fListening || loopback || v6_only_error) { bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any(); endpoint.address(bindAddress); acceptor.reset(new ip::tcp::acceptor(*rpc_io_service)); acceptor->open(endpoint.protocol()); acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true)); acceptor->bind(endpoint); acceptor->listen(socket_base::max_connections); RPCListen(acceptor, *rpc_ssl_context, fUseSSL); fListening = true; } } catch(boost::system::system_error &e) { strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv4: %s"), endpoint.port(), e.what()); } if (!fListening) { uiInterface.ThreadSafeMessageBox(strerr, "", CClientUIInterface::MSG_ERROR); StartShutdown(); return; } rpc_worker_group = new boost::thread_group(); for (int i = 0; i < GetArg("-rpcthreads", 4); i++) rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service)); } void StopRPCThreads() { if (rpc_io_service == NULL) return; deadlineTimers.clear(); rpc_io_service->stop(); rpc_worker_group->join_all(); delete rpc_worker_group; rpc_worker_group = NULL; delete rpc_ssl_context; rpc_ssl_context = NULL; delete rpc_io_service; rpc_io_service = NULL; } void RPCRunHandler(const boost::system::error_code& err, boost::function func) { if (!err) func(); } void RPCRunLater(const std::string& name, boost::function func, int64 nSeconds) { assert(rpc_io_service != NULL); if (deadlineTimers.count(name) == 0) { deadlineTimers.insert(make_pair(name, boost::shared_ptr(new deadline_timer(*rpc_io_service)))); } deadlineTimers[name]->expires_from_now(posix_time::seconds(nSeconds)); deadlineTimers[name]->async_wait(boost::bind(RPCRunHandler, _1, func)); } class JSONRequest { public: Value id; string strMethod; Array params; JSONRequest() { id = Value::null; } void parse(const Value& valRequest); }; void JSONRequest::parse(const Value& valRequest) { // Parse request if (valRequest.type() != obj_type) throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object"); const Object& request = valRequest.get_obj(); // Parse id now so errors from here on will have the id id = find_value(request, "id"); // Parse method Value valMethod = find_value(request, "method"); if (valMethod.type() == null_type) throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method"); if (valMethod.type() != str_type) throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string"); strMethod = valMethod.get_str(); if (strMethod != "getwork" && strMethod != "getblocktemplate") LogPrint("rpc", "ThreadRPCServer method=%s\n", strMethod.c_str()); // Parse params Value valParams = find_value(request, "params"); if (valParams.type() == array_type) params = valParams.get_array(); else if (valParams.type() == null_type) params = Array(); else throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array"); } static Object JSONRPCExecOne(const Value& req) { Object rpc_result; JSONRequest jreq; try { jreq.parse(req); Value result = tableRPC.execute(jreq.strMethod, jreq.params); rpc_result = JSONRPCReplyObj(result, Value::null, jreq.id); } catch (Object& objError) { rpc_result = JSONRPCReplyObj(Value::null, objError, jreq.id); } catch (std::exception& e) { rpc_result = JSONRPCReplyObj(Value::null, JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id); } return rpc_result; } static string JSONRPCExecBatch(const Array& vReq) { Array ret; for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++) ret.push_back(JSONRPCExecOne(vReq[reqIdx])); return write_string(Value(ret), false) + "\n"; } void ServiceConnection(AcceptedConnection *conn) { bool fRun = true; while (fRun) { int nProto = 0; map mapHeaders; string strRequest, strMethod, strURI; // Read HTTP request line if (!ReadHTTPRequestLine(conn->stream(), nProto, strMethod, strURI)) break; // Read HTTP message headers and body ReadHTTPMessage(conn->stream(), mapHeaders, strRequest, nProto); if (strURI != "/") { conn->stream() << HTTPReply(HTTP_NOT_FOUND, "", false) << std::flush; break; } // Check authorization if (mapHeaders.count("authorization") == 0) { conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush; break; } if (!HTTPAuthorized(mapHeaders)) { LogPrintf("ThreadRPCServer incorrect password attempt from %s\n", conn->peer_address_to_string().c_str()); /* Deter brute-forcing short passwords. If this results in a DOS the user really shouldn't have their RPC port exposed.*/ if (mapArgs["-rpcpassword"].size() < 20) MilliSleep(250); conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush; break; } if (mapHeaders["connection"] == "close") fRun = false; JSONRequest jreq; try { // Parse request Value valRequest; if (!read_string(strRequest, valRequest)) throw JSONRPCError(RPC_PARSE_ERROR, "Parse error"); string strReply; // singleton request if (valRequest.type() == obj_type) { jreq.parse(valRequest); Value result = tableRPC.execute(jreq.strMethod, jreq.params); // Send reply strReply = JSONRPCReply(result, Value::null, jreq.id); // array of requests } else if (valRequest.type() == array_type) strReply = JSONRPCExecBatch(valRequest.get_array()); else throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error"); conn->stream() << HTTPReply(HTTP_OK, strReply, fRun) << std::flush; } catch (Object& objError) { ErrorReply(conn->stream(), objError, jreq.id); break; } catch (std::exception& e) { ErrorReply(conn->stream(), JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id); break; } } } json_spirit::Value CRPCTable::execute(const std::string &strMethod, const json_spirit::Array ¶ms) const { // Find method const CRPCCommand *pcmd = tableRPC[strMethod]; if (!pcmd) throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found"); // Observe safe mode string strWarning = GetWarnings("rpc"); if (strWarning != "" && !GetBoolArg("-disablesafemode", false) && !pcmd->okSafeMode) throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning); try { // Execute Value result; { if (pcmd->threadSafe) result = pcmd->actor(params, false); else { LOCK2(cs_main, pwalletMain->cs_wallet); result = pcmd->actor(params, false); } } return result; } catch (std::exception& e) { throw JSONRPCError(RPC_MISC_ERROR, e.what()); } } Object CallRPC(const string& strMethod, const Array& params) { if (mapArgs["-rpcuser"] == "" && mapArgs["-rpcpassword"] == "") throw runtime_error(strprintf( _("You must set rpcpassword= in the configuration file:\n%s\n" "If the file does not exist, create it with owner-readable-only file permissions."), GetConfigFile().string().c_str())); // Connect to localhost bool fUseSSL = GetBoolArg("-rpcssl", false); asio::io_service io_service; ssl::context context(io_service, ssl::context::sslv23); context.set_options(ssl::context::no_sslv2); asio::ssl::stream sslStream(io_service, context); SSLIOStreamDevice d(sslStream, fUseSSL); iostreams::stream< SSLIOStreamDevice > stream(d); if (!d.connect(GetArg("-rpcconnect", "127.0.0.1"), GetArg("-rpcport", itostr(Params().RPCPort())))) throw runtime_error("couldn't connect to server"); // HTTP basic authentication string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]); map mapRequestHeaders; mapRequestHeaders["Authorization"] = string("Basic ") + strUserPass64; // Send request string strRequest = JSONRPCRequest(strMethod, params, 1); string strPost = HTTPPost(strRequest, mapRequestHeaders); stream << strPost << std::flush; // Receive HTTP reply status int nProto = 0; int nStatus = ReadHTTPStatus(stream, nProto); // Receive HTTP reply message headers and body map mapHeaders; string strReply; ReadHTTPMessage(stream, mapHeaders, strReply, nProto); if (nStatus == HTTP_UNAUTHORIZED) throw runtime_error("incorrect rpcuser or rpcpassword (authorization failed)"); else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR) throw runtime_error(strprintf("server returned HTTP error %d", nStatus)); else if (strReply.empty()) throw runtime_error("no response from server"); // Parse reply Value valReply; if (!read_string(strReply, valReply)) throw runtime_error("couldn't parse reply from server"); const Object& reply = valReply.get_obj(); if (reply.empty()) throw runtime_error("expected reply to have result, error and id properties"); return reply; } template void ConvertTo(Value& value, bool fAllowNull=false) { if (fAllowNull && value.type() == null_type) return; if (value.type() == str_type) { // reinterpret string as unquoted json value Value value2; string strJSON = value.get_str(); if (!read_string(strJSON, value2)) throw runtime_error(string("Error parsing JSON:")+strJSON); ConvertTo(value2, fAllowNull); value = value2; } else { value = value.get_value(); } } // Convert strings to command-specific RPC representation Array RPCConvertValues(const std::string &strMethod, const std::vector &strParams) { Array params; BOOST_FOREACH(const std::string ¶m, strParams) params.push_back(param); int n = params.size(); // // Special case non-string parameter types // if (strMethod == "stop" && n > 0) ConvertTo(params[0]); if (strMethod == "getaddednodeinfo" && n > 0) ConvertTo(params[0]); if (strMethod == "setgenerate" && n > 0) ConvertTo(params[0]); if (strMethod == "setgenerate" && n > 1) ConvertTo(params[1]); if (strMethod == "sendtoaddress" && n > 1) ConvertTo(params[1]); if (strMethod == "settxfee" && n > 0) ConvertTo(params[0]); if (strMethod == "getreceivedbyaddress" && n > 1) ConvertTo(params[1]); if (strMethod == "getreceivedbyaccount" && n > 1) ConvertTo(params[1]); if (strMethod == "listreceivedbyaddress" && n > 0) ConvertTo(params[0]); if (strMethod == "listreceivedbyaddress" && n > 1) ConvertTo(params[1]); if (strMethod == "listreceivedbyaccount" && n > 0) ConvertTo(params[0]); if (strMethod == "listreceivedbyaccount" && n > 1) ConvertTo(params[1]); if (strMethod == "getbalance" && n > 1) ConvertTo(params[1]); if (strMethod == "getblockhash" && n > 0) ConvertTo(params[0]); if (strMethod == "move" && n > 2) ConvertTo(params[2]); if (strMethod == "move" && n > 3) ConvertTo(params[3]); if (strMethod == "sendfrom" && n > 2) ConvertTo(params[2]); if (strMethod == "sendfrom" && n > 3) ConvertTo(params[3]); if (strMethod == "listtransactions" && n > 1) ConvertTo(params[1]); if (strMethod == "listtransactions" && n > 2) ConvertTo(params[2]); if (strMethod == "listaccounts" && n > 0) ConvertTo(params[0]); if (strMethod == "walletpassphrase" && n > 1) ConvertTo(params[1]); if (strMethod == "getblocktemplate" && n > 0) ConvertTo(params[0]); if (strMethod == "listsinceblock" && n > 1) ConvertTo(params[1]); if (strMethod == "sendmany" && n > 1) ConvertTo(params[1]); if (strMethod == "sendmany" && n > 2) ConvertTo(params[2]); if (strMethod == "addmultisigaddress" && n > 0) ConvertTo(params[0]); if (strMethod == "addmultisigaddress" && n > 1) ConvertTo(params[1]); if (strMethod == "createmultisig" && n > 0) ConvertTo(params[0]); if (strMethod == "createmultisig" && n > 1) ConvertTo(params[1]); if (strMethod == "listunspent" && n > 0) ConvertTo(params[0]); if (strMethod == "listunspent" && n > 1) ConvertTo(params[1]); if (strMethod == "listunspent" && n > 2) ConvertTo(params[2]); if (strMethod == "getblock" && n > 1) ConvertTo(params[1]); if (strMethod == "getrawtransaction" && n > 1) ConvertTo(params[1]); if (strMethod == "createrawtransaction" && n > 0) ConvertTo(params[0]); if (strMethod == "createrawtransaction" && n > 1) ConvertTo(params[1]); if (strMethod == "signrawtransaction" && n > 1) ConvertTo(params[1], true); if (strMethod == "signrawtransaction" && n > 2) ConvertTo(params[2], true); if (strMethod == "gettxout" && n > 1) ConvertTo(params[1]); if (strMethod == "gettxout" && n > 2) ConvertTo(params[2]); if (strMethod == "lockunspent" && n > 0) ConvertTo(params[0]); if (strMethod == "lockunspent" && n > 1) ConvertTo(params[1]); if (strMethod == "importprivkey" && n > 2) ConvertTo(params[2]); if (strMethod == "verifychain" && n > 0) ConvertTo(params[0]); if (strMethod == "verifychain" && n > 1) ConvertTo(params[1]); if (strMethod == "keypoolrefill" && n > 0) ConvertTo(params[0]); return params; } int CommandLineRPC(int argc, char *argv[]) { string strPrint; int nRet = 0; try { // Skip switches while (argc > 1 && IsSwitchChar(argv[1][0])) { argc--; argv++; } // Method if (argc < 2) throw runtime_error("too few parameters"); string strMethod = argv[1]; // Parameters default to strings std::vector strParams(&argv[2], &argv[argc]); Array params = RPCConvertValues(strMethod, strParams); // Execute Object reply = CallRPC(strMethod, params); // Parse reply const Value& result = find_value(reply, "result"); const Value& error = find_value(reply, "error"); if (error.type() != null_type) { // Error strPrint = "error: " + write_string(error, false); int code = find_value(error.get_obj(), "code").get_int(); nRet = abs(code); } else { // Result if (result.type() == null_type) strPrint = ""; else if (result.type() == str_type) strPrint = result.get_str(); else strPrint = write_string(result, true); } } catch (boost::thread_interrupted) { throw; } catch (std::exception& e) { strPrint = string("error: ") + e.what(); nRet = 87; } catch (...) { PrintException(NULL, "CommandLineRPC()"); } if (strPrint != "") { fprintf((nRet == 0 ? stdout : stderr), "%s\n", strPrint.c_str()); } return nRet; } #ifdef TEST int main(int argc, char *argv[]) { #ifdef _MSC_VER // Turn off Microsoft heap dump noise _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE); _CrtSetReportFile(_CRT_WARN, CreateFile("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0)); #endif setbuf(stdin, NULL); setbuf(stdout, NULL); setbuf(stderr, NULL); try { if (argc >= 2 && string(argv[1]) == "-server") { LogPrintf("server ready\n"); ThreadRPCServer(NULL); } else { return CommandLineRPC(argc, argv); } } catch (boost::thread_interrupted) { throw; } catch (std::exception& e) { PrintException(&e, "main()"); } catch (...) { PrintException(NULL, "main()"); } return 0; } #endif const CRPCTable tableRPC;