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Diffstat (limited to 'src/rpcserver.cpp')
| -rw-r--r-- | src/rpcserver.cpp | 823 |
1 files changed, 823 insertions, 0 deletions
diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp new file mode 100644 index 0000000000..c746d8c8fb --- /dev/null +++ b/src/rpcserver.cpp @@ -0,0 +1,823 @@ +// Copyright (c) 2010 Satoshi Nakamoto +// Copyright (c) 2009-2013 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 "rpcserver.h" + +#include "base58.h" +#include "init.h" +#include "main.h" +#include "util.h" +#include "wallet.h" + +#include <boost/algorithm/string.hpp> +#include <boost/asio.hpp> +#include <boost/asio/ssl.hpp> +#include <boost/bind.hpp> +#include <boost/filesystem.hpp> +#include <boost/foreach.hpp> +#include <boost/iostreams/concepts.hpp> +#include <boost/iostreams/stream.hpp> +#include <boost/lexical_cast.hpp> +#include <boost/shared_ptr.hpp> +#include "json/json_spirit_writer_template.h" + +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<string, boost::shared_ptr<deadline_timer> > deadlineTimers; +static ssl::context* rpc_ssl_context = NULL; +static boost::thread_group* rpc_worker_group = NULL; + +void RPCTypeCheck(const Array& params, + const list<Value_type>& 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<string, Value_type>& 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_t AmountFromValue(const Value& value) +{ + double dAmount = value.get_real(); + if (dAmount <= 0.0 || dAmount > 21000000.0) + throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount"); + int64_t nAmount = roundint64(dAmount * COIN); + if (!MoneyRange(nAmount)) + throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount"); + return nAmount; +} + +Value ValueFromAmount(int64_t 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<unsigned char> 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<unsigned char> 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<rpcfn_type> setDone; + for (map<string, const CRPCCommand*>::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; + if (pcmd->reqWallet && !pwalletMain) + 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" + "\nList all commands, or get help for a specified command.\n" + "\nArguments:\n" + "1. \"command\" (string, optional) The command to get help on\n" + "\nResult:\n" + "\"text\" (string) The help text\n" + ); + + 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" + "\nStop 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 reqWallet + // ------------------------ ----------------------- ---------- ---------- --------- + { "help", &help, true, true, false }, + { "stop", &stop, true, true, false }, + { "getblockcount", &getblockcount, true, false, false }, + { "getbestblockhash", &getbestblockhash, true, false, false }, + { "getconnectioncount", &getconnectioncount, true, false, false }, + { "getpeerinfo", &getpeerinfo, true, false, false }, + { "ping", &ping, true, false, false }, + { "addnode", &addnode, true, true, false }, + { "getaddednodeinfo", &getaddednodeinfo, true, true, false }, + { "getnettotals", &getnettotals, true, true, false }, + { "getdifficulty", &getdifficulty, true, false, false }, + { "getnetworkhashps", &getnetworkhashps, true, false, false }, + { "getgenerate", &getgenerate, true, false, false }, + { "setgenerate", &setgenerate, true, true, false }, + { "gethashespersec", &gethashespersec, true, false, false }, + { "getinfo", &getinfo, true, false, false }, + { "getmininginfo", &getmininginfo, true, false, false }, + { "getnewaddress", &getnewaddress, true, false, true }, + { "getaccountaddress", &getaccountaddress, true, false, true }, + { "getrawchangeaddress", &getrawchangeaddress, true, false, true }, + { "setaccount", &setaccount, true, false, true }, + { "getaccount", &getaccount, false, false, true }, + { "getaddressesbyaccount", &getaddressesbyaccount, true, false, true }, + { "sendtoaddress", &sendtoaddress, false, false, true }, + { "getreceivedbyaddress", &getreceivedbyaddress, false, false, true }, + { "getreceivedbyaccount", &getreceivedbyaccount, false, false, true }, + { "listreceivedbyaddress", &listreceivedbyaddress, false, false, true }, + { "listreceivedbyaccount", &listreceivedbyaccount, false, false, true }, + { "backupwallet", &backupwallet, true, false, true }, + { "keypoolrefill", &keypoolrefill, true, false, true }, + { "walletpassphrase", &walletpassphrase, true, false, true }, + { "walletpassphrasechange", &walletpassphrasechange, false, false, true }, + { "walletlock", &walletlock, true, false, true }, + { "encryptwallet", &encryptwallet, false, false, true }, + { "validateaddress", &validateaddress, true, false, false }, + { "getbalance", &getbalance, false, false, true }, + { "move", &movecmd, false, false, true }, + { "sendfrom", &sendfrom, false, false, true }, + { "sendmany", &sendmany, false, false, true }, + { "addmultisigaddress", &addmultisigaddress, false, false, true }, + { "createmultisig", &createmultisig, true, true , false }, + { "getrawmempool", &getrawmempool, true, false, false }, + { "getblock", &getblock, false, false, false }, + { "getblockhash", &getblockhash, false, false, false }, + { "gettransaction", &gettransaction, false, false, true }, + { "listtransactions", &listtransactions, false, false, true }, + { "listaddressgroupings", &listaddressgroupings, false, false, true }, + { "signmessage", &signmessage, false, false, true }, + { "verifymessage", &verifymessage, false, false, false }, + { "getwork", &getwork, true, false, true }, + { "listaccounts", &listaccounts, false, false, true }, + { "settxfee", &settxfee, false, false, true }, + { "getblocktemplate", &getblocktemplate, true, false, false }, + { "submitblock", &submitblock, false, false, false }, + { "listsinceblock", &listsinceblock, false, false, true }, + { "dumpprivkey", &dumpprivkey, true, false, true }, + { "dumpwallet", &dumpwallet, true, false, true }, + { "importprivkey", &importprivkey, false, false, true }, + { "importwallet", &importwallet, false, false, true }, + { "listunspent", &listunspent, false, false, true }, + { "getrawtransaction", &getrawtransaction, false, false, false }, + { "createrawtransaction", &createrawtransaction, false, false, false }, + { "decoderawtransaction", &decoderawtransaction, false, false, false }, + { "decodescript", &decodescript, false, false, false }, + { "signrawtransaction", &signrawtransaction, false, false, false }, + { "sendrawtransaction", &sendrawtransaction, false, false, false }, + { "gettxoutsetinfo", &gettxoutsetinfo, true, false, false }, + { "gettxout", &gettxout, true, false, false }, + { "lockunspent", &lockunspent, false, false, true }, + { "listlockunspent", &listlockunspent, false, false, true }, + { "verifychain", &verifychain, true, false, 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<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name); + if (it == mapCommands.end()) + return NULL; + return (*it).second; +} + + +bool HTTPAuthorized(map<string, string>& 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); +} + +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<string>& vAllow = mapMultiArgs["-rpcallowip"]; + BOOST_FOREACH(string strAllow, vAllow) + if (WildcardMatch(strAddress, strAllow)) + return true; + return false; +} + +class AcceptedConnection +{ +public: + virtual ~AcceptedConnection() {} + + virtual std::iostream& stream() = 0; + virtual std::string peer_address_to_string() const = 0; + virtual void close() = 0; +}; + +template <typename Protocol> +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<typename Protocol::socket> sslStream; + +private: + SSLIOStreamDevice<Protocol> _d; + iostreams::stream< SSLIOStreamDevice<Protocol> > _stream; +}; + +void ServiceConnection(AcceptedConnection *conn); + +// Forward declaration required for RPCListen +template <typename Protocol, typename SocketAcceptorService> +static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > 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 <typename Protocol, typename SocketAcceptorService> +static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor, + ssl::context& context, + const bool fUseSSL) +{ + // Accept connection + AcceptedConnectionImpl<Protocol>* conn = new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL); + + acceptor->async_accept( + conn->sslStream.lowest_layer(), + conn->peer, + boost::bind(&RPCAcceptHandler<Protocol, SocketAcceptorService>, + acceptor, + boost::ref(context), + fUseSSL, + conn, + boost::asio::placeholders::error)); +} + + +/** + * Accept and handle incoming connection. + */ +template <typename Protocol, typename SocketAcceptorService> +static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > 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<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(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", "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!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<ip::tcp::acceptor> 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(); + if (rpc_worker_group != NULL) + 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<void(void)> func) +{ + if (!err) + func(); +} + +void RPCRunLater(const std::string& name, boost::function<void(void)> func, int64_t nSeconds) +{ + assert(rpc_io_service != NULL); + + if (deadlineTimers.count(name) == 0) + { + deadlineTimers.insert(make_pair(name, + boost::shared_ptr<deadline_timer>(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<string, string> 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"); + if (pcmd->reqWallet && !pwalletMain) + throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found (disabled)"); + + // 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 if (!pwalletMain) { + LOCK(cs_main); + 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()); + } +} + +const CRPCTable tableRPC; |