Split up bitcoinrpc (code movement only)

Split bitcoinrpc up into

- rpcserver: bitcoind RPC server
- rpcclient: bitcoin-cli RPC client
- rpcprotocol: shared common HTTP/JSON-RPC protocol code

One step towards making bitcoin-cli independent from the rest
of the code, and thus a smaller executable that doesn't have to
be linked against leveldb.

This commit only does code movement, there are no functional changes.

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 &params) 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;