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rpcserver.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Copyright (c) 2014-2015 The Dash developers
// Copyright (c) 2015-2017 The PIVX developers
// Copyright (c) 2015-2017 The BTDX developers
// Distributed under the MIT 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 "ui_interface.h"
#include "util.h"
#ifdef ENABLE_WALLET
#include "wallet.h"
#endif
#include "json/json_spirit_writer_template.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/shared_ptr.hpp>
#include <boost/thread.hpp>
using namespace boost;
using namespace boost::asio;
using namespace json_spirit;
using namespace std;
static std::string strRPCUserColonPass;
static bool fRPCRunning = false;
static bool fRPCInWarmup = true;
static std::string rpcWarmupStatus("RPC server started");
static CCriticalSection cs_rpcWarmup;
//! 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;
static boost::asio::io_service::work* rpc_dummy_work = NULL;
static std::vector<CSubNet> rpc_allow_subnets; //!< List of subnets to allow RPC connections from
static std::vector<boost::shared_ptr<ip::tcp::acceptor> > rpc_acceptors;
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));
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, Value_type_name[v.type()]);
throw JSONRPCError(RPC_TYPE_ERROR, err);
}
}
}
static inline int64_t roundint64(double d)
{
return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
}
CAmount AmountFromValue(const Value& value)
{
double dAmount = value.get_real();
if (dAmount <= 0.0 || dAmount > 21000000.0)
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
CAmount nAmount = roundint64(dAmount * COIN);
if (!MoneyRange(nAmount))
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
return nAmount;
}
Value ValueFromAmount(const CAmount& amount)
{
return (double)amount / (double)COIN;
}
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;
string category;
set<rpcfn_type> setDone;
vector<pair<string, const CRPCCommand*> > vCommands;
for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
vCommands.push_back(make_pair(mi->second->category + mi->first, mi->second));
sort(vCommands.begin(), vCommands.end());
BOOST_FOREACH (const PAIRTYPE(string, const CRPCCommand*) & command, vCommands) {
const CRPCCommand* pcmd = command.second;
string strMethod = pcmd->name;
// We already filter duplicates, but these deprecated screw up the sort order
if (strMethod.find("label") != string::npos)
continue;
if ((strCommand != "" || pcmd->category == "hidden") && strMethod != strCommand)
continue;
#ifdef ENABLE_WALLET
if (pcmd->reqWallet && !pwalletMain)
continue;
#endif
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'));
if (category != pcmd->category) {
if (!category.empty())
strRet += "\n";
category = pcmd->category;
string firstLetter = category.substr(0, 1);
boost::to_upper(firstLetter);
strRet += "== " + firstLetter + category.substr(1) + " ==\n";
}
}
strRet += strHelp + "\n";
}
}
if (strRet == "")
strRet = strprintf("help: unknown command: %s\n", strCommand);
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 BTDX server.");
// Shutdown will take long enough that the response should get back
StartShutdown();
return "BTDX server stopping";
}
/**
* Call Table
*/
static const CRPCCommand vRPCCommands[] =
{
// category name actor (function) okSafeMode threadSafe reqWallet
// --------------------- ------------------------ ----------------------- ---------- ---------- ---------
/* Overall control/query calls */
{"control", "getinfo", &getinfo, true, false, false}, /* uses wallet if enabled */
{"control", "help", &help, true, true, false},
{"control", "stop", &stop, true, true, false},
/* P2P networking */
{"network", "getnetworkinfo", &getnetworkinfo, true, false, false},
{"network", "addnode", &addnode, true, true, false},
{"network", "getaddednodeinfo", &getaddednodeinfo, true, true, false},
{"network", "getconnectioncount", &getconnectioncount, true, false, false},
{"network", "getnettotals", &getnettotals, true, true, false},
{"network", "getpeerinfo", &getpeerinfo, true, false, false},
{"network", "ping", &ping, true, false, false},
/* Block chain and UTXO */
{"blockchain", "getblockchaininfo", &getblockchaininfo, true, false, false},
{"blockchain", "getbestblockhash", &getbestblockhash, true, false, false},
{"blockchain", "getblockcount", &getblockcount, true, false, false},
{"blockchain", "getblock", &getblock, true, false, false},
{"blockchain", "getblockhash", &getblockhash, true, false, false},
{"blockchain", "getblockheader", &getblockheader, false, false, false},
{"blockchain", "getchaintips", &getchaintips, true, false, false},
{"blockchain", "getdifficulty", &getdifficulty, true, false, false},
{"blockchain", "getmempoolinfo", &getmempoolinfo, true, true, false},
{"blockchain", "getrawmempool", &getrawmempool, true, false, false},
{"blockchain", "gettxout", &gettxout, true, false, false},
{"blockchain", "gettxoutsetinfo", &gettxoutsetinfo, true, false, false},
{"blockchain", "verifychain", &verifychain, true, false, false},
{"blockchain", "invalidateblock", &invalidateblock, true, true, false},
{"blockchain", "reconsiderblock", &reconsiderblock, true, true, false},
/* Mining */
{"mining", "getblocktemplate", &getblocktemplate, true, false, false},
{"mining", "getmininginfo", &getmininginfo, true, false, false},
{"mining", "getnetworkhashps", &getnetworkhashps, true, false, false},
{"mining", "prioritisetransaction", &prioritisetransaction, true, false, false},
{"mining", "submitblock", &submitblock, true, true, false},
{"mining", "reservebalance", &reservebalance, true, true, false},
#ifdef ENABLE_WALLET
/* Coin generation */
{"generating", "getgenerate", &getgenerate, true, false, false},
{"generating", "gethashespersec", &gethashespersec, true, false, false},
{"generating", "setgenerate", &setgenerate, true, true, false},
#endif
/* Raw transactions */
{"rawtransactions", "createrawtransaction", &createrawtransaction, true, false, false},
{"rawtransactions", "decoderawtransaction", &decoderawtransaction, true, false, false},
{"rawtransactions", "decodescript", &decodescript, true, false, false},
{"rawtransactions", "getrawtransaction", &getrawtransaction, true, false, false},
{"rawtransactions", "sendrawtransaction", &sendrawtransaction, false, false, false},
{"rawtransactions", "signrawtransaction", &signrawtransaction, false, false, false}, /* uses wallet if enabled */
/* Utility functions */
{"util", "createmultisig", &createmultisig, true, true, false},
{"util", "validateaddress", &validateaddress, true, false, false}, /* uses wallet if enabled */
{"util", "verifymessage", &verifymessage, true, false, false},
{"util", "estimatefee", &estimatefee, true, true, false},
{"util", "estimatepriority", &estimatepriority, true, true, false},
/* Not shown in help */
{"hidden", "invalidateblock", &invalidateblock, true, true, false},
{"hidden", "reconsiderblock", &reconsiderblock, true, true, false},
{"hidden", "setmocktime", &setmocktime, true, false, false},
/* Bitcloud features */
{"bitcloud", "masternode", &masternode, true, true, false},
{"bitcloud", "masternodelist", &masternodelist, true, true, false},
{"bitcloud", "mnbudget", &mnbudget, true, true, false},
{"bitcloud", "mnbudgetvoteraw", &mnbudgetvoteraw, true, true, false},
{"bitcloud", "mnfinalbudget", &mnfinalbudget, true, true, false},
{"bitcloud", "mnsync", &mnsync, true, true, false},
{"bitcloud", "spork", &spork, true, true, false},
#ifdef ENABLE_WALLET
{"bitcloud", "Darksend", &Darksend, false, false, true}, /* not threadSafe because of SendMoney */
/* Wallet */
{"wallet", "addmultisigaddress", &addmultisigaddress, true, false, true},
{"wallet", "autocombinerewards", &autocombinerewards, false, false, true},
{"wallet", "backupwallet", &backupwallet, true, false, true},
{"wallet", "dumpprivkey", &dumpprivkey, true, false, true},
{"wallet", "dumpwallet", &dumpwallet, true, false, true},
{"wallet", "bip38encrypt", &bip38encrypt, true, false, true},
{"wallet", "bip38decrypt", &bip38decrypt, true, false, true},
{"wallet", "encryptwallet", &encryptwallet, true, false, true},
{"wallet", "getaccountaddress", &getaccountaddress, true, false, true},
{"wallet", "getaccount", &getaccount, true, false, true},
{"wallet", "getaddressesbyaccount", &getaddressesbyaccount, true, false, true},
{"wallet", "getbalance", &getbalance, false, false, true},
{"wallet", "getnewaddress", &getnewaddress, true, false, true},
{"wallet", "getrawchangeaddress", &getrawchangeaddress, true, false, true},
{"wallet", "getreceivedbyaccount", &getreceivedbyaccount, false, false, true},
{"wallet", "getreceivedbyaddress", &getreceivedbyaddress, false, false, true},
{"wallet", "getstakingstatus", &getstakingstatus, false, false, true},
{"wallet", "getstakesplitthreshold", &getstakesplitthreshold, false, false, true},
{"wallet", "getautocombineinfo", &getautocombineinfo, false, false, true},
{"wallet", "gettransaction", &gettransaction, false, false, true},
{"wallet", "getunconfirmedbalance", &getunconfirmedbalance, false, false, true},
{"wallet", "getwalletinfo", &getwalletinfo, false, false, true},
{"wallet", "importprivkey", &importprivkey, true, false, true},
{"wallet", "importwallet", &importwallet, true, false, true},
{"wallet", "importaddress", &importaddress, true, false, true},
{"wallet", "keypoolrefill", &keypoolrefill, true, false, true},
{"wallet", "listaccounts", &listaccounts, false, false, true},
{"wallet", "listaddressgroupings", &listaddressgroupings, false, false, true},
{"wallet", "listlockunspent", &listlockunspent, false, false, true},
{"wallet", "listreceivedbyaccount", &listreceivedbyaccount, false, false, true},
{"wallet", "listreceivedbyaddress", &listreceivedbyaddress, false, false, true},
{"wallet", "listsinceblock", &listsinceblock, false, false, true},
{"wallet", "listtransactions", &listtransactions, false, false, true},
{"wallet", "listunspent", &listunspent, false, false, true},
{"wallet", "lockunspent", &lockunspent, true, false, true},
{"wallet", "move", &movecmd, false, false, true},
{"wallet", "multisend", &multisend, false, false, true},
{"wallet", "sendfrom", &sendfrom, false, false, true},
{"wallet", "sendmany", &sendmany, false, false, true},
{"wallet", "sendtoaddress", &sendtoaddress, false, false, true},
{"wallet", "sendtoaddressix", &sendtoaddressix, false, false, true},
{"wallet", "setaccount", &setaccount, true, false, true},
{"wallet", "setstakesplitthreshold", &setstakesplitthreshold, false, false, true},
{"wallet", "settxfee", &settxfee, true, false, true},
{"wallet", "signmessage", &signmessage, true, false, true},
{"wallet", "walletlock", &walletlock, true, false, true},
{"wallet", "walletpassphrasechange", &walletpassphrasechange, true, false, true},
{"wallet", "walletpassphrase", &walletpassphrase, true, false, true},
#endif // ENABLE_WALLET
};
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;
}
CNetAddr BoostAsioToCNetAddr(boost::asio::ip::address address)
{
CNetAddr netaddr;
// 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()))
address = address.to_v6().to_v4();
if (address.is_v4()) {
boost::asio::ip::address_v4::bytes_type bytes = address.to_v4().to_bytes();
netaddr.SetRaw(NET_IPV4, &bytes[0]);
} else {
boost::asio::ip::address_v6::bytes_type bytes = address.to_v6().to_bytes();
netaddr.SetRaw(NET_IPV6, &bytes[0]);
}
return netaddr;
}
bool ClientAllowed(const boost::asio::ip::address& address)
{
CNetAddr netaddr = BoostAsioToCNetAddr(address);
BOOST_FOREACH (const CSubNet& subnet, rpc_allow_subnets)
if (subnet.Match(netaddr))
return true;
return false;
}
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>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol> > acceptor,
ssl::context& context,
bool fUseSSL,
boost::shared_ptr< AcceptedConnection > conn,
const boost::system::error_code& error);
/**
* Sets up I/O resources to accept and handle a new connection.
*/
template <typename Protocol>
static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol> > acceptor,
ssl::context& context,
const bool fUseSSL)
{
// Accept connection
boost::shared_ptr<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>,
acceptor,
boost::ref(context),
fUseSSL,
conn,
_1));
}
/**
* Accept and handle incoming connection.
*/
template <typename Protocol>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol> > acceptor,
ssl::context& context,
const bool fUseSSL,
boost::shared_ptr< 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.get());
if (error) {
// TODO: Actually handle errors
LogPrintf("%s: Error: %s\n", __func__, error.message());
}
// 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() << HTTPError(HTTP_FORBIDDEN, false) << std::flush;
conn->close();
} else {
ServiceConnection(conn.get());
conn->close();
}
}
static ip::tcp::endpoint ParseEndpoint(const std::string& strEndpoint, int defaultPort)
{
std::string addr;
int port = defaultPort;
SplitHostPort(strEndpoint, port, addr);
return ip::tcp::endpoint(asio::ip::address::from_string(addr), port);
}
void StartRPCThreads()
{
rpc_allow_subnets.clear();
rpc_allow_subnets.push_back(CSubNet("127.0.0.0/8")); // always allow IPv4 local subnet
rpc_allow_subnets.push_back(CSubNet("::1")); // always allow IPv6 localhost
if (mapMultiArgs.count("-rpcallowip")) {
const vector<string>& vAllow = mapMultiArgs["-rpcallowip"];
BOOST_FOREACH (string strAllow, vAllow) {
CSubNet subnet(strAllow);
if (!subnet.IsValid()) {
uiInterface.ThreadSafeMessageBox(
strprintf("Invalid -rpcallowip subnet specification: %s. Valid are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24).", strAllow),
"", CClientUIInterface::MSG_ERROR);
StartShutdown();
return;
}
rpc_allow_subnets.push_back(subnet);
}
}
std::string strAllowed;
BOOST_FOREACH (const CSubNet& subnet, rpc_allow_subnets)
strAllowed += subnet.ToString() + " ";
LogPrint("rpc", "Allowing RPC connections from: %s\n", strAllowed);
strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
if (((mapArgs["-rpcpassword"] == "") ||
(mapArgs["-rpcuser"] == mapArgs["-rpcpassword"])) &&
Params().RequireRPCPassword()) {
unsigned char rand_pwd[32];
GetRandBytes(rand_pwd, 32);
uiInterface.ThreadSafeMessageBox(strprintf(
_("To use bitcloudd, or the -server option to bitcloud-qt, you must set an rpcpassword in the configuration file:\n"
"%s\n"
"It is recommended you use the following random password:\n"
"rpcuser=bitcloudrpc\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 \"BTDX Alert\" admin@foo.com\n"),
GetConfigFile().string(),
EncodeBase58(&rand_pwd[0], &rand_pwd[0] + 32)),
"", CClientUIInterface::MSG_ERROR | CClientUIInterface::SECURE);
StartShutdown();
return;
}
assert(rpc_io_service == NULL);
rpc_io_service = new asio::io_service();
rpc_ssl_context = new ssl::context(ssl::context::sslv23);
const bool fUseSSL = GetBoolArg("-rpcssl", false);
if (fUseSSL) {
rpc_ssl_context->set_options(ssl::context::no_sslv2 | ssl::context::no_sslv3);
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());
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());
string strCiphers = GetArg("-rpcsslciphers", "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH");
SSL_CTX_set_cipher_list(rpc_ssl_context->native_handle(), strCiphers.c_str());
}
std::vector<ip::tcp::endpoint> vEndpoints;
bool bBindAny = false;
int defaultPort = GetArg("-rpcport", BaseParams().RPCPort());
if (!mapArgs.count("-rpcallowip")) // Default to loopback if not allowing external IPs
{
vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::loopback(), defaultPort));
vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::loopback(), defaultPort));
if (mapArgs.count("-rpcbind")) {
LogPrintf("WARNING: option -rpcbind was ignored because -rpcallowip was not specified, refusing to allow everyone to connect\n");
}
} else if (mapArgs.count("-rpcbind")) // Specific bind address
{
BOOST_FOREACH (const std::string& addr, mapMultiArgs["-rpcbind"]) {
try {
vEndpoints.push_back(ParseEndpoint(addr, defaultPort));
} catch (const boost::system::system_error&) {
uiInterface.ThreadSafeMessageBox(
strprintf(_("Could not parse -rpcbind value %s as network address"), addr),
"", CClientUIInterface::MSG_ERROR);
StartShutdown();
return;
}
}
} else { // No specific bind address specified, bind to any
vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::any(), defaultPort));
vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::any(), defaultPort));
// Prefer making the socket dual IPv6/IPv4 instead of binding
// to both addresses seperately.
bBindAny = true;
}
bool fListening = false;
std::string strerr;
std::string straddress;
BOOST_FOREACH (const ip::tcp::endpoint& endpoint, vEndpoints) {
try {
asio::ip::address bindAddress = endpoint.address();
straddress = bindAddress.to_string();
LogPrintf("Binding RPC on address %s port %i (IPv4+IPv6 bind any: %i)\n", straddress, endpoint.port(), bBindAny);
boost::system::error_code v6_only_error;
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
// Try making the socket dual IPv6/IPv4 when listening on the IPv6 "any" address
acceptor->set_option(boost::asio::ip::v6_only(
!bBindAny || bindAddress != asio::ip::address_v6::any()),
v6_only_error);
acceptor->bind(endpoint);
acceptor->listen(socket_base::max_connections);
RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
rpc_acceptors.push_back(acceptor);
fListening = true;
rpc_acceptors.push_back(acceptor);
// If dual IPv6/IPv4 bind successful, skip binding to IPv4 separately
if (bBindAny && bindAddress == asio::ip::address_v6::any() && !v6_only_error)
break;
} catch (boost::system::system_error& e) {
LogPrintf("ERROR: Binding RPC on address %s port %i failed: %s\n", straddress, endpoint.port(), e.what());
strerr = strprintf(_("An error occurred while setting up the RPC address %s port %u for listening: %s"), straddress, 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));
fRPCRunning = true;
}
void StartDummyRPCThread()
{
if (rpc_io_service == NULL) {
rpc_io_service = new asio::io_service();
/* Create dummy "work" to keep the thread from exiting when no timeouts active,
* see http://www.boost.org/doc/libs/1_51_0/doc/html/boost_asio/reference/io_service.html#boost_asio.reference.io_service.stopping_the_io_service_from_running_out_of_work */
rpc_dummy_work = new asio::io_service::work(*rpc_io_service);
rpc_worker_group = new boost::thread_group();
rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
fRPCRunning = true;
}
}
void StopRPCThreads()
{
if (rpc_io_service == NULL) return;
// Set this to false first, so that longpolling loops will exit when woken up
fRPCRunning = false;
// First, cancel all timers and acceptors
// This is not done automatically by ->stop(), and in some cases the destructor of
// asio::io_service can hang if this is skipped.
boost::system::error_code ec;
BOOST_FOREACH (const boost::shared_ptr<ip::tcp::acceptor>& acceptor, rpc_acceptors) {
acceptor->cancel(ec);
if (ec)
LogPrintf("%s: Warning: %s when cancelling acceptor", __func__, ec.message());
}
rpc_acceptors.clear();
BOOST_FOREACH (const PAIRTYPE(std::string, boost::shared_ptr<deadline_timer>) & timer, deadlineTimers) {
timer.second->cancel(ec);
if (ec)
LogPrintf("%s: Warning: %s when cancelling timer", __func__, ec.message());
}
deadlineTimers.clear();
rpc_io_service->stop();
cvBlockChange.notify_all();
if (rpc_worker_group != NULL)
rpc_worker_group->join_all();
delete rpc_dummy_work;
rpc_dummy_work = NULL;
delete rpc_worker_group;
rpc_worker_group = NULL;
delete rpc_ssl_context;
rpc_ssl_context = NULL;
delete rpc_io_service;
rpc_io_service = NULL;
}
bool IsRPCRunning()
{
return fRPCRunning;
}
void SetRPCWarmupStatus(const std::string& newStatus)
{
LOCK(cs_rpcWarmup);
rpcWarmupStatus = newStatus;
}
void SetRPCWarmupFinished()
{
LOCK(cs_rpcWarmup);
assert(fRPCInWarmup);
fRPCInWarmup = false;
}
bool RPCIsInWarmup(std::string* outStatus)
{
LOCK(cs_rpcWarmup);
if (outStatus)
*outStatus = rpcWarmupStatus;
return fRPCInWarmup;
}
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 != "getblocktemplate")
LogPrint("rpc", "ThreadRPCServer method=%s\n", SanitizeString(strMethod));
// 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";
}
static bool HTTPReq_JSONRPC(AcceptedConnection* conn,
string& strRequest,
map<string, string>& mapHeaders,
bool fRun)
{
// Check authorization
if (mapHeaders.count("authorization") == 0) {
conn->stream() << HTTPError(HTTP_UNAUTHORIZED, false) << std::flush;
return false;
}
if (!HTTPAuthorized(mapHeaders)) {
LogPrintf("ThreadRPCServer incorrect password attempt from %s\n", conn->peer_address_to_string());
/* Deter brute-forcing
If this results in a DoS the user really
shouldn't have their RPC port exposed. */
MilliSleep(250);
conn->stream() << HTTPError(HTTP_UNAUTHORIZED, false) << std::flush;
return false;
}
JSONRequest jreq;
try {
// Parse request
Value valRequest;
if (!read_string(strRequest, valRequest))
throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
// Return immediately if in warmup
{
LOCK(cs_rpcWarmup);
if (fRPCInWarmup)
throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
}
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() << HTTPReplyHeader(HTTP_OK, fRun, strReply.size()) << strReply << std::flush;
} catch (Object& objError) {
ErrorReply(conn->stream(), objError, jreq.id);
return false;
} catch (std::exception& e) {
ErrorReply(conn->stream(), JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
return false;
}
return true;
}
void ServiceConnection(AcceptedConnection* conn)
{
bool fRun = true;
while (fRun && !ShutdownRequested()) {
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, MAX_SIZE);
// HTTP Keep-Alive is false; close connection immediately
if ((mapHeaders["connection"] == "close") || (!GetBoolArg("-rpckeepalive", true)))
fRun = false;
// Process via JSON-RPC API
if (strURI == "/") {
if (!HTTPReq_JSONRPC(conn, strRequest, mapHeaders, fRun))
break;
// Process via HTTP REST API
} else if (strURI.substr(0, 6) == "/rest/" && GetBoolArg("-rest", false)) {
if (!HTTPReq_REST(conn, strURI, mapHeaders, fRun))
break;
} else {
conn->stream() << HTTPError(HTTP_NOT_FOUND, false) << std::flush;
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");
#ifdef ENABLE_WALLET
if (pcmd->reqWallet && !pwalletMain)
throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found (disabled)");
#endif
// 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);
#ifdef ENABLE_WALLET
else if (!pwalletMain) {
LOCK(cs_main);
result = pcmd->actor(params, false);
} else {
while (true) {
TRY_LOCK(cs_main, lockMain);
if (!lockMain) {
MilliSleep(50);
continue;
}
while (true) {