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rpcserver.cpp
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rpcserver.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core 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 "random.h"
#include "sync.h"
#include "ui_interface.h"
#include "util.h"
#include "utilmoneystr.h"
#include "utilstrencodings.h"
#ifdef ENABLE_WALLET
#include "wallet/wallet.h"
#endif
#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/signals2/signal.hpp>
#include <boost/thread.hpp>
#include "univalue/univalue.h"
using namespace boost::asio;
using namespace RPCServer;
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 boost::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;
static struct CRPCSignals
{
boost::signals2::signal<void ()> Started;
boost::signals2::signal<void ()> Stopped;
boost::signals2::signal<void (const CRPCCommand&)> PreCommand;
boost::signals2::signal<void (const CRPCCommand&)> PostCommand;
} g_rpcSignals;
void RPCServer::OnStarted(boost::function<void ()> slot)
{
g_rpcSignals.Started.connect(slot);
}
void RPCServer::OnStopped(boost::function<void ()> slot)
{
g_rpcSignals.Stopped.connect(slot);
}
void RPCServer::OnPreCommand(boost::function<void (const CRPCCommand&)> slot)
{
g_rpcSignals.PreCommand.connect(boost::bind(slot, _1));
}
void RPCServer::OnPostCommand(boost::function<void (const CRPCCommand&)> slot)
{
g_rpcSignals.PostCommand.connect(boost::bind(slot, _1));
}
void RPCTypeCheck(const UniValue& params,
const list<UniValue::VType>& typesExpected,
bool fAllowNull)
{
unsigned int i = 0;
BOOST_FOREACH(UniValue::VType t, typesExpected)
{
if (params.size() <= i)
break;
const UniValue& v = params[i];
if (!((v.type() == t) || (fAllowNull && (v.isNull()))))
{
string err = strprintf("Expected type %s, got %s",
uvTypeName(t), uvTypeName(v.type()));
throw JSONRPCError(RPC_TYPE_ERROR, err);
}
i++;
}
}
void RPCTypeCheckObj(const UniValue& o,
const map<string, UniValue::VType>& typesExpected,
bool fAllowNull)
{
BOOST_FOREACH(const PAIRTYPE(string, UniValue::VType)& t, typesExpected)
{
const UniValue& v = find_value(o, t.first);
if (!fAllowNull && v.isNull())
throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
if (!((v.type() == t.second) || (fAllowNull && (v.isNull()))))
{
string err = strprintf("Expected type %s for %s, got %s",
uvTypeName(t.second), t.first, uvTypeName(v.type()));
throw JSONRPCError(RPC_TYPE_ERROR, err);
}
}
}
CAmount AmountFromValue(const UniValue& value)
{
if (!value.isReal() && !value.isNum())
throw JSONRPCError(RPC_TYPE_ERROR, "Amount is not a number");
CAmount amount;
if (!ParseFixedPoint(value.getValStr(), 8, &amount))
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
if (!MoneyRange(amount))
throw JSONRPCError(RPC_TYPE_ERROR, "Amount out of range");
return amount;
}
UniValue ValueFromAmount(const CAmount& amount)
{
return UniValue(UniValue::VREAL, FormatMoney(amount));
}
uint256 ParseHashV(const UniValue& v, string strName)
{
string strHex;
if (v.isStr())
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 UniValue& o, string strKey)
{
return ParseHashV(find_value(o, strKey), strKey);
}
vector<unsigned char> ParseHexV(const UniValue& v, string strName)
{
string strHex;
if (v.isStr())
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 UniValue& o, string strKey)
{
return ParseHexV(find_value(o, strKey), strKey);
}
/**
* Note: This interface may still be subject to change.
*/
std::string CRPCTable::help(const std::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;
try
{
UniValue params;
rpcfn_type pfn = pcmd->actor;
if (setDone.insert(pfn).second)
(*pfn)(params, true);
}
catch (const 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;
}
UniValue help(const UniValue& 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);
}
UniValue stop(const UniValue& 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[] =
{ // category name actor (function) okSafeMode
// --------------------- ------------------------ ----------------------- ----------
/* Overall control/query calls */
{ "control", "getinfo", &getinfo, true }, /* uses wallet if enabled */
{ "control", "help", &help, true },
{ "control", "stop", &stop, true },
/* P2P networking */
{ "network", "getnetworkinfo", &getnetworkinfo, true },
{ "network", "addnode", &addnode, true },
{ "network", "disconnectnode", &disconnectnode, true },
{ "network", "getaddednodeinfo", &getaddednodeinfo, true },
{ "network", "getconnectioncount", &getconnectioncount, true },
{ "network", "getnettotals", &getnettotals, true },
{ "network", "getpeerinfo", &getpeerinfo, true },
{ "network", "ping", &ping, true },
{ "network", "setban", &setban, true },
{ "network", "listbanned", &listbanned, true },
{ "network", "clearbanned", &clearbanned, true },
/* Block chain and UTXO */
{ "blockchain", "getblockchaininfo", &getblockchaininfo, true },
{ "blockchain", "getbestblockhash", &getbestblockhash, true },
{ "blockchain", "getblockcount", &getblockcount, true },
{ "blockchain", "getblock", &getblock, true },
{ "blockchain", "getblockhash", &getblockhash, true },
{ "blockchain", "getblockheader", &getblockheader, true },
{ "blockchain", "getchaintips", &getchaintips, true },
{ "blockchain", "getdifficulty", &getdifficulty, true },
{ "blockchain", "getmempoolinfo", &getmempoolinfo, true },
{ "blockchain", "getrawmempool", &getrawmempool, true },
{ "blockchain", "gettxout", &gettxout, true },
{ "blockchain", "gettxoutproof", &gettxoutproof, true },
{ "blockchain", "verifytxoutproof", &verifytxoutproof, true },
{ "blockchain", "gettxoutsetinfo", &gettxoutsetinfo, true },
{ "blockchain", "verifychain", &verifychain, true },
/* Mining */
{ "mining", "getblocktemplate", &getblocktemplate, true },
{ "mining", "getmininginfo", &getmininginfo, true },
{ "mining", "getnetworkhashps", &getnetworkhashps, true },
{ "mining", "prioritisetransaction", &prioritisetransaction, true },
{ "mining", "submitblock", &submitblock, true },
/* Coin generation */
{ "generating", "getgenerate", &getgenerate, true },
{ "generating", "setgenerate", &setgenerate, true },
{ "generating", "generate", &generate, true },
/* Raw transactions */
{ "rawtransactions", "createrawtransaction", &createrawtransaction, true },
{ "rawtransactions", "decoderawtransaction", &decoderawtransaction, true },
{ "rawtransactions", "decodescript", &decodescript, true },
{ "rawtransactions", "getrawtransaction", &getrawtransaction, true },
{ "rawtransactions", "sendrawtransaction", &sendrawtransaction, false },
{ "rawtransactions", "signrawtransaction", &signrawtransaction, false }, /* uses wallet if enabled */
#ifdef ENABLE_WALLET
{ "rawtransactions", "fundrawtransaction", &fundrawtransaction, false },
#endif
/* Utility functions */
{ "util", "createmultisig", &createmultisig, true },
{ "util", "validateaddress", &validateaddress, true }, /* uses wallet if enabled */
{ "util", "verifymessage", &verifymessage, true },
{ "util", "estimatefee", &estimatefee, true },
{ "util", "estimatepriority", &estimatepriority, true },
/* Not shown in help */
{ "hidden", "invalidateblock", &invalidateblock, true },
{ "hidden", "reconsiderblock", &reconsiderblock, true },
{ "hidden", "setmocktime", &setmocktime, true },
#ifdef ENABLE_WALLET
{ "hidden", "resendwallettransactions", &resendwallettransactions, true},
#endif
#ifdef ENABLE_WALLET
/* Wallet */
{ "wallet", "addmultisigaddress", &addmultisigaddress, true },
{ "wallet", "backupwallet", &backupwallet, true },
{ "wallet", "dumpprivkey", &dumpprivkey, true },
{ "wallet", "dumpwallet", &dumpwallet, true },
{ "wallet", "encryptwallet", &encryptwallet, true },
{ "wallet", "getaccountaddress", &getaccountaddress, true },
{ "wallet", "getaccount", &getaccount, true },
{ "wallet", "getaddressesbyaccount", &getaddressesbyaccount, true },
{ "wallet", "getbalance", &getbalance, false },
{ "wallet", "getnewaddress", &getnewaddress, true },
{ "wallet", "getrawchangeaddress", &getrawchangeaddress, true },
{ "wallet", "getreceivedbyaccount", &getreceivedbyaccount, false },
{ "wallet", "getreceivedbyaddress", &getreceivedbyaddress, false },
{ "wallet", "gettransaction", &gettransaction, false },
{ "wallet", "getunconfirmedbalance", &getunconfirmedbalance, false },
{ "wallet", "getwalletinfo", &getwalletinfo, false },
{ "wallet", "importprivkey", &importprivkey, true },
{ "wallet", "importwallet", &importwallet, true },
{ "wallet", "importaddress", &importaddress, true },
{ "wallet", "keypoolrefill", &keypoolrefill, true },
{ "wallet", "listaccounts", &listaccounts, false },
{ "wallet", "listaddressgroupings", &listaddressgroupings, false },
{ "wallet", "listlockunspent", &listlockunspent, false },
{ "wallet", "listreceivedbyaccount", &listreceivedbyaccount, false },
{ "wallet", "listreceivedbyaddress", &listreceivedbyaddress, false },
{ "wallet", "listsinceblock", &listsinceblock, false },
{ "wallet", "listtransactions", &listtransactions, false },
{ "wallet", "listunspent", &listunspent, false },
{ "wallet", "lockunspent", &lockunspent, true },
{ "wallet", "move", &movecmd, false },
{ "wallet", "sendfrom", &sendfrom, false },
{ "wallet", "sendmany", &sendmany, false },
{ "wallet", "sendtoaddress", &sendtoaddress, false },
{ "wallet", "setaccount", &setaccount, true },
{ "wallet", "settxfee", &settxfee, true },
{ "wallet", "signmessage", &signmessage, true },
{ "wallet", "walletlock", &walletlock, true },
{ "wallet", "walletpassphrasechange", &walletpassphrasechange, true },
{ "wallet", "walletpassphrase", &walletpassphrase, 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[](const std::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 UniValue& objError, const UniValue& 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(NullUniValue, 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(
boost::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;
boost::asio::ssl::stream<typename Protocol::socket> sslStream;
private:
SSLIOStreamDevice<Protocol> _d;
boost::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,
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, typename SocketAcceptorService>
static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > 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, SocketAcceptorService>,
acceptor,
boost::ref(context),
fUseSSL,
conn,
_1));
}
/**
* 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,
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 != boost::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(boost::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"] == "")
{
unsigned char rand_pwd[32];
GetRandBytes(rand_pwd, 32);
uiInterface.ThreadSafeMessageBox(strprintf(
_("To use bitcoind, or the -server option to bitcoin-qt, you must set an 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"),
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 boost::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 | ssl::context::no_sslv3);
boost::filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert"));
if (!pathCertFile.is_complete()) pathCertFile = boost::filesystem::path(GetDataDir()) / pathCertFile;
if (boost::filesystem::exists(pathCertFile)) rpc_ssl_context->use_certificate_chain_file(pathCertFile.string());
else LogPrintf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string());
boost::filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem"));
if (!pathPKFile.is_complete()) pathPKFile = boost::filesystem::path(GetDataDir()) / pathPKFile;
if (boost::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->impl(), 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(boost::asio::ip::address_v6::loopback(), defaultPort));
vEndpoints.push_back(ip::tcp::endpoint(boost::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(boost::asio::ip::address_v6::any(), defaultPort));
vEndpoints.push_back(ip::tcp::endpoint(boost::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 {
boost::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 != boost::asio::ip::address_v6::any()), v6_only_error);
acceptor->bind(endpoint);
acceptor->listen(socket_base::max_connections);
RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
fListening = true;
rpc_acceptors.push_back(acceptor);
// If dual IPv6/IPv4 bind successful, skip binding to IPv4 separately
if(bBindAny && bindAddress == boost::asio::ip::address_v6::any() && !v6_only_error)
break;
}
catch (const 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(&boost::asio::io_service::run, rpc_io_service));
fRPCRunning = true;
g_rpcSignals.Started();
}
void StartDummyRPCThread()
{
if(rpc_io_service == NULL)
{
rpc_io_service = new boost::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 boost::asio::io_service::work(*rpc_io_service);
rpc_worker_group = new boost::thread_group();
rpc_worker_group->create_thread(boost::bind(&boost::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
// boost::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();
g_rpcSignals.Stopped();
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(boost::posix_time::seconds(nSeconds));
deadlineTimers[name]->async_wait(boost::bind(RPCRunHandler, _1, func));
}
class JSONRequest
{
public:
UniValue id;
string strMethod;
UniValue params;
JSONRequest() { id = NullUniValue; }
void parse(const UniValue& valRequest);
};
void JSONRequest::parse(const UniValue& valRequest)
{
// Parse request
if (!valRequest.isObject())
throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
const UniValue& request = valRequest.get_obj();
// Parse id now so errors from here on will have the id
id = find_value(request, "id");
// Parse method
UniValue valMethod = find_value(request, "method");
if (valMethod.isNull())
throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
if (!valMethod.isStr())
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
UniValue valParams = find_value(request, "params");
if (valParams.isArray())
params = valParams.get_array();
else if (valParams.isNull())
params = UniValue(UniValue::VARR);
else
throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
}
static UniValue JSONRPCExecOne(const UniValue& req)
{
UniValue rpc_result(UniValue::VOBJ);
JSONRequest jreq;
try {
jreq.parse(req);
UniValue result = tableRPC.execute(jreq.strMethod, jreq.params);
rpc_result = JSONRPCReplyObj(result, NullUniValue, jreq.id);
}
catch (const UniValue& objError)
{
rpc_result = JSONRPCReplyObj(NullUniValue, objError, jreq.id);
}
catch (const std::exception& e)
{
rpc_result = JSONRPCReplyObj(NullUniValue,
JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
}
return rpc_result;
}
static string JSONRPCExecBatch(const UniValue& vReq)
{
UniValue ret(UniValue::VARR);
for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
return ret.write() + "\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
We don't support exposing the RPC port, so this shouldn't result
in a DoS. */
MilliSleep(250);
conn->stream() << HTTPError(HTTP_UNAUTHORIZED, false) << std::flush;
return false;
}
JSONRequest jreq;
try
{
// Parse request
UniValue valRequest;
if (!valRequest.read(strRequest))
throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
string strReply;
// singleton request
if (valRequest.isObject()) {
jreq.parse(valRequest);
UniValue result = tableRPC.execute(jreq.strMethod, jreq.params);
// Send reply
strReply = JSONRPCReply(result, NullUniValue, jreq.id);
// array of requests
} else if (valRequest.isArray())
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 (const UniValue& objError)
{
ErrorReply(conn->stream(), objError, jreq.id);
return false;
}
catch (const 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, strRequest, mapHeaders, fRun))
break;
} else {
conn->stream() << HTTPError(HTTP_NOT_FOUND, false) << std::flush;
break;
}
}
}