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rpcserver.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2014-2016 The Bitcoin Core developers
// Original code was distributed under the MIT software license.
// Copyright (c) 2014-2019 Coin Sciences Ltd
// MultiChain code distributed under the GPLv3 license, see COPYING file.
#include "rpc/rpcserver.h"
#include "rpc/rpcasio.h"
#include "structs/base58.h"
#include "core/init.h"
#include "core/main.h"
#include "ui/ui_interface.h"
#include "utils/util.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/thread.hpp>
#include "json/json_spirit_writer_template.h"
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;
//! Convert boost::asio address to CNetAddr
extern CNetAddr BoostAsioToCNetAddr(boost::asio::ip::address address);
string JSONRPCRequestForLog(const string& strMethod, const Array& params, const Value& id)
{
Object request;
request.push_back(Pair("method", strMethod));
map<string, int>::iterator it = mapLogParamCounts.find(strMethod);
if (it != mapLogParamCounts.end())
{
Array visible_params;
if(it->second != 0)
{
if(strMethod == "signrawtransaction")
{
visible_params=params;
if (visible_params.size() > 2 && visible_params[2].type() != null_type)
{
visible_params[2]="[<PRIVATE KEYS>]";
}
}
}
request.push_back(Pair("params", visible_params));
}
else
{
request.push_back(Pair("params", params));
}
request.push_back(Pair("id", id));
/*
request.push_back(Pair("chain_name", string(mc_gState->m_Params->NetworkName())));
*/
return write_string(Value(request), false);// + "\n";
}
string JSONRPCMethodIDForLog(const string& strMethod, const Value& id)
{
Object request;
request.push_back(Pair("method", strMethod));
request.push_back(Pair("id", id));
return write_string(Value(request), false);// + "\n";
}
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();
/* MCHN START */
if(COIN == 0)
{
if(dAmount != 0)
{
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
}
}
else
{
if (dAmount < 0.0 || dAmount > (double)MAX_MONEY/(double)COIN) // MCHN - was <=
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
}
// if (dAmount < 0.0 || dAmount > 21000000.0) // MCHN - was <=
// throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
/* MCHN END */
CAmount nAmount = roundint64(dAmount * COIN);
if (!MoneyRange(nAmount))
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
return nAmount;
}
Value ValueFromAmount(const CAmount& amount)
{
/* MCHN START */
if(COIN == 0)
{
return (double)amount;
}
/* MCHN END */
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+"')");
if (64 != strHex.length())
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("%s must be of length %d (not %d)", strName, 64, strHex.length()));
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
/* MCHN START */
string strHelp="";
map<string, string>::iterator it = mapHelpStrings.find(strMethod);
if (it == mapHelpStrings.end())
{
try
{
Array params;
rpcfn_type pfn = pcmd->actor;
if (setDone.insert(pfn).second)
(*pfn)(params, true);
}
catch (std::exception& e)
{
if(strCommand != "")
{
strHelp = string(e.what());
}
}
}
else
{
strHelp=it->second;
}
if(strHelp != "")
{
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";
}
/*
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";
}
*/
}
/* MCHN END */
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 message not found\n");
string strCommand;
if (params.size() > 0)
strCommand = params[0].get_str();
if(strCommand.size())
{
if(setAllowedWhenLimited.size())
{
if( setAllowedWhenLimited.count(strCommand) == 0 )
{
throw JSONRPCError(RPC_NOT_ALLOWED, "Method not allowed with current setting of -rpcallowmethod runtime parameter");
}
}
}
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("Help message not found\n");
// Shutdown will take long enough that the response should get back
StartShutdown();
return "MultiChain server stopping";
}
/* MCHN START */
string AllowedPausedServices()
{
string ret="incoming,mining,offchain";
return ret;
}
uint32_t GetPausedServices(const char *str)
{
uint32_t result,type;
char* ptr;
char* start;
char* ptrEnd;
char c;
ptr=(char*)str;
ptrEnd=ptr+strlen(ptr);
start=ptr;
result=0;
while(ptr<=ptrEnd)
{
c=*ptr;
if( (c == ',') || (c ==0x00))
{
if(ptr > start+4)
{
type=0;
if(memcmp(start,"incoming", ptr-start) == 0)type = MC_NPS_INCOMING;
if(memcmp(start,"mining", ptr-start) == 0)type = MC_NPS_MINING;
if(memcmp(start,"reaccepting", ptr-start) == 0)type = MC_NPS_REACCEPT;
if(memcmp(start,"offchain", ptr-start) == 0)type = MC_NPS_OFFCHAIN;
if(memcmp(start,"chunks", ptr-start) == 0)type = MC_NPS_CHUNKS;
if(type == 0)
{
return 0;
}
result |= type;
start=ptr+1;
}
}
ptr++;
}
return result;
}
Value pausecmd(const Array& params, bool fHelp)
{
if (fHelp || params.size() < 1 || params.size() > 1)
throw runtime_error("Help message not found\n");
uint32_t type=0;
if (params.size() > 0 && params[0].type() != null_type && !params[0].get_str().empty())
{
type=GetPausedServices(params[0].get_str().c_str());
}
if(type == 0)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid task");
LOCK(cs_main);
mc_gState->m_NodePausedState |= type;
LogPrintf("Node paused state is set to %08X\n",mc_gState->m_NodePausedState);
return "Paused";
}
Value resumecmd(const Array& params, bool fHelp)
{
if (fHelp || params.size() < 1 || params.size() > 1)
throw runtime_error("Help message not found\n");
uint32_t type=0;
if (params.size() > 0 && params[0].type() != null_type && !params[0].get_str().empty())
{
type=GetPausedServices(params[0].get_str().c_str());
}
if(type == 0)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid task");
LOCK(cs_main);
mc_gState->m_NodePausedState &= (MC_NPS_ALL ^ type);
if( type & MC_NPS_REACCEPT )
{
pwalletMain->ReacceptWalletTransactions();
}
LogPrintf("Node paused state is set to %08X\n",mc_gState->m_NodePausedState);
return "Resumed";
}
/* END */
CRPCTable::CRPCTable()
{
}
void CRPCTable::initialize()
{
unsigned int vcidx;
for (vcidx = 0; vcidx < vStaticRPCCommands.size(); vcidx++)
{
const CRPCCommand *pcmd;
pcmd = &vStaticRPCCommands[vcidx];
mapCommands[pcmd->name] = pcmd;
}
for (vcidx = 0; vcidx < vStaticRPCWalletReadCommands.size(); vcidx++)
{
const CRPCCommand *pcmd;
pcmd = &vStaticRPCWalletReadCommands[vcidx];
mapWalletReadCommands[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, 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 != 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 mc_InitRPCListIfLimited()
{
if (mapArgs.count("-rpcallowmethod"))
{
setAllowedWhenLimited.insert("help");
BOOST_FOREACH(const std::string& methods, mapMultiArgs["-rpcallowmethod"])
{
stringstream ss(methods);
string tok;
while(getline(ss, tok, ','))
{
setAllowedWhenLimited.insert(tok);
}
}
}
}
void StartRPCThreads(string& strError)
{
mc_InitRPCList(vStaticRPCCommands,vStaticRPCWalletReadCommands);
mc_InitRPCListIfLimited();
tableRPC.initialize();
strError="";
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() + " ";
if(fDebug)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 multichaind, you must set an rpcpassword in the configuration file:\n"
"%s\n"
"It is recommended you use the following random password:\n"
"rpcuser=multichainrpc\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 \"MultiChain Alert\" [email protected]\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(*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);
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());
strError += strprintf("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());
strError += strprintf("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());
}
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);
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();
#ifdef MAC_OSX
boost::thread::attributes attrs;
attrs.set_stack_size(8*1024*1024);
for (int i = 0; i < GetArg("-rpcthreads", 4); i++)
{
boost::thread *lpThread=new thread(attrs,boost::bind(&asio::io_service::run, rpc_io_service));
rpc_worker_group->add_thread(lpThread);
}
#else
for (int i = 0; i < GetArg("-rpcthreads", 4); i++)
rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
#endif
fRPCRunning = true;
if(strError.size())
{
strError += "Node may be unable to process API requests.\n";
}
}
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")
if(fDebug)LogPrint("rpc", "ThreadRPCServer method=%s\n", SanitizeString(strMethod));
/* MCHN START */
Value valChainName = find_value(request, "chain_name");
if (valChainName.type() != null_type)
{
if (valChainName.type() != str_type)
throw JSONRPCError(RPC_INVALID_REQUEST, "Chain name must be a string");
if (strcmp(valChainName.get_str().c_str(),mc_gState->m_Params->NetworkName()))
throw JSONRPCError(RPC_INVALID_REQUEST, "Wrong chain name");