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bitcoinrpc.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "chainparams.h"
#include "init.h"
#include "util.h"
#include "sync.h"
#include "ui_interface.h"
#include "base58.h"
#include "bitcoinrpc.h"
#include "db.h"
#include <boost/algorithm/string.hpp>
#include <boost/asio.hpp>
#include <boost/asio/ip/v6_only.hpp>
#include <boost/asio/ssl.hpp>
#include <boost/bind.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <boost/foreach.hpp>
#include <boost/iostreams/concepts.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/shared_ptr.hpp>
#include <list>
using namespace std;
using namespace boost;
using namespace boost::asio;
using namespace json_spirit;
static std::string strRPCUserColonPass;
// These are created by StartRPCThreads, destroyed in StopRPCThreads
static asio::io_service* rpc_io_service = NULL;
static map<string, boost::shared_ptr<deadline_timer> > deadlineTimers;
static ssl::context* rpc_ssl_context = NULL;
static boost::thread_group* rpc_worker_group = NULL;
Object JSONRPCError(int code, const string& message)
{
Object error;
error.push_back(Pair("code", code));
error.push_back(Pair("message", message));
return error;
}
void RPCTypeCheck(const Array& params,
const list<Value_type>& typesExpected,
bool fAllowNull)
{
unsigned int i = 0;
BOOST_FOREACH(Value_type t, typesExpected)
{
if (params.size() <= i)
break;
const Value& v = params[i];
if (!((v.type() == t) || (fAllowNull && (v.type() == null_type))))
{
string err = strprintf("Expected type %s, got %s",
Value_type_name[t], Value_type_name[v.type()]);
throw JSONRPCError(RPC_TYPE_ERROR, err);
}
i++;
}
}
void RPCTypeCheck(const Object& o,
const map<string, Value_type>& typesExpected,
bool fAllowNull)
{
BOOST_FOREACH(const PAIRTYPE(string, Value_type)& t, typesExpected)
{
const Value& v = find_value(o, t.first);
if (!fAllowNull && v.type() == null_type)
throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first.c_str()));
if (!((v.type() == t.second) || (fAllowNull && (v.type() == null_type))))
{
string err = strprintf("Expected type %s for %s, got %s",
Value_type_name[t.second], t.first.c_str(), Value_type_name[v.type()]);
throw JSONRPCError(RPC_TYPE_ERROR, err);
}
}
}
int64 AmountFromValue(const Value& value)
{
double dAmount = value.get_real();
if (dAmount <= 0.0 || dAmount > 21000000.0)
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
int64 nAmount = roundint64(dAmount * COIN);
if (!MoneyRange(nAmount))
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
return nAmount;
}
Value ValueFromAmount(int64 amount)
{
return (double)amount / (double)COIN;
}
std::string HexBits(unsigned int nBits)
{
union {
int32_t nBits;
char cBits[4];
} uBits;
uBits.nBits = htonl((int32_t)nBits);
return HexStr(BEGIN(uBits.cBits), END(uBits.cBits));
}
uint256 ParseHashV(const Value& v, string strName)
{
string strHex;
if (v.type() == str_type)
strHex = v.get_str();
if (!IsHex(strHex)) // Note: IsHex("") is false
throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
uint256 result;
result.SetHex(strHex);
return result;
}
uint256 ParseHashO(const Object& o, string strKey)
{
return ParseHashV(find_value(o, strKey), strKey);
}
vector<unsigned char> ParseHexV(const Value& v, string strName)
{
string strHex;
if (v.type() == str_type)
strHex = v.get_str();
if (!IsHex(strHex))
throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
return ParseHex(strHex);
}
vector<unsigned char> ParseHexO(const Object& o, string strKey)
{
return ParseHexV(find_value(o, strKey), strKey);
}
///
/// Note: This interface may still be subject to change.
///
string CRPCTable::help(string strCommand) const
{
string strRet;
set<rpcfn_type> setDone;
for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
{
const CRPCCommand *pcmd = mi->second;
string strMethod = mi->first;
// We already filter duplicates, but these deprecated screw up the sort order
if (strMethod.find("label") != string::npos)
continue;
if (strCommand != "" && strMethod != strCommand)
continue;
try
{
Array params;
rpcfn_type pfn = pcmd->actor;
if (setDone.insert(pfn).second)
(*pfn)(params, true);
}
catch (std::exception& e)
{
// Help text is returned in an exception
string strHelp = string(e.what());
if (strCommand == "")
if (strHelp.find('\n') != string::npos)
strHelp = strHelp.substr(0, strHelp.find('\n'));
strRet += strHelp + "\n";
}
}
if (strRet == "")
strRet = strprintf("help: unknown command: %s\n", strCommand.c_str());
strRet = strRet.substr(0,strRet.size()-1);
return strRet;
}
Value help(const Array& params, bool fHelp)
{
if (fHelp || params.size() > 1)
throw runtime_error(
"help [command]\n"
"List commands, or get help for a command.");
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"
"Stop Bitcoin server.");
// Shutdown will take long enough that the response should get back
StartShutdown();
return "Bitcoin server stopping";
}
//
// Call Table
//
static const CRPCCommand vRPCCommands[] =
{ // name actor (function) okSafeMode threadSafe
// ------------------------ ----------------------- ---------- ----------
{ "help", &help, true, true },
{ "stop", &stop, true, true },
{ "getblockcount", &getblockcount, true, false },
{ "getbestblockhash", &getbestblockhash, true, false },
{ "getconnectioncount", &getconnectioncount, true, false },
{ "getpeerinfo", &getpeerinfo, true, false },
{ "addnode", &addnode, true, true },
{ "getaddednodeinfo", &getaddednodeinfo, true, true },
{ "getdifficulty", &getdifficulty, true, false },
{ "getgenerate", &getgenerate, true, false },
{ "setgenerate", &setgenerate, true, false },
{ "gethashespersec", &gethashespersec, true, false },
{ "getinfo", &getinfo, true, false },
{ "getmininginfo", &getmininginfo, true, false },
{ "getnewaddress", &getnewaddress, true, false },
{ "getaccountaddress", &getaccountaddress, true, false },
{ "getrawchangeaddress", &getrawchangeaddress, true, false },
{ "setaccount", &setaccount, true, false },
{ "getaccount", &getaccount, false, false },
{ "getaddressesbyaccount", &getaddressesbyaccount, true, false },
{ "sendtoaddress", &sendtoaddress, false, false },
{ "getreceivedbyaddress", &getreceivedbyaddress, false, false },
{ "getreceivedbyaccount", &getreceivedbyaccount, false, false },
{ "listreceivedbyaddress", &listreceivedbyaddress, false, false },
{ "listreceivedbyaccount", &listreceivedbyaccount, false, false },
{ "backupwallet", &backupwallet, true, false },
{ "keypoolrefill", &keypoolrefill, true, false },
{ "walletpassphrase", &walletpassphrase, true, false },
{ "walletpassphrasechange", &walletpassphrasechange, false, false },
{ "walletlock", &walletlock, true, false },
{ "encryptwallet", &encryptwallet, false, false },
{ "validateaddress", &validateaddress, true, false },
{ "getbalance", &getbalance, false, false },
{ "move", &movecmd, false, false },
{ "sendfrom", &sendfrom, false, false },
{ "sendmany", &sendmany, false, false },
{ "addmultisigaddress", &addmultisigaddress, false, false },
{ "createmultisig", &createmultisig, true, true },
{ "getrawmempool", &getrawmempool, true, false },
{ "getblock", &getblock, false, false },
{ "getblockhash", &getblockhash, false, false },
{ "gettransaction", &gettransaction, false, false },
{ "listtransactions", &listtransactions, false, false },
{ "listaddressgroupings", &listaddressgroupings, false, false },
{ "signmessage", &signmessage, false, false },
{ "verifymessage", &verifymessage, false, false },
{ "getwork", &getwork, true, false },
{ "listaccounts", &listaccounts, false, false },
{ "settxfee", &settxfee, false, false },
{ "getblocktemplate", &getblocktemplate, true, false },
{ "submitblock", &submitblock, false, false },
{ "listsinceblock", &listsinceblock, false, false },
{ "dumpprivkey", &dumpprivkey, true, false },
{ "dumpwallet", &dumpwallet, true, false },
{ "importprivkey", &importprivkey, false, false },
{ "importwallet", &importwallet, false, false },
{ "listunspent", &listunspent, false, false },
{ "getrawtransaction", &getrawtransaction, false, false },
{ "createrawtransaction", &createrawtransaction, false, false },
{ "decoderawtransaction", &decoderawtransaction, false, false },
{ "decodescript", &decodescript, false, false },
{ "signrawtransaction", &signrawtransaction, false, false },
{ "sendrawtransaction", &sendrawtransaction, false, false },
{ "gettxoutsetinfo", &gettxoutsetinfo, true, false },
{ "gettxout", &gettxout, true, false },
{ "lockunspent", &lockunspent, false, false },
{ "listlockunspent", &listlockunspent, false, false },
{ "verifychain", &verifychain, true, false },
};
CRPCTable::CRPCTable()
{
unsigned int vcidx;
for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++)
{
const CRPCCommand *pcmd;
pcmd = &vRPCCommands[vcidx];
mapCommands[pcmd->name] = pcmd;
}
}
const CRPCCommand *CRPCTable::operator[](string name) const
{
map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
if (it == mapCommands.end())
return NULL;
return (*it).second;
}
//
// HTTP protocol
//
// This ain't Apache. We're just using HTTP header for the length field
// and to be compatible with other JSON-RPC implementations.
//
string HTTPPost(const string& strMsg, const map<string,string>& mapRequestHeaders)
{
ostringstream s;
s << "POST / HTTP/1.1\r\n"
<< "User-Agent: bitcoin-json-rpc/" << FormatFullVersion() << "\r\n"
<< "Host: 127.0.0.1\r\n"
<< "Content-Type: application/json\r\n"
<< "Content-Length: " << strMsg.size() << "\r\n"
<< "Connection: close\r\n"
<< "Accept: application/json\r\n";
BOOST_FOREACH(const PAIRTYPE(string, string)& item, mapRequestHeaders)
s << item.first << ": " << item.second << "\r\n";
s << "\r\n" << strMsg;
return s.str();
}
string rfc1123Time()
{
char buffer[64];
time_t now;
time(&now);
struct tm* now_gmt = gmtime(&now);
string locale(setlocale(LC_TIME, NULL));
setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
setlocale(LC_TIME, locale.c_str());
return string(buffer);
}
static string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
{
if (nStatus == HTTP_UNAUTHORIZED)
return strprintf("HTTP/1.0 401 Authorization Required\r\n"
"Date: %s\r\n"
"Server: bitcoin-json-rpc/%s\r\n"
"WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 296\r\n"
"\r\n"
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\r\n"
"\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\r\n"
"<HTML>\r\n"
"<HEAD>\r\n"
"<TITLE>Error</TITLE>\r\n"
"<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=ISO-8859-1'>\r\n"
"</HEAD>\r\n"
"<BODY><H1>401 Unauthorized.</H1></BODY>\r\n"
"</HTML>\r\n", rfc1123Time().c_str(), FormatFullVersion().c_str());
const char *cStatus;
if (nStatus == HTTP_OK) cStatus = "OK";
else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request";
else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden";
else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found";
else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error";
else cStatus = "";
return strprintf(
"HTTP/1.1 %d %s\r\n"
"Date: %s\r\n"
"Connection: %s\r\n"
"Content-Length: %"PRIszu"\r\n"
"Content-Type: application/json\r\n"
"Server: bitcoin-json-rpc/%s\r\n"
"\r\n"
"%s",
nStatus,
cStatus,
rfc1123Time().c_str(),
keepalive ? "keep-alive" : "close",
strMsg.size(),
FormatFullVersion().c_str(),
strMsg.c_str());
}
bool ReadHTTPRequestLine(std::basic_istream<char>& stream, int &proto,
string& http_method, string& http_uri)
{
string str;
getline(stream, str);
// HTTP request line is space-delimited
vector<string> vWords;
boost::split(vWords, str, boost::is_any_of(" "));
if (vWords.size() < 2)
return false;
// HTTP methods permitted: GET, POST
http_method = vWords[0];
if (http_method != "GET" && http_method != "POST")
return false;
// HTTP URI must be an absolute path, relative to current host
http_uri = vWords[1];
if (http_uri.size() == 0 || http_uri[0] != '/')
return false;
// parse proto, if present
string strProto = "";
if (vWords.size() > 2)
strProto = vWords[2];
proto = 0;
const char *ver = strstr(strProto.c_str(), "HTTP/1.");
if (ver != NULL)
proto = atoi(ver+7);
return true;
}
int ReadHTTPStatus(std::basic_istream<char>& stream, int &proto)
{
string str;
getline(stream, str);
vector<string> vWords;
boost::split(vWords, str, boost::is_any_of(" "));
if (vWords.size() < 2)
return HTTP_INTERNAL_SERVER_ERROR;
proto = 0;
const char *ver = strstr(str.c_str(), "HTTP/1.");
if (ver != NULL)
proto = atoi(ver+7);
return atoi(vWords[1].c_str());
}
int ReadHTTPHeaders(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet)
{
int nLen = 0;
while (true)
{
string str;
std::getline(stream, str);
if (str.empty() || str == "\r")
break;
string::size_type nColon = str.find(":");
if (nColon != string::npos)
{
string strHeader = str.substr(0, nColon);
boost::trim(strHeader);
boost::to_lower(strHeader);
string strValue = str.substr(nColon+1);
boost::trim(strValue);
mapHeadersRet[strHeader] = strValue;
if (strHeader == "content-length")
nLen = atoi(strValue.c_str());
}
}
return nLen;
}
int ReadHTTPMessage(std::basic_istream<char>& stream, map<string,
string>& mapHeadersRet, string& strMessageRet,
int nProto)
{
mapHeadersRet.clear();
strMessageRet = "";
// Read header
int nLen = ReadHTTPHeaders(stream, mapHeadersRet);
if (nLen < 0 || nLen > (int)MAX_SIZE)
return HTTP_INTERNAL_SERVER_ERROR;
// Read message
if (nLen > 0)
{
vector<char> vch(nLen);
stream.read(&vch[0], nLen);
strMessageRet = string(vch.begin(), vch.end());
}
string sConHdr = mapHeadersRet["connection"];
if ((sConHdr != "close") && (sConHdr != "keep-alive"))
{
if (nProto >= 1)
mapHeadersRet["connection"] = "keep-alive";
else
mapHeadersRet["connection"] = "close";
}
return HTTP_OK;
}
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);
}
//
// JSON-RPC protocol. Bitcoin speaks version 1.0 for maximum compatibility,
// but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
// unspecified (HTTP errors and contents of 'error').
//
// 1.0 spec: http://json-rpc.org/wiki/specification
// 1.2 spec: http://groups.google.com/group/json-rpc/web/json-rpc-over-http
// http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx
//
string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id)
{
Object request;
request.push_back(Pair("method", strMethod));
request.push_back(Pair("params", params));
request.push_back(Pair("id", id));
return write_string(Value(request), false) + "\n";
}
Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id)
{
Object reply;
if (error.type() != null_type)
reply.push_back(Pair("result", Value::null));
else
reply.push_back(Pair("result", result));
reply.push_back(Pair("error", error));
reply.push_back(Pair("id", id));
return reply;
}
string JSONRPCReply(const Value& result, const Value& error, const Value& id)
{
Object reply = JSONRPCReplyObj(result, error, id);
return write_string(Value(reply), false) + "\n";
}
void ErrorReply(std::ostream& stream, const Object& objError, const Value& id)
{
// Send error reply from json-rpc error object
int nStatus = HTTP_INTERNAL_SERVER_ERROR;
int code = find_value(objError, "code").get_int();
if (code == RPC_INVALID_REQUEST) nStatus = HTTP_BAD_REQUEST;
else if (code == RPC_METHOD_NOT_FOUND) nStatus = HTTP_NOT_FOUND;
string strReply = JSONRPCReply(Value::null, objError, id);
stream << HTTPReply(nStatus, strReply, false) << std::flush;
}
bool ClientAllowed(const boost::asio::ip::address& address)
{
// Make sure that IPv4-compatible and IPv4-mapped IPv6 addresses are treated as IPv4 addresses
if (address.is_v6()
&& (address.to_v6().is_v4_compatible()
|| address.to_v6().is_v4_mapped()))
return ClientAllowed(address.to_v6().to_v4());
if (address == asio::ip::address_v4::loopback()
|| address == asio::ip::address_v6::loopback()
|| (address.is_v4()
// Check whether IPv4 addresses match 127.0.0.0/8 (loopback subnet)
&& (address.to_v4().to_ulong() & 0xff000000) == 0x7f000000))
return true;
const string strAddress = address.to_string();
const vector<string>& vAllow = mapMultiArgs["-rpcallowip"];
BOOST_FOREACH(string strAllow, vAllow)
if (WildcardMatch(strAddress, strAllow))
return true;
return false;
}
//
// IOStream device that speaks SSL but can also speak non-SSL
//
template <typename Protocol>
class SSLIOStreamDevice : public iostreams::device<iostreams::bidirectional> {
public:
SSLIOStreamDevice(asio::ssl::stream<typename Protocol::socket> &streamIn, bool fUseSSLIn) : stream(streamIn)
{
fUseSSL = fUseSSLIn;
fNeedHandshake = fUseSSLIn;
}
void handshake(ssl::stream_base::handshake_type role)
{
if (!fNeedHandshake) return;
fNeedHandshake = false;
stream.handshake(role);
}
std::streamsize read(char* s, std::streamsize n)
{
handshake(ssl::stream_base::server); // HTTPS servers read first
if (fUseSSL) return stream.read_some(asio::buffer(s, n));
return stream.next_layer().read_some(asio::buffer(s, n));
}
std::streamsize write(const char* s, std::streamsize n)
{
handshake(ssl::stream_base::client); // HTTPS clients write first
if (fUseSSL) return asio::write(stream, asio::buffer(s, n));
return asio::write(stream.next_layer(), asio::buffer(s, n));
}
bool connect(const std::string& server, const std::string& port)
{
ip::tcp::resolver resolver(stream.get_io_service());
ip::tcp::resolver::query query(server.c_str(), port.c_str());
ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
ip::tcp::resolver::iterator end;
boost::system::error_code error = asio::error::host_not_found;
while (error && endpoint_iterator != end)
{
stream.lowest_layer().close();
stream.lowest_layer().connect(*endpoint_iterator++, error);
}
if (error)
return false;
return true;
}
private:
bool fNeedHandshake;
bool fUseSSL;
asio::ssl::stream<typename Protocol::socket>& stream;
};
class AcceptedConnection
{
public:
virtual ~AcceptedConnection() {}
virtual std::iostream& stream() = 0;
virtual std::string peer_address_to_string() const = 0;
virtual void close() = 0;
};
template <typename Protocol>
class AcceptedConnectionImpl : public AcceptedConnection
{
public:
AcceptedConnectionImpl(
asio::io_service& io_service,
ssl::context &context,
bool fUseSSL) :
sslStream(io_service, context),
_d(sslStream, fUseSSL),
_stream(_d)
{
}
virtual std::iostream& stream()
{
return _stream;
}
virtual std::string peer_address_to_string() const
{
return peer.address().to_string();
}
virtual void close()
{
_stream.close();
}
typename Protocol::endpoint peer;
asio::ssl::stream<typename Protocol::socket> sslStream;
private:
SSLIOStreamDevice<Protocol> _d;
iostreams::stream< SSLIOStreamDevice<Protocol> > _stream;
};
void ServiceConnection(AcceptedConnection *conn);
// Forward declaration required for RPCListen
template <typename Protocol, typename SocketAcceptorService>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
ssl::context& context,
bool fUseSSL,
AcceptedConnection* conn,
const boost::system::error_code& error);
/**
* Sets up I/O resources to accept and handle a new connection.
*/
template <typename Protocol, typename SocketAcceptorService>
static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
ssl::context& context,
const bool fUseSSL)
{
// Accept connection
AcceptedConnectionImpl<Protocol>* conn = new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL);
acceptor->async_accept(
conn->sslStream.lowest_layer(),
conn->peer,
boost::bind(&RPCAcceptHandler<Protocol, SocketAcceptorService>,
acceptor,
boost::ref(context),
fUseSSL,
conn,
boost::asio::placeholders::error));
}
/**
* Accept and handle incoming connection.
*/
template <typename Protocol, typename SocketAcceptorService>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
ssl::context& context,
const bool fUseSSL,
AcceptedConnection* conn,
const boost::system::error_code& error)
{
// Immediately start accepting new connections, except when we're cancelled or our socket is closed.
if (error != asio::error::operation_aborted && acceptor->is_open())
RPCListen(acceptor, context, fUseSSL);
AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(conn);
// TODO: Actually handle errors
if (error)
{
delete conn;
}
// Restrict callers by IP. It is important to
// do this before starting client thread, to filter out
// certain DoS and misbehaving clients.
else if (tcp_conn && !ClientAllowed(tcp_conn->peer.address()))
{
// Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake.
if (!fUseSSL)
conn->stream() << HTTPReply(HTTP_FORBIDDEN, "", false) << std::flush;
delete conn;
}
else {
ServiceConnection(conn);
conn->close();
delete conn;
}
}
void StartRPCThreads()
{
strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
if (((mapArgs["-rpcpassword"] == "") ||
(mapArgs["-rpcuser"] == mapArgs["-rpcpassword"])) && Params().RequireRPCPassword())
{
unsigned char rand_pwd[32];
RAND_bytes(rand_pwd, 32);
string strWhatAmI = "To use bitcoind";
if (mapArgs.count("-server"))
strWhatAmI = strprintf(_("To use the %s option"), "\"-server\"");
else if (mapArgs.count("-daemon"))
strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\"");
uiInterface.ThreadSafeMessageBox(strprintf(
_("%s, you must set a rpcpassword in the configuration file:\n"
"%s\n"
"It is recommended you use the following random password:\n"
"rpcuser=bitcoinrpc\n"
"rpcpassword=%s\n"
"(you do not need to remember this password)\n"
"The username and password MUST NOT be the same.\n"
"If the file does not exist, create it with owner-readable-only file permissions.\n"
"It is also recommended to set alertnotify so you are notified of problems;\n"
"for example: alertnotify=echo %%s | mail -s \"Bitcoin Alert\" [email protected]\n"),
strWhatAmI.c_str(),
GetConfigFile().string().c_str(),
EncodeBase58(&rand_pwd[0],&rand_pwd[0]+32).c_str()),
"", CClientUIInterface::MSG_ERROR);
StartShutdown();
return;
}
assert(rpc_io_service == NULL);
rpc_io_service = new asio::io_service();
rpc_ssl_context = new ssl::context(*rpc_io_service, ssl::context::sslv23);
const bool fUseSSL = GetBoolArg("-rpcssl", false);
if (fUseSSL)
{
rpc_ssl_context->set_options(ssl::context::no_sslv2);
filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert"));
if (!pathCertFile.is_complete()) pathCertFile = filesystem::path(GetDataDir()) / pathCertFile;
if (filesystem::exists(pathCertFile)) rpc_ssl_context->use_certificate_chain_file(pathCertFile.string());
else LogPrintf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string().c_str());
filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem"));
if (!pathPKFile.is_complete()) pathPKFile = filesystem::path(GetDataDir()) / pathPKFile;
if (filesystem::exists(pathPKFile)) rpc_ssl_context->use_private_key_file(pathPKFile.string(), ssl::context::pem);
else LogPrintf("ThreadRPCServer ERROR: missing server private key file %s\n", pathPKFile.string().c_str());
string strCiphers = GetArg("-rpcsslciphers", "TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH");
SSL_CTX_set_cipher_list(rpc_ssl_context->impl(), strCiphers.c_str());
}
// Try a dual IPv6/IPv4 socket, falling back to separate IPv4 and IPv6 sockets
const bool loopback = !mapArgs.count("-rpcallowip");
asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any();
ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", Params().RPCPort()));
boost::system::error_code v6_only_error;
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
bool fListening = false;
std::string strerr;
try
{
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
// Try making the socket dual IPv6/IPv4 (if listening on the "any" address)
acceptor->set_option(boost::asio::ip::v6_only(loopback), v6_only_error);
acceptor->bind(endpoint);
acceptor->listen(socket_base::max_connections);
RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
fListening = true;
}
catch(boost::system::system_error &e)
{
strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv6, falling back to IPv4: %s"), endpoint.port(), e.what());
}
try {
// If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately
if (!fListening || loopback || v6_only_error)
{
bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any();
endpoint.address(bindAddress);
acceptor.reset(new ip::tcp::acceptor(*rpc_io_service));
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor->bind(endpoint);
acceptor->listen(socket_base::max_connections);
RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
fListening = true;
}
}
catch(boost::system::system_error &e)
{
strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv4: %s"), endpoint.port(), e.what());
}
if (!fListening) {
uiInterface.ThreadSafeMessageBox(strerr, "", CClientUIInterface::MSG_ERROR);
StartShutdown();
return;
}
rpc_worker_group = new boost::thread_group();
for (int i = 0; i < GetArg("-rpcthreads", 4); i++)
rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
}
void StopRPCThreads()
{
if (rpc_io_service == NULL) return;
deadlineTimers.clear();
rpc_io_service->stop();
rpc_worker_group->join_all();
delete rpc_worker_group; rpc_worker_group = NULL;
delete rpc_ssl_context; rpc_ssl_context = NULL;
delete rpc_io_service; rpc_io_service = NULL;
}
void RPCRunHandler(const boost::system::error_code& err, boost::function<void(void)> func)
{
if (!err)
func();
}
void RPCRunLater(const std::string& name, boost::function<void(void)> func, int64 nSeconds)
{
assert(rpc_io_service != NULL);
if (deadlineTimers.count(name) == 0)
{
deadlineTimers.insert(make_pair(name,
boost::shared_ptr<deadline_timer>(new deadline_timer(*rpc_io_service))));
}
deadlineTimers[name]->expires_from_now(posix_time::seconds(nSeconds));
deadlineTimers[name]->async_wait(boost::bind(RPCRunHandler, _1, func));
}
class JSONRequest
{
public:
Value id;
string strMethod;
Array params;
JSONRequest() { id = Value::null; }
void parse(const Value& valRequest);
};
void JSONRequest::parse(const Value& valRequest)
{
// Parse request
if (valRequest.type() != obj_type)
throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
const Object& request = valRequest.get_obj();
// Parse id now so errors from here on will have the id
id = find_value(request, "id");
// Parse method
Value valMethod = find_value(request, "method");
if (valMethod.type() == null_type)
throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
if (valMethod.type() != str_type)
throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
strMethod = valMethod.get_str();
if (strMethod != "getwork" && strMethod != "getblocktemplate")
LogPrint("rpc", "ThreadRPCServer method=%s\n", strMethod.c_str());
// Parse params
Value valParams = find_value(request, "params");
if (valParams.type() == array_type)
params = valParams.get_array();
else if (valParams.type() == null_type)
params = Array();
else
throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
}
static Object JSONRPCExecOne(const Value& req)
{
Object rpc_result;
JSONRequest jreq;
try {
jreq.parse(req);
Value result = tableRPC.execute(jreq.strMethod, jreq.params);
rpc_result = JSONRPCReplyObj(result, Value::null, jreq.id);
}
catch (Object& objError)
{
rpc_result = JSONRPCReplyObj(Value::null, objError, jreq.id);
}
catch (std::exception& e)
{
rpc_result = JSONRPCReplyObj(Value::null,
JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
}
return rpc_result;
}
static string JSONRPCExecBatch(const Array& vReq)
{
Array ret;
for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
return write_string(Value(ret), false) + "\n";
}
void ServiceConnection(AcceptedConnection *conn)
{
bool fRun = true;
while (fRun)
{
int nProto = 0;
map<string, string> mapHeaders;
string strRequest, strMethod, strURI;
// Read HTTP request line
if (!ReadHTTPRequestLine(conn->stream(), nProto, strMethod, strURI))
break;
// Read HTTP message headers and body
ReadHTTPMessage(conn->stream(), mapHeaders, strRequest, nProto);
if (strURI != "/") {
conn->stream() << HTTPReply(HTTP_NOT_FOUND, "", false) << std::flush;
break;
}
// Check authorization