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// Copyright (c) 2010 Satoshi Nakamoto
// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
#include "headers.h"
#undef printf
#include <boost/asio.hpp>
#include "json/json_spirit_reader_template.h"
#include "json/json_spirit_writer_template.h"
#include "json/json_spirit_utils.h"
#define printf OutputDebugStringF
// MinGW 3.4.5 gets "fatal error: had to relocate PCH" if the json headers are
// precompiled in headers.h. The problem might be when the pch file goes over
// a certain size around 145MB. If we need access to json_spirit outside this
// file, we could use the compiled json_spirit option.
using boost::asio::ip::tcp;
using namespace json_spirit;
void ThreadRPCServer2(void* parg);
///
/// Note: I'm not finished designing this interface, it's still subject to change.
///
Value stop(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"stop (no parameters)\n"
"Stop bitcoin server.");
// Shutdown will take long enough that the response should get back
CreateThread(Shutdown, NULL);
return "bitcoin server stopping";
}
Value getblockcount(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getblockcount (no parameters)\n"
"Returns the number of blocks in the longest block chain.");
return nBestHeight + 1;
}
Value getblocknumber(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getblocknumber (no parameters)\n"
"Returns the block number of the latest block in the longest block chain.");
return nBestHeight;
}
Value getconnectioncount(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getconnectioncount (no parameters)\n"
"Returns the number of connections to other nodes.");
return (int)vNodes.size();
}
double GetDifficulty()
{
// Floating point number that is a multiple of the minimum difficulty,
// minimum difficulty = 1.0.
if (pindexBest == NULL)
return 1.0;
int nShift = 256 - 32 - 31; // to fit in a uint
double dMinimum = (CBigNum().SetCompact(bnProofOfWorkLimit.GetCompact()) >> nShift).getuint();
double dCurrently = (CBigNum().SetCompact(pindexBest->nBits) >> nShift).getuint();
return dMinimum / dCurrently;
}
Value getdifficulty(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getdifficulty (no parameters)\n"
"Returns the proof-of-work difficulty as a multiple of the minimum difficulty.");
return GetDifficulty();
}
Value getbalance(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getbalance (no parameters)\n"
"Returns the server's available balance.");
return ((double)GetBalance() / (double)COIN);
}
Value getgenerate(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getgenerate (no parameters)\n"
"Returns true or false.");
return (bool)fGenerateBitcoins;
}
Value setgenerate(const Array& params)
{
if (params.size() < 1 || params.size() > 2)
throw runtime_error(
"setgenerate <generate> [genproclimit]\n"
"<generate> is true or false to turn generation on or off.\n"
"Generation is limited to [genproclimit] processors, -1 is unlimited.");
bool fGenerate = true;
if (params.size() > 0)
fGenerate = params[0].get_bool();
if (params.size() > 1)
{
int nGenProcLimit = params[1].get_int();
fLimitProcessors = (nGenProcLimit != -1);
CWalletDB().WriteSetting("fLimitProcessors", fLimitProcessors);
if (nGenProcLimit != -1)
CWalletDB().WriteSetting("nLimitProcessors", nLimitProcessors = nGenProcLimit);
}
GenerateBitcoins(fGenerate);
return Value::null;
}
Value getinfo(const Array& params)
{
if (params.size() != 0)
throw runtime_error(
"getinfo (no parameters)");
Object obj;
obj.push_back(Pair("balance", (double)GetBalance() / (double)COIN));
obj.push_back(Pair("blocks", (int)nBestHeight + 1));
obj.push_back(Pair("connections", (int)vNodes.size()));
obj.push_back(Pair("proxy", (fUseProxy ? addrProxy.ToStringIPPort() : string())));
obj.push_back(Pair("generate", (bool)fGenerateBitcoins));
obj.push_back(Pair("genproclimit", (int)(fLimitProcessors ? nLimitProcessors : -1)));
obj.push_back(Pair("difficulty", (double)GetDifficulty()));
return obj;
}
Value getnewaddress(const Array& params)
{
if (params.size() > 1)
throw runtime_error(
"getnewaddress [label]\n"
"Returns a new bitcoin address for receiving payments. "
"If [label] is specified (recommended), it is added to the address book "
"so payments received with the address will be labeled.");
// Parse the label first so we don't generate a key if there's an error
string strLabel;
if (params.size() > 0)
strLabel = params[0].get_str();
// Generate a new key that is added to wallet
string strAddress = PubKeyToAddress(GenerateNewKey());
SetAddressBookName(strAddress, strLabel);
return strAddress;
}
Value sendtoaddress(const Array& params)
{
if (params.size() < 2 || params.size() > 4)
throw runtime_error(
"sendtoaddress <bitcoinaddress> <amount> [comment] [comment-to]\n"
"<amount> is a real and is rounded to the nearest 0.01");
string strAddress = params[0].get_str();
// Amount
if (params[1].get_real() <= 0.0 || params[1].get_real() > 21000000.0)
throw runtime_error("Invalid amount");
int64 nAmount = roundint64(params[1].get_real() * 100.00) * CENT;
// Wallet comments
CWalletTx wtx;
if (params.size() > 2 && params[2].type() != null_type && !params[2].get_str().empty())
wtx.mapValue["message"] = params[2].get_str();
if (params.size() > 3 && params[3].type() != null_type && !params[3].get_str().empty())
wtx.mapValue["to"] = params[3].get_str();
string strError = SendMoneyToBitcoinAddress(strAddress, nAmount, wtx);
if (strError != "")
throw runtime_error(strError);
return "sent";
}
Value listtransactions(const Array& params)
{
if (params.size() > 2)
throw runtime_error(
"listtransactions [count=10] [includegenerated=false]\n"
"Returns up to [count] most recent transactions.");
int64 nCount = 10;
if (params.size() > 0)
nCount = params[0].get_int64();
bool fGenerated = false;
if (params.size() > 1)
fGenerated = params[1].get_bool();
Array ret;
//// not finished
ret.push_back("not implemented yet");
return ret;
}
Value getamountreceived(const Array& params)
{
if (params.size() < 1 || params.size() > 2)
throw runtime_error(
"getamountreceived <bitcoinaddress> [minconf=1]\n"
"Returns the total amount received by <bitcoinaddress> in transactions with at least [minconf] confirmations.");
// Bitcoin address
string strAddress = params[0].get_str();
CScript scriptPubKey;
if (!scriptPubKey.SetBitcoinAddress(strAddress))
throw runtime_error("Invalid bitcoin address");
// Minimum confirmations
int nMinDepth = 1;
if (params.size() > 1)
nMinDepth = params[1].get_int();
// Tally
int64 nAmount = 0;
CRITICAL_BLOCK(cs_mapWallet)
{
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
{
const CWalletTx& wtx = (*it).second;
if (wtx.IsCoinBase() || !wtx.IsFinal())
continue;
foreach(const CTxOut& txout, wtx.vout)
if (txout.scriptPubKey == scriptPubKey)
if (wtx.GetDepthInMainChain() >= nMinDepth)
nAmount += txout.nValue;
}
}
return (double)nAmount / (double)COIN;
}
struct tallyitem
{
int64 nAmount;
int nConf;
tallyitem()
{
nAmount = 0;
nConf = INT_MAX;
}
};
Value getallreceived(const Array& params)
{
if (params.size() > 1)
throw runtime_error(
"getallreceived [minconf=1]\n"
"[minconf] is the minimum number of confirmations before payments are included.\n"
"Returns an array of objects containing:\n"
" \"address\" : receiving address\n"
" \"amount\" : total amount received by the address\n"
" \"confirmations\" : number of confirmations of the most recent transaction included\n"
" \"label\" : the label of the receiving address");
// Minimum confirmations
int nMinDepth = 1;
if (params.size() > 0)
nMinDepth = params[0].get_int();
// Tally
map<uint160, tallyitem> mapTally;
CRITICAL_BLOCK(cs_mapWallet)
{
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
{
const CWalletTx& wtx = (*it).second;
if (wtx.IsCoinBase() || !wtx.IsFinal())
continue;
int nDepth = wtx.GetDepthInMainChain();
if (nDepth < nMinDepth)
continue;
// Filter out debits and payments to self, which may have change return
// we don't want to count.
int64 nCredit = wtx.GetCredit(true);
int64 nDebit = wtx.GetDebit();
int64 nNet = nCredit - nDebit;
if (nNet <= 0)
continue;
foreach(const CTxOut& txout, wtx.vout)
{
uint160 hash160 = txout.scriptPubKey.GetBitcoinAddressHash160();
if (hash160 == 0 || !mapPubKeys.count(hash160))
continue;
tallyitem& item = mapTally[hash160];
item.nAmount += txout.nValue;
item.nConf = min(item.nConf, nDepth);
}
}
}
// Reply
Array ret;
CRITICAL_BLOCK(cs_mapAddressBook)
{
for (map<uint160, tallyitem>::iterator it = mapTally.begin(); it != mapTally.end(); ++it)
{
string strAddress = Hash160ToAddress((*it).first);
string strLabel;
map<string, string>::iterator mi = mapAddressBook.find(strAddress);
if (mi != mapAddressBook.end())
strLabel = (*mi).second;
Object obj;
obj.push_back(Pair("address", strAddress));
obj.push_back(Pair("amount", (double)(*it).second.nAmount / (double)COIN));
obj.push_back(Pair("confirmations", (*it).second.nConf));
obj.push_back(Pair("label", strLabel));
ret.push_back(obj);
}
}
return ret;
}
//
// Call Table
//
typedef Value(*rpcfn_type)(const Array& params);
pair<string, rpcfn_type> pCallTable[] =
{
make_pair("stop", &stop),
make_pair("getblockcount", &getblockcount),
make_pair("getblocknumber", &getblocknumber),
make_pair("getconnectioncount", &getconnectioncount),
make_pair("getdifficulty", &getdifficulty),
make_pair("getbalance", &getbalance),
make_pair("getgenerate", &getgenerate),
make_pair("setgenerate", &setgenerate),
make_pair("getinfo", &getinfo),
make_pair("getnewaddress", &getnewaddress),
make_pair("sendtoaddress", &sendtoaddress),
make_pair("listtransactions", &listtransactions),
make_pair("getamountreceived", &getamountreceived),
make_pair("getallreceived", &getallreceived),
};
map<string, rpcfn_type> mapCallTable(pCallTable, pCallTable + sizeof(pCallTable)/sizeof(pCallTable[0]));
//
// 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)
{
return strprintf(
"POST / HTTP/1.1\r\n"
"User-Agent: json-rpc/1.0\r\n"
"Host: 127.0.0.1\r\n"
"Content-Type: application/json\r\n"
"Content-Length: %d\r\n"
"Accept: application/json\r\n"
"\r\n"
"%s",
strMsg.size(),
strMsg.c_str());
}
string HTTPReply(const string& strMsg, int nStatus=200)
{
string strStatus;
if (nStatus == 200) strStatus = "OK";
if (nStatus == 500) strStatus = "Internal Server Error";
return strprintf(
"HTTP/1.1 %d %s\r\n"
"Connection: close\r\n"
"Content-Length: %d\r\n"
"Content-Type: application/json\r\n"
"Date: Sat, 08 Jul 2006 12:04:08 GMT\r\n"
"Server: json-rpc/1.0\r\n"
"\r\n"
"%s",
nStatus,
strStatus.c_str(),
strMsg.size(),
strMsg.c_str());
}
int ReadHTTPHeader(tcp::iostream& stream)
{
int nLen = 0;
loop
{
string str;
std::getline(stream, str);
if (str.empty() || str == "\r")
break;
if (str.substr(0,15) == "Content-Length:")
nLen = atoi(str.substr(15));
}
return nLen;
}
inline string ReadHTTP(tcp::iostream& stream)
{
// Read header
int nLen = ReadHTTPHeader(stream);
if (nLen <= 0)
return string();
// Read message
vector<char> vch(nLen);
stream.read(&vch[0], nLen);
return string(vch.begin(), vch.end());
}
//
// JSON-RPC protocol
//
// http://json-rpc.org/wiki/specification
// 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";
}
string JSONRPCReply(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 write_string(Value(reply), false) + "\n";
}
void ThreadRPCServer(void* parg)
{
IMPLEMENT_RANDOMIZE_STACK(ThreadRPCServer(parg));
try
{
vnThreadsRunning[4]++;
ThreadRPCServer2(parg);
vnThreadsRunning[4]--;
}
catch (std::exception& e) {
vnThreadsRunning[4]--;
PrintException(&e, "ThreadRPCServer()");
} catch (...) {
vnThreadsRunning[4]--;
PrintException(NULL, "ThreadRPCServer()");
}
printf("ThreadRPCServer exiting\n");
}
void ThreadRPCServer2(void* parg)
{
printf("ThreadRPCServer started\n");
// Bind to loopback 127.0.0.1 so the socket can only be accessed locally
boost::asio::io_service io_service;
tcp::endpoint endpoint(boost::asio::ip::address_v4::loopback(), 8332);
tcp::acceptor acceptor(io_service, endpoint);
loop
{
// Accept connection
tcp::iostream stream;
tcp::endpoint peer;
vnThreadsRunning[4]--;
acceptor.accept(*stream.rdbuf(), peer);
vnThreadsRunning[4]++;
if (fShutdown)
return;
// Shouldn't be possible for anyone else to connect, but just in case
if (peer.address().to_string() != "127.0.0.1")
continue;
// Receive request
string strRequest = ReadHTTP(stream);
printf("ThreadRPCServer request=%s", strRequest.c_str());
// Handle multiple invocations per request
string::iterator begin = strRequest.begin();
while (skipspaces(begin), begin != strRequest.end())
{
string::iterator prev = begin;
Value id;
try
{
// Parse request
Value valRequest;
if (!read_range(begin, strRequest.end(), valRequest))
throw runtime_error("Parse error.");
const Object& request = valRequest.get_obj();
if (find_value(request, "method").type() != str_type ||
find_value(request, "params").type() != array_type)
throw runtime_error("Invalid request.");
string strMethod = find_value(request, "method").get_str();
const Array& params = find_value(request, "params").get_array();
id = find_value(request, "id");
// Execute
map<string, rpcfn_type>::iterator mi = mapCallTable.find(strMethod);
if (mi == mapCallTable.end())
throw runtime_error("Method not found.");
Value result = (*(*mi).second)(params);
// Send reply
string strReply = JSONRPCReply(result, Value::null, id);
stream << HTTPReply(strReply, 200) << std::flush;
}
catch (std::exception& e)
{
// Send error reply
string strReply = JSONRPCReply(Value::null, e.what(), id);
stream << HTTPReply(strReply, 500) << std::flush;
}
if (begin == prev)
break;
}
}
}
Value CallRPC(const string& strMethod, const Array& params)
{
// Connect to localhost
tcp::iostream stream("127.0.0.1", "8332");
if (stream.fail())
throw runtime_error("couldn't connect to server");
// Send request
string strRequest = JSONRPCRequest(strMethod, params, 1);
stream << HTTPPost(strRequest) << std::flush;
// Receive reply
string strReply = ReadHTTP(stream);
if (strReply.empty())
throw runtime_error("no response from server");
// Parse reply
Value valReply;
if (!read_string(strReply, valReply))
throw runtime_error("couldn't parse reply from server");
const Object& reply = valReply.get_obj();
if (reply.empty())
throw runtime_error("expected reply to have result, error and id properties");
const Value& result = find_value(reply, "result");
const Value& error = find_value(reply, "error");
const Value& id = find_value(reply, "id");
if (error.type() == str_type)
throw runtime_error(error.get_str());
else if (error.type() != null_type)
throw runtime_error(write_string(error, false));
return result;
}
template<typename T>
void ConvertTo(Value& value)
{
if (value.type() == str_type)
{
// reinterpret string as unquoted json value
Value value2;
if (!read_string(value.get_str(), value2))
throw runtime_error("type mismatch");
value = value2.get_value<T>();
}
else
{
value = value.get_value<T>();
}
}
int CommandLineRPC(int argc, char *argv[])
{
try
{
// Check that method exists
if (argc < 2)
throw runtime_error("too few parameters");
string strMethod = argv[1];
if (!mapCallTable.count(strMethod))
throw runtime_error(strprintf("unknown command: %s", strMethod.c_str()));
// Parameters default to strings
Array params;
for (int i = 2; i < argc; i++)
params.push_back(argv[i]);
int n = params.size();
//
// Special case other types
//
if (strMethod == "setgenerate" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "setgenerate" && n > 1) ConvertTo<boost::int64_t>(params[1]);
if (strMethod == "sendtoaddress" && n > 1) ConvertTo<double>(params[1]);
if (strMethod == "listtransactions" && n > 0) ConvertTo<boost::int64_t>(params[0]);
if (strMethod == "listtransactions" && n > 1) ConvertTo<bool>(params[1]);
if (strMethod == "getamountreceived" && n > 1) ConvertTo<boost::int64_t>(params[1]);
if (strMethod == "getallreceived" && n > 0) ConvertTo<boost::int64_t>(params[0]);
// Execute
Value result = CallRPC(strMethod, params);
// Print result
string strResult = (result.type() == str_type ? result.get_str() : write_string(result, true));
if (result.type() != null_type)
{
if (fWindows && fGUI)
// Windows GUI apps can't print to command line,
// so settle for a message box yuck
MyMessageBox(strResult.c_str(), "Bitcoin", wxOK);
else
fprintf(stdout, "%s\n", strResult.c_str());
}
return 0;
}
catch (std::exception& e) {
if (fWindows && fGUI)
MyMessageBox(strprintf("error: %s\n", e.what()).c_str(), "Bitcoin", wxOK);
else
fprintf(stderr, "error: %s\n", e.what());
} catch (...) {
PrintException(NULL, "CommandLineRPC()");
}
return 1;
}
#ifdef TEST
int main(int argc, char *argv[])
{
#ifdef _MSC_VER
// Turn off microsoft heap dump noise
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
_CrtSetReportFile(_CRT_WARN, CreateFile("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
#endif
setbuf(stdin, NULL);
setbuf(stdout, NULL);
setbuf(stderr, NULL);
try
{
if (argc >= 2 && string(argv[1]) == "-server")
{
printf("server ready\n");
ThreadRPCServer(NULL);
}
else
{
return CommandLineRPC(argc, argv);
}
}
catch (std::exception& e) {
PrintException(&e, "main()");
} catch (...) {
PrintException(NULL, "main()");
}
return 0;
}
#endif