src/bitcoinrpc.cpp

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2012 The Bitcoin developers
   3 // Distributed under the MIT/X11 software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "init.h"
   7 #include "util.h"
   8 #include "sync.h"
   9 #include "ui_interface.h"
  10 #include "base58.h"
  11 #include "bitcoinrpc.h"
  12 #include "db.h"
  13
  14 #undef printf
  15 #include <boost/asio.hpp>
  16 #include <boost/asio/ip/v6_only.hpp>
  17 #include <boost/bind.hpp>
  18 #include <boost/filesystem.hpp>
  19 #include <boost/foreach.hpp>
  20 #include <boost/iostreams/concepts.hpp>
  21 #include <boost/iostreams/stream.hpp>
  22 #include <boost/algorithm/string.hpp>
  23 #include <boost/lexical_cast.hpp>
  24 #include <boost/asio/ssl.hpp>
  25 #include <boost/filesystem/fstream.hpp>
  26 #include <boost/shared_ptr.hpp>
  27 #include <list>
  28
  29 #define printf OutputDebugStringF
  30
  31 using namespace std;
  32 using namespace boost;
  33 using namespace boost::asio;
  34 using namespace json_spirit;
  35
  36 void ThreadRPCServer2(void* parg);
  37
  38 static std::string strRPCUserColonPass;
  39
  40 const Object emptyobj;
  41
  42 void ThreadRPCServer3(void* parg);
  43
  44 static inline unsigned short GetDefaultRPCPort()
  45 {
  46     return GetBoolArg("-testnet", false) ? 18344 : 8344;
  47 }
  48
  49 Object JSONRPCError(int code, const string& message)
  50 {
  51     Object error;
  52     error.push_back(Pair("code", code));
  53     error.push_back(Pair("message", message));
  54     return error;
  55 }
  56
  57 void RPCTypeCheck(const Array& params,
  58                   const list<Value_type>& typesExpected,
  59                   bool fAllowNull)
  60 {
  61     unsigned int i = 0;
  62     BOOST_FOREACH(Value_type t, typesExpected)
  63     {
  64         if (params.size() <= i)
  65             break;
  66
  67         const Value& v = params[i];
  68         if (!((v.type() == t) || (fAllowNull && (v.type() == null_type))))
  69         {
  70             string err = strprintf("Expected type %s, got %s",
  71                                    Value_type_name[t], Value_type_name[v.type()]);
  72             throw JSONRPCError(RPC_TYPE_ERROR, err);
  73         }
  74         i++;
  75     }
  76 }
  77
  78 void RPCTypeCheck(const Object& o,
  79                   const map<string, Value_type>& typesExpected,
  80                   bool fAllowNull)
  81 {
  82     BOOST_FOREACH(const PAIRTYPE(string, Value_type)& t, typesExpected)
  83     {
  84         const Value& v = find_value(o, t.first);
  85         if (!fAllowNull && v.type() == null_type)
  86             throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first.c_str()));
  87
  88         if (!((v.type() == t.second) || (fAllowNull && (v.type() == null_type))))
  89         {
  90             string err = strprintf("Expected type %s for %s, got %s",
  91                                    Value_type_name[t.second], t.first.c_str(), Value_type_name[v.type()]);
  92             throw JSONRPCError(RPC_TYPE_ERROR, err);
  93         }
  94     }
  95 }
  96
  97 int64 AmountFromValue(const Value& value)
  98 {
  99     double dAmount = value.get_real();
 100     if (dAmount <= 0.0 || dAmount > MAX_MONEY)
 101         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
 102     int64 nAmount = roundint64(dAmount * COIN);
 103     if (!MoneyRange(nAmount))
 104         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
 105     return nAmount;
 106 }
 107
 108 Value ValueFromAmount(int64 amount)
 109 {
 110     return (double)amount / (double)COIN;
 111 }
 112
 113 std::string HexBits(unsigned int nBits)
 114 {
 115     union {
 116         int32_t nBits;
 117         char cBits[4];
 118     } uBits;
 119     uBits.nBits = htonl((int32_t)nBits);
 120     return HexStr(BEGIN(uBits.cBits), END(uBits.cBits));
 121 }
 122
 123
 124 //
 125 // Utilities: convert hex-encoded Values
 126 // (throws error if not hex).
 127 //
 128 uint256 ParseHashV(const Value& v, string strName)
 129 {
 130     string strHex;
 131     if (v.type() == str_type)
 132         strHex = v.get_str();
 133     if (!IsHex(strHex)) // Note: IsHex("") is false
 134         throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
 135     uint256 result;
 136     result.SetHex(strHex);
 137     return result;
 138 }
 139
 140 uint256 ParseHashO(const Object& o, string strKey)
 141 {
 142     return ParseHashV(find_value(o, strKey), strKey);
 143 }
 144
 145 vector<unsigned char> ParseHexV(const Value& v, string strName)
 146 {
 147     string strHex;
 148     if (v.type() == str_type)
 149         strHex = v.get_str();
 150     if (!IsHex(strHex))
 151         throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
 152     return ParseHex(strHex);
 153 }
 154
 155 vector<unsigned char> ParseHexO(const Object& o, string strKey)
 156 {
 157     return ParseHexV(find_value(o, strKey), strKey);
 158 }
 159
 160
 161 ///
 162 /// Note: This interface may still be subject to change.
 163 ///
 164
 165 string CRPCTable::help(string strCommand) const
 166 {
 167     string strRet;
 168     set<rpcfn_type> setDone;
 169     for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
 170     {
 171         const CRPCCommand *pcmd = mi->second;
 172         string strMethod = mi->first;
 173         // We already filter duplicates, but these deprecated screw up the sort order
 174         if (strMethod.find("label") != string::npos)
 175             continue;
 176         if (strCommand != "" && strMethod != strCommand)
 177             continue;
 178         try
 179         {
 180             Array params;
 181             rpcfn_type pfn = pcmd->actor;
 182             if (setDone.insert(pfn).second)
 183                 (*pfn)(params, true);
 184         }
 185         catch (std::exception& e)
 186         {
 187             // Help text is returned in an exception
 188             string strHelp = string(e.what());
 189             if (strCommand == "")
 190                 if (strHelp.find('\n') != string::npos)
 191                     strHelp = strHelp.substr(0, strHelp.find('\n'));
 192             strRet += strHelp + "\n";
 193         }
 194     }
 195     if (strRet == "")
 196         strRet = strprintf("help: unknown command: %s\n", strCommand.c_str());
 197     strRet = strRet.substr(0,strRet.size()-1);
 198     return strRet;
 199 }
 200
 201 Value help(const Array& params, bool fHelp)
 202 {
 203     if (fHelp || params.size() > 1)
 204         throw runtime_error(
 205             "help [command]\n"
 206             "List commands, or get help for a command.");
 207
 208     string strCommand;
 209     if (params.size() > 0)
 210         strCommand = params[0].get_str();
 211
 212     return tableRPC.help(strCommand);
 213 }
 214
 215
 216 Value stop(const Array& params, bool fHelp)
 217 {
 218     if (fHelp || params.size() > 1)
 219         throw runtime_error(
 220             "stop <detach>\n"
 221             "<detach> is true or false to detach the database or not for this stop only\n"
 222             "Stop NovaCoin server (and possibly override the detachdb config value).");
 223     // Shutdown will take long enough that the response should get back
 224     if (params.size() > 0)
 225         bitdb.SetDetach(params[0].get_bool());
 226     StartShutdown();
 227     return "NovaCoin server stopping";
 228 }
 229
 230
 231
 232 //
 233 // Call Table
 234 //
 235
 236
 237 static const CRPCCommand vRPCCommands[] =
 238 { //  name                      function                 safemd  unlocked
 239   //  ------------------------  -----------------------  ------  --------
 240     { "help",                   &help,                   true,   true },
 241     { "stop",                   &stop,                   true,   true },
 242     { "getbestblockhash",       &getbestblockhash,       true,   false },
 243     { "getblockcount",          &getblockcount,          true,   false },
 244     { "getconnectioncount",     &getconnectioncount,     true,   false },
 245     { "getpeerinfo",            &getpeerinfo,            true,   false },
 246     { "getdifficulty",          &getdifficulty,          true,   false },
 247     { "getinfo",                &getinfo,                true,   false },
 248     { "getsubsidy",             &getsubsidy,             true,   false },
 249     { "getmininginfo",          &getmininginfo,          true,   false },
 250     { "getnewaddress",          &getnewaddress,          true,   false },
 251     { "getaccountaddress",      &getaccountaddress,      true,   false },
 252     { "setaccount",             &setaccount,             true,   false },
 253     { "getaccount",             &getaccount,             false,  false },
 254     { "getaddressesbyaccount",  &getaddressesbyaccount,  true,   false },
 255     { "sendtoaddress",          &sendtoaddress,          false,  false },
 256     { "getreceivedbyaddress",   &getreceivedbyaddress,   false,  false },
 257     { "getreceivedbyaccount",   &getreceivedbyaccount,   false,  false },
 258     { "listreceivedbyaddress",  &listreceivedbyaddress,  false,  false },
 259     { "listreceivedbyaccount",  &listreceivedbyaccount,  false,  false },
 260     { "backupwallet",           &backupwallet,           true,   false },
 261     { "keypoolrefill",          &keypoolrefill,          true,   false },
 262     { "walletpassphrase",       &walletpassphrase,       true,   false },
 263     { "walletpassphrasechange", &walletpassphrasechange, false,  false },
 264     { "walletlock",             &walletlock,             true,   false },
 265     { "encryptwallet",          &encryptwallet,          false,  false },
 266     { "validateaddress",        &validateaddress,        true,   false },
 267     { "getbalance",             &getbalance,             false,  false },
 268     { "move",                   &movecmd,                false,  false },
 269     { "sendfrom",               &sendfrom,               false,  false },
 270     { "sendmany",               &sendmany,               false,  false },
 271     { "addmultisigaddress",     &addmultisigaddress,     false,  false },
 272     { "addredeemscript",        &addredeemscript,        false,  false },
 273     { "getrawmempool",          &getrawmempool,          true,   false },
 274     { "getblock",               &getblock,               false,  false },
 275     { "getblockbynumber",       &getblockbynumber,       false,  false },
 276     { "getblockhash",           &getblockhash,           false,  false },
 277     { "gettransaction",         &gettransaction,         false,  false },
 278     { "listtransactions",       &listtransactions,       false,  false },
 279     { "listaddressgroupings",   &listaddressgroupings,   false,  false },
 280     { "signmessage",            &signmessage,            false,  false },
 281     { "verifymessage",          &verifymessage,          false,  false },
 282     { "getwork",                &getwork,                true,   false },
 283     { "getworkex",              &getworkex,              true,   false },
 284     { "listaccounts",           &listaccounts,           false,  false },
 285     { "settxfee",               &settxfee,               false,  false },
 286     { "getblocktemplate",       &getblocktemplate,       true,   false },
 287     { "submitblock",            &submitblock,            false,  false },
 288     { "listsinceblock",         &listsinceblock,         false,  false },
 289     { "dumpprivkey",            &dumpprivkey,            false,  false },
 290     { "dumpwallet",             &dumpwallet,             true,   false },
 291     { "importwallet",           &importwallet,           false,  false },
 292     { "importprivkey",          &importprivkey,          false,  false },
 293     { "importaddress",          &importaddress,          false,  true  },
 294     { "listunspent",            &listunspent,            false,  false },
 295     { "getrawtransaction",      &getrawtransaction,      false,  false },
 296     { "createrawtransaction",   &createrawtransaction,   false,  false },
 297     { "decoderawtransaction",   &decoderawtransaction,   false,  false },
 298     { "decodescript",           &decodescript,           false,  false },
 299     { "signrawtransaction",     &signrawtransaction,     false,  false },
 300     { "sendrawtransaction",     &sendrawtransaction,     false,  false },
 301     { "getcheckpoint",          &getcheckpoint,          true,   false },
 302     { "reservebalance",         &reservebalance,         false,  true},
 303     { "checkwallet",            &checkwallet,            false,  true},
 304     { "repairwallet",           &repairwallet,           false,  true},
 305     { "resendtx",               &resendtx,               false,  true},
 306     { "makekeypair",            &makekeypair,            false,  true},
 307     { "sendalert",              &sendalert,              false,  false},
 308 };
 309
 310 CRPCTable::CRPCTable()
 311 {
 312     unsigned int vcidx;
 313     for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++)
 314     {
 315         const CRPCCommand *pcmd;
 316
 317         pcmd = &vRPCCommands[vcidx];
 318         mapCommands[pcmd->name] = pcmd;
 319     }
 320 }
 321
 322 const CRPCCommand *CRPCTable::operator[](string name) const
 323 {
 324     map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
 325     if (it == mapCommands.end())
 326         return NULL;
 327     return (*it).second;
 328 }
 329
 330 //
 331 // HTTP protocol
 332 //
 333 // This ain't Apache.  We're just using HTTP header for the length field
 334 // and to be compatible with other JSON-RPC implementations.
 335 //
 336
 337 string HTTPPost(const string& strMsg, const map<string,string>& mapRequestHeaders)
 338 {
 339     ostringstream s;
 340     s << "POST / HTTP/1.1\r\n"
 341       << "User-Agent: novacoin-json-rpc/" << FormatFullVersion() << "\r\n"
 342       << "Host: 127.0.0.1\r\n"
 343       << "Content-Type: application/json\r\n"
 344       << "Content-Length: " << strMsg.size() << "\r\n"
 345       << "Connection: close\r\n"
 346       << "Accept: application/json\r\n";
 347     BOOST_FOREACH(const PAIRTYPE(string, string)& item, mapRequestHeaders)
 348         s << item.first << ": " << item.second << "\r\n";
 349     s << "\r\n" << strMsg;
 350
 351     return s.str();
 352 }
 353
 354 string rfc1123Time()
 355 {
 356     char buffer[64];
 357     time_t now;
 358     time(&now);
 359     struct tm* now_gmt = gmtime(&now);
 360     string locale(setlocale(LC_TIME, NULL));
 361     setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
 362     strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
 363     setlocale(LC_TIME, locale.c_str());
 364     return string(buffer);
 365 }
 366
 367 static string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
 368 {
 369     if (nStatus == HTTP_UNAUTHORIZED)
 370         return strprintf("HTTP/1.0 401 Authorization Required\r\n"
 371             "Date: %s\r\n"
 372             "Server: novacoin-json-rpc/%s\r\n"
 373             "WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n"
 374             "Content-Type: text/html\r\n"
 375             "Content-Length: 296\r\n"
 376             "\r\n"
 377             "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\r\n"
 378             "\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\r\n"
 379             "<HTML>\r\n"
 380             "<HEAD>\r\n"
 381             "<TITLE>Error</TITLE>\r\n"
 382             "<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=ISO-8859-1'>\r\n"
 383             "</HEAD>\r\n"
 384             "<BODY><H1>401 Unauthorized.</H1></BODY>\r\n"
 385             "</HTML>\r\n", rfc1123Time().c_str(), FormatFullVersion().c_str());
 386     const char *cStatus;
 387          if (nStatus == HTTP_OK) cStatus = "OK";
 388     else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request";
 389     else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden";
 390     else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found";
 391     else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error";
 392     else cStatus = "";
 393     return strprintf(
 394             "HTTP/1.1 %d %s\r\n"
 395             "Date: %s\r\n"
 396             "Connection: %s\r\n"
 397             "Content-Length: %"PRIszu"\r\n"
 398             "Content-Type: application/json\r\n"
 399             "Server: novacoin-json-rpc/%s\r\n"
 400             "\r\n"
 401             "%s",
 402         nStatus,
 403         cStatus,
 404         rfc1123Time().c_str(),
 405         keepalive ? "keep-alive" : "close",
 406         strMsg.size(),
 407         FormatFullVersion().c_str(),
 408         strMsg.c_str());
 409 }
 410
 411 int ReadHTTPStatus(std::basic_istream<char>& stream, int &proto)
 412 {
 413     string str;
 414     getline(stream, str);
 415     vector<string> vWords;
 416     boost::split(vWords, str, boost::is_any_of(" "));
 417     if (vWords.size() < 2)
 418         return HTTP_INTERNAL_SERVER_ERROR;
 419     proto = 0;
 420     const char *ver = strstr(str.c_str(), "HTTP/1.");
 421     if (ver != NULL)
 422         proto = atoi(ver+7);
 423     return atoi(vWords[1].c_str());
 424 }
 425
 426 int ReadHTTPHeader(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet)
 427 {
 428     int nLen = 0;
 429     while (true)
 430     {
 431         string str;
 432         std::getline(stream, str);
 433         if (str.empty() || str == "\r")
 434             break;
 435         string::size_type nColon = str.find(":");
 436         if (nColon != string::npos)
 437         {
 438             string strHeader = str.substr(0, nColon);
 439             boost::trim(strHeader);
 440             boost::to_lower(strHeader);
 441             string strValue = str.substr(nColon+1);
 442             boost::trim(strValue);
 443             mapHeadersRet[strHeader] = strValue;
 444             if (strHeader == "content-length")
 445                 nLen = atoi(strValue.c_str());
 446         }
 447     }
 448     return nLen;
 449 }
 450
 451 int ReadHTTP(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet, string& strMessageRet)
 452 {
 453     mapHeadersRet.clear();
 454     strMessageRet = "";
 455
 456     // Read status
 457     int nProto = 0;
 458     int nStatus = ReadHTTPStatus(stream, nProto);
 459
 460     // Read header
 461     int nLen = ReadHTTPHeader(stream, mapHeadersRet);
 462     if (nLen < 0 || nLen > (int)MAX_SIZE)
 463         return HTTP_INTERNAL_SERVER_ERROR;
 464
 465     // Read message
 466     if (nLen > 0)
 467     {
 468         vector<char> vch(nLen);
 469         stream.read(&vch[0], nLen);
 470         strMessageRet = string(vch.begin(), vch.end());
 471     }
 472
 473     string sConHdr = mapHeadersRet["connection"];
 474
 475     if ((sConHdr != "close") && (sConHdr != "keep-alive"))
 476     {
 477         if (nProto >= 1)
 478             mapHeadersRet["connection"] = "keep-alive";
 479         else
 480             mapHeadersRet["connection"] = "close";
 481     }
 482
 483     return nStatus;
 484 }
 485
 486 bool HTTPAuthorized(map<string, string>& mapHeaders)
 487 {
 488     string strAuth = mapHeaders["authorization"];
 489     if (strAuth.substr(0,6) != "Basic ")
 490         return false;
 491     string strUserPass64 = strAuth.substr(6); boost::trim(strUserPass64);
 492     string strUserPass = DecodeBase64(strUserPass64);
 493     return TimingResistantEqual(strUserPass, strRPCUserColonPass);
 494 }
 495
 496 //
 497 // JSON-RPC protocol.  Bitcoin speaks version 1.0 for maximum compatibility,
 498 // but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
 499 // unspecified (HTTP errors and contents of 'error').
 500 //
 501 // 1.0 spec: http://json-rpc.org/wiki/specification
 502 // 1.2 spec: http://groups.google.com/group/json-rpc/web/json-rpc-over-http
 503 // http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx
 504 //
 505
 506 string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id)
 507 {
 508     Object request;
 509     request.push_back(Pair("method", strMethod));
 510     request.push_back(Pair("params", params));
 511     request.push_back(Pair("id", id));
 512     return write_string(Value(request), false) + "\n";
 513 }
 514
 515 Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id)
 516 {
 517     Object reply;
 518     if (error.type() != null_type)
 519         reply.push_back(Pair("result", Value::null));
 520     else
 521         reply.push_back(Pair("result", result));
 522     reply.push_back(Pair("error", error));
 523     reply.push_back(Pair("id", id));
 524     return reply;
 525 }
 526
 527 string JSONRPCReply(const Value& result, const Value& error, const Value& id)
 528 {
 529     Object reply = JSONRPCReplyObj(result, error, id);
 530     return write_string(Value(reply), false) + "\n";
 531 }
 532
 533 void ErrorReply(std::ostream& stream, const Object& objError, const Value& id)
 534 {
 535     // Send error reply from json-rpc error object
 536     int nStatus = HTTP_INTERNAL_SERVER_ERROR;
 537     int code = find_value(objError, "code").get_int();
 538     if (code == RPC_INVALID_REQUEST) nStatus = HTTP_BAD_REQUEST;
 539     else if (code == RPC_METHOD_NOT_FOUND) nStatus = HTTP_NOT_FOUND;
 540     string strReply = JSONRPCReply(Value::null, objError, id);
 541     stream << HTTPReply(nStatus, strReply, false) << std::flush;
 542 }
 543
 544 bool ClientAllowed(const boost::asio::ip::address& address)
 545 {
 546     // Make sure that IPv4-compatible and IPv4-mapped IPv6 addresses are treated as IPv4 addresses
 547     if (address.is_v6()
 548      && (address.to_v6().is_v4_compatible()
 549       || address.to_v6().is_v4_mapped()))
 550         return ClientAllowed(address.to_v6().to_v4());
 551
 552     if (address == asio::ip::address_v4::loopback()
 553      || address == asio::ip::address_v6::loopback()
 554      || (address.is_v4()
 555          // Check whether IPv4 addresses match 127.0.0.0/8 (loopback subnet)
 556       && (address.to_v4().to_ulong() & 0xff000000) == 0x7f000000))
 557         return true;
 558
 559     const string strAddress = address.to_string();
 560     const vector<string>& vAllow = mapMultiArgs["-rpcallowip"];
 561     BOOST_FOREACH(string strAllow, vAllow)
 562         if (WildcardMatch(strAddress, strAllow))
 563             return true;
 564     return false;
 565 }
 566
 567 //
 568 // IOStream device that speaks SSL but can also speak non-SSL
 569 //
 570 template <typename Protocol>
 571 class SSLIOStreamDevice : public iostreams::device<iostreams::bidirectional> {
 572 public:
 573     SSLIOStreamDevice(asio::ssl::stream<typename Protocol::socket> &streamIn, bool fUseSSLIn) : stream(streamIn)
 574     {
 575         fUseSSL = fUseSSLIn;
 576         fNeedHandshake = fUseSSLIn;
 577     }
 578
 579     void handshake(ssl::stream_base::handshake_type role)
 580     {
 581         if (!fNeedHandshake) return;
 582         fNeedHandshake = false;
 583         stream.handshake(role);
 584     }
 585     std::streamsize read(char* s, std::streamsize n)
 586     {
 587         handshake(ssl::stream_base::server); // HTTPS servers read first
 588         if (fUseSSL) return stream.read_some(asio::buffer(s, n));
 589         return stream.next_layer().read_some(asio::buffer(s, n));
 590     }
 591     std::streamsize write(const char* s, std::streamsize n)
 592     {
 593         handshake(ssl::stream_base::client); // HTTPS clients write first
 594         if (fUseSSL) return asio::write(stream, asio::buffer(s, n));
 595         return asio::write(stream.next_layer(), asio::buffer(s, n));
 596     }
 597     bool connect(const std::string& server, const std::string& port)
 598     {
 599         ip::tcp::resolver resolver(stream.get_io_service());
 600         ip::tcp::resolver::query query(server.c_str(), port.c_str());
 601         ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
 602         ip::tcp::resolver::iterator end;
 603         boost::system::error_code error = asio::error::host_not_found;
 604         while (error && endpoint_iterator != end)
 605         {
 606             stream.lowest_layer().close();
 607             stream.lowest_layer().connect(*endpoint_iterator++, error);
 608         }
 609         if (error)
 610             return false;
 611         return true;
 612     }
 613
 614 private:
 615     bool fNeedHandshake;
 616     bool fUseSSL;
 617     asio::ssl::stream<typename Protocol::socket>& stream;
 618 };
 619
 620 class AcceptedConnection
 621 {
 622 public:
 623     virtual ~AcceptedConnection() {}
 624
 625     virtual std::iostream& stream() = 0;
 626     virtual std::string peer_address_to_string() const = 0;
 627     virtual void close() = 0;
 628 };
 629
 630 template <typename Protocol>
 631 class AcceptedConnectionImpl : public AcceptedConnection
 632 {
 633 public:
 634     AcceptedConnectionImpl(
 635             asio::io_service& io_service,
 636             ssl::context &context,
 637             bool fUseSSL) :
 638         sslStream(io_service, context),
 639         _d(sslStream, fUseSSL),
 640         _stream(_d)
 641     {
 642     }
 643
 644     virtual std::iostream& stream()
 645     {
 646         return _stream;
 647     }
 648
 649     virtual std::string peer_address_to_string() const
 650     {
 651         return peer.address().to_string();
 652     }
 653
 654     virtual void close()
 655     {
 656         _stream.close();
 657     }
 658
 659     typename Protocol::endpoint peer;
 660     asio::ssl::stream<typename Protocol::socket> sslStream;
 661
 662 private:
 663     SSLIOStreamDevice<Protocol> _d;
 664     iostreams::stream< SSLIOStreamDevice<Protocol> > _stream;
 665 };
 666
 667 void ThreadRPCServer(void* parg)
 668 {
 669     // Make this thread recognisable as the RPC listener
 670     RenameThread("novacoin-rpclist");
 671
 672     try
 673     {
 674         vnThreadsRunning[THREAD_RPCLISTENER]++;
 675         ThreadRPCServer2(parg);
 676         vnThreadsRunning[THREAD_RPCLISTENER]--;
 677     }
 678     catch (std::exception& e) {
 679         vnThreadsRunning[THREAD_RPCLISTENER]--;
 680         PrintException(&e, "ThreadRPCServer()");
 681     } catch (...) {
 682         vnThreadsRunning[THREAD_RPCLISTENER]--;
 683         PrintException(NULL, "ThreadRPCServer()");
 684     }
 685     printf("ThreadRPCServer exited\n");
 686 }
 687
 688 // Forward declaration required for RPCListen
 689 template <typename Protocol, typename SocketAcceptorService>
 690 static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 691                              ssl::context& context,
 692                              bool fUseSSL,
 693                              AcceptedConnection* conn,
 694                              const boost::system::error_code& error);
 695
 696 /**
 697  * Sets up I/O resources to accept and handle a new connection.
 698  */
 699 template <typename Protocol, typename SocketAcceptorService>
 700 static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 701                    ssl::context& context,
 702                    const bool fUseSSL)
 703 {
 704     // Accept connection
 705     AcceptedConnectionImpl<Protocol>* conn = new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL);
 706
 707     acceptor->async_accept(
 708             conn->sslStream.lowest_layer(),
 709             conn->peer,
 710             boost::bind(&RPCAcceptHandler<Protocol, SocketAcceptorService>,
 711                 acceptor,
 712                 boost::ref(context),
 713                 fUseSSL,
 714                 conn,
 715                 boost::asio::placeholders::error));
 716 }
 717
 718 /**
 719  * Accept and handle incoming connection.
 720  */
 721 template <typename Protocol, typename SocketAcceptorService>
 722 static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 723                              ssl::context& context,
 724                              const bool fUseSSL,
 725                              AcceptedConnection* conn,
 726                              const boost::system::error_code& error)
 727 {
 728     vnThreadsRunning[THREAD_RPCLISTENER]++;
 729
 730     // Immediately start accepting new connections, except when we're cancelled or our socket is closed.
 731     if (error != asio::error::operation_aborted
 732      && acceptor->is_open())
 733         RPCListen(acceptor, context, fUseSSL);
 734
 735     AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(conn);
 736
 737     // TODO: Actually handle errors
 738     if (error)
 739     {
 740         delete conn;
 741     }
 742
 743     // Restrict callers by IP.  It is important to
 744     // do this before starting client thread, to filter out
 745     // certain DoS and misbehaving clients.
 746     else if (tcp_conn
 747           && !ClientAllowed(tcp_conn->peer.address()))
 748     {
 749         // Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake.
 750         if (!fUseSSL)
 751             conn->stream() << HTTPReply(HTTP_FORBIDDEN, "", false) << std::flush;
 752         delete conn;
 753     }
 754
 755     // start HTTP client thread
 756     else if (!NewThread(ThreadRPCServer3, conn)) {
 757         printf("Failed to create RPC server client thread\n");
 758         delete conn;
 759     }
 760
 761     vnThreadsRunning[THREAD_RPCLISTENER]--;
 762 }
 763
 764 void ThreadRPCServer2(void* parg)
 765 {
 766     printf("ThreadRPCServer started\n");
 767
 768     strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
 769     if (mapArgs["-rpcpassword"] == "")
 770     {
 771         unsigned char rand_pwd[32];
 772         RAND_bytes(rand_pwd, 32);
 773         string strWhatAmI = "To use novacoind";
 774         if (mapArgs.count("-server"))
 775             strWhatAmI = strprintf(_("To use the %s option"), "\"-server\"");
 776         else if (mapArgs.count("-daemon"))
 777             strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\"");
 778         uiInterface.ThreadSafeMessageBox(strprintf(
 779             _("%s, you must set a rpcpassword in the configuration file:\n %s\n"
 780               "It is recommended you use the following random password:\n"
 781               "rpcuser=bitcoinrpc\n"
 782               "rpcpassword=%s\n"
 783               "(you do not need to remember this password)\n"
 784               "If the file does not exist, create it with owner-readable-only file permissions.\n"),
 785                 strWhatAmI.c_str(),
 786                 GetConfigFile().string().c_str(),
 787                 EncodeBase58(&rand_pwd[0],&rand_pwd[0]+32).c_str()),
 788             _("Error"), CClientUIInterface::OK | CClientUIInterface::MODAL);
 789         StartShutdown();
 790         return;
 791     }
 792
 793     const bool fUseSSL = GetBoolArg("-rpcssl");
 794
 795     asio::io_service io_service;
 796
 797     ssl::context context(io_service, ssl::context::sslv23);
 798     if (fUseSSL)
 799     {
 800         context.set_options(ssl::context::no_sslv2);
 801
 802         filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert"));
 803         if (!pathCertFile.is_complete()) pathCertFile = filesystem::path(GetDataDir()) / pathCertFile;
 804         if (filesystem::exists(pathCertFile)) context.use_certificate_chain_file(pathCertFile.string());
 805         else printf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string().c_str());
 806
 807         filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem"));
 808         if (!pathPKFile.is_complete()) pathPKFile = filesystem::path(GetDataDir()) / pathPKFile;
 809         if (filesystem::exists(pathPKFile)) context.use_private_key_file(pathPKFile.string(), ssl::context::pem);
 810         else printf("ThreadRPCServer ERROR: missing server private key file %s\n", pathPKFile.string().c_str());
 811
 812         string strCiphers = GetArg("-rpcsslciphers", "TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH");
 813         SSL_CTX_set_cipher_list(context.impl(), strCiphers.c_str());
 814     }
 815
 816     // Try a dual IPv6/IPv4 socket, falling back to separate IPv4 and IPv6 sockets
 817     const bool loopback = !mapArgs.count("-rpcallowip");
 818     asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any();
 819     ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", GetDefaultRPCPort()));
 820     boost::system::error_code v6_only_error;
 821     boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(io_service));
 822
 823     boost::signals2::signal<void ()> StopRequests;
 824
 825     bool fListening = false;
 826     std::string strerr;
 827     try
 828     {
 829         acceptor->open(endpoint.protocol());
 830         acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
 831
 832         // Try making the socket dual IPv6/IPv4 (if listening on the "any" address)
 833         acceptor->set_option(boost::asio::ip::v6_only(loopback), v6_only_error);
 834
 835         acceptor->bind(endpoint);
 836         acceptor->listen(socket_base::max_connections);
 837
 838         RPCListen(acceptor, context, fUseSSL);
 839         // Cancel outstanding listen-requests for this acceptor when shutting down
 840         StopRequests.connect(signals2::slot<void ()>(
 841                     static_cast<void (ip::tcp::acceptor::*)()>(&ip::tcp::acceptor::close), acceptor.get())
 842                 .track(acceptor));
 843
 844         fListening = true;
 845     }
 846     catch(boost::system::system_error &e)
 847     {
 848         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());
 849     }
 850
 851     try {
 852         // If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately
 853         if (!fListening || loopback || v6_only_error)
 854         {
 855             bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any();
 856             endpoint.address(bindAddress);
 857
 858             acceptor.reset(new ip::tcp::acceptor(io_service));
 859             acceptor->open(endpoint.protocol());
 860             acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
 861             acceptor->bind(endpoint);
 862             acceptor->listen(socket_base::max_connections);
 863
 864             RPCListen(acceptor, context, fUseSSL);
 865             // Cancel outstanding listen-requests for this acceptor when shutting down
 866             StopRequests.connect(signals2::slot<void ()>(
 867                         static_cast<void (ip::tcp::acceptor::*)()>(&ip::tcp::acceptor::close), acceptor.get())
 868                     .track(acceptor));
 869
 870             fListening = true;
 871         }
 872     }
 873     catch(boost::system::system_error &e)
 874     {
 875         strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv4: %s"), endpoint.port(), e.what());
 876     }
 877
 878     if (!fListening) {
 879         uiInterface.ThreadSafeMessageBox(strerr, _("Error"), CClientUIInterface::OK | CClientUIInterface::MODAL);
 880         StartShutdown();
 881         return;
 882     }
 883
 884     vnThreadsRunning[THREAD_RPCLISTENER]--;
 885     while (!fShutdown)
 886         io_service.run_one();
 887     vnThreadsRunning[THREAD_RPCLISTENER]++;
 888     StopRequests();
 889 }
 890
 891 class JSONRequest
 892 {
 893 public:
 894     Value id;
 895     string strMethod;
 896     Array params;
 897
 898     JSONRequest() { id = Value::null; }
 899     void parse(const Value& valRequest);
 900 };
 901
 902 void JSONRequest::parse(const Value& valRequest)
 903 {
 904     // Parse request
 905     if (valRequest.type() != obj_type)
 906         throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
 907     const Object& request = valRequest.get_obj();
 908
 909     // Parse id now so errors from here on will have the id
 910     id = find_value(request, "id");
 911
 912     // Parse method
 913     Value valMethod = find_value(request, "method");
 914     if (valMethod.type() == null_type)
 915         throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
 916     if (valMethod.type() != str_type)
 917         throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
 918     strMethod = valMethod.get_str();
 919     if (strMethod != "getwork" && strMethod != "getblocktemplate")
 920         printf("ThreadRPCServer method=%s\n", strMethod.c_str());
 921
 922     // Parse params
 923     Value valParams = find_value(request, "params");
 924     if (valParams.type() == array_type)
 925         params = valParams.get_array();
 926     else if (valParams.type() == null_type)
 927         params = Array();
 928     else
 929         throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
 930 }
 931
 932 static Object JSONRPCExecOne(const Value& req)
 933 {
 934     Object rpc_result;
 935
 936     JSONRequest jreq;
 937     try {
 938         jreq.parse(req);
 939
 940         Value result = tableRPC.execute(jreq.strMethod, jreq.params);
 941         rpc_result = JSONRPCReplyObj(result, Value::null, jreq.id);
 942     }
 943     catch (Object& objError)
 944     {
 945         rpc_result = JSONRPCReplyObj(Value::null, objError, jreq.id);
 946     }
 947     catch (std::exception& e)
 948     {
 949         rpc_result = JSONRPCReplyObj(Value::null,
 950                                      JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
 951     }
 952
 953     return rpc_result;
 954 }
 955
 956 static string JSONRPCExecBatch(const Array& vReq)
 957 {
 958     Array ret;
 959     for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
 960         ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
 961
 962     return write_string(Value(ret), false) + "\n";
 963 }
 964
 965 static CCriticalSection cs_THREAD_RPCHANDLER;
 966
 967 void ThreadRPCServer3(void* parg)
 968 {
 969     // Make this thread recognisable as the RPC handler
 970     RenameThread("novacoin-rpchand");
 971
 972     {
 973         LOCK(cs_THREAD_RPCHANDLER);
 974         vnThreadsRunning[THREAD_RPCHANDLER]++;
 975     }
 976     AcceptedConnection *conn = (AcceptedConnection *) parg;
 977
 978     bool fRun = true;
 979     while (true)
 980     {
 981         if (fShutdown || !fRun)
 982         {
 983             conn->close();
 984             delete conn;
 985             {
 986                 LOCK(cs_THREAD_RPCHANDLER);
 987                 --vnThreadsRunning[THREAD_RPCHANDLER];
 988             }
 989             return;
 990         }
 991         map<string, string> mapHeaders;
 992         string strRequest;
 993
 994         ReadHTTP(conn->stream(), mapHeaders, strRequest);
 995
 996         // Check authorization
 997         if (mapHeaders.count("authorization") == 0)
 998         {
 999             conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush;
1000             break;
1001         }
1002         if (!HTTPAuthorized(mapHeaders))
1003         {
1004             printf("ThreadRPCServer incorrect password attempt from %s\n", conn->peer_address_to_string().c_str());
1005             /* Deter brute-forcing short passwords.
1006                If this results in a DOS the user really
1007                shouldn't have their RPC port exposed.*/
1008             if (mapArgs["-rpcpassword"].size() < 20)
1009                 Sleep(250);
1010
1011             conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush;
1012             break;
1013         }
1014         if (mapHeaders["connection"] == "close")
1015             fRun = false;
1016
1017         JSONRequest jreq;
1018         try
1019         {
1020             // Parse request
1021             Value valRequest;
1022             if (!read_string(strRequest, valRequest))
1023                 throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
1024
1025             string strReply;
1026
1027             // singleton request
1028             if (valRequest.type() == obj_type) {
1029                 jreq.parse(valRequest);
1030
1031                 Value result = tableRPC.execute(jreq.strMethod, jreq.params);
1032
1033                 // Send reply
1034                 strReply = JSONRPCReply(result, Value::null, jreq.id);
1035
1036             // array of requests
1037             } else if (valRequest.type() == array_type)
1038                 strReply = JSONRPCExecBatch(valRequest.get_array());
1039             else
1040                 throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error");
1041
1042             conn->stream() << HTTPReply(HTTP_OK, strReply, fRun) << std::flush;
1043         }
1044         catch (Object& objError)
1045         {
1046             ErrorReply(conn->stream(), objError, jreq.id);
1047             break;
1048         }
1049         catch (std::exception& e)
1050         {
1051             ErrorReply(conn->stream(), JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
1052             break;
1053         }
1054     }
1055
1056     delete conn;
1057     {
1058         LOCK(cs_THREAD_RPCHANDLER);
1059         vnThreadsRunning[THREAD_RPCHANDLER]--;
1060     }
1061 }
1062
1063 json_spirit::Value CRPCTable::execute(const std::string &strMethod, const json_spirit::Array &params) const
1064 {
1065     // Find method
1066     const CRPCCommand *pcmd = tableRPC[strMethod];
1067     if (!pcmd)
1068         throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
1069
1070     // Observe safe mode
1071     string strWarning = GetWarnings("rpc");
1072     if (strWarning != "" && !GetBoolArg("-disablesafemode") &&
1073         !pcmd->okSafeMode)
1074         throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
1075
1076     try
1077     {
1078         // Execute
1079         Value result;
1080         {
1081             if (pcmd->unlocked)
1082                 result = pcmd->actor(params, false);
1083             else {
1084                 LOCK2(cs_main, pwalletMain->cs_wallet);
1085                 result = pcmd->actor(params, false);
1086             }
1087         }
1088         return result;
1089     }
1090     catch (std::exception& e)
1091     {
1092         throw JSONRPCError(RPC_MISC_ERROR, e.what());
1093     }
1094 }
1095
1096
1097 Object CallRPC(const string& strMethod, const Array& params)
1098 {
1099     if (mapArgs["-rpcuser"] == "" && mapArgs["-rpcpassword"] == "")
1100         throw runtime_error(strprintf(
1101             _("You must set rpcpassword=<password> in the configuration file:\n%s\n"
1102               "If the file does not exist, create it with owner-readable-only file permissions."),
1103                 GetConfigFile().string().c_str()));
1104
1105     // Connect to localhost
1106     bool fUseSSL = GetBoolArg("-rpcssl");
1107     asio::io_service io_service;
1108     ssl::context context(io_service, ssl::context::sslv23);
1109     context.set_options(ssl::context::no_sslv2);
1110     asio::ssl::stream<asio::ip::tcp::socket> sslStream(io_service, context);
1111     SSLIOStreamDevice<asio::ip::tcp> d(sslStream, fUseSSL);
1112     iostreams::stream< SSLIOStreamDevice<asio::ip::tcp> > stream(d);
1113     if (!d.connect(GetArg("-rpcconnect", "127.0.0.1"), GetArg("-rpcport", itostr(GetDefaultRPCPort()))))
1114         throw runtime_error("couldn't connect to server");
1115
1116     // HTTP basic authentication
1117     string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]);
1118     map<string, string> mapRequestHeaders;
1119     mapRequestHeaders["Authorization"] = string("Basic ") + strUserPass64;
1120
1121     // Send request
1122     string strRequest = JSONRPCRequest(strMethod, params, 1);
1123     string strPost = HTTPPost(strRequest, mapRequestHeaders);
1124     stream << strPost << std::flush;
1125
1126     // Receive reply
1127     map<string, string> mapHeaders;
1128     string strReply;
1129     int nStatus = ReadHTTP(stream, mapHeaders, strReply);
1130     if (nStatus == HTTP_UNAUTHORIZED)
1131         throw runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
1132     else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR)
1133         throw runtime_error(strprintf("server returned HTTP error %d", nStatus));
1134     else if (strReply.empty())
1135         throw runtime_error("no response from server");
1136
1137     // Parse reply
1138     Value valReply;
1139     if (!read_string(strReply, valReply))
1140         throw runtime_error("couldn't parse reply from server");
1141     const Object& reply = valReply.get_obj();
1142     if (reply.empty())
1143         throw runtime_error("expected reply to have result, error and id properties");
1144
1145     return reply;
1146 }
1147
1148
1149
1150
1151 template<typename T>
1152 void ConvertTo(Value& value, bool fAllowNull=false)
1153 {
1154     if (fAllowNull && value.type() == null_type)
1155         return;
1156     if (value.type() == str_type)
1157     {
1158         // reinterpret string as unquoted json value
1159         Value value2;
1160         string strJSON = value.get_str();
1161         if (!read_string(strJSON, value2))
1162             throw runtime_error(string("Error parsing JSON:")+strJSON);
1163         ConvertTo<T>(value2, fAllowNull);
1164         value = value2;
1165     }
1166     else
1167     {
1168         value = value.get_value<T>();
1169     }
1170 }
1171
1172 // Convert strings to command-specific RPC representation
1173 Array RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)
1174 {
1175     Array params;
1176     BOOST_FOREACH(const std::string &param, strParams)
1177         params.push_back(param);
1178
1179     int n = params.size();
1180
1181     //
1182     // Special case non-string parameter types
1183     //
1184     if (strMethod == "stop"                   && n > 0) ConvertTo<bool>(params[0]);
1185     if (strMethod == "sendtoaddress"          && n > 1) ConvertTo<double>(params[1]);
1186     if (strMethod == "settxfee"               && n > 0) ConvertTo<double>(params[0]);
1187     if (strMethod == "getreceivedbyaddress"   && n > 1) ConvertTo<boost::int64_t>(params[1]);
1188     if (strMethod == "getreceivedbyaccount"   && n > 1) ConvertTo<boost::int64_t>(params[1]);
1189     if (strMethod == "listreceivedbyaddress"  && n > 0) ConvertTo<boost::int64_t>(params[0]);
1190     if (strMethod == "listreceivedbyaddress"  && n > 1) ConvertTo<bool>(params[1]);
1191     if (strMethod == "listreceivedbyaccount"  && n > 0) ConvertTo<boost::int64_t>(params[0]);
1192     if (strMethod == "listreceivedbyaccount"  && n > 1) ConvertTo<bool>(params[1]);
1193     if (strMethod == "getbalance"             && n > 1) ConvertTo<boost::int64_t>(params[1]);
1194     if (strMethod == "getblock"               && n > 1) ConvertTo<bool>(params[1]);
1195     if (strMethod == "getblockbynumber"       && n > 0) ConvertTo<boost::int64_t>(params[0]);
1196     if (strMethod == "getblockbynumber"       && n > 1) ConvertTo<bool>(params[1]);
1197     if (strMethod == "getblockhash"           && n > 0) ConvertTo<boost::int64_t>(params[0]);
1198     if (strMethod == "move"                   && n > 2) ConvertTo<double>(params[2]);
1199     if (strMethod == "move"                   && n > 3) ConvertTo<boost::int64_t>(params[3]);
1200     if (strMethod == "sendfrom"               && n > 2) ConvertTo<double>(params[2]);
1201     if (strMethod == "sendfrom"               && n > 3) ConvertTo<boost::int64_t>(params[3]);
1202     if (strMethod == "listtransactions"       && n > 1) ConvertTo<boost::int64_t>(params[1]);
1203     if (strMethod == "listtransactions"       && n > 2) ConvertTo<boost::int64_t>(params[2]);
1204     if (strMethod == "listaccounts"           && n > 0) ConvertTo<boost::int64_t>(params[0]);
1205     if (strMethod == "walletpassphrase"       && n > 1) ConvertTo<boost::int64_t>(params[1]);
1206     if (strMethod == "walletpassphrase"       && n > 2) ConvertTo<bool>(params[2]);
1207     if (strMethod == "getblocktemplate"       && n > 0) ConvertTo<Object>(params[0]);
1208     if (strMethod == "listsinceblock"         && n > 1) ConvertTo<boost::int64_t>(params[1]);
1209
1210     if (strMethod == "sendalert"              && n > 2) ConvertTo<boost::int64_t>(params[2]);
1211     if (strMethod == "sendalert"              && n > 3) ConvertTo<boost::int64_t>(params[3]);
1212     if (strMethod == "sendalert"              && n > 4) ConvertTo<boost::int64_t>(params[4]);
1213     if (strMethod == "sendalert"              && n > 5) ConvertTo<boost::int64_t>(params[5]);
1214     if (strMethod == "sendalert"              && n > 6) ConvertTo<boost::int64_t>(params[6]);
1215
1216     if (strMethod == "sendmany"               && n > 1) ConvertTo<Object>(params[1]);
1217     if (strMethod == "sendmany"               && n > 2) ConvertTo<boost::int64_t>(params[2]);
1218     if (strMethod == "reservebalance"         && n > 0) ConvertTo<bool>(params[0]);
1219     if (strMethod == "reservebalance"         && n > 1) ConvertTo<double>(params[1]);
1220     if (strMethod == "addmultisigaddress"     && n > 0) ConvertTo<boost::int64_t>(params[0]);
1221     if (strMethod == "addmultisigaddress"     && n > 1) ConvertTo<Array>(params[1]);
1222     if (strMethod == "listunspent"            && n > 0) ConvertTo<boost::int64_t>(params[0]);
1223     if (strMethod == "listunspent"            && n > 1) ConvertTo<boost::int64_t>(params[1]);
1224     if (strMethod == "listunspent"            && n > 2) ConvertTo<Array>(params[2]);
1225     if (strMethod == "getrawtransaction"      && n > 1) ConvertTo<boost::int64_t>(params[1]);
1226     if (strMethod == "createrawtransaction"   && n > 0) ConvertTo<Array>(params[0]);
1227     if (strMethod == "createrawtransaction"   && n > 1) ConvertTo<Object>(params[1]);
1228     if (strMethod == "signrawtransaction"     && n > 1) ConvertTo<Array>(params[1], true);
1229     if (strMethod == "signrawtransaction"     && n > 2) ConvertTo<Array>(params[2], true);
1230     if (strMethod == "keypoolrefill"          && n > 0) ConvertTo<boost::int64_t>(params[0]);
1231     if (strMethod == "importaddress"          && n > 2) ConvertTo<bool>(params[2]);
1232
1233     return params;
1234 }
1235
1236 int CommandLineRPC(int argc, char *argv[])
1237 {
1238     string strPrint;
1239     int nRet = 0;
1240     try
1241     {
1242         // Skip switches
1243         while (argc > 1 && IsSwitchChar(argv[1][0]))
1244         {
1245             argc--;
1246             argv++;
1247         }
1248
1249         // Method
1250         if (argc < 2)
1251             throw runtime_error("too few parameters");
1252         string strMethod = argv[1];
1253
1254         // Parameters default to strings
1255         std::vector<std::string> strParams(&argv[2], &argv[argc]);
1256         Array params = RPCConvertValues(strMethod, strParams);
1257
1258         // Execute
1259         Object reply = CallRPC(strMethod, params);
1260
1261         // Parse reply
1262         const Value& result = find_value(reply, "result");
1263         const Value& error  = find_value(reply, "error");
1264
1265         if (error.type() != null_type)
1266         {
1267             // Error
1268             strPrint = "error: " + write_string(error, false);
1269             int code = find_value(error.get_obj(), "code").get_int();
1270             nRet = abs(code);
1271         }
1272         else
1273         {
1274             // Result
1275             if (result.type() == null_type)
1276                 strPrint = "";
1277             else if (result.type() == str_type)
1278                 strPrint = result.get_str();
1279             else
1280                 strPrint = write_string(result, true);
1281         }
1282     }
1283     catch (std::exception& e)
1284     {
1285         strPrint = string("error: ") + e.what();
1286         nRet = 87;
1287     }
1288     catch (...)
1289     {
1290         PrintException(NULL, "CommandLineRPC()");
1291     }
1292
1293     if (strPrint != "")
1294     {
1295         fprintf((nRet == 0 ? stdout : stderr), "%s\n", strPrint.c_str());
1296     }
1297     return nRet;
1298 }
1299
1300
1301
1302
1303 #ifdef TEST
1304 int main(int argc, char *argv[])
1305 {
1306 #ifdef _MSC_VER
1307     // Turn off Microsoft heap dump noise
1308     _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
1309     _CrtSetReportFile(_CRT_WARN, CreateFile("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
1310 #endif
1311     setbuf(stdin, NULL);
1312     setbuf(stdout, NULL);
1313     setbuf(stderr, NULL);
1314
1315     try
1316     {
1317         if (argc >= 2 && string(argv[1]) == "-server")
1318         {
1319             printf("server ready\n");
1320             ThreadRPCServer(NULL);
1321         }
1322         else
1323         {
1324             return CommandLineRPC(argc, argv);
1325         }
1326     }
1327     catch (std::exception& e) {
1328         PrintException(&e, "main()");
1329     } catch (...) {
1330         PrintException(NULL, "main()");
1331     }
1332     return 0;
1333 }
1334 #endif
1335
1336 const CRPCTable tableRPC;