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 <memory>
  16 #include <ixwebsocket/IXHttpServer.h>
  17 #include <ixwebsocket/IXHttpClient.h>
  18 #include <boost/asio.hpp>
  19 #include <boost/asio/ip/v6_only.hpp>
  20 #include <boost/bind.hpp>
  21 #include <boost/filesystem.hpp>
  22 #include <boost/foreach.hpp>
  23 #include <boost/iostreams/concepts.hpp>
  24 #include <boost/iostreams/stream.hpp>
  25 #include <boost/algorithm/string.hpp>
  26 #include <boost/lexical_cast.hpp>
  27 #include <boost/asio/ssl.hpp>
  28 #include <boost/filesystem/fstream.hpp>
  29 #include <boost/shared_ptr.hpp>
  30 #include <list>
  31
  32 #define printf OutputDebugStringF
  33
  34 using namespace std;
  35 using namespace boost;
  36 using namespace json_spirit;
  37
  38 std::unique_ptr<ix::HttpServer> g_server;
  39
  40 static std::string strRPCUserColonPass;
  41
  42 const Object emptyobj;
  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_t 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_t 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_t 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.empty() && 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.empty())
 190                 if (strHelp.find('\n') != string::npos)
 191                     strHelp = strHelp.substr(0, strHelp.find('\n'));
 192             strRet += strHelp + "\n";
 193         }
 194     }
 195     if (strRet.empty())
 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     { "getaddrmaninfo",             &getaddrmaninfo,              true,   false },
 246     { "getpeerinfo",                &getpeerinfo,                 true,   false },
 247     { "addnode",                    &addnode,                     true,   true  },
 248     { "getaddednodeinfo",           &getaddednodeinfo,            true,   true  },
 249     { "getdifficulty",              &getdifficulty,               true,   false },
 250     { "getinfo",                    &getinfo,                     true,   false },
 251     { "getsubsidy",                 &getsubsidy,                  true,   false },
 252     { "getmininginfo",              &getmininginfo,               true,   false },
 253     { "scaninput",                  &scaninput,                   true,   true },
 254     { "getnewaddress",              &getnewaddress,               true,   false },
 255     { "getnettotals",               &getnettotals,                true,   true  },
 256     { "ntptime",                    &ntptime,                     true,   true  },
 257     { "getaccountaddress",          &getaccountaddress,           true,   false },
 258     { "setaccount",                 &setaccount,                  true,   false },
 259     { "getaccount",                 &getaccount,                  false,  false },
 260     { "getaddressesbyaccount",      &getaddressesbyaccount,       true,   false },
 261     { "sendtoaddress",              &sendtoaddress,               false,  false },
 262     { "mergecoins",                 &mergecoins,                  false,  false },
 263     { "getreceivedbyaddress",       &getreceivedbyaddress,        false,  false },
 264     { "getreceivedbyaccount",       &getreceivedbyaccount,        false,  false },
 265     { "listreceivedbyaddress",      &listreceivedbyaddress,       false,  false },
 266     { "listreceivedbyaccount",      &listreceivedbyaccount,       false,  false },
 267     { "backupwallet",               &backupwallet,                true,   false },
 268     { "keypoolrefill",              &keypoolrefill,               true,   false },
 269     { "keypoolreset",               &keypoolreset,                true,   false },
 270     { "walletpassphrase",           &walletpassphrase,            true,   false },
 271     { "walletpassphrasechange",     &walletpassphrasechange,      false,  false },
 272     { "walletlock",                 &walletlock,                  true,   false },
 273     { "encryptwallet",              &encryptwallet,               false,  false },
 274     { "validateaddress",            &validateaddress,             true,   false },
 275     { "getbalance",                 &getbalance,                  false,  false },
 276     { "move",                       &movecmd,                     false,  false },
 277     { "sendfrom",                   &sendfrom,                    false,  false },
 278     { "sendmany",                   &sendmany,                    false,  false },
 279     { "addmultisigaddress",         &addmultisigaddress,          false,  false },
 280     { "addredeemscript",            &addredeemscript,             false,  false },
 281     { "getrawmempool",              &getrawmempool,               true,   false },
 282     { "getblock",                   &getblock,                    false,  false },
 283     { "getblockbynumber",           &getblockbynumber,            false,  false },
 284     { "dumpblock",                  &dumpblock,                   false,  false },
 285     { "dumpblockbynumber",          &dumpblockbynumber,           false,  false },
 286     { "getblockhash",               &getblockhash,                false,  false },
 287     { "gettransaction",             &gettransaction,              false,  false },
 288     { "listtransactions",           &listtransactions,            false,  false },
 289     { "listaddressgroupings",       &listaddressgroupings,        false,  false },
 290     { "signmessage",                &signmessage,                 false,  false },
 291     { "verifymessage",              &verifymessage,               false,  false },
 292     { "getwork",                    &getwork,                     true,   false },
 293     { "getworkex",                  &getworkex,                   true,   false },
 294     { "listaccounts",               &listaccounts,                false,  false },
 295     { "settxfee",                   &settxfee,                    false,  false },
 296     { "getblocktemplate",           &getblocktemplate,            true,   false },
 297     { "submitblock",                &submitblock,                 false,  false },
 298     { "listsinceblock",             &listsinceblock,              false,  false },
 299     { "dumpprivkey",                &dumpprivkey,                 false,  false },
 300     { "dumpwallet",                 &dumpwallet,                  true,   false },
 301     { "importwallet",               &importwallet,                false,  false },
 302     { "importprivkey",              &importprivkey,               false,  false },
 303     { "importaddress",              &importaddress,               false,  true  },
 304     { "removeaddress",              &removeaddress,               false,  true  },
 305     { "listunspent",                &listunspent,                 false,  false },
 306     { "getrawtransaction",          &getrawtransaction,           false,  false },
 307     { "createrawtransaction",       &createrawtransaction,        false,  false },
 308     { "decoderawtransaction",       &decoderawtransaction,        false,  false },
 309     { "createmultisig",             &createmultisig,              false,  false },
 310     { "decodescript",               &decodescript,                false,  false },
 311     { "signrawtransaction",         &signrawtransaction,          false,  false },
 312     { "sendrawtransaction",         &sendrawtransaction,          false,  false },
 313     { "getcheckpoint",              &getcheckpoint,               true,   false },
 314     { "reservebalance",             &reservebalance,              false,  true},
 315     { "checkwallet",                &checkwallet,                 false,  true},
 316     { "repairwallet",               &repairwallet,                false,  true},
 317     { "resendwallettransactions",   &resendwallettransactions,    false,  true},
 318     { "makekeypair",                &makekeypair,                 false,  true},
 319     { "newmalleablekey",            &newmalleablekey,             false,  false},
 320     { "adjustmalleablekey",         &adjustmalleablekey,          false,  false},
 321     { "adjustmalleablepubkey",      &adjustmalleablepubkey,       false,  false},
 322     { "listmalleableviews",         &listmalleableviews,          false,  false},
 323     { "dumpmalleablekey",           &dumpmalleablekey,            false,  false},
 324     { "importmalleablekey",         &importmalleablekey,          true,   false },
 325     { "sendalert",                  &sendalert,                   false,  false},
 326 };
 327
 328 CRPCTable::CRPCTable()
 329 {
 330     unsigned int vcidx;
 331     for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++)
 332     {
 333         const CRPCCommand *pcmd;
 334
 335         pcmd = &vRPCCommands[vcidx];
 336         mapCommands[pcmd->name] = pcmd;
 337     }
 338 }
 339
 340 const CRPCCommand *CRPCTable::operator[](string name) const
 341 {
 342     map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
 343     if (it == mapCommands.end())
 344         return NULL;
 345     return (*it).second;
 346 }
 347
 348 string rfc1123Time()
 349 {
 350     return DateTimeStrFormat("%a, %d %b %Y %H:%M:%S +0000", GetTime());
 351 }
 352
 353 static string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
 354 {
 355     if (nStatus == HTTP_UNAUTHORIZED)
 356         return strprintf("HTTP/1.0 401 Authorization Required\r\n"
 357             "Date: %s\r\n"
 358             "Server: novacoin-json-rpc/%s\r\n"
 359             "WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n"
 360             "Content-Type: text/html\r\n"
 361             "Content-Length: 296\r\n"
 362             "\r\n"
 363             "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\r\n"
 364             "\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\r\n"
 365             "<HTML>\r\n"
 366             "<HEAD>\r\n"
 367             "<TITLE>Error</TITLE>\r\n"
 368             "<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=ISO-8859-1'>\r\n"
 369             "</HEAD>\r\n"
 370             "<BODY><H1>401 Unauthorized.</H1></BODY>\r\n"
 371             "</HTML>\r\n", rfc1123Time().c_str(), FormatFullVersion().c_str());
 372     const char *cStatus;
 373          if (nStatus == HTTP_OK) cStatus = "OK";
 374     else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request";
 375     else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden";
 376     else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found";
 377     else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error";
 378     else cStatus = "";
 379     return strprintf(
 380             "HTTP/1.1 %d %s\r\n"
 381             "Date: %s\r\n"
 382             "Connection: %s\r\n"
 383             "Content-Length: %" PRIszu "\r\n"
 384             "Content-Type: application/json\r\n"
 385             "Server: novacoin-json-rpc/%s\r\n"
 386             "\r\n"
 387             "%s",
 388         nStatus,
 389         cStatus,
 390         rfc1123Time().c_str(),
 391         keepalive ? "keep-alive" : "close",
 392         strMsg.size(),
 393         FormatFullVersion().c_str(),
 394         strMsg.c_str());
 395 }
 396
 397 int ReadHTTPStatus(std::basic_istream<char>& stream, int &proto)
 398 {
 399     string str;
 400     getline(stream, str);
 401     vector<string> vWords;
 402     istringstream iss(str);
 403     copy(istream_iterator<string>(iss), istream_iterator<string>(), back_inserter(vWords));
 404     if (vWords.size() < 2)
 405         return HTTP_INTERNAL_SERVER_ERROR;
 406     proto = 0;
 407     const char *ver = strstr(str.c_str(), "HTTP/1.");
 408     if (ver != NULL)
 409         proto = atoi(ver+7);
 410     return atoi(vWords[1].c_str());
 411 }
 412
 413 int ReadHTTPHeader(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet)
 414 {
 415     int nLen = 0;
 416     for ( ; ; )
 417     {
 418         string str;
 419         std::getline(stream, str);
 420         if (str.empty() || str == "\r")
 421             break;
 422         string::size_type nColon = str.find(":");
 423         if (nColon != string::npos)
 424         {
 425             string strHeader = str.substr(0, nColon);
 426             boost::trim(strHeader);
 427             boost::to_lower(strHeader);
 428             string strValue = str.substr(nColon+1);
 429             boost::trim(strValue);
 430             mapHeadersRet[strHeader] = strValue;
 431             if (strHeader == "content-length")
 432                 nLen = atoi(strValue.c_str());
 433         }
 434     }
 435     return nLen;
 436 }
 437
 438 int ReadHTTP(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet, string& strMessageRet)
 439 {
 440     mapHeadersRet.clear();
 441     strMessageRet.clear();
 442
 443     // Read status
 444     int nProto = 0;
 445     int nStatus = ReadHTTPStatus(stream, nProto);
 446
 447     // Read header
 448     int nLen = ReadHTTPHeader(stream, mapHeadersRet);
 449     if (nLen < 0 || nLen > (int)MAX_SIZE)
 450         return HTTP_INTERNAL_SERVER_ERROR;
 451
 452     // Read message
 453     if (nLen > 0)
 454     {
 455         vector<char> vch(nLen);
 456         stream.read(&vch[0], nLen);
 457         strMessageRet = string(vch.begin(), vch.end());
 458     }
 459
 460     string sConHdr = mapHeadersRet["connection"];
 461
 462     if ((sConHdr != "close") && (sConHdr != "keep-alive"))
 463     {
 464         if (nProto >= 1)
 465             mapHeadersRet["connection"] = "keep-alive";
 466         else
 467             mapHeadersRet["connection"] = "close";
 468     }
 469
 470     return nStatus;
 471 }
 472
 473 bool HTTPAuthorized(ix::WebSocketHttpHeaders& mapHeaders)
 474 {
 475     string strAuth = mapHeaders["authorization"];
 476     if (strAuth.substr(0,6) != "Basic ")
 477         return false;
 478     string strUserPass64 = strAuth.substr(6); boost::trim(strUserPass64);
 479     string strUserPass = DecodeBase64(strUserPass64);
 480     return TimingResistantEqual(strUserPass, strRPCUserColonPass);
 481 }
 482
 483 //
 484 // JSON-RPC protocol.  Bitcoin speaks version 1.0 for maximum compatibility,
 485 // but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
 486 // unspecified (HTTP errors and contents of 'error').
 487 //
 488 // 1.0 spec: http://json-rpc.org/wiki/specification
 489 // 1.2 spec: http://groups.google.com/group/json-rpc/web/json-rpc-over-http
 490 // http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx
 491 //
 492
 493 string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id)
 494 {
 495     Object request;
 496     request.push_back(Pair("method", strMethod));
 497     request.push_back(Pair("params", params));
 498     request.push_back(Pair("id", id));
 499     return write_string(Value(request), false) + "\n";
 500 }
 501
 502 Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id)
 503 {
 504     Object reply;
 505     if (error.type() != null_type)
 506         reply.push_back(Pair("result", Value::null));
 507     else
 508         reply.push_back(Pair("result", result));
 509     reply.push_back(Pair("error", error));
 510     reply.push_back(Pair("id", id));
 511     return reply;
 512 }
 513
 514 string JSONRPCReply(const Value& result, const Value& error, const Value& id)
 515 {
 516     Object reply = JSONRPCReplyObj(result, error, id);
 517     return write_string(Value(reply), false) + "\n";
 518 }
 519
 520 string ErrorReply(const Object& objError, const Value& id)
 521 {
 522     // Send error reply from json-rpc error object
 523     int nStatus = HTTP_INTERNAL_SERVER_ERROR;
 524     int code = find_value(objError, "code").get_int();
 525     if (code == RPC_INVALID_REQUEST) nStatus = HTTP_BAD_REQUEST;
 526     else if (code == RPC_METHOD_NOT_FOUND) nStatus = HTTP_NOT_FOUND;
 527     return JSONRPCReply(Value::null, objError, id);
 528 }
 529
 530 class JSONRequest
 531 {
 532 public:
 533     Value id;
 534     string strMethod;
 535     Array params;
 536
 537     JSONRequest() { id = Value::null; }
 538     void parse(const Value& valRequest);
 539 };
 540
 541 void JSONRequest::parse(const Value& valRequest)
 542 {
 543     // Parse request
 544     if (valRequest.type() != obj_type)
 545         throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
 546     const Object& request = valRequest.get_obj();
 547
 548     // Parse id now so errors from here on will have the id
 549     id = find_value(request, "id");
 550
 551     // Parse method
 552     Value valMethod = find_value(request, "method");
 553     if (valMethod.type() == null_type)
 554         throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
 555     if (valMethod.type() != str_type)
 556         throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
 557     strMethod = valMethod.get_str();
 558     if (strMethod != "getwork" && strMethod != "getblocktemplate")
 559         printf("RPCServer method=%s\n", strMethod.c_str());
 560
 561     // Parse params
 562     Value valParams = find_value(request, "params");
 563     if (valParams.type() == array_type)
 564         params = valParams.get_array();
 565     else if (valParams.type() == null_type)
 566         params = Array();
 567     else
 568         throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
 569 }
 570
 571 static Object JSONRPCExecOne(const Value& req)
 572 {
 573     Object rpc_result;
 574
 575     JSONRequest jreq;
 576     try {
 577         jreq.parse(req);
 578
 579         Value result = tableRPC.execute(jreq.strMethod, jreq.params);
 580         rpc_result = JSONRPCReplyObj(result, Value::null, jreq.id);
 581     }
 582     catch (Object& objError)
 583     {
 584         rpc_result = JSONRPCReplyObj(Value::null, objError, jreq.id);
 585     }
 586     catch (std::exception& e)
 587     {
 588         rpc_result = JSONRPCReplyObj(Value::null,
 589                                      JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
 590     }
 591
 592     return rpc_result;
 593 }
 594
 595 static string JSONRPCExecBatch(const Array& vReq)
 596 {
 597     Array ret;
 598     for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
 599         ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
 600
 601     return write_string(Value(ret), false) + "\n";
 602 }
 603
 604 static CCriticalSection cs_THREAD_RPCHANDLER;
 605
 606 void StartRPCServer()
 607 {
 608 strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
 609     if (mapArgs["-rpcpassword"].empty())
 610     {
 611         unsigned char rand_pwd[32];
 612         RAND_bytes(rand_pwd, 32);
 613         string strWhatAmI = "To use novacoind";
 614         if (mapArgs.count("-server"))
 615             strWhatAmI = strprintf(_("To use the %s option"), "\"-server\"");
 616         else if (mapArgs.count("-daemon"))
 617             strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\"");
 618         uiInterface.ThreadSafeMessageBox(strprintf(
 619             _("%s, you must set a rpcpassword in the configuration file:\n %s\n"
 620               "It is recommended you use the following random password:\n"
 621               "rpcuser=novacoinrpc\n"
 622               "rpcpassword=%s\n"
 623               "(you do not need to remember this password)\n"
 624               "If the file does not exist, create it with owner-readable-only file permissions.\n"),
 625                 strWhatAmI.c_str(),
 626                 GetConfigFile().string().c_str(),
 627                 EncodeBase58(&rand_pwd[0],&rand_pwd[0]+32).c_str()),
 628             _("Error"), CClientUIInterface::OK | CClientUIInterface::MODAL);
 629         StartShutdown();
 630         return;
 631     }
 632
 633     string host = GetArg("-rpchost", "127.0.0.1");
 634     int port = GetArg("-rpcport", GetDefaultRPCPort());
 635
 636     g_server = std::unique_ptr<ix::HttpServer>(new ix::HttpServer(port, host));
 637
 638     LOCK(cs_THREAD_RPCHANDLER);
 639
 640     g_server->setOnConnectionCallback([](ix::HttpRequestPtr request, std::shared_ptr<ix::ConnectionState> connectionState) -> ix::HttpResponsePtr {
 641
 642         ix::WebSocketHttpHeaders headers;
 643         headers["Server"] = string("novacoin-json-rpc/") + FormatFullVersion();
 644         headers["WWW-Authenticate"] = "Basic realm=\"jsonrpc\"";
 645
 646         if (!HTTPAuthorized(request->headers))
 647         {
 648             printf("ThreadRPCServer incorrect password attempt from %s\n", connectionState->getRemoteIp().c_str());
 649             connectionState->setTerminated();
 650             return std::make_shared<ix::HttpResponse>(401, "Unauthorized", ix::HttpErrorCode::Ok, headers, "Not authorized");
 651         }
 652
 653         if (request->method != "POST") {
 654             connectionState->setTerminated();
 655             return std::make_shared<ix::HttpResponse>(400, "Bad request", ix::HttpErrorCode::Ok, headers, "Bad request");
 656         }
 657
 658         JSONRequest jreq;
 659
 660         try
 661         {
 662             // Parse request
 663             Value valRequest;
 664             if (!read_string(request->body, valRequest))
 665                 throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
 666
 667             string strReply;
 668
 669             // singleton request
 670             if (valRequest.type() == obj_type) {
 671                 jreq.parse(valRequest);
 672
 673                 // Execute request
 674                 Value result = tableRPC.execute(jreq.strMethod, jreq.params);
 675
 676                 // Send reply
 677                 strReply = JSONRPCReply(result, Value::null, jreq.id);
 678
 679             // array of requests
 680             } else if (valRequest.type() == array_type)
 681                 // Execute batch of requests
 682                 strReply = JSONRPCExecBatch(valRequest.get_array());
 683             else
 684                 throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error");
 685
 686             // Send reply to client
 687             return std::make_shared<ix::HttpResponse>(200, "OK", ix::HttpErrorCode::Ok, headers, strReply);
 688
 689         }
 690         catch(Object& objError)
 691         {
 692             return std::make_shared<ix::HttpResponse>(500, "Internal Server Error", ix::HttpErrorCode::Ok, headers, ErrorReply(objError, jreq.id));
 693         }
 694         catch(std::exception& e)
 695         {
 696             return std::make_shared<ix::HttpResponse>(500, "Internal Server Error", ix::HttpErrorCode::Ok, headers, ErrorReply(JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id));
 697         }
 698     });
 699
 700     std::pair<bool, std::string> result = g_server->listen();
 701     if (!result.first) {
 702         auto strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on host %s: %s"), port, host.c_str(), result.second.c_str());
 703         uiInterface.ThreadSafeMessageBox(strerr, _("Error"), CClientUIInterface::OK | CClientUIInterface::MODAL);
 704         return StartShutdown();
 705     }
 706
 707     // Run listening thread
 708     g_server->start();
 709
 710     // We're listening now
 711     vnThreadsRunning[THREAD_RPCLISTENER]++;
 712 }
 713
 714 void StopRPCServer()
 715 {
 716     LOCK(cs_THREAD_RPCHANDLER);
 717     if (g_server) g_server->stop();
 718     vnThreadsRunning[THREAD_RPCLISTENER]--;
 719 }
 720
 721 json_spirit::Value CRPCTable::execute(const std::string &strMethod, const json_spirit::Array &params) const
 722 {
 723     // Find method
 724     const CRPCCommand *pcmd = tableRPC[strMethod];
 725     if (!pcmd)
 726         throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
 727
 728     // Observe safe mode
 729     string strWarning = GetWarnings("rpc");
 730     if (!strWarning.empty() && !GetBoolArg("-disablesafemode") &&
 731         !pcmd->okSafeMode)
 732         throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
 733
 734     try
 735     {
 736         // Execute
 737         Value result;
 738         {
 739             if (pcmd->unlocked)
 740                 result = pcmd->actor(params, false);
 741             else {
 742                 LOCK2(cs_main, pwalletMain->cs_wallet);
 743                 result = pcmd->actor(params, false);
 744             }
 745         }
 746         return result;
 747     }
 748     catch (std::exception& e)
 749     {
 750         throw JSONRPCError(RPC_MISC_ERROR, e.what());
 751     }
 752 }
 753
 754 std::vector<std::string> CRPCTable::listCommands() const
 755 {
 756     std::vector<std::string> commandList;
 757     typedef std::map<std::string, const CRPCCommand*> commandMap;
 758
 759     std::transform( mapCommands.begin(), mapCommands.end(),
 760                    std::back_inserter(commandList),
 761                    boost::bind(&commandMap::value_type::first,_1) );
 762     return commandList;
 763 }
 764
 765 Object CallRPC(const string& strMethod, const Array& params)
 766 {
 767     if (mapArgs["-rpcuser"].empty() && mapArgs["-rpcpassword"].empty())
 768         throw runtime_error(strprintf(
 769             _("You must set rpcpassword=<password> in the configuration file:\n%s\n"
 770               "If the file does not exist, create it with owner-readable-only file permissions."),
 771                 GetConfigFile().string().c_str()));
 772
 773     // Create HTTP client
 774     ix::HttpClient httpClient;
 775     ix::HttpRequestArgsPtr args = httpClient.createRequest();
 776
 777     // HTTP basic authentication
 778     ix::WebSocketHttpHeaders mapRequestHeaders;
 779     string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]);
 780     mapRequestHeaders["Authorization"] = string("Basic ") + strUserPass64;
 781     args->extraHeaders = mapRequestHeaders;
 782
 783     // Timeouts
 784     args->connectTimeout = GetArgInt("-rpc_connecttimeout", 30000);
 785     args->transferTimeout = GetArgInt("-rpc_transfertimeout", 30000);
 786
 787     bool fUseSSL = GetBoolArg("-rpcssl");
 788     string url = string(fUseSSL ? "https://" : "http://") + GetArg("-rpcconnect", "127.0.0.1") + ":" + GetArg("-rpcport", itostr(GetDefaultRPCPort()));
 789
 790     // Send request
 791     string strRequest = JSONRPCRequest(strMethod, params, GetRandInt(INT32_MAX));
 792     auto out = httpClient.post(url, strRequest, args);
 793
 794     // Process reply
 795     int nStatus = out->statusCode;
 796     string strReply = out->body;
 797     ix::WebSocketHttpHeaders mapHeaders = out->headers;
 798
 799     // Receive reply
 800     if (nStatus == HTTP_UNAUTHORIZED)
 801         throw runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
 802     else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR)
 803         throw runtime_error(strprintf("server returned HTTP error %d", nStatus));
 804     else if (strReply.empty())
 805         throw runtime_error("no response from server");
 806
 807     // Parse reply
 808     Value valReply;
 809     if (!read_string(strReply, valReply))
 810         throw runtime_error("couldn't parse reply from server");
 811     const Object& reply = valReply.get_obj();
 812     if (reply.empty())
 813         throw runtime_error("expected reply to have result, error and id properties");
 814
 815     return reply;
 816 }
 817
 818
 819
 820
 821 template<typename T>
 822 void ConvertTo(Value& value, bool fAllowNull=false)
 823 {
 824     if (fAllowNull && value.type() == null_type)
 825         return;
 826     if (value.type() == str_type)
 827     {
 828         // reinterpret string as unquoted json value
 829         Value value2;
 830         string strJSON = value.get_str();
 831         if (!read_string(strJSON, value2))
 832             throw runtime_error(string("Error parsing JSON:")+strJSON);
 833         ConvertTo<T>(value2, fAllowNull);
 834         value = value2;
 835     }
 836     else
 837     {
 838         value = value.get_value<T>();
 839     }
 840 }
 841
 842 // Convert strings to command-specific RPC representation
 843 Array RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)
 844 {
 845     Array params;
 846     BOOST_FOREACH(const std::string &param, strParams)
 847         params.push_back(param);
 848
 849     size_t n = params.size();
 850
 851     //
 852     // Special case non-string parameter types
 853     //
 854     if (strMethod == "stop"                   && n > 0) ConvertTo<bool>(params[0]);
 855     if (strMethod == "getaddednodeinfo"       && n > 0) ConvertTo<bool>(params[0]);
 856     if (strMethod == "sendtoaddress"          && n > 1) ConvertTo<double>(params[1]);
 857     if (strMethod == "mergecoins"            && n > 0) ConvertTo<double>(params[0]);
 858     if (strMethod == "mergecoins"            && n > 1) ConvertTo<double>(params[1]);
 859     if (strMethod == "mergecoins"            && n > 2) ConvertTo<double>(params[2]);
 860     if (strMethod == "settxfee"               && n > 0) ConvertTo<double>(params[0]);
 861     if (strMethod == "getreceivedbyaddress"   && n > 1) ConvertTo<int64_t>(params[1]);
 862     if (strMethod == "getreceivedbyaccount"   && n > 1) ConvertTo<int64_t>(params[1]);
 863     if (strMethod == "listreceivedbyaddress"  && n > 0) ConvertTo<int64_t>(params[0]);
 864     if (strMethod == "listreceivedbyaddress"  && n > 1) ConvertTo<bool>(params[1]);
 865     if (strMethod == "listreceivedbyaccount"  && n > 0) ConvertTo<int64_t>(params[0]);
 866     if (strMethod == "listreceivedbyaccount"  && n > 1) ConvertTo<bool>(params[1]);
 867     if (strMethod == "getbalance"             && n > 1) ConvertTo<int64_t>(params[1]);
 868     if (strMethod == "getblock"               && n > 1) ConvertTo<bool>(params[1]);
 869     if (strMethod == "getblockbynumber"       && n > 0) ConvertTo<int64_t>(params[0]);
 870     if (strMethod == "dumpblockbynumber"      && n > 0) ConvertTo<int64_t>(params[0]);
 871     if (strMethod == "getblockbynumber"       && n > 1) ConvertTo<bool>(params[1]);
 872     if (strMethod == "getblockhash"           && n > 0) ConvertTo<int64_t>(params[0]);
 873     if (strMethod == "move"                   && n > 2) ConvertTo<double>(params[2]);
 874     if (strMethod == "move"                   && n > 3) ConvertTo<int64_t>(params[3]);
 875     if (strMethod == "sendfrom"               && n > 2) ConvertTo<double>(params[2]);
 876     if (strMethod == "sendfrom"               && n > 3) ConvertTo<int64_t>(params[3]);
 877     if (strMethod == "listtransactions"       && n > 1) ConvertTo<int64_t>(params[1]);
 878     if (strMethod == "listtransactions"       && n > 2) ConvertTo<int64_t>(params[2]);
 879     if (strMethod == "listaccounts"           && n > 0) ConvertTo<int64_t>(params[0]);
 880     if (strMethod == "walletpassphrase"       && n > 1) ConvertTo<int64_t>(params[1]);
 881     if (strMethod == "walletpassphrase"       && n > 2) ConvertTo<bool>(params[2]);
 882     if (strMethod == "getblocktemplate"       && n > 0) ConvertTo<Object>(params[0]);
 883     if (strMethod == "listsinceblock"         && n > 1) ConvertTo<int64_t>(params[1]);
 884
 885     if (strMethod == "scaninput"              && n > 0) ConvertTo<Object>(params[0]);
 886
 887     if (strMethod == "sendalert"              && n > 2) ConvertTo<int64_t>(params[2]);
 888     if (strMethod == "sendalert"              && n > 3) ConvertTo<int64_t>(params[3]);
 889     if (strMethod == "sendalert"              && n > 4) ConvertTo<int64_t>(params[4]);
 890     if (strMethod == "sendalert"              && n > 5) ConvertTo<int64_t>(params[5]);
 891     if (strMethod == "sendalert"              && n > 6) ConvertTo<int64_t>(params[6]);
 892
 893     if (strMethod == "sendmany"               && n > 1) ConvertTo<Object>(params[1]);
 894     if (strMethod == "sendmany"               && n > 2) ConvertTo<int64_t>(params[2]);
 895     if (strMethod == "reservebalance"         && n > 0) ConvertTo<bool>(params[0]);
 896     if (strMethod == "reservebalance"         && n > 1) ConvertTo<double>(params[1]);
 897     if (strMethod == "addmultisigaddress"     && n > 0) ConvertTo<int64_t>(params[0]);
 898     if (strMethod == "addmultisigaddress"     && n > 1) ConvertTo<Array>(params[1]);
 899     if (strMethod == "listunspent"            && n > 0) ConvertTo<int64_t>(params[0]);
 900     if (strMethod == "listunspent"            && n > 1) ConvertTo<int64_t>(params[1]);
 901     if (strMethod == "listunspent"            && n > 2) ConvertTo<Array>(params[2]);
 902     if (strMethod == "getrawtransaction"      && n > 1) ConvertTo<int64_t>(params[1]);
 903     if (strMethod == "createrawtransaction"   && n > 0) ConvertTo<Array>(params[0]);
 904     if (strMethod == "createrawtransaction"   && n > 1) ConvertTo<Object>(params[1]);
 905     if (strMethod == "createmultisig"         && n > 0) ConvertTo<int64_t>(params[0]);
 906     if (strMethod == "createmultisig"         && n > 1) ConvertTo<Array>(params[1]);
 907     if (strMethod == "signrawtransaction"     && n > 1) ConvertTo<Array>(params[1], true);
 908     if (strMethod == "signrawtransaction"     && n > 2) ConvertTo<Array>(params[2], true);
 909     if (strMethod == "keypoolrefill"          && n > 0) ConvertTo<int64_t>(params[0]);
 910     if (strMethod == "keypoolreset"           && n > 0) ConvertTo<int64_t>(params[0]);
 911     if (strMethod == "importaddress"          && n > 2) ConvertTo<bool>(params[2]);
 912     if (strMethod == "importprivkey"          && n > 2) ConvertTo<bool>(params[2]);
 913
 914     return params;
 915 }
 916
 917 int CommandLineRPC(int argc, char *argv[])
 918 {
 919     string strPrint;
 920     int nRet = 0;
 921     try
 922     {
 923         // Skip switches
 924         while (argc > 1 && IsSwitchChar(argv[1][0]))
 925         {
 926             argc--;
 927             argv++;
 928         }
 929
 930         // Method
 931         if (argc < 2)
 932             throw runtime_error("too few parameters");
 933         string strMethod = argv[1];
 934
 935         // Parameters default to strings
 936         std::vector<std::string> strParams(&argv[2], &argv[argc]);
 937         Array params = RPCConvertValues(strMethod, strParams);
 938
 939         // Execute
 940         Object reply = CallRPC(strMethod, params);
 941
 942         // Parse reply
 943         const Value& result = find_value(reply, "result");
 944         const Value& error  = find_value(reply, "error");
 945
 946         if (error.type() != null_type)
 947         {
 948             // Error
 949             strPrint = "error: " + write_string(error, false);
 950             int code = find_value(error.get_obj(), "code").get_int();
 951             nRet = abs(code);
 952         }
 953         else
 954         {
 955             // Result
 956             if (result.type() == null_type)
 957                 strPrint.clear();
 958             else if (result.type() == str_type)
 959                 strPrint = result.get_str();
 960             else
 961                 strPrint = write_string(result, true);
 962         }
 963     }
 964     catch (std::exception& e)
 965     {
 966         strPrint = string("error: ") + e.what();
 967         nRet = 87;
 968     }
 969     catch (...)
 970     {
 971         PrintException(NULL, "CommandLineRPC()");
 972     }
 973
 974     if (!strPrint.empty())
 975     {
 976         fprintf((nRet == 0 ? stdout : stderr), "%s\n", strPrint.c_str());
 977     }
 978     return nRet;
 979 }
 980
 981
 982 const CRPCTable tableRPC;