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 "chainparams.h"
   7 #include "init.h"
   8 #include "util.h"
   9 #include "sync.h"
  10 #include "ui_interface.h"
  11 #include "base58.h"
  12 #include "bitcoinrpc.h"
  13 #include "db.h"
  14
  15 #include <boost/algorithm/string.hpp>
  16 #include <boost/asio.hpp>
  17 #include <boost/asio/ip/v6_only.hpp>
  18 #include <boost/asio/ssl.hpp>
  19 #include <boost/bind.hpp>
  20 #include <boost/filesystem.hpp>
  21 #include <boost/filesystem/fstream.hpp>
  22 #include <boost/foreach.hpp>
  23 #include <boost/iostreams/concepts.hpp>
  24 #include <boost/iostreams/stream.hpp>
  25 #include <boost/lexical_cast.hpp>
  26 #include <boost/shared_ptr.hpp>
  27 #include <list>
  28
  29 using namespace std;
  30 using namespace boost;
  31 using namespace boost::asio;
  32 using namespace json_spirit;
  33
  34 static std::string strRPCUserColonPass;
  35
  36 // These are created by StartRPCThreads, destroyed in StopRPCThreads
  37 static asio::io_service* rpc_io_service = NULL;
  38 static map<string, boost::shared_ptr<deadline_timer> > deadlineTimers;
  39 static ssl::context* rpc_ssl_context = NULL;
  40 static boost::thread_group* rpc_worker_group = NULL;
  41
  42 Object JSONRPCError(int code, const string& message)
  43 {
  44     Object error;
  45     error.push_back(Pair("code", code));
  46     error.push_back(Pair("message", message));
  47     return error;
  48 }
  49
  50 void RPCTypeCheck(const Array& params,
  51                   const list<Value_type>& typesExpected,
  52                   bool fAllowNull)
  53 {
  54     unsigned int i = 0;
  55     BOOST_FOREACH(Value_type t, typesExpected)
  56     {
  57         if (params.size() <= i)
  58             break;
  59
  60         const Value& v = params[i];
  61         if (!((v.type() == t) || (fAllowNull && (v.type() == null_type))))
  62         {
  63             string err = strprintf("Expected type %s, got %s",
  64                                    Value_type_name[t], Value_type_name[v.type()]);
  65             throw JSONRPCError(RPC_TYPE_ERROR, err);
  66         }
  67         i++;
  68     }
  69 }
  70
  71 void RPCTypeCheck(const Object& o,
  72                   const map<string, Value_type>& typesExpected,
  73                   bool fAllowNull)
  74 {
  75     BOOST_FOREACH(const PAIRTYPE(string, Value_type)& t, typesExpected)
  76     {
  77         const Value& v = find_value(o, t.first);
  78         if (!fAllowNull && v.type() == null_type)
  79             throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first.c_str()));
  80
  81         if (!((v.type() == t.second) || (fAllowNull && (v.type() == null_type))))
  82         {
  83             string err = strprintf("Expected type %s for %s, got %s",
  84                                    Value_type_name[t.second], t.first.c_str(), Value_type_name[v.type()]);
  85             throw JSONRPCError(RPC_TYPE_ERROR, err);
  86         }
  87     }
  88 }
  89
  90 int64 AmountFromValue(const Value& value)
  91 {
  92     double dAmount = value.get_real();
  93     if (dAmount <= 0.0 || dAmount > 21000000.0)
  94         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
  95     int64 nAmount = roundint64(dAmount * COIN);
  96     if (!MoneyRange(nAmount))
  97         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
  98     return nAmount;
  99 }
 100
 101 Value ValueFromAmount(int64 amount)
 102 {
 103     return (double)amount / (double)COIN;
 104 }
 105
 106 std::string HexBits(unsigned int nBits)
 107 {
 108     union {
 109         int32_t nBits;
 110         char cBits[4];
 111     } uBits;
 112     uBits.nBits = htonl((int32_t)nBits);
 113     return HexStr(BEGIN(uBits.cBits), END(uBits.cBits));
 114 }
 115
 116
 117
 118 ///
 119 /// Note: This interface may still be subject to change.
 120 ///
 121
 122 string CRPCTable::help(string strCommand) const
 123 {
 124     string strRet;
 125     set<rpcfn_type> setDone;
 126     for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
 127     {
 128         const CRPCCommand *pcmd = mi->second;
 129         string strMethod = mi->first;
 130         // We already filter duplicates, but these deprecated screw up the sort order
 131         if (strMethod.find("label") != string::npos)
 132             continue;
 133         if (strCommand != "" && strMethod != strCommand)
 134             continue;
 135         try
 136         {
 137             Array params;
 138             rpcfn_type pfn = pcmd->actor;
 139             if (setDone.insert(pfn).second)
 140                 (*pfn)(params, true);
 141         }
 142         catch (std::exception& e)
 143         {
 144             // Help text is returned in an exception
 145             string strHelp = string(e.what());
 146             if (strCommand == "")
 147                 if (strHelp.find('\n') != string::npos)
 148                     strHelp = strHelp.substr(0, strHelp.find('\n'));
 149             strRet += strHelp + "\n";
 150         }
 151     }
 152     if (strRet == "")
 153         strRet = strprintf("help: unknown command: %s\n", strCommand.c_str());
 154     strRet = strRet.substr(0,strRet.size()-1);
 155     return strRet;
 156 }
 157
 158 Value help(const Array& params, bool fHelp)
 159 {
 160     if (fHelp || params.size() > 1)
 161         throw runtime_error(
 162             "help [command]\n"
 163             "List commands, or get help for a command.");
 164
 165     string strCommand;
 166     if (params.size() > 0)
 167         strCommand = params[0].get_str();
 168
 169     return tableRPC.help(strCommand);
 170 }
 171
 172
 173 Value stop(const Array& params, bool fHelp)
 174 {
 175     // Accept the deprecated and ignored 'detach' boolean argument
 176     if (fHelp || params.size() > 1)
 177         throw runtime_error(
 178             "stop\n"
 179             "Stop Bitcoin server.");
 180     // Shutdown will take long enough that the response should get back
 181     StartShutdown();
 182     return "Bitcoin server stopping";
 183 }
 184
 185
 186
 187 //
 188 // Call Table
 189 //
 190
 191
 192 static const CRPCCommand vRPCCommands[] =
 193 { //  name                      actor (function)         okSafeMode threadSafe
 194   //  ------------------------  -----------------------  ---------- ----------
 195     { "help",                   &help,                   true,      true },
 196     { "stop",                   &stop,                   true,      true },
 197     { "getblockcount",          &getblockcount,          true,      false },
 198     { "getconnectioncount",     &getconnectioncount,     true,      false },
 199     { "getpeerinfo",            &getpeerinfo,            true,      false },
 200     { "addnode",                &addnode,                true,      true },
 201     { "getaddednodeinfo",       &getaddednodeinfo,       true,      true },
 202     { "getdifficulty",          &getdifficulty,          true,      false },
 203     { "getgenerate",            &getgenerate,            true,      false },
 204     { "setgenerate",            &setgenerate,            true,      false },
 205     { "gethashespersec",        &gethashespersec,        true,      false },
 206     { "getinfo",                &getinfo,                true,      false },
 207     { "getmininginfo",          &getmininginfo,          true,      false },
 208     { "getnewaddress",          &getnewaddress,          true,      false },
 209     { "getaccountaddress",      &getaccountaddress,      true,      false },
 210     { "setaccount",             &setaccount,             true,      false },
 211     { "getaccount",             &getaccount,             false,     false },
 212     { "getaddressesbyaccount",  &getaddressesbyaccount,  true,      false },
 213     { "sendtoaddress",          &sendtoaddress,          false,     false },
 214     { "getreceivedbyaddress",   &getreceivedbyaddress,   false,     false },
 215     { "getreceivedbyaccount",   &getreceivedbyaccount,   false,     false },
 216     { "listreceivedbyaddress",  &listreceivedbyaddress,  false,     false },
 217     { "listreceivedbyaccount",  &listreceivedbyaccount,  false,     false },
 218     { "backupwallet",           &backupwallet,           true,      false },
 219     { "keypoolrefill",          &keypoolrefill,          true,      false },
 220     { "walletpassphrase",       &walletpassphrase,       true,      false },
 221     { "walletpassphrasechange", &walletpassphrasechange, false,     false },
 222     { "walletlock",             &walletlock,             true,      false },
 223     { "encryptwallet",          &encryptwallet,          false,     false },
 224     { "validateaddress",        &validateaddress,        true,      false },
 225     { "getbalance",             &getbalance,             false,     false },
 226     { "move",                   &movecmd,                false,     false },
 227     { "sendfrom",               &sendfrom,               false,     false },
 228     { "sendmany",               &sendmany,               false,     false },
 229     { "addmultisigaddress",     &addmultisigaddress,     false,     false },
 230     { "createmultisig",         &createmultisig,         true,      true  },
 231     { "getrawmempool",          &getrawmempool,          true,      false },
 232     { "getblock",               &getblock,               false,     false },
 233     { "getblockhash",           &getblockhash,           false,     false },
 234     { "gettransaction",         &gettransaction,         false,     false },
 235     { "listtransactions",       &listtransactions,       false,     false },
 236     { "listaddressgroupings",   &listaddressgroupings,   false,     false },
 237     { "signmessage",            &signmessage,            false,     false },
 238     { "verifymessage",          &verifymessage,          false,     false },
 239     { "getwork",                &getwork,                true,      false },
 240     { "listaccounts",           &listaccounts,           false,     false },
 241     { "settxfee",               &settxfee,               false,     false },
 242     { "getblocktemplate",       &getblocktemplate,       true,      false },
 243     { "submitblock",            &submitblock,            false,     false },
 244     { "listsinceblock",         &listsinceblock,         false,     false },
 245     { "dumpprivkey",            &dumpprivkey,            true,      false },
 246     { "dumpwallet",             &dumpwallet,             true,      false },
 247     { "importprivkey",          &importprivkey,          false,     false },
 248     { "importwallet",           &importwallet,           false,     false },
 249     { "listunspent",            &listunspent,            false,     false },
 250     { "getrawtransaction",      &getrawtransaction,      false,     false },
 251     { "createrawtransaction",   &createrawtransaction,   false,     false },
 252     { "decoderawtransaction",   &decoderawtransaction,   false,     false },
 253     { "signrawtransaction",     &signrawtransaction,     false,     false },
 254     { "sendrawtransaction",     &sendrawtransaction,     false,     false },
 255     { "gettxoutsetinfo",        &gettxoutsetinfo,        true,      false },
 256     { "gettxout",               &gettxout,               true,      false },
 257     { "lockunspent",            &lockunspent,            false,     false },
 258     { "listlockunspent",        &listlockunspent,        false,     false },
 259     { "verifychain",            &verifychain,            true,      false },
 260 };
 261
 262 CRPCTable::CRPCTable()
 263 {
 264     unsigned int vcidx;
 265     for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++)
 266     {
 267         const CRPCCommand *pcmd;
 268
 269         pcmd = &vRPCCommands[vcidx];
 270         mapCommands[pcmd->name] = pcmd;
 271     }
 272 }
 273
 274 const CRPCCommand *CRPCTable::operator[](string name) const
 275 {
 276     map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
 277     if (it == mapCommands.end())
 278         return NULL;
 279     return (*it).second;
 280 }
 281
 282 //
 283 // HTTP protocol
 284 //
 285 // This ain't Apache.  We're just using HTTP header for the length field
 286 // and to be compatible with other JSON-RPC implementations.
 287 //
 288
 289 string HTTPPost(const string& strMsg, const map<string,string>& mapRequestHeaders)
 290 {
 291     ostringstream s;
 292     s << "POST / HTTP/1.1\r\n"
 293       << "User-Agent: bitcoin-json-rpc/" << FormatFullVersion() << "\r\n"
 294       << "Host: 127.0.0.1\r\n"
 295       << "Content-Type: application/json\r\n"
 296       << "Content-Length: " << strMsg.size() << "\r\n"
 297       << "Connection: close\r\n"
 298       << "Accept: application/json\r\n";
 299     BOOST_FOREACH(const PAIRTYPE(string, string)& item, mapRequestHeaders)
 300         s << item.first << ": " << item.second << "\r\n";
 301     s << "\r\n" << strMsg;
 302
 303     return s.str();
 304 }
 305
 306 string rfc1123Time()
 307 {
 308     char buffer[64];
 309     time_t now;
 310     time(&now);
 311     struct tm* now_gmt = gmtime(&now);
 312     string locale(setlocale(LC_TIME, NULL));
 313     setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
 314     strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
 315     setlocale(LC_TIME, locale.c_str());
 316     return string(buffer);
 317 }
 318
 319 static string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
 320 {
 321     if (nStatus == HTTP_UNAUTHORIZED)
 322         return strprintf("HTTP/1.0 401 Authorization Required\r\n"
 323             "Date: %s\r\n"
 324             "Server: bitcoin-json-rpc/%s\r\n"
 325             "WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n"
 326             "Content-Type: text/html\r\n"
 327             "Content-Length: 296\r\n"
 328             "\r\n"
 329             "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\r\n"
 330             "\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\r\n"
 331             "<HTML>\r\n"
 332             "<HEAD>\r\n"
 333             "<TITLE>Error</TITLE>\r\n"
 334             "<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=ISO-8859-1'>\r\n"
 335             "</HEAD>\r\n"
 336             "<BODY><H1>401 Unauthorized.</H1></BODY>\r\n"
 337             "</HTML>\r\n", rfc1123Time().c_str(), FormatFullVersion().c_str());
 338     const char *cStatus;
 339          if (nStatus == HTTP_OK) cStatus = "OK";
 340     else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request";
 341     else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden";
 342     else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found";
 343     else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error";
 344     else cStatus = "";
 345     return strprintf(
 346             "HTTP/1.1 %d %s\r\n"
 347             "Date: %s\r\n"
 348             "Connection: %s\r\n"
 349             "Content-Length: %"PRIszu"\r\n"
 350             "Content-Type: application/json\r\n"
 351             "Server: bitcoin-json-rpc/%s\r\n"
 352             "\r\n"
 353             "%s",
 354         nStatus,
 355         cStatus,
 356         rfc1123Time().c_str(),
 357         keepalive ? "keep-alive" : "close",
 358         strMsg.size(),
 359         FormatFullVersion().c_str(),
 360         strMsg.c_str());
 361 }
 362
 363 bool ReadHTTPRequestLine(std::basic_istream<char>& stream, int &proto,
 364                          string& http_method, string& http_uri)
 365 {
 366     string str;
 367     getline(stream, str);
 368
 369     // HTTP request line is space-delimited
 370     vector<string> vWords;
 371     boost::split(vWords, str, boost::is_any_of(" "));
 372     if (vWords.size() < 2)
 373         return false;
 374
 375     // HTTP methods permitted: GET, POST
 376     http_method = vWords[0];
 377     if (http_method != "GET" && http_method != "POST")
 378         return false;
 379
 380     // HTTP URI must be an absolute path, relative to current host
 381     http_uri = vWords[1];
 382     if (http_uri.size() == 0 || http_uri[0] != '/')
 383         return false;
 384
 385     // parse proto, if present
 386     string strProto = "";
 387     if (vWords.size() > 2)
 388         strProto = vWords[2];
 389
 390     proto = 0;
 391     const char *ver = strstr(strProto.c_str(), "HTTP/1.");
 392     if (ver != NULL)
 393         proto = atoi(ver+7);
 394
 395     return true;
 396 }
 397
 398 int ReadHTTPStatus(std::basic_istream<char>& stream, int &proto)
 399 {
 400     string str;
 401     getline(stream, str);
 402     vector<string> vWords;
 403     boost::split(vWords, str, boost::is_any_of(" "));
 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 ReadHTTPHeaders(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet)
 414 {
 415     int nLen = 0;
 416     loop
 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 ReadHTTPMessage(std::basic_istream<char>& stream, map<string,
 439                     string>& mapHeadersRet, string& strMessageRet,
 440                     int nProto)
 441 {
 442     mapHeadersRet.clear();
 443     strMessageRet = "";
 444
 445     // Read header
 446     int nLen = ReadHTTPHeaders(stream, mapHeadersRet);
 447     if (nLen < 0 || nLen > (int)MAX_SIZE)
 448         return HTTP_INTERNAL_SERVER_ERROR;
 449
 450     // Read message
 451     if (nLen > 0)
 452     {
 453         vector<char> vch(nLen);
 454         stream.read(&vch[0], nLen);
 455         strMessageRet = string(vch.begin(), vch.end());
 456     }
 457
 458     string sConHdr = mapHeadersRet["connection"];
 459
 460     if ((sConHdr != "close") && (sConHdr != "keep-alive"))
 461     {
 462         if (nProto >= 1)
 463             mapHeadersRet["connection"] = "keep-alive";
 464         else
 465             mapHeadersRet["connection"] = "close";
 466     }
 467
 468     return HTTP_OK;
 469 }
 470
 471 bool HTTPAuthorized(map<string, string>& mapHeaders)
 472 {
 473     string strAuth = mapHeaders["authorization"];
 474     if (strAuth.substr(0,6) != "Basic ")
 475         return false;
 476     string strUserPass64 = strAuth.substr(6); boost::trim(strUserPass64);
 477     string strUserPass = DecodeBase64(strUserPass64);
 478     return strUserPass == strRPCUserColonPass;
 479 }
 480
 481 //
 482 // JSON-RPC protocol.  Bitcoin speaks version 1.0 for maximum compatibility,
 483 // but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
 484 // unspecified (HTTP errors and contents of 'error').
 485 //
 486 // 1.0 spec: http://json-rpc.org/wiki/specification
 487 // 1.2 spec: http://groups.google.com/group/json-rpc/web/json-rpc-over-http
 488 // http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx
 489 //
 490
 491 string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id)
 492 {
 493     Object request;
 494     request.push_back(Pair("method", strMethod));
 495     request.push_back(Pair("params", params));
 496     request.push_back(Pair("id", id));
 497     return write_string(Value(request), false) + "\n";
 498 }
 499
 500 Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id)
 501 {
 502     Object reply;
 503     if (error.type() != null_type)
 504         reply.push_back(Pair("result", Value::null));
 505     else
 506         reply.push_back(Pair("result", result));
 507     reply.push_back(Pair("error", error));
 508     reply.push_back(Pair("id", id));
 509     return reply;
 510 }
 511
 512 string JSONRPCReply(const Value& result, const Value& error, const Value& id)
 513 {
 514     Object reply = JSONRPCReplyObj(result, error, id);
 515     return write_string(Value(reply), false) + "\n";
 516 }
 517
 518 void ErrorReply(std::ostream& stream, const Object& objError, const Value& id)
 519 {
 520     // Send error reply from json-rpc error object
 521     int nStatus = HTTP_INTERNAL_SERVER_ERROR;
 522     int code = find_value(objError, "code").get_int();
 523     if (code == RPC_INVALID_REQUEST) nStatus = HTTP_BAD_REQUEST;
 524     else if (code == RPC_METHOD_NOT_FOUND) nStatus = HTTP_NOT_FOUND;
 525     string strReply = JSONRPCReply(Value::null, objError, id);
 526     stream << HTTPReply(nStatus, strReply, false) << std::flush;
 527 }
 528
 529 bool ClientAllowed(const boost::asio::ip::address& address)
 530 {
 531     // Make sure that IPv4-compatible and IPv4-mapped IPv6 addresses are treated as IPv4 addresses
 532     if (address.is_v6()
 533      && (address.to_v6().is_v4_compatible()
 534       || address.to_v6().is_v4_mapped()))
 535         return ClientAllowed(address.to_v6().to_v4());
 536
 537     if (address == asio::ip::address_v4::loopback()
 538      || address == asio::ip::address_v6::loopback()
 539      || (address.is_v4()
 540          // Check whether IPv4 addresses match 127.0.0.0/8 (loopback subnet)
 541       && (address.to_v4().to_ulong() & 0xff000000) == 0x7f000000))
 542         return true;
 543
 544     const string strAddress = address.to_string();
 545     const vector<string>& vAllow = mapMultiArgs["-rpcallowip"];
 546     BOOST_FOREACH(string strAllow, vAllow)
 547         if (WildcardMatch(strAddress, strAllow))
 548             return true;
 549     return false;
 550 }
 551
 552 //
 553 // IOStream device that speaks SSL but can also speak non-SSL
 554 //
 555 template <typename Protocol>
 556 class SSLIOStreamDevice : public iostreams::device<iostreams::bidirectional> {
 557 public:
 558     SSLIOStreamDevice(asio::ssl::stream<typename Protocol::socket> &streamIn, bool fUseSSLIn) : stream(streamIn)
 559     {
 560         fUseSSL = fUseSSLIn;
 561         fNeedHandshake = fUseSSLIn;
 562     }
 563
 564     void handshake(ssl::stream_base::handshake_type role)
 565     {
 566         if (!fNeedHandshake) return;
 567         fNeedHandshake = false;
 568         stream.handshake(role);
 569     }
 570     std::streamsize read(char* s, std::streamsize n)
 571     {
 572         handshake(ssl::stream_base::server); // HTTPS servers read first
 573         if (fUseSSL) return stream.read_some(asio::buffer(s, n));
 574         return stream.next_layer().read_some(asio::buffer(s, n));
 575     }
 576     std::streamsize write(const char* s, std::streamsize n)
 577     {
 578         handshake(ssl::stream_base::client); // HTTPS clients write first
 579         if (fUseSSL) return asio::write(stream, asio::buffer(s, n));
 580         return asio::write(stream.next_layer(), asio::buffer(s, n));
 581     }
 582     bool connect(const std::string& server, const std::string& port)
 583     {
 584         ip::tcp::resolver resolver(stream.get_io_service());
 585         ip::tcp::resolver::query query(server.c_str(), port.c_str());
 586         ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
 587         ip::tcp::resolver::iterator end;
 588         boost::system::error_code error = asio::error::host_not_found;
 589         while (error && endpoint_iterator != end)
 590         {
 591             stream.lowest_layer().close();
 592             stream.lowest_layer().connect(*endpoint_iterator++, error);
 593         }
 594         if (error)
 595             return false;
 596         return true;
 597     }
 598
 599 private:
 600     bool fNeedHandshake;
 601     bool fUseSSL;
 602     asio::ssl::stream<typename Protocol::socket>& stream;
 603 };
 604
 605 class AcceptedConnection
 606 {
 607 public:
 608     virtual ~AcceptedConnection() {}
 609
 610     virtual std::iostream& stream() = 0;
 611     virtual std::string peer_address_to_string() const = 0;
 612     virtual void close() = 0;
 613 };
 614
 615 template <typename Protocol>
 616 class AcceptedConnectionImpl : public AcceptedConnection
 617 {
 618 public:
 619     AcceptedConnectionImpl(
 620             asio::io_service& io_service,
 621             ssl::context &context,
 622             bool fUseSSL) :
 623         sslStream(io_service, context),
 624         _d(sslStream, fUseSSL),
 625         _stream(_d)
 626     {
 627     }
 628
 629     virtual std::iostream& stream()
 630     {
 631         return _stream;
 632     }
 633
 634     virtual std::string peer_address_to_string() const
 635     {
 636         return peer.address().to_string();
 637     }
 638
 639     virtual void close()
 640     {
 641         _stream.close();
 642     }
 643
 644     typename Protocol::endpoint peer;
 645     asio::ssl::stream<typename Protocol::socket> sslStream;
 646
 647 private:
 648     SSLIOStreamDevice<Protocol> _d;
 649     iostreams::stream< SSLIOStreamDevice<Protocol> > _stream;
 650 };
 651
 652 void ServiceConnection(AcceptedConnection *conn);
 653
 654 // Forward declaration required for RPCListen
 655 template <typename Protocol, typename SocketAcceptorService>
 656 static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 657                              ssl::context& context,
 658                              bool fUseSSL,
 659                              AcceptedConnection* conn,
 660                              const boost::system::error_code& error);
 661
 662 /**
 663  * Sets up I/O resources to accept and handle a new connection.
 664  */
 665 template <typename Protocol, typename SocketAcceptorService>
 666 static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 667                    ssl::context& context,
 668                    const bool fUseSSL)
 669 {
 670     // Accept connection
 671     AcceptedConnectionImpl<Protocol>* conn = new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL);
 672
 673     acceptor->async_accept(
 674             conn->sslStream.lowest_layer(),
 675             conn->peer,
 676             boost::bind(&RPCAcceptHandler<Protocol, SocketAcceptorService>,
 677                 acceptor,
 678                 boost::ref(context),
 679                 fUseSSL,
 680                 conn,
 681                 boost::asio::placeholders::error));
 682 }
 683
 684 /**
 685  * Accept and handle incoming connection.
 686  */
 687 template <typename Protocol, typename SocketAcceptorService>
 688 static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
 689                              ssl::context& context,
 690                              const bool fUseSSL,
 691                              AcceptedConnection* conn,
 692                              const boost::system::error_code& error)
 693 {
 694     // Immediately start accepting new connections, except when we're cancelled or our socket is closed.
 695     if (error != asio::error::operation_aborted && acceptor->is_open())
 696         RPCListen(acceptor, context, fUseSSL);
 697
 698     AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(conn);
 699
 700     // TODO: Actually handle errors
 701     if (error)
 702     {
 703         delete conn;
 704     }
 705
 706     // Restrict callers by IP.  It is important to
 707     // do this before starting client thread, to filter out
 708     // certain DoS and misbehaving clients.
 709     else if (tcp_conn && !ClientAllowed(tcp_conn->peer.address()))
 710     {
 711         // Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake.
 712         if (!fUseSSL)
 713             conn->stream() << HTTPReply(HTTP_FORBIDDEN, "", false) << std::flush;
 714         delete conn;
 715     }
 716     else {
 717         ServiceConnection(conn);
 718         conn->close();
 719         delete conn;
 720     }
 721 }
 722
 723 void StartRPCThreads()
 724 {
 725     strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
 726     if (((mapArgs["-rpcpassword"] == "") ||
 727          (mapArgs["-rpcuser"] == mapArgs["-rpcpassword"])) && Params().RequireRPCPassword())
 728     {
 729         unsigned char rand_pwd[32];
 730         RAND_bytes(rand_pwd, 32);
 731         string strWhatAmI = "To use bitcoind";
 732         if (mapArgs.count("-server"))
 733             strWhatAmI = strprintf(_("To use the %s option"), "\"-server\"");
 734         else if (mapArgs.count("-daemon"))
 735             strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\"");
 736         uiInterface.ThreadSafeMessageBox(strprintf(
 737             _("%s, you must set a rpcpassword in the configuration file:\n"
 738               "%s\n"
 739               "It is recommended you use the following random password:\n"
 740               "rpcuser=bitcoinrpc\n"
 741               "rpcpassword=%s\n"
 742               "(you do not need to remember this password)\n"
 743               "The username and password MUST NOT be the same.\n"
 744               "If the file does not exist, create it with owner-readable-only file permissions.\n"
 745               "It is also recommended to set alertnotify so you are notified of problems;\n"
 746               "for example: alertnotify=echo %%s | mail -s \"Bitcoin Alert\" [email protected]\n"),
 747                 strWhatAmI.c_str(),
 748                 GetConfigFile().string().c_str(),
 749                 EncodeBase58(&rand_pwd[0],&rand_pwd[0]+32).c_str()),
 750                 "", CClientUIInterface::MSG_ERROR);
 751         StartShutdown();
 752         return;
 753     }
 754
 755     assert(rpc_io_service == NULL);
 756     rpc_io_service = new asio::io_service();
 757     rpc_ssl_context = new ssl::context(*rpc_io_service, ssl::context::sslv23);
 758
 759     const bool fUseSSL = GetBoolArg("-rpcssl", false);
 760
 761     if (fUseSSL)
 762     {
 763         rpc_ssl_context->set_options(ssl::context::no_sslv2);
 764
 765         filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert"));
 766         if (!pathCertFile.is_complete()) pathCertFile = filesystem::path(GetDataDir()) / pathCertFile;
 767         if (filesystem::exists(pathCertFile)) rpc_ssl_context->use_certificate_chain_file(pathCertFile.string());
 768         else printf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string().c_str());
 769
 770         filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem"));
 771         if (!pathPKFile.is_complete()) pathPKFile = filesystem::path(GetDataDir()) / pathPKFile;
 772         if (filesystem::exists(pathPKFile)) rpc_ssl_context->use_private_key_file(pathPKFile.string(), ssl::context::pem);
 773         else printf("ThreadRPCServer ERROR: missing server private key file %s\n", pathPKFile.string().c_str());
 774
 775         string strCiphers = GetArg("-rpcsslciphers", "TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH");
 776         SSL_CTX_set_cipher_list(rpc_ssl_context->impl(), strCiphers.c_str());
 777     }
 778
 779     // Try a dual IPv6/IPv4 socket, falling back to separate IPv4 and IPv6 sockets
 780     const bool loopback = !mapArgs.count("-rpcallowip");
 781     asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any();
 782     ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", Params().RPCPort()));
 783     boost::system::error_code v6_only_error;
 784     boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
 785
 786     bool fListening = false;
 787     std::string strerr;
 788     try
 789     {
 790         acceptor->open(endpoint.protocol());
 791         acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
 792
 793         // Try making the socket dual IPv6/IPv4 (if listening on the "any" address)
 794         acceptor->set_option(boost::asio::ip::v6_only(loopback), v6_only_error);
 795
 796         acceptor->bind(endpoint);
 797         acceptor->listen(socket_base::max_connections);
 798
 799         RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
 800
 801         fListening = true;
 802     }
 803     catch(boost::system::system_error &e)
 804     {
 805         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());
 806     }
 807
 808     try {
 809         // If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately
 810         if (!fListening || loopback || v6_only_error)
 811         {
 812             bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any();
 813             endpoint.address(bindAddress);
 814
 815             acceptor.reset(new ip::tcp::acceptor(*rpc_io_service));
 816             acceptor->open(endpoint.protocol());
 817             acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
 818             acceptor->bind(endpoint);
 819             acceptor->listen(socket_base::max_connections);
 820
 821             RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
 822
 823             fListening = true;
 824         }
 825     }
 826     catch(boost::system::system_error &e)
 827     {
 828         strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv4: %s"), endpoint.port(), e.what());
 829     }
 830
 831     if (!fListening) {
 832         uiInterface.ThreadSafeMessageBox(strerr, "", CClientUIInterface::MSG_ERROR);
 833         StartShutdown();
 834         return;
 835     }
 836
 837     rpc_worker_group = new boost::thread_group();
 838     for (int i = 0; i < GetArg("-rpcthreads", 4); i++)
 839         rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
 840 }
 841
 842 void StopRPCThreads()
 843 {
 844     if (rpc_io_service == NULL) return;
 845
 846     deadlineTimers.clear();
 847     rpc_io_service->stop();
 848     rpc_worker_group->join_all();
 849     delete rpc_worker_group; rpc_worker_group = NULL;
 850     delete rpc_ssl_context; rpc_ssl_context = NULL;
 851     delete rpc_io_service; rpc_io_service = NULL;
 852 }
 853
 854 void RPCRunHandler(const boost::system::error_code& err, boost::function<void(void)> func)
 855 {
 856     if (!err)
 857         func();
 858 }
 859
 860 void RPCRunLater(const std::string& name, boost::function<void(void)> func, int64 nSeconds)
 861 {
 862     assert(rpc_io_service != NULL);
 863
 864     if (deadlineTimers.count(name) == 0)
 865     {
 866         deadlineTimers.insert(make_pair(name,
 867                                         boost::shared_ptr<deadline_timer>(new deadline_timer(*rpc_io_service))));
 868     }
 869     deadlineTimers[name]->expires_from_now(posix_time::seconds(nSeconds));
 870     deadlineTimers[name]->async_wait(boost::bind(RPCRunHandler, _1, func));
 871 }
 872
 873
 874 class JSONRequest
 875 {
 876 public:
 877     Value id;
 878     string strMethod;
 879     Array params;
 880
 881     JSONRequest() { id = Value::null; }
 882     void parse(const Value& valRequest);
 883 };
 884
 885 void JSONRequest::parse(const Value& valRequest)
 886 {
 887     // Parse request
 888     if (valRequest.type() != obj_type)
 889         throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
 890     const Object& request = valRequest.get_obj();
 891
 892     // Parse id now so errors from here on will have the id
 893     id = find_value(request, "id");
 894
 895     // Parse method
 896     Value valMethod = find_value(request, "method");
 897     if (valMethod.type() == null_type)
 898         throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
 899     if (valMethod.type() != str_type)
 900         throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
 901     strMethod = valMethod.get_str();
 902     if (strMethod != "getwork" && strMethod != "getblocktemplate")
 903         printf("ThreadRPCServer method=%s\n", strMethod.c_str());
 904
 905     // Parse params
 906     Value valParams = find_value(request, "params");
 907     if (valParams.type() == array_type)
 908         params = valParams.get_array();
 909     else if (valParams.type() == null_type)
 910         params = Array();
 911     else
 912         throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
 913 }
 914
 915 static Object JSONRPCExecOne(const Value& req)
 916 {
 917     Object rpc_result;
 918
 919     JSONRequest jreq;
 920     try {
 921         jreq.parse(req);
 922
 923         Value result = tableRPC.execute(jreq.strMethod, jreq.params);
 924         rpc_result = JSONRPCReplyObj(result, Value::null, jreq.id);
 925     }
 926     catch (Object& objError)
 927     {
 928         rpc_result = JSONRPCReplyObj(Value::null, objError, jreq.id);
 929     }
 930     catch (std::exception& e)
 931     {
 932         rpc_result = JSONRPCReplyObj(Value::null,
 933                                      JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
 934     }
 935
 936     return rpc_result;
 937 }
 938
 939 static string JSONRPCExecBatch(const Array& vReq)
 940 {
 941     Array ret;
 942     for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
 943         ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
 944
 945     return write_string(Value(ret), false) + "\n";
 946 }
 947
 948 void ServiceConnection(AcceptedConnection *conn)
 949 {
 950     bool fRun = true;
 951     while (fRun)
 952     {
 953         int nProto = 0;
 954         map<string, string> mapHeaders;
 955         string strRequest, strMethod, strURI;
 956
 957         // Read HTTP request line
 958         if (!ReadHTTPRequestLine(conn->stream(), nProto, strMethod, strURI))
 959             break;
 960
 961         // Read HTTP message headers and body
 962         ReadHTTPMessage(conn->stream(), mapHeaders, strRequest, nProto);
 963
 964         if (strURI != "/") {
 965             conn->stream() << HTTPReply(HTTP_NOT_FOUND, "", false) << std::flush;
 966             break;
 967         }
 968
 969         // Check authorization
 970         if (mapHeaders.count("authorization") == 0)
 971         {
 972             conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush;
 973             break;
 974         }
 975         if (!HTTPAuthorized(mapHeaders))
 976         {
 977             printf("ThreadRPCServer incorrect password attempt from %s\n", conn->peer_address_to_string().c_str());
 978             /* Deter brute-forcing short passwords.
 979                If this results in a DOS the user really
 980                shouldn't have their RPC port exposed.*/
 981             if (mapArgs["-rpcpassword"].size() < 20)
 982                 MilliSleep(250);
 983
 984             conn->stream() << HTTPReply(HTTP_UNAUTHORIZED, "", false) << std::flush;
 985             break;
 986         }
 987         if (mapHeaders["connection"] == "close")
 988             fRun = false;
 989
 990         JSONRequest jreq;
 991         try
 992         {
 993             // Parse request
 994             Value valRequest;
 995             if (!read_string(strRequest, valRequest))
 996                 throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
 997
 998             string strReply;
 999
1000             // singleton request
1001             if (valRequest.type() == obj_type) {
1002                 jreq.parse(valRequest);
1003
1004                 Value result = tableRPC.execute(jreq.strMethod, jreq.params);
1005
1006                 // Send reply
1007                 strReply = JSONRPCReply(result, Value::null, jreq.id);
1008
1009             // array of requests
1010             } else if (valRequest.type() == array_type)
1011                 strReply = JSONRPCExecBatch(valRequest.get_array());
1012             else
1013                 throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error");
1014
1015             conn->stream() << HTTPReply(HTTP_OK, strReply, fRun) << std::flush;
1016         }
1017         catch (Object& objError)
1018         {
1019             ErrorReply(conn->stream(), objError, jreq.id);
1020             break;
1021         }
1022         catch (std::exception& e)
1023         {
1024             ErrorReply(conn->stream(), JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
1025             break;
1026         }
1027     }
1028 }
1029
1030 json_spirit::Value CRPCTable::execute(const std::string &strMethod, const json_spirit::Array &params) const
1031 {
1032     // Find method
1033     const CRPCCommand *pcmd = tableRPC[strMethod];
1034     if (!pcmd)
1035         throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
1036
1037     // Observe safe mode
1038     string strWarning = GetWarnings("rpc");
1039     if (strWarning != "" && !GetBoolArg("-disablesafemode", false) &&
1040         !pcmd->okSafeMode)
1041         throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
1042
1043     try
1044     {
1045         // Execute
1046         Value result;
1047         {
1048             if (pcmd->threadSafe)
1049                 result = pcmd->actor(params, false);
1050             else {
1051                 LOCK2(cs_main, pwalletMain->cs_wallet);
1052                 result = pcmd->actor(params, false);
1053             }
1054         }
1055         return result;
1056     }
1057     catch (std::exception& e)
1058     {
1059         throw JSONRPCError(RPC_MISC_ERROR, e.what());
1060     }
1061 }
1062
1063
1064 Object CallRPC(const string& strMethod, const Array& params)
1065 {
1066     if (mapArgs["-rpcuser"] == "" && mapArgs["-rpcpassword"] == "")
1067         throw runtime_error(strprintf(
1068             _("You must set rpcpassword=<password> in the configuration file:\n%s\n"
1069               "If the file does not exist, create it with owner-readable-only file permissions."),
1070                 GetConfigFile().string().c_str()));
1071
1072     // Connect to localhost
1073     bool fUseSSL = GetBoolArg("-rpcssl", false);
1074     asio::io_service io_service;
1075     ssl::context context(io_service, ssl::context::sslv23);
1076     context.set_options(ssl::context::no_sslv2);
1077     asio::ssl::stream<asio::ip::tcp::socket> sslStream(io_service, context);
1078     SSLIOStreamDevice<asio::ip::tcp> d(sslStream, fUseSSL);
1079     iostreams::stream< SSLIOStreamDevice<asio::ip::tcp> > stream(d);
1080     if (!d.connect(GetArg("-rpcconnect", "127.0.0.1"), GetArg("-rpcport", itostr(Params().RPCPort()))))
1081         throw runtime_error("couldn't connect to server");
1082
1083     // HTTP basic authentication
1084     string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]);
1085     map<string, string> mapRequestHeaders;
1086     mapRequestHeaders["Authorization"] = string("Basic ") + strUserPass64;
1087
1088     // Send request
1089     string strRequest = JSONRPCRequest(strMethod, params, 1);
1090     string strPost = HTTPPost(strRequest, mapRequestHeaders);
1091     stream << strPost << std::flush;
1092
1093     // Receive HTTP reply status
1094     int nProto = 0;
1095     int nStatus = ReadHTTPStatus(stream, nProto);
1096
1097     // Receive HTTP reply message headers and body
1098     map<string, string> mapHeaders;
1099     string strReply;
1100     ReadHTTPMessage(stream, mapHeaders, strReply, nProto);
1101
1102     if (nStatus == HTTP_UNAUTHORIZED)
1103         throw runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
1104     else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR)
1105         throw runtime_error(strprintf("server returned HTTP error %d", nStatus));
1106     else if (strReply.empty())
1107         throw runtime_error("no response from server");
1108
1109     // Parse reply
1110     Value valReply;
1111     if (!read_string(strReply, valReply))
1112         throw runtime_error("couldn't parse reply from server");
1113     const Object& reply = valReply.get_obj();
1114     if (reply.empty())
1115         throw runtime_error("expected reply to have result, error and id properties");
1116
1117     return reply;
1118 }
1119
1120
1121
1122
1123 template<typename T>
1124 void ConvertTo(Value& value, bool fAllowNull=false)
1125 {
1126     if (fAllowNull && value.type() == null_type)
1127         return;
1128     if (value.type() == str_type)
1129     {
1130         // reinterpret string as unquoted json value
1131         Value value2;
1132         string strJSON = value.get_str();
1133         if (!read_string(strJSON, value2))
1134             throw runtime_error(string("Error parsing JSON:")+strJSON);
1135         ConvertTo<T>(value2, fAllowNull);
1136         value = value2;
1137     }
1138     else
1139     {
1140         value = value.get_value<T>();
1141     }
1142 }
1143
1144 // Convert strings to command-specific RPC representation
1145 Array RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)
1146 {
1147     Array params;
1148     BOOST_FOREACH(const std::string &param, strParams)
1149         params.push_back(param);
1150
1151     int n = params.size();
1152
1153     //
1154     // Special case non-string parameter types
1155     //
1156     if (strMethod == "stop"                   && n > 0) ConvertTo<bool>(params[0]);
1157     if (strMethod == "getaddednodeinfo"       && n > 0) ConvertTo<bool>(params[0]);
1158     if (strMethod == "setgenerate"            && n > 0) ConvertTo<bool>(params[0]);
1159     if (strMethod == "setgenerate"            && n > 1) ConvertTo<boost::int64_t>(params[1]);
1160     if (strMethod == "sendtoaddress"          && n > 1) ConvertTo<double>(params[1]);
1161     if (strMethod == "settxfee"               && n > 0) ConvertTo<double>(params[0]);
1162     if (strMethod == "getreceivedbyaddress"   && n > 1) ConvertTo<boost::int64_t>(params[1]);
1163     if (strMethod == "getreceivedbyaccount"   && n > 1) ConvertTo<boost::int64_t>(params[1]);
1164     if (strMethod == "listreceivedbyaddress"  && n > 0) ConvertTo<boost::int64_t>(params[0]);
1165     if (strMethod == "listreceivedbyaddress"  && n > 1) ConvertTo<bool>(params[1]);
1166     if (strMethod == "listreceivedbyaccount"  && n > 0) ConvertTo<boost::int64_t>(params[0]);
1167     if (strMethod == "listreceivedbyaccount"  && n > 1) ConvertTo<bool>(params[1]);
1168     if (strMethod == "getbalance"             && n > 1) ConvertTo<boost::int64_t>(params[1]);
1169     if (strMethod == "getblockhash"           && n > 0) ConvertTo<boost::int64_t>(params[0]);
1170     if (strMethod == "move"                   && n > 2) ConvertTo<double>(params[2]);
1171     if (strMethod == "move"                   && n > 3) ConvertTo<boost::int64_t>(params[3]);
1172     if (strMethod == "sendfrom"               && n > 2) ConvertTo<double>(params[2]);
1173     if (strMethod == "sendfrom"               && n > 3) ConvertTo<boost::int64_t>(params[3]);
1174     if (strMethod == "listtransactions"       && n > 1) ConvertTo<boost::int64_t>(params[1]);
1175     if (strMethod == "listtransactions"       && n > 2) ConvertTo<boost::int64_t>(params[2]);
1176     if (strMethod == "listaccounts"           && n > 0) ConvertTo<boost::int64_t>(params[0]);
1177     if (strMethod == "walletpassphrase"       && n > 1) ConvertTo<boost::int64_t>(params[1]);
1178     if (strMethod == "getblocktemplate"       && n > 0) ConvertTo<Object>(params[0]);
1179     if (strMethod == "listsinceblock"         && n > 1) ConvertTo<boost::int64_t>(params[1]);
1180     if (strMethod == "sendmany"               && n > 1) ConvertTo<Object>(params[1]);
1181     if (strMethod == "sendmany"               && n > 2) ConvertTo<boost::int64_t>(params[2]);
1182     if (strMethod == "addmultisigaddress"     && n > 0) ConvertTo<boost::int64_t>(params[0]);
1183     if (strMethod == "addmultisigaddress"     && n > 1) ConvertTo<Array>(params[1]);
1184     if (strMethod == "createmultisig"         && n > 0) ConvertTo<boost::int64_t>(params[0]);
1185     if (strMethod == "createmultisig"         && n > 1) ConvertTo<Array>(params[1]);
1186     if (strMethod == "listunspent"            && n > 0) ConvertTo<boost::int64_t>(params[0]);
1187     if (strMethod == "listunspent"            && n > 1) ConvertTo<boost::int64_t>(params[1]);
1188     if (strMethod == "listunspent"            && n > 2) ConvertTo<Array>(params[2]);
1189     if (strMethod == "getblock"               && n > 1) ConvertTo<bool>(params[1]);
1190     if (strMethod == "getrawtransaction"      && n > 1) ConvertTo<boost::int64_t>(params[1]);
1191     if (strMethod == "createrawtransaction"   && n > 0) ConvertTo<Array>(params[0]);
1192     if (strMethod == "createrawtransaction"   && n > 1) ConvertTo<Object>(params[1]);
1193     if (strMethod == "signrawtransaction"     && n > 1) ConvertTo<Array>(params[1], true);
1194     if (strMethod == "signrawtransaction"     && n > 2) ConvertTo<Array>(params[2], true);
1195     if (strMethod == "gettxout"               && n > 1) ConvertTo<boost::int64_t>(params[1]);
1196     if (strMethod == "gettxout"               && n > 2) ConvertTo<bool>(params[2]);
1197     if (strMethod == "lockunspent"            && n > 0) ConvertTo<bool>(params[0]);
1198     if (strMethod == "lockunspent"            && n > 1) ConvertTo<Array>(params[1]);
1199     if (strMethod == "importprivkey"          && n > 2) ConvertTo<bool>(params[2]);
1200     if (strMethod == "verifychain"            && n > 0) ConvertTo<boost::int64_t>(params[0]);
1201     if (strMethod == "verifychain"            && n > 1) ConvertTo<boost::int64_t>(params[1]);
1202
1203     return params;
1204 }
1205
1206 int CommandLineRPC(int argc, char *argv[])
1207 {
1208     string strPrint;
1209     int nRet = 0;
1210     try
1211     {
1212         // Skip switches
1213         while (argc > 1 && IsSwitchChar(argv[1][0]))
1214         {
1215             argc--;
1216             argv++;
1217         }
1218
1219         // Method
1220         if (argc < 2)
1221             throw runtime_error("too few parameters");
1222         string strMethod = argv[1];
1223
1224         // Parameters default to strings
1225         std::vector<std::string> strParams(&argv[2], &argv[argc]);
1226         Array params = RPCConvertValues(strMethod, strParams);
1227
1228         // Execute
1229         Object reply = CallRPC(strMethod, params);
1230
1231         // Parse reply
1232         const Value& result = find_value(reply, "result");
1233         const Value& error  = find_value(reply, "error");
1234
1235         if (error.type() != null_type)
1236         {
1237             // Error
1238             strPrint = "error: " + write_string(error, false);
1239             int code = find_value(error.get_obj(), "code").get_int();
1240             nRet = abs(code);
1241         }
1242         else
1243         {
1244             // Result
1245             if (result.type() == null_type)
1246                 strPrint = "";
1247             else if (result.type() == str_type)
1248                 strPrint = result.get_str();
1249             else
1250                 strPrint = write_string(result, true);
1251         }
1252     }
1253     catch (boost::thread_interrupted) {
1254         throw;
1255     }
1256     catch (std::exception& e) {
1257         strPrint = string("error: ") + e.what();
1258         nRet = 87;
1259     }
1260     catch (...) {
1261         PrintException(NULL, "CommandLineRPC()");
1262     }
1263
1264     if (strPrint != "")
1265     {
1266         fprintf((nRet == 0 ? stdout : stderr), "%s\n", strPrint.c_str());
1267     }
1268     return nRet;
1269 }
1270
1271
1272
1273
1274 #ifdef TEST
1275 int main(int argc, char *argv[])
1276 {
1277 #ifdef _MSC_VER
1278     // Turn off Microsoft heap dump noise
1279     _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
1280     _CrtSetReportFile(_CRT_WARN, CreateFile("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
1281 #endif
1282     setbuf(stdin, NULL);
1283     setbuf(stdout, NULL);
1284     setbuf(stderr, NULL);
1285
1286     try
1287     {
1288         if (argc >= 2 && string(argv[1]) == "-server")
1289         {
1290             printf("server ready\n");
1291             ThreadRPCServer(NULL);
1292         }
1293         else
1294         {
1295             return CommandLineRPC(argc, argv);
1296         }
1297     }
1298     catch (boost::thread_interrupted) {
1299         throw;
1300     }
1301     catch (std::exception& e) {
1302         PrintException(&e, "main()");
1303     } catch (...) {
1304         PrintException(NULL, "main()");
1305     }
1306     return 0;
1307 }
1308 #endif
1309
1310 const CRPCTable tableRPC;