text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2015 The Bitcoin Core developers
  // Copyright (c) 2014-2017 The Dash Core developers
  // Copyright (c) 2018-2018 The H2O Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "rpcclient.h"
  
  #include "rpcprotocol.h"
  #include "util.h"
  
  #include <set>
  #include <stdint.h>
  
  #include <boost/algorithm/string/case_conv.hpp> // for to_lower()
  #include <univalue.h>
  
  using namespace std;
  
  class CRPCConvertParam
  {
  public:
      std::string methodName;            //! method whose params want conversion
      int paramIdx;                      //! 0-based idx of param to convert
  };
  static const CRPCConvertParam vRPCConvertParams[] =
  {
      { "stop", 0 },
      { "setmocktime", 0 },
      { "getaddednodeinfo", 0 },
      { "setgenerate", 0 },
      { "setgenerate", 1 },
      { "generate", 0 },
      { "getnetworkhashps", 0 },
      { "getnetworkhashps", 1 },
      { "sendtoaddress", 1 },
      { "sendtoaddress", 4 },
      { "sendtoaddress", 5 },
      { "sendtoaddress", 6 },
      { "instantsendtoaddress", 1 },
      { "settxfee", 0 },
      { "getreceivedbyaddress", 1 },
      { "getreceivedbyaccount", 1 },
      { "listreceivedbyaddress", 0 },
      { "listreceivedbyaddress", 1 },
      { "listreceivedbyaddress", 2 },
      { "listreceivedbyaccount", 0 },
      { "listreceivedbyaccount", 1 },
      { "listreceivedbyaccount", 2 },
      { "getbalance", 1 },
      { "getbalance", 2 },
      { "getchaintips", 0 },
      { "getchaintips", 1 },
      { "getblockhash", 0 },
      { "getsuperblockbudget", 0 },
      { "move", 2 },
      { "move", 3 },
      { "sendfrom", 2 },
      { "sendfrom", 3 },
      { "listtransactions", 1 },
      { "listtransactions", 2 },
      { "listtransactions", 3 },
      { "listaccounts", 0 },
      { "listaccounts", 1 },
      { "walletpassphrase", 1 },
      { "walletpassphrase", 2 },
      { "getblocktemplate", 0 },
      { "listsinceblock", 1 },
      { "listsinceblock", 2 },
      { "sendmany", 1 },
      { "sendmany", 2 },
      { "sendmany", 4 },
      { "sendmany", 5 },
      { "sendmany", 6 },
      { "addmultisigaddress", 0 },
      { "addmultisigaddress", 1 },
      { "makekeypair", 0 },
      { "makekeypair", 1 },
      { "createmultisig", 0 },
      { "createmultisig", 1 },
      { "listunspent", 0 },
      { "listunspent", 1 },
      { "listunspent", 2 },
      { "getblock", 1 },
      { "getblockheader", 1 },
      { "getblockheaders", 1 },
      { "getblockheaders", 2 },
      { "gettransaction", 1 },
      { "getrawtransaction", 1 },
      { "createrawtransaction", 0 },
      { "createrawtransaction", 1 },
      { "createrawtransaction", 2 },
      { "signrawtransaction", 1 },
      { "signrawtransaction", 2 },
      { "sendrawtransaction", 1 },
      { "sendrawtransaction", 2 },    
      { "fundrawtransaction", 1 },
      { "gettxout", 1 },
      { "gettxout", 2 },
      { "gettxoutproof", 0 },
      { "lockunspent", 0 },
      { "lockunspent", 1 },
      { "importprivkey", 2 },
      { "importelectrumwallet", 1 },
      { "importaddress", 2 },
      { "importaddress", 3 },
      { "importpubkey", 2 },
      { "verifychain", 0 },
      { "verifychain", 1 },
      { "keypoolrefill", 0 },
      { "getrawmempool", 0 },
      { "estimatefee", 0 },
      { "estimatepriority", 0 },
      { "estimatesmartfee", 0 },
      { "estimatesmartpriority", 0 },
      { "prioritisetransaction", 1 },
      { "prioritisetransaction", 2 },
      { "setban", 2 },
      { "setban", 3 },
      { "spork", 1 },
      { "voteraw", 1 },
      { "voteraw", 5 },
      { "getblockhashes", 0 },
      { "getblockhashes", 1 },
      { "getspentinfo", 0},
      { "getaddresstxids", 0},
      { "getaddressbalance", 0},
      { "getaddressdeltas", 0},
      { "getaddressutxos", 0},
      { "getaddressmempool", 0},
  };
  
  class CRPCConvertTable
  {
  private:
      std::set<std::pair<std::string, int> > members;
  
  public:
      CRPCConvertTable();
  
      bool convert(const std::string& method, int idx) {
          return (members.count(std::make_pair(method, idx)) > 0);
      }
  };
  
  CRPCConvertTable::CRPCConvertTable()
  {
      const unsigned int n_elem =
          (sizeof(vRPCConvertParams) / sizeof(vRPCConvertParams[0]));
  
      for (unsigned int i = 0; i < n_elem; i++) {
          members.insert(std::make_pair(vRPCConvertParams[i].methodName,
                                        vRPCConvertParams[i].paramIdx));
      }
  }
  
  static CRPCConvertTable rpcCvtTable;
  
  /** Non-RFC4627 JSON parser, accepts internal values (such as numbers, true, false, null)
   * as well as objects and arrays.
   */
  UniValue ParseNonRFCJSONValue(const std::string& strVal)
  {
      UniValue jVal;
      if (!jVal.read(std::string("[")+strVal+std::string("]")) ||
          !jVal.isArray() || jVal.size()!=1)
          throw runtime_error(string("Error parsing JSON:")+strVal);
      return jVal[0];
  }
  
  /** Convert strings to command-specific RPC representation */
  UniValue RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)
  {
      UniValue params(UniValue::VARR);
  
      for (unsigned int idx = 0; idx < strParams.size(); idx++) {
          const std::string& strVal = strParams[idx];
  
          if (!rpcCvtTable.convert(strMethod, idx)) {
              // insert string value directly
              params.push_back(strVal);
          } else {
              // parse string as JSON, insert bool/number/object/etc. value
              params.push_back(ParseNonRFCJSONValue(strVal));
          }
      }
  
      return params;
  }
  
  