[rpc] fundrawtransaction feeRate: Use BTC/kB

Also introduce UniValueType

UniValueType is a wrapper for UniValue::VType which allows setting
a typeAny flag. This flag indicates the type does not matter.

(Used by RPCTypeCheckObj)

qa/rpc-tests/fundrawtransaction.py

@@ -681,9 +681,9 @@ class RawTransactionsTest(BitcoinTestFramework):
         inputs = []
         outputs = {self.nodes[2].getnewaddress() : 1}
         rawtx = self.nodes[3].createrawtransaction(inputs, outputs)
-        result = self.nodes[3].fundrawtransaction(rawtx) # 1000 sat via settxfee
-        result2 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2000})
-        result3 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 10000})
+        result = self.nodes[3].fundrawtransaction(rawtx) # uses min_relay_tx_fee (set by settxfee)
+        result2 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee})
+        result3 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 10*min_relay_tx_fee})
         assert_equal(result['fee']*2, result2['fee'])
         assert_equal(result['fee']*10, result3['fee'])
 

src/rpc/rawtransaction.cpp

@@ -675,7 +675,12 @@ UniValue signrawtransaction(const UniValue& params, bool fHelp)
 
             UniValue prevOut = p.get_obj();
 
-            RPCTypeCheckObj(prevOut, boost::assign::map_list_of("txid", UniValue::VSTR)("vout", UniValue::VNUM)("scriptPubKey", UniValue::VSTR));
+            RPCTypeCheckObj(prevOut,
+                {
+                    {"txid", UniValueType(UniValue::VSTR)},
+                    {"vout", UniValueType(UniValue::VNUM)},
+                    {"scriptPubKey", UniValueType(UniValue::VSTR)},
+                });
 
             uint256 txid = ParseHashO(prevOut, "txid");
 
@@ -703,7 +708,13 @@ UniValue signrawtransaction(const UniValue& params, bool fHelp)
             // if redeemScript given and not using the local wallet (private keys
             // given), add redeemScript to the tempKeystore so it can be signed:
             if (fGivenKeys && scriptPubKey.IsPayToScriptHash()) {
-                RPCTypeCheckObj(prevOut, boost::assign::map_list_of("txid", UniValue::VSTR)("vout", UniValue::VNUM)("scriptPubKey", UniValue::VSTR)("redeemScript",UniValue::VSTR));
+                RPCTypeCheckObj(prevOut,
+                    {
+                        {"txid", UniValueType(UniValue::VSTR)},
+                        {"vout", UniValueType(UniValue::VNUM)},
+                        {"scriptPubKey", UniValueType(UniValue::VSTR)},
+                        {"redeemScript", UniValueType(UniValue::VSTR)},
+                    });
                 UniValue v = find_value(prevOut, "redeemScript");
                 if (!v.isNull()) {
                     vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));

src/rpc/server.cpp

@@ -88,20 +88,18 @@ void RPCTypeCheck(const UniValue& params,
 }
 
 void RPCTypeCheckObj(const UniValue& o,
-                  const map<string, UniValue::VType>& typesExpected,
-                  bool fAllowNull,
-                  bool fStrict)
+    const map<string, UniValueType>& typesExpected,
+    bool fAllowNull,
+    bool fStrict)
 {
-    BOOST_FOREACH(const PAIRTYPE(string, UniValue::VType)& t, typesExpected)
-    {
+    for (const auto& t : typesExpected) {
         const UniValue& v = find_value(o, t.first);
         if (!fAllowNull && v.isNull())
             throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
 
-        if (!((v.type() == t.second) || (fAllowNull && (v.isNull()))))
-        {
+        if (!(t.second.typeAny || v.type() == t.second.type || (fAllowNull && v.isNull()))) {
             string err = strprintf("Expected type %s for %s, got %s",
-                                   uvTypeName(t.second), t.first, uvTypeName(v.type()));
+                uvTypeName(t.second.type), t.first, uvTypeName(v.type()));
             throw JSONRPCError(RPC_TYPE_ERROR, err);
         }
     }

src/rpc/server.h

@@ -32,6 +32,15 @@ namespace RPCServer
 class CBlockIndex;
 class CNetAddr;
 
+/** Wrapper for UniValue::VType, which includes typeAny:
+ * Used to denote don't care type. Only used by RPCTypeCheckObj */
+struct UniValueType {
+    UniValueType(UniValue::VType _type) : typeAny(false), type(_type) {}
+    UniValueType() : typeAny(true) {}
+    bool typeAny;
+    UniValue::VType type;
+};
+
 class JSONRequest
 {
 public:
@@ -60,17 +69,17 @@ bool RPCIsInWarmup(std::string *statusOut);
 /**
  * Type-check arguments; throws JSONRPCError if wrong type given. Does not check that
  * the right number of arguments are passed, just that any passed are the correct type.
- * Use like:  RPCTypeCheck(params, boost::assign::list_of(str_type)(int_type)(obj_type));
  */
 void RPCTypeCheck(const UniValue& params,
                   const std::list<UniValue::VType>& typesExpected, bool fAllowNull=false);
 
 /*
   Check for expected keys/value types in an Object.
-  Use like: RPCTypeCheckObj(object, boost::assign::map_list_of("name", str_type)("value", int_type));
 */
 void RPCTypeCheckObj(const UniValue& o,
-                  const std::map<std::string, UniValue::VType>& typesExpected, bool fAllowNull=false, bool fStrict=false);
+    const std::map<std::string, UniValueType>& typesExpected,
+    bool fAllowNull = false,
+    bool fStrict = false);
 
 /** Opaque base class for timers returned by NewTimerFunc.
  * This provides no methods at the moment, but makes sure that delete

src/wallet/rpcwallet.cpp

@@ -2069,7 +2069,11 @@ UniValue lockunspent(const UniValue& params, bool fHelp)
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, expected object");
         const UniValue& o = output.get_obj();
 
-        RPCTypeCheckObj(o, boost::assign::map_list_of("txid", UniValue::VSTR)("vout", UniValue::VNUM));
+        RPCTypeCheckObj(o,
+            {
+                {"txid", UniValueType(UniValue::VSTR)},
+                {"vout", UniValueType(UniValue::VNUM)},
+            });
 
         string txid = find_value(o, "txid").get_str();
         if (!IsHex(txid))
@@ -2369,7 +2373,7 @@ UniValue fundrawtransaction(const UniValue& params, bool fHelp)
                             "     \"changePosition\"    (numeric, optional, default random) The index of the change output\n"
                             "     \"includeWatching\"   (boolean, optional, default false) Also select inputs which are watch only\n"
                             "     \"lockUnspents\"      (boolean, optional, default false) Lock selected unspent outputs\n"
-                            "     \"feeRate\"           (numeric, optional, default not set: makes wallet determine the fee) Set a specific feerate (satoshis per KB)\n"
+                            "     \"feeRate\"           (numeric, optional, default not set: makes wallet determine the fee) Set a specific feerate (" + CURRENCY_UNIT + " per KB)\n"
                             "   }\n"
                             "                         for backward compatibility: passing in a true instead of an object will result in {\"includeWatching\":true}\n"
                             "\nResult:\n"
@@ -2409,7 +2413,15 @@ UniValue fundrawtransaction(const UniValue& params, bool fHelp)
 
         UniValue options = params[1];
 
-        RPCTypeCheckObj(options, boost::assign::map_list_of("changeAddress", UniValue::VSTR)("changePosition", UniValue::VNUM)("includeWatching", UniValue::VBOOL)("lockUnspents", UniValue::VBOOL)("feeRate", UniValue::VNUM), true, true);
+        RPCTypeCheckObj(options,
+            {
+                {"changeAddress", UniValueType(UniValue::VSTR)},
+                {"changePosition", UniValueType(UniValue::VNUM)},
+                {"includeWatching", UniValueType(UniValue::VBOOL)},
+                {"lockUnspents", UniValueType(UniValue::VBOOL)},
+                {"feeRate", UniValueType()}, // will be checked below
+            },
+            true, true);
 
         if (options.exists("changeAddress")) {
             CBitcoinAddress address(options["changeAddress"].get_str());
@@ -2431,7 +2443,7 @@ UniValue fundrawtransaction(const UniValue& params, bool fHelp)
 
         if (options.exists("feeRate"))
         {
-            feeRate = CFeeRate(options["feeRate"].get_real());
+            feeRate = CFeeRate(AmountFromValue(options["feeRate"]));
             overrideEstimatedFeerate = true;
         }
       }