diff options
Diffstat (limited to 'src/wallet')
| -rw-r--r-- | src/wallet/rpcwallet.cpp | 38 | ||||
| -rw-r--r-- | src/wallet/wallet.cpp | 11 | ||||
| -rw-r--r-- | src/wallet/wallet.h | 2 |
3 files changed, 40 insertions, 11 deletions
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index 5a4fcc743c..7d9d6ce489 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -2464,7 +2464,8 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) throw runtime_error( "fundrawtransaction \"hexstring\" ( options )\n" "\nAdd inputs to a transaction until it has enough in value to meet its out value.\n" - "This will not modify existing inputs, and will add one change output to the outputs.\n" + "This will not modify existing inputs, and will add at most one change output to the outputs.\n" + "No existing outputs will be modified unless \"subtractFeeFromOutputs\" is specified.\n" "Note that inputs which were signed may need to be resigned after completion since in/outputs have been added.\n" "The inputs added will not be signed, use signrawtransaction for that.\n" "Note that all existing inputs must have their previous output transaction be in the wallet.\n" @@ -2476,11 +2477,17 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) "1. \"hexstring\" (string, required) The hex string of the raw transaction\n" "2. options (object, optional)\n" " {\n" - " \"changeAddress\" (string, optional, default pool address) The bitcoin address to receive the change\n" - " \"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 (" + CURRENCY_UNIT + " per KB)\n" + " \"changeAddress\" (string, optional, default pool address) The bitcoin address to receive the change\n" + " \"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 (" + CURRENCY_UNIT + " per KB)\n" + " \"subtractFeeFromOutputs\" (array, optional) A json array of integers.\n" + " The fee will be equally deducted from the amount of each specified output.\n" + " The outputs are specified by their zero-based index, before any change output is added.\n" + " Those recipients will receive less bitcoins than you enter in their corresponding amount field.\n" + " If no outputs are specified here, the sender pays the fee.\n" + " [vout_index,...]\n" " }\n" " for backward compatibility: passing in a true instead of an object will result in {\"includeWatching\":true}\n" "\nResult:\n" @@ -2509,6 +2516,8 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) bool lockUnspents = false; CFeeRate feeRate = CFeeRate(0); bool overrideEstimatedFeerate = false; + UniValue subtractFeeFromOutputs; + set<int> setSubtractFeeFromOutputs; if (request.params.size() > 1) { if (request.params[1].type() == UniValue::VBOOL) { @@ -2527,6 +2536,7 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) {"includeWatching", UniValueType(UniValue::VBOOL)}, {"lockUnspents", UniValueType(UniValue::VBOOL)}, {"feeRate", UniValueType()}, // will be checked below + {"subtractFeeFromOutputs", UniValueType(UniValue::VARR)}, }, true, true); @@ -2553,6 +2563,9 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) feeRate = CFeeRate(AmountFromValue(options["feeRate"])); overrideEstimatedFeerate = true; } + + if (options.exists("subtractFeeFromOutputs")) + subtractFeeFromOutputs = options["subtractFeeFromOutputs"].get_array(); } } @@ -2567,10 +2580,21 @@ UniValue fundrawtransaction(const JSONRPCRequest& request) if (changePosition != -1 && (changePosition < 0 || (unsigned int)changePosition > tx.vout.size())) throw JSONRPCError(RPC_INVALID_PARAMETER, "changePosition out of bounds"); + for (unsigned int idx = 0; idx < subtractFeeFromOutputs.size(); idx++) { + int pos = subtractFeeFromOutputs[idx].get_int(); + if (setSubtractFeeFromOutputs.count(pos)) + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid parameter, duplicated position: %d", pos)); + if (pos < 0) + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid parameter, negative position: %d", pos)); + if (pos >= int(tx.vout.size())) + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid parameter, position too large: %d", pos)); + setSubtractFeeFromOutputs.insert(pos); + } + CAmount nFeeOut; string strFailReason; - if(!pwalletMain->FundTransaction(tx, nFeeOut, overrideEstimatedFeerate, feeRate, changePosition, strFailReason, includeWatching, lockUnspents, changeAddress)) + if(!pwalletMain->FundTransaction(tx, nFeeOut, overrideEstimatedFeerate, feeRate, changePosition, strFailReason, includeWatching, lockUnspents, setSubtractFeeFromOutputs, changeAddress)) throw JSONRPCError(RPC_INTERNAL_ERROR, strFailReason); UniValue result(UniValue::VOBJ); diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index 6269b4521b..b243ee19bf 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -2181,14 +2181,15 @@ bool CWallet::SelectCoins(const vector<COutput>& vAvailableCoins, const CAmount& return res; } -bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const CTxDestination& destChange) +bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, const CTxDestination& destChange) { vector<CRecipient> vecSend; // Turn the txout set into a CRecipient vector - BOOST_FOREACH(const CTxOut& txOut, tx.vout) + for (size_t idx = 0; idx < tx.vout.size(); idx++) { - CRecipient recipient = {txOut.scriptPubKey, txOut.nValue, false}; + const CTxOut& txOut = tx.vout[idx]; + CRecipient recipient = {txOut.scriptPubKey, txOut.nValue, setSubtractFeeFromOutputs.count(idx) == 1}; vecSend.push_back(recipient); } @@ -2210,6 +2211,10 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool ov if (nChangePosInOut != -1) tx.vout.insert(tx.vout.begin() + nChangePosInOut, wtx.tx->vout[nChangePosInOut]); + // Copy output sizes from new transaction; they may have had the fee subtracted from them + for (unsigned int idx = 0; idx < tx.vout.size(); idx++) + tx.vout[idx].nValue = wtx.tx->vout[idx].nValue; + // Add new txins (keeping original txin scriptSig/order) BOOST_FOREACH(const CTxIn& txin, wtx.tx->vin) { diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index f7103b6a80..3a809174f3 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -772,7 +772,7 @@ public: * Insert additional inputs into the transaction by * calling CreateTransaction(); */ - bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const CTxDestination& destChange = CNoDestination()); + bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, const CTxDestination& destChange = CNoDestination()); /** * Create a new transaction paying the recipients with a set of coins |