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Diffstat (limited to 'src/wallet/rpc/spend.cpp')
| -rw-r--r-- | src/wallet/rpc/spend.cpp | 1369 |
1 files changed, 1369 insertions, 0 deletions
diff --git a/src/wallet/rpc/spend.cpp b/src/wallet/rpc/spend.cpp new file mode 100644 index 0000000000..978174b340 --- /dev/null +++ b/src/wallet/rpc/spend.cpp @@ -0,0 +1,1369 @@ +// Copyright (c) 2011-2021 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <core_io.h> +#include <key_io.h> +#include <policy/policy.h> +#include <rpc/rawtransaction_util.h> +#include <rpc/util.h> +#include <util/fees.h> +#include <util/translation.h> +#include <util/vector.h> +#include <wallet/coincontrol.h> +#include <wallet/feebumper.h> +#include <wallet/rpc/util.h> +#include <wallet/spend.h> +#include <wallet/wallet.h> + +#include <univalue.h> + + +static void ParseRecipients(const UniValue& address_amounts, const UniValue& subtract_fee_outputs, std::vector<CRecipient> &recipients) { + std::set<CTxDestination> destinations; + int i = 0; + for (const std::string& address: address_amounts.getKeys()) { + CTxDestination dest = DecodeDestination(address); + if (!IsValidDestination(dest)) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Bitcoin address: ") + address); + } + + if (destinations.count(dest)) { + throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + address); + } + destinations.insert(dest); + + CScript script_pub_key = GetScriptForDestination(dest); + CAmount amount = AmountFromValue(address_amounts[i++]); + + bool subtract_fee = false; + for (unsigned int idx = 0; idx < subtract_fee_outputs.size(); idx++) { + const UniValue& addr = subtract_fee_outputs[idx]; + if (addr.get_str() == address) { + subtract_fee = true; + } + } + + CRecipient recipient = {script_pub_key, amount, subtract_fee}; + recipients.push_back(recipient); + } +} + +UniValue SendMoney(CWallet& wallet, const CCoinControl &coin_control, std::vector<CRecipient> &recipients, mapValue_t map_value, bool verbose) +{ + EnsureWalletIsUnlocked(wallet); + + // This function is only used by sendtoaddress and sendmany. + // This should always try to sign, if we don't have private keys, don't try to do anything here. + if (wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) { + throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet"); + } + + // Shuffle recipient list + std::shuffle(recipients.begin(), recipients.end(), FastRandomContext()); + + // Send + CAmount nFeeRequired = 0; + int nChangePosRet = -1; + bilingual_str error; + CTransactionRef tx; + FeeCalculation fee_calc_out; + const bool fCreated = CreateTransaction(wallet, recipients, tx, nFeeRequired, nChangePosRet, error, coin_control, fee_calc_out, true); + if (!fCreated) { + throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, error.original); + } + wallet.CommitTransaction(tx, std::move(map_value), {} /* orderForm */); + if (verbose) { + UniValue entry(UniValue::VOBJ); + entry.pushKV("txid", tx->GetHash().GetHex()); + entry.pushKV("fee_reason", StringForFeeReason(fee_calc_out.reason)); + return entry; + } + return tx->GetHash().GetHex(); +} + + +/** + * Update coin control with fee estimation based on the given parameters + * + * @param[in] wallet Wallet reference + * @param[in,out] cc Coin control to be updated + * @param[in] conf_target UniValue integer; confirmation target in blocks, values between 1 and 1008 are valid per policy/fees.h; + * @param[in] estimate_mode UniValue string; fee estimation mode, valid values are "unset", "economical" or "conservative"; + * @param[in] fee_rate UniValue real; fee rate in sat/vB; + * if present, both conf_target and estimate_mode must either be null, or "unset" + * @param[in] override_min_fee bool; whether to set fOverrideFeeRate to true to disable minimum fee rate checks and instead + * verify only that fee_rate is greater than 0 + * @throws a JSONRPCError if conf_target, estimate_mode, or fee_rate contain invalid values or are in conflict + */ +static void SetFeeEstimateMode(const CWallet& wallet, CCoinControl& cc, const UniValue& conf_target, const UniValue& estimate_mode, const UniValue& fee_rate, bool override_min_fee) +{ + if (!fee_rate.isNull()) { + if (!conf_target.isNull()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both conf_target and fee_rate. Please provide either a confirmation target in blocks for automatic fee estimation, or an explicit fee rate."); + } + if (!estimate_mode.isNull() && estimate_mode.get_str() != "unset") { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both estimate_mode and fee_rate"); + } + // Fee rates in sat/vB cannot represent more than 3 significant digits. + cc.m_feerate = CFeeRate{AmountFromValue(fee_rate, /* decimals */ 3)}; + if (override_min_fee) cc.fOverrideFeeRate = true; + // Default RBF to true for explicit fee_rate, if unset. + if (!cc.m_signal_bip125_rbf) cc.m_signal_bip125_rbf = true; + return; + } + if (!estimate_mode.isNull() && !FeeModeFromString(estimate_mode.get_str(), cc.m_fee_mode)) { + throw JSONRPCError(RPC_INVALID_PARAMETER, InvalidEstimateModeErrorMessage()); + } + if (!conf_target.isNull()) { + cc.m_confirm_target = ParseConfirmTarget(conf_target, wallet.chain().estimateMaxBlocks()); + } +} + +RPCHelpMan sendtoaddress() +{ + return RPCHelpMan{"sendtoaddress", + "\nSend an amount to a given address." + + HELP_REQUIRING_PASSPHRASE, + { + {"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The bitcoin address to send to."}, + {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "The amount in " + CURRENCY_UNIT + " to send. eg 0.1"}, + {"comment", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG, "A comment used to store what the transaction is for.\n" + "This is not part of the transaction, just kept in your wallet."}, + {"comment_to", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG, "A comment to store the name of the person or organization\n" + "to which you're sending the transaction. This is not part of the \n" + "transaction, just kept in your wallet."}, + {"subtractfeefromamount", RPCArg::Type::BOOL, RPCArg::Default{false}, "The fee will be deducted from the amount being sent.\n" + "The recipient will receive less bitcoins than you enter in the amount field."}, + {"replaceable", RPCArg::Type::BOOL, RPCArg::DefaultHint{"wallet default"}, "Allow this transaction to be replaced by a transaction with higher fees via BIP 125"}, + {"conf_target", RPCArg::Type::NUM, RPCArg::DefaultHint{"wallet -txconfirmtarget"}, "Confirmation target in blocks"}, + {"estimate_mode", RPCArg::Type::STR, RPCArg::Default{"unset"}, std::string() + "The fee estimate mode, must be one of (case insensitive):\n" + " \"" + FeeModes("\"\n\"") + "\""}, + {"avoid_reuse", RPCArg::Type::BOOL, RPCArg::Default{true}, "(only available if avoid_reuse wallet flag is set) Avoid spending from dirty addresses; addresses are considered\n" + "dirty if they have previously been used in a transaction. If true, this also activates avoidpartialspends, grouping outputs by their addresses."}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "If true, return extra information about the transaction."}, + }, + { + RPCResult{"if verbose is not set or set to false", + RPCResult::Type::STR_HEX, "txid", "The transaction id." + }, + RPCResult{"if verbose is set to true", + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR_HEX, "txid", "The transaction id."}, + {RPCResult::Type::STR, "fee_reason", "The transaction fee reason."} + }, + }, + }, + RPCExamples{ + "\nSend 0.1 BTC\n" + + HelpExampleCli("sendtoaddress", "\"" + EXAMPLE_ADDRESS[0] + "\" 0.1") + + "\nSend 0.1 BTC with a confirmation target of 6 blocks in economical fee estimate mode using positional arguments\n" + + HelpExampleCli("sendtoaddress", "\"" + EXAMPLE_ADDRESS[0] + "\" 0.1 \"donation\" \"sean's outpost\" false true 6 economical") + + "\nSend 0.1 BTC with a fee rate of 1.1 " + CURRENCY_ATOM + "/vB, subtract fee from amount, BIP125-replaceable, using positional arguments\n" + + HelpExampleCli("sendtoaddress", "\"" + EXAMPLE_ADDRESS[0] + "\" 0.1 \"drinks\" \"room77\" true true null \"unset\" null 1.1") + + "\nSend 0.2 BTC with a confirmation target of 6 blocks in economical fee estimate mode using named arguments\n" + + HelpExampleCli("-named sendtoaddress", "address=\"" + EXAMPLE_ADDRESS[0] + "\" amount=0.2 conf_target=6 estimate_mode=\"economical\"") + + "\nSend 0.5 BTC with a fee rate of 25 " + CURRENCY_ATOM + "/vB using named arguments\n" + + HelpExampleCli("-named sendtoaddress", "address=\"" + EXAMPLE_ADDRESS[0] + "\" amount=0.5 fee_rate=25") + + HelpExampleCli("-named sendtoaddress", "address=\"" + EXAMPLE_ADDRESS[0] + "\" amount=0.5 fee_rate=25 subtractfeefromamount=false replaceable=true avoid_reuse=true comment=\"2 pizzas\" comment_to=\"jeremy\" verbose=true") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + pwallet->BlockUntilSyncedToCurrentChain(); + + LOCK(pwallet->cs_wallet); + + // Wallet comments + mapValue_t mapValue; + if (!request.params[2].isNull() && !request.params[2].get_str().empty()) + mapValue["comment"] = request.params[2].get_str(); + if (!request.params[3].isNull() && !request.params[3].get_str().empty()) + mapValue["to"] = request.params[3].get_str(); + + bool fSubtractFeeFromAmount = false; + if (!request.params[4].isNull()) { + fSubtractFeeFromAmount = request.params[4].get_bool(); + } + + CCoinControl coin_control; + if (!request.params[5].isNull()) { + coin_control.m_signal_bip125_rbf = request.params[5].get_bool(); + } + + coin_control.m_avoid_address_reuse = GetAvoidReuseFlag(*pwallet, request.params[8]); + // We also enable partial spend avoidance if reuse avoidance is set. + coin_control.m_avoid_partial_spends |= coin_control.m_avoid_address_reuse; + + SetFeeEstimateMode(*pwallet, coin_control, /* conf_target */ request.params[6], /* estimate_mode */ request.params[7], /* fee_rate */ request.params[9], /* override_min_fee */ false); + + EnsureWalletIsUnlocked(*pwallet); + + UniValue address_amounts(UniValue::VOBJ); + const std::string address = request.params[0].get_str(); + address_amounts.pushKV(address, request.params[1]); + UniValue subtractFeeFromAmount(UniValue::VARR); + if (fSubtractFeeFromAmount) { + subtractFeeFromAmount.push_back(address); + } + + std::vector<CRecipient> recipients; + ParseRecipients(address_amounts, subtractFeeFromAmount, recipients); + const bool verbose{request.params[10].isNull() ? false : request.params[10].get_bool()}; + + return SendMoney(*pwallet, coin_control, recipients, mapValue, verbose); +}, + }; +} + +RPCHelpMan sendmany() +{ + return RPCHelpMan{"sendmany", + "\nSend multiple times. Amounts are double-precision floating point numbers." + + HELP_REQUIRING_PASSPHRASE, + { + {"dummy", RPCArg::Type::STR, RPCArg::Optional::NO, "Must be set to \"\" for backwards compatibility.", "\"\""}, + {"amounts", RPCArg::Type::OBJ_USER_KEYS, RPCArg::Optional::NO, "The addresses and amounts", + { + {"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "The bitcoin address is the key, the numeric amount (can be string) in " + CURRENCY_UNIT + " is the value"}, + }, + }, + {"minconf", RPCArg::Type::NUM, RPCArg::Optional::OMITTED_NAMED_ARG, "Ignored dummy value"}, + {"comment", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG, "A comment"}, + {"subtractfeefrom", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "The addresses.\n" + "The fee will be equally deducted from the amount of each selected address.\n" + "Those recipients will receive less bitcoins than you enter in their corresponding amount field.\n" + "If no addresses are specified here, the sender pays the fee.", + { + {"address", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "Subtract fee from this address"}, + }, + }, + {"replaceable", RPCArg::Type::BOOL, RPCArg::DefaultHint{"wallet default"}, "Allow this transaction to be replaced by a transaction with higher fees via BIP 125"}, + {"conf_target", RPCArg::Type::NUM, RPCArg::DefaultHint{"wallet -txconfirmtarget"}, "Confirmation target in blocks"}, + {"estimate_mode", RPCArg::Type::STR, RPCArg::Default{"unset"}, std::string() + "The fee estimate mode, must be one of (case insensitive):\n" + " \"" + FeeModes("\"\n\"") + "\""}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "If true, return extra infomration about the transaction."}, + }, + { + RPCResult{"if verbose is not set or set to false", + RPCResult::Type::STR_HEX, "txid", "The transaction id for the send. Only 1 transaction is created regardless of\n" + "the number of addresses." + }, + RPCResult{"if verbose is set to true", + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR_HEX, "txid", "The transaction id for the send. Only 1 transaction is created regardless of\n" + "the number of addresses."}, + {RPCResult::Type::STR, "fee_reason", "The transaction fee reason."} + }, + }, + }, + RPCExamples{ + "\nSend two amounts to two different addresses:\n" + + HelpExampleCli("sendmany", "\"\" \"{\\\"" + EXAMPLE_ADDRESS[0] + "\\\":0.01,\\\"" + EXAMPLE_ADDRESS[1] + "\\\":0.02}\"") + + "\nSend two amounts to two different addresses setting the confirmation and comment:\n" + + HelpExampleCli("sendmany", "\"\" \"{\\\"" + EXAMPLE_ADDRESS[0] + "\\\":0.01,\\\"" + EXAMPLE_ADDRESS[1] + "\\\":0.02}\" 6 \"testing\"") + + "\nSend two amounts to two different addresses, subtract fee from amount:\n" + + HelpExampleCli("sendmany", "\"\" \"{\\\"" + EXAMPLE_ADDRESS[0] + "\\\":0.01,\\\"" + EXAMPLE_ADDRESS[1] + "\\\":0.02}\" 1 \"\" \"[\\\"" + EXAMPLE_ADDRESS[0] + "\\\",\\\"" + EXAMPLE_ADDRESS[1] + "\\\"]\"") + + "\nAs a JSON-RPC call\n" + + HelpExampleRpc("sendmany", "\"\", {\"" + EXAMPLE_ADDRESS[0] + "\":0.01,\"" + EXAMPLE_ADDRESS[1] + "\":0.02}, 6, \"testing\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + pwallet->BlockUntilSyncedToCurrentChain(); + + LOCK(pwallet->cs_wallet); + + if (!request.params[0].isNull() && !request.params[0].get_str().empty()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Dummy value must be set to \"\""); + } + UniValue sendTo = request.params[1].get_obj(); + + mapValue_t mapValue; + if (!request.params[3].isNull() && !request.params[3].get_str().empty()) + mapValue["comment"] = request.params[3].get_str(); + + UniValue subtractFeeFromAmount(UniValue::VARR); + if (!request.params[4].isNull()) + subtractFeeFromAmount = request.params[4].get_array(); + + CCoinControl coin_control; + if (!request.params[5].isNull()) { + coin_control.m_signal_bip125_rbf = request.params[5].get_bool(); + } + + SetFeeEstimateMode(*pwallet, coin_control, /* conf_target */ request.params[6], /* estimate_mode */ request.params[7], /* fee_rate */ request.params[8], /* override_min_fee */ false); + + std::vector<CRecipient> recipients; + ParseRecipients(sendTo, subtractFeeFromAmount, recipients); + const bool verbose{request.params[9].isNull() ? false : request.params[9].get_bool()}; + + return SendMoney(*pwallet, coin_control, recipients, std::move(mapValue), verbose); +}, + }; +} + +RPCHelpMan settxfee() +{ + return RPCHelpMan{"settxfee", + "\nSet the transaction fee rate in " + CURRENCY_UNIT + "/kvB for this wallet. Overrides the global -paytxfee command line parameter.\n" + "Can be deactivated by passing 0 as the fee. In that case automatic fee selection will be used by default.\n", + { + {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "The transaction fee rate in " + CURRENCY_UNIT + "/kvB"}, + }, + RPCResult{ + RPCResult::Type::BOOL, "", "Returns true if successful" + }, + RPCExamples{ + HelpExampleCli("settxfee", "0.00001") + + HelpExampleRpc("settxfee", "0.00001") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + LOCK(pwallet->cs_wallet); + + CAmount nAmount = AmountFromValue(request.params[0]); + CFeeRate tx_fee_rate(nAmount, 1000); + CFeeRate max_tx_fee_rate(pwallet->m_default_max_tx_fee, 1000); + if (tx_fee_rate == CFeeRate(0)) { + // automatic selection + } else if (tx_fee_rate < pwallet->chain().relayMinFee()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("txfee cannot be less than min relay tx fee (%s)", pwallet->chain().relayMinFee().ToString())); + } else if (tx_fee_rate < pwallet->m_min_fee) { + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("txfee cannot be less than wallet min fee (%s)", pwallet->m_min_fee.ToString())); + } else if (tx_fee_rate > max_tx_fee_rate) { + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("txfee cannot be more than wallet max tx fee (%s)", max_tx_fee_rate.ToString())); + } + + pwallet->m_pay_tx_fee = tx_fee_rate; + return true; +}, + }; +} + + +// Only includes key documentation where the key is snake_case in all RPC methods. MixedCase keys can be added later. +static std::vector<RPCArg> FundTxDoc() +{ + return { + {"conf_target", RPCArg::Type::NUM, RPCArg::DefaultHint{"wallet -txconfirmtarget"}, "Confirmation target in blocks"}, + {"estimate_mode", RPCArg::Type::STR, RPCArg::Default{"unset"}, std::string() + "The fee estimate mode, must be one of (case insensitive):\n" + " \"" + FeeModes("\"\n\"") + "\""}, + {"replaceable", RPCArg::Type::BOOL, RPCArg::DefaultHint{"wallet default"}, "Marks this transaction as BIP125-replaceable.\n" + "Allows this transaction to be replaced by a transaction with higher fees"}, + {"solving_data", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "Keys and scripts needed for producing a final transaction with a dummy signature.\n" + "Used for fee estimation during coin selection.", + { + {"pubkeys", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "Public keys involved in this transaction.", + { + {"pubkey", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A public key"}, + }}, + {"scripts", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "Scripts involved in this transaction.", + { + {"script", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A script"}, + }}, + {"descriptors", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "Descriptors that provide solving data for this transaction.", + { + {"descriptor", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "A descriptor"}, + }}, + }}, + }; +} + +void FundTransaction(CWallet& wallet, CMutableTransaction& tx, CAmount& fee_out, int& change_position, const UniValue& options, CCoinControl& coinControl, bool override_min_fee) +{ + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + wallet.BlockUntilSyncedToCurrentChain(); + + change_position = -1; + bool lockUnspents = false; + UniValue subtractFeeFromOutputs; + std::set<int> setSubtractFeeFromOutputs; + + if (!options.isNull()) { + if (options.type() == UniValue::VBOOL) { + // backward compatibility bool only fallback + coinControl.fAllowWatchOnly = options.get_bool(); + } + else { + RPCTypeCheckArgument(options, UniValue::VOBJ); + RPCTypeCheckObj(options, + { + {"add_inputs", UniValueType(UniValue::VBOOL)}, + {"include_unsafe", UniValueType(UniValue::VBOOL)}, + {"add_to_wallet", UniValueType(UniValue::VBOOL)}, + {"changeAddress", UniValueType(UniValue::VSTR)}, + {"change_address", UniValueType(UniValue::VSTR)}, + {"changePosition", UniValueType(UniValue::VNUM)}, + {"change_position", UniValueType(UniValue::VNUM)}, + {"change_type", UniValueType(UniValue::VSTR)}, + {"includeWatching", UniValueType(UniValue::VBOOL)}, + {"include_watching", UniValueType(UniValue::VBOOL)}, + {"inputs", UniValueType(UniValue::VARR)}, + {"lockUnspents", UniValueType(UniValue::VBOOL)}, + {"lock_unspents", UniValueType(UniValue::VBOOL)}, + {"locktime", UniValueType(UniValue::VNUM)}, + {"fee_rate", UniValueType()}, // will be checked by AmountFromValue() in SetFeeEstimateMode() + {"feeRate", UniValueType()}, // will be checked by AmountFromValue() below + {"psbt", UniValueType(UniValue::VBOOL)}, + {"solving_data", UniValueType(UniValue::VOBJ)}, + {"subtractFeeFromOutputs", UniValueType(UniValue::VARR)}, + {"subtract_fee_from_outputs", UniValueType(UniValue::VARR)}, + {"replaceable", UniValueType(UniValue::VBOOL)}, + {"conf_target", UniValueType(UniValue::VNUM)}, + {"estimate_mode", UniValueType(UniValue::VSTR)}, + }, + true, true); + + if (options.exists("add_inputs") ) { + coinControl.m_add_inputs = options["add_inputs"].get_bool(); + } + + if (options.exists("changeAddress") || options.exists("change_address")) { + const std::string change_address_str = (options.exists("change_address") ? options["change_address"] : options["changeAddress"]).get_str(); + CTxDestination dest = DecodeDestination(change_address_str); + + if (!IsValidDestination(dest)) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Change address must be a valid bitcoin address"); + } + + coinControl.destChange = dest; + } + + if (options.exists("changePosition") || options.exists("change_position")) { + change_position = (options.exists("change_position") ? options["change_position"] : options["changePosition"]).get_int(); + } + + if (options.exists("change_type")) { + if (options.exists("changeAddress") || options.exists("change_address")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both change address and address type options"); + } + if (std::optional<OutputType> parsed = ParseOutputType(options["change_type"].get_str())) { + coinControl.m_change_type.emplace(parsed.value()); + } else { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Unknown change type '%s'", options["change_type"].get_str())); + } + } + + const UniValue include_watching_option = options.exists("include_watching") ? options["include_watching"] : options["includeWatching"]; + coinControl.fAllowWatchOnly = ParseIncludeWatchonly(include_watching_option, wallet); + + if (options.exists("lockUnspents") || options.exists("lock_unspents")) { + lockUnspents = (options.exists("lock_unspents") ? options["lock_unspents"] : options["lockUnspents"]).get_bool(); + } + + if (options.exists("include_unsafe")) { + coinControl.m_include_unsafe_inputs = options["include_unsafe"].get_bool(); + } + + if (options.exists("feeRate")) { + if (options.exists("fee_rate")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both fee_rate (" + CURRENCY_ATOM + "/vB) and feeRate (" + CURRENCY_UNIT + "/kvB)"); + } + if (options.exists("conf_target")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both conf_target and feeRate. Please provide either a confirmation target in blocks for automatic fee estimation, or an explicit fee rate."); + } + if (options.exists("estimate_mode")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both estimate_mode and feeRate"); + } + coinControl.m_feerate = CFeeRate(AmountFromValue(options["feeRate"])); + coinControl.fOverrideFeeRate = true; + } + + if (options.exists("subtractFeeFromOutputs") || options.exists("subtract_fee_from_outputs") ) + subtractFeeFromOutputs = (options.exists("subtract_fee_from_outputs") ? options["subtract_fee_from_outputs"] : options["subtractFeeFromOutputs"]).get_array(); + + if (options.exists("replaceable")) { + coinControl.m_signal_bip125_rbf = options["replaceable"].get_bool(); + } + SetFeeEstimateMode(wallet, coinControl, options["conf_target"], options["estimate_mode"], options["fee_rate"], override_min_fee); + } + } else { + // if options is null and not a bool + coinControl.fAllowWatchOnly = ParseIncludeWatchonly(NullUniValue, wallet); + } + + if (options.exists("solving_data")) { + const UniValue solving_data = options["solving_data"].get_obj(); + if (solving_data.exists("pubkeys")) { + for (const UniValue& pk_univ : solving_data["pubkeys"].get_array().getValues()) { + const std::string& pk_str = pk_univ.get_str(); + if (!IsHex(pk_str)) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("'%s' is not hex", pk_str)); + } + const std::vector<unsigned char> data(ParseHex(pk_str)); + const CPubKey pubkey(data.begin(), data.end()); + if (!pubkey.IsFullyValid()) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("'%s' is not a valid public key", pk_str)); + } + coinControl.m_external_provider.pubkeys.emplace(pubkey.GetID(), pubkey); + // Add witness script for pubkeys + const CScript wit_script = GetScriptForDestination(WitnessV0KeyHash(pubkey)); + coinControl.m_external_provider.scripts.emplace(CScriptID(wit_script), wit_script); + } + } + + if (solving_data.exists("scripts")) { + for (const UniValue& script_univ : solving_data["scripts"].get_array().getValues()) { + const std::string& script_str = script_univ.get_str(); + if (!IsHex(script_str)) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("'%s' is not hex", script_str)); + } + std::vector<unsigned char> script_data(ParseHex(script_str)); + const CScript script(script_data.begin(), script_data.end()); + coinControl.m_external_provider.scripts.emplace(CScriptID(script), script); + } + } + + if (solving_data.exists("descriptors")) { + for (const UniValue& desc_univ : solving_data["descriptors"].get_array().getValues()) { + const std::string& desc_str = desc_univ.get_str(); + FlatSigningProvider desc_out; + std::string error; + std::vector<CScript> scripts_temp; + std::unique_ptr<Descriptor> desc = Parse(desc_str, desc_out, error, true); + if (!desc) { + throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Unable to parse descriptor '%s': %s", desc_str, error)); + } + desc->Expand(0, desc_out, scripts_temp, desc_out); + coinControl.m_external_provider = Merge(coinControl.m_external_provider, desc_out); + } + } + } + + if (tx.vout.size() == 0) + throw JSONRPCError(RPC_INVALID_PARAMETER, "TX must have at least one output"); + + if (change_position != -1 && (change_position < 0 || (unsigned int)change_position > 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); + } + + // Fetch specified UTXOs from the UTXO set to get the scriptPubKeys and values of the outputs being selected + // and to match with the given solving_data. Only used for non-wallet outputs. + std::map<COutPoint, Coin> coins; + for (const CTxIn& txin : tx.vin) { + coins[txin.prevout]; // Create empty map entry keyed by prevout. + } + wallet.chain().findCoins(coins); + for (const auto& coin : coins) { + if (!coin.second.out.IsNull()) { + coinControl.SelectExternal(coin.first, coin.second.out); + } + } + + bilingual_str error; + + if (!FundTransaction(wallet, tx, fee_out, change_position, error, lockUnspents, setSubtractFeeFromOutputs, coinControl)) { + throw JSONRPCError(RPC_WALLET_ERROR, error.original); + } +} + +RPCHelpMan fundrawtransaction() +{ + return RPCHelpMan{"fundrawtransaction", + "\nIf the transaction has no inputs, they will be automatically selected to meet its out value.\n" + "It 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 signrawtransactionwithkey\n" + "or signrawtransactionwithwallet for that.\n" + "All existing inputs must either have their previous output transaction be in the wallet\n" + "or be in the UTXO set. Solving data must be provided for non-wallet inputs.\n" + "Note that all inputs selected must be of standard form and P2SH scripts must be\n" + "in the wallet using importaddress or addmultisigaddress (to calculate fees).\n" + "You can see whether this is the case by checking the \"solvable\" field in the listunspent output.\n" + "Only pay-to-pubkey, multisig, and P2SH versions thereof are currently supported for watch-only\n", + { + {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex string of the raw transaction"}, + {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "for backward compatibility: passing in a true instead of an object will result in {\"includeWatching\":true}", + Cat<std::vector<RPCArg>>( + { + {"add_inputs", RPCArg::Type::BOOL, RPCArg::Default{true}, "For a transaction with existing inputs, automatically include more if they are not enough."}, + {"include_unsafe", RPCArg::Type::BOOL, RPCArg::Default{false}, "Include inputs that are not safe to spend (unconfirmed transactions from outside keys and unconfirmed replacement transactions).\n" + "Warning: the resulting transaction may become invalid if one of the unsafe inputs disappears.\n" + "If that happens, you will need to fund the transaction with different inputs and republish it."}, + {"changeAddress", RPCArg::Type::STR, RPCArg::DefaultHint{"pool address"}, "The bitcoin address to receive the change"}, + {"changePosition", RPCArg::Type::NUM, RPCArg::DefaultHint{"random"}, "The index of the change output"}, + {"change_type", RPCArg::Type::STR, RPCArg::DefaultHint{"set by -changetype"}, "The output type to use. Only valid if changeAddress is not specified. Options are \"legacy\", \"p2sh-segwit\", and \"bech32\"."}, + {"includeWatching", RPCArg::Type::BOOL, RPCArg::DefaultHint{"true for watch-only wallets, otherwise false"}, "Also select inputs which are watch only.\n" + "Only solvable inputs can be used. Watch-only destinations are solvable if the public key and/or output script was imported,\n" + "e.g. with 'importpubkey' or 'importmulti' with the 'pubkeys' or 'desc' field."}, + {"lockUnspents", RPCArg::Type::BOOL, RPCArg::Default{false}, "Lock selected unspent outputs"}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"feeRate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_UNIT + "/kvB."}, + {"subtractFeeFromOutputs", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "The integers.\n" + "The fee will be equally deducted from the amount of each specified output.\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.", + { + {"vout_index", RPCArg::Type::NUM, RPCArg::Optional::OMITTED, "The zero-based output index, before a change output is added."}, + }, + }, + }, + FundTxDoc()), + "options"}, + {"iswitness", RPCArg::Type::BOOL, RPCArg::DefaultHint{"depends on heuristic tests"}, "Whether the transaction hex is a serialized witness transaction.\n" + "If iswitness is not present, heuristic tests will be used in decoding.\n" + "If true, only witness deserialization will be tried.\n" + "If false, only non-witness deserialization will be tried.\n" + "This boolean should reflect whether the transaction has inputs\n" + "(e.g. fully valid, or on-chain transactions), if known by the caller." + }, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR_HEX, "hex", "The resulting raw transaction (hex-encoded string)"}, + {RPCResult::Type::STR_AMOUNT, "fee", "Fee in " + CURRENCY_UNIT + " the resulting transaction pays"}, + {RPCResult::Type::NUM, "changepos", "The position of the added change output, or -1"}, + } + }, + RPCExamples{ + "\nCreate a transaction with no inputs\n" + + HelpExampleCli("createrawtransaction", "\"[]\" \"{\\\"myaddress\\\":0.01}\"") + + "\nAdd sufficient unsigned inputs to meet the output value\n" + + HelpExampleCli("fundrawtransaction", "\"rawtransactionhex\"") + + "\nSign the transaction\n" + + HelpExampleCli("signrawtransactionwithwallet", "\"fundedtransactionhex\"") + + "\nSend the transaction\n" + + HelpExampleCli("sendrawtransaction", "\"signedtransactionhex\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + RPCTypeCheck(request.params, {UniValue::VSTR, UniValueType(), UniValue::VBOOL}); + + // parse hex string from parameter + CMutableTransaction tx; + bool try_witness = request.params[2].isNull() ? true : request.params[2].get_bool(); + bool try_no_witness = request.params[2].isNull() ? true : !request.params[2].get_bool(); + if (!DecodeHexTx(tx, request.params[0].get_str(), try_no_witness, try_witness)) { + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed"); + } + + CAmount fee; + int change_position; + CCoinControl coin_control; + // Automatically select (additional) coins. Can be overridden by options.add_inputs. + coin_control.m_add_inputs = true; + FundTransaction(*pwallet, tx, fee, change_position, request.params[1], coin_control, /* override_min_fee */ true); + + UniValue result(UniValue::VOBJ); + result.pushKV("hex", EncodeHexTx(CTransaction(tx))); + result.pushKV("fee", ValueFromAmount(fee)); + result.pushKV("changepos", change_position); + + return result; +}, + }; +} + +RPCHelpMan signrawtransactionwithwallet() +{ + return RPCHelpMan{"signrawtransactionwithwallet", + "\nSign inputs for raw transaction (serialized, hex-encoded).\n" + "The second optional argument (may be null) is an array of previous transaction outputs that\n" + "this transaction depends on but may not yet be in the block chain." + + HELP_REQUIRING_PASSPHRASE, + { + {"hexstring", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction hex string"}, + {"prevtxs", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "The previous dependent transaction outputs", + { + {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"}, + {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"}, + {"scriptPubKey", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "script key"}, + {"redeemScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2SH) redeem script"}, + {"witnessScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2WSH or P2SH-P2WSH) witness script"}, + {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::OMITTED, "(required for Segwit inputs) the amount spent"}, + }, + }, + }, + }, + {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT for Taproot, ALL otherwise"}, "The signature hash type. Must be one of\n" + " \"DEFAULT\"\n" + " \"ALL\"\n" + " \"NONE\"\n" + " \"SINGLE\"\n" + " \"ALL|ANYONECANPAY\"\n" + " \"NONE|ANYONECANPAY\"\n" + " \"SINGLE|ANYONECANPAY\""}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR_HEX, "hex", "The hex-encoded raw transaction with signature(s)"}, + {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"}, + {RPCResult::Type::ARR, "errors", /*optional=*/true, "Script verification errors (if there are any)", + { + {RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR_HEX, "txid", "The hash of the referenced, previous transaction"}, + {RPCResult::Type::NUM, "vout", "The index of the output to spent and used as input"}, + {RPCResult::Type::ARR, "witness", "", + { + {RPCResult::Type::STR_HEX, "witness", ""}, + }}, + {RPCResult::Type::STR_HEX, "scriptSig", "The hex-encoded signature script"}, + {RPCResult::Type::NUM, "sequence", "Script sequence number"}, + {RPCResult::Type::STR, "error", "Verification or signing error related to the input"}, + }}, + }}, + } + }, + RPCExamples{ + HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") + + HelpExampleRpc("signrawtransactionwithwallet", "\"myhex\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + const std::shared_ptr<const CWallet> pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VSTR}, true); + + CMutableTransaction mtx; + if (!DecodeHexTx(mtx, request.params[0].get_str())) { + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed. Make sure the tx has at least one input."); + } + + // Sign the transaction + LOCK(pwallet->cs_wallet); + EnsureWalletIsUnlocked(*pwallet); + + // Fetch previous transactions (inputs): + std::map<COutPoint, Coin> coins; + for (const CTxIn& txin : mtx.vin) { + coins[txin.prevout]; // Create empty map entry keyed by prevout. + } + pwallet->chain().findCoins(coins); + + // Parse the prevtxs array + ParsePrevouts(request.params[1], nullptr, coins); + + int nHashType = ParseSighashString(request.params[2]); + + // Script verification errors + std::map<int, bilingual_str> input_errors; + + bool complete = pwallet->SignTransaction(mtx, coins, nHashType, input_errors); + UniValue result(UniValue::VOBJ); + SignTransactionResultToJSON(mtx, complete, coins, input_errors, result); + return result; +}, + }; +} + +static RPCHelpMan bumpfee_helper(std::string method_name) +{ + const bool want_psbt = method_name == "psbtbumpfee"; + const std::string incremental_fee{CFeeRate(DEFAULT_INCREMENTAL_RELAY_FEE).ToString(FeeEstimateMode::SAT_VB)}; + + return RPCHelpMan{method_name, + "\nBumps the fee of an opt-in-RBF transaction T, replacing it with a new transaction B.\n" + + std::string(want_psbt ? "Returns a PSBT instead of creating and signing a new transaction.\n" : "") + + "An opt-in RBF transaction with the given txid must be in the wallet.\n" + "The command will pay the additional fee by reducing change outputs or adding inputs when necessary.\n" + "It may add a new change output if one does not already exist.\n" + "All inputs in the original transaction will be included in the replacement transaction.\n" + "The command will fail if the wallet or mempool contains a transaction that spends one of T's outputs.\n" + "By default, the new fee will be calculated automatically using the estimatesmartfee RPC.\n" + "The user can specify a confirmation target for estimatesmartfee.\n" + "Alternatively, the user can specify a fee rate in " + CURRENCY_ATOM + "/vB for the new transaction.\n" + "At a minimum, the new fee rate must be high enough to pay an additional new relay fee (incrementalfee\n" + "returned by getnetworkinfo) to enter the node's mempool.\n" + "* WARNING: before version 0.21, fee_rate was in " + CURRENCY_UNIT + "/kvB. As of 0.21, fee_rate is in " + CURRENCY_ATOM + "/vB. *\n", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The txid to be bumped"}, + {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "", + { + {"conf_target", RPCArg::Type::NUM, RPCArg::DefaultHint{"wallet -txconfirmtarget"}, "Confirmation target in blocks\n"}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, + "\nSpecify a fee rate in " + CURRENCY_ATOM + "/vB instead of relying on the built-in fee estimator.\n" + "Must be at least " + incremental_fee + " higher than the current transaction fee rate.\n" + "WARNING: before version 0.21, fee_rate was in " + CURRENCY_UNIT + "/kvB. As of 0.21, fee_rate is in " + CURRENCY_ATOM + "/vB.\n"}, + {"replaceable", RPCArg::Type::BOOL, RPCArg::Default{true}, "Whether the new transaction should still be\n" + "marked bip-125 replaceable. If true, the sequence numbers in the transaction will\n" + "be left unchanged from the original. If false, any input sequence numbers in the\n" + "original transaction that were less than 0xfffffffe will be increased to 0xfffffffe\n" + "so the new transaction will not be explicitly bip-125 replaceable (though it may\n" + "still be replaceable in practice, for example if it has unconfirmed ancestors which\n" + "are replaceable).\n"}, + {"estimate_mode", RPCArg::Type::STR, RPCArg::Default{"unset"}, "The fee estimate mode, must be one of (case insensitive):\n" + "\"" + FeeModes("\"\n\"") + "\""}, + }, + "options"}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", Cat( + want_psbt ? + std::vector<RPCResult>{{RPCResult::Type::STR, "psbt", "The base64-encoded unsigned PSBT of the new transaction."}} : + std::vector<RPCResult>{{RPCResult::Type::STR_HEX, "txid", "The id of the new transaction."}}, + { + {RPCResult::Type::STR_AMOUNT, "origfee", "The fee of the replaced transaction."}, + {RPCResult::Type::STR_AMOUNT, "fee", "The fee of the new transaction."}, + {RPCResult::Type::ARR, "errors", "Errors encountered during processing (may be empty).", + { + {RPCResult::Type::STR, "", ""}, + }}, + }) + }, + RPCExamples{ + "\nBump the fee, get the new transaction\'s " + std::string(want_psbt ? "psbt" : "txid") + "\n" + + HelpExampleCli(method_name, "<txid>") + }, + [want_psbt](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !want_psbt) { + throw JSONRPCError(RPC_WALLET_ERROR, "bumpfee is not available with wallets that have private keys disabled. Use psbtbumpfee instead."); + } + + RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VOBJ}); + uint256 hash(ParseHashV(request.params[0], "txid")); + + CCoinControl coin_control; + coin_control.fAllowWatchOnly = pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS); + // optional parameters + coin_control.m_signal_bip125_rbf = true; + + if (!request.params[1].isNull()) { + UniValue options = request.params[1]; + RPCTypeCheckObj(options, + { + {"confTarget", UniValueType(UniValue::VNUM)}, + {"conf_target", UniValueType(UniValue::VNUM)}, + {"fee_rate", UniValueType()}, // will be checked by AmountFromValue() in SetFeeEstimateMode() + {"replaceable", UniValueType(UniValue::VBOOL)}, + {"estimate_mode", UniValueType(UniValue::VSTR)}, + }, + true, true); + + if (options.exists("confTarget") && options.exists("conf_target")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "confTarget and conf_target options should not both be set. Use conf_target (confTarget is deprecated)."); + } + + auto conf_target = options.exists("confTarget") ? options["confTarget"] : options["conf_target"]; + + if (options.exists("replaceable")) { + coin_control.m_signal_bip125_rbf = options["replaceable"].get_bool(); + } + SetFeeEstimateMode(*pwallet, coin_control, conf_target, options["estimate_mode"], options["fee_rate"], /* override_min_fee */ false); + } + + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + pwallet->BlockUntilSyncedToCurrentChain(); + + LOCK(pwallet->cs_wallet); + + EnsureWalletIsUnlocked(*pwallet); + + + std::vector<bilingual_str> errors; + CAmount old_fee; + CAmount new_fee; + CMutableTransaction mtx; + feebumper::Result res; + // Targeting feerate bump. + res = feebumper::CreateRateBumpTransaction(*pwallet, hash, coin_control, errors, old_fee, new_fee, mtx); + if (res != feebumper::Result::OK) { + switch(res) { + case feebumper::Result::INVALID_ADDRESS_OR_KEY: + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errors[0].original); + break; + case feebumper::Result::INVALID_REQUEST: + throw JSONRPCError(RPC_INVALID_REQUEST, errors[0].original); + break; + case feebumper::Result::INVALID_PARAMETER: + throw JSONRPCError(RPC_INVALID_PARAMETER, errors[0].original); + break; + case feebumper::Result::WALLET_ERROR: + throw JSONRPCError(RPC_WALLET_ERROR, errors[0].original); + break; + default: + throw JSONRPCError(RPC_MISC_ERROR, errors[0].original); + break; + } + } + + UniValue result(UniValue::VOBJ); + + // For bumpfee, return the new transaction id. + // For psbtbumpfee, return the base64-encoded unsigned PSBT of the new transaction. + if (!want_psbt) { + if (!feebumper::SignTransaction(*pwallet, mtx)) { + throw JSONRPCError(RPC_WALLET_ERROR, "Can't sign transaction."); + } + + uint256 txid; + if (feebumper::CommitTransaction(*pwallet, hash, std::move(mtx), errors, txid) != feebumper::Result::OK) { + throw JSONRPCError(RPC_WALLET_ERROR, errors[0].original); + } + + result.pushKV("txid", txid.GetHex()); + } else { + PartiallySignedTransaction psbtx(mtx); + bool complete = false; + const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false /* sign */, true /* bip32derivs */); + CHECK_NONFATAL(err == TransactionError::OK); + CHECK_NONFATAL(!complete); + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << psbtx; + result.pushKV("psbt", EncodeBase64(ssTx.str())); + } + + result.pushKV("origfee", ValueFromAmount(old_fee)); + result.pushKV("fee", ValueFromAmount(new_fee)); + UniValue result_errors(UniValue::VARR); + for (const bilingual_str& error : errors) { + result_errors.push_back(error.original); + } + result.pushKV("errors", result_errors); + + return result; +}, + }; +} + +RPCHelpMan bumpfee() { return bumpfee_helper("bumpfee"); } +RPCHelpMan psbtbumpfee() { return bumpfee_helper("psbtbumpfee"); } + +RPCHelpMan send() +{ + return RPCHelpMan{"send", + "\nEXPERIMENTAL warning: this call may be changed in future releases.\n" + "\nSend a transaction.\n", + { + {"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The outputs (key-value pairs), where none of the keys are duplicated.\n" + "That is, each address can only appear once and there can only be one 'data' object.\n" + "For convenience, a dictionary, which holds the key-value pairs directly, is also accepted.", + { + {"", RPCArg::Type::OBJ_USER_KEYS, RPCArg::Optional::OMITTED, "", + { + {"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "A key-value pair. The key (string) is the bitcoin address, the value (float or string) is the amount in " + CURRENCY_UNIT + ""}, + }, + }, + {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "", + { + {"data", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "A key-value pair. The key must be \"data\", the value is hex-encoded data"}, + }, + }, + }, + }, + {"conf_target", RPCArg::Type::NUM, RPCArg::DefaultHint{"wallet -txconfirmtarget"}, "Confirmation target in blocks"}, + {"estimate_mode", RPCArg::Type::STR, RPCArg::Default{"unset"}, std::string() + "The fee estimate mode, must be one of (case insensitive):\n" + " \"" + FeeModes("\"\n\"") + "\""}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "", + Cat<std::vector<RPCArg>>( + { + {"add_inputs", RPCArg::Type::BOOL, RPCArg::Default{false}, "If inputs are specified, automatically include more if they are not enough."}, + {"include_unsafe", RPCArg::Type::BOOL, RPCArg::Default{false}, "Include inputs that are not safe to spend (unconfirmed transactions from outside keys and unconfirmed replacement transactions).\n" + "Warning: the resulting transaction may become invalid if one of the unsafe inputs disappears.\n" + "If that happens, you will need to fund the transaction with different inputs and republish it."}, + {"add_to_wallet", RPCArg::Type::BOOL, RPCArg::Default{true}, "When false, returns a serialized transaction which will not be added to the wallet or broadcast"}, + {"change_address", RPCArg::Type::STR_HEX, RPCArg::DefaultHint{"pool address"}, "The bitcoin address to receive the change"}, + {"change_position", RPCArg::Type::NUM, RPCArg::DefaultHint{"random"}, "The index of the change output"}, + {"change_type", RPCArg::Type::STR, RPCArg::DefaultHint{"set by -changetype"}, "The output type to use. Only valid if change_address is not specified. Options are \"legacy\", \"p2sh-segwit\", and \"bech32\"."}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"include_watching", RPCArg::Type::BOOL, RPCArg::DefaultHint{"true for watch-only wallets, otherwise false"}, "Also select inputs which are watch only.\n" + "Only solvable inputs can be used. Watch-only destinations are solvable if the public key and/or output script was imported,\n" + "e.g. with 'importpubkey' or 'importmulti' with the 'pubkeys' or 'desc' field."}, + {"inputs", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "Specify inputs instead of adding them automatically. A JSON array of JSON objects", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"}, + {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"}, + {"sequence", RPCArg::Type::NUM, RPCArg::Optional::NO, "The sequence number"}, + }, + }, + {"locktime", RPCArg::Type::NUM, RPCArg::Default{0}, "Raw locktime. Non-0 value also locktime-activates inputs"}, + {"lock_unspents", RPCArg::Type::BOOL, RPCArg::Default{false}, "Lock selected unspent outputs"}, + {"psbt", RPCArg::Type::BOOL, RPCArg::DefaultHint{"automatic"}, "Always return a PSBT, implies add_to_wallet=false."}, + {"subtract_fee_from_outputs", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "Outputs to subtract the fee from, specified as integer indices.\n" + "The fee will be equally deducted from the amount of each specified output.\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.", + { + {"vout_index", RPCArg::Type::NUM, RPCArg::Optional::OMITTED, "The zero-based output index, before a change output is added."}, + }, + }, + }, + FundTxDoc()), + "options"}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"}, + {RPCResult::Type::STR_HEX, "txid", /*optional=*/true, "The transaction id for the send. Only 1 transaction is created regardless of the number of addresses."}, + {RPCResult::Type::STR_HEX, "hex", /*optional=*/true, "If add_to_wallet is false, the hex-encoded raw transaction with signature(s)"}, + {RPCResult::Type::STR, "psbt", /*optional=*/true, "If more signatures are needed, or if add_to_wallet is false, the base64-encoded (partially) signed transaction"} + } + }, + RPCExamples{"" + "\nSend 0.1 BTC with a confirmation target of 6 blocks in economical fee estimate mode\n" + + HelpExampleCli("send", "'{\"" + EXAMPLE_ADDRESS[0] + "\": 0.1}' 6 economical\n") + + "Send 0.2 BTC with a fee rate of 1.1 " + CURRENCY_ATOM + "/vB using positional arguments\n" + + HelpExampleCli("send", "'{\"" + EXAMPLE_ADDRESS[0] + "\": 0.2}' null \"unset\" 1.1\n") + + "Send 0.2 BTC with a fee rate of 1 " + CURRENCY_ATOM + "/vB using the options argument\n" + + HelpExampleCli("send", "'{\"" + EXAMPLE_ADDRESS[0] + "\": 0.2}' null \"unset\" null '{\"fee_rate\": 1}'\n") + + "Send 0.3 BTC with a fee rate of 25 " + CURRENCY_ATOM + "/vB using named arguments\n" + + HelpExampleCli("-named send", "outputs='{\"" + EXAMPLE_ADDRESS[0] + "\": 0.3}' fee_rate=25\n") + + "Create a transaction that should confirm the next block, with a specific input, and return result without adding to wallet or broadcasting to the network\n" + + HelpExampleCli("send", "'{\"" + EXAMPLE_ADDRESS[0] + "\": 0.1}' 1 economical '{\"add_to_wallet\": false, \"inputs\": [{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\", \"vout\":1}]}'") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue + { + RPCTypeCheck(request.params, { + UniValueType(), // outputs (ARR or OBJ, checked later) + UniValue::VNUM, // conf_target + UniValue::VSTR, // estimate_mode + UniValueType(), // fee_rate, will be checked by AmountFromValue() in SetFeeEstimateMode() + UniValue::VOBJ, // options + }, true + ); + + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + UniValue options{request.params[4].isNull() ? UniValue::VOBJ : request.params[4]}; + if (options.exists("conf_target") || options.exists("estimate_mode")) { + if (!request.params[1].isNull() || !request.params[2].isNull()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Pass conf_target and estimate_mode either as arguments or in the options object, but not both"); + } + } else { + options.pushKV("conf_target", request.params[1]); + options.pushKV("estimate_mode", request.params[2]); + } + if (options.exists("fee_rate")) { + if (!request.params[3].isNull()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Pass the fee_rate either as an argument, or in the options object, but not both"); + } + } else { + options.pushKV("fee_rate", request.params[3]); + } + if (!options["conf_target"].isNull() && (options["estimate_mode"].isNull() || (options["estimate_mode"].get_str() == "unset"))) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Specify estimate_mode"); + } + if (options.exists("feeRate")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use fee_rate (" + CURRENCY_ATOM + "/vB) instead of feeRate"); + } + if (options.exists("changeAddress")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use change_address"); + } + if (options.exists("changePosition")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use change_position"); + } + if (options.exists("includeWatching")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use include_watching"); + } + if (options.exists("lockUnspents")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use lock_unspents"); + } + if (options.exists("subtractFeeFromOutputs")) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Use subtract_fee_from_outputs"); + } + + const bool psbt_opt_in = options.exists("psbt") && options["psbt"].get_bool(); + + CAmount fee; + int change_position; + bool rbf = pwallet->m_signal_rbf; + if (options.exists("replaceable")) { + rbf = options["replaceable"].get_bool(); + } + CMutableTransaction rawTx = ConstructTransaction(options["inputs"], request.params[0], options["locktime"], rbf); + CCoinControl coin_control; + // Automatically select coins, unless at least one is manually selected. Can + // be overridden by options.add_inputs. + coin_control.m_add_inputs = rawTx.vin.size() == 0; + FundTransaction(*pwallet, rawTx, fee, change_position, options, coin_control, /* override_min_fee */ false); + + bool add_to_wallet = true; + if (options.exists("add_to_wallet")) { + add_to_wallet = options["add_to_wallet"].get_bool(); + } + + // Make a blank psbt + PartiallySignedTransaction psbtx(rawTx); + + // First fill transaction with our data without signing, + // so external signers are not asked sign more than once. + bool complete; + pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false, true); + const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, true, false); + if (err != TransactionError::OK) { + throw JSONRPCTransactionError(err); + } + + CMutableTransaction mtx; + complete = FinalizeAndExtractPSBT(psbtx, mtx); + + UniValue result(UniValue::VOBJ); + + if (psbt_opt_in || !complete || !add_to_wallet) { + // Serialize the PSBT + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << psbtx; + result.pushKV("psbt", EncodeBase64(ssTx.str())); + } + + if (complete) { + std::string err_string; + std::string hex = EncodeHexTx(CTransaction(mtx)); + CTransactionRef tx(MakeTransactionRef(std::move(mtx))); + result.pushKV("txid", tx->GetHash().GetHex()); + if (add_to_wallet && !psbt_opt_in) { + pwallet->CommitTransaction(tx, {}, {} /* orderForm */); + } else { + result.pushKV("hex", hex); + } + } + result.pushKV("complete", complete); + + return result; + } + }; +} + +RPCHelpMan walletprocesspsbt() +{ + return RPCHelpMan{"walletprocesspsbt", + "\nUpdate a PSBT with input information from our wallet and then sign inputs\n" + "that we can sign for." + + HELP_REQUIRING_PASSPHRASE, + { + {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction base64 string"}, + {"sign", RPCArg::Type::BOOL, RPCArg::Default{true}, "Also sign the transaction when updating (requires wallet to be unlocked)"}, + {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT for Taproot, ALL otherwise"}, "The signature hash type to sign with if not specified by the PSBT. Must be one of\n" + " \"DEFAULT\"\n" + " \"ALL\"\n" + " \"NONE\"\n" + " \"SINGLE\"\n" + " \"ALL|ANYONECANPAY\"\n" + " \"NONE|ANYONECANPAY\"\n" + " \"SINGLE|ANYONECANPAY\""}, + {"bip32derivs", RPCArg::Type::BOOL, RPCArg::Default{true}, "Include BIP 32 derivation paths for public keys if we know them"}, + {"finalize", RPCArg::Type::BOOL, RPCArg::Default{true}, "Also finalize inputs if possible"}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR, "psbt", "The base64-encoded partially signed transaction"}, + {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"}, + } + }, + RPCExamples{ + HelpExampleCli("walletprocesspsbt", "\"psbt\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + const std::shared_ptr<const CWallet> pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + const CWallet& wallet{*pwallet}; + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + wallet.BlockUntilSyncedToCurrentChain(); + + RPCTypeCheck(request.params, {UniValue::VSTR}); + + // Unserialize the transaction + PartiallySignedTransaction psbtx; + std::string error; + if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) { + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error)); + } + + // Get the sighash type + int nHashType = ParseSighashString(request.params[2]); + + // Fill transaction with our data and also sign + bool sign = request.params[1].isNull() ? true : request.params[1].get_bool(); + bool bip32derivs = request.params[3].isNull() ? true : request.params[3].get_bool(); + bool finalize = request.params[4].isNull() ? true : request.params[4].get_bool(); + bool complete = true; + + if (sign) EnsureWalletIsUnlocked(*pwallet); + + const TransactionError err{wallet.FillPSBT(psbtx, complete, nHashType, sign, bip32derivs, nullptr, finalize)}; + if (err != TransactionError::OK) { + throw JSONRPCTransactionError(err); + } + + UniValue result(UniValue::VOBJ); + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << psbtx; + result.pushKV("psbt", EncodeBase64(ssTx.str())); + result.pushKV("complete", complete); + + return result; +}, + }; +} + +RPCHelpMan walletcreatefundedpsbt() +{ + return RPCHelpMan{"walletcreatefundedpsbt", + "\nCreates and funds a transaction in the Partially Signed Transaction format.\n" + "Implements the Creator and Updater roles.\n" + "All existing inputs must either have their previous output transaction be in the wallet\n" + "or be in the UTXO set. Solving data must be provided for non-wallet inputs.\n", + { + {"inputs", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "Leave empty to add inputs automatically. See add_inputs option.", + { + {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"}, + {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"}, + {"sequence", RPCArg::Type::NUM, RPCArg::DefaultHint{"depends on the value of the 'locktime' and 'options.replaceable' arguments"}, "The sequence number"}, + }, + }, + }, + }, + {"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The outputs (key-value pairs), where none of the keys are duplicated.\n" + "That is, each address can only appear once and there can only be one 'data' object.\n" + "For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n" + "accepted as second parameter.", + { + {"", RPCArg::Type::OBJ_USER_KEYS, RPCArg::Optional::OMITTED, "", + { + {"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "A key-value pair. The key (string) is the bitcoin address, the value (float or string) is the amount in " + CURRENCY_UNIT + ""}, + }, + }, + {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "", + { + {"data", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "A key-value pair. The key must be \"data\", the value is hex-encoded data"}, + }, + }, + }, + }, + {"locktime", RPCArg::Type::NUM, RPCArg::Default{0}, "Raw locktime. Non-0 value also locktime-activates inputs"}, + {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "", + Cat<std::vector<RPCArg>>( + { + {"add_inputs", RPCArg::Type::BOOL, RPCArg::Default{false}, "If inputs are specified, automatically include more if they are not enough."}, + {"include_unsafe", RPCArg::Type::BOOL, RPCArg::Default{false}, "Include inputs that are not safe to spend (unconfirmed transactions from outside keys and unconfirmed replacement transactions).\n" + "Warning: the resulting transaction may become invalid if one of the unsafe inputs disappears.\n" + "If that happens, you will need to fund the transaction with different inputs and republish it."}, + {"changeAddress", RPCArg::Type::STR_HEX, RPCArg::DefaultHint{"pool address"}, "The bitcoin address to receive the change"}, + {"changePosition", RPCArg::Type::NUM, RPCArg::DefaultHint{"random"}, "The index of the change output"}, + {"change_type", RPCArg::Type::STR, RPCArg::DefaultHint{"set by -changetype"}, "The output type to use. Only valid if changeAddress is not specified. Options are \"legacy\", \"p2sh-segwit\", and \"bech32\"."}, + {"includeWatching", RPCArg::Type::BOOL, RPCArg::DefaultHint{"true for watch-only wallets, otherwise false"}, "Also select inputs which are watch only"}, + {"lockUnspents", RPCArg::Type::BOOL, RPCArg::Default{false}, "Lock selected unspent outputs"}, + {"fee_rate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_ATOM + "/vB."}, + {"feeRate", RPCArg::Type::AMOUNT, RPCArg::DefaultHint{"not set, fall back to wallet fee estimation"}, "Specify a fee rate in " + CURRENCY_UNIT + "/kvB."}, + {"subtractFeeFromOutputs", RPCArg::Type::ARR, RPCArg::Default{UniValue::VARR}, "The outputs to subtract the fee from.\n" + "The fee will be equally deducted from the amount of each specified output.\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.", + { + {"vout_index", RPCArg::Type::NUM, RPCArg::Optional::OMITTED, "The zero-based output index, before a change output is added."}, + }, + }, + }, + FundTxDoc()), + "options"}, + {"bip32derivs", RPCArg::Type::BOOL, RPCArg::Default{true}, "Include BIP 32 derivation paths for public keys if we know them"}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR, "psbt", "The resulting raw transaction (base64-encoded string)"}, + {RPCResult::Type::STR_AMOUNT, "fee", "Fee in " + CURRENCY_UNIT + " the resulting transaction pays"}, + {RPCResult::Type::NUM, "changepos", "The position of the added change output, or -1"}, + } + }, + RPCExamples{ + "\nCreate a transaction with no inputs\n" + + HelpExampleCli("walletcreatefundedpsbt", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request); + if (!pwallet) return NullUniValue; + + CWallet& wallet{*pwallet}; + // Make sure the results are valid at least up to the most recent block + // the user could have gotten from another RPC command prior to now + wallet.BlockUntilSyncedToCurrentChain(); + + RPCTypeCheck(request.params, { + UniValue::VARR, + UniValueType(), // ARR or OBJ, checked later + UniValue::VNUM, + UniValue::VOBJ, + UniValue::VBOOL + }, true + ); + + CAmount fee; + int change_position; + bool rbf{wallet.m_signal_rbf}; + const UniValue &replaceable_arg = request.params[3]["replaceable"]; + if (!replaceable_arg.isNull()) { + RPCTypeCheckArgument(replaceable_arg, UniValue::VBOOL); + rbf = replaceable_arg.isTrue(); + } + CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf); + CCoinControl coin_control; + // Automatically select coins, unless at least one is manually selected. Can + // be overridden by options.add_inputs. + coin_control.m_add_inputs = rawTx.vin.size() == 0; + FundTransaction(wallet, rawTx, fee, change_position, request.params[3], coin_control, /* override_min_fee */ true); + + // Make a blank psbt + PartiallySignedTransaction psbtx(rawTx); + + // Fill transaction with out data but don't sign + bool bip32derivs = request.params[4].isNull() ? true : request.params[4].get_bool(); + bool complete = true; + const TransactionError err{wallet.FillPSBT(psbtx, complete, 1, false, bip32derivs)}; + if (err != TransactionError::OK) { + throw JSONRPCTransactionError(err); + } + + // Serialize the PSBT + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << psbtx; + + UniValue result(UniValue::VOBJ); + result.pushKV("psbt", EncodeBase64(ssTx.str())); + result.pushKV("fee", ValueFromAmount(fee)); + result.pushKV("changepos", change_position); + return result; +}, + }; +} |