From 79804fe24bd00e183382dfbcab9343960d158aa5 Mon Sep 17 00:00:00 2001 From: Sjors Provoost Date: Fri, 12 Jul 2019 13:30:10 +0100 Subject: [PATCH 1/2] [rpc] walletcreatefundedpsbt: don't automatically append inputs When the user doesn't specificy inputs, it makes sense to automatically select them. But when the user does specify inputs, we now fail if the amount is insufficient, unless addInputs is set to true. --- doc/release-notes-16377.md | 6 ++++++ src/wallet/coincontrol.cpp | 2 +- src/wallet/coincontrol.h | 2 ++ src/wallet/rpcwallet.cpp | 22 ++++++++++++++++------ src/wallet/wallet.cpp | 5 +++++ test/functional/rpc_psbt.py | 26 +++++++++++++++++--------- 6 files changed, 47 insertions(+), 16 deletions(-) create mode 100644 doc/release-notes-16377.md diff --git a/doc/release-notes-16377.md b/doc/release-notes-16377.md new file mode 100644 index 00000000000..2cb89f0d514 --- /dev/null +++ b/doc/release-notes-16377.md @@ -0,0 +1,6 @@ +RPC changes +----------- +- The `walletcreatefundedpsbt` RPC call will now fail with + `Insufficient funds` when inputs are manually selected but are not enough to cover + the outputs and fee. Additional inputs can automatically be added through the + new `add_inputs` option. diff --git a/src/wallet/coincontrol.cpp b/src/wallet/coincontrol.cpp index c83e598825d..720877ead08 100644 --- a/src/wallet/coincontrol.cpp +++ b/src/wallet/coincontrol.cpp @@ -10,6 +10,7 @@ void CCoinControl::SetNull() { destChange = CNoDestination(); m_change_type.reset(); + m_add_inputs = true; fAllowOtherInputs = false; fAllowWatchOnly = false; m_avoid_partial_spends = gArgs.GetBoolArg("-avoidpartialspends", DEFAULT_AVOIDPARTIALSPENDS); @@ -23,4 +24,3 @@ void CCoinControl::SetNull() m_min_depth = DEFAULT_MIN_DEPTH; m_max_depth = DEFAULT_MAX_DEPTH; } - diff --git a/src/wallet/coincontrol.h b/src/wallet/coincontrol.h index 2893d0ab3d8..c499b0ff25e 100644 --- a/src/wallet/coincontrol.h +++ b/src/wallet/coincontrol.h @@ -26,6 +26,8 @@ public: CTxDestination destChange; //! Override the default change type if set, ignored if destChange is set Optional m_change_type; + //! If false, only selected inputs are used + bool m_add_inputs; //! If false, allows unselected inputs, but requires all selected inputs be used bool fAllowOtherInputs; //! Includes watch only addresses which are solvable diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index 24df947405b..80328e0b8fb 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -3016,13 +3016,12 @@ static UniValue listunspent(const JSONRPCRequest& request) return results; } -void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& fee_out, int& change_position, UniValue options) +void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& fee_out, int& change_position, UniValue options, CCoinControl& coinControl) { // 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(); - CCoinControl coinControl; change_position = -1; bool lockUnspents = false; UniValue subtractFeeFromOutputs; @@ -3037,6 +3036,7 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f RPCTypeCheckArgument(options, UniValue::VOBJ); RPCTypeCheckObj(options, { + {"add_inputs", UniValueType(UniValue::VBOOL)}, {"changeAddress", UniValueType(UniValue::VSTR)}, {"changePosition", UniValueType(UniValue::VNUM)}, {"change_type", UniValueType(UniValue::VSTR)}, @@ -3050,6 +3050,10 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f }, true, true); + if (options.exists("add_inputs") ) { + coinControl.m_add_inputs = options["add_inputs"].get_bool(); + } + if (options.exists("changeAddress")) { CTxDestination dest = DecodeDestination(options["changeAddress"].get_str()); @@ -3224,7 +3228,8 @@ static UniValue fundrawtransaction(const JSONRPCRequest& request) CAmount fee; int change_position; - FundTransaction(pwallet, tx, fee, change_position, request.params[1]); + CCoinControl coin_control; + FundTransaction(pwallet, tx, fee, change_position, request.params[1], coin_control); UniValue result(UniValue::VOBJ); result.pushKV("hex", EncodeHexTx(CTransaction(tx))); @@ -4146,10 +4151,10 @@ UniValue walletcreatefundedpsbt(const JSONRPCRequest& request) } RPCHelpMan{"walletcreatefundedpsbt", - "\nCreates and funds a transaction in the Partially Signed Transaction format. Inputs will be added if supplied inputs are not enough\n" + "\nCreates and funds a transaction in the Partially Signed Transaction format.\n" "Implements the Creator and Updater roles.\n", { - {"inputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The inputs", + {"inputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The inputs. Leave empty to add inputs automatically. See add_inputs option.", { {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "", { @@ -4180,6 +4185,7 @@ UniValue walletcreatefundedpsbt(const JSONRPCRequest& request) {"locktime", RPCArg::Type::NUM, /* default */ "0", "Raw locktime. Non-0 value also locktime-activates inputs"}, {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "", { + {"add_inputs", RPCArg::Type::BOOL, /* default */ "false", "If inputs are specified, automatically include more if they are not enough."}, {"changeAddress", RPCArg::Type::STR_HEX, /* default */ "pool address", "The bitcoin address to receive the change"}, {"changePosition", RPCArg::Type::NUM, /* default */ "random", "The index of the change output"}, {"change_type", RPCArg::Type::STR, /* default */ "set by -changetype", "The output type to use. Only valid if changeAddress is not specified. Options are \"legacy\", \"p2sh-segwit\", and \"bech32\"."}, @@ -4237,7 +4243,11 @@ UniValue walletcreatefundedpsbt(const JSONRPCRequest& request) rbf = replaceable_arg.isTrue(); } CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf); - FundTransaction(pwallet, rawTx, fee, change_position, request.params[3]); + CCoinControl coin_control; + // Automatically select coins, unless at least one is manually selected. Can + // be overriden by options.add_inputs. + coin_control.m_add_inputs = rawTx.vin.size() == 0; + FundTransaction(pwallet, rawTx, fee, change_position, request.params[3], coin_control); // Make a blank psbt PartiallySignedTransaction psbtx(rawTx); diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index 79e29d050fe..62b200500b0 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -2149,6 +2149,11 @@ void CWallet::AvailableCoins(interfaces::Chain::Lock& locked_chain, std::vector< } for (unsigned int i = 0; i < wtx.tx->vout.size(); i++) { + // Only consider selected coins if add_inputs is false + if (coinControl && !coinControl->m_add_inputs && !coinControl->IsSelected(COutPoint(entry.first, i))) { + continue; + } + if (wtx.tx->vout[i].nValue < nMinimumAmount || wtx.tx->vout[i].nValue > nMaximumAmount) continue; diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py index 3a633775454..3f8ee2def8e 100755 --- a/test/functional/rpc_psbt.py +++ b/test/functional/rpc_psbt.py @@ -8,6 +8,7 @@ from decimal import Decimal from test_framework.test_framework import BitcoinTestFramework from test_framework.util import ( + assert_approx, assert_equal, assert_greater_than, assert_raises_rpc_error, @@ -80,6 +81,13 @@ class PSBTTest(BitcoinTestFramework): # Create and fund a raw tx for sending 10 BTC psbtx1 = self.nodes[0].walletcreatefundedpsbt([], {self.nodes[2].getnewaddress():10})['psbt'] + # If inputs are specified, do not automatically add more: + utxo1 = self.nodes[0].listunspent()[0] + assert_raises_rpc_error(-4, "Insufficient funds", self.nodes[0].walletcreatefundedpsbt, [{"txid": utxo1['txid'], "vout": utxo1['vout']}], {self.nodes[2].getnewaddress():90}) + + psbtx1 = self.nodes[0].walletcreatefundedpsbt([{"txid": utxo1['txid'], "vout": utxo1['vout']}], {self.nodes[2].getnewaddress():90}, 0, {"add_inputs": True})['psbt'] + assert_equal(len(self.nodes[0].decodepsbt(psbtx1)['tx']['vin']), 2) + # Node 1 should not be able to add anything to it but still return the psbtx same as before psbtx = self.nodes[1].walletprocesspsbt(psbtx1)['psbt'] assert_equal(psbtx1, psbtx) @@ -137,13 +145,13 @@ class PSBTTest(BitcoinTestFramework): self.nodes[1].sendrawtransaction(self.nodes[1].finalizepsbt(walletprocesspsbt_out['psbt'])['hex']) # feeRate of 0.1 BTC / KB produces a total fee slightly below -maxtxfee (~0.05280000): - res = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():29.99}, 0, {"feeRate": 0.1}) - assert_greater_than(res["fee"], 0.05) - assert_greater_than(0.06, res["fee"]) + res = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():29.99}, 0, {"feeRate": 0.1, "add_inputs": True}) + assert_approx(res["fee"], 0.055, 0.005) # feeRate of 10 BTC / KB produces a total fee well above -maxtxfee # previously this was silently capped at -maxtxfee - assert_raises_rpc_error(-4, "Fee exceeds maximum configured by -maxtxfee", self.nodes[1].walletcreatefundedpsbt, [{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():29.99}, 0, {"feeRate": 10}) + assert_raises_rpc_error(-4, "Fee exceeds maximum configured by -maxtxfee", self.nodes[1].walletcreatefundedpsbt, [{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():29.99}, 0, {"feeRate": 10, "add_inputs": True}) + assert_raises_rpc_error(-4, "Fee exceeds maximum configured by -maxtxfee", self.nodes[1].walletcreatefundedpsbt, [{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():1}, 0, {"feeRate": 10, "add_inputs": False}) # partially sign multisig things with node 1 psbtx = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2wsh_pos},{"txid":txid,"vout":p2sh_pos},{"txid":txid,"vout":p2sh_p2wsh_pos}], {self.nodes[1].getnewaddress():29.99})['psbt'] @@ -221,7 +229,7 @@ class PSBTTest(BitcoinTestFramework): # replaceable arg block_height = self.nodes[0].getblockcount() unspent = self.nodes[0].listunspent()[0] - psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], block_height+2, {"replaceable": False}, False) + psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], block_height+2, {"replaceable": False, "add_inputs": True}, False) decoded_psbt = self.nodes[0].decodepsbt(psbtx_info["psbt"]) for tx_in, psbt_in in zip(decoded_psbt["tx"]["vin"], decoded_psbt["inputs"]): assert_greater_than(tx_in["sequence"], MAX_BIP125_RBF_SEQUENCE) @@ -229,7 +237,7 @@ class PSBTTest(BitcoinTestFramework): assert_equal(decoded_psbt["tx"]["locktime"], block_height+2) # Same construction with only locktime set and RBF explicitly enabled - psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], block_height, {"replaceable": True}, True) + psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], block_height, {"replaceable": True, "add_inputs": True}, True) decoded_psbt = self.nodes[0].decodepsbt(psbtx_info["psbt"]) for tx_in, psbt_in in zip(decoded_psbt["tx"]["vin"], decoded_psbt["inputs"]): assert_equal(tx_in["sequence"], MAX_BIP125_RBF_SEQUENCE) @@ -237,7 +245,7 @@ class PSBTTest(BitcoinTestFramework): assert_equal(decoded_psbt["tx"]["locktime"], block_height) # Same construction without optional arguments - psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}]) + psbtx_info = self.nodes[0].walletcreatefundedpsbt([], [{self.nodes[2].getnewaddress():unspent["amount"]+1}]) decoded_psbt = self.nodes[0].decodepsbt(psbtx_info["psbt"]) for tx_in, psbt_in in zip(decoded_psbt["tx"]["vin"], decoded_psbt["inputs"]): assert_equal(tx_in["sequence"], MAX_BIP125_RBF_SEQUENCE) @@ -246,7 +254,7 @@ class PSBTTest(BitcoinTestFramework): # Same construction without optional arguments, for a node with -walletrbf=0 unspent1 = self.nodes[1].listunspent()[0] - psbtx_info = self.nodes[1].walletcreatefundedpsbt([{"txid":unspent1["txid"], "vout":unspent1["vout"]}], [{self.nodes[2].getnewaddress():unspent1["amount"]+1}], block_height) + psbtx_info = self.nodes[1].walletcreatefundedpsbt([{"txid":unspent1["txid"], "vout":unspent1["vout"]}], [{self.nodes[2].getnewaddress():unspent1["amount"]+1}], block_height, {"add_inputs": True}) decoded_psbt = self.nodes[1].decodepsbt(psbtx_info["psbt"]) for tx_in, psbt_in in zip(decoded_psbt["tx"]["vin"], decoded_psbt["inputs"]): assert_greater_than(tx_in["sequence"], MAX_BIP125_RBF_SEQUENCE) @@ -257,7 +265,7 @@ class PSBTTest(BitcoinTestFramework): self.nodes[0].walletcreatefundedpsbt([], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], block_height+2, {"changeAddress":self.nodes[1].getnewaddress()}, False) # Regression test for 14473 (mishandling of already-signed witness transaction): - psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}]) + psbtx_info = self.nodes[0].walletcreatefundedpsbt([{"txid":unspent["txid"], "vout":unspent["vout"]}], [{self.nodes[2].getnewaddress():unspent["amount"]+1}], 0, {"add_inputs": True}) complete_psbt = self.nodes[0].walletprocesspsbt(psbtx_info["psbt"]) double_processed_psbt = self.nodes[0].walletprocesspsbt(complete_psbt["psbt"]) assert_equal(complete_psbt, double_processed_psbt) From e5327f947c310849e1ddbb24321e4c9f85564549 Mon Sep 17 00:00:00 2001 From: Sjors Provoost Date: Thu, 20 Feb 2020 16:19:59 +0100 Subject: [PATCH 2/2] [rpc] fundrawtransaction: add_inputs option to control automatic input adding --- doc/release-notes-16377.md | 3 +++ src/wallet/rpcwallet.cpp | 7 +++++-- test/functional/rpc_fundrawtransaction.py | 14 ++++++++++++-- 3 files changed, 20 insertions(+), 4 deletions(-) diff --git a/doc/release-notes-16377.md b/doc/release-notes-16377.md index 2cb89f0d514..3442fa451b3 100644 --- a/doc/release-notes-16377.md +++ b/doc/release-notes-16377.md @@ -4,3 +4,6 @@ RPC changes `Insufficient funds` when inputs are manually selected but are not enough to cover the outputs and fee. Additional inputs can automatically be added through the new `add_inputs` option. + +- The `fundrawtransaction` RPC now supports `add_inputs` option that when `false` + prevents adding more inputs if necessary and consequently the RPC fails. diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index 80328e0b8fb..5b09ebee435 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -3148,8 +3148,8 @@ static UniValue fundrawtransaction(const JSONRPCRequest& request) } RPCHelpMan{"fundrawtransaction", - "\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 at most one change output to the outputs.\n" + "\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" @@ -3163,6 +3163,7 @@ static UniValue fundrawtransaction(const JSONRPCRequest& request) {"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}", { + {"add_inputs", RPCArg::Type::BOOL, /* default */ "true", "For a transaction with existing inputs, automatically include more if they are not enough."}, {"changeAddress", RPCArg::Type::STR, /* default */ "pool address", "The bitcoin address to receive the change"}, {"changePosition", RPCArg::Type::NUM, /* default */ "random", "The index of the change output"}, {"change_type", RPCArg::Type::STR, /* default */ "set by -changetype", "The output type to use. Only valid if changeAddress is not specified. Options are \"legacy\", \"p2sh-segwit\", and \"bech32\"."}, @@ -3229,6 +3230,8 @@ static UniValue fundrawtransaction(const JSONRPCRequest& request) CAmount fee; int change_position; CCoinControl coin_control; + // Automatically select (additional) coins. Can be overriden by options.add_inputs. + coin_control.m_add_inputs = true; FundTransaction(pwallet, tx, fee, change_position, request.params[1], coin_control); UniValue result(UniValue::VOBJ); diff --git a/test/functional/rpc_fundrawtransaction.py b/test/functional/rpc_fundrawtransaction.py index c435ef24cee..1638e3142bd 100755 --- a/test/functional/rpc_fundrawtransaction.py +++ b/test/functional/rpc_fundrawtransaction.py @@ -271,7 +271,11 @@ class RawTransactionsTest(BitcoinTestFramework): assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) assert_equal("00", dec_tx['vin'][0]['scriptSig']['hex']) + # Should fail without add_inputs: + assert_raises_rpc_error(-4, "Insufficient funds", self.nodes[2].fundrawtransaction, rawtx, {"add_inputs": False}) + # add_inputs is enabled by default rawtxfund = self.nodes[2].fundrawtransaction(rawtx) + dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0 @@ -299,7 +303,10 @@ class RawTransactionsTest(BitcoinTestFramework): dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) - rawtxfund = self.nodes[2].fundrawtransaction(rawtx) + # Should fail without add_inputs: + assert_raises_rpc_error(-4, "Insufficient funds", self.nodes[2].fundrawtransaction, rawtx, {"add_inputs": False}) + rawtxfund = self.nodes[2].fundrawtransaction(rawtx, {"add_inputs": True}) + dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0 @@ -330,7 +337,10 @@ class RawTransactionsTest(BitcoinTestFramework): dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) - rawtxfund = self.nodes[2].fundrawtransaction(rawtx) + # Should fail without add_inputs: + assert_raises_rpc_error(-4, "Insufficient funds", self.nodes[2].fundrawtransaction, rawtx, {"add_inputs": False}) + rawtxfund = self.nodes[2].fundrawtransaction(rawtx, {"add_inputs": True}) + dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0