61 lines
2.5 KiB
C++
61 lines
2.5 KiB
C++
|
// Copyright (c) 2009-2018 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 <rpc/protocol.h>
|
||
|
|
#include <wallet/psbtwallet.h>
|
||
|
|
|
||
|
|
bool FillPSBT(const CWallet* pwallet, PartiallySignedTransaction& psbtx, int sighash_type, bool sign, bool bip32derivs)
|
||
|
|
{
|
||
|
|
LOCK(pwallet->cs_wallet);
|
||
|
|
// Get all of the previous transactions
|
||
|
|
bool complete = true;
|
||
|
|
for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
|
||
|
|
const CTxIn& txin = psbtx.tx->vin[i];
|
||
|
|
PSBTInput& input = psbtx.inputs.at(i);
|
||
|
|
|
||
|
|
if (PSBTInputSigned(input)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Verify input looks sane. This will check that we have at most one uxto, witness or non-witness.
|
||
|
|
if (!input.IsSane()) {
|
||
|
|
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "PSBT input is not sane.");
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we have no utxo, grab it from the wallet.
|
||
|
|
if (!input.non_witness_utxo && input.witness_utxo.IsNull()) {
|
||
|
|
const uint256& txhash = txin.prevout.hash;
|
||
|
|
const auto it = pwallet->mapWallet.find(txhash);
|
||
|
|
if (it != pwallet->mapWallet.end()) {
|
||
|
|
const CWalletTx& wtx = it->second;
|
||
|
|
// We only need the non_witness_utxo, which is a superset of the witness_utxo.
|
||
|
|
// The signing code will switch to the smaller witness_utxo if this is ok.
|
||
|
|
input.non_witness_utxo = wtx.tx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the Sighash type
|
||
|
|
if (sign && input.sighash_type > 0 && input.sighash_type != sighash_type) {
|
||
|
|
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Specified Sighash and sighash in PSBT do not match.");
|
||
|
|
}
|
||
|
|
|
||
|
|
complete &= SignPSBTInput(HidingSigningProvider(pwallet, !sign, !bip32derivs), psbtx, i, sighash_type);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fill in the bip32 keypaths and redeemscripts for the outputs so that hardware wallets can identify change
|
||
|
|
for (unsigned int i = 0; i < psbtx.tx->vout.size(); ++i) {
|
||
|
|
const CTxOut& out = psbtx.tx->vout.at(i);
|
||
|
|
PSBTOutput& psbt_out = psbtx.outputs.at(i);
|
||
|
|
|
||
|
|
// Fill a SignatureData with output info
|
||
|
|
SignatureData sigdata;
|
||
|
|
psbt_out.FillSignatureData(sigdata);
|
||
|
|
|
||
|
|
MutableTransactionSignatureCreator creator(psbtx.tx.get_ptr(), 0, out.nValue, 1);
|
||
|
|
ProduceSignature(HidingSigningProvider(pwallet, true, !bip32derivs), creator, out.scriptPubKey, sigdata);
|
||
|
|
psbt_out.FromSignatureData(sigdata);
|
||
|
|
}
|
||
|
|
return complete;
|
||
|
|
}
|