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Merge #12803: Make BaseSignatureCreator a pure interface

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be67831 Make DummySignatureCreator a singleton (Pieter Wuille)
190b8d2 Make BaseSignatureCreator a pure interface (Pieter Wuille)

Pull request description:

  * Removes the `m_provider` field from `BaseSignatureCreator`. Instead both a `SigningProvider` (which provides keys and scripts) and a `BaseSignatureCreator` (which implements the transaction-specific (or other) signing logic) are passed into and down in `ProduceSignature`, making the two concepts orthogonal.
  * Makes `BaseSignatureCreator` a pure interface without constructor, making it easier to implement new derivations of it (for example for message signing).
  * As `DummySignatureCreator` now becomes a stateless object, turn it into a singleton `DUMMY_SIGNATURE_CREATOR`.

Tree-SHA512: 5f1f4512e4ea7d02a31df7b9ede55008efa716c5b74a2630ca1c2fc6599584d8bf5f5641487266127f4b3788033803539fbd22b03ef1219c83c10da2d3da3dcd
This commit is contained in:
Wladimir J. van der Laan
2018-04-12 22:30:41 +02:00
parent 39439e5ab4 be67831210
commit 8480d41e0f
7 changed files with 59 additions and 72 deletions
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6
src/wallet/wallet.cpp
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@@ -1535,7 +1535,7 @@ bool CWallet::DummySignInput(CTxIn &tx_in, const CTxOut &txout) const
const CScript& scriptPubKey = txout.scriptPubKey;
SignatureData sigdata;
if (!ProduceSignature(DummySignatureCreator(this), scriptPubKey, sigdata))
if (!ProduceSignature(*this, DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata))
{
return false;
} else {
@@ -2582,7 +2582,7 @@ bool CWallet::SignTransaction(CMutableTransaction &tx)
const CScript& scriptPubKey = mi->second.tx->vout[input.prevout.n].scriptPubKey;
const CAmount& amount = mi->second.tx->vout[input.prevout.n].nValue;
SignatureData sigdata;
if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
if (!ProduceSignature(*this, TransactionSignatureCreator(&txNewConst, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
return false;
}
UpdateTransaction(tx, nIn, sigdata);
@@ -3011,7 +3011,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
const CScript& scriptPubKey = coin.txout.scriptPubKey;
SignatureData sigdata;
if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst, nIn, coin.txout.nValue, SIGHASH_ALL), scriptPubKey, sigdata))
if (!ProduceSignature(*this, TransactionSignatureCreator(&txNewConst, nIn, coin.txout.nValue, SIGHASH_ALL), scriptPubKey, sigdata))
{
strFailReason = _("Signing transaction failed");
return false;