diff --git a/src/coinjoin/coinjoin-util.cpp b/src/coinjoin/coinjoin-util.cpp index bd11552d055d4..8c5bbe99a93b3 100644 --- a/src/coinjoin/coinjoin-util.cpp +++ b/src/coinjoin/coinjoin-util.cpp @@ -139,7 +139,7 @@ CTransactionBuilder::CTransactionBuilder(std::shared_ptr pwalletIn, con for (const auto& coin : tallyItem.vecInputCoins) { const CScript& scriptPubKey = coin.txout.scriptPubKey; SignatureData sigdata; - bool res = ProduceSignature(DummySignatureCreator(pwallet.get()), scriptPubKey, sigdata); + bool res = ProduceSignature(*pwallet, DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata); assert(res); UpdateTransaction(dummyTx, nIn, sigdata); nIn++; diff --git a/src/dash-tx.cpp b/src/dash-tx.cpp index 640b6a910f858..818a511cb871f 100644 --- a/src/dash-tx.cpp +++ b/src/dash-tx.cpp @@ -596,7 +596,7 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr) SignatureData sigdata; // Only sign SIGHASH_SINGLE if there's a corresponding output: if (!fHashSingle || (i < mergedTx.vout.size())) - ProduceSignature(MutableTransactionSignatureCreator(&keystore, &mergedTx, i, amount, nHashType), prevPubKey, sigdata); + ProduceSignature(keystore, MutableTransactionSignatureCreator(&mergedTx, i, amount, nHashType), prevPubKey, sigdata); // ... and merge in other signatures: sigdata = CombineSignatures(prevPubKey, MutableTransactionSignatureChecker(&mergedTx, i, amount), sigdata, DataFromTransaction(txv, i)); diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp index 8d2ab8c97f5fe..6422207a96ab0 100644 --- a/src/rpc/rawtransaction.cpp +++ b/src/rpc/rawtransaction.cpp @@ -856,7 +856,7 @@ UniValue SignTransaction(CMutableTransaction& mtx, const UniValue& prevTxsUnival SignatureData sigdata; // Only sign SIGHASH_SINGLE if there's a corresponding output: if (!fHashSingle || (i < mtx.vout.size())) { - ProduceSignature(MutableTransactionSignatureCreator(keystore, &mtx, i, amount, nHashType), prevPubKey, sigdata); + ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata); } sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(mtx, i)); diff --git a/src/script/ismine.cpp b/src/script/ismine.cpp index bbc333454e499..35966d8e094ff 100644 --- a/src/script/ismine.cpp +++ b/src/script/ismine.cpp @@ -82,7 +82,7 @@ isminetype IsMine(const CKeyStore &keystore, const CScript& scriptPubKey) if (keystore.HaveWatchOnly(scriptPubKey)) { // TODO: This could be optimized some by doing some work after the above solver SignatureData sigs; - return ProduceSignature(DummySignatureCreator(&keystore), scriptPubKey, sigs) ? ISMINE_WATCH_SOLVABLE : ISMINE_WATCH_UNSOLVABLE; + return ProduceSignature(keystore, DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigs) ? ISMINE_WATCH_SOLVABLE : ISMINE_WATCH_UNSOLVABLE; } return ISMINE_NO; } diff --git a/src/script/sign.cpp b/src/script/sign.cpp index 9998d5ad2a2be..14cbe45c9cf6f 100644 --- a/src/script/sign.cpp +++ b/src/script/sign.cpp @@ -14,12 +14,12 @@ typedef std::vector valtype; -TransactionSignatureCreator::TransactionSignatureCreator(const SigningProvider* provider, const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn) : BaseSignatureCreator(provider), txTo(txToIn), nIn(nInIn), nHashType(nHashTypeIn), amount(amountIn), checker(txTo, nIn, amountIn) {} +TransactionSignatureCreator::TransactionSignatureCreator(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn) : txTo(txToIn), nIn(nInIn), nHashType(nHashTypeIn), amount(amountIn), checker(txTo, nIn, amountIn) {} -bool TransactionSignatureCreator::CreateSig(std::vector& vchSig, const CKeyID& address, const CScript& scriptCode, SigVersion sigversion) const +bool TransactionSignatureCreator::CreateSig(const SigningProvider& provider, std::vector& vchSig, const CKeyID& address, const CScript& scriptCode, SigVersion sigversion) const { CKey key; - if (!m_provider->GetKey(address, key)) + if (!provider.GetKey(address, key)) return false; uint256 hash = SignatureHash(scriptCode, *txTo, nIn, nHashType, amount, sigversion); @@ -29,16 +29,16 @@ bool TransactionSignatureCreator::CreateSig(std::vector& vchSig, return true; } -static bool Sign1(const CKeyID& address, const BaseSignatureCreator& creator, const CScript& scriptCode, std::vector& ret, SigVersion sigversion) +static bool Sign1(const SigningProvider& provider, const CKeyID& address, const BaseSignatureCreator& creator, const CScript& scriptCode, std::vector& ret, SigVersion sigversion) { std::vector vchSig; - if (!creator.CreateSig(vchSig, address, scriptCode, sigversion)) + if (!creator.CreateSig(provider, vchSig, address, scriptCode, sigversion)) return false; ret.push_back(vchSig); return true; } -static bool SignN(const std::vector& multisigdata, const BaseSignatureCreator& creator, const CScript& scriptCode, std::vector& ret, SigVersion sigversion) +static bool SignN(const SigningProvider& provider, const std::vector& multisigdata, const BaseSignatureCreator& creator, const CScript& scriptCode, std::vector& ret, SigVersion sigversion) { int nSigned = 0; int nRequired = multisigdata.front()[0]; @@ -46,7 +46,7 @@ static bool SignN(const std::vector& multisigdata, const BaseSignatureC { const valtype& pubkey = multisigdata[i]; CKeyID keyID = CPubKey(pubkey).GetID(); - if (Sign1(keyID, creator, scriptCode, ret, sigversion)) + if (Sign1(provider, keyID, creator, scriptCode, ret, sigversion)) ++nSigned; } return nSigned==nRequired; @@ -58,7 +58,7 @@ static bool SignN(const std::vector& multisigdata, const BaseSignatureC * unless whichTypeRet is TX_SCRIPTHASH, in which case scriptSigRet is the redemption script. * Returns false if scriptPubKey could not be completely satisfied. */ -static bool SignStep(const BaseSignatureCreator& creator, const CScript& scriptPubKey, +static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey, std::vector& ret, txnouttype& whichTypeRet, SigVersion sigversion) { CScript scriptRet; @@ -77,20 +77,20 @@ static bool SignStep(const BaseSignatureCreator& creator, const CScript& scriptP return false; case TX_PUBKEY: keyID = CPubKey(vSolutions[0]).GetID(); - return Sign1(keyID, creator, scriptPubKey, ret, sigversion); + return Sign1(provider, keyID, creator, scriptPubKey, ret, sigversion); case TX_PUBKEYHASH: keyID = CKeyID(uint160(vSolutions[0])); - if (!Sign1(keyID, creator, scriptPubKey, ret, sigversion)) + if (!Sign1(provider, keyID, creator, scriptPubKey, ret, sigversion)) return false; else { CPubKey vch; - creator.Provider().GetPubKey(keyID, vch); + provider.GetPubKey(keyID, vch); ret.push_back(ToByteVector(vch)); } return true; case TX_SCRIPTHASH: - if (creator.Provider().GetCScript(uint160(vSolutions[0]), scriptRet)) { + if (provider.GetCScript(uint160(vSolutions[0]), scriptRet)) { ret.push_back(std::vector(scriptRet.begin(), scriptRet.end())); return true; } @@ -98,7 +98,7 @@ static bool SignStep(const BaseSignatureCreator& creator, const CScript& scriptP case TX_MULTISIG: ret.push_back(valtype()); // workaround CHECKMULTISIG bug - return (SignN(vSolutions, creator, scriptPubKey, ret, sigversion)); + return (SignN(provider, vSolutions, creator, scriptPubKey, ret, sigversion)); default: return false; @@ -120,11 +120,11 @@ static CScript PushAll(const std::vector& values) return result; } -bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& fromPubKey, SignatureData& sigdata) +bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& fromPubKey, SignatureData& sigdata) { std::vector result; txnouttype whichType; - bool solved = SignStep(creator, fromPubKey, result, whichType, SigVersion::BASE); + bool solved = SignStep(provider, creator, fromPubKey, result, whichType, SigVersion::BASE); bool P2SH = false; CScript subscript; @@ -134,7 +134,7 @@ bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& fromPu // the final scriptSig is the signatures from that // and then the serialized subscript: subscript = CScript(result[0].begin(), result[0].end()); - solved = solved && SignStep(creator, subscript, result, whichType, SigVersion::BASE) && whichType != TX_SCRIPTHASH; + solved = solved && SignStep(provider, creator, subscript, result, whichType, SigVersion::BASE) && whichType != TX_SCRIPTHASH; P2SH = true; } @@ -171,10 +171,10 @@ bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, C assert(nIn < txTo.vin.size()); CTransaction txToConst(txTo); - TransactionSignatureCreator creator(&provider, &txToConst, nIn, amount, nHashType); + TransactionSignatureCreator creator(&txToConst, nIn, amount, nHashType); SignatureData sigdata; - bool ret = ProduceSignature(creator, fromPubKey, sigdata); + bool ret = ProduceSignature(provider, creator, fromPubKey, sigdata); UpdateTransaction(txTo, nIn, sigdata); return ret; } @@ -321,36 +321,34 @@ SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignature namespace { /** Dummy signature checker which accepts all signatures. */ -class DummySignatureChecker : public BaseSignatureChecker +class DummySignatureChecker final : public BaseSignatureChecker { public: DummySignatureChecker() {} + bool CheckSig(const std::vector& scriptSig, const std::vector& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const override { return true; } +}; +const DummySignatureChecker DUMMY_CHECKER; - bool CheckSig(const std::vector& scriptSig, const std::vector& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const override +class DummySignatureCreator final : public BaseSignatureCreator { +public: + DummySignatureCreator() {} + const BaseSignatureChecker& Checker() const override { return DUMMY_CHECKER; } + bool CreateSig(const SigningProvider& provider, std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const override { + // Create a dummy signature that is a valid DER-encoding + vchSig.assign(72, '\000'); + vchSig[0] = 0x30; + vchSig[1] = 69; + vchSig[2] = 0x02; + vchSig[3] = 33; + vchSig[4] = 0x01; + vchSig[4 + 33] = 0x02; + vchSig[5 + 33] = 32; + vchSig[6 + 33] = 0x01; + vchSig[6 + 33 + 32] = SIGHASH_ALL; return true; } }; -const DummySignatureChecker dummyChecker; -} // namespace - -const BaseSignatureChecker& DummySignatureCreator::Checker() const -{ - return dummyChecker; } -bool DummySignatureCreator::CreateSig(std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const -{ - // Create a dummy signature that is a valid DER-encoding - vchSig.assign(72, '\000'); - vchSig[0] = 0x30; - vchSig[1] = 69; - vchSig[2] = 0x02; - vchSig[3] = 33; - vchSig[4] = 0x01; - vchSig[4 + 33] = 0x02; - vchSig[5 + 33] = 32; - vchSig[6 + 33] = 0x01; - vchSig[6 + 33 + 32] = SIGHASH_ALL; - return true; -} +const BaseSignatureCreator& DUMMY_SIGNATURE_CREATOR = DummySignatureCreator(); diff --git a/src/script/sign.h b/src/script/sign.h index 1fa7e6c93caf4..53c25e336dcaf 100644 --- a/src/script/sign.h +++ b/src/script/sign.h @@ -26,19 +26,14 @@ class SigningProvider virtual bool GetKey(const CKeyID &address, CKey& key) const =0; }; -/** Virtual base class for signature creators. */ +/** Interface for signature creators. */ class BaseSignatureCreator { -protected: - const SigningProvider* m_provider; - public: - explicit BaseSignatureCreator(const SigningProvider* provider) : m_provider(provider) {} - const SigningProvider& Provider() const { return *m_provider; } virtual ~BaseSignatureCreator() {} virtual const BaseSignatureChecker& Checker() const =0; /** Create a singular (non-script) signature. */ - virtual bool CreateSig(std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const =0; + virtual bool CreateSig(const SigningProvider& provider, std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const =0; }; /** A signature creator for transactions. */ @@ -50,25 +45,20 @@ class TransactionSignatureCreator : public BaseSignatureCreator { const TransactionSignatureChecker checker; public: - TransactionSignatureCreator(const SigningProvider* provider, const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn=SIGHASH_ALL); + TransactionSignatureCreator(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn=SIGHASH_ALL); const BaseSignatureChecker& Checker() const override{ return checker; } - bool CreateSig(std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const override; + bool CreateSig(const SigningProvider& provider, std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const override; }; class MutableTransactionSignatureCreator : public TransactionSignatureCreator { CTransaction tx; public: - MutableTransactionSignatureCreator(const SigningProvider* provider, const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amount, int nHashTypeIn) : TransactionSignatureCreator(provider, &tx, nInIn, amount, nHashTypeIn), tx(*txToIn) {} + MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amount, int nHashTypeIn) : TransactionSignatureCreator(&tx, nInIn, amount, nHashTypeIn), tx(*txToIn) {} }; /** A signature creator that just produces 72-byte empty signatures. */ -class DummySignatureCreator : public BaseSignatureCreator { -public: - explicit DummySignatureCreator(const SigningProvider* provider) : BaseSignatureCreator(provider) {} - const BaseSignatureChecker& Checker() const override; - bool CreateSig(std::vector& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const override; -}; +extern const BaseSignatureCreator& DUMMY_SIGNATURE_CREATOR; struct SignatureData { CScript scriptSig; @@ -78,7 +68,7 @@ struct SignatureData { }; /** Produce a script signature using a generic signature creator. */ -bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& scriptPubKey, SignatureData& sigdata); +bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey, SignatureData& sigdata); /** Produce a script signature for a transaction. */ bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType); diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index b4d1fc7780ffc..f4dc193177711 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -2018,7 +2018,7 @@ 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 { @@ -3738,7 +3738,7 @@ bool CWallet::CreateTransaction(const std::vector& vecSend, CTransac for (const auto& coin : vecCoins) { const CScript& scriptPubKey = coin.txout.scriptPubKey; SignatureData sigdata; - if (!ProduceSignature(DummySignatureCreator(this), scriptPubKey, sigdata)) { + if (!ProduceSignature(*this, DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata)) { strFailReason = _("Signing transaction failed"); return false; } else { @@ -3927,7 +3927,7 @@ bool CWallet::CreateTransaction(const std::vector& vecSend, CTransac const CScript& scriptPubKey = coin.txout.scriptPubKey; SignatureData sigdata; - if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst, nIn, SIGHASH_ALL), scriptPubKey, sigdata)) + if (!ProduceSignature(*this, TransactionSignatureCreator(&txNewConst, nIn, SIGHASH_ALL), scriptPubKey, sigdata)) { strFailReason = _("Signing transaction failed"); return false;