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core: return a special error from verifyHashAgainstScript

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It will help us to distinguish proper `false` verification result from
various verification errors.
This commit is contained in:
Anna Shaleva 2020-12-10 10:56:02 +03:00
parent 2ab0e6c399
commit 6d357c3793
1 changed files with 2 additions and 1 deletions
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3
pkg/core/blockchain.go
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@ -1595,6 +1595,7 @@ var (
ErrWitnessHashMismatch = errors.New("witness hash mismatch")
ErrNativeContractWitness = errors.New("native contract witness must have empty verification script")
ErrVerificationFailed = errors.New("signature check failed")
ErrInvalidSignature = fmt.Errorf("%w: invalid signature", ErrVerificationFailed)
ErrUnknownVerificationContract = errors.New("unknown verification contract")
ErrInvalidVerificationContract = errors.New("verification contract is missing `verify` method")
)
@ -1674,7 +1675,7 @@ func (bc *Blockchain) verifyHashAgainstScript(hash util.Uint160, witness *transa
return 0, fmt.Errorf("%w: expected exactly one returned value", ErrVerificationFailed)
}
if !res {
return 0, fmt.Errorf("%w: invalid signature", ErrVerificationFailed)
return vm.GasConsumed(), ErrInvalidSignature
}
} else {
return 0, fmt.Errorf("%w: no result returned from the script", ErrVerificationFailed)