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[validation] Improve script check error reporting

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Github-Pull: #31097
Rebased-From: f859ff8a4e
This commit is contained in:
dergoegge 2024-10-16 10:18:48 +01:00 committed by Luke Dashjr
parent 1248d0da22
commit 2d69e4c454
1 changed files with 11 additions and 1 deletions
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12
src/validation.cpp
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@ -2181,6 +2181,8 @@ bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
if (pvChecks) {
pvChecks->emplace_back(std::move(check));
} else if (!check()) {
ScriptError error{check.GetScriptError()};
if (flags & STANDARD_NOT_MANDATORY_VERIFY_FLAGS) {
// Check whether the failure was caused by a
// non-mandatory script verification check, such as
@ -2194,6 +2196,14 @@ bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
flags & ~STANDARD_NOT_MANDATORY_VERIFY_FLAGS, cacheSigStore, &txdata);
if (check2())
return state.Invalid(TxValidationResult::TX_NOT_STANDARD, strprintf("non-mandatory-script-verify-flag (%s)", ScriptErrorString(check.GetScriptError())));
// If the second check failed, it failed due to a mandatory script verification
// flag, but the first check might have failed on a non-mandatory script
// verification flag.
//
// Avoid reporting a mandatory script check failure with a non-mandatory error
// string by reporting the error from the second check.
error = check2.GetScriptError();
}
// MANDATORY flag failures correspond to
// TxValidationResult::TX_CONSENSUS. Because CONSENSUS
@ -2204,7 +2214,7 @@ bool CheckInputScripts(const CTransaction& tx, TxValidationState& state,
// support, to avoid splitting the network (but this
// depends on the details of how net_processing handles
// such errors).
return state.Invalid(TxValidationResult::TX_CONSENSUS, strprintf("mandatory-script-verify-flag-failed (%s)", ScriptErrorString(check.GetScriptError())));
return state.Invalid(TxValidationResult::TX_CONSENSUS, strprintf("mandatory-script-verify-flag-failed (%s)", ScriptErrorString(error)));
}
}