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node: use uint256::FromUserHex for -assumevalid parsing

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Removes dependency on unsafe and deprecated uint256S.

This makes parsing more strict, by returning an error
when the input contains non-hex characters, or when it
contains more than 64 hex digits.

Also make feature_assumevalid.py more robust by using CBlock.hash
which is guaranteed to be 64 characters long, as opposed to the
variable-length hex(CBlock.sha256)
This commit is contained in:
stickies-v 2024-07-26 15:10:25 +01:00
parent 2e58fdb544
commit 6819e5a329
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3 changed files with 12 additions and 3 deletions
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8
src/node/chainstatemanager_args.cpp
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@ -39,7 +39,13 @@ util::Result<void> ApplyArgsManOptions(const ArgsManager& args, ChainstateManage
}
}
if (auto value{args.GetArg("-assumevalid")}) opts.assumed_valid_block = uint256S(*value);
if (auto value{args.GetArg("-assumevalid")}) {
if (auto block_hash{uint256::FromUserHex(*value)}) {
opts.assumed_valid_block = *block_hash;
} else {
return util::Error{strprintf(Untranslated("Invalid assumevalid block hash specified (%s), must be up to %d hex digits (or 0 to disable)"), *value, uint256::size() * 2)};
}
}
if (auto value{args.GetIntArg("-maxtipage")}) opts.max_tip_age = std::chrono::seconds{*value};