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core, eth/downloader: validate blobtx.To at serialization time #27393

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merged 1 commit into from May 31, 2023

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karalabe
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The current 4844 spec states that the data format of blob txs allows the To field to be null, but such transactions are rejected as invalid during block processing. This is a weird take (probably an omission to be fixed) since this essentially means that the To fields cannot be null, but rejects the fact later in the processing pipeline.

This PR changes the To field from *common.Address to common.Address. This will ensure that nil will never enter Geth inside a blob transaction. Interestingly, this PR can be merged even now without a spec change, since both versions of this (reject at parse time vs reject at interpretation time) have the same effect.

Still, would be nice to confirm in the spec that nilness should be forbidden altogether.

@karalabe karalabe added this to the 1.12.1 milestone May 31, 2023
@karalabe karalabe mentioned this pull request May 31, 2023
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@MariusVanDerWijden MariusVanDerWijden left a comment

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SGTM

@lightclient
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Yeah nilness should be altogether forbidden. I can make it more explicit in the spec.

@karalabe karalabe merged commit 008086f into ethereum:master May 31, 2023
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antonydenyer pushed a commit to antonydenyer/go-ethereum that referenced this pull request Jul 28, 2023
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devopsbo3 pushed a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
devopsbo3 added a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
devopsbo3 added a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
devopsbo3 added a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
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3 participants