abci++: Vote extension cleanup #9848
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* Split vote verification/validation based on vote extensions Some parts of the code need vote extensions to be verified and validated (mostly in consensus), and other parts of the code don't because its possible that, in some cases (as per RFC 017), we won't have vote extensions. This explicitly facilitates that split. Signed-off-by: Thane Thomson <connect@thanethomson.com> * Only sign extensions in precommits, not prevotes Signed-off-by: Thane Thomson <connect@thanethomson.com> * Update privval/file.go Co-authored-by: M. J. Fromberger <fromberger@interchain.io> * Apply suggestions from code review Co-authored-by: M. J. Fromberger <fromberger@interchain.io> * Temporarily disable extension requirement again for E2E testing Signed-off-by: Thane Thomson <connect@thanethomson.com> * Reorganize comment for clarity Signed-off-by: Thane Thomson <connect@thanethomson.com> * Leave vote validation and pre-call nil check up to caller of VoteToProto Signed-off-by: Thane Thomson <connect@thanethomson.com> * Split complex vote validation test into multiple tests Signed-off-by: Thane Thomson <connect@thanethomson.com> * Universally enforce no vote extensions on any vote type but precommits Signed-off-by: Thane Thomson <connect@thanethomson.com> * Make error messages more generic Signed-off-by: Thane Thomson <connect@thanethomson.com> * Verify with vote extensions when constructing a VoteSet Signed-off-by: Thane Thomson <connect@thanethomson.com> * Expand comment for clarity Signed-off-by: Thane Thomson <connect@thanethomson.com> * Add extension check for prevotes prior to signing votes Signed-off-by: Thane Thomson <connect@thanethomson.com> * Fix supporting test code to only inject extensions into precommits Signed-off-by: Thane Thomson <connect@thanethomson.com> * Separate vote malleation from signing in vote tests for clarity Signed-off-by: Thane Thomson <connect@thanethomson.com> * Add extension signature length check and corresponding test Signed-off-by: Thane Thomson <connect@thanethomson.com> * Perform basic vote validation in CommitToVoteSet Signed-off-by: Thane Thomson <connect@thanethomson.com> Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
thanethomson
approved these changes
Dec 7, 2022
There's I'll push the fix after the dinner (I don't want to push it until I test it well) |
| // TODO(thane): Remove extension length check once | ||
| // https://github.com/tendermint/tendermint/issues/8272 is | ||
| // resolved. | ||
| if len(vote.Extension) > 0 && len(vote.ExtensionSignature) == 0 { |
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The details may be a bit foggy to me, but our decision was to ensure that, once vote extensions are enabled, the vote extension must always have a signature regardless of the extension length.
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Looking at #9396, if I understand correctly, that will come in a follow-up PR?
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Great, then no issue!
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@thanethomson is right, this is changing in upcoming PRs
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Looks correct, left a comment making sure my understanding is correct. |
williambanfield
approved these changes
Dec 7, 2022
Closed
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Closes #9846
This is a PR cherry-picking one single PR: #8402
The contents of this patch were necessary in preparation for implementing the solution for vote extension propagation (which will be in an upcoming PR)
N.B: The changelog will be updated once branch
feature/abci++vefis merged back intomainPR checklist
CHANGELOG_PENDING.mdupdated, or no changelog entry neededdocs/) and code comments, or nodocumentation updates needed