fix: restrict TempoStateReader callers#535
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Summary
Restricts the standalone
TempoStateReaderprecompile to authorized zone access paths. The normal path isZoneInbox/ZoneOutbox/ZoneConfigcalling theTempoStatewrapper, which enforces the zone-system-contract policy before forwarding to the reader with the currenttempoBlockNumber.The precompile now allows the
TempoStatewrapper and the known zone system predeploys, while arbitrary callers revert withUnauthorizedbefore selector dispatch orL1StateProvideraccess.Root Cause
The precompile rejected delegatecall but accepted direct calls from any EVM caller, so user transactions could bypass the wrapper-only system-contract check and trigger L1 storage reads with caller-selected inputs.
Impact
Unauthorized direct callers are rejected at the precompile boundary. Legitimate wrapper-forwarded reads from
TempoState, plus direct internal reads from zone system predeploys, continue to work.