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41c11ad2c1
Closes: #4530 This PR contains logic for both submitting an evidence by the light client (lite2 package) and receiving it on the Tendermint side (/broadcast_evidence RPC and/or EvidenceReactor#Receive). Upon receiving the ConflictingHeadersEvidence (introduced by this PR), the Tendermint validates it, then breaks it down into smaller pieces (DuplicateVoteEvidence, LunaticValidatorEvidence, PhantomValidatorEvidence, PotentialAmnesiaEvidence). Afterwards, each piece of evidence is verified against the state of the full node and added to the pool, from which it's reaped upon block creation. * rpc/client: do not pass height param if height ptr is nil * rpc/core: validate incoming evidence! * only accept ConflictingHeadersEvidence if one of the headers is committed from this full node's perspective This simplifies the code. Plus, if there are multiple forks, we'll likely to receive multiple ConflictingHeadersEvidence anyway. * swap CommitSig with Vote in LunaticValidatorEvidence Vote is needed to validate signature * no need to embed client http is a provider and should not be used as a client
39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
package provider
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import (
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"github.com/tendermint/tendermint/types"
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)
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// Provider provides information for the lite client to sync (verification
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// happens in the client).
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type Provider interface {
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// ChainID returns the blockchain ID.
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ChainID() string
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// SignedHeader returns the SignedHeader that corresponds to the given
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// height.
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//
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// 0 - the latest.
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// height must be >= 0.
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//
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// If the provider fails to fetch the SignedHeader due to the IO or other
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// issues, an error will be returned.
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// If there's no SignedHeader for the given height, ErrSignedHeaderNotFound
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// error is returned.
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SignedHeader(height int64) (*types.SignedHeader, error)
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// ValidatorSet returns the ValidatorSet that corresponds to height.
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//
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// 0 - the latest.
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// height must be >= 0.
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//
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// If the provider fails to fetch the ValidatorSet due to the IO or other
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// issues, an error will be returned.
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// If there's no ValidatorSet for the given height, ErrValidatorSetNotFound
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// error is returned.
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ValidatorSet(height int64) (*types.ValidatorSet, error)
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// ReportEvidence reports an evidence of misbehavior.
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ReportEvidence(ev types.Evidence) error
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}
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