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misbehaviour_handle.go
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/
misbehaviour_handle.go
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package solomachine
import (
errorsmod "cosmossdk.io/errors"
"github.com/cosmos/cosmos-sdk/codec"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
commitmenttypes "github.com/cosmos/ibc-go/v7/modules/core/23-commitment/types"
"github.com/cosmos/ibc-go/v7/modules/core/exported"
)
// CheckForMisbehaviour returns true for type Misbehaviour (passed VerifyClientMessage check), otherwise returns false
func (ClientState) CheckForMisbehaviour(_ sdk.Context, _ codec.BinaryCodec, _ storetypes.KVStore, clientMsg exported.ClientMessage) bool {
if _, ok := clientMsg.(*Misbehaviour); ok {
return true
}
return false
}
func (cs ClientState) verifyMisbehaviour(cdc codec.BinaryCodec, misbehaviour *Misbehaviour) error {
// NOTE: a check that the misbehaviour message data are not equal is done by
// misbehaviour.ValidateBasic which is called by the 02-client keeper.
// verify first signature
if err := cs.verifySignatureAndData(cdc, misbehaviour, misbehaviour.SignatureOne); err != nil {
return errorsmod.Wrap(err, "failed to verify signature one")
}
// verify second signature
if err := cs.verifySignatureAndData(cdc, misbehaviour, misbehaviour.SignatureTwo); err != nil {
return errorsmod.Wrap(err, "failed to verify signature two")
}
return nil
}
// verifySignatureAndData verifies that the currently registered public key has signed
// over the provided data and that the data is valid. The data is valid if it can be
// unmarshaled into the specified data type.
func (cs ClientState) verifySignatureAndData(cdc codec.BinaryCodec, misbehaviour *Misbehaviour, sigAndData *SignatureAndData) error {
// do not check misbehaviour timestamp since we want to allow processing of past misbehaviour
if err := cdc.Unmarshal(sigAndData.Path, new(commitmenttypes.MerklePath)); err != nil {
return err
}
signBytes := SignBytes{
Sequence: misbehaviour.Sequence,
Timestamp: sigAndData.Timestamp,
Diversifier: cs.ConsensusState.Diversifier,
Path: sigAndData.Path,
Data: sigAndData.Data,
}
data, err := cdc.Marshal(&signBytes)
if err != nil {
return err
}
sigData, err := UnmarshalSignatureData(cdc, sigAndData.Signature)
if err != nil {
return err
}
publicKey, err := cs.ConsensusState.GetPubKey()
if err != nil {
return err
}
return VerifySignature(publicKey, data, sigData)
}