/
misbehaviour.go
92 lines (79 loc) · 3.55 KB
/
misbehaviour.go
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package types
import (
"bytes"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
clienttypes "github.com/cosmos/ibc-go/modules/core/02-client/types"
host "github.com/cosmos/ibc-go/modules/core/24-host"
"github.com/cosmos/ibc-go/modules/core/exported"
)
var _ exported.Misbehaviour = &Misbehaviour{}
// ClientType is a Multisig light client.
func (misbehaviour Misbehaviour) ClientType() string {
return TrustedEthereum
}
// GetClientID returns the ID of the client that committed a misbehaviour.
func (misbehaviour Misbehaviour) GetClientID() string {
return misbehaviour.ClientId
}
// Type implements Evidence interface.
func (misbehaviour Misbehaviour) Type() string {
return exported.TypeClientMisbehaviour
}
// GetHeight returns the sequence at which misbehaviour occurred.
// Return exported.Height to satisfy interface
func (misbehaviour Misbehaviour) GetHeight() exported.Height {
return misbehaviour.Header1.Height
}
// ValidateBasic implements Evidence interface.
func (misbehaviour Misbehaviour) ValidateBasic() error {
if misbehaviour.Header1 == nil {
return sdkerrors.Wrap(ErrInvalidHeader, "misbehaviour Header1 cannot be nil")
}
if misbehaviour.Header2 == nil {
return sdkerrors.Wrap(ErrInvalidHeader, "misbehaviour Header2 cannot be nil")
}
if err := host.ClientIdentifierValidator(misbehaviour.ClientId); err != nil {
return sdkerrors.Wrap(err, "invalid client identifier for Multisig")
}
if err := misbehaviour.Header1.ValidateBasic(); err != nil {
return sdkerrors.Wrap(
clienttypes.ErrInvalidMisbehaviour,
sdkerrors.Wrap(err, "header 1 failed validation").Error(),
)
}
if err := misbehaviour.Header2.ValidateBasic(); err != nil {
return sdkerrors.Wrap(
clienttypes.ErrInvalidMisbehaviour,
sdkerrors.Wrap(err, "header 2 failed validation").Error(),
)
}
// Ensure that Height1 height is equal to Height2
if !misbehaviour.Header1.GetHeight().EQ(misbehaviour.Header2.GetHeight()) {
return sdkerrors.Wrapf(clienttypes.ErrInvalidMisbehaviour, "Header1 height is not as same as Header2 height (%s != %s)", misbehaviour.Header1.GetHeight(), misbehaviour.Header2.GetHeight())
}
// Ensure that Height1 timestamp is greater than or equal to timestamp
if misbehaviour.Header1.GetTimestamp() < misbehaviour.Header2.GetTimestamp() {
return sdkerrors.Wrapf(clienttypes.ErrInvalidMisbehaviour, "Header1 timestamp is less than Header2 timestamp (%d < %d)", misbehaviour.Header1.GetTimestamp(), misbehaviour.Header2.GetTimestamp())
}
// misbehaviour signatures cannot be identical
if bytes.Equal(misbehaviour.Header1.Signature, misbehaviour.Header2.Signature) {
return sdkerrors.Wrap(clienttypes.ErrInvalidMisbehaviour, "misbehaviour signatures cannot be equal")
}
// message data signed cannot be identical.
// XXX using sign bytes may be better
pubkey1, err := misbehaviour.Header1.GetPubKey()
if err != nil {
return sdkerrors.Wrap(clienttypes.ErrInvalidMisbehaviour, "invalid misbehaviour new public key")
}
pubkey2, err := misbehaviour.Header1.GetPubKey()
if err != nil {
return sdkerrors.Wrap(clienttypes.ErrInvalidMisbehaviour, "invalid misbehaviour new public key")
}
if bytes.Equal(misbehaviour.Header1.AccountProof, misbehaviour.Header2.AccountProof) &&
bytes.Equal(misbehaviour.Header1.StateRoot, misbehaviour.Header2.StateRoot) &&
(misbehaviour.Header1.NewPublicKey == nil || pubkey1.Equals(pubkey2)) &&
misbehaviour.Header1.NewDiversifier == misbehaviour.Header2.NewDiversifier {
return sdkerrors.Wrap(clienttypes.ErrInvalidMisbehaviour, "misbehaviour signature data must be signed over different messages")
}
return nil
}