fix: add equivocation proposal message back in protos (#1394)

* add depreacted equiv prop msg def

* add codec and content for equivo proposal msg

* doc

* proto

proto/interchain_security/ccv/provider/v1/provider.proto

@@ -12,6 +12,7 @@ import "google/protobuf/duration.proto";
 import "ibc/core/client/v1/client.proto";
 import "ibc/lightclients/tendermint/v1/tendermint.proto";
 import "tendermint/crypto/keys.proto";
+import "cosmos/evidence/v1beta1/evidence.proto";
 import "cosmos/base/v1beta1/coin.proto";
 
 //
@@ -102,6 +103,22 @@ message ConsumerRemovalProposal {
       [ (gogoproto.stdtime) = true, (gogoproto.nullable) = false ];
 }
 
+// EquivocationProposal is a governance proposal on the provider chain to
+// punish a validator for equivocation on a consumer chain.
+// 
+// This type is only used internally to the consumer CCV module.  
+// WARNING: This message is deprecated now that equivocations can be submitted
+// and verified automatically on the provider. (see SubmitConsumerDoubleVoting in proto/interchain-security/ccv/provider/v1/tx.proto).
+message EquivocationProposal {
+  option deprecated = true;
+  // the title of the proposal
+  string title = 1;
+// the description of the proposal
+  string description = 2;
+  // the list of equivocations that will be processed
+  repeated cosmos.evidence.v1beta1.Equivocation equivocations = 3;
+}
+
 // ChangeRewardDenomsProposal is a governance proposal on the provider chain to
 // mutate the set of denoms accepted by the provider as rewards.
 message ChangeRewardDenomsProposal {

x/ccv/provider/types/codec.go

@@ -27,20 +27,22 @@ func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
 		(*sdk.Msg)(nil),
 		&MsgAssignConsumerKey{},
 	)
+	registry.RegisterImplementations(
+		(*govv1beta1.Content)(nil),
+		&EquivocationProposal{},
+	)
+	registry.RegisterImplementations(
+		(*govv1beta1.Content)(nil),
+		&ChangeRewardDenomsProposal{},
+	)
 	registry.RegisterImplementations(
 		(*sdk.Msg)(nil),
 		&MsgSubmitConsumerMisbehaviour{},
 	)
-
 	registry.RegisterImplementations(
 		(*sdk.Msg)(nil),
 		&MsgSubmitConsumerDoubleVoting{},
 	)
-	registry.RegisterImplementations(
-		(*govv1beta1.Content)(nil),
-		&ChangeRewardDenomsProposal{},
-	)
-
 	msgservice.RegisterMsgServiceDesc(registry, &_Msg_serviceDesc)
 }
 

x/ccv/provider/types/proposal.go

@@ -1,36 +1,40 @@
 package types
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 	time "time"
 
 	clienttypes "github.com/cosmos/ibc-go/v7/modules/core/02-client/types"
 
 	errorsmod "cosmossdk.io/errors"
-
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	govv1beta1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
 
+	evidencetypes "github.com/cosmos/cosmos-sdk/x/evidence/types"
 	ccvtypes "github.com/cosmos/interchain-security/v3/x/ccv/types"
 )
 
 const (
 	ProposalTypeConsumerAddition   = "ConsumerAddition"
 	ProposalTypeConsumerRemoval    = "ConsumerRemoval"
+	ProposalTypeEquivocation       = "Equivocation"
 	ProposalTypeChangeRewardDenoms = "ChangeRewardDenoms"
 )
 
 var (
 	_ govv1beta1.Content = &ConsumerAdditionProposal{}
 	_ govv1beta1.Content = &ConsumerRemovalProposal{}
 	_ govv1beta1.Content = &ChangeRewardDenomsProposal{}
+	_ govv1beta1.Content = &EquivocationProposal{}
 )
 
 func init() {
 	govv1beta1.RegisterProposalType(ProposalTypeConsumerAddition)
 	govv1beta1.RegisterProposalType(ProposalTypeConsumerRemoval)
 	govv1beta1.RegisterProposalType(ProposalTypeChangeRewardDenoms)
+	govv1beta1.RegisterProposalType(ProposalTypeEquivocation)
 }
 
 // NewConsumerAdditionProposal creates a new consumer addition proposal.
@@ -198,6 +202,40 @@ func (sccp *ConsumerRemovalProposal) ValidateBasic() error {
 	return nil
 }
 
+// NewEquivocationProposal creates a new equivocation proposal.
+// [DEPRECATED]: do not use
+func NewEquivocationProposal(title, description string, equivocations []*evidencetypes.Equivocation) govv1beta1.Content {
+	return &EquivocationProposal{
+		Title:         title,
+		Description:   description,
+		Equivocations: equivocations,
+	}
+}
+
+// ProposalRoute returns the routing key of an equivocation  proposal.
+func (sp *EquivocationProposal) ProposalRoute() string { return RouterKey }
+
+// ProposalType returns the type of a equivocation proposal.
+func (sp *EquivocationProposal) ProposalType() string {
+	return ProposalTypeEquivocation
+}
+
+// ValidateBasic runs basic stateless validity checks
+func (sp *EquivocationProposal) ValidateBasic() error {
+	if err := govv1beta1.ValidateAbstract(sp); err != nil {
+		return err
+	}
+	if len(sp.Equivocations) == 0 {
+		return errors.New("invalid equivocation proposal: empty equivocations")
+	}
+	for i := 0; i < len(sp.Equivocations); i++ {
+		if err := sp.Equivocations[i].ValidateBasic(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func NewChangeRewardDenomsProposal(title, description string,
 	denomsToAdd, denomsToRemove []string,
 ) govv1beta1.Content {