add back encoding

ethereum/eip712/encoding.go

@@ -112,9 +112,9 @@ func decodeAminoSignDoc(signDocBytes []byte) (apitypes.TypedData, error) {
 		msgs[i] = m
 	}
 
-	// if err := validatePayloadMessages(msgs); err != nil {
-	// 	return apitypes.TypedData{}, err
-	// }
+	if err := validatePayloadMessages(msgs); err != nil {
+		return apitypes.TypedData{}, err
+	}
 
 	chainID, err := types.ParseChainID(aminoDoc.ChainID)
 	if err != nil {
@@ -224,27 +224,27 @@ func validateCodecInit() error {
 
 // validatePayloadMessages ensures that the transaction messages can be represented in an EIP-712
 // encoding by checking that messages exist and share a single signer.
-// func validatePayloadMessages(msgs []sdk.Msg) error {
-// 	if len(msgs) == 0 {
-// 		return errors.New("unable to build EIP-712 payload: transaction does contain any messages")
-// 	}
-
-// 	var msgSigner sdk.AccAddress
-
-// 	for i, m := range msgs {
-// 		if len(m.GetSigners()) != 1 {
-// 			return errors.New("unable to build EIP-712 payload: expect exactly 1 signer")
-// 		}
-
-// 		if i == 0 {
-// 			msgSigner = m.GetSigners()[0]
-// 			continue
-// 		}
-
-// 		if !msgSigner.Equals(m.GetSigners()[0]) {
-// 			return errors.New("unable to build EIP-712 payload: multiple signers detected")
-// 		}
-// 	}
-
-// 	return nil
-// }
+func validatePayloadMessages(msgs []sdk.Msg) error {
+	if len(msgs) == 0 {
+		return errors.New("unable to build EIP-712 payload: transaction does contain any messages")
+	}
+
+	var msgSigner sdk.AccAddress
+
+	for i, m := range msgs {
+		if len(m.(sdk.LegacyMsg).GetSigners()) != 1 {
+			return errors.New("unable to build EIP-712 payload: expect exactly 1 signer")
+		}
+
+		if i == 0 {
+			msgSigner = m.(sdk.LegacyMsg).GetSigners()[0]
+			continue
+		}
+
+		if !msgSigner.Equals(m.(sdk.LegacyMsg).GetSigners()[0]) {
+			return errors.New("unable to build EIP-712 payload: multiple signers detected")
+		}
+	}
+
+	return nil
+}