fix(rollapp): validate rollapp token metadata

CHANGELOG.md

@@ -35,6 +35,13 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 # Changelog
 
+## Unreleased
+
+#### Bug Fixes
+
+- (rollapp) [#471](https://github.com/dymensionxyz/dymension/issues/471) Validate rollapp token metadata
+___
+
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),

ibctesting/denom_metadata_test.go

@@ -93,5 +93,6 @@ func (suite *DenomMetaDataTestSuite) TestDenomRegistationRollappToHub() {
 
 	metadata, found := ConvertToApp(suite.hubChain).BankKeeper.GetDenomMetaData(suite.hubChain.GetContext(), stakeVoucherDenom.IBCDenom())
 	suite.Require().True(found)
-	suite.Require().Equal("STAKE", metadata.Display)
+	suite.Equal("bigstake", metadata.Display)
+	suite.Equal("BIGSTAKE", metadata.Symbol)
 }

ibctesting/utils_test.go

@@ -66,6 +66,7 @@ func (suite *IBCTestUtilSuite) CreateRollapp() {
 }
 
 func (suite *IBCTestUtilSuite) CreateRollappWithMetadata(denom string) {
+	displayDenom := "big" + denom
 	msgCreateRollapp := rollapptypes.NewMsgCreateRollapp(
 		suite.hubChain.SenderAccount.GetAddress().String(),
 		suite.rollappChain.ChainID,
@@ -80,14 +81,14 @@ func (suite *IBCTestUtilSuite) CreateRollappWithMetadata(denom string) {
 						Exponent: 0,
 					},
 					{
-						Denom:    "big" + denom,
+						Denom:    displayDenom,
 						Exponent: 6,
 					},
 				},
 				Description: "stake as rollapp token",
-				Display:     strings.ToUpper(denom),
-				Name:        strings.ToUpper(denom),
-				Symbol:      strings.ToUpper(denom),
+				Display:     displayDenom,
+				Name:        displayDenom,
+				Symbol:      strings.ToUpper(displayDenom),
 			},
 		},
 	)

x/rollapp/keeper/msg_server_create_rollapp.go

@@ -61,7 +61,7 @@ func (k msgServer) CreateRollapp(goCtx context.Context, msg *types.MsgCreateRoll
 		PermissionedAddresses: msg.PermissionedAddresses,
 	}
 
-	//copy Tokenmetadata
+	//copy TokenMetadata
 	rollapp.TokenMetadata = make([]*types.TokenMetadata, len(msg.Metadatas))
 	for i := range msg.Metadatas {
 		rollapp.TokenMetadata[i] = &msg.Metadatas[i]
@@ -70,6 +70,7 @@ func (k msgServer) CreateRollapp(goCtx context.Context, msg *types.MsgCreateRoll
 	if len(msg.Metadatas) == 0 {
 		ctx.Logger().Info("No token metadata provided")
 	}
+
 	// Write rollapp information to the store
 	k.SetRollapp(ctx, rollapp)
 

x/rollapp/types/errors.go

@@ -30,4 +30,5 @@ var (
 	ErrInvalidRollappID                    = sdkerrors.Register(ModuleName, 1020, "invalid rollapp-id")
 	ErrEIP155Exists                        = sdkerrors.Register(ModuleName, 1021, "EIP155 already exist; must use unique EIP155 identifier")
 	ErrRollappsDisabled                    = sdkerrors.Register(ModuleName, 1022, "rollapps are disabled")
+	ErrInvalidTokenMetadata                = sdkerrors.Register(ModuleName, 1023, "invalid token metadata")
 )

x/rollapp/types/message_create_rollapp.go

@@ -69,5 +69,14 @@ func (msg *MsgCreateRollapp) ValidateBasic() error {
 		}
 	}
 
+	// verifies that token metadata, if any, must be valid
+	if len(msg.GetMetadatas()) > 0 {
+		for _, metadata := range msg.GetMetadatas() {
+			if err := metadata.Validate(); err != nil {
+				return sdkerrors.Wrapf(ErrInvalidTokenMetadata, "%s: %v", metadata.Base, err)
+			}
+		}
+	}
+
 	return nil
 }

x/rollapp/types/message_create_rollapp_test.go

@@ -58,6 +58,42 @@ func TestMsgCreateRollapp_ValidateBasic(t *testing.T) {
 				PermissionedAddresses: []string{seqDupAddr, "invalid permissioned address"},
 			},
 			err: ErrInvalidPermissionedAddress,
+		}, {
+			name: "valid token metadata",
+			msg: MsgCreateRollapp{
+				Creator:       sample.AccAddress(),
+				MaxSequencers: 1,
+				Metadatas: []TokenMetadata{{
+					Description: "valid",
+					DenomUnits: []*DenomUnit{
+						{Denom: "uvalid", Exponent: 0},
+						{Denom: "valid", Exponent: 18},
+					},
+					Base:    "uvalid",
+					Display: "valid",
+					Name:    "valid",
+					Symbol:  "VALID",
+				}},
+			},
+			err: nil,
+		}, {
+			name: "invalid token metadata", // just trigger one case to see if validation is done or not
+			msg: MsgCreateRollapp{
+				Creator:       sample.AccAddress(),
+				MaxSequencers: 1,
+				Metadatas: []TokenMetadata{{
+					Description: "valid",
+					DenomUnits: []*DenomUnit{
+						{Denom: "uvalid", Exponent: 0},
+						{Denom: "valid", Exponent: 18},
+					},
+					Base:    "uvalid",
+					Display: "valid",
+					Name:    "", // empty
+					Symbol:  "VALID",
+				}},
+			},
+			err: ErrInvalidTokenMetadata,
 		},
 	}
 	for _, tt := range tests {

x/rollapp/types/token_metadata.go

@@ -0,0 +1,41 @@
+package types
+
+import (
+	"fmt"
+	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
+)
+
+// Validate performs a basic validation of the coin metadata fields.
+// Inherits from x/bank metadata and following same spec of x/bank/types/metadata.go
+func (m *TokenMetadata) Validate() error {
+	if m == nil {
+		return fmt.Errorf("token metadata cannot be nil")
+	}
+
+	bankMetadata := m.ConvertToBankMetadata()
+	return bankMetadata.Validate()
+}
+
+// ConvertToBankMetadata converts TokenMetadata to Metadata of x/bank/types
+func (m *TokenMetadata) ConvertToBankMetadata() banktypes.Metadata {
+	var denomUnits []*banktypes.DenomUnit
+
+	for _, denomUnit := range m.DenomUnits {
+		denomUnits = append(denomUnits, &banktypes.DenomUnit{
+			Denom:    denomUnit.Denom,
+			Exponent: denomUnit.Exponent,
+			Aliases:  denomUnit.Aliases,
+		})
+	}
+
+	return banktypes.Metadata{
+		Description: m.Description,
+		DenomUnits:  denomUnits,
+		Base:        m.Base,
+		Display:     m.Display,
+		Name:        m.Name,
+		Symbol:      m.Symbol,
+		URI:         m.URI,
+		URIHash:     m.URIHash,
+	}
+}