fix(genesis transfers): wires the middleware correctly (#290)

app/app.go

@@ -233,12 +233,13 @@ var (
 		evmtypes.ModuleName:            {authtypes.Minter, authtypes.Burner}, // used for secure addition and subtraction of balance using module account
 		erc20types.ModuleName:          {authtypes.Minter, authtypes.Burner},
 		claimstypes.ModuleName:         nil,
-		hubgentypes.ModuleName:         {authtypes.Burner},
+		hubgentypes.ModuleName:         {authtypes.Minter},
 	}
 
 	// module accounts that are allowed to receive tokens
 	allowedReceivingModAcc = map[string]bool{
-		distrtypes.ModuleName: true,
+		distrtypes.ModuleName:  true,
+		hubgentypes.ModuleName: true,
 	}
 )
 
@@ -533,21 +534,23 @@ func NewRollapp(
 		),
 	)
 
-	app.TransferKeeper = transferkeeper.NewKeeper(
-		appCodec, keys[ibctransfertypes.StoreKey], app.GetSubspace(ibctransfertypes.ModuleName),
-		app.ClaimsKeeper, // ICS4 Wrapper: claims IBC middleware
-		app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
-		app.AccountKeeper, app.BankKeeper, scopedTransferKeeper,
-		app.Erc20Keeper, // Add ERC20 Keeper for ERC20 transfers
-	)
-
 	app.HubGenesisKeeper = hubgenkeeper.NewKeeper(
 		appCodec,
 		keys[hubgentypes.StoreKey],
 		app.GetSubspace(hubgentypes.ModuleName),
 		app.AccountKeeper,
 	)
 
+	genesisTransfersBlocker := hubgenkeeper.NewICS4Wrapper(app.ClaimsKeeper, app.HubGenesisKeeper) // ICS4 Wrapper: claims IBC middleware
+
+	app.TransferKeeper = transferkeeper.NewKeeper(
+		appCodec, keys[ibctransfertypes.StoreKey], app.GetSubspace(ibctransfertypes.ModuleName),
+		genesisTransfersBlocker,
+		app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
+		app.AccountKeeper, app.BankKeeper, scopedTransferKeeper,
+		app.Erc20Keeper, // Add ERC20 Keeper for ERC20 transfers
+	)
+
 	// NOTE: app.Erc20Keeper is already initialized elsewhere
 	// Set the ICS4 wrappers for custom module middlewares
 	app.ClaimsKeeper.SetICS4Wrapper(app.IBCKeeper.ChannelKeeper)
@@ -561,6 +564,12 @@ func NewRollapp(
 	transferStack = transfer.NewIBCModule(app.TransferKeeper)
 	transferStack = claims.NewIBCMiddleware(*app.ClaimsKeeper, transferStack)
 	transferStack = erc20.NewIBCMiddleware(app.Erc20Keeper, transferStack)
+	transferStack = hubgenkeeper.NewIBCModule(
+		transferStack,
+		app.TransferKeeper,
+		app.HubGenesisKeeper,
+		app.BankKeeper,
+	)
 
 	// Create static IBC router, add transfer route, then set and seal it
 	ibcRouter := ibcporttypes.NewRouter()