Merge pull request #357 from BitCannaGlobal/047-burn-module-whitelist

WhiteList control

x/burn/keeper/msg_server_burn_coins_action.go

@@ -9,10 +9,21 @@ import (
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 )
 
+// List of auth. addresses (whitelist)
+var authorizedAddresses = map[string]bool{
+	"bcna1tdpec339xrucmmr4x73teu3lc2phq45mv07z9n": true, // Vesting account
+	"bcna1465kg4xaa5sl3vlm02zwe6y7jqltyncvcsygxr": true, // Business Development
+	"bcna16pczhqlsglmjyyap3785cqnpq30q430jkgw4gk": true, // Marketing
+	"bcna1rp6fpd8lry8kgmxaermw8eqlkgr4q9lv3u0eae": true, // Test1
+	"bcna1h2sz97wffluqtt07zmkky3cvuywv6dzq38zr9r": true, // Test2
+	"bcna1zvxldjgetj5u9wah0t8fnz229533xzsmz8y5js": true, // Test3
+}
+
 // Move coins from sender to Bank account module and then the module burns the coins.
 func (k msgServer) BurnCoinsAction(goCtx context.Context, msg *types.MsgBurnCoinsAction) (*types.MsgBurnCoinsActionResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 
+	// Validate the address
 	creatorAddr, err := sdk.AccAddressFromBech32(msg.Creator)
 	if err != nil {
 		return nil, sdkerrors.ErrInvalidAddress.Wrapf("invalid creator address: %s", err)
@@ -34,6 +45,11 @@ func (k msgServer) BurnCoinsAction(goCtx context.Context, msg *types.MsgBurnCoin
 		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidCoins, coins.String())
 	}
 
+	// Check if the address of the creator is whitelisted
+	if _, ok := authorizedAddresses[msg.Creator]; !ok {
+		return nil, sdkerrors.ErrUnauthorized.Wrap("address not authorized to burn coins")
+	}
+
 	// Gets the balance of the sender to check if are there enough coins.
 	balance := k.bankKeeper.GetBalance(ctx, creatorAddr, msg.Amount.Denom)
 	if balance.Amount.LT(msg.Amount.Amount) {