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fix: prevent mapping multiple denoms to same ERC20 #1346

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merged 1 commit into from
Mar 5, 2025
Merged

fix: prevent mapping multiple denoms to same ERC20 #1346

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9 changes: 9 additions & 0 deletions x/skyway/keeper/msg_server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -492,6 +492,15 @@ func (k *msgServer) SetERC20ToTokenDenom(ctx context.Context, msg *types.MsgSetE
return nil, sdkerrors.Wrap(types.ErrUnauthorized, "missing token admin permission")
}

d, err := k.GetDenomOfERC20(ctx, ci.ChainReferenceID, *erc20)
if err != nil && err != types.ErrDenomNotFound {
return nil, sdkerrors.Wrap(types.ErrInternal, "duplicate binding lookup failed")
}

if len(d) > 0 {
return nil, sdkerrors.Wrap(types.ErrDuplicateBinding, "token already bridged")
}

if err := k.setDenomToERC20(ctx, ci.ChainReferenceID, msg.Denom, *erc20); err != nil {
return nil, sdkerrors.Wrap(types.ErrInternal, err.Error())
}
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1 change: 1 addition & 0 deletions x/skyway/types/errors.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,4 +24,5 @@ var (
ErrDenomNotFound = sdkerrors.Register(ModuleName, 21, "denom not found")
ErrERC20NotFound = sdkerrors.Register(ModuleName, 22, "erc20 not found")
ErrUnauthorized = sdkerrors.Register(ModuleName, 23, "unauthorized")
ErrDuplicateBinding = sdkerrors.Register(ModuleName, 24, "erc20 already bound to denom")
)