> For the complete documentation index, see [llms.txt](https://docs.liquidcollective.io/eth/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.liquidcollective.io/eth/technical-reference/smart-contracts/interfaces/ifirewall.md).

# IFirewall

*Figment*

> Firewall

This interface exposes methods to accept calls to admin-level functions of an underlying contract.

## Methods

### allowExecutor

```solidity
function allowExecutor(bytes4 _functionSelector, bool _executorCanCall) external nonpayable
```

Sets the permission for a function selector

#### Parameters

| Name               | Type   | Description                                         |
| ------------------ | ------ | --------------------------------------------------- |
| \_functionSelector | bytes4 | Method signature on which the permission is changed |
| \_executorCanCall  | bool   | True if selector is callable by the executor        |

### destination

```solidity
function destination() external view returns (address)
```

Retrieve the destination address

#### Returns

| Name | Type    | Description             |
| ---- | ------- | ----------------------- |
| \_0  | address | The destination address |

### executor

```solidity
function executor() external view returns (address)
```

Retrieve the executor address

#### Returns

| Name | Type    | Description          |
| ---- | ------- | -------------------- |
| \_0  | address | The executor address |

### executorCanCall

```solidity
function executorCanCall(bytes4 _selector) external view returns (bool)
```

Returns true if the executor is allowed to perform a call on the given selector

#### Parameters

| Name       | Type   | Description            |
| ---------- | ------ | ---------------------- |
| \_selector | bytes4 | The selector to verify |

#### Returns

| Name | Type | Description                         |
| ---- | ---- | ----------------------------------- |
| \_0  | bool | True if executor is allowed to call |

### setExecutor

```solidity
function setExecutor(address _newExecutor) external nonpayable
```

Sets the executor address

#### Parameters

| Name          | Type    | Description                  |
| ------------- | ------- | ---------------------------- |
| \_newExecutor | address | New address for the executor |

## Events

### SetDestination

```solidity
event SetDestination(address indexed destination)
```

The stored destination address has been changed

#### Parameters

| Name                  | Type    | Description                 |
| --------------------- | ------- | --------------------------- |
| destination `indexed` | address | The new destination address |

### SetExecutor

```solidity
event SetExecutor(address indexed executor)
```

The stored executor address has been changed

#### Parameters

| Name               | Type    | Description              |
| ------------------ | ------- | ------------------------ |
| executor `indexed` | address | The new executor address |

### SetExecutorPermissions

```solidity
event SetExecutorPermissions(bytes4 selector, bool status)
```

The storage permission for a selector has been changed

#### Parameters

| Name     | Type   | Description                 |
| -------- | ------ | --------------------------- |
| selector | bytes4 | The 4 bytes method selector |
| status   | bool   | True if executor is allowed |


---

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