You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.9 KiB
97 lines
2.9 KiB
// SPDX-License-Identifier: MIT
|
|
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
|
|
|
|
pragma solidity ^0.8.19;
|
|
|
|
import {Context} from "../utils/Context.sol";
|
|
|
|
/**
|
|
* @dev Contract module which provides a basic access control mechanism, where
|
|
* there is an account (an owner) that can be granted exclusive access to
|
|
* specific functions.
|
|
*
|
|
* The initial owner is set to the address provided by the deployer. This can
|
|
* later be changed with {transferOwnership}.
|
|
*
|
|
* This module is used through inheritance. It will make available the modifier
|
|
* `onlyOwner`, which can be applied to your functions to restrict their use to
|
|
* the owner.
|
|
*/
|
|
abstract contract Ownable is Context {
|
|
address private _owner;
|
|
|
|
/**
|
|
* @dev The caller account is not authorized to perform an operation.
|
|
*/
|
|
error OwnableUnauthorizedAccount(address account);
|
|
|
|
/**
|
|
* @dev The owner is not a valid owner account. (eg. `address(0)`)
|
|
*/
|
|
error OwnableInvalidOwner(address owner);
|
|
|
|
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
|
|
|
|
/**
|
|
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
|
|
*/
|
|
constructor(address initialOwner) {
|
|
_transferOwnership(initialOwner);
|
|
}
|
|
|
|
/**
|
|
* @dev Throws if called by any account other than the owner.
|
|
*/
|
|
modifier onlyOwner() {
|
|
_checkOwner();
|
|
_;
|
|
}
|
|
|
|
/**
|
|
* @dev Returns the address of the current owner.
|
|
*/
|
|
function owner() public view virtual returns (address) {
|
|
return _owner;
|
|
}
|
|
|
|
/**
|
|
* @dev Throws if the sender is not the owner.
|
|
*/
|
|
function _checkOwner() internal view virtual {
|
|
if (owner() != _msgSender()) {
|
|
revert OwnableUnauthorizedAccount(_msgSender());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @dev Leaves the contract without owner. It will not be possible to call
|
|
* `onlyOwner` functions. Can only be called by the current owner.
|
|
*
|
|
* NOTE: Renouncing ownership will leave the contract without an owner,
|
|
* thereby disabling any functionality that is only available to the owner.
|
|
*/
|
|
function renounceOwnership() public virtual onlyOwner {
|
|
_transferOwnership(address(0));
|
|
}
|
|
|
|
/**
|
|
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
|
* Can only be called by the current owner.
|
|
*/
|
|
function transferOwnership(address newOwner) public virtual onlyOwner {
|
|
if (newOwner == address(0)) {
|
|
revert OwnableInvalidOwner(address(0));
|
|
}
|
|
_transferOwnership(newOwner);
|
|
}
|
|
|
|
/**
|
|
* @dev Transfers ownership of the contract to a new account (`newOwner`).
|
|
* Internal function without access restriction.
|
|
*/
|
|
function _transferOwnership(address newOwner) internal virtual {
|
|
address oldOwner = _owner;
|
|
_owner = newOwner;
|
|
emit OwnershipTransferred(oldOwner, newOwner);
|
|
}
|
|
}
|
|
|