39 lines
1.1 KiB
Solidity
39 lines
1.1 KiB
Solidity
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pragma solidity ^0.5.16;
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// https://docs.synthetix.io/contracts/source/contracts/owned
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contract Owned {
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address public owner;
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address public nominatedOwner;
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constructor(address _owner) public {
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require(_owner != address(0), "Owner address cannot be 0");
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owner = _owner;
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emit OwnerChanged(address(0), _owner);
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}
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function nominateNewOwner(address _owner) external onlyOwner {
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nominatedOwner = _owner;
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emit OwnerNominated(_owner);
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}
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function acceptOwnership() external {
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require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
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emit OwnerChanged(owner, nominatedOwner);
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owner = nominatedOwner;
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nominatedOwner = address(0);
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}
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modifier onlyOwner {
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_onlyOwner();
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_;
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}
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function _onlyOwner() private view {
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require(msg.sender == owner, "Only the contract owner may perform this action");
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}
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event OwnerNominated(address newOwner);
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event OwnerChanged(address oldOwner, address newOwner);
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}
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