d-bis/dodo-contractV2
4
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[audit]#5 add claim ownership to ownable contract

Browse Source
This commit is contained in:
mingda
2020-07-08 17:53:01 +08:00
parent 9a1657d90d
commit 1707e827b0
2 changed files with 14 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
contracts/lib/Ownable.sol
View File

@@ -16,9 +16,12 @@ pragma experimental ABIEncoderV2;
*/
contract Ownable {
address public _OWNER_;
address public _NEW_OWNER_;
// ============ Events ============
event OwnershipTransferPrepared(address indexed previousOwner, address indexed newOwner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
// ============ Modifiers ============
@@ -37,7 +40,14 @@ contract Ownable {
function transferOwnership(address newOwner) external onlyOwner {
require(newOwner != address(0), "INVALID_OWNER");
emit OwnershipTransferred(_OWNER_, newOwner);
_OWNER_ = newOwner;
emit OwnershipTransferPrepared(_OWNER_, newOwner);
_NEW_OWNER_ = newOwner;
}
function claimOwnership() external {
require(msg.sender == _NEW_OWNER_, "INVALID_CLAIM");
emit OwnershipTransferred(_OWNER_, _NEW_OWNER_);
_OWNER_ = _NEW_OWNER_;
_NEW_OWNER_ = address(0);
}
}