tokenbridge-contracts/contracts/upgradeability/OwnedUpgradeabilityProxy.sol

71 lines
2.7 KiB
Solidity

pragma solidity 0.4.24;
import "./UpgradeabilityProxy.sol";
import "./UpgradeabilityOwnerStorage.sol";
/**
* @title OwnedUpgradeabilityProxy
* @dev This contract combines an upgradeability proxy with basic authorization control functionalities
*/
contract OwnedUpgradeabilityProxy is UpgradeabilityOwnerStorage, UpgradeabilityProxy {
/**
* @dev Event to show ownership has been transferred
* @param previousOwner representing the address of the previous owner
* @param newOwner representing the address of the new owner
*/
event ProxyOwnershipTransferred(address previousOwner, address newOwner);
/**
* @dev the constructor sets the original owner of the contract to the sender account.
*/
constructor() public {
setUpgradeabilityOwner(msg.sender);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyUpgradeabilityOwner() {
require(msg.sender == upgradeabilityOwner());
/* solcov ignore next */
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferProxyOwnership(address newOwner) external onlyUpgradeabilityOwner {
require(newOwner != address(0));
emit ProxyOwnershipTransferred(upgradeabilityOwner(), newOwner);
setUpgradeabilityOwner(newOwner);
}
/**
* @dev Allows the upgradeability owner to upgrade the current version of the proxy.
* @param version representing the version name of the new implementation to be set.
* @param implementation representing the address of the new implementation to be set.
*/
function upgradeTo(uint256 version, address implementation) public onlyUpgradeabilityOwner {
_upgradeTo(version, implementation);
}
/**
* @dev Allows the upgradeability owner to upgrade the current version of the proxy and call the new implementation
* to initialize whatever is needed through a low level call.
* @param version representing the version name of the new implementation to be set.
* @param implementation representing the address of the new implementation to be set.
* @param data represents the msg.data to bet sent in the low level call. This parameter may include the function
* signature of the implementation to be called with the needed payload
*/
function upgradeToAndCall(uint256 version, address implementation, bytes data)
external
payable
onlyUpgradeabilityOwner
{
upgradeTo(version, implementation);
// solhint-disable-next-line avoid-call-value
require(address(this).call.value(msg.value)(data));
}
}