Default use owner function to get address

[aefhm]

Description

Confidential EVMs such as Sapphire prevents direct getStorageAt calls from accessing raw slot data in order to allow a smart contract to permission access to its own state.

The default proxy supports the EIP173 spec function owner which appears to be the smoothest path towards supporting additional EVM like networks.

Would y'all find this compatible? An alternative solution would be to compare msg.data with a set of predefined keys and to return the storage slot.

hardhat-deploy/solc_0.8/proxy/EIP173Proxy.sol

Lines 29 to 31 in e372789

	function owner() external view returns (address) {
	return _owner();
	}

Relates to issue #530.

[wighawag]

Happy to have that in, but it should support both.
it should check if the proxy has an owner function and uses it if it does, else fallback on reading storage slot

[aefhm]

Happy to have that in, but it should support both. it should check if the proxy has an owner function and uses it if it does, else fallback on reading storage slot

Appreciate the feedback. Will do.

[aefhm]

@wighawag one more look please?

[wighawag]

Thanks!
available in 0.12.3