MultiOwnable

Git Source

Auth contract allowing multiple owners, each identified as bytes. Supports EOA addresses, WebAuthn public keys, and smart contract owners.

State Variables

MULTI_OWNABLE_STORAGE_LOCATION

Slot for the MultiOwnableStorage struct in storage. Computed from keccak256(abi.encode(uint256(keccak256("capsign.storage.MultiOwnable")) - 1)) & ~bytes32(uint256(0xff)) Follows ERC-7201 (see https://eips.ethereum.org/EIPS/eip-7201).

bytes32 private constant MULTI_OWNABLE_STORAGE_LOCATION =
    0x2433c1232f895d776590506d5dd701a63700303d9358e18771ba0e4c84d30200;

EIP1271_MAGIC_VALUE

bytes4 private constant EIP1271_MAGIC_VALUE = 0x1626ba7e;

Functions

onlyOwner

modifier onlyOwner() virtual;

addOwnerAddress

function addOwnerAddress(address owner) external virtual onlyOwner;

addOwnerPublicKey

function addOwnerPublicKey(bytes32 x, bytes32 y) external virtual onlyOwner;

addGovernanceOwner

Add a smart contract as an owner with governance delegation

function addGovernanceOwner(address contractOwner) external virtual onlyOwner;

Parameters

Name	Type	Description
contractOwner	address	Address of the smart contract that will own this wallet

removeGovernanceOwner

Remove a governance owner

function removeGovernanceOwner(uint256 index, bytes calldata owner) external virtual onlyOwner;

Parameters

Name	Type	Description
index	uint256	Index of the owner to remove
owner	bytes	Owner data to verify

removeOwnerAtIndex

function removeOwnerAtIndex(uint256 index, bytes calldata owner) external virtual onlyOwner;

removeLastOwner

function removeLastOwner(uint256 index, bytes calldata owner) external virtual onlyOwner;

isOwnerAddress

function isOwnerAddress(address account) public view virtual returns (bool);

isOwnerPublicKey

function isOwnerPublicKey(bytes32 x, bytes32 y) public view virtual returns (bool);

isOwnerBytes

function isOwnerBytes(bytes memory account) public view virtual returns (bool);

isGovernanceDelegate

Check if an address is a governance delegate owner

function isGovernanceDelegate(address account) public view virtual returns (bool);

ownerAtIndex

function ownerAtIndex(uint256 index) public view virtual returns (bytes memory);

nextOwnerIndex

function nextOwnerIndex() public view virtual returns (uint256);

ownerCount

function ownerCount() public view virtual returns (uint256);

removedOwnersCount

function removedOwnersCount() public view virtual returns (uint256);

_initializeOwners

function _initializeOwners(bytes[] memory owners) internal virtual;

_addOwnerAtIndex

function _addOwnerAtIndex(bytes memory owner, uint256 index) internal virtual;

_removeOwnerAtIndex

function _removeOwnerAtIndex(uint256 index, bytes calldata owner) internal virtual;

_checkOwner

Enhanced owner check supporting EOAs, self-calls, and smart contract governance

function _checkOwner() internal view virtual;

_isValidGovernanceOwner

Check if a smart contract is a valid governance owner and can execute

function _isValidGovernanceOwner(address contractOwner) internal view returns (bool);

_supportsGovernanceInterface

Verify a contract supports the governance delegation interface

function _supportsGovernanceInterface(address contractAddr) internal view returns (bool);

_getMultiOwnableStorage

function _getMultiOwnableStorage() internal pure returns (MultiOwnableStorage storage $);

Events

AddOwner

event AddOwner(uint256 indexed index, bytes owner);

RemoveOwner

event RemoveOwner(uint256 indexed index, bytes owner);

GovernanceDelegateAdded

event GovernanceDelegateAdded(address indexed delegate);

GovernanceDelegateRemoved

event GovernanceDelegateRemoved(address indexed delegate);

Errors

Unauthorized

error Unauthorized();

AlreadyOwner

error AlreadyOwner(bytes owner);

NoOwnerAtIndex

error NoOwnerAtIndex(uint256 index);

WrongOwnerAtIndex

error WrongOwnerAtIndex(uint256 index, bytes expectedOwner, bytes actualOwner);

InvalidOwnerBytesLength

error InvalidOwnerBytesLength(bytes owner);

InvalidEthereumAddressOwner

error InvalidEthereumAddressOwner(bytes owner);

LastOwner

error LastOwner();

NotLastOwner

error NotLastOwner(uint256 ownersRemaining);

InvalidGovernanceDelegate

error InvalidGovernanceDelegate(address delegate);