f49721576f
* Add an initial document for our code style * Remove abbreviations from parameters * Rename the param in AddressUtils * fix comment
63 lines
1.6 KiB
Solidity
63 lines
1.6 KiB
Solidity
pragma solidity ^0.4.24;
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import "./Ownable.sol";
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import "../access/rbac/RBAC.sol";
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/**
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* @title Superuser
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* @dev The Superuser contract defines a single superuser who can transfer the ownership
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* of a contract to a new address, even if he is not the owner.
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* A superuser can transfer his role to a new address.
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*/
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contract Superuser is Ownable, RBAC {
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string public constant ROLE_SUPERUSER = "superuser";
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constructor () public {
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addRole(msg.sender, ROLE_SUPERUSER);
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}
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/**
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* @dev Throws if called by any account that's not a superuser.
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*/
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modifier onlySuperuser() {
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checkRole(msg.sender, ROLE_SUPERUSER);
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_;
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}
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modifier onlyOwnerOrSuperuser() {
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require(msg.sender == owner || isSuperuser(msg.sender));
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_;
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}
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/**
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* @dev getter to determine if an account has superuser role
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*/
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function isSuperuser(address _account)
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public
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view
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returns (bool)
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{
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return hasRole(_account, ROLE_SUPERUSER);
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}
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/**
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* @dev Allows the current superuser to transfer his role to a newSuperuser.
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* @param _newSuperuser The address to transfer ownership to.
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*/
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function transferSuperuser(address _newSuperuser) public onlySuperuser {
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require(_newSuperuser != address(0));
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removeRole(msg.sender, ROLE_SUPERUSER);
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addRole(_newSuperuser, ROLE_SUPERUSER);
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}
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/**
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* @dev Allows the current superuser or owner to transfer control of the contract to a newOwner.
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* @param _newOwner The address to transfer ownership to.
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*/
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function transferOwnership(address _newOwner) public onlyOwnerOrSuperuser {
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_transferOwnership(_newOwner);
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}
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}
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