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MultiOwnable.sol
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MultiOwnable.sol
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pragma solidity ^0.4.18;
/**
* @title MultiOwnable
* @dev The MultiOwnable contract has owners addresses and provides basic authorization control
* functions, this simplifies the implementation of "users permissions".
*/
contract MultiOwnable {
address public manager; // address used to set owners
address[] public owners;
mapping(address => bool) public ownerByAddress;
event AddOwner(address owner);
event RemoveOwner(address owner);
modifier onlyOwner() {
require(ownerByAddress[msg.sender] == true);
_;
}
/**
* @dev MultiOwnable constructor sets the manager
*/
function MultiOwnable() public {
manager = msg.sender;
_addOwner(msg.sender);
}
/**
* @dev Function to add owner address
*/
function addOwner(address _owner) public {
require(msg.sender == manager);
_addOwner(_owner);
}
/**
* @dev Function to remove owner address
*/
function removeOwner(address _owner) public {
require(msg.sender == manager);
_removeOwner(_owner);
}
function _addOwner(address _owner) internal {
ownerByAddress[_owner] = true;
owners.push(_owner);
AddOwner(_owner);
}
function _removeOwner(address _owner) internal {
if (owners.length == 0)
return;
ownerByAddress[_owner] = false;
uint id = indexOf(_owner);
remove(id);
RemoveOwner(_owner);
}
function getOwners() public constant returns (address[]) {
return owners;
}
function indexOf(address value) internal returns(uint) {
uint i = 0;
while (i < owners.length) {
if (owners[i] == value) {
break;
}
i++;
}
return i;
}
function remove(uint index) internal {
if (index >= owners.length) return;
for (uint i = index; i<owners.length-1; i++){
owners[i] = owners[i+1];
}
delete owners[owners.length-1];
owners.length--;
}
}