MKR Vote Proxy

mkr-vote-proxy.sol

constructor(DSChief _chief, address _cold, address _hot) public {
    chief = _chief;
    cold = _cold;
    hot = _hot;

    gov = chief.GOV();
    iou = chief.IOU();
    gov.approve(address(chief));
    iou.approve(address(chief));
  }

  modifier auth() {
    require(msg.sender == hot || msg.sender == cold, "Sender must be a Cold or Hot Wallet");
    _;
  }

  function lock() public auth {
    if (gov.balanceOf(address(this)) > 0) {
      chief.lock(gov.balanceOf(address(this)));
    }
  }

  function release() public auth {
    chief.free(chief.deposits(address(this)));
    gov.push(cold, gov.balanceOf(address(this)));
  }

  function voteAddresses(address[] memory issues) public auth returns (bytes32) {
    lock();
    return chief.vote(issues);
  }
}