88 lines
2.2 KiB
Solidity
88 lines
2.2 KiB
Solidity
/*
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Copyright 2020 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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import {IERC20} from "../intf/IERC20.sol";
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import {SafeERC20} from "../lib/SafeERC20.sol";
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import {InitializableOwnable} from "../lib/InitializableOwnable.sol";
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/**
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* @title DODOApprove
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* @author DODO Breeder
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*
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* @notice Handle authorizations in DODO platform
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*/
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contract DODOApprove is InitializableOwnable {
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using SafeERC20 for IERC20;
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// ============ Storage ============
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uint256 private constant _TIMELOCK_DURATION_ = 3 days;
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uint256 private constant _TIMELOCK_EMERGENCY_DURATION_ = 24 hours;
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uint256 public _TIMELOCK_;
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address public _PENDING_DODO_PROXY_;
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address public _DODO_PROXY_;
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// ============ Events ============
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event SetDODOProxy(address indexed oldProxy, address indexed newProxy);
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// ============ Modifiers ============
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modifier notLocked() {
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require(
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_TIMELOCK_ <= block.timestamp,
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"SetProxy is timelocked"
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);
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_;
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}
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function init(address owner, address initProxyAddress) external {
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initOwner(owner);
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_DODO_PROXY_ = initProxyAddress;
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}
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function unlockSetProxy(address newDodoProxy) public onlyOwner {
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if(_DODO_PROXY_ == address(0))
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_TIMELOCK_ = block.timestamp + _TIMELOCK_EMERGENCY_DURATION_;
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else
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_TIMELOCK_ = block.timestamp + _TIMELOCK_DURATION_;
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_PENDING_DODO_PROXY_ = newDodoProxy;
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}
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function lockSetProxy() public onlyOwner {
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_PENDING_DODO_PROXY_ = address(0);
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_TIMELOCK_ = 0;
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}
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function setDODOProxy() external onlyOwner notLocked() {
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emit SetDODOProxy(_DODO_PROXY_, _PENDING_DODO_PROXY_);
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_DODO_PROXY_ = _PENDING_DODO_PROXY_;
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lockSetProxy();
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}
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function claimTokens(
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address token,
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address who,
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address dest,
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uint256 amount
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) external {
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require(msg.sender == _DODO_PROXY_, "DODOApprove:Access restricted");
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if (amount > 0) {
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IERC20(token).safeTransferFrom(who, dest, amount);
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}
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}
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function getDODOProxy() public view returns (address) {
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return _DODO_PROXY_;
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}
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}
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