44 lines
1.8 KiB
Solidity
44 lines
1.8 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.6.12;
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pragma experimental ABIEncoderV2;
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import { Governance } from "../v1/Governance.sol";
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import { SafeMath } from "@openzeppelin/contracts-v3/math/SafeMath.sol";
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import { ITornadoVault } from "./interfaces/ITornadoVault.sol";
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/// @title Version 2 Governance contract of the tornado.cash governance
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contract GovernanceVaultUpgrade is Governance {
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using SafeMath for uint256;
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// vault which stores user TORN
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ITornadoVault public immutable userVault;
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// call Governance v1 constructor
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constructor(address _userVault) public Governance() {
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userVault = ITornadoVault(_userVault);
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}
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/// @notice Withdraws TORN from governance if conditions permit
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/// @param amount the amount of TORN to withdraw
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function unlock(uint256 amount) public virtual override {
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require(getBlockTimestamp() > canWithdrawAfter[msg.sender], "Governance: tokens are locked");
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lockedBalance[msg.sender] = lockedBalance[msg.sender].sub(amount, "Governance: insufficient balance");
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userVault.withdrawTorn(msg.sender, amount);
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}
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/// @notice checker for success on deployment
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/// @return returns precise version of governance
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function version() external pure virtual returns (string memory) {
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return "2.vault-migration";
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}
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/// @notice transfers tokens from the contract to the vault, withdrawals are unlock()
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/// @param owner account/contract which (this) spender will send to the user vault
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/// @param amount amount which spender will send to the user vault
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function _transferTokens(address owner, uint256 amount) internal virtual override {
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require(torn.transferFrom(owner, address(userVault), amount), "TORN: transferFrom failed");
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lockedBalance[owner] = lockedBalance[owner].add(amount);
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}
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}
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