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VaultHealer V2

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// SPDX-License-Identifier: MIT

pragma solidity 0.8.6;

import "@openzeppelin/contracts/token/ERC20/Utils/SafeERC20.sol";

import "@openzeppelin/contracts/Utils/structs/EnumerableSet.sol";

import "@openzeppelin/contracts/Security/ReentrancyGuard.sol";

import "@openzeppelin/contracts/Utils/Math/SafeMath.sol";

import "@openzeppelin/contracts/access/Ownable.sol";

import "./libs/IStrategy.sol";

contract VaultApe is ReentrancyGuard, Ownable {

contract VaultHealer is ReentrancyGuard, Ownable {

using SafeMath for uint256;

using SafeERC20 for IERC20;

// Info of each user.

struct UserInfo {

uint256 shares; // How many LP tokens the user has provided.

}

struct PoolInfo {

IERC20 want; // Address of the want token.

address strat; // Strategy address that will auto compound want tokens

}

PoolInfo[] public poolInfo; // Info of each pool.

mapping(uint256 => mapping(address => UserInfo)) public userInfo; // Info of each user that stakes LP tokens.

mapping(address => bool) private strats;

event AddPool(address indexed strat);

event Deposit(address indexed user, uint256 indexed pid, uint256 amount);

event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);

event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

function poolLength() external view returns (uint256) {

return poolInfo.length;

}

/**

* @dev Add a new want to the pool. Can only be called by the owner.

function addPool(address _strat) external onlyOwner nonReentrant {

require(!strats[_strat], "Existing strategy");

poolInfo.push(

PoolInfo({

want: IERC20(IStrategy(_strat).wantAddress()),

strat: _strat

})

);

strats[_strat] = true;

resetSingleAllowance(poolInfo.length.sub(1));

emit AddPool(_strat);

}

// View function to see staked Want tokens on frontend.

function stakedWantTokens(uint256 _pid, address _user) external view returns (uint256) {

PoolInfo storage pool = poolInfo[_pid];

UserInfo storage user = userInfo[_pid][_user];

uint256 sharesTotal = IStrategy(pool.strat).sharesTotal();

uint256 wantLockedTotal = IStrategy(poolInfo[_pid].strat).wantLockedTotal();

if (sharesTotal == 0) {

return 0;

}

return user.shares.mul(wantLockedTotal).div(sharesTotal);

}

// Want tokens moved from user -> this -> Strat (compounding)

function deposit(uint256 _pid, uint256 _wantAmt) external nonReentrant {

_deposit(_pid, _wantAmt, msg.sender);

}

// For depositing for other users

function deposit(uint256 _pid, uint256 _wantAmt, address _to) external nonReentrant {

_deposit(_pid, _wantAmt, _to);

}

function _deposit(uint256 _pid, uint256 _wantAmt, address _to) internal {

PoolInfo storage pool = poolInfo[_pid];

require(pool.strat != address(0), "That strategy does not exist");

UserInfo storage user = userInfo[_pid][_to];

if (_wantAmt > 0) {

// Call must happen before transfer

uint256 wantBefore = IERC20(pool.want).balanceOf(address(this));

pool.want.safeTransferFrom(msg.sender, address(this), _wantAmt);

uint256 finalDeposit = IERC20(pool.want).balanceOf(address(this)).sub(wantBefore);

// Proper deposit amount for tokens with fees

uint256 sharesAdded = IStrategy(poolInfo[_pid].strat).deposit(_to, finalDeposit);

user.shares = user.shares.add(sharesAdded);

}

emit Deposit(_to, _pid, _wantAmt);

}

// Withdraw LP tokens from MasterChef.

function withdraw(uint256 _pid, uint256 _wantAmt) external nonReentrant {

_withdraw(_pid, _wantAmt, msg.sender);

}

// For withdrawing to other address

function withdraw(uint256 _pid, uint256 _wantAmt, address _to) external nonReentrant {

_withdraw(_pid, _wantAmt, _to);

}

function _withdraw(uint256 _pid, uint256 _wantAmt, address _to) internal {

PoolInfo storage pool = poolInfo[_pid];

require(pool.strat != address(0), "That strategy does not exist");

UserInfo storage user = userInfo[_pid][msg.sender];

uint256 wantLockedTotal = IStrategy(poolInfo[_pid].strat).wantLockedTotal();

uint256 sharesTotal = IStrategy(poolInfo[_pid].strat).sharesTotal();

require(user.shares > 0, "user.shares is 0");

require(sharesTotal > 0, "sharesTotal is 0");

// Withdraw want tokens

uint256 amount = user.shares.mul(wantLockedTotal).div(sharesTotal);

if (_wantAmt > amount) {

_wantAmt = amount;

}

if (_wantAmt > 0) {

uint256 sharesRemoved = IStrategy(poolInfo[_pid].strat).withdraw(msg.sender, _wantAmt);

if (sharesRemoved > user.shares) {

user.shares = 0;

} else {

user.shares = user.shares.sub(sharesRemoved);

}

uint256 wantBal = IERC20(pool.want).balanceOf(address(this));

if (wantBal < _wantAmt) {

_wantAmt = wantBal;

}

pool.want.safeTransfer(_to, _wantAmt);

}

emit Withdraw(msg.sender, _pid, _wantAmt);

}

// Withdraw everything from pool for yourself

function withdrawAll(uint256 _pid) external {

_withdraw(_pid, type(uint256).max, msg.sender);

}

function resetAllowances() external onlyOwner {

for (uint256 i=0; i<poolInfo.length; i++) {

PoolInfo storage pool = poolInfo[i];

pool.want.safeApprove(pool.strat, uint256(0));

pool.want.safeIncreaseAllowance(pool.strat, type(uint256).max);

}

function earnAll() external {

for (uint256 i=0; i<poolInfo.length; i++) {

if (!IStrategy(poolInfo[i].strat).paused())

IStrategy(poolInfo[i].strat).earn(_msgSender());

}

function earnSome(uint256[] memory pids) external {

for (uint256 i=0; i<pids.length; i++) {

if (poolInfo.length >= pids[i] && !IStrategy(poolInfo[pids[i]].strat).paused())

IStrategy(poolInfo[pids[i]].strat).earn(_msgSender());

}

function resetSingleAllowance(uint256 _pid) public onlyOwner {

PoolInfo storage pool = poolInfo[_pid];

pool.want.safeApprove(pool.strat, uint256(0));

pool.want.safeIncreaseAllowance(pool.strat, type(uint256).max);

}

Différences enregistrées

Texte d'origine

Ouvrir un fichier

// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;

import "@openzeppelin/contracts/token/ERC20/Utils/SafeERC20.sol";
import "@openzeppelin/contracts/Utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts/Security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/Utils/Math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

import "./libs/IStrategy.sol";

contract VaultApe is ReentrancyGuard, Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

// Info of each user.
    struct UserInfo {
        uint256 shares; // How many LP tokens the user has provided.
    }

struct PoolInfo {
        IERC20 want; // Address of the want token.
        address strat; // Strategy address that will auto compound want tokens
    }

PoolInfo[] public poolInfo; // Info of each pool.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo; // Info of each user that stakes LP tokens.
    mapping(address => bool) private strats;

event AddPool(address indexed strat);
    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

/**
     * @dev Add a new want to the pool. Can only be called by the owner.
     */
    function addPool(address _strat) external onlyOwner nonReentrant {
        require(!strats[_strat], "Existing strategy");
        poolInfo.push(
            PoolInfo({
                want: IERC20(IStrategy(_strat).wantAddress()),
                strat: _strat
            })
        );
        strats[_strat] = true;
        resetSingleAllowance(poolInfo.length.sub(1));
        emit AddPool(_strat);
    }

// View function to see staked Want tokens on frontend.
    function stakedWantTokens(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];

uint256 sharesTotal = IStrategy(pool.strat).sharesTotal();
        uint256 wantLockedTotal = IStrategy(poolInfo[_pid].strat).wantLockedTotal();
        if (sharesTotal == 0) {
            return 0;
        }
        return user.shares.mul(wantLockedTotal).div(sharesTotal);
    }

// Want tokens moved from user -> this -> Strat (compounding)
    function deposit(uint256 _pid, uint256 _wantAmt) external nonReentrant {
        _deposit(_pid, _wantAmt, msg.sender);
    }

// For depositing for other users
    function deposit(uint256 _pid, uint256 _wantAmt, address _to) external nonReentrant {
        _deposit(_pid, _wantAmt, _to);
    }

function _deposit(uint256 _pid, uint256 _wantAmt, address _to) internal {
        PoolInfo storage pool = poolInfo[_pid];
        require(pool.strat != address(0), "That strategy does not exist");
        UserInfo storage user = userInfo[_pid][_to];

if (_wantAmt > 0) {
            // Call must happen before transfer
            uint256 wantBefore = IERC20(pool.want).balanceOf(address(this));
            pool.want.safeTransferFrom(msg.sender, address(this), _wantAmt);
            uint256 finalDeposit = IERC20(pool.want).balanceOf(address(this)).sub(wantBefore);

// Proper deposit amount for tokens with fees
            uint256 sharesAdded = IStrategy(poolInfo[_pid].strat).deposit(_to, finalDeposit);
            user.shares = user.shares.add(sharesAdded);
        }
        emit Deposit(_to, _pid, _wantAmt);
    }

// Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _wantAmt) external nonReentrant {
        _withdraw(_pid, _wantAmt, msg.sender);
    }

// For withdrawing to other address
    function withdraw(uint256 _pid, uint256 _wantAmt, address _to) external nonReentrant {
        _withdraw(_pid, _wantAmt, _to);
    }

function _withdraw(uint256 _pid, uint256 _wantAmt, address _to) internal {
        PoolInfo storage pool = poolInfo[_pid];
        require(pool.strat != address(0), "That strategy does not exist");
        UserInfo storage user = userInfo[_pid][msg.sender];

uint256 wantLockedTotal = IStrategy(poolInfo[_pid].strat).wantLockedTotal();
        uint256 sharesTotal = IStrategy(poolInfo[_pid].strat).sharesTotal();

require(user.shares > 0, "user.shares is 0");
        require(sharesTotal > 0, "sharesTotal is 0");

// Withdraw want tokens
        uint256 amount = user.shares.mul(wantLockedTotal).div(sharesTotal);
        if (_wantAmt > amount) {
            _wantAmt = amount;
        }
        if (_wantAmt > 0) {
            uint256 sharesRemoved = IStrategy(poolInfo[_pid].strat).withdraw(msg.sender, _wantAmt);

if (sharesRemoved > user.shares) {
                user.shares = 0;
            } else {
                user.shares = user.shares.sub(sharesRemoved);
            }

uint256 wantBal = IERC20(pool.want).balanceOf(address(this));
            if (wantBal < _wantAmt) {
                _wantAmt = wantBal;
            }
            pool.want.safeTransfer(_to, _wantAmt);
        }
        emit Withdraw(msg.sender, _pid, _wantAmt);
    }

// Withdraw everything from pool for yourself
    function withdrawAll(uint256 _pid) external {
        _withdraw(_pid, type(uint256).max, msg.sender);
    }

function resetAllowances() external onlyOwner {
        for (uint256 i=0; i<poolInfo.length; i++) {
            PoolInfo storage pool = poolInfo[i];
            pool.want.safeApprove(pool.strat, uint256(0));
            pool.want.safeIncreaseAllowance(pool.strat, type(uint256).max);
        }
    }

function earnAll() external {
        for (uint256 i=0; i<poolInfo.length; i++) {
            if (!IStrategy(poolInfo[i].strat).paused())
                IStrategy(poolInfo[i].strat).earn(_msgSender());
        }
    }

function earnSome(uint256[] memory pids) external {
        for (uint256 i=0; i<pids.length; i++) {
            if (poolInfo.length >= pids[i] && !IStrategy(poolInfo[pids[i]].strat).paused())
                IStrategy(poolInfo[pids[i]].strat).earn(_msgSender());
        }
    }

function resetSingleAllowance(uint256 _pid) public onlyOwner {
        PoolInfo storage pool = poolInfo[_pid];
        pool.want.safeApprove(pool.strat, uint256(0));
        pool.want.safeIncreaseAllowance(pool.strat, type(uint256).max);
    }
}

Texte modifié

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;

import "./libs/IStrategy.sol";

contract VaultHealer is ReentrancyGuard, Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;