Contract
Contract Overview
Balance:
0 AVAX
AVAX Value:
$0.00
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| Txn Hash | Method |
Block
|
From
|
To
|
Value | [Txn Fee] | |||
|---|---|---|---|---|---|---|---|---|---|
| 0x15038dc3745c46ee66fb856921e6914a1a5f61528af88cf30254199d251b4821 | 0x6113ab61 | 16417257 | 12 days 12 hrs ago | 0xdd5cf30f56c37d3243a23543dc5bd5ee576970e2 | IN | Create: ERC20FactoryLib | 0 AVAX | 0.0323221752 |
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Contract Name:
ERC20FactoryLib
Compiler Version
v0.8.7+commit.e28d00a7
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "IERC20.sol";
import "Initializable.sol";
import "OwnableUpgradeable.sol";
import "IJoeStaking.sol";
import "IBaseRewardPool.sol";
import "IPoolHelper.sol";
import "IMintableERC20.sol";
import "IMasterChefVTX.sol";
import "IxJoe.sol";
import "IMasterJoe.sol";
import "IWavax.sol";
import "PoolHelperJoeFactoryLib.sol";
import "ERC20FactoryLib.sol";
/// @title MainStaking
/// @author Vector Team
/// @notice Mainstaking is the contract that interacts with ALL Joe contract
/// @dev all functions except harvest are restricted either to owner or to other contracts from the vector protocol
/// @dev the owner of this contract holds a lot of power, and should be owned by a multisig
contract MainStakingJoe is Initializable, OwnableUpgradeable {
using SafeERC20 for IERC20;
// Addresses
address public stakingJoe;
address public joe;
address public xJoe;
address public veJoe;
address public masterJoe;
address public masterVtx;
address public router;
// Fees
uint256 constant FEE_DENOMINATOR = 10000;
uint256 public constant MAX_FEE = 3000;
uint256 public CALLER_FEE;
uint256 public constant MAX_CALLER_FEE = 500;
uint256 public totalFee;
struct Fees {
uint256 maxValue;
uint256 minValue;
uint256 value;
address to;
bool isJoe;
bool isAddress;
bool isActive;
}
Fees[] public feeInfos;
struct Pool {
uint256 pid;
bool isActive;
address token;
address receiptToken;
address rewarder;
address helper;
}
mapping(address => Pool) public pools;
mapping(address => address) public tokenToAvaxPool;
bool public boostBufferActivated;
bool public bypassBoostWait;
mapping(address => address[]) public assetToBonusRewards;
address public constant WAVAX = 0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7;
event AddFee(address to, uint256 value, bool isJoe, bool isAddress);
event SetFee(address to, uint256 value);
event RemoveFee(address to);
event veJoeClaimed(uint256 amount);
event JoeHarvested(uint256 amount, uint256 callerFee);
event RewardPaidTo(address to, address rewardToken, uint256 feeAmount);
event NewJoeStaked(uint256 amount);
event PoolAdded(address tokenAddress);
event PoolRemoved(address _token);
event PoolHelperSet(address _token);
event PoolRewarderSet(address token, address _poolRewarder);
event MasterChiefSet(address _token);
event MasterJoeSet(address _token);
function __MainStakingJoe_init(
address _joe,
address _boostedMasterChefJoe,
address _masterVtx,
address _veJoe,
address _router,
address _stakingJoe,
uint256 _callerFee
) public initializer {
__Ownable_init();
// Address of the joe Token
joe = _joe;
// Address of the MasterChefJoe for depositing lp tokens
masterJoe = _boostedMasterChefJoe;
masterVtx = _masterVtx;
CALLER_FEE = _callerFee;
totalFee = _callerFee;
veJoe = _veJoe;
router = _router;
stakingJoe = _stakingJoe;
}
/// @notice set the vJoe address
/// @dev can only be called once
/// @param _xJoe the vJoe address
function setXJoe(address _xJoe) external onlyOwner {
require(xJoe == address(0), "xJoe already set");
xJoe = _xJoe;
}
function boosterThreshold() public view returns (uint256) {
return IJoeStaking(stakingJoe).speedUpThreshold();
}
/// @notice This function adds a fee to the vector protocol
/// @dev the value of the fee must match the max fee requirement
/// @param max the maximum value for that fee
/// @param min the minimum value for that fee
/// @param value the initial value for that fee
/// @param to the address or contract that receives the fee
/// @param isJoe true if the fee is sent as Joe, otherwise it will be xJoe
/// @param isAddress true if the receiver is an address, otherwise it's a BaseRewarder
function addFee(
uint256 max,
uint256 min,
uint256 value,
address to,
bool isJoe,
bool isAddress
) external onlyOwner {
require(to != address(0), "No fees to address 0");
require(totalFee + value <= MAX_FEE, "Max fee reached");
require(min <= value && value <= max, "Value not in range");
feeInfos.push(
Fees({
maxValue: max,
minValue: min,
value: value,
to: to,
isJoe: isJoe,
isAddress: isAddress,
isActive: true
})
);
totalFee += value;
emit AddFee(to, value, isJoe, isAddress);
}
function setBufferStatus(bool status) public onlyOwner {
boostBufferActivated = status;
}
function setBypassBoostWait(bool status) public onlyOwner {
bypassBoostWait = status;
}
/// @notice change the value of some fee
/// @dev the value must be between the min and the max specified when registering the fee
/// @dev the value must match the max fee requirements
/// @param index the index of the fee in the fee list
/// @param value the new value of the fee
function setFee(uint256 index, uint256 value) external onlyOwner {
Fees storage fee = feeInfos[index];
require(fee.isActive, "Cannot change an deactivated fee");
require(fee.minValue <= value && value <= fee.maxValue, "Value not in range");
require(totalFee + value - fee.value <= MAX_FEE, "Max fee reached");
totalFee = totalFee - fee.value + value;
fee.value = value;
emit SetFee(fee.to, value);
}
/// @notice remove some fee
/// @param index the index of the fee in the fee list
function removeFee(uint256 index) external onlyOwner {
Fees storage fee = feeInfos[index];
totalFee -= fee.value;
fee.isActive = false;
emit RemoveFee(fee.to);
}
/// @notice set the caller fee
/// @param value the value of the caller fee
function setCallerFee(uint256 value) external onlyOwner {
require(value <= MAX_CALLER_FEE, "Value too high");
// Check if the fee delta does not make the total fee go over the limit
totalFee = totalFee + value - CALLER_FEE;
require(totalFee <= MAX_FEE, "MAX Fee reached");
CALLER_FEE = value;
}
/// @notice deposit lp in a Joe pool
/// @dev this function can only be called by a PoolHelper
/// @param token the token to deposit
/// @param amount the amount to deposit
function deposit(address token, uint256 amount) external {
// Get information of the pool of the token
Pool storage poolInfo = pools[token];
//Requirements
require(poolInfo.isActive, "Pool not active");
require(msg.sender == poolInfo.helper, "Only helper can deposit");
IERC20(token).safeTransferFrom(poolInfo.helper, address(this), amount);
// Deposit to masterJoe Contract
_approveTokenIfNeeded(token, masterJoe, amount);
IMasterJoe(masterJoe).deposit(poolInfo.pid, amount);
IMintableERC20(poolInfo.receiptToken).mint(poolInfo.helper, amount);
}
/// @notice harvest a pool from MasterJoe
/// @param token the address of the token to harvest
/// @param isUser true if this function is not called by the vector Contracts. The caller gets the caller fee
function harvest(address token, bool isUser) public {
Pool storage poolInfo = pools[token];
require(poolInfo.isActive, "Pool not active");
address[] memory bonusTokens = assetToBonusRewards[token];
uint256 bonusTokensLength = bonusTokens.length;
uint256[] memory beforeBalances = new uint256[](bonusTokensLength);
for (uint256 i; i < bonusTokensLength; i++) {
beforeBalances[i] = IERC20(bonusTokens[i]).balanceOf(address(this));
}
uint256 beforeBalance = IERC20(joe).balanceOf(address(this));
IMasterJoe(masterJoe).deposit(poolInfo.pid, 0);
uint256 rewards = IERC20(joe).balanceOf(address(this)) - beforeBalance;
uint256 afterFee = rewards;
if (isUser && CALLER_FEE != 0) {
uint256 feeAmount = (rewards * CALLER_FEE) / FEE_DENOMINATOR;
_approveTokenIfNeeded(joe, xJoe, feeAmount);
IxJoe(xJoe).depositFor(feeAmount, msg.sender);
afterFee = afterFee - feeAmount;
}
sendRewards(poolInfo.token, poolInfo.rewarder, rewards, afterFee);
for (uint256 i; i < bonusTokensLength; i++) {
uint256 bonusBalanceDiff = IERC20(bonusTokens[i]).balanceOf(address(this)) -
beforeBalances[i];
if (bonusBalanceDiff > 0) {
sendOtherRewards(bonusTokens[i], poolInfo.rewarder, bonusBalanceDiff);
}
}
emit JoeHarvested(rewards, rewards - afterFee);
}
/// @notice Send bonus rewards to the rewarders, don't apply platform fees
/// @param token the address of the token to send rewards to
/// @param rewarder the rewarder that will get tthe rewards
/// @param _amount the initial amount of rewards after harvest
function sendOtherRewards(
address token,
address rewarder,
uint256 _amount
) internal {
IERC20(token).approve(rewarder, _amount);
IBaseRewardPool(rewarder).queueNewRewards(_amount, token);
emit RewardPaidTo(rewarder, token, _amount);
}
/// @notice increase allowance to a contract to the maximum amount for a specific token if it is needed
/// @param token the token to increase the allowance of
/// @param _to the contract to increase the allowance
/// @param _amount the amount of allowance that the contract needs
function _approveTokenIfNeeded(
address token,
address _to,
uint256 _amount
) private {
if (IERC20(token).allowance(address(this), _to) < _amount) {
IERC20(token).approve(_to, type(uint256).max);
}
}
/// @notice Send rewards to the rewarders
/// @param token the address of the token to send rewards to
/// @param rewarder the rewarder that will get the rewards
/// @param _amount the initial amount of rewards after harvest
/// @param afterFee the amount to send to the rewarder after fees are collected
function sendRewards(
address token,
address rewarder,
uint256 _amount,
uint256 afterFee
) internal {
for (uint256 i = 0; i < feeInfos.length; i++) {
Fees storage feeInfo = feeInfos[i];
if (feeInfo.isActive) {
address rewardToken = joe;
uint256 feeAmount = (_amount * feeInfo.value) / FEE_DENOMINATOR;
if (!feeInfo.isJoe) {
// _approveTokenIfNeeded(joe, xJoe, feeAmount);
IxJoe(xJoe).depositWithoutTransferFor(feeAmount, address(this));
rewardToken = xJoe;
}
if (!feeInfo.isAddress) {
_approveTokenIfNeeded(rewardToken, feeInfo.to, feeAmount);
IBaseRewardPool(feeInfo.to).donateRewards(feeAmount, rewardToken);
} else {
IERC20(rewardToken).transfer(feeInfo.to, feeAmount);
emit RewardPaidTo(feeInfo.to, rewardToken, feeAmount);
}
afterFee -= feeAmount;
}
}
_approveTokenIfNeeded(joe, rewarder, afterFee);
IBaseRewardPool(rewarder).queueNewRewards(afterFee, joe);
}
/// @notice Send Unusual rewards to the rewarders, as airdrops
/// @dev fees are not collected
/// @param _token the address of the token to send
/// @param _rewarder the rewarder that will get the rewards
function sendTokenRewards(address _token, address _rewarder) external onlyOwner {
// require(_token != joe, "not authorized");
// require(!pools[_token].isActive, "Not authorized");
uint256 amount = IERC20(_token).balanceOf(address(this));
_approveTokenIfNeeded(_token, _rewarder, amount);
IBaseRewardPool(_rewarder).queueNewRewards(amount, _token);
}
/// @notice Send Unusual rewards to the rewarders, as airdrops
/// @dev fees are not collected
/// @param _token the address of the token to send
/// @param _rewarder the rewarder that will get the rewards
function donateTokenRewards(address _token, address _rewarder) external onlyOwner {
// require(_token != joe, "not authorized");
// require(!pools[_token].isActive, "Not authorized");
uint256 amount = IERC20(_token).balanceOf(address(this));
_approveTokenIfNeeded(_token, _rewarder, amount);
IBaseRewardPool(_rewarder).donateRewards(amount, _token);
}
/// @notice withdraw from a Joe pool
/// @dev Only a PoolHelper can call this function
/// @param token the address of the pool token from which to withdraw
/// @param _amount the initial amount of tokens to withdraw
function withdraw(address token, uint256 _amount) external {
// _amount is the amount of stable
Pool storage poolInfo = pools[token];
require(msg.sender == poolInfo.helper, "Only helper can withdraw");
IMintableERC20(poolInfo.receiptToken).burn(msg.sender, _amount);
IMasterJoe(masterJoe).withdraw(poolInfo.pid, _amount);
IERC20(token).safeTransfer(poolInfo.helper, _amount);
}
function stakeJoeOwner(uint256 _amount) external onlyOwner {
_stakeJoe(_amount);
}
function boostEndDate() public view returns (uint256 date) {
(, , , date) = IJoeStaking(stakingJoe).userInfos(address(this));
}
function joeBalance() public view returns (uint256) {
return IERC20(joe).balanceOf(address(this));
}
function remainingForBoost() public view returns (uint256) {
uint256 stakedJoe = getStakedJoe();
uint256 balance = joeBalance();
uint256 threshold = (stakedJoe * boosterThreshold()) / 100;
if (balance >= threshold + 1 ether) {
return 0;
}
return threshold + 1 ether - balance;
}
function stakeJoe(uint256 _amount) public {
uint256 amount = _amount;
if (boostBufferActivated == false) {
_stakeJoe(amount);
return;
}
uint256 neededForBoost = remainingForBoost();
if (neededForBoost == 0) {
uint256 balance = joeBalance();
if ((block.timestamp > boostEndDate()) || bypassBoostWait) {
_stakeJoe(balance);
} else {
uint256 stakedJoe = getStakedJoe();
uint256 threshold = (stakedJoe * boosterThreshold()) / 100;
_stakeJoe(((balance - threshold) * (100 - boosterThreshold())) / 100);
}
} else {
claimVeJoe();
}
}
/// @notice stake Joe
/// @param amount the number of Joe to stake
/// @dev the Joe must already be in the contract
function _stakeJoe(uint256 amount) internal {
if (amount > 0) {
uint256 veJoeAmount = getPendingVeJoe();
_approveTokenIfNeeded(joe, stakingJoe, amount);
IJoeStaking(stakingJoe).deposit(amount);
emit veJoeClaimed(veJoeAmount);
}
emit NewJoeStaked(amount);
}
/// @notice Claim the pending veJoe
function claimVeJoe() public {
uint256 amount = getPendingVeJoe();
if (amount > 0) {
IJoeStaking(stakingJoe).claim();
}
emit veJoeClaimed(amount);
}
/// @notice gets the pending veJoe
function getPendingVeJoe() public view returns (uint256 pending) {
pending = IJoeStaking(stakingJoe).getPendingVeJoe(address(this));
}
/// @notice gets the number of staked Joe by this contract
function getStakedJoe() public view returns (uint256 stakedJoe) {
(stakedJoe, , , ) = IJoeStaking(stakingJoe).userInfos(address(this));
}
/// @notice get the number of veJoe of this contract
function getVeJoe() external view returns (uint256) {
return IERC20(veJoe).balanceOf(address(this));
}
/// @notice Register a new pool of Joe
/// @dev this function will deploy a new PoolHelper, and add the pool to the masterVTX
/// @param _pid the pid of the pool
/// @param _token the token to stake in the pool
/// @param receiptName the name of the receipt Token
/// @param receiptSymbol the symbol of the receipt Token
/// @param allocPoints the weight of the VTX allocation
function registerPool(
uint256 _pid,
address _token,
string memory receiptName,
string memory receiptSymbol,
uint256 allocPoints
) external onlyOwner {
require(pools[_token].isActive == false, "Pool is already registered and active");
IERC20 newToken = IERC20(ERC20FactoryLib.createERC20(receiptName, receiptSymbol));
address rewarder = IMasterChefVTX(masterVtx).createRewarder(
address(newToken),
address(joe)
);
IPoolHelper helper = IPoolHelper(
PoolHelperJoeFactoryLib.createPoolHelper(
_pid,
address(newToken),
address(_token),
address(this),
address(masterVtx),
address(rewarder),
address(xJoe),
router
)
);
IMasterChefVTX(masterVtx).add(
allocPoints,
address(newToken),
address(rewarder),
address(helper)
);
pools[_token] = Pool({
pid: _pid,
isActive: true,
token: _token,
receiptToken: address(newToken),
rewarder: address(rewarder),
helper: address(helper)
});
emit PoolAdded(_token);
}
/// @notice Get the information of a pool
/// @param _address the address of the deposit token to fetch information for
/// @return pid the pid of the pool
/// @return isActive true if the pool is active
/// @return token the deposit Token
/// @return receipt - the address of the receipt token of this pool
/// @return rewardsAddr the address of the rewarder
/// @return helper the address of the poolHelper
function getPoolInfo(address _address)
external
view
returns (
uint256 pid,
bool isActive,
address token,
address receipt,
address rewardsAddr,
address helper
)
{
Pool storage tokenInfo = pools[_address];
pid = tokenInfo.pid;
isActive = tokenInfo.isActive;
token = tokenInfo.token;
receipt = tokenInfo.receiptToken;
rewardsAddr = tokenInfo.rewarder;
helper = tokenInfo.helper;
}
function removePool(address token) external onlyOwner {
pools[token].isActive = false;
emit PoolRemoved(token);
}
function setPoolHelper(address token, address _poolhelper) external onlyOwner {
Pool storage poolInfo = pools[token];
poolInfo.helper = _poolhelper;
emit PoolHelperSet(token);
}
function setPoolRewarder(address token, address _poolRewarder) external onlyOwner {
Pool storage poolInfo = pools[token];
poolInfo.rewarder = _poolRewarder;
emit PoolRewarderSet(token, _poolRewarder);
}
function setMasterChief(address _masterVtx) external onlyOwner {
masterVtx = _masterVtx;
emit MasterChiefSet(_masterVtx);
}
function setMasterJoe(address _masterJoe) external onlyOwner {
masterJoe = _masterJoe;
emit MasterJoeSet(_masterJoe);
}
function addBonusRewardForAsset(address _asset, address _bonusToken) external onlyOwner {
assetToBonusRewards[_asset].push(_bonusToken);
}
receive() external payable {
IWAVAX(WAVAX).deposit{value: address(this).balance}();
}
uint256[40] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/utils/Initializable.sol)
pragma solidity ^0.8.0;
import "AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the
* initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() initializer {}
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
// If the contract is initializing we ignore whether _initialized is set in order to support multiple
// inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
// contract may have been reentered.
require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} modifier, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
function _isConstructor() private view returns (bool) {
return !AddressUpgradeable.isContract(address(this));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "ContextUpgradeable.sol";
import "Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
uint256[49] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
import "Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
__Context_init_unchained();
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IJoeStaking {
function deposit(uint256 _amount) external;
function withdraw(uint256 _amount) external;
function claim() external;
function getPendingVeJoe(address _user) external view returns (uint256);
function userInfos(address _user)
external
view
returns (
uint256,
uint256,
uint256,
uint256
);
function speedUpThreshold() external view returns(uint256);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IBaseRewardPool {
struct Reward {
address rewardToken;
uint256 rewardPerTokenStored;
uint256 queuedRewards;
uint256 historicalRewards;
}
function rewards(address token)
external
view
returns (Reward memory rewardInfo);
function rewardTokens() external view returns (address[] memory);
function getStakingToken() external view returns (address);
function getReward(address _account) external returns (bool);
function rewardDecimals(address token) external view returns (uint256);
function stakingDecimals() external view returns (uint256);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function rewardPerToken(address token) external view returns (uint256);
function updateFor(address account) external;
function earned(address account, address token)
external
view
returns (uint256);
function stakeFor(address _for, uint256 _amount) external returns (bool);
function withdrawFor(
address user,
uint256 amount,
bool claim
) external;
function queueNewRewards(uint256 _rewards, address token)
external
returns (bool);
function donateRewards(uint256 _amountReward, address _rewardToken)
external
returns (bool);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IPoolHelper {
function totalSupply() external view returns (uint256);
function balance(address _address) external view returns (uint256);
function depositTokenBalance() external view returns (uint256);
function rewardPerToken() external view returns (uint256);
function harvest() external;
function update() external;
function earned()
external
view
returns (uint256 vtxAmount, uint256 ptpAmount);
function deposit(uint256 amount) external;
function stake(uint256 amount) external;
function withdraw(uint256 amount, uint256 minimumAmount) external;
function getReward() external;
function pendingPTP() external view returns (uint256 pendingTokens);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IMintableERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
function mint(address, uint256) external;
function faucet(uint256) external;
function burn(address, uint256) external;
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IMasterChefVTX {
function poolLength() external view returns (uint256);
function setPoolManagerStatus(address _address, bool _bool) external;
function add(
uint256 _allocPoint,
address _lpToken,
address _rewarder,
address _helper
) external;
function set(
address _lp,
uint256 _allocPoint,
address _rewarder,
address _locker,
bool overwrite
) external;
function createRewarder(address _lpToken, address mainRewardToken)
external
returns (address);
// View function to see pending VTXs on frontend.
function getPoolInfo(address token)
external
view
returns (
uint256 emission,
uint256 allocpoint,
uint256 sizeOfPool,
uint256 totalPoint
);
function pendingTokens(
address _lp,
address _user,
address token
)
external
view
returns (
uint256 pendingVTX,
address bonusTokenAddress,
string memory bonusTokenSymbol,
uint256 pendingBonusToken
);
function rewarderBonusTokenInfo(address _lp)
external
view
returns (address bonusTokenAddress, string memory bonusTokenSymbol);
function massUpdatePools() external;
function updatePool(address _lp) external;
function deposit(address _lp, uint256 _amount) external;
function depositFor(
address _lp,
uint256 _amount,
address sender
) external;
function lock(
address _lp,
uint256 _amount,
uint256 _index,
bool force
) external;
function unlock(
address _lp,
uint256 _amount,
uint256 _index
) external;
function multiUnlock(
address _lp,
uint256[] calldata _amount,
uint256[] calldata _index
) external;
function withdraw(address _lp, uint256 _amount) external;
function withdrawFor(
address _lp,
uint256 _amount,
address _sender
) external;
function multiclaim(address[] memory _lps, address user_address) external;
function emergencyWithdraw(address _lp, address sender) external;
function updateEmissionRate(uint256 _vtxPerSec) external;
function depositInfo(address _lp, address _user)
external
view
returns (uint256 depositAmount);
function setPoolHelper(
address _lp,
address _helper
) external;
function authorizeLocker(address _locker) external;
function lockFor(
address _lp,
uint256 _amount,
uint256 _index,
address _for,
bool force
) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IxJoe {
function mainContract() external view returns (address);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount)
external
returns (bool);
function symbol() external view returns (string memory);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function depositFor(uint256 amount, address to) external;
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
function depositWithoutTransferFor(uint256 _amount, address _for) external;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IMasterJoe {
function deposit(uint256 _pid, uint256 amount) external;
function withdraw(uint256 _pid, uint256 amount) external;
}// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.5.0;
interface IWAVAX {
function deposit() external payable;
function transfer(address to, uint256 value) external returns (bool);
function withdraw(uint256) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "poolHelperJoe.sol";
library PoolHelperJoeFactoryLib {
function createPoolHelper(
uint256 _pid,
address _stakingToken,
address _depositToken,
address _mainStaking,
address _masterVtx,
address _rewarder,
address _xjoe,
address _router
) public returns (address) {
PoolHelperJoe pool = new PoolHelperJoe(
_pid,
_stakingToken,
_depositToken,
_mainStaking,
_masterVtx,
_rewarder,
_xjoe,
_router
);
return address(pool);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "SafeERC20.sol";
import "IBaseRewardPool.sol";
import "IMainStakingJoe.sol";
import "IMasterChefVTX.sol";
import "IJoeRouter02.sol";
import "IJoePair.sol";
import "IWavax.sol";
/// @title Poolhelper
/// @author Vector Team
/// @notice This contract is the main contract that user will intreact with in order to stake stable in Vector protocol
contract PoolHelperJoe {
using SafeERC20 for IERC20;
address public depositToken;
address public constant wavax = 0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7;
address public immutable stakingToken;
address public immutable xJoe;
address public immutable masterVtx;
address public immutable joeRouter;
address public immutable mainStakingJoe;
address public immutable rewarder;
uint256 public immutable pid;
bool public immutable isWavaxPool;
address public tokenA;
address public tokenB;
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status = 1;
event NewDeposit(address indexed user, uint256 amount);
event NewWithdraw(address indexed user, uint256 amount);
constructor(
uint256 _pid,
address _stakingToken,
address _depositToken,
address _mainStakingJoe,
address _masterVtx,
address _rewarder,
address _xJoe,
address _joeRouter
) {
pid = _pid;
stakingToken = _stakingToken;
depositToken = _depositToken;
mainStakingJoe = _mainStakingJoe;
masterVtx = _masterVtx;
rewarder = _rewarder;
xJoe = _xJoe;
tokenA = IJoePair(depositToken).token0();
tokenB = IJoePair(depositToken).token1();
isWavaxPool = (tokenA == wavax || tokenB == wavax);
joeRouter = _joeRouter;
}
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
function totalSupply() public view returns (uint256) {
return IBaseRewardPool(rewarder).totalSupply();
}
/// @notice get the amount of reward per token deposited by a user
/// @param token the token to get the number of rewards
/// @return the amount of claimable tokens
function rewardPerToken(address token) public view returns (uint256) {
return IBaseRewardPool(rewarder).rewardPerToken(token);
}
/// @notice get the total amount of shares of a user
/// @param _address the user
/// @return the amount of shares
function balanceOf(address _address) public view returns (uint256) {
return IBaseRewardPool(rewarder).balanceOf(_address);
}
modifier _harvest() {
IMainStakingJoe(mainStakingJoe).harvest(depositToken, false);
_;
}
/// @notice harvest pending Joe and get the caller fee
function harvest() public {
IMainStakingJoe(mainStakingJoe).harvest(depositToken, true);
IERC20(xJoe).safeTransfer(msg.sender, IERC20(xJoe).balanceOf(address(this)));
}
/// @notice get the total amount of rewards for a given token for a user
/// @param token the address of the token to get the number of rewards for
/// @return vtxAmount the amount of VTX ready for harvest
/// @return tokenAmount the amount of token inputted
function earned(address token) public view returns (uint256 vtxAmount, uint256 tokenAmount) {
(vtxAmount, , , tokenAmount) = IMasterChefVTX(masterVtx).pendingTokens(
stakingToken,
msg.sender,
token
);
}
/// @notice stake the receipt token in the masterchief of VTX on behalf of the caller
function _stake(uint256 _amount) internal {
_approveTokenIfNeeded(stakingToken, masterVtx, _amount);
IMasterChefVTX(masterVtx).depositFor(stakingToken, _amount, msg.sender);
}
/// @notice unstake from the masterchief of VTX on behalf of the caller
function _unstake(uint256 _amount) internal {
IMasterChefVTX(masterVtx).withdrawFor(stakingToken, _amount, msg.sender);
}
function _deposit(uint256 _amount) internal {
_approveTokenIfNeeded(depositToken, mainStakingJoe, _amount);
IMainStakingJoe(mainStakingJoe).deposit(depositToken, _amount);
}
/// @notice deposit lp in mainStakingJoe, autostake in masterchief of VTX
/// @dev performs a harvest of Joe just before depositing
/// @param amount the amount of lp tokens to deposit
function deposit(uint256 amount) external _harvest {
IERC20(depositToken).safeTransferFrom(msg.sender, address(this), amount);
_deposit(amount);
_stake(amount);
emit NewDeposit(msg.sender, amount);
}
/// @notice increase allowance to a contract to the maximum amount for a specific token if it is needed
/// @param token the token to increase the allowance of
/// @param _to the contract to increase the allowance
/// @param _amount the amount of allowance that the contract needs
function _approveTokenIfNeeded(
address token,
address _to,
uint256 _amount
) private {
if (IERC20(token).allowance(address(this), _to) < _amount) {
IERC20(token).approve(_to, type(uint256).max);
}
}
/// @notice convert tokens to lp tokens
/// @param amountA amount of the first token we want to convert
/// @param amountB amount of the second token we want to convert
/// @param amountAMin minimum amount of the first token we want to convert
/// @param amountBMin minimum amount of the second token we want to convert
/// @return amountAConverted amount of the first token converted during the operation of adding liquidity to the pool
/// @return amountBConverted amount of the second token converted during the operation of adding liquidity to the pool
/// @return liquidity amount of lp tokens minted during the operation of adding liquidity to the pool
function _createLPTokens(
uint256 amountA,
uint256 amountB,
uint256 amountAMin,
uint256 amountBMin
)
internal
returns (
uint256 amountAConverted,
uint256 amountBConverted,
uint256 liquidity
)
{
_approveTokenIfNeeded(tokenA, joeRouter, amountA);
_approveTokenIfNeeded(tokenB, joeRouter, amountB);
(amountAConverted, amountBConverted, liquidity) = IJoeRouter01(joeRouter).addLiquidity(
tokenA,
tokenB,
amountA,
amountB,
amountAMin,
amountBMin,
address(this),
block.timestamp
);
}
/// @notice Add liquidity and then deposits lp in mainStakingJoe, autostake in masterchief of VTX
/// @dev performs a harvest of Joe just before depositing
/// @param amountA the desired amount of token A to deposit
/// @param amountB the desired amount of token B to deposit
/// @param amountAMin the minimum amount of token B to get back
/// @param amountBMin the minimum amount of token B to get back
/// @param isAvax is the token actually native ether ?
/// @return amountAConverted the amount of token A actually converted
/// @return amountBConverted the amount of token B actually converted
/// @return liquidity the amount of LP obtained
function addLiquidityAndDeposit(
uint256 amountA,
uint256 amountB,
uint256 amountAMin,
uint256 amountBMin,
bool isAvax
)
external
payable
nonReentrant
_harvest
returns (
uint256 amountAConverted,
uint256 amountBConverted,
uint256 liquidity
)
{
if (isAvax && isWavaxPool) {
uint256 amountWavax = (tokenA == wavax) ? amountA : amountB;
require(amountWavax <= msg.value, "Not enough AVAX");
IWAVAX(wavax).deposit{value: msg.value}();
(address token, uint256 amount) = (tokenA == wavax)
? (tokenB, amountB)
: (tokenA, amountA);
IERC20(token).safeTransferFrom(msg.sender, address(this), amount);
} else {
IERC20(tokenA).safeTransferFrom(msg.sender, address(this), amountA);
IERC20(tokenB).safeTransferFrom(msg.sender, address(this), amountB);
}
(amountAConverted, amountBConverted, liquidity) = _createLPTokens(
amountA,
amountB,
amountAMin,
amountBMin
);
_deposit(liquidity);
_stake(liquidity);
IERC20(tokenB).safeTransfer(msg.sender, amountB - amountBConverted);
IERC20(tokenA).safeTransfer(msg.sender, amountA - amountAConverted);
emit NewDeposit(msg.sender, liquidity);
}
/// @notice stake the receipt token in the masterchief of VTX on behalf of the caller
function stake(uint256 _amount) external {
IERC20(stakingToken).safeTransferFrom(msg.sender, address(this), _amount);
_approveTokenIfNeeded(stakingToken, masterVtx, _amount);
IMasterChefVTX(masterVtx).depositFor(stakingToken, _amount, msg.sender);
}
function _withdraw(uint256 amount) internal {
_unstake(amount);
IMainStakingJoe(mainStakingJoe).withdraw(depositToken, amount);
}
/// @notice withdraw stables from mainStakingJoe, auto unstake from masterchief of VTX
/// @dev performs a harvest of Joe before withdrawing
/// @param amount the amount of LP tokens to withdraw
function withdraw(uint256 amount) external _harvest nonReentrant {
_withdraw(amount);
IERC20(depositToken).safeTransfer(msg.sender, amount);
emit NewWithdraw(msg.sender, amount);
}
/// @notice withdraw stables from mainStakingJoe, auto unstake from masterchief of VTX
/// @dev performs a harvest of Joe before withdrawing
/// @param amount the amount of stables to deposit
/// @param amountAMin the minimum amount of token A to get back
/// @param amountBMin the minimum amount of token B to get back
/// @param isAvax is the token actually native ether ?
function withdrawAndRemoveLiquidity(
uint256 amount,
uint256 amountAMin,
uint256 amountBMin,
bool isAvax
) external _harvest nonReentrant {
_withdraw(amount);
_approveTokenIfNeeded(depositToken, joeRouter, amount);
_approveTokenIfNeeded(depositToken, depositToken, amount);
if (isAvax && isWavaxPool) {
(address token, uint256 amountTokenMin, uint256 amountAVAXMin) = tokenA == wavax
? (tokenB, amountBMin, amountAMin)
: (tokenA, amountAMin, amountBMin);
IJoeRouter02(joeRouter).removeLiquidityAVAX(
token,
amount,
amountTokenMin,
amountAVAXMin,
msg.sender,
block.timestamp
);
} else {
IJoeRouter02(joeRouter).removeLiquidity(
tokenA,
tokenB,
amount,
amountAMin,
amountBMin,
msg.sender,
block.timestamp
);
}
emit NewWithdraw(msg.sender, amount);
}
/// @notice Harvest VTX and Joe rewards
function getReward() external _harvest {
IMasterChefVTX(masterVtx).depositFor(stakingToken, 0, msg.sender);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
import "Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IMainStakingJoe {
function setXJoe(address _xJoe) external;
function addFee(
uint256 max,
uint256 min,
uint256 value,
address to,
bool isJoe,
bool isAddress
) external;
function setFee(uint256 index, uint256 value) external;
function removeFee(uint256 index) external;
function setCallerFee(uint256 value) external;
function deposit(address token, uint256 amount) external;
function harvest(address token, bool isUser) external;
function sendTokenRewards(address _token, address _rewarder) external;
function donateTokenRewards(address _token, address _rewarder) external;
function withdraw(address token, uint256 _amount) external;
function stakeJoe(uint256 amount) external;
function stakeOrBufferJoe(uint256 amount) external;
function stakeAllJoe() external;
function claimVeJoe() external;
function getStakedJoe() external view returns (uint256 stakedJoe);
function getVeJoe() external view returns (uint256);
function registerPool(
uint256 _pid,
address _token,
string memory receiptName,
string memory receiptSymbol,
uint256 allocPoints
) external;
function getPoolInfo(address _address)
external
view
returns (
uint256 pid,
bool isActive,
address token,
address receipt,
address rewards_addr,
address helper
);
function removePool(address token) external;
function setPoolHelper(address token, address _poolhelper) external;
function setPoolRewarder(address token, address _poolRewarder) external;
function setMasterChief(address _masterVtx) external;
function setMasterJoe(address _masterJoe) external;
}// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.6.2;
import "IJoeRouter01.sol";
interface IJoeRouter02 is IJoeRouter01 {
function removeLiquidityAVAXSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountAVAXMin,
address to,
uint256 deadline
) external returns (uint256 amountAVAX);
function removeLiquidityAVAXWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountAVAXMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountAVAX);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactAVAXForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForAVAXSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;
interface IJoeRouter01 {
function factory() external pure returns (address);
function WAVAX() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityAVAX(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountAVAXMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountAVAX,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityAVAX(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountAVAXMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountAVAX);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityAVAXWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountAVAXMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountAVAX);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactAVAXForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactAVAX(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForAVAX(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapAVAXForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IJoePair {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves()
external
view
returns (
uint112 reserve0,
uint112 reserve1,
uint32 blockTimestampLast
);
function price0CumulativeLast() external view returns (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "MintableERC20.sol";
library ERC20FactoryLib {
function createERC20(string memory name_, string memory symbol_) public returns (address) {
ERC20 token = new MintableERC20(name_, symbol_);
return address(token);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "ERC20.sol";
import "Ownable.sol";
contract MintableERC20 is ERC20, Ownable {
/*
The ERC20 deployed will be owned by the others contracts of the protocol, specifically by
Masterchief and MainStaking, forbidding the misuse of these functions for nefarious purposes
*/
constructor(string memory name_, string memory symbol_) ERC20(name_, symbol_) {}
function mint(address account, uint256 amount) external virtual onlyOwner {
_mint(account, amount);
}
function burn(address account, uint256 amount) external virtual onlyOwner {
_burn(account, amount);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
import "IERC20Metadata.sol";
import "Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}{
"evmVersion": "istanbul",
"optimizer": {
"enabled": true,
"runs": 420
},
"libraries": {
"MainStakingJoe.sol": {
"PoolHelperJoeFactoryLib": "0x69CdE7a07e3FFb839Ca69F635174c725F006E98B",
"ERC20FactoryLib": "0x2ddC95E41d01DDD3268cd91A35A7bd7d0849d7Fc"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"abi"
]
}
}
}Contract Creation Code
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Deployed ByteCode Sourcemap
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Swarm Source
ipfs://91bad72c04e3d21ea530c61e3e56692c49a8e6f27ee70a8ae48d7206edd6da4b
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