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Contract Name:
BaseRewardPool4626
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
Yes with 800 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import { BaseRewardPool, IDeposit } from "./BaseRewardPool.sol"; import { IERC4626, IERC20Metadata } from "./interfaces/IERC4626.sol"; import { IERC20 } from "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import { ReentrancyGuard } from "@openzeppelin/contracts-0.6/utils/ReentrancyGuard.sol"; import { SafeERC20 } from "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title BaseRewardPool4626 * @notice Simply wraps the BaseRewardPool with the new IERC4626 Vault standard functions. * @dev See https://github.com/fei-protocol/ERC4626/blob/main/src/interfaces/IERC4626.sol#L58 * This is not so much a vault as a Reward Pool, therefore asset:share ratio is always 1:1. * To create most utility for this RewardPool, the "asset" has been made to be the crvLP(Wombat LP) token, * as opposed to the cvxLP (wmxLP) token. Therefore, users can easily deposit crvLP(Wombat LP), and it will first * go to the Booster and mint the cvxLP(wmxLP) before performing the normal staking function. */ contract BaseRewardPool4626 is BaseRewardPool, ReentrancyGuard, IERC4626 { using SafeERC20 for IERC20; /** * @notice The address of the underlying ERC20 token used for * the Vault for accounting, depositing, and withdrawing. */ address public override asset; mapping (address => mapping (address => uint256)) private _allowances; /** * @dev See BaseRewardPool.sol */ constructor( uint256 pid_, address stakingToken_, address rewardToken_, address operator_, address lptoken_ ) public BaseRewardPool(pid_, stakingToken_, rewardToken_, operator_) { asset = lptoken_; IERC20(asset).safeApprove(operator_, type(uint256).max); } function _onOperatorUpdate() internal override { IERC20(asset).safeApprove(operator, 0); IERC20(asset).safeApprove(operator, type(uint256).max); } /** * @notice Total amount of the underlying asset that is "managed" by Vault. */ function totalAssets() external view virtual override returns(uint256){ return totalSupply(); } /** * @notice Mints `shares` Vault shares to `receiver`. * @dev Because `asset` is not actually what is collected here, first wrap to required token in the booster. */ function deposit(uint256 assets, address receiver) public virtual override nonReentrant returns (uint256) { // Transfer "asset" (crvLP) from sender IERC20(asset).safeTransferFrom(msg.sender, address(this), assets); // Convert crvLP to cvxLP through normal booster deposit process, but don't stake uint256 balBefore = stakingToken.balanceOf(address(this)); IDeposit(operator).deposit(pid, assets, false); uint256 balAfter = stakingToken.balanceOf(address(this)); require(balAfter.sub(balBefore) >= assets, "!deposit"); // Perform stake manually, now that the funds have been received _processStake(assets, receiver); emit Deposit(msg.sender, receiver, assets, assets); emit Staked(receiver, assets); return assets; } /** * @notice Mints exactly `shares` Vault shares to `receiver` * by depositing `assets` of underlying tokens. */ function mint(uint256 shares, address receiver) external virtual override returns (uint256) { return deposit(shares, receiver); } /** * @notice Redeems `shares` from `owner` and sends `assets` * of underlying tokens to `receiver`. */ function withdraw( uint256 assets, address receiver, address owner ) public virtual override nonReentrant returns (uint256) { if (msg.sender != owner) { _approve(owner, msg.sender, _allowances[owner][msg.sender].sub(assets, "ERC4626: withdrawal amount exceeds allowance")); } _withdrawAndUnwrapTo(assets, owner, receiver); emit Withdraw(msg.sender, receiver, owner, assets, assets); return assets; } /** * @notice Redeems `shares` from `owner` and sends `assets` * of underlying tokens to `receiver`. */ function redeem( uint256 shares, address receiver, address owner ) external virtual override returns (uint256) { return withdraw(shares, receiver, owner); } /** * @notice The amount of shares that the vault would * exchange for the amount of assets provided, in an * ideal scenario where all the conditions are met. */ function convertToShares(uint256 assets) public view virtual override returns (uint256) { return assets; } /** * @notice The amount of assets that the vault would * exchange for the amount of shares provided, in an * ideal scenario where all the conditions are met. */ function convertToAssets(uint256 shares) public view virtual override returns (uint256) { return shares; } /** * @notice Total number of underlying assets that can * be deposited by `owner` into the Vault, where `owner` * corresponds to the input parameter `receiver` of a * `deposit` call. */ function maxDeposit(address /* owner */) public view virtual override returns (uint256) { return type(uint256).max; } /** * @notice Allows an on-chain or off-chain user to simulate * the effects of their deposit at the current block, given * current on-chain conditions. */ function previewDeposit(uint256 assets) external view virtual override returns(uint256){ return convertToShares(assets); } /** * @notice Total number of underlying shares that can be minted * for `owner`, where `owner` corresponds to the input * parameter `receiver` of a `mint` call. */ function maxMint(address owner) external view virtual override returns (uint256) { return maxDeposit(owner); } /** * @notice Allows an on-chain or off-chain user to simulate * the effects of their mint at the current block, given * current on-chain conditions. */ function previewMint(uint256 shares) external view virtual override returns(uint256){ return convertToAssets(shares); } /** * @notice Total number of underlying assets that can be * withdrawn from the Vault by `owner`, where `owner` * corresponds to the input parameter of a `withdraw` call. */ function maxWithdraw(address owner) public view virtual override returns (uint256) { return balanceOf(owner); } /** * @notice Allows an on-chain or off-chain user to simulate * the effects of their withdrawal at the current block, * given current on-chain conditions. */ function previewWithdraw(uint256 assets) public view virtual override returns(uint256 shares){ return convertToShares(assets); } /** * @notice Total number of underlying shares that can be * redeemed from the Vault by `owner`, where `owner` corresponds * to the input parameter of a `redeem` call. */ function maxRedeem(address owner) external view virtual override returns (uint256) { return maxWithdraw(owner); } /** * @notice Allows an on-chain or off-chain user to simulate * the effects of their redeemption at the current block, * given current on-chain conditions. */ function previewRedeem(uint256 shares) external view virtual override returns(uint256){ return previewWithdraw(shares); } /* ========== IERC20 ========== */ /** * @dev Returns the name of the token. */ function name() external view virtual override returns (string memory) { return string( abi.encodePacked(IERC20Metadata(address(stakingToken)).name(), " Vault") ); } /** * @dev Returns the symbol of the token. */ function symbol() external view virtual override returns (string memory) { return string( abi.encodePacked(IERC20Metadata(address(stakingToken)).symbol(), "-vault") ); } /** * @dev Returns the decimals places of the token. */ function decimals() external view override returns (uint8) { return 18; } /** * @dev Returns the amount of tokens in existence. */ function totalSupply() public view override(BaseRewardPool, IERC20) returns (uint256) { return BaseRewardPool.totalSupply(); } /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) public view override(BaseRewardPool, IERC20) returns (uint256) { return BaseRewardPool.balanceOf(account); } /** * @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 override returns (bool) { revert("ERC4626: Not supported"); } /** * @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(msg.sender, spender, amount); return true; } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC4626: approve from the zero address"); require(spender != address(0), "ERC4626: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. */ function transferFrom(address /* sender */, address /* recipient */, uint256 /* amount */) external override returns (bool) { revert("ERC4626: Not supported"); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.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 guidelines: functions revert instead * of 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 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual 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 {_setupDecimals} is * called. * * 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 returns (uint8) { return _decimals; } /** * @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); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); 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].add(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) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is 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); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(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: * * - `to` 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 = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(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); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(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 Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @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 to 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 { } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <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 pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/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 SafeMath for uint256; 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' // solhint-disable-next-line max-line-length 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).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _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 // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <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; // solhint-disable-next-line no-inline-assembly 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"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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 // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <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 GSN 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 payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ 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; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: BaseRewardPool.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ import "./interfaces/Interfaces.sol"; import "./interfaces/MathUtil.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title BaseRewardPool * @author Synthetix -> ConvexFinance -> WombexFinance * @notice Unipool rewards contract that is re-deployed from rFactory for each staking pool. * @dev Changes made here by ConvexFinance are to do with the delayed reward allocation. Curve is queued for * rewards and the distribution only begins once the new rewards are sufficiently large, or the epoch * has ended. Also some changes from WombexFinance. */ contract BaseRewardPool { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public immutable stakingToken; IERC20 public immutable boosterRewardToken; uint256 public constant MAX_TOKENS = 100; uint256 public duration = 7 days; uint256 public newRewardRatio = 830; address public operator; uint256 public pid; mapping(address => uint8) public tokenDecimals; mapping(address => uint256) internal _balances; uint256 internal _totalSupply; struct RewardState { address token; uint256 periodFinish; uint256 rewardRate; uint256 lastUpdateTime; uint256 rewardPerTokenStored; uint256 queuedRewards; uint256 currentRewards; uint256 historicalRewards; bool paused; } mapping(address => RewardState) public tokenRewards; address[] public allRewardTokens; mapping(address => mapping(address => uint256)) public userRewardPerTokenPaid; mapping(address => mapping(address => uint256)) public rewards; event UpdateOperatorData(address indexed sender, address indexed operator, uint256 indexed pid); event UpdateRatioData(address indexed sender, uint256 duration, uint256 newRewardRatio); event UpdateTokenDecimals(address indexed sender, address token, uint8 decimals); event SetRewardTokenPaused(address indexed sender, address indexed token, bool indexed paused); event RewardAdded(address indexed token, uint256 currentRewards, uint256 newRewards); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed token, address indexed user, uint256 reward); event Donate(address indexed token, uint256 amount); /** * @dev This is called directly from RewardFactory * @param pid_ Effectively the pool identifier - used in the Booster * @param stakingToken_ Pool LP token * @param boosterRewardToken_ Reward token for call booster on queueNewRewards * @param operator_ Booster */ constructor( uint256 pid_, address stakingToken_, address boosterRewardToken_, address operator_ ) public { pid = pid_; stakingToken = IERC20(stakingToken_); boosterRewardToken = IERC20(boosterRewardToken_); operator = operator_; } function updateOperatorData(address operator_, uint256 pid_) external { require(msg.sender == operator, "!authorized"); operator = operator_; pid = pid_; _onOperatorUpdate(); emit UpdateOperatorData(msg.sender, operator_, pid_); } function setRewardParams(uint256 duration_, uint256 newRewardRatio_) external { require(msg.sender == IBooster(operator).owner(), "!authorized"); duration = duration_; newRewardRatio = newRewardRatio_; emit UpdateRatioData(msg.sender, duration_, newRewardRatio_); } function setTokenDecimals(address token_, uint8 decimals_) external { require(msg.sender == IBooster(operator).owner(), "!authorized"); tokenDecimals[token_] = decimals_; emit UpdateTokenDecimals(msg.sender, token_, decimals_); } function setRewardTokenPaused(address token_, bool paused_) external { require(msg.sender == operator, "!authorized"); tokenRewards[token_].paused = paused_; emit SetRewardTokenPaused(msg.sender, token_, paused_); } function totalSupply() public view virtual returns (uint256) { return _totalSupply; } function balanceOf(address account) public view virtual returns (uint256) { return _balances[account]; } modifier updateReward(address account) { uint256 len = allRewardTokens.length; for (uint256 i = 0; i < len; i++) { RewardState storage rState = tokenRewards[allRewardTokens[i]]; rState.rewardPerTokenStored = _rewardPerToken(rState); rState.lastUpdateTime = _lastTimeRewardApplicable(rState); if (account != address(0)) { rewards[rState.token][account] = _earned(rState, account); userRewardPerTokenPaid[rState.token][account] = rState.rewardPerTokenStored; } } _; } function lastTimeRewardApplicable(address _token) public view returns (uint256) { return _lastTimeRewardApplicable(tokenRewards[_token]); } function rewardPerToken(address _token) public view returns (uint256) { return _rewardPerToken(tokenRewards[_token]); } function earned(address _token, address _account) public view returns (uint256) { return _earned(tokenRewards[_token], _account); } function claimableRewards(address _account) external view returns (address[] memory tokens, uint256[] memory amounts) { tokens = allRewardTokens; amounts = new uint256[](allRewardTokens.length); for (uint256 i = 0; i < tokens.length; i++) { amounts[i] = _earned(tokenRewards[tokens[i]], _account); } } function stake(uint256 _amount) public virtual returns(bool) { _processStake(_amount, msg.sender); stakingToken.safeTransferFrom(msg.sender, address(this), _amount); emit Staked(msg.sender, _amount); return true; } function stakeAll() external returns(bool) { uint256 balance = stakingToken.balanceOf(msg.sender); stake(balance); return true; } function stakeFor(address _for, uint256 _amount) public virtual returns(bool) { _processStake(_amount, _for); //take away from sender stakingToken.safeTransferFrom(msg.sender, address(this), _amount); emit Staked(_for, _amount); return true; } /** * @dev Generic internal staking function that basically does 3 things: update rewards based * on previous balance, trigger also on any child contracts, then update balances. * @param _amount Units to add to the users balance * @param _receiver Address of user who will receive the stake */ function _processStake(uint256 _amount, address _receiver) internal updateReward(_receiver) { require(_amount > 0, 'RewardPool : Cannot stake 0'); _totalSupply = _totalSupply.add(_amount); _balances[_receiver] = _balances[_receiver].add(_amount); } function withdraw(uint256 amount, bool claim) public virtual updateReward(msg.sender) returns(bool) { require(amount > 0, 'RewardPool : Cannot withdraw 0'); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); stakingToken.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); if(claim){ getReward(msg.sender, false); } return true; } function withdrawAndUnwrap(uint256 amount, bool claim) public virtual returns(bool) { _withdrawAndUnwrapTo(amount, msg.sender, msg.sender); //get rewards too if(claim){ getReward(msg.sender, false); } return true; } function _withdrawAndUnwrapTo(uint256 amount, address from, address receiver) internal virtual updateReward(from) returns(bool){ _totalSupply = _totalSupply.sub(amount); _balances[from] = _balances[from].sub(amount); //tell operator to withdraw from here directly to user IDeposit(operator).withdrawTo(pid,amount,receiver); emit Withdrawn(from, amount); return true; } function withdrawAllAndUnwrap(bool claim) external{ withdrawAndUnwrap(_balances[msg.sender],claim); } /** * @dev Called by a staker to get their allocated rewards */ function getReward() external returns(bool){ return _getReward(msg.sender, msg.sender, false, allRewardTokens); } /** * @dev Gives a staker their rewards, with the option of claiming extra rewards * @param _account Account for which to claim * @param _lockCvx Get the child rewards too? */ function getReward(address _account, bool _lockCvx) public virtual returns(bool){ return _getReward(_account, _account, _lockCvx, allRewardTokens); } /** * @dev Gives a staker their rewards, with the option of claiming extra rewards * @param _account Account for which to claim * @param _lockCvx Get the child rewards too? */ function getReward(address _account, bool _lockCvx, address[] memory _claimTokens) public virtual returns(bool){ return _getReward(_account, _account, _lockCvx, _claimTokens); } function _getReward(address _account, address _claimTo, bool _lockCvx, address[] memory _claimTokens) internal virtual updateReward(_account) returns(bool) { uint256 len = _claimTokens.length; for (uint256 i = 0; i < len; i++) { RewardState storage rState = tokenRewards[_claimTokens[i]]; if (rState.paused || rState.lastUpdateTime == 0) { continue; } uint256 reward = _earned(rState, _account); if (reward > 0) { rewards[rState.token][_account] = 0; IERC20(rState.token).safeTransfer(_claimTo, reward); if (rState.token == address(boosterRewardToken)) { IDeposit(operator).rewardClaimed(pid, _account, reward, _lockCvx); } emit RewardPaid(rState.token, _account, reward); } } return true; } /** * @dev Donate some extra rewards to this contract */ function donate(address _token, uint256 _amount) external { require(_token != address(boosterRewardToken), "booster_reward_token"); uint256 balanceBefore = IERC20(_token).balanceOf(address(this)); IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount); _amount = IERC20(_token).balanceOf(address(this)).sub(balanceBefore); tokenRewards[_token].queuedRewards = tokenRewards[_token].queuedRewards.add(_amount); emit Donate(_token, _amount); } /** * @dev Processes queued rewards in isolation, providing the period has finished. * This allows a cheaper way to trigger rewards on low value pools. */ function processIdleRewards() external { uint256 len = allRewardTokens.length; for (uint256 i = 0; i < len; i++) { RewardState storage rState = tokenRewards[allRewardTokens[i]]; if (block.timestamp >= rState.periodFinish && rState.queuedRewards > 0) { _notifyRewardAmount(rState, rState.queuedRewards); rState.queuedRewards = 0; } } } /** * @dev Called by the booster to allocate new Crv/WOM rewards to this pool * Curve is queued for rewards and the distribution only begins once the new rewards are sufficiently * large, or the epoch has ended. */ function queueNewRewards(address _token, uint256 _rewards) external returns(bool){ require(msg.sender == operator, "!authorized"); uint256 balanceBefore = IERC20(_token).balanceOf(address(this)); IERC20(_token).safeTransferFrom(msg.sender, address(this), _rewards); _rewards = IERC20(_token).balanceOf(address(this)).sub(balanceBefore); RewardState storage rState = tokenRewards[_token]; if (rState.lastUpdateTime == 0) { rState.token = _token; allRewardTokens.push(_token); if (tokenDecimals[_token] == 0) { tokenDecimals[_token] = ERC20(_token).decimals(); } require(allRewardTokens.length <= MAX_TOKENS, "!`max_tokens`"); } _rewards = _rewards.add(rState.queuedRewards); if (block.timestamp >= rState.periodFinish) { _notifyRewardAmount(rState, _rewards); rState.queuedRewards = 0; return true; } //et = now - (finish-duration) uint256 elapsedTime = block.timestamp.sub(rState.periodFinish.sub(duration)); //current at now: rewardRate * elapsedTime uint256 currentAtNow = rState.rewardRate * elapsedTime; uint256 queuedRatio = currentAtNow.mul(1000).div(_rewards); //uint256 queuedRatio = currentRewards.mul(1000).div(_rewards); if(queuedRatio < newRewardRatio){ _notifyRewardAmount(rState, _rewards); rState.queuedRewards = 0; }else{ rState.queuedRewards = _rewards; } return true; } function _notifyRewardAmount(RewardState storage _rState, uint256 _reward) internal updateReward(address(0)) { _rState.historicalRewards = _rState.historicalRewards.add(_reward); if (block.timestamp >= _rState.periodFinish) { _rState.rewardRate = _reward.div(duration); } else { uint256 remaining = _rState.periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(_rState.rewardRate); _reward = _reward.add(leftover); _rState.rewardRate = _reward.div(duration); } _rState.currentRewards = _reward; _rState.lastUpdateTime = block.timestamp; _rState.periodFinish = block.timestamp.add(duration); emit RewardAdded(_rState.token, _rState.currentRewards, _reward); } function _lastTimeRewardApplicable(RewardState storage _rState) internal view returns (uint256) { return MathUtil.min(block.timestamp, _rState.periodFinish); } function _earned(RewardState storage _rState, address account) internal view returns (uint256) { uint256 divider = 36 - tokenDecimals[_rState.token]; return balanceOf(account) .mul(_rewardPerToken(_rState).sub(userRewardPerTokenPaid[_rState.token][account])) .div(10 ** divider) .add(rewards[_rState.token][account]); } function _rewardPerToken(RewardState storage _rState) internal view returns (uint256) { if (totalSupply() == 0) { return _rState.rewardPerTokenStored; } uint256 multiplier = 36 - tokenDecimals[_rState.token]; return _rState.rewardPerTokenStored.add( _lastTimeRewardApplicable(_rState) .sub(_rState.lastUpdateTime) .mul(_rState.rewardRate) .mul(10 ** multiplier) .div(totalSupply()) ); } function DURATION() external view returns (uint256) { return duration; } function NEW_REWARD_RATIO() external view returns (uint256) { return newRewardRatio; } function rewardTokensLen() external view returns (uint256) { return allRewardTokens.length; } function rewardTokensList() external view returns (address[] memory) { return allRewardTokens; } function _onOperatorUpdate() internal virtual { } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import { IERC20 } from "@openzeppelin/contracts-0.6/token/ERC20/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 pragma solidity 0.6.12; import { IERC20Metadata } from "./IERC20Metadata.sol"; /// @title ERC4626 interface /// See: https://eips.ethereum.org/EIPS/eip-4626 abstract contract IERC4626 is IERC20Metadata { /*//////////////////////////////////////////////////////// Events ////////////////////////////////////////////////////////*/ /// @notice `caller` has exchanged `assets` for `shares`, and transferred those `shares` to `owner` event Deposit( address indexed caller, address indexed owner, uint256 assets, uint256 shares ); /// @notice `caller` has exchanged `shares`, owned by `owner`, for /// `assets`, and transferred those `assets` to `receiver`. event Withdraw( address indexed caller, address indexed receiver, address indexed owner, uint256 assets, uint256 shares ); /*//////////////////////////////////////////////////////// Vault properties ////////////////////////////////////////////////////////*/ /// @notice The address of the underlying ERC20 token used for /// the Vault for accounting, depositing, and withdrawing. function asset() external view virtual returns(address); /// @notice Total amount of the underlying asset that /// is "managed" by Vault. function totalAssets() external view virtual returns(uint256); /*//////////////////////////////////////////////////////// Deposit/Withdrawal Logic ////////////////////////////////////////////////////////*/ /// @notice Mints `shares` Vault shares to `receiver` by /// depositing exactly `assets` of underlying tokens. function deposit(uint256 assets, address receiver) external virtual returns(uint256 shares); /// @notice Mints exactly `shares` Vault shares to `receiver` /// by depositing `assets` of underlying tokens. function mint(uint256 shares, address receiver) external virtual returns(uint256 assets); /// @notice Redeems `shares` from `owner` and sends `assets` /// of underlying tokens to `receiver`. function withdraw(uint256 assets, address receiver, address owner) external virtual returns(uint256 shares); /// @notice Redeems `shares` from `owner` and sends `assets` /// of underlying tokens to `receiver`. function redeem(uint256 shares, address receiver, address owner) external virtual returns(uint256 assets); /*//////////////////////////////////////////////////////// Vault Accounting Logic ////////////////////////////////////////////////////////*/ /// @notice The amount of shares that the vault would /// exchange for the amount of assets provided, in an /// ideal scenario where all the conditions are met. function convertToShares(uint256 assets) external view virtual returns(uint256 shares); /// @notice The amount of assets that the vault would /// exchange for the amount of shares provided, in an /// ideal scenario where all the conditions are met. function convertToAssets(uint256 shares) external view virtual returns(uint256 assets); /// @notice Total number of underlying assets that can /// be deposited by `owner` into the Vault, where `owner` /// corresponds to the input parameter `receiver` of a /// `deposit` call. function maxDeposit(address owner) external view virtual returns(uint256 maxAssets); /// @notice Allows an on-chain or off-chain user to simulate /// the effects of their deposit at the current block, given /// current on-chain conditions. function previewDeposit(uint256 assets) external view virtual returns(uint256 shares); /// @notice Total number of underlying shares that can be minted /// for `owner`, where `owner` corresponds to the input /// parameter `receiver` of a `mint` call. function maxMint(address owner) external view virtual returns(uint256 maxShares); /// @notice Allows an on-chain or off-chain user to simulate /// the effects of their mint at the current block, given /// current on-chain conditions. function previewMint(uint256 shares) external view virtual returns(uint256 assets); /// @notice Total number of underlying assets that can be /// withdrawn from the Vault by `owner`, where `owner` /// corresponds to the input parameter of a `withdraw` call. function maxWithdraw(address owner) external view virtual returns(uint256 maxAssets); /// @notice Allows an on-chain or off-chain user to simulate /// the effects of their withdrawal at the current block, /// given current on-chain conditions. function previewWithdraw(uint256 assets) external view virtual returns(uint256 shares); /// @notice Total number of underlying shares that can be /// redeemed from the Vault by `owner`, where `owner` corresponds /// to the input parameter of a `redeem` call. function maxRedeem(address owner) external view virtual returns(uint256 maxShares); /// @notice Allows an on-chain or off-chain user to simulate /// the effects of their redeemption at the current block, /// given current on-chain conditions. function previewRedeem(uint256 shares) external view virtual returns(uint256 assets); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; interface IMasterWombat { function deposit(uint256 _pid, uint256 _amount) external; function balanceOf(address) external view returns(uint256); function userInfo(uint256, address) external view returns (uint128 amount, uint128 factor, uint128 rewardDebt, uint128 pendingWom); function withdraw(uint256 _pid, uint256 _amount) external; function poolLength() external view returns(uint256); function poolInfo(uint256 _pid) external view returns (address lpToken, uint96 allocPoint, IMasterWombatRewarder rewarder, uint256 sumOfFactors, uint104 accWomPerShare, uint104 accWomPerFactorShare, uint40 lastRewardTimestamp); function migrate(uint256[] calldata _pids) external view; function newMasterWombat() external view returns (address); } interface IMasterWombatRewarder { function rewardTokens() external view returns (address[] memory tokens); } interface IBooster { function owner() external view returns(address); } interface IVeWom { function mint(uint256 amount, uint256 lockDays) external returns (uint256 veWomAmount); function burn(uint256 slot) external; function vote(uint256, bool, bool) external; //voteId, support, executeIfDecided } interface IVoting{ function vote(uint256, bool, bool) external; //voteId, support, executeIfDecided function getVote(uint256) external view returns(bool,bool,uint64,uint64,uint64,uint64,uint256,uint256,uint256,bytes memory); function vote_for_gauge_weights(address,uint256) external; } interface IMinter{ function mint(address) external; function updateOperator() external; function operator() external returns(address); } interface ICvxLocker { function lock(address _account, uint256 _amount) external; } interface IStaker{ function deposit(address, address) external returns (bool); function withdraw(address) external returns (uint256); function withdrawLp(address, address, uint256) external returns (bool); function withdrawAllLp(address, address) external returns (bool); function lock(uint256 _lockDays) external; function releaseLock(uint256 _slot) external returns(uint256); function getGaugeRewardTokens(address _lptoken, address _gauge) external returns (address[] memory tokens); function claimCrv(address, address) external returns (address[] memory tokens); function balanceOfPool(address, address) external view returns (uint256); function operator() external view returns (address); function execute(address _to, uint256 _value, bytes calldata _data) external payable returns (bool, bytes memory); function setVote(bytes32 hash, bool valid) external; function setOperator(address _operator) external; function setOwner(address _owner) external; function setDepositor(address _depositor) external; function lpTokenToPid(address _gauge, address _lptoken) external view returns (uint256); function lpTokenPidSet(address _gauge, address _lptoken) external view returns (bool); } interface IBoosterEarmark { function earmarkRewards(uint256 _pid) external; function earmarkRewardsIfAvailable(uint256 _pid) external; function earmarkIncentive() external view returns (uint256); function earmarkPeriod() external view returns (uint256); function distributionByTokenLength(address _token) external view returns (uint256); function distributionByTokens(address, uint256) external view returns (address, uint256, bool); function distributionTokenList() external view returns (address[] memory); function updateDistributionByTokens(address _token, address[] memory _distros, uint256[] memory _shares, bool[] memory _callQueue) external; function setEarmarkConfig(uint256 _earmarkIncentive, uint256 _earmarkPeriod) external; function transferOwnership(address newOwner) external; function addPool(address _lptoken, address _gauge) external returns (uint256); function addCreatedPool(address _lptoken, address _gauge, address _token, address _crvRewards) external returns (uint256); } interface IRewards{ function pid() external view returns(uint256); function stake(address, uint256) external; function stakeFor(address, uint256) external; function withdraw(address, uint256) external; function exit(address) external; function getReward(address) external; function queueNewRewards(address, uint256) external; function notifyRewardAmount(uint256) external; function setRewardTokenPaused(address, bool) external; function updateOperatorData(address, uint256) external; function addExtraReward(address) external; function extraRewardsLength() external view returns (uint256); function stakingToken() external view returns (address); function rewardToken() external view returns(address); function earned(address account) external view returns (uint256); function setRatioData(uint256 duration_, uint256 newRewardRatio_) external; } interface ITokenMinter{ function mint(address,uint256) external; function burn(address,uint256) external; function updateOperator(address) external; } interface IDeposit{ function isShutdown() external view returns(bool); function balanceOf(address _account) external view returns(uint256); function totalSupply() external view returns(uint256); function poolInfo(uint256) external view returns(address,address,address,address,address, bool); function rewardClaimed(uint256,address,uint256,bool) external; function withdrawTo(uint256,uint256,address) external; function claimRewards(uint256,address) external returns(bool); function rewardArbitrator() external returns(address); function setGaugeRedirect(uint256 _pid) external returns(bool); function owner() external returns(address); function deposit(uint256 _pid, uint256 _amount, bool _stake) external returns(bool); } interface ICrvDeposit{ function deposit(uint256, bool) external; function lockIncentive() external view returns(uint256); } interface IRewardFactory{ function setAccess(address,bool) external; function CreateCrvRewards(uint256,address,address) external returns(address); function CreateTokenRewards(address,address,address) external returns(address); function activeRewardCount(address) external view returns(uint256); function addActiveReward(address,uint256) external returns(bool); function removeActiveReward(address,uint256) external returns(bool); } interface IStashFactory{ function CreateStash(uint256,address,address,uint256) external returns(address); } interface ITokenFactory{ function CreateDepositToken(address) external returns(address); } interface IPools{ function addPool(address _lptoken, address _gauge, uint256 _stashVersion) external returns(bool); function forceAddPool(address _lptoken, address _gauge, uint256 _stashVersion) external returns(bool); function shutdownPool(uint256 _pid) external returns(bool); function poolInfo(uint256) external view returns(address,address,address,address,address,bool); function poolLength() external view returns (uint256); function gaugeMap(address) external view returns(bool); function setPoolManager(address _poolM) external; } interface IVestedEscrow{ function fund(address[] calldata _recipient, uint256[] calldata _amount) external returns(bool); } interface IRewardDeposit { function addReward(address, uint256) external; } interface IWETH { function deposit() external payable; } interface IExtraRewardsDistributor { function addReward(address _token, uint256 _amount) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; /** * @dev Standard math utilities missing in the Solidity language. */ library MathUtil { /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } }
{ "metadata": { "bytecodeHash": "none" }, "optimizer": { "enabled": true, "runs": 800 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokenDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokenRewards","outputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"periodFinish","type":"uint256"},{"internalType":"uint256","name":"rewardRate","type":"uint256"},{"internalType":"uint256","name":"lastUpdateTime","type":"uint256"},{"internalType":"uint256","name":"rewardPerTokenStored","type":"uint256"},{"internalType":"uint256","name":"queuedRewards","type":"uint256"},{"internalType":"uint256","name":"currentRewards","type":"uint256"},{"internalType":"uint256","name":"historicalRewards","type":"uint256"},{"internalType":"bool","name":"paused","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAssets","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator_","type":"address"},{"internalType":"uint256","name":"pid_","type":"uint256"}],"name":"updateOperatorData","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"claim","type":"bool"}],"name":"withdraw","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"claim","type":"bool"}],"name":"withdrawAllAndUnwrap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"claim","type":"bool"}],"name":"withdrawAndUnwrap","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000002d70cf40c442226844cfe2c22f5c076bfe893df8000000000000000000000000c0b314a8c08637685fc3dafc477b92028c540cfb0000000000000000000000004181e561b42fdad14c68b0794c215deb9bc80c8f00000000000000000000000075eaa804518a66196946598317aed57ef86235fe
-----Decoded View---------------
Arg [0] : pid_ (uint256): 12
Arg [1] : stakingToken_ (address): 0x2d70CF40C442226844cfE2c22f5C076bfe893DF8
Arg [2] : rewardToken_ (address): 0xc0B314a8c08637685Fc3daFC477b92028c540CFB
Arg [3] : operator_ (address): 0x4181E561b42fDaD14c68b0794c215DeB9Bc80c8F
Arg [4] : lptoken_ (address): 0x75Eaa804518a66196946598317Aed57Ef86235Fe
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000000000000c
Arg [1] : 0000000000000000000000002d70cf40c442226844cfe2c22f5c076bfe893df8
Arg [2] : 000000000000000000000000c0b314a8c08637685fc3dafc477b92028c540cfb
Arg [3] : 0000000000000000000000004181e561b42fdad14c68b0794c215deb9bc80c8f
Arg [4] : 00000000000000000000000075eaa804518a66196946598317aed57ef86235fe
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Multichain Portfolio | 27 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ARB | 100.00% | $0.007005 | 14.9367 | $0.1046 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.