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Minimal Proxy Contract for 0xffa4587c1b2e373469ab6a8fe0ce4dbdb10282d5
Contract Name:
ExtraRewardStashV3
Compiler Version
v0.6.12+commit.27d51765
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./interfaces/IRewardHook.sol"; import "./StashToken.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/proxy/Clones.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title ExtraRewardStashV3 * @author ConvexFinance -> AuraFinance * @notice ExtraRewardStash for pools added to the Booster to handle extra rewards * that aren't CRV that can be claimed from a gauge. * - v3.0: Support for curve gauge reward redirect * The Booster contract has a function called setGaugeRedirect. This function calls set_rewards_receiver * On the Curve Guage. This tells the Gauge where to send rewards. The Booster crafts the calldata for this * transaction and then calls execute on the VoterProxy which executes this transaction on the Curve Gauge * - v3.1: Support for arbitrary token rewards outside of gauge rewards add * reward hook to pull rewards during claims * - v3.2: Move constuctor to init function for proxy creation */ contract ExtraRewardStashV3 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public immutable crv; uint256 private constant maxRewards = 8; uint256 public pid; address public operator; address public staker; address public gauge; address public rewardFactory; address public stashTokenImplementation; mapping(address => uint256) public historicalRewards; bool public hasRedirected; bool public hasCurveRewards; struct TokenInfo { address token; address rewardAddress; address stashToken; } //use mapping+array so that we dont have to loop check each time setToken is called mapping(address => TokenInfo) public tokenInfo; address[] public tokenList; //address to call for reward pulls address public rewardHook; /** * @param _crv CRV token address */ constructor(address _crv) public { crv = _crv; } /** * @param _pid Pool ID * @param _operator Operator (Booster) * @param _staker Staker (VoterProxy) * @param _gauge Gauge * @param _rFactory Reward factory */ function initialize(uint256 _pid, address _operator, address _staker, address _gauge, address _rFactory) external { require(gauge == address(0),"!init"); pid = _pid; operator = _operator; staker = _staker; gauge = _gauge; rewardFactory = _rFactory; stashTokenImplementation = address(new StashToken(address(this))); } function getName() external pure returns (string memory) { return "ExtraRewardStashV3.2"; } function tokenCount() external view returns (uint256){ return tokenList.length; } /** * @notice Claim rewards from the gauge * @dev The Stash's claimRewards function calls claimRewards on the Booster contract * which calls claimRewards on the VoterProxy which calls claim_rewards on the gauge * If a RewardHook is set onRewardClaim is also called on that * Called by Booster earmarkRewards * Guage rewards are sent directly to this stash even though the Curve method claim_rewards * is being called by the VoterProxy. This is because Curves guages have the ability to redirect * rewards to somewhere other than msg.sender. This is setup in Booster setGaugeRedirect */ function claimRewards() external returns (bool) { require(msg.sender == operator, "!operator"); //this is updateable from v2 gauges now so must check each time. checkForNewRewardTokens(); //make sure we're redirected if(!hasRedirected){ IDeposit(operator).setGaugeRedirect(pid); hasRedirected = true; } if(hasCurveRewards){ //claim rewards on gauge for staker //using reward_receiver so all rewards will be moved to this stash IDeposit(operator).claimRewards(pid,gauge); } //hook for reward pulls if(rewardHook != address(0)){ try IRewardHook(rewardHook).onRewardClaim(){ }catch{} } return true; } //check if gauge rewards have changed function checkForNewRewardTokens() internal { for(uint256 i = 0; i < maxRewards; i++){ address token = ICurveGauge(gauge).reward_tokens(i); if (token == address(0)) { break; } if(!hasCurveRewards){ hasCurveRewards = true; } setToken(token); } } //register an extra reward token to be handled // (any new incentive that is not directly on curve gauges) function setExtraReward(address _token) external{ //owner of booster can set extra rewards require(IDeposit(operator).owner() == msg.sender, "!owner"); require(tokenList.length < 4, "too many rewards"); setToken(_token); } function setRewardHook(address _hook) external{ //owner of booster can set reward hook require(IDeposit(operator).owner() == msg.sender, "!owner"); rewardHook = _hook; } /** * @notice Add a reward token to the token list so it can be claimed * @dev For each token that is added as a claimable reward a VirtualRewardsPool * is deployed to handle virtual distribution of tokens */ function setToken(address _token) internal { TokenInfo storage t = tokenInfo[_token]; if(t.token == address(0) && _token != crv){ //set token address t.token = _token; StashToken stashToken = StashToken(Clones.clone(stashTokenImplementation)); // we only want to add rewards that are not CRV //create new reward contract (for NON-crv tokens only) (,,,address mainRewardContract,,) = IDeposit(operator).poolInfo(pid); address rewardContract = IRewardFactory(rewardFactory).CreateTokenRewards( address(stashToken), mainRewardContract, address(this)); stashToken.init(operator, rewardContract, _token); t.rewardAddress = rewardContract; t.stashToken = address(stashToken); //add token to list of known rewards tokenList.push(_token); } } //pull assigned tokens from staker to stash function stashRewards() external pure returns(bool){ //after depositing/withdrawing, extra incentive tokens are claimed //but from v3 this is default to off, and this stash is the reward receiver too. return true; } /** * @notice Distribute rewards * @dev Send all extra token rewards to the rewardContract VirtualRewardsPool * Called by Booster earmarkRewards */ function processStash() external returns(bool){ require(msg.sender == operator, "!operator"); uint256 tCount = tokenList.length; for(uint i=0; i < tCount; i++){ TokenInfo storage t = tokenInfo[tokenList[i]]; address token = t.token; if(token == address(0)) continue; if(!StashToken(t.stashToken).isValid()) continue; uint256 amount = IERC20(token).balanceOf(address(this)); if (amount > 0) { historicalRewards[token] = historicalRewards[token].add(amount); //add to reward contract address rewards = t.rewardAddress; if(rewards == address(0)) continue; address stashToken = t.stashToken; IERC20(token).safeApprove(stashToken, 0); IERC20(token).safeApprove(stashToken, amount); StashToken(stashToken).mint(amount); IRewards(rewards).queueNewRewards(amount); } } return true; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/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 () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), 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 { emit OwnershipTransferred(_owner, address(0)); _owner = 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"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// 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; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. * * _Available since v3.4._ */ library Clones { /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `master`. * * This function uses the create opcode, which should never revert. */ function clone(address master) internal returns (address instance) { // solhint-disable-next-line no-inline-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, master)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create(0, ptr, 0x37) } require(instance != address(0), "ERC1167: create failed"); } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `master`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `master` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address master, bytes32 salt) internal returns (address instance) { // solhint-disable-next-line no-inline-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, master)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create2(0, ptr, 0x37, salt) } require(instance != address(0), "ERC1167: create2 failed"); } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress(address master, bytes32 salt, address deployer) internal pure returns (address predicted) { // solhint-disable-next-line no-inline-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, master)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000) mstore(add(ptr, 0x38), shl(0x60, deployer)) mstore(add(ptr, 0x4c), salt) mstore(add(ptr, 0x6c), keccak256(ptr, 0x37)) predicted := keccak256(add(ptr, 0x37), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress(address master, bytes32 salt) internal view returns (address predicted) { return predictDeterministicAddress(master, salt, address(this)); } }
// 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 // solhint-disable-next-line compiler-version pragma solidity >=0.4.24 <0.8.0; import "../utils/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 {UpgradeableProxy-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. */ 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() { require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <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; // 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); } 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; import "../proxy/Initializable.sol"; /** * @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 ReentrancyGuardUpgradeable is Initializable { // 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; function __ReentrancyGuard_init() internal initializer { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal initializer { _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; } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title ArbitratorVault * @author ConvexFinance * @notice Hold extra reward tokens on behalf of pools that have the same token as a reward (e.g. stkAAVE fro multiple aave pools) * @dev Sits on top of the STASH to basically handle the re-distribution of rewards to multiple stashes. * Because anyone can call gauge.claim_rewards(address) for the convex staking contract, rewards * could be forced to the wrong pool. Hold tokens here and distribute fairly(or at least more fairly), * to both pools at a later timing. */ contract ArbitratorVault{ using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public operator; address public immutable depositor; /** * @param _depositor Booster address */ constructor(address _depositor)public { operator = msg.sender; depositor = _depositor; } function setOperator(address _op) external { require(msg.sender == operator, "!auth"); operator = _op; } /** * @notice Permissioned fn to distribute any accrued rewards to a relevant stash * @dev Only called by operator: ConvexMultisig */ function distribute(address _token, uint256[] calldata _toPids, uint256[] calldata _amounts) external { require(msg.sender == operator, "!auth"); for(uint256 i = 0; i < _toPids.length; i++){ //get stash from pid (,,,,address stashAddress,bool shutdown) = IDeposit(depositor).poolInfo(_toPids[i]); //if sent to a shutdown pool, could get trapped require(shutdown==false,"pool closed"); //transfer IERC20(_token).safeTransfer(stashAddress, _amounts[i]); } } }
// 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.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/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title BaseRewardPool * @author Synthetix -> ConvexFinance * @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. Additionally, enables hooks for `extraRewards` that can be enabled at any point to * distribute a child reward token (i.e. a secondary one from Curve, or a seperate one). */ contract BaseRewardPool { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public immutable rewardToken; IERC20 public immutable stakingToken; uint256 public constant duration = 7 days; address public immutable operator; address public immutable rewardManager; uint256 public immutable pid; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; uint256 public queuedRewards = 0; uint256 public currentRewards = 0; uint256 public historicalRewards = 0; uint256 public constant newRewardRatio = 830; uint256 private _totalSupply; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) internal _balances; address[] public extraRewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev This is called directly from RewardFactory * @param pid_ Effectively the pool identifier - used in the Booster * @param stakingToken_ Pool LP token * @param rewardToken_ Crv * @param operator_ Booster * @param rewardManager_ RewardFactory */ constructor( uint256 pid_, address stakingToken_, address rewardToken_, address operator_, address rewardManager_ ) public { pid = pid_; stakingToken = IERC20(stakingToken_); rewardToken = IERC20(rewardToken_); operator = operator_; rewardManager = rewardManager_; } function totalSupply() public view virtual returns (uint256) { return _totalSupply; } function balanceOf(address account) public view virtual returns (uint256) { return _balances[account]; } function extraRewardsLength() external view returns (uint256) { return extraRewards.length; } function addExtraReward(address _reward) external returns(bool){ require(msg.sender == rewardManager, "!authorized"); require(_reward != address(0),"!reward setting"); if(extraRewards.length >= 12){ return false; } extraRewards.push(_reward); return true; } function clearExtraRewards() external{ require(msg.sender == rewardManager, "!authorized"); delete extraRewards; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return MathUtil.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stake(uint256 _amount) public 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 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'); //also stake to linked rewards for(uint i=0; i < extraRewards.length; i++){ IRewards(extraRewards[i]).stake(_receiver, _amount); } _totalSupply = _totalSupply.add(_amount); _balances[_receiver] = _balances[_receiver].add(_amount); emit Transfer(address(0), _receiver, _amount); } function withdraw(uint256 amount, bool claim) public updateReward(msg.sender) returns(bool) { require(amount > 0, 'RewardPool : Cannot withdraw 0'); //also withdraw from linked rewards for(uint i=0; i < extraRewards.length; i++){ IRewards(extraRewards[i]).withdraw(msg.sender, amount); } _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,true); } emit Transfer(msg.sender, address(0), amount); return true; } function withdrawAll(bool claim) external{ withdraw(_balances[msg.sender],claim); } function withdrawAndUnwrap(uint256 amount, bool claim) public returns(bool){ _withdrawAndUnwrapTo(amount, msg.sender, msg.sender); //get rewards too if(claim){ getReward(msg.sender,true); } return true; } function _withdrawAndUnwrapTo(uint256 amount, address from, address receiver) internal updateReward(from) returns(bool){ //also withdraw from linked rewards for(uint i=0; i < extraRewards.length; i++){ IRewards(extraRewards[i]).withdraw(from, amount); } _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); emit Transfer(from, address(0), amount); return true; } function withdrawAllAndUnwrap(bool claim) external{ withdrawAndUnwrap(_balances[msg.sender],claim); } /** * @dev Gives a staker their rewards, with the option of claiming extra rewards * @param _account Account for which to claim * @param _claimExtras Get the child rewards too? */ function getReward(address _account, bool _claimExtras) public updateReward(_account) returns(bool){ uint256 reward = earned(_account); if (reward > 0) { rewards[_account] = 0; rewardToken.safeTransfer(_account, reward); IDeposit(operator).rewardClaimed(pid, _account, reward); emit RewardPaid(_account, reward); } //also get rewards from linked rewards if(_claimExtras){ for(uint i=0; i < extraRewards.length; i++){ IRewards(extraRewards[i]).getReward(_account); } } return true; } /** * @dev Called by a staker to get their allocated rewards */ function getReward() external returns(bool){ getReward(msg.sender,true); return true; } /** * @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 { if (block.timestamp >= periodFinish && queuedRewards > 0) { notifyRewardAmount(queuedRewards); queuedRewards = 0; } } /** * @dev Called by the booster to allocate new Crv 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(uint256 _rewards) external returns(bool){ require(msg.sender == operator, "!authorized"); _rewards = _rewards.add(queuedRewards); if (block.timestamp >= periodFinish) { notifyRewardAmount(_rewards); queuedRewards = 0; return true; } //et = now - (finish-duration) uint256 elapsedTime = block.timestamp.sub(periodFinish.sub(duration)); //current at now: rewardRate * elapsedTime uint256 currentAtNow = rewardRate * elapsedTime; uint256 queuedRatio = currentAtNow.mul(1000).div(_rewards); //uint256 queuedRatio = currentRewards.mul(1000).div(_rewards); if(queuedRatio < newRewardRatio){ notifyRewardAmount(_rewards); queuedRewards = 0; }else{ queuedRewards = _rewards; } return true; } function notifyRewardAmount(uint256 reward) internal updateReward(address(0)) { historicalRewards = historicalRewards.add(reward); if (block.timestamp >= periodFinish) { rewardRate = reward.div(duration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); reward = reward.add(leftover); rewardRate = reward.div(duration); } currentRewards = reward; lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(duration); emit RewardAdded(reward); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import { IRewards } from "./Interfaces.sol"; 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 token, * as opposed to the cvxLP token. Therefore, users can easily deposit crvLP, and it will first * go to the Booster and mint the cvxLP 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 rewardManager_, address lptoken_ ) public BaseRewardPool(pid_, stakingToken_, rewardToken_, operator_, rewardManager_) { asset = lptoken_; 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 override returns (string memory) { return string( abi.encodePacked(IERC20Metadata(address(stakingToken)).name(), " Vault") ); } /** * @dev Returns the symbol of the token. */ function symbol() external view 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) { _transfer(msg.sender, 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(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 owner, address recipient, uint256 amount) external override returns (bool) { uint256 newAllowance = _allowances[owner][msg.sender].sub(amount, "ERC4626: withdrawal amount exceeds allowance"); _approve(owner, msg.sender, newAllowance); _transfer(owner, recipient, amount); return true; } function _transfer(address from, address to, uint256 amount) internal updateReward(from) updateReward(to) virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); for(uint i=0; i < extraRewards.length; i++){ IRewards(extraRewards[i]).withdraw(from , amount); IRewards(extraRewards[i]).stake(to, amount); } _balances[from] = fromBalance.sub(amount); _balances[to] = _balances[to].add(amount); emit Transfer(from, to, amount); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/utils/ReentrancyGuard.sol"; /** * @title Booster * @author ConvexFinance * @notice Main deposit contract; keeps track of pool info & user deposits; distributes rewards. * @dev They say all paths lead to Rome, and the cvxBooster is no different. This is where it all goes down. * It is responsible for tracking all the pools, it collects rewards from all pools and redirects it. */ contract Booster is ReentrancyGuard { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public immutable crv; address public immutable voteOwnership; address public immutable voteParameter; uint256 public lockIncentive = 825; //incentive to crv stakers uint256 public stakerIncentive = 825; //incentive to native token stakers uint256 public earmarkIncentive = 50; //incentive to users who spend gas to make calls uint256 public platformFee = 0; //possible fee to build treasury uint256 public constant MaxFees = 4000; uint256 public constant FEE_DENOMINATOR = 10000; address public owner; address public feeManager; address public poolManager; address public immutable staker; address public immutable minter; address public rewardFactory; address public stashFactory; address public tokenFactory; address public rewardArbitrator; address public voteDelegate; address public treasury; address public stakerRewards; //cvx rewards address public lockRewards; //cvxCrv rewards(crv) address public bridgeDelegate; mapping(uint256 => uint256) public l2FeesHistory; uint256 immutable epochLength = 1 weeks; mapping(address => FeeDistro) public feeTokens; struct FeeDistro { address distro; address rewards; bool active; } bool public isShutdown; struct PoolInfo { address lptoken; address token; address gauge; address crvRewards; address stash; bool shutdown; } //index(pid) -> pool PoolInfo[] public poolInfo; mapping(address => bool) public gaugeMap; // Reward multiplier for increasing or decreasing AURA rewards per PID uint256 public constant REWARD_MULTIPLIER_DENOMINATOR = 10000; // rewardContract => rewardMultiplier (10000 = 100%) mapping(address => uint256) public getRewardMultipliers; event Deposited(address indexed user, uint256 indexed poolid, uint256 amount); event Withdrawn(address indexed user, uint256 indexed poolid, uint256 amount); event PoolAdded(address lpToken, address gauge, address token, address rewardPool, address stash, uint256 pid); event PoolShutdown(uint256 poolId); event OwnerUpdated(address newOwner); event FeeManagerUpdated(address newFeeManager); event PoolManagerUpdated(address newPoolManager); event FactoriesUpdated(address rewardFactory, address stashFactory, address tokenFactory); event ArbitratorUpdated(address newArbitrator); event VoteDelegateUpdated(address newVoteDelegate); event RewardContractsUpdated(address lockRewards, address stakerRewards); event FeesUpdated(uint256 lockIncentive, uint256 stakerIncentive, uint256 earmarkIncentive, uint256 platformFee); event TreasuryUpdated(address newTreasury); event FeeInfoUpdated(address feeDistro, address lockFees, address feeToken); event FeeInfoChanged(address feeDistro, bool active); /** * @dev Constructor doing what constructors do. It is noteworthy that * a lot of basic config is set to 0 - expecting subsequent calls to setFeeInfo etc. * @param _staker VoterProxy (locks the crv and adds to all gauges) * @param _minter CVX token, or the thing that mints it * @param _crv CRV * @param _voteOwnership Address of the Curve DAO responsible for ownership stuff * @param _voteParameter Address of the Curve DAO responsible for param updates */ constructor( address _staker, address _minter, address _crv, address _voteOwnership, address _voteParameter ) public { staker = _staker; minter = _minter; crv = _crv; voteOwnership = _voteOwnership; voteParameter = _voteParameter; isShutdown = false; owner = msg.sender; voteDelegate = msg.sender; feeManager = msg.sender; poolManager = msg.sender; treasury = address(0); emit OwnerUpdated(msg.sender); emit VoteDelegateUpdated(msg.sender); emit FeeManagerUpdated(msg.sender); emit PoolManagerUpdated(msg.sender); } /// SETTER SECTION /// /** * @notice Owner is responsible for setting initial config, updating vote delegate and shutting system */ function setOwner(address _owner) external { require(msg.sender == owner, "!auth"); owner = _owner; emit OwnerUpdated(_owner); } /** * @notice Fee Manager can update the fees (lockIncentive, stakeIncentive, earmarkIncentive, platformFee) */ function setFeeManager(address _feeM) external { require(msg.sender == owner, "!auth"); feeManager = _feeM; emit FeeManagerUpdated(_feeM); } /** * @notice Pool manager is responsible for adding new pools */ function setPoolManager(address _poolM) external { require(msg.sender == poolManager, "!auth"); poolManager = _poolM; emit PoolManagerUpdated(_poolM); } /** * @notice Factories are used when deploying new pools. Only the stash factory is mutable after init */ function setFactories(address _rfactory, address _sfactory, address _tfactory) external { require(msg.sender == owner, "!auth"); //stash factory should be considered more safe to change //updating may be required to handle new types of gauges stashFactory = _sfactory; //reward factory only allow this to be called once even if owner //removes ability to inject malicious staking contracts //token factory can also be immutable if(rewardFactory == address(0)){ rewardFactory = _rfactory; tokenFactory = _tfactory; emit FactoriesUpdated(_rfactory, _sfactory, _tfactory); } else { emit FactoriesUpdated(address(0), _sfactory, address(0)); } } /** * @notice Arbitrator handles tokens that are used as secondary rewards across multiple pools */ function setArbitrator(address _arb) external { require(msg.sender==owner, "!auth"); rewardArbitrator = _arb; emit ArbitratorUpdated(_arb); } /** * @notice Vote Delegate has the rights to cast votes on the VoterProxy via the Booster */ function setVoteDelegate(address _voteDelegate) external { require(msg.sender==owner, "!auth"); voteDelegate = _voteDelegate; emit VoteDelegateUpdated(_voteDelegate); } /** * @notice Only called once, to set the addresses of cvxCrv (lockRewards) and cvx staking (stakerRewards) */ function setRewardContracts(address _rewards, address _stakerRewards) external { require(msg.sender == owner, "!auth"); //reward contracts are immutable or else the owner //has a means to redeploy and mint cvx via rewardClaimed() if(lockRewards == address(0)){ lockRewards = _rewards; stakerRewards = _stakerRewards; getRewardMultipliers[lockRewards] = REWARD_MULTIPLIER_DENOMINATOR; emit RewardContractsUpdated(_rewards, _stakerRewards); } } /** * @notice Set reward token and claim contract * @dev This creates a secondary (VirtualRewardsPool) rewards contract for the vcxCrv staking contract */ function setFeeInfo(address _feeToken, address _feeDistro) external nonReentrant { require(msg.sender == owner, "!auth"); require(!isShutdown, "shutdown"); require(lockRewards != address(0) && rewardFactory != address(0), "!initialised"); require(_feeToken != address(0) && _feeDistro != address(0), "!addresses"); require(IFeeDistributor(_feeDistro).getTokenTimeCursor(_feeToken) > 0, "!distro"); if(feeTokens[_feeToken].distro == address(0)){ require(!gaugeMap[_feeToken], "!token"); // Distributed directly if(_feeToken == crv){ feeTokens[crv] = FeeDistro({ distro: _feeDistro, rewards: lockRewards, active: true }); emit FeeInfoUpdated(_feeDistro, lockRewards, crv); } else { //create a new reward contract for the new token require(IRewards(lockRewards).extraRewardsLength() < 10, "too many rewards"); address rewards = IRewardFactory(rewardFactory).CreateTokenRewards(_feeToken, lockRewards, address(this)); feeTokens[_feeToken] = FeeDistro({ distro: _feeDistro, rewards: rewards, active: true }); emit FeeInfoUpdated(_feeDistro, rewards, _feeToken); } } else { feeTokens[_feeToken].distro = _feeDistro; emit FeeInfoUpdated(_feeDistro, address(0), _feeToken); } } /** * @notice Allows turning off or on for fee distro */ function updateFeeInfo(address _feeToken, bool _active) external { require(msg.sender==owner, "!auth"); require(feeTokens[_feeToken].distro != address(0), "Fee doesn't exist"); feeTokens[_feeToken].active = _active; emit FeeInfoChanged(_feeToken, _active); } /** * @notice Fee manager can set all the relevant fees * @param _lockFees % for cvxCrv stakers where 1% == 100 * @param _stakerFees % for CVX stakers where 1% == 100 * @param _callerFees % for whoever calls the claim where 1% == 100 * @param _platform % for "treasury" or vlCVX where 1% == 100 */ function setFees(uint256 _lockFees, uint256 _stakerFees, uint256 _callerFees, uint256 _platform) external nonReentrant{ require(msg.sender==feeManager, "!auth"); uint256 total = _lockFees.add(_stakerFees).add(_callerFees).add(_platform); require(total <= MaxFees, ">MaxFees"); require(_lockFees >= 300 && _lockFees <= 3500, "!lockFees"); require(_stakerFees >= 300 && _stakerFees <= 1500, "!stakerFees"); require(_callerFees >= 10 && _callerFees <= 100, "!callerFees"); require(_platform <= 200, "!platform"); lockIncentive = _lockFees; stakerIncentive = _stakerFees; earmarkIncentive = _callerFees; platformFee = _platform; emit FeesUpdated(_lockFees, _stakerFees, _callerFees, _platform); } /** * @notice Set the address of the treasury (i.e. vlCVX) */ function setTreasury(address _treasury) external { require(msg.sender==feeManager, "!auth"); treasury = _treasury; emit TreasuryUpdated(_treasury); } /** * @dev Set bridge delegate * @param _bridgeDelegate The bridge delegate address */ function setBridgeDelegate(address _bridgeDelegate) external { require(msg.sender == feeManager, "!auth"); bridgeDelegate = _bridgeDelegate; } function setRewardMultiplier(address rewardContract, uint256 multiplier) external { require(msg.sender == feeManager, "!auth"); require(multiplier <= REWARD_MULTIPLIER_DENOMINATOR * 2, "too high"); getRewardMultipliers[rewardContract] = multiplier; } /// END SETTER SECTION /// function poolLength() external view returns (uint256) { return poolInfo.length; } /** * @notice Called by the PoolManager (i.e. PoolManagerProxy) to add a new pool - creates all the required * contracts (DepositToken, RewardPool, Stash) and then adds to the list! */ function addPool(address _lptoken, address _gauge, uint256 _stashVersion) external returns(bool){ require(msg.sender==poolManager && !isShutdown, "!add"); require(_gauge != address(0) && _lptoken != address(0),"!param"); require(feeTokens[_gauge].distro == address(0), "!gauge"); //the next pool's pid uint256 pid = poolInfo.length; //create a tokenized deposit address token = ITokenFactory(tokenFactory).CreateDepositToken(_lptoken); //create a reward contract for crv rewards address newRewardPool = IRewardFactory(rewardFactory).CreateCrvRewards(pid,token,_lptoken); //create a stash to handle extra incentives address stash = IStashFactory(stashFactory).CreateStash(pid,_gauge,staker,_stashVersion); //add the new pool poolInfo.push( PoolInfo({ lptoken: _lptoken, token: token, gauge: _gauge, crvRewards: newRewardPool, stash: stash, shutdown: false }) ); gaugeMap[_gauge] = true; //give stashes access to rewardfactory and voteproxy // voteproxy so it can grab the incentive tokens off the contract after claiming rewards // reward factory so that stashes can make new extra reward contracts if a new incentive is added to the gauge if(stash != address(0)){ poolInfo[pid].stash = stash; IStaker(staker).setStashAccess(stash,true); IRewardFactory(rewardFactory).setAccess(stash,true); } // Init the pool with the default reward multiplier getRewardMultipliers[newRewardPool] = REWARD_MULTIPLIER_DENOMINATOR; emit PoolAdded(_lptoken, _gauge, token, newRewardPool, stash, pid); return true; } /** * @notice Shuts down the pool by withdrawing everything from the gauge to here (can later be * claimed from depositors by using the withdraw fn) and marking it as shut down */ function shutdownPool(uint256 _pid) external nonReentrant returns(bool){ require(msg.sender==poolManager, "!auth"); PoolInfo storage pool = poolInfo[_pid]; //withdraw from gauge try IStaker(staker).withdrawAll(pool.lptoken,pool.gauge){ }catch{} pool.shutdown = true; gaugeMap[pool.gauge] = false; emit PoolShutdown(_pid); return true; } /** * @notice Shuts down the WHOLE SYSTEM by withdrawing all the LP tokens to here and then allowing * for subsequent withdrawal by any depositors. */ function shutdownSystem() external{ require(msg.sender == owner, "!auth"); isShutdown = true; for(uint i=0; i < poolInfo.length; i++){ PoolInfo storage pool = poolInfo[i]; if (pool.shutdown) continue; address token = pool.lptoken; address gauge = pool.gauge; //withdraw from gauge try IStaker(staker).withdrawAll(token,gauge){ pool.shutdown = true; }catch{} } } /** * @notice Deposits an "_amount" to a given gauge (specified by _pid), mints a `DepositToken` * and subsequently stakes that on Convex BaseRewardPool */ function deposit(uint256 _pid, uint256 _amount, bool _stake) public nonReentrant returns(bool){ require(!isShutdown,"shutdown"); PoolInfo storage pool = poolInfo[_pid]; require(pool.shutdown == false, "pool is closed"); //send to proxy to stake address lptoken = pool.lptoken; IERC20(lptoken).safeTransferFrom(msg.sender, staker, _amount); //stake address gauge = pool.gauge; require(gauge != address(0),"!gauge setting"); IStaker(staker).deposit(lptoken,gauge); //some gauges claim rewards when depositing, stash them in a seperate contract until next claim address stash = pool.stash; if(stash != address(0)){ IStash(stash).stashRewards(); } address token = pool.token; if(_stake){ //mint here and send to rewards on user behalf ITokenMinter(token).mint(address(this),_amount); address rewardContract = pool.crvRewards; IERC20(token).safeApprove(rewardContract,0); IERC20(token).safeApprove(rewardContract,_amount); IRewards(rewardContract).stakeFor(msg.sender,_amount); }else{ //add user balance directly ITokenMinter(token).mint(msg.sender,_amount); } emit Deposited(msg.sender, _pid, _amount); return true; } /** * @notice Deposits all a senders balance to a given gauge (specified by _pid), mints a `DepositToken` * and subsequently stakes that on Convex BaseRewardPool */ function depositAll(uint256 _pid, bool _stake) external returns(bool){ address lptoken = poolInfo[_pid].lptoken; uint256 balance = IERC20(lptoken).balanceOf(msg.sender); deposit(_pid,balance,_stake); return true; } /** * @notice Withdraws LP tokens from a given PID (& user). * 1. Burn the cvxLP balance from "_from" (implicit balance check) * 2. If pool !shutdown.. withdraw from gauge * 3. If stash, stash rewards * 4. Transfer out the LP tokens */ function _withdraw(uint256 _pid, uint256 _amount, address _from, address _to) internal nonReentrant { PoolInfo storage pool = poolInfo[_pid]; address lptoken = pool.lptoken; address gauge = pool.gauge; //remove lp balance address token = pool.token; ITokenMinter(token).burn(_from,_amount); //pull from gauge if not shutdown // if shutdown tokens will be in this contract if (!pool.shutdown) { IStaker(staker).withdraw(lptoken,gauge, _amount); } //some gauges claim rewards when withdrawing, stash them in a seperate contract until next claim //do not call if shutdown since stashes wont have access address stash = pool.stash; if(stash != address(0) && !isShutdown && !pool.shutdown){ IStash(stash).stashRewards(); } //return lp tokens IERC20(lptoken).safeTransfer(_to, _amount); emit Withdrawn(_to, _pid, _amount); } /** * @notice Withdraw a given amount from a pool (must already been unstaked from the Convex Reward Pool - * BaseRewardPool uses withdrawAndUnwrap to get around this) */ function withdraw(uint256 _pid, uint256 _amount) public returns(bool){ _withdraw(_pid,_amount,msg.sender,msg.sender); return true; } /** * @notice Withdraw all the senders LP tokens from a given gauge */ function withdrawAll(uint256 _pid) public returns(bool){ address token = poolInfo[_pid].token; uint256 userBal = IERC20(token).balanceOf(msg.sender); withdraw(_pid, userBal); return true; } /** * @notice Allows the actual BaseRewardPool to withdraw and send directly to the user */ function withdrawTo(uint256 _pid, uint256 _amount, address _to) external returns(bool){ address rewardContract = poolInfo[_pid].crvRewards; require(msg.sender == rewardContract,"!auth"); _withdraw(_pid,_amount,msg.sender,_to); return true; } /** * @notice set valid vote hash on VoterProxy */ function setVote(bytes32 _hash) external returns(bool){ require(msg.sender == voteDelegate, "!auth"); IStaker(staker).setVote(_hash, false); return true; } /** * @notice Set delegate on snapshot */ function setDelegate(address _delegateContract, address _delegate, bytes32 _space) external{ require(msg.sender == voteDelegate, "!auth"); bytes memory data = abi.encodeWithSelector(bytes4(keccak256("setDelegate(bytes32,address)")), _space, _delegate); IStaker(staker).execute(_delegateContract,uint256(0),data); } /** * @notice Delegate address votes on dao via VoterProxy */ function vote(uint256 _voteId, address _votingAddress, bool _support) external returns(bool){ require(msg.sender == voteDelegate, "!auth"); require(_votingAddress == voteOwnership || _votingAddress == voteParameter, "!voteAddr"); IStaker(staker).vote(_voteId,_votingAddress,_support); return true; } /** * @notice Delegate address votes on gauge weight via VoterProxy */ function voteGaugeWeight(address[] calldata _gauge, uint256[] calldata _weight ) external returns(bool){ require(msg.sender == voteDelegate, "!auth"); for(uint256 i = 0; i < _gauge.length; i++){ IStaker(staker).voteGaugeWeight(_gauge[i],_weight[i]); } return true; } /** * @notice Allows a stash to claim secondary rewards from a gauge */ function claimRewards(uint256 _pid, address _gauge) external returns(bool){ address stash = poolInfo[_pid].stash; require(msg.sender == stash,"!auth"); IStaker(staker).claimRewards(_gauge); return true; } /** * @notice Tells the Curve gauge to redirect any accrued rewards to the given stash via the VoterProxy */ function setGaugeRedirect(uint256 _pid) external returns(bool){ address stash = poolInfo[_pid].stash; require(msg.sender == stash,"!auth"); address gauge = poolInfo[_pid].gauge; bytes memory data = abi.encodeWithSelector(bytes4(keccak256("set_rewards_receiver(address)")), stash); IStaker(staker).execute(gauge,uint256(0),data); return true; } /** * @notice Basically a hugely pivotal function. * Responsible for collecting the crv from gauge, and then redistributing to the correct place. * Pays the caller a fee to process this. */ function _earmarkRewards(uint256 _pid) internal { PoolInfo storage pool = poolInfo[_pid]; require(pool.shutdown == false, "pool is closed"); address gauge = pool.gauge; // If there is idle CRV in the Booster we need to transfer it out // in order that our accounting doesn't get scewed. uint256 crvBBalBefore = IERC20(crv).balanceOf(address(this)); uint256 crvVBalBefore = IERC20(crv).balanceOf(staker); uint256 crvBalBefore = crvBBalBefore.add(crvVBalBefore); //claim crv IStaker(staker).claimCrv(gauge); //crv balance uint256 crvBalAfter = IERC20(crv).balanceOf(address(this)); uint crvBal = crvBalAfter.sub(crvBalBefore); if(crvBalBefore > 0 && treasury != address(0)) { IERC20(crv).transfer(treasury, crvBalBefore); } //check if there are extra rewards address stash = pool.stash; if(stash != address(0)){ //claim extra rewards IStash(stash).claimRewards(); //process extra rewards IStash(stash).processStash(); } if (crvBal > 0) { // LockIncentive = cvxCrv stakers (currently 10%) uint256 _lockIncentive = crvBal.mul(lockIncentive).div(FEE_DENOMINATOR); // StakerIncentive = cvx stakers (currently 5%) uint256 _stakerIncentive = crvBal.mul(stakerIncentive).div(FEE_DENOMINATOR); // CallIncentive = caller of this contract (currently 1%) uint256 _callIncentive = crvBal.mul(earmarkIncentive).div(FEE_DENOMINATOR); // Treasury = vlCVX (currently 1%) if(treasury != address(0) && treasury != address(this) && platformFee > 0){ //only subtract after address condition check uint256 _platform = crvBal.mul(platformFee).div(FEE_DENOMINATOR); crvBal = crvBal.sub(_platform); IERC20(crv).safeTransfer(treasury, _platform); } //remove incentives from balance crvBal = crvBal.sub(_lockIncentive).sub(_callIncentive).sub(_stakerIncentive); //send incentives for calling IERC20(crv).safeTransfer(msg.sender, _callIncentive); //send crv to lp provider reward contract address rewardContract = pool.crvRewards; IERC20(crv).safeTransfer(rewardContract, crvBal); IRewards(rewardContract).queueNewRewards(crvBal); //send lockers' share of crv to reward contract IERC20(crv).safeTransfer(lockRewards, _lockIncentive); IRewards(lockRewards).queueNewRewards(_lockIncentive); //send stakers's share of crv to reward contract IERC20(crv).safeTransfer(stakerRewards, _stakerIncentive); } } /** * @notice Basically a hugely pivotal function. * Responsible for collecting the crv from gauge, and then redistributing to the correct place. * Pays the caller a fee to process this. */ function earmarkRewards(uint256 _pid) external nonReentrant returns(bool){ require(!isShutdown,"shutdown"); _earmarkRewards(_pid); return true; } /** * @notice Claim fees from curve distro contract, put in lockers' reward contract. * lockFees is the secondary reward contract that uses the virtual balances from cvxCrv */ function earmarkFees(address _feeToken) external nonReentrant returns(bool){ require(!isShutdown,"shutdown"); FeeDistro memory feeDistro = feeTokens[_feeToken]; require(feeDistro.active, "Inactive distro"); require(!gaugeMap[_feeToken], "Invalid token"); //claim fee rewards uint256 tokenBalanceVBefore = IERC20(_feeToken).balanceOf(staker); uint256 tokenBalanceBBefore = IERC20(_feeToken).balanceOf(address(this)); uint256 tokenBalanceBefore = tokenBalanceBBefore.add(tokenBalanceVBefore); IStaker(staker).claimFees(feeDistro.distro, _feeToken); uint256 tokenBalanceAfter = IERC20(_feeToken).balanceOf(address(this)); uint256 feesClaimed = tokenBalanceAfter.sub(tokenBalanceBefore); //send fee rewards to reward contract IERC20(_feeToken).safeTransfer(feeDistro.rewards, feesClaimed); IRewards(feeDistro.rewards).queueNewRewards(feesClaimed); return true; } /** * @notice Callback from reward contract when crv is received. * @dev Goes off and mints a relative amount of `CVX` based on the distribution schedule. */ function rewardClaimed(uint256 _pid, address _address, uint256 _amount) external returns(bool){ address rewardContract = poolInfo[_pid].crvRewards; require(msg.sender == rewardContract || msg.sender == lockRewards, "!auth"); uint256 mintAmount = _amount.mul(getRewardMultipliers[msg.sender]).div(REWARD_MULTIPLIER_DENOMINATOR); if(mintAmount > 0) { //mint reward tokens ITokenMinter(minter).mint(_address, mintAmount); } return true; } /** * @dev Distribute fees from L2 to L1 reward contracts * @param _amount Amount of fees to distribute */ function distributeL2Fees(uint256 _amount) external nonReentrant { require(msg.sender == bridgeDelegate, "!auth"); // calculate the rewards that were paid based on the incentives that // are being distributed uint256 totalIncentives = lockIncentive.add(stakerIncentive); uint256 totalFarmed = _amount.mul(FEE_DENOMINATOR).div(totalIncentives); uint256 eligibleForMint = totalFarmed.sub(_amount); // Ensure that the total amount of rewards claimed per epoch is less than 70k uint256 epoch = block.timestamp.div(epochLength); l2FeesHistory[epoch] = l2FeesHistory[epoch].add(totalFarmed); require(l2FeesHistory[epoch] <= 70000e18, "Too many L2 Fees"); // Calculate fees for individual reward contracts uint256 _lockIncentive = _amount.mul(lockIncentive).div(totalIncentives); uint256 _stakerIncentive = _amount.sub(_lockIncentive); //send lockers' share of crv to reward contract IERC20(crv).safeTransferFrom(bridgeDelegate, lockRewards, _lockIncentive); IRewards(lockRewards).queueNewRewards(_lockIncentive); //send stakers's share of crv to reward contract IERC20(crv).safeTransferFrom(bridgeDelegate, stakerRewards, _stakerIncentive); // Mint CVX to bridge delegate ITokenMinter(minter).mint(bridgeDelegate, eligibleForMint); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/utils/ReentrancyGuard.sol"; interface ICoordinator { function queueNewRewards( address, uint256, uint256, address ) external payable; } /** * @title BoosterLite * @author ConvexFinance -> AuraFinance * @dev A lite version of the original Booster for use on sidechains */ contract BoosterLite is ReentrancyGuard { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public crv; uint256 public lockIncentive = 825; //incentive to crv stakers uint256 public stakerIncentive = 825; //incentive to native token stakers uint256 public earmarkIncentive = 50; //incentive to users who spend gas to make calls uint256 public platformFee = 0; //possible fee to build treasury uint256 public constant MaxFees = 4000; uint256 public constant FEE_DENOMINATOR = 10000; address public owner; address public feeManager; address public poolManager; address public immutable staker; address public minter; address public rewardFactory; address public stashFactory; address public tokenFactory; address public treasury; address public rewards; //cvxCrv rewards(crv) bool public isShutdown; struct PoolInfo { address lptoken; address token; address gauge; address crvRewards; address stash; bool shutdown; } //index(pid) -> pool PoolInfo[] public poolInfo; mapping(address => bool) public gaugeMap; event Deposited(address indexed user, uint256 indexed poolid, uint256 amount); event Withdrawn(address indexed user, uint256 indexed poolid, uint256 amount); event PoolAdded(address lpToken, address gauge, address token, address rewardPool, address stash, uint256 pid); event PoolShutdown(uint256 poolId); event OwnerUpdated(address newOwner); event FeeManagerUpdated(address newFeeManager); event PoolManagerUpdated(address newPoolManager); event FactoriesUpdated(address rewardFactory, address stashFactory, address tokenFactory); event RewardContractsUpdated(address rewards); event FeesUpdated(uint256 lockIncentive, uint256 stakerIncentive, uint256 earmarkIncentive, uint256 platformFee); event TreasuryUpdated(address newTreasury); /** * @dev Constructor doing what constructors do. It is noteworthy that * a lot of basic config is set to 0 - expecting subsequent calls setFeeManager etc. * @param _staker VoterProxyLite (locks the crv and adds to all gauges) */ constructor(address _staker) public { staker = _staker; isShutdown = false; owner = msg.sender; treasury = address(0); emit OwnerUpdated(msg.sender); } /** * @notice Initialize the contract. * @param _minter CVX token, or the thing that mints it * @param _crv CRV Token address * @param _owner Owner address */ function initialize( address _minter, address _crv, address _owner ) external { require(msg.sender == owner, "!auth"); require(crv == address(0), "Only once"); minter = _minter; crv = _crv; owner = _owner; feeManager = _owner; poolManager = _owner; emit OwnerUpdated(msg.sender); emit FeeManagerUpdated(msg.sender); emit PoolManagerUpdated(msg.sender); } /// SETTER SECTION /// /** * @notice Owner is responsible for setting initial config, updating vote delegate and shutting system */ function setOwner(address _owner) external { require(msg.sender == owner, "!auth"); owner = _owner; emit OwnerUpdated(_owner); } /** * @notice Fee Manager can update the fees (lockIncentive, stakeIncentive, earmarkIncentive, platformFee) */ function setFeeManager(address _feeM) external { require(msg.sender == owner, "!auth"); feeManager = _feeM; emit FeeManagerUpdated(_feeM); } /** * @notice Pool manager is responsible for adding new pools */ function setPoolManager(address _poolM) external { require(msg.sender == poolManager, "!auth"); poolManager = _poolM; emit PoolManagerUpdated(_poolM); } /** * @notice Factories are used when deploying new pools. Only the stash factory is mutable after init */ function setFactories( address _rfactory, address _sfactory, address _tfactory ) external { require(msg.sender == owner, "!auth"); //stash factory should be considered more safe to change //updating may be required to handle new types of gauges stashFactory = _sfactory; //reward factory only allow this to be called once even if owner //removes ability to inject malicious staking contracts //token factory can also be immutable if (rewardFactory == address(0)) { rewardFactory = _rfactory; tokenFactory = _tfactory; emit FactoriesUpdated(_rfactory, _sfactory, _tfactory); } else { emit FactoriesUpdated(address(0), _sfactory, address(0)); } } /** * @notice Only called once, to set the addresses of cvxCrv (rewards) */ function setRewardContracts(address _rewards) external { require(msg.sender == owner, "!auth"); //reward contracts are immutable or else the owner //has a means to redeploy and mint cvx via rewardClaimed() if (rewards == address(0)) { rewards = _rewards; emit RewardContractsUpdated(_rewards); } } /** * @notice Fee manager can set all the relevant fees * @param _lockFees % for cvxCrv stakers where 1% == 100 * @param _stakerFees % for CVX stakers where 1% == 100 * @param _callerFees % for whoever calls the claim where 1% == 100 * @param _platform % for "treasury" or vlCVX where 1% == 100 */ function setFees( uint256 _lockFees, uint256 _stakerFees, uint256 _callerFees, uint256 _platform ) external nonReentrant { require(msg.sender == feeManager, "!auth"); uint256 total = _lockFees.add(_stakerFees).add(_callerFees).add(_platform); require(total <= MaxFees, ">MaxFees"); require(_lockFees >= 300 && _lockFees <= 3500, "!lockFees"); require(_stakerFees >= 300 && _stakerFees <= 1500, "!stakerFees"); require(_callerFees >= 10 && _callerFees <= 100, "!callerFees"); require(_platform <= 200, "!platform"); lockIncentive = _lockFees; stakerIncentive = _stakerFees; earmarkIncentive = _callerFees; platformFee = _platform; emit FeesUpdated(_lockFees, _stakerFees, _callerFees, _platform); } /** * @notice Set the address of the treasury (i.e. vlCVX) */ function setTreasury(address _treasury) external { require(msg.sender == feeManager, "!auth"); treasury = _treasury; emit TreasuryUpdated(_treasury); } /// END SETTER SECTION /// function poolLength() external view returns (uint256) { return poolInfo.length; } /** * @notice Called by the PoolManager (i.e. PoolManagerProxy) to add a new pool - creates all the required * contracts (DepositToken, RewardPool, Stash) and then adds to the list! */ function addPool( address _lptoken, address _gauge, uint256 _stashVersion ) external returns (bool) { require(msg.sender == poolManager && !isShutdown, "!add"); require(_gauge != address(0) && _lptoken != address(0), "!param"); //the next pool's pid uint256 pid = poolInfo.length; //create a tokenized deposit address token = ITokenFactory(tokenFactory).CreateDepositToken(_lptoken); //create a reward contract for crv rewards address newRewardPool = IRewardFactory(rewardFactory).CreateCrvRewards(pid, token, _lptoken); //create a stash to handle extra incentives address stash = IStashFactory(stashFactory).CreateStash(pid, _gauge, staker, _stashVersion); //add the new pool poolInfo.push( PoolInfo({ lptoken: _lptoken, token: token, gauge: _gauge, crvRewards: newRewardPool, stash: stash, shutdown: false }) ); gaugeMap[_gauge] = true; //give stashes access to rewardfactory and voteproxy // voteproxy so it can grab the incentive tokens off the contract after claiming rewards // reward factory so that stashes can make new extra reward contracts if a new incentive is added to the gauge if (stash != address(0)) { poolInfo[pid].stash = stash; IStaker(staker).setStashAccess(stash, true); IRewardFactory(rewardFactory).setAccess(stash, true); } emit PoolAdded(_lptoken, _gauge, token, newRewardPool, stash, pid); return true; } /** * @notice Shuts down the pool by withdrawing everything from the gauge to here (can later be * claimed from depositors by using the withdraw fn) and marking it as shut down */ function shutdownPool(uint256 _pid) external nonReentrant returns (bool) { require(msg.sender == poolManager, "!auth"); PoolInfo storage pool = poolInfo[_pid]; //withdraw from gauge try IStaker(staker).withdrawAll(pool.lptoken, pool.gauge) {} catch {} pool.shutdown = true; gaugeMap[pool.gauge] = false; emit PoolShutdown(_pid); return true; } /** * @notice Shuts down the WHOLE SYSTEM by withdrawing all the LP tokens to here and then allowing * for subsequent withdrawal by any depositors. */ function shutdownSystem() external { require(msg.sender == owner, "!auth"); isShutdown = true; for (uint256 i = 0; i < poolInfo.length; i++) { PoolInfo storage pool = poolInfo[i]; if (pool.shutdown) continue; address token = pool.lptoken; address gauge = pool.gauge; //withdraw from gauge try IStaker(staker).withdrawAll(token, gauge) { pool.shutdown = true; } catch {} } } /** * @notice Deposits an "_amount" to a given gauge (specified by _pid), mints a `DepositToken` * and subsequently stakes that on Convex BaseRewardPool */ function deposit( uint256 _pid, uint256 _amount, bool _stake ) public nonReentrant returns (bool) { require(!isShutdown, "shutdown"); PoolInfo storage pool = poolInfo[_pid]; require(pool.shutdown == false, "pool is closed"); //send to proxy to stake address lptoken = pool.lptoken; IERC20(lptoken).safeTransferFrom(msg.sender, staker, _amount); //stake address gauge = pool.gauge; require(gauge != address(0), "!gauge setting"); IStaker(staker).deposit(lptoken, gauge); //some gauges claim rewards when depositing, stash them in a seperate contract until next claim address stash = pool.stash; if (stash != address(0)) { IStash(stash).stashRewards(); } address token = pool.token; if (_stake) { //mint here and send to rewards on user behalf ITokenMinter(token).mint(address(this), _amount); address rewardContract = pool.crvRewards; IERC20(token).safeApprove(rewardContract, 0); IERC20(token).safeApprove(rewardContract, _amount); IRewards(rewardContract).stakeFor(msg.sender, _amount); } else { //add user balance directly ITokenMinter(token).mint(msg.sender, _amount); } emit Deposited(msg.sender, _pid, _amount); return true; } /** * @notice Deposits all a senders balance to a given gauge (specified by _pid), mints a `DepositToken` * and subsequently stakes that on Convex BaseRewardPool */ function depositAll(uint256 _pid, bool _stake) external returns (bool) { address lptoken = poolInfo[_pid].lptoken; uint256 balance = IERC20(lptoken).balanceOf(msg.sender); deposit(_pid, balance, _stake); return true; } /** * @notice Withdraws LP tokens from a given PID (& user). * 1. Burn the cvxLP balance from "_from" (implicit balance check) * 2. If pool !shutdown.. withdraw from gauge * 3. If stash, stash rewards * 4. Transfer out the LP tokens */ function _withdraw( uint256 _pid, uint256 _amount, address _from, address _to ) internal nonReentrant { PoolInfo storage pool = poolInfo[_pid]; address lptoken = pool.lptoken; address gauge = pool.gauge; //remove lp balance address token = pool.token; ITokenMinter(token).burn(_from, _amount); //pull from gauge if not shutdown // if shutdown tokens will be in this contract if (!pool.shutdown) { IStaker(staker).withdraw(lptoken, gauge, _amount); } //some gauges claim rewards when withdrawing, stash them in a seperate contract until next claim //do not call if shutdown since stashes wont have access address stash = pool.stash; if (stash != address(0) && !isShutdown && !pool.shutdown) { IStash(stash).stashRewards(); } //return lp tokens IERC20(lptoken).safeTransfer(_to, _amount); emit Withdrawn(_to, _pid, _amount); } /** * @notice Withdraw a given amount from a pool (must already been unstaked from the Convex Reward Pool - * BaseRewardPool uses withdrawAndUnwrap to get around this) */ function withdraw(uint256 _pid, uint256 _amount) public returns (bool) { _withdraw(_pid, _amount, msg.sender, msg.sender); return true; } /** * @notice Withdraw all the senders LP tokens from a given gauge */ function withdrawAll(uint256 _pid) public returns (bool) { address token = poolInfo[_pid].token; uint256 userBal = IERC20(token).balanceOf(msg.sender); withdraw(_pid, userBal); return true; } /** * @notice Allows the actual BaseRewardPool to withdraw and send directly to the user */ function withdrawTo( uint256 _pid, uint256 _amount, address _to ) external returns (bool) { address rewardContract = poolInfo[_pid].crvRewards; require(msg.sender == rewardContract, "!auth"); _withdraw(_pid, _amount, msg.sender, _to); return true; } /** * @notice Allows a stash to claim secondary rewards from a gauge */ function claimRewards(uint256 _pid, address _gauge) external returns (bool) { address stash = poolInfo[_pid].stash; require(msg.sender == stash, "!auth"); IStaker(staker).claimRewards(_gauge); return true; } /** * @notice Tells the Curve gauge to redirect any accrued rewards to the given stash via the VoterProxy */ function setGaugeRedirect(uint256 _pid) external returns (bool) { address stash = poolInfo[_pid].stash; require(msg.sender == stash, "!auth"); address gauge = poolInfo[_pid].gauge; bytes memory data = abi.encodeWithSelector(bytes4(keccak256("set_rewards_receiver(address)")), stash); IStaker(staker).execute(gauge, uint256(0), data); return true; } /** * @notice Basically a hugely pivotal function. * Responsible for collecting the crv from gauge, and then redistributing to the correct place. * Pays the caller a fee to process this. */ function _earmarkRewards(uint256 _pid, address _zroPaymentAddress) internal { PoolInfo storage pool = poolInfo[_pid]; require(pool.shutdown == false, "pool is closed"); uint256 crvBal; { // If there is idle CRV in the Booster we need to transfer it out // in order that our accounting doesn't get scewed. uint256 crvBBalBefore = IERC20(crv).balanceOf(address(this)); uint256 crvVBalBefore = IERC20(crv).balanceOf(staker); uint256 crvBalBefore = crvBBalBefore.add(crvVBalBefore); //claim crv IStaker(staker).claimCrv(pool.gauge); //crv balance uint256 crvBalAfter = IERC20(crv).balanceOf(address(this)); crvBal = crvBalAfter.sub(crvBalBefore); if (crvBalBefore > 0 && treasury != address(0)) { IERC20(crv).safeTransfer(treasury, crvBalBefore); } } //check if there are extra rewards address stash = pool.stash; if (stash != address(0)) { //claim extra rewards IStash(stash).claimRewards(); //process extra rewards IStash(stash).processStash(); } if (crvBal > 0) { // LockIncentive = cvxCrv stakers uint256 _lockIncentive = crvBal.mul(lockIncentive).div(FEE_DENOMINATOR); // StakerIncentive = cvx stakers uint256 _stakerIncentive = crvBal.mul(stakerIncentive).div(FEE_DENOMINATOR); // CallIncentive = caller of this contract uint256 _callIncentive = crvBal.mul(earmarkIncentive).div(FEE_DENOMINATOR); // Platform incentives uint256 _platformIncentive = crvBal.mul(platformFee).div(FEE_DENOMINATOR); uint256 _totalIncentive = _lockIncentive.add(_stakerIncentive).add(_platformIncentive); //remove incentives from balance crvBal = crvBal.sub(_totalIncentive).sub(_callIncentive); //send incentives for calling IERC20(crv).safeTransfer(msg.sender, _callIncentive); //send crv to lp provider reward contract address rewardContract = pool.crvRewards; IERC20(crv).safeTransfer(rewardContract, crvBal); IRewards(rewardContract).queueNewRewards(crvBal); //send lockers' share of crv to reward contract IERC20(crv).safeTransfer(rewards, _totalIncentive); ICoordinator(rewards).queueNewRewards{ value: msg.value }( msg.sender, _totalIncentive, crvBal, _zroPaymentAddress ); } } /** * @notice Basically a hugely pivotal function. * Responsible for collecting the crv from gauge, and then redistributing to the correct place. * Pays the caller a fee to process this. */ function earmarkRewards(uint256 _pid, address _zroPaymentAddress) external payable nonReentrant returns (bool) { require(!isShutdown, "shutdown"); _earmarkRewards(_pid, _zroPaymentAddress); return true; } /** * @notice Callback from reward contract when crv is received. * @dev Goes off and mints a relative amount of `CVX` based on the distribution schedule. */ function rewardClaimed( uint256 _pid, address _address, uint256 _amount ) external returns (bool) { address rewardContract = poolInfo[_pid].crvRewards; require(msg.sender == rewardContract, "!auth"); if (_amount > 0) { //mint reward tokens ITokenMinter(minter).mint(_address, _amount); } return true; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; interface IOwner { //booster function setFactories(address _rfactory, address _sfactory, address _tfactory) external; function setArbitrator(address _arb) external; function setFeeInfo(address _feeToken, address _feeDistro) external; function updateFeeInfo(address _feeToken, bool _active) external; function shutdownSystem() external; function isShutdown() external view returns(bool); function poolLength() external view returns(uint256); function poolInfo(uint256) external view returns(address,address,address,address,address,bool); function setVoteDelegate(address _voteDelegate) external; function setFeeManager(address _feeM) external; function setOwner(address _owner) external; //rescue function setDistribution(address _distributor, address _rewardDeposit, address _treasury) external; function setExtraReward(address _token, uint256 _option) external; //stash function setExtraReward(address _token) external; function setRewardHook(address _hook) external; //stash factory function setImplementation(address _v1, address _v2, address _v3) external; //vote extension function revertControl() external; } // prettier-ignore interface IBoosterOwner { function transferOwnership(address _owner) external; function acceptOwnership() external; function setFactories(address _rfactory, address _sfactory, address _tfactory) external; function setArbitrator(address _arb) external; function setFeeInfo(address _feeToken, address _feeDistro) external; function updateFeeInfo(address _feeToken, bool _active) external; function setFeeManager(address _feeM) external; function setVoteDelegate(address _voteDelegate) external; function shutdownSystem() external; function queueForceShutdown() external; function forceShutdownSystem() external; function execute( address _to, uint256 _value, bytes calldata _data) external returns (bool, bytes memory); function setRescueTokenDistribution(address _distributor, address _rewardDeposit, address _treasury) external; function setRescueTokenReward(address _token, uint256 _option) external; function setStashExtraReward(address _stash, address _token) external; function setStashRewardHook(address _stash, address _hook) external; function setStashFactoryImplementation(address _v1, address _v2, address _v3) external; } /** * @title Booster * @author ConvexFinance * @notice Immutable booster owner that requires all pools to be shutdown before shutting down the entire convex system * @dev A timelock is required if forcing a shutdown if there is a bugged pool that can not be withdrawn from. * Allow arbitrary calls to other contracts, but limit how calls are made to Booster. */ contract BoosterOwner is IBoosterOwner{ address public immutable poolManager; address public immutable booster; address public immutable stashFactory; address public immutable rescueStash; address public owner; address public pendingowner; bool public isSealed; uint256 public constant FORCE_DELAY = 30 days; bool public isForceTimerStarted; uint256 public forceTimestamp; event ShutdownStarted(uint256 executableTimestamp); event ShutdownExecuted(); event TransferOwnership(address pendingOwner); event AcceptedOwnership(address newOwner); event OwnershipSealed(); /** * @param _owner Owner (e.g. CVX multisig) * @param _poolManager PoolManager (e.g. PoolManagerSecondaryProxy or 0xD20904e5916113D11414F083229e9C8C6F91D1e1) * @param _booster The booster (e.g. 0xF403C135812408BFbE8713b5A23a04b3D48AAE31) * @param _stashFactory Creates stashes (e.g. 0x884da067B66677e72530df91eabb6e3CE69c2bE4) * @param _rescueStash Rescues tokens for subsequent vlCVX redistribution (e.g. 0x01140351069af98416cC08b16424b9E765436531) */ constructor( address _owner, address _poolManager, address _booster, address _stashFactory, address _rescueStash, bool _seal ) public { owner = _owner; poolManager = _poolManager; booster = _booster; stashFactory = _stashFactory; rescueStash = _rescueStash; isSealed = _seal; } modifier onlyOwner() { require(owner == msg.sender, "!owner"); _; } function transferOwnership(address _owner) external override onlyOwner{ pendingowner = _owner; emit TransferOwnership(_owner); } function acceptOwnership() external override { require(pendingowner == msg.sender, "!pendingowner"); owner = pendingowner; pendingowner = address(0); emit AcceptedOwnership(owner); } function sealOwnership() external onlyOwner{ isSealed = true; emit OwnershipSealed(); } function setBoosterOwner() external onlyOwner{ //allow reverting ownership until sealed require(!isSealed, "ownership sealed"); //transfer booster ownership to this owner IOwner(booster).setOwner(owner); } function setFactories(address _rfactory, address _sfactory, address _tfactory) external override onlyOwner{ IOwner(booster).setFactories(_rfactory, _sfactory, _tfactory); } function setArbitrator(address _arb) external override onlyOwner{ IOwner(booster).setArbitrator(_arb); } function setFeeInfo(address _feeToken, address _feeDistro) external override onlyOwner{ IOwner(booster).setFeeInfo(_feeToken, _feeDistro); } function updateFeeInfo(address _feeToken, bool _active) external override onlyOwner{ IOwner(booster).updateFeeInfo(_feeToken, _active); } function setFeeManager(address _feeM) external override onlyOwner{ IOwner(booster).setFeeManager(_feeM); } function setVoteDelegate(address _voteDelegate) external override onlyOwner{ IOwner(booster).setVoteDelegate(_voteDelegate); } function shutdownSystem() external override onlyOwner{ require(IOwner(poolManager).isShutdown(),"!poolMgrShutdown"); //check that all pools are already shutdown uint256 poolCount = IOwner(booster).poolLength(); for(uint256 i = 0; i < poolCount; i++){ (,,,,,bool isshutdown) = IOwner(booster).poolInfo(i); require(isshutdown, "!poolShutdown"); } //complete the shutdown process IOwner(booster).shutdownSystem(); emit ShutdownExecuted(); } //queue a forced shutdown that does not require pools to already be shutdown //this should only be needed if a pool is broken and withdrawAll() does not //correctly return enough lp tokens function queueForceShutdown() external override onlyOwner{ require(IOwner(poolManager).isShutdown(),"!poolMgrShutdown"); require(!isForceTimerStarted, "already started"); isForceTimerStarted = true; forceTimestamp = block.timestamp + FORCE_DELAY; emit ShutdownStarted(forceTimestamp); } //force shutdown the system after timer has expired function forceShutdownSystem() external override onlyOwner{ require(isForceTimerStarted, "!timer start"); require(block.timestamp > forceTimestamp, "!timer finish"); IOwner(booster).shutdownSystem(); emit ShutdownExecuted(); } //allow arbitrary calls to any contract other than the booster, as some contracts //may use ownership as booster.owner() instead of local variable function execute( address _to, uint256 _value, bytes calldata _data ) external override onlyOwner returns (bool, bytes memory) { require(_to != booster, "!invalid target"); (bool success, bytes memory result) = _to.call{value:_value}(_data); return (success, result); } // --- Helper functions for other systems, could also just use execute() --- //TokenRescue setDistribution function setRescueTokenDistribution(address _distributor, address _rewardDeposit, address _treasury) external override onlyOwner{ IOwner(rescueStash).setDistribution(_distributor, _rewardDeposit, _treasury); } //TokenRescue setExtraReward function setRescueTokenReward(address _token, uint256 _option) external override onlyOwner{ IOwner(rescueStash).setExtraReward(_token, _option); } //stash v3 - set extra reward function setStashExtraReward(address _stash, address _token) external override onlyOwner{ IOwner(_stash).setExtraReward(_token); } //stash v3 - set reward hook function setStashRewardHook(address _stash, address _hook) external override onlyOwner{ IOwner(_stash).setRewardHook(_hook); } //stash factory - set implementation function setStashFactoryImplementation(address _v1, address _v2, address _v3) external override onlyOwner{ IOwner(stashFactory).setImplementation(_v1, _v2, _v3); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import { IPools, IStash, IStashFactory } from "./Interfaces.sol"; import { IBoosterOwner } from "./BoosterOwner.sol"; interface IFeeTokenVerifier { function checkToken(address) external view returns (bool); } /** * @title BoosterOwnerSecondary * @author ConvexFinance -> AuraFinance * @notice Immutable booster owner that requires all pools to be shutdown before shutting down the entire convex system * @dev A timelock is required if forcing a shutdown if there is a bugged pool that can not be withdrawn from. * Allow arbitrary calls to other contracts, but limit how calls are made to Booster. */ contract BoosterOwnerSecondary { IPools public immutable booster; IBoosterOwner public immutable boosterOwner; uint256 public immutable oldPidCheckpoint; address public owner; address public manager; address public pendingowner; bool public sealStashImplementation; address public feeTokenVerifier; event TransferOwnership(address pendingOwner); event AcceptedOwnership(address newOwner); event SealStashImplementation(); event SetFeeTokenVerifier(address feeTokenVerifier); event SetManager(address manager); /** * @param _owner Owner (e.g. CVX multisig) * @param _boosterOwner BoosterOwner */ constructor( address _owner, address _boosterOwner, address _booster ) public { owner = _owner; manager = _owner; boosterOwner = IBoosterOwner(_boosterOwner); booster = IPools(_booster); oldPidCheckpoint = IPools(_booster).poolLength() - 1; } /* ---------------------------------------------------------------- * Modifiers * ------------------------------------------------------------- */ modifier onlyOwner() { require(owner == msg.sender, "!owner"); _; } modifier onlyManager() { require(manager == msg.sender, "!manager"); _; } /* ---------------------------------------------------------------- * Setters * ------------------------------------------------------------- */ function setSealStashImplementation() external onlyOwner { sealStashImplementation = true; emit SealStashImplementation(); } function setFeeTokenVerifier(address _feeTokenVerifier) external onlyManager { feeTokenVerifier = _feeTokenVerifier; emit SetFeeTokenVerifier(_feeTokenVerifier); } function setManager(address _manager) external onlyOwner { require(manager != address(0), "sealed"); manager = _manager; emit SetManager(_manager); } function transferOwnership(address _owner) external onlyOwner { pendingowner = _owner; emit TransferOwnership(_owner); } function acceptOwnership() external { require(pendingowner == msg.sender, "!pendingowner"); owner = pendingowner; pendingowner = address(0); emit AcceptedOwnership(owner); } /* ---------------------------------------------------------------- * Booster Functions * ------------------------------------------------------------- */ function acceptOwnershipBoosterOwner() external { boosterOwner.acceptOwnership(); } function setArbitrator(address _arb) external onlyOwner { boosterOwner.setArbitrator(_arb); } function setFeeInfo(address _feeToken, address _feeDistro) external onlyOwner { if (feeTokenVerifier != address(0)) { require(IFeeTokenVerifier(feeTokenVerifier).checkToken(_feeToken), "!verified"); } boosterOwner.setFeeInfo(_feeToken, _feeDistro); } function updateFeeInfo(address _feeToken, bool _active) external onlyOwner { boosterOwner.updateFeeInfo(_feeToken, _active); } function setFeeManager(address _feeM) external onlyOwner { boosterOwner.setFeeManager(_feeM); } function setVoteDelegate(address _voteDelegate) external onlyOwner { boosterOwner.setVoteDelegate(_voteDelegate); } function shutdownSystem() external onlyOwner { boosterOwner.shutdownSystem(); } function queueForceShutdown() external onlyOwner { boosterOwner.queueForceShutdown(); } function forceShutdownSystem() external onlyOwner { boosterOwner.forceShutdownSystem(); } function setStashFactoryImplementation( address _v1, address _v2, address _v3 ) external onlyOwner { require(!sealStashImplementation, "sealed"); boosterOwner.setStashFactoryImplementation(_v1, _v2, _v3); } function execute( address _to, uint256 _value, bytes memory _data ) external onlyOwner returns (bool, bytes memory) { bytes4 sig; assembly { sig := mload(add(_data, 32)) } require( sig != IBoosterOwner.setFactories.selector && sig != IStashFactory.setImplementation.selector && sig != IStash.setExtraReward.selector && sig != IBoosterOwner.setFeeInfo.selector, "!allowed" ); (bool success, bytes memory result) = boosterOwner.execute(_to, _value, _data); require(success, "!success"); return (success, result); } // --- Helper functions for other systems, could also just use execute() --- function setRescueTokenDistribution( address _distributor, address _rewardDeposit, address _treasury ) external onlyOwner { boosterOwner.setRescueTokenDistribution(_distributor, _rewardDeposit, _treasury); } function setRescueTokenReward(address _token, uint256 _option) external onlyOwner { boosterOwner.setRescueTokenReward(_token, _option); } function setStashExtraReward(uint256 _pid, address _token) external onlyOwner { require(_pid > oldPidCheckpoint, "!checkpoint"); (, , , , address stash, ) = booster.poolInfo(_pid); boosterOwner.setStashExtraReward(stash, _token); } function setStashRewardHook(address _stash, address _hook) external onlyOwner { boosterOwner.setStashRewardHook(_stash, _hook); } function setStashTokenIsValid(address stashToken, bool isValid) external onlyOwner { bytes memory data = abi.encodeWithSignature("setIsValid(bool)", isValid); (bool success, ) = boosterOwner.execute(stashToken, 0, data); require(success, "!success"); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/ERC20.sol"; /** * @title cvxCrvToken * @author ConvexFinance * @notice Dumb ERC20 token that allows the operator (crvDepositor) to mint and burn tokens */ contract cvxCrvToken is ERC20 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public operator; constructor(string memory _nameArg, string memory _symbolArg) public ERC20( _nameArg, _symbolArg ) { operator = msg.sender; } /** * @notice Allows the initial operator (deployer) to set the operator. * Note - crvDepositor has no way to change this back, so it's effectively immutable */ function setOperator(address _operator) external { require(msg.sender == operator, "!auth"); operator = _operator; } /** * @notice Allows the crvDepositor to mint */ function mint(address _to, uint256 _amount) external { require(msg.sender == operator, "!authorized"); _mint(_to, _amount); } /** * @notice Allows the crvDepositor to burn */ function burn(address _from, uint256 _amount) external { require(msg.sender == operator, "!authorized"); _burn(_from, _amount); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import { ReentrancyGuard } from "@openzeppelin/contracts-0.6/utils/ReentrancyGuard.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/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Context.sol"; import "@openzeppelin/contracts-0.6/access/Ownable.sol"; import "./interfaces/IRewarder.sol"; /** * @title ConvexMasterChef * @author ConvexFinance * @notice Masterchef can distribute rewards to n pools over x time * @dev There are some caveats with this usage - once it's turned on it can't be turned off, * and thus it can over complicate the distribution of these rewards. * To kick things off, just transfer CVX here and add some pools - rewards will be distributed * pro-rata based on the allocation points in each pool vs the total alloc. */ contract ConvexMasterChef is Ownable, ReentrancyGuard { using SafeMath for uint256; using SafeERC20 for IERC20; // Info of each user. struct UserInfo { uint256 amount; // How many LP tokens the user has provided. uint256 rewardDebt; // Reward debt. See explanation below. // // We do some fancy math here. Basically, any point in time, the amount of CVXs // entitled to a user but is pending to be distributed is: // // pending reward = (user.amount * pool.accCvxPerShare) - user.rewardDebt // // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens: // 1. The pool's `accCvxPerShare` (and `lastRewardBlock`) gets updated. // 2. User receives the pending reward sent to his/her address. // 3. User's `amount` gets updated. // 4. User's `rewardDebt` gets updated. } // Info of each pool. struct PoolInfo { IERC20 lpToken; // Address of LP token contract. uint256 allocPoint; // How many allocation points assigned to this pool. CVX to distribute per block. uint256 lastRewardBlock; // Last block number that CVXs distribution occurs. uint256 accCvxPerShare; // Accumulated CVXs per share, times 1e12. See below. IRewarder rewarder; } //cvx IERC20 public immutable cvx; // CVX tokens created per block. uint256 public immutable rewardPerBlock; // Bonus muliplier for early cvx makers. uint256 public constant BONUS_MULTIPLIER = 2; // Info of each pool. PoolInfo[] public poolInfo; mapping(address => bool) public isAddedPool; // Info of each user that stakes LP tokens. mapping(uint256 => mapping(address => UserInfo)) public userInfo; // Total allocation points. Must be the sum of all allocation points in all pools. uint256 public totalAllocPoint = 0; // The block number when CVX mining starts. uint256 public immutable startBlock; uint256 public immutable endBlock; // Events event Deposit(address indexed user, uint256 indexed pid, uint256 amount); event Withdraw(address indexed user, uint256 indexed pid, uint256 amount); event RewardPaid(address indexed user, uint256 indexed pid, uint256 amount); event EmergencyWithdraw( address indexed user, uint256 indexed pid, uint256 amount ); constructor( IERC20 _cvx, uint256 _rewardPerBlock, uint256 _startBlock, uint256 _endBlock ) public { cvx = _cvx; isAddedPool[address(_cvx)] = true; rewardPerBlock = _rewardPerBlock; startBlock = _startBlock; endBlock = _endBlock; } function poolLength() external view returns (uint256) { return poolInfo.length; } // Add a new lp to the pool. Can only be called by the owner. // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do. function add( uint256 _allocPoint, IERC20 _lpToken, IRewarder _rewarder ) public onlyOwner nonReentrant { require(poolInfo.length < 32, "max pools"); require(!isAddedPool[address(_lpToken)], "add: Duplicated LP Token"); isAddedPool[address(_lpToken)] = true; massUpdatePools(); uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock; totalAllocPoint = totalAllocPoint.add(_allocPoint); poolInfo.push( PoolInfo({ lpToken: _lpToken, allocPoint: _allocPoint, lastRewardBlock: lastRewardBlock, accCvxPerShare: 0, rewarder: _rewarder }) ); } // Update the given pool's CVX allocation point. Can only be called by the owner. function set( uint256 _pid, uint256 _allocPoint, IRewarder _rewarder, bool _updateRewarder ) public onlyOwner nonReentrant { massUpdatePools(); totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add( _allocPoint ); require(totalAllocPoint > 0, "!alloc"); poolInfo[_pid].allocPoint = _allocPoint; if(_updateRewarder){ poolInfo[_pid].rewarder = _rewarder; } } // Return reward multiplier over the given _from to _to block. function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) { uint256 clampedTo = _to > endBlock ? endBlock : _to; uint256 clampedFrom = _from > endBlock ? endBlock : _from; return clampedTo.sub(clampedFrom); } // View function to see pending CVXs on frontend. function pendingCvx(uint256 _pid, address _user) external view returns (uint256) { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][_user]; uint256 accCvxPerShare = pool.accCvxPerShare; uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (block.number > pool.lastRewardBlock && lpSupply != 0) { uint256 multiplier = getMultiplier( pool.lastRewardBlock, block.number ); uint256 cvxReward = multiplier .mul(rewardPerBlock) .mul(pool.allocPoint) .div(totalAllocPoint); accCvxPerShare = accCvxPerShare.add( cvxReward.mul(1e12).div(lpSupply) ); } return user.amount.mul(accCvxPerShare).div(1e12).sub(user.rewardDebt); } // Update reward vairables for all pools. Be careful of gas spending! function massUpdatePools() public { uint256 length = poolInfo.length; for (uint256 pid = 0; pid < length; ++pid) { updatePool(pid); } } // Update reward variables of the given pool to be up-to-date. function updatePool(uint256 _pid) public { PoolInfo storage pool = poolInfo[_pid]; if (block.number <= pool.lastRewardBlock) { return; } uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (lpSupply == 0) { pool.lastRewardBlock = block.number; return; } uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number); uint256 cvxReward = multiplier .mul(rewardPerBlock) .mul(pool.allocPoint) .div(totalAllocPoint); //cvx.mint(address(this), cvxReward); pool.accCvxPerShare = pool.accCvxPerShare.add( cvxReward.mul(1e12).div(lpSupply) ); pool.lastRewardBlock = block.number; } // Deposit LP tokens to MasterChef for CVX allocation. function deposit(uint256 _pid, uint256 _amount) public nonReentrant { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; updatePool(_pid); if (user.amount > 0) { uint256 pending = user .amount .mul(pool.accCvxPerShare) .div(1e12) .sub(user.rewardDebt); safeRewardTransfer(msg.sender, pending); } pool.lpToken.safeTransferFrom( address(msg.sender), address(this), _amount ); user.amount = user.amount.add(_amount); user.rewardDebt = user.amount.mul(pool.accCvxPerShare).div(1e12); //extra rewards IRewarder _rewarder = pool.rewarder; if (address(_rewarder) != address(0)) { _rewarder.onReward(_pid, msg.sender, msg.sender, 0, user.amount); } emit Deposit(msg.sender, _pid, _amount); } // Withdraw LP tokens from MasterChef. function withdraw(uint256 _pid, uint256 _amount) public nonReentrant { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; require(user.amount >= _amount, "withdraw: not good"); updatePool(_pid); uint256 pending = user.amount.mul(pool.accCvxPerShare).div(1e12).sub( user.rewardDebt ); safeRewardTransfer(msg.sender, pending); user.amount = user.amount.sub(_amount); user.rewardDebt = user.amount.mul(pool.accCvxPerShare).div(1e12); pool.lpToken.safeTransfer(address(msg.sender), _amount); //extra rewards IRewarder _rewarder = pool.rewarder; if (address(_rewarder) != address(0)) { _rewarder.onReward(_pid, msg.sender, msg.sender, pending, user.amount); } emit RewardPaid(msg.sender, _pid, pending); emit Withdraw(msg.sender, _pid, _amount); } function claim(uint256 _pid, address _account) external nonReentrant { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][_account]; updatePool(_pid); uint256 pending = user.amount.mul(pool.accCvxPerShare).div(1e12).sub( user.rewardDebt ); safeRewardTransfer(_account, pending); user.rewardDebt = user.amount.mul(pool.accCvxPerShare).div(1e12); //extra rewards IRewarder _rewarder = pool.rewarder; if (address(_rewarder) != address(0)) { _rewarder.onReward(_pid, _account, _account, pending, user.amount); } emit RewardPaid(_account, _pid, pending); } // Withdraw without caring about rewards. EMERGENCY ONLY. function emergencyWithdraw(uint256 _pid) public nonReentrant { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; pool.lpToken.safeTransfer(address(msg.sender), user.amount); emit EmergencyWithdraw(msg.sender, _pid, user.amount); user.amount = 0; user.rewardDebt = 0; //extra rewards IRewarder _rewarder = pool.rewarder; if (address(_rewarder) != address(0)) { _rewarder.onReward(_pid, msg.sender, msg.sender, 0, 0); } } // Safe cvx transfer function, just in case if rounding error causes pool to not have enough CVXs. function safeRewardTransfer(address _to, uint256 _amount) internal { uint256 cvxBal = cvx.balanceOf(address(this)); if (_amount > cvxBal) { cvx.safeTransfer(_to, cvxBal); } else { cvx.safeTransfer(_to, _amount); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title CrvDepositor * @author ConvexFinance * @notice This is the entry point for CRV > cvxCRV wrapping. It accepts CRV, sends to 'staker' * for depositing into Curves VotingEscrow, and then mints cvxCRV at 1:1 via the 'minter' (cCrv) minus * the lockIncentive (initially 1%) which is used to basically compensate users who call the `lock` function on Curves * system (larger depositors would likely want to lock). */ contract CrvDepositor{ using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public immutable crvBpt; address public immutable escrow; uint256 private constant MAXTIME = 1 * 364 * 86400; uint256 private constant WEEK = 7 * 86400; uint256 public lockIncentive = 10; //incentive to users who spend gas to lock crvBpt uint256 public constant FEE_DENOMINATOR = 10000; address public feeManager; address public daoOperator; address public immutable staker; address public immutable minter; uint256 public incentiveCrv = 0; uint256 public unlockTime; bool public cooldown; /** * @param _staker CVX VoterProxy (0x989AEb4d175e16225E39E87d0D97A3360524AD80) * @param _minter cvxCRV token (0x62B9c7356A2Dc64a1969e19C23e4f579F9810Aa7) * @param _crvBpt crvBPT for veCRV deposits * @param _escrow CRV VotingEscrow (0x5f3b5DfEb7B28CDbD7FAba78963EE202a494e2A2) */ constructor( address _staker, address _minter, address _crvBpt, address _escrow, address _daoOperator ) public { staker = _staker; minter = _minter; crvBpt = _crvBpt; escrow = _escrow; feeManager = msg.sender; daoOperator = _daoOperator; } function setFeeManager(address _feeManager) external { require(msg.sender == feeManager, "!auth"); feeManager = _feeManager; } function setDaoOperator(address _daoOperator) external { require(msg.sender == daoOperator, "!auth"); daoOperator = _daoOperator; } function setFees(uint256 _lockIncentive) external{ require(msg.sender==feeManager, "!auth"); if(_lockIncentive >= 0 && _lockIncentive <= 30){ lockIncentive = _lockIncentive; } } function setCooldown(bool _cooldown) external { require(msg.sender == daoOperator, "!auth"); cooldown = _cooldown; } /** * @notice Called once to deposit the balance of CRV in this contract to the VotingEscrow */ function initialLock() external{ require(!cooldown, "cooldown"); require(msg.sender==feeManager, "!auth"); uint256 vecrv = IERC20(escrow).balanceOf(staker); if(vecrv == 0){ uint256 unlockAt = block.timestamp + MAXTIME; uint256 unlockInWeeks = (unlockAt/WEEK)*WEEK; //release old lock if exists IStaker(staker).release(); //create new lock uint256 crvBalanceStaker = IERC20(crvBpt).balanceOf(staker); IStaker(staker).createLock(crvBalanceStaker, unlockAt); unlockTime = unlockInWeeks; } } //lock curve function _lockCurve() internal { if(cooldown) { return; } uint256 crvBalance = IERC20(crvBpt).balanceOf(address(this)); if(crvBalance > 0){ IERC20(crvBpt).safeTransfer(staker, crvBalance); } //increase ammount uint256 crvBalanceStaker = IERC20(crvBpt).balanceOf(staker); if(crvBalanceStaker == 0){ return; } //increase amount IStaker(staker).increaseAmount(crvBalanceStaker); uint256 unlockAt = block.timestamp + MAXTIME; uint256 unlockInWeeks = (unlockAt/WEEK)*WEEK; //increase time too if over 1 week buffer if(unlockInWeeks.sub(unlockTime) >= WEEK){ IStaker(staker).increaseTime(unlockAt); unlockTime = unlockInWeeks; } } /** * @notice Locks the balance of CRV, and gives out an incentive to the caller */ function lockCurve() external { require(!cooldown, "cooldown"); _lockCurve(); //mint incentives if(incentiveCrv > 0){ ITokenMinter(minter).mint(msg.sender,incentiveCrv); incentiveCrv = 0; } } /** * @notice Deposit crvBpt for cvxCrv on behalf of another user * @dev See depositFor(address, uint256, bool, address) */ function deposit(uint256 _amount, bool _lock, address _stakeAddress) public { depositFor(msg.sender, _amount, _lock, _stakeAddress); } /** * @notice Deposit crvBpt for cvxCrv * @dev Can lock immediately or defer locking to someone else by paying a fee. * while users can choose to lock or defer, this is mostly in place so that * the cvx reward contract isnt costly to claim rewards. * @param _amount Units of CRV to deposit * @param _lock Lock now? or pay ~1% to the locker * @param _stakeAddress Stake in cvxCrv staking? */ function depositFor(address to, uint256 _amount, bool _lock, address _stakeAddress) public { require(_amount > 0,"!>0"); require(!cooldown, "cooldown"); if(_lock){ //lock immediately, transfer directly to staker to skip an erc20 transfer IERC20(crvBpt).safeTransferFrom(msg.sender, staker, _amount); _lockCurve(); if(incentiveCrv > 0){ //add the incentive tokens here so they can be staked together _amount = _amount.add(incentiveCrv); incentiveCrv = 0; } }else{ //move tokens here IERC20(crvBpt).safeTransferFrom(msg.sender, address(this), _amount); //defer lock cost to another user uint256 callIncentive = _amount.mul(lockIncentive).div(FEE_DENOMINATOR); _amount = _amount.sub(callIncentive); //add to a pool for lock caller incentiveCrv = incentiveCrv.add(callIncentive); } bool depositOnly = _stakeAddress == address(0); if(depositOnly){ //mint for to ITokenMinter(minter).mint(to,_amount); }else{ //mint here ITokenMinter(minter).mint(address(this),_amount); //stake for to IERC20(minter).safeApprove(_stakeAddress,0); IERC20(minter).safeApprove(_stakeAddress,_amount); IRewards(_stakeAddress).stakeFor(to,_amount); } } function deposit(uint256 _amount, bool _lock) external { deposit(_amount,_lock,address(0)); } function depositAll(bool _lock, address _stakeAddress) external{ uint256 crvBal = IERC20(crvBpt).balanceOf(msg.sender); deposit(crvBal,_lock,_stakeAddress); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/ERC20.sol"; /** * @title DepositToken * @author ConvexFinance * @notice Simply creates a token that can be minted and burned from the operator */ contract DepositToken is ERC20 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public operator; /** * @param _operator Booster * @param _lptoken Underlying LP token for deposits * @param _namePostfix Postfixes lpToken name * @param _symbolPrefix Prefixed lpToken symbol */ constructor( address _operator, address _lptoken, string memory _namePostfix, string memory _symbolPrefix ) public ERC20( string( abi.encodePacked(ERC20(_lptoken).name(), _namePostfix) ), string(abi.encodePacked(_symbolPrefix, ERC20(_lptoken).symbol())) ) { operator = _operator; } function mint(address _to, uint256 _amount) external { require(msg.sender == operator, "!authorized"); _mint(_to, _amount); } function burn(address _from, uint256 _amount) external { require(msg.sender == operator, "!authorized"); _burn(_from, _amount); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; interface ICurveGauge { function deposit(uint256) external; function balanceOf(address) external view returns (uint256); function withdraw(uint256) external; function claim_rewards() external; function reward_tokens(uint256) external view returns(address);//v2 function rewarded_token() external view returns(address);//v1 function lp_token() external view returns(address); } interface ICurveVoteEscrow { function create_lock(uint256, uint256) external; function increase_amount(uint256) external; function increase_unlock_time(uint256) external; function withdraw() external; function smart_wallet_checker() external view returns (address); function commit_smart_wallet_checker(address) external; function apply_smart_wallet_checker() external; } interface IWalletChecker { function check(address) external view returns (bool); function approveWallet(address) external; function dao() external view returns (address); } 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; } interface IStaker{ function deposit(address, address) external returns (bool); function withdraw(address) external returns (uint256); function withdraw(address, address, uint256) external returns (bool); function withdrawAll(address, address) external returns (bool); function createLock(uint256, uint256) external returns(bool); function increaseAmount(uint256) external returns(bool); function increaseTime(uint256) external returns(bool); function release() external returns(bool); function claimCrv(address) external returns (uint256); function claimRewards(address) external returns(bool); function claimFees(address,address) external returns (uint256); function setStashAccess(address, bool) external returns (bool); function vote(uint256,address,bool) external returns(bool); function voteGaugeWeight(address,uint256) external returns(bool); function balanceOfPool(address) external view returns (uint256); function operator() external view returns (address); function execute(address _to, uint256 _value, bytes calldata _data) external returns (bool, bytes memory); function setVote(bytes32 hash, bool valid) external; function migrate(address to) external; } interface IRewards{ 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(uint256) external; function notifyRewardAmount(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); } interface IStash{ function stashRewards() external returns (bool); function processStash() external returns (bool); function claimRewards() external returns (bool); function initialize(uint256 _pid, address _operator, address _staker, address _gauge, address _rewardFactory) external; function setExtraReward(address) external; } interface IFeeDistributor { function claimToken(address user, address token) external returns (uint256); function claimTokens(address user, address[] calldata tokens) external returns (uint256[] memory); function getTokenTimeCursor(address token) external view returns (uint256); } interface ITokenMinter{ function mint(address,uint256) external; function burn(address,uint256) 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) 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); function setImplementation(address, address, address) external; } 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; function shutdownSystem() external; function setUsedAddress(address[] memory) external; } interface IVestedEscrow{ function fund(address[] calldata _recipient, uint256[] calldata _amount) external returns(bool); } interface IRewardDeposit { function addReward(address, uint256) external; }
// 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 IGaugeController { function get_gauge_weight(address _gauge) external view returns(uint256); function vote_user_slopes(address,address) external view returns(uint256,uint256,uint256);//slope,power,end function vote_for_gauge_weights(address,uint256) external; function add_gauge(address,int128,uint256) external; function gauges(uint256) external view returns(address); function checkpoint_gauge(address) external; function n_gauges() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; interface IProxyFactory { function clone(address _target) external returns(address); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; interface IRewarder { using SafeERC20 for IERC20; function onReward(uint256 pid, address user, address recipient, uint256 sushiAmount, uint256 newLpAmount) external; function pendingTokens(uint256 pid, address user, uint256 sushiAmount) external view returns (IERC20[] memory, uint256[] memory); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; interface IRewardHook { function onRewardClaim() 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; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; /** * @title PoolManagerLite * @author ConvexFinance * @notice Pool Manager Lite * @dev Add pools to the Booster contract */ contract PoolManagerLite { using SafeMath for uint256; address public immutable booster; address public operator; bool public isShutdown; constructor(address _booster) public { booster = _booster; operator = msg.sender; } function setOperator(address _operator) external { require(msg.sender == operator, "!auth"); operator = _operator; } function addPool(address _gauge) external returns (bool) { return _addPool(_gauge, 3); } function addPool(address _gauge, uint256 _stashVersion) external returns (bool) { return _addPool(_gauge, _stashVersion); } function _addPool(address _gauge, uint256 _stashVersion) internal returns (bool) { require(msg.sender == operator, "!auth"); require(!IPools(booster).gaugeMap(_gauge), "already registered gauge"); require(!isShutdown, "shutdown"); address lptoken = ICurveGauge(_gauge).lp_token(); require(!IPools(booster).gaugeMap(lptoken), "already registered lptoken"); return IPools(booster).addPool(lptoken, _gauge, _stashVersion); } function shutdownPool(uint256 _pid) external returns (bool) { require(msg.sender == operator, "!auth"); // get pool info (address lptoken, address depositToken, , , , bool isshutdown) = IPools(booster).poolInfo(_pid); require(!isshutdown, "already shutdown"); // shutdown pool and get before and after amounts uint256 beforeBalance = IERC20(lptoken).balanceOf(booster); IPools(booster).shutdownPool(_pid); uint256 afterBalance = IERC20(lptoken).balanceOf(booster); // check that proper amount of tokens were withdrawn(will also fail if already shutdown) require(afterBalance.sub(beforeBalance) >= IERC20(depositToken).totalSupply(), "supply mismatch"); return true; } //shutdown pool management and disallow new pools. change is immutable function shutdownSystem() external { require(msg.sender == operator, "!auth"); isShutdown = true; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; /** * @title PoolManagerProxy * @author ConvexFinance * @notice Immutable pool manager proxy to enforce that there are no multiple pools of the same gauge * as well as new lp tokens are not gauge tokens * @dev Called by PoolManagerShutdownProxy */ contract PoolManagerProxy{ address public immutable pools; address public owner; address public operator; /** * @param _pools Contract can call addPool currently Booster * @param _owner Contract owner currently multisig */ constructor( address _pools, address _owner ) public { pools = _pools; owner = _owner; operator = msg.sender; } modifier onlyOwner() { require(owner == msg.sender, "!owner"); _; } modifier onlyOperator() { require(operator == msg.sender, "!op"); _; } //set owner - only OWNER function setOwner(address _owner) external onlyOwner{ owner = _owner; } //set operator - only OWNER function setOperator(address _operator) external onlyOwner{ operator = _operator; } // sealed to be immutable // function revertControl() external{ // } //shutdown a pool - only OPERATOR function shutdownPool(uint256 _pid) external onlyOperator returns(bool){ return IPools(pools).shutdownPool(_pid); } /** * @notice Add pool to system * @dev Only callable by the operator looks up the gauge from the gaugeMap in Booster to ensure * it hasn't already been added */ function addPool(address _lptoken, address _gauge, uint256 _stashVersion) external onlyOperator returns(bool){ require(_gauge != address(0),"gauge is 0"); require(_lptoken != address(0),"lp token is 0"); //check if a pool with this gauge already exists bool gaugeExists = IPools(pools).gaugeMap(_gauge); require(!gaugeExists, "already registered gauge"); //must also check that the lp token is not a registered gauge //because curve gauges are tokenized gaugeExists = IPools(pools).gaugeMap(_lptoken); require(!gaugeExists, "already registered lptoken"); return IPools(pools).addPool(_lptoken,_gauge,_stashVersion); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./interfaces/IGaugeController.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; /** * @title PoolManagerSecondaryProxy * @author ConvexFinance * @notice Basically a PoolManager that has a better shutdown and calls addPool on PoolManagerProxy. * Immutable pool manager proxy to enforce that when a pool is shutdown, the proper number * of lp tokens are returned to the booster contract for withdrawal. */ contract PoolManagerSecondaryProxy{ using SafeMath for uint256; address public immutable gaugeController; address public immutable pools; address public immutable booster; address public owner; address public operator; bool public isShutdown; mapping(address => bool) public usedMap; /** * @param _gaugeController Curve Gauge controller (0x2F50D538606Fa9EDD2B11E2446BEb18C9D5846bB) * @param _pools PoolManagerProxy (0x5F47010F230cE1568BeA53a06eBAF528D05c5c1B) * @param _booster Booster * @param _owner Executoor */ constructor( address _gaugeController, address _pools, address _booster, address _owner ) public { gaugeController = _gaugeController; pools = _pools; booster = _booster; owner = _owner; operator = msg.sender; } modifier onlyOwner() { require(owner == msg.sender, "!owner"); _; } modifier onlyOperator() { require(operator == msg.sender, "!op"); _; } //set owner - only OWNER function setOwner(address _owner) external onlyOwner{ owner = _owner; } //set operator - only OWNER function setOperator(address _operator) external onlyOwner{ operator = _operator; } //manual set an address to used state function setUsedAddress(address[] memory usedList) external onlyOwner{ for(uint i=0; i < usedList.length; i++){ usedMap[usedList[i]] = true; } } //shutdown pool management and disallow new pools. change is immutable function shutdownSystem() external onlyOwner{ isShutdown = true; } /** * @notice Shutdown a pool - only OPERATOR * @dev Shutdowns a pool and ensures all the LP tokens are properly * withdrawn to the Booster contract */ function shutdownPool(uint256 _pid) external onlyOperator returns(bool){ //get pool info (address lptoken, address depositToken,,,,bool isshutdown) = IPools(booster).poolInfo(_pid); require(!isshutdown, "already shutdown"); //shutdown pool and get before and after amounts uint256 beforeBalance = IERC20(lptoken).balanceOf(booster); IPools(pools).shutdownPool(_pid); uint256 afterBalance = IERC20(lptoken).balanceOf(booster); //check that proper amount of tokens were withdrawn(will also fail if already shutdown) require( afterBalance.sub(beforeBalance) >= IERC20(depositToken).totalSupply(), "supply mismatch"); return true; } //add a new pool if it has weight on the gauge controller - only OPERATOR function addPool(address _lptoken, address _gauge, uint256 _stashVersion) external onlyOperator returns(bool){ //check that the pool as weight uint256 weight = IGaugeController(gaugeController).get_gauge_weight(_gauge); require(weight > 0, "must have weight"); return _addPool(_lptoken, _gauge, _stashVersion); } //force add a new pool, but only for addresses that have never been used before - only OPERATOR function forceAddPool(address _lptoken, address _gauge, uint256 _stashVersion) external onlyOperator returns(bool){ require(!usedMap[_lptoken] && !usedMap[_gauge], "cant force used pool"); return _addPool(_lptoken, _gauge, _stashVersion); } //internal add pool and updated used list function _addPool(address _lptoken, address _gauge, uint256 _stashVersion) internal returns(bool){ require(!isShutdown, "shutdown"); usedMap[_lptoken] = true; usedMap[_gauge] = true; return IPools(pools).addPool(_lptoken,_gauge,_stashVersion); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./interfaces/IGaugeController.sol"; /** * @title PoolManagerV3 * @author ConvexFinance * @notice Pool Manager v3 * PoolManagerV3 calls addPool on PoolManagerShutdownProxy which calls * addPool on PoolManagerProxy which calls addPool on Booster. * PoolManager-ception * @dev Add pools to the Booster contract */ contract PoolManagerV3{ address public immutable pools; address public immutable gaugeController; address public operator; bool public protectAddPool; /** * @param _pools Currently PoolManagerSecondaryProxy * @param _gaugeController Curve gauge controller e.g: (0x2F50D538606Fa9EDD2B11E2446BEb18C9D5846bB) * @param _operator Convex multisig */ constructor( address _pools, address _gaugeController, address _operator ) public { pools = _pools; gaugeController = _gaugeController; operator = _operator; protectAddPool = true; } function setOperator(address _operator) external { require(msg.sender == operator, "!auth"); operator = _operator; } /** * @notice set if addPool is only callable by operator */ function setProtectPool(bool _protectAddPool) external { require(msg.sender == operator, "!auth"); protectAddPool = _protectAddPool; } /** * @notice Add a new curve pool to the system. (default stash to v3) */ function addPool(address _gauge) external returns(bool){ _addPool(_gauge,3); return true; } /** * @notice Add a new curve pool to the system */ function addPool(address _gauge, uint256 _stashVersion) external returns(bool){ _addPool(_gauge,_stashVersion); return true; } function _addPool(address _gauge, uint256 _stashVersion) internal{ if(protectAddPool) { require(msg.sender == operator, "!auth"); } //get lp token from gauge address lptoken = ICurveGauge(_gauge).lp_token(); //gauge/lptoken address checks will happen in the next call IPools(pools).addPool(lptoken,_gauge,_stashVersion); } function forceAddPool(address _lptoken, address _gauge, uint256 _stashVersion) external returns(bool){ require(msg.sender==operator, "!auth"); //force add pool without weight checks (can only be used on new token and gauge addresses) return IPools(pools).forceAddPool(_lptoken, _gauge, _stashVersion); } function shutdownPool(uint256 _pid) external returns(bool){ require(msg.sender==operator, "!auth"); IPools(pools).shutdownPool(_pid); return true; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; /** * @title PoolManagerV4 * @author ConvexFinance -> AuraFinance * @notice Pool Manager v4 * - Changes: remove forceAddPool */ contract PoolManagerV4{ address public immutable pools; address public operator; bool public protectAddPool; /** * @param _pools Currently PoolManagerSecondaryProxy * @param _operator Convex multisig */ constructor( address _pools, address _operator ) public { pools = _pools; operator = _operator; protectAddPool = true; } function setOperator(address _operator) external { require(msg.sender == operator, "!auth"); operator = _operator; } /** * @notice set if addPool is only callable by operator */ function setProtectPool(bool _protectAddPool) external { require(msg.sender == operator, "!auth"); protectAddPool = _protectAddPool; } /** * @notice Add a new curve pool to the system. (default stash to v3) */ function addPool(address _gauge) external returns(bool){ _addPool(_gauge,3); return true; } function _addPool(address _gauge, uint256 _stashVersion) internal{ if(protectAddPool) { require(msg.sender == operator, "!auth"); } //get lp token from gauge address lptoken = ICurveGauge(_gauge).lp_token(); //gauge/lptoken address checks will happen in the next call IPools(pools).addPool(lptoken,_gauge,_stashVersion); } function shutdownPool(uint256 _pid) external returns(bool){ require(msg.sender==operator, "!auth"); IPools(pools).shutdownPool(_pid); return true; } //shutdown pool management and disallow new pools. change is immutable function shutdownSystem() external { require(msg.sender == operator, "!auth"); IPools(pools).shutdownSystem(); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./BaseRewardPool4626.sol"; import "./VirtualBalanceRewardPool.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title RewardFactory * @author ConvexFinance * @notice Used to deploy reward pools when a new pool is added to the Booster * contract. This contract deploys two types of reward pools: * - BaseRewardPool handles CRV rewards for guages * - VirtualBalanceRewardPool for extra rewards */ contract RewardFactory { using Address for address; address public immutable operator; address public immutable crv; mapping (address => bool) private rewardAccess; mapping(address => uint256[]) public rewardActiveList; event RewardPoolCreated(address rewardPool, uint256 _pid, address depositToken); event TokenRewardPoolCreated(address rewardPool, address token, address mainRewards, address operator); event AccessChanged(address stash, bool hasAccess); /** * @param _operator Contract operator is Booster * @param _crv CRV token address */ constructor(address _operator, address _crv) public { operator = _operator; crv = _crv; } //stash contracts need access to create new Virtual balance pools for extra gauge incentives(ex. snx) function setAccess(address _stash, bool _status) external{ require(msg.sender == operator, "!auth"); rewardAccess[_stash] = _status; emit AccessChanged(_stash, _status); } /** * @notice Create a Managed Reward Pool to handle distribution of all crv mined in a pool */ function CreateCrvRewards(uint256 _pid, address _depositToken, address _lptoken) external returns (address) { require(msg.sender == operator, "!auth"); //operator = booster(deposit) contract so that new crv can be added and distributed //reward manager = this factory so that extra incentive tokens(ex. snx) can be linked to the main managed reward pool BaseRewardPool4626 rewardPool = new BaseRewardPool4626(_pid,_depositToken,crv,operator, address(this), _lptoken); emit RewardPoolCreated(address(rewardPool), _pid, _depositToken); return address(rewardPool); } /** * @notice Create a virtual balance reward pool that mimics the balance of a pool's main reward contract * used for extra incentive tokens(ex. snx) as well as vecrv fees */ function CreateTokenRewards(address _token, address _mainRewards, address _operator) external returns (address) { require(msg.sender == operator || rewardAccess[msg.sender] == true, "!auth"); //create new pool, use main pool for balance lookup VirtualBalanceRewardPool rewardPool = new VirtualBalanceRewardPool(_mainRewards,_token,_operator); address rAddress = address(rewardPool); //add the new pool to main pool's list of extra rewards, assuming this factory has "reward manager" role IRewards(_mainRewards).addExtraReward(rAddress); emit TokenRewardPoolCreated(rAddress, _token, _mainRewards, _operator); //return new pool's address return rAddress; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; /** * @title RewardHook * @author ConvexFinance * @notice Example Reward hook for stash * @dev ExtraRewardStash contracts call this hook if it is set. This hook * can be used to pull rewards during a claim. For example pulling * rewards from master chef. */ contract RewardHook{ using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public immutable stash; address public immutable rewardToken; /** * @param _stash Address of the reward stash * @param _reward Reward token */ constructor(address _stash, address _reward) public { stash = _stash; rewardToken = _reward; } /** * @dev Called when claimRewards is called in ExtraRewardStash can implement * logic to pull rewards i.e from a master chef contract. This is just an example * and assumes rewards are just sent directly to this hook contract */ function onRewardClaim() external{ //get balance uint256 bal = IERC20(rewardToken).balanceOf(address(this)); //send IERC20(rewardToken).safeTransfer(stash,bal); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./interfaces/IProxyFactory.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title StashFactoryV2 * @author ConvexFinance * @notice Factory to deploy reward stash contracts that handle extra rewards */ contract StashFactoryV2 { using Address for address; bytes4 private constant rewarded_token = 0x16fa50b1; //rewarded_token() bytes4 private constant reward_tokens = 0x54c49fe9; //reward_tokens(uint256) bytes4 private constant rewards_receiver = 0x01ddabf1; //rewards_receiver(address) address public immutable operator; address public immutable rewardFactory; address public immutable proxyFactory; address public v1Implementation; address public v2Implementation; address public v3Implementation; event StashCreated(address stash, uint256 stashVersion); /** * @param _operator Operator is Booster * @param _rewardFactory Factory that creates reward contract that are * VirtualBalanceRewardPool's used for extra pool rewards * @param _proxyFactory Deploy proxies with stash implementation */ constructor(address _operator, address _rewardFactory, address _proxyFactory) public { operator = _operator; rewardFactory = _rewardFactory; proxyFactory = _proxyFactory; } function setImplementation(address _v1, address _v2, address _v3) external{ require(msg.sender == IDeposit(operator).owner(),"!auth"); v1Implementation = _v1; v2Implementation = _v2; v3Implementation = _v3; } //Create a stash contract for the given gauge. //function calls are different depending on the version of curve gauges so determine which stash type is needed function CreateStash(uint256 _pid, address _gauge, address _staker, uint256 _stashVersion) external returns(address){ require(msg.sender == operator, "!authorized"); require(_gauge != address(0), "!gauge"); if(_stashVersion == uint256(3) && IsV3(_gauge)){ //v3 require(v3Implementation!=address(0),"0 impl"); address stash = IProxyFactory(proxyFactory).clone(v3Implementation); IStash(stash).initialize(_pid,operator,_staker,_gauge,rewardFactory); emit StashCreated(stash, _stashVersion); return stash; }else if(_stashVersion == uint256(1) && IsV1(_gauge)){ //v1 require(v1Implementation!=address(0),"0 impl"); address stash = IProxyFactory(proxyFactory).clone(v1Implementation); IStash(stash).initialize(_pid,operator,_staker,_gauge,rewardFactory); emit StashCreated(stash, _stashVersion); return stash; }else if(_stashVersion == uint256(2) && !IsV3(_gauge) && IsV2(_gauge)){ //v2 require(v2Implementation!=address(0),"0 impl"); address stash = IProxyFactory(proxyFactory).clone(v2Implementation); IStash(stash).initialize(_pid,operator,_staker,_gauge,rewardFactory); emit StashCreated(stash, _stashVersion); return stash; } bool isV1 = IsV1(_gauge); bool isV2 = IsV2(_gauge); bool isV3 = IsV3(_gauge); require(!isV1 && !isV2 && !isV3,"stash version mismatch"); return address(0); } function IsV1(address _gauge) private returns(bool){ bytes memory data = abi.encode(rewarded_token); (bool success,) = _gauge.call(data); return success; } function IsV2(address _gauge) private returns(bool){ bytes memory data = abi.encodeWithSelector(reward_tokens,uint256(0)); (bool success,) = _gauge.call(data); return success; } function IsV3(address _gauge) private returns(bool){ bytes memory data = abi.encodeWithSelector(rewards_receiver,address(0)); (bool success,) = _gauge.call(data); return success; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-upgradeable-0.6/utils/ReentrancyGuardUpgradeable.sol"; interface IERC20Metadata { function name() external view returns (string memory); function symbol() external view returns (string memory); } contract StashToken is ReentrancyGuardUpgradeable { using SafeERC20 for IERC20; using SafeMath for uint256; uint256 public constant MAX_TOTAL_SUPPLY = 1e38; address public immutable stash; address public operator; address public rewardPool; address public baseToken; bool public isValid; bool public isImplementation; uint256 internal _totalSupply; constructor(address _stash) public { stash = _stash; isImplementation = true; } function init( address _operator, address _rewardPool, address _baseToken ) external initializer { require(!isImplementation, "isImplementation"); __ReentrancyGuard_init(); operator = _operator; rewardPool = _rewardPool; baseToken = _baseToken; isValid = true; } function name() external view returns (string memory) { return string(abi.encodePacked("Stash Token ", IERC20Metadata(baseToken).name())); } function symbol() external view returns (string memory) { return string(abi.encodePacked("STASH-", IERC20Metadata(baseToken).symbol())); } function setIsValid(bool _isValid) external { require(msg.sender == IDeposit(operator).owner(), "!owner"); isValid = _isValid; } function totalSupply() public view returns (uint256) { return _totalSupply; } function mint(uint256 _amount) external nonReentrant { require(msg.sender == stash, "!stash"); require(_totalSupply.add(_amount) < MAX_TOTAL_SUPPLY, "totalSupply exceeded"); _totalSupply = _totalSupply.add(_amount); IERC20(baseToken).safeTransferFrom(msg.sender, address(this), _amount); } function transfer(address _to, uint256 _amount) public nonReentrant returns (bool) { require(msg.sender == rewardPool, "!rewardPool"); require(_totalSupply >= _amount, "amount>totalSupply"); _totalSupply = _totalSupply.sub(_amount); IERC20(baseToken).safeTransfer(_to, _amount); return true; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "./DepositToken.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title TokenFactory * @author ConvexFinance * @notice Token factory used to create Deposit Tokens. These are the tokenized * pool deposit tokens e.g cvx3crv */ contract TokenFactory { using Address for address; address public immutable operator; string public namePostfix; string public symbolPrefix; event DepositTokenCreated(address token, address lpToken); /** * @param _operator Operator is Booster * @param _namePostfix Postfixes lpToken name * @param _symbolPrefix Prefixed lpToken symbol */ constructor( address _operator, string memory _namePostfix, string memory _symbolPrefix ) public { operator = _operator; namePostfix = _namePostfix; symbolPrefix = _symbolPrefix; } function CreateDepositToken(address _lptoken) external returns(address){ require(msg.sender == operator, "!authorized"); DepositToken dtoken = new DepositToken(operator,_lptoken,namePostfix,symbolPrefix); emit DepositTokenCreated(address(dtoken), _lptoken); return address(dtoken); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: VirtualBalanceRewardPool.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.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/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; abstract contract VirtualBalanceWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IDeposit public immutable deposits; constructor(address deposit_) internal { deposits = IDeposit(deposit_); } function totalSupply() public view returns (uint256) { return deposits.totalSupply(); } function balanceOf(address account) public view returns (uint256) { return deposits.balanceOf(account); } } /** * @title VirtualBalanceRewardPool * @author ConvexFinance * @notice Reward pool used for ExtraRewards in Booster lockFees (3crv) and * Extra reward stashes * @dev The rewards are sent to this contract for distribution to stakers. This * contract does not hold any of the staking tokens it just maintains a virtual * balance of what a user has staked in the staking pool (BaseRewardPool). * For example the Booster sends veCRV fees (3Crv) to a VirtualBalanceRewardPool * which tracks the virtual balance of cxvCRV stakers and distributes their share * of 3Crv rewards */ contract VirtualBalanceRewardPool is VirtualBalanceWrapper { using SafeERC20 for IERC20; IERC20 public immutable rewardToken; uint256 public constant duration = 7 days; address public immutable operator; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; uint256 public queuedRewards = 0; uint256 public currentRewards = 0; uint256 public historicalRewards = 0; uint256 public constant newRewardRatio = 830; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(uint256 => uint256) public epochRewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); /** * @param deposit_ Parent deposit pool e.g cvxCRV staking in BaseRewardPool * @param reward_ The rewards token e.g 3Crv * @param op_ Operator contract (Booster) */ constructor( address deposit_, address reward_, address op_ ) public VirtualBalanceWrapper(deposit_) { rewardToken = IERC20(reward_); operator = op_; } /** * @notice Update rewards earned by this account */ modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return MathUtil.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } /** * @notice Update reward, emit, call linked reward's stake * @dev Callable by the deposits address which is the BaseRewardPool * this updates the virtual balance of this user as this contract doesn't * actually hold any staked tokens it just diributes reward tokens */ function stake(address _account, uint256 amount) external updateReward(_account) { require(msg.sender == address(deposits), "!authorized"); // require(amount > 0, 'VirtualDepositRewardPool: Cannot stake 0'); emit Staked(_account, amount); } /** * @notice Withdraw stake and update reward, emit, call linked reward's stake * @dev See stake */ function withdraw(address _account, uint256 amount) public updateReward(_account) { require(msg.sender == address(deposits), "!authorized"); //require(amount > 0, 'VirtualDepositRewardPool : Cannot withdraw 0'); emit Withdrawn(_account, amount); } /** * @notice Get rewards for this account * @dev This can be called directly but it is usually called by the * BaseRewardPool getReward when the BaseRewardPool loops through * it's extraRewards array calling getReward on all of them */ function getReward(address _account) public updateReward(_account){ uint256 reward = earned(_account); if (reward > 0) { rewards[_account] = 0; rewardToken.safeTransfer(_account, reward); emit RewardPaid(_account, reward); } } function getReward() external{ getReward(msg.sender); } /** * @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 { if (block.timestamp >= periodFinish && queuedRewards > 0) { notifyRewardAmount(queuedRewards); queuedRewards = 0; } } function queueNewRewards(uint256 _rewards) external{ require(msg.sender == operator, "!authorized"); uint256 epoch = block.timestamp.div(duration); epochRewards[epoch] = epochRewards[epoch].add(_rewards); if(epochRewards[epoch] > 1e31) { return; } _rewards = _rewards.add(queuedRewards); if (block.timestamp >= periodFinish) { notifyRewardAmount(_rewards); queuedRewards = 0; return; } //et = now - (finish-duration) uint256 elapsedTime = block.timestamp.sub(periodFinish.sub(duration)); //current at now: rewardRate * elapsedTime uint256 currentAtNow = rewardRate * elapsedTime; uint256 queuedRatio = currentAtNow.mul(1000).div(_rewards); if(queuedRatio < newRewardRatio){ notifyRewardAmount(_rewards); queuedRewards = 0; }else{ queuedRewards = _rewards; } } function notifyRewardAmount(uint256 reward) internal updateReward(address(0)) { historicalRewards = historicalRewards.add(reward); if (block.timestamp >= periodFinish) { rewardRate = reward.div(duration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); reward = reward.add(leftover); rewardRate = reward.div(duration); } currentRewards = reward; lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(duration); emit RewardAdded(reward); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./VirtualBalanceRewardPool.sol"; /** * @title VirtualRewardFacotry * @author Aura Finance */ contract VirtualRewardFactory { function createVirtualReward(address _deposits, address _reward, address _operator) external returns(address) { return address(new VirtualBalanceRewardPool(_deposits, _reward, _operator)); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.sol"; import "@openzeppelin/contracts-0.6/math/SafeMath.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts-0.6/utils/Address.sol"; import "@openzeppelin/contracts-0.6/token/ERC20/SafeERC20.sol"; /** * @title VoterProxy * @author ConvexFinance * @notice VoterProxy whitelisted in the curve SmartWalletWhitelist that * participates in Curve governance. Also handles all deposits since this is * the address that has the voting power. */ contract VoterProxy { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public mintr; address public immutable crv; address public immutable crvBpt; address public immutable escrow; address public gaugeController; address public rewardDeposit; address public withdrawer; address public owner; address public operator; address public depositor; mapping (address => bool) private stashPool; mapping (address => bool) private protectedTokens; mapping (bytes32 => bool) private votes; bytes4 constant internal EIP1271_MAGIC_VALUE = 0x1626ba7e; event VoteSet(bytes32 hash, bool valid); /** * @param _mintr CRV minter * @param _crv CRV Token address * @param _crvBpt CRV:ETH 80-20 BPT Token address * @param _escrow Curve Voting escrow contract * @param _gaugeController Curve Gauge Controller * Controls liquidity gauges and the issuance of coins through the gauges */ constructor( address _mintr, address _crv, address _crvBpt, address _escrow, address _gaugeController ) public { mintr = _mintr; crv = _crv; crvBpt = _crvBpt; escrow = _escrow; gaugeController = _gaugeController; owner = msg.sender; protectedTokens[_crv] = true; protectedTokens[_crvBpt] = true; } function getName() external pure returns (string memory) { return "BalancerVoterProxy"; } function setOwner(address _owner) external { require(msg.sender == owner, "!auth"); owner = _owner; } /** * @notice Allows dao to set the reward withdrawal address * @param _withdrawer Whitelisted withdrawer * @param _rewardDeposit Distributor address */ function setRewardDeposit(address _withdrawer, address _rewardDeposit) external { require(msg.sender == owner, "!auth"); withdrawer = _withdrawer; rewardDeposit = _rewardDeposit; } /** * @notice Allows dao to set the external system config, should it change in the future * @param _gaugeController External gauge controller address * @param _mintr Token minter address for claiming rewards */ function setSystemConfig(address _gaugeController, address _mintr) external returns (bool) { require(msg.sender == owner, "!auth"); gaugeController = _gaugeController; mintr = _mintr; return true; } /** * @notice Set the operator of the VoterProxy * @param _operator Address of the operator (Booster) */ function setOperator(address _operator) external { require(msg.sender == owner, "!auth"); require(operator == address(0) || IDeposit(operator).isShutdown() == true, "needs shutdown"); operator = _operator; } /** * @notice Set the depositor of the VoterProxy * @param _depositor Address of the depositor (CrvDepositor) */ function setDepositor(address _depositor) external { require(msg.sender == owner, "!auth"); depositor = _depositor; } function setStashAccess(address _stash, bool _status) external returns(bool){ require(msg.sender == operator, "!auth"); if(_stash != address(0)){ stashPool[_stash] = _status; } return true; } /** * @notice Save a vote hash so when snapshot.org asks this contract if * a vote signature is valid we are able to check for a valid hash * and return the appropriate response inline with EIP 1721 * @param _hash Hash of vote signature that was sent to snapshot.org * @param _valid Is the hash valid */ function setVote(bytes32 _hash, bool _valid) external { require(msg.sender == operator, "!auth"); votes[_hash] = _valid; emit VoteSet(_hash, _valid); } /** * @notice Verifies that the hash is valid * @dev Snapshot Hub will call this function when a vote is submitted using * snapshot.js on behalf of this contract. Snapshot Hub will call this * function with the hash and the signature of the vote that was cast. * @param _hash Hash of the message that was sent to Snapshot Hub to cast a vote * @return EIP1271 magic value if the signature is value */ function isValidSignature(bytes32 _hash, bytes memory) public view returns (bytes4) { if(votes[_hash]) { return EIP1271_MAGIC_VALUE; } else { return 0xffffffff; } } /** * @notice Deposit tokens into the Curve Gauge * @dev Only can be called by the operator (Booster) once this contract has been * whitelisted by the Curve DAO * @param _token Deposit LP token address * @param _gauge Gauge contract to deposit to */ function deposit(address _token, address _gauge) external returns(bool){ require(msg.sender == operator, "!auth"); if(protectedTokens[_token] == false){ protectedTokens[_token] = true; } if(protectedTokens[_gauge] == false){ protectedTokens[_gauge] = true; } uint256 balance = IERC20(_token).balanceOf(address(this)); if (balance > 0) { IERC20(_token).safeApprove(_gauge, 0); IERC20(_token).safeApprove(_gauge, balance); ICurveGauge(_gauge).deposit(balance); } return true; } /** * @notice Withdraw ERC20 tokens that have been distributed as extra rewards * @dev Tokens shouldn't end up here if they can help it. However, dao can * set a withdrawer that can process these to some ExtraRewardDistribution. */ function withdraw(IERC20 _asset) external returns (uint256 balance) { require(msg.sender == withdrawer, "!auth"); require(protectedTokens[address(_asset)] == false, "protected"); balance = _asset.balanceOf(address(this)); _asset.safeApprove(rewardDeposit, 0); _asset.safeApprove(rewardDeposit, balance); IRewardDeposit(rewardDeposit).addReward(address(_asset), balance); return balance; } /** * @notice Withdraw LP tokens from a gauge * @dev Only callable by the operator * @param _token LP token address * @param _gauge Gauge for this LP token * @param _amount Amount of LP token to withdraw */ function withdraw(address _token, address _gauge, uint256 _amount) public returns(bool){ require(msg.sender == operator, "!auth"); uint256 _balance = IERC20(_token).balanceOf(address(this)); if (_balance < _amount) { _amount = _withdrawSome(_gauge, _amount.sub(_balance)); _amount = _amount.add(_balance); } IERC20(_token).safeTransfer(msg.sender, _amount); return true; } /** * @notice Withdraw all LP tokens from a gauge * @dev Only callable by the operator * @param _token LP token address * @param _gauge Gauge for this LP token */ function withdrawAll(address _token, address _gauge) external returns(bool){ require(msg.sender == operator, "!auth"); uint256 amount = balanceOfPool(_gauge).add(IERC20(_token).balanceOf(address(this))); withdraw(_token, _gauge, amount); return true; } function _withdrawSome(address _gauge, uint256 _amount) internal returns (uint256) { ICurveGauge(_gauge).withdraw(_amount); return _amount; } /** * @notice Lock CRV in Curve's voting escrow contract * @dev Called by the CrvDepositor contract * @param _value Amount of crv to lock * @param _unlockTime Timestamp to unlock (max is 4 years) */ function createLock(uint256 _value, uint256 _unlockTime) external returns(bool){ require(msg.sender == depositor, "!auth"); IERC20(crvBpt).safeApprove(escrow, 0); IERC20(crvBpt).safeApprove(escrow, _value); ICurveVoteEscrow(escrow).create_lock(_value, _unlockTime); return true; } /** * @notice Called by the CrvDepositor to increase amount of locked curve */ function increaseAmount(uint256 _value) external returns(bool){ require(msg.sender == depositor, "!auth"); IERC20(crvBpt).safeApprove(escrow, 0); IERC20(crvBpt).safeApprove(escrow, _value); ICurveVoteEscrow(escrow).increase_amount(_value); return true; } /** * @notice Called by the CrvDepositor to increase unlocked time of curve * @param _value Timestamp to increase locking to */ function increaseTime(uint256 _value) external returns(bool){ require(msg.sender == depositor, "!auth"); ICurveVoteEscrow(escrow).increase_unlock_time(_value); return true; } /** * @notice Withdraw all CRV from Curve's voting escrow contract * @dev Only callable by CrvDepositor and can only withdraw if lock has expired */ function release() external returns(bool){ require(msg.sender == depositor, "!auth"); ICurveVoteEscrow(escrow).withdraw(); return true; } /** * @notice Vote on CRV DAO for proposal */ function vote(uint256 _voteId, address _votingAddress, bool _support) external returns(bool){ require(msg.sender == operator, "!auth"); IVoting(_votingAddress).vote(_voteId,_support,false); return true; } /** * @notice Vote for a single gauge weight via the controller */ function voteGaugeWeight(address _gauge, uint256 _weight) external returns(bool){ require(msg.sender == operator, "!auth"); //vote IVoting(gaugeController).vote_for_gauge_weights(_gauge, _weight); return true; } /** * @notice Claim CRV from Curve * @dev Claim CRV for LP token staking from the CRV minter contract */ function claimCrv(address _gauge) external returns (uint256){ require(msg.sender == operator, "!auth"); uint256 _balance = 0; try IMinter(mintr).mint(_gauge){ _balance = IERC20(crv).balanceOf(address(this)); IERC20(crv).safeTransfer(operator, _balance); }catch{} return _balance; } /** * @notice Claim extra rewards from gauge * @dev Called by operator (Booster) to claim extra rewards */ function claimRewards(address _gauge) external returns(bool){ require(msg.sender == operator, "!auth"); ICurveGauge(_gauge).claim_rewards(); return true; } /** * @notice Claim fees (3crv) from staking lp tokens * @dev Only callable by the operator Booster * @param _distroContract Fee distribution contract * @param _token LP token to claim fees for */ function claimFees(address _distroContract, address _token) external returns (uint256){ require(msg.sender == operator, "!auth"); IFeeDistributor(_distroContract).claimToken(address(this), _token); uint256 _balance = IERC20(_token).balanceOf(address(this)); IERC20(_token).safeTransfer(operator, _balance); return _balance; } function balanceOfPool(address _gauge) public view returns (uint256) { return ICurveGauge(_gauge).balanceOf(address(this)); } function execute( address _to, uint256 _value, bytes calldata _data ) external returns (bool, bytes memory) { require(msg.sender == operator,"!auth"); (bool success, bytes memory result) = _to.call{value:_value}(_data); require(success, "!success"); return (success, result); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./Interfaces.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/SafeERC20.sol"; /** * @title VoterProxyLite * @author ConvexFinance -> AuraFinance * @dev A lite version of the original VoterProxy for use on sidechains */ contract VoterProxyLite { using SafeERC20 for IERC20; using SafeMath for uint256; address public mintr; address public crv; address public rewardDeposit; address public withdrawer; address public owner; address public operator; mapping(address => bool) private stashPool; mapping(address => bool) private protectedTokens; constructor() public { owner = msg.sender; } /** * @notice Initialize the contract. * @param _mintr CRV minter * @param _crv CRV Token address * @param _owner The owner */ function initialize(address _mintr, address _crv, address _owner) external { require(msg.sender == owner, "!auth"); require(crv == address(0), "Only once"); mintr = _mintr; crv = _crv; owner = _owner; protectedTokens[_crv] = true; } function getName() external pure returns (string memory) { return "BalancerVoterProxy"; } function setOwner(address _owner) external { require(msg.sender == owner, "!auth"); owner = _owner; } /** * @notice Allows dao to set the reward withdrawal address * @param _withdrawer Whitelisted withdrawer * @param _rewardDeposit Distributor address */ function setRewardDeposit(address _withdrawer, address _rewardDeposit) external { require(msg.sender == owner, "!auth"); withdrawer = _withdrawer; rewardDeposit = _rewardDeposit; } /** * @notice Allows dao to set the external system config, should it change in the future * @param _mintr Token minter address for claiming rewards */ function setSystemConfig(address _mintr) external returns (bool) { require(msg.sender == owner, "!auth"); mintr = _mintr; return true; } /** * @notice Set the operator of the VoterProxy * @param _operator Address of the operator (Booster) */ function setOperator(address _operator) external { require(msg.sender == owner, "!auth"); require(operator == address(0) || IDeposit(operator).isShutdown() == true, "needs shutdown"); operator = _operator; } function setStashAccess(address _stash, bool _status) external returns (bool) { require(msg.sender == operator, "!auth"); if (_stash != address(0)) { stashPool[_stash] = _status; } return true; } /** * @notice Deposit tokens into the Curve Gauge * @dev Only can be called by the operator (Booster) once this contract has been * whitelisted by the Curve DAO * @param _token Deposit LP token address * @param _gauge Gauge contract to deposit to */ function deposit(address _token, address _gauge) external returns (bool) { require(msg.sender == operator, "!auth"); if (protectedTokens[_token] == false) { protectedTokens[_token] = true; } if (protectedTokens[_gauge] == false) { protectedTokens[_gauge] = true; } uint256 balance = IERC20(_token).balanceOf(address(this)); if (balance > 0) { IERC20(_token).safeApprove(_gauge, 0); IERC20(_token).safeApprove(_gauge, balance); ICurveGauge(_gauge).deposit(balance); } return true; } /** * @notice Withdraw ERC20 tokens that have been distributed as extra rewards * @dev Tokens shouldn't end up here if they can help it. However, dao can * set a withdrawer that can process these to some ExtraRewardDistribution. */ function withdraw(IERC20 _asset) external returns (uint256 balance) { require(msg.sender == withdrawer, "!auth"); require(protectedTokens[address(_asset)] == false, "protected"); balance = _asset.balanceOf(address(this)); _asset.safeApprove(rewardDeposit, 0); _asset.safeApprove(rewardDeposit, balance); IRewardDeposit(rewardDeposit).addReward(address(_asset), balance); return balance; } /** * @notice Withdraw LP tokens from a gauge * @dev Only callable by the operator * @param _token LP token address * @param _gauge Gauge for this LP token * @param _amount Amount of LP token to withdraw */ function withdraw( address _token, address _gauge, uint256 _amount ) public returns (bool) { require(msg.sender == operator, "!auth"); uint256 _balance = IERC20(_token).balanceOf(address(this)); if (_balance < _amount) { _amount = _withdrawSome(_gauge, _amount.sub(_balance)); _amount = _amount.add(_balance); } IERC20(_token).safeTransfer(msg.sender, _amount); return true; } /** * @notice Withdraw all LP tokens from a gauge * @dev Only callable by the operator * @param _token LP token address * @param _gauge Gauge for this LP token */ function withdrawAll(address _token, address _gauge) external returns (bool) { require(msg.sender == operator, "!auth"); uint256 amount = balanceOfPool(_gauge).add(IERC20(_token).balanceOf(address(this))); withdraw(_token, _gauge, amount); return true; } function _withdrawSome(address _gauge, uint256 _amount) internal returns (uint256) { ICurveGauge(_gauge).withdraw(_amount); return _amount; } /** * @notice Claim CRV from Curve * @dev Claim CRV for LP token staking from the CRV minter contract */ function claimCrv(address _gauge) external returns (uint256) { require(msg.sender == operator, "!auth"); uint256 _balance = 0; try IMinter(mintr).mint(_gauge) { _balance = IERC20(crv).balanceOf(address(this)); IERC20(crv).safeTransfer(operator, _balance); } catch {} return _balance; } /** * @notice Claim extra rewards from gauge * @dev Called by operator (Booster) to claim extra rewards */ function claimRewards(address _gauge) external returns (bool) { require(msg.sender == operator, "!auth"); ICurveGauge(_gauge).claim_rewards(); return true; } function balanceOfPool(address _gauge) public view returns (uint256) { return ICurveGauge(_gauge).balanceOf(address(this)); } function execute( address _to, uint256 _value, bytes calldata _data ) external returns (bool, bytes memory) { require(msg.sender == operator, "!auth"); (bool success, bytes memory result) = _to.call{ value: _value }(_data); require(success, "!success"); return (success, result); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
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Multichain Portfolio | 30 Chains
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