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ERC-20
DeFi
Overview
Max Total Supply
14,014.088393240159151452 apxETH
Holders
356 ( 0.281%)
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
AutoPxEth
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion, Audited
Contract Source Code (Solidity Standard Json-Input format)Audit Report
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import {Ownable2Step} from "openzeppelin-contracts/contracts/access/Ownable2Step.sol"; import {ERC4626} from "solmate/mixins/ERC4626.sol"; import {ERC20} from "solmate/tokens/ERC20.sol"; import {FixedPointMathLib} from "solmate/utils/FixedPointMathLib.sol"; import {SafeTransferLib} from "solmate/utils/SafeTransferLib.sol"; import {Errors} from "./libraries/Errors.sol"; import {IPirexEth} from "./interfaces/IPirexEth.sol"; /** * @title AutoPxEth * @notice Autocompounding vault for (staked) pxETH, adapted from pxCVX vault system * @dev This contract enables autocompounding for pxETH assets and includes various fee mechanisms. * @author redactedcartel.finance */ contract AutoPxEth is Ownable2Step, ERC4626 { /** * @dev Library: SafeTransferLib - Provides safe transfer functions for ERC20 tokens. */ using SafeTransferLib for ERC20; /** * @dev Library: FixedPointMathLib - Provides fixed-point arithmetic for uint256. */ using FixedPointMathLib for uint256; // Constants /** * @dev Maximum withdrawal penalty percentage. */ uint256 private constant MAX_WITHDRAWAL_PENALTY = 50_000; /** * @dev Maximum platform fee percentage. */ uint256 private constant MAX_PLATFORM_FEE = 200_000; /** * @dev Fee denominator for precise fee calculations. */ uint256 private constant FEE_DENOMINATOR = 1_000_000; /** * @dev Duration of the rewards period. */ uint256 private constant REWARDS_DURATION = 7 days; // State variables for tracking rewards and actively staked assets /** * @notice Reference to the PirexEth contract. */ IPirexEth public pirexEth; /** * @notice Timestamp when the current rewards period will end. */ uint256 public periodFinish; /** * @notice Rate at which rewards are distributed per second. */ uint256 public rewardRate; /** * @notice Timestamp of the last update to the reward variables. */ uint256 public lastUpdateTime; /** * @notice Accumulated reward per token stored. */ uint256 public rewardPerTokenStored; /** * @notice Last calculated reward per token paid to stakers. */ uint256 public rewardPerTokenPaid; /** * @notice Total rewards available for distribution. */ uint256 public rewards; /** * @notice Total assets actively staked in the vault. */ uint256 public totalStaked; // State variables related to fees /** * @notice Withdrawal penalty percentage. */ uint256 public withdrawalPenalty = 30_000; /** * @notice Platform fee percentage. */ uint256 public platformFee = 100_000; /** * @notice Address of the platform that receives fees. */ address public platform; // Events /** * @notice Emitted when rewards are harvested and staked. * @dev This event is emitted when a user triggers the harvest function. * @param caller address indexed Address that triggered the harvest. * @param value uint256 Amount of rewards harvested. */ event Harvest(address indexed caller, uint256 value); /** * @notice Emitted when the withdrawal penalty is updated. * @dev This event is emitted when the withdrawal penalty is modified. * @param penalty uint256 New withdrawal penalty percentage. */ event WithdrawalPenaltyUpdated(uint256 penalty); /** * @notice Emitted when the platform fee is updated. * @dev This event is emitted when the platform fee is modified. * @param fee uint256 New platform fee percentage. */ event PlatformFeeUpdated(uint256 fee); /** * @notice Emitted when the platform address is updated. * @dev This event is emitted when the platform address is modified. * @param _platform address New platform address. */ event PlatformUpdated(address _platform); /** * @notice Emitted when new rewards are added to the vault. * @dev This event is emitted when new rewards are added to the vault. * @param reward uint256 Amount of rewards added. */ event RewardAdded(uint256 reward); /** * @notice Emitted when the PirexEth contract address is set. * @dev This event is emitted when the PirexEth contract address is set. * @param _pirexEth address New PirexEth contract address. */ event SetPirexEth(address _pirexEth); // Modifiers /** * @dev Update reward states modifier * @param updateEarned bool Whether to update earned amount so far */ modifier updateReward(bool updateEarned) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (updateEarned) { rewards = earned(); rewardPerTokenPaid = rewardPerTokenStored; } _; } /** * @dev Contract constructor * @param _asset address Asset contract address * @param _platform address Platform address */ constructor( address _asset, address _platform ) ERC4626(ERC20(_asset), "Autocompounding Pirex Ether", "apxETH") { if (_platform == address(0)) revert Errors.ZeroAddress(); platform = _platform; } /*////////////////////////////////////////////////////////////// RESTRICTED FUNCTIONS //////////////////////////////////////////////////////////////*/ /** * @notice Set the PirexEth contract address * @dev Function access restricted to only owner * @param _pirexEth address PirexEth contract address */ function setPirexEth(address _pirexEth) external onlyOwner { if (_pirexEth == address(0)) revert Errors.ZeroAddress(); emit SetPirexEth(_pirexEth); pirexEth = IPirexEth(_pirexEth); } /** * @notice Set the withdrawal penalty * @dev Function access restricted to only owner * @param penalty uint256 Withdrawal penalty */ function setWithdrawalPenalty(uint256 penalty) external onlyOwner { if (penalty > MAX_WITHDRAWAL_PENALTY) revert Errors.ExceedsMax(); withdrawalPenalty = penalty; emit WithdrawalPenaltyUpdated(penalty); } /** * @notice Set the platform fee * @dev Function access restricted to only owner * @param fee uint256 Platform fee */ function setPlatformFee(uint256 fee) external onlyOwner { if (fee > MAX_PLATFORM_FEE) revert Errors.ExceedsMax(); platformFee = fee; emit PlatformFeeUpdated(fee); } /** * @notice Set the platform * @dev Function access restricted to only owner * @param _platform address Platform */ function setPlatform(address _platform) external onlyOwner { if (_platform == address(0)) revert Errors.ZeroAddress(); platform = _platform; emit PlatformUpdated(_platform); } /** * @notice Notify and sync the newly added rewards to be streamed over time * @dev Rewards are streamed following the duration set in REWARDS_DURATION */ function notifyRewardAmount() external updateReward(false) { if (msg.sender != address(pirexEth)) revert Errors.NotPirexEth(); // Rewards transferred directly to this contract are not added to totalStaked // To get the rewards w/o relying on a potentially incorrect passed in arg, // we can use the difference between the asset balance and totalStaked. // Additionally, to avoid re-distributing rewards, deduct the output of `earned` uint256 rewardBalance = asset.balanceOf(address(this)) - totalStaked - earned(); rewardRate = rewardBalance / REWARDS_DURATION; if (rewardRate == 0) revert Errors.NoRewards(); lastUpdateTime = block.timestamp; periodFinish = block.timestamp + REWARDS_DURATION; emit RewardAdded(rewardBalance); } /*////////////////////////////////////////////////////////////// VIEWS //////////////////////////////////////////////////////////////*/ /** * @inheritdoc ERC4626 * @notice Get the amount of available pxETH in the contract * @dev Rewards are streamed for the duration set in REWARDS_DURATION */ function totalAssets() public view override returns (uint256) { // Based on the current totalStaked and available rewards uint256 _totalStaked = totalStaked; uint256 _rewards = ((_totalStaked * (rewardPerToken() - rewardPerTokenPaid)) / 1e18) + rewards; // Deduct the exact reward amount staked (after fees are deducted when calling `harvest`) return _totalStaked + ( _rewards == 0 ? 0 : (_rewards - ((_rewards * platformFee) / FEE_DENOMINATOR)) ); } /** * @notice Returns the last effective timestamp of the current reward period * @return uint256 Timestamp */ function lastTimeRewardApplicable() public view returns (uint256) { return block.timestamp < periodFinish ? block.timestamp : periodFinish; } /** * @notice Returns the amount of rewards per staked token/asset * @return uint256 Rewards amount */ function rewardPerToken() public view returns (uint256) { if (totalStaked == 0) { return rewardPerTokenStored; } return rewardPerTokenStored + ((((lastTimeRewardApplicable() - lastUpdateTime) * rewardRate) * 1e18) / totalStaked); } /** * @notice Returns the earned rewards amount so far * @return uint256 Rewards amount */ function earned() public view returns (uint256) { return ((totalStaked * (rewardPerToken() - rewardPerTokenPaid)) / 1e18) + rewards; } /** * @notice Return the amount of assets per 1 (1e18) share * @return uint256 Assets */ function assetsPerShare() external view returns (uint256) { return previewRedeem(1e18); } /*////////////////////////////////////////////////////////////// INTERNAL FUNCTIONS //////////////////////////////////////////////////////////////*/ /** * @dev Internal method to keep track of the total amount of staked token/asset on deposit/mint */ function _stake(uint256 amount) internal updateReward(true) { totalStaked += amount; } /** * @dev Internal method to keep track of the total amount of staked token/asset on withdrawal/redeem */ function _withdraw(uint256 amount) internal updateReward(true) { totalStaked -= amount; } /*////////////////////////////////////////////////////////////// ERC4626 OVERRIDES //////////////////////////////////////////////////////////////*/ /** * @inheritdoc ERC4626 * @dev Deduct the specified amount of assets from totalStaked to prepare for transfer to the user * @param assets uint256 Assets */ function beforeWithdraw(uint256 assets, uint256) internal override { // Perform harvest to make sure that totalStaked is always equal or larger than assets to be withdrawn if (assets > totalStaked) harvest(); _withdraw(assets); } /** * @inheritdoc ERC4626 * @dev Include the new assets in totalStaked so that rewards can be properly distributed * @param assets uint256 Assets */ function afterDeposit(uint256 assets, uint256) internal override { _stake(assets); } /** * @inheritdoc ERC4626 * @dev Preview the amount of assets a user would receive from redeeming shares */ function previewRedeem( uint256 shares ) public view override returns (uint256) { // Calculate assets based on a user's % ownership of vault shares uint256 assets = convertToAssets(shares); uint256 _totalSupply = totalSupply; // Calculate a penalty - zero if user is the last to withdraw. uint256 penalty = (_totalSupply == 0 || _totalSupply - shares == 0) ? 0 : assets.mulDivUp(withdrawalPenalty, FEE_DENOMINATOR); // Round up the penalty in favour of the protocol. // Redeemable amount is the post-penalty amount return assets - penalty; } /** * @inheritdoc ERC4626 * @notice Preview the amount of shares a user would need to redeem the specified asset amount * @dev This modified version takes into consideration the withdrawal fee */ function previewWithdraw( uint256 assets ) public view override returns (uint256) { // Calculate shares based on the specified assets' proportion of the pool uint256 shares = convertToShares(assets); // Save 1 SLOAD uint256 _totalSupply = totalSupply; // Factor in additional shares to fulfill withdrawal if user is not the last to withdraw return (_totalSupply == 0 || _totalSupply - shares == 0) ? shares : (shares * FEE_DENOMINATOR) / (FEE_DENOMINATOR - withdrawalPenalty); } /*////////////////////////////////////////////////////////////// MUTATIVE FUNCTIONS //////////////////////////////////////////////////////////////*/ /** * @notice Harvest and stake available rewards after distributing fees to the platform * @dev This function claims and stakes the available rewards, deducting a fee for the platform. */ function harvest() public updateReward(true) { uint256 _rewards = rewards; if (_rewards != 0) { rewards = 0; // Fee for platform uint256 feeAmount = (_rewards * platformFee) / FEE_DENOMINATOR; // Deduct fee from reward balance _rewards -= feeAmount; // Claimed rewards should be in pxETH asset.safeTransfer(platform, feeAmount); // Stake rewards sans fee _stake(_rewards); emit Harvest(msg.sender, _rewards); } } /** * @notice Override transfer logic to trigger direct `initiateRedemption`. * @dev This function overrides the standard transfer logic to initiate redemption when transferring to the PirexEth contract. * @param to address Transfer destination * @param amount uint256 Amount * @return bool */ function transfer( address to, uint256 amount ) public override returns (bool) { super.transfer(to, amount); if (to == address(pirexEth)) { pirexEth.initiateRedemption(amount, msg.sender, false); } return true; } /** * @notice Override transferFrom logic to trigger direct `initiateRedemption`. * @dev This function overrides the standard transferFrom logic to initiate redemption when transferring from the PirexEth contract. * @param from Address of the transfer origin. * @param to Address of the transfer destination. * @param amount Amount of tokens to transfer. * @return A boolean indicating the success of the transfer. */ function transferFrom( address from, address to, uint256 amount ) public override returns (bool) { super.transferFrom(from, to, amount); if (to == address(pirexEth)) { pirexEth.initiateRedemption(amount, from, false); } return true; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol) pragma solidity ^0.8.0; import "./Ownable.sol"; /** * @dev Contract module which provides 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} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2Step is Ownable { address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner"); _transferOwnership(sender); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import {ERC20} from "../tokens/ERC20.sol"; import {SafeTransferLib} from "../utils/SafeTransferLib.sol"; import {FixedPointMathLib} from "../utils/FixedPointMathLib.sol"; /// @notice Minimal ERC4626 tokenized Vault implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/mixins/ERC4626.sol) abstract contract ERC4626 is ERC20 { using SafeTransferLib for ERC20; using FixedPointMathLib for uint256; /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Deposit(address indexed caller, address indexed owner, uint256 assets, uint256 shares); event Withdraw( address indexed caller, address indexed receiver, address indexed owner, uint256 assets, uint256 shares ); /*////////////////////////////////////////////////////////////// IMMUTABLES //////////////////////////////////////////////////////////////*/ ERC20 public immutable asset; constructor( ERC20 _asset, string memory _name, string memory _symbol ) ERC20(_name, _symbol, _asset.decimals()) { asset = _asset; } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LOGIC //////////////////////////////////////////////////////////////*/ function deposit(uint256 assets, address receiver) public virtual returns (uint256 shares) { // Check for rounding error since we round down in previewDeposit. require((shares = previewDeposit(assets)) != 0, "ZERO_SHARES"); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares); } function mint(uint256 shares, address receiver) public virtual returns (uint256 assets) { assets = previewMint(shares); // No need to check for rounding error, previewMint rounds up. // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares); } function withdraw( uint256 assets, address receiver, address owner ) public virtual returns (uint256 shares) { shares = previewWithdraw(assets); // No need to check for rounding error, previewWithdraw rounds up. if (msg.sender != owner) { uint256 allowed = allowance[owner][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[owner][msg.sender] = allowed - shares; } beforeWithdraw(assets, shares); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); } function redeem( uint256 shares, address receiver, address owner ) public virtual returns (uint256 assets) { if (msg.sender != owner) { uint256 allowed = allowance[owner][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[owner][msg.sender] = allowed - shares; } // Check for rounding error since we round down in previewRedeem. require((assets = previewRedeem(shares)) != 0, "ZERO_ASSETS"); beforeWithdraw(assets, shares); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); } /*////////////////////////////////////////////////////////////// ACCOUNTING LOGIC //////////////////////////////////////////////////////////////*/ function totalAssets() public view virtual returns (uint256); function convertToShares(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivDown(supply, totalAssets()); } function convertToAssets(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivDown(totalAssets(), supply); } function previewDeposit(uint256 assets) public view virtual returns (uint256) { return convertToShares(assets); } function previewMint(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivUp(totalAssets(), supply); } function previewWithdraw(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivUp(supply, totalAssets()); } function previewRedeem(uint256 shares) public view virtual returns (uint256) { return convertToAssets(shares); } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LIMIT LOGIC //////////////////////////////////////////////////////////////*/ function maxDeposit(address) public view virtual returns (uint256) { return type(uint256).max; } function maxMint(address) public view virtual returns (uint256) { return type(uint256).max; } function maxWithdraw(address owner) public view virtual returns (uint256) { return convertToAssets(balanceOf[owner]); } function maxRedeem(address owner) public view virtual returns (uint256) { return balanceOf[owner]; } /*////////////////////////////////////////////////////////////// INTERNAL HOOKS LOGIC //////////////////////////////////////////////////////////////*/ function beforeWithdraw(uint256 assets, uint256 shares) internal virtual {} function afterDeposit(uint256 assets, uint256 shares) internal virtual {} }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Modern and gas efficient ERC20 + EIP-2612 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol) /// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it. abstract contract ERC20 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Transfer(address indexed from, address indexed to, uint256 amount); event Approval(address indexed owner, address indexed spender, uint256 amount); /*////////////////////////////////////////////////////////////// METADATA STORAGE //////////////////////////////////////////////////////////////*/ string public name; string public symbol; uint8 public immutable decimals; /*////////////////////////////////////////////////////////////// ERC20 STORAGE //////////////////////////////////////////////////////////////*/ uint256 public totalSupply; mapping(address => uint256) public balanceOf; mapping(address => mapping(address => uint256)) public allowance; /*////////////////////////////////////////////////////////////// EIP-2612 STORAGE //////////////////////////////////////////////////////////////*/ uint256 internal immutable INITIAL_CHAIN_ID; bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR; mapping(address => uint256) public nonces; /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor( string memory _name, string memory _symbol, uint8 _decimals ) { name = _name; symbol = _symbol; decimals = _decimals; INITIAL_CHAIN_ID = block.chainid; INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator(); } /*////////////////////////////////////////////////////////////// ERC20 LOGIC //////////////////////////////////////////////////////////////*/ function approve(address spender, uint256 amount) public virtual returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public virtual returns (bool) { balanceOf[msg.sender] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(msg.sender, to, amount); return true; } function transferFrom( address from, address to, uint256 amount ) public virtual returns (bool) { uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount; balanceOf[from] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(from, to, amount); return true; } /*////////////////////////////////////////////////////////////// EIP-2612 LOGIC //////////////////////////////////////////////////////////////*/ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED"); // Unchecked because the only math done is incrementing // the owner's nonce which cannot realistically overflow. unchecked { address recoveredAddress = ecrecover( keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR(), keccak256( abi.encode( keccak256( "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)" ), owner, spender, value, nonces[owner]++, deadline ) ) ) ), v, r, s ); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER"); allowance[recoveredAddress][spender] = value; } emit Approval(owner, spender, value); } function DOMAIN_SEPARATOR() public view virtual returns (bytes32) { return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator(); } function computeDomainSeparator() internal view virtual returns (bytes32) { return keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(name)), keccak256("1"), block.chainid, address(this) ) ); } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint(address to, uint256 amount) internal virtual { totalSupply += amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(address(0), to, amount); } function _burn(address from, uint256 amount) internal virtual { balanceOf[from] -= amount; // Cannot underflow because a user's balance // will never be larger than the total supply. unchecked { totalSupply -= amount; } emit Transfer(from, address(0), amount); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) /// @author Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol) library FixedPointMathLib { /*////////////////////////////////////////////////////////////// SIMPLIFIED FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ uint256 internal constant MAX_UINT256 = 2**256 - 1; uint256 internal constant WAD = 1e18; // The scalar of ETH and most ERC20s. function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down. } function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, y, WAD); // Equivalent to (x * y) / WAD rounded up. } function divWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, WAD, y); // Equivalent to (x * WAD) / y rounded down. } function divWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, WAD, y); // Equivalent to (x * WAD) / y rounded up. } /*////////////////////////////////////////////////////////////// LOW LEVEL FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ function mulDivDown( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // Divide x * y by the denominator. z := div(mul(x, y), denominator) } } function mulDivUp( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // If x * y modulo the denominator is strictly greater than 0, // 1 is added to round up the division of x * y by the denominator. z := add(gt(mod(mul(x, y), denominator), 0), div(mul(x, y), denominator)) } } function rpow( uint256 x, uint256 n, uint256 scalar ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { switch x case 0 { switch n case 0 { // 0 ** 0 = 1 z := scalar } default { // 0 ** n = 0 z := 0 } } default { switch mod(n, 2) case 0 { // If n is even, store scalar in z for now. z := scalar } default { // If n is odd, store x in z for now. z := x } // Shifting right by 1 is like dividing by 2. let half := shr(1, scalar) for { // Shift n right by 1 before looping to halve it. n := shr(1, n) } n { // Shift n right by 1 each iteration to halve it. n := shr(1, n) } { // Revert immediately if x ** 2 would overflow. // Equivalent to iszero(eq(div(xx, x), x)) here. if shr(128, x) { revert(0, 0) } // Store x squared. let xx := mul(x, x) // Round to the nearest number. let xxRound := add(xx, half) // Revert if xx + half overflowed. if lt(xxRound, xx) { revert(0, 0) } // Set x to scaled xxRound. x := div(xxRound, scalar) // If n is even: if mod(n, 2) { // Compute z * x. let zx := mul(z, x) // If z * x overflowed: if iszero(eq(div(zx, x), z)) { // Revert if x is non-zero. if iszero(iszero(x)) { revert(0, 0) } } // Round to the nearest number. let zxRound := add(zx, half) // Revert if zx + half overflowed. if lt(zxRound, zx) { revert(0, 0) } // Return properly scaled zxRound. z := div(zxRound, scalar) } } } } } /*////////////////////////////////////////////////////////////// GENERAL NUMBER UTILITIES //////////////////////////////////////////////////////////////*/ function sqrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { let y := x // We start y at x, which will help us make our initial estimate. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // We check y >= 2^(k + 8) but shift right by k bits // each branch to ensure that if x >= 256, then y >= 256. if iszero(lt(y, 0x10000000000000000000000000000000000)) { y := shr(128, y) z := shl(64, z) } if iszero(lt(y, 0x1000000000000000000)) { y := shr(64, y) z := shl(32, z) } if iszero(lt(y, 0x10000000000)) { y := shr(32, y) z := shl(16, z) } if iszero(lt(y, 0x1000000)) { y := shr(16, y) z := shl(8, z) } // Goal was to get z*z*y within a small factor of x. More iterations could // get y in a tighter range. Currently, we will have y in [256, 256*2^16). // We ensured y >= 256 so that the relative difference between y and y+1 is small. // That's not possible if x < 256 but we can just verify those cases exhaustively. // Now, z*z*y <= x < z*z*(y+1), and y <= 2^(16+8), and either y >= 256, or x < 256. // Correctness can be checked exhaustively for x < 256, so we assume y >= 256. // Then z*sqrt(y) is within sqrt(257)/sqrt(256) of sqrt(x), or about 20bps. // For s in the range [1/256, 256], the estimate f(s) = (181/1024) * (s+1) is in the range // (1/2.84 * sqrt(s), 2.84 * sqrt(s)), with largest error when s = 1 and when s = 256 or 1/256. // Since y is in [256, 256*2^16), let a = y/65536, so that a is in [1/256, 256). Then we can estimate // sqrt(y) using sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2^18. // There is no overflow risk here since y < 2^136 after the first branch above. z := shr(18, mul(z, add(y, 65536))) // A mul() is saved from starting z at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If x+1 is a perfect square, the Babylonian method cycles between // floor(sqrt(x)) and ceil(sqrt(x)). This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division // Since the ceil is rare, we save gas on the assignment and repeat division in the rare case. // If you don't care whether the floor or ceil square root is returned, you can remove this statement. z := sub(z, lt(div(x, z), z)) } } function unsafeMod(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Mod x by y. Note this will return // 0 instead of reverting if y is zero. z := mod(x, y) } } function unsafeDiv(uint256 x, uint256 y) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { // Divide x by y. Note this will return // 0 instead of reverting if y is zero. r := div(x, y) } } function unsafeDivUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Add 1 to x * y if x % y > 0. Note this will // return 0 instead of reverting if y is zero. z := add(gt(mod(x, y), 0), div(x, y)) } } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import {ERC20} from "../tokens/ERC20.sol"; /// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol) /// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer. /// @dev Note that none of the functions in this library check that a token has code at all! That responsibility is delegated to the caller. library SafeTransferLib { /*////////////////////////////////////////////////////////////// ETH OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferETH(address to, uint256 amount) internal { bool success; /// @solidity memory-safe-assembly assembly { // Transfer the ETH and store if it succeeded or not. success := call(gas(), to, amount, 0, 0, 0, 0) } require(success, "ETH_TRANSFER_FAILED"); } /*////////////////////////////////////////////////////////////// ERC20 OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferFrom( ERC20 token, address from, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), from) // Append the "from" argument. mstore(add(freeMemoryPointer, 36), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 68), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 100 because the length of our calldata totals up like so: 4 + 32 * 3. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 100, 0, 32) ) } require(success, "TRANSFER_FROM_FAILED"); } function safeTransfer( ERC20 token, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "TRANSFER_FAILED"); } function safeApprove( ERC20 token, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "APPROVE_FAILED"); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; library Errors { /** * @dev Zero address specified */ error ZeroAddress(); /** * @dev Zero amount specified */ error ZeroAmount(); /** * @dev Invalid fee specified */ error InvalidFee(); /** * @dev Invalid max fee specified */ error InvalidMaxFee(); /** * @dev Zero multiplier used */ error ZeroMultiplier(); /** * @dev ETH deposit is paused */ error DepositingEtherPaused(); /** * @dev ETH deposit is not paused */ error DepositingEtherNotPaused(); /** * @dev Contract is paused */ error Paused(); /** * @dev Contract is not paused */ error NotPaused(); /** * @dev Validator not yet dissolved */ error NotDissolved(); /** * @dev Validator not yet withdrawable */ error NotWithdrawable(); /** * @dev Validator has been previously used before */ error NoUsedValidator(); /** * @dev Not oracle adapter */ error NotOracleAdapter(); /** * @dev Not reward recipient */ error NotRewardRecipient(); /** * @dev Exceeding max value */ error ExceedsMax(); /** * @dev No rewards available */ error NoRewards(); /** * @dev Not PirexEth */ error NotPirexEth(); /** * @dev Not minter */ error NotMinter(); /** * @dev Not burner */ error NotBurner(); /** * @dev Empty string */ error EmptyString(); /** * @dev Validator is Not Staking */ error ValidatorNotStaking(); /** * @dev not enough buffer */ error NotEnoughBuffer(); /** * @dev validator queue empty */ error ValidatorQueueEmpty(); /** * @dev out of bounds */ error OutOfBounds(); /** * @dev cannot trigger validator exit */ error NoValidatorExit(); /** * @dev cannot initiate redemption partially */ error NoPartialInitiateRedemption(); /** * @dev not enough validators */ error NotEnoughValidators(); /** * @dev not enough ETH */ error NotEnoughETH(); /** * @dev max processed count is invalid (< 1) */ error InvalidMaxProcessedCount(); /** * @dev fromIndex and toIndex are invalid */ error InvalidIndexRanges(); /** * @dev ETH is not allowed */ error NoETHAllowed(); /** * @dev ETH is not passed */ error NoETH(); /** * @dev validator status is neither dissolved nor slashed */ error StatusNotDissolvedOrSlashed(); /** * @dev validator status is neither withdrawable nor staking */ error StatusNotWithdrawableOrStaking(); /** * @dev account is not approved */ error AccountNotApproved(); /** * @dev invalid token specified */ error InvalidToken(); /** * @dev not same as deposit size */ error InvalidAmount(); /** * @dev contract not recognised */ error UnrecorgnisedContract(); /** * @dev empty array */ error EmptyArray(); /** * @dev arrays length mismatch */ error MismatchedArrayLengths(); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import {DataTypes} from "../libraries/DataTypes.sol"; /** * @title IPirexEth * @notice Interface for the PirexEth contract * @dev This interface defines the methods for interacting with PirexEth. * @author redactedcartel.finance */ interface IPirexEth { /** * @notice Initiate redemption by burning pxETH in return for upxETH * @dev This function allows the initiation of redemption by burning pxETH in exchange for upxETH. * @param _assets uint256 The amount of assets to burn. If the caller is AutoPxEth, then apxETH; pxETH otherwise. * @param _receiver address The address to receive upxETH. * @param _shouldTriggerValidatorExit bool Whether the initiation should trigger voluntary exit. * @return postFeeAmount uint256 The amount of pxETH burnt for the receiver. * @return feeAmount uint256 The amount of pxETH distributed as fees. */ function initiateRedemption( uint256 _assets, address _receiver, bool _shouldTriggerValidatorExit ) external returns (uint256 postFeeAmount, uint256 feeAmount); /** * @notice Dissolve validator * @dev This function dissolves a validator. * @param _pubKey bytes The public key of the validator. */ function dissolveValidator(bytes calldata _pubKey) external payable; /** * @notice Update validator state to be slashed * @dev This function updates the validator state to be slashed. * @param _pubKey bytes The public key of the validator. * @param _removeIndex uint256 The index of the validator to be slashed. * @param _amount uint256 The ETH amount released from the Beacon chain. * @param _unordered bool Whether to remove from the staking validator queue in order or not. * @param _useBuffer bool Whether to use a buffer to compensate for the loss. * @param _burnerAccounts DataTypes.BurnerAccount[] Burner accounts. */ function slashValidator( bytes calldata _pubKey, uint256 _removeIndex, uint256 _amount, bool _unordered, bool _useBuffer, DataTypes.BurnerAccount[] calldata _burnerAccounts ) external payable; /** * @notice Harvest and mint staking rewards when available * @dev This function harvests and mints staking rewards when available. * @param _endBlock uint256 The block until which ETH rewards are computed. */ function harvest(uint256 _endBlock) external payable; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^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() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; /** * @title DataTypes * @notice Library containing various data structures and enums for the PirexEth. * @dev This library provides data structures and enums crucial for the functionality of the Pirex protocol. * @author redactedcartel.finance */ library DataTypes { // Validator struct type struct Validator { // Publickey of the validator bytes pubKey; // Signature associated with the validator bytes signature; // Root hash of deposit data for the validator bytes32 depositDataRoot; // beneficiazry address to receive pxEth against preDeposit address receiver; } // ValidatorDeque struct type struct ValidatorDeque { // Beginning index of the validator deque int128 _begin; // End index of the validator deque int128 _end; // Mapping of validator index to Validator struct mapping(int128 => Validator) _validators; } // Burner Account Type struct BurnerAccount { // Address of the burner account address account; // Amount associated with the burner account uint256 amount; } // Configurable fees enum Fees { // Fee type for deposit Deposit, // Fee type for redemption Redemption, // Fee type for instant redemption InstantRedemption } // Configurable contracts enum Contract { // PxEth contract PxEth, // UpxEth contract UpxEth, // AutoPxEth contract AutoPxEth, // OracleAdapter contract OracleAdapter, // PirexEth contract PirexEth, // RewardRecipient contract RewardRecipient } // Validator statuses enum ValidatorStatus { // The validator is not staking and has no defined status. None, // The validator is actively participating in the staking process. // It could be in one of the following states: pending_initialized, pending_queued, or active_ongoing. Staking, // The validator has proceed with the withdrawal process. // It represents a meta state for active_exiting, exited_unslashed, and the withdrawal process being possible. Withdrawable, // The validator's status indicating that ETH is released to the pirexEthValidators // It represents the withdrawal_done status. Dissolved, // The validator's status indicating that it has been slashed due to misbehavior. // It serves as a meta state encompassing active_slashed, exited_slashed, // and the possibility of starting the withdrawal process (withdrawal_possible) or already completed (withdrawal_done) // with the release of ETH, subject to a penalty for the misbehavior. Slashed } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
{ "remappings": [ "ds-test/=lib/forge-std/lib/ds-test/src/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/", "solmate/=lib/solmate/src/", "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/", "openzeppelin/=lib/openzeppelin-contracts/contracts/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "paris", "libraries": { "src/libraries/ValidatorQueue.sol": { "ValidatorQueue": "0x9e0d7d79735e1c63333128149c7b616a0dc0bbdb" } } }
Contract Security Audit
- Spearbit- Sept 19th, 2022 - Security Audit Report
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000004c154b66cb340f3ae24111cc767e0184ed00cc6000000000000000000000000a52fd396891e7a74b641a2cb1a6999fcf56b077e
-----Decoded View---------------
Arg [0] : _asset (address): 0x04C154b66CB340F3Ae24111CC767e0184Ed00Cc6
Arg [1] : _platform (address): 0xA52Fd396891E7A74b641a2Cb1A6999Fcf56B077e
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000004c154b66cb340f3ae24111cc767e0184ed00cc6
Arg [1] : 000000000000000000000000a52fd396891e7a74b641a2cb1a6999fcf56b077e
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