编译器
0.8.27+commit.40a35a09
文件 1 的 5:Context.sol
pragma solidity ^0.8.20;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}
文件 2 的 5:IERC20.sol
pragma solidity ^0.8.20;
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
}
文件 3 的 5:Ownable.sol
pragma solidity ^0.8.20;
import {Context} from "../utils/Context.sol";
abstract contract Ownable is Context {
address private _owner;
error OwnableUnauthorizedAccount(address account);
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
文件 4 的 5:ReentrancyGuard.sol
pragma solidity ^0.8.20;
abstract contract ReentrancyGuard {
uint256 private constant NOT_ENTERED = 1;
uint256 private constant ENTERED = 2;
uint256 private _status;
error ReentrancyGuardReentrantCall();
constructor() {
_status = NOT_ENTERED;
}
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
if (_status == ENTERED) {
revert ReentrancyGuardReentrantCall();
}
_status = ENTERED;
}
function _nonReentrantAfter() private {
_status = NOT_ENTERED;
}
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == ENTERED;
}
}
文件 5 的 5:Staking.sol
pragma solidity 0.8.27;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract MiraiStaking is ReentrancyGuard, Ownable {
IERC20 public immutable Token;
uint256 public totalTokensStaked;
uint256 public totalStakedAccruingRewards;
uint256 public currentRewardRate;
uint256 public lastRewardCalculationTime;
uint256 public rewardPerTokenStored;
uint256 public stakingWithdrawalTimeLock = 3 days;
uint256 public withdrawalFeePercentage = 0;
uint256 public rewardsEmissionStart;
uint256 public rewardsEmissionEnd;
uint256 public feesAccrued;
uint256 public storedPendingRewards;
uint256 private constant MAX_FEE = 200;
uint256 private constant BASIS_POINTS = 10000;
uint256 private constant MAX_TIMELOCK = 15 days;
struct Staker {
uint256 amountStaked;
uint256 rewardDebt;
uint256 rewards;
uint256 unstakeInitTime;
}
mapping(address => Staker) public stakers;
event UnstakeInitiated(address indexed user);
event Staked(address indexed user, uint256 amount);
event Unstaked(address indexed user, uint256 amount);
event RewardPaid(address indexed user, uint256 reward);
event UnstakeFeePercentUpdated(uint256 newFeePercent);
event UnstakeTimeLockUpdated(uint256 newTimeLock);
modifier updateReward(address account) {
rewardPerTokenStored = calculateRewardPerToken();
storedPendingRewards = calculatePendingRewards();
lastRewardCalculationTime = getLastActiveTime();
Staker storage staker = stakers[account];
if (staker.unstakeInitTime == 0) {
staker.rewards = calculateEarnedRewards(account);
staker.rewardDebt = rewardPerTokenStored;
}
_;
}
constructor(
address _Mirai,
uint256 _rewardRate,
uint256 _rewardsEmissionStart,
uint256 _emissionDuration
) Ownable(msg.sender) {
Token = IERC20(_Mirai);
currentRewardRate = _rewardRate;
rewardsEmissionStart = _rewardsEmissionStart;
rewardsEmissionEnd = rewardsEmissionStart + _emissionDuration;
}
function getLastActiveTime() public view returns (uint256) {
return block.timestamp < rewardsEmissionEnd ? block.timestamp : rewardsEmissionEnd;
}
function calculatePendingRewards() public view returns (uint256) {
uint256 totalStakedAccruingRewardsCached = totalStakedAccruingRewards;
if (totalStakedAccruingRewardsCached == 0) return storedPendingRewards;
uint256 fullPendingRewards = (getLastActiveTime() - lastRewardCalculationTime) *
currentRewardRate *
1e18;
uint256 roundingError = fullPendingRewards %
totalStakedAccruingRewardsCached;
return storedPendingRewards + fullPendingRewards - roundingError;
}
function calculateRewardPerToken() public view returns (uint256) {
if (totalStakedAccruingRewards == 0) {
return rewardPerTokenStored;
}
return
rewardPerTokenStored +
(((getLastActiveTime() - lastRewardCalculationTime) * currentRewardRate * 1e18) /
totalStakedAccruingRewards);
}
function calculateEarnedRewards(address account) public view returns (uint256) {
Staker storage staker = stakers[account];
if (staker.unstakeInitTime != 0) {
return staker.rewards;
}
return
((staker.amountStaked * (calculateRewardPerToken() - staker.rewardDebt)) /
1e18) + staker.rewards;
}
function depositStake(
uint256 _amount
) external nonReentrant updateReward(msg.sender) {
require(_amount > 0, "Cannot stake 0");
require(block.timestamp >= rewardsEmissionStart, "Staking not yet started");
require(block.timestamp <= rewardsEmissionEnd, "Staking period has ended");
Staker storage staker = stakers[msg.sender];
require(
staker.unstakeInitTime == 0,
"Cannot stake after initiating unstake."
);
totalTokensStaked += _amount;
totalStakedAccruingRewards += _amount;
staker.amountStaked += _amount;
require(
Token.transferFrom(msg.sender, address(this), _amount),
"Token deposit failed"
);
emit Staked(msg.sender, _amount);
}
function beginUnstaking() external updateReward(msg.sender) {
Staker storage staker = stakers[msg.sender];
require(staker.amountStaked > 0, "No tokens staked");
require(staker.unstakeInitTime == 0, "Unstake already initiated");
staker.unstakeInitTime = block.timestamp;
totalStakedAccruingRewards -= staker.amountStaked;
emit UnstakeInitiated(msg.sender);
}
function finalizeUnstaking() external nonReentrant updateReward(msg.sender) {
Staker storage staker = stakers[msg.sender];
require(staker.amountStaked > 0, "No tokens staked");
require(staker.unstakeInitTime > 0, "Unstake not initiated");
require(
block.timestamp >= staker.unstakeInitTime + stakingWithdrawalTimeLock ,
"Timelock not yet passed"
);
uint256 amount = staker.amountStaked;
uint256 reward = staker.rewards;
uint256 fee = (amount * withdrawalFeePercentage ) / BASIS_POINTS;
uint256 amountAfterFee = amount - fee;
uint256 availableForRewards = _calculateAvailableBalance();
feesAccrued += fee;
totalTokensStaked -= amount;
staker.amountStaked = 0;
staker.rewardDebt = 0;
staker.unstakeInitTime = 0;
uint256 totalAmount = amountAfterFee;
if (reward > 0 && availableForRewards >= reward) {
if (storedPendingRewards >= reward * 1e18)
storedPendingRewards -= reward * 1e18;
totalAmount += reward;
staker.rewards = 0;
emit RewardPaid(msg.sender, reward);
}
require(
Token.transfer(msg.sender, totalAmount),
"Unstake transfer failed"
);
emit Unstaked(msg.sender, amount);
}
function withdrawRewards() external nonReentrant updateReward(msg.sender) {
Staker storage staker = stakers[msg.sender];
uint256 reward = staker.rewards;
require(reward > 0, "No rewards to claim");
uint256 availableForRewards = _calculateAvailableBalance();
require(availableForRewards >= reward, "Insufficient funds for reward");
if (storedPendingRewards >= reward * 1e18)
storedPendingRewards -= reward * 1e18;
staker.rewards = 0;
require(Token.transfer(msg.sender, reward), "Reward transfer failed");
emit RewardPaid(msg.sender, reward);
}
function updateUnstakingFee(uint256 _newFee) external onlyOwner {
require(_newFee <= MAX_FEE, "Unstake fee exceeds 2%, maximum allowed");
withdrawalFeePercentage = _newFee;
emit UnstakeFeePercentUpdated(_newFee);
}
function updateWithdrawalLock(uint256 _newTimeLock) external onlyOwner {
require(
_newTimeLock <= MAX_TIMELOCK,
"Time lock must be between 0 to 15 days"
);
stakingWithdrawalTimeLock = _newTimeLock;
emit UnstakeTimeLockUpdated(_newTimeLock);
}
function checkRemainingLockTime(
address _staker
) external view returns (uint256) {
Staker storage staker = stakers[_staker];
if (block.timestamp < staker.unstakeInitTime + stakingWithdrawalTimeLock ) {
return (staker.unstakeInitTime + stakingWithdrawalTimeLock ) - block.timestamp;
} else {
return 0;
}
}
function retrieveAccruedFees(uint256 amount) external onlyOwner {
require(amount <= feesAccrued, "Amount exceeds accrued fees");
feesAccrued -= amount;
require(Token.transfer(msg.sender, amount), "Fee withdrawal failed");
}
function retrieveRemainingTokens()
external
updateReward(address(0))
onlyOwner
{
require(
block.timestamp > rewardsEmissionEnd,
"Cannot withdraw before emission end"
);
uint256 freeContractBalanceCached = _calculateAvailableBalance();
uint256 pendingRewardsCached = calculatePendingRewards() / 1e18;
require(
freeContractBalanceCached > pendingRewardsCached,
"No remaining tokens to withdraw"
);
uint256 remainingBalance = freeContractBalanceCached -
pendingRewardsCached;
require(
Token.transfer(msg.sender, remainingBalance),
"Token withdrawal failed"
);
}
function _calculateAvailableBalance() public view returns (uint256) {
return Token.balanceOf(address(this)) - totalTokensStaked - feesAccrued;
}
}
{
"compilationTarget": {
"src/Staking.sol": "MiraiStaking"
},
"evmVersion": "paris",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": [
":@axelar-network/=lib/",
":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
":axelar-gmp-sdk-solidity/=lib/axelar-gmp-sdk-solidity/contracts/",
":ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
":forge-std/=lib/forge-std/src/",
":interchain-token-service/=lib/interchain-token-service/contracts/",
":openzeppelin-contracts/=lib/openzeppelin-contracts/"
]
}
[{"inputs":[{"internalType":"address","name":"_Mirai","type":"address"},{"internalType":"uint256","name":"_rewardRate","type":"uint256"},{"internalType":"uint256","name":"_rewardsEmissionStart","type":"uint256"},{"internalType":"uint256","name":"_emissionDuration","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newFeePercent","type":"uint256"}],"name":"UnstakeFeePercentUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"}],"name":"UnstakeInitiated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newTimeLock","type":"uint256"}],"name":"UnstakeTimeLockUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Unstaked","type":"event"},{"inputs":[],"name":"Token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"_calculateAvailableBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"beginUnstaking","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"calculateEarnedRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"calculatePendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"calculateRewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_staker","type":"address"}],"name":"checkRemainingLockTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentRewardRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"depositStake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feesAccrued","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"finalizeUnstaking","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getLastActiveTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastRewardCalculationTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"retrieveAccruedFees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retrieveRemainingTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerTokenStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsEmissionEnd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsEmissionStart","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"stakers","outputs":[{"internalType":"uint256","name":"amountStaked","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"},{"internalType":"uint256","name":"rewards","type":"uint256"},{"internalType":"uint256","name":"unstakeInitTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingWithdrawalTimeLock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"storedPendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalStakedAccruingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalTokensStaked","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newFee","type":"uint256"}],"name":"updateUnstakingFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newTimeLock","type":"uint256"}],"name":"updateWithdrawalLock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawalFeePercentage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]