Description:
Multi-signature wallet contract requiring multiple confirmations for transaction execution.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"src/main/RedeemOperator.sol": {
"content": "// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.25;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import "../interfaces/IRedeemOperator.sol";
import "../interfaces/IVault.sol";
import "./libraries/Errors.sol";
import "./common/Constants.sol";
/**
* @title RedeemOperator contract
* @author Naturelab
* @notice Manages temporary storage of share tokens and facilitates redemption operations.
* @dev Implements the IRedeemOperator interface and uses OpenZeppelin libraries for safety and utility functions.
*/
contract RedeemOperator is IRedeemOperator, Constants, Ownable {
using SafeERC20 for IERC20;
using Math for uint256;
using EnumerableSet for EnumerableSet.AddressSet;
// Used for precise calculations
uint256 public immutable PRECISION;
// Address of the vault contract (immutable)
address public immutable vault;
// Address of the core token contract (immutable)
address public immutable asset;
// Address of the operator managing withdrawals
address public operator;
// Address to receive fees
address public feeReceiver;
// Mapping to track withdrawal requests
mapping(address => uint256) private _withdrawalRequest;
// Set to keep track of pending withdrawers
EnumerableSet.AddressSet private _pendingWithdrawers;
modifier onlyVault() {
if (msg.sender != vault) revert Errors.CallerNotVault();
_;
}
modifier onlyOperator() {
if (msg.sender != operator) revert Errors.CallerNotOperator();
_;
}
/**
* @dev Initializes the contract with the vault, operator, fee receiver, and gas parameters.
* @param _admin Address of the admin.
* @param _vault Address of the vault contract.
* @param _asset Address of the core token contract.
* @param _operator Address of the operator.
* @param _feeReceiver Address to receive fees.
*/
constructor(address _admin, address _vault, address _asset, address _operator, address _feeReceiver)
Ownable(_admin)
{
if (_vault == address(0)) revert Errors.InvalidVault();
if (_asset == address(0)) revert Errors.InvalidAsset();
if (_operator == address(0)) revert Errors.InvalidNewOperator();
if (_feeReceiver == address(0)) revert Errors.InvalidFeeReceiver();
vault = _vault;
operator = _operator;
feeReceiver = _feeReceiver;
asset = _asset;
PRECISION = IVault(_vault).getPrecison();
}
/**
* @dev Updates the operator address.
* @param _newOperator New operator address.
*/
function updateOperator(address _newOperator) external onlyOwner {
if (_newOperator == address(0)) revert Errors.InvalidNewOperator();
emit UpdateOperator(operator, _newOperator);
operator = _newOperator;
}
/**
* @dev Update the address of the recipient for management fees.
* @param _newFeeReceiver The new address of the recipient for management fees.
*/
function updateFeeReceiver(address _newFeeReceiver) external onlyOwner {
if (_newFeeReceiver == address(0)) revert Errors.InvalidFeeReceiver();
emit UpdateFeeReceiver(feeReceiver, _newFeeReceiver);
feeReceiver = _newFeeReceiver;
}
/**
* @dev Registers a withdrawal request for a user.
* @param _user Address of the user requesting withdrawal.
* @param _shares Amount of shares to withdraw.
*/
function registerWithdrawal(address _user, uint256 _shares) external onlyVault {
if (_shares == 0) revert Errors.InvalidShares();
// Handle existing pending withdrawal
if (_pendingWithdrawers.contains(_user)) {
revert Errors.IncorrectState();
} else {
// Register new withdrawal request
_pendingWithdrawers.add(_user);
_withdrawalRequest[_user] = _shares;
}
emit RegisterWithdrawal(_user, _shares);
}
/**
* @dev Returns the withdrawal request details for a user.
* @param _user Address of the user.
* @return WithdrawalRequest struct containing the token address and shares amount.
*/
function withdrawalRequest(address _user) external view returns (uint256) {
return (_withdrawalRequest[_user]);
}
/**
* @dev Returns the withdrawal request details for multiple users.
* @param _users Array of user addresses.
* @return shares_ Array of shares requested for withdrawal.
*/
function withdrawalRequests(address[] calldata _users) external view returns (uint256[] memory shares_) {
uint256 count_ = _users.length;
if (count_ == 0) revert Errors.InvalidLength();
shares_ = new uint256[](count_);
for (uint256 i = 0; i < count_; ++i) {
shares_[i] = _withdrawalRequest[_users[i]];
}
}
/**
* @dev Returns the number of pending withdrawers.
* @return Number of pending withdrawers.
*/
function pendingWithdrawersCount() external view returns (uint256) {
return _pendingWithdrawers.length();
}
/**
* @dev Returns a paginated list of pending withdrawers.
* @param _limit Maximum number of addresses to return.
* @param _offset Offset for pagination.
* @return result_ Array of addresses of pending withdrawers.
*/
function pendingWithdrawers(uint256 _limit, uint256 _offset) external view returns (address[] memory result_) {
uint256 count_ = _pendingWithdrawers.length();
if (_offset >= count_ || _limit == 0) return result_;
count_ -= _offset;
if (count_ > _limit) count_ = _limit;
result_ = new address[](count_);
for (uint256 i = 0; i < count_; ++i) {
result_[i] = _pendingWithdrawers.at(_offset + i);
}
return result_;
}
/**
* @dev Returns the list of all pending withdrawers.
* @return Array of addresses of all pending withdrawers.
*/
function allPendingWithdrawers() external view returns (address[] memory) {
return _pendingWithdrawers.values();
}
function confirmWithdrawal(address[] memory _users, uint256 _totalGasTokenAmount) external onlyOperator {
uint256 totalShares_;
for (uint256 i = 0; i < _users.length; ++i) {
if (!_pendingWithdrawers.contains(_users[i])) revert Errors.InvalidWithdrawalUser();
totalShares_ += _withdrawalRequest[_users[i]];
}
uint256 exchangePrice_ = IVault(vault).exchangePrice();
uint256 lastExchangePrice = IVault(vault).lastExchangePrice();
// if (lastExchangePrice == 0) revert Errors.UnSupportedOperation();
uint256 cutPercentage_;
if (exchangePrice_ < lastExchangePrice) {
cutPercentage_ = (lastExchangePrice - exchangePrice_).mulDiv(
(IERC20(vault).totalSupply() - totalShares_) * PRECISION,
totalShares_ * exchangePrice_,
Math.Rounding.Ceil
);
}
uint256 tokenBalanceBefore_ = IERC20(asset).balanceOf(address(this));
IVault(vault).optionalRedeem(asset, totalShares_, cutPercentage_, address(this), address(this));
uint256 tokenBalanceGet_ = IERC20(asset).balanceOf(address(this)) - tokenBalanceBefore_;
uint256 assetPerShare_ = tokenBalanceGet_.mulDiv(PRECISION, totalShares_, Math.Rounding.Floor);
address thisUser_;
uint256 thisUserGet_;
uint256 gasPerUser_ = _totalGasTokenAmount / _users.length;
uint256[] memory amounts_ = new uint256[](_users.length);
for (uint256 i = 0; i < _users.length; ++i) {
thisUser_ = _users[i];
thisUserGet_ = _withdrawalRequest[thisUser_].mulDiv(assetPerShare_, PRECISION, Math.Rounding.Floor);
// If the user's share is not enough to cover the gas, it will fail.
thisUserGet_ -= gasPerUser_;
IERC20(asset).safeTransfer(thisUser_, thisUserGet_);
amounts_[i] = thisUserGet_;
_pendingWithdrawers.remove(thisUser_);
delete _withdrawalRequest[thisUser_];
}
emit ConfirmWithdrawal(_users, amounts_);
uint256 totalGas_ = gasPerUser_ * _users.length;
IERC20(asset).safeTransfer(feeReceiver, totalGas_);
}
function _refundWithdrawal(address _user) internal {
if (!_pendingWithdrawers.contains(_user)) revert Errors.InvalidWithdrawalUser();
uint256 shares_ = _withdrawalRequest[_user];
delete _withdrawalRequest[_user];
_pendingWithdrawers.remove(_user);
IERC20(vault).safeTransfer(_user, shares_);
}
function refundWithdrawals(address[] calldata _users) external onlyOperator {
for (uint256 i = 0; i < _users.length; ++i) {
_refundWithdrawal(_users[i]);
}
}
/**
* @dev Handles accidental transfers of tokens or ETH to this contract.
* @param _token Address of the token to sweep.
*/
function sweep(address _token) external onlyOwner {
uint256 amount_ = IERC20(_token).balanceOf(address(this));
IERC20(_token).safeTransfer(msg.sender, amount_);
uint256 ethbalance_ = address(this).balance;
if (ethbalance_ > 0) {
Address.sendValue(payable(msg.sender), ethbalance_);
}
emit Sweep(_token);
}
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/access/Ownable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {Context} from "../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.
*
* The initial owner is set to the address provided by the deployer. 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;
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @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 {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @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 {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_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);
}
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../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 Address for address;
/**
* @dev An operation with an ERC20 token failed.
*/
error SafeERC20FailedOperation(address token);
/**
* @dev Indicates a failed `decreaseAllowance` request.
*/
error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
forceApprove(token, spender, oldAllowance + value);
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
* value, non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
unchecked {
uint256 currentAllowance = token.allowance(address(this), spender);
if (currentAllowance < requestedDecrease) {
revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
}
forceApprove(token, spender, currentAllowance - requestedDecrease);
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
* to be set to zero before setting it to a non-zero value, such as USDT.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @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);
if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// 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 cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
}
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/utils/structs/EnumerableSet.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.
pragma solidity ^0.8.20;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```solidity
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*
* [WARNING]
* ====
* Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
* unusable.
* See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
*
* In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
* array of EnumerableSet.
* ====
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position is the index of the value in the `values` array plus 1.
// Position 0 is used to mean a value is not in the set.
mapping(bytes32 value => uint256) _positions;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._positions[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We cache the value's position to prevent multiple reads from the same storage slot
uint256 position = set._positions[value];
if (position != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 valueIndex = position - 1;
uint256 lastIndex = set._values.length - 1;
if (valueIndex != lastIndex) {
bytes32 lastValue = set._values[lastIndex];
// Move the lastValue to the index where the value to delete is
set._values[valueIndex] = lastValue;
// Update the tracked position of the lastValue (that was just moved)
set._positions[lastValue] = position;
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the tracked position for the deleted slot
delete set._positions[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._positions[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
bytes32[] memory store = _values(set._inner);
bytes32[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/utils/math/Math.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Muldiv operation overflow.
*/
error MathOverflowedMulDiv();
enum Rounding {
Floor, // Toward negative infinity
Ceil, // Toward positive infinity
Trunc, // Toward zero
Expand // Away from zero
}
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// 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.
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
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.
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds towards infinity instead
* of rounding towards zero.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
if (b == 0) {
// Guarantee the same behavior as in a regular Solidity division.
return a / b;
}
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
* denominator == 0.
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
* Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0 = x * y; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
if (denominator <= prod1) {
revert MathOverflowedMulDiv();
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator.
// Always >= 1. See https://cs.stackexchange.com/q/138556/92363.
uint256 twos = denominator & (0 - denominator);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
// works in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
* towards zero.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256 of a positive value rounded towards zero.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
}
}
/**
* @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
*/
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
return uint8(rounding) % 2 == 1;
}
}
"
},
"src/interfaces/IRedeemOperator.sol": {
"content": "// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.25;
interface IRedeemOperator {
// Events for logging actions
event RegisterWithdrawal(address indexed user, uint256 shares);
event ConfirmWithdrawal(address[] users, uint256[] amounts);
event UpdateOperator(address oldOperator, address newOperator);
event UpdateFeeReceiver(address oldFeeReceiver, address newFeeReceiver);
event Sweep(address token);
function registerWithdrawal(address _user, uint256 _shares) external;
function pendingWithdrawersCount() external view returns (uint256);
function pendingWithdrawers(uint256 _limit, uint256 _offset) external view returns (address[] memory result_);
function allPendingWithdrawers() external view returns (address[] memory);
function confirmWithdrawal(address[] calldata _Users, uint256 _totalGasTokenAmount) external;
}
"
},
"src/interfaces/IVault.sol": {
"content": "// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.25;
interface IVault {
event UpdateMarketCapacity(uint256 oldCapacityLimit, uint256 newCapacityLimit);
event UpdateManagementFee(uint256 oldManagementFee, uint256 newManagementFee);
event UpdateManagementFeeClaimPeriod(uint256 oldManagementFeeClaimPeriod, uint256 newManagementFeeClaimPeriod);
event UpdateMaxPriceUpdatePeriod(uint256 oldMaxPriceUpdatePeriod, uint256 newMaxPriceUpdatePeriod);
event UpdateRevenueRate(uint256 oldRevenueRate, uint256 newRevenueRate);
event UpdateExitFeeRate(uint256 oldExitFeeRate, uint256 newExitFeeRate);
event UpdateRebalancer(address oldRebalancer, address newRebalancer);
event UpdateUnbackedMinter(address oldUnbackedMinter, address newUnbackedMinter);
event UpdateFeeReceiver(address oldFeeReceiver, address newFeeReceiver);
event UpdateRedeemOperator(address oldRedeemOperator, address newRedeemOperator);
event UpdateExchangePrice(uint256 newExchangePrice, uint256 newRevenue);
event UpdateminDepositAmount(uint256 oldminDepositAmount, uint256 newminDepositAmount);
event TransferToStrategy(address token, uint256 amount, uint256 strategyIndex);
event OptionalDeposit(address caller, address token, uint256 assets, address receiver, address referral);
event OptionalRedeem(address token, uint256 shares, address receiver, address owner);
event RequestRedeem(address user, uint256 shares, address token);
event CollectManagementFee(uint256 assets);
event CollectRevenue(uint256 revenue);
event AddToken(address token);
event RemoveToken(address token);
/**
* @dev Parameters for initializing the vault contract.
* @param underlyingToken The address of the underlying token for the vault.
* @param name The name of the vault token.
* @param symbol The symbol of the vault token.
* @param marketCapacity The maximum market capacity of the vault.
* @param managementFeeRate The rate of the management fee.
* @param managementFeeClaimPeriod The period for claiming the management fee.
* @param maxPriceUpdatePeriod The maximum allowed price update period.
* @param revenueRate The rate of the revenue fee.
* @param exitFeeRate The rate of the exit fee.
* @param admin The address of the administrator.
* @param rebalancer The address responsible for rebalancing the vault.
* @param feeReceiver The address that will receive the fees.
* @param redeemOperator The address of the operator responsible for redeeming shares
*/
struct VaultParams {
address underlyingToken;
string name;
string symbol;
uint256 marketCapacity;
uint256 managementFeeRate;
uint256 managementFeeClaimPeriod;
uint256 maxPriceUpdatePeriod;
uint256 revenueRate;
uint256 exitFeeRate;
address admin;
address rebalancer;
address feeReceiver;
address redeemOperator;
}
/**
* @dev
* @param exchangePrice The exchange rate used during user deposit and withdrawal operations.
* @param revenueExchangePrice The exchange rate used when calculating performance fees,Performance fees will be recorded when the real exchange rate exceeds this rate.
* @param revenue Collected revenue, stored in pegged ETH.
* @param lastClaimMngFeeTime The last time the management fees were charged.
* @param lastUpdatePriceTime The last time the exchange price was updated.
*/
struct VaultState {
uint256 exchangePrice;
uint256 revenueExchangePrice;
uint256 revenue;
uint256 lastClaimMngFeeTime;
uint256 lastUpdatePriceTime;
}
function optionalRedeem(address _token, uint256 _shares, uint256 _cutPercentage, address _receiver, address _owner)
external
returns (uint256 assetsAfterFee_);
function getWithdrawFee(uint256 _amount) external view returns (uint256 amount_);
function exchangePrice() external view returns (uint256);
function revenueExchangePrice() external view returns (uint256);
function revenue() external view returns (uint256);
function lastExchangePrice() external view returns (uint256);
function getPrecison() external view returns (uint256);
function optionalDeposit(address _token, uint256 _assets, address _receiver, address _referral, bytes memory _swapData, uint256 _swapGetMin)
external
returns (uint256 shares_);
}
"
},
"src/main/libraries/Errors.sol": {
"content": "// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.25;
library Errors {
// Revert Errors:
error CallerNotOperator(); // 0xa5523ee5
error CallerNotRebalancer(); // 0xbd72e291
error CallerNotVault(); // 0xedd7338f
error CallerNotMinter(); // 0x5eee367a
error CallerNotWhiteList(); // 0xf37be7b6
error DepositAmountTooSmall(); // 0x67627d07
error ExitFeeRateTooHigh(); // 0xf4d1caab
error ExceededMaxDeposit(); // 0x3bc9ae09
error FlashloanInProgress(); // 0x772ac4e8
error IncorrectState(); // 0x508c9390
error InfoExpired(); // 0x4ddf4a65
error InvalidAccount(); // 0x6d187b28
error InvalidAdapter(); // 0xfbf66df1
error InvalidAdmin(); // 0xb5eba9f0
error InvalidAsset(); // 0xc891add2
error InvalidCaller(); // 0x48f5c3ed
error InvalidClaimTime(); // 0x1221b97b
error InvalidFeeReceiver(); // 0xd200485c
error InvalidFlashloanCall(); // 0xd2208d52
error InvalidFlashloanHelper(); // 0x8690f016
error InvalidFlashloanProvider(); // 0xb6b48551
error InvalidGasLimit(); // 0x98bdb2e0
error InvalidInitiator(); // 0xbfda1f28
error InvalidLength(); // 0x947d5a84
error InvalidLimit(); // 0xe55fb509
error InvalidManagementFeeClaimPeriod(); // 0x4022e4f6
error InvalidManagementFeeRate(); // 0x09aa66eb
error InvalidMarketCapacity(); // 0xc9034604
error InvalidNetAssets(); // 0x6da79d69
error InvalidNewOperator(); // 0xba0cdec5
error InvalidOperator(); // 0xccea9e6f
error InvalidOracle(); // 0x9589a27d
error InvalidRebalancer(); // 0xff288a8e
error InvalidRedeemOperator(); // 0xd214a597
error InvalidSafeProtocolRatio(); // 0x7c6b23d6
error InvalidShares(); // 0x6edcc523
error InvalidTarget(); // 0x82d5d76a
error InvalidToken(); // 0xc1ab6dc1
error InvalidTokenId(); // 0x3f6cc768
error InvalidUnderlyingToken(); // 0x2fb86f96
error InvalidVault(); // 0xd03a6320
error InvalidWithdrawalUser(); // 0x36c17319
error ManagementFeeRateTooHigh(); // 0x09aa66eb
error ManagementFeeClaimPeriodTooShort(); // 0x4022e4f6
error MarketCapacityTooLow(); // 0xc9034604
error MintingInProgress(); // 0x5067ce25
error NoMintRequest(); // 0x016df84c
error NoRedeemRequest(); // 0x4ef1d5c5
error NotSupportedYet(); // 0xfb89ba2a
error PriceNotUpdated(); // 0x1f4bcb2b
error PriceUpdatePeriodTooLong(); // 0xe88d3ecb
error RatioOutOfRange(); // 0x9179cbfa
error RedeemingInProgress(); // 0x24f44227
error RevenueFeeRateTooHigh(); // 0x0674143f
error UnSupportedOperation(); // 0xe9ec8129
error UnsupportedToken(); // 0x6a172882
error WithdrawZero(); // 0x7ea773a9
error DepositHalted(); // 0x3ddeeb34
// for 1inch swap
error OneInchInvalidReceiver(); // 0xd540519e
error OneInchInvalidToken(); // 0x8e7ad912
error OneInchInvalidInputAmount(); // 0x672b500f
error OneInchInvalidFunctionSignature(); // 0x247f51aa
error OneInchUnexpectedSpentAmount(); // 0x295ada05
error OneInchUnexpectedReturnAmount(); // 0x05e64ca8
error OneInchNotSupported(); // 0x04b2de78
}
"
},
"src/main/common/Constants.sol": {
"content": "// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.25;
abstract contract Constants {
address public constant USCC = 0x14d60E7FDC0D71d8611742720E4C50E7a974020c; // decimals: 6
address public constant USDT = 0xdAC17F958D2ee523a2206206994597C13D831ec7; // decimals: 6
address public constant USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48; // decimals: 6
address public constant USDS = 0xdC035D45d973E3EC169d2276DDab16f1e407384F; // decimals: 18
address public constant DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F; // decimales: 18
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
/**
* @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;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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);
/**
* @dev Returns the value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 value) 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 a `value` amount of tokens 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 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 value) external returns (bool);
}
"
},
"dependencies/@openzeppelin-contracts-5.0.2/token/ERC20/extensions/IERC20Permit.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* ==== Security Considerations
*
* There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
* expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
* considered as an intention to spend the allowance in any specific way. The second is that because permits have
* built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
* take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
* generally recommended is:
*
* ```solidity
* function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
* try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
* doThing(..., value);
* }
*
* function doThing(..., uint256 value) public {
* token.safeTransferFrom(msg.sender, address(this), value);
* ...
* }
* ```
*
* Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
* `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
* {SafeERC20-safeTransferFrom}).
*
* Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
* contracts should have entry points that don't rely on permit.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*
* CAUTION: See Security Considerations above.
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Ever
Submitted on: 2025-10-12 13:20:51
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