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": {
"@openzeppelin/contracts/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);
}
}
"
},
"@openzeppelin/contracts/interfaces/IERC1363.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)
pragma solidity >=0.6.2;
import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";
/**
* @title IERC1363
* @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
*
* Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
* after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
*/
interface IERC1363 is IERC20, IERC165 {
/*
* Note: the ERC-165 identifier for this interface is 0xb0202a11.
* 0xb0202a11 ===
* bytes4(keccak256('transferAndCall(address,uint256)')) ^
* bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
* bytes4(keccak256('approveAndCall(address,uint256)')) ^
* bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
*/
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @param data Additional data with no specified format, sent in call to `spender`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)
pragma solidity >=0.4.16;
import {IERC165} from "../utils/introspection/IERC165.sol";
"
},
"@openzeppelin/contracts/interfaces/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)
pragma solidity >=0.4.16;
import {IERC20} from "../token/ERC20/IERC20.sol";
"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)
pragma solidity >=0.4.16;
/**
* @dev Interface of the ERC-20 standard as defined in the ERC.
*/
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);
}
"
},
"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC-20 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 {
/**
* @dev An operation with an ERC-20 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 Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
*/
function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
}
/**
* @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
*/
function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
return _callOptionalReturnBool(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.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
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.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
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.
*
* NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
* only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
* set here.
*/
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 Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
safeTransfer(token, to, value);
} else if (!token.transferAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
* has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferFromAndCallRelaxed(
IERC1363 token,
address from,
address to,
uint256 value,
bytes memory data
) internal {
if (to.code.length == 0) {
safeTransferFrom(token, from, to, value);
} else if (!token.transferFromAndCall(from, to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
* Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
* once without retrying, and relies on the returned value to be true.
*
* Reverts if the returned value is other than `true`.
*/
function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
forceApprove(token, to, value);
} else if (!token.approveAndCall(to, value, data)) {
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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
// bubble errors
if iszero(success) {
let ptr := mload(0x40)
returndatacopy(ptr, 0, returndatasize())
revert(ptr, returndatasize())
}
returnSize := returndatasize()
returnValue := mload(0)
}
if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
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 silently catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
bool success;
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
returnSize := returndatasize()
returnValue := mload(0)
}
return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
}
}
"
},
"@openzeppelin/contracts/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;
}
}
"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)
pragma solidity >=0.4.16;
/**
* @dev Interface of the ERC-165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[ERC].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
"
},
"@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)
pragma solidity ^0.8.20;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
* consider using {ReentrancyGuardTransient} instead.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant NOT_ENTERED = 1;
uint256 private constant ENTERED = 2;
uint256 private _status;
/**
* @dev Unauthorized reentrant call.
*/
error ReentrancyGuardReentrantCall();
constructor() {
_status = NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be NOT_ENTERED
if (_status == ENTERED) {
revert ReentrancyGuardReentrantCall();
}
// Any calls to nonReentrant after this point will fail
_status = ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == ENTERED;
}
}
"
},
"@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol": {
"content": "pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
"
},
"@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol": {
"content": "pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
"
},
"@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol": {
"content": "pragma solidity >=0.6.2;
import './IUniswapV2Router01.sol';
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
"
},
"contracts/interfaces/IUnicryptV2Locker.sol": {
"content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.30;
interface IUnicryptV2Locker {
struct TokenLock {
uint256 lockDate; // the date the token was locked
uint256 amount; // the amount of tokens still locked
uint256 initialAmount; // the initial lock amount
uint256 unlockDate; // the date the token can be withdrawn
uint256 lockID; // lockID nonce per uni pair
address owner;
}
function lockLPToken(
address _lpToken,
uint256 _amount,
uint256 _unlock_date,
address payable _referral,
bool _fee_in_eth,
address payable _withdrawer
) external payable;
function withdraw(
address _lpToken,
uint256 _index,
uint256 _lockID,
uint256 _amount
) external;
function relock(
address _lpToken,
uint256 _index,
uint256 _lockID,
uint256 _unlock_date
) external;
function transferLockOwnership(
address _lpToken,
uint256 _index,
uint256 _lockID,
address payable _newOwner
) external;
function getUserNumLocksForToken(
address _user,
address _lpToken
) external view returns (uint256);
function getUserLockForTokenAtIndex(
address _user,
address _lpToken,
uint256 _index
) external view returns (
uint256 lockDate,
uint256 amount,
uint256 initialAmount,
uint256 unlockDate,
uint256 lockID,
address owner
);
function getNumLocksForToken(address _lpToken) external view returns (uint256);
// Fee structure
function gFees() external view returns (
uint256 ethFee,
address secondaryFeeToken,
uint256 secondaryTokenFee,
uint256 secondaryTokenDiscount,
uint256 liquidityFee,
uint256 referralPercent,
address referralToken,
uint256 referralHold,
uint256 referralDiscount
);
}"
},
"contracts/LiquidityManager.sol": {
"content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.30;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "./interfaces/IUnicryptV2Locker.sol";
/**
* @title LiquidityManager
*/
contract LiquidityManager is Ownable, ReentrancyGuard {
using SafeERC20 for IERC20;
struct LPLockInfo {
bool isLocked;
uint256 lockId; // if available from locker
uint256 lockIndex; // index returned by getUserNumLocksForToken - 1
uint256 lockAmount;
uint256 lockDate;
uint256 unlockDate;
address lockOwner;
}
uint256 public constant LOCK_1_MIN = 1 minutes;
uint256 public constant LOCK_5_MINS = 5 minutes;
uint256 public constant LOCK_1_MONTH = 30 days;
uint256 public constant LOCK_6_MONTHS = 180 days;
address public constant DEAD_ADDRESS =
0x000000000000000000000000000000000000dEaD;
IUniswapV2Router02 public router;
IUnicryptV2Locker public unicryptLocker;
// track locks per LP pair (keyed by lpPair address)
mapping(address => LPLockInfo) public lpLockInfoByPair;
// kept for backward compatibility with external callers; prefer using lpPair keyed mapping
// mapping(address => LPLockInfo) public lpLockInfo; // removed to avoid confusion
address public admin;
event LPTokensBurned(address indexed tokenAddress, uint256 lpAmount);
event LPTokensLocked(
address indexed tokenAddress,
uint256 lpAmount,
uint256 unlockTime
);
event LPTokensUnlocked(address indexed tokenAddress, uint256 lpAmount);
event LPLockedWithUnicrypt(
address indexed tokenAddress,
address indexed lpPair,
uint256 amount,
uint256 unlockDate,
uint256 lockId,
uint256 lockIndex
);
event LPUnlockedFromUnicrypt(
address indexed tokenAddress,
address indexed lpPair,
uint256 amount
);
event LiquidityRemoved(uint256 amountA, uint256 amountB);
event AdminChanged(address indexed previousAdmin, address indexed newAdmin);
modifier onlyOwnerOrAdmin() {
require(
msg.sender == owner() || msg.sender == admin,
"Not owner or admin"
);
_;
}
constructor(address _router) Ownable(msg.sender) {
require(_router != address(0), "Router zero");
router = IUniswapV2Router02(_router);
admin = msg.sender;
}
/**
* @notice Set Unicrypt locker address
*/
function setUnicryptLocker(
address _unicryptLocker
) external onlyOwnerOrAdmin {
unicryptLocker = IUnicryptV2Locker(_unicryptLocker);
}
/**
* @notice Set or change admin
*/
function setAdmin(address _admin) external onlyOwner {
emit AdminChanged(admin, _admin);
admin = _admin;
}
/**
* @notice Manage LP stored in this contract according to option.
* @param tokenAddress Token address (for bookkeeping/events)
* @param lpPair LP token pair address
* @param dev Developer address to be set as lock owner on Unicrypt
* @param lpManagementOption Option: 0 burn, 1 lock 1 month, 2 lock 6 months, 3/4 testing short locks
*/
function handleLPManagement(
address tokenAddress,
address lpPair,
address dev,
uint8 lpManagementOption
) external onlyOwnerOrAdmin nonReentrant returns (address lpOwner) {
require(lpPair != address(0), "LP pair zero");
uint256 lpBalance = IERC20(lpPair).balanceOf(address(this));
if (lpBalance == 0) return address(0);
if (lpManagementOption == 0) {
// burn (send to dead address) using safeTransfer
IERC20(lpPair).safeTransfer(DEAD_ADDRESS, lpBalance);
emit LPTokensBurned(tokenAddress, lpBalance);
return DEAD_ADDRESS; // LP tokens burned, owner is dead address
} else if (lpManagementOption == 1) {
_lockLPWithUnicrypt(
tokenAddress,
lpPair,
lpBalance,
dev,
LOCK_1_MONTH
);
return dev; // LP tokens locked, owner is dev
} else if (lpManagementOption == 2) {
_lockLPWithUnicrypt(
tokenAddress,
lpPair,
lpBalance,
dev,
LOCK_6_MONTHS
);
return dev; // LP tokens locked, owner is dev
} else if (lpManagementOption == 3) {
_lockLPWithUnicrypt(
tokenAddress,
lpPair,
lpBalance,
dev,
LOCK_1_MIN
);
return dev; // LP tokens locked for 1 minute (testing)
} else if (lpManagementOption == 4) {
_lockLPWithUnicrypt(
tokenAddress,
lpPair,
lpBalance,
dev,
LOCK_5_MINS
);
return dev; // LP tokens locked for 5 minutes (testing)
} else {
revert("Invalid option");
}
}
/**
* @dev Internal helper to lock LP into Unicrypt. This function does basic checks
* and records lock index and amount. Because different Unicrypt versions have
* different return values, we read user lock count after the call and store index safely.
*/
function _lockLPWithUnicrypt(
address tokenAddress,
address lpPair,
uint256 amount,
address dev,
uint256 lockDuration
) internal {
require(address(unicryptLocker) != address(0), "No locker");
require(amount > 0, "No LP to lock");
require(lpPair != address(0), "LP pair zero");
require(dev != address(0), "Dev zero");
uint256 unlockDate = block.timestamp + lockDuration;
// Approve locker to transfer LP tokens from this contract
IERC20(lpPair).approve(address(unicryptLocker), 0);
IERC20(lpPair).approve(address(unicryptLocker), type(uint256).max);
// Read fee and ensure we have ETH to pay it
(uint256 ethFee, , , , , , , , ) = unicryptLocker.gFees();
require(address(this).balance >= ethFee, "Insufficient ETH for fee");
// Use try/catch to bubble revert reason where possible
try
unicryptLocker.lockLPToken{value: ethFee}(
lpPair,
amount,
unlockDate,
payable(address(0)),
true,
payable(dev)
)
{
// After successful lock we query number of locks for the user to determine index
uint256 userLocks = unicryptLocker.getUserNumLocksForToken(
dev,
lpPair
);
require(userLocks > 0, "No user locks reported");
uint256 lockIndex = userLocks - 1;
// We can't always reliably read lockId from the return value of lockLPToken
// because Unicrypt implementations differ, so we store 0 if not available.
// Consumer can call getLPLockInfoByPair to see recorded unlock date and lockIndex.
lpLockInfoByPair[lpPair] = LPLockInfo({
isLocked: true,
lockId: 0,
lockIndex: lockIndex,
lockAmount: amount,
lockDate: block.timestamp,
unlockDate: unlockDate,
lockOwner: dev
});
emit LPLockedWithUnicrypt(
tokenAddress,
lpPair,
amount,
unlockDate,
0,
lockIndex
);
} catch {
revert("Lock fail");
}
// reset approval to 0 as a best practice
IERC20(lpPair).approve(address(unicryptLocker), 0);
}
/**
* @notice Remove liquidity from a token/WETH pair held by this contract.
* The function checks pair existence and that the LP balance > 0.
*/
function removeLiquidity(
address tokenA,
address tokenB
) external onlyOwnerOrAdmin nonReentrant returns (uint256, uint256) {
address token0 = tokenA;
address token1 = tokenB;
if (tokenA > tokenB) {
token0 = tokenB;
token1 = tokenA;
}
address pair = IUniswapV2Factory(router.factory()).getPair(
token0,
token1
);
require(pair != address(0), "Pair doesn't exist");
uint256 liquidity = IERC20(pair).balanceOf(address(this));
require(liquidity > 0, "No liquidity");
IERC20(pair).approve(address(router), 0);
IERC20(pair).approve(address(router), liquidity);
(uint256 amountA, uint256 amountB) = router.removeLiquidity(
token0,
token1,
liquidity,
0,
0,
address(this),
block.timestamp
);
uint256 amountToken;
uint256 amountETH;
if (token0 == router.WETH()) {
amountETH = amountA;
amountToken = amountB;
} else if (token1 == router.WETH()) {
amountETH = amountB;
amountToken = amountA;
} else {
revert("No WETH pair");
}
emit LiquidityRemoved(amountToken, amountETH);
return (amountToken, amountETH);
}
/**
* @notice Add liquidity (token + ETH) and send LP tokens to lpOwner
*/
function addLiquidity(
address token,
address lpOwner,
uint256 tokenAmount,
uint256 ethAmount
) external payable onlyOwnerOrAdmin nonReentrant returns (uint256 liquidity) {
require(token != address(0), "Token zero");
require(lpOwner != address(0), "LP owner zero");
require(tokenAmount > 0 || ethAmount > 0, "Zero amounts");
IERC20(token).approve(address(router), 0);
IERC20(token).approve(address(router), type(uint256).max);
(, , liquidity) = router.addLiquidityETH{value: ethAmount}(
token,
tokenAmount,
0,
0,
lpOwner,
block.timestamp + 500
);
return liquidity;
}
/**
* @notice Mark LP record as unlocked in internal bookkeeping. IMPORTANT: this does NOT
* automatically withdraw LP from Unicrypt locker. Use Unicrypt UI/contract to withdraw
* the LP tokens and then call this function to update local state. This avoids making
* assumptions about Unicrypt's withdraw function signature in this integrator contract.
*/
function unlockLP(
address tokenAddress,
address lpPair
) external onlyOwnerOrAdmin {
LPLockInfo storage lockInfo = lpLockInfoByPair[lpPair];
require(lockInfo.isLocked, "Not locked");
// simply update local bookkeeping. The actual LP withdrawal must be performed
// by owner/admin using the Unicrypt locker interface (off-chain UI or a custom call).
lockInfo.isLocked = false;
emit LPUnlockedFromUnicrypt(tokenAddress, lpPair, lockInfo.lockAmount);
}
/**
* @notice Get lock info for a given LP pair (preferred over old token-keyed getter)
*/
function getLPLockInfoByPair(
address lpPair
)
external
view
returns (
bool isUnicryptLocked,
uint256 unicryptUnlockDate,
uint256 unicryptLockAmount,
address lockOwner,
uint256 lockIndex
)
{
LPLockInfo storage lockInfo = lpLockInfoByPair[lpPair];
return (
lockInfo.isLocked,
lockInfo.unlockDate,
lockInfo.lockAmount,
lockInfo.lockOwner,
lockInfo.lockIndex
);
}
function withdrawETH(
uint256 amount
) external onlyOwnerOrAdmin nonReentrant {
require(amount <= address(this).balance, "Invalid amt");
(bool success, ) = payable(msg.sender).call{value: amount}("");
require(success, "Transfer fail");
}
function withdrawToken(
address token,
uint256 amount
) external onlyOwnerOrAdmin nonReentrant {
require(token != address(0), "Token zero");
uint256 balance = IERC20(token).balanceOf(address(this));
require(amount <= balance, "Invalid amt");
IERC20(token).safeTransfer(msg.sender, amount);
}
function unicryptLockerAddress() external view returns (address) {
return address(unicryptLocker);
}
receive() external payable {}
}
"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 1
},
"evmVersion": "paris",
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
Submitted on: 2025-09-22 16:26:16
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