ERC-20
Overview
Max Total Supply
35,392.379442 ERC20 ***
Holders
176
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 6 Decimals)
Balance
100.085374 ERC20 ***Value
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Minimal Proxy Contract for 0xa6c1d33837376f600e2f096d70356914255e29e6
Contract Name:
LpToken
Compiler Version
v0.8.9+commit.e5eed63a
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2022-03-15 */ // SPDX-License-Identifier: GPL-3.0-or-later // Sources flattened with hardhat v2.6.1 https://hardhat.org // File @openzeppelin/contracts-upgradeable/token/ERC20/[email protected] // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File @openzeppelin/contracts-upgradeable/token/ERC20/extensions/[email protected] // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20MetadataUpgradeable is IERC20Upgradeable { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File @openzeppelin/contracts-upgradeable/utils/[email protected] // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts-upgradeable/proxy/utils/[email protected] // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } } // File @openzeppelin/contracts-upgradeable/utils/[email protected] // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/token/ERC20/[email protected] // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing { __ERC20_init_unchained(name_, symbol_); } function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, _allowances[owner][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = _allowances[owner][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Spend `amount` form the allowance of `owner` toward `spender`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[45] private __gap; } // File libraries/ScaledMath.sol pragma solidity 0.8.9; /* * @dev To use functions of this contract, at least one of the numbers must * be scaled to `DECIMAL_SCALE`. The result will scaled to `DECIMAL_SCALE` * if both numbers are scaled to `DECIMAL_SCALE`, otherwise to the scale * of the number not scaled by `DECIMAL_SCALE` */ library ScaledMath { // solhint-disable-next-line private-vars-leading-underscore uint256 internal constant DECIMAL_SCALE = 1e18; // solhint-disable-next-line private-vars-leading-underscore uint256 internal constant ONE = 1e18; /** * @notice Performs a multiplication between two scaled numbers */ function scaledMul(uint256 a, uint256 b) internal pure returns (uint256) { return (a * b) / DECIMAL_SCALE; } /** * @notice Performs a division between two scaled numbers */ function scaledDiv(uint256 a, uint256 b) internal pure returns (uint256) { return (a * DECIMAL_SCALE) / b; } /** * @notice Performs a division between two numbers, rounding up the result */ function scaledDivRoundUp(uint256 a, uint256 b) internal pure returns (uint256) { return (a * DECIMAL_SCALE + b - 1) / b; } /** * @notice Performs a division between two numbers, ignoring any scaling and rounding up the result */ function divRoundUp(uint256 a, uint256 b) internal pure returns (uint256) { return (a + b - 1) / b; } } // File interfaces/ILpToken.sol pragma solidity 0.8.9; interface ILpToken is IERC20Upgradeable { function mint(address account, uint256 lpTokens) external; function burn(address account, uint256 burnAmount) external returns (uint256); function burn(uint256 burnAmount) external; function minter() external view returns (address); function initialize( string memory name_, string memory symbol_, uint8 _decimals, address _minter ) external returns (bool); } // File @openzeppelin/contracts/token/ERC20/[email protected] // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File interfaces/IPreparable.sol pragma solidity 0.8.9; interface IPreparable { event ConfigPreparedAddress(bytes32 indexed key, address value, uint256 delay); event ConfigPreparedNumber(bytes32 indexed key, uint256 value, uint256 delay); event ConfigUpdatedAddress(bytes32 indexed key, address oldValue, address newValue); event ConfigUpdatedNumber(bytes32 indexed key, uint256 oldValue, uint256 newValue); event ConfigReset(bytes32 indexed key); } // File interfaces/IStrategy.sol pragma solidity 0.8.9; interface IStrategy { function name() external view returns (string memory); function deposit() external payable returns (bool); function balance() external view returns (uint256); function withdraw(uint256 amount) external returns (bool); function withdrawAll() external returns (uint256); function harvestable() external view returns (uint256); function harvest() external returns (uint256); function strategist() external view returns (address); function shutdown() external returns (bool); function hasPendingFunds() external view returns (bool); } // File interfaces/IVault.sol pragma solidity 0.8.9; /** * @title Interface for a Vault */ interface IVault is IPreparable { event StrategyActivated(address indexed strategy); event StrategyDeactivated(address indexed strategy); /** * @dev 'netProfit' is the profit after all fees have been deducted */ event Harvest(uint256 indexed netProfit, uint256 indexed loss); function initialize( address _pool, uint256 _debtLimit, uint256 _targetAllocation, uint256 _bound ) external; function withdrawFromStrategyWaitingForRemoval(address strategy) external returns (uint256); function deposit() external payable; function withdraw(uint256 amount) external returns (bool); function initializeStrategy(address strategy_) external returns (bool); function withdrawAll() external; function withdrawFromReserve(uint256 amount) external; function getStrategy() external view returns (IStrategy); function getStrategiesWaitingForRemoval() external view returns (address[] memory); function getAllocatedToStrategyWaitingForRemoval(address strategy) external view returns (uint256); function getTotalUnderlying() external view returns (uint256); function getUnderlying() external view returns (address); } // File interfaces/pool/ILiquidityPool.sol pragma solidity 0.8.9; interface ILiquidityPool is IPreparable { event Deposit(address indexed minter, uint256 depositAmount, uint256 mintedLpTokens); event DepositFor( address indexed minter, address indexed mintee, uint256 depositAmount, uint256 mintedLpTokens ); event Redeem(address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens); event LpTokenSet(address indexed lpToken); event StakerVaultSet(address indexed stakerVault); function redeem(uint256 redeemTokens) external returns (uint256); function redeem(uint256 redeemTokens, uint256 minRedeemAmount) external returns (uint256); function calcRedeem(address account, uint256 underlyingAmount) external returns (uint256); function deposit(uint256 mintAmount) external payable returns (uint256); function deposit(uint256 mintAmount, uint256 minTokenAmount) external payable returns (uint256); function depositAndStake(uint256 depositAmount, uint256 minTokenAmount) external payable returns (uint256); function depositFor(address account, uint256 depositAmount) external payable returns (uint256); function depositFor( address account, uint256 depositAmount, uint256 minTokenAmount ) external payable returns (uint256); function unstakeAndRedeem(uint256 redeemLpTokens, uint256 minRedeemAmount) external returns (uint256); function handleLpTokenTransfer( address from, address to, uint256 amount ) external; function executeNewVault() external returns (address); function executeNewMaxWithdrawalFee() external returns (uint256); function executeNewRequiredReserves() external returns (uint256); function executeNewReserveDeviation() external returns (uint256); function setLpToken(address _lpToken) external returns (bool); function setStaker() external returns (bool); function isCapped() external returns (bool); function uncap() external returns (bool); function updateDepositCap(uint256 _depositCap) external returns (bool); function getUnderlying() external view returns (address); function getLpToken() external view returns (address); function getWithdrawalFee(address account, uint256 amount) external view returns (uint256); function getVault() external view returns (IVault); function exchangeRate() external view returns (uint256); } // File libraries/Errors.sol pragma solidity 0.8.9; // solhint-disable private-vars-leading-underscore library Error { string internal constant ADDRESS_WHITELISTED = "address already whitelisted"; string internal constant ADMIN_ALREADY_SET = "admin has already been set once"; string internal constant ADDRESS_NOT_WHITELISTED = "address not whitelisted"; string internal constant ADDRESS_NOT_FOUND = "address not found"; string internal constant CONTRACT_INITIALIZED = "contract can only be initialized once"; string internal constant CONTRACT_PAUSED = "contract is paused"; string internal constant INVALID_AMOUNT = "invalid amount"; string internal constant INVALID_INDEX = "invalid index"; string internal constant INVALID_VALUE = "invalid msg.value"; string internal constant INVALID_SENDER = "invalid msg.sender"; string internal constant INVALID_TOKEN = "token address does not match pool's LP token address"; string internal constant INVALID_DECIMALS = "incorrect number of decimals"; string internal constant INVALID_ARGUMENT = "invalid argument"; string internal constant INVALID_PARAMETER_VALUE = "invalid parameter value attempted"; string internal constant INVALID_IMPLEMENTATION = "invalid pool implementation for given coin"; string internal constant INVALID_POOL_IMPLEMENTATION = "invalid pool implementation for given coin"; string internal constant INVALID_LP_TOKEN_IMPLEMENTATION = "invalid LP Token implementation for given coin"; string internal constant INVALID_VAULT_IMPLEMENTATION = "invalid vault implementation for given coin"; string internal constant INVALID_STAKER_VAULT_IMPLEMENTATION = "invalid stakerVault implementation for given coin"; string internal constant INSUFFICIENT_BALANCE = "insufficient balance"; string internal constant ADDRESS_ALREADY_SET = "Address is already set"; string internal constant INSUFFICIENT_STRATEGY_BALANCE = "insufficient strategy balance"; string internal constant INSUFFICIENT_FUNDS_RECEIVED = "insufficient funds received"; string internal constant ADDRESS_DOES_NOT_EXIST = "address does not exist"; string internal constant ADDRESS_FROZEN = "address is frozen"; string internal constant ROLE_EXISTS = "role already exists"; string internal constant CANNOT_REVOKE_ROLE = "cannot revoke role"; string internal constant UNAUTHORIZED_ACCESS = "unauthorized access"; string internal constant SAME_ADDRESS_NOT_ALLOWED = "same address not allowed"; string internal constant SELF_TRANSFER_NOT_ALLOWED = "self-transfer not allowed"; string internal constant ZERO_ADDRESS_NOT_ALLOWED = "zero address not allowed"; string internal constant ZERO_TRANSFER_NOT_ALLOWED = "zero transfer not allowed"; string internal constant THRESHOLD_TOO_HIGH = "threshold is too high, must be under 10"; string internal constant INSUFFICIENT_THRESHOLD = "insufficient threshold"; string internal constant NO_POSITION_EXISTS = "no position exists"; string internal constant POSITION_ALREADY_EXISTS = "position already exists"; string internal constant PROTOCOL_NOT_FOUND = "protocol not found"; string internal constant TOP_UP_FAILED = "top up failed"; string internal constant SWAP_PATH_NOT_FOUND = "swap path not found"; string internal constant UNDERLYING_NOT_SUPPORTED = "underlying token not supported"; string internal constant NOT_ENOUGH_FUNDS_WITHDRAWN = "not enough funds were withdrawn from the pool"; string internal constant FAILED_TRANSFER = "transfer failed"; string internal constant FAILED_MINT = "mint failed"; string internal constant FAILED_REPAY_BORROW = "repay borrow failed"; string internal constant FAILED_METHOD_CALL = "method call failed"; string internal constant NOTHING_TO_CLAIM = "there is no claimable balance"; string internal constant ERC20_BALANCE_EXCEEDED = "ERC20: transfer amount exceeds balance"; string internal constant INVALID_MINTER = "the minter address of the LP token and the pool address do not match"; string internal constant STAKER_VAULT_EXISTS = "a staker vault already exists for the token"; string internal constant DEADLINE_NOT_ZERO = "deadline must be 0"; string internal constant DEADLINE_NOT_SET = "deadline is 0"; string internal constant DEADLINE_NOT_REACHED = "deadline has not been reached yet"; string internal constant DELAY_TOO_SHORT = "delay be at least 3 days"; string internal constant INSUFFICIENT_UPDATE_BALANCE = "insufficient funds for updating the position"; string internal constant SAME_AS_CURRENT = "value must be different to existing value"; string internal constant NOT_CAPPED = "the pool is not currently capped"; string internal constant ALREADY_CAPPED = "the pool is already capped"; string internal constant EXCEEDS_DEPOSIT_CAP = "deposit exceeds deposit cap"; string internal constant VALUE_TOO_LOW_FOR_GAS = "value too low to cover gas"; string internal constant NOT_ENOUGH_FUNDS = "not enough funds to withdraw"; string internal constant ESTIMATED_GAS_TOO_HIGH = "too much ETH will be used for gas"; string internal constant DEPOSIT_FAILED = "deposit failed"; string internal constant GAS_TOO_HIGH = "too much ETH used for gas"; string internal constant GAS_BANK_BALANCE_TOO_LOW = "not enough ETH in gas bank to cover gas"; string internal constant INVALID_TOKEN_TO_ADD = "Invalid token to add"; string internal constant INVALID_TOKEN_TO_REMOVE = "token can not be removed"; string internal constant TIME_DELAY_NOT_EXPIRED = "time delay not expired yet"; string internal constant UNDERLYING_NOT_WITHDRAWABLE = "pool does not support additional underlying coins to be withdrawn"; string internal constant STRATEGY_SHUT_DOWN = "Strategy is shut down"; string internal constant STRATEGY_DOES_NOT_EXIST = "Strategy does not exist"; string internal constant UNSUPPORTED_UNDERLYING = "Underlying not supported"; string internal constant NO_DEX_SET = "no dex has been set for token"; string internal constant INVALID_TOKEN_PAIR = "invalid token pair"; string internal constant TOKEN_NOT_USABLE = "token not usable for the specific action"; string internal constant ADDRESS_NOT_ACTION = "address is not registered action"; string internal constant INVALID_SLIPPAGE_TOLERANCE = "Invalid slippage tolerance"; string internal constant POOL_NOT_PAUSED = "Pool must be paused to withdraw from reserve"; string internal constant INTERACTION_LIMIT = "Max of one deposit and withdraw per block"; string internal constant GAUGE_EXISTS = "Gauge already exists"; string internal constant GAUGE_DOES_NOT_EXIST = "Gauge does not exist"; string internal constant EXCEEDS_MAX_BOOST = "Not allowed to exceed maximum boost on Convex"; string internal constant PREPARED_WITHDRAWAL = "Cannot relock funds when withdrawal is being prepared"; string internal constant ASSET_NOT_SUPPORTED = "Asset not supported"; string internal constant STALE_PRICE = "Price is stale"; string internal constant NEGATIVE_PRICE = "Price is negative"; string internal constant NOT_ENOUGH_BKD_STAKED = "Not enough BKD tokens staked"; string internal constant RESERVE_ACCESS_EXCEEDED = "Reserve access exceeded"; } // File contracts/LpToken.sol pragma solidity 0.8.9; contract LpToken is ILpToken, ERC20Upgradeable { using ScaledMath for uint256; uint8 private _decimals; address public override minter; /** * @notice Make a function only callable by the minter contract. * @dev Fails if msg.sender is not the minter. */ modifier onlyMinter() { require(msg.sender == minter, Error.UNAUTHORIZED_ACCESS); _; } constructor() ERC20Upgradeable() {} function initialize( string memory name_, string memory symbol_, uint8 decimals_, address _minter ) external override initializer returns (bool) { require(_minter != address(0), Error.ZERO_ADDRESS_NOT_ALLOWED); __ERC20_init(name_, symbol_); _decimals = decimals_; minter = _minter; return true; } /** * @notice Mint tokens. * @param account Account from which tokens should be burned. * @param amount Amount of tokens to mint. */ function mint(address account, uint256 amount) external override onlyMinter { _mint(account, amount); } /** * @notice Burns tokens of msg.sender. * @param amount Amount of tokens to burn. */ function burn(uint256 amount) external override { _burn(msg.sender, amount); } /** * @notice Burn tokens. * @param owner Account from which tokens should be burned. * @param burnAmount Amount of tokens to burn. * @return Aamount of tokens burned. */ function burn(address owner, uint256 burnAmount) external override onlyMinter returns (uint256) { _burn(owner, burnAmount); return burnAmount; } function decimals() public view virtual override returns (uint8) { return _decimals; } /** * @dev We notify that LP tokens have been transfered * this is currently used to keep track of the withdrawal fees */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual override { if (amount > 0) ILiquidityPool(minter).handleLpTokenTransfer(from, to, amount); // add check to not break 0 transfers } }
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"burnAmount","type":"uint256"}],"name":"burn","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"uint8","name":"decimals_","type":"uint8"},{"internalType":"address","name":"_minter","type":"address"}],"name":"initialize","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"minter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
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