Contract Name:
NFTXInventoryStaking
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./util/PausableUpgradeable.sol";
import "./util/SafeERC20Upgradeable.sol";
import "./util/Create2.sol";
import "./proxy/UpgradeableBeacon.sol";
import "./proxy/Create2BeaconProxy.sol";
import "./token/XTokenUpgradeable.sol";
import "./interface/INFTXInventoryStaking.sol";
import "./interface/INFTXVaultFactory.sol";
import "./interface/ITimelockExcludeList.sol";
// Author: 0xKiwi.
// Pausing codes for inventory staking are:
// 10: Deposit
contract NFTXInventoryStaking is
PausableUpgradeable,
UpgradeableBeacon,
INFTXInventoryStaking
{
using SafeERC20Upgradeable for IERC20Upgradeable;
// Small locktime to prevent flash deposits.
uint256 internal constant DEFAULT_LOCKTIME = 2;
// bytes internal constant beaconCode = type(Create2BeaconProxy).creationCode;
bytes internal constant beaconCode =
hex"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";
// this code is used to determine xToken address while calling `directWithdraw()`
bytes internal constant duplicateBeaconCode =
hex"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";
INFTXVaultFactory public override nftxVaultFactory;
uint256 public inventoryLockTimeErc20;
ITimelockExcludeList public timelockExcludeList;
event XTokenCreated(uint256 vaultId, address baseToken, address xToken);
event Deposit(
uint256 vaultId,
uint256 baseTokenAmount,
uint256 xTokenAmount,
uint256 timelockUntil,
address sender
);
event Withdraw(
uint256 vaultId,
uint256 baseTokenAmount,
uint256 xTokenAmount,
address sender
);
event DirectWithdraw(
address xToken,
uint256 baseTokenAmount,
uint256 xTokenAmount,
address sender
);
event FeesReceived(uint256 vaultId, uint256 amount);
function __NFTXInventoryStaking_init(address _nftxVaultFactory)
external
virtual
override
initializer
{
__Ownable_init();
nftxVaultFactory = INFTXVaultFactory(_nftxVaultFactory);
address xTokenImpl = address(new XTokenUpgradeable());
__UpgradeableBeacon__init(xTokenImpl);
}
modifier onlyAdmin() {
require(
msg.sender == owner() ||
msg.sender == nftxVaultFactory.feeDistributor(),
"LPStaking: Not authorized"
);
_;
}
function setTimelockExcludeList(address addr) external onlyOwner {
timelockExcludeList = ITimelockExcludeList(addr);
}
function setInventoryLockTimeErc20(uint256 time) external onlyOwner {
require(time <= 14 days, "Lock too long");
inventoryLockTimeErc20 = time;
}
function isAddressTimelockExcluded(address addr, uint256 vaultId)
public
view
returns (bool)
{
if (address(timelockExcludeList) == address(0)) {
return false;
} else {
return timelockExcludeList.isExcluded(addr, vaultId);
}
}
function deployXTokenForVault(uint256 vaultId) public virtual override {
address baseToken = nftxVaultFactory.vault(vaultId);
address deployedXToken = xTokenAddr(address(baseToken));
if (isContract(deployedXToken)) {
return;
}
address xToken = _deployXToken(baseToken);
emit XTokenCreated(vaultId, baseToken, xToken);
}
function receiveRewards(uint256 vaultId, uint256 amount)
external
virtual
override
onlyAdmin
returns (bool)
{
address baseToken = nftxVaultFactory.vault(vaultId);
address deployedXToken = xTokenAddr(address(baseToken));
// Don't distribute rewards unless there are people to distribute to.
// Also added here if the distribution token is not deployed, just forfeit rewards for now.
if (
!isContract(deployedXToken) ||
XTokenUpgradeable(deployedXToken).totalSupply() == 0
) {
return false;
}
// We "pull" to the dividend tokens so the fee distributor only needs to approve this contract.
IERC20Upgradeable(baseToken).safeTransferFrom(
msg.sender,
deployedXToken,
amount
);
emit FeesReceived(vaultId, amount);
return true;
}
// Enter staking. Staking, get minted shares and
// locks base tokens and mints xTokens.
function deposit(uint256 vaultId, uint256 _amount)
external
virtual
override
{
onlyOwnerIfPaused(10);
uint256 timelockTime = isAddressTimelockExcluded(msg.sender, vaultId)
? 0
: inventoryLockTimeErc20;
(
IERC20Upgradeable baseToken,
XTokenUpgradeable xToken,
uint256 xTokensMinted
) = _timelockMintFor(vaultId, msg.sender, _amount, timelockTime);
// Lock the base token in the xtoken contract
baseToken.safeTransferFrom(msg.sender, address(xToken), _amount);
emit Deposit(vaultId, _amount, xTokensMinted, timelockTime, msg.sender);
}
function timelockMintFor(
uint256 vaultId,
uint256 amount,
address to,
uint256 timelockLength
) external virtual override returns (uint256) {
onlyOwnerIfPaused(10);
require(nftxVaultFactory.zapContracts(msg.sender), "Not staking zap");
require(
nftxVaultFactory.excludedFromFees(msg.sender),
"Not fee excluded"
);
(, , uint256 xTokensMinted) = _timelockMintFor(
vaultId,
to,
amount,
timelockLength
);
emit Deposit(vaultId, amount, xTokensMinted, timelockLength, to);
return xTokensMinted;
}
// Leave the bar. Claim back your tokens.
// Unlocks the staked + gained tokens and burns xTokens.
function withdraw(uint256 vaultId, uint256 _share)
external
virtual
override
{
IERC20Upgradeable baseToken = IERC20Upgradeable(
nftxVaultFactory.vault(vaultId)
);
XTokenUpgradeable xToken = XTokenUpgradeable(
xTokenAddr(address(baseToken))
);
uint256 baseTokensRedeemed = xToken.burnXTokens(msg.sender, _share);
emit Withdraw(vaultId, baseTokensRedeemed, _share, msg.sender);
}
function directWithdraw(uint256 vaultId, uint256 _share) external {
IERC20Upgradeable baseToken = IERC20Upgradeable(
nftxVaultFactory.vault(vaultId)
);
bytes32 salt = keccak256(abi.encodePacked(baseToken));
address xToken = Create2.computeAddress(
salt,
keccak256(duplicateBeaconCode)
);
uint256 baseTokensRedeemed = XTokenUpgradeable(xToken).burnXTokens(
msg.sender,
_share
);
emit DirectWithdraw(xToken, baseTokensRedeemed, _share, msg.sender);
}
function xTokenShareValue(uint256 vaultId)
external
view
virtual
override
returns (uint256)
{
IERC20Upgradeable baseToken = IERC20Upgradeable(
nftxVaultFactory.vault(vaultId)
);
XTokenUpgradeable xToken = XTokenUpgradeable(
xTokenAddr(address(baseToken))
);
require(address(xToken) != address(0), "XToken not deployed");
uint256 multiplier = 10**18;
return
xToken.totalSupply() > 0
? (multiplier * baseToken.balanceOf(address(xToken))) /
xToken.totalSupply()
: multiplier;
}
function timelockUntil(uint256 vaultId, address who)
external
view
returns (uint256)
{
XTokenUpgradeable xToken = XTokenUpgradeable(vaultXToken(vaultId));
return xToken.timelockUntil(who);
}
function balanceOf(uint256 vaultId, address who)
external
view
returns (uint256)
{
XTokenUpgradeable xToken = XTokenUpgradeable(vaultXToken(vaultId));
return xToken.balanceOf(who);
}
// Note: this function does not guarantee the token is deployed, we leave that check to elsewhere to save gas.
function xTokenAddr(address baseToken)
public
view
virtual
override
returns (address)
{
bytes32 salt = keccak256(abi.encodePacked(baseToken));
address tokenAddr = Create2.computeAddress(salt, keccak256(beaconCode));
return tokenAddr;
}
function vaultXToken(uint256 vaultId)
public
view
virtual
override
returns (address)
{
address baseToken = nftxVaultFactory.vault(vaultId);
address xToken = xTokenAddr(baseToken);
require(isContract(xToken), "XToken not deployed");
return xToken;
}
function _timelockMintFor(
uint256 vaultId,
address account,
uint256 _amount,
uint256 timelockLength
)
internal
returns (
IERC20Upgradeable,
XTokenUpgradeable,
uint256
)
{
deployXTokenForVault(vaultId);
IERC20Upgradeable baseToken = IERC20Upgradeable(
nftxVaultFactory.vault(vaultId)
);
XTokenUpgradeable xToken = XTokenUpgradeable(
(xTokenAddr(address(baseToken)))
);
uint256 xTokensMinted = xToken.mintXTokens(
account,
_amount,
timelockLength
);
return (baseToken, xToken, xTokensMinted);
}
function _deployXToken(address baseToken) internal returns (address) {
string memory symbol = IERC20Metadata(baseToken).symbol();
symbol = string(abi.encodePacked("x", symbol));
bytes32 salt = keccak256(abi.encodePacked(baseToken));
address deployedXToken = Create2.deploy(0, salt, beaconCode);
XTokenUpgradeable(deployedXToken).__XToken_init(
baseToken,
symbol,
symbol
);
return deployedXToken;
}
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size != 0;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./INFTXVaultFactory.sol";
interface INFTXInventoryStaking {
function nftxVaultFactory() external view returns (INFTXVaultFactory);
function vaultXToken(uint256 vaultId) external view returns (address);
function xTokenAddr(address baseToken) external view returns (address);
function xTokenShareValue(uint256 vaultId) external view returns (uint256);
function __NFTXInventoryStaking_init(address nftxFactory) external;
function deployXTokenForVault(uint256 vaultId) external;
function receiveRewards(uint256 vaultId, uint256 amount)
external
returns (bool);
function timelockMintFor(
uint256 vaultId,
uint256 amount,
address to,
uint256 timelockLength
) external returns (uint256);
function deposit(uint256 vaultId, uint256 _amount) external;
function withdraw(uint256 vaultId, uint256 _share) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/IBeacon.sol";
interface INFTXVaultFactory is IBeacon {
// Read functions.
function numVaults() external view returns (uint256);
function zapContract() external view returns (address);
function zapContracts(address addr) external view returns (bool);
function feeDistributor() external view returns (address);
function eligibilityManager() external view returns (address);
function vault(uint256 vaultId) external view returns (address);
function allVaults() external view returns (address[] memory);
function vaultsForAsset(address asset)
external
view
returns (address[] memory);
function isLocked(uint256 id) external view returns (bool);
function excludedFromFees(address addr) external view returns (bool);
function factoryMintFee() external view returns (uint64);
function factoryRandomRedeemFee() external view returns (uint64);
function factoryTargetRedeemFee() external view returns (uint64);
function factoryRandomSwapFee() external view returns (uint64);
function factoryTargetSwapFee() external view returns (uint64);
function vaultFees(uint256 vaultId)
external
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256
);
event NewFeeDistributor(address oldDistributor, address newDistributor);
event NewZapContract(address oldZap, address newZap);
event UpdatedZapContract(address zap, bool excluded);
event FeeExclusion(address feeExcluded, bool excluded);
event NewEligibilityManager(address oldEligManager, address newEligManager);
event NewVault(
uint256 indexed vaultId,
address vaultAddress,
address assetAddress
);
event UpdateVaultFees(
uint256 vaultId,
uint256 mintFee,
uint256 randomRedeemFee,
uint256 targetRedeemFee,
uint256 randomSwapFee,
uint256 targetSwapFee
);
event DisableVaultFees(uint256 vaultId);
event UpdateFactoryFees(
uint256 mintFee,
uint256 randomRedeemFee,
uint256 targetRedeemFee,
uint256 randomSwapFee,
uint256 targetSwapFee
);
// Write functions.
function __NFTXVaultFactory_init(
address _vaultImpl,
address _feeDistributor
) external;
function createVault(
string calldata name,
string calldata symbol,
address _assetAddress,
bool is1155,
bool allowAllItems
) external returns (uint256);
function setFeeDistributor(address _feeDistributor) external;
function setEligibilityManager(address _eligibilityManager) external;
function setZapContract(address _zapContract, bool _excluded) external;
function setFeeExclusion(address _excludedAddr, bool excluded) external;
function setFactoryFees(
uint256 mintFee,
uint256 randomRedeemFee,
uint256 targetRedeemFee,
uint256 randomSwapFee,
uint256 targetSwapFee
) external;
function setVaultFees(
uint256 vaultId,
uint256 mintFee,
uint256 randomRedeemFee,
uint256 targetRedeemFee,
uint256 randomSwapFee,
uint256 targetSwapFee
) external;
function disableVaultFees(uint256 vaultId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ITimelockExcludeList {
function isExcluded(address addr, uint256 vaultId)
external
view
returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../util/Address.sol";
import "./Proxy.sol";
import "./IBeacon.sol";
/**
* @dev This contract implements a proxy that gets the implementation address for each call from a {UpgradeableBeacon}.
* Slightly modified to allow using beacon proxies with Create2.
*
* The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
* conflict with the storage layout of the implementation behind the proxy.
*
* _Available since v3.4._
*/
contract Create2BeaconProxy is Proxy {
/**
* @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
* This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
*/
bytes32 private constant _BEACON_SLOT =
0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
/**
* @dev Initializes the proxy with `beacon`.
*
* If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
* will typically be an encoded function call, and allows initializating the storage of the proxy like a Solidity
* constructor.
*
* Requirements:
*
* - `beacon` must be a contract with the interface {IBeacon}.
*/
constructor() payable {
assert(
_BEACON_SLOT ==
bytes32(uint256(keccak256("eip1967.proxy.beacon")) - 1)
);
_setBeacon(msg.sender, "");
}
/**
* @dev Returns the current beacon address.
*/
function _beacon() internal view virtual returns (address beacon) {
bytes32 slot = _BEACON_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
beacon := sload(slot)
}
}
/**
* @dev Returns the current implementation address of the associated beacon.
*/
function _implementation()
internal
view
virtual
override
returns (address)
{
return IBeacon(_beacon()).childImplementation();
}
/**
* @dev Changes the proxy to use a new beacon.
*
* If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
*
* Requirements:
*
* - `beacon` must be a contract.
* - The implementation returned by `beacon` must be a contract.
*/
function _setBeacon(address beacon, bytes memory data) internal virtual {
require(
Address.isContract(beacon),
"BeaconProxy: beacon is not a contract"
);
require(
Address.isContract(IBeacon(beacon).childImplementation()),
"BeaconProxy: beacon implementation is not a contract"
);
bytes32 slot = _BEACON_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, beacon)
}
if (data.length > 0) {
Address.functionDelegateCall(
_implementation(),
data,
"BeaconProxy: function call failed"
);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeacon {
/**
* @dev Must return an address that can be used as a delegate call target.
*
* {BeaconProxy} will check that this address is a contract.
*/
function childImplementation() external view returns (address);
function upgradeChildTo(address newImplementation) external;
}
// SPDX-License-Identifier: MIT
// solhint-disable-next-line compiler-version
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 a proxied contract can't have 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.
*/
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() {
require(
_initializing || !_initialized,
"Initializable: contract is already initialized"
);
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
// solhint-disable-next-line no-inline-assembly
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(
gas(),
implementation,
0,
calldatasize(),
0,
0
)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback() external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive() external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IBeacon.sol";
import "../util/Address.sol";
import "../util/OwnableUpgradeable.sol";
/**
* @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their
* implementation contract, which is where they will delegate all function calls.
*
* An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon.
*/
contract UpgradeableBeacon is IBeacon, OwnableUpgradeable {
address private _childImplementation;
/**
* @dev Emitted when the child implementation returned by the beacon is changed.
*/
event Upgraded(address indexed childImplementation);
/**
* @dev Sets the address of the initial implementation, and the deployer account as the owner who can upgrade the
* beacon.
*/
function __UpgradeableBeacon__init(address childImplementation_)
public
initializer
{
_setChildImplementation(childImplementation_);
}
/**
* @dev Returns the current child implementation address.
*/
function childImplementation()
public
view
virtual
override
returns (address)
{
return _childImplementation;
}
/**
* @dev Upgrades the beacon to a new implementation.
*
* Emits an {Upgraded} event.
*
* Requirements:
*
* - msg.sender must be the owner of the contract.
* - `newChildImplementation` must be a contract.
*/
function upgradeChildTo(address newChildImplementation)
public
virtual
override
onlyOwner
{
_setChildImplementation(newChildImplementation);
}
/**
* @dev Sets the implementation contract address for this beacon
*
* Requirements:
*
* - `newChildImplementation` must be a contract.
*/
function _setChildImplementation(address newChildImplementation) private {
require(
Address.isContract(newChildImplementation),
"UpgradeableBeacon: child implementation is not a contract"
);
_childImplementation = newChildImplementation;
emit Upgraded(newChildImplementation);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/Initializable.sol";
import "../util/ContextUpgradeable.sol";
import "./IERC20Upgradeable.sol";
import "./IERC20Metadata.sol";
/**
* @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 guidelines: functions revert instead
* of 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,
IERC20Metadata
{
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
initializer
{
__Context_init_unchained();
__ERC20_init_unchained(name_, symbol_);
}
function __ERC20_init_unchained(string memory name_, string memory symbol_)
internal
initializer
{
_name = name_;
_symbol = symbol_;
}
function _setMetadata(string memory name_, string memory symbol_) internal {
_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:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, 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}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), 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}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(
currentAllowance >= amount,
"ERC20: transfer amount exceeds allowance"
);
_approve(sender, _msgSender(), currentAllowance - 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)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][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)
{
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(
currentAllowance >= subtractedValue,
"ERC20: decreased allowance below zero"
);
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is 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:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(
senderBalance >= amount,
"ERC20: transfer amount exceeds balance"
);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, 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);
}
/**
* @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");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(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 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 to 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 {}
uint256[45] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20Upgradeable.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata 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);
}
// SPDX-License-Identifier: MIT
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 `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
address recipient,
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
);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../util/OwnableUpgradeable.sol";
import "../util/SafeERC20Upgradeable.sol";
import "../token/ERC20Upgradeable.sol";
// XTokens let uou come in with some vault tokens, and leave with more! The longer you stay, the more vault tokens you get.
//
// This contract handles swapping to and from xSushi, SushiSwap's staking token.
contract XTokenUpgradeable is OwnableUpgradeable, ERC20Upgradeable {
using SafeERC20Upgradeable for IERC20Upgradeable;
uint256 internal constant MAX_TIMELOCK = 2592000;
IERC20Upgradeable public baseToken;
mapping(address => uint256) internal timelock;
event Timelocked(address user, uint256 until);
function __XToken_init(
address _baseToken,
string memory name,
string memory symbol
) public initializer {
__Ownable_init();
// string memory _name = INFTXInventoryStaking(msg.sender).nftxVaultFactory().vault();
__ERC20_init(name, symbol);
baseToken = IERC20Upgradeable(_baseToken);
}
// Needs to be called BEFORE new base tokens are deposited.
function mintXTokens(
address account,
uint256 _amount,
uint256 timelockLength
) external onlyOwner returns (uint256) {
// Gets the amount of Base Token locked in the contract
uint256 totalBaseToken = baseToken.balanceOf(address(this));
// Gets the amount of xTokens in existence
uint256 totalShares = totalSupply();
// If no xTokens exist, mint it 1:1 to the amount put in
if (totalShares == 0 || totalBaseToken == 0) {
_timelockMint(account, _amount, timelockLength);
return _amount;
}
// Calculate and mint the amount of xTokens the base tokens are worth. The ratio will change overtime, as xTokens are burned/minted and base tokens deposited + gained from fees / withdrawn.
else {
uint256 what = (_amount * totalShares) / totalBaseToken;
_timelockMint(account, what, timelockLength);
return what;
}
}
function burnXTokens(address who, uint256 _share)
external
onlyOwner
returns (uint256)
{
// Gets the amount of xToken in existence
uint256 totalShares = totalSupply();
// Calculates the amount of base tokens the xToken is worth
uint256 what = (_share * baseToken.balanceOf(address(this))) /
totalShares;
_burn(who, _share);
baseToken.safeTransfer(who, what);
return what;
}
function timelockAccount(address account, uint256 timelockLength)
public
virtual
onlyOwner
{
require(timelockLength < MAX_TIMELOCK, "Too long lock");
uint256 timelockFinish = block.timestamp + timelockLength;
if (timelockFinish > timelock[account]) {
timelock[account] = timelockFinish;
emit Timelocked(account, timelockFinish);
}
}
function _burn(address who, uint256 amount) internal override {
require(block.timestamp > timelock[who], "User locked");
super._burn(who, amount);
}
function timelockUntil(address account) public view returns (uint256) {
return timelock[account];
}
function _timelockMint(
address account,
uint256 amount,
uint256 timelockLength
) internal virtual {
timelockAccount(account, timelockLength);
_mint(account, amount);
}
function _transfer(
address from,
address to,
uint256 value
) internal override {
require(block.timestamp > timelock[from], "User locked");
super._transfer(from, to, value);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 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"
);
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) private 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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/Initializable.sol";
/*
* @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 initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer.
* `CREATE2` can be used to compute in advance the address where a smart
* contract will be deployed, which allows for interesting new mechanisms known
* as 'counterfactual interactions'.
*
* See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more
* information.
*/
library Create2 {
/**
* @dev Deploys a contract using `CREATE2`. The address where the contract
* will be deployed can be known in advance via {computeAddress}.
*
* The bytecode for a contract can be obtained from Solidity with
* `type(contractName).creationCode`.
*
* Requirements:
*
* - `bytecode` must not be empty.
* - `salt` must have not been used for `bytecode` already.
* - the factory must have a balance of at least `amount`.
* - if `amount` is non-zero, `bytecode` must have a `payable` constructor.
*/
function deploy(
uint256 amount,
bytes32 salt,
bytes memory bytecode
) internal returns (address) {
address addr;
require(
address(this).balance >= amount,
"Create2: insufficient balance"
);
require(bytecode.length != 0, "Create2: bytecode length is zero");
// solhint-disable-next-line no-inline-assembly
assembly {
addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt)
}
require(addr != address(0), "Create2: Failed on deploy");
return addr;
}
/**
* @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the
* `bytecodeHash` or `salt` will result in a new destination address.
*/
function computeAddress(bytes32 salt, bytes32 bytecodeHash)
internal
view
returns (address)
{
return computeAddress(salt, bytecodeHash, address(this));
}
/**
* @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at
* `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}.
*/
function computeAddress(
bytes32 salt,
bytes32 bytecodeHash,
address deployer
) internal pure returns (address) {
bytes32 _data = keccak256(
abi.encodePacked(bytes1(0xff), deployer, salt, bytecodeHash)
);
return address(uint160(uint256(_data)));
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/Initializable.sol";
import "./ContextUpgradeable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./OwnableUpgradeable.sol";
contract PausableUpgradeable is OwnableUpgradeable {
function __Pausable_init() internal initializer {
__Ownable_init();
}
event SetPaused(uint256 lockId, bool paused);
event SetIsGuardian(address addr, bool isGuardian);
mapping(address => bool) public isGuardian;
mapping(uint256 => bool) public isPaused;
// 0 : createVault
// 1 : mint
// 2 : redeem
// 3 : swap
// 4 : flashloan
function onlyOwnerIfPaused(uint256 lockId) public view virtual {
require(!isPaused[lockId] || msg.sender == owner(), "Paused");
}
function unpause(uint256 lockId) public virtual onlyOwner {
isPaused[lockId] = false;
emit SetPaused(lockId, false);
}
function pause(uint256 lockId) public virtual {
require(isGuardian[msg.sender], "Can't pause");
isPaused[lockId] = true;
emit SetPaused(lockId, true);
}
function setIsGuardian(address addr, bool _isGuardian)
public
virtual
onlyOwner
{
isGuardian[addr] = _isGuardian;
emit SetIsGuardian(addr, _isGuardian);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./Address.sol";
import "../token/IERC20Upgradeable.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 SafeERC20Upgradeable {
using Address for address;
function safeTransfer(
IERC20Upgradeable token,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transfer.selector, to, value)
);
}
function safeTransferFrom(
IERC20Upgradeable token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
);
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
function safeIncreaseAllowance(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
function safeDecreaseAllowance(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(
oldAllowance >= value,
"SafeERC20: decreased allowance below zero"
);
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
}
/**
* @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(IERC20Upgradeable 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,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}