Contract Name:
StrategyCompound
Contract Source Code:
File 1 of 1 : StrategyCompound
// File: contracts/libraries/errors/StanleyErrors.sol
pragma solidity 0.8.16;
library StanleyErrors {
// 500-599-stanley
string public constant ASSET_MISMATCH = "IPOR_500";
// only stanley can have access to function
string public constant CALLER_NOT_STANLEY = "IPOR_501";
string public constant INCORRECT_TREASURY_ADDRESS = "IPOR_502";
//@notice amount should be > 0
string public constant IV_TOKEN_MINT_AMOUNT_TOO_LOW = "IPOR_503";
//@notice amount should be > 0
string public constant IV_TOKEN_BURN_AMOUNT_TOO_LOW = "IPOR_504";
// only Treasury Manager can have access to function
string public constant CALLER_NOT_TREASURY_MANAGER = "IPOR_505";
// problem with redeem shared token
string public constant SHARED_TOKEN_REDEEM_ERROR = "IPOR_506";
}
// File: contracts/libraries/errors/IporErrors.sol
pragma solidity 0.8.16;
library IporErrors {
// 000-199 - general codes
/// @notice General problem, address is wrong
string public constant WRONG_ADDRESS = "IPOR_000";
/// @notice General problem. Wrong decimals
string public constant WRONG_DECIMALS = "IPOR_001";
string public constant ADDRESSES_MISMATCH = "IPOR_002";
//@notice Trader doesnt have enought tokens to execute transaction
string public constant ASSET_BALANCE_TOO_LOW = "IPOR_003";
string public constant VALUE_NOT_GREATER_THAN_ZERO = "IPOR_004";
string public constant INPUT_ARRAYS_LENGTH_MISMATCH = "IPOR_005";
//@notice Amount is too low to transfer
string public constant NOT_ENOUGH_AMOUNT_TO_TRANSFER = "IPOR_006";
//@notice msg.sender is not an appointed owner, so cannot confirm his appointment to be an owner of a specific smart contract
string public constant SENDER_NOT_APPOINTED_OWNER = "IPOR_007";
//only milton can have access to function
string public constant CALLER_NOT_MILTON = "IPOR_008";
string public constant CHUNK_SIZE_EQUAL_ZERO = "IPOR_009";
string public constant CHUNK_SIZE_TOO_BIG = "IPOR_010";
}
// File: @openzeppelin/contracts-upgradeable/utils/StorageSlotUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlotUpgradeable {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
}
// File: @openzeppelin/contracts-upgradeable/proxy/beacon/IBeaconUpgradeable.sol
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
pragma solidity ^0.8.0;
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeaconUpgradeable {
/**
* @dev Must return an address that can be used as a delegate call target.
*
* {BeaconProxy} will check that this address is a contract.
*/
function implementation() external view returns (address);
}
// File: @openzeppelin/contracts-upgradeable/interfaces/draft-IERC1822Upgradeable.sol
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
* proxy whose upgrades are fully controlled by the current implementation.
*/
interface IERC1822ProxiableUpgradeable {
/**
* @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
* address.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy.
*/
function proxiableUUID() external view returns (bytes32);
}
// File: contracts/vault/interfaces/compound/ComptrollerInterface.sol
pragma solidity 0.8.16;
interface ComptrollerInterface {
function claimComp(address holder) external;
function claimComp(address holder, address[] calldata) external;
function claimComp(
address[] calldata holders,
address[] calldata cTokens,
bool borrowers,
bool suppliers
) external;
}
// File: contracts/vault/interfaces/compound/CErc20.sol
pragma solidity 0.8.16;
interface CErc20 {
function mint(uint256) external returns (uint256);
function exchangeRateCurrent() external returns (uint256);
function supplyRatePerBlock() external view returns (uint256);
function balanceOf(address) external view returns (uint256);
function exchangeRateStored() external view returns (uint256);
function redeem(uint256) external returns (uint256);
function decimals() external view returns (uint8);
}
// File: contracts/interfaces/IStrategy.sol
pragma solidity 0.8.16;
/// @title Interface for interaction with Stanley's strategy.
/// @notice Strategy represents an external DeFi protocol and acts as and wrapper that standarizes the API of the external protocol.
interface IStrategy {
/// @notice Returns current version of strategy
/// @dev Increase number when implementation inside source code is different that implementation deployed on Mainnet
/// @return current Strategy's version
function getVersion() external pure returns (uint256);
/// @notice Gets asset / underlying token / stablecoin which is assocciated with this Strategy instance
/// @return asset / underlying token / stablecoin address
function getAsset() external view returns (address);
/// @notice Returns strategy's share token address
function getShareToken() external view returns (address);
/// @notice Gets annualised interest rate (APR) for this strategy.
/// @return APR value, represented in 18 decimals.
function getApr() external view returns (uint256);
/// @notice Gets balance for given asset (underlying / stablecoin) allocated to this strategy.
/// @return balance for given asset, represented in 18 decimals.
function balanceOf() external view returns (uint256);
/// @notice Deposits asset amount from Stanley to this specific Strategy. Function available only for Stanley.
/// @dev Emits {Transfer} from ERC20 asset. If available then events from external DeFi protocol assocciated with this strategy.
/// @param amount asset amount represented in 18 decimals.
function deposit(uint256 amount) external returns (uint256 depositedAmount);
/// @notice Withdraws asset amount from Strategy to Stanley. Function available only for Stanley.
/// @dev Emits {Transfer} from ERC20 asset. If available then events from external DeFi protocol assocciated with this strategy.
/// @param amount asset amount represented in 18 decimals.
/// @return withdrawnAmount The final amount withdrawn, represented in 18 decimals
function withdraw(uint256 amount) external returns (uint256 withdrawnAmount);
/// @notice Claims rewards. Function can be executed by anyone.
function doClaim() external;
/// @notice Gets Stanley address.
function getStanley() external view returns (address);
/// @notice Sets new Stanley address. Function can be executed only by the smart contract Owner.
/// @param newStanley new Stanley address
function setStanley(address newStanley) external;
/// @notice Gets Treasury address.
/// @return Treasury address.
function getTreasury() external view returns (address);
/// @notice Sets new Treasury address. Function can be executed only by the smart contract Owner.
/// @param newTreasury new Treasury address
function setTreasury(address newTreasury) external;
/// @notice Gets new Treasury Manager address.
/// @return Treasury Manager address.
function getTreasuryManager() external view returns (address);
/// @notice Sets new Treasury Manager address. Function can be executed only by the smart contract Owner.
/// @param newTreasuryManager new Treasury Manager address
function setTreasuryManager(address newTreasuryManager) external;
/// @notice Pauses current smart contract, it can be executed only by the Owner
/// @dev Emits {Paused} event from Strategy implementation.
function pause() external;
/// @notice Unpauses current smart contract, it can be executed only by the Owner
/// @dev Emits {Unpaused} event from Strategy implementation.
function unpause() external;
/// @notice Emmited when Stanley address is changed by Owner.
/// @param changedBy account address that has changed Stanley address
/// @param oldStanley old Stanley address
/// @param newStanley new Stanley address
event StanleyChanged(address changedBy, address oldStanley, address newStanley);
/// @notice Emmited when doClaim function had been executed.
/// @param claimedBy account that executes claim action
/// @param shareToken share token assocciated with one strategy
/// @param treasury Treasury address where claimed tokens are transferred.
/// @param amount S
event DoClaim(
address indexed claimedBy,
address indexed shareToken,
address indexed treasury,
uint256 amount
);
/// @notice Emmited when Treasury address has changed
/// @param changedBy account address that has changed Treasury address
/// @param oldTreasury old Treasury address
/// @param newTreasury new Treasury address
event TreasuryChanged(address changedBy, address oldTreasury, address newTreasury);
/// @notice Emmited when Treasury Manager address has changed
/// @param changedBy account address that changed Treasury Manager's address
/// @param oldTreasuryManager old Treasury Manager address
/// @param newTreasuryManager new Treasury Manager address
event TreasuryManagerChanged(
address changedBy,
address oldTreasuryManager,
address newTreasuryManager
);
}
// File: contracts/interfaces/IStrategyCompound.sol
pragma solidity 0.8.16;
/// @title Interface for interaction with Compound.
/// @notice It standarises the calls made by the asset management to the external DeFi protocol.
interface IStrategyCompound is IStrategy {
/// @notice Emmited when blocks per year changed by Owner.
/// @param changedBy account address that changed blocks per year
/// @param oldBlocksPerYear old value blocks per year
/// @param newBlocksPerYear new value blocks per year
event BlocksPerYearChanged(
address changedBy,
uint256 oldBlocksPerYear,
uint256 newBlocksPerYear
);
}
// File: contracts/libraries/math/IporMath.sol
pragma solidity 0.8.16;
library IporMath {
//@notice Division with rounding up on last position, x, and y is with MD
function division(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = (x + (y / 2)) / y;
}
function divisionInt(int256 x, int256 y) internal pure returns (int256 z) {
z = (x + (y / 2)) / y;
}
function divisionWithoutRound(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x / y;
}
function convertWadToAssetDecimals(uint256 value, uint256 assetDecimals)
internal
pure
returns (uint256)
{
if (assetDecimals == 18) {
return value;
} else if (assetDecimals > 18) {
return value * 10**(assetDecimals - 18);
} else {
return division(value, 10**(18 - assetDecimals));
}
}
function convertWadToAssetDecimalsWithoutRound(uint256 value, uint256 assetDecimals)
internal
pure
returns (uint256)
{
if (assetDecimals == 18) {
return value;
} else if (assetDecimals > 18) {
return value * 10**(assetDecimals - 18);
} else {
return divisionWithoutRound(value, 10**(18 - assetDecimals));
}
}
function convertToWad(uint256 value, uint256 assetDecimals) internal pure returns (uint256) {
if (value > 0) {
if (assetDecimals == 18) {
return value;
} else if (assetDecimals > 18) {
return division(value, 10**(assetDecimals - 18));
} else {
return value * 10**(18 - assetDecimals);
}
} else {
return value;
}
}
function absoluteValue(int256 value) internal pure returns (uint256) {
return (uint256)(value < 0 ? -value : value);
}
function percentOf(uint256 value, uint256 rate) internal pure returns (uint256) {
return division(value * rate, 1e18);
}
}
// File: contracts/libraries/Constants.sol
pragma solidity 0.8.16;
library Constants {
uint256 public constant MAX_VALUE =
115792089237316195423570985008687907853269984665640564039457584007913129639935;
uint256 public constant D18 = 1e18;
int256 public constant D18_INT = 1e18;
uint256 public constant D36 = 1e36;
uint256 public constant D54 = 1e54;
uint256 public constant YEAR_IN_SECONDS = 365 days;
uint256 public constant WAD_YEAR_IN_SECONDS = D18 * YEAR_IN_SECONDS;
int256 public constant WAD_YEAR_IN_SECONDS_INT = int256(WAD_YEAR_IN_SECONDS);
uint256 public constant WAD_P2_YEAR_IN_SECONDS = D18 * D18 * YEAR_IN_SECONDS;
int256 public constant WAD_P2_YEAR_IN_SECONDS_INT = int256(WAD_P2_YEAR_IN_SECONDS);
uint256 public constant MAX_CHUNK_SIZE = 50;
//@notice By default every swap takes 28 days, this variable show this value in seconds
uint256 public constant SWAP_DEFAULT_PERIOD_IN_SECONDS = 60 * 60 * 24 * 28;
}
// File: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
/**
* @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.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* 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 prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
* initialization step. This is essential to configure modules that are added through upgrades and that require
* initialization.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
}
// File: @openzeppelin/contracts-upgradeable/proxy/ERC1967/ERC1967UpgradeUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)
pragma solidity ^0.8.2;
/**
* @dev This abstract contract provides getters and event emitting update functions for
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
*
* _Available since v4.1._
*
* @custom:oz-upgrades-unsafe-allow delegatecall
*/
abstract contract ERC1967UpgradeUpgradeable is Initializable {
function __ERC1967Upgrade_init() internal onlyInitializing {
}
function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
}
// This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Returns the current implementation address.
*/
function _getImplementation() internal view returns (address) {
return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
}
/**
* @dev Perform implementation upgrade
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Perform implementation upgrade with additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCall(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
_upgradeTo(newImplementation);
if (data.length > 0 || forceCall) {
_functionDelegateCall(newImplementation, data);
}
}
/**
* @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCallUUPS(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
// Upgrades from old implementations will perform a rollback test. This test requires the new
// implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
// this special case will break upgrade paths from old UUPS implementation to new ones.
if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
_setImplementation(newImplementation);
} else {
try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
} catch {
revert("ERC1967Upgrade: new implementation is not UUPS");
}
_upgradeToAndCall(newImplementation, data, forceCall);
}
}
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Returns the current admin.
*/
function _getAdmin() internal view returns (address) {
return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
require(newAdmin != address(0), "ERC1967: new admin is the zero address");
StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*/
function _changeAdmin(address newAdmin) internal {
emit AdminChanged(_getAdmin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @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 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
/**
* @dev Emitted when the beacon is upgraded.
*/
event BeaconUpgraded(address indexed beacon);
/**
* @dev Returns the current beacon.
*/
function _getBeacon() internal view returns (address) {
return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
}
/**
* @dev Stores a new beacon in the EIP1967 beacon slot.
*/
function _setBeacon(address newBeacon) private {
require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
require(
AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
"ERC1967: beacon implementation is not a contract"
);
StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
}
/**
* @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
* not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
*
* Emits a {BeaconUpgraded} event.
*/
function _upgradeBeaconToAndCall(
address newBeacon,
bytes memory data,
bool forceCall
) internal {
_setBeacon(newBeacon);
emit BeaconUpgraded(newBeacon);
if (data.length > 0 || forceCall) {
_functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
}
}
/**
* @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) private returns (bytes memory) {
require(AddressUpgradeable.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 AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed");
}
/**
* @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/proxy/utils/UUPSUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/UUPSUpgradeable.sol)
pragma solidity ^0.8.0;
/**
* @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
* {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
*
* A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
* reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
* `UUPSUpgradeable` with a custom implementation of upgrades.
*
* The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
*
* _Available since v4.1._
*/
abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
function __UUPSUpgradeable_init() internal onlyInitializing {
}
function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
}
/// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
address private immutable __self = address(this);
/**
* @dev Check that the execution is being performed through a delegatecall call and that the execution context is
* a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
* for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
* function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
* fail.
*/
modifier onlyProxy() {
require(address(this) != __self, "Function must be called through delegatecall");
require(_getImplementation() == __self, "Function must be called through active proxy");
_;
}
/**
* @dev Check that the execution is not being performed through a delegate call. This allows a function to be
* callable on the implementing contract but not through proxies.
*/
modifier notDelegated() {
require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
_;
}
/**
* @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
* implementation. It is used to validate that the this implementation remains valid after an upgrade.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
*/
function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
return _IMPLEMENTATION_SLOT;
}
/**
* @dev Upgrade the implementation of the proxy to `newImplementation`.
*
* Calls {_authorizeUpgrade}.
*
* Emits an {Upgraded} event.
*/
function upgradeTo(address newImplementation) external virtual onlyProxy {
_authorizeUpgrade(newImplementation);
_upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
}
/**
* @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
* encoded in `data`.
*
* Calls {_authorizeUpgrade}.
*
* Emits an {Upgraded} event.
*/
function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy {
_authorizeUpgrade(newImplementation);
_upgradeToAndCallUUPS(newImplementation, data, true);
}
/**
* @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
* {upgradeTo} and {upgradeToAndCall}.
*
* Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
*
* ```solidity
* function _authorizeUpgrade(address) internal override onlyOwner {}
* ```
*/
function _authorizeUpgrade(address newImplementation) 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[50] private __gap;
}
// File: @openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuardUpgradeable is Initializable {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
function __ReentrancyGuard_init() internal onlyInitializing {
__ReentrancyGuard_init_unchained();
}
function __ReentrancyGuard_init_unchained() internal onlyInitializing {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @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[49] private __gap;
}
// File: @openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol
// 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/access/OwnableUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @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 onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
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 {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
/**
* @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[49] private __gap;
}
// File: contracts/security/IporOwnableUpgradeable.sol
pragma solidity 0.8.16;
contract IporOwnableUpgradeable is OwnableUpgradeable {
address private _appointedOwner;
event AppointedToTransferOwnership(address indexed appointedOwner);
function transferOwnership(address appointedOwner) public override onlyOwner {
require(appointedOwner != address(0), IporErrors.WRONG_ADDRESS);
_appointedOwner = appointedOwner;
emit AppointedToTransferOwnership(appointedOwner);
}
function confirmTransferOwnership() public onlyAppointedOwner {
_appointedOwner = address(0);
_transferOwnership(_msgSender());
}
modifier onlyAppointedOwner() {
require(_appointedOwner == _msgSender(), IporErrors.SENDER_NOT_APPOINTED_OWNER);
_;
}
}
// File: @openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal onlyInitializing {
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal onlyInitializing {
_paused = false;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
_requireNotPaused();
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
_requirePaused();
_;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Throws if the contract is paused.
*/
function _requireNotPaused() internal view virtual {
require(!paused(), "Pausable: paused");
}
/**
* @dev Throws if the contract is not paused.
*/
function _requirePaused() internal view virtual {
require(paused(), "Pausable: not paused");
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
/**
* @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[49] private __gap;
}
// File: contracts/vault/strategies/StrategyCore.sol
pragma solidity 0.8.16;
abstract contract StrategyCore is
Initializable,
PausableUpgradeable,
ReentrancyGuardUpgradeable,
UUPSUpgradeable,
IporOwnableUpgradeable,
IStrategy
{
address internal _asset;
address internal _shareToken;
address internal _stanley;
address internal _treasury;
address internal _treasuryManager;
modifier onlyStanley() {
require(_msgSender() == _stanley, StanleyErrors.CALLER_NOT_STANLEY);
_;
}
modifier onlyTreasuryManager() {
require(_msgSender() == _treasuryManager, StanleyErrors.CALLER_NOT_TREASURY_MANAGER);
_;
}
function getVersion() external pure override returns (uint256) {
return 2;
}
function getAsset() external view override returns (address) {
return _asset;
}
/**
* @dev Share token to track _asset (DAI -> cDAI)
*/
function getShareToken() external view override returns (address) {
return _shareToken;
}
function getStanley() external view override returns (address) {
return _stanley;
}
function setStanley(address newStanley) external whenNotPaused onlyOwner {
require(newStanley != address(0), IporErrors.WRONG_ADDRESS);
address oldStanley = _stanley;
_stanley = newStanley;
emit StanleyChanged(_msgSender(), oldStanley, newStanley);
}
function getTreasuryManager() external view override returns (address) {
return _treasuryManager;
}
function setTreasuryManager(address manager) external whenNotPaused onlyOwner {
require(manager != address(0), IporErrors.WRONG_ADDRESS);
address oldTreasuryManager = _treasuryManager;
_treasuryManager = manager;
emit TreasuryManagerChanged(_msgSender(), oldTreasuryManager, manager);
}
function getTreasury() external view override returns (address) {
return _treasury;
}
function setTreasury(address newTreasury) external whenNotPaused onlyTreasuryManager {
require(newTreasury != address(0), StanleyErrors.INCORRECT_TREASURY_ADDRESS);
address oldTreasury = _treasury;
_treasury = newTreasury;
emit TreasuryChanged(_msgSender(), oldTreasury, newTreasury);
}
function pause() external override onlyOwner {
_pause();
}
function unpause() external override onlyOwner {
_unpause();
}
//solhint-disable no-empty-blocks
function _authorizeUpgrade(address) internal override onlyOwner {}
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20PermitUpgradeable {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the 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);
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @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 AddressUpgradeable 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'
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));
}
}
function safePermit(
IERC20PermitUpgradeable token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the 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);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
// 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 IERC20Metadata is IERC20 {
/**
* @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: contracts/vault/strategies/StrategyCompound.sol
pragma solidity 0.8.16;
contract StrategyCompound is StrategyCore, IStrategyCompound {
using SafeERC20Upgradeable for IERC20Upgradeable;
uint256 private _blocksPerYear;
ComptrollerInterface private _comptroller;
IERC20Upgradeable private _compToken;
/// @custom:oz-upgrades-unsafe-allow constructor
constructor() {
_disableInitializers();
}
/**
* @dev Deploy StrategyCompound.
* @notice Deploy StrategyCompound.
* @param asset underlying token like DAI, USDT etc.
* @param shareToken share token like cDAI
* @param comptroller _comptroller to claim comp
* @param compToken comp token.
*/
function initialize(
address asset,
address shareToken,
address comptroller,
address compToken
) public initializer nonReentrant {
__Pausable_init();
__Ownable_init();
__UUPSUpgradeable_init();
require(asset != address(0), IporErrors.WRONG_ADDRESS);
require(shareToken != address(0), IporErrors.WRONG_ADDRESS);
require(comptroller != address(0), IporErrors.WRONG_ADDRESS);
require(compToken != address(0), IporErrors.WRONG_ADDRESS);
_asset = asset;
_shareToken = shareToken;
_comptroller = ComptrollerInterface(comptroller);
_compToken = IERC20Upgradeable(compToken);
IERC20Upgradeable(_asset).safeApprove(shareToken, type(uint256).max);
_blocksPerYear = 2102400;
_treasuryManager = _msgSender();
}
/**
* @notice gets current APR in Compound Protocol.
*/
function getApr() external view override returns (uint256 apr) {
uint256 cRate = CErc20(_shareToken).supplyRatePerBlock(); // interest % per block
apr = cRate * _blocksPerYear;
}
/// @notice Gets Stanley Compound Strategy's asset amount in Compound Protocol.
/// @dev Explanation decimals inside implementation
/// In Compound exchangeRateStored is calculated in following way:
/// uint exchangeRate = cashPlusBorrowsMinusReserves * expScale / _totalSupply;
/// When:
/// Asset decimals = 18, then exchangeRate decimals := 18 + 18 - 8 = 28 and balanceOf decimals := 28 + 8 - 18 = 18 decimals.
/// Asset decimals = 6, then exchangeRate decimals := 6 + 18 - 8 = 16 and balanceOf decimals := 16 + 8 - 6 = 18 decimals.
/// In both cases we have 18 decimals which is number of decimals supported in IPOR Protocol.
/// @return uint256 Stanley Strategy's asset amount in Compound represented in 18 decimals
function balanceOf() external view override returns (uint256) {
CErc20 shareToken = CErc20(_shareToken);
return (
IporMath.division(
(shareToken.exchangeRateStored() * shareToken.balanceOf(address(this))),
(10**IERC20Metadata(_asset).decimals())
)
);
}
/**
* @dev Deposit into compound lending.
* @notice deposit can only done by Stanley .
* @param wadAmount amount to deposit in compound lending, amount represented in 18 decimals
*/
function deposit(uint256 wadAmount)
external
override
whenNotPaused
onlyStanley
returns (uint256 depositedAmount)
{
address asset = _asset;
uint256 assetDecimals = IERC20Metadata(asset).decimals();
uint256 amount = IporMath.convertWadToAssetDecimals(wadAmount, assetDecimals);
IERC20Upgradeable(asset).safeTransferFrom(_msgSender(), address(this), amount);
CErc20(_shareToken).mint(amount);
depositedAmount = IporMath.convertToWad(amount, assetDecimals);
}
/**
* @dev withdraw from compound lending.
* @notice withdraw can only done by Stanley.
* @param wadAmount candidate amount to withdraw from compound lending, amount represented in 18 decimals
*/
function withdraw(uint256 wadAmount)
external
override
whenNotPaused
onlyStanley
returns (uint256 withdrawnAmount)
{
address asset = _asset;
uint256 assetDecimals = IERC20Metadata(asset).decimals();
uint256 amount = IporMath.convertWadToAssetDecimalsWithoutRound(wadAmount, assetDecimals);
CErc20 shareToken = CErc20(_shareToken);
// Transfer assets from Compound to Strategy
uint256 redeemStatus = shareToken.redeem(
IporMath.division(amount * Constants.D18, shareToken.exchangeRateStored())
);
require(redeemStatus == 0, StanleyErrors.SHARED_TOKEN_REDEEM_ERROR);
uint256 withdrawnAmountCompound = IERC20Upgradeable(asset).balanceOf(address(this));
// Transfer all assets from Strategy to Stanley
IERC20Upgradeable(asset).safeTransfer(_msgSender(), withdrawnAmountCompound);
withdrawnAmount = IporMath.convertToWad(withdrawnAmountCompound, assetDecimals);
}
/**
* @dev Claim extra reward of Governace token(COMP).
*/
function doClaim() external override whenNotPaused nonReentrant onlyOwner {
address treasury = _treasury;
IERC20Upgradeable compToken = _compToken;
require(treasury != address(0), IporErrors.WRONG_ADDRESS);
address[] memory assets = new address[](1);
assets[0] = _shareToken;
_comptroller.claimComp(address(this), assets);
uint256 balance = compToken.balanceOf(address(this));
compToken.safeTransfer(treasury, balance);
emit DoClaim(_msgSender(), assets[0], treasury, balance);
}
function setBlocksPerYear(uint256 newBlocksPerYear) external whenNotPaused onlyOwner {
require(newBlocksPerYear > 0, IporErrors.VALUE_NOT_GREATER_THAN_ZERO);
uint256 oldBlocksPerYear = _blocksPerYear;
_blocksPerYear = newBlocksPerYear;
emit BlocksPerYearChanged(_msgSender(), oldBlocksPerYear, newBlocksPerYear);
}
}
contract StrategyCompoundUsdt is StrategyCompound {}
contract StrategyCompoundUsdc is StrategyCompound {}
contract StrategyCompoundDai is StrategyCompound {}