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Contract Source Code Verified (Exact Match)
Contract Name:
OSonicVaultAdmin
Compiler Version
v0.8.28+commit.7893614a
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { OETHVaultAdmin } from "./OETHVaultAdmin.sol";
/**
* @title Origin Sonic VaultAdmin contract on Sonic
* @author Origin Protocol Inc
*/
contract OSonicVaultAdmin is OETHVaultAdmin {
/// @param _wS Sonic's Wrapped S token
constructor(address _wS) OETHVaultAdmin(_wS) {}
/***************************************
Asset Config
****************************************/
/**
* @notice Add a supported asset to the contract, i.e. one that can be to mint OTokens.
* @dev Overridden to remove price provider integration
* @param _asset Address of asset
* @param _unitConversion 0 decimals, 1 exchange rate
*/
function supportAsset(address _asset, uint8 _unitConversion)
external
override
onlyGovernor
{
require(!assets[_asset].isSupported, "Asset already supported");
assets[_asset] = Asset({
isSupported: true,
unitConversion: UnitConversion(_unitConversion),
decimals: 0, // will be overridden in _cacheDecimals
allowedOracleSlippageBps: 0 // 0% by default
});
_cacheDecimals(_asset);
allAssets.push(_asset);
emit AssetSupported(_asset);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `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
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 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(
IERC20 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(
IERC20 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(
IERC20 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(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
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;
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");
(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 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");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeCast.sol)
pragma solidity ^0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toUint224(uint256 value) internal pure returns (uint224) {
require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
return uint224(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toUint96(uint256 value) internal pure returns (uint96) {
require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
return uint96(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128) {
require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits");
return int128(value);
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64) {
require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits");
return int64(value);
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32) {
require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits");
return int32(value);
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16) {
require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits");
return int16(value);
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8) {
require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits");
return int8(value);
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Base for contracts that are managed by the Origin Protocol's Governor.
* @dev Copy of the openzeppelin Ownable.sol contract with nomenclature change
* from owner to governor and renounce methods removed. Does not use
* Context.sol like Ownable.sol does for simplification.
* @author Origin Protocol Inc
*/
contract Governable {
// Storage position of the owner and pendingOwner of the contract
// keccak256("OUSD.governor");
bytes32 private constant governorPosition =
0x7bea13895fa79d2831e0a9e28edede30099005a50d652d8957cf8a607ee6ca4a;
// keccak256("OUSD.pending.governor");
bytes32 private constant pendingGovernorPosition =
0x44c4d30b2eaad5130ad70c3ba6972730566f3e6359ab83e800d905c61b1c51db;
// keccak256("OUSD.reentry.status");
bytes32 private constant reentryStatusPosition =
0x53bf423e48ed90e97d02ab0ebab13b2a235a6bfbe9c321847d5c175333ac4535;
// See OpenZeppelin ReentrancyGuard implementation
uint256 constant _NOT_ENTERED = 1;
uint256 constant _ENTERED = 2;
event PendingGovernorshipTransfer(
address indexed previousGovernor,
address indexed newGovernor
);
event GovernorshipTransferred(
address indexed previousGovernor,
address indexed newGovernor
);
/**
* @dev Initializes the contract setting the deployer as the initial Governor.
*/
constructor() {
_setGovernor(msg.sender);
emit GovernorshipTransferred(address(0), _governor());
}
/**
* @notice Returns the address of the current Governor.
*/
function governor() public view returns (address) {
return _governor();
}
/**
* @dev Returns the address of the current Governor.
*/
function _governor() internal view returns (address governorOut) {
bytes32 position = governorPosition;
// solhint-disable-next-line no-inline-assembly
assembly {
governorOut := sload(position)
}
}
/**
* @dev Returns the address of the pending Governor.
*/
function _pendingGovernor()
internal
view
returns (address pendingGovernor)
{
bytes32 position = pendingGovernorPosition;
// solhint-disable-next-line no-inline-assembly
assembly {
pendingGovernor := sload(position)
}
}
/**
* @dev Throws if called by any account other than the Governor.
*/
modifier onlyGovernor() {
require(isGovernor(), "Caller is not the Governor");
_;
}
/**
* @notice Returns true if the caller is the current Governor.
*/
function isGovernor() public view returns (bool) {
return msg.sender == _governor();
}
function _setGovernor(address newGovernor) internal {
bytes32 position = governorPosition;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, newGovernor)
}
}
/**
* @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 make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
bytes32 position = reentryStatusPosition;
uint256 _reentry_status;
// solhint-disable-next-line no-inline-assembly
assembly {
_reentry_status := sload(position)
}
// On the first call to nonReentrant, _notEntered will be true
require(_reentry_status != _ENTERED, "Reentrant call");
// Any calls to nonReentrant after this point will fail
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, _ENTERED)
}
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, _NOT_ENTERED)
}
}
function _setPendingGovernor(address newGovernor) internal {
bytes32 position = pendingGovernorPosition;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, newGovernor)
}
}
/**
* @notice Transfers Governance of the contract to a new account (`newGovernor`).
* Can only be called by the current Governor. Must be claimed for this to complete
* @param _newGovernor Address of the new Governor
*/
function transferGovernance(address _newGovernor) external onlyGovernor {
_setPendingGovernor(_newGovernor);
emit PendingGovernorshipTransfer(_governor(), _newGovernor);
}
/**
* @notice Claim Governance of the contract to a new account (`newGovernor`).
* Can only be called by the new Governor.
*/
function claimGovernance() external {
require(
msg.sender == _pendingGovernor(),
"Only the pending Governor can complete the claim"
);
_changeGovernor(msg.sender);
}
/**
* @dev Change Governance of the contract to a new account (`newGovernor`).
* @param _newGovernor Address of the new Governor
*/
function _changeGovernor(address _newGovernor) internal {
require(_newGovernor != address(0), "New Governor is address(0)");
emit GovernorshipTransferred(_governor(), _newGovernor);
_setGovernor(_newGovernor);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IBasicToken {
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IOracle {
/**
* @dev returns the asset price in USD, in 8 decimal digits.
*
* The version of priceProvider deployed for OETH has 18 decimal digits
*/
function price(address asset) external view returns (uint256);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Platform interface to integrate with lending platform like Compound, AAVE etc.
*/
interface IStrategy {
/**
* @dev Deposit the given asset to platform
* @param _asset asset address
* @param _amount Amount to deposit
*/
function deposit(address _asset, uint256 _amount) external;
/**
* @dev Deposit the entire balance of all supported assets in the Strategy
* to the platform
*/
function depositAll() external;
/**
* @dev Withdraw given asset from Lending platform
*/
function withdraw(
address _recipient,
address _asset,
uint256 _amount
) external;
/**
* @dev Liquidate all assets in strategy and return them to Vault.
*/
function withdrawAll() external;
/**
* @dev Returns the current balance of the given asset.
*/
function checkBalance(address _asset)
external
view
returns (uint256 balance);
/**
* @dev Returns bool indicating whether strategy supports asset.
*/
function supportsAsset(address _asset) external view returns (bool);
/**
* @dev Collect reward tokens from the Strategy.
*/
function collectRewardTokens() external;
/**
* @dev The address array of the reward tokens for the Strategy.
*/
function getRewardTokenAddresses() external view returns (address[] memory);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ISwapper {
/**
* @param fromAsset The token address of the asset being sold.
* @param toAsset The token address of the asset being purchased.
* @param fromAssetAmount The amount of assets being sold.
* @param minToAssetAmmount The minimum amount of assets to be purchased.
* @param data tx.data returned from 1Inch's /v5.0/1/swap API
*/
function swap(
address fromAsset,
address toAsset,
uint256 fromAssetAmount,
uint256 minToAssetAmmount,
bytes calldata data
) external returns (uint256 toAssetAmount);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { VaultStorage } from "../vault/VaultStorage.sol";
interface IVault {
event AssetSupported(address _asset);
event AssetDefaultStrategyUpdated(address _asset, address _strategy);
event AssetAllocated(address _asset, address _strategy, uint256 _amount);
event StrategyApproved(address _addr);
event StrategyRemoved(address _addr);
event Mint(address _addr, uint256 _value);
event Redeem(address _addr, uint256 _value);
event CapitalPaused();
event CapitalUnpaused();
event RebasePaused();
event RebaseUnpaused();
event VaultBufferUpdated(uint256 _vaultBuffer);
event RedeemFeeUpdated(uint256 _redeemFeeBps);
event PriceProviderUpdated(address _priceProvider);
event AllocateThresholdUpdated(uint256 _threshold);
event RebaseThresholdUpdated(uint256 _threshold);
event StrategistUpdated(address _address);
event MaxSupplyDiffChanged(uint256 maxSupplyDiff);
event YieldDistribution(address _to, uint256 _yield, uint256 _fee);
event TrusteeFeeBpsChanged(uint256 _basis);
event TrusteeAddressChanged(address _address);
event SwapperChanged(address _address);
event SwapAllowedUndervalueChanged(uint256 _basis);
event SwapSlippageChanged(address _asset, uint256 _basis);
event Swapped(
address indexed _fromAsset,
address indexed _toAsset,
uint256 _fromAssetAmount,
uint256 _toAssetAmount
);
event StrategyAddedToMintWhitelist(address indexed strategy);
event StrategyRemovedFromMintWhitelist(address indexed strategy);
event DripperChanged(address indexed _dripper);
event WithdrawalRequested(
address indexed _withdrawer,
uint256 indexed _requestId,
uint256 _amount,
uint256 _queued
);
event WithdrawalClaimed(
address indexed _withdrawer,
uint256 indexed _requestId,
uint256 _amount
);
event WithdrawalClaimable(uint256 _claimable, uint256 _newClaimable);
// Governable.sol
function transferGovernance(address _newGovernor) external;
function claimGovernance() external;
function governor() external view returns (address);
// VaultAdmin.sol
function setPriceProvider(address _priceProvider) external;
function priceProvider() external view returns (address);
function setRedeemFeeBps(uint256 _redeemFeeBps) external;
function redeemFeeBps() external view returns (uint256);
function setVaultBuffer(uint256 _vaultBuffer) external;
function vaultBuffer() external view returns (uint256);
function setAutoAllocateThreshold(uint256 _threshold) external;
function autoAllocateThreshold() external view returns (uint256);
function setRebaseThreshold(uint256 _threshold) external;
function rebaseThreshold() external view returns (uint256);
function setStrategistAddr(address _address) external;
function strategistAddr() external view returns (address);
function setMaxSupplyDiff(uint256 _maxSupplyDiff) external;
function maxSupplyDiff() external view returns (uint256);
function setTrusteeAddress(address _address) external;
function trusteeAddress() external view returns (address);
function setTrusteeFeeBps(uint256 _basis) external;
function trusteeFeeBps() external view returns (uint256);
function ousdMetaStrategy() external view returns (address);
function setSwapper(address _swapperAddr) external;
function setSwapAllowedUndervalue(uint16 _percentageBps) external;
function setOracleSlippage(address _asset, uint16 _allowedOracleSlippageBps)
external;
function supportAsset(address _asset, uint8 _supportsAsset) external;
function approveStrategy(address _addr) external;
function removeStrategy(address _addr) external;
function setAssetDefaultStrategy(address _asset, address _strategy)
external;
function assetDefaultStrategies(address _asset)
external
view
returns (address);
function pauseRebase() external;
function unpauseRebase() external;
function rebasePaused() external view returns (bool);
function pauseCapital() external;
function unpauseCapital() external;
function capitalPaused() external view returns (bool);
function transferToken(address _asset, uint256 _amount) external;
function priceUnitMint(address asset) external view returns (uint256);
function priceUnitRedeem(address asset) external view returns (uint256);
function withdrawAllFromStrategy(address _strategyAddr) external;
function withdrawAllFromStrategies() external;
function withdrawFromStrategy(
address _strategyFromAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) external;
function depositToStrategy(
address _strategyToAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) external;
// VaultCore.sol
function mint(
address _asset,
uint256 _amount,
uint256 _minimumOusdAmount
) external;
function mintForStrategy(uint256 _amount) external;
function redeem(uint256 _amount, uint256 _minimumUnitAmount) external;
function burnForStrategy(uint256 _amount) external;
function redeemAll(uint256 _minimumUnitAmount) external;
function allocate() external;
function rebase() external;
function swapCollateral(
address fromAsset,
address toAsset,
uint256 fromAssetAmount,
uint256 minToAssetAmount,
bytes calldata data
) external returns (uint256 toAssetAmount);
function totalValue() external view returns (uint256 value);
function checkBalance(address _asset) external view returns (uint256);
function calculateRedeemOutputs(uint256 _amount)
external
view
returns (uint256[] memory);
function getAssetCount() external view returns (uint256);
function getAssetConfig(address _asset)
external
view
returns (VaultStorage.Asset memory config);
function getAllAssets() external view returns (address[] memory);
function getStrategyCount() external view returns (uint256);
function swapper() external view returns (address);
function allowedSwapUndervalue() external view returns (uint256);
function getAllStrategies() external view returns (address[] memory);
function isSupportedAsset(address _asset) external view returns (bool);
function netOusdMintForStrategyThreshold() external view returns (uint256);
function setOusdMetaStrategy(address _ousdMetaStrategy) external;
function setNetOusdMintForStrategyThreshold(uint256 _threshold) external;
function netOusdMintedForStrategy() external view returns (int256);
function setDripper(address _dripper) external;
function dripper() external view returns (address);
function weth() external view returns (address);
function cacheWETHAssetIndex() external;
function wethAssetIndex() external view returns (uint256);
function initialize(address, address) external;
function setAdminImpl(address) external;
function removeAsset(address _asset) external;
// These are OETH specific functions
function addWithdrawalQueueLiquidity() external;
function requestWithdrawal(uint256 _amount)
external
returns (uint256 requestId, uint256 queued);
function claimWithdrawal(uint256 requestId)
external
returns (uint256 amount);
function claimWithdrawals(uint256[] memory requestIds)
external
returns (uint256[] memory amounts, uint256 totalAmount);
function withdrawalQueueMetadata()
external
view
returns (VaultStorage.WithdrawalQueueMetadata memory);
function withdrawalRequests(uint256 requestId)
external
view
returns (VaultStorage.WithdrawalRequest memory);
// OETHb specific functions
function addStrategyToMintWhitelist(address strategyAddr) external;
function removeStrategyFromMintWhitelist(address strategyAddr) external;
function isMintWhitelistedStrategy(address strategyAddr)
external
view
returns (bool);
function withdrawalClaimDelay() external view returns (uint256);
function setWithdrawalClaimDelay(uint256 newDelay) external;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
/**
* @title OUSD Token Contract
* @dev ERC20 compatible contract for OUSD
* @dev Implements an elastic supply
* @author Origin Protocol Inc
*/
import { Governable } from "../governance/Governable.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol";
contract OUSD is Governable {
using SafeCast for int256;
using SafeCast for uint256;
/// @dev Event triggered when the supply changes
/// @param totalSupply Updated token total supply
/// @param rebasingCredits Updated token rebasing credits
/// @param rebasingCreditsPerToken Updated token rebasing credits per token
event TotalSupplyUpdatedHighres(
uint256 totalSupply,
uint256 rebasingCredits,
uint256 rebasingCreditsPerToken
);
/// @dev Event triggered when an account opts in for rebasing
/// @param account Address of the account
event AccountRebasingEnabled(address account);
/// @dev Event triggered when an account opts out of rebasing
/// @param account Address of the account
event AccountRebasingDisabled(address account);
/// @dev Emitted when `value` tokens are moved from one account `from` to
/// another `to`.
/// @param from Address of the account tokens are moved from
/// @param to Address of the account tokens are moved to
/// @param value Amount of tokens transferred
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.
/// @param owner Address of the owner approving allowance
/// @param spender Address of the spender allowance is granted to
/// @param value Amount of tokens spender can transfer
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
/// @dev Yield resulting from {changeSupply} that a `source` account would
/// receive is directed to `target` account.
/// @param source Address of the source forwarding the yield
/// @param target Address of the target receiving the yield
event YieldDelegated(address source, address target);
/// @dev Yield delegation from `source` account to the `target` account is
/// suspended.
/// @param source Address of the source suspending yield forwarding
/// @param target Address of the target no longer receiving yield from `source`
/// account
event YieldUndelegated(address source, address target);
enum RebaseOptions {
NotSet,
StdNonRebasing,
StdRebasing,
YieldDelegationSource,
YieldDelegationTarget
}
uint256[154] private _gap; // Slots to align with deployed contract
uint256 private constant MAX_SUPPLY = type(uint128).max;
/// @dev The amount of tokens in existence
uint256 public totalSupply;
mapping(address => mapping(address => uint256)) private allowances;
/// @dev The vault with privileges to execute {mint}, {burn}
/// and {changeSupply}
address public vaultAddress;
mapping(address => uint256) internal creditBalances;
// the 2 storage variables below need trailing underscores to not name collide with public functions
uint256 private rebasingCredits_; // Sum of all rebasing credits (creditBalances for rebasing accounts)
uint256 private rebasingCreditsPerToken_;
/// @dev The amount of tokens that are not rebasing - receiving yield
uint256 public nonRebasingSupply;
mapping(address => uint256) internal alternativeCreditsPerToken;
/// @dev A map of all addresses and their respective RebaseOptions
mapping(address => RebaseOptions) public rebaseState;
mapping(address => uint256) private __deprecated_isUpgraded;
/// @dev A map of addresses that have yields forwarded to. This is an
/// inverse mapping of {yieldFrom}
/// Key Account forwarding yield
/// Value Account receiving yield
mapping(address => address) public yieldTo;
/// @dev A map of addresses that are receiving the yield. This is an
/// inverse mapping of {yieldTo}
/// Key Account receiving yield
/// Value Account forwarding yield
mapping(address => address) public yieldFrom;
uint256 private constant RESOLUTION_INCREASE = 1e9;
uint256[34] private __gap; // including below gap totals up to 200
/// @dev Initializes the contract and sets necessary variables.
/// @param _vaultAddress Address of the vault contract
/// @param _initialCreditsPerToken The starting rebasing credits per token.
function initialize(address _vaultAddress, uint256 _initialCreditsPerToken)
external
onlyGovernor
{
require(_vaultAddress != address(0), "Zero vault address");
require(vaultAddress == address(0), "Already initialized");
rebasingCreditsPerToken_ = _initialCreditsPerToken;
vaultAddress = _vaultAddress;
}
/// @dev Returns the symbol of the token, a shorter version
/// of the name.
function symbol() external pure virtual returns (string memory) {
return "OUSD";
}
/// @dev Returns the name of the token.
function name() external pure virtual returns (string memory) {
return "Origin Dollar";
}
/// @dev Returns the number of decimals used to get its user representation.
function decimals() external pure virtual returns (uint8) {
return 18;
}
/**
* @dev Verifies that the caller is the Vault contract
*/
modifier onlyVault() {
require(vaultAddress == msg.sender, "Caller is not the Vault");
_;
}
/**
* @return High resolution rebasingCreditsPerToken
*/
function rebasingCreditsPerTokenHighres() external view returns (uint256) {
return rebasingCreditsPerToken_;
}
/**
* @return Low resolution rebasingCreditsPerToken
*/
function rebasingCreditsPerToken() external view returns (uint256) {
return rebasingCreditsPerToken_ / RESOLUTION_INCREASE;
}
/**
* @return High resolution total number of rebasing credits
*/
function rebasingCreditsHighres() external view returns (uint256) {
return rebasingCredits_;
}
/**
* @return Low resolution total number of rebasing credits
*/
function rebasingCredits() external view returns (uint256) {
return rebasingCredits_ / RESOLUTION_INCREASE;
}
/**
* @notice Gets the balance of the specified address.
* @param _account Address to query the balance of.
* @return A uint256 representing the amount of base units owned by the
* specified address.
*/
function balanceOf(address _account) public view returns (uint256) {
RebaseOptions state = rebaseState[_account];
if (state == RebaseOptions.YieldDelegationSource) {
// Saves a slot read when transferring to or from a yield delegating source
// since we know creditBalances equals the balance.
return creditBalances[_account];
}
uint256 baseBalance = (creditBalances[_account] * 1e18) /
_creditsPerToken(_account);
if (state == RebaseOptions.YieldDelegationTarget) {
// creditBalances of yieldFrom accounts equals token balances
return baseBalance - creditBalances[yieldFrom[_account]];
}
return baseBalance;
}
/**
* @notice Gets the credits balance of the specified address.
* @dev Backwards compatible with old low res credits per token.
* @param _account The address to query the balance of.
* @return (uint256, uint256) Credit balance and credits per token of the
* address
*/
function creditsBalanceOf(address _account)
external
view
returns (uint256, uint256)
{
uint256 cpt = _creditsPerToken(_account);
if (cpt == 1e27) {
// For a period before the resolution upgrade, we created all new
// contract accounts at high resolution. Since they are not changing
// as a result of this upgrade, we will return their true values
return (creditBalances[_account], cpt);
} else {
return (
creditBalances[_account] / RESOLUTION_INCREASE,
cpt / RESOLUTION_INCREASE
);
}
}
/**
* @notice Gets the credits balance of the specified address.
* @param _account The address to query the balance of.
* @return (uint256, uint256, bool) Credit balance, credits per token of the
* address, and isUpgraded
*/
function creditsBalanceOfHighres(address _account)
external
view
returns (
uint256,
uint256,
bool
)
{
return (
creditBalances[_account],
_creditsPerToken(_account),
true // all accounts have their resolution "upgraded"
);
}
// Backwards compatible view
function nonRebasingCreditsPerToken(address _account)
external
view
returns (uint256)
{
return alternativeCreditsPerToken[_account];
}
/**
* @notice Transfer tokens to a specified address.
* @param _to the address to transfer to.
* @param _value the amount to be transferred.
* @return true on success.
*/
function transfer(address _to, uint256 _value) external returns (bool) {
require(_to != address(0), "Transfer to zero address");
_executeTransfer(msg.sender, _to, _value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @notice Transfer tokens from one address to another.
* @param _from The address you want to send tokens from.
* @param _to The address you want to transfer to.
* @param _value The amount of tokens to be transferred.
* @return true on success.
*/
function transferFrom(
address _from,
address _to,
uint256 _value
) external returns (bool) {
require(_to != address(0), "Transfer to zero address");
uint256 userAllowance = allowances[_from][msg.sender];
require(_value <= userAllowance, "Allowance exceeded");
unchecked {
allowances[_from][msg.sender] = userAllowance - _value;
}
_executeTransfer(_from, _to, _value);
emit Transfer(_from, _to, _value);
return true;
}
function _executeTransfer(
address _from,
address _to,
uint256 _value
) internal {
(
int256 fromRebasingCreditsDiff,
int256 fromNonRebasingSupplyDiff
) = _adjustAccount(_from, -_value.toInt256());
(
int256 toRebasingCreditsDiff,
int256 toNonRebasingSupplyDiff
) = _adjustAccount(_to, _value.toInt256());
_adjustGlobals(
fromRebasingCreditsDiff + toRebasingCreditsDiff,
fromNonRebasingSupplyDiff + toNonRebasingSupplyDiff
);
}
function _adjustAccount(address _account, int256 _balanceChange)
internal
returns (int256 rebasingCreditsDiff, int256 nonRebasingSupplyDiff)
{
RebaseOptions state = rebaseState[_account];
int256 currentBalance = balanceOf(_account).toInt256();
if (currentBalance + _balanceChange < 0) {
revert("Transfer amount exceeds balance");
}
uint256 newBalance = (currentBalance + _balanceChange).toUint256();
if (state == RebaseOptions.YieldDelegationSource) {
address target = yieldTo[_account];
uint256 targetOldBalance = balanceOf(target);
uint256 targetNewCredits = _balanceToRebasingCredits(
targetOldBalance + newBalance
);
rebasingCreditsDiff =
targetNewCredits.toInt256() -
creditBalances[target].toInt256();
creditBalances[_account] = newBalance;
creditBalances[target] = targetNewCredits;
} else if (state == RebaseOptions.YieldDelegationTarget) {
uint256 newCredits = _balanceToRebasingCredits(
newBalance + creditBalances[yieldFrom[_account]]
);
rebasingCreditsDiff =
newCredits.toInt256() -
creditBalances[_account].toInt256();
creditBalances[_account] = newCredits;
} else {
_autoMigrate(_account);
uint256 alternativeCreditsPerTokenMem = alternativeCreditsPerToken[
_account
];
if (alternativeCreditsPerTokenMem > 0) {
nonRebasingSupplyDiff = _balanceChange;
if (alternativeCreditsPerTokenMem != 1e18) {
alternativeCreditsPerToken[_account] = 1e18;
}
creditBalances[_account] = newBalance;
} else {
uint256 newCredits = _balanceToRebasingCredits(newBalance);
rebasingCreditsDiff =
newCredits.toInt256() -
creditBalances[_account].toInt256();
creditBalances[_account] = newCredits;
}
}
}
function _adjustGlobals(
int256 _rebasingCreditsDiff,
int256 _nonRebasingSupplyDiff
) internal {
if (_rebasingCreditsDiff != 0) {
rebasingCredits_ = (rebasingCredits_.toInt256() +
_rebasingCreditsDiff).toUint256();
}
if (_nonRebasingSupplyDiff != 0) {
nonRebasingSupply = (nonRebasingSupply.toInt256() +
_nonRebasingSupplyDiff).toUint256();
}
}
/**
* @notice Function to check the amount of tokens that _owner has allowed
* to `_spender`.
* @param _owner The address which owns the funds.
* @param _spender The address which will spend the funds.
* @return The number of tokens still available for the _spender.
*/
function allowance(address _owner, address _spender)
external
view
returns (uint256)
{
return allowances[_owner][_spender];
}
/**
* @notice Approve the passed address to spend the specified amount of
* tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
* @return true on success.
*/
function approve(address _spender, uint256 _value) external returns (bool) {
allowances[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @notice Creates `_amount` tokens and assigns them to `_account`,
* increasing the total supply.
*/
function mint(address _account, uint256 _amount) external onlyVault {
require(_account != address(0), "Mint to the zero address");
// Account
(
int256 toRebasingCreditsDiff,
int256 toNonRebasingSupplyDiff
) = _adjustAccount(_account, _amount.toInt256());
// Globals
_adjustGlobals(toRebasingCreditsDiff, toNonRebasingSupplyDiff);
totalSupply = totalSupply + _amount;
require(totalSupply < MAX_SUPPLY, "Max supply");
emit Transfer(address(0), _account, _amount);
}
/**
* @notice Destroys `_amount` tokens from `_account`,
* reducing the total supply.
*/
function burn(address _account, uint256 _amount) external onlyVault {
require(_account != address(0), "Burn from the zero address");
if (_amount == 0) {
return;
}
// Account
(
int256 toRebasingCreditsDiff,
int256 toNonRebasingSupplyDiff
) = _adjustAccount(_account, -_amount.toInt256());
// Globals
_adjustGlobals(toRebasingCreditsDiff, toNonRebasingSupplyDiff);
totalSupply = totalSupply - _amount;
emit Transfer(_account, address(0), _amount);
}
/**
* @dev Get the credits per token for an account. Returns a fixed amount
* if the account is non-rebasing.
* @param _account Address of the account.
*/
function _creditsPerToken(address _account)
internal
view
returns (uint256)
{
uint256 alternativeCreditsPerTokenMem = alternativeCreditsPerToken[
_account
];
if (alternativeCreditsPerTokenMem != 0) {
return alternativeCreditsPerTokenMem;
} else {
return rebasingCreditsPerToken_;
}
}
/**
* @dev Auto migrate contracts to be non rebasing,
* unless they have opted into yield.
* @param _account Address of the account.
*/
function _autoMigrate(address _account) internal {
bool isContract = _account.code.length > 0;
// In previous code versions, contracts would not have had their
// rebaseState[_account] set to RebaseOptions.NonRebasing when migrated
// therefore we check the actual accounting used on the account instead.
if (
isContract &&
rebaseState[_account] == RebaseOptions.NotSet &&
alternativeCreditsPerToken[_account] == 0
) {
_rebaseOptOut(_account);
}
}
/**
* @dev Calculates credits from contract's global rebasingCreditsPerToken_, and
* also balance that corresponds to those credits. The latter is important
* when adjusting the contract's global nonRebasingSupply to circumvent any
* possible rounding errors.
*
* @param _balance Balance of the account.
*/
function _balanceToRebasingCredits(uint256 _balance)
internal
view
returns (uint256 rebasingCredits)
{
// Rounds up, because we need to ensure that accounts always have
// at least the balance that they should have.
// Note this should always be used on an absolute account value,
// not on a possibly negative diff, because then the rounding would be wrong.
return ((_balance) * rebasingCreditsPerToken_ + 1e18 - 1) / 1e18;
}
/**
* @notice The calling account will start receiving yield after a successful call.
* @param _account Address of the account.
*/
function governanceRebaseOptIn(address _account) external onlyGovernor {
require(_account != address(0), "Zero address not allowed");
_rebaseOptIn(_account);
}
/**
* @notice The calling account will start receiving yield after a successful call.
*/
function rebaseOptIn() external {
_rebaseOptIn(msg.sender);
}
function _rebaseOptIn(address _account) internal {
uint256 balance = balanceOf(_account);
// prettier-ignore
require(
alternativeCreditsPerToken[_account] > 0 ||
// Accounts may explicitly `rebaseOptIn` regardless of
// accounting if they have a 0 balance.
creditBalances[_account] == 0
,
"Account must be non-rebasing"
);
RebaseOptions state = rebaseState[_account];
// prettier-ignore
require(
state == RebaseOptions.StdNonRebasing ||
state == RebaseOptions.NotSet,
"Only standard non-rebasing accounts can opt in"
);
uint256 newCredits = _balanceToRebasingCredits(balance);
// Account
rebaseState[_account] = RebaseOptions.StdRebasing;
alternativeCreditsPerToken[_account] = 0;
creditBalances[_account] = newCredits;
// Globals
_adjustGlobals(newCredits.toInt256(), -balance.toInt256());
emit AccountRebasingEnabled(_account);
}
/**
* @notice The calling account will no longer receive yield
*/
function rebaseOptOut() external {
_rebaseOptOut(msg.sender);
}
function _rebaseOptOut(address _account) internal {
require(
alternativeCreditsPerToken[_account] == 0,
"Account must be rebasing"
);
RebaseOptions state = rebaseState[_account];
require(
state == RebaseOptions.StdRebasing || state == RebaseOptions.NotSet,
"Only standard rebasing accounts can opt out"
);
uint256 oldCredits = creditBalances[_account];
uint256 balance = balanceOf(_account);
// Account
rebaseState[_account] = RebaseOptions.StdNonRebasing;
alternativeCreditsPerToken[_account] = 1e18;
creditBalances[_account] = balance;
// Globals
_adjustGlobals(-oldCredits.toInt256(), balance.toInt256());
emit AccountRebasingDisabled(_account);
}
/**
* @notice Distribute yield to users. This changes the exchange rate
* between "credits" and OUSD tokens to change rebasing user's balances.
* @param _newTotalSupply New total supply of OUSD.
*/
function changeSupply(uint256 _newTotalSupply) external onlyVault {
require(totalSupply > 0, "Cannot increase 0 supply");
if (totalSupply == _newTotalSupply) {
emit TotalSupplyUpdatedHighres(
totalSupply,
rebasingCredits_,
rebasingCreditsPerToken_
);
return;
}
totalSupply = _newTotalSupply > MAX_SUPPLY
? MAX_SUPPLY
: _newTotalSupply;
uint256 rebasingSupply = totalSupply - nonRebasingSupply;
// round up in the favour of the protocol
rebasingCreditsPerToken_ =
(rebasingCredits_ * 1e18 + rebasingSupply - 1) /
rebasingSupply;
require(rebasingCreditsPerToken_ > 0, "Invalid change in supply");
emit TotalSupplyUpdatedHighres(
totalSupply,
rebasingCredits_,
rebasingCreditsPerToken_
);
}
/*
* @notice Send the yield from one account to another account.
* Each account keeps its own balances.
*/
function delegateYield(address _from, address _to) external onlyGovernor {
require(_from != address(0), "Zero from address not allowed");
require(_to != address(0), "Zero to address not allowed");
require(_from != _to, "Cannot delegate to self");
require(
yieldFrom[_to] == address(0) &&
yieldTo[_to] == address(0) &&
yieldFrom[_from] == address(0) &&
yieldTo[_from] == address(0),
"Blocked by existing yield delegation"
);
RebaseOptions stateFrom = rebaseState[_from];
RebaseOptions stateTo = rebaseState[_to];
require(
stateFrom == RebaseOptions.NotSet ||
stateFrom == RebaseOptions.StdNonRebasing ||
stateFrom == RebaseOptions.StdRebasing,
"Invalid rebaseState from"
);
require(
stateTo == RebaseOptions.NotSet ||
stateTo == RebaseOptions.StdNonRebasing ||
stateTo == RebaseOptions.StdRebasing,
"Invalid rebaseState to"
);
if (alternativeCreditsPerToken[_from] == 0) {
_rebaseOptOut(_from);
}
if (alternativeCreditsPerToken[_to] > 0) {
_rebaseOptIn(_to);
}
uint256 fromBalance = balanceOf(_from);
uint256 toBalance = balanceOf(_to);
uint256 oldToCredits = creditBalances[_to];
uint256 newToCredits = _balanceToRebasingCredits(
fromBalance + toBalance
);
// Set up the bidirectional links
yieldTo[_from] = _to;
yieldFrom[_to] = _from;
// Local
rebaseState[_from] = RebaseOptions.YieldDelegationSource;
alternativeCreditsPerToken[_from] = 1e18;
creditBalances[_from] = fromBalance;
rebaseState[_to] = RebaseOptions.YieldDelegationTarget;
creditBalances[_to] = newToCredits;
// Global
int256 creditsChange = newToCredits.toInt256() -
oldToCredits.toInt256();
_adjustGlobals(creditsChange, -(fromBalance).toInt256());
emit YieldDelegated(_from, _to);
}
/*
* @notice Stop sending the yield from one account to another account.
*/
function undelegateYield(address _from) external onlyGovernor {
// Require a delegation, which will also ensure a valid delegation
require(yieldTo[_from] != address(0), "Zero address not allowed");
address to = yieldTo[_from];
uint256 fromBalance = balanceOf(_from);
uint256 toBalance = balanceOf(to);
uint256 oldToCredits = creditBalances[to];
uint256 newToCredits = _balanceToRebasingCredits(toBalance);
// Remove the bidirectional links
yieldFrom[to] = address(0);
yieldTo[_from] = address(0);
// Local
rebaseState[_from] = RebaseOptions.StdNonRebasing;
// alternativeCreditsPerToken[from] already 1e18 from `delegateYield()`
creditBalances[_from] = fromBalance;
rebaseState[to] = RebaseOptions.StdRebasing;
// alternativeCreditsPerToken[to] already 0 from `delegateYield()`
creditBalances[to] = newToCredits;
// Global
int256 creditsChange = newToCredits.toInt256() -
oldToCredits.toInt256();
_adjustGlobals(creditsChange, fromBalance.toInt256());
emit YieldUndelegated(_from, to);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IBasicToken } from "../interfaces/IBasicToken.sol";
library Helpers {
/**
* @notice Fetch the `symbol()` from an ERC20 token
* @dev Grabs the `symbol()` from a contract
* @param _token Address of the ERC20 token
* @return string Symbol of the ERC20 token
*/
function getSymbol(address _token) internal view returns (string memory) {
string memory symbol = IBasicToken(_token).symbol();
return symbol;
}
/**
* @notice Fetch the `decimals()` from an ERC20 token
* @dev Grabs the `decimals()` from a contract and fails if
* the decimal value does not live within a certain range
* @param _token Address of the ERC20 token
* @return uint256 Decimals of the ERC20 token
*/
function getDecimals(address _token) internal view returns (uint256) {
uint256 decimals = IBasicToken(_token).decimals();
require(
decimals >= 4 && decimals <= 18,
"Token must have sufficient decimal places"
);
return decimals;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Base contract any contracts that need to initialize state after deployment.
* @author Origin Protocol Inc
*/
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;
}
}
uint256[50] private ______gap;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { SafeMath } from "@openzeppelin/contracts/utils/math/SafeMath.sol";
// Based on StableMath from Stability Labs Pty. Ltd.
// https://github.com/mstable/mStable-contracts/blob/master/contracts/shared/StableMath.sol
library StableMath {
using SafeMath for uint256;
/**
* @dev Scaling unit for use in specific calculations,
* where 1 * 10**18, or 1e18 represents a unit '1'
*/
uint256 private constant FULL_SCALE = 1e18;
/***************************************
Helpers
****************************************/
/**
* @dev Adjust the scale of an integer
* @param to Decimals to scale to
* @param from Decimals to scale from
*/
function scaleBy(
uint256 x,
uint256 to,
uint256 from
) internal pure returns (uint256) {
if (to > from) {
x = x.mul(10**(to - from));
} else if (to < from) {
// slither-disable-next-line divide-before-multiply
x = x.div(10**(from - to));
}
return x;
}
/***************************************
Precise Arithmetic
****************************************/
/**
* @dev Multiplies two precise units, and then truncates by the full scale
* @param x Left hand input to multiplication
* @param y Right hand input to multiplication
* @return Result after multiplying the two inputs and then dividing by the shared
* scale unit
*/
function mulTruncate(uint256 x, uint256 y) internal pure returns (uint256) {
return mulTruncateScale(x, y, FULL_SCALE);
}
/**
* @dev Multiplies two precise units, and then truncates by the given scale. For example,
* when calculating 90% of 10e18, (10e18 * 9e17) / 1e18 = (9e36) / 1e18 = 9e18
* @param x Left hand input to multiplication
* @param y Right hand input to multiplication
* @param scale Scale unit
* @return Result after multiplying the two inputs and then dividing by the shared
* scale unit
*/
function mulTruncateScale(
uint256 x,
uint256 y,
uint256 scale
) internal pure returns (uint256) {
// e.g. assume scale = fullScale
// z = 10e18 * 9e17 = 9e36
uint256 z = x.mul(y);
// return 9e36 / 1e18 = 9e18
return z.div(scale);
}
/**
* @dev Multiplies two precise units, and then truncates by the full scale, rounding up the result
* @param x Left hand input to multiplication
* @param y Right hand input to multiplication
* @return Result after multiplying the two inputs and then dividing by the shared
* scale unit, rounded up to the closest base unit.
*/
function mulTruncateCeil(uint256 x, uint256 y)
internal
pure
returns (uint256)
{
// e.g. 8e17 * 17268172638 = 138145381104e17
uint256 scaled = x.mul(y);
// e.g. 138145381104e17 + 9.99...e17 = 138145381113.99...e17
uint256 ceil = scaled.add(FULL_SCALE.sub(1));
// e.g. 13814538111.399...e18 / 1e18 = 13814538111
return ceil.div(FULL_SCALE);
}
/**
* @dev Precisely divides two units, by first scaling the left hand operand. Useful
* for finding percentage weightings, i.e. 8e18/10e18 = 80% (or 8e17)
* @param x Left hand input to division
* @param y Right hand input to division
* @return Result after multiplying the left operand by the scale, and
* executing the division on the right hand input.
*/
function divPrecisely(uint256 x, uint256 y)
internal
pure
returns (uint256)
{
// e.g. 8e18 * 1e18 = 8e36
uint256 z = x.mul(FULL_SCALE);
// e.g. 8e36 / 10e18 = 8e17
return z.div(y);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IStrategy } from "../interfaces/IStrategy.sol";
import { IVault } from "../interfaces/IVault.sol";
import { VaultAdmin } from "./VaultAdmin.sol";
/**
* @title OETH VaultAdmin Contract
* @author Origin Protocol Inc
*/
contract OETHVaultAdmin is VaultAdmin {
using SafeERC20 for IERC20;
address public immutable weth;
constructor(address _weth) {
weth = _weth;
}
/// @dev Simplified version of the deposit function as WETH is the only supported asset.
function _depositToStrategy(
address _strategyToAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) internal override {
require(
strategies[_strategyToAddress].isSupported,
"Invalid to Strategy"
);
require(
_assets.length == 1 && _amounts.length == 1 && _assets[0] == weth,
"Only WETH is supported"
);
// Check the there is enough WETH to transfer once the WETH reserved for the withdrawal queue is accounted for
require(_amounts[0] <= _wethAvailable(), "Not enough WETH available");
// Send required amount of funds to the strategy
IERC20(weth).safeTransfer(_strategyToAddress, _amounts[0]);
// Deposit all the funds that have been sent to the strategy
IStrategy(_strategyToAddress).depositAll();
}
function _withdrawFromStrategy(
address _recipient,
address _strategyFromAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) internal override {
super._withdrawFromStrategy(
_recipient,
_strategyFromAddress,
_assets,
_amounts
);
IVault(address(this)).addWithdrawalQueueLiquidity();
}
function _withdrawAllFromStrategy(address _strategyAddr) internal override {
super._withdrawAllFromStrategy(_strategyAddr);
IVault(address(this)).addWithdrawalQueueLiquidity();
}
function _withdrawAllFromStrategies() internal override {
super._withdrawAllFromStrategies();
IVault(address(this)).addWithdrawalQueueLiquidity();
}
/// @dev Calculate how much WETH in the vault is not reserved for the withdrawal queue.
// That is, it is available to be redeemed or deposited into a strategy.
function _wethAvailable() internal view returns (uint256 wethAvailable) {
WithdrawalQueueMetadata memory queue = withdrawalQueueMetadata;
// The amount of WETH that is still to be claimed in the withdrawal queue
uint256 outstandingWithdrawals = queue.queued - queue.claimed;
// The amount of sitting in WETH in the vault
uint256 wethBalance = IERC20(weth).balanceOf(address(this));
// If there is not enough WETH in the vault to cover the outstanding withdrawals
if (wethBalance <= outstandingWithdrawals) {
return 0;
}
return wethBalance - outstandingWithdrawals;
}
function _swapCollateral(
address,
address,
uint256,
uint256,
bytes calldata
) internal pure override returns (uint256) {
revert("Collateral swap not supported");
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title OToken VaultAdmin contract
* @notice The VaultAdmin contract makes configuration and admin calls on the vault.
* @author Origin Protocol Inc
*/
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { IOracle } from "../interfaces/IOracle.sol";
import { ISwapper } from "../interfaces/ISwapper.sol";
import { IVault } from "../interfaces/IVault.sol";
import { StableMath } from "../utils/StableMath.sol";
import "./VaultStorage.sol";
contract VaultAdmin is VaultStorage {
using SafeERC20 for IERC20;
using StableMath for uint256;
/**
* @dev Verifies that the caller is the Governor or Strategist.
*/
modifier onlyGovernorOrStrategist() {
require(
msg.sender == strategistAddr || isGovernor(),
"Caller is not the Strategist or Governor"
);
_;
}
/***************************************
Configuration
****************************************/
/**
* @notice Set address of price provider.
* @param _priceProvider Address of price provider
*/
function setPriceProvider(address _priceProvider) external onlyGovernor {
priceProvider = _priceProvider;
emit PriceProviderUpdated(_priceProvider);
}
/**
* @notice Set a fee in basis points to be charged for a redeem.
* @param _redeemFeeBps Basis point fee to be charged
*/
function setRedeemFeeBps(uint256 _redeemFeeBps) external onlyGovernor {
require(_redeemFeeBps <= 1000, "Redeem fee should not be over 10%");
redeemFeeBps = _redeemFeeBps;
emit RedeemFeeUpdated(_redeemFeeBps);
}
/**
* @notice Set a buffer of assets to keep in the Vault to handle most
* redemptions without needing to spend gas unwinding assets from a Strategy.
* @param _vaultBuffer Percentage using 18 decimals. 100% = 1e18.
*/
function setVaultBuffer(uint256 _vaultBuffer)
external
onlyGovernorOrStrategist
{
require(_vaultBuffer <= 1e18, "Invalid value");
vaultBuffer = _vaultBuffer;
emit VaultBufferUpdated(_vaultBuffer);
}
/**
* @notice Sets the minimum amount of OTokens in a mint to trigger an
* automatic allocation of funds afterwords.
* @param _threshold OToken amount with 18 fixed decimals.
*/
function setAutoAllocateThreshold(uint256 _threshold)
external
onlyGovernor
{
autoAllocateThreshold = _threshold;
emit AllocateThresholdUpdated(_threshold);
}
/**
* @notice Set a minimum amount of OTokens in a mint or redeem that triggers a
* rebase
* @param _threshold OToken amount with 18 fixed decimals.
*/
function setRebaseThreshold(uint256 _threshold) external onlyGovernor {
rebaseThreshold = _threshold;
emit RebaseThresholdUpdated(_threshold);
}
/**
* @notice Set address of Strategist
* @param _address Address of Strategist
*/
function setStrategistAddr(address _address) external onlyGovernor {
strategistAddr = _address;
emit StrategistUpdated(_address);
}
/**
* @notice Set the default Strategy for an asset, i.e. the one which the asset
will be automatically allocated to and withdrawn from
* @param _asset Address of the asset
* @param _strategy Address of the Strategy
*/
function setAssetDefaultStrategy(address _asset, address _strategy)
external
onlyGovernorOrStrategist
{
emit AssetDefaultStrategyUpdated(_asset, _strategy);
// If its a zero address being passed for the strategy we are removing
// the default strategy
if (_strategy != address(0)) {
// Make sure the strategy meets some criteria
require(strategies[_strategy].isSupported, "Strategy not approved");
IStrategy strategy = IStrategy(_strategy);
require(assets[_asset].isSupported, "Asset is not supported");
require(
strategy.supportsAsset(_asset),
"Asset not supported by Strategy"
);
}
assetDefaultStrategies[_asset] = _strategy;
}
/**
* @notice Set maximum amount of OTokens that can at any point be minted and deployed
* to strategy (used only by ConvexOUSDMetaStrategy for now).
* @param _threshold OToken amount with 18 fixed decimals.
*/
function setNetOusdMintForStrategyThreshold(uint256 _threshold)
external
onlyGovernor
{
/**
* Because `netOusdMintedForStrategy` check in vault core works both ways
* (positive and negative) the actual impact of the amount of OToken minted
* could be double the threshold. E.g.:
* - contract has threshold set to 100
* - state of netOusdMinted is -90
* - in effect it can mint 190 OToken and still be within limits
*
* We are somewhat mitigating this behaviour by resetting the netOusdMinted
* counter whenever new threshold is set. So it can only move one threshold
* amount in each direction. This also enables us to reduce the threshold
* amount and not have problems with current netOusdMinted being near
* limits on either side.
*/
netOusdMintedForStrategy = 0;
netOusdMintForStrategyThreshold = _threshold;
emit NetOusdMintForStrategyThresholdChanged(_threshold);
}
/**
* @notice Set the Dripper contract that streams harvested rewards to the vault.
* @param _dripper Address of the Dripper contract.
*/
function setDripper(address _dripper) external onlyGovernor {
dripper = _dripper;
emit DripperChanged(_dripper);
}
/**
* @notice Changes the async withdrawal claim period for OETH & superOETHb
* @param _delay Delay period (should be between 10 mins to 7 days).
* Set to 0 to disable async withdrawals
*/
function setWithdrawalClaimDelay(uint256 _delay) external onlyGovernor {
require(
_delay == 0 || (_delay >= 10 minutes && _delay <= 15 days),
"Invalid claim delay period"
);
withdrawalClaimDelay = _delay;
emit WithdrawalClaimDelayUpdated(_delay);
}
/***************************************
Swaps
****************************************/
/**
* @notice Strategist swaps collateral assets sitting in the vault.
* @param _fromAsset The token address of the asset being sold by the vault.
* @param _toAsset The token address of the asset being purchased by the vault.
* @param _fromAssetAmount The amount of assets being sold by the vault.
* @param _minToAssetAmount The minimum amount of assets to be purchased.
* @param _data implementation specific data. eg 1Inch swap data
* @return toAssetAmount The amount of toAssets that was received from the swap
*/
function swapCollateral(
address _fromAsset,
address _toAsset,
uint256 _fromAssetAmount,
uint256 _minToAssetAmount,
bytes calldata _data
)
external
nonReentrant
onlyGovernorOrStrategist
returns (uint256 toAssetAmount)
{
toAssetAmount = _swapCollateral(
_fromAsset,
_toAsset,
_fromAssetAmount,
_minToAssetAmount,
_data
);
}
function _swapCollateral(
address _fromAsset,
address _toAsset,
uint256 _fromAssetAmount,
uint256 _minToAssetAmount,
bytes calldata _data
) internal virtual returns (uint256 toAssetAmount) {
// Check fromAsset and toAsset are valid
Asset memory fromAssetConfig = assets[_fromAsset];
Asset memory toAssetConfig = assets[_toAsset];
require(fromAssetConfig.isSupported, "From asset is not supported");
require(toAssetConfig.isSupported, "To asset is not supported");
// Load swap config into memory to avoid separate SLOADs
SwapConfig memory config = swapConfig;
// Scope a new block to remove toAssetBalBefore from the scope of swapCollateral.
// This avoids a stack too deep error.
{
uint256 toAssetBalBefore = IERC20(_toAsset).balanceOf(
address(this)
);
// Transfer from assets to the swapper contract
IERC20(_fromAsset).safeTransfer(config.swapper, _fromAssetAmount);
// Call to the Swapper contract to do the actual swap
// The -1 is required for stETH which sometimes transfers 1 wei less than what was specified.
// slither-disable-next-line unused-return
ISwapper(config.swapper).swap(
_fromAsset,
_toAsset,
_fromAssetAmount - 1,
_minToAssetAmount,
_data
);
// Compute the change in asset balance held by the Vault
toAssetAmount =
IERC20(_toAsset).balanceOf(address(this)) -
toAssetBalBefore;
}
// Check the to assets returned is above slippage amount specified by the strategist
require(
toAssetAmount >= _minToAssetAmount,
"Strategist slippage limit"
);
// Scope a new block to remove minOracleToAssetAmount from the scope of swapCollateral.
// This avoids a stack too deep error.
{
// Check the slippage against the Oracle in case the strategist made a mistake or has become malicious.
// to asset amount = from asset amount * from asset price / to asset price
uint256 minOracleToAssetAmount = (_fromAssetAmount *
(1e4 - fromAssetConfig.allowedOracleSlippageBps) *
IOracle(priceProvider).price(_fromAsset)) /
(IOracle(priceProvider).price(_toAsset) *
(1e4 + toAssetConfig.allowedOracleSlippageBps));
// Scale both sides up to 18 decimals to compare
require(
toAssetAmount.scaleBy(18, toAssetConfig.decimals) >=
minOracleToAssetAmount.scaleBy(
18,
fromAssetConfig.decimals
),
"Oracle slippage limit exceeded"
);
}
// Check the vault's total value hasn't gone below the OToken total supply
// by more than the allowed percentage.
require(
IVault(address(this)).totalValue() >=
(oUSD.totalSupply() * ((1e4 - config.allowedUndervalueBps))) /
1e4,
"Allowed value < supply"
);
emit Swapped(_fromAsset, _toAsset, _fromAssetAmount, toAssetAmount);
}
/***************************************
Swap Config
****************************************/
/**
* @notice Set the contract the performs swaps of collateral assets.
* @param _swapperAddr Address of the Swapper contract that implements the ISwapper interface.
*/
function setSwapper(address _swapperAddr) external onlyGovernor {
swapConfig.swapper = _swapperAddr;
emit SwapperChanged(_swapperAddr);
}
/// @notice Contract that swaps the vault's collateral assets
function swapper() external view returns (address swapper_) {
swapper_ = swapConfig.swapper;
}
/**
* @notice Set max allowed percentage the vault total value can drop below the OToken total supply in basis points
* when executing collateral swaps.
* @param _basis Percentage in basis points. eg 100 == 1%
*/
function setSwapAllowedUndervalue(uint16 _basis) external onlyGovernor {
require(_basis < 10001, "Invalid basis points");
swapConfig.allowedUndervalueBps = _basis;
emit SwapAllowedUndervalueChanged(_basis);
}
/**
* @notice Max allowed percentage the vault total value can drop below the OToken total supply in basis points
* when executing a collateral swap.
* For example 100 == 1%
* @return value Percentage in basis points.
*/
function allowedSwapUndervalue() external view returns (uint256 value) {
value = swapConfig.allowedUndervalueBps;
}
/**
* @notice Set the allowed slippage from the Oracle price for collateral asset swaps.
* @param _asset Address of the asset token.
* @param _allowedOracleSlippageBps allowed slippage from Oracle in basis points. eg 20 = 0.2%. Max 10%.
*/
function setOracleSlippage(address _asset, uint16 _allowedOracleSlippageBps)
external
onlyGovernor
{
require(assets[_asset].isSupported, "Asset not supported");
require(_allowedOracleSlippageBps < 1000, "Slippage too high");
assets[_asset].allowedOracleSlippageBps = _allowedOracleSlippageBps;
emit SwapSlippageChanged(_asset, _allowedOracleSlippageBps);
}
/***************************************
Asset Config
****************************************/
/**
* @notice Add a supported asset to the contract, i.e. one that can be
* to mint OTokens.
* @param _asset Address of asset
*/
function supportAsset(address _asset, uint8 _unitConversion)
external
virtual
onlyGovernor
{
require(!assets[_asset].isSupported, "Asset already supported");
assets[_asset] = Asset({
isSupported: true,
unitConversion: UnitConversion(_unitConversion),
decimals: 0, // will be overridden in _cacheDecimals
allowedOracleSlippageBps: 0 // 0% by default
});
_cacheDecimals(_asset);
allAssets.push(_asset);
// Verify that our oracle supports the asset
// slither-disable-next-line unused-return
IOracle(priceProvider).price(_asset);
emit AssetSupported(_asset);
}
/**
* @notice Remove a supported asset from the Vault
* @param _asset Address of asset
*/
function removeAsset(address _asset) external onlyGovernor {
require(assets[_asset].isSupported, "Asset not supported");
require(
IVault(address(this)).checkBalance(_asset) <= 1e13,
"Vault still holds asset"
);
uint256 assetsCount = allAssets.length;
uint256 assetIndex = assetsCount; // initialize at invaid index
for (uint256 i = 0; i < assetsCount; ++i) {
if (allAssets[i] == _asset) {
assetIndex = i;
break;
}
}
// Note: If asset is not found in `allAssets`, the following line
// will revert with an out-of-bound error. However, there's no
// reason why an asset would have `Asset.isSupported = true` but
// not exist in `allAssets`.
// Update allAssets array
allAssets[assetIndex] = allAssets[assetsCount - 1];
allAssets.pop();
// Reset default strategy
assetDefaultStrategies[_asset] = address(0);
emit AssetDefaultStrategyUpdated(_asset, address(0));
// Remove asset from storage
delete assets[_asset];
emit AssetRemoved(_asset);
}
/**
* @notice Cache decimals on OracleRouter for a particular asset. This action
* is required before that asset's price can be accessed.
* @param _asset Address of asset token
*/
function cacheDecimals(address _asset) external onlyGovernor {
_cacheDecimals(_asset);
}
/***************************************
Strategy Config
****************************************/
/**
* @notice Add a strategy to the Vault.
* @param _addr Address of the strategy to add
*/
function approveStrategy(address _addr) external onlyGovernor {
require(!strategies[_addr].isSupported, "Strategy already approved");
strategies[_addr] = Strategy({ isSupported: true, _deprecated: 0 });
allStrategies.push(_addr);
emit StrategyApproved(_addr);
}
/**
* @notice Remove a strategy from the Vault.
* @param _addr Address of the strategy to remove
*/
function removeStrategy(address _addr) external onlyGovernor {
require(strategies[_addr].isSupported, "Strategy not approved");
uint256 assetCount = allAssets.length;
for (uint256 i = 0; i < assetCount; ++i) {
require(
assetDefaultStrategies[allAssets[i]] != _addr,
"Strategy is default for an asset"
);
}
// Initialize strategyIndex with out of bounds result so function will
// revert if no valid index found
uint256 stratCount = allStrategies.length;
uint256 strategyIndex = stratCount;
for (uint256 i = 0; i < stratCount; ++i) {
if (allStrategies[i] == _addr) {
strategyIndex = i;
break;
}
}
if (strategyIndex < stratCount) {
allStrategies[strategyIndex] = allStrategies[stratCount - 1];
allStrategies.pop();
// Mark the strategy as not supported
strategies[_addr].isSupported = false;
// Withdraw all assets
IStrategy strategy = IStrategy(_addr);
strategy.withdrawAll();
emit StrategyRemoved(_addr);
}
}
/***************************************
Strategies
****************************************/
/**
* @notice Deposit multiple assets from the vault into the strategy.
* @param _strategyToAddress Address of the Strategy to deposit assets into.
* @param _assets Array of asset address that will be deposited into the strategy.
* @param _amounts Array of amounts of each corresponding asset to deposit.
*/
function depositToStrategy(
address _strategyToAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) external onlyGovernorOrStrategist nonReentrant {
_depositToStrategy(_strategyToAddress, _assets, _amounts);
}
function _depositToStrategy(
address _strategyToAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) internal virtual {
require(
strategies[_strategyToAddress].isSupported,
"Invalid to Strategy"
);
require(_assets.length == _amounts.length, "Parameter length mismatch");
uint256 assetCount = _assets.length;
for (uint256 i = 0; i < assetCount; ++i) {
address assetAddr = _assets[i];
require(
IStrategy(_strategyToAddress).supportsAsset(assetAddr),
"Asset unsupported"
);
// Send required amount of funds to the strategy
IERC20(assetAddr).safeTransfer(_strategyToAddress, _amounts[i]);
}
// Deposit all the funds that have been sent to the strategy
IStrategy(_strategyToAddress).depositAll();
}
/**
* @notice Withdraw multiple assets from the strategy to the vault.
* @param _strategyFromAddress Address of the Strategy to withdraw assets from.
* @param _assets Array of asset address that will be withdrawn from the strategy.
* @param _amounts Array of amounts of each corresponding asset to withdraw.
*/
function withdrawFromStrategy(
address _strategyFromAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) external onlyGovernorOrStrategist nonReentrant {
_withdrawFromStrategy(
address(this),
_strategyFromAddress,
_assets,
_amounts
);
}
/**
* @param _recipient can either be a strategy or the Vault
*/
function _withdrawFromStrategy(
address _recipient,
address _strategyFromAddress,
address[] calldata _assets,
uint256[] calldata _amounts
) internal virtual {
require(
strategies[_strategyFromAddress].isSupported,
"Invalid from Strategy"
);
require(_assets.length == _amounts.length, "Parameter length mismatch");
uint256 assetCount = _assets.length;
for (uint256 i = 0; i < assetCount; ++i) {
// Withdraw from Strategy to the recipient
IStrategy(_strategyFromAddress).withdraw(
_recipient,
_assets[i],
_amounts[i]
);
}
}
/**
* @notice Sets the maximum allowable difference between
* total supply and backing assets' value.
*/
function setMaxSupplyDiff(uint256 _maxSupplyDiff) external onlyGovernor {
maxSupplyDiff = _maxSupplyDiff;
emit MaxSupplyDiffChanged(_maxSupplyDiff);
}
/**
* @notice Sets the trusteeAddress that can receive a portion of yield.
* Setting to the zero address disables this feature.
*/
function setTrusteeAddress(address _address) external onlyGovernor {
trusteeAddress = _address;
emit TrusteeAddressChanged(_address);
}
/**
* @notice Sets the TrusteeFeeBps to the percentage of yield that should be
* received in basis points.
*/
function setTrusteeFeeBps(uint256 _basis) external onlyGovernor {
require(_basis <= 5000, "basis cannot exceed 50%");
trusteeFeeBps = _basis;
emit TrusteeFeeBpsChanged(_basis);
}
/**
* @notice Set OToken Metapool strategy
* @param _ousdMetaStrategy Address of OToken metapool strategy
*/
function setOusdMetaStrategy(address _ousdMetaStrategy)
external
onlyGovernor
{
ousdMetaStrategy = _ousdMetaStrategy;
emit OusdMetaStrategyUpdated(_ousdMetaStrategy);
}
/***************************************
Pause
****************************************/
/**
* @notice Set the deposit paused flag to true to prevent rebasing.
*/
function pauseRebase() external onlyGovernorOrStrategist {
rebasePaused = true;
emit RebasePaused();
}
/**
* @notice Set the deposit paused flag to true to allow rebasing.
*/
function unpauseRebase() external onlyGovernorOrStrategist {
rebasePaused = false;
emit RebaseUnpaused();
}
/**
* @notice Set the deposit paused flag to true to prevent capital movement.
*/
function pauseCapital() external onlyGovernorOrStrategist {
capitalPaused = true;
emit CapitalPaused();
}
/**
* @notice Set the deposit paused flag to false to enable capital movement.
*/
function unpauseCapital() external onlyGovernorOrStrategist {
capitalPaused = false;
emit CapitalUnpaused();
}
/***************************************
Utils
****************************************/
/**
* @notice Transfer token to governor. Intended for recovering tokens stuck in
* contract, i.e. mistaken sends.
* @param _asset Address for the asset
* @param _amount Amount of the asset to transfer
*/
function transferToken(address _asset, uint256 _amount)
external
onlyGovernor
{
require(!assets[_asset].isSupported, "Only unsupported assets");
IERC20(_asset).safeTransfer(governor(), _amount);
}
/***************************************
Strategies Admin
****************************************/
/**
* @notice Withdraws all assets from the strategy and sends assets to the Vault.
* @param _strategyAddr Strategy address.
*/
function withdrawAllFromStrategy(address _strategyAddr)
external
onlyGovernorOrStrategist
{
_withdrawAllFromStrategy(_strategyAddr);
}
function _withdrawAllFromStrategy(address _strategyAddr) internal virtual {
require(
strategies[_strategyAddr].isSupported,
"Strategy is not supported"
);
IStrategy strategy = IStrategy(_strategyAddr);
strategy.withdrawAll();
}
/**
* @notice Withdraws all assets from all the strategies and sends assets to the Vault.
*/
function withdrawAllFromStrategies() external onlyGovernorOrStrategist {
_withdrawAllFromStrategies();
}
function _withdrawAllFromStrategies() internal virtual {
uint256 stratCount = allStrategies.length;
for (uint256 i = 0; i < stratCount; ++i) {
IStrategy(allStrategies[i]).withdrawAll();
}
}
/***************************************
Utils
****************************************/
function _cacheDecimals(address token) internal {
Asset storage tokenAsset = assets[token];
if (tokenAsset.decimals != 0) {
return;
}
uint8 decimals = IBasicToken(token).decimals();
require(decimals >= 6 && decimals <= 18, "Unexpected precision");
tokenAsset.decimals = decimals;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title OToken VaultStorage contract
* @notice The VaultStorage contract defines the storage for the Vault contracts
* @author Origin Protocol Inc
*/
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { IStrategy } from "../interfaces/IStrategy.sol";
import { Governable } from "../governance/Governable.sol";
import { OUSD } from "../token/OUSD.sol";
import { Initializable } from "../utils/Initializable.sol";
import "../utils/Helpers.sol";
contract VaultStorage is Initializable, Governable {
using SafeERC20 for IERC20;
event AssetSupported(address _asset);
event AssetRemoved(address _asset);
event AssetDefaultStrategyUpdated(address _asset, address _strategy);
event AssetAllocated(address _asset, address _strategy, uint256 _amount);
event StrategyApproved(address _addr);
event StrategyRemoved(address _addr);
event Mint(address _addr, uint256 _value);
event Redeem(address _addr, uint256 _value);
event CapitalPaused();
event CapitalUnpaused();
event RebasePaused();
event RebaseUnpaused();
event VaultBufferUpdated(uint256 _vaultBuffer);
event OusdMetaStrategyUpdated(address _ousdMetaStrategy);
event RedeemFeeUpdated(uint256 _redeemFeeBps);
event PriceProviderUpdated(address _priceProvider);
event AllocateThresholdUpdated(uint256 _threshold);
event RebaseThresholdUpdated(uint256 _threshold);
event StrategistUpdated(address _address);
event MaxSupplyDiffChanged(uint256 maxSupplyDiff);
event YieldDistribution(address _to, uint256 _yield, uint256 _fee);
event TrusteeFeeBpsChanged(uint256 _basis);
event TrusteeAddressChanged(address _address);
event NetOusdMintForStrategyThresholdChanged(uint256 _threshold);
event SwapperChanged(address _address);
event SwapAllowedUndervalueChanged(uint256 _basis);
event SwapSlippageChanged(address _asset, uint256 _basis);
event Swapped(
address indexed _fromAsset,
address indexed _toAsset,
uint256 _fromAssetAmount,
uint256 _toAssetAmount
);
event StrategyAddedToMintWhitelist(address indexed strategy);
event StrategyRemovedFromMintWhitelist(address indexed strategy);
event DripperChanged(address indexed _dripper);
event WithdrawalRequested(
address indexed _withdrawer,
uint256 indexed _requestId,
uint256 _amount,
uint256 _queued
);
event WithdrawalClaimed(
address indexed _withdrawer,
uint256 indexed _requestId,
uint256 _amount
);
event WithdrawalClaimable(uint256 _claimable, uint256 _newClaimable);
event WithdrawalClaimDelayUpdated(uint256 _newDelay);
// Assets supported by the Vault, i.e. Stablecoins
enum UnitConversion {
DECIMALS,
GETEXCHANGERATE
}
// Changed to fit into a single storage slot so the decimals needs to be recached
struct Asset {
// Note: OETHVaultCore doesn't use `isSupported` when minting,
// redeeming or checking balance of assets.
bool isSupported;
UnitConversion unitConversion;
uint8 decimals;
// Max allowed slippage from the Oracle price when swapping collateral assets in basis points.
// For example 40 == 0.4% slippage
uint16 allowedOracleSlippageBps;
}
/// @dev mapping of supported vault assets to their configuration
// slither-disable-next-line uninitialized-state
mapping(address => Asset) internal assets;
/// @dev list of all assets supported by the vault.
// slither-disable-next-line uninitialized-state
address[] internal allAssets;
// Strategies approved for use by the Vault
struct Strategy {
bool isSupported;
uint256 _deprecated; // Deprecated storage slot
}
/// @dev mapping of strategy contracts to their configuration
// slither-disable-next-line uninitialized-state
mapping(address => Strategy) internal strategies;
/// @dev list of all vault strategies
address[] internal allStrategies;
/// @notice Address of the Oracle price provider contract
// slither-disable-next-line uninitialized-state
address public priceProvider;
/// @notice pause rebasing if true
bool public rebasePaused = false;
/// @notice pause operations that change the OToken supply.
/// eg mint, redeem, allocate, mint/burn for strategy
bool public capitalPaused = true;
/// @notice Redemption fee in basis points. eg 50 = 0.5%
uint256 public redeemFeeBps;
/// @notice Percentage of assets to keep in Vault to handle (most) withdrawals. 100% = 1e18.
uint256 public vaultBuffer;
/// @notice OToken mints over this amount automatically allocate funds. 18 decimals.
uint256 public autoAllocateThreshold;
/// @notice OToken mints over this amount automatically rebase. 18 decimals.
uint256 public rebaseThreshold;
/// @dev Address of the OToken token. eg OUSD or OETH.
// slither-disable-next-line uninitialized-state
OUSD internal oUSD;
/// @dev Storage slot for the address of the VaultAdmin contract that is delegated to
// keccak256("OUSD.vault.governor.admin.impl");
bytes32 constant adminImplPosition =
0xa2bd3d3cf188a41358c8b401076eb59066b09dec5775650c0de4c55187d17bd9;
/// @dev Address of the contract responsible for post rebase syncs with AMMs
address private _deprecated_rebaseHooksAddr = address(0);
/// @dev Deprecated: Address of Uniswap
// slither-disable-next-line constable-states
address private _deprecated_uniswapAddr = address(0);
/// @notice Address of the Strategist
address public strategistAddr = address(0);
/// @notice Mapping of asset address to the Strategy that they should automatically
// be allocated to
// slither-disable-next-line uninitialized-state
mapping(address => address) public assetDefaultStrategies;
/// @notice Max difference between total supply and total value of assets. 18 decimals.
// slither-disable-next-line uninitialized-state
uint256 public maxSupplyDiff;
/// @notice Trustee contract that can collect a percentage of yield
address public trusteeAddress;
/// @notice Amount of yield collected in basis points. eg 2000 = 20%
uint256 public trusteeFeeBps;
/// @dev Deprecated: Tokens that should be swapped for stablecoins
address[] private _deprecated_swapTokens;
uint256 constant MINT_MINIMUM_UNIT_PRICE = 0.998e18;
/// @notice Metapool strategy that is allowed to mint/burn OTokens without changing collateral
// slither-disable-start constable-states
// slither-disable-next-line uninitialized-state
address public ousdMetaStrategy;
/// @notice How much OTokens are currently minted by the strategy
// slither-disable-next-line uninitialized-state
int256 public netOusdMintedForStrategy;
/// @notice How much net total OTokens are allowed to be minted by all strategies
// slither-disable-next-line uninitialized-state
uint256 public netOusdMintForStrategyThreshold;
// slither-disable-end constable-states
uint256 constant MIN_UNIT_PRICE_DRIFT = 0.7e18;
uint256 constant MAX_UNIT_PRICE_DRIFT = 1.3e18;
/// @notice Collateral swap configuration.
/// @dev is packed into a single storage slot to save gas.
struct SwapConfig {
// Contract that swaps the vault's collateral assets
address swapper;
// Max allowed percentage the total value can drop below the total supply in basis points.
// For example 100 == 1%
uint16 allowedUndervalueBps;
}
SwapConfig internal swapConfig = SwapConfig(address(0), 0);
// List of strategies that can mint oTokens directly
// Used in OETHBaseVaultCore
// slither-disable-next-line uninitialized-state
mapping(address => bool) public isMintWhitelistedStrategy;
/// @notice Address of the Dripper contract that streams harvested rewards to the Vault
/// @dev The vault is proxied so needs to be set with setDripper against the proxy contract.
// slither-disable-start constable-states
// slither-disable-next-line uninitialized-state
address public dripper;
// slither-disable-end constable-states
/// Withdrawal Queue Storage /////
struct WithdrawalQueueMetadata {
// cumulative total of all withdrawal requests included the ones that have already been claimed
uint128 queued;
// cumulative total of all the requests that can be claimed including the ones that have already been claimed
uint128 claimable;
// total of all the requests that have been claimed
uint128 claimed;
// index of the next withdrawal request starting at 0
uint128 nextWithdrawalIndex;
}
/// @notice Global metadata for the withdrawal queue including:
/// queued - cumulative total of all withdrawal requests included the ones that have already been claimed
/// claimable - cumulative total of all the requests that can be claimed including the ones already claimed
/// claimed - total of all the requests that have been claimed
/// nextWithdrawalIndex - index of the next withdrawal request starting at 0
// slither-disable-next-line uninitialized-state
WithdrawalQueueMetadata public withdrawalQueueMetadata;
struct WithdrawalRequest {
address withdrawer;
bool claimed;
uint40 timestamp; // timestamp of the withdrawal request
// Amount of oTokens to redeem. eg OETH
uint128 amount;
// cumulative total of all withdrawal requests including this one.
// this request can be claimed when this queued amount is less than or equal to the queue's claimable amount.
uint128 queued;
}
/// @notice Mapping of withdrawal request indices to the user withdrawal request data
mapping(uint256 => WithdrawalRequest) public withdrawalRequests;
/// @notice Sets a minimum delay that is required to elapse between
/// requesting async withdrawals and claiming the request.
/// When set to 0 async withdrawals are disabled.
// slither-disable-start constable-states
// slither-disable-next-line uninitialized-state
uint256 public withdrawalClaimDelay;
// slither-disable-end constable-states
// For future use
uint256[44] private __gap;
/**
* @notice set the implementation for the admin, this needs to be in a base class else we cannot set it
* @param newImpl address of the implementation
*/
function setAdminImpl(address newImpl) external onlyGovernor {
require(
Address.isContract(newImpl),
"new implementation is not a contract"
);
bytes32 position = adminImplPosition;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, newImpl)
}
}
}{
"optimizer": {
"enabled": true,
"runs": 200
},
"evmVersion": "paris",
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"metadata": {
"useLiteralContent": true
},
"libraries": {}
}Contract Security Audit
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Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000039e2fb66102314ce7b64ce5ce3e5183bc94ad38
-----Decoded View---------------
Arg [0] : _wS (address): 0x039e2fB66102314Ce7b64Ce5Ce3E5183bc94aD38
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000039e2fb66102314ce7b64ce5ce3e5183bc94ad38
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Multichain Portfolio | 30 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.