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Contract Name:
AMTransparentUpgradeableProxy
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/TransparentUpgradeableProxy.sol) pragma solidity 0.8.20; import {ERC1967Utils} from "openzeppelin-contracts/proxy/ERC1967/ERC1967Utils.sol"; import {ERC1967Proxy} from "openzeppelin-contracts/proxy/ERC1967/ERC1967Proxy.sol"; import {IERC1967} from "openzeppelin-contracts/interfaces/IERC1967.sol"; import {AMProxyAdmin} from "./AMProxyAdmin.sol"; /** * @dev Interface for {TransparentUpgradeableProxy}. In order to implement transparency, {TransparentUpgradeableProxy} * does not implement this interface directly, and its upgradeability mechanism is implemented by an internal dispatch * mechanism. The compiler is unaware that these functions are implemented by {TransparentUpgradeableProxy} and will not * include them in the ABI so this interface must be used to interact with it. */ interface IAMTransparentUpgradeableProxy is IERC1967 { function upgradeToAndCall(address, bytes calldata) external payable; } /** * @dev This contract implements a proxy that is upgradeable through an associated {ProxyAdmin} instance. * * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector * clashing], which can potentially be used in an attack, this contract uses the * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two * things that go hand in hand: * * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if * that call matches the {ITransparentUpgradeableProxy-upgradeToAndCall} function exposed by the proxy itself. * 2. If the admin calls the proxy, it can call the `upgradeToAndCall` function but any other call won't be forwarded to * the implementation. If the admin tries to call a function on the implementation it will fail with an error indicating * the proxy admin cannot fallback to the target implementation. * * These properties mean that the admin account can only be used for upgrading the proxy, so it's best if it's a * dedicated account that is not used for anything else. This will avoid headaches due to sudden errors when trying to * call a function from the proxy implementation. For this reason, the proxy deploys an instance of {ProxyAdmin} and * allows upgrades only if they come through it. You should think of the `ProxyAdmin` instance as the administrative * interface of the proxy, including the ability to change who can trigger upgrades by transferring ownership. * * NOTE: The real interface of this proxy is that defined in `ITransparentUpgradeableProxy`. This contract does not * inherit from that interface, and instead `upgradeToAndCall` is implicitly implemented using a custom dispatch * mechanism in `_fallback`. Consequently, the compiler will not produce an ABI for this contract. This is necessary to * fully implement transparency without decoding reverts caused by selector clashes between the proxy and the * implementation. * * NOTE: This proxy does not inherit from {Context} deliberately. The {ProxyAdmin} of this contract won't send a * meta-transaction in any way, and any other meta-transaction setup should be made in the implementation contract. * * IMPORTANT: This contract avoids unnecessary storage reads by setting the admin only during construction as an * immutable variable, preventing any changes thereafter. However, the admin slot defined in ERC-1967 can still be * overwritten by the implementation logic pointed to by this proxy. In such cases, the contract may end up in an * undesirable state where the admin slot is different from the actual admin. * * WARNING: It is not recommended to extend this contract to add additional external functions. If you do so, the * compiler will not check that there are no selector conflicts, due to the note above. A selector clash between any new * function and the functions declared in {ITransparentUpgradeableProxy} will be resolved in favor of the new one. This * could render the `upgradeToAndCall` function inaccessible, preventing upgradeability and compromising transparency. */ contract AMTransparentUpgradeableProxy is ERC1967Proxy { // An immutable address for the admin to avoid unnecessary SLOADs before each call // at the expense of removing the ability to change the admin once it's set. // This is acceptable if the admin is always a ProxyAdmin instance or similar contract // with its own ability to transfer the permissions to another account. address private immutable _admin; /** * @dev The initial authority is not a valid account. (eg. `address(0)`) */ error AMInvalidInitialAuthority(address initialAuthority); /** * @dev The proxy caller is the current admin, and can't fallback to the proxy target. */ error ProxyDeniedAdminAccess(); /** * @dev Initializes an upgradeable proxy managed by an instance of a {ProxyAdmin} with an `initialOwner`, * backed by the implementation at `_logic`, and optionally initialized with `_data` as explained in * {ERC1967Proxy-constructor}. */ constructor( address _logic, address initialAuthority, bytes memory _data ) payable ERC1967Proxy(_logic, _data) { if (initialAuthority == address(0)) { revert AMInvalidInitialAuthority(address(0)); } _admin = address(new AMProxyAdmin(initialAuthority)); // Set the storage value and emit an event for ERC-1967 compatibility ERC1967Utils.changeAdmin(_proxyAdmin()); } /** * @dev Returns the admin of this proxy. */ function _proxyAdmin() internal virtual returns (address) { return _admin; } /** * @dev If caller is the admin process the call internally, otherwise transparently fallback to the proxy behavior. */ function _fallback() internal virtual override { if (msg.sender == _proxyAdmin()) { if (msg.sig != IAMTransparentUpgradeableProxy.upgradeToAndCall.selector) { revert ProxyDeniedAdminAccess(); } else { _dispatchUpgradeToAndCall(); } } else { super._fallback(); } } /** * @dev Upgrade the implementation of the proxy. See {ERC1967Utils-upgradeToAndCall}. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ function _dispatchUpgradeToAndCall() private { (address newImplementation, bytes memory data) = abi.decode(msg.data[4:], (address, bytes)); ERC1967Utils.upgradeToAndCall(newImplementation, data); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol) pragma solidity ^0.8.20; import {IBeacon} from "../beacon/IBeacon.sol"; import {Address} from "../../utils/Address.sol"; import {StorageSlot} from "../../utils/StorageSlot.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. */ library ERC1967Utils { // We re-declare ERC-1967 events here because they can't be used directly from IERC1967. // This will be fixed in Solidity 0.8.21. At that point we should remove these events. /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev The `implementation` of the proxy is invalid. */ error ERC1967InvalidImplementation(address implementation); /** * @dev The `admin` of the proxy is invalid. */ error ERC1967InvalidAdmin(address admin); /** * @dev The `beacon` of the proxy is invalid. */ error ERC1967InvalidBeacon(address beacon); /** * @dev An upgrade function sees `msg.value > 0` that may be lost. */ error ERC1967NonPayable(); /** * @dev Returns the current implementation address. */ function getImplementation() internal view returns (address) { return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { if (newImplementation.code.length == 0) { revert ERC1967InvalidImplementation(newImplementation); } StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Performs implementation upgrade with additional setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-Upgraded} event. */ function upgradeToAndCall(address newImplementation, bytes memory data) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); if (data.length > 0) { Address.functionDelegateCall(newImplementation, data); } else { _checkNonPayable(); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103` */ function getAdmin() internal view returns (address) { return StorageSlot.getAddressSlot(ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { if (newAdmin == address(0)) { revert ERC1967InvalidAdmin(address(0)); } StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {IERC1967-AdminChanged} event. */ function changeAdmin(address newAdmin) internal { emit AdminChanged(getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function getBeacon() internal view returns (address) { return StorageSlot.getAddressSlot(BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { if (newBeacon.code.length == 0) { revert ERC1967InvalidBeacon(newBeacon); } StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon; address beaconImplementation = IBeacon(newBeacon).implementation(); if (beaconImplementation.code.length == 0) { revert ERC1967InvalidImplementation(beaconImplementation); } } /** * @dev Change the beacon and trigger a setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-BeaconUpgraded} event. * * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for * efficiency. */ function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0) { Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data); } else { _checkNonPayable(); } } /** * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract * if an upgrade doesn't perform an initialization call. */ function _checkNonPayable() private { if (msg.value > 0) { revert ERC1967NonPayable(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Proxy.sol) pragma solidity ^0.8.20; import {Proxy} from "../Proxy.sol"; import {ERC1967Utils} from "./ERC1967Utils.sol"; /** * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an * implementation address that can be changed. This address is stored in storage in the location specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the * implementation behind the proxy. */ contract ERC1967Proxy is Proxy { /** * @dev Initializes the upgradeable proxy with an initial implementation specified by `implementation`. * * If `_data` is nonempty, it's used as data in a delegate call to `implementation`. This will typically be an * encoded function call, and allows initializing the storage of the proxy like a Solidity constructor. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ constructor(address implementation, bytes memory _data) payable { ERC1967Utils.upgradeToAndCall(implementation, _data); } /** * @dev Returns the current implementation address. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc` */ function _implementation() internal view virtual override returns (address) { return ERC1967Utils.getImplementation(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.20; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. */ interface IERC1967 { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/ProxyAdmin.sol) // Modified by Spectra to use AccessManager instead of Ownable for access control pragma solidity 0.8.20; import {IAMTransparentUpgradeableProxy} from "./AMTransparentUpgradeableProxy.sol"; import "openzeppelin-contracts/access/manager/AccessManaged.sol"; /** * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}. */ contract AMProxyAdmin is AccessManaged { /** * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgrade(address)` * and `upgradeAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called, * while `upgradeAndCall` will invoke the `receive` function if the second argument is the empty byte string. * If the getter returns `"5.0.0"`, only `upgradeAndCall(address,bytes)` is present, and the second argument must * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function * during an upgrade. */ string public constant UPGRADE_INTERFACE_VERSION = "5.0.0"; /** * @dev Sets the initial authority (the access manager) who control upgrader roles. */ constructor(address initialAuthority) AccessManaged(initialAuthority) {} /** * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. * See {TransparentUpgradeableProxy-_dispatchUpgradeToAndCall}. * * Requirements: * * - This contract must be the admin of `proxy`. * - If `data` is empty, `msg.value` must be zero. * - msg.sender must have a role that allows them to upgrade the proxy. */ function upgradeAndCall( IAMTransparentUpgradeableProxy proxy, address implementation, bytes memory data ) public payable virtual restricted { proxy.upgradeToAndCall{value: msg.value}(implementation, data); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.20; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeacon { /** * @dev Must return an address that can be used as a delegate call target. * * {UpgradeableBeacon} will check that this address is a contract. */ function implementation() external view returns (address); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/Proxy.sol) pragma solidity ^0.8.20; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internal call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overridden so it returns the address to which the fallback * function and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internal call site, it will return directly to the external caller. */ function _fallback() internal virtual { _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback() external payable virtual { _fallback(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/manager/AccessManaged.sol) pragma solidity ^0.8.20; import {IAuthority} from "./IAuthority.sol"; import {AuthorityUtils} from "./AuthorityUtils.sol"; import {IAccessManager} from "./IAccessManager.sol"; import {IAccessManaged} from "./IAccessManaged.sol"; import {Context} from "../../utils/Context.sol"; /** * @dev This contract module makes available a {restricted} modifier. Functions decorated with this modifier will be * permissioned according to an "authority": a contract like {AccessManager} that follows the {IAuthority} interface, * implementing a policy that allows certain callers to access certain functions. * * IMPORTANT: The `restricted` modifier should never be used on `internal` functions, judiciously used in `public` * functions, and ideally only used in `external` functions. See {restricted}. */ abstract contract AccessManaged is Context, IAccessManaged { address private _authority; bool private _consumingSchedule; /** * @dev Initializes the contract connected to an initial authority. */ constructor(address initialAuthority) { _setAuthority(initialAuthority); } /** * @dev Restricts access to a function as defined by the connected Authority for this contract and the * caller and selector of the function that entered the contract. * * [IMPORTANT] * ==== * In general, this modifier should only be used on `external` functions. It is okay to use it on `public` * functions that are used as external entry points and are not called internally. Unless you know what you're * doing, it should never be used on `internal` functions. Failure to follow these rules can have critical security * implications! This is because the permissions are determined by the function that entered the contract, i.e. the * function at the bottom of the call stack, and not the function where the modifier is visible in the source code. * ==== * * [WARNING] * ==== * Avoid adding this modifier to the https://docs.soliditylang.org/en/v0.8.20/contracts.html#receive-ether-function[`receive()`] * function or the https://docs.soliditylang.org/en/v0.8.20/contracts.html#fallback-function[`fallback()`]. These * functions are the only execution paths where a function selector cannot be unambiguosly determined from the calldata * since the selector defaults to `0x00000000` in the `receive()` function and similarly in the `fallback()` function * if no calldata is provided. (See {_checkCanCall}). * * The `receive()` function will always panic whereas the `fallback()` may panic depending on the calldata length. * ==== */ modifier restricted() { _checkCanCall(_msgSender(), _msgData()); _; } /// @inheritdoc IAccessManaged function authority() public view virtual returns (address) { return _authority; } /// @inheritdoc IAccessManaged function setAuthority(address newAuthority) public virtual { address caller = _msgSender(); if (caller != authority()) { revert AccessManagedUnauthorized(caller); } if (newAuthority.code.length == 0) { revert AccessManagedInvalidAuthority(newAuthority); } _setAuthority(newAuthority); } /// @inheritdoc IAccessManaged function isConsumingScheduledOp() public view returns (bytes4) { return _consumingSchedule ? this.isConsumingScheduledOp.selector : bytes4(0); } /** * @dev Transfers control to a new authority. Internal function with no access restriction. Allows bypassing the * permissions set by the current authority. */ function _setAuthority(address newAuthority) internal virtual { _authority = newAuthority; emit AuthorityUpdated(newAuthority); } /** * @dev Reverts if the caller is not allowed to call the function identified by a selector. Panics if the calldata * is less than 4 bytes long. */ function _checkCanCall(address caller, bytes calldata data) internal virtual { (bool immediate, uint32 delay) = AuthorityUtils.canCallWithDelay( authority(), caller, address(this), bytes4(data[0:4]) ); if (!immediate) { if (delay > 0) { _consumingSchedule = true; IAccessManager(authority()).consumeScheduledOp(caller, data); _consumingSchedule = false; } else { revert AccessManagedUnauthorized(caller); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAuthority.sol) pragma solidity ^0.8.20; /** * @dev Standard interface for permissioning originally defined in Dappsys. */ interface IAuthority { /** * @dev Returns true if the caller can invoke on a target the function identified by a function selector. */ function canCall(address caller, address target, bytes4 selector) external view returns (bool allowed); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/manager/AuthorityUtils.sol) pragma solidity ^0.8.20; import {IAuthority} from "./IAuthority.sol"; library AuthorityUtils { /** * @dev Since `AccessManager` implements an extended IAuthority interface, invoking `canCall` with backwards compatibility * for the preexisting `IAuthority` interface requires special care to avoid reverting on insufficient return data. * This helper function takes care of invoking `canCall` in a backwards compatible way without reverting. */ function canCallWithDelay( address authority, address caller, address target, bytes4 selector ) internal view returns (bool immediate, uint32 delay) { (bool success, bytes memory data) = authority.staticcall( abi.encodeCall(IAuthority.canCall, (caller, target, selector)) ); if (success) { if (data.length >= 0x40) { (immediate, delay) = abi.decode(data, (bool, uint32)); } else if (data.length >= 0x20) { immediate = abi.decode(data, (bool)); } } return (immediate, delay); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAccessManager.sol) pragma solidity ^0.8.20; import {IAccessManaged} from "./IAccessManaged.sol"; import {Time} from "../../utils/types/Time.sol"; interface IAccessManager { /** * @dev A delayed operation was scheduled. */ event OperationScheduled( bytes32 indexed operationId, uint32 indexed nonce, uint48 schedule, address caller, address target, bytes data ); /** * @dev A scheduled operation was executed. */ event OperationExecuted(bytes32 indexed operationId, uint32 indexed nonce); /** * @dev A scheduled operation was canceled. */ event OperationCanceled(bytes32 indexed operationId, uint32 indexed nonce); /** * @dev Informational labelling for a roleId. */ event RoleLabel(uint64 indexed roleId, string label); /** * @dev Emitted when `account` is granted `roleId`. * * NOTE: The meaning of the `since` argument depends on the `newMember` argument. * If the role is granted to a new member, the `since` argument indicates when the account becomes a member of the role, * otherwise it indicates the execution delay for this account and roleId is updated. */ event RoleGranted(uint64 indexed roleId, address indexed account, uint32 delay, uint48 since, bool newMember); /** * @dev Emitted when `account` membership or `roleId` is revoked. Unlike granting, revoking is instantaneous. */ event RoleRevoked(uint64 indexed roleId, address indexed account); /** * @dev Role acting as admin over a given `roleId` is updated. */ event RoleAdminChanged(uint64 indexed roleId, uint64 indexed admin); /** * @dev Role acting as guardian over a given `roleId` is updated. */ event RoleGuardianChanged(uint64 indexed roleId, uint64 indexed guardian); /** * @dev Grant delay for a given `roleId` will be updated to `delay` when `since` is reached. */ event RoleGrantDelayChanged(uint64 indexed roleId, uint32 delay, uint48 since); /** * @dev Target mode is updated (true = closed, false = open). */ event TargetClosed(address indexed target, bool closed); /** * @dev Role required to invoke `selector` on `target` is updated to `roleId`. */ event TargetFunctionRoleUpdated(address indexed target, bytes4 selector, uint64 indexed roleId); /** * @dev Admin delay for a given `target` will be updated to `delay` when `since` is reached. */ event TargetAdminDelayUpdated(address indexed target, uint32 delay, uint48 since); error AccessManagerAlreadyScheduled(bytes32 operationId); error AccessManagerNotScheduled(bytes32 operationId); error AccessManagerNotReady(bytes32 operationId); error AccessManagerExpired(bytes32 operationId); error AccessManagerLockedAccount(address account); error AccessManagerLockedRole(uint64 roleId); error AccessManagerBadConfirmation(); error AccessManagerUnauthorizedAccount(address msgsender, uint64 roleId); error AccessManagerUnauthorizedCall(address caller, address target, bytes4 selector); error AccessManagerUnauthorizedConsume(address target); error AccessManagerUnauthorizedCancel(address msgsender, address caller, address target, bytes4 selector); error AccessManagerInvalidInitialAdmin(address initialAdmin); /** * @dev Check if an address (`caller`) is authorised to call a given function on a given contract directly (with * no restriction). Additionally, it returns the delay needed to perform the call indirectly through the {schedule} * & {execute} workflow. * * This function is usually called by the targeted contract to control immediate execution of restricted functions. * Therefore we only return true if the call can be performed without any delay. If the call is subject to a * previously set delay (not zero), then the function should return false and the caller should schedule the operation * for future execution. * * If `immediate` is true, the delay can be disregarded and the operation can be immediately executed, otherwise * the operation can be executed if and only if delay is greater than 0. * * NOTE: The IAuthority interface does not include the `uint32` delay. This is an extension of that interface that * is backward compatible. Some contracts may thus ignore the second return argument. In that case they will fail * to identify the indirect workflow, and will consider calls that require a delay to be forbidden. * * NOTE: This function does not report the permissions of this manager itself. These are defined by the * {_canCallSelf} function instead. */ function canCall( address caller, address target, bytes4 selector ) external view returns (bool allowed, uint32 delay); /** * @dev Expiration delay for scheduled proposals. Defaults to 1 week. * * IMPORTANT: Avoid overriding the expiration with 0. Otherwise every contract proposal will be expired immediately, * disabling any scheduling usage. */ function expiration() external view returns (uint32); /** * @dev Minimum setback for all delay updates, with the exception of execution delays. It * can be increased without setback (and reset via {revokeRole} in the case event of an * accidental increase). Defaults to 5 days. */ function minSetback() external view returns (uint32); /** * @dev Get whether the contract is closed disabling any access. Otherwise role permissions are applied. */ function isTargetClosed(address target) external view returns (bool); /** * @dev Get the role required to call a function. */ function getTargetFunctionRole(address target, bytes4 selector) external view returns (uint64); /** * @dev Get the admin delay for a target contract. Changes to contract configuration are subject to this delay. */ function getTargetAdminDelay(address target) external view returns (uint32); /** * @dev Get the id of the role that acts as an admin for the given role. * * The admin permission is required to grant the role, revoke the role and update the execution delay to execute * an operation that is restricted to this role. */ function getRoleAdmin(uint64 roleId) external view returns (uint64); /** * @dev Get the role that acts as a guardian for a given role. * * The guardian permission allows canceling operations that have been scheduled under the role. */ function getRoleGuardian(uint64 roleId) external view returns (uint64); /** * @dev Get the role current grant delay. * * Its value may change at any point without an event emitted following a call to {setGrantDelay}. * Changes to this value, including effect timepoint are notified in advance by the {RoleGrantDelayChanged} event. */ function getRoleGrantDelay(uint64 roleId) external view returns (uint32); /** * @dev Get the access details for a given account for a given role. These details include the timepoint at which * membership becomes active, and the delay applied to all operation by this user that requires this permission * level. * * Returns: * [0] Timestamp at which the account membership becomes valid. 0 means role is not granted. * [1] Current execution delay for the account. * [2] Pending execution delay for the account. * [3] Timestamp at which the pending execution delay will become active. 0 means no delay update is scheduled. */ function getAccess(uint64 roleId, address account) external view returns (uint48, uint32, uint32, uint48); /** * @dev Check if a given account currently has the permission level corresponding to a given role. Note that this * permission might be associated with an execution delay. {getAccess} can provide more details. */ function hasRole(uint64 roleId, address account) external view returns (bool, uint32); /** * @dev Give a label to a role, for improved role discoverability by UIs. * * Requirements: * * - the caller must be a global admin * * Emits a {RoleLabel} event. */ function labelRole(uint64 roleId, string calldata label) external; /** * @dev Add `account` to `roleId`, or change its execution delay. * * This gives the account the authorization to call any function that is restricted to this role. An optional * execution delay (in seconds) can be set. If that delay is non 0, the user is required to schedule any operation * that is restricted to members of this role. The user will only be able to execute the operation after the delay has * passed, before it has expired. During this period, admin and guardians can cancel the operation (see {cancel}). * * If the account has already been granted this role, the execution delay will be updated. This update is not * immediate and follows the delay rules. For example, if a user currently has a delay of 3 hours, and this is * called to reduce that delay to 1 hour, the new delay will take some time to take effect, enforcing that any * operation executed in the 3 hours that follows this update was indeed scheduled before this update. * * Requirements: * * - the caller must be an admin for the role (see {getRoleAdmin}) * - granted role must not be the `PUBLIC_ROLE` * * Emits a {RoleGranted} event. */ function grantRole(uint64 roleId, address account, uint32 executionDelay) external; /** * @dev Remove an account from a role, with immediate effect. If the account does not have the role, this call has * no effect. * * Requirements: * * - the caller must be an admin for the role (see {getRoleAdmin}) * - revoked role must not be the `PUBLIC_ROLE` * * Emits a {RoleRevoked} event if the account had the role. */ function revokeRole(uint64 roleId, address account) external; /** * @dev Renounce role permissions for the calling account with immediate effect. If the sender is not in * the role this call has no effect. * * Requirements: * * - the caller must be `callerConfirmation`. * * Emits a {RoleRevoked} event if the account had the role. */ function renounceRole(uint64 roleId, address callerConfirmation) external; /** * @dev Change admin role for a given role. * * Requirements: * * - the caller must be a global admin * * Emits a {RoleAdminChanged} event */ function setRoleAdmin(uint64 roleId, uint64 admin) external; /** * @dev Change guardian role for a given role. * * Requirements: * * - the caller must be a global admin * * Emits a {RoleGuardianChanged} event */ function setRoleGuardian(uint64 roleId, uint64 guardian) external; /** * @dev Update the delay for granting a `roleId`. * * Requirements: * * - the caller must be a global admin * * Emits a {RoleGrantDelayChanged} event. */ function setGrantDelay(uint64 roleId, uint32 newDelay) external; /** * @dev Set the role required to call functions identified by the `selectors` in the `target` contract. * * Requirements: * * - the caller must be a global admin * * Emits a {TargetFunctionRoleUpdated} event per selector. */ function setTargetFunctionRole(address target, bytes4[] calldata selectors, uint64 roleId) external; /** * @dev Set the delay for changing the configuration of a given target contract. * * Requirements: * * - the caller must be a global admin * * Emits a {TargetAdminDelayUpdated} event. */ function setTargetAdminDelay(address target, uint32 newDelay) external; /** * @dev Set the closed flag for a contract. * * Requirements: * * - the caller must be a global admin * * Emits a {TargetClosed} event. */ function setTargetClosed(address target, bool closed) external; /** * @dev Return the timepoint at which a scheduled operation will be ready for execution. This returns 0 if the * operation is not yet scheduled, has expired, was executed, or was canceled. */ function getSchedule(bytes32 id) external view returns (uint48); /** * @dev Return the nonce for the latest scheduled operation with a given id. Returns 0 if the operation has never * been scheduled. */ function getNonce(bytes32 id) external view returns (uint32); /** * @dev Schedule a delayed operation for future execution, and return the operation identifier. It is possible to * choose the timestamp at which the operation becomes executable as long as it satisfies the execution delays * required for the caller. The special value zero will automatically set the earliest possible time. * * Returns the `operationId` that was scheduled. Since this value is a hash of the parameters, it can reoccur when * the same parameters are used; if this is relevant, the returned `nonce` can be used to uniquely identify this * scheduled operation from other occurrences of the same `operationId` in invocations of {execute} and {cancel}. * * Emits a {OperationScheduled} event. * * NOTE: It is not possible to concurrently schedule more than one operation with the same `target` and `data`. If * this is necessary, a random byte can be appended to `data` to act as a salt that will be ignored by the target * contract if it is using standard Solidity ABI encoding. */ function schedule(address target, bytes calldata data, uint48 when) external returns (bytes32, uint32); /** * @dev Execute a function that is delay restricted, provided it was properly scheduled beforehand, or the * execution delay is 0. * * Returns the nonce that identifies the previously scheduled operation that is executed, or 0 if the * operation wasn't previously scheduled (if the caller doesn't have an execution delay). * * Emits an {OperationExecuted} event only if the call was scheduled and delayed. */ function execute(address target, bytes calldata data) external payable returns (uint32); /** * @dev Cancel a scheduled (delayed) operation. Returns the nonce that identifies the previously scheduled * operation that is cancelled. * * Requirements: * * - the caller must be the proposer, a guardian of the targeted function, or a global admin * * Emits a {OperationCanceled} event. */ function cancel(address caller, address target, bytes calldata data) external returns (uint32); /** * @dev Consume a scheduled operation targeting the caller. If such an operation exists, mark it as consumed * (emit an {OperationExecuted} event and clean the state). Otherwise, throw an error. * * This is useful for contract that want to enforce that calls targeting them were scheduled on the manager, * with all the verifications that it implies. * * Emit a {OperationExecuted} event. */ function consumeScheduledOp(address caller, bytes calldata data) external; /** * @dev Hashing function for delayed operations. */ function hashOperation(address caller, address target, bytes calldata data) external view returns (bytes32); /** * @dev Changes the authority of a target managed by this manager instance. * * Requirements: * * - the caller must be a global admin */ function updateAuthority(address target, address newAuthority) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAccessManaged.sol) pragma solidity ^0.8.20; interface IAccessManaged { /** * @dev Authority that manages this contract was updated. */ event AuthorityUpdated(address authority); error AccessManagedUnauthorized(address caller); error AccessManagedRequiredDelay(address caller, uint32 delay); error AccessManagedInvalidAuthority(address authority); /** * @dev Returns the current authority. */ function authority() external view returns (address); /** * @dev Transfers control to a new authority. The caller must be the current authority. */ function setAuthority(address) external; /** * @dev Returns true only in the context of a delayed restricted call, at the moment that the scheduled operation is * being consumed. Prevents denial of service for delayed restricted calls in the case that the contract performs * attacker controlled calls. */ function isConsumingScheduledOp() external view returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/types/Time.sol) pragma solidity ^0.8.20; import {Math} from "../math/Math.sol"; import {SafeCast} from "../math/SafeCast.sol"; /** * @dev This library provides helpers for manipulating time-related objects. * * It uses the following types: * - `uint48` for timepoints * - `uint32` for durations * * While the library doesn't provide specific types for timepoints and duration, it does provide: * - a `Delay` type to represent duration that can be programmed to change value automatically at a given point * - additional helper functions */ library Time { using Time for *; /** * @dev Get the block timestamp as a Timepoint. */ function timestamp() internal view returns (uint48) { return SafeCast.toUint48(block.timestamp); } /** * @dev Get the block number as a Timepoint. */ function blockNumber() internal view returns (uint48) { return SafeCast.toUint48(block.number); } // ==================================================== Delay ===================================================== /** * @dev A `Delay` is a uint32 duration that can be programmed to change value automatically at a given point in the * future. The "effect" timepoint describes when the transitions happens from the "old" value to the "new" value. * This allows updating the delay applied to some operation while keeping some guarantees. * * In particular, the {update} function guarantees that if the delay is reduced, the old delay still applies for * some time. For example if the delay is currently 7 days to do an upgrade, the admin should not be able to set * the delay to 0 and upgrade immediately. If the admin wants to reduce the delay, the old delay (7 days) should * still apply for some time. * * * The `Delay` type is 112 bits long, and packs the following: * * ``` * | [uint48]: effect date (timepoint) * | | [uint32]: value before (duration) * ↓ ↓ ↓ [uint32]: value after (duration) * 0xAAAAAAAAAAAABBBBBBBBCCCCCCCC * ``` * * NOTE: The {get} and {withUpdate} functions operate using timestamps. Block number based delays are not currently * supported. */ type Delay is uint112; /** * @dev Wrap a duration into a Delay to add the one-step "update in the future" feature */ function toDelay(uint32 duration) internal pure returns (Delay) { return Delay.wrap(duration); } /** * @dev Get the value at a given timepoint plus the pending value and effect timepoint if there is a scheduled * change after this timepoint. If the effect timepoint is 0, then the pending value should not be considered. */ function _getFullAt(Delay self, uint48 timepoint) private pure returns (uint32, uint32, uint48) { (uint32 valueBefore, uint32 valueAfter, uint48 effect) = self.unpack(); return effect <= timepoint ? (valueAfter, 0, 0) : (valueBefore, valueAfter, effect); } /** * @dev Get the current value plus the pending value and effect timepoint if there is a scheduled change. If the * effect timepoint is 0, then the pending value should not be considered. */ function getFull(Delay self) internal view returns (uint32, uint32, uint48) { return _getFullAt(self, timestamp()); } /** * @dev Get the current value. */ function get(Delay self) internal view returns (uint32) { (uint32 delay, , ) = self.getFull(); return delay; } /** * @dev Update a Delay object so that it takes a new duration after a timepoint that is automatically computed to * enforce the old delay at the moment of the update. Returns the updated Delay object and the timestamp when the * new delay becomes effective. */ function withUpdate( Delay self, uint32 newValue, uint32 minSetback ) internal view returns (Delay updatedDelay, uint48 effect) { uint32 value = self.get(); uint32 setback = uint32(Math.max(minSetback, value > newValue ? value - newValue : 0)); effect = timestamp() + setback; return (pack(value, newValue, effect), effect); } /** * @dev Split a delay into its components: valueBefore, valueAfter and effect (transition timepoint). */ function unpack(Delay self) internal pure returns (uint32 valueBefore, uint32 valueAfter, uint48 effect) { uint112 raw = Delay.unwrap(self); valueAfter = uint32(raw); valueBefore = uint32(raw >> 32); effect = uint48(raw >> 64); return (valueBefore, valueAfter, effect); } /** * @dev pack the components into a Delay object. */ function pack(uint32 valueBefore, uint32 valueAfter, uint48 effect) internal pure returns (Delay) { return Delay.wrap((uint112(effect) << 64) | (uint112(valueBefore) << 32) | uint112(valueAfter)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol) pragma solidity ^0.8.20; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Muldiv operation overflow. */ error MathOverflowedMulDiv(); enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an overflow flag. */ 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 subtraction of two unsigned integers, with an overflow flag. */ 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. */ 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. */ 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. */ 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 largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. return a / b; } // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by * Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. if (denominator <= prod1) { revert MathOverflowedMulDiv(); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also // works in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @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. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } return uint232(value); } /** * @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) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } return uint136(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) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } return uint104(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) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } return uint72(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) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } return uint40(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) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } return uint24(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) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } 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) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } 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) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, value); } } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, value); } } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, value); } } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, value); } } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, value); } } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, value); } } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, value); } } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, value); } } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, value); } } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, value); } } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, value); } } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, value); } } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, value); } } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, value); } } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, 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 */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, value); } } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, value); } } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, value); } } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, value); } } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, value); } } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, value); } } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, value); } } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, 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 */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, value); } } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, value); } } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, value); } } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, 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 */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, value); } } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, 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 */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, 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 */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, 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 if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } }
{ "remappings": [ "ds-test/=lib/forge-std/lib/ds-test/src/", "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/", "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/", "openzeppelin-erc20-basic/=lib/openzeppelin-contracts/contracts/token/ERC20/", "openzeppelin-erc20-extensions/=lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/", "openzeppelin-erc20/=lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/", "openzeppelin-math/=lib/openzeppelin-contracts-upgradeable/contracts/utils/math/", "openzeppelin-proxy/=lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/", "openzeppelin-utils/=lib/openzeppelin-contracts-upgradeable/contracts/utils/", "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/", "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "paris", "viaIR": false, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"initialAuthority","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"inputs":[{"internalType":"address","name":"initialAuthority","type":"address"}],"name":"AMInvalidInitialAuthority","type":"error"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"admin","type":"address"}],"name":"ERC1967InvalidAdmin","type":"error"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"}],"name":"ERC1967InvalidImplementation","type":"error"},{"inputs":[],"name":"ERC1967NonPayable","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"ProxyDeniedAdminAccess","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"}]
Contract Creation Code
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Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _logic (address): 0xa94ec39c91DF334DCAb55aDaA8EdD9C1dAF67cA7
Arg [1] : initialAuthority (address): 0x786Da12e9836a9ff9b7d92e8bac1C849e2ACe378
Arg [2] : _data (bytes): 0xc0c53b8b000000000000000000000000786da12e9836a9ff9b7d92e8bac1c849e2ace378000000000000000000000000eeee7bcf339c7f69ae2f211027be98f399ea36220000000000000000000000000000000000000000000000000000000000000000
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 000000000000000000000000a94ec39c91df334dcab55adaa8edd9c1daf67ca7
Arg [1] : 000000000000000000000000786da12e9836a9ff9b7d92e8bac1c849e2ace378
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000064
Arg [4] : c0c53b8b000000000000000000000000786da12e9836a9ff9b7d92e8bac1c849
Arg [5] : e2ace378000000000000000000000000eeee7bcf339c7f69ae2f211027be98f3
Arg [6] : 99ea362200000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000000
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
OP | 100.00% | $0.999524 | 37.2223 | $37.2 |
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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.