135 lines
143 KiB
JSON
135 lines
143 KiB
JSON
{
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"language": "Solidity",
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"sources": {
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"@openzeppelin/contracts/access/AccessControl.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControl.sol\";\nimport \"../utils/Context.sol\";\nimport \"../utils/Strings.sol\";\nimport \"../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Contract module that allows children to implement role-based access\n * control mechanisms. This is a lightweight version that doesn't allow enumerating role\n * members except through off-chain means by accessing the contract event logs. Some\n * applications may benefit from on-chain enumerability, for those cases see\n * {AccessControlEnumerable}.\n *\n * Roles are referred to by their `bytes32` identifier. These should be exposed\n * in the external API and be unique. The best way to achieve this is by\n * using `public constant` hash digests:\n *\n * ```solidity\n * bytes32 public constant MY_ROLE = keccak256(\"MY_ROLE\");\n * ```\n *\n * Roles can be used to represent a set of permissions. To restrict access to a\n * function call, use {hasRole}:\n *\n * ```solidity\n * function foo() public {\n * require(hasRole(MY_ROLE, msg.sender));\n * ...\n * }\n * ```\n *\n * Roles can be granted and revoked dynamically via the {grantRole} and\n * {revokeRole} functions. Each role has an associated admin role, and only\n * accounts that have a role's admin role can call {grantRole} and {revokeRole}.\n *\n * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means\n * that only accounts with this role will be able to grant or revoke other\n * roles. More complex role relationships can be created by using\n * {_setRoleAdmin}.\n *\n * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to\n * grant and revoke this role. Extra precautions should be taken to secure\n * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}\n * to enforce additional security measures for this role.\n */\nabstract contract AccessControl is Context, IAccessControl, ERC165 {\n struct RoleData {\n mapping(address => bool) members;\n bytes32 adminRole;\n }\n\n mapping(bytes32 => RoleData) private _roles;\n\n bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n /**\n * @dev Modifier that checks that an account has a specific role. Reverts\n * with a standardized message including the required role.\n *\n * The format of the revert reason is given by the following regular expression:\n *\n * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n *\n * _Available since v4.1._\n */\n modifier onlyRole(bytes32 role) {\n _checkRole(role);\n _;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev Returns `true` if `account` has been granted `role`.\n */\n function hasRole(bytes32 role, address account) public view virtual override returns (bool) {\n return _roles[role].members[account];\n }\n\n /**\n * @dev Revert with a standard message if `_msgSender()` is missing `role`.\n * Overriding this function changes the behavior of the {onlyRole} modifier.\n *\n * Format of the revert message is described in {_checkRole}.\n *\n * _Available since v4.6._\n */\n function _checkRole(bytes32 role) internal view virtual {\n _checkRole(role, _msgSender());\n }\n\n /**\n * @dev Revert with a standard message if `account` is missing `role`.\n *\n * The format of the revert reason is given by the following regular expression:\n *\n * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n */\n function _checkRole(bytes32 role, address account) internal view virtual {\n if (!hasRole(role, account)) {\n revert(\n string(\n abi.encodePacked(\n \"AccessControl: account \",\n Strings.toHexString(account),\n \" is missing role \",\n Strings.toHexString(uint256(role), 32)\n )\n )\n );\n }\n }\n\n /**\n * @dev Returns the admin role that controls `role`. See {grantRole} and\n * {revokeRole}.\n *\n * To change a role's admin, use {_setRoleAdmin}.\n */\n function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {\n return _roles[role].adminRole;\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n *\n * May emit a {RoleGranted} event.\n */\n function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n _grantRole(role, account);\n }\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * If `account` had been granted `role`, emits a {RoleRevoked} event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n *\n * May emit a {RoleRevoked} event.\n */\n function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n _revokeRole(role, account);\n }\n\n /**\n * @dev Revokes `role` from the calling account.\n *\n * Roles are often managed via {grantRole} and {revokeRole}: this function's\n * purpose is to provide a mechanism for accounts to lose their privileges\n * if they are compromised (such as when a trusted device is misplaced).\n *\n * If the calling account had been revoked `role`, emits a {RoleRevoked}\n * event.\n *\n * Requirements:\n *\n * - the caller must be `account`.\n *\n * May emit a {RoleRevoked} event.\n */\n function renounceRole(bytes32 role, address account) public virtual override {\n require(account == _msgSender(), \"AccessControl: can only renounce roles for self\");\n\n _revokeRole(role, account);\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event. Note that unlike {grantRole}, this function doesn't perform any\n * checks on the calling account.\n *\n * May emit a {RoleGranted} event.\n *\n * [WARNING]\n * ====\n * This function should only be called from the constructor when setting\n * up the initial roles for the system.\n *\n * Using this function in any other way is effectively circumventing the admin\n * system imposed by {AccessControl}.\n * ====\n *\n * NOTE: This function is deprecated in favor of {_grantRole}.\n */\n function _setupRole(bytes32 role, address account) internal virtual {\n _grantRole(role, account);\n }\n\n /**\n * @dev Sets `adminRole` as ``role``'s admin role.\n *\n * Emits a {RoleAdminChanged} event.\n */\n function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n bytes32 previousAdminRole = getRoleAdmin(role);\n _roles[role].adminRole = adminRole;\n emit RoleAdminChanged(role, previousAdminRole, adminRole);\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * Internal function without access restriction.\n *\n * May emit a {RoleGranted} event.\n */\n function _grantRole(bytes32 role, address account) internal virtual {\n if (!hasRole(role, account)) {\n _roles[role].members[account] = true;\n emit RoleGranted(role, account, _msgSender());\n }\n }\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * Internal function without access restriction.\n *\n * May emit a {RoleRevoked} event.\n */\n function _revokeRole(bytes32 role, address account) internal virtual {\n if (hasRole(role, account)) {\n _roles[role].members[account] = false;\n emit RoleRevoked(role, account, _msgSender());\n }\n }\n}\n"
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"@openzeppelin/contracts/access/IAccessControl.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControl {\n /**\n * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n *\n * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n * {RoleAdminChanged} not being emitted signaling this.\n *\n * _Available since v3.1._\n */\n event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n /**\n * @dev Emitted when `account` is granted `role`.\n *\n * `sender` is the account that originated the contract call, an admin role\n * bearer except when using {AccessControl-_setupRole}.\n */\n event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Emitted when `account` is revoked `role`.\n *\n * `sender` is the account that originated the contract call:\n * - if using `revokeRole`, it is the admin role bearer\n * - if using `renounceRole`, it is the role bearer (i.e. `account`)\n */\n event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Returns `true` if `account` has been granted `role`.\n */\n function hasRole(bytes32 role, address account) external view returns (bool);\n\n /**\n * @dev Returns the admin role that controls `role`. See {grantRole} and\n * {revokeRole}.\n *\n * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n */\n function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function grantRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * If `account` had been granted `role`, emits a {RoleRevoked} event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function revokeRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from the calling account.\n *\n * Roles are often managed via {grantRole} and {revokeRole}: this function's\n * purpose is to provide a mechanism for accounts to lose their privileges\n * if they are compromised (such as when a trusted device is misplaced).\n *\n * If the calling account had been granted `role`, emits a {RoleRevoked}\n * event.\n *\n * Requirements:\n *\n * - the caller must be `account`.\n */\n function renounceRole(bytes32 role, address account) external;\n}\n"
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"@openzeppelin/contracts/access/Ownable.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n _checkOwner();\n _;\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if the sender is not the owner.\n */\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby disabling any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n"
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"@openzeppelin/contracts/governance/TimelockController.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (governance/TimelockController.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../access/AccessControl.sol\";\nimport \"../token/ERC721/IERC721Receiver.sol\";\nimport \"../token/ERC1155/IERC1155Receiver.sol\";\n\n/**\n * @dev Contract module which acts as a timelocked controller. When set as the\n * owner of an `Ownable` smart contract, it enforces a timelock on all\n * `onlyOwner` maintenance operations. This gives time for users of the\n * controlled contract to exit before a potentially dangerous maintenance\n * operation is applied.\n *\n * By default, this contract is self administered, meaning administration tasks\n * have to go through the timelock process. The proposer (resp executor) role\n * is in charge of proposing (resp executing) operations. A common use case is\n * to position this {TimelockController} as the owner of a smart contract, with\n * a multisig or a DAO as the sole proposer.\n *\n * _Available since v3.3._\n */\ncontract TimelockController is AccessControl, IERC721Receiver, IERC1155Receiver {\n bytes32 public constant TIMELOCK_ADMIN_ROLE = keccak256(\"TIMELOCK_ADMIN_ROLE\");\n bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n bytes32 public constant CANCELLER_ROLE = keccak256(\"CANCELLER_ROLE\");\n uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n mapping(bytes32 => uint256) private _timestamps;\n uint256 private _minDelay;\n\n /**\n * @dev Emitted when a call is scheduled as part of operation `id`.\n */\n event CallScheduled(\n bytes32 indexed id,\n uint256 indexed index,\n address target,\n uint256 value,\n bytes data,\n bytes32 predecessor,\n uint256 delay\n );\n\n /**\n * @dev Emitted when a call is performed as part of operation `id`.\n */\n event CallExecuted(bytes32 indexed id, uint256 indexed index, address target, uint256 value, bytes data);\n\n /**\n * @dev Emitted when new proposal is scheduled with non-zero salt.\n */\n event CallSalt(bytes32 indexed id, bytes32 salt);\n\n /**\n * @dev Emitted when operation `id` is cancelled.\n */\n event Cancelled(bytes32 indexed id);\n\n /**\n * @dev Emitted when the minimum delay for future operations is modified.\n */\n event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n\n /**\n * @dev Initializes the contract with the following parameters:\n *\n * - `minDelay`: initial minimum delay for operations\n * - `proposers`: accounts to be granted proposer and canceller roles\n * - `executors`: accounts to be granted executor role\n * - `admin`: optional account to be granted admin role; disable with zero address\n *\n * IMPORTANT: The optional admin can aid with initial configuration of roles after deployment\n * without being subject to delay, but this role should be subsequently renounced in favor of\n * administration through timelocked proposals. Previous versions of this contract would assign\n * this admin to the deployer automatically and should be renounced as well.\n */\n constructor(uint256 minDelay, address[] memory proposers, address[] memory executors, address admin) {\n _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n _setRoleAdmin(CANCELLER_ROLE, TIMELOCK_ADMIN_ROLE);\n\n // self administration\n _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n // optional admin\n if (admin != address(0)) {\n _setupRole(TIMELOCK_ADMIN_ROLE, admin);\n }\n\n // register proposers and cancellers\n for (uint256 i = 0; i < proposers.length; ++i) {\n _setupRole(PROPOSER_ROLE, proposers[i]);\n _setupRole(CANCELLER_ROLE, proposers[i]);\n }\n\n // register executors\n for (uint256 i = 0; i < executors.length; ++i) {\n _setupRole(EXECUTOR_ROLE, executors[i]);\n }\n\n _minDelay = minDelay;\n emit MinDelayChange(0, minDelay);\n }\n\n /**\n * @dev Modifier to make a function callable only by a certain role. In\n * addition to checking the sender's role, `address(0)` 's role is also\n * considered. Granting a role to `address(0)` is equivalent to enabling\n * this role for everyone.\n */\n modifier onlyRoleOrOpenRole(bytes32 role) {\n if (!hasRole(role, address(0))) {\n _checkRole(role, _msgSender());\n }\n _;\n }\n\n /**\n * @dev Contract might receive/hold ETH as part of the maintenance process.\n */\n receive() external payable {}\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, AccessControl) returns (bool) {\n return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev Returns whether an id correspond to a registered operation. This\n * includes both Pending, Ready and Done operations.\n */\n function isOperation(bytes32 id) public view virtual returns (bool) {\n return getTimestamp(id) > 0;\n }\n\n /**\n * @dev Returns whether an operation is pending or not. Note that a \"pending\" operation may also be \"ready\".\n */\n function isOperationPending(bytes32 id) public view virtual returns (bool) {\n return getTimestamp(id) > _DONE_TIMESTAMP;\n }\n\n /**\n * @dev Returns whether an operation is ready for execution. Note that a \"ready\" operation is also \"pending\".\n */\n function isOperationReady(bytes32 id) public view virtual returns (bool) {\n uint256 timestamp = getTimestamp(id);\n return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n }\n\n /**\n * @dev Returns whether an operation is done or not.\n */\n function isOperationDone(bytes32 id) public view virtual returns (bool) {\n return getTimestamp(id) == _DONE_TIMESTAMP;\n }\n\n /**\n * @dev Returns the timestamp at which an operation becomes ready (0 for\n * unset operations, 1 for done operations).\n */\n function getTimestamp(bytes32 id) public view virtual returns (uint256) {\n return _timestamps[id];\n }\n\n /**\n * @dev Returns the minimum delay for an operation to become valid.\n *\n * This value can be changed by executing an operation that calls `updateDelay`.\n */\n function getMinDelay() public view virtual returns (uint256) {\n return _minDelay;\n }\n\n /**\n * @dev Returns the identifier of an operation containing a single\n * transaction.\n */\n function hashOperation(\n address target,\n uint256 value,\n bytes calldata data,\n bytes32 predecessor,\n bytes32 salt\n ) public pure virtual returns (bytes32) {\n return keccak256(abi.encode(target, value, data, predecessor, salt));\n }\n\n /**\n * @dev Returns the identifier of an operation containing a batch of\n * transactions.\n */\n function hashOperationBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt\n ) public pure virtual returns (bytes32) {\n return keccak256(abi.encode(targets, values, payloads, predecessor, salt));\n }\n\n /**\n * @dev Schedule an operation containing a single transaction.\n *\n * Emits {CallSalt} if salt is nonzero, and {CallScheduled}.\n *\n * Requirements:\n *\n * - the caller must have the 'proposer' role.\n */\n function schedule(\n address target,\n uint256 value,\n bytes calldata data,\n bytes32 predecessor,\n bytes32 salt,\n uint256 delay\n ) public virtual onlyRole(PROPOSER_ROLE) {\n bytes32 id = hashOperation(target, value, data, predecessor, salt);\n _schedule(id, delay);\n emit CallScheduled(id, 0, target, value, data, predecessor, delay);\n if (salt != bytes32(0)) {\n emit CallSalt(id, salt);\n }\n }\n\n /**\n * @dev Schedule an operation containing a batch of transactions.\n *\n * Emits {CallSalt} if salt is nonzero, and one {CallScheduled} event per transaction in the batch.\n *\n * Requirements:\n *\n * - the caller must have the 'proposer' role.\n */\n function scheduleBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt,\n uint256 delay\n ) public virtual onlyRole(PROPOSER_ROLE) {\n require(targets.length == values.length, \"TimelockController: length mismatch\");\n require(targets.length == payloads.length, \"TimelockController: length mismatch\");\n\n bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);\n _schedule(id, delay);\n for (uint256 i = 0; i < targets.length; ++i) {\n emit CallScheduled(id, i, targets[i], values[i], payloads[i], predecessor, delay);\n }\n if (salt != bytes32(0)) {\n emit CallSalt(id, salt);\n }\n }\n\n /**\n * @dev Schedule an operation that is to become valid after a given delay.\n */\n function _schedule(bytes32 id, uint256 delay) private {\n require(!isOperation(id), \"TimelockController: operation already scheduled\");\n require(delay >= getMinDelay(), \"TimelockController: insufficient delay\");\n _timestamps[id] = block.timestamp + delay;\n }\n\n /**\n * @dev Cancel an operation.\n *\n * Requirements:\n *\n * - the caller must have the 'canceller' role.\n */\n function cancel(bytes32 id) public virtual onlyRole(CANCELLER_ROLE) {\n require(isOperationPending(id), \"TimelockController: operation cannot be cancelled\");\n delete _timestamps[id];\n\n emit Cancelled(id);\n }\n\n /**\n * @dev Execute an (ready) operation containing a single transaction.\n *\n * Emits a {CallExecuted} event.\n *\n * Requirements:\n *\n * - the caller must have the 'executor' role.\n */\n // This function can reenter, but it doesn't pose a risk because _afterCall checks that the proposal is pending,\n // thus any modifications to the operation during reentrancy should be caught.\n // slither-disable-next-line reentrancy-eth\n function execute(\n address target,\n uint256 value,\n bytes calldata payload,\n bytes32 predecessor,\n bytes32 salt\n ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n bytes32 id = hashOperation(target, value, payload, predecessor, salt);\n\n _beforeCall(id, predecessor);\n _execute(target, value, payload);\n emit CallExecuted(id, 0, target, value, payload);\n _afterCall(id);\n }\n\n /**\n * @dev Execute an (ready) operation containing a batch of transactions.\n *\n * Emits one {CallExecuted} event per transaction in the batch.\n *\n * Requirements:\n *\n * - the caller must have the 'executor' role.\n */\n // This function can reenter, but it doesn't pose a risk because _afterCall checks that the proposal is pending,\n // thus any modifications to the operation during reentrancy should be caught.\n // slither-disable-next-line reentrancy-eth\n function executeBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt\n ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n require(targets.length == values.length, \"TimelockController: length mismatch\");\n require(targets.length == payloads.length, \"TimelockController: length mismatch\");\n\n bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);\n\n _beforeCall(id, predecessor);\n for (uint256 i = 0; i < targets.length; ++i) {\n address target = targets[i];\n uint256 value = values[i];\n bytes calldata payload = payloads[i];\n _execute(target, value, payload);\n emit CallExecuted(id, i, target, value, payload);\n }\n _afterCall(id);\n }\n\n /**\n * @dev Execute an operation's call.\n */\n function _execute(address target, uint256 value, bytes calldata data) internal virtual {\n (bool success, ) = target.call{value: value}(data);\n require(success, \"TimelockController: underlying transaction reverted\");\n }\n\n /**\n * @dev Checks before execution of an operation's calls.\n */\n function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n require(isOperationReady(id), \"TimelockController: operation is not ready\");\n require(predecessor == bytes32(0) || isOperationDone(predecessor), \"TimelockController: missing dependency\");\n }\n\n /**\n * @dev Checks after execution of an operation's calls.\n */\n function _afterCall(bytes32 id) private {\n require(isOperationReady(id), \"TimelockController: operation is not ready\");\n _timestamps[id] = _DONE_TIMESTAMP;\n }\n\n /**\n * @dev Changes the minimum timelock duration for future operations.\n *\n * Emits a {MinDelayChange} event.\n *\n * Requirements:\n *\n * - the caller must be the timelock itself. This can only be achieved by scheduling and later executing\n * an operation where the timelock is the target and the data is the ABI-encoded call to this function.\n */\n function updateDelay(uint256 newDelay) external virtual {\n require(msg.sender == address(this), \"TimelockController: caller must be timelock\");\n emit MinDelayChange(_minDelay, newDelay);\n _minDelay = newDelay;\n }\n\n /**\n * @dev See {IERC721Receiver-onERC721Received}.\n */\n function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) {\n return this.onERC721Received.selector;\n }\n\n /**\n * @dev See {IERC1155Receiver-onERC1155Received}.\n */\n function onERC1155Received(\n address,\n address,\n uint256,\n uint256,\n bytes memory\n ) public virtual override returns (bytes4) {\n return this.onERC1155Received.selector;\n }\n\n /**\n * @dev See {IERC1155Receiver-onERC1155BatchReceived}.\n */\n function onERC1155BatchReceived(\n address,\n address,\n uint256[] memory,\n uint256[] memory,\n bytes memory\n ) public virtual override returns (bytes4) {\n return this.onERC1155BatchReceived.selector;\n }\n}\n"
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"@openzeppelin/contracts/security/Pausable.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which allows children to implement an emergency stop\n * mechanism that can be triggered by an authorized account.\n *\n * This module is used through inheritance. It will make available the\n * modifiers `whenNotPaused` and `whenPaused`, which can be applied to\n * the functions of your contract. Note that they will not be pausable by\n * simply including this module, only once the modifiers are put in place.\n */\nabstract contract Pausable is Context {\n /**\n * @dev Emitted when the pause is triggered by `account`.\n */\n event Paused(address account);\n\n /**\n * @dev Emitted when the pause is lifted by `account`.\n */\n event Unpaused(address account);\n\n bool private _paused;\n\n /**\n * @dev Initializes the contract in unpaused state.\n */\n constructor() {\n _paused = false;\n }\n\n /**\n * @dev Modifier to make a function callable only when the contract is not paused.\n *\n * Requirements:\n *\n * - The contract must not be paused.\n */\n modifier whenNotPaused() {\n _requireNotPaused();\n _;\n }\n\n /**\n * @dev Modifier to make a function callable only when the contract is paused.\n *\n * Requirements:\n *\n * - The contract must be paused.\n */\n modifier whenPaused() {\n _requirePaused();\n _;\n }\n\n /**\n * @dev Returns true if the contract is paused, and false otherwise.\n */\n function paused() public view virtual returns (bool) {\n return _paused;\n }\n\n /**\n * @dev Throws if the contract is paused.\n */\n function _requireNotPaused() internal view virtual {\n require(!paused(), \"Pausable: paused\");\n }\n\n /**\n * @dev Throws if the contract is not paused.\n */\n function _requirePaused() internal view virtual {\n require(paused(), \"Pausable: not paused\");\n }\n\n /**\n * @dev Triggers stopped state.\n *\n * Requirements:\n *\n * - The contract must not be paused.\n */\n function _pause() internal virtual whenNotPaused {\n _paused = true;\n emit Paused(_msgSender());\n }\n\n /**\n * @dev Returns to normal state.\n *\n * Requirements:\n *\n * - The contract must be paused.\n */\n function _unpause() internal virtual whenPaused {\n _paused = false;\n emit Unpaused(_msgSender());\n }\n}\n"
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},
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"@openzeppelin/contracts/security/ReentrancyGuard.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n // Booleans are more expensive than uint256 or any type that takes up a full\n // word because each write operation emits an extra SLOAD to first read the\n // slot's contents, replace the bits taken up by the boolean, and then write\n // back. This is the compiler's defense against contract upgrades and\n // pointer aliasing, and it cannot be disabled.\n\n // The values being non-zero value makes deployment a bit more expensive,\n // but in exchange the refund on every call to nonReentrant will be lower in\n // amount. Since refunds are capped to a percentage of the total\n // transaction's gas, it is best to keep them low in cases like this one, to\n // increase the likelihood of the full refund coming into effect.\n uint256 private constant _NOT_ENTERED = 1;\n uint256 private constant _ENTERED = 2;\n\n uint256 private _status;\n\n constructor() {\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and making it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n _nonReentrantBefore();\n _;\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n // On the first call to nonReentrant, _status will be _NOT_ENTERED\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n // Any calls to nonReentrant after this point will fail\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n // By storing the original value once again, a refund is triggered (see\n // https://eips.ethereum.org/EIPS/eip-2200)\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Returns true if the reentrancy guard is currently set to \"entered\", which indicates there is a\n * `nonReentrant` function in the call stack.\n */\n function _reentrancyGuardEntered() internal view returns (bool) {\n return _status == _ENTERED;\n }\n}\n"
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},
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"@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\ninterface IERC1155Receiver is IERC165 {\n /**\n * @dev Handles the receipt of a single ERC1155 token type. This function is\n * called at the end of a `safeTransferFrom` after the balance has been updated.\n *\n * NOTE: To accept the transfer, this must return\n * `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))`\n * (i.e. 0xf23a6e61, or its own function selector).\n *\n * @param operator The address which initiated the transfer (i.e. msg.sender)\n * @param from The address which previously owned the token\n * @param id The ID of the token being transferred\n * @param value The amount of tokens being transferred\n * @param data Additional data with no specified format\n * @return `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))` if transfer is allowed\n */\n function onERC1155Received(\n address operator,\n address from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external returns (bytes4);\n\n /**\n * @dev Handles the receipt of a multiple ERC1155 token types. This function\n * is called at the end of a `safeBatchTransferFrom` after the balances have\n * been updated.\n *\n * NOTE: To accept the transfer(s), this must return\n * `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))`\n * (i.e. 0xbc197c81, or its own function selector).\n *\n * @param operator The address which initiated the batch transfer (i.e. msg.sender)\n * @param from The address which previously owned the token\n * @param ids An array containing ids of each token being transferred (order and length must match values array)\n * @param values An array containing amounts of each token being transferred (order and length must match ids array)\n * @param data Additional data with no specified format\n * @return `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))` if transfer is allowed\n */\n function onERC1155BatchReceived(\n address operator,\n address from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
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},
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"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * The default value of {decimals} is 18. To change this, you should override\n * this function so it returns a different value.\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the default value returned by this function, unless\n * it's overridden.\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(address from, address to, uint256 amount) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by\n // decrementing then incrementing.\n _balances[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n unchecked {\n // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.\n _balances[account] += amount;\n }\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n // Overflow not possible: amount <= accountBalance <= totalSupply.\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n}\n"
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},
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"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
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},
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"@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * ==== Security Considerations\n *\n * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature\n * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be\n * considered as an intention to spend the allowance in any specific way. The second is that because permits have\n * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should\n * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be\n * generally recommended is:\n *\n * ```solidity\n * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {\n * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}\n * doThing(..., value);\n * }\n *\n * function doThing(..., uint256 value) public {\n * token.safeTransferFrom(msg.sender, address(this), value);\n * ...\n * }\n * ```\n *\n * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of\n * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also\n * {SafeERC20-safeTransferFrom}).\n *\n * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so\n * contracts should have entry points that don't rely on permit.\n */\ninterface IERC20Permit {\n /**\n * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n * given ``owner``'s signed approval.\n *\n * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n * ordering also apply here.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `deadline` must be a timestamp in the future.\n * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n * over the EIP712-formatted function arguments.\n * - the signature must use ``owner``'s current nonce (see {nonces}).\n *\n * For more information on the signature format, see the\n * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n * section].\n *\n * CAUTION: See Security Considerations above.\n */\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n /**\n * @dev Returns the current nonce for `owner`. This value must be\n * included whenever a signature is generated for {permit}.\n *\n * Every successful call to {permit} increases ``owner``'s nonce by one. This\n * prevents a signature from being used multiple times.\n */\n function nonces(address owner) external view returns (uint256);\n\n /**\n * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n */\n // solhint-disable-next-line func-name-mixedcase\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
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},
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"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"
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},
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"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/IERC20Permit.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n /**\n * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n /**\n * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the\n * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.\n */\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n /**\n * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 oldAllowance = token.allowance(address(this), spender);\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));\n }\n\n /**\n * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));\n }\n }\n\n /**\n * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval\n * to be set to zero before setting it to a non-zero value, such as USDT.\n */\n function forceApprove(IERC20 token, address spender, uint256 value) internal {\n bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);\n\n if (!_callOptionalReturnBool(token, approvalCall)) {\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n _callOptionalReturn(token, approvalCall);\n }\n }\n\n /**\n * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.\n * Revert on invalid signature.\n */\n function safePermit(\n IERC20Permit token,\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal {\n uint256 nonceBefore = token.nonces(owner);\n token.permit(owner, spender, value, deadline, v, r, s);\n uint256 nonceAfter = token.nonces(owner);\n require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n require(returndata.length == 0 || abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n *\n * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.\n */\n function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false\n // and not revert is the subcall reverts.\n\n (bool success, bytes memory returndata) = address(token).call(data);\n return\n success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));\n }\n}\n"
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},
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"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
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},
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"@openzeppelin/contracts/utils/Address.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n *\n * Furthermore, `isContract` will also return true if the target contract within\n * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n * which only has an effect at the end of a transaction.\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n *\n * _Available since v4.8._\n */\n function verifyCallResultFromTarget(\n address target,\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n if (success) {\n if (returndata.length == 0) {\n // only check isContract if the call was successful and the return data is empty\n // otherwise we already know that it was a contract\n require(isContract(target), \"Address: call to non-contract\");\n }\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n /**\n * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason or using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function _revert(bytes memory returndata, string memory errorMessage) private pure {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n"
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"@openzeppelin/contracts/utils/Context.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n\n function _contextSuffixLength() internal view virtual returns (uint256) {\n return 0;\n }\n}\n"
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},
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"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
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"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
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"@openzeppelin/contracts/utils/math/Math.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n enum Rounding {\n Down, // Toward negative infinity\n Up, // Toward infinity\n Zero // Toward zero\n }\n\n /**\n * @dev Returns the largest of two numbers.\n */\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n }\n\n /**\n * @dev Returns the smallest of two numbers.\n */\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n /**\n * @dev Returns the average of two numbers. The result is rounded towards\n * zero.\n */\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b) / 2 can overflow.\n return (a & b) + (a ^ b) / 2;\n }\n\n /**\n * @dev Returns the ceiling of the division of two numbers.\n *\n * This differs from standard division with `/` in that it rounds up instead\n * of rounding down.\n */\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b - 1) / b can overflow on addition, so we distribute.\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n /**\n * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0\n * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)\n * with further edits by Uniswap Labs also under MIT license.\n */\n function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {\n unchecked {\n // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use\n // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n // variables such that product = prod1 * 2^256 + prod0.\n uint256 prod0; // Least significant 256 bits of the product\n uint256 prod1; // Most significant 256 bits of the product\n assembly {\n let mm := mulmod(x, y, not(0))\n prod0 := mul(x, y)\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n }\n\n // Handle non-overflow cases, 256 by 256 division.\n if (prod1 == 0) {\n // Solidity will revert if denominator == 0, unlike the div opcode on its own.\n // The surrounding unchecked block does not change this fact.\n // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.\n return prod0 / denominator;\n }\n\n // Make sure the result is less than 2^256. Also prevents denominator == 0.\n require(denominator > prod1, \"Math: mulDiv overflow\");\n\n ///////////////////////////////////////////////\n // 512 by 256 division.\n ///////////////////////////////////////////////\n\n // Make division exact by subtracting the remainder from [prod1 prod0].\n uint256 remainder;\n assembly {\n // Compute remainder using mulmod.\n remainder := mulmod(x, y, denominator)\n\n // Subtract 256 bit number from 512 bit number.\n prod1 := sub(prod1, gt(remainder, prod0))\n prod0 := sub(prod0, remainder)\n }\n\n // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.\n // See https://cs.stackexchange.com/q/138556/92363.\n\n // Does not overflow because the denominator cannot be zero at this stage in the function.\n uint256 twos = denominator & (~denominator + 1);\n assembly {\n // Divide denominator by twos.\n denominator := div(denominator, twos)\n\n // Divide [prod1 prod0] by twos.\n prod0 := div(prod0, twos)\n\n // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n twos := add(div(sub(0, twos), twos), 1)\n }\n\n // Shift in bits from prod1 into prod0.\n prod0 |= prod1 * twos;\n\n // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for\n // four bits. That is, denominator * inv = 1 mod 2^4.\n uint256 inverse = (3 * denominator) ^ 2;\n\n // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works\n // in modular arithmetic, doubling the correct bits in each step.\n inverse *= 2 - denominator * inverse; // inverse mod 2^8\n inverse *= 2 - denominator * inverse; // inverse mod 2^16\n inverse *= 2 - denominator * inverse; // inverse mod 2^32\n inverse *= 2 - denominator * inverse; // inverse mod 2^64\n inverse *= 2 - denominator * inverse; // inverse mod 2^128\n inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.\n // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is\n // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n // is no longer required.\n result = prod0 * inverse;\n return result;\n }\n }\n\n /**\n * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.\n */\n function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n result += 1;\n }\n return result;\n }\n\n /**\n * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n *\n * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n */\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n //\n // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n //\n // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`\n // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n //\n // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n uint256 result = 1 << (log2(a) >> 1);\n\n // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n // into the expected uint128 result.\n unchecked {\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n return min(result, a / result);\n }\n }\n\n /**\n * @notice Calculates sqrt(a), following the selected rounding direction.\n */\n function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = sqrt(a);\n return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 2, rounded down, of a positive value.\n * Returns 0 if given 0.\n */\n function log2(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 128;\n }\n if (value >> 64 > 0) {\n value >>= 64;\n result += 64;\n }\n if (value >> 32 > 0) {\n value >>= 32;\n result += 32;\n }\n if (value >> 16 > 0) {\n value >>= 16;\n result += 16;\n }\n if (value >> 8 > 0) {\n value >>= 8;\n result += 8;\n }\n if (value >> 4 > 0) {\n value >>= 4;\n result += 4;\n }\n if (value >> 2 > 0) {\n value >>= 2;\n result += 2;\n }\n if (value >> 1 > 0) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 2, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log2(value);\n return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 10, rounded down, of a positive value.\n * Returns 0 if given 0.\n */\n function log10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >= 10 ** 64) {\n value /= 10 ** 64;\n result += 64;\n }\n if (value >= 10 ** 32) {\n value /= 10 ** 32;\n result += 32;\n }\n if (value >= 10 ** 16) {\n value /= 10 ** 16;\n result += 16;\n }\n if (value >= 10 ** 8) {\n value /= 10 ** 8;\n result += 8;\n }\n if (value >= 10 ** 4) {\n value /= 10 ** 4;\n result += 4;\n }\n if (value >= 10 ** 2) {\n value /= 10 ** 2;\n result += 2;\n }\n if (value >= 10 ** 1) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log10(value);\n return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 256, rounded down, of a positive value.\n * Returns 0 if given 0.\n *\n * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n */\n function log256(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 16;\n }\n if (value >> 64 > 0) {\n value >>= 64;\n result += 8;\n }\n if (value >> 32 > 0) {\n value >>= 32;\n result += 4;\n }\n if (value >> 16 > 0) {\n value >>= 16;\n result += 2;\n }\n if (value >> 8 > 0) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 256, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n }\n }\n}\n"
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},
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"@openzeppelin/contracts/utils/math/SignedMath.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard signed math utilities missing in the Solidity language.\n */\nlibrary SignedMath {\n /**\n * @dev Returns the largest of two signed numbers.\n */\n function max(int256 a, int256 b) internal pure returns (int256) {\n return a > b ? a : b;\n }\n\n /**\n * @dev Returns the smallest of two signed numbers.\n */\n function min(int256 a, int256 b) internal pure returns (int256) {\n return a < b ? a : b;\n }\n\n /**\n * @dev Returns the average of two signed numbers without overflow.\n * The result is rounded towards zero.\n */\n function average(int256 a, int256 b) internal pure returns (int256) {\n // Formula from the book \"Hacker's Delight\"\n int256 x = (a & b) + ((a ^ b) >> 1);\n return x + (int256(uint256(x) >> 255) & (a ^ b));\n }\n\n /**\n * @dev Returns the absolute unsigned value of a signed value.\n */\n function abs(int256 n) internal pure returns (uint256) {\n unchecked {\n // must be unchecked in order to support `n = type(int256).min`\n return uint256(n >= 0 ? n : -n);\n }\n }\n}\n"
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},
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"@openzeppelin/contracts/utils/Strings.sol": {
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"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./math/Math.sol\";\nimport \"./math/SignedMath.sol\";\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n unchecked {\n uint256 length = Math.log10(value) + 1;\n string memory buffer = new string(length);\n uint256 ptr;\n /// @solidity memory-safe-assembly\n assembly {\n ptr := add(buffer, add(32, length))\n }\n while (true) {\n ptr--;\n /// @solidity memory-safe-assembly\n assembly {\n mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n }\n value /= 10;\n if (value == 0) break;\n }\n return buffer;\n }\n }\n\n /**\n * @dev Converts a `int256` to its ASCII `string` decimal representation.\n */\n function toString(int256 value) internal pure returns (string memory) {\n return string(abi.encodePacked(value < 0 ? \"-\" : \"\", toString(SignedMath.abs(value))));\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, Math.log256(value) + 1);\n }\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n\n /**\n * @dev Returns true if the two strings are equal.\n */\n function equal(string memory a, string memory b) internal pure returns (bool) {\n return keccak256(bytes(a)) == keccak256(bytes(b));\n }\n}\n"
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},
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"contracts/activity/CECDistributor.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\nimport {ReentrancyGuard} from \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport {Pausable} from \"@openzeppelin/contracts/security/Pausable.sol\";\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {Ownable} from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport {Governable} from \"../core/Governable.sol\";\n\n/**\n * @title CECDistributor\n * @dev CECDistributor is a contract for distributing CEC token with unlock time\n * after all data is set, transfer owner to timelock contract\n */\ncontract CECDistributor is ReentrancyGuard, Pausable, Ownable, Governable {\n using SafeERC20 for IERC20;\n\n mapping(address account => uint256 amount) public balanceMap;\n // unlock time for this distributor\n uint256 public unlockTime;\n\n IERC20 public immutable cecToken;\n\n event EventBalanceUpdated(address indexed account, uint256 amount);\n event EventUnlockTimeUpdated(uint256 unlockTime);\n event EventCECClaimed(address indexed user, address indexed to, uint256 amount);\n\n constructor(address _cecToken, uint256 _unlockTime) {\n cecToken = IERC20(_cecToken);\n unlockTime = _unlockTime;\n }\n\n /**\n * @dev Throws if called by any account other than the owner or gov.\n */\n modifier ownerOrGov() {\n require(msg.sender == owner() || msg.sender == gov, \"CECDistributor: forbidden\");\n _;\n }\n\n function setGov(address _gov) external override onlyOwner {\n gov = _gov;\n }\n /**\n * @dev update pause state\n * When encountering special circumstances that require an emergency pause of the contract, \n * the pause function can be called by the gov account to quickly pause the contract and minimize losses.\n */\n function pause() external ownerOrGov {\n _pause();\n }\n\n /**\n * @dev update unpause state\n */\n function unpause() external ownerOrGov {\n _unpause();\n }\n\n function updateBalance(address account, uint256 amount) external onlyOwner {\n balanceMap[account] = amount;\n emit EventBalanceUpdated(account, amount);\n }\n\n function updateBalances(address[] calldata accounts, uint256[] calldata amounts) external onlyOwner {\n require(accounts.length == amounts.length, \"CECDistributor: invalid input\");\n for (uint256 i = 0; i < accounts.length; i++) {\n balanceMap[accounts[i]] = amounts[i];\n emit EventBalanceUpdated(accounts[i], amounts[i]);\n }\n }\n\n function updateUnlockTime(uint256 _unlockTime) external onlyOwner {\n unlockTime = _unlockTime;\n emit EventUnlockTimeUpdated(_unlockTime);\n }\n\n function withdrawToken(address to, uint256 amount) external onlyOwner {\n require(to != address(0), \"CECDistributor: invalid address\");\n cecToken.safeTransfer(to, amount);\n }\n\n function claim(address to) external nonReentrant whenNotPaused {\n require(block.timestamp > unlockTime, \"CECDistributor: not unlock time\");\n require(to != address(0), \"CECDistributor: invalid address\");\n address _user = _msgSender();\n uint256 amount = balanceMap[_user];\n require(amount > 0, \"CECDistributor: no balance\");\n balanceMap[_user] = 0;\n cecToken.safeTransfer(to, amount);\n emit EventCECClaimed(_user, to, amount);\n }\n}\n"
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},
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"contracts/core/CFTimelockController.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\nimport {TimelockController} from \"@openzeppelin/contracts/governance/TimelockController.sol\";\n\ncontract CFTimelockController is TimelockController {\n constructor(\n uint256 minDelay,\n address[] memory proposers,\n address[] memory executors,\n address admin\n ) TimelockController(minDelay, proposers, executors, admin) {}\n}\n"
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},
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"contracts/core/Governable.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\ncontract Governable {\n address public gov;\n\n constructor() {\n gov = msg.sender;\n }\n\n modifier onlyGov() {\n require(msg.sender == gov, \"Governable: forbidden\");\n _;\n }\n\n function setGov(address _gov) external virtual onlyGov {\n gov = _gov;\n }\n}\n"
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},
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"contracts/interfaces/IMintable.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\ninterface IMintable {\n function isMinter(address _account) external returns (bool);\n function setMinter(address _minter, bool _isActive) external;\n function mint(address _account, uint256 _amount) external;\n function burn(address _account, uint256 _amount) external;\n}"
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},
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"contracts/staking/interfaces/IRewardDistributor.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\ninterface IRewardDistributor {\n function rewardToken() external view returns (address);\n function tokensPerInterval() external view returns (uint256);\n function pendingRewards() external view returns (uint256);\n function distribute(uint256 _amount, uint256 _decimals) external returns (uint256);\n}\n"
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},
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"contracts/staking/interfaces/IRewardTracker.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\ninterface IRewardTracker {\n function depositBalances(address _account, address _depositToken) external view returns (uint256);\n function stakedAmounts(address _account) external view returns (uint256);\n function updateRewards() external;\n function stake(address _depositToken, uint256 _amount) external;\n function stakeForAccount(address _fundingAccount, address _account, address _depositToken, uint256 _amount) external;\n function unstake(address _depositToken, uint256 _amount) external;\n function unstakeForAccount(address _account, address _depositToken, uint256 _amount, address _receiver) external;\n function tokensPerInterval() external view returns (uint256);\n function claim(address _receiver) external returns (uint256);\n function claimForAccount(address _account, address _receiver) external returns (uint256);\n function claimable(address _account) external view returns (uint256);\n function averageStakedAmounts(address _account) external view returns (uint256);\n function cumulativeRewards(address _account) external view returns (uint256);\n}\n"
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},
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"contracts/staking/interfaces/IVester.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\ninterface IVester {\n function needCheckStake() external view returns (bool);\n function updateVesting(address _account) external;\n\n function rewardTracker() external view returns (address);\n\n function claimForAccount(address _account, address _receiver) external returns (uint256);\n\n function claimable(address _account) external view returns (uint256);\n function cumulativeClaimAmounts(address _account) external view returns (uint256);\n function claimedAmounts(address _account) external view returns (uint256);\n function pairAmounts(address _account) external view returns (uint256);\n function getVestedAmount(address _account) external view returns (uint256);\n function cumulativeRewardDeductions(address _account) external view returns (uint256);\n function bonusRewards(address _account) external view returns (uint256);\n\n function setCumulativeRewardDeductions(address _account, uint256 _amount) external;\n function setBonusRewards(address _account, uint256 _amount) external;\n\n function getMaxVestableAmount(address _account) external view returns (uint256);\n function getCombinedAverageStakedAmount(address _account) external view returns (uint256);\n}\n"
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},
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"contracts/staking/RewardDistributor.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {ReentrancyGuard} from \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\n\nimport {IRewardDistributor} from \"./interfaces/IRewardDistributor.sol\";\nimport {IRewardTracker} from \"./interfaces/IRewardTracker.sol\";\nimport {Governable} from \"../core/Governable.sol\";\n\ncontract RewardDistributor is IRewardDistributor, ReentrancyGuard, Governable {\n using SafeERC20 for IERC20;\n\n address public override rewardToken;\n uint256 public override tokensPerInterval;\n uint256 public lastDistributionTime;\n address public rewardTracker;\n\n address public admin;\n\n event Distribute(uint256 amount);\n event TokensPerIntervalChange(uint256 amount);\n\n modifier onlyAdmin() {\n require(msg.sender == admin, \"RewardDistributor: forbidden\");\n _;\n }\n\n constructor(address _rewardToken, address _rewardTracker) {\n rewardToken = _rewardToken;\n rewardTracker = _rewardTracker;\n admin = msg.sender;\n }\n\n function setAdmin(address _admin) external onlyGov {\n admin = _admin;\n }\n\n // to help users who accidentally send their tokens to this contract\n function withdrawToken(address _token, address _account, uint256 _amount) external onlyGov {\n IERC20(_token).safeTransfer(_account, _amount);\n }\n\n function updateLastDistributionTime() external onlyAdmin {\n lastDistributionTime = block.timestamp;\n }\n\n function setTokensPerInterval(uint256 _amount) external onlyAdmin {\n require(lastDistributionTime != 0, \"RewardDistributor: invalid lastDistributionTime\");\n IRewardTracker(rewardTracker).updateRewards();\n tokensPerInterval = _amount;\n emit TokensPerIntervalChange(_amount);\n }\n\n function pendingRewards() public view override returns (uint256) {\n if (block.timestamp == lastDistributionTime) {\n return 0;\n }\n\n uint256 timeDiff = block.timestamp - lastDistributionTime;\n return tokensPerInterval * timeDiff;\n }\n\n function distribute(uint256 _amount, uint256 _decimals) external override returns (uint256) {\n require(msg.sender == rewardTracker, \"RewardDistributor: invalid msg.sender\");\n uint256 amount = pendingRewards();\n if (amount == 0) {\n return 0;\n }\n\n lastDistributionTime = block.timestamp;\n\n uint256 tokenAmount = amount * _amount / (10**_decimals);\n\n uint256 balance = IERC20(rewardToken).balanceOf(address(this));\n require(tokenAmount <= balance, \"RewardDistributor: insufficient balance\");\n \n IERC20(rewardToken).safeTransfer(msg.sender, tokenAmount);\n\n emit Distribute(tokenAmount);\n return amount;\n }\n}\n"
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},
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"contracts/staking/RewardRouter.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {ReentrancyGuard} from \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\n\nimport {IRewardTracker} from \"./interfaces/IRewardTracker.sol\";\nimport {IVester} from \"./interfaces/IVester.sol\";\nimport {Governable} from \"../core/Governable.sol\";\n\ncontract RewardRouter is ReentrancyGuard, Governable {\n using SafeERC20 for IERC20;\n\n address public cec;\n address public esCec;\n\n address public stakedCecTracker;\n address public cecVester;\n\n event StakeCec(address account, address token, uint256 amount);\n event UnstakeCec(address account, address token, uint256 amount);\n\n constructor(address _cec, address _esCec, address _stakedCecTracker, address _cecVester) {\n cec = _cec;\n esCec = _esCec;\n stakedCecTracker = _stakedCecTracker;\n cecVester = _cecVester;\n }\n\n // to help users who accidentally send their tokens to this contract\n function withdrawToken(address _token, address _account, uint256 _amount) external onlyGov {\n IERC20(_token).safeTransfer(_account, _amount);\n }\n\n function batchStakeCecForAccount(\n address[] memory _accounts,\n uint256[] memory _amounts\n ) external nonReentrant onlyGov {\n address _cec = cec;\n for (uint256 i = 0; i < _accounts.length; i++) {\n _stakeCec(msg.sender, _accounts[i], _cec, _amounts[i]);\n }\n }\n\n function stakeCecForAccount(address _account, uint256 _amount) external nonReentrant onlyGov {\n _stakeCec(msg.sender, _account, cec, _amount);\n }\n\n function stakeCec(uint256 _amount) external nonReentrant {\n _stakeCec(msg.sender, msg.sender, cec, _amount);\n }\n\n function stakeEsCec(uint256 _amount) external nonReentrant {\n _stakeCec(msg.sender, msg.sender, esCec, _amount);\n }\n\n function unstakeCec(uint256 _amount) external nonReentrant {\n // check if the user has staked CEC in the vester\n if (IVester(cecVester).needCheckStake()) {\n IVester(cecVester).updateVesting(msg.sender);\n require(IERC20(cecVester).balanceOf(msg.sender) + _amount <= IRewardTracker(stakedCecTracker).depositBalances(msg.sender, cec), \"RewardRouter: insufficient CEC balance\");\n }\n _unstakeCec(msg.sender, cec, _amount);\n }\n\n function unstakeEsCec(uint256 _amount) external nonReentrant {\n _unstakeCec(msg.sender, esCec, _amount);\n }\n\n function claim() external nonReentrant {\n address account = msg.sender;\n IRewardTracker(stakedCecTracker).claimForAccount(account, account);\n }\n\n function handleRewards(\n bool _shouldClaimCec,\n bool _shouldStakeCec,\n bool _shouldClaimEsCec,\n bool _shouldStakeEsCec\n ) external nonReentrant {\n address account = msg.sender;\n\n uint256 cecAmount = 0;\n if (_shouldClaimCec) {\n cecAmount = IVester(cecVester).claimForAccount(account, account);\n }\n\n if (_shouldStakeCec && cecAmount > 0) {\n _stakeCec(account, account, cec, cecAmount);\n }\n\n uint256 esCecAmount = 0;\n if (_shouldClaimEsCec) {\n esCecAmount = IRewardTracker(stakedCecTracker).claimForAccount(account, account);\n }\n\n if (_shouldStakeEsCec && esCecAmount > 0) {\n _stakeCec(account, account, esCec, esCecAmount);\n }\n }\n\n function _stakeCec(address _fundingAccount, address _account, address _token, uint256 _amount) private {\n require(_amount > 0, \"invalid _amount\");\n\n IRewardTracker(stakedCecTracker).stakeForAccount(_fundingAccount, _account, _token, _amount);\n\n emit StakeCec(_account, _token, _amount);\n }\n\n function _unstakeCec(address _account, address _token, uint256 _amount) private {\n require(_amount > 0, \"invalid _amount\");\n // uint256 balance = IRewardTracker(stakedCecTracker).stakedAmounts(_account);\n IRewardTracker(stakedCecTracker).unstakeForAccount(_account, _token, _amount, _account);\n\n emit UnstakeCec(_account, _token, _amount);\n }\n}\n"
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},
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"contracts/staking/RewardTracker.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {ReentrancyGuard} from \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\n\nimport {IRewardDistributor} from \"./interfaces/IRewardDistributor.sol\";\nimport {IRewardTracker} from \"./interfaces/IRewardTracker.sol\";\nimport {Governable} from \"../core/Governable.sol\";\n\ncontract RewardTracker is IERC20, ReentrancyGuard, IRewardTracker, Governable {\n using SafeERC20 for IERC20;\n\n uint256 public constant BASIS_POINTS_DIVISOR = 10000;\n uint256 public constant PRECISION = 1e30;\n\n bool public isInitialized;\n\n string public name;\n string public symbol;\n uint8 public decimals = 18;\n uint256 public override totalSupply;\n mapping(address account => uint256 amount) public balances;\n mapping(address owner => mapping(address spender => uint256 amount)) public allowance;\n\n address public distributor;\n mapping(address token => bool status) public isDepositToken;\n mapping(address account => mapping(address token => uint256 amount)) public override depositBalances;\n mapping(address token => uint256 amount) public totalDepositSupply;\n \n uint256 public cumulativeRewardPerToken;\n mapping(address account => uint256 amount) public override stakedAmounts;\n mapping(address account => uint256 amount) public claimableReward;\n mapping(address account => uint256 amount) public previousCumulatedRewardPerToken;\n mapping(address account => uint256 amount) public override cumulativeRewards;\n mapping(address account => uint256 amount) public override averageStakedAmounts;\n\n bool public inPrivateTransferMode;\n bool public inPrivateStakingMode;\n bool public inPrivateClaimingMode;\n mapping(address handler => bool status) public isHandler;\n\n event Claim(address receiver, uint256 amount);\n\n constructor(string memory _name, string memory _symbol) {\n name = _name;\n symbol = _symbol;\n }\n\n function initialize(address[] memory _depositTokens, address _distributor) external onlyGov {\n require(!isInitialized, \"RewardTracker: already initialized\");\n isInitialized = true;\n\n for (uint256 i = 0; i < _depositTokens.length; i++) {\n address depositToken = _depositTokens[i];\n isDepositToken[depositToken] = true;\n }\n\n distributor = _distributor;\n }\n\n function setDepositToken(address _depositToken, bool _isDepositToken) external onlyGov {\n isDepositToken[_depositToken] = _isDepositToken;\n }\n\n function setInPrivateTransferMode(bool _inPrivateTransferMode) external onlyGov {\n inPrivateTransferMode = _inPrivateTransferMode;\n }\n\n function setInPrivateStakingMode(bool _inPrivateStakingMode) external onlyGov {\n inPrivateStakingMode = _inPrivateStakingMode;\n }\n\n function setInPrivateClaimingMode(bool _inPrivateClaimingMode) external onlyGov {\n inPrivateClaimingMode = _inPrivateClaimingMode;\n }\n\n function setHandler(address _handler, bool _isActive) external onlyGov {\n isHandler[_handler] = _isActive;\n }\n\n // to help users who accidentally send their tokens to this contract\n function withdrawToken(address _token, address _account, uint256 _amount) external onlyGov {\n IERC20(_token).safeTransfer(_account, _amount);\n }\n\n function balanceOf(address _account) external view override returns (uint256) {\n return balances[_account];\n }\n\n function stake(address _depositToken, uint256 _amount) external override nonReentrant {\n if (inPrivateStakingMode) {\n revert(\"RewardTracker: action not enabled\");\n }\n _stake(msg.sender, msg.sender, _depositToken, _amount);\n }\n\n function stakeForAccount(\n address _fundingAccount,\n address _account,\n address _depositToken,\n uint256 _amount\n ) external override nonReentrant {\n _validateHandler();\n _stake(_fundingAccount, _account, _depositToken, _amount);\n }\n\n function unstake(address _depositToken, uint256 _amount) external override nonReentrant {\n if (inPrivateStakingMode) {\n revert(\"RewardTracker: action not enabled\");\n }\n _unstake(msg.sender, _depositToken, _amount, msg.sender);\n }\n\n function unstakeForAccount(\n address _account,\n address _depositToken,\n uint256 _amount,\n address _receiver\n ) external override nonReentrant {\n _validateHandler();\n _unstake(_account, _depositToken, _amount, _receiver);\n }\n\n function transfer(address _recipient, uint256 _amount) external override returns (bool) {\n _transfer(msg.sender, _recipient, _amount);\n return true;\n }\n\n \n function approve(address _spender, uint256 _amount) external override returns (bool) {\n _approve(msg.sender, _spender, _amount);\n return true;\n }\n\n function transferFrom(address _sender, address _recipient, uint256 _amount) external override returns (bool) {\n if (isHandler[msg.sender]) {\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n require(allowance[_sender][msg.sender] >= _amount, \"RewardTracker: transfer amount exceeds allowance\");\n uint256 nextAllowance = allowance[_sender][msg.sender] - _amount;\n _approve(_sender, msg.sender, nextAllowance);\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n\n function tokensPerInterval() external view override returns (uint256) {\n return IRewardDistributor(distributor).tokensPerInterval();\n }\n\n function updateRewards() external override nonReentrant {\n _updateRewards(address(0));\n }\n\n function claim(address _receiver) external override nonReentrant returns (uint256) {\n if (inPrivateClaimingMode) {\n revert(\"RewardTracker: action not enabled\");\n }\n return _claim(msg.sender, _receiver);\n }\n\n function claimForAccount(address _account, address _receiver) external override nonReentrant returns (uint256) {\n _validateHandler();\n return _claim(_account, _receiver);\n }\n\n function claimable(address _account) public view override returns (uint256) {\n uint256 stakedAmount = stakedAmounts[_account];\n if (stakedAmount == 0) {\n return claimableReward[_account];\n }\n uint256 pendingRewards = IRewardDistributor(distributor).pendingRewards() * PRECISION;\n uint256 nextCumulativeRewardPerToken = cumulativeRewardPerToken + pendingRewards;\n return\n claimableReward[_account] +\n (stakedAmount / (10**decimals) * (nextCumulativeRewardPerToken - previousCumulatedRewardPerToken[_account])) /\n PRECISION;\n }\n\n function rewardToken() public view returns (address) {\n return IRewardDistributor(distributor).rewardToken();\n }\n\n function _claim(address _account, address _receiver) private returns (uint256) {\n _updateRewards(_account);\n\n uint256 tokenAmount = claimableReward[_account];\n claimableReward[_account] = 0;\n\n if (tokenAmount > 0) {\n IERC20(rewardToken()).safeTransfer(_receiver, tokenAmount);\n emit Claim(_account, tokenAmount);\n }\n\n return tokenAmount;\n }\n\n function _mint(address _account, uint256 _amount) internal {\n require(_account != address(0), \"RewardTracker: mint to the zero address\");\n\n totalSupply = totalSupply + _amount;\n balances[_account] = balances[_account] + _amount;\n\n emit Transfer(address(0), _account, _amount);\n }\n\n function _burn(address _account, uint256 _amount) internal {\n require(_account != address(0), \"RewardTracker: burn from the zero address\");\n require(balances[_account] >= _amount, \"RewardTracker: burn amount exceeds balance\");\n balances[_account] = balances[_account] - _amount;\n totalSupply = totalSupply / _amount;\n\n emit Transfer(_account, address(0), _amount);\n }\n\n function _transfer(address _sender, address _recipient, uint256 _amount) private {\n require(_sender != address(0), \"RewardTracker: transfer from the zero address\");\n require(_recipient != address(0), \"RewardTracker: transfer to the zero address\");\n\n if (inPrivateTransferMode) {\n _validateHandler();\n }\n require(balances[_sender] >= _amount, \"RewardTracker: transfer amount exceeds balance\");\n balances[_sender] = balances[_sender] - _amount;\n balances[_recipient] = balances[_recipient] + _amount;\n\n emit Transfer(_sender, _recipient, _amount);\n }\n\n function _approve(address _owner, address _spender, uint256 _amount) private {\n require(_owner != address(0), \"RewardTracker: approve from the zero address\");\n require(_spender != address(0), \"RewardTracker: approve to the zero address\");\n\n allowance[_owner][_spender] = _amount;\n\n emit Approval(_owner, _spender, _amount);\n }\n\n function _validateHandler() private view {\n require(isHandler[msg.sender], \"RewardTracker: forbidden\");\n }\n\n function _stake(address _fundingAccount, address _account, address _depositToken, uint256 _amount) private {\n require(_amount > 0, \"RewardTracker: invalid _amount\");\n require(isDepositToken[_depositToken], \"RewardTracker: invalid _depositToken\");\n\n IERC20(_depositToken).safeTransferFrom(_fundingAccount, address(this), _amount);\n\n _updateRewards(_account);\n\n stakedAmounts[_account] = stakedAmounts[_account] + _amount;\n depositBalances[_account][_depositToken] = depositBalances[_account][_depositToken] + _amount;\n totalDepositSupply[_depositToken] = totalDepositSupply[_depositToken] + _amount;\n\n _mint(_account, _amount);\n }\n\n function _unstake(address _account, address _depositToken, uint256 _amount, address _receiver) private {\n require(_amount > 0, \"RewardTracker: invalid _amount\");\n require(isDepositToken[_depositToken], \"RewardTracker: invalid _depositToken\");\n\n _updateRewards(_account);\n\n uint256 stakedAmount = stakedAmounts[_account];\n require(stakedAmounts[_account] >= _amount, \"RewardTracker: _amount exceeds stakedAmount\");\n\n stakedAmounts[_account] = stakedAmount - _amount;\n\n uint256 depositBalance = depositBalances[_account][_depositToken];\n require(depositBalance >= _amount, \"RewardTracker: _amount exceeds depositBalance\");\n depositBalances[_account][_depositToken] = depositBalance - _amount;\n totalDepositSupply[_depositToken] = totalDepositSupply[_depositToken] - _amount;\n\n _burn(_account, _amount);\n IERC20(_depositToken).safeTransfer(_receiver, _amount);\n }\n\n function _updateRewards(address _account) private {\n uint256 supply = totalSupply;\n uint256 blockReward = IRewardDistributor(distributor).distribute(supply, decimals);\n\n \n uint256 _cumulativeRewardPerToken = cumulativeRewardPerToken;\n if (supply > 0 && blockReward > 0) {\n _cumulativeRewardPerToken = _cumulativeRewardPerToken + blockReward * PRECISION;\n cumulativeRewardPerToken = _cumulativeRewardPerToken;\n }\n\n // cumulativeRewardPerToken can only increase\n // so if cumulativeRewardPerToken is zero, it means there are no rewards yet\n if (_cumulativeRewardPerToken == 0) {\n return;\n }\n\n if (_account != address(0)) {\n uint256 stakedAmount = stakedAmounts[_account];\n uint256 accountReward = (stakedAmount / (10**decimals) * (_cumulativeRewardPerToken - previousCumulatedRewardPerToken[_account])) /\n PRECISION;\n uint256 _claimableReward = claimableReward[_account] + accountReward;\n\n claimableReward[_account] = _claimableReward;\n previousCumulatedRewardPerToken[_account] = _cumulativeRewardPerToken;\n\n if (_claimableReward > 0 && stakedAmounts[_account] > 0) {\n uint256 nextCumulativeReward = cumulativeRewards[_account] + accountReward;\n\n averageStakedAmounts[_account] =\n (averageStakedAmounts[_account] * cumulativeRewards[_account]) /\n nextCumulativeReward +\n (stakedAmount / (10**decimals) * accountReward) /\n nextCumulativeReward;\n\n cumulativeRewards[_account] = nextCumulativeReward;\n }\n }\n }\n}\n"
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},
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"contracts/staking/Vester.sol": {
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"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.19;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {ReentrancyGuard} from \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {IVester} from \"./interfaces/IVester.sol\";\nimport {IRewardTracker} from \"./interfaces/IRewardTracker.sol\";\nimport {Governable} from \"../core/Governable.sol\";\nimport {IMintable} from \"../interfaces/IMintable.sol\";\n\ncontract Vester is IVester, IERC20, ReentrancyGuard, Governable {\n using SafeERC20 for IERC20;\n\n string public name;\n string public symbol;\n uint8 public decimals = 18;\n uint256 public vestingDuration;\n address public esToken;\n address public pairToken;\n address public claimableToken;\n\n address public override rewardTracker;\n\n uint256 public override totalSupply;\n uint256 public pairSupply;\n bool public needCheckStake;\n\n mapping(address account => uint256 amount) public balances;\n mapping(address account => uint256 amount) public override pairAmounts;\n mapping(address account => uint256 amount) public override cumulativeClaimAmounts;\n mapping(address account => uint256 amount) public override claimedAmounts;\n mapping(address account => uint256 time) public lastVestingTimes;\n\n mapping(address account => uint256 amount) public override cumulativeRewardDeductions;\n mapping(address account => uint256 amount) public override bonusRewards;\n\n mapping(address handler => bool status) public isHandler;\n\n event Claim(address receiver, uint256 amount);\n event Deposit(address account, uint256 amount);\n event Withdraw(address account, uint256 claimedAmount, uint256 balance);\n event PairTransfer(address indexed from, address indexed to, uint256 value);\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint256 _vestingDuration,\n address _esToken,\n address _pairToken,\n address _claimableToken,\n address _rewardTracker,\n bool _needCheckStake\n ) {\n name = _name;\n symbol = _symbol;\n vestingDuration = _vestingDuration;\n esToken = _esToken;\n pairToken = _pairToken;\n claimableToken = _claimableToken;\n rewardTracker = _rewardTracker;\n needCheckStake = _needCheckStake;\n }\n\n function setHandler(address _handler, bool _isActive) external onlyGov {\n isHandler[_handler] = _isActive;\n }\n\n function deposit(uint256 _amount) external nonReentrant {\n _deposit(msg.sender, _amount);\n }\n\n function depositForAccount(address _account, uint256 _amount) external nonReentrant {\n _validateHandler();\n _deposit(_account, _amount);\n }\n\n function claim() external nonReentrant returns (uint256) {\n return _claim(msg.sender, msg.sender);\n }\n\n function claimForAccount(address _account, address _receiver) external override nonReentrant returns (uint256) {\n _validateHandler();\n return _claim(_account, _receiver);\n }\n\n // to help users who accidentally send their tokens to this contract\n function withdrawToken(address _token, address _account, uint256 _amount) external onlyGov {\n IERC20(_token).safeTransfer(_account, _amount);\n }\n\n function withdraw() external nonReentrant {\n address account = msg.sender;\n address _receiver = account;\n _claim(account, _receiver);\n\n uint256 claimedAmount = cumulativeClaimAmounts[account];\n uint256 balance = balances[account];\n uint256 totalVested = balance + claimedAmount;\n require(totalVested > 0, \"Vester: vested amount is zero\");\n\n if (hasPairToken()) {\n uint256 pairAmount = pairAmounts[account];\n _burnPair(account, pairAmount);\n IERC20(pairToken).safeTransfer(_receiver, pairAmount);\n }\n\n IERC20(esToken).safeTransfer(_receiver, balance);\n _burn(account, balance);\n\n delete cumulativeClaimAmounts[account];\n delete claimedAmounts[account];\n delete lastVestingTimes[account];\n\n emit Withdraw(account, claimedAmount, balance);\n }\n\n function setRewardTracker(address _rewardTracker) external onlyGov {\n rewardTracker = _rewardTracker;\n }\n\n function setCumulativeRewardDeductions(address _account, uint256 _amount) external override nonReentrant {\n _validateHandler();\n cumulativeRewardDeductions[_account] = _amount;\n }\n\n function setBonusRewards(address _account, uint256 _amount) external override nonReentrant {\n _validateHandler();\n bonusRewards[_account] = _amount;\n }\n\n function getMaxVestableAmount(address _account) public view override returns (uint256) {\n uint256 maxVestableAmount = bonusRewards[_account];\n\n if (hasRewardTracker()) {\n uint256 cumulativeReward = IRewardTracker(rewardTracker).cumulativeRewards(_account);\n maxVestableAmount = maxVestableAmount + cumulativeReward;\n }\n\n uint256 cumulativeRewardDeduction = cumulativeRewardDeductions[_account];\n\n if (maxVestableAmount < cumulativeRewardDeduction) {\n return 0;\n }\n\n return maxVestableAmount - cumulativeRewardDeduction;\n }\n\n function getCombinedAverageStakedAmount(address _account) public view override returns (uint256) {\n if (!hasRewardTracker()) {\n return 0;\n }\n \n uint256 cumulativeReward = IRewardTracker(rewardTracker).cumulativeRewards(_account);\n if (cumulativeReward == 0) {\n return 0;\n }\n\n return IRewardTracker(rewardTracker).averageStakedAmounts(_account);\n }\n\n function getPairAmount(address _account, uint256 _esAmount) public view returns (uint256) {\n if (!hasRewardTracker()) {\n return 0;\n }\n\n uint256 combinedAverageStakedAmount = getCombinedAverageStakedAmount(_account);\n if (combinedAverageStakedAmount == 0) {\n return 0;\n }\n\n uint256 maxVestableAmount = getMaxVestableAmount(_account);\n if (maxVestableAmount == 0) {\n return 0;\n }\n\n return (_esAmount * combinedAverageStakedAmount) / maxVestableAmount;\n }\n\n function hasRewardTracker() public view returns (bool) {\n return rewardTracker != address(0);\n }\n\n function hasPairToken() public view returns (bool) {\n return pairToken != address(0);\n }\n\n function getTotalVested(address _account) public view returns (uint256) {\n return balances[_account] + cumulativeClaimAmounts[_account];\n }\n\n function balanceOf(address _account) public view override returns (uint256) {\n return balances[_account];\n }\n\n // empty implementation, tokens are non-transferrable\n function transfer(address /* recipient */, uint256 /* amount */) public virtual override returns (bool) {\n revert(\"Vester: non-transferrable\");\n }\n\n // empty implementation, tokens are non-transferrable\n function allowance(address /* owner */, address /* spender */) public view virtual override returns (uint256) {\n return 0;\n }\n\n // empty implementation, tokens are non-transferrable\n function approve(address /* spender */, uint256 /* amount */) public virtual override returns (bool) {\n revert(\"Vester: non-transferrable\");\n }\n\n // empty implementation, tokens are non-transferrable\n function transferFrom(\n address /* sender */,\n address /* recipient */,\n uint256 /* amount */\n ) public virtual override returns (bool) {\n revert(\"Vester: non-transferrable\");\n }\n\n function getVestedAmount(address _account) public view override returns (uint256) {\n uint256 balance = balances[_account];\n uint256 cumulativeClaimAmount = cumulativeClaimAmounts[_account];\n return balance + cumulativeClaimAmount;\n }\n\n function _mint(address _account, uint256 _amount) private {\n require(_account != address(0), \"Vester: mint to the zero address\");\n\n totalSupply = totalSupply + _amount;\n balances[_account] = balances[_account] + _amount;\n\n emit Transfer(address(0), _account, _amount);\n }\n\n function _mintPair(address _account, uint256 _amount) private {\n require(_account != address(0), \"Vester: mint to the zero address\");\n\n pairSupply = pairSupply + _amount;\n pairAmounts[_account] = pairAmounts[_account] + _amount;\n\n emit PairTransfer(address(0), _account, _amount);\n }\n\n function _burn(address _account, uint256 _amount) private {\n require(_account != address(0), \"Vester: burn from the zero address\");\n require(balances[_account] >= _amount, \"Vester: balance is not enough\");\n balances[_account] = balances[_account] - _amount;\n totalSupply = totalSupply - _amount;\n\n emit Transfer(_account, address(0), _amount);\n }\n\n function _burnPair(address _account, uint256 _amount) private {\n require(_account != address(0), \"Vester: burn from the zero address\");\n require(pairAmounts[_account] >= _amount, \"Vester: balance is not enough\");\n pairAmounts[_account] = pairAmounts[_account] - _amount;\n pairSupply = pairSupply - _amount;\n\n emit PairTransfer(_account, address(0), _amount);\n }\n /**\n * @dev Deposit ES tokens to the contract\n */\n function _deposit(address _account, uint256 _amount) private {\n require(_amount > 0, \"Vester: invalid _amount\");\n _updateVesting(_account);\n\n IERC20(esToken).safeTransferFrom(_account, address(this), _amount);\n\n _mint(_account, _amount);\n\n if (hasPairToken()) {\n uint256 pairAmount = pairAmounts[_account];\n uint256 nextPairAmount = getPairAmount(_account, balances[_account]);\n if (nextPairAmount > pairAmount) {\n uint256 pairAmountDiff = nextPairAmount - pairAmount;\n IERC20(pairToken).safeTransferFrom(_account, address(this), pairAmountDiff);\n _mintPair(_account, pairAmountDiff);\n }\n }\n if (needCheckStake && hasRewardTracker()) {\n // if u want to transfer 100 esCec to cec, u need to have 100 cec in stake\n uint256 cecAmount = IRewardTracker(rewardTracker).depositBalances(_account, claimableToken);\n require(balances[_account] <= cecAmount, \"Vester: insufficient cec balance\");\n }\n uint256 maxAmount = getMaxVestableAmount(_account);\n require(getTotalVested(_account) <= maxAmount, \"Vester: max vestable amount exceeded\");\n\n emit Deposit(_account, _amount);\n }\n\n function updateVesting(address _account) public {\n _updateVesting(_account);\n }\n\n function _updateVesting(address _account) public {\n uint256 amount = _getNextClaimableAmount(_account);\n lastVestingTimes[_account] = block.timestamp;\n\n if (amount == 0) {\n return;\n }\n\n // transfer claimableAmount from balances to cumulativeClaimAmounts\n _burn(_account, amount);\n cumulativeClaimAmounts[_account] = cumulativeClaimAmounts[_account] + amount;\n\n IMintable(esToken).burn(address(this), amount);\n }\n\n function _getNextClaimableAmount(address _account) private view returns (uint256) {\n uint256 timeDiff = block.timestamp - lastVestingTimes[_account];\n\n uint256 balance = balances[_account];\n if (balance == 0) {\n return 0;\n }\n uint256 vestedAmount = getVestedAmount(_account);\n uint256 claimableAmount = (vestedAmount * timeDiff) / vestingDuration;\n if (claimableAmount < balance) {\n return claimableAmount;\n }\n\n return balance;\n }\n\n function claimable(address _account) public view override returns (uint256) {\n uint256 amount = cumulativeClaimAmounts[_account] - claimedAmounts[_account];\n uint256 nextClaimable = _getNextClaimableAmount(_account);\n return amount + nextClaimable;\n }\n\n function _claim(address _account, address _receiver) private returns (uint256) {\n _updateVesting(_account);\n uint256 amount = claimable(_account);\n claimedAmounts[_account] = claimedAmounts[_account] + amount;\n IERC20(claimableToken).safeTransfer(_receiver, amount);\n emit Claim(_account, amount);\n return amount;\n }\n\n function _validateHandler() private view {\n require(isHandler[msg.sender], \"Vester: forbidden\");\n }\n}\n"
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},
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"contracts/test/MintableBaseToken.sol": {
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"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.19;\n\nimport {ERC20} from \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport {IMintable} from \"../interfaces/IMintable.sol\";\nimport {Governable} from \"../core/Governable.sol\";\n\ncontract MintableBaseToken is ERC20, IMintable, Governable {\n\n mapping (address => bool) public override isMinter;\n\n constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {\n }\n\n modifier onlyMinter() {\n require(isMinter[msg.sender], \"MintableBaseToken: forbidden\");\n _;\n }\n\n function setMinter(address _minter, bool _isActive) external override onlyGov {\n isMinter[_minter] = _isActive;\n }\n\n function mint(address _account, uint256 _amount) external override onlyMinter {\n _mint(_account, _amount);\n }\n\n function burn(address _account, uint256 _amount) external override onlyMinter {\n _burn(_account, _amount);\n }\n}\n"
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},
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"contracts/tokens/erc20/EsToken.sol": {
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"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.19;\n\nimport {ERC20} from \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport {IMintable} from \"../../interfaces/IMintable.sol\";\nimport {Governable} from \"../../core/Governable.sol\";\n\ncontract EsToken is ERC20, IMintable, Governable {\n bool public inPrivateTransferMode;\n\n mapping(address account => bool status) public override isMinter;\n\n mapping(address account => bool status) public isHandler;\n\n constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}\n\n modifier onlyMinter() {\n require(isMinter[msg.sender], \"EsToken: forbidden\");\n _;\n }\n\n function setMinter(address _minter, bool _isActive) external override onlyGov {\n isMinter[_minter] = _isActive;\n }\n\n function mint(address _account, uint256 _amount) external override onlyMinter {\n _mint(_account, _amount);\n }\n\n function burn(address _account, uint256 _amount) external override onlyMinter {\n _burn(_account, _amount);\n }\n\n function setInPrivateTransferMode(bool _inPrivateTransferMode) external onlyGov {\n inPrivateTransferMode = _inPrivateTransferMode;\n }\n\n function setHandler(address _handler, bool _isActive) external onlyGov {\n isHandler[_handler] = _isActive;\n }\n\n function transferFrom(address _sender, address _recipient, uint256 _amount) public override returns (bool) {\n if (isHandler[msg.sender]) {\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n _spendAllowance(_sender, msg.sender, _amount);\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {\n if (inPrivateTransferMode) {\n require(isHandler[msg.sender], \"EsToken: msg.sender not whitelisted\");\n }\n super._beforeTokenTransfer(from, to, amount);\n }\n}\n"
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},
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"contracts/tokens/erc20/EsToken2.sol": {
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"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.19;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {IMintable} from \"../../interfaces/IMintable.sol\";\nimport {Governable} from \"../../core/Governable.sol\";\n\ncontract EsToken2 is IERC20, IMintable, Governable {\n using SafeERC20 for IERC20;\n\n string public name;\n string public symbol;\n uint8 public decimals = 18;\n\n uint256 public override totalSupply;\n bool public inPrivateTransferMode;\n\n mapping(address => uint256) public balances;\n mapping(address => mapping(address => uint256)) public allowances;\n mapping(address => bool) public nonStakingAccounts;\n mapping(address => bool) public admins;\n\n mapping(address => bool) public override isMinter;\n\n mapping(address => bool) public isHandler;\n\n constructor(string memory _name, string memory _symbol) {\n name = _name;\n symbol = _symbol;\n }\n\n modifier onlyMinter() {\n require(isMinter[msg.sender], \"EsToken: forbidden\");\n _;\n }\n\n modifier onlyAdmin() {\n require(admins[msg.sender], \"BaseToken: forbidden\");\n _;\n }\n\n function setMinter(address _minter, bool _isActive) external override onlyGov {\n isMinter[_minter] = _isActive;\n }\n\n function addAdmin(address _account) external onlyGov {\n admins[_account] = true;\n }\n\n function removeAdmin(address _account) external onlyGov {\n admins[_account] = false;\n }\n\n function mint(address _account, uint256 _amount) external override onlyMinter {\n _mint(_account, _amount);\n }\n\n function burn(address _account, uint256 _amount) external override onlyMinter {\n _burn(_account, _amount);\n }\n\n function setInPrivateTransferMode(bool _inPrivateTransferMode) external onlyGov {\n inPrivateTransferMode = _inPrivateTransferMode;\n }\n\n function setHandler(address _handler, bool _isActive) external onlyGov {\n isHandler[_handler] = _isActive;\n }\n\n function balanceOf(address _account) external view override returns (uint256) {\n return balances[_account];\n }\n\n function stakedBalance(address _account) external view returns (uint256) {\n if (nonStakingAccounts[_account]) {\n return 0;\n }\n return balances[_account];\n }\n\n function transfer(address _recipient, uint256 _amount) external override returns (bool) {\n _transfer(msg.sender, _recipient, _amount);\n return true;\n }\n\n function allowance(address _owner, address _spender) external view override returns (uint256) {\n return allowances[_owner][_spender];\n }\n\n function approve(address _spender, uint256 _amount) external override returns (bool) {\n _approve(msg.sender, _spender, _amount);\n return true;\n }\n\n function transferFrom(address _sender, address _recipient, uint256 _amount) external override returns (bool) {\n if (isHandler[msg.sender]) {\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n require(allowances[_sender][msg.sender] >= _amount, \"EsToken: transfer amount exceeds allowance\");\n uint256 nextAllowance = allowances[_sender][msg.sender] - _amount;\n _approve(_sender, msg.sender, nextAllowance);\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n\n function _mint(address _account, uint256 _amount) internal {\n require(_account != address(0), \"EsToken: mint to the zero address\");\n\n totalSupply = totalSupply + _amount;\n balances[_account] = balances[_account] + _amount;\n\n emit Transfer(address(0), _account, _amount);\n }\n\n function _burn(address _account, uint256 _amount) internal {\n require(_account != address(0), \"EsToken: burn from the zero address\");\n\n require(balances[_account] >= _amount, \"EsToken: burn amount exceeds balance\");\n balances[_account] = balances[_account] - _amount;\n totalSupply = totalSupply - _amount;\n\n emit Transfer(_account, address(0), _amount);\n }\n\n function _transfer(address _sender, address _recipient, uint256 _amount) private {\n require(_sender != address(0), \"EsToken: transfer from the zero address\");\n require(_recipient != address(0), \"EsToken: transfer to the zero address\");\n\n if (inPrivateTransferMode) {\n require(isHandler[msg.sender], \"EsToken: msg.sender not whitelisted\");\n }\n\n require(balances[_sender] >= _amount, \"EsToken: transfer amount exceeds balance\");\n balances[_sender] = balances[_sender] - _amount;\n balances[_recipient] = balances[_recipient] + _amount;\n\n emit Transfer(_sender, _recipient, _amount);\n }\n\n function _approve(address _owner, address _spender, uint256 _amount) private {\n require(_owner != address(0), \"EsToken: approve from the zero address\");\n require(_spender != address(0), \"EsToken: approve to the zero address\");\n\n allowances[_owner][_spender] = _amount;\n\n emit Approval(_owner, _spender, _amount);\n }\n}\n"
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}
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},
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"settings": {
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"optimizer": {
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"enabled": true,
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"runs": 200
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},
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"viaIR": true,
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"outputSelection": {
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"*": {
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"*": [
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"abi",
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"evm.bytecode",
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"evm.deployedBytecode",
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"evm.methodIdentifiers",
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"metadata",
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"devdoc",
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"userdoc",
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"storageLayout",
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"evm.gasEstimates"
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],
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"": [
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"ast"
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]
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}
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},
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"metadata": {
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"useLiteralContent": true
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}
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}
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} |