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Latest 6 from a total of 6 transactions
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Stake | 63489655 | 7 days ago | IN | 0 POL | 0.00553224 | ||||
Withdraw Reward ... | 60572778 | 80 days ago | IN | 0 POL | 0.00182154 | ||||
Claim Rewards | 59987143 | 95 days ago | IN | 0 POL | 0.00280662 | ||||
Withdraw | 59987136 | 95 days ago | IN | 0 POL | 0.00354933 | ||||
Stake | 59852120 | 98 days ago | IN | 0 POL | 0.00590124 | ||||
Deposit Reward T... | 59401383 | 109 days ago | IN | 0 POL | 0.00268737 |
Latest 1 internal transaction
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59401280 | 109 days ago | Contract Creation | 0 POL |
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Minimal Proxy Contract for 0x0fd7345f5771f18d5b0b5faa3d02700ea0520f3d
Contract Name:
TokenStake
Compiler Version
v0.8.23+commit.f704f362
Optimization Enabled:
Yes with 20 runs
Other Settings:
london EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.11; /// @author thirdweb // $$\ $$\ $$\ $$\ $$\ // $$ | $$ | \__| $$ | $$ | // $$$$$$\ $$$$$$$\ $$\ $$$$$$\ $$$$$$$ |$$\ $$\ $$\ $$$$$$\ $$$$$$$\ // \_$$ _| $$ __$$\ $$ |$$ __$$\ $$ __$$ |$$ | $$ | $$ |$$ __$$\ $$ __$$\ // $$ | $$ | $$ |$$ |$$ | \__|$$ / $$ |$$ | $$ | $$ |$$$$$$$$ |$$ | $$ | // $$ |$$\ $$ | $$ |$$ |$$ | $$ | $$ |$$ | $$ | $$ |$$ ____|$$ | $$ | // \$$$$ |$$ | $$ |$$ |$$ | \$$$$$$$ |\$$$$$\$$$$ |\$$$$$$$\ $$$$$$$ | // \____/ \__| \__|\__|\__| \_______| \_____\____/ \_______|\_______/ // Token import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; // Meta transactions import "../../external-deps/openzeppelin/metatx/ERC2771ContextUpgradeable.sol"; // Utils import "../../extension/Multicall.sol"; import { CurrencyTransferLib } from "../../lib/CurrencyTransferLib.sol"; import "../../eip/interface/IERC20Metadata.sol"; // ========== Features ========== import "../../extension/ContractMetadata.sol"; import "../../extension/PermissionsEnumerable.sol"; import { Staking20Upgradeable } from "../../extension/Staking20Upgradeable.sol"; import "../interface/staking/ITokenStake.sol"; contract TokenStake is Initializable, ContractMetadata, PermissionsEnumerable, ERC2771ContextUpgradeable, Multicall, Staking20Upgradeable, ITokenStake { bytes32 private constant MODULE_TYPE = bytes32("TokenStake"); uint256 private constant VERSION = 1; /// @dev ERC20 Reward Token address. See {_mintRewards} below. address public rewardToken; /// @dev Total amount of reward tokens in the contract. uint256 private rewardTokenBalance; constructor(address _nativeTokenWrapper) initializer Staking20Upgradeable(_nativeTokenWrapper) {} /// @dev Initializes the contract, like a constructor. function initialize( address _defaultAdmin, string memory _contractURI, address[] memory _trustedForwarders, address _rewardToken, address _stakingToken, uint80 _timeUnit, uint256 _rewardRatioNumerator, uint256 _rewardRatioDenominator ) external initializer { __ERC2771Context_init_unchained(_trustedForwarders); require(_rewardToken != _stakingToken, "Reward Token and Staking Token can't be same."); rewardToken = _rewardToken; uint16 _stakingTokenDecimals = _stakingToken == CurrencyTransferLib.NATIVE_TOKEN ? 18 : IERC20Metadata(_stakingToken).decimals(); uint16 _rewardTokenDecimals = _rewardToken == CurrencyTransferLib.NATIVE_TOKEN ? 18 : IERC20Metadata(_rewardToken).decimals(); __Staking20_init(_stakingToken, _stakingTokenDecimals, _rewardTokenDecimals); _setStakingCondition(_timeUnit, _rewardRatioNumerator, _rewardRatioDenominator); _setupContractURI(_contractURI); _setupRole(DEFAULT_ADMIN_ROLE, _defaultAdmin); } /// @dev Returns the module type of the contract. function contractType() external pure virtual returns (bytes32) { return MODULE_TYPE; } /// @dev Returns the version of the contract. function contractVersion() external pure virtual returns (uint8) { return uint8(VERSION); } /// @dev Lets the contract receive ether to unwrap native tokens. receive() external payable { require(msg.sender == nativeTokenWrapper, "caller not native token wrapper."); } /// @dev Admin deposits reward tokens. function depositRewardTokens(uint256 _amount) external payable nonReentrant { require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Not authorized"); address _rewardToken = rewardToken == CurrencyTransferLib.NATIVE_TOKEN ? nativeTokenWrapper : rewardToken; uint256 balanceBefore = IERC20(_rewardToken).balanceOf(address(this)); CurrencyTransferLib.transferCurrencyWithWrapper( rewardToken, _msgSender(), address(this), _amount, nativeTokenWrapper ); uint256 actualAmount = IERC20(_rewardToken).balanceOf(address(this)) - balanceBefore; rewardTokenBalance += actualAmount; emit RewardTokensDepositedByAdmin(actualAmount); } /// @dev Admin can withdraw excess reward tokens. function withdrawRewardTokens(uint256 _amount) external nonReentrant { require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Not authorized"); // to prevent locking of direct-transferred tokens rewardTokenBalance = _amount > rewardTokenBalance ? 0 : rewardTokenBalance - _amount; CurrencyTransferLib.transferCurrencyWithWrapper( rewardToken, address(this), _msgSender(), _amount, nativeTokenWrapper ); // The withdrawal shouldn't reduce staking token balance. `>=` accounts for any accidental transfers. address _stakingToken = stakingToken == CurrencyTransferLib.NATIVE_TOKEN ? nativeTokenWrapper : stakingToken; require( IERC20(_stakingToken).balanceOf(address(this)) >= stakingTokenBalance, "Staking token balance reduced." ); emit RewardTokensWithdrawnByAdmin(_amount); } /// @notice View total rewards available in the staking contract. function getRewardTokenBalance() external view override returns (uint256) { return rewardTokenBalance; } /*/////////////////////////////////////////////////////////////// Transfer Staking Rewards //////////////////////////////////////////////////////////////*/ /// @dev Mint/Transfer ERC20 rewards to the staker. function _mintRewards(address _staker, uint256 _rewards) internal override { require(_rewards <= rewardTokenBalance, "Not enough reward tokens"); rewardTokenBalance -= _rewards; CurrencyTransferLib.transferCurrencyWithWrapper( rewardToken, address(this), _staker, _rewards, nativeTokenWrapper ); } /*/////////////////////////////////////////////////////////////// Internal functions //////////////////////////////////////////////////////////////*/ /// @dev Returns whether staking related restrictions can be set in the given execution context. function _canSetStakeConditions() internal view override returns (bool) { return hasRole(DEFAULT_ADMIN_ROLE, _msgSender()); } /// @dev Checks whether contract metadata can be set in the given execution context. function _canSetContractURI() internal view override returns (bool) { return hasRole(DEFAULT_ADMIN_ROLE, _msgSender()); } /*/////////////////////////////////////////////////////////////// Miscellaneous //////////////////////////////////////////////////////////////*/ function _stakeMsgSender() internal view virtual override returns (address) { return _msgSender(); } function _msgSender() internal view virtual override(ERC2771ContextUpgradeable, Multicall) returns (address sender) { return ERC2771ContextUpgradeable._msgSender(); } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address who) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function transfer(address to, uint256 value) external returns (bool); function approve(address spender, uint256 value) external returns (bool); function transferFrom(address from, address to, uint256 value) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /** * @title ERC20Metadata interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ interface IERC20Metadata { function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb import "./interface/IContractMetadata.sol"; /** * @title Contract Metadata * @notice Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI * for you contract. * Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea. */ abstract contract ContractMetadata is IContractMetadata { /// @notice Returns the contract metadata URI. string public override contractURI; /** * @notice Lets a contract admin set the URI for contract-level metadata. * @dev Caller should be authorized to setup contractURI, e.g. contract admin. * See {_canSetContractURI}. * Emits {ContractURIUpdated Event}. * * @param _uri keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") */ function setContractURI(string memory _uri) external override { if (!_canSetContractURI()) { revert("Not authorized"); } _setupContractURI(_uri); } /// @dev Lets a contract admin set the URI for contract-level metadata. function _setupContractURI(string memory _uri) internal { string memory prevURI = contractURI; contractURI = _uri; emit ContractURIUpdated(prevURI, _uri); } /// @dev Returns whether contract metadata can be set in the given execution context. function _canSetContractURI() internal view virtual returns (bool); }
// SPDX-License-Identifier: Apache 2.0 pragma solidity ^0.8.0; /// @author thirdweb import "../lib/Address.sol"; import "./interface/IMulticall.sol"; /** * @dev Provides a function to batch together multiple calls in a single external call. * * _Available since v4.1._ */ contract Multicall is IMulticall { /** * @notice Receives and executes a batch of function calls on this contract. * @dev Receives and executes a batch of function calls on this contract. * * @param data The bytes data that makes up the batch of function calls to execute. * @return results The bytes data that makes up the result of the batch of function calls executed. */ function multicall(bytes[] calldata data) external returns (bytes[] memory results) { results = new bytes[](data.length); address sender = _msgSender(); bool isForwarder = msg.sender != sender; for (uint256 i = 0; i < data.length; i++) { if (isForwarder) { results[i] = Address.functionDelegateCall(address(this), abi.encodePacked(data[i], sender)); } else { results[i] = Address.functionDelegateCall(address(this), data[i]); } } return results; } /// @notice Returns the sender in the given execution context. function _msgSender() internal view virtual returns (address) { return msg.sender; } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb import "./interface/IPermissions.sol"; import "../lib/Strings.sol"; /** * @title Permissions * @dev This contracts provides extending-contracts with role-based access control mechanisms */ contract Permissions is IPermissions { /// @dev Map from keccak256 hash of a role => a map from address => whether address has role. mapping(bytes32 => mapping(address => bool)) private _hasRole; /// @dev Map from keccak256 hash of a role to role admin. See {getRoleAdmin}. mapping(bytes32 => bytes32) private _getRoleAdmin; /// @dev Default admin role for all roles. Only accounts with this role can grant/revoke other roles. bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /// @dev Modifier that checks if an account has the specified role; reverts otherwise. modifier onlyRole(bytes32 role) { _checkRole(role, msg.sender); _; } /** * @notice Checks whether an account has a particular role. * @dev Returns `true` if `account` has been granted `role`. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param account Address of the account for which the role is being checked. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _hasRole[role][account]; } /** * @notice Checks whether an account has a particular role; * role restrictions can be swtiched on and off. * * @dev Returns `true` if `account` has been granted `role`. * Role restrictions can be swtiched on and off: * - If address(0) has ROLE, then the ROLE restrictions * don't apply. * - If address(0) does not have ROLE, then the ROLE * restrictions will apply. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param account Address of the account for which the role is being checked. */ function hasRoleWithSwitch(bytes32 role, address account) public view returns (bool) { if (!_hasRole[role][address(0)]) { return _hasRole[role][account]; } return true; } /** * @notice Returns the admin role that controls the specified role. * @dev See {grantRole} and {revokeRole}. * To change a role's admin, use {_setRoleAdmin}. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") */ function getRoleAdmin(bytes32 role) external view override returns (bytes32) { return _getRoleAdmin[role]; } /** * @notice Grants a role to an account, if not previously granted. * @dev Caller must have admin role for the `role`. * Emits {RoleGranted Event}. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param account Address of the account to which the role is being granted. */ function grantRole(bytes32 role, address account) public virtual override { _checkRole(_getRoleAdmin[role], msg.sender); if (_hasRole[role][account]) { revert("Can only grant to non holders"); } _setupRole(role, account); } /** * @notice Revokes role from an account. * @dev Caller must have admin role for the `role`. * Emits {RoleRevoked Event}. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param account Address of the account from which the role is being revoked. */ function revokeRole(bytes32 role, address account) public virtual override { _checkRole(_getRoleAdmin[role], msg.sender); _revokeRole(role, account); } /** * @notice Revokes role from the account. * @dev Caller must have the `role`, with caller being the same as `account`. * Emits {RoleRevoked Event}. * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param account Address of the account from which the role is being revoked. */ function renounceRole(bytes32 role, address account) public virtual override { if (msg.sender != account) { revert("Can only renounce for self"); } _revokeRole(role, account); } /// @dev Sets `adminRole` as `role`'s admin role. function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = _getRoleAdmin[role]; _getRoleAdmin[role] = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /// @dev Sets up `role` for `account` function _setupRole(bytes32 role, address account) internal virtual { _hasRole[role][account] = true; emit RoleGranted(role, account, msg.sender); } /// @dev Revokes `role` from `account` function _revokeRole(bytes32 role, address account) internal virtual { _checkRole(role, account); delete _hasRole[role][account]; emit RoleRevoked(role, account, msg.sender); } /// @dev Checks `role` for `account`. Reverts with a message including the required role. function _checkRole(bytes32 role, address account) internal view virtual { if (!_hasRole[role][account]) { revert( string( abi.encodePacked( "Permissions: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /// @dev Checks `role` for `account`. Reverts with a message including the required role. function _checkRoleWithSwitch(bytes32 role, address account) internal view virtual { if (!hasRoleWithSwitch(role, account)) { revert( string( abi.encodePacked( "Permissions: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb import "./interface/IPermissionsEnumerable.sol"; import "./Permissions.sol"; /** * @title PermissionsEnumerable * @dev This contracts provides extending-contracts with role-based access control mechanisms. * Also provides interfaces to view all members with a given role, and total count of members. */ contract PermissionsEnumerable is IPermissionsEnumerable, Permissions { /** * @notice A data structure to store data of members for a given role. * * @param index Current index in the list of accounts that have a role. * @param members map from index => address of account that has a role * @param indexOf map from address => index which the account has. */ struct RoleMembers { uint256 index; mapping(uint256 => address) members; mapping(address => uint256) indexOf; } /// @dev map from keccak256 hash of a role to its members' data. See {RoleMembers}. mapping(bytes32 => RoleMembers) private roleMembers; /** * @notice Returns the role-member from a list of members for a role, * at a given index. * @dev Returns `member` who has `role`, at `index` of role-members list. * See struct {RoleMembers}, and mapping {roleMembers} * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * @param index Index in list of current members for the role. * * @return member Address of account that has `role` */ function getRoleMember(bytes32 role, uint256 index) external view override returns (address member) { uint256 currentIndex = roleMembers[role].index; uint256 check; for (uint256 i = 0; i < currentIndex; i += 1) { if (roleMembers[role].members[i] != address(0)) { if (check == index) { member = roleMembers[role].members[i]; return member; } check += 1; } else if (hasRole(role, address(0)) && i == roleMembers[role].indexOf[address(0)]) { check += 1; } } } /** * @notice Returns total number of accounts that have a role. * @dev Returns `count` of accounts that have `role`. * See struct {RoleMembers}, and mapping {roleMembers} * * @param role keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE") * * @return count Total number of accounts that have `role` */ function getRoleMemberCount(bytes32 role) external view override returns (uint256 count) { uint256 currentIndex = roleMembers[role].index; for (uint256 i = 0; i < currentIndex; i += 1) { if (roleMembers[role].members[i] != address(0)) { count += 1; } } if (hasRole(role, address(0))) { count += 1; } } /// @dev Revokes `role` from `account`, and removes `account` from {roleMembers} /// See {_removeMember} function _revokeRole(bytes32 role, address account) internal override { super._revokeRole(role, account); _removeMember(role, account); } /// @dev Grants `role` to `account`, and adds `account` to {roleMembers} /// See {_addMember} function _setupRole(bytes32 role, address account) internal override { super._setupRole(role, account); _addMember(role, account); } /// @dev adds `account` to {roleMembers}, for `role` function _addMember(bytes32 role, address account) internal { uint256 idx = roleMembers[role].index; roleMembers[role].index += 1; roleMembers[role].members[idx] = account; roleMembers[role].indexOf[account] = idx; } /// @dev removes `account` from {roleMembers}, for `role` function _removeMember(bytes32 role, address account) internal { uint256 idx = roleMembers[role].indexOf[account]; delete roleMembers[role].members[idx]; delete roleMembers[role].indexOf[account]; } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.11; /// @author thirdweb import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import "../external-deps/openzeppelin/utils/math/SafeMath.sol"; import "../eip/interface/IERC20.sol"; import { CurrencyTransferLib } from "../lib/CurrencyTransferLib.sol"; import "./interface/IStaking20.sol"; abstract contract Staking20Upgradeable is ReentrancyGuardUpgradeable, IStaking20 { /*/////////////////////////////////////////////////////////////// State variables / Mappings //////////////////////////////////////////////////////////////*/ /// @dev The address of the native token wrapper contract. address internal immutable nativeTokenWrapper; ///@dev Address of ERC20 contract -- staked tokens belong to this contract. address public stakingToken; /// @dev Decimals of staking token. uint16 public stakingTokenDecimals; /// @dev Decimals of reward token. uint16 public rewardTokenDecimals; ///@dev Next staking condition Id. Tracks number of conditon updates so far. uint64 private nextConditionId; /// @dev Total amount of tokens staked in the contract. uint256 public stakingTokenBalance; /// @dev List of accounts that have staked that token-id. address[] public stakersArray; ///@dev Mapping staker address to Staker struct. See {struct IStaking20.Staker}. mapping(address => Staker) public stakers; ///@dev Mapping from condition Id to staking condition. See {struct IStaking721.StakingCondition} mapping(uint256 => StakingCondition) private stakingConditions; constructor(address _nativeTokenWrapper) { require(_nativeTokenWrapper != address(0), "address 0"); nativeTokenWrapper = _nativeTokenWrapper; } function __Staking20_init( address _stakingToken, uint16 _stakingTokenDecimals, uint16 _rewardTokenDecimals ) internal onlyInitializing { __ReentrancyGuard_init(); require(address(_stakingToken) != address(0), "token address 0"); require(_stakingTokenDecimals != 0 && _rewardTokenDecimals != 0, "decimals 0"); stakingToken = _stakingToken; stakingTokenDecimals = _stakingTokenDecimals; rewardTokenDecimals = _rewardTokenDecimals; } /*/////////////////////////////////////////////////////////////// External/Public Functions //////////////////////////////////////////////////////////////*/ /** * @notice Stake ERC20 Tokens. * * @dev See {_stake}. Override that to implement custom logic. * * @param _amount Amount to stake. */ function stake(uint256 _amount) external payable nonReentrant { _stake(_amount); } /** * @notice Withdraw staked ERC20 tokens. * * @dev See {_withdraw}. Override that to implement custom logic. * * @param _amount Amount to withdraw. */ function withdraw(uint256 _amount) external nonReentrant { _withdraw(_amount); } /** * @notice Claim accumulated rewards. * * @dev See {_claimRewards}. Override that to implement custom logic. * See {_calculateRewards} for reward-calculation logic. */ function claimRewards() external nonReentrant { _claimRewards(); } /** * @notice Set time unit. Set as a number of seconds. * Could be specified as -- x * 1 hours, x * 1 days, etc. * * @dev Only admin/authorized-account can call it. * * @param _timeUnit New time unit. */ function setTimeUnit(uint80 _timeUnit) external virtual { if (!_canSetStakeConditions()) { revert("Not authorized"); } StakingCondition memory condition = stakingConditions[nextConditionId - 1]; require(_timeUnit != condition.timeUnit, "Time-unit unchanged."); _setStakingCondition(_timeUnit, condition.rewardRatioNumerator, condition.rewardRatioDenominator); emit UpdatedTimeUnit(condition.timeUnit, _timeUnit); } /** * @notice Set rewards per unit of time. * Interpreted as (numerator/denominator) rewards per second/per day/etc based on time-unit. * * For e.g., ratio of 1/20 would mean 1 reward token for every 20 tokens staked. * * @dev Only admin/authorized-account can call it. * * @param _numerator Reward ratio numerator. * @param _denominator Reward ratio denominator. */ function setRewardRatio(uint256 _numerator, uint256 _denominator) external virtual { if (!_canSetStakeConditions()) { revert("Not authorized"); } StakingCondition memory condition = stakingConditions[nextConditionId - 1]; require( _numerator != condition.rewardRatioNumerator || _denominator != condition.rewardRatioDenominator, "Reward ratio unchanged." ); _setStakingCondition(condition.timeUnit, _numerator, _denominator); emit UpdatedRewardRatio( condition.rewardRatioNumerator, _numerator, condition.rewardRatioDenominator, _denominator ); } /** * @notice View amount staked and rewards for a user. * * @param _staker Address for which to calculated rewards. * @return _tokensStaked Amount of tokens staked. * @return _rewards Available reward amount. */ function getStakeInfo(address _staker) external view virtual returns (uint256 _tokensStaked, uint256 _rewards) { _tokensStaked = stakers[_staker].amountStaked; _rewards = _availableRewards(_staker); } function getTimeUnit() public view returns (uint80 _timeUnit) { _timeUnit = stakingConditions[nextConditionId - 1].timeUnit; } function getRewardRatio() public view returns (uint256 _numerator, uint256 _denominator) { _numerator = stakingConditions[nextConditionId - 1].rewardRatioNumerator; _denominator = stakingConditions[nextConditionId - 1].rewardRatioDenominator; } /*/////////////////////////////////////////////////////////////// Internal Functions //////////////////////////////////////////////////////////////*/ /// @dev Staking logic. Override to add custom logic. function _stake(uint256 _amount) internal virtual { require(_amount != 0, "Staking 0 tokens"); address _stakingToken; if (stakingToken == CurrencyTransferLib.NATIVE_TOKEN) { _stakingToken = nativeTokenWrapper; } else { require(msg.value == 0, "Value not 0"); _stakingToken = stakingToken; } if (stakers[_stakeMsgSender()].amountStaked > 0) { _updateUnclaimedRewardsForStaker(_stakeMsgSender()); } else { stakersArray.push(_stakeMsgSender()); stakers[_stakeMsgSender()].timeOfLastUpdate = uint80(block.timestamp); stakers[_stakeMsgSender()].conditionIdOflastUpdate = nextConditionId - 1; } uint256 balanceBefore = IERC20(_stakingToken).balanceOf(address(this)); CurrencyTransferLib.transferCurrencyWithWrapper( stakingToken, _stakeMsgSender(), address(this), _amount, nativeTokenWrapper ); uint256 actualAmount = IERC20(_stakingToken).balanceOf(address(this)) - balanceBefore; stakers[_stakeMsgSender()].amountStaked += actualAmount; stakingTokenBalance += actualAmount; emit TokensStaked(_stakeMsgSender(), actualAmount); } /// @dev Withdraw logic. Override to add custom logic. function _withdraw(uint256 _amount) internal virtual { uint256 _amountStaked = stakers[_stakeMsgSender()].amountStaked; require(_amount != 0, "Withdrawing 0 tokens"); require(_amountStaked >= _amount, "Withdrawing more than staked"); _updateUnclaimedRewardsForStaker(_stakeMsgSender()); if (_amountStaked == _amount) { address[] memory _stakersArray = stakersArray; for (uint256 i = 0; i < _stakersArray.length; ++i) { if (_stakersArray[i] == _stakeMsgSender()) { stakersArray[i] = _stakersArray[_stakersArray.length - 1]; stakersArray.pop(); break; } } } stakers[_stakeMsgSender()].amountStaked -= _amount; stakingTokenBalance -= _amount; CurrencyTransferLib.transferCurrencyWithWrapper( stakingToken, address(this), _stakeMsgSender(), _amount, nativeTokenWrapper ); emit TokensWithdrawn(_stakeMsgSender(), _amount); } /// @dev Logic for claiming rewards. Override to add custom logic. function _claimRewards() internal virtual { uint256 rewards = stakers[_stakeMsgSender()].unclaimedRewards + _calculateRewards(_stakeMsgSender()); require(rewards != 0, "No rewards"); stakers[_stakeMsgSender()].timeOfLastUpdate = uint80(block.timestamp); stakers[_stakeMsgSender()].unclaimedRewards = 0; stakers[_stakeMsgSender()].conditionIdOflastUpdate = nextConditionId - 1; _mintRewards(_stakeMsgSender(), rewards); emit RewardsClaimed(_stakeMsgSender(), rewards); } /// @dev View available rewards for a user. function _availableRewards(address _staker) internal view virtual returns (uint256 _rewards) { if (stakers[_staker].amountStaked == 0) { _rewards = stakers[_staker].unclaimedRewards; } else { _rewards = stakers[_staker].unclaimedRewards + _calculateRewards(_staker); } } /// @dev Update unclaimed rewards for a users. Called for every state change for a user. function _updateUnclaimedRewardsForStaker(address _staker) internal virtual { uint256 rewards = _calculateRewards(_staker); stakers[_staker].unclaimedRewards += rewards; stakers[_staker].timeOfLastUpdate = uint80(block.timestamp); stakers[_staker].conditionIdOflastUpdate = nextConditionId - 1; } /// @dev Set staking conditions. function _setStakingCondition(uint80 _timeUnit, uint256 _numerator, uint256 _denominator) internal virtual { require(_denominator != 0, "divide by 0"); require(_timeUnit != 0, "time-unit can't be 0"); uint256 conditionId = nextConditionId; nextConditionId += 1; stakingConditions[conditionId] = StakingCondition({ timeUnit: _timeUnit, rewardRatioNumerator: _numerator, rewardRatioDenominator: _denominator, startTimestamp: uint80(block.timestamp), endTimestamp: 0 }); if (conditionId > 0) { stakingConditions[conditionId - 1].endTimestamp = uint80(block.timestamp); } } /// @dev Calculate rewards for a staker. function _calculateRewards(address _staker) internal view virtual returns (uint256 _rewards) { Staker memory staker = stakers[_staker]; uint256 _stakerConditionId = staker.conditionIdOflastUpdate; uint256 _nextConditionId = nextConditionId; for (uint256 i = _stakerConditionId; i < _nextConditionId; i += 1) { StakingCondition memory condition = stakingConditions[i]; uint256 startTime = i != _stakerConditionId ? condition.startTimestamp : staker.timeOfLastUpdate; uint256 endTime = condition.endTimestamp != 0 ? condition.endTimestamp : block.timestamp; (bool noOverflowProduct, uint256 rewardsProduct) = SafeMath.tryMul( (endTime - startTime) * staker.amountStaked, condition.rewardRatioNumerator ); (bool noOverflowSum, uint256 rewardsSum) = SafeMath.tryAdd( _rewards, (rewardsProduct / condition.timeUnit) / condition.rewardRatioDenominator ); _rewards = noOverflowProduct && noOverflowSum ? rewardsSum : _rewards; } (, _rewards) = SafeMath.tryMul(_rewards, 10 ** rewardTokenDecimals); _rewards /= (10 ** stakingTokenDecimals); } /*//////////////////////////////////////////////////////////////////// Optional hooks that can be implemented in the derived contract ///////////////////////////////////////////////////////////////////*/ /// @dev Exposes the ability to override the msg sender -- support ERC2771. function _stakeMsgSender() internal virtual returns (address) { return msg.sender; } /*/////////////////////////////////////////////////////////////// Virtual functions to be implemented in derived contract //////////////////////////////////////////////////////////////*/ /** * @notice View total rewards available in the staking contract. * */ function getRewardTokenBalance() external view virtual returns (uint256 _rewardsAvailableInContract); /** * @dev Mint/Transfer ERC20 rewards to the staker. Must override. * * @param _staker Address for which to calculated rewards. * @param _rewards Amount of tokens to be given out as reward. * * For example, override as below to mint ERC20 rewards: * * ``` * function _mintRewards(address _staker, uint256 _rewards) internal override { * * TokenERC20(rewardTokenAddress).mintTo(_staker, _rewards); * * } * ``` */ function _mintRewards(address _staker, uint256 _rewards) internal virtual; /** * @dev Returns whether staking restrictions can be set in given execution context. * Must override. * * * For example, override as below to restrict access to admin: * * ``` * function _canSetStakeConditions() internal override { * * return msg.sender == adminAddress; * * } * ``` */ function _canSetStakeConditions() internal view virtual returns (bool); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb /** * Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI * for you contract. * * Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea. */ interface IContractMetadata { /// @dev Returns the metadata URI of the contract. function contractURI() external view returns (string memory); /** * @dev Sets contract URI for the storefront-level metadata of the contract. * Only module admin can call this function. */ function setContractURI(string calldata _uri) external; /// @dev Emitted when the contract URI is updated. event ContractURIUpdated(string prevURI, string newURI); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author thirdweb /** * @dev Provides a function to batch together multiple calls in a single external call. * * _Available since v4.1._ */ interface IMulticall { /** * @dev Receives and executes a batch of function calls on this contract. */ function multicall(bytes[] calldata data) external returns (bytes[] memory results); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IPermissions { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb import "./IPermissions.sol"; /** * @dev External interface of AccessControlEnumerable declared to support ERC165 detection. */ interface IPermissionsEnumerable is IPermissions { /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * [forum post](https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296) * for more information. */ function getRoleMember(bytes32 role, uint256 index) external view returns (address); /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) external view returns (uint256); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.11; /// @author thirdweb interface IStaking20 { /// @dev Emitted when tokens are staked. event TokensStaked(address indexed staker, uint256 amount); /// @dev Emitted when a tokens are withdrawn. event TokensWithdrawn(address indexed staker, uint256 amount); /// @dev Emitted when a staker claims staking rewards. event RewardsClaimed(address indexed staker, uint256 rewardAmount); /// @dev Emitted when contract admin updates timeUnit. event UpdatedTimeUnit(uint256 oldTimeUnit, uint256 newTimeUnit); /// @dev Emitted when contract admin updates rewardsPerUnitTime. event UpdatedRewardRatio( uint256 oldNumerator, uint256 newNumerator, uint256 oldDenominator, uint256 newDenominator ); /// @dev Emitted when contract admin updates minimum staking amount. event UpdatedMinStakeAmount(uint256 oldAmount, uint256 newAmount); /** * @notice Staker Info. * * @param amountStaked Total number of tokens staked by the staker. * * @param timeOfLastUpdate Last reward-update timestamp. * * @param unclaimedRewards Rewards accumulated but not claimed by user yet. * * @param conditionIdOflastUpdate Condition-Id when rewards were last updated for user. */ struct Staker { uint128 timeOfLastUpdate; uint64 conditionIdOflastUpdate; uint256 amountStaked; uint256 unclaimedRewards; } /** * @notice Staking Condition. * * @param timeUnit Unit of time specified in number of seconds. Can be set as 1 seconds, 1 days, 1 hours, etc. * * @param rewardRatioNumerator Rewards ratio is the number of reward tokens for a number of staked tokens, * per unit of time. * * @param rewardRatioDenominator Rewards ratio is the number of reward tokens for a number of staked tokens, * per unit of time. * * @param startTimestamp Condition start timestamp. * * @param endTimestamp Condition end timestamp. */ struct StakingCondition { uint80 timeUnit; uint80 startTimestamp; uint80 endTimestamp; uint256 rewardRatioNumerator; uint256 rewardRatioDenominator; } /** * @notice Stake ERC721 Tokens. * * @param amount Amount to stake. */ function stake(uint256 amount) external payable; /** * @notice Withdraw staked tokens. * * @param amount Amount to withdraw. */ function withdraw(uint256 amount) external; /** * @notice Claim accumulated rewards. * */ function claimRewards() external; /** * @notice View amount staked and total rewards for a user. * * @param staker Address for which to calculated rewards. */ function getStakeInfo(address staker) external view returns (uint256 _tokensStaked, uint256 _rewards); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (metatx/ERC2771Context.sol) pragma solidity ^0.8.11; import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; /** * @dev Context variant with ERC2771 support. */ abstract contract ERC2771ContextUpgradeable is Initializable, ContextUpgradeable { mapping(address => bool) private _trustedForwarder; function __ERC2771Context_init(address[] memory trustedForwarder) internal onlyInitializing { __Context_init_unchained(); __ERC2771Context_init_unchained(trustedForwarder); } function __ERC2771Context_init_unchained(address[] memory trustedForwarder) internal onlyInitializing { for (uint256 i = 0; i < trustedForwarder.length; i++) { _trustedForwarder[trustedForwarder[i]] = true; } } function isTrustedForwarder(address forwarder) public view virtual returns (bool) { return _trustedForwarder[forwarder]; } function _msgSender() internal view virtual override returns (address sender) { if (isTrustedForwarder(msg.sender)) { // The assembly code is more direct than the Solidity version using `abi.decode`. assembly { sender := shr(96, calldataload(sub(calldatasize(), 20))) } } else { return super._msgSender(); } } function _msgData() internal view virtual override returns (bytes calldata) { if (isTrustedForwarder(msg.sender)) { return msg.data[:msg.data.length - 20]; } else { return super._msgData(); } } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../../../../../eip/interface/IERC20.sol"; import { Address } from "@openzeppelin/contracts/utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; interface IWETH { function deposit() external payable; function withdraw(uint256 amount) external; function transfer(address to, uint256 value) external returns (bool); }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.1; /// @author thirdweb, OpenZeppelin Contracts (v4.9.0) /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{ value: value }(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb // Helper interfaces import { IWETH } from "../infra/interface/IWETH.sol"; import { SafeERC20, IERC20 } from "../external-deps/openzeppelin/token/ERC20/utils/SafeERC20.sol"; library CurrencyTransferLib { using SafeERC20 for IERC20; /// @dev The address interpreted as native token of the chain. address public constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; /// @dev Transfers a given amount of currency. function transferCurrency(address _currency, address _from, address _to, uint256 _amount) internal { if (_amount == 0) { return; } if (_currency == NATIVE_TOKEN) { safeTransferNativeToken(_to, _amount); } else { safeTransferERC20(_currency, _from, _to, _amount); } } /// @dev Transfers a given amount of currency. (With native token wrapping) function transferCurrencyWithWrapper( address _currency, address _from, address _to, uint256 _amount, address _nativeTokenWrapper ) internal { if (_amount == 0) { return; } if (_currency == NATIVE_TOKEN) { if (_from == address(this)) { // withdraw from weth then transfer withdrawn native token to recipient IWETH(_nativeTokenWrapper).withdraw(_amount); safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper); } else if (_to == address(this)) { // store native currency in weth require(_amount == msg.value, "msg.value != amount"); IWETH(_nativeTokenWrapper).deposit{ value: _amount }(); } else { safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper); } } else { safeTransferERC20(_currency, _from, _to, _amount); } } /// @dev Transfer `amount` of ERC20 token from `from` to `to`. function safeTransferERC20(address _currency, address _from, address _to, uint256 _amount) internal { if (_from == _to) { return; } if (_from == address(this)) { IERC20(_currency).safeTransfer(_to, _amount); } else { IERC20(_currency).safeTransferFrom(_from, _to, _amount); } } /// @dev Transfers `amount` of native token to `to`. function safeTransferNativeToken(address to, uint256 value) internal { // solhint-disable avoid-low-level-calls // slither-disable-next-line low-level-calls (bool success, ) = to.call{ value: value }(""); require(success, "native token transfer failed"); } /// @dev Transfers `amount` of native token to `to`. (With native token wrapping) function safeTransferNativeTokenWithWrapper(address to, uint256 value, address _nativeTokenWrapper) internal { // solhint-disable avoid-low-level-calls // slither-disable-next-line low-level-calls (bool success, ) = to.call{ value: value }(""); if (!success) { IWETH(_nativeTokenWrapper).deposit{ value: value }(); IERC20(_nativeTokenWrapper).safeTransfer(to, value); } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.0; /// @author thirdweb /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /// @dev Returns the hexadecimal representation of `value`. /// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte, /// and the alphabets are capitalized conditionally according to /// https://eips.ethereum.org/EIPS/eip-55 function toHexStringChecksummed(address value) internal pure returns (string memory str) { str = toHexString(value); /// @solidity memory-safe-assembly assembly { let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...` let o := add(str, 0x22) let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... ` let t := shl(240, 136) // `0b10001000 << 240` for { let i := 0 } 1 { } { mstore(add(i, i), mul(t, byte(i, hashed))) i := add(i, 1) if eq(i, 20) { break } } mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask))))) o := add(o, 0x20) mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask))))) } } /// @dev Returns the hexadecimal representation of `value`. /// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte. function toHexString(address value) internal pure returns (string memory str) { str = toHexStringNoPrefix(value); /// @solidity memory-safe-assembly assembly { let strLength := add(mload(str), 2) // Compute the length. mstore(str, 0x3078) // Write the "0x" prefix. str := sub(str, 2) // Move the pointer. mstore(str, strLength) // Write the length. } } /// @dev Returns the hexadecimal representation of `value`. /// The output is encoded using 2 hexadecimal digits per byte. function toHexStringNoPrefix(address value) internal pure returns (string memory str) { /// @solidity memory-safe-assembly assembly { str := mload(0x40) // Allocate the memory. // We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length, // 0x02 bytes for the prefix, and 0x28 bytes for the digits. // The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80. mstore(0x40, add(str, 0x80)) // Store "0123456789abcdef" in scratch space. mstore(0x0f, 0x30313233343536373839616263646566) str := add(str, 2) mstore(str, 40) let o := add(str, 0x20) mstore(add(o, 40), 0) value := shl(96, value) // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. for { let i := 0 } 1 { } { let p := add(o, add(i, i)) let temp := byte(i, value) mstore8(add(p, 1), mload(and(temp, 15))) mstore8(p, mload(shr(4, temp))) i := add(i, 1) if eq(i, 20) { break } } } } /// @dev Returns the hex encoded string from the raw bytes. /// The output is encoded using 2 hexadecimal digits per byte. function toHexString(bytes memory raw) internal pure returns (string memory str) { str = toHexStringNoPrefix(raw); /// @solidity memory-safe-assembly assembly { let strLength := add(mload(str), 2) // Compute the length. mstore(str, 0x3078) // Write the "0x" prefix. str := sub(str, 2) // Move the pointer. mstore(str, strLength) // Write the length. } } /// @dev Returns the hex encoded string from the raw bytes. /// The output is encoded using 2 hexadecimal digits per byte. function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) { /// @solidity memory-safe-assembly assembly { let length := mload(raw) str := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix. mstore(str, add(length, length)) // Store the length of the output. // Store "0123456789abcdef" in scratch space. mstore(0x0f, 0x30313233343536373839616263646566) let o := add(str, 0x20) let end := add(raw, length) for { } iszero(eq(raw, end)) { } { raw := add(raw, 1) mstore8(add(o, 1), mload(and(mload(raw), 15))) mstore8(o, mload(and(shr(4, mload(raw)), 15))) o := add(o, 2) } mstore(o, 0) // Zeroize the slot after the string. mstore(0x40, add(o, 0x20)) // Allocate the memory. } } }
// SPDX-License-Identifier: Apache-2.0 pragma solidity ^0.8.11; /** * Thirdweb's TokenStake smart contract allows users to stake their ERC-20 Tokens * and earn rewards in form of a different ERC-20 token. * * note: * - Reward token and staking token can't be changed after deployment. * Reward token contract can't be same as the staking token contract. * * - ERC20 tokens from only the specified contract can be staked. * * - All token transfers require approval on their respective token-contracts. * * - Admin must deposit reward tokens using the `depositRewardTokens` function only. * Any direct transfers may cause unintended consequences, such as locking of tokens. * * - Users must stake tokens using the `stake` function only. * Any direct transfers may cause unintended consequences, such as locking of tokens. */ interface ITokenStake { /// @dev Emitted when contract admin withdraws reward tokens. event RewardTokensWithdrawnByAdmin(uint256 _amount); /// @dev Emitted when contract admin deposits reward tokens. event RewardTokensDepositedByAdmin(uint256 _amount); /** * @notice Lets a contract admin (account with `DEFAULT_ADMIN_ROLE`) deposit reward-tokens. * * note: Tokens should be approved on the reward-token contract before depositing. * * @param _amount Amount of tokens to deposit. */ function depositRewardTokens(uint256 _amount) external payable; /** * @notice Lets a contract admin (account with `DEFAULT_ADMIN_ROLE`) withdraw reward-tokens. * Useful for removing excess balance, thus preventing locking of tokens. * * @param _amount Amount of tokens to deposit. */ function withdrawRewardTokens(uint256 _amount) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized != type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 amount) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
{ "optimizer": { "enabled": true, "runs": 20 }, "evmVersion": "london", "remappings": [ ":@chainlink/=lib/chainlink/", ":@ds-test/=lib/ds-test/src/", ":@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/", ":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/", ":@std/=lib/forge-std/src/", ":@thirdweb-dev/dynamic-contracts/=lib/dynamic-contracts/", ":ERC721A-Upgradeable/=lib/ERC721A-Upgradeable/contracts/", ":ERC721A/=lib/ERC721A/contracts/", ":chainlink/=lib/chainlink/contracts/", ":contracts/=contracts/", ":ds-test/=lib/ds-test/src/", ":dynamic-contracts/=lib/dynamic-contracts/src/", ":erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/", ":erc721a-upgradeable/=lib/ERC721A-Upgradeable/", ":erc721a/=lib/ERC721A/", ":forge-std/=lib/forge-std/src/", ":lib/sstore2/=lib/dynamic-contracts/lib/sstore2/", ":openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/", ":openzeppelin-contracts/=lib/openzeppelin-contracts/", ":openzeppelin/=lib/openzeppelin-contracts-upgradeable/contracts/", ":sstore2/=lib/dynamic-contracts/lib/sstore2/contracts/" ], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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"type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"count","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_staker","type":"address"}],"name":"getStakeInfo","outputs":[{"internalType":"uint256","name":"_tokensStaked","type":"uint256"},{"internalType":"uint256","name":"_rewards","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTimeUnit","outputs":[{"internalType":"uint80","name":"_timeUnit","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRoleWithSwitch","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_defaultAdmin","type":"address"},{"internalType":"string","name":"_contractURI","type":"string"},{"internalType":"address[]","name":"_trustedForwarders","type":"address[]"},{"internalType":"address","name":"_rewardToken","type":"address"},{"internalType":"address","name":"_stakingToken","type":"address"},{"internalType":"uint80","name":"_timeUnit","type":"uint80"},{"internalType":"uint256","name":"_rewardRatioNumerator","type":"uint256"},{"internalType":"uint256","name":"_rewardRatioDenominator","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"forwarder","type":"address"}],"name":"isTrustedForwarder","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardTokenDecimals","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_uri","type":"string"}],"name":"setContractURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_numerator","type":"uint256"},{"internalType":"uint256","name":"_denominator","type":"uint256"}],"name":"setRewardRatio","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint80","name":"_timeUnit","type":"uint80"}],"name":"setTimeUnit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"stakers","outputs":[{"internalType":"uint128","name":"timeOfLastUpdate","type":"uint128"},{"internalType":"uint64","name":"conditionIdOflastUpdate","type":"uint64"},{"internalType":"uint256","name":"amountStaked","type":"uint256"},{"internalType":"uint256","name":"unclaimedRewards","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakersArray","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingTokenBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingTokenDecimals","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawRewardTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.