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Contract Overview
Balance:
0 MATIC
MATIC Value:
$0.00
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Contract Name:
Controller
Compiler Version
v0.8.15+commit.e14f2714
Optimization Enabled:
Yes with 300 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface AggregatorV3Interface { function decimals() external view returns (uint8); function description() external view returns (string memory); function version() external view returns (uint256); // getRoundData and latestRoundData should both raise "No data present" // if they do not have data to report, instead of returning unset values // which could be misinterpreted as actual reported values. function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @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. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @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 revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControlEnumerable.sol"; import "./AccessControl.sol"; import "../utils/structs/EnumerableSet.sol"; /** * @dev Extension of {AccessControl} that allows enumerating the members of each role. */ abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl { using EnumerableSet for EnumerableSet.AddressSet; mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @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 * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) { return _roleMembers[role].at(index); } /** * @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) public view virtual override returns (uint256) { return _roleMembers[role].length(); } /** * @dev Overload {_grantRole} to track enumerable memberships */ function _grantRole(bytes32 role, address account) internal virtual override { super._grantRole(role, account); _roleMembers[role].add(account); } /** * @dev Overload {_revokeRole} to track enumerable memberships */ function _revokeRole(bytes32 role, address account) internal virtual override { super._revokeRole(role, account); _roleMembers[role].remove(account); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @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: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; /** * @dev External interface of AccessControlEnumerable declared to support ERC165 detection. */ interface IAccessControlEnumerable is IAccessControl { /** * @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 * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * 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: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // 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; constructor() { _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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC1155 compliant contract, as defined in the * https://eips.ethereum.org/EIPS/eip-1155[EIP]. * * _Available since v3.1._ */ interface IERC1155 is IERC165 { /** * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`. */ event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); /** * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all * transfers. */ event TransferBatch( address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values ); /** * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to * `approved`. */ event ApprovalForAll(address indexed account, address indexed operator, bool approved); /** * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. * * If an {URI} event was emitted for `id`, the standard * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value * returned by {IERC1155MetadataURI-uri}. */ event URI(string value, uint256 indexed id); /** * @dev Returns the amount of tokens of token type `id` owned by `account`. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) external view returns (uint256); /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory); /** * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the caller. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns true if `operator` is approved to transfer ``account``'s tokens. * * See {setApprovalForAll}. */ function isApprovedForAll(address account, address operator) external view returns (bool); /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}. * - `from` must have a balance of tokens of type `id` of at least `amount`. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes calldata data ) external; /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV // Deprecated in v4.8 } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @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] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.15; import "@openzeppelin/contracts/access/AccessControlEnumerable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import ".././interfaces/HTokenI.sol"; import "../utils/ErrorReporter.sol"; import "../interfaces/PermissionlessOracleI.sol"; import "../interfaces/ControllerI.sol"; import "../controller/ControllerStorage.sol"; /** * @title Honey Protocol Controller * @notice Controller can be interpreted as the brain of the Honey Protocol, is the one who decides: * - who can borrow and how much it can borrow * - who can redeem and how much it can redeem * - who can transfer their hTokens * - enables different markets to be traded * @author Honey Labs Inc. * @custom:coauthor m4rio * @custom:contributor BowTiedPickle */ contract Controller is ControllerStorage, ControllerI, AccessControlEnumerable, ReentrancyGuard, Pausable { // ---------- Imports ---------- using EnumerableSet for EnumerableSet.AddressSet; using ECDSA for bytes32; // ---------- Role Constants ---------- bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE"); bytes32 public constant FACTORY_ROLE = keccak256("FACTORY_ROLE"); // ---------- Versioning ---------- /// @notice this corresponds to 1.0.0 uint256 public constant version = 1_000_000; // ---------- Parameters ---------- /// @notice No collateralFactorMantissa may exceed this value uint256 internal constant collateralFactorMaxMantissa = 0.9e18; // 90% /// @notice The borrow fee or referred borrow fee can not exceed this value uint256 public constant borrowFeeCap = 0.02 ether; // 2% constructor() { _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); _setupRole(PAUSER_ROLE, msg.sender); } // ---------- Public Function ---------- /** * @notice Add assets to be included in account liquidity calculation * @param _hTokens The list of addresses of the hToken markets to be enabled */ function enterMarkets(HTokenI[] calldata _hTokens) external override whenNotPaused nonReentrant { uint256 len = _hTokens.length; for (uint256 i; i < len; ) { HTokenI hToken = _hTokens[i]; addToMarketInternal(hToken, msg.sender); unchecked { ++i; } } } /** * @notice Removes asset from sender's account liquidity calculation * @dev Sender must not have an outstanding borrow balance in the asset, * or be providing necessary collateral for an outstanding borrow. * @param _hToken The address of the asset to be removed */ function exitMarket(HTokenI _hToken) external override whenNotPaused nonReentrant { // Get sender tokensHeld and amountOwed underlying from the hToken (uint256 tokensHeld, uint256 amountOwed, ) = _hToken.getAccountSnapshot(msg.sender); // Fail if the sender has HToken balance, meaning he has underlying deposited if (tokensHeld != 0) { revert ControllerError(Error.NONZERO_UNDERLYING_BALANCE); } // Fail if the sender has a borrow balance if (amountOwed != 0) { revert ControllerError(Error.NONZERO_BORROW_BALANCE); } Market storage marketToExit = _markets[_hToken]; // Return true if the sender is not already in the market if (!marketToExit.accountMembership[msg.sender]) { return; } // Set hToken account membership to false delete marketToExit.accountMembership[msg.sender]; emit MarketExited(_hToken, msg.sender); } /** * @notice Checks if the account should be allowed to deposit underlying in the market * @param _hToken The market to verify the redeem against * @param _depositor The account that wants to deposit * @param _amount The number of underlying it wants to deposit */ function depositUnderlyingAllowed( HTokenI _hToken, address _depositor, uint256 _amount ) external override whenNotPaused { _depositor; _amount; // Pausing is a very serious situation - we revert to sound the alarms if (marketPausedInfo[_hToken].depositPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); Market storage market = _markets[_hToken]; if (!market.accountMembership[_depositor]) { // only hTokens may call depositUnderlyingAllowed if depositor not in market if (msg.sender != address(_hToken)) revert Unauthorized(); // attempt to add depositor to the market addToMarketInternal(_hToken, _depositor); // it should be impossible to break the important invariant assert(market.accountMembership[_depositor]); } } /** * @notice Checks if the account should be allowed to borrow the underlying asset of the given market * @param _hToken The market to verify the borrow against * @param _borrower The account which would borrow the asset * @param _collateralId collateral Id, aka the NFT token Id * @param _borrowAmount The amount of underlying the account would borrow */ function borrowAllowed( HTokenI _hToken, address _borrower, uint256 _collateralId, uint256 _borrowAmount ) external override whenNotPaused nonReentrant { // Pausing is a very serious situation - we revert to sound the alarms if (marketPausedInfo[_hToken].borrowPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); Market storage market = _markets[_hToken]; if (!market.accountMembership[_borrower]) { // only hTokens may call borrowAllowed if borrower not in market if (msg.sender != address(_hToken)) revert Unauthorized(); // attempt to add borrower to the market addToMarketInternal(_hToken, _borrower); // it should be impossible to break the important invariant assert(market.accountMembership[_borrower]); } uint256 borrowCap = borrowCaps[_hToken]; // Borrow cap of 0 corresponds to unlimited borrowing if (borrowCap != 0) { uint256 nextTotalBorrows = HTokenI(_hToken).totalBorrows() + _borrowAmount; if (nextTotalBorrows >= borrowCap) revert MarketError(Error.MARKET_CAP_BORROW_REACHED); } (, uint256 shortfall, ) = getHypotheticalAccountLiquidityBorrowInternal(_hToken, _collateralId, _borrowAmount); if (shortfall > 0) { revert ControllerError(Error.INSUFFICIENT_LIQUIDITY); } } /** * @notice Checks if the collateral is at risk of being liquidated * @param _hToken The market to verify the liquidation * @param _collateralId The Collateral Id, aka the NFT token Id */ function liquidationAllowed(HTokenI _hToken, uint256 _collateralId) external view override whenNotPaused { // Pausing is a very serious situation - we revert to sound the alarms if (marketPausedInfo[_hToken].liquidationPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); (, uint256 shortfall, ) = getHypotheticalAccountLiquidityBorrowInternal(_hToken, _collateralId, 0); if (shortfall == 0) revert ControllerError(Error.LIQUIDATION_NOT_ALLOWED); } /** * @notice Checks if the account should be allowed to redeem tokens in the given market * @param _hToken The market to verify the redeem against * @param _redeemer The account which would redeem the tokens * @param _redeemTokens The number of hTokens to exchange for the underlying asset in the market */ function redeemAllowed( HTokenI _hToken, address _redeemer, uint256 _redeemTokens ) public view override whenNotPaused { _redeemTokens; if (marketPausedInfo[_hToken].redeemPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); Market storage market = _markets[_hToken]; // If the redeemer is not 'in' the market we revert as no one should redeem if not entered if (!market.accountMembership[_redeemer]) { revert ControllerError(Error.NOT_FOUND); } //Otherwise, perform a hypothetical liquidity check to guard against shortfall, we don't do this YET (, uint256 shortfall) = getHypotheticalAccountLiquidityRedeemInternal(_hToken, _redeemer, _redeemTokens); if (shortfall > 0) { revert ControllerError(Error.INSUFFICIENT_LIQUIDITY); } } /** * @notice Checks if the account should be allowed to deposit a collateral * @param _hToken The market to verify the deposit of the collateral * @param _depositor The account which deposits the collateral * @param _collateralId The collateral token id */ function depositCollateralAllowed( HTokenI _hToken, address _depositor, uint256 _collateralId ) external override whenNotPaused { _depositor; _collateralId; if (marketPausedInfo[_hToken].depositCollateralPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); Market storage market = _markets[_hToken]; if (!market.accountMembership[_depositor]) { // only hTokens may call borrowAllowed if borrower not in market if (msg.sender != address(_hToken)) revert Unauthorized(); // attempt to add borrower to the market addToMarketInternal(_hToken, _depositor); // it should be impossible to break the important invariant assert(market.accountMembership[_depositor]); } } // ---------- Internal Functions ---------- /** * @notice Add the market a user's "assets in" for liquidity/withdraw calculations * @param _hToken The market to enter * @param _account The address of the account to modify */ function addToMarketInternal(HTokenI _hToken, address _account) internal { Market storage marketToJoin = _markets[_hToken]; if (!marketToJoin.isListed) { // market is not listed, cannot join revert MarketError(Error.MARKET_NOT_LISTED); } if (marketToJoin.accountMembership[_account]) { // already joined return; } marketToJoin.accountMembership[_account] = true; emit MarketEntered(_hToken, _account); } function getCollateralPriceInUnderlying(HTokenI _hToken) internal view returns (uint256) { PermissionlessOracleI cachedOracle = _oracles[_hToken]; uint8 decimals = _hToken.decimals(); (uint128 nftPriceInETH, uint128 lastUpdated) = cachedOracle.getFloorPrice( address(_hToken.collateralToken()), decimals ); if ( lastUpdated < block.timestamp && block.timestamp - lastUpdated > cachedOracle.updateThreshold(address(_hToken.collateralToken())) ) revert OracleNotUpdated(); uint256 underlyingPriceInUSD = uint256(cachedOracle.getUnderlyingPriceInUSD(_hToken.underlyingToken(), decimals)); uint256 ethPrice = uint256(cachedOracle.getEthPrice(decimals)); return (nftPriceInETH * ethPrice) / underlyingPriceInUSD; } /*** Views ***/ /** * @notice Determine what the account liquidity would be if the given amounts were redeemed/borrowed * @param _hToken The market to hypothetically redeem/borrow in * @param _account The account to determine liquidity for * @param _redeemTokens The number of tokens to hypothetically redeem * @param _borrowAmount The amount of underlying to hypothetically borrow * @param _collateralId The Collateral Id, aka the NFT token Id * @return liquidityTillLiquidation - hypothetical account liquidity in excess of collateral requirements * @return shortfall - hypothetical account shortfall below collateral requirements * @return liquidityTillLTV - Loan to value shortfall, this is the max a user can borrow */ function getHypotheticalAccountLiquidity( HTokenI _hToken, address _account, uint256 _collateralId, uint256 _redeemTokens, uint256 _borrowAmount ) external view override returns ( uint256 liquidityTillLiquidation, uint256 shortfall, uint256 liquidityTillLTV ) { if (_redeemTokens > 0) (liquidityTillLiquidation, shortfall) = getHypotheticalAccountLiquidityRedeemInternal( _hToken, _account, _redeemTokens ); else (liquidityTillLiquidation, shortfall, liquidityTillLTV) = getHypotheticalAccountLiquidityBorrowInternal( _hToken, _collateralId, _borrowAmount ); } /** * @notice Returns whether the given account is entered in the given asset * @param _hToken The hToken to check * @param _account The address of the account to check * @return True if the account is in the asset, otherwise false. */ function checkMembership(HTokenI _hToken, address _account) external view override returns (bool) { return _markets[_hToken].accountMembership[_account]; } /** * @notice Checks if the account should be allowed to transfer tokens in the given market * @param _hToken The market to verify the transfer against */ function transferAllowed(HTokenI _hToken) external view override whenNotPaused { // Pausing is a very serious situation - we revert to sound the alarms if (marketPausedInfo[_hToken].transferPaused) revert PausedAction(); Market storage market = _markets[_hToken]; if (!market.isListed) { revert MarketError(Error.MARKET_NOT_LISTED); } } /** * @notice Returns the borrow fee per market, accounts for referral * @param _hToken The market we want the borrow fee for * @param _referral Referral code for Referral program of Honey Labs * @param _signature Signed message provided by Honey Labs */ function getBorrowFeePerMarket( HTokenI _hToken, string calldata _referral, bytes calldata _signature ) external view returns (uint256, bool) { (address signed, ) = keccak256(abi.encodePacked(_referral)).toEthSignedMessageHash().tryRecover(_signature); if (_referralSigner == signed) { return (_referralBorrowFeePerMarket[_hToken], true); } return (_borrowFeePerMarket[_hToken], false); } /** * @notice Returns the borrow fee per market if provided a referral code, accounts for referral * @param _hToken The market we want the borrow fee for */ function getReferralBorrowFeePerMarket(HTokenI _hToken) external view returns (uint256) { return _referralBorrowFeePerMarket[_hToken]; } /** * @notice Checks if the account should be allowed to repay a borrow in the given market * @param _hToken The market to verify the repay against * @param _repayAmount The amount of the underlying asset the account would repay * @param _collateralId The Collateral Id, aka the NFT token Id */ function repayBorrowAllowed( HTokenI _hToken, uint256 _repayAmount, uint256 _collateralId ) external view override whenNotPaused { _repayAmount; _collateralId; if (marketPausedInfo[_hToken].repayBorrowPaused) revert PausedAction(); // This also checks if a market is listed as you can not set an oracle for an unlisted market if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); } /** * @notice Checks if withdrawal are allowed for this collateral id * @param _hToken The market to verify the withdrawal from * @param _collateralId The collateral Id we want to withdraw */ function withdrawCollateralAllowed(HTokenI _hToken, uint256 _collateralId) external view override whenNotPaused { if (!_markets[_hToken].isListed) { revert MarketError(Error.MARKET_NOT_LISTED); } if (_hToken.getDebtForCollateral(_collateralId) != 0) revert ControllerError(Error.WITHDRAW_NOT_ALLOWED); } /** * @notice Checks if a market exists and it's listed * @param _hToken The market we check to see if it exists * @return bool true or false */ function marketExists(HTokenI _hToken) external view override whenNotPaused returns (bool) { return _markets[_hToken].isListed; } /** * @notice Returns market data for a specific market * @param _hToken The market we want to retrieved Controller data * @return bool If the market is listed * @return uint256 MAX Factor Mantissa * @return uint256 Collateral Factor Mantissa */ function getMarketData(HTokenI _hToken) external view override returns ( bool, uint256, uint256 ) { Market storage market = _markets[_hToken]; return (market.isListed, market.LTVFactorMantissa, market.collateralFactorMantissa); } /** * @notice Checks if an underlying exists in the market * @param _underlying The underlying address to check if exists * @return bool true or false */ function underlyingExistsInMarkets(address _underlying) external view override returns (bool) { return registeredUnderlying.contains(_underlying); } /** * @notice Checks if a collateral exists in the market * @param _collateral The collateral to check if exists * @return bool true or false */ function collateralExistsInMarkets(address _collateral) external view override returns (bool) { return registeredCollateral.contains(_collateral); } /** * @notice Checks if a certain action is paused within a market * @param _hToken The market we want to check if an action is paused * @param _target The action we want to check if it's paused * @return bool true or false */ function isActionPaused(HTokenI _hToken, uint256 _target) external view override returns (bool) { if (!_markets[_hToken].isListed) revert MarketError(Error.MARKET_NOT_LISTED); if (_target == 0) { return marketPausedInfo[_hToken].borrowPaused; } else if (_target == 1) { return marketPausedInfo[_hToken].transferPaused; } else if (_target == 2) { return marketPausedInfo[_hToken].redeemPaused; } else if (_target == 3) { return marketPausedInfo[_hToken].liquidationPaused; } else if (_target == 4) { return marketPausedInfo[_hToken].repayBorrowPaused; } else if (_target == 5) { return marketPausedInfo[_hToken].depositPaused; } else if (_target == 6) { return marketPausedInfo[_hToken].depositCollateralPaused; } revert ControllerError(Error.INVALID_ACTION); } /** * @notice Determine what the account liquidity would be if the given amounts were redeemed * @param _hToken The market to hypothetically redeem/borrow in * @param _account The account to determine liquidity for * @param _redeemTokens The number of tokens to hypothetically redeem * @dev Note that we calculate the exchangeRateStored for each collateral hToken using stored data, * without calculating accumulated interest. Also not used for now * @return liquidity - hypothetical account liquidity in excess of collateral requirements * @return shortfall - hypothetical account shortfall below collateral requirements */ function getHypotheticalAccountLiquidityRedeemInternal( HTokenI _hToken, address _account, uint256 _redeemTokens ) internal view returns (uint256 liquidity, uint256 shortfall) { // Read the balances and exchange rate from the _hToken (uint256 hTokenBalance, , uint256 exchangeRateMantissa) = _hToken.getAccountSnapshot(_account); if (hTokenBalance < _redeemTokens) revert ControllerError(Error.BALANCE_INSUFFICIENT); uint256 toWithdraw = (_redeemTokens * exchangeRateMantissa) / 1e18; liquidity = _hToken.getCashPrior(); // If we don't have enough liquidity to cover redeem amount raise a shortfall if (toWithdraw > liquidity) { shortfall = toWithdraw - liquidity; } } /** * @notice Determine what the account liquidity would be if the given amounts were borrowed * @param _hToken The market to hypothetically redeem/borrow in * @param _collateralId The Collateral Id, aka the NFT token Id * @param _borrowAmount The amount of underlying to hypothetically borrow * @dev Note that we calculate the exchangeRateStored for each collateral hToken using stored data, * without calculating accumulated interest. * @return liquidityTillLiquidation - hypothetical account liquidity in excess of collateral requirements * @return shortfall - hypothetical account shortfall below collateral requirements * @return liquidityTillLTV - Loan to value shortfall */ function getHypotheticalAccountLiquidityBorrowInternal( HTokenI _hToken, uint256 _collateralId, uint256 _borrowAmount ) internal view returns ( uint256 liquidityTillLiquidation, uint256 shortfall, uint256 liquidityTillLTV ) { uint256 sumCollateral = getCollateralPriceInUnderlying(_hToken); uint256 availableUnderlying = _hToken.getCashPrior(); // Read the balances and exchange rate from the hToken uint256 borrowBalance = _hToken.getDebtForCollateral(_collateralId); if (sumCollateral == 0) { revert ControllerError(Error.PRICE_ERROR); } uint256 sumBorrowPlusEffects = borrowBalance + _borrowAmount; // If we don't have enough liquidity to cover borrow amount then revert if (_borrowAmount > availableUnderlying) revert ControllerError(Error.INSUFFICIENT_LIQUIDITY); // computing collateral factor applied on the collateral total amount // collateral factor % from the NFT price uint256 ltvValue = (_markets[_hToken].LTVFactorMantissa * sumCollateral) / 1e18; sumCollateral = (_markets[_hToken].collateralFactorMantissa * sumCollateral) / 1e18; unchecked { if (ltvValue > sumBorrowPlusEffects) { liquidityTillLiquidation = sumCollateral - sumBorrowPlusEffects; liquidityTillLTV = ltvValue - sumBorrowPlusEffects; } else if (sumCollateral > sumBorrowPlusEffects) { liquidityTillLiquidation = sumCollateral - sumBorrowPlusEffects; } else { shortfall = sumBorrowPlusEffects - sumCollateral; } } } /** * @notice Returns the oracle per market * @param _hToken The market to get the oracle for */ function oracle(HTokenI _hToken) external view override returns (PermissionlessOracleI) { return _oracles[_hToken]; } function referralSigner() external view returns (address) { return _referralSigner; } // ---------- Admin Functions ---------- /** * @notice Sets a new price oracle for an HToken * @param _hToken HToken to set the oracle for * @param _newOracle New oracle address */ function _setPriceOracle(HTokenI _hToken, PermissionlessOracleI _newOracle) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized(); Market storage market = _markets[_hToken]; if (!market.isListed) { revert MarketError(Error.MARKET_NOT_LISTED); } emit PriceOracleUpdated(_oracles[_hToken], _newOracle); _oracles[_hToken] = _newOracle; } /** * @notice Sets the maxLTVFactor and collateral factor for an HToken * @param _hToken Market to set the factors for * @param _newLTVFactorMantissa New max LTV factor in mantissa format * @param _newCollateralFactorMantissa New collateral factor in mantissa format */ function _setFactors( HTokenI _hToken, uint256 _newLTVFactorMantissa, uint256 _newCollateralFactorMantissa ) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized(); if (_newLTVFactorMantissa == 0) revert ControllerError(Error.INVALID_MAX_LTV_FACTOR); if (_newCollateralFactorMantissa <= _newLTVFactorMantissa) revert ControllerError(Error.INVALID_COLLATERAL_FACTOR); // Check collateral factor <= collateralFactorMaxMantissa if (collateralFactorMaxMantissa < _newCollateralFactorMantissa) { revert ControllerError(Error.INVALID_COLLATERAL_FACTOR); } // Fail if oracle not set, then the market is not listed if (address(_oracles[_hToken]) == address(0)) revert ControllerError(Error.ORACLE_NOT_SET); Market storage market = _markets[_hToken]; emit CollateralFactorUpdated(_hToken, market.collateralFactorMantissa, _newCollateralFactorMantissa); emit NewMaxLTVFactor(_hToken, market.LTVFactorMantissa, _newLTVFactorMantissa); // Set market's factors to new factors market.collateralFactorMantissa = _newCollateralFactorMantissa; market.LTVFactorMantissa = _newLTVFactorMantissa; } /** * @notice Add the market to the markets mapping and set it as listed * @dev Admin function to set isListed and add support for the market * @param _hToken The address of the market (token) to list */ function _supportMarket(HTokenI _hToken) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized(); Market storage market = _markets[_hToken]; if (market.isListed) { revert MarketError(Error.MARKET_ALREADY_LISTED); } if (!_hToken.supportsInterface(type(HTokenI).interfaceId)) revert WrongParams(); market.isListed = true; market.collateralFactorMantissa = 0; IERC20 underlying = _hToken.underlyingToken(); IERC721 collateral = _hToken.collateralToken(); if (address(underlying) == address(0) || address(collateral) == address(0)) revert ControllerError(Error.MARKET_INVALID); registeredUnderlying.add(address(underlying)); registeredCollateral.add(address(collateral)); emit MarketListed(_hToken); } /** * @notice Remove the market from the markets mapping * @param _hToken The address of the market (token) to de-list/remove */ function _removeMarket(HTokenI _hToken) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized(); Market storage market = _markets[_hToken]; if (!market.isListed) { revert MarketError(Error.MARKET_NOT_LISTED); } // You can not remove a market if the oracle is present. if (address(_oracles[_hToken]) != address(0)) revert ControllerError(Error.ORACLE_IS_PRESENT); delete _markets[_hToken]; IERC20 underlying = _hToken.underlyingToken(); IERC721 collateral = _hToken.collateralToken(); registeredUnderlying.remove(address(underlying)); registeredCollateral.remove(address(collateral)); emit MarketRemoved(_hToken); } /** * @notice Set the given borrow caps for the given hToken markets. Borrowing that brings total borrows to or above borrow cap will revert. * @dev Admin function to set the borrow caps. A borrow cap of 0 corresponds to unlimited borrowing. * @param _hTokens The addresses of the markets (tokens) to change the borrow caps for * @param _newBorrowCaps The new borrow cap values in underlying to be set. A value of 0 corresponds to unlimited borrowing. */ function _setMarketBorrowCaps(HTokenI[] calldata _hTokens, uint256[] calldata _newBorrowCaps) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized(); uint256 numMarkets = _hTokens.length; uint256 numBorrowCaps = _newBorrowCaps.length; if (numMarkets == 0 || numMarkets != numBorrowCaps) revert WrongParams(); for (uint256 i; i < numMarkets; ) { HTokenI hToken = _hTokens[i]; Market storage market = _markets[hToken]; if (!market.isListed) { revert MarketError(Error.MARKET_NOT_LISTED); } borrowCaps[_hTokens[i]] = _newBorrowCaps[i]; emit BorrowCapUpdated(_hTokens[i], _newBorrowCaps[i]); unchecked { ++i; } } } /** * @notice Pause an action for a particular HToken * @param _hToken HToken to pause * @param _state True for paused, false for unpaused * @param _target Target ID of the component to pause */ function _pauseComponent( HTokenI _hToken, bool _state, uint256 _target ) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(PAUSER_ROLE, msg.sender)) revert Unauthorized(); if (!_markets[_hToken].isListed) revert MarketError(Error.MARKET_NOT_LISTED); if (_target == 0) { marketPausedInfo[_hToken].borrowPaused = _state; emit ActionPausedhToken(_hToken, "Borrow", _state); } else if (_target == 1) { marketPausedInfo[_hToken].transferPaused = _state; emit ActionPausedhToken(_hToken, "Transfer", _state); } else if (_target == 2) { marketPausedInfo[_hToken].redeemPaused = _state; emit ActionPausedhToken(_hToken, "Redeem", _state); } else if (_target == 3) { marketPausedInfo[_hToken].liquidationPaused = _state; emit ActionPausedhToken(_hToken, "Liquidation", _state); } else if (_target == 4) { marketPausedInfo[_hToken].repayBorrowPaused = _state; emit ActionPausedhToken(_hToken, "RepayBorrow", _state); } else if (_target == 5) { marketPausedInfo[_hToken].depositPaused = _state; emit ActionPausedhToken(_hToken, "DepositUnderlying", _state); } else if (_target == 6) { marketPausedInfo[_hToken].depositCollateralPaused = _state; emit ActionPausedhToken(_hToken, "DepositCollateral", _state); } else revert ControllerError(Error.INVALID_ACTION); } /** * @notice Pauses the controller * @param _state True to pause, false to unpause */ function _pauseController(bool _state) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized(); if (_state) _pause(); else _unpause(); emit ControllerPaused(_state); } /** * @notice Set the borrow fee for the given hToken market * @param _market The market to set the borrow fee for * @param _fee The new borrow fee to set */ function _setBorrowFeePerMarket( HTokenI _market, uint256 _fee, uint256 _referralFee ) external { if (_fee > borrowFeeCap || _referralFee > borrowFeeCap) revert ControllerError(Error.AMOUNT_TOO_BIG); if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(FACTORY_ROLE, msg.sender)) revert Unauthorized(); emit BorrowFeePerMarketUpdated(_market, _fee, _referralFee); _borrowFeePerMarket[_market] = _fee; _referralBorrowFeePerMarket[_market] = _referralFee; } function _setReferralSigner(address _newSigner) external { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert Unauthorized(); emit ReferralSignerUpdated(_referralSigner, _newSigner); _referralSigner = _newSigner; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 _interfaceId) public pure override returns (bool) { return _interfaceId == type(AccessControlEnumerable).interfaceId || _interfaceId == type(ControllerI).interfaceId; } // ---------- Events ---------- /// @notice Emitted when an admin supports a market event MarketListed(HTokenI indexed _hToken); /// @notice Emitted when an admin removes a market event MarketRemoved(HTokenI indexed _hToken); /// @notice Emitted when an account enters a market event MarketEntered(HTokenI indexed _hToken, address _account); /// @notice Emitted when an account exits a market event MarketExited(HTokenI indexed _hToken, address _account); /// @notice Emitted when close factor is changed by admin event NewMaxLTVFactor(HTokenI indexed _hToken, uint256 _oldMaxLTVFactorMantissa, uint256 _newMaxLTVFactorMantissa); /// @notice Emitted when a collateral factor is changed by admin event CollateralFactorUpdated( HTokenI indexed _hToken, uint256 _oldCollateralFactorMantissa, uint256 _newCollateralFactorMantissa ); /// @notice Emitted when price oracle is changed event PriceOracleUpdated(PermissionlessOracleI _oldPriceOracle, PermissionlessOracleI _newPriceOracle); /// @notice Emitted when an action is paused on a market event ActionPausedhToken(HTokenI indexed _hToken, string _action, bool _pauseState); /// @notice Emitted when borrow cap for a hToken is changed event BorrowCapUpdated(HTokenI indexed _hToken, uint256 _newBorrowCap); /// @notice Emitted when borrow cap guardian is changed event BorrowCapGuardianUpdated(address _oldBorrowCapGuardian, address _newBorrowCapGuardian); /// @notice Emitted when the borrow fee per market is updated event BorrowFeePerMarketUpdated(HTokenI indexed _market, uint256 _fee, uint256 _referralFee); /// @notice Emitted when the signer that signs the referral codes is updated event ReferralSignerUpdated(address _oldSigner, address _newSigner); /// @notice Emitted when the controller is paused/unpaused event ControllerPaused(bool _paused); }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.15; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import ".././interfaces/HTokenI.sol"; import ".././interfaces/PermissionlessOracleI.sol"; /** /** * @title Honey Protocol Controller Storage * @notice Storage * @author Honey Labs Inc. * @custom:coauthor m4rio * @custom:contributor BowTiedPickle */ contract ControllerStorage { using EnumerableSet for EnumerableSet.AddressSet; /** * @notice Signer address that signed the referral hashes */ address internal _referralSigner; struct Market { /// @notice Whether or not this market is listed bool isListed; /** * @notice Multiplier representing the most one can borrow against their collateral in this market. * For instance, 0.5e18 to allow borrowing 50% of collateral value. * Must be between 0 (0%) and 1e18 (100%), and stored as a mantissa. */ uint256 LTVFactorMantissa; /** * @notice Multiplier representing the maximum fraction of collateral value allowable as debt before liquidation in this market. * For instance, 0.9e18 to liquidate any debt position >= 90% of the collateral value. * Must be between 0 (0%) and 1e18 (100%), and stored as a mantissa. */ uint256 collateralFactorMantissa; /// @notice Per-market mapping of "accounts in this market" mapping(address => bool) accountMembership; } /** * @notice Mapping for price oracles per market */ mapping(HTokenI => PermissionlessOracleI) internal _oracles; /** * @notice Official mapping of hTokens -> Market metadata * @dev Used e.g. to determine if a market is supported */ mapping(HTokenI => Market) internal _markets; /** * @notice Info about functionalities being paused in a market */ struct MarketPausedInfo { bool borrowPaused; bool transferPaused; bool redeemPaused; bool liquidationPaused; bool repayBorrowPaused; bool depositPaused; bool depositCollateralPaused; } /** * @notice Mapping for pausing components per market */ mapping(HTokenI => MarketPausedInfo) public marketPausedInfo; /** * @notice Whether the ERC-20 token is used as an underlying for any markets */ EnumerableSet.AddressSet internal registeredUnderlying; /** * @notice Whether the ERC-721 token is used as a collateral for any markets */ EnumerableSet.AddressSet internal registeredCollateral; /** * @notice Mapping of borrow caps enforced within borrowAllowed for each market address. * Defaults to zero which corresponds to unlimited borrowing. */ mapping(HTokenI => uint256) public borrowCaps; /** * @notice Mapping of borrow fee per market. The borrow fee represents the fee added on tob of the borrowed amount */ mapping(HTokenI => uint256) internal _borrowFeePerMarket; /** * @notice Mapping of borrow fee per market if the borrow is made via a referral code. * The borrow fee represents the fee added on tob of the borrowed amount */ mapping(HTokenI => uint256) internal _referralBorrowFeePerMarket; }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.4; import "./HTokenI.sol"; import "./PermissionlessOracleI.sol"; /** * @title Interface of Controller * @author Honey Labs Inc. * @custom:coauthor m4rio * @custom:contributor BowTiedPickle */ interface ControllerI { /** * @notice returns the oracle per market */ function oracle(HTokenI _hToken) external view returns (PermissionlessOracleI); /** * @notice Add assets to be included in account liquidity calculation * @param _hTokens The list of addresses of the hToken markets to be enabled */ function enterMarkets(HTokenI[] calldata _hTokens) external; /** * @notice Removes asset from sender's account liquidity calculation * @dev Sender must not have an outstanding borrow balance in the asset, * or be providing necessary collateral for an outstanding borrow. * @param _hToken The address of the asset to be removed */ function exitMarket(HTokenI _hToken) external; /** * @notice Checks if the account should be allowed to deposit underlying in the market * @param _hToken The market to verify the redeem against * @param _depositor The account which that wants to deposit * @param _amount The number of underlying it wants to deposit */ function depositUnderlyingAllowed( HTokenI _hToken, address _depositor, uint256 _amount ) external; /** * @notice Checks if the account should be allowed to borrow the underlying asset of the given market * @param _hToken The market to verify the borrow against * @param _borrower The account which would borrow the asset * @param _collateralId collateral Id, aka the NFT token Id * @param _borrowAmount The amount of underlying the account would borrow */ function borrowAllowed( HTokenI _hToken, address _borrower, uint256 _collateralId, uint256 _borrowAmount ) external; /** * @notice Checks if the account should be allowed to deposit a collateral * @param _hToken The market to verify the deposit of the collateral * @param _depositor The account which deposits the collateral * @param _collateralId The collateral token id */ function depositCollateralAllowed( HTokenI _hToken, address _depositor, uint256 _collateralId ) external; /** * @notice Checks if the account should be allowed to redeem tokens in the given market * @param _hToken The market to verify the redeem against * @param _redeemer The account which would redeem the tokens * @param _redeemTokens The number of hTokens to exchange for the underlying asset in the market */ function redeemAllowed( HTokenI _hToken, address _redeemer, uint256 _redeemTokens ) external view; /** * @notice Checks if the collateral is at risk of being liquidated * @param _hToken The market to verify the liquidation * @param _collateralId collateral Id, aka the NFT token Id */ function liquidationAllowed(HTokenI _hToken, uint256 _collateralId) external view; /** * @notice Determine what the account liquidity would be if the given amounts were redeemed/borrowed * @param _hToken The market to hypothetically redeem/borrow in * @param _account The account to determine liquidity for * @param _redeemTokens The number of tokens to hypothetically redeem * @param _borrowAmount The amount of underlying to hypothetically borrow * @param _collateralId collateral Id, aka the NFT token Id * @return liquidity - hypothetical account liquidity in excess of collateral requirements * @return shortfall - hypothetical account shortfall below collateral requirements * @return ltvShortfall - Loan to value shortfall, this is the max a user can borrow */ function getHypotheticalAccountLiquidity( HTokenI _hToken, address _account, uint256 _collateralId, uint256 _redeemTokens, uint256 _borrowAmount ) external view returns ( uint256 liquidity, uint256 shortfall, uint256 ltvShortfall ); /** * @notice Returns whether the given account is entered in the given asset * @param _hToken The hToken to check * @param _account The address of the account to check * @return True if the account is in the asset, otherwise false. */ function checkMembership(HTokenI _hToken, address _account) external view returns (bool); /** * @notice Checks if the account should be allowed to transfer tokens in the given market * @param _hToken The market to verify the transfer against */ function transferAllowed(HTokenI _hToken) external; /** * @notice Checks if the account should be allowed to repay a borrow in the given market * @param _hToken The market to verify the repay against * @param _repayAmount The amount of the underlying asset the account would repay * @param _collateralId collateral Id, aka the NFT token Id */ function repayBorrowAllowed( HTokenI _hToken, uint256 _repayAmount, uint256 _collateralId ) external view; /** * @notice checks if withdrawal are allowed for this token id * @param _hToken The market to verify the withdrawal from * @param _collateralId what to pay for */ function withdrawCollateralAllowed(HTokenI _hToken, uint256 _collateralId) external view; /** * @notice checks if a market exists and it's listed * @param _hToken the market we check to see if it exists * @return bool true or false */ function marketExists(HTokenI _hToken) external view returns (bool); /** * @notice Returns market data for a specific market * @param _hToken the market we want to retrieved Controller data * @return bool If the market is listed * @return uint256 MAX Factor Mantissa * @return uint256 Collateral Factor Mantissa */ function getMarketData(HTokenI _hToken) external view returns ( bool, uint256, uint256 ); /** * @notice checks if an underlying exists in the market * @param _underlying the underlying to check if exists * @return bool true or false */ function underlyingExistsInMarkets(address _underlying) external view returns (bool); /** * @notice checks if a collateral exists in the market * @param _collateral the collateral to check if exists * @return bool true or false */ function collateralExistsInMarkets(address _collateral) external view returns (bool); /** * @notice Checks if a certain action is paused within a market * @param _hToken The market we want to check if an action is paused * @param _target The action we want to check if it's paused * @return bool true or false */ function isActionPaused(HTokenI _hToken, uint256 _target) external view returns (bool); /** * @notice returns the borrow fee per market, accounts for referral * @param _hToken the market we want the borrow fee for * @param _referral referral code for Referral program of Honey Labs * @param _signature signed message provided by Honey Labs */ function getBorrowFeePerMarket( HTokenI _hToken, string calldata _referral, bytes calldata _signature ) external view returns (uint256, bool); /** * @notice returns the borrow fee per market if provided a referral code, accounts for referral * @param _hToken the market we want the borrow fee for */ function getReferralBorrowFeePerMarket(HTokenI _hToken) external view returns (uint256); // ---------- Permissioned Functions ---------- function _supportMarket(HTokenI _hToken) external; function _setPriceOracle(HTokenI _hToken, PermissionlessOracleI _newOracle) external; function _setFactors( HTokenI _hToken, uint256 _newMaxLTVFactorMantissa, uint256 _newCollateralFactorMantissa ) external; function _setBorrowFeePerMarket( HTokenI _market, uint256 _fee, uint256 _referralFee ) external; function _pauseComponent( HTokenI _hToken, bool _state, uint256 _target ) external; }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.4; import "./HTokenInternalI.sol"; /** * @title Interface of HToken * @author Honey Labs Inc. * @custom:coauthor BowTiedPickle * @custom:coauthor m4rio */ interface HTokenI is HTokenInternalI { /** * @notice Deposit underlying ERC-20 asset and mint hTokens * @dev Pull pattern, user must approve the contract before calling. If _to is address(0) then it becomes msg.sender * @param _amount Quantity of underlying ERC-20 to transfer in * @param _to Target address to mint hTokens to */ function depositUnderlying(uint256 _amount, address _to) external; /** * @notice Redeem a specified amount of hTokens for their underlying ERC-20 asset * @param _amount Quantity of hTokens to redeem for underlying ERC-20 */ function redeem(uint256 _amount) external; /** * @notice Withdraws the specified amount of underlying ERC-20 asset, consuming the minimum amount of hTokens necessary * @param _amount Quantity of underlying ERC-20 tokens to withdraw */ function withdraw(uint256 _amount) external; /** * @notice Deposit multiple specified tokens of the underlying ERC-721 asset and mint ERC-1155 deposit coupon NFTs * @dev Pull pattern, user must approve the contract before calling. * @param _collateralIds Token IDs of underlying ERC-721 to be transferred in */ function depositCollateral(uint256[] calldata _collateralIds) external; /** * @notice Sender borrows assets from the protocol against the specified collateral asset, without a referral code * @dev Collateral must be deposited first. * @param _borrowAmount Amount of underlying ERC-20 to borrow * @param _collateralId Token ID of underlying ERC-721 to be borrowed against */ function borrow(uint256 _borrowAmount, uint256 _collateralId) external; /** * @notice Sender borrows assets from the protocol against the specified collateral asset, using a referral code * @param _borrowAmount Amount of underlying ERC-20 to borrow * @param _collateralId Token ID of underlying ERC-721 to be borrowed against * @param _referral Referral code as a plain string * @param _signature Signed message authorizing the referral, provided by Honey Labs */ function borrowReferred( uint256 _borrowAmount, uint256 _collateralId, string calldata _referral, bytes calldata _signature ) external; /** * @notice Sender repays a borrow taken against the specified collateral asset * @dev Pull pattern, user must approve the contract before calling. * @param _repayAmount Amount of underlying ERC-20 to repay * @param _collateralId Token ID of underlying ERC-721 to be repaid against */ function repayBorrow( uint256 _repayAmount, uint256 _collateralId, address _to ) external; /** * @notice Burn deposit coupon NFTs and withdraw the associated underlying ERC-721 NFTs * @param _collateralIds Token IDs of underlying ERC-721 to be withdrawn */ function withdrawCollateral(uint256[] calldata _collateralIds) external; /** * @notice Trigger transfer of an NFT to the liquidation contract * @param _collateralId Token ID of underlying ERC-721 to be liquidated */ function liquidateBorrow(uint256 _collateralId) external; /** * @notice Pay off the entirety of a liquidated debt position and burn the coupon * @dev May only be called by the liquidator * @param _borrower Owner of the debt position * @param _collateralId Token ID of underlying ERC-721 to be closed out */ function closeoutLiquidation(address _borrower, uint256 _collateralId) external; /** * @notice Accrues all interest due to the protocol * @dev Call this before performing calculations using 'totalBorrows' or other contract-wide quantities */ function accrueInterest() external; // ----- Utility functions ----- /** * @notice Sweep accidental ERC-20 transfers to this contract. * @dev Tokens are sent to the DAO for later distribution * @param _token The address of the ERC-20 token to sweep */ function sweepToken(IERC20 _token) external; }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.4; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol"; import "@openzeppelin/contracts/access/IAccessControl.sol"; /** * @title Interface of HToken Internal * @author Honey Labs Inc. * @custom:coauthor m4rio * @custom:coauthor BowTiedPickle */ interface HTokenInternalI is IERC1155, IAccessControl { struct Coupon { uint32 id; //Coupon's id uint8 active; // Coupon activity status address owner; // Who is the current owner of this coupon uint256 collateralId; // tokenId of the collateral collection that is borrowed against uint256 borrowAmount; // Principal borrow balance, denominated in underlying ERC20 token. uint256 debtShares; // Debt shares, keeps the shares of total debt by the protocol } struct Collateral { uint256 collateralId; // TokenId of the collateral bool active; // Collateral activity status } // ----- Informational ----- function decimals() external view returns (uint8); function name() external view returns (string memory); function symbol() external view returns (string memory); // ----- Addresses ----- function collateralToken() external view returns (IERC721); function underlyingToken() external view returns (IERC20); // ----- Protocol Accounting ----- function totalBorrows() external view returns (uint256); function totalReserves() external view returns (uint256); function totalSupply() external view returns (uint256); function totalFuseFees() external view returns (uint256); function totalAdminCommission() external view returns (uint256); function accrualBlockNumber() external view returns (uint256); function interestIndexStored() external view returns (uint256); function totalProtocolCommissions() external view returns (uint256); function userToCoupons(address _user) external view returns (uint256); function collateralPerBorrowCouponId(uint256 _couponId) external view returns (Collateral memory); function borrowCoupons(uint256 _collateralId) external view returns (Coupon memory); // ----- Views ----- /** * @notice Get the outstanding debt of a collateral * @dev Simulates accrual of interest * @param _collateralId Token ID of underlying ERC-721 * @return Outstanding debt in units of underlying ERC-20 */ function getDebtForCollateral(uint256 _collateralId) external view returns (uint256); /** * @notice Returns the current per-block borrow interest rate for this hToken * @return The borrow interest rate per block, scaled by 1e18 */ function borrowRatePerBlock() external view returns (uint256); /** * @notice Get the outstanding debt of a coupon * @dev Simulates accrual of interest * @param _couponId ID of the coupon * @return Outstanding debt in units of underlying ERC-20 */ function getDebtForCoupon(uint256 _couponId) external view returns (uint256); /** * @notice Gets balance of this contract in terms of the underlying excluding the fees * @dev This excludes the value of the current message, if any * @return The quantity of underlying ERC-20 tokens owned by this contract */ function getCashPrior() external view returns (uint256); /** * @notice Get a snapshot of the account's balances, and the cached exchange rate * @dev This is used by controller to more efficiently perform liquidity checks. * @param _account Address of the account to snapshot * @return (token balance, borrow balance, exchange rate mantissa) */ function getAccountSnapshot(address _account) external view returns ( uint256, uint256, uint256 ); /** * @notice Get the outstanding debt of the protocol * @return Protocol debt */ function getDebt() external view returns (uint256); /** * @notice Returns protocol fees * @return Reserve factor mantissa * @return Admin fee mantissa * @return Hive fee mantissa * @return Initial exchange rate mantissa * @return Maximum borrow rate mantissa */ function getProtocolFees() external view returns ( uint256, uint256, uint256, uint256, uint256 ); /** * @notice Returns different addresses of the protocol * @return Liquidator address * @return HTokenHelper address * @return Controller address * @return Admin Fee Receiver address * @return Hive Fee Receiver address * @return Interest Model address * @return Referral Pool address * @return DAO address */ function getAddresses() external view returns ( address, address, address, address, address, address, address, address ); /** * @notice Get the last minted coupon ID * @return The last minted coupon ID */ function idCounter() external view returns (uint256); /** * @notice Get the coupon for a specific collateral NFT * @param _collateralId Token ID of underlying ERC-721 * @return Coupon */ function getSpecificCouponByCollateralId(uint256 _collateralId) external view returns (Coupon memory); /** * @notice Calculate the prevailing interest due per token of debt principal * @return Mantissa formatted interest rate per token of debt */ function interestIndex() external view returns (uint256); /** * @notice Accrue interest then return the up-to-date exchange rate from the ERC-20 underlying to the HToken * @return Calculated exchange rate scaled by 1e18 */ function exchangeRateCurrent() external returns (uint256); /** * @notice Calculates the exchange rate from the ERC-20 underlying to the HToken * @dev This function does not accrue interest before calculating the exchange rate * @return Calculated exchange rate scaled by 1e18 */ function exchangeRateStored() external view returns (uint256); /** * @notice Add to or take away from reserves * @dev Accrues interest * @param _amount Quantity of underlying ERC-20 token to change the reserves by */ function _modifyReserves(uint256 _amount, bool _add) external; /** * @notice Set new admin fee mantissas * @dev Accrues interest * @param _newAdminCommissionMantissa New admin fee mantissa */ function _setAdminCommission(uint256 _newAdminCommissionMantissa) external; /** * @notice Set new protocol commission and reserve factor mantissas * @dev Accrues interest * @param _newProtocolCommissionMantissa New protocol commission mantissa * @param _newReserveFactorMantissa New reserve factor mantissa */ function _setProtocolFees(uint256 _newProtocolCommissionMantissa, uint256 _newReserveFactorMantissa) external; /** * @notice Sets a new admin fee receiver * @param _newAddress Address of the new admin fee receiver * @param _target Target ID of the address to be set */ function _setAddressMarketAdmin(address _newAddress, uint256 _target) external; }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.4; import "./HTokenI.sol"; import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol"; /** * @title PermissionlessOracleI interface for the Permissionless oracle * @author Honey Labs Inc. * @custom:coauthor BowTiedPickle * @custom:coauthor m4rio */ interface PermissionlessOracleI { /** * @notice returns the price (in eth) for the floor of a collection * @param _collection address of the collection * @param _decimals adjust decimals of the returned price */ function getFloorPrice(address _collection, uint256 _decimals) external view returns (uint128, uint128); /** * @notice returns the latest price for a given pair * @param _erc20 the erc20 we want to get the price for in USD * @param _decimals decimals to denote the result in */ function getUnderlyingPriceInUSD(IERC20 _erc20, uint256 _decimals) external view returns (uint256); /** * @notice get price of eth * @param _decimals adjust decimals of the returned price */ function getEthPrice(uint256 _decimals) external view returns (uint256); /** * @notice get price feeds for a token * @return returns the Chainlink Aggregator interface */ function priceFeeds(IERC20 _token) external view returns (AggregatorV3Interface); /** * @notice returns the update threshold for a specific _collection */ function updateThreshold(address _collection) external view returns (uint256); /** * @notice returns the number of floors for a specific _collection * @param _address address of the collection * */ function getNoOfFloors(address _address) external view returns (uint256); /** * @notice returns the last updated timestamp for a specific _collection * @param _collection address of the collection * */ function getLastUpdated(address _collection) external view returns (uint256); }
//SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.15; error Unauthorized(); error AccrueInterestError(Error error); error WrongParams(); error Unexpected(string error); error InvalidCoupon(); error ControllerError(Error error); error AdminError(Error error); error MarketError(Error error); error HTokenError(Error error); error LiquidatorError(Error error); error ControlPanelError(Error error); error HTokenFactoryError(Error error); error PausedAction(); error NotOwner(); error ExternalFailure(string error); error Initialized(); error Uninitialized(); error OracleNotUpdated(); error TransferError(); error StalePrice(); /** * @title Errors reported across Honey Labs Inc. contracts * @author Honey Labs Inc. * @custom:coauthor BowTiedPickle * @custom:coauthor m4rio */ enum Error { UNAUTHORIZED, //0 INSUFFICIENT_LIQUIDITY, INVALID_COLLATERAL_FACTOR, MAX_MARKETS_IN, MARKET_NOT_LISTED, MARKET_ALREADY_LISTED, //5 MARKET_CAP_BORROW_REACHED, MARKET_NOT_FRESH, PRICE_ERROR, BAD_INPUT, AMOUNT_ZERO, //10 NO_DEBT, LIQUIDATION_NOT_ALLOWED, WITHDRAW_NOT_ALLOWED, INITIAL_EXCHANGE_MANTISSA, TRANSFER_ERROR, //15 COUPON_LOOKUP, TOKEN_INSUFFICIENT_CASH, BORROW_RATE_TOO_BIG, NONZERO_BORROW_BALANCE, AMOUNT_TOO_BIG, //20 AUCTION_NOT_ACTIVE, AUCTION_FINISHED, AUCTION_NOT_FINISHED, AUCTION_BID_TOO_LOW, AUCTION_NO_BIDS, //25 CLAWBACK_WINDOW_EXPIRED, CLAWBACK_WINDOW_NOT_EXPIRED, REFUND_NOT_OWED, TOKEN_LOOKUP_ERROR, INSUFFICIENT_WINNING_BID, //30 TOKEN_DEBT_NONEXISTENT, AUCTION_SETTLE_FORBIDDEN, NFT20_PAIR_NOT_FOUND, NFTX_PAIR_NOT_FOUND, TOKEN_NOT_PRESENT, //35 CANCEL_TOO_SOON, AUCTION_USER_NOT_FOUND, NOT_FOUND, INVALID_MAX_LTV_FACTOR, BALANCE_INSUFFICIENT, //40 ORACLE_NOT_SET, MARKET_INVALID, FACTORY_INVALID_COLLATERAL, FACTORY_INVALID_UNDERLYING, FACTORY_INVALID_ORACLE, //45 FACTORY_DEPLOYMENT_FAILED, REPAY_NOT_ALLOWED, NONZERO_UNDERLYING_BALANCE, INVALID_ACTION, ORACLE_IS_PRESENT, //50 FACTORY_INVALID_UNDERLYING_DECIMALS, FACTORY_INVALID_INTEREST_RATE_MODEL }
{ "optimizer": { "enabled": true, "runs": 300 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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