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Fetch Impl Addre... | 12583675 | 1353 days ago | IN | 0 ETH | 0.00061132 | ||||
Fetch Impl Addre... | 11999750 | 1443 days ago | IN | 0 ETH | 0.0045762 | ||||
Fetch Impl Addre... | 11966713 | 1448 days ago | IN | 0 ETH | 0.00495492 | ||||
Fetch Impl Addre... | 11566293 | 1509 days ago | IN | 0 ETH | 0.00176736 | ||||
Fetch Impl Addre... | 11499838 | 1520 days ago | IN | 0 ETH | 0.00246168 | ||||
Fetch Impl Addre... | 11499635 | 1520 days ago | IN | 0 ETH | 0.00164112 | ||||
Fetch Impl Addre... | 11442276 | 1528 days ago | IN | 0 ETH | 0.00153648 | ||||
Transfer Ownersh... | 11442023 | 1528 days ago | IN | 0 ETH | 0.00092517 |
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Contract Source Code Verified (Exact Match)
Contract Name:
ProxyController
Compiler Version
v0.6.8+commit.0bbfe453
Contract Source Code (Solidity Multiple files format)
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./SafeMath.sol"; import "./ITransparentUpgradeableProxy.sol"; contract ProxyController is Ownable { using SafeMath for uint256; ITransparentUpgradeableProxy private nftxProxy; address public implAddress; constructor(address nftx) public { initOwnable(); nftxProxy = ITransparentUpgradeableProxy(nftx); } function getAdmin() public returns (address) { return nftxProxy.admin(); } function fetchImplAddress() public { implAddress = nftxProxy.implementation(); } function changeProxyAdmin(address newAdmin) public onlyOwner { nftxProxy.changeAdmin(newAdmin); } function upgradeProxyTo(address newImpl) public onlyOwner { nftxProxy.upgradeTo(newImpl); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive vaults via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require( address(this).balance >= amount, "Address: insufficient balance" ); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{value: amount}(""); require( success, "Address: unable to send value, recipient may have reverted" ); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue( target, data, value, "Address: low-level call with value failed" ); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require( address(this).balance >= value, "Address: insufficient balance for call" ); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue( address target, bytes memory data, uint256 weiValue, string memory errorMessage ) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{value: weiValue}( data ); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; /* * @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 GSN 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 payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Timelocked.sol"; import "./SafeMath.sol"; import "./Initializable.sol"; abstract contract ControllerBase is Timelocked { using SafeMath for uint256; address public leadDev; uint256 numFuncCalls; mapping(uint256 => uint256) public time; mapping(uint256 => uint256) public funcIndex; mapping(uint256 => address payable) public addressParam; mapping(uint256 => uint256[]) public uintArrayParam; function transferOwnership(address newOwner) public override virtual { uint256 fcId = numFuncCalls; numFuncCalls = numFuncCalls.add(1); time[fcId] = now; funcIndex[fcId] = 0; addressParam[fcId] = payable(newOwner); } function initialize() public initializer { initOwnable(); } function setLeadDev(address newLeadDev) public virtual onlyOwner { leadDev = newLeadDev; } function stageFuncCall( uint256 _funcIndex, address payable _addressParam, uint256[] memory _uintArrayParam ) public virtual onlyOwner { uint256 fcId = numFuncCalls; numFuncCalls = numFuncCalls.add(1); time[fcId] = now; funcIndex[fcId] = _funcIndex; addressParam[fcId] = _addressParam; uintArrayParam[fcId] = _uintArrayParam; } function cancelFuncCall(uint256 fcId) public virtual onlyOwner { funcIndex[fcId] = 0; } function executeFuncCall(uint256 fcId) public virtual { if (funcIndex[fcId] == 0) { return; } else if (funcIndex[fcId] == 1) { require( uintArrayParam[fcId][2] >= uintArrayParam[fcId][1] && uintArrayParam[fcId][1] >= uintArrayParam[fcId][0], "Invalid delays" ); if (uintArrayParam[fcId][2] != longDelay) { onlyIfPastDelay(2, time[fcId]); } else if (uintArrayParam[fcId][1] != mediumDelay) { onlyIfPastDelay(1, time[fcId]); } else { onlyIfPastDelay(0, time[fcId]); } setDelays( uintArrayParam[fcId][0], uintArrayParam[fcId][1], uintArrayParam[fcId][2] ); } else if (funcIndex[fcId] == 2) { onlyIfPastDelay(1, time[fcId]); Ownable.transferOwnership(addressParam[fcId]); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; contract Counter { uint256 internal number; function getNumber() public view returns (uint256) { return number; } function increaseNumberBy(uint256 amount) public { number += amount; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./Context.sol"; import "./ERC20.sol"; import "./ERC20Burnable.sol"; contract D2Token is Context, Ownable, ERC20Burnable { address private vaultAddress; constructor(string memory name, string memory symbol) public ERC20(name, symbol) { initOwnable(); _mint(msg.sender, 0); } function mint(address to, uint256 amount) public onlyOwner { _mint(to, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Library for managing an enumerable variant of Solidity's * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`] * type. * * Maps have the following properties: * * - Entries are added, removed, and checked for existence in constant time * (O(1)). * - Entries are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableMap for EnumerableMap.UintToAddressMap; * * // Declare a set state variable * EnumerableMap.UintToAddressMap private myMap; * } * ``` * * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are * supported. */ library EnumerableMap { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Map type with // bytes32 keys and values. // The Map implementation uses private functions, and user-facing // implementations (such as Uint256ToAddressMap) are just wrappers around // the underlying Map. // This means that we can only create new EnumerableMaps for types that fit // in bytes32. struct MapEntry { bytes32 _key; bytes32 _value; } struct Map { // Storage of map keys and values MapEntry[] _entries; // Position of the entry defined by a key in the `entries` array, plus 1 // because index 0 means a key is not in the map. mapping (bytes32 => uint256) _indexes; } /** * @dev Adds a key-value pair to a map, or updates the value for an existing * key. O(1). * * Returns true if the key was added to the map, that is if it was not * already present. */ function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) { // We read and store the key's index to prevent multiple reads from the same storage slot uint256 keyIndex = map._indexes[key]; if (keyIndex == 0) { // Equivalent to !contains(map, key) map._entries.push(MapEntry({ _key: key, _value: value })); // The entry is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value map._indexes[key] = map._entries.length; return true; } else { map._entries[keyIndex - 1]._value = value; return false; } } /** * @dev Removes a key-value pair from a map. O(1). * * Returns true if the key was removed from the map, that is if it was present. */ function _remove(Map storage map, bytes32 key) private returns (bool) { // We read and store the key's index to prevent multiple reads from the same storage slot uint256 keyIndex = map._indexes[key]; if (keyIndex != 0) { // Equivalent to contains(map, key) // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one // in the array, and then remove the last entry (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = keyIndex - 1; uint256 lastIndex = map._entries.length - 1; // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. MapEntry storage lastEntry = map._entries[lastIndex]; // Move the last entry to the index where the entry to delete is map._entries[toDeleteIndex] = lastEntry; // Update the index for the moved entry map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved entry was stored map._entries.pop(); // Delete the index for the deleted slot delete map._indexes[key]; return true; } else { return false; } } /** * @dev Returns true if the key is in the map. O(1). */ function _contains(Map storage map, bytes32 key) private view returns (bool) { return map._indexes[key] != 0; } /** * @dev Returns the number of key-value pairs in the map. O(1). */ function _length(Map storage map) private view returns (uint256) { return map._entries.length; } /** * @dev Returns the key-value pair stored at position `index` in the map. O(1). * * Note that there are no guarantees on the ordering of entries inside the * array, and it may change when more entries are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) { require(map._entries.length > index, "EnumerableMap: index out of bounds"); MapEntry storage entry = map._entries[index]; return (entry._key, entry._value); } /** * @dev Returns the value associated with `key`. O(1). * * Requirements: * * - `key` must be in the map. */ function _get(Map storage map, bytes32 key) private view returns (bytes32) { return _get(map, key, "EnumerableMap: nonexistent key"); } /** * @dev Same as {_get}, with a custom error message when `key` is not in the map. */ function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) { uint256 keyIndex = map._indexes[key]; require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key) return map._entries[keyIndex - 1]._value; // All indexes are 1-based } // UintToAddressMap struct UintToAddressMap { Map _inner; } /** * @dev Adds a key-value pair to a map, or updates the value for an existing * key. O(1). * * Returns true if the key was added to the map, that is if it was not * already present. */ function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) { return _set(map._inner, bytes32(key), bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the key was removed from the map, that is if it was present. */ function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) { return _remove(map._inner, bytes32(key)); } /** * @dev Returns true if the key is in the map. O(1). */ function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) { return _contains(map._inner, bytes32(key)); } /** * @dev Returns the number of elements in the map. O(1). */ function length(UintToAddressMap storage map) internal view returns (uint256) { return _length(map._inner); } /** * @dev Returns the element 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(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) { (bytes32 key, bytes32 value) = _at(map._inner, index); return (uint256(key), address(uint256(value))); } /** * @dev Returns the value associated with `key`. O(1). * * Requirements: * * - `key` must be in the map. */ function get(UintToAddressMap storage map, uint256 key) internal view returns (address) { return address(uint256(_get(map._inner, bytes32(key)))); } /** * @dev Same as {get}, with a custom error message when `key` is not in the map. */ function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) { return address(uint256(_get(map._inner, bytes32(key), errorMessage))); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; /** * @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 v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ 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; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. 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] = toDeleteIndex + 1; // All indexes are 1-based // 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) { require( set._values.length > index, "EnumerableSet: index out of bounds" ); return set._values[index]; } // 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(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(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(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(uint256(_at(set._inner, index))); } // 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 on 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)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts may inherit from this and call {_registerInterface} to declare * their support of an interface. */ contract ERC165 is IERC165 { /* * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7 */ bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7; /** * @dev Mapping of interface ids to whether or not it's supported. */ mapping(bytes4 => bool) private _supportedInterfaces; constructor () internal { // Derived contracts need only register support for their own interfaces, // we register support for ERC165 itself here _registerInterface(_INTERFACE_ID_ERC165); } /** * @dev See {IERC165-supportsInterface}. * * Time complexity O(1), guaranteed to always use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) public view override returns (bool) { return _supportedInterfaces[interfaceId]; } /** * @dev Registers the contract as an implementer of the interface defined by * `interfaceId`. Support of the actual ERC165 interface is automatic and * registering its interface id is not required. * * See {IERC165-supportsInterface}. * * Requirements: * * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`). */ function _registerInterface(bytes4 interfaceId) internal virtual { require(interfaceId != 0xffffffff, "ERC165: invalid interface id"); _supportedInterfaces[interfaceId] = true; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Context.sol"; import "./IERC20.sol"; import "./SafeMath.sol"; import "./Address.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor(string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve( sender, _msgSender(), _allowances[sender][_msgSender()].sub( amount, "ERC20: transfer amount exceeds allowance" ) ); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue) ); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].sub( subtractedValue, "ERC20: decreased allowance below zero" ) ); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub( amount, "ERC20: transfer amount exceeds balance" ); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub( amount, "ERC20: burn amount exceeds balance" ); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } function _changeName(string memory name_) internal { _name = name_; } function _changeSymbol(string memory symbol_) internal { _symbol = symbol_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Context.sol"; import "./ERC20.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20 { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function burnFrom(address account, uint256 amount) public virtual { uint256 decreasedAllowance = allowance(account, _msgSender()).sub( amount, "ERC20: burn amount exceeds allowance" ); _approve(account, _msgSender(), decreasedAllowance); _burn(account, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "./Context.sol"; import "./IERC721.sol"; import "./IERC721Metadata.sol"; import "./IERC721Enumerable.sol"; import "./IERC721Receiver.sol"; import "./ERC165.sol"; import "./SafeMath.sol"; import "./Address.sol"; import "./EnumerableSet.sol"; import "./EnumerableMap.sol"; import "./Strings.sol"; /** * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://eips.ethereum.org/EIPS/eip-721 */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable { using SafeMath for uint256; using Address for address; using EnumerableSet for EnumerableSet.UintSet; using EnumerableMap for EnumerableMap.UintToAddressMap; using Strings for uint256; // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector` bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; // Mapping from holder address to their (enumerable) set of owned tokens mapping(address => EnumerableSet.UintSet) private _holderTokens; // Enumerable mapping from token ids to their owners EnumerableMap.UintToAddressMap private _tokenOwners; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; // Token name string private _name; // Token symbol string private _symbol; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; // Base URI string private _baseURI; /* * bytes4(keccak256('balanceOf(address)')) == 0x70a08231 * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3 * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465 * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5 * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde * * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^ * 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd */ bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd; /* * bytes4(keccak256('name()')) == 0x06fdde03 * bytes4(keccak256('symbol()')) == 0x95d89b41 * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd * * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f */ bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f; /* * bytes4(keccak256('totalSupply()')) == 0x18160ddd * bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59 * bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7 * * => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63 */ bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name, string memory symbol) public { _name = name; _symbol = symbol; // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721); _registerInterface(_INTERFACE_ID_ERC721_METADATA); _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view override returns (uint256) { require( owner != address(0), "ERC721: balance query for the zero address" ); return _holderTokens[owner].length(); } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view override returns (address) { return _tokenOwners.get( tokenId, "ERC721: owner query for nonexistent token" ); } /** * @dev See {IERC721Metadata-name}. */ function name() public view override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view override returns (string memory) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); string memory _tokenURI = _tokenURIs[tokenId]; // If there is no base URI, return the token URI. if (bytes(_baseURI).length == 0) { return _tokenURI; } // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked). if (bytes(_tokenURI).length > 0) { return string(abi.encodePacked(_baseURI, _tokenURI)); } // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI. return string(abi.encodePacked(_baseURI, tokenId.toString())); } /** * @dev Returns the base URI set via {_setBaseURI}. This will be * automatically added as a prefix in {tokenURI} to each token's URI, or * to the token ID if no specific URI is set for that token ID. */ function baseURI() public view returns (string memory) { return _baseURI; } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) { return _holderTokens[owner].at(index); } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view override returns (uint256) { // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds return _tokenOwners.length(); } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view override returns (uint256) { (uint256 tokenId, ) = _tokenOwners.at(index); return tokenId; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view override returns (address) { require( _exists(tokenId), "ERC721: approved query for nonexistent token" ); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _safeTransfer(from, to, tokenId, _data); } /** * @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. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require( _checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view returns (bool) { return _tokenOwners.contains(tokenId); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) { require( _exists(tokenId), "ERC721: operator query for nonexistent token" ); address owner = ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: d* * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } // For testing function safeMint(address to, uint256 tokenId) public virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _holderTokens[to].add(tokenId); _tokenOwners.set(tokenId, to); emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); // Clear metadata (if any) if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } _holderTokens[owner].remove(tokenId); _tokenOwners.remove(tokenId); emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require( ownerOf(tokenId) == from, "ERC721: transfer of token that is not own" ); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _holderTokens[from].remove(tokenId); _holderTokens[to].add(tokenId); _tokenOwners.set(tokenId, to); emit Transfer(from, to, tokenId); } /** * @dev Sets `_tokenURI` as the tokenURI of `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual { require( _exists(tokenId), "ERC721Metadata: URI set of nonexistent token" ); _tokenURIs[tokenId] = _tokenURI; } /** * @dev Internal function to set the base URI for all token IDs. It is * automatically added as a prefix to the value returned in {tokenURI}, * or to the token ID if {tokenURI} is empty. */ function _setBaseURI(string memory baseURI_) internal virtual { _baseURI = baseURI_; } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (!to.isContract()) { return true; } bytes memory returndata = to.functionCall( abi.encodeWithSelector( IERC721Receiver(to).onERC721Received.selector, _msgSender(), from, tokenId, _data ), "ERC721: transfer to non ERC721Receiver implementer" ); bytes4 retval = abi.decode(returndata, (bytes4)); return (retval == _ERC721_RECEIVED); } function _approve(address to, uint256 tokenId) private { _tokenApprovals[tokenId] = to; emit Approval(ownerOf(tokenId), to, tokenId); } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "./IERC721Receiver.sol"; /** * @dev Implementation of the {IERC721Receiver} interface. * * Accepts all token transfers. * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}. */ contract ERC721Holder is IERC721Receiver { /** * @dev See {IERC721Receiver-onERC721Received}. * * Always returns `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address, address, uint256, bytes memory ) public virtual override returns (bytes4) { return this.onERC721Received.selector; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Context.sol"; import "./ERC721.sol"; contract ERC721Public is Context, ERC721 { uint256 public minTokenId; uint256 public maxTokenId; constructor( string memory name, string memory symbol, uint256 _minTokenId, uint256 _maxTokenId ) public ERC721(name, symbol) { minTokenId = _minTokenId; maxTokenId = _maxTokenId; } function mint(uint256 tokenId, address recipient) public { require(tokenId >= minTokenId, "tokenId < minTokenId"); require(tokenId <= maxTokenId, "tokenId > maxTokenId"); _mint(recipient, tokenId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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 pragma solidity 0.6.8; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval( address indexed owner, address indexed spender, uint256 value ); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./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`, 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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * 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 Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @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 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); /** * @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; }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./IERC721.sol"; interface IERC721Plus is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Pausable.sol"; import "./IXToken.sol"; import "./IERC721.sol"; import "./EnumerableSet.sol"; import "./ReentrancyGuard.sol"; import "./SafeMath.sol"; interface INFTX { event NFTsDeposited(uint256 vaultId, uint256[] nftIds, address from); event NFTsRedeemed(uint256 vaultId, uint256[] nftIds, address to); event TokensMinted(uint256 vaultId, uint256 amount, address to); event TokensBurned(uint256 vaultId, uint256 amount, address from); event EligibilitySet(uint256 vaultId, uint256[] nftIds, bool _boolean); event ReservesIncreased(uint256 vaultId, uint256 nftId); event ReservesDecreased(uint256 vaultId, uint256 nftId); function store() external returns (address); function transferOwnership(address newOwner) external; function vaultSize(uint256 vaultId) external view returns (uint256); function isEligible(uint256 vaultId, uint256 nftId) external view returns (bool); function createVault(address _erc20Address, address _nftAddress) external returns (uint256); function depositETH(uint256 vaultId) external payable; function setIsEligible( uint256 vaultId, uint256[] calldata nftIds, bool _boolean ) external; function setNegateEligibility(uint256 vaultId, bool shouldNegate) external; function setShouldReserve( uint256 vaultId, uint256[] calldata nftIds, bool _boolean ) external; function setIsReserved( uint256 vaultId, uint256[] calldata nftIds, bool _boolean ) external; function setExtension(address contractAddress, bool _boolean) external; function directRedeem(uint256 vaultId, uint256[] calldata nftIds) external payable; function mint(uint256 vaultId, uint256[] calldata nftIds, uint256 d2Amount) external payable; function redeem(uint256 vaultId, uint256 numNFTs) external payable; function mintAndRedeem(uint256 vaultId, uint256[] calldata nftIds) external payable; function changeTokenName(uint256 vaultId, string calldata newName) external; function changeTokenSymbol(uint256 vaultId, string calldata newSymbol) external; function setManager(uint256 vaultId, address newManager) external; function finalizeVault(uint256 vaultId) external; function closeVault(uint256 vaultId) external; function setMintFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) external; function setBurnFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) external; function setDualFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) external; function setSupplierBounty(uint256 vaultId, uint256 ethMax, uint256 length) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.4.24 <0.7.0; /** * @title Initializable * * @dev Helper contract to support initializer functions. To use it, replace * the constructor with a function that has the `initializer` modifier. * WARNING: Unlike constructors, initializer functions must be manually * invoked. This applies both to deploying an Initializable contract, as well * as extending an Initializable contract via inheritance. * WARNING: When used with inheritance, manual care must be taken to not invoke * a parent initializer twice, or ensure that all initializers are idempotent, * because this is not dealt with automatically as with constructors. */ contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private initializing; /** * @dev Modifier to use in the initializer function of a contract. */ modifier initializer() { require( initializing || isConstructor() || !initialized, "Contract instance has already been initialized" ); bool isTopLevelCall = !initializing; if (isTopLevelCall) { initializing = true; initialized = true; } _; if (isTopLevelCall) { initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; assembly { cs := extcodesize(self) } return cs == 0; } // Reserved storage space to allow for layout changes in the future. uint256[50] private ______gap; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; interface ITokenManager { function mint(address _receiver, uint256 _amount) external; function issue(uint256 _amount) external; function assign(address _receiver, uint256 _amount) external; function burn(address _holder, uint256 _amount) external; function assignVested( address _receiver, uint256 _amount, uint64 _start, uint64 _cliff, uint64 _vested, bool _revokable ) external returns (uint256); function revokeVesting(address _holder, uint256 _vestingId) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; interface ITransparentUpgradeableProxy { function admin() external returns (address); function implementation() external returns (address); function changeAdmin(address newAdmin) external; function upgradeTo(address newImplementation) external; function upgradeToAndCall(address newImplementation, bytes calldata data) external payable; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./EnumerableSet.sol"; import "./Ownable.sol"; import "./SafeMath.sol"; import "./IXToken.sol"; import "./IERC721.sol"; import "./EnumerableSet.sol"; interface IXStore { struct FeeParams { uint256 ethBase; uint256 ethStep; } struct BountyParams { uint256 ethMax; uint256 length; } struct Vault { address xTokenAddress; address nftAddress; address manager; IXToken xToken; IERC721 nft; EnumerableSet.UintSet holdings; EnumerableSet.UintSet reserves; mapping(uint256 => address) requester; mapping(uint256 => bool) isEligible; mapping(uint256 => bool) shouldReserve; bool allowMintRequests; bool flipEligOnRedeem; bool negateEligibility; bool isFinalized; bool isClosed; FeeParams mintFees; FeeParams burnFees; FeeParams dualFees; BountyParams supplierBounty; uint256 ethBalance; uint256 tokenBalance; bool isD2Vault; address d2AssetAddress; IERC20 d2Asset; uint256 d2Holdings; } function isExtension(address addr) external view returns (bool); function randNonce() external view returns (uint256); function vaultsLength() external view returns (uint256); function xTokenAddress(uint256 vaultId) external view returns (address); function nftAddress(uint256 vaultId) external view returns (address); function manager(uint256 vaultId) external view returns (address); function xToken(uint256 vaultId) external view returns (IXToken); function nft(uint256 vaultId) external view returns (IERC721); function holdingsLength(uint256 vaultId) external view returns (uint256); function holdingsContains(uint256 vaultId, uint256 elem) external view returns (bool); function holdingsAt(uint256 vaultId, uint256 index) external view returns (uint256); function reservesLength(uint256 vaultId) external view returns (uint256); function reservesContains(uint256 vaultId, uint256 elem) external view returns (bool); function reservesAt(uint256 vaultId, uint256 index) external view returns (uint256); function requester(uint256 vaultId, uint256 id) external view returns (address); function isEligible(uint256 vaultId, uint256 id) external view returns (bool); function shouldReserve(uint256 vaultId, uint256 id) external view returns (bool); function allowMintRequests(uint256 vaultId) external view returns (bool); function flipEligOnRedeem(uint256 vaultId) external view returns (bool); function negateEligibility(uint256 vaultId) external view returns (bool); function isFinalized(uint256 vaultId) external view returns (bool); function isClosed(uint256 vaultId) external view returns (bool); function mintFees(uint256 vaultId) external view returns (uint256, uint256); function burnFees(uint256 vaultId) external view returns (uint256, uint256); function dualFees(uint256 vaultId) external view returns (uint256, uint256); function supplierBounty(uint256 vaultId) external view returns (uint256, uint256); function ethBalance(uint256 vaultId) external view returns (uint256); function tokenBalance(uint256 vaultId) external view returns (uint256); function isD2Vault(uint256 vaultId) external view returns (bool); function d2AssetAddress(uint256 vaultId) external view returns (address); function d2Asset(uint256 vaultId) external view returns (IERC20); function d2Holdings(uint256 vaultId) external view returns (uint256); function setXTokenAddress(uint256 vaultId, address _xTokenAddress) external; function setNftAddress(uint256 vaultId, address _assetAddress) external; function setManager(uint256 vaultId, address _manager) external; function setXToken(uint256 vaultId) external; function setNft(uint256 vaultId) external; function holdingsAdd(uint256 vaultId, uint256 elem) external; function holdingsRemove(uint256 vaultId, uint256 elem) external; function reservesAdd(uint256 vaultId, uint256 elem) external; function reservesRemove(uint256 vaultId, uint256 elem) external; function setRequester(uint256 vaultId, uint256 id, address _requester) external; function setIsEligible(uint256 vaultId, uint256 id, bool _bool) external; function setShouldReserve(uint256 vaultId, uint256 id, bool _shouldReserve) external; function setAllowMintRequests(uint256 vaultId, bool isAllowed) external; function setFlipEligOnRedeem(uint256 vaultId, bool flipElig) external; function setNegateEligibility(uint256 vaultId, bool negateElig) external; function setIsFinalized(uint256 vaultId, bool _isFinalized) external; function setIsClosed(uint256 vaultId, bool _isClosed) external; function setMintFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) external; function setBurnFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) external; function setDualFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) external; function setSupplierBounty(uint256 vaultId, uint256 ethMax, uint256 length) external; function setEthBalance(uint256 vaultId, uint256 _ethBalance) external; function setTokenBalance(uint256 vaultId, uint256 _tokenBalance) external; function setIsD2Vault(uint256 vaultId, bool _isD2Vault) external; function setD2AssetAddress(uint256 vaultId, address _assetAddress) external; function setD2Asset(uint256 vaultId) external; function setD2Holdings(uint256 vaultId, uint256 _d2Holdings) external; //////////////////////////////////////////////////////////// function setIsExtension(address addr, bool _isExtension) external; function setRandNonce(uint256 _randNonce) external; function addNewVault() external returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./IERC20.sol"; interface IXToken is IERC20 { function owner() external returns (address); function burn(uint256 amount) external; function burnFrom(address account, uint256 amount) external; function mint(address to, uint256 amount) external; function changeName(string calldata name) external; function changeSymbol(string calldata symbol) external; function setVaultAddress(address vaultAddress) external; function transferOwnership(address newOwner) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Pausable.sol"; import "./IXToken.sol"; import "./IERC721.sol"; import "./ReentrancyGuard.sol"; import "./ERC721Holder.sol"; import "./IXStore.sol"; import "./Initializable.sol"; import "./SafeERC20.sol"; contract NFTX is Pausable, ReentrancyGuard, ERC721Holder { using SafeMath for uint256; using SafeERC20 for IERC20; event NewVault(uint256 indexed vaultId, address sender); event Mint( uint256 indexed vaultId, uint256[] nftIds, uint256 d2Amount, address sender ); event Redeem( uint256 indexed vaultId, uint256[] nftIds, uint256 d2Amount, address sender ); event MintRequested( uint256 indexed vaultId, uint256[] nftIds, address sender ); IXStore public store; function initialize(address storeAddress) public initializer { initOwnable(); initReentrancyGuard(); store = IXStore(storeAddress); } /* function onlyManager(uint256 vaultId) internal view { } */ function onlyPrivileged(uint256 vaultId) internal view { if (store.isFinalized(vaultId)) { require(msg.sender == owner(), "Not owner"); } else { require(msg.sender == store.manager(vaultId), "Not manager"); } } function isEligible(uint256 vaultId, uint256 nftId) public view virtual returns (bool) { return store.negateEligibility(vaultId) ? !store.isEligible(vaultId, nftId) : store.isEligible(vaultId, nftId); } function vaultSize(uint256 vaultId) public view virtual returns (uint256) { return store.isD2Vault(vaultId) ? store.d2Holdings(vaultId) : store.holdingsLength(vaultId).add( store.reservesLength(vaultId) ); } function _getPseudoRand(uint256 modulus) internal virtual returns (uint256) { store.setRandNonce(store.randNonce().add(1)); return uint256( keccak256(abi.encodePacked(now, msg.sender, store.randNonce())) ) % modulus; } function _calcFee( uint256 amount, uint256 ethBase, uint256 ethStep, bool isD2 ) internal pure virtual returns (uint256) { if (amount == 0) { return 0; } else if (isD2) { return ethBase.add(ethStep.mul(amount.sub(10**18)).div(10**18)); } else { uint256 n = amount; uint256 nSub1 = amount >= 1 ? n.sub(1) : 0; return ethBase.add(ethStep.mul(nSub1)); } } function _calcBounty(uint256 vaultId, uint256 numTokens, bool isBurn) public view virtual returns (uint256) { (, uint256 length) = store.supplierBounty(vaultId); if (length == 0) return 0; uint256 ethBounty = 0; for (uint256 i = 0; i < numTokens; i = i.add(1)) { uint256 _vaultSize = isBurn ? vaultSize(vaultId).sub(i.add(1)) : vaultSize(vaultId).add(i); uint256 _ethBounty = _calcBountyHelper(vaultId, _vaultSize); ethBounty = ethBounty.add(_ethBounty); } return ethBounty; } function _calcBountyD2(uint256 vaultId, uint256 amount, bool isBurn) public view virtual returns (uint256) { (uint256 ethMax, uint256 length) = store.supplierBounty(vaultId); if (length == 0) return 0; uint256 prevSize = vaultSize(vaultId); uint256 prevDepth = prevSize > length ? 0 : length.sub(prevSize); uint256 prevReward = _calcBountyD2Helper(ethMax, length, prevSize); uint256 newSize = isBurn ? vaultSize(vaultId).sub(amount) : vaultSize(vaultId).add(amount); uint256 newDepth = newSize > length ? 0 : length.sub(newSize); uint256 newReward = _calcBountyD2Helper(ethMax, length, newSize); uint256 prevTriangle = prevDepth.mul(prevReward).div(2).div(10**18); uint256 newTriangle = newDepth.mul(newReward).div(2).div(10**18); return isBurn ? newTriangle.sub(prevTriangle) : prevTriangle.sub(newTriangle); } function _calcBountyD2Helper(uint256 ethMax, uint256 length, uint256 size) internal pure returns (uint256) { if (size >= length) return 0; return ethMax.sub(ethMax.mul(size).div(length)); } function _calcBountyHelper(uint256 vaultId, uint256 _vaultSize) internal view virtual returns (uint256) { (uint256 ethMax, uint256 length) = store.supplierBounty(vaultId); if (_vaultSize >= length) return 0; uint256 depth = length.sub(_vaultSize); return ethMax.mul(depth).div(length); } function createVault( address _xTokenAddress, address _assetAddress, bool _isD2Vault ) public virtual nonReentrant returns (uint256) { onlyOwnerIfPaused(0); IXToken xToken = IXToken(_xTokenAddress); require(xToken.owner() == address(this), "Wrong owner"); uint256 vaultId = store.addNewVault(); store.setXTokenAddress(vaultId, _xTokenAddress); store.setXToken(vaultId); if (!_isD2Vault) { store.setNftAddress(vaultId, _assetAddress); store.setNft(vaultId); store.setNegateEligibility(vaultId, true); } else { store.setD2AssetAddress(vaultId, _assetAddress); store.setD2Asset(vaultId); store.setIsD2Vault(vaultId, true); } store.setManager(vaultId, msg.sender); emit NewVault(vaultId, msg.sender); return vaultId; } function depositETH(uint256 vaultId) public payable virtual { store.setEthBalance(vaultId, store.ethBalance(vaultId).add(msg.value)); } function _payEthFromVault( uint256 vaultId, uint256 amount, address payable to ) internal virtual { uint256 ethBalance = store.ethBalance(vaultId); uint256 amountToSend = ethBalance < amount ? ethBalance : amount; if (amountToSend > 0) { store.setEthBalance(vaultId, ethBalance.sub(amountToSend)); to.transfer(amountToSend); } } function _receiveEthToVault( uint256 vaultId, uint256 amountRequested, uint256 amountSent ) internal virtual { require(amountSent >= amountRequested, "Value too low"); store.setEthBalance( vaultId, store.ethBalance(vaultId).add(amountRequested) ); if (amountSent > amountRequested) { msg.sender.transfer(amountSent.sub(amountRequested)); } } function requestMint(uint256 vaultId, uint256[] memory nftIds) public payable virtual nonReentrant { onlyOwnerIfPaused(1); require(store.allowMintRequests(vaultId), "Not allowed"); // TODO: implement bounty + fees for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { require( store.nft(vaultId).ownerOf(nftIds[i]) != address(this), "Already owner" ); store.nft(vaultId).safeTransferFrom( msg.sender, address(this), nftIds[i] ); require( store.nft(vaultId).ownerOf(nftIds[i]) == address(this), "Not received" ); store.setRequester(vaultId, nftIds[i], msg.sender); } emit MintRequested(vaultId, nftIds, msg.sender); } function revokeMintRequests(uint256 vaultId, uint256[] memory nftIds) public virtual nonReentrant { for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { require( store.requester(vaultId, nftIds[i]) == msg.sender, "Not requester" ); store.setRequester(vaultId, nftIds[i], address(0)); store.nft(vaultId).safeTransferFrom( address(this), msg.sender, nftIds[i] ); } } function approveMintRequest(uint256 vaultId, uint256[] memory nftIds) public virtual { onlyPrivileged(vaultId); for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { address requester = store.requester(vaultId, nftIds[i]); require(requester != address(0), "No request"); require( store.nft(vaultId).ownerOf(nftIds[i]) == address(this), "Not owner" ); store.setRequester(vaultId, nftIds[i], address(0)); store.setIsEligible(vaultId, nftIds[i], true); if (store.shouldReserve(vaultId, nftIds[i])) { store.reservesAdd(vaultId, nftIds[i]); } else { store.holdingsAdd(vaultId, nftIds[i]); } store.xToken(vaultId).mint(requester, 10**18); } } function _mint(uint256 vaultId, uint256[] memory nftIds, bool isDualOp) internal virtual { for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { uint256 nftId = nftIds[i]; require(isEligible(vaultId, nftId), "Not eligible"); require( store.nft(vaultId).ownerOf(nftId) != address(this), "Already owner" ); store.nft(vaultId).safeTransferFrom( msg.sender, address(this), nftId ); require( store.nft(vaultId).ownerOf(nftId) == address(this), "Not received" ); if (store.shouldReserve(vaultId, nftId)) { store.reservesAdd(vaultId, nftId); } else { store.holdingsAdd(vaultId, nftId); } } if (!isDualOp) { uint256 amount = nftIds.length.mul(10**18); store.xToken(vaultId).mint(msg.sender, amount); } } function _mintD2(uint256 vaultId, uint256 amount) internal virtual { store.d2Asset(vaultId).safeTransferFrom( msg.sender, address(this), amount ); store.xToken(vaultId).mint(msg.sender, amount); store.setD2Holdings(vaultId, store.d2Holdings(vaultId).add(amount)); } function _redeem(uint256 vaultId, uint256 numNFTs, bool isDualOp) internal virtual { for (uint256 i = 0; i < numNFTs; i = i.add(1)) { uint256[] memory nftIds = new uint256[](1); if (store.holdingsLength(vaultId) > 0) { uint256 rand = _getPseudoRand(store.holdingsLength(vaultId)); nftIds[0] = store.holdingsAt(vaultId, rand); } else { uint256 rand = _getPseudoRand(store.reservesLength(vaultId)); nftIds[0] = store.reservesAt(vaultId, rand); } _redeemHelper(vaultId, nftIds, isDualOp); emit Redeem(vaultId, nftIds, 0, msg.sender); } } function _redeemD2(uint256 vaultId, uint256 amount) internal virtual { store.xToken(vaultId).burnFrom(msg.sender, amount); store.d2Asset(vaultId).safeTransfer(msg.sender, amount); store.setD2Holdings(vaultId, store.d2Holdings(vaultId).sub(amount)); uint256[] memory nftIds = new uint256[](0); emit Redeem(vaultId, nftIds, amount, msg.sender); } function _redeemHelper( uint256 vaultId, uint256[] memory nftIds, bool isDualOp ) internal virtual { if (!isDualOp) { store.xToken(vaultId).burnFrom( msg.sender, nftIds.length.mul(10**18) ); } for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { uint256 nftId = nftIds[i]; require( store.holdingsContains(vaultId, nftId) || store.reservesContains(vaultId, nftId), "NFT not in vault" ); if (store.holdingsContains(vaultId, nftId)) { store.holdingsRemove(vaultId, nftId); } else { store.reservesRemove(vaultId, nftId); } if (store.flipEligOnRedeem(vaultId)) { bool isElig = store.isEligible(vaultId, nftId); store.setIsEligible(vaultId, nftId, !isElig); } store.nft(vaultId).safeTransferFrom( address(this), msg.sender, nftId ); } } function mint(uint256 vaultId, uint256[] memory nftIds, uint256 d2Amount) public payable virtual nonReentrant { onlyOwnerIfPaused(1); uint256 amount = store.isD2Vault(vaultId) ? d2Amount : nftIds.length; uint256 ethBounty = store.isD2Vault(vaultId) ? _calcBountyD2(vaultId, d2Amount, false) : _calcBounty(vaultId, amount, false); (uint256 ethBase, uint256 ethStep) = store.mintFees(vaultId); uint256 ethFee = _calcFee( amount, ethBase, ethStep, store.isD2Vault(vaultId) ); if (ethFee > ethBounty) { _receiveEthToVault(vaultId, ethFee.sub(ethBounty), msg.value); } if (store.isD2Vault(vaultId)) { _mintD2(vaultId, d2Amount); } else { _mint(vaultId, nftIds, false); } if (ethBounty > ethFee) { _payEthFromVault(vaultId, ethBounty.sub(ethFee), msg.sender); } emit Mint(vaultId, nftIds, d2Amount, msg.sender); } function redeem(uint256 vaultId, uint256 amount) public payable virtual nonReentrant { onlyOwnerIfPaused(2); if (!store.isClosed(vaultId)) { uint256 ethBounty = store.isD2Vault(vaultId) ? _calcBountyD2(vaultId, amount, true) : _calcBounty(vaultId, amount, true); (uint256 ethBase, uint256 ethStep) = store.burnFees(vaultId); uint256 ethFee = _calcFee( amount, ethBase, ethStep, store.isD2Vault(vaultId) ); if (ethBounty.add(ethFee) > 0) { _receiveEthToVault(vaultId, ethBounty.add(ethFee), msg.value); } } if (!store.isD2Vault(vaultId)) { _redeem(vaultId, amount, false); } else { _redeemD2(vaultId, amount); } } /* function mintAndRedeem(uint256 vaultId, uint256[] memory nftIds) public payable virtual nonReentrant { onlyOwnerIfPaused(3); require(!store.isD2Vault(vaultId), "Is D2 vault"); require(!store.isClosed(vaultId), "Vault is closed"); (uint256 ethBase, uint256 ethStep) = store.dualFees(vaultId); uint256 ethFee = _calcFee( nftIds.length, ethBase, ethStep, store.isD2Vault(vaultId) ); if (ethFee > 0) { _receiveEthToVault(vaultId, ethFee, msg.value); } _mint(vaultId, nftIds, true); _redeem(vaultId, nftIds.length, true); } */ function setIsEligible( uint256 vaultId, uint256[] memory nftIds, bool _boolean ) public virtual { onlyPrivileged(vaultId); for (uint256 i = 0; i < nftIds.length; i = i.add(1)) { store.setIsEligible(vaultId, nftIds[i], _boolean); } } function setAllowMintRequests(uint256 vaultId, bool isAllowed) public virtual { onlyPrivileged(vaultId); store.setAllowMintRequests(vaultId, isAllowed); } function setFlipEligOnRedeem(uint256 vaultId, bool flipElig) public virtual { onlyPrivileged(vaultId); store.setFlipEligOnRedeem(vaultId, flipElig); } function setNegateEligibility(uint256 vaultId, bool shouldNegate) public virtual { onlyPrivileged(vaultId); require( store .holdingsLength(vaultId) .add(store.reservesLength(vaultId)) .add(store.d2Holdings(vaultId)) == 0, "Vault not empty" ); store.setNegateEligibility(vaultId, shouldNegate); } /* function setShouldReserve( uint256 vaultId, uint256[] memory nftIds, bool _boolean ) public virtual { onlyPrivileged(vaultId); for (uint256 i = 0; i < nftIds.length; i.add(1)) { store.setShouldReserve(vaultId, nftIds[i], _boolean); } } */ /* function setIsReserved( uint256 vaultId, uint256[] memory nftIds, bool _boolean ) public virtual { onlyPrivileged(vaultId); for (uint256 i = 0; i < nftIds.length; i.add(1)) { uint256 nftId = nftIds[i]; if (_boolean) { require( store.holdingsContains(vaultId, nftId), "Invalid nftId" ); store.holdingsRemove(vaultId, nftId); store.reservesAdd(vaultId, nftId); } else { require( store.reservesContains(vaultId, nftId), "Invalid nftId" ); store.reservesRemove(vaultId, nftId); store.holdingsAdd(vaultId, nftId); } } } */ function changeTokenName(uint256 vaultId, string memory newName) public virtual { onlyPrivileged(vaultId); store.xToken(vaultId).changeName(newName); } function changeTokenSymbol(uint256 vaultId, string memory newSymbol) public virtual { onlyPrivileged(vaultId); store.xToken(vaultId).changeSymbol(newSymbol); } function setManager(uint256 vaultId, address newManager) public virtual { onlyPrivileged(vaultId); store.setManager(vaultId, newManager); } function finalizeVault(uint256 vaultId) public virtual { onlyPrivileged(vaultId); if (!store.isFinalized(vaultId)) { store.setIsFinalized(vaultId, true); } } function closeVault(uint256 vaultId) public virtual { onlyPrivileged(vaultId); if (!store.isFinalized(vaultId)) { store.setIsFinalized(vaultId, true); } store.setIsClosed(vaultId, true); } function setMintFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) public virtual { onlyPrivileged(vaultId); store.setMintFees(vaultId, _ethBase, _ethStep); } function setBurnFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) public virtual { onlyPrivileged(vaultId); store.setBurnFees(vaultId, _ethBase, _ethStep); } /* function setDualFees(uint256 vaultId, uint256 _ethBase, uint256 _ethStep) public virtual { onlyPrivileged(vaultId); store.setDualFees(vaultId, _ethBase, _ethStep); } */ function setSupplierBounty(uint256 vaultId, uint256 ethMax, uint256 length) public virtual { onlyPrivileged(vaultId); store.setSupplierBounty(vaultId, ethMax, length); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./NFTX.sol"; contract NFTXv2 is NFTX { function transferERC721(uint256 vaultId, uint256 tokenId, address to) public virtual onlyOwner { store.nft(vaultId).transferFrom(address(this), to, tokenId); } function createVault( address _xTokenAddress, address _assetAddress, bool _isD2Vault ) public virtual override nonReentrant returns (uint256) { if (_xTokenAddress != _assetAddress && _isD2Vault) { return 0; } return 0; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Context.sol"; import "./Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context, Initializable { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function initOwnable() internal virtual initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./SafeMath.sol"; contract Pausable is Ownable { mapping(uint256 => bool) isPaused; // 0 : createVault // 1 : mint // 2 : redeem // 3 : mintAndRedeem function onlyOwnerIfPaused(uint256 pauserId) public view virtual { require(!isPaused[pauserId] || msg.sender == owner(), "Paused"); } function setPaused(uint256 pauserId, bool _isPaused) public virtual onlyOwner { isPaused[pauserId] = _isPaused; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ contract ReentrancyGuard is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the revault on every call to nonReentrant will be lower in // amount. Since revaults 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 revault coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function initReentrancyGuard() internal { _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 make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a revault is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./IERC20.sol"; import "./SafeMath.sol"; import "./Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn( token, abi.encodeWithSelector(token.transfer.selector, to, value) ); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn( token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value) ); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn( token, abi.encodeWithSelector(token.approve.selector, spender, value) ); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add( value ); _callOptionalReturn( token, abi.encodeWithSelector( token.approve.selector, spender, newAllowance ) ); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub( value, "SafeERC20: decreased allowance below zero" ); _callOptionalReturn( token, abi.encodeWithSelector( token.approve.selector, spender, newAllowance ) ); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall( data, "SafeERC20: low-level call failed" ); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require( abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed" ); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev String operations. */ library Strings { /** * @dev Converts a `uint256` to its ASCII `string` representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = byte(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./SafeMath.sol"; contract TimeDelay is Ownable { using SafeMath for uint256; uint256 public shortDelay; uint256 public mediumDelay; uint256 public longDelay; function setDelays( uint256 _shortDelay, uint256 _mediumDelay, uint256 _longDelay ) internal virtual { shortDelay = _shortDelay; mediumDelay = _mediumDelay; longDelay = _longDelay; } function timeInDays(uint256 num) internal pure returns (uint256) { return num * 60 * 60 * 24; } function getDelay(uint256 delayIndex) public view returns (uint256) { if (delayIndex == 0) { return shortDelay; } else if (delayIndex == 1) { return mediumDelay; } else if (delayIndex == 2) { return longDelay; } } function onlyIfPastDelay(uint256 delayIndex, uint256 startTime) internal view { require(1 >= startTime.add(getDelay(delayIndex)), "Delay not over"); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./SafeMath.sol"; contract Timelocked is Ownable { using SafeMath for uint256; uint256 public shortDelay; uint256 public mediumDelay; uint256 public longDelay; function setDelays( uint256 _shortDelay, uint256 _mediumDelay, uint256 _longDelay ) internal virtual { shortDelay = _shortDelay; mediumDelay = _mediumDelay; longDelay = _longDelay; } function timeInDays(uint256 num) internal pure returns (uint256) { return num * 60 * 60 * 24; } function getDelay(uint256 delayIndex) public view returns (uint256) { if (delayIndex == 0) { return shortDelay; } else if (delayIndex == 1) { return mediumDelay; } else if (delayIndex == 2) { return longDelay; } } function onlyIfPastDelay(uint256 delayIndex, uint256 startTime) internal view { require(1 >= startTime.add(getDelay(delayIndex)), "Delay not over"); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./ITokenManager.sol"; contract TokenAppController is Ownable { ITokenManager public tokenManager; uint256 public num; constructor() public { initOwnable(); } function addXToNum(uint256 x) public returns (uint256) { num = num + x; return num; } function setTokenManager(address tokenManagerAddress) public onlyOwner { tokenManager = ITokenManager(tokenManagerAddress); } function callMint(address _receiver, uint256 _amount) public onlyOwner { tokenManager.mint(_receiver, _amount); } function callIssue(uint256 _amount) public onlyOwner { tokenManager.issue(_amount); } function callAssign(address _receiver, uint256 _amount) public onlyOwner { tokenManager.assign(_receiver, _amount); } function callBurn(address _holder, uint256 _amount) public onlyOwner { tokenManager.burn(_holder, _amount); } function callAssignVested( address _receiver, uint256 _amount, uint64 _start, uint64 _cliff, uint64 _vested, bool _revokable ) public returns (uint256) { return tokenManager.assignVested( _receiver, _amount, _start, _cliff, _vested, _revokable ); } function callRevokeVesting(address _holder, uint256 _vestingId) public onlyOwner { tokenManager.revokeVesting(_holder, _vestingId); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./ITransparentUpgradeableProxy.sol"; import "./ControllerBase.sol"; contract UpgradeController is ControllerBase { using SafeMath for uint256; ITransparentUpgradeableProxy private nftxProxy; ITransparentUpgradeableProxy private xControllerProxy; constructor(address nftx, address xController) public { ControllerBase.initialize(); nftxProxy = ITransparentUpgradeableProxy(nftx); xControllerProxy = ITransparentUpgradeableProxy(xController); } function executeFuncCall(uint256 fcId) public override onlyOwner { super.executeFuncCall(fcId); if (funcIndex[fcId] == 3) { nftxProxy.changeAdmin(addressParam[fcId]); } else if (funcIndex[fcId] == 4) { nftxProxy.upgradeTo(addressParam[fcId]); } else if (funcIndex[fcId] == 5) { xControllerProxy.changeAdmin(addressParam[fcId]); } else if (funcIndex[fcId] == 6) { xControllerProxy.upgradeTo(addressParam[fcId]); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./ControllerBase.sol"; import "./INFTX.sol"; import "./IXStore.sol"; import "./Initializable.sol"; contract XController is ControllerBase { INFTX private nftx; IXStore store; /* uint256 numFuncCalls; mapping(uint256 => uint256) public time; mapping(uint256 => uint256) public funcIndex; mapping(uint256 => address payable) public addressParam; mapping(uint256 => uint256[]) public uintArrayParam; */ mapping(uint256 => uint256) public uintParam; mapping(uint256 => string) public stringParam; mapping(uint256 => bool) public boolParam; mapping(uint256 => uint256) public pendingEligAdditions; function initXController(address nftxAddress) public initializer { initOwnable(); nftx = INFTX(nftxAddress); } function onlyOwnerOrLeadDev(uint256 funcIndex) public view virtual { if (funcIndex > 3) { require( _msgSender() == leadDev || _msgSender() == owner(), "Not owner or leadDev" ); } else { require(_msgSender() == owner(), "Not owner"); } } function stageFuncCall( uint256 _funcIndex, address payable _addressParam, uint256 _uintParam, string memory _stringParam, uint256[] memory _uintArrayParam, bool _boolParam ) public virtual { onlyOwnerOrLeadDev(_funcIndex); uint256 fcId = numFuncCalls; numFuncCalls = numFuncCalls.add(1); time[fcId] = 1; funcIndex[fcId] = _funcIndex; addressParam[fcId] = _addressParam; uintParam[fcId] = _uintParam; stringParam[fcId] = _stringParam; uintArrayParam[fcId] = _uintArrayParam; boolParam[fcId] = _boolParam; if ( funcIndex[fcId] == 4 && store.negateEligibility(uintParam[fcId]) != !boolParam[fcId] ) { pendingEligAdditions[uintParam[fcId]] = pendingEligAdditions[uintParam[fcId]] .add(uintArrayParam[fcId].length); } } function cancelFuncCall(uint256 fcId) public override virtual { onlyOwnerOrLeadDev(funcIndex[fcId]); require(funcIndex[fcId] != 0, "Already cancelled"); funcIndex[fcId] = 0; if ( funcIndex[fcId] == 3 && store.negateEligibility(uintParam[fcId]) != !boolParam[fcId] ) { pendingEligAdditions[uintParam[fcId]] = pendingEligAdditions[uintParam[fcId]] .sub(uintArrayParam[fcId].length); } } function executeFuncCall(uint256 fcId) public override virtual { super.executeFuncCall(fcId); if (funcIndex[fcId] == 3) { onlyIfPastDelay(2, time[fcId]); nftx.transferOwnership(addressParam[fcId]); } else if (funcIndex[fcId] == 4) { uint256 percentInc = pendingEligAdditions[uintParam[fcId]] .mul(100) .div(nftx.vaultSize(uintParam[fcId])); if (percentInc > 10) { onlyIfPastDelay(2, time[fcId]); } else if (percentInc > 1) { onlyIfPastDelay(1, time[fcId]); } else { onlyIfPastDelay(0, time[fcId]); } nftx.setIsEligible( uintParam[fcId], uintArrayParam[fcId], boolParam[fcId] ); pendingEligAdditions[uintParam[fcId]] = pendingEligAdditions[uintParam[fcId]] .sub(uintArrayParam[fcId].length); } else if (funcIndex[fcId] == 5) { onlyIfPastDelay(0, time[fcId]); // vault must be empty nftx.setNegateEligibility(funcIndex[fcId], boolParam[fcId]); } else if (funcIndex[fcId] == 6) { onlyIfPastDelay(0, time[fcId]); nftx.setShouldReserve( uintParam[fcId], uintArrayParam[fcId], boolParam[fcId] ); } else if (funcIndex[fcId] == 7) { onlyIfPastDelay(0, time[fcId]); nftx.setIsReserved( uintParam[fcId], uintArrayParam[fcId], boolParam[fcId] ); } else if (funcIndex[fcId] == 8) { onlyIfPastDelay(1, time[fcId]); nftx.changeTokenName(uintParam[fcId], stringParam[fcId]); } else if (funcIndex[fcId] == 9) { onlyIfPastDelay(1, time[fcId]); nftx.changeTokenSymbol(uintParam[fcId], stringParam[fcId]); } else if (funcIndex[fcId] == 10) { onlyIfPastDelay(0, time[fcId]); nftx.closeVault(uintParam[fcId]); } else if (funcIndex[fcId] == 11) { onlyIfPastDelay(0, time[fcId]); nftx.setMintFees( uintArrayParam[fcId][0], uintArrayParam[fcId][1], uintArrayParam[fcId][2] ); } else if (funcIndex[fcId] == 12) { (uint256 ethBase, uint256 ethStep) = store.burnFees( uintArrayParam[fcId][0] ); uint256 ethBasePercentInc = uintArrayParam[fcId][1].mul(100).div( ethBase ); uint256 ethStepPercentInc = uintArrayParam[fcId][2].mul(100).div( ethStep ); if (ethBasePercentInc.add(ethStepPercentInc) > 15) { onlyIfPastDelay(2, time[fcId]); } else if (ethBasePercentInc.add(ethStepPercentInc) > 5) { onlyIfPastDelay(1, time[fcId]); } else { onlyIfPastDelay(0, time[fcId]); } nftx.setBurnFees( uintArrayParam[fcId][0], uintArrayParam[fcId][1], uintArrayParam[fcId][2] ); } else if (funcIndex[fcId] == 13) { onlyIfPastDelay(0, time[fcId]); nftx.setDualFees( uintArrayParam[fcId][0], uintArrayParam[fcId][1], uintArrayParam[fcId][2] ); } else if (funcIndex[fcId] == 14) { (uint256 ethMax, uint256 length) = store.supplierBounty( uintArrayParam[fcId][0] ); uint256 ethMaxPercentInc = uintArrayParam[fcId][1].mul(100).div( ethMax ); uint256 lengthPercentInc = uintArrayParam[fcId][2].mul(100).div( length ); if (ethMaxPercentInc.add(lengthPercentInc) > 20) { onlyIfPastDelay(2, time[fcId]); } else if (ethMaxPercentInc.add(lengthPercentInc) > 5) { onlyIfPastDelay(1, time[fcId]); } else { onlyIfPastDelay(0, time[fcId]); } nftx.setSupplierBounty( uintArrayParam[fcId][0], uintArrayParam[fcId][1], uintArrayParam[fcId][2] ); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./SafeMath.sol"; import "./Pausable.sol"; import "./INFTX.sol"; import "./IXStore.sol"; import "./IERC721.sol"; import "./ITokenManager.sol"; import "./Context.sol"; import "./ReentrancyGuard.sol"; contract XSale is Pausable, ReentrancyGuard { using SafeMath for uint256; using EnumerableSet for EnumerableSet.UintSet; INFTX public nftx; IXStore public xStore; IERC20 public nftxToken; ITokenManager public tokenManager; uint64 public constant vestedUntil = 1610697600000; // Fri Jan 15 2021 00:00:00 GMT-0800 // Bounty[] public ethBounties; mapping(uint256 => Bounty[]) public xBounties; struct Bounty { uint256 reward; uint256 request; } constructor(address _nftx, address _nftxToken, address _tokenManager) public { initOwnable(); nftx = INFTX(_nftx); xStore = IXStore(nftx.store()); nftxToken = IERC20(_nftxToken); tokenManager = ITokenManager(_tokenManager); } function addXBounty(uint256 vaultId, uint256 reward, uint256 request) public onlyOwner { Bounty memory newXBounty; newXBounty.reward = reward; newXBounty.request = request; xBounties[vaultId].push(newXBounty); } function setXBounty( uint256 vaultId, uint256 xBountyIndex, uint256 newReward, uint256 newRequest ) public onlyOwner { Bounty storage xBounty = xBounties[vaultId][xBountyIndex]; xBounty.reward = newReward; xBounty.request = newRequest; } function withdrawNFTX(address to, uint256 amount) public onlyOwner { nftxToken.transfer(to, amount); } function withdrawXToken(uint256 vaultId, address to, uint256 amount) public onlyOwner { xStore.xToken(vaultId).transfer(to, amount); } function withdrawETH(address payable to, uint256 amount) public onlyOwner { to.transfer(amount); } function fillXBounty(uint256 vaultId, uint256 xBountyIndex, uint256 amount) public nonReentrant { Bounty storage xBounty = xBounties[vaultId][xBountyIndex]; require(amount <= xBounty.request, "Amount > bounty"); require( amount <= nftxToken.balanceOf(address(nftx)), "Amount > balance" ); xStore.xToken(vaultId).transferFrom( _msgSender(), address(nftx), amount ); uint256 reward = xBounty.reward.mul(amount).div(xBounty.request); xBounty.request = xBounty.request.sub(amount); xBounty.reward = xBounty.reward.sub(reward); nftxToken.transfer(address(tokenManager), reward); tokenManager.assignVested( _msgSender(), reward, vestedUntil, vestedUntil, vestedUntil, false ); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./EnumerableSet.sol"; import "./Ownable.sol"; import "./SafeMath.sol"; import "./IXToken.sol"; import "./IERC721.sol"; import "./SafeERC20.sol"; contract XStore is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; using EnumerableSet for EnumerableSet.UintSet; struct FeeParams { uint256 ethBase; uint256 ethStep; } struct BountyParams { uint256 ethMax; uint256 length; } struct Vault { address xTokenAddress; address nftAddress; address manager; IXToken xToken; IERC721 nft; EnumerableSet.UintSet holdings; EnumerableSet.UintSet reserves; mapping(uint256 => address) requester; mapping(uint256 => bool) isEligible; mapping(uint256 => bool) shouldReserve; bool allowMintRequests; bool flipEligOnRedeem; bool negateEligibility; bool isFinalized; bool isClosed; FeeParams mintFees; FeeParams burnFees; FeeParams dualFees; BountyParams supplierBounty; uint256 ethBalance; uint256 tokenBalance; bool isD2Vault; address d2AssetAddress; IERC20 d2Asset; uint256 d2Holdings; } event XTokenAddressSet(uint256 indexed vaultId, address token); event NftAddressSet(uint256 indexed vaultId, address asset); event ManagerSet(uint256 indexed vaultId, address manager); event XTokenSet(uint256 indexed vaultId); event NftSet(uint256 indexed vaultId); event HoldingsAdded(uint256 indexed vaultId, uint256 id); event HoldingsRemoved(uint256 indexed vaultId, uint256 id); event ReservesAdded(uint256 indexed vaultId, uint256 id); event ReservesRemoved(uint256 indexed vaultId, uint256 id); event RequesterSet(uint256 indexed vaultId, uint256 id, address requester); event IsEligibleSet(uint256 indexed vaultId, uint256 id, bool _bool); event ShouldReserveSet(uint256 indexed vaultId, uint256 id, bool _bool); event AllowMintRequestsSet(uint256 indexed vaultId, bool isAllowed); event FlipEligOnRedeemSet(uint256 indexed vaultId, bool _bool); event NegateEligibilitySet(uint256 indexed vaultId, bool _bool); event IsFinalizedSet(uint256 indexed vaultId, bool _isFinalized); event IsClosedSet(uint256 indexed vaultId, bool _isClosed); event MintFeesSet( uint256 indexed vaultId, uint256 ethBase, uint256 ethStep ); event BurnFeesSet( uint256 indexed vaultId, uint256 ethBase, uint256 ethStep ); event DualFeesSet( uint256 indexed vaultId, uint256 ethBase, uint256 ethStep ); event SupplierBountySet( uint256 indexed vaultId, uint256 ethMax, uint256 length ); event EthBalanceSet(uint256 indexed vaultId, uint256 _ethBalance); event TokenBalanceSet(uint256 indexed vaultId, uint256 _tokenBalance); event IsD2VaultSet(uint256 indexed vaultId, bool _isD2Vault); event D2AssetAddressSet(uint256 indexed vaultId, address _d2Asset); event D2AssetSet(uint256 indexed vaultId); event D2HoldingsSet(uint256 indexed vaultId, uint256 _d2Holdings); event NewVaultAdded(uint256 indexed vaultId); event IsExtensionSet(address addr, bool _isExtension); event RandNonceSet(uint256 _randNonce); Vault[] internal vaults; mapping(address => bool) public isExtension; uint256 public randNonce; constructor() public { initOwnable(); } function _getVault(uint256 vaultId) internal view returns (Vault storage) { require(vaultId < vaults.length, "Invalid vaultId"); return vaults[vaultId]; } function vaultsLength() public view returns (uint256) { return vaults.length; } function xTokenAddress(uint256 vaultId) public view returns (address) { Vault storage vault = _getVault(vaultId); return vault.xTokenAddress; } function nftAddress(uint256 vaultId) public view returns (address) { Vault storage vault = _getVault(vaultId); return vault.nftAddress; } function manager(uint256 vaultId) public view returns (address) { Vault storage vault = _getVault(vaultId); return vault.manager; } function xToken(uint256 vaultId) public view returns (IXToken) { Vault storage vault = _getVault(vaultId); return vault.xToken; } function nft(uint256 vaultId) public view returns (IERC721) { Vault storage vault = _getVault(vaultId); return vault.nft; } function holdingsLength(uint256 vaultId) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.holdings.length(); } function holdingsContains(uint256 vaultId, uint256 elem) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.holdings.contains(elem); } function holdingsAt(uint256 vaultId, uint256 index) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.holdings.at(index); } function reservesLength(uint256 vaultId) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.holdings.length(); } function reservesContains(uint256 vaultId, uint256 elem) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.holdings.contains(elem); } function reservesAt(uint256 vaultId, uint256 index) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.holdings.at(index); } function requester(uint256 vaultId, uint256 id) public view returns (address) { Vault storage vault = _getVault(vaultId); return vault.requester[id]; } function isEligible(uint256 vaultId, uint256 id) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.isEligible[id]; } function shouldReserve(uint256 vaultId, uint256 id) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.shouldReserve[id]; } function allowMintRequests(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.allowMintRequests; } function flipEligOnRedeem(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.flipEligOnRedeem; } function negateEligibility(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.negateEligibility; } function isFinalized(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.isFinalized; } function isClosed(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.isClosed; } function mintFees(uint256 vaultId) public view returns (uint256, uint256) { Vault storage vault = _getVault(vaultId); return (vault.mintFees.ethBase, vault.mintFees.ethStep); } function burnFees(uint256 vaultId) public view returns (uint256, uint256) { Vault storage vault = _getVault(vaultId); return (vault.burnFees.ethBase, vault.burnFees.ethStep); } function dualFees(uint256 vaultId) public view returns (uint256, uint256) { Vault storage vault = _getVault(vaultId); return (vault.dualFees.ethBase, vault.dualFees.ethStep); } function supplierBounty(uint256 vaultId) public view returns (uint256, uint256) { Vault storage vault = _getVault(vaultId); return (vault.supplierBounty.ethMax, vault.supplierBounty.length); } function ethBalance(uint256 vaultId) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.ethBalance; } function tokenBalance(uint256 vaultId) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.tokenBalance; } function isD2Vault(uint256 vaultId) public view returns (bool) { Vault storage vault = _getVault(vaultId); return vault.isD2Vault; } function d2AssetAddress(uint256 vaultId) public view returns (address) { Vault storage vault = _getVault(vaultId); return vault.d2AssetAddress; } function d2Asset(uint256 vaultId) public view returns (IERC20) { Vault storage vault = _getVault(vaultId); return vault.d2Asset; } function d2Holdings(uint256 vaultId) public view returns (uint256) { Vault storage vault = _getVault(vaultId); return vault.d2Holdings; } function setXTokenAddress(uint256 vaultId, address _xTokenAddress) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.xTokenAddress = _xTokenAddress; emit XTokenAddressSet(vaultId, _xTokenAddress); } function setNftAddress(uint256 vaultId, address _nft) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.nftAddress = _nft; emit NftAddressSet(vaultId, _nft); } function setManager(uint256 vaultId, address _manager) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.manager = _manager; emit ManagerSet(vaultId, _manager); } function setXToken(uint256 vaultId) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.xToken = IXToken(vault.xTokenAddress); emit XTokenSet(vaultId); } function setNft(uint256 vaultId) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.nft = IERC721(vault.nftAddress); emit NftSet(vaultId); } function holdingsAdd(uint256 vaultId, uint256 elem) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.holdings.add(elem); emit HoldingsAdded(vaultId, elem); } function holdingsRemove(uint256 vaultId, uint256 elem) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.holdings.remove(elem); emit HoldingsRemoved(vaultId, elem); } function reservesAdd(uint256 vaultId, uint256 elem) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.reserves.add(elem); emit ReservesAdded(vaultId, elem); } function reservesRemove(uint256 vaultId, uint256 elem) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.reserves.remove(elem); emit ReservesRemoved(vaultId, elem); } function setRequester(uint256 vaultId, uint256 id, address _requester) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.requester[id] = _requester; emit RequesterSet(vaultId, id, _requester); } function setIsEligible(uint256 vaultId, uint256 id, bool _bool) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.isEligible[id] = _bool; emit IsEligibleSet(vaultId, id, _bool); } function setShouldReserve(uint256 vaultId, uint256 id, bool _shouldReserve) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.shouldReserve[id] = _shouldReserve; emit ShouldReserveSet(vaultId, id, _shouldReserve); } function setAllowMintRequests(uint256 vaultId, bool isAllowed) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.allowMintRequests = isAllowed; emit AllowMintRequestsSet(vaultId, isAllowed); } function setFlipEligOnRedeem(uint256 vaultId, bool flipElig) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.flipEligOnRedeem = flipElig; emit FlipEligOnRedeemSet(vaultId, flipElig); } function setNegateEligibility(uint256 vaultId, bool negateElig) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.negateEligibility = negateElig; emit NegateEligibilitySet(vaultId, negateElig); } function setIsFinalized(uint256 vaultId, bool _isFinalized) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.isFinalized = _isFinalized; emit IsFinalizedSet(vaultId, _isFinalized); } function setIsClosed(uint256 vaultId, bool _isClosed) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.isClosed = _isClosed; emit IsClosedSet(vaultId, _isClosed); } function setMintFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.mintFees = FeeParams(ethBase, ethStep); emit MintFeesSet(vaultId, ethBase, ethStep); } function setBurnFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.burnFees = FeeParams(ethBase, ethStep); emit BurnFeesSet(vaultId, ethBase, ethStep); } function setDualFees(uint256 vaultId, uint256 ethBase, uint256 ethStep) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.dualFees = FeeParams(ethBase, ethStep); emit DualFeesSet(vaultId, ethBase, ethStep); } function setSupplierBounty(uint256 vaultId, uint256 ethMax, uint256 length) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.supplierBounty = BountyParams(ethMax, length); emit SupplierBountySet(vaultId, ethMax, length); } function setEthBalance(uint256 vaultId, uint256 _ethBalance) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.ethBalance = _ethBalance; emit EthBalanceSet(vaultId, _ethBalance); } function setTokenBalance(uint256 vaultId, uint256 _tokenBalance) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.tokenBalance = _tokenBalance; emit TokenBalanceSet(vaultId, _tokenBalance); } function setIsD2Vault(uint256 vaultId, bool _isD2Vault) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.isD2Vault = _isD2Vault; emit IsD2VaultSet(vaultId, _isD2Vault); } function setD2AssetAddress(uint256 vaultId, address _d2Asset) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.d2AssetAddress = _d2Asset; emit D2AssetAddressSet(vaultId, _d2Asset); } function setD2Asset(uint256 vaultId) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.d2Asset = IERC20(vault.d2AssetAddress); emit D2AssetSet(vaultId); } function setD2Holdings(uint256 vaultId, uint256 _d2Holdings) public onlyOwner { Vault storage vault = _getVault(vaultId); vault.d2Holdings = _d2Holdings; emit D2HoldingsSet(vaultId, _d2Holdings); } //////////////////////////////////////////////////////////// function addNewVault() public onlyOwner returns (uint256) { Vault memory newVault; vaults.push(newVault); uint256 vaultId = vaults.length.sub(1); emit NewVaultAdded(vaultId); return vaultId; } function setIsExtension(address addr, bool _isExtension) public onlyOwner { isExtension[addr] = _isExtension; emit IsExtensionSet(addr, _isExtension); } function setRandNonce(uint256 _randNonce) public onlyOwner { randNonce = _randNonce; emit RandNonceSet(_randNonce); } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.8; import "./Ownable.sol"; import "./Context.sol"; import "./ERC20.sol"; import "./ERC20Burnable.sol"; contract XToken is Context, Ownable, ERC20Burnable { constructor(string memory name, string memory symbol, address _owner) public ERC20(name, symbol) { initOwnable(); transferOwnership(_owner); _mint(msg.sender, 0); } function mint(address to, uint256 amount) public onlyOwner { _mint(to, amount); } function changeName(string memory name) public onlyOwner { _changeName(name); } function changeSymbol(string memory symbol) public onlyOwner { _changeSymbol(symbol); } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"nftx","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeProxyAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fetchImplAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImpl","type":"address"}],"name":"upgradeProxyTo","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000af93fcce0548d3124a5fc3045adaf1dde4e8bf7e
-----Decoded View---------------
Arg [0] : nftx (address): 0xAf93fCce0548D3124A5fC3045adAf1ddE4e8Bf7e
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000af93fcce0548d3124a5fc3045adaf1dde4e8bf7e
Deployed Bytecode Sourcemap
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Swarm Source
ipfs://8af801f7d51b569a736ee6975165e5c090aa5a66c489dd7b6e951c922822dbfe
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Multichain Portfolio | 31 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.