Transaction Hash:
Block:
14138987 at Feb-04-2022 10:34:31 AM +UTC
Transaction Fee:
0.024361884397413999 ETH
$90.81
Gas Used:
457,137 Gas / 53.292304927 Gwei
Emitted Events:
226 |
HuxleyComics.Transfer( from=0x00000000...000000000, to=[Sender] 0x3f32613fd7f10f47469e344de162d72e619fd94e, tokenId=14388 )
|
227 |
HuxleyComics.Transfer( from=0x00000000...000000000, to=[Sender] 0x3f32613fd7f10f47469e344de162d72e619fd94e, tokenId=14389 )
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228 |
HuxleyComicsOps.FundsTransfered( _wallet=0xe4588f51e8785700645d5624b6f21f79a19d0c17, _amount=170000000000000000 )
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229 |
HuxleyComicsOps.FundsTransfered( _wallet=0xeb3cfd3127d41ed7dcf4eb51f374c59dec0e6066, _amount=30000000000000000 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x3F32613F...e619fD94E |
0.332907137473987439 Eth
Nonce: 178
|
0.10854525307657344 Eth
Nonce: 179
| 0.224361884397413999 | ||
0x829BD824...93333A830
Miner
| (F2Pool Old) | 5,899.498184014974812776 Eth | 5,899.499326857474812776 Eth | 0.0011428425 | |
0x9Ca8887D...e2c97957f | |||||
0xd5c32400...3B3744baB | (HUXLEY Comics: Ops) | ||||
0xe4588f51...9A19d0c17 | 0.001402753522527 Eth | 0.171402753522527 Eth | 0.17 | ||
0xEb3cFd31...DEC0E6066 | 101.191182524352603053 Eth | 101.221182524352603053 Eth | 0.03 |
Execution Trace
ETH 0.2
HuxleyComicsOps.payableMintBatch( _amountToMint=2 )
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HuxleyComics.CALL( )
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HuxleyComics.CALL( )
-
HuxleyComics.CALL( )
-
HuxleyComics.CALL( )
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HuxleyComics.safeMint( to=0x3F32613Fd7f10F47469e344dE162d72e619fD94E ) => ( _tokenId=14388 )
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HuxleyComics.setTokenDetails( _tokenId=14388, _tokenType=0 )
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HuxleyComics.CALL( )
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HuxleyComics.CALL( )
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HuxleyComics.safeMint( to=0x3F32613Fd7f10F47469e344dE162d72e619fD94E ) => ( _tokenId=14389 )
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HuxleyComics.setTokenDetails( _tokenId=14389, _tokenType=0 )
- ETH 0.17
0xe4588f51e8785700645d5624b6f21f79a19d0c17.CALL( )
- ETH 0.03
0xeb3cfd3127d41ed7dcf4eb51f374c59dec0e6066.CALL( )
payableMintBatch[HuxleyComicsOps (ln:1268)]
getCurrentMaxPayableMintBatch[HuxleyComicsOps (ln:1271)]
getCurrentPrice[HuxleyComicsOps (ln:1274)]
_mint[HuxleyComicsOps (ln:1280)]
_privateMint[HuxleyComicsOps (ln:1334)]
getCurrentIssue[HuxleyComicsOps (ln:1343)]
getCurrentIssue[HuxleyComicsOps (ln:1347)]
safeMint[HuxleyComicsOps (ln:1351)]
setTokenDetails[HuxleyComicsOps (ln:1352)]
payment[HuxleyComicsOps (ln:1283)]
call[HuxleyComicsOps (ln:1290)]
FundsTransfered[HuxleyComicsOps (ln:1292)]
call[HuxleyComicsOps (ln:1295)]
FundsTransfered[HuxleyComicsOps (ln:1297)]
File 1 of 2: HuxleyComicsOps
File 2 of 2: HuxleyComics
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol pragma solidity ^0.8.0; /** * @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; } // File: contracts/interfaces/IHuxleyComics.sol pragma solidity 0.8.6; interface IHuxleyComics is IERC721 { struct Issue { uint256 price; uint256 goldSupplyLeft; uint256 firstEditionSupplyLeft; uint256 holographicSupplyLeft; uint256 serialNumberToMintGold; uint256 serialNumberToMintFirstEdition; uint256 serialNumberToMintHolographic; uint256 maxPayableMintBatch; string uri; bool exist; } struct Token { uint256 serialNumber; uint256 issueNumber; TokenType tokenType; } enum TokenType {FirstEdition, Gold, Holographic} function safeMint(address _to) external returns (uint256); function getCurrentIssue() external returns (uint256 _currentIssue); function getCurrentPrice() external returns (uint256 _currentPrice); function getCurrentMaxPayableMintBatch() external returns (uint256 _currentMaxPayableMintBatch); function createNewIssue( uint256 _price, uint256 _goldSupply, uint256 _firstEditionSupply, uint256 _holographicSupply, uint256 _startSerialNumberGold, uint256 _startSerialNumberFirstEdition, uint256 _startSerialNumberHolographic, uint256 _maxPaybleMintBatch, string memory _uri ) external; function getIssue(uint256 _issueNumber) external returns (Issue memory _issue); function getToken(uint256 _tokenId) external returns (Token memory _token); function setTokenDetails(uint256 _tokenId, TokenType _tokenType) external; function setBaseURI(uint256 _issueNumber, string memory _uri) external; function setCanBurn(bool _canBurn) external; } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/utils/Strings.sol pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/access/AccessControl.sol pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { function hasRole(bytes32 role, address account) external view returns (bool); function getRoleAdmin(bytes32 role) external view returns (bytes32); function grantRole(bytes32 role, address account) external; function revokeRole(bytes32 role, address account) external; function renounceRole(bytes32 role, address account) external; } /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/ */ function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, getRoleAdmin(role), adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } } // File: @openzeppelin/contracts/security/Pausable.sol pragma solidity ^0.8.0; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // File: @openzeppelin/contracts/utils/cryptography/ECDSA.sol pragma solidity ^0.8.0; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return recover(hash, r, vs); } else { revert("ECDSA: invalid signature length"); } } /** * @dev Overload of {ECDSA-recover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return recover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require( uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value" ); require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; 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 funds 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"); (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"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { 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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/interfaces/IERC1271.sol pragma solidity ^0.8.0; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. * * _Available since v4.1._ */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); } // File: @openzeppelin/contracts/utils/cryptography/SignatureChecker.sol pragma solidity ^0.8.0; /** * @dev Signature verification helper: Provide a single mechanism to verify both private-key (EOA) ECDSA signature and * ERC1271 contract sigantures. Using this instead of ECDSA.recover in your contract will make them compatible with * smart contract wallets such as Argent and Gnosis. * * Note: unlike ECDSA signatures, contract signature's are revocable, and the outcome of this function can thus change * through time. It could return true at block N and false at block N+1 (or the opposite). * * _Available since v4.1._ */ library SignatureChecker { function isValidSignatureNow( address signer, bytes32 hash, bytes memory signature ) internal view returns (bool) { if (Address.isContract(signer)) { try IERC1271(signer).isValidSignature(hash, signature) returns (bytes4 magicValue) { return magicValue == IERC1271(signer).isValidSignature.selector; } catch { return false; } } else { return ECDSA.recover(hash, signature) == signer; } } } // File: contracts/HuxleyComicsOps.sol pragma solidity 0.8.6; /** * @title HuxleyComicsOps * @dev This contract allows minting HuxleyComics tokens. * Users can pay to mint tokens when not paused. * */ contract HuxleyComicsOps is Pausable, AccessControl { using SignatureChecker for address; address public trustedWallet_A; address public trustedWallet_B; // address used to sign whitelisted addresses address public signer; // ER721 Huxley Comics Token IHuxleyComics public huxleyComics; // Mapping from blacklisted addresses mapping(address => bool) public blacklisted; // Mapping from address to amount of tokens purchased per issue number mapping(address => mapping(uint256 => uint256)) public purchased; // Role that can call createIssue(), setBaseURI(), privateMint...Batch() and setBlacklisted() bytes32 public constant OPERATIONS_ROLE = keccak256("OPERATIONS_ROLE"); event FundsTransfered(address _wallet, uint256 _amount); event IssueCreated(address _sender, uint256 _newIssue); event StartedBurn(address _sender); event StoppedBurn(address _sender); event IssueBaseURIUpdated(address _sender, string _uri); event FreeMintExecuted(address _sender); event FirstEditionMintExecuted(address _sender, uint256 _paid); /** * @dev Creates an instance of `HuxleyComicsOps`. * * 'msg.sender' gets the Admin role. '_trustedWallet_A' and '_trustedWallet_B' are wallets that will receive * funds. '_huxLeyComics' is the address of the HuxleyComics Token smart contract. * * Also sets contract to 'paused' state. */ constructor( address _operationAddress, address _trustedWallet_A, address _trustedWallet_B, address _huxLeyComics ) { _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); _setupRole(OPERATIONS_ROLE, _operationAddress); trustedWallet_A = _trustedWallet_A; trustedWallet_B = _trustedWallet_B; huxleyComics = IHuxleyComics(_huxLeyComics); signer = msg.sender; _pause(); } /** * @dev It creates a new Issue. Checks if contract is 'paused' and pauses it otherwise. * It calls 'createNewIssue' from the HuxleyComics contract. * Only an address with Operations Role can call this function. * * Emits a {IssueCreated} event. * * @param _price Price for each token to be minted in wei * @param _goldSupply Total supply of Gold token * @param _firstEditionSupply Total supply of First Edition token * @param _holographicSupply Total supply of Holographic token * @param _startSerialNumberGold Initial serial number for Gold token * @param _startSerialNumberFirstEdition Initial serial number for First Edition token * @param _startSerialNumberHolographic Initial serial number for Holographic token * @param _maxPayableMintBatch Max amount of tokens that can be minted when calling batch functions (should not be greater than 100 so it won't run out of gas) * @param _uri Uri for the tokens of the issue */ function createIssue( uint256 _price, uint256 _goldSupply, uint256 _firstEditionSupply, uint256 _holographicSupply, uint256 _startSerialNumberGold, uint256 _startSerialNumberFirstEdition, uint256 _startSerialNumberHolographic, uint256 _maxPayableMintBatch, string memory _uri ) external onlyRole(OPERATIONS_ROLE) { if (!paused()) { _pause(); } huxleyComics.createNewIssue( _price, _goldSupply, _firstEditionSupply, _holographicSupply, _startSerialNumberGold, _startSerialNumberFirstEdition, _startSerialNumberHolographic, _maxPayableMintBatch, _uri ); emit IssueCreated(msg.sender, huxleyComics.getCurrentIssue()); } /** * @dev Sets a new uri for an Issue. Only an address with Operations Role can call this function. * Emits a {IssueBaseURIUpdated} event. * @param _issueNumber issueNumber * @param _uri uri */ function setBaseURI(uint256 _issueNumber, string memory _uri) external onlyRole(OPERATIONS_ROLE) { huxleyComics.setBaseURI(_issueNumber, _uri); emit IssueBaseURIUpdated(msg.sender, _uri); } /** * @dev Mint a free token of type First Edition for Issue #1. Whitelisted addresses can free mint one token. * Emits a {FreeMintExecuted} event. * @param signature Message signed by 'signer' adddress to allow a wallet to free mint. */ function freeMint(bytes memory signature) external { require(huxleyComics.getCurrentIssue() == 1, "Huxley: not issue 1"); require(!blacklisted[msg.sender], "Huxley: blacklisted"); require(isWhitelisted(signature), "Huxley: not whtl"); require(isFirstToken(), "Huxley: not first"); _mint(IHuxleyComics.TokenType.FirstEdition, 1); emit FreeMintExecuted(msg.sender); } /// @dev Mint a FirstEdition token for a price /// Emits a {FirstEditionMintExecuted} event. function payableMint() external payable whenNotPaused { uint256 price = huxleyComics.getCurrentPrice(); require(price == msg.value, "Huxley: invalid price"); uint256 maxPayableMintBatch = huxleyComics.getCurrentMaxPayableMintBatch(); _mint(IHuxleyComics.TokenType.FirstEdition, maxPayableMintBatch); payment(); emit FirstEditionMintExecuted(msg.sender, msg.value); } /** * @dev Batch mint tokens for a price. Value should be equal to '_amountToMint1' x 'Issue.price'. * @param _amountToMint Amount of tokens to be minted. It should be greater than 0 and less or equal than 'Issue.maxPayableMintBatch' */ function payableMintBatch(uint256 _amountToMint) external payable whenNotPaused { require(_amountToMint > 0, "Huxley: batch is 0"); uint256 maxPayableMintBatch = huxleyComics.getCurrentMaxPayableMintBatch(); require(_amountToMint <= maxPayableMintBatch, "Huxley: max batch"); uint256 price = huxleyComics.getCurrentPrice(); price = price * _amountToMint; require(price == msg.value, "Huxley: invalid price"); for (uint256 i = 1; i <= _amountToMint; i++) { _mint(IHuxleyComics.TokenType.FirstEdition, maxPayableMintBatch); } payment(); } /// @dev Split value paid for a token /// Emits two {FundsTransfered} events. function payment() internal { uint256 amount = (msg.value * 85) / 100; (bool success, ) = trustedWallet_A.call{value: amount}(""); require(success, "HV: Transfer A failed"); emit FundsTransfered(trustedWallet_A, amount); amount = msg.value - amount; (success, ) = trustedWallet_B.call{value: amount}(""); require(success, "HV: Transfer B failed"); emit FundsTransfered(trustedWallet_B, amount); } /// @dev Allows team to mint FirstEdition token function privateMintFirstEditionBatch(uint256 _amountToMint) external onlyRole(OPERATIONS_ROLE) { privateMintBatch(_amountToMint, IHuxleyComics.TokenType.FirstEdition); } /// @dev Allows team to mint Gold token function privateMintGoldBatch(uint256 _amountToMint) external onlyRole(OPERATIONS_ROLE) { privateMintBatch(_amountToMint, IHuxleyComics.TokenType.Gold); } /// @dev Allows team to mint Holographic token function privateMintHolographicBatch(uint256 _amountToMint) external onlyRole(OPERATIONS_ROLE) { privateMintBatch(_amountToMint, IHuxleyComics.TokenType.Holographic); } /// @dev Batch mint tokens. It should not be greater than 100 to avoid running out of gas function privateMintBatch(uint256 _amountToMint, IHuxleyComics.TokenType _tokenType) internal { require(_amountToMint > 0, "Huxley: amount is 0"); for (uint256 i = 1; i <= _amountToMint; i++) { _privateMint(_tokenType, true, 0); } } /** * @dev Mints a token of an specific 'Token.Type'. It can be 'FirstEdition', 'Gold' or 'Holographic' * @param _tokenType Token Type that will be minted */ function _mint(IHuxleyComics.TokenType _tokenType, uint256 _maxAmount) internal { _privateMint(_tokenType, false, _maxAmount); } /** * @dev Mints a token of a specific 'Token.Type'. It can be 'FirstEdition', 'Gold' or ' 'Holographic' * @param _tokenType Token Type that will be minted */ function _privateMint(IHuxleyComics.TokenType _tokenType, bool _isPrivateMint, uint256 _maxAmount) internal { if(!_isPrivateMint){ uint256 totalTokenspurchased = purchased[msg.sender][huxleyComics.getCurrentIssue()]; require(totalTokenspurchased < _maxAmount, "Huxley: over max amount"); // update total amount of tokens purchased for current issue purchased[msg.sender][huxleyComics.getCurrentIssue()] = totalTokenspurchased + 1; } // mint and get token id uint256 tokenId = huxleyComics.safeMint(msg.sender); huxleyComics.setTokenDetails(tokenId, _tokenType); } // Setup functions /** * @dev Updates address of 'trustedWallet_A' * @param _trustedWallet New address for 'trustedWallet_A' */ function setTrustedWallet_A(address _trustedWallet) external onlyRole(DEFAULT_ADMIN_ROLE) { trustedWallet_A = _trustedWallet; } /** * @dev Updates address of 'trustedWallet_B' * @param _trustedWallet New address for 'trustedWallet_B' */ function setTrustedWallet_B(address _trustedWallet) external onlyRole(DEFAULT_ADMIN_ROLE) { trustedWallet_B = _trustedWallet; } /** * @dev Updates address of 'signer' * @param _signer New address for 'signer' */ function setSigner(address _signer) external onlyRole(DEFAULT_ADMIN_ROLE) { signer = _signer; } /// @dev Returns if user already has a token function isFirstToken() internal view returns (bool) { uint256 balance = huxleyComics.balanceOf(msg.sender); return balance == 0; } /// @dev Returns if user is whitelisted to free mint 1 token. function isWhitelisted(bytes memory signature) internal view returns (bool) { bytes32 result = keccak256(abi.encodePacked(msg.sender)); bytes32 hash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", result)); return signer.isValidSignatureNow(hash, signature); } /** * @dev Sets if an address is blacklist or not * @param _addr Address to update in the blacklist list * @param _value Use 'True' to blacklist '_addr', 'False' otherwise */ function setBlacklisted(address _addr, bool _value) external onlyRole(OPERATIONS_ROLE) { blacklisted[_addr] = _value; } /// @dev Pause payableMint() function pause() external onlyRole(DEFAULT_ADMIN_ROLE) { _pause(); } /// @dev Unpause payableMint() function unpause() external onlyRole(DEFAULT_ADMIN_ROLE) { _unpause(); } /// @dev Start the possibility to burn tokens /// Emits {StartedBurn} event. function startBurn() external onlyRole(DEFAULT_ADMIN_ROLE) { huxleyComics.setCanBurn(true); emit StartedBurn(msg.sender); } /// @dev Stop the possibility to burn tokens /// Emits {StoppedBurn} event. function stopBurn() external onlyRole(DEFAULT_ADMIN_ROLE) { huxleyComics.setCanBurn(false); emit StoppedBurn(msg.sender); } // End Burn Requirement }
File 2 of 2: HuxleyComics
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol pragma solidity ^0.8.0; /** * @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; } // File: contracts/interfaces/IHuxleyComics.sol pragma solidity 0.8.6; interface IHuxleyComics is IERC721 { struct Issue { uint256 price; uint256 goldSupplyLeft; uint256 firstEditionSupplyLeft; uint256 holographicSupplyLeft; uint256 serialNumberToMintGold; uint256 serialNumberToMintFirstEdition; uint256 serialNumberToMintHolographic; uint256 maxPayableMintBatch; string uri; bool exist; } struct Token { uint256 serialNumber; uint256 issueNumber; TokenType tokenType; } enum TokenType {FirstEdition, Gold, Holographic} function safeMint(address _to) external returns (uint256); function getCurrentIssue() external returns (uint256 _currentIssue); function getCurrentPrice() external returns (uint256 _currentPrice); function getCurrentMaxPayableMintBatch() external returns (uint256 _currentMaxPayableMintBatch); function createNewIssue( uint256 _price, uint256 _goldSupply, uint256 _firstEditionSupply, uint256 _holographicSupply, uint256 _startSerialNumberGold, uint256 _startSerialNumberFirstEdition, uint256 _startSerialNumberHolographic, uint256 _maxPaybleMintBatch, string memory _uri ) external; function getIssue(uint256 _issueNumber) external returns (Issue memory _issue); function getToken(uint256 _tokenId) external returns (Token memory _token); function setTokenDetails(uint256 _tokenId, TokenType _tokenType) external; function setBaseURI(uint256 _issueNumber, string memory _uri) external; function setCanBurn(bool _canBurn) external; } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol pragma solidity ^0.8.0; /** * @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. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual 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 { _setOwner(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"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol pragma solidity ^0.8.0; /** * @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); } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol pragma solidity ^0.8.0; /** * @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); } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; 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 funds 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"); (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"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { 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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/utils/Strings.sol pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/token/ERC721/ERC721.sol pragma solidity ^0.8.0; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // 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; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.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 virtual 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 virtual 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 virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `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, ""); } /** * @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); _balances[to] += 1; _owners[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 = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[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(ERC721.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); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @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()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @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` 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 tokenId ) internal virtual {} } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol pragma solidity ^0.8.0; /** * @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); } // File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol pragma solidity ^0.8.0; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @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 override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // File: @openzeppelin/contracts/security/ReentrancyGuard.sol pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and 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 refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // File: contracts/HuxleyComics.sol pragma solidity 0.8.6; contract HuxleyComics is ERC721Enumerable, IHuxleyComics, ReentrancyGuard, Ownable { using Strings for uint256; // address of the HuxleyComicsOps contract that can mint tokens address public minter; // control if tokens can be burned or not. Default is false bool public canBurn; // Last token id minted uint256 public tokenId; //Issue being minted uint256 private currentIssue; //Price of token to be minted uint256 private currentPrice; //Max amount of tokens that can be mined from current issue uint256 private currentMaxPayableMintBatch; // mapping of Issues - issue number -> Isssue mapping(uint256 => Issue) private issues; // mapping of redemptions - tokenId -> true/false mapping(uint256 => bool) public redemptions; // mapping of Tokens - tokenId -> Token mapping(uint256 => Token) private tokens; /** * @dev Modifier that checks that address is minter. Reverts * if sender is not the minter */ modifier onlyMinter() { require(msg.sender == minter, "HT: Only minter"); _; } /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token. */ constructor() ERC721("HUXLEY Comics", "HUXLEY") {} /** * @dev Safely mints a token. Increments 'tokenId' by 1 and calls super._safeMint() * * @param to Address that will be the owner of the token */ function safeMint(address to) external override onlyMinter() nonReentrant returns (uint256 _tokenId) { tokenId++; super._safeMint(to, tokenId); return tokenId; } /** * @dev Burns a token. Can only be called by token Owner * * @param _tokenId Token that will be burned */ function burn(uint256 _tokenId) external { require(canBurn, "HT: is not burnable"); require(ownerOf(_tokenId) == msg.sender, "HT: Not owner"); super._burn(_tokenId); } /** * @dev It creates a new Issue. Only 'minter' can call this function. * * @param _price Price for each token to be minted in wei * @param _goldSupply Total supply of Gold token * @param _firstEditionSupply Total supply of First Edition token * @param _holographicSupply Total supply of Holographic token * @param _startSerialNumberGold Initial serial number for Gold token * @param _startSerialNumberFirstEdition Initial serial number for First Edition token * @param _startSerialNumberHolographic Initial serial number for Holographic token * @param _maxPayableMintBatch Max amount of tokens that can be minted when calling batch functions (should not be greater than 100 so it won't run out of gas) * @param _uri Uri for the tokens of the issue */ function createNewIssue( uint256 _price, uint256 _goldSupply, uint256 _firstEditionSupply, uint256 _holographicSupply, uint256 _startSerialNumberGold, uint256 _startSerialNumberFirstEdition, uint256 _startSerialNumberHolographic, uint256 _maxPayableMintBatch, string memory _uri ) external override onlyMinter { currentIssue = currentIssue + 1; currentPrice = _price; currentMaxPayableMintBatch = _maxPayableMintBatch; Issue storage issue = issues[currentIssue]; issue.price = _price; issue.goldSupplyLeft = _goldSupply; issue.firstEditionSupplyLeft = _firstEditionSupply; issue.holographicSupplyLeft = _holographicSupply; issue.serialNumberToMintGold = _startSerialNumberGold; issue.serialNumberToMintFirstEdition = _startSerialNumberFirstEdition; issue.serialNumberToMintHolographic = _startSerialNumberHolographic; issue.maxPayableMintBatch = _maxPayableMintBatch; issue.uri = _uri; issue.exist = true; } /** * @dev Returns whether `issueNumber` exists. * * Issue can be created via {createNewIssue}. * */ function _issueExists(uint256 _issueNumber) internal view virtual returns (bool) { return issues[_issueNumber].exist ? true : false; } /** * @dev It sets details for the token. It sets the issue number, serial number and token type. * It also updates supply left of the token. * * Emits a {IssueCreated} event. * * @param _tokenId tokenID * @param _tokenType tokenType */ function setTokenDetails(uint256 _tokenId, TokenType _tokenType) external override onlyMinter { Token storage token = tokens[_tokenId]; token.issueNumber = currentIssue; Issue storage issue = issues[currentIssue]; // can mint Gold, FirstEdition and Holographic if (_tokenType == TokenType.Gold) { uint256 goldSupplyLeft = issue.goldSupplyLeft; require(goldSupplyLeft > 0, "HT: no gold"); issue.goldSupplyLeft = goldSupplyLeft - 1; uint256 serialNumberGold = issue.serialNumberToMintGold; issue.serialNumberToMintGold = serialNumberGold + 1; //next mint token.tokenType = TokenType.Gold; token.serialNumber = serialNumberGold; } else if (_tokenType == TokenType.FirstEdition) { uint256 firstEditionSupplyLeft = issue.firstEditionSupplyLeft; require(firstEditionSupplyLeft > 0, "HT: no firstEdition"); issue.firstEditionSupplyLeft = firstEditionSupplyLeft - 1; uint256 serialNumberFirstEdition = issue.serialNumberToMintFirstEdition; issue.serialNumberToMintFirstEdition = serialNumberFirstEdition + 1; //next mint token.tokenType = TokenType.FirstEdition; token.serialNumber = serialNumberFirstEdition; } else if (_tokenType == TokenType.Holographic) { uint256 holographicSupplyLeft = issue.holographicSupplyLeft; require(holographicSupplyLeft > 0, "HT: no holographic"); issue.holographicSupplyLeft = holographicSupplyLeft - 1; uint256 serialNumberHolographic = issue.serialNumberToMintHolographic; issue.serialNumberToMintHolographic = serialNumberHolographic + 1; //next mint token.tokenType = TokenType.Holographic; token.serialNumber = serialNumberHolographic; } else { revert(); } } /// @dev Returns URI for the token. Each Issue number has a base uri. function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) { require(_exists(_tokenId), "UT: invalid token"); Token memory token = tokens[_tokenId]; uint256 issueNumber = token.issueNumber; require(issueNumber > 0, "HT: invalid issue"); Issue memory issue = issues[issueNumber]; string memory baseURI = issue.uri; return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, _tokenId.toString())) : ""; } /** * @dev Sets URI for an Issue. * * Issue can be created via {createNewIssue} by the Minter. * */ function setBaseURI(uint256 _issueNumber, string memory _uri) external override onlyMinter { require(_issueExists(_issueNumber), "UT: invalid issue"); Issue storage issue = issues[_issueNumber]; issue.uri = _uri; } /// @dev Returns Issue that can be minted. function getCurrentIssue() external view override returns (uint256 _currentIssue) { return currentIssue; } /// @dev Returns Price of token that can be minted. function getCurrentPrice() external view override returns (uint256 _currentPrice) { return currentPrice; } /// @dev Returns Max Amount of First Edition tokens an address can pay to mint. function getCurrentMaxPayableMintBatch() external view override returns (uint256 _currentMaxaPaybleMintBatch) { return currentMaxPayableMintBatch; } /** * @dev Returns details of an Issue: 'price', 'goldSupplyLeft', 'firstEditionSupplyLeft, * 'holographicSupplyLeft', 'serialNumberToMintGold', 'serialNumberToMintFirstEdition', * 'serialNumberToMintHolographic', 'MaxPayableMintBatch', 'uri' and 'exist'. * */ function getIssue(uint256 _issueNumber) external view override returns (Issue memory _issue) { return issues[_issueNumber]; } /// @dev Returns token details: 'serialNumber', 'issueNumber' and 'TokenType' function getToken(uint256 _tokenId) external view override returns (Token memory _token) { return tokens[_tokenId]; } /// @dev User can redeem a copy function redeemCopy(uint256 _tokenId) external { require(ownerOf(_tokenId) == msg.sender, "HT: Not owner"); require(redemptions[_tokenId] == false, "HT: already redeemed"); redemptions[_tokenId] = true; } // Setup functions /// @dev Sets new minter address. Only Owner can call this function. function updateMinter(address _minter) external onlyOwner { minter = _minter; } /// @dev Sets if it is allowed to burn tokens. Default is 'false'. Only Minter can call this function. function setCanBurn(bool _canBurn) external override onlyMinter { canBurn = _canBurn; } // End setup functions }