File size: 133,290 Bytes
f998fcd |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 |
{
"language": "Solidity",
"sources": {
"lib/base64/base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.6.0;\n\n/// @title Base64\n/// @author Brecht Devos - <[email protected]>\n/// @notice Provides functions for encoding/decoding base64\nlibrary Base64 {\n string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n bytes internal constant TABLE_DECODE = hex\"0000000000000000000000000000000000000000000000000000000000000000\"\n hex\"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000\"\n hex\"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000\"\n hex\"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000\";\n\n function encode(bytes memory data) internal pure returns (string memory) {\n if (data.length == 0) return '';\n\n // load the table into memory\n string memory table = TABLE_ENCODE;\n\n // multiply by 4/3 rounded up\n uint256 encodedLen = 4 * ((data.length + 2) / 3);\n\n // add some extra buffer at the end required for the writing\n string memory result = new string(encodedLen + 32);\n\n assembly {\n // set the actual output length\n mstore(result, encodedLen)\n\n // prepare the lookup table\n let tablePtr := add(table, 1)\n\n // input ptr\n let dataPtr := data\n let endPtr := add(dataPtr, mload(data))\n\n // result ptr, jump over length\n let resultPtr := add(result, 32)\n\n // run over the input, 3 bytes at a time\n for {} lt(dataPtr, endPtr) {}\n {\n // read 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // write 4 characters\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and( input, 0x3F))))\n resultPtr := add(resultPtr, 1)\n }\n\n // padding with '='\n switch mod(mload(data), 3)\n case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }\n case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }\n }\n\n return result;\n }\n\n function decode(string memory _data) internal pure returns (bytes memory) {\n bytes memory data = bytes(_data);\n\n if (data.length == 0) return new bytes(0);\n require(data.length % 4 == 0, \"invalid base64 decoder input\");\n\n // load the table into memory\n bytes memory table = TABLE_DECODE;\n\n // every 4 characters represent 3 bytes\n uint256 decodedLen = (data.length / 4) * 3;\n\n // add some extra buffer at the end required for the writing\n bytes memory result = new bytes(decodedLen + 32);\n\n assembly {\n // padding with '='\n let lastBytes := mload(add(data, mload(data)))\n if eq(and(lastBytes, 0xFF), 0x3d) {\n decodedLen := sub(decodedLen, 1)\n if eq(and(lastBytes, 0xFFFF), 0x3d3d) {\n decodedLen := sub(decodedLen, 1)\n }\n }\n\n // set the actual output length\n mstore(result, decodedLen)\n\n // prepare the lookup table\n let tablePtr := add(table, 1)\n\n // input ptr\n let dataPtr := data\n let endPtr := add(dataPtr, mload(data))\n\n // result ptr, jump over length\n let resultPtr := add(result, 32)\n\n // run over the input, 4 characters at a time\n for {} lt(dataPtr, endPtr) {}\n {\n // read 4 characters\n dataPtr := add(dataPtr, 4)\n let input := mload(dataPtr)\n\n // write 3 bytes\n let output := add(\n add(\n shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)),\n shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))),\n add(\n shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)),\n and(mload(add(tablePtr, and( input , 0xFF))), 0xFF)\n )\n )\n mstore(resultPtr, shl(232, output))\n resultPtr := add(resultPtr, 3)\n }\n }\n\n return result;\n }\n}\n"
},
"lib/ethfs/packages/contracts/src/File.sol": {
"content": "// SPDX-License-Identifier: Unlicense\npragma solidity ^0.8.13;\n\nstruct Content {\n bytes32 checksum;\n address pointer;\n}\n\nstruct File {\n uint256 size; // content length in bytes, max 24k\n Content[] contents;\n}\n\nfunction read(File memory file) view returns (string memory contents) {\n Content[] memory chunks = file.contents;\n\n // Adapted from https://gist.github.com/xtremetom/20411eb126aaf35f98c8a8ffa00123cd\n assembly {\n let len := mload(chunks)\n let totalSize := 0x20\n contents := mload(0x40)\n let size\n let chunk\n let pointer\n\n // loop through all pointer addresses\n // - get content\n // - get address\n // - get data size\n // - get code and add to contents\n // - update total size\n\n for { let i := 0 } lt(i, len) { i := add(i, 1) } {\n chunk := mload(add(chunks, add(0x20, mul(i, 0x20))))\n pointer := mload(add(chunk, 0x20))\n\n size := sub(extcodesize(pointer), 1)\n extcodecopy(pointer, add(contents, totalSize), 1, size)\n totalSize := add(totalSize, size)\n }\n\n // update contents size\n mstore(contents, sub(totalSize, 0x20))\n // store contents\n mstore(0x40, add(contents, and(add(totalSize, 0x1f), not(0x1f))))\n }\n}\n\nusing {\n read\n} for File global;\n"
},
"lib/ethfs/packages/contracts/src/IContentStore.sol": {
"content": "// SPDX-License-Identifier: Unlicense\npragma solidity ^0.8.13;\n\ninterface IContentStore {\n event NewChecksum(bytes32 indexed checksum, uint256 contentSize);\n\n error ChecksumExists(bytes32 checksum);\n error ChecksumNotFound(bytes32 checksum);\n\n function pointers(bytes32 checksum) external view returns (address pointer);\n\n function checksumExists(bytes32 checksum) external view returns (bool);\n\n function contentLength(bytes32 checksum)\n external\n view\n returns (uint256 size);\n\n function addPointer(address pointer) external returns (bytes32 checksum);\n\n function addContent(bytes memory content)\n external\n returns (bytes32 checksum, address pointer);\n\n function getPointer(bytes32 checksum)\n external\n view\n returns (address pointer);\n}\n"
},
"lib/ethfs/packages/contracts/src/IFileStore.sol": {
"content": "// SPDX-License-Identifier: Unlicense\npragma solidity ^0.8.13;\n\nimport {File} from \"./File.sol\";\nimport {IContentStore} from \"./IContentStore.sol\";\n\ninterface IFileStore {\n event FileCreated(\n string indexed indexedFilename,\n bytes32 indexed checksum,\n string filename,\n uint256 size,\n bytes metadata\n );\n event FileDeleted(\n string indexed indexedFilename,\n bytes32 indexed checksum,\n string filename\n );\n\n error FileNotFound(string filename);\n error FilenameExists(string filename);\n error EmptyFile();\n\n function contentStore() external view returns (IContentStore);\n\n function files(string memory filename)\n external\n view\n returns (bytes32 checksum);\n\n function fileExists(string memory filename) external view returns (bool);\n\n function getChecksum(string memory filename)\n external\n view\n returns (bytes32 checksum);\n\n function getFile(string memory filename)\n external\n view\n returns (File memory file);\n\n function createFile(string memory filename, bytes32[] memory checksums)\n external\n returns (File memory file);\n\n function createFile(\n string memory filename,\n bytes32[] memory checksums,\n bytes memory extraData\n ) external returns (File memory file);\n\n function deleteFile(string memory filename) external;\n}\n"
},
"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC1822.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified\n * proxy whose upgrades are fully controlled by the current implementation.\n */\ninterface IERC1822Proxiable {\n /**\n * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation\n * address.\n *\n * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks\n * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this\n * function revert if invoked through a proxy.\n */\n function proxiableUUID() external view returns (bytes32);\n}\n"
},
"lib/openzeppelin-contracts/contracts/proxy/Proxy.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM\n * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to\n * be specified by overriding the virtual {_implementation} function.\n *\n * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a\n * different contract through the {_delegate} function.\n *\n * The success and return data of the delegated call will be returned back to the caller of the proxy.\n */\nabstract contract Proxy {\n /**\n * @dev Delegates the current call to `implementation`.\n *\n * This function does not return to its internal call site, it will return directly to the external caller.\n */\n function _delegate(address implementation) internal virtual {\n assembly {\n // Copy msg.data. We take full control of memory in this inline assembly\n // block because it will not return to Solidity code. We overwrite the\n // Solidity scratch pad at memory position 0.\n calldatacopy(0, 0, calldatasize())\n\n // Call the implementation.\n // out and outsize are 0 because we don't know the size yet.\n let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)\n\n // Copy the returned data.\n returndatacopy(0, 0, returndatasize())\n\n switch result\n // delegatecall returns 0 on error.\n case 0 {\n revert(0, returndatasize())\n }\n default {\n return(0, returndatasize())\n }\n }\n }\n\n /**\n * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function\n * and {_fallback} should delegate.\n */\n function _implementation() internal view virtual returns (address);\n\n /**\n * @dev Delegates the current call to the address returned by `_implementation()`.\n *\n * This function does not return to its internal call site, it will return directly to the external caller.\n */\n function _fallback() internal virtual {\n _beforeFallback();\n _delegate(_implementation());\n }\n\n /**\n * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other\n * function in the contract matches the call data.\n */\n fallback() external payable virtual {\n _fallback();\n }\n\n /**\n * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data\n * is empty.\n */\n receive() external payable virtual {\n _fallback();\n }\n\n /**\n * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`\n * call, or as part of the Solidity `fallback` or `receive` functions.\n *\n * If overridden should call `super._beforeFallback()`.\n */\n function _beforeFallback() internal virtual {}\n}\n"
},
"lib/openzeppelin-contracts/contracts/utils/StorageSlot.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Library for reading and writing primitive types to specific storage slots.\n *\n * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.\n * This library helps with reading and writing to such slots without the need for inline assembly.\n *\n * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.\n *\n * Example usage to set ERC1967 implementation slot:\n * ```\n * contract ERC1967 {\n * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\n *\n * function _getImplementation() internal view returns (address) {\n * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;\n * }\n *\n * function _setImplementation(address newImplementation) internal {\n * require(Address.isContract(newImplementation), \"ERC1967: new implementation is not a contract\");\n * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;\n * }\n * }\n * ```\n *\n * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._\n */\nlibrary StorageSlot {\n struct AddressSlot {\n address value;\n }\n\n struct BooleanSlot {\n bool value;\n }\n\n struct Bytes32Slot {\n bytes32 value;\n }\n\n struct Uint256Slot {\n uint256 value;\n }\n\n /**\n * @dev Returns an `AddressSlot` with member `value` located at `slot`.\n */\n function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {\n /// @solidity memory-safe-assembly\n assembly {\n r.slot := slot\n }\n }\n\n /**\n * @dev Returns an `BooleanSlot` with member `value` located at `slot`.\n */\n function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {\n /// @solidity memory-safe-assembly\n assembly {\n r.slot := slot\n }\n }\n\n /**\n * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.\n */\n function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {\n /// @solidity memory-safe-assembly\n assembly {\n r.slot := slot\n }\n }\n\n /**\n * @dev Returns an `Uint256Slot` with member `value` located at `slot`.\n */\n function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {\n /// @solidity memory-safe-assembly\n assembly {\n r.slot := slot\n }\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/access/Ownable2StepUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./OwnableUpgradeable.sol\";\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module which provides access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership} and {acceptOwnership}.\n *\n * This module is used through inheritance. It will make available all functions\n * from parent (Ownable).\n */\nabstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {\n function __Ownable2Step_init() internal onlyInitializing {\n __Ownable_init_unchained();\n }\n\n function __Ownable2Step_init_unchained() internal onlyInitializing {\n }\n address private _pendingOwner;\n\n event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Returns the address of the pending owner.\n */\n function pendingOwner() public view virtual returns (address) {\n return _pendingOwner;\n }\n\n /**\n * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual override onlyOwner {\n _pendingOwner = newOwner;\n emit OwnershipTransferStarted(owner(), newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual override {\n delete _pendingOwner;\n super._transferOwnership(newOwner);\n }\n\n /**\n * @dev The new owner accepts the ownership transfer.\n */\n function acceptOwnership() external {\n address sender = _msgSender();\n require(pendingOwner() == sender, \"Ownable2Step: caller is not the new owner\");\n _transferOwnership(sender);\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/access/OwnableUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n function __Ownable_init() internal onlyInitializing {\n __Ownable_init_unchained();\n }\n\n function __Ownable_init_unchained() internal onlyInitializing {\n _transferOwnership(_msgSender());\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n _checkOwner();\n _;\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if the sender is not the owner.\n */\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * contract MyToken is ERC20Upgradeable {\n * function initialize() initializer public {\n * __ERC20_init(\"MyToken\", \"MTK\");\n * }\n * }\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n * function initializeV2() reinitializer(2) public {\n * __ERC20Permit_init(\"MyToken\");\n * }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n * _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n * @custom:oz-retyped-from bool\n */\n uint8 private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Triggered when the contract has been initialized or reinitialized.\n */\n event Initialized(uint8 version);\n\n /**\n * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n * `onlyInitializing` functions can be used to initialize parent contracts.\n *\n * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a\n * constructor.\n *\n * Emits an {Initialized} event.\n */\n modifier initializer() {\n bool isTopLevelCall = !_initializing;\n require(\n (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n \"Initializable: contract is already initialized\"\n );\n _initialized = 1;\n if (isTopLevelCall) {\n _initializing = true;\n }\n _;\n if (isTopLevelCall) {\n _initializing = false;\n emit Initialized(1);\n }\n }\n\n /**\n * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n * used to initialize parent contracts.\n *\n * A reinitializer may be used after the original initialization step. This is essential to configure modules that\n * are added through upgrades and that require initialization.\n *\n * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`\n * cannot be nested. If one is invoked in the context of another, execution will revert.\n *\n * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n * a contract, executing them in the right order is up to the developer or operator.\n *\n * WARNING: setting the version to 255 will prevent any future reinitialization.\n *\n * Emits an {Initialized} event.\n */\n modifier reinitializer(uint8 version) {\n require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n _initialized = version;\n _initializing = true;\n _;\n _initializing = false;\n emit Initialized(version);\n }\n\n /**\n * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n * {initializer} and {reinitializer} modifiers, directly or indirectly.\n */\n modifier onlyInitializing() {\n require(_initializing, \"Initializable: contract is not initializing\");\n _;\n }\n\n /**\n * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n * through proxies.\n *\n * Emits an {Initialized} event the first time it is successfully executed.\n */\n function _disableInitializers() internal virtual {\n require(!_initializing, \"Initializable: contract is initializing\");\n if (_initialized != type(uint8).max) {\n _initialized = type(uint8).max;\n emit Initialized(type(uint8).max);\n }\n }\n\n /**\n * @dev Internal function that returns the initialized version. Returns `_initialized`\n */\n function _getInitializedVersion() internal view returns (uint8) {\n return _initialized;\n }\n\n /**\n * @dev Internal function that returns the initialized version. Returns `_initializing`\n */\n function _isInitializing() internal view returns (bool) {\n return _initializing;\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/security/ReentrancyGuardUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuardUpgradeable is Initializable {\n // Booleans are more expensive than uint256 or any type that takes up a full\n // word because each write operation emits an extra SLOAD to first read the\n // slot's contents, replace the bits taken up by the boolean, and then write\n // back. This is the compiler's defense against contract upgrades and\n // pointer aliasing, and it cannot be disabled.\n\n // The values being non-zero value makes deployment a bit more expensive,\n // but in exchange the refund on every call to nonReentrant will be lower in\n // amount. Since refunds are capped to a percentage of the total\n // transaction's gas, it is best to keep them low in cases like this one, to\n // increase the likelihood of the full refund coming into effect.\n uint256 private constant _NOT_ENTERED = 1;\n uint256 private constant _ENTERED = 2;\n\n uint256 private _status;\n\n function __ReentrancyGuard_init() internal onlyInitializing {\n __ReentrancyGuard_init_unchained();\n }\n\n function __ReentrancyGuard_init_unchained() internal onlyInitializing {\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and making it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n _nonReentrantBefore();\n _;\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n // On the first call to nonReentrant, _status will be _NOT_ENTERED\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n // Any calls to nonReentrant after this point will fail\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n // By storing the original value once again, a refund is triggered (see\n // https://eips.ethereum.org/EIPS/eip-2200)\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Returns true if the reentrancy guard is currently set to \"entered\", which indicates there is a\n * `nonReentrant` function in the call stack.\n */\n function _reentrancyGuardEntered() internal view returns (bool) {\n return _status == _ENTERED;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/ERC721Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721Upgradeable.sol\";\nimport \"./IERC721ReceiverUpgradeable.sol\";\nimport \"./extensions/IERC721MetadataUpgradeable.sol\";\nimport \"../../utils/AddressUpgradeable.sol\";\nimport \"../../utils/ContextUpgradeable.sol\";\nimport \"../../utils/StringsUpgradeable.sol\";\nimport \"../../utils/introspection/ERC165Upgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {\n using AddressUpgradeable for address;\n using StringsUpgradeable for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {\n __ERC721_init_unchained(name_, symbol_);\n }\n\n function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {\n return\n interfaceId == type(IERC721Upgradeable).interfaceId ||\n interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _ownerOf(tokenId);\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721Upgradeable.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner or approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner or approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner or approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist\n */\n function _ownerOf(uint256 tokenId) internal view virtual returns (address) {\n return _owners[tokenId];\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _ownerOf(tokenId) != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721Upgradeable.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId, 1);\n\n // Check that tokenId was not minted by `_beforeTokenTransfer` hook\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n unchecked {\n // Will not overflow unless all 2**256 token ids are minted to the same owner.\n // Given that tokens are minted one by one, it is impossible in practice that\n // this ever happens. Might change if we allow batch minting.\n // The ERC fails to describe this case.\n _balances[to] += 1;\n }\n\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId, 1);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n * This is an internal function that does not check if the sender is authorized to operate on the token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721Upgradeable.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId, 1);\n\n // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook\n owner = ERC721Upgradeable.ownerOf(tokenId);\n\n // Clear approvals\n delete _tokenApprovals[tokenId];\n\n unchecked {\n // Cannot overflow, as that would require more tokens to be burned/transferred\n // out than the owner initially received through minting and transferring in.\n _balances[owner] -= 1;\n }\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId, 1);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721Upgradeable.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId, 1);\n\n // Check that tokenId was not transferred by `_beforeTokenTransfer` hook\n require(ERC721Upgradeable.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n\n // Clear approvals from the previous owner\n delete _tokenApprovals[tokenId];\n\n unchecked {\n // `_balances[from]` cannot overflow for the same reason as described in `_burn`:\n // `from`'s balance is the number of token held, which is at least one before the current\n // transfer.\n // `_balances[to]` could overflow in the conditions described in `_mint`. That would require\n // all 2**256 token ids to be minted, which in practice is impossible.\n _balances[from] -= 1;\n _balances[to] += 1;\n }\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId, 1);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is\n * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.\n * - When `from` is zero, the tokens will be minted for `to`.\n * - When `to` is zero, ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n * - `batchSize` is non-zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256, /* firstTokenId */\n uint256 batchSize\n ) internal virtual {\n if (batchSize > 1) {\n if (from != address(0)) {\n _balances[from] -= batchSize;\n }\n if (to != address(0)) {\n _balances[to] += batchSize;\n }\n }\n }\n\n /**\n * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is\n * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.\n * - When `from` is zero, the tokens were minted for `to`.\n * - When `to` is zero, ``from``'s tokens were burned.\n * - `from` and `to` are never both zero.\n * - `batchSize` is non-zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 firstTokenId,\n uint256 batchSize\n ) internal virtual {}\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[44] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/IERC721ReceiverUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721ReceiverUpgradeable {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/IERC721Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165Upgradeable.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721Upgradeable is IERC165Upgradeable {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n * understand this adds an external call which potentially creates a reentrancy vulnerability.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/extensions/IERC721MetadataUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721Upgradeable.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721MetadataUpgradeable is IERC721Upgradeable {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/AddressUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n *\n * _Available since v4.8._\n */\n function verifyCallResultFromTarget(\n address target,\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n if (success) {\n if (returndata.length == 0) {\n // only check isContract if the call was successful and the return data is empty\n // otherwise we already know that it was a contract\n require(isContract(target), \"Address: call to non-contract\");\n }\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n /**\n * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason or using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function _revert(bytes memory returndata, string memory errorMessage) private pure {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/ContextUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract ContextUpgradeable is Initializable {\n function __Context_init() internal onlyInitializing {\n }\n\n function __Context_init_unchained() internal onlyInitializing {\n }\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[50] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/CountersUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary CountersUpgradeable {\n struct Counter {\n // This variable should never be directly accessed by users of the library: interactions must be restricted to\n // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n // this feature: see https://github.com/ethereum/solidity/issues/4637\n uint256 _value; // default: 0\n }\n\n function current(Counter storage counter) internal view returns (uint256) {\n return counter._value;\n }\n\n function increment(Counter storage counter) internal {\n unchecked {\n counter._value += 1;\n }\n }\n\n function decrement(Counter storage counter) internal {\n uint256 value = counter._value;\n require(value > 0, \"Counter: decrement overflow\");\n unchecked {\n counter._value = value - 1;\n }\n }\n\n function reset(Counter storage counter) internal {\n counter._value = 0;\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/StringsUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./math/MathUpgradeable.sol\";\n\n/**\n * @dev String operations.\n */\nlibrary StringsUpgradeable {\n bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n unchecked {\n uint256 length = MathUpgradeable.log10(value) + 1;\n string memory buffer = new string(length);\n uint256 ptr;\n /// @solidity memory-safe-assembly\n assembly {\n ptr := add(buffer, add(32, length))\n }\n while (true) {\n ptr--;\n /// @solidity memory-safe-assembly\n assembly {\n mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n }\n value /= 10;\n if (value == 0) break;\n }\n return buffer;\n }\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, MathUpgradeable.log256(value) + 1);\n }\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/ERC165Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165Upgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {\n function __ERC165_init() internal onlyInitializing {\n }\n\n function __ERC165_init_unchained() internal onlyInitializing {\n }\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165Upgradeable).interfaceId;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[50] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/IERC165Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165Upgradeable {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/math/MathUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary MathUpgradeable {\n enum Rounding {\n Down, // Toward negative infinity\n Up, // Toward infinity\n Zero // Toward zero\n }\n\n /**\n * @dev Returns the largest of two numbers.\n */\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n }\n\n /**\n * @dev Returns the smallest of two numbers.\n */\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n /**\n * @dev Returns the average of two numbers. The result is rounded towards\n * zero.\n */\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b) / 2 can overflow.\n return (a & b) + (a ^ b) / 2;\n }\n\n /**\n * @dev Returns the ceiling of the division of two numbers.\n *\n * This differs from standard division with `/` in that it rounds up instead\n * of rounding down.\n */\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b - 1) / b can overflow on addition, so we distribute.\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n /**\n * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0\n * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)\n * with further edits by Uniswap Labs also under MIT license.\n */\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator\n ) internal pure returns (uint256 result) {\n unchecked {\n // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use\n // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n // variables such that product = prod1 * 2^256 + prod0.\n uint256 prod0; // Least significant 256 bits of the product\n uint256 prod1; // Most significant 256 bits of the product\n assembly {\n let mm := mulmod(x, y, not(0))\n prod0 := mul(x, y)\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n }\n\n // Handle non-overflow cases, 256 by 256 division.\n if (prod1 == 0) {\n return prod0 / denominator;\n }\n\n // Make sure the result is less than 2^256. Also prevents denominator == 0.\n require(denominator > prod1);\n\n ///////////////////////////////////////////////\n // 512 by 256 division.\n ///////////////////////////////////////////////\n\n // Make division exact by subtracting the remainder from [prod1 prod0].\n uint256 remainder;\n assembly {\n // Compute remainder using mulmod.\n remainder := mulmod(x, y, denominator)\n\n // Subtract 256 bit number from 512 bit number.\n prod1 := sub(prod1, gt(remainder, prod0))\n prod0 := sub(prod0, remainder)\n }\n\n // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.\n // See https://cs.stackexchange.com/q/138556/92363.\n\n // Does not overflow because the denominator cannot be zero at this stage in the function.\n uint256 twos = denominator & (~denominator + 1);\n assembly {\n // Divide denominator by twos.\n denominator := div(denominator, twos)\n\n // Divide [prod1 prod0] by twos.\n prod0 := div(prod0, twos)\n\n // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n twos := add(div(sub(0, twos), twos), 1)\n }\n\n // Shift in bits from prod1 into prod0.\n prod0 |= prod1 * twos;\n\n // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for\n // four bits. That is, denominator * inv = 1 mod 2^4.\n uint256 inverse = (3 * denominator) ^ 2;\n\n // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works\n // in modular arithmetic, doubling the correct bits in each step.\n inverse *= 2 - denominator * inverse; // inverse mod 2^8\n inverse *= 2 - denominator * inverse; // inverse mod 2^16\n inverse *= 2 - denominator * inverse; // inverse mod 2^32\n inverse *= 2 - denominator * inverse; // inverse mod 2^64\n inverse *= 2 - denominator * inverse; // inverse mod 2^128\n inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.\n // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is\n // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n // is no longer required.\n result = prod0 * inverse;\n return result;\n }\n }\n\n /**\n * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.\n */\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator,\n Rounding rounding\n ) internal pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n result += 1;\n }\n return result;\n }\n\n /**\n * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n *\n * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n */\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n //\n // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n //\n // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`\n // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n //\n // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n uint256 result = 1 << (log2(a) >> 1);\n\n // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n // into the expected uint128 result.\n unchecked {\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n return min(result, a / result);\n }\n }\n\n /**\n * @notice Calculates sqrt(a), following the selected rounding direction.\n */\n function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = sqrt(a);\n return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 2, rounded down, of a positive value.\n * Returns 0 if given 0.\n */\n function log2(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 128;\n }\n if (value >> 64 > 0) {\n value >>= 64;\n result += 64;\n }\n if (value >> 32 > 0) {\n value >>= 32;\n result += 32;\n }\n if (value >> 16 > 0) {\n value >>= 16;\n result += 16;\n }\n if (value >> 8 > 0) {\n value >>= 8;\n result += 8;\n }\n if (value >> 4 > 0) {\n value >>= 4;\n result += 4;\n }\n if (value >> 2 > 0) {\n value >>= 2;\n result += 2;\n }\n if (value >> 1 > 0) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 2, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log2(value);\n return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 10, rounded down, of a positive value.\n * Returns 0 if given 0.\n */\n function log10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >= 10**64) {\n value /= 10**64;\n result += 64;\n }\n if (value >= 10**32) {\n value /= 10**32;\n result += 32;\n }\n if (value >= 10**16) {\n value /= 10**16;\n result += 16;\n }\n if (value >= 10**8) {\n value /= 10**8;\n result += 8;\n }\n if (value >= 10**4) {\n value /= 10**4;\n result += 4;\n }\n if (value >= 10**2) {\n value /= 10**2;\n result += 2;\n }\n if (value >= 10**1) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log10(value);\n return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);\n }\n }\n\n /**\n * @dev Return the log in base 256, rounded down, of a positive value.\n * Returns 0 if given 0.\n *\n * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n */\n function log256(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n result += 16;\n }\n if (value >> 64 > 0) {\n value >>= 64;\n result += 8;\n }\n if (value >> 32 > 0) {\n value >>= 32;\n result += 4;\n }\n if (value >> 16 > 0) {\n value >>= 16;\n result += 2;\n }\n if (value >> 8 > 0) {\n result += 1;\n }\n }\n return result;\n }\n\n /**\n * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n * Returns 0 if given 0.\n */\n function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n }\n }\n}\n"
},
"lib/sstore2/contracts/SSTORE2.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nimport \"./utils/Bytecode.sol\";\n\n/**\n @title A key-value storage with auto-generated keys for storing chunks of data with a lower write & read cost.\n @author Agustin Aguilar <[email protected]>\n\n Readme: https://github.com/0xsequence/sstore2#readme\n*/\nlibrary SSTORE2 {\n error WriteError();\n\n /**\n @notice Stores `_data` and returns `pointer` as key for later retrieval\n @dev The pointer is a contract address with `_data` as code\n @param _data to be written\n @return pointer Pointer to the written `_data`\n */\n function write(bytes memory _data) internal returns (address pointer) {\n // Append 00 to _data so contract can't be called\n // Build init code\n bytes memory code = Bytecode.creationCodeFor(\n abi.encodePacked(\n hex'00',\n _data\n )\n );\n\n // Deploy contract using create\n assembly { pointer := create(0, add(code, 32), mload(code)) }\n\n // Address MUST be non-zero\n if (pointer == address(0)) revert WriteError();\n }\n\n /**\n @notice Reads the contents of the `_pointer` code as data, skips the first byte \n @dev The function is intended for reading pointers generated by `write`\n @param _pointer to be read\n @return data read from `_pointer` contract\n */\n function read(address _pointer) internal view returns (bytes memory) {\n return Bytecode.codeAt(_pointer, 1, type(uint256).max);\n }\n\n /**\n @notice Reads the contents of the `_pointer` code as data, skips the first byte \n @dev The function is intended for reading pointers generated by `write`\n @param _pointer to be read\n @param _start number of bytes to skip\n @return data read from `_pointer` contract\n */\n function read(address _pointer, uint256 _start) internal view returns (bytes memory) {\n return Bytecode.codeAt(_pointer, _start + 1, type(uint256).max);\n }\n\n /**\n @notice Reads the contents of the `_pointer` code as data, skips the first byte \n @dev The function is intended for reading pointers generated by `write`\n @param _pointer to be read\n @param _start number of bytes to skip\n @param _end index before which to end extraction\n @return data read from `_pointer` contract\n */\n function read(address _pointer, uint256 _start, uint256 _end) internal view returns (bytes memory) {\n return Bytecode.codeAt(_pointer, _start + 1, _end + 1);\n }\n}\n"
},
"lib/sstore2/contracts/utils/Bytecode.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\n\nlibrary Bytecode {\n error InvalidCodeAtRange(uint256 _size, uint256 _start, uint256 _end);\n\n /**\n @notice Generate a creation code that results on a contract with `_code` as bytecode\n @param _code The returning value of the resulting `creationCode`\n @return creationCode (constructor) for new contract\n */\n function creationCodeFor(bytes memory _code) internal pure returns (bytes memory) {\n /*\n 0x00 0x63 0x63XXXXXX PUSH4 _code.length size\n 0x01 0x80 0x80 DUP1 size size\n 0x02 0x60 0x600e PUSH1 14 14 size size\n 0x03 0x60 0x6000 PUSH1 00 0 14 size size\n 0x04 0x39 0x39 CODECOPY size\n 0x05 0x60 0x6000 PUSH1 00 0 size\n 0x06 0xf3 0xf3 RETURN\n <CODE>\n */\n\n return abi.encodePacked(\n hex\"63\",\n uint32(_code.length),\n hex\"80_60_0E_60_00_39_60_00_F3\",\n _code\n );\n }\n\n /**\n @notice Returns the size of the code on a given address\n @param _addr Address that may or may not contain code\n @return size of the code on the given `_addr`\n */\n function codeSize(address _addr) internal view returns (uint256 size) {\n assembly { size := extcodesize(_addr) }\n }\n\n /**\n @notice Returns the code of a given address\n @dev It will fail if `_end < _start`\n @param _addr Address that may or may not contain code\n @param _start number of bytes of code to skip on read\n @param _end index before which to end extraction\n @return oCode read from `_addr` deployed bytecode\n\n Forked from: https://gist.github.com/KardanovIR/fe98661df9338c842b4a30306d507fbd\n */\n function codeAt(address _addr, uint256 _start, uint256 _end) internal view returns (bytes memory oCode) {\n uint256 csize = codeSize(_addr);\n if (csize == 0) return bytes(\"\");\n\n if (_start > csize) return bytes(\"\");\n if (_end < _start) revert InvalidCodeAtRange(csize, _start, _end); \n\n unchecked {\n uint256 reqSize = _end - _start;\n uint256 maxSize = csize - _start;\n\n uint256 size = maxSize < reqSize ? maxSize : reqSize;\n\n assembly {\n // allocate output byte array - this could also be done without assembly\n // by using o_code = new bytes(size)\n oCode := mload(0x40)\n // new \"memory end\" including padding\n mstore(0x40, add(oCode, and(add(add(size, 0x20), 0x1f), not(0x1f))))\n // store length in memory\n mstore(oCode, size)\n // actually retrieve the code, this needs assembly\n extcodecopy(_addr, add(oCode, 0x20), _start, size)\n }\n }\n }\n}\n"
},
"src/TokenBase.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {ERC721Upgradeable} from \"@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol\";\nimport {Ownable2StepUpgradeable} from \"@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol\";\nimport {CountersUpgradeable} from \"@openzeppelin/contracts-upgradeable/utils/CountersUpgradeable.sol\";\nimport {ReentrancyGuardUpgradeable} from \"@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol\";\nimport {IToken} from \"./tokens/interfaces/IToken.sol\";\nimport {IObservability} from \"./observability/Observability.sol\";\nimport {UUPS} from \"./lib/proxy/UUPS.sol\";\nimport {ITokenFactory} from \"./interfaces/ITokenFactory.sol\";\nimport {VersionedContract} from \"./VersionedContract.sol\";\n\nabstract contract TokenBase is\n IToken,\n ERC721Upgradeable,\n ReentrancyGuardUpgradeable,\n Ownable2StepUpgradeable,\n VersionedContract,\n UUPS\n{\n using CountersUpgradeable for CountersUpgradeable.Counter;\n\n CountersUpgradeable.Counter private _tokenIdCounter;\n\n mapping(uint256 => bytes32) public tokenIdToPreviousBlockHash;\n mapping(address => bool) public allowedMinters;\n\n address public immutable factory;\n address public immutable o11y;\n uint256 internal immutable FUNDS_SEND_GAS_LIMIT = 210_000;\n\n TokenInfo public tokenInfo;\n\n //[[[[MODIFIERS]]]]\n /// @notice restricts to only users with minter role\n modifier onlyAllowedMinter() {\n if (!allowedMinters[msg.sender]) revert SenderNotMinter();\n _;\n }\n\n //[[[[SETUP FUNCTIONS]]]]\n\n constructor(address _factory, address _o11y) {\n factory = _factory;\n o11y = _o11y;\n }\n\n //[[[[VIEW FUNCTIONS]]]]\n\n /// @notice gets the total supply of tokens\n function totalSupply() public view returns (uint256) {\n return _tokenIdCounter.current();\n }\n\n //[[[[WITHDRAW FUNCTIONS]]]]\n\n /// @notice withdraws the funds from the contract\n function withdraw() external nonReentrant returns (bool) {\n uint256 amount = address(this).balance;\n\n (bool successFunds, ) = tokenInfo.fundsRecipent.call{\n value: amount,\n gas: FUNDS_SEND_GAS_LIMIT\n }(\"\");\n\n if (!successFunds) revert FundsSendFailure();\n\n IObservability(o11y).emitFundsWithdrawn(\n msg.sender,\n tokenInfo.fundsRecipent,\n amount\n );\n return successFunds;\n }\n\n /// @notice sets the funds recipent for token funds\n function setFundsRecipent(address fundsRecipent) external onlyOwner {\n tokenInfo.fundsRecipent = fundsRecipent;\n }\n\n //[[[[MINT FUNCTIONS]]]]\n\n /// @notice sets the minter role for the given user\n function setMinter(address user, bool isAllowed) public onlyOwner {\n allowedMinters[user] = isAllowed;\n }\n\n /// @notice mint a token for the given address\n function safeMint(address to) public onlyAllowedMinter {\n if (totalSupply() >= tokenInfo.maxSupply) revert MaxSupplyReached();\n _seedAndMint(to);\n }\n\n //[[[[PRIVATE FUNCTIONS]]]]\n\n /// @notice seeds the token id and mints the token\n function _seedAndMint(address to) internal {\n uint256 tokenId = _tokenIdCounter.current();\n\n tokenIdToPreviousBlockHash[tokenId] = blockhash(block.number - 1);\n\n _tokenIdCounter.increment();\n _safeMint(to, tokenId);\n }\n\n /// @notice checks if an upgrade is valid\n function _authorizeUpgrade(address newImpl) internal override onlyOwner {\n if (\n !ITokenFactory(factory).isValidUpgrade(\n _getImplementation(),\n newImpl\n )\n ) {\n revert ITokenFactory.InvalidUpgrade(newImpl);\n }\n }\n}\n"
},
"src/VersionedContract.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\nabstract contract VersionedContract {\n function contractVersion() external pure returns (string memory) {\n return \"1.0.0\";\n }\n}\n"
},
"src/interfaces/ITokenFactory.sol": {
"content": "//SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface ITokenFactory {\n error InvalidUpgrade(address impl);\n error NotDeployed(address impl);\n\n /// @notice Creates a new token contract with the given implementation and data\n function create(\n address tokenImpl,\n bytes calldata data\n ) external returns (address clone);\n\n /// @notice checks if an implementation is valid\n function isValidDeployment(address impl) external view returns (bool);\n\n /// @notice registers a new implementation\n function registerDeployment(address impl) external;\n\n /// @notice unregisters an implementation\n function unregisterDeployment(address impl) external;\n\n /// @notice checks if an upgrade is valid\n function isValidUpgrade(\n address prevImpl,\n address newImpl\n ) external returns (bool);\n\n /// @notice registers a new upgrade\n function registerUpgrade(address prevImpl, address newImpl) external;\n\n /// @notice unregisters an upgrade\n function unregisterUpgrade(address prevImpl, address newImpl) external;\n}\n"
},
"src/lib/interfaces/IERC1967Upgrade.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\n/// @title IERC1967Upgrade\n/// @author Rohan Kulkarni\n/// @notice The external ERC1967Upgrade events and errors\ninterface IERC1967Upgrade {\n /// ///\n /// EVENTS ///\n /// ///\n\n /// @notice Emitted when the implementation is upgraded\n /// @param impl The address of the implementation\n event Upgraded(address impl);\n\n /// ///\n /// ERRORS ///\n /// ///\n\n /// @dev Reverts if an implementation is an invalid upgrade\n /// @param impl The address of the invalid implementation\n error INVALID_UPGRADE(address impl);\n\n /// @dev Reverts if an implementation upgrade is not stored at the storage slot of the original\n error UNSUPPORTED_UUID();\n\n /// @dev Reverts if an implementation does not support ERC1822 proxiableUUID()\n error ONLY_UUPS();\n}\n"
},
"src/lib/interfaces/IUUPS.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.16;\n\nimport {IERC1822Proxiable} from \"@openzeppelin/contracts/interfaces/draft-IERC1822.sol\";\nimport {IERC1967Upgrade} from \"./IERC1967Upgrade.sol\";\n\n/// @title IUUPS\n/// @author Rohan Kulkarni\n/// @notice The external UUPS errors and functions\ninterface IUUPS is IERC1967Upgrade, IERC1822Proxiable {\n /// ///\n /// ERRORS ///\n /// ///\n\n /// @dev Reverts if not called directly\n error ONLY_CALL();\n\n /// @dev Reverts if not called via delegatecall\n error ONLY_DELEGATECALL();\n\n /// @dev Reverts if not called via proxy\n error ONLY_PROXY();\n\n /// ///\n /// FUNCTIONS ///\n /// ///\n\n /// @notice Upgrades to an implementation\n /// @param newImpl The new implementation address\n function upgradeTo(address newImpl) external;\n\n /// @notice Upgrades to an implementation with an additional function call\n /// @param newImpl The new implementation address\n /// @param data The encoded function call\n function upgradeToAndCall(\n address newImpl,\n bytes memory data\n ) external payable;\n}\n"
},
"src/lib/proxy/ERC1967Proxy.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\nimport {Proxy} from \"@openzeppelin/contracts/proxy/Proxy.sol\";\n\nimport {IERC1967Upgrade} from \"../interfaces/IERC1967Upgrade.sol\";\nimport {ERC1967Upgrade} from \"./ERC1967Upgrade.sol\";\n\n/// @title ERC1967Proxy\n/// @author Rohan Kulkarni\n/// @notice Modified from OpenZeppelin Contracts v4.7.3 (proxy/ERC1967/ERC1967Proxy.sol)\n/// - Inherits a modern, minimal ERC1967Upgrade\ncontract ERC1967Proxy is IERC1967Upgrade, Proxy, ERC1967Upgrade {\n /// ///\n /// CONSTRUCTOR ///\n /// ///\n\n /// @dev Initializes the proxy with an implementation contract and encoded function call\n /// @param _logic The implementation address\n /// @param _data The encoded function call\n constructor(address _logic, bytes memory _data) payable {\n _upgradeToAndCall(_logic, _data, false);\n }\n\n /// ///\n /// FUNCTIONS ///\n /// ///\n\n /// @dev The address of the current implementation\n function _implementation()\n internal\n view\n virtual\n override\n returns (address)\n {\n return ERC1967Upgrade._getImplementation();\n }\n}\n"
},
"src/lib/proxy/ERC1967Upgrade.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\nimport {IERC1822Proxiable} from \"@openzeppelin/contracts/interfaces/draft-IERC1822.sol\";\nimport {StorageSlot} from \"@openzeppelin/contracts/utils/StorageSlot.sol\";\n\nimport {IERC1967Upgrade} from \"../interfaces/IERC1967Upgrade.sol\";\nimport {Address} from \"../utils/Address.sol\";\n\n/// @title ERC1967Upgrade\n/// @author Rohan Kulkarni\n/// @notice Modified from OpenZeppelin Contracts v4.7.3 (proxy/ERC1967/ERC1967Upgrade.sol)\n/// - Uses custom errors declared in IERC1967Upgrade\n/// - Removes ERC1967 admin and beacon support\nabstract contract ERC1967Upgrade is IERC1967Upgrade {\n /// ///\n /// CONSTANTS ///\n /// ///\n\n /// @dev bytes32(uint256(keccak256('eip1967.proxy.rollback')) - 1)\n bytes32 private constant _ROLLBACK_SLOT =\n 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;\n\n /// @dev bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)\n bytes32 internal constant _IMPLEMENTATION_SLOT =\n 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\n\n /// ///\n /// FUNCTIONS ///\n /// ///\n\n /// @dev Upgrades to an implementation with security checks for UUPS proxies and an additional function call\n /// @param _newImpl The new implementation address\n /// @param _data The encoded function call\n function _upgradeToAndCallUUPS(\n address _newImpl,\n bytes memory _data,\n bool _forceCall\n ) internal {\n if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {\n _setImplementation(_newImpl);\n } else {\n try IERC1822Proxiable(_newImpl).proxiableUUID() returns (\n bytes32 slot\n ) {\n if (slot != _IMPLEMENTATION_SLOT) revert UNSUPPORTED_UUID();\n } catch {\n revert ONLY_UUPS();\n }\n\n _upgradeToAndCall(_newImpl, _data, _forceCall);\n }\n }\n\n /// @dev Upgrades to an implementation with an additional function call\n /// @param _newImpl The new implementation address\n /// @param _data The encoded function call\n function _upgradeToAndCall(\n address _newImpl,\n bytes memory _data,\n bool _forceCall\n ) internal {\n _upgradeTo(_newImpl);\n\n if (_data.length > 0 || _forceCall) {\n Address.functionDelegateCall(_newImpl, _data);\n }\n }\n\n /// @dev Performs an implementation upgrade\n /// @param _newImpl The new implementation address\n function _upgradeTo(address _newImpl) internal {\n _setImplementation(_newImpl);\n\n emit Upgraded(_newImpl);\n }\n\n /// @dev Stores the address of an implementation\n /// @param _impl The implementation address\n function _setImplementation(address _impl) private {\n if (!Address.isContract(_impl)) revert INVALID_UPGRADE(_impl);\n\n StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = _impl;\n }\n\n /// @dev The address of the current implementation\n function _getImplementation() internal view returns (address) {\n return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;\n }\n}\n"
},
"src/lib/proxy/UUPS.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\nimport {IUUPS} from \"../interfaces/IUUPS.sol\";\nimport {ERC1967Upgrade} from \"./ERC1967Upgrade.sol\";\n\n/// @title UUPS\n/// @author Rohan Kulkarni\n/// @notice Modified from OpenZeppelin Contracts v4.7.3 (proxy/utils/UUPSUpgradeable.sol)\n/// - Uses custom errors declared in IUUPS\n/// - Inherits a modern, minimal ERC1967Upgrade\nabstract contract UUPS is IUUPS, ERC1967Upgrade {\n /// ///\n /// IMMUTABLES ///\n /// ///\n\n /// @dev The address of the implementation\n address private immutable __self = address(this);\n\n /// ///\n /// MODIFIERS ///\n /// ///\n\n /// @dev Ensures that execution is via proxy delegatecall with the correct implementation\n modifier onlyProxy() {\n if (address(this) == __self) revert ONLY_DELEGATECALL();\n if (_getImplementation() != __self) revert ONLY_PROXY();\n _;\n }\n\n /// @dev Ensures that execution is via direct call\n modifier notDelegated() {\n if (address(this) != __self) revert ONLY_CALL();\n _;\n }\n\n /// ///\n /// FUNCTIONS ///\n /// ///\n\n /// @dev Hook to authorize an implementation upgrade\n /// @param _newImpl The new implementation address\n function _authorizeUpgrade(address _newImpl) internal virtual;\n\n /// @notice Upgrades to an implementation\n /// @param _newImpl The new implementation address\n function upgradeTo(address _newImpl) external onlyProxy {\n _authorizeUpgrade(_newImpl);\n _upgradeToAndCallUUPS(_newImpl, \"\", false);\n }\n\n /// @notice Upgrades to an implementation with an additional function call\n /// @param _newImpl The new implementation address\n /// @param _data The encoded function call\n function upgradeToAndCall(\n address _newImpl,\n bytes memory _data\n ) external payable onlyProxy {\n _authorizeUpgrade(_newImpl);\n _upgradeToAndCallUUPS(_newImpl, _data, true);\n }\n\n /// @notice The storage slot of the implementation address\n function proxiableUUID() external view notDelegated returns (bytes32) {\n return _IMPLEMENTATION_SLOT;\n }\n}\n"
},
"src/lib/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.16;\n\n/// @title EIP712\n/// @author Rohan Kulkarni\n/// @notice Modified from OpenZeppelin Contracts v4.7.3 (utils/Address.sol)\n/// - Uses custom errors `INVALID_TARGET()` & `DELEGATE_CALL_FAILED()`\n/// - Adds util converting address to bytes32\nlibrary Address {\n /// ///\n /// ERRORS ///\n /// ///\n\n /// @dev Reverts if the target of a delegatecall is not a contract\n error INVALID_TARGET();\n\n /// @dev Reverts if a delegatecall has failed\n error DELEGATE_CALL_FAILED();\n\n /// ///\n /// FUNCTIONS ///\n /// ///\n\n /// @dev Utility to convert an address to bytes32\n function toBytes32(address _account) internal pure returns (bytes32) {\n return bytes32(uint256(uint160(_account)) << 96);\n }\n\n /// @dev If an address is a contract\n function isContract(address _account) internal view returns (bool rv) {\n assembly {\n rv := gt(extcodesize(_account), 0)\n }\n }\n\n /// @dev Performs a delegatecall on an address\n function functionDelegateCall(\n address _target,\n bytes memory _data\n ) internal returns (bytes memory) {\n if (!isContract(_target)) revert INVALID_TARGET();\n\n (bool success, bytes memory returndata) = _target.delegatecall(_data);\n\n return verifyCallResult(success, returndata);\n }\n\n /// @dev Verifies a delegatecall was successful\n function verifyCallResult(\n bool _success,\n bytes memory _returndata\n ) internal pure returns (bytes memory) {\n if (_success) {\n return _returndata;\n } else {\n if (_returndata.length > 0) {\n assembly {\n let returndata_size := mload(_returndata)\n\n revert(add(32, _returndata), returndata_size)\n }\n } else {\n revert DELEGATE_CALL_FAILED();\n }\n }\n }\n}\n"
},
"src/observability/Observability.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.8.13;\n\nimport {IObservability, IObservabilityEvents} from \"./interface/IObservability.sol\";\n\ncontract Observability is IObservability, IObservabilityEvents {\n /// @notice Emitted when a new clone is deployed\n function emitCloneDeployed(address owner, address clone) external override {\n emit CloneDeployed(msg.sender, owner, clone);\n }\n\n /// @notice Emitted when a sale has occured\n function emitSale(\n address to,\n uint256 pricePerToken,\n uint256 amount\n ) external override {\n emit Sale(msg.sender, to, pricePerToken, amount);\n }\n\n /// @notice Emitted when funds have been withdrawn\n function emitFundsWithdrawn(\n address withdrawnBy,\n address withdrawnTo,\n uint256 amount\n ) external override {\n emit FundsWithdrawn(msg.sender, withdrawnBy, withdrawnTo, amount);\n }\n\n /// @notice Emitted when a new implementation is registered\n function emitDeploymentTargetRegistererd(address impl) external override {\n emit DeploymentTargetRegistered(impl);\n }\n\n /// @notice Emitted when an implementation is unregistered\n function emitDeploymentTargetUnregistered(address impl) external override {\n emit DeploymentTargetUnregistered(impl);\n }\n\n /// @notice Emitted when a new upgrade is registered\n function emitUpgradeRegistered(\n address prevImpl,\n address impl\n ) external override {\n emit UpgradeRegistered(prevImpl, impl);\n }\n\n /// @notice Emitted when an upgrade is unregistered\n function emitUpgradeUnregistered(\n address prevImpl,\n address impl\n ) external override {\n emit UpgradeUnregistered(prevImpl, impl);\n }\n}\n"
},
"src/observability/interface/IObservability.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.8.13;\n\ninterface IObservabilityEvents {\n /// @notice Emitted when a new clone is deployed\n event CloneDeployed(\n address indexed factory,\n address indexed owner,\n address clone\n );\n\n /// @notice Emitted when a sale has occured\n event Sale(\n address indexed clone,\n address indexed to,\n uint256 pricePerToken,\n uint256 amount\n );\n\n /// @notice Emitted when funds have been withdrawn\n event FundsWithdrawn(\n address indexed clone,\n address indexed withdrawnBy,\n address indexed withdrawnTo,\n uint256 amount\n );\n\n /// @notice Emitted when a new implementation is registered\n event DeploymentTargetRegistered(address indexed impl);\n\n /// @notice Emitted when an implementation is unregistered\n event DeploymentTargetUnregistered(address indexed impl);\n\n /// @notice Emitted when an upgrade is registered\n /// @param prevImpl The address of the previous implementation\n /// @param newImpl The address of the registered upgrade\n event UpgradeRegistered(address indexed prevImpl, address indexed newImpl);\n\n /// @notice Emitted when an upgrade is unregistered\n /// @param prevImpl The address of the previous implementation\n /// @param newImpl The address of the unregistered upgrade\n event UpgradeUnregistered(\n address indexed prevImpl,\n address indexed newImpl\n );\n}\n\ninterface IObservability {\n function emitCloneDeployed(address owner, address clone) external;\n\n function emitSale(\n address to,\n uint256 pricePerToken,\n uint256 amount\n ) external;\n\n function emitFundsWithdrawn(\n address withdrawnBy,\n address withdrawnTo,\n uint256 amount\n ) external;\n\n function emitDeploymentTargetRegistererd(address impl) external;\n\n function emitDeploymentTargetUnregistered(address imp) external;\n\n function emitUpgradeRegistered(address prevImpl, address impl) external;\n\n function emitUpgradeUnregistered(address prevImpl, address impl) external;\n}\n"
},
"src/renderer/HTMLRendererProxy.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity ^0.8.13;\n\nimport {ERC1967Proxy} from \"../lib/proxy/ERC1967Proxy.sol\";\n\ncontract HTMLRendererProxy is ERC1967Proxy {\n constructor(address logic, bytes memory data) ERC1967Proxy(logic, data) {}\n}\n"
},
"src/renderer/interfaces/IHTMLRenderer.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity ^0.8.13;\n\ninterface IHTMLRenderer {\n struct FileType {\n string name;\n address fileSystem;\n uint8 fileType;\n }\n\n function initilize(address owner) external;\n\n /// @notice Returns the HTML for the given script and imports\n function generateURI(\n FileType[] calldata imports,\n string calldata script\n ) external view returns (string memory);\n}\n"
},
"src/tokens/FixedPriceToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {TokenBase} from \"../TokenBase.sol\";\nimport {IHTMLRenderer} from \"../renderer/interfaces/IHTMLRenderer.sol\";\nimport {IObservability} from \"../observability/Observability.sol\";\nimport {IFixedPriceToken} from \"./interfaces/IFixedPriceToken.sol\";\nimport {IHTMLRenderer} from \"../renderer/interfaces/IHTMLRenderer.sol\";\nimport {StringsUpgradeable} from \"@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol\";\nimport {FixedPriceTokenStorageV1} from \"./storage/FixedPriceTokenStorageV1.sol\";\nimport {ITokenFactory} from \"../interfaces/ITokenFactory.sol\";\nimport {HTMLRendererProxy} from \"../renderer/HTMLRendererProxy.sol\";\nimport {IHTMLRenderer} from \"../renderer/interfaces/IHTMLRenderer.sol\";\nimport {IFileStore} from \"ethfs/IFileStore.sol\";\nimport {SSTORE2} from \"@0xsequence/sstore2/contracts/SSTORE2.sol\";\nimport {Base64} from \"base64-sol/base64.sol\";\n\ncontract FixedPriceToken is\n IFixedPriceToken,\n TokenBase,\n FixedPriceTokenStorageV1\n{\n using StringsUpgradeable for uint256;\n\n //[[[[SETUP FUNCTIONS]]]]\n\n constructor(address _factory, address _o11y) TokenBase(_factory, _o11y) {}\n\n /// @notice Initializes the token\n function initialize(\n address owner,\n bytes calldata data\n ) external initializer {\n if (msg.sender != factory) revert FactoryMustInitilize();\n\n (\n string memory _script,\n string memory _previewBaseURI,\n address _rendererImpl,\n TokenInfo memory _tokenInfo,\n SaleInfo memory _saleInfo,\n IHTMLRenderer.FileType[] memory _imports\n ) = abi.decode(\n data,\n (\n string,\n string,\n address,\n TokenInfo,\n SaleInfo,\n IHTMLRenderer.FileType[]\n )\n );\n\n if (!(ITokenFactory(factory).isValidDeployment(_rendererImpl)))\n revert ITokenFactory.NotDeployed(_rendererImpl);\n\n htmlRenderer = address(new HTMLRendererProxy(_rendererImpl, \"\"));\n allowedMinters[owner] = true;\n tokenInfo = _tokenInfo;\n saleInfo = _saleInfo;\n\n IHTMLRenderer(htmlRenderer).initilize(owner);\n\n __ERC721_init(_tokenInfo.name, _tokenInfo.symbol);\n _transferOwnership(owner);\n _addManyImports(_imports);\n _setScript(_script);\n _setPreviewBaseURI(_previewBaseURI);\n _mintArtistProofs(_saleInfo.artistProofCount);\n }\n\n //[[[[VIEW FUNCTIONS]]]]\n\n /// @notice a helper function for generating inital contract props\n function constructInitalProps(\n string memory _script,\n string memory _previewBaseURI,\n address _rendererImpl,\n TokenInfo memory _tokenInfo,\n SaleInfo memory _saleInfo,\n IHTMLRenderer.FileType[] memory _imports\n ) public pure returns (bytes memory) {\n return\n abi.encode(\n _script,\n _previewBaseURI,\n _rendererImpl,\n _tokenInfo,\n _saleInfo,\n _imports\n );\n }\n\n /// @notice returns token metadata for a given token id\n function tokenURI(\n uint256 tokenId\n ) public view override returns (string memory) {\n string memory tokenIdString = tokenId.toString();\n string memory fullName = string(\n abi.encodePacked(name(), \" \", tokenIdString)\n );\n string memory animationURL = tokenHTML(tokenId);\n string memory image = generatePreviewURI(tokenIdString);\n return\n genericDataURI(\n fullName,\n tokenInfo.description,\n animationURL,\n image\n );\n }\n\n /// @notice contruct a generic data URI from token data\n function genericDataURI(\n string memory _name,\n string memory _description,\n string memory _animationURL,\n string memory _image\n ) public pure returns (string memory) {\n return\n string.concat(\n \"data:application/json;base64,\",\n Base64.encode(\n bytes(\n string.concat(\n '{\"name\":\"',\n _name,\n '\", \"description\":\"',\n _description,\n '\", \"animation_url\": \"',\n _animationURL,\n '\", \"image\": \"',\n _image,\n '\"}'\n )\n )\n )\n );\n }\n\n /// @notice generate a preview URI for the token\n function generatePreviewURI(\n string memory tokenId\n ) public view returns (string memory) {\n return\n string.concat(\n previewBaseURI,\n uint256(uint160(address(this))).toHexString(20),\n \"/\",\n tokenId\n );\n }\n\n /// @notice generate the html for the token\n function tokenHTML(uint256 tokenId) public view returns (string memory) {\n return\n IHTMLRenderer(htmlRenderer).generateURI(\n imports,\n generateFullScript(tokenId)\n );\n }\n\n /// @notice generate the full script for the token\n function generateFullScript(\n uint256 tokenId\n ) public view returns (string memory) {\n return\n string.concat(\n '<script>var blockHash=\"',\n uint256(tokenIdToPreviousBlockHash[tokenId]).toString(),\n '\";var tokenId=\"',\n tokenId.toString(),\n '\";var timestamp=\"',\n block.timestamp.toString(),\n '\";',\n getScript(),\n \"</script>\"\n );\n }\n\n /// @notice get the script for the contract\n function getScript() public view returns (string memory) {\n return string(SSTORE2.read(scriptPointer));\n }\n\n //[[[[SCRIPT FUNCTIONS]]]]\n\n /// @notice set the script for the contract\n function setScript(string memory script) public onlyOwner {\n _setScript(script);\n }\n\n //[[[[PREVIEW FUNCTIONS]]]]\n\n /// @notice get the preview base URI for the token\n function setPreviewBaseURL(string memory uri) public onlyOwner {\n _setPreviewBaseURI(uri);\n }\n\n //[[[[RENDERER FUNCTIONS]]]]\n\n /// @notice set the html renderer for the token\n function setHTMLRenderer(address _htmlRenderer) external onlyOwner {\n htmlRenderer = _htmlRenderer;\n }\n\n /// @notice add multiple imports to the token\n function addManyImports(\n IHTMLRenderer.FileType[] calldata _imports\n ) external onlyOwner {\n _addManyImports(_imports);\n }\n\n /// @notice set a single import to the token for a given index\n function setImport(\n uint256 index,\n IHTMLRenderer.FileType calldata _import\n ) external onlyOwner {\n _setImport(index, _import);\n }\n\n //[[[[PURCHASE FUNCTIONS]]]]\n\n /// @notice purchase a number of tokens\n function purchase(uint256 amount) external payable nonReentrant {\n if (\n block.timestamp < saleInfo.startTime ||\n block.timestamp >= saleInfo.endTime\n ) revert SaleNotActive();\n\n if (msg.value < (amount * saleInfo.price)) revert InvalidPrice();\n if (totalSupply() + amount > tokenInfo.maxSupply) revert SoldOut();\n\n IObservability(o11y).emitSale(msg.sender, saleInfo.price, amount);\n\n for (uint256 i = 0; i < amount; i++) {\n _seedAndMint(msg.sender);\n }\n }\n\n //[[[[PRIVATE FUNCTIONS]]]]\n /// @notice adds a single import\n function _addImport(IHTMLRenderer.FileType memory _import) private {\n imports.push(_import);\n }\n\n /// @notice adds many imports\n function _addManyImports(IHTMLRenderer.FileType[] memory _imports) private {\n uint256 numImports = _imports.length;\n for (uint256 i; i < numImports; i++) {\n _addImport(_imports[i]);\n }\n }\n\n /// @notice sets a single import for the given index\n function _setImport(\n uint256 index,\n IHTMLRenderer.FileType memory _import\n ) private {\n imports[index] = _import;\n }\n\n /// @notice store the script and ovverwrite the script pointer\n function _setScript(string memory script) private {\n scriptPointer = SSTORE2.write(bytes(script));\n }\n\n /// @notice set the preview base URI\n function _setPreviewBaseURI(string memory _previewBaseURI) private {\n previewBaseURI = _previewBaseURI;\n }\n\n /// @notice mint the artist proofs\n function _mintArtistProofs(uint16 amount) private {\n if (proofsMinted) revert ProofsMinted();\n\n for (uint256 i = 0; i < amount; i++) {\n _seedAndMint(owner());\n }\n\n proofsMinted = true;\n }\n}\n"
},
"src/tokens/interfaces/IFixedPriceToken.sol": {
"content": "//SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IHTMLRenderer} from \"../../renderer/interfaces/IHTMLRenderer.sol\";\n\ninterface IFixedPriceToken {\n struct SaleInfo {\n uint16 artistProofCount;\n uint64 startTime;\n uint64 endTime;\n uint112 price;\n }\n\n error SaleNotActive();\n error InvalidPrice();\n error SoldOut();\n error ProofsMinted();\n\n /// @notice initialize the token\n function initialize(address owner, bytes calldata data) external;\n\n /// @notice contruct a generic data URI from token data\n function genericDataURI(\n string memory _name,\n string memory _description,\n string memory _animationURL,\n string memory _image\n ) external pure returns (string memory);\n\n /// @notice generate a preview URI for the token\n function generatePreviewURI(\n string memory tokenId\n ) external view returns (string memory);\n\n /// @notice generate the html for the token\n function tokenHTML(uint256 tokenId) external view returns (string memory);\n\n /// @notice generate the full script for the token\n function generateFullScript(\n uint256 tokenId\n ) external view returns (string memory);\n\n /// @notice get the script for the contract\n function getScript() external view returns (string memory);\n\n /// @notice set the script for the contract\n function setScript(string memory script) external;\n\n /// @notice get the preview base URI for the token\n function setPreviewBaseURL(string memory uri) external;\n\n /// @notice set the html renderer for the token\n function setHTMLRenderer(address _htmlRenderer) external;\n\n /// @notice add multiple imports to the token\n function addManyImports(\n IHTMLRenderer.FileType[] calldata _imports\n ) external;\n\n /// @notice set a single import to the token for a given index\n function setImport(\n uint256 index,\n IHTMLRenderer.FileType calldata _import\n ) external;\n\n /// @notice purchase a number of tokens\n function purchase(uint256 amount) external payable;\n}\n"
},
"src/tokens/interfaces/IToken.sol": {
"content": "//SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IToken {\n struct TokenInfo {\n string name;\n string symbol;\n string description;\n address fundsRecipent;\n uint256 maxSupply;\n }\n\n error FactoryMustInitilize();\n error SenderNotMinter();\n error FundsSendFailure();\n error MaxSupplyReached();\n\n /// @notice returns the total supply of tokens\n function totalSupply() external returns (uint256);\n\n /// @notice withdraws the funds from the contract\n function withdraw() external returns (bool);\n\n /// @notice mint a token for the given address\n function safeMint(address to) external;\n\n /// @notice sets the funds recipent for token funds\n function setFundsRecipent(address fundsRecipent) external;\n\n /// @notice sets the minter status for the given user\n function setMinter(address user, bool isAllowed) external;\n}\n"
},
"src/tokens/storage/FixedPriceTokenStorageV1.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity ^0.8.13;\nimport {IFixedPriceToken} from \"../interfaces/IFixedPriceToken.sol\";\nimport {IHTMLRenderer} from \"../../renderer/interfaces/IHTMLRenderer.sol\";\n\nabstract contract FixedPriceTokenStorageV1 {\n /// @notice Storage pointer for the generative script\n address scriptPointer;\n\n /// @notice Address of the HTML renderer\n address htmlRenderer;\n\n /// @notice Base URI for the preview URI\n string previewBaseURI;\n\n /// @notice Required imports for the renderer\n IHTMLRenderer.FileType[] public imports;\n\n /// @notice Sales info for token purchases\n IFixedPriceToken.SaleInfo public saleInfo;\n\n /// @notice Flag to indicate if the artist proofs have been minted\n bool proofsMinted;\n}\n"
}
},
"settings": {
"remappings": [
"@0xsequence/sstore2/=lib/sstore2/",
"@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
"@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
"ERC721A-Upgradeable/=lib/ERC721A-Upgradeable/contracts/",
"base64-sol/=lib/base64/",
"base64/=lib/base64/",
"ds-test/=lib/forge-std/lib/ds-test/src/",
"erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
"ethfs/=lib/ethfs/packages/contracts/src/",
"ethier/=lib/ethfs/packages/contracts/lib/ethier/",
"forge-std/=lib/forge-std/src/",
"openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
"openzeppelin/=lib/ethfs/packages/contracts/lib/openzeppelin-contracts/contracts/",
"solady/=lib/ethfs/packages/contracts/lib/solady/src/",
"solmate/=lib/ethfs/packages/contracts/lib/solady/lib/solmate/src/",
"sstore2/=lib/sstore2/contracts/"
],
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"bytecodeHash": "ipfs"
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "london",
"libraries": {}
}
} |