// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol)pragmasolidity ^0.8.0;import"./IAccessControl.sol";
import"../utils/Context.sol";
import"../utils/Strings.sol";
import"../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/abstractcontractAccessControlisContext, IAccessControl, ERC165{
structRoleData {
mapping(address=>bool) members;
bytes32 adminRole;
}
mapping(bytes32=> RoleData) private _roles;
bytes32publicconstant DEFAULT_ADMIN_ROLE =0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/modifieronlyRole(bytes32 role) {
_checkRole(role, _msgSender());
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IAccessControl).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/functionhasRole(bytes32 role, address account) publicviewoverridereturns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/function_checkRole(bytes32 role, address account) internalview{
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/functiongetRoleAdmin(bytes32 role) publicviewoverridereturns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functiongrantRole(bytes32 role, address account) publicvirtualoverrideonlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functionrevokeRole(bytes32 role, address account) publicvirtualoverrideonlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/functionrenounceRole(bytes32 role, address account) publicvirtualoverride{
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/function_setupRole(bytes32 role, address account) internalvirtual{
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/function_setRoleAdmin(bytes32 role, bytes32 adminRole) internalvirtual{
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*/function_grantRole(bytes32 role, address account) internalvirtual{
if (!hasRole(role, account)) {
_roles[role].members[account] =true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*/function_revokeRole(bytes32 role, address account) internalvirtual{
if (hasRole(role, account)) {
_roles[role].members[account] =false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
Contract Source Code
File 2 of 26: Address.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)pragmasolidity ^0.8.0;/**
* @dev Collection of functions related to the address type
*/libraryAddress{
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/functionisContract(address account) internalviewreturns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in// construction, since the code is only stored at the end of the// constructor execution.uint256 size;
assembly {
size :=extcodesize(account)
}
return size >0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/functionsendValue(addresspayable recipient, uint256 amount) internal{
require(address(this).balance>= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/functionfunctionCall(address target, bytesmemory data) internalreturns (bytesmemory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/functionfunctionCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value
) internalreturns (bytesmemory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(address(this).balance>= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytesmemory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/functionfunctionStaticCall(address target, bytesmemory data) internalviewreturns (bytesmemory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/functionfunctionStaticCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalviewreturns (bytesmemory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytesmemory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/functionfunctionDelegateCall(address target, bytesmemory data) internalreturns (bytesmemory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/functionfunctionDelegateCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytesmemory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/functionverifyCallResult(bool success,
bytesmemory returndata,
stringmemory errorMessage
) internalpurereturns (bytesmemory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if presentif (returndata.length>0) {
// The easiest way to bubble the revert reason is using memory via assemblyassembly {
let returndata_size :=mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
Contract Source Code
File 3 of 26: Clones.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (proxy/Clones.sol)pragmasolidity ^0.8.0;/**
* @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
* deploying minimal proxy contracts, also known as "clones".
*
* > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
* > a minimal bytecode implementation that delegates all calls to a known, fixed address.
*
* The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
* (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
* deterministic method.
*
* _Available since v3.4._
*/libraryClones{
/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create opcode, which should never revert.
*/functionclone(address implementation) internalreturns (address instance) {
assembly {
let ptr :=mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance :=create(0, ptr, 0x37)
}
require(instance !=address(0), "ERC1167: create failed");
}
/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create2 opcode and a `salt` to deterministically deploy
* the clone. Using the same `implementation` and `salt` multiple time will revert, since
* the clones cannot be deployed twice at the same address.
*/functioncloneDeterministic(address implementation, bytes32 salt) internalreturns (address instance) {
assembly {
let ptr :=mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance :=create2(0, ptr, 0x37, salt)
}
require(instance !=address(0), "ERC1167: create2 failed");
}
/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/functionpredictDeterministicAddress(address implementation,
bytes32 salt,
address deployer
) internalpurereturns (address predicted) {
assembly {
let ptr :=mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
mstore(add(ptr, 0x38), shl(0x60, deployer))
mstore(add(ptr, 0x4c), salt)
mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
predicted :=keccak256(add(ptr, 0x37), 0x55)
}
}
/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/functionpredictDeterministicAddress(address implementation, bytes32 salt)
internalviewreturns (address predicted)
{
return predictDeterministicAddress(implementation, salt, address(this));
}
}
Contract Source Code
File 4 of 26: Context.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)pragmasolidity ^0.8.0;/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 5 of 26: Counters.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)pragmasolidity ^0.8.0;/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/libraryCounters{
structCounter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add// this feature: see https://github.com/ethereum/solidity/issues/4637uint256 _value; // default: 0
}
functioncurrent(Counter storage counter) internalviewreturns (uint256) {
return counter._value;
}
functionincrement(Counter storage counter) internal{
unchecked {
counter._value +=1;
}
}
functiondecrement(Counter storage counter) internal{
uint256 value = counter._value;
require(value >0, "Counter: decrement overflow");
unchecked {
counter._value = value -1;
}
}
functionreset(Counter storage counter) internal{
counter._value =0;
}
}
Contract Source Code
File 6 of 26: ERC165.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)pragmasolidity ^0.8.0;import"./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/abstractcontractERC165isIERC165{
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IERC165).interfaceId;
}
}
Contract Source Code
File 7 of 26: ERC721.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)pragmasolidity ^0.8.0;import"./IERC721.sol";
import"./IERC721Receiver.sol";
import"./extensions/IERC721Metadata.sol";
import"../../utils/Address.sol";
import"../../utils/Context.sol";
import"../../utils/Strings.sol";
import"../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/contractERC721isContext, ERC165, IERC721, IERC721Metadata{
usingAddressforaddress;
usingStringsforuint256;
// Token namestringprivate _name;
// Token symbolstringprivate _symbol;
// Mapping from token ID to owner addressmapping(uint256=>address) private _owners;
// Mapping owner address to token countmapping(address=>uint256) private _balances;
// Mapping from token ID to approved addressmapping(uint256=>address) private _tokenApprovals;
// Mapping from owner to operator approvalsmapping(address=>mapping(address=>bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/constructor(stringmemory name_, stringmemory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverride(ERC165, IERC165) returns (bool) {
return
interfaceId ==type(IERC721).interfaceId||
interfaceId ==type(IERC721Metadata).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/functionbalanceOf(address owner) publicviewvirtualoverridereturns (uint256) {
require(owner !=address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/functionownerOf(uint256 tokenId) publicviewvirtualoverridereturns (address) {
address owner = _owners[tokenId];
require(owner !=address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/functionname() publicviewvirtualoverridereturns (stringmemory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/functionsymbol() publicviewvirtualoverridereturns (stringmemory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/functiontokenURI(uint256 tokenId) publicviewvirtualoverridereturns (stringmemory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
stringmemory baseURI = _baseURI();
returnbytes(baseURI).length>0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/function_baseURI() internalviewvirtualreturns (stringmemory) {
return"";
}
/**
* @dev See {IERC721-approve}.
*/functionapprove(address to, uint256 tokenId) publicvirtualoverride{
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/functiongetApproved(uint256 tokenId) publicviewvirtualoverridereturns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/functionsetApprovalForAll(address operator, bool approved) publicvirtualoverride{
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/functionisApprovedForAll(address owner, address operator) publicviewvirtualoverridereturns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/functiontransferFrom(addressfrom,
address to,
uint256 tokenId
) publicvirtualoverride{
//solhint-disable-next-line max-line-lengthrequire(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId
) publicvirtualoverride{
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId,
bytesmemory _data
) publicvirtualoverride{
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/function_safeTransfer(addressfrom,
address to,
uint256 tokenId,
bytesmemory _data
) internalvirtual{
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/function_exists(uint256 tokenId) internalviewvirtualreturns (bool) {
return _owners[tokenId] !=address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/function_isApprovedOrOwner(address spender, uint256 tokenId) internalviewvirtualreturns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/function_safeMint(address to, uint256 tokenId) internalvirtual{
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/function_safeMint(address to,
uint256 tokenId,
bytesmemory _data
) internalvirtual{
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/function_mint(address to, uint256 tokenId) internalvirtual{
require(to !=address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] +=1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/function_burn(uint256 tokenId) internalvirtual{
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -=1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/function_transfer(addressfrom,
address to,
uint256 tokenId
) internalvirtual{
require(ERC721.ownerOf(tokenId) ==from, "ERC721: transfer of token that is not own");
require(to !=address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -=1;
_balances[to] +=1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/function_approve(address to, uint256 tokenId) internalvirtual{
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/function_setApprovalForAll(address owner,
address operator,
bool approved
) internalvirtual{
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/function_checkOnERC721Received(addressfrom,
address to,
uint256 tokenId,
bytesmemory _data
) privatereturns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytesmemory reason) {
if (reason.length==0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
returntrue;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/function_beforeTokenTransfer(addressfrom,
address to,
uint256 tokenId
) internalvirtual{}
}
Contract Source Code
File 8 of 26: ERC721Burnable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol)pragmasolidity ^0.8.0;import"../ERC721.sol";
import"../../../utils/Context.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/abstractcontractERC721BurnableisContext, ERC721{
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/functionburn(uint256 tokenId) publicvirtual{
//solhint-disable-next-line max-line-lengthrequire(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
Contract Source Code
File 9 of 26: ERC721Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Pausable.sol)pragmasolidity ^0.8.0;import"../ERC721.sol";
import"../../../security/Pausable.sol";
/**
* @dev ERC721 token with pausable token transfers, minting and burning.
*
* Useful for scenarios such as preventing trades until the end of an evaluation
* period, or having an emergency switch for freezing all token transfers in the
* event of a large bug.
*/abstractcontractERC721PausableisERC721, Pausable{
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/function_beforeTokenTransfer(addressfrom,
address to,
uint256 tokenId
) internalvirtualoverride{
super._beforeTokenTransfer(from, to, tokenId);
require(!paused(), "ERC721Pausable: token transfer while paused");
}
}
Contract Source Code
File 10 of 26: ERC721URIStorage.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721URIStorage.sol)pragmasolidity ^0.8.0;import"../ERC721.sol";
/**
* @dev ERC721 token with storage based token URI management.
*/abstractcontractERC721URIStorageisERC721{
usingStringsforuint256;
// Optional mapping for token URIsmapping(uint256=>string) private _tokenURIs;
/**
* @dev See {IERC721Metadata-tokenURI}.
*/functiontokenURI(uint256 tokenId) publicviewvirtualoverridereturns (stringmemory) {
require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");
stringmemory _tokenURI = _tokenURIs[tokenId];
stringmemory base = _baseURI();
// If there is no base URI, return the token URI.if (bytes(base).length==0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).if (bytes(_tokenURI).length>0) {
returnstring(abi.encodePacked(base, _tokenURI));
}
returnsuper.tokenURI(tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/function_setTokenURI(uint256 tokenId, stringmemory _tokenURI) internalvirtual{
require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/function_burn(uint256 tokenId) internalvirtualoverride{
super._burn(tokenId);
if (bytes(_tokenURIs[tokenId]).length!=0) {
delete _tokenURIs[tokenId];
}
}
}
Contract Source Code
File 11 of 26: FirstDibsERC2771Context.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.7;import'@openzeppelin/contracts/utils/Context.sol';
import'@openzeppelin/contracts/access/Ownable.sol';
/**
* @dev Context variant with ERC2771 support.
* copy/paste from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/metatx/ERC2771Context.sol
* but added a "setTrustedForwarder" function so we can deploy the forwarder contract after the token contract
*/abstractcontractFirstDibsERC2771ContextisContext, Ownable{
addressprivate _trustedForwarder;
constructor(address trustedForwarder) {
_trustedForwarder = trustedForwarder;
}
functionsetTrustedForwarder(address trustedForwarder) externalonlyOwner{
_trustedForwarder = trustedForwarder;
}
functionisTrustedForwarder(address forwarder) publicviewvirtualreturns (bool) {
return forwarder == _trustedForwarder;
}
function_msgSender() internalviewvirtualoverridereturns (address sender) {
if (isTrustedForwarder(msg.sender)) {
// The assembly code is more direct than the Solidity version using `abi.decode`.assembly {
sender :=shr(96, calldataload(sub(calldatasize(), 20)))
}
} else {
returnsuper._msgSender();
}
}
function_msgData() internalviewvirtualoverridereturns (bytescalldata) {
if (isTrustedForwarder(msg.sender)) {
returnmsg.data[:msg.data.length - 20];
} else {
returnsuper._msgData();
}
}
}
Contract Source Code
File 12 of 26: FirstDibsPayments.sol
//SPDX-License-Identifier: Unlicensedpragmasolidity 0.8.7;import'@openzeppelin/contracts/access/Ownable.sol';
import'./IFirstDibsRoyalties.sol';
import'./SplitForwarderFactory.sol';
contractFirstDibsPaymentsisIFirstDibsRoyalties, Ownable{
// default royalties to creators on secondary salesuint32publicoverride globalCreatorRoyaltyBasisPoints =1000;
/**
* @dev token ID mapping to payable alternate payment address for a creator
*/mapping(uint256=>addresspayable) private tokenPaymentAddresses;
/**
* @dev token ID mapping to royalty basis points
*/mapping(uint256=>uint32) private perTokenRoyalties;
/**
* @dev setter for global creator royalty rate
* @param royaltyBasisPoints new creator royalty rate
*/functionsetGlobalCreatorRoyaltyBasisPoints(uint32 royaltyBasisPoints)
externaloverrideonlyOwner{
require(royaltyBasisPoints <=10000, 'Value must be <= 10000');
require(royaltyBasisPoints >=200, 'Creator royalty cannot be lower than 2%');
globalCreatorRoyaltyBasisPoints = royaltyBasisPoints;
}
/**
* @dev set a new payment address for a token
* @param _tokenId token ID to set a new payment address for
* @param _paymentAddress new payment address
*
*/function_setTokenPaymentAddress(addresspayable _paymentAddress, uint256 _tokenId) internal{
tokenPaymentAddresses[_tokenId] = _paymentAddress;
}
/**
* @dev set per token royalties
* @param _tokenId token ID to set a individual royalties for
* @param _basisPoints royalty basis point
*/function_setPerTokenRoyalties(uint256 _tokenId, uint32 _basisPoints) internal{
require(_basisPoints <=3000, 'Per token royalty must be less than 30%');
perTokenRoyalties[_tokenId] = _basisPoints;
}
functionroyaltyInfo(uint256 _tokenId, uint256 _value)
externalviewoverridereturns (address _receiver, uint256 _royaltyAmount)
{
_receiver = tokenPaymentAddresses[_tokenId];
uint256 royaltyBasisPoints = globalCreatorRoyaltyBasisPoints;
if (perTokenRoyalties[_tokenId] !=0) {
royaltyBasisPoints = perTokenRoyalties[_tokenId];
}
_royaltyAmount = (_value * royaltyBasisPoints) /10000;
}
}
Contract Source Code
File 13 of 26: FirstDibsTokenV2.sol
//SPDX-License-Identifier: MITpragmasolidity 0.8.7;import'@openzeppelin/contracts/utils/Counters.sol';
import'@openzeppelin/contracts/access/AccessControl.sol';
import'@openzeppelin/contracts/access/Ownable.sol';
import'@openzeppelin/contracts/token/ERC721/ERC721.sol';
import'@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol';
import'@openzeppelin/contracts/token/ERC721/extensions/ERC721Pausable.sol';
import'@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol';
import'./IERC721CreatorV2.sol';
import'./FirstDibsPayments.sol';
import'./SplitForwarderFactory.sol';
import'./FirstDibsERC2771Context.sol';
contractFirstDibsTokenV2isERC721,
Ownable,
AccessControl,
ERC721Burnable,
ERC721Pausable,
ERC721URIStorage,
IERC721CreatorV2,
FirstDibsPayments,
FirstDibsERC2771Context,
SplitForwarderFactory{
usingCountersforCounters.Counter;
bytes32publicconstant MINTER_ROLE =keccak256('MINTER_ROLE');
bytes32publicconstant MINT_WITH_CREATOR =keccak256('MINT_WITH_CREATOR');
bytes32publicconstant MINTER_ROLE_ADMIN =keccak256('MINTER_ROLE_ADMIN');
/**
* @dev token ID mapping to payable creator address
*/mapping(uint256=>addresspayable) private tokenCreators;
/**
* @dev Owner address to token ID mapping. Allows the marketplace to
* manage tokens airdropped to creators
*/mapping(address=>mapping(uint256=>bool)) private approveAirdropForDibsMarketplace;
/**
* @dev Verified dibs marketplace
*/addresspublic dibsMarketplace;
/**
* @dev Emitted when `approved` enables or disables approval for dibsMarketplace to manage `tokenId`
*/eventApprovedDibsMarketplaceByAirdrop(addressindexed approved,
uint256indexed tokenId,
bool isApproved
);
/**
* @dev Auto-incrementing counter for token IDs
*/
Counters.Counter private tokenIds;
/**
* @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE`, `MINT_WITH_CREATOR`,
* and `MINTER_ROLE_ADMIN` to the account that deploys the contract.
* Also sets dibsMarketplace
*/constructor(stringmemory _name,
stringmemory _symbol,
address _splitForwarder,
address _splitPool,
address _trustedForwarder,
address _dibsMarketplace
)
ERC721(_name, _symbol)
FirstDibsERC2771Context(_trustedForwarder)
SplitForwarderFactory(_splitForwarder, _splitPool)
{
_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
_setupRole(MINTER_ROLE, _msgSender());
_setupRole(MINT_WITH_CREATOR, _msgSender());
_setupRole(MINTER_ROLE_ADMIN, _msgSender());
_setRoleAdmin(MINTER_ROLE, MINTER_ROLE_ADMIN);
dibsMarketplace = _dibsMarketplace;
}
/**
* @dev Internal function for setting the token's creator.
* @param _creator address of the creator of the token.
* @param _tokenId uint256 id of the token.
*/function_setTokenCreator(addresspayable _creator, uint256 _tokenId) private{
tokenCreators[_tokenId] = _creator;
}
/**
* @dev External function to get the token's creator
* @param _tokenId uint256 id of the token.
*/functiontokenCreator(uint256 _tokenId) externalviewoverridereturns (addresspayable) {
return tokenCreators[_tokenId];
}
/**
* @dev internal function that mints a token. Sets _creator to creator and owner
* @param _tokenURI string metadata URI of the token.
* @param _creator address of the creator of the token.
* @param _paymentAddress address to send royalty payments to
* @param _tokenRoyalty uint32 royalty basis points for a token
*/function_mint(stringmemory _tokenURI,
addresspayable _creator,
addresspayable _paymentAddress,
uint32 _tokenRoyalty
) internalreturns (uint256 newTokenId) {
tokenIds.increment();
newTokenId = tokenIds.current();
_safeMint(_creator, newTokenId);
_setTokenURI(newTokenId, _tokenURI);
_setTokenCreator(_creator, newTokenId);
_setTokenPaymentAddress(_paymentAddress, newTokenId);
if (_tokenRoyalty >0) {
_setPerTokenRoyalties(newTokenId, _tokenRoyalty);
}
}
/**
* @dev Public function that mints a token. Sets msg.sender to creator and owner and requires MINTER_ROLE
* @param _tokenURI uint256 metadata URI of the token.
*/functionmint(stringmemory _tokenURI) publicreturns (uint256) {
require(hasRole(MINTER_ROLE, _msgSender()), 'mint: must have MINTER_ROLE');
addresspayable _creator =payable(_msgSender());
return _mint(_tokenURI, _creator, _creator, 0);
}
/**
* @dev Admin only function that allows admin to mint a token with custom params, including creator
* Also approves the marketplace as an operator of the token on the creator's behalf.
* @param _tokenURI uint256 metadata URI of the token.
* @param _merkleRoot bytes32 merkle root to create a split for, this will take precedence over _paymentAddress
* @param _paymentAddress address custom payment address to send creator royalties to
* @param _tokenRoyalty uint32 custom royalty basis shares to set for creator royalties
* @param _creatorAddress address creator of the token
*/functionairdropMintToCreator(stringmemory _tokenURI,
bytes32 _merkleRoot,
addresspayable _paymentAddress,
uint32 _tokenRoyalty,
address _creatorAddress
) public{
require(
hasRole(MINT_WITH_CREATOR, _msgSender()) || hasRole(DEFAULT_ADMIN_ROLE, _msgSender()),
'airdropMintToCreator: must have MINT_WITH_CREATOR or DEFAULT_ADMIN_ROLE'
);
require(
_creatorAddress !=address(0),
'airdropMintToCreator: creator cannot be zero address'
);
address paymentAddress = _creatorAddress;
if (_merkleRoot !=0) {
paymentAddress = createSplitForwarder(_merkleRoot);
} elseif (_paymentAddress !=address(0)) {
paymentAddress = _paymentAddress;
}
uint256 tokenId = _mint(
_tokenURI,
payable(_creatorAddress),
payable(paymentAddress),
_tokenRoyalty
);
approveAirdropForDibsMarketplace[_creatorAddress][tokenId] =true;
emit ApprovedDibsMarketplaceByAirdrop(_creatorAddress, tokenId, true);
}
/**
* @dev Public function that allows addresses with MINTER_ROLE to mint a token with custom parameters
* @param _tokenURI uint256 metadata URI of the token.
* @param _merkleRoot bytes32 merkle root to create a split for, takes precedence over payment address
* @param _paymentAddress address custom payment address to send creator royalties to
* @param _tokenRoyalty uint32 custom royalty basis shares to set for creator royalties
* @param _approveDibsMarketplaceForAll bool if true, this and future tokens minted on this contract will be approved for the marketplace
* @param _approveDibsMarketplaceForOne bool if true, this token will be approved for the contracts marketplace address
*/functionmintWithParams(stringmemory _tokenURI,
bytes32 _merkleRoot,
addresspayable _paymentAddress,
uint32 _tokenRoyalty,
bool _approveDibsMarketplaceForAll,
bool _approveDibsMarketplaceForOne
) public{
require(hasRole(MINTER_ROLE, _msgSender()), 'mintWithParams: must have MINTER_ROLE');
address paymentAddress = _msgSender();
if (_merkleRoot !=0) {
paymentAddress = createSplitForwarder(_merkleRoot);
} elseif (_paymentAddress !=address(0)) {
paymentAddress = _paymentAddress;
}
uint256 newTokenId = _mint(
_tokenURI,
payable(_msgSender()),
payable(paymentAddress),
_tokenRoyalty
);
if (_approveDibsMarketplaceForAll) {
setApprovalForAll(dibsMarketplace, true);
} elseif (_approveDibsMarketplaceForOne) {
approve(dibsMarketplace, newTokenId);
}
}
/**
* @dev Uses ERC721 _safeTransfer but also allows marketplaces to transfer airdropped tokens
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId
) publicoverride{
require(
_isOwnerApprovedOrMarketplace(_msgSender(), tokenId),
'FirstDibsTokenV2: transfer caller is not owner nor approved nor verified'
);
_safeTransfer(from, to, tokenId, '');
}
/**
* @dev Returns whether `operator` is allowed to manage `tokenId`. If token owner => token ID is in the
* approvedForDibsMarketplace mapping then dibsMarketplace is allowed to manage the token.
*/function_isOwnerApprovedOrMarketplace(address operator, uint256 tokenId)
internalviewreturns (bool)
{
require(_exists(tokenId), 'FirstDibsTokenV2: operator query for nonexistent token');
address tokenOwner = ERC721.ownerOf(tokenId);
return (operator == tokenOwner ||
getApproved(tokenId) == operator ||
isApprovedForAll(tokenOwner, operator) ||// Allow the marketplace to manage the token if token has been airdropped to the creator// This should only be true for owners that had tokens airdropped to them using airdropMintToCreator.
(approveAirdropForDibsMarketplace[tokenOwner][tokenId] && operator == dibsMarketplace));
}
/**
* @dev Returns whether `operator` is allowed to manage `tokenId`. If token owner => token ID is in the
* approvedForDibsMarketplace mapping then dibsMarketplace is allowed to manage the token.
*
*/functionisOwnerApprovedOrMarketplace(address operator, uint256 tokenId)
externalviewreturns (bool)
{
return _isOwnerApprovedOrMarketplace(operator, tokenId);
}
functionsetDibsMarketplace(address _dibsMarketplace) external{
require(
hasRole(DEFAULT_ADMIN_ROLE, _msgSender()),
'setDibsMarketplace: must have DEFAULT_ADMIN_ROLE'
);
dibsMarketplace = _dibsMarketplace;
}
/**
* @dev Pauses all token transfers.
* See {ERC721Pausable} and {Pausable-_pause}.
* Requirements: the caller must have the `DEFAULT_ADMIN_ROLE`.
*/functionpause() public{
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), 'pause: must have DEFAULT_ADMIN_ROLE');
_pause();
}
/**
* @dev Unpauses all token transfers.
* See {ERC721Pausable} and {Pausable-_unpause}.
* Requirements: the caller must have the `DEFAULT_ADMIN_ROLE`.
*/functionunpause() public{
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), 'unpause: must have DEFAULT_ADMIN_ROLE');
_unpause();
}
// The following functions are overrides required by Solidity./**
* @dev Must override this function since both ERC721, ERC721Pausable define it
* Checks that the contract isn't paused before doing a transfer
*/function_beforeTokenTransfer(address _from,
address _to,
uint256 _tokenId
) internaloverride(ERC721, ERC721Pausable) whenNotPaused{
super._beforeTokenTransfer(_from, _to, _tokenId);
}
function_burn(uint256 tokenId) internaloverride(ERC721, ERC721URIStorage) {
super._burn(tokenId);
}
functiontokenURI(uint256 tokenId)
publicviewoverride(ERC721, ERC721URIStorage)
returns (stringmemory)
{
returnsuper.tokenURI(tokenId);
}
functionsupportsInterface(bytes4 interfaceId)
publicviewoverride(ERC721, AccessControl)
returns (bool)
{
returnsuper.supportsInterface(interfaceId);
}
function_msgSender()
internalviewoverride(Context, FirstDibsERC2771Context)
returns (address sender)
{
returnsuper._msgSender();
}
function_msgData()
internalviewoverride(Context, FirstDibsERC2771Context)
returns (bytescalldata)
{
returnsuper._msgData();
}
}
Contract Source Code
File 14 of 26: IAccessControl.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)pragmasolidity ^0.8.0;/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/interfaceIAccessControl{
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/eventRoleAdminChanged(bytes32indexed role, bytes32indexed previousAdminRole, bytes32indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/eventRoleGranted(bytes32indexed role, addressindexed account, addressindexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/eventRoleRevoked(bytes32indexed role, addressindexed account, addressindexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/functionhasRole(bytes32 role, address account) externalviewreturns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/functiongetRoleAdmin(bytes32 role) externalviewreturns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functiongrantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functionrevokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/functionrenounceRole(bytes32 role, address account) external;
}
Contract Source Code
File 15 of 26: IERC165.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)pragmasolidity ^0.8.0;/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/interfaceIERC165{
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/functionsupportsInterface(bytes4 interfaceId) externalviewreturns (bool);
}
Contract Source Code
File 16 of 26: IERC721.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)pragmasolidity ^0.8.0;import"../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/interfaceIERC721isIERC165{
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/eventTransfer(addressindexedfrom, addressindexed to, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/eventApproval(addressindexed owner, addressindexed approved, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/eventApprovalForAll(addressindexed owner, addressindexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/functionbalanceOf(address owner) externalviewreturns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functionownerOf(uint256 tokenId) externalviewreturns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/functiontransferFrom(addressfrom,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/functionapprove(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functiongetApproved(uint256 tokenId) externalviewreturns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/functionsetApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/functionisApprovedForAll(address owner, address operator) externalviewreturns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId,
bytescalldata data
) external;
}
Contract Source Code
File 17 of 26: IERC721CreatorV2.sol
//SPDX-License-Identifier: BSD 3-Clausepragmasolidity 0.8.7;/**
* @title IERC721 Non-Fungible Token Creator basic interface
* @dev Interop with other systems supporting this interface
* @notice Original license and source here: https://github.com/Pixura/pixura-contracts
*/interfaceIERC721CreatorV2{
/**
* @dev Gets the creator of the _tokenId
* @param _tokenId uint256 ID of the token
* @return address of the creator of _tokenId
*/functiontokenCreator(uint256 _tokenId) externalviewreturns (addresspayable);
}
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)pragmasolidity ^0.8.0;/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/interfaceIERC721Receiver{
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/functiononERC721Received(address operator,
addressfrom,
uint256 tokenId,
bytescalldata data
) externalreturns (bytes4);
}
Contract Source Code
File 20 of 26: IFirstDibsRoyalties.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.7;/** @title IFirstDibsRoyalties
* @dev Interface for the ERC2981 Token Royalty standard, as well as the rarible schema
*/interfaceIFirstDibsRoyalties{
/**
* @dev getter & setter for current creator royalty basis points
*/functionglobalCreatorRoyaltyBasisPoints() externalviewreturns (uint32);
functionsetGlobalCreatorRoyaltyBasisPoints(uint32 _royaltyRate) external;
/**
* @dev EIP-2981 royalty standard https://eips.ethereum.org/EIPS/eip-2981
* @param _tokenId token ID to receive royalty info on
* @param _value amount to calculate royalty for
*/functionroyaltyInfo(uint256 _tokenId, uint256 _value)
externalviewreturns (address _receiver, uint256 _royaltyAmount);
}
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)pragmasolidity ^0.8.0;import"../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/modifieronlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
require(newOwner !=address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/function_transferOwnership(address newOwner) internalvirtual{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 24 of 26: Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)pragmasolidity ^0.8.0;import"../utils/Context.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/abstractcontractPausableisContext{
/**
* @dev Emitted when the pause is triggered by `account`.
*/eventPaused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/eventUnpaused(address account);
boolprivate _paused;
/**
* @dev Initializes the contract in unpaused state.
*/constructor() {
_paused =false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/functionpaused() publicviewvirtualreturns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/modifierwhenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/modifierwhenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/function_pause() internalvirtualwhenNotPaused{
_paused =true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/function_unpause() internalvirtualwhenPaused{
_paused =false;
emit Unpaused(_msgSender());
}
}
Contract Source Code
File 25 of 26: SplitForwarderFactory.sol
//SPDX-License-Identifier: Unlicensedpragmasolidity 0.8.7;import'@openzeppelin/contracts/proxy/Clones.sol';
import'@openzeppelin/contracts/utils/Address.sol';
import'@openzeppelin/contracts/access/Ownable.sol';
import'./ISplitForwarder.sol';
import'./ISplitForwarderFactory.sol';
contractSplitForwarderFactoryisISplitForwarderFactory, Ownable{
usingClonesforaddress;
usingAddressforaddress;
/**
* ========================
* #Public state variables
* ========================
*/addresspublicoverride splitForwarder;
addresspublicoverride splitPool;
/**
* ========================
* constructor
* ========================
* @param _splitForwarder address for split forwarder implementation contract
* @param _splitPool address for split pool contract
*/constructor(address _splitForwarder, address _splitPool) {
splitForwarder = _splitForwarder;
splitPool = _splitPool;
}
/**
* @dev setter for split forwarder address
* @param _splitForwarder address for the split forwarder contract
*/functionsetSplitForwarder(address _splitForwarder) externalonlyOwner{
require(_splitForwarder !=address(0), 'cannot be zero address');
splitForwarder = _splitForwarder;
}
/**
* @dev setter for split pool address
* @param _splitPool address for the split forwarder contract
*/functionsetSplitPool(address _splitPool) externalonlyOwner{
require(_splitPool !=address(0), 'cannot be zero address');
splitPool = _splitPool;
}
/**
* @dev return the predicted/existing split forwarder address for a given merkle root
* @param _merkleRoot merkle root to lookup the address for
*/functiongetSplitForwarderAddress(bytes32 _merkleRoot)
externalviewoverridereturns (address)
{
require(splitForwarder !=address(0), 'splitForwarder must be set');
return splitForwarder.predictDeterministicAddress(keccak256(abi.encode(_merkleRoot)));
}
/**
* @dev create a SplitForwarder proxy for a given merkle root
* @param _merkleRoot merkle root which to deploy a split forwarder proxy for
*/functioncreateSplitForwarder(bytes32 _merkleRoot) publicoverridereturns (address _clone) {
require(
splitForwarder !=address(0) && splitPool !=address(0),
'splitForwarder & splitPool must be set'
);
_clone = splitForwarder.predictDeterministicAddress(keccak256(abi.encode(_merkleRoot)));
if (!_clone.isContract()) {
splitForwarder.cloneDeterministic(keccak256(abi.encode(_merkleRoot)));
ISplitForwarder(_clone).initialize(_merkleRoot, splitPool);
}
}
}
Contract Source Code
File 26 of 26: Strings.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)pragmasolidity ^0.8.0;/**
* @dev String operations.
*/libraryStrings{
bytes16privateconstant _HEX_SYMBOLS ="0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/functiontoString(uint256 value) internalpurereturns (stringmemory) {
// Inspired by OraclizeAPI's implementation - MIT licence// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.solif (value ==0) {
return"0";
}
uint256 temp = value;
uint256 digits;
while (temp !=0) {
digits++;
temp /=10;
}
bytesmemory buffer =newbytes(digits);
while (value !=0) {
digits -=1;
buffer[digits] =bytes1(uint8(48+uint256(value %10)));
value /=10;
}
returnstring(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/functiontoHexString(uint256 value) internalpurereturns (stringmemory) {
if (value ==0) {
return"0x00";
}
uint256 temp = value;
uint256 length =0;
while (temp !=0) {
length++;
temp >>=8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/functiontoHexString(uint256 value, uint256 length) internalpurereturns (stringmemory) {
bytesmemory buffer =newbytes(2* length +2);
buffer[0] ="0";
buffer[1] ="x";
for (uint256 i =2* length +1; i >1; --i) {
buffer[i] = _HEX_SYMBOLS[value &0xf];
value >>=4;
}
require(value ==0, "Strings: hex length insufficient");
returnstring(buffer);
}
}