Contract Name:
SubdomainFactory
Contract Source Code:
//SPDX-License-Identifier: MIT
//Author: @hodl_pcc << twitter
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@ensdomains/ens-contracts/contracts/registry/ENS.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "./registration-rules.sol";
import "./interfaces/IERC2981.sol";
import "./interfaces/IENSToken.sol";
import "./interfaces/IManager.sol";
import "./interfaces/IMetadata.sol";
import "./interfaces/IRegister.sol";
import "./interfaces/IENSAdmin.sol";
import "./interfaces/IReverseResolver.sol";
import "./interfaces/ICCIPResolver.sol";
import "./metadata-provider.sol";
import "./ENSEnumerable.sol";
import "./EnsTldWrapper.sol";
pragma solidity ^0.8.13;
struct EnsInfo {
uint256 id;
string domain;
uint256 royalty;
address owner;
bool locked;
uint256 price;
string image;
bytes32 domainHash;
address currentLocation;
uint256 expiry;
}
contract SubdomainFactory is IManager, IERC721Receiver, Ownable, ERC165, ERC721, IERC2981, ENSEnumerable {
using SafeMath for uint256;
using Strings for uint256;
event DepositEns(address indexed _from, uint256 indexed _id, string _domainLabel);
event TransferEnsOwnership(address indexed _from, address indexed _to, uint256 indexed _id);
event WithdrawEns(address indexed _to, uint256 indexed _id);
event WithdrawFunds(address indexed _addr, uint256 _funds);
event UpdateDomainDefaultImage(address indexed _addr, uint256 indexed _id, string _image);
event UpdateDomainDefaultMintPrice(address indexed _addr, uint256 indexed _id, uint256 _defaultPriceInWei);
event UpdateDomainRoyaltyPercentage(address indexed _addr, uint256 indexed _id, uint256 _percentage);
event UpdateDomainRegistrationRules(address indexed _addr, uint256 indexed _id, address indexed _registrationStrategy);
event LockEnsDomain(address indexed _addr, uint256 indexed _id);
event SubdomainRegistered(address indexed _addr, uint256 indexed _id, uint256 indexed _subdomainId, string _subDomain);
event AddrChanged(bytes32 indexed node, address a);
address constant ENS_ADDRESS = 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e;
address constant PUBLIC_RESOLVER_ADDRESS = 0x4976fb03C32e5B8cfe2b6cCB31c09Ba78EBaBa41;
address constant REVERSE_RESOLVER_ADDRESS = 0x084b1c3C81545d370f3634392De611CaaBFf8148;
address constant ENS_TOKEN_ADDRESS = 0x57f1887a8BF19b14fC0dF6Fd9B2acc9Af147eA85;
IReverseResolver public ReverseResolver = IReverseResolver(REVERSE_RESOLVER_ADDRESS);
IENSAdmin public PublicResolver = IENSAdmin(PUBLIC_RESOLVER_ADDRESS);
IENSToken public EnsToken = IENSToken(ENS_TOKEN_ADDRESS);
ENS private ens = ENS(ENS_ADDRESS);
EnsTldWrapper public EnsWrapper;
IRegister public DefaultRegister;
ICCIPResolver public CCIPResolver;
bool public CCIPResolverLocked;
IMetadata public MetaData;
uint256 private currentId;
uint256 public ContractOwnerPrimaryRoyalties = 2;
uint256 public MinDomainExpiry = 90 days;
mapping(uint256 => address) public TokenOwnerMap;
mapping(uint256 => bool) public TokenLocked;
mapping(bytes32 => uint256) public HashToIdMap;
mapping(uint256 => bytes32) public IdToHashMap;
mapping(uint256 => uint256) public IdToOwnerId;
mapping(uint256 => string) public IdToLabelMap;
mapping(uint256 => IRegister) public IdToRegisterMap;
mapping(uint256 => bool) public IdToUseCCIPMap;
mapping(address => mapping(uint256 => address)) public RedirectAddress;
mapping(bytes32 => mapping(string => string)) public texts;
mapping(uint256 => string) public IdToDomain;
mapping(uint256 => uint256) public IdRoyaltyMap;
mapping(uint256 => string) public IdImageMap;
mapping(uint256 => uint256) public DefaultMintPrice;
mapping(address => uint256) public OwnerFunds;
uint256 public ContractOwnerFunds;
event TextChanged(bytes32 indexed node, string indexed indexedKey, string key);
uint256 public DepositCost = 0.1 ether;
constructor() ERC721("ENS sub-domains", "ESF"){
MetaData = new MetadataProviderV1(this);
DefaultRegister = new RegistrationRulesV1(this);
EnsWrapper = new EnsTldWrapper(this);
EnsWrapper.transferOwnership(msg.sender); //just so can update metadata link
}
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4){
require(address(this) == operator, "only transfer from contract address");
return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
}
fallback() payable external {
ContractOwnerFunds += msg.value;
}
receive() payable external {
ContractOwnerFunds += msg.value;
}
function withdrawEns(uint256 _id) external tokenOwner(_id) {
require(!TokenLocked[_id], "token is locked");
EnsToken.safeTransferFrom(address(this), msg.sender, _id);
EnsWrapper.burn(_id);
_beforeTLDTransfer(msg.sender, address(0), _id);
emit WithdrawEns(msg.sender, _id);
}
function depositEns(string calldata _label, uint256 _royalty, uint256 _mintPrice, string calldata _defaultImageUri) payable external {
depositEns(_label, _royalty, _mintPrice, _defaultImageUri, DefaultRegister, false);
}
//only pay for the first deposit of a token.
function getDepositCost(uint256 _id) public view returns(uint256) {
return TokenOwnerMap[_id] == address(0) ? DepositCost : 0;
}
function getSubdomainCost(uint256 _tokenId, string calldata _label, address _addr, bytes32[] calldata _proofs) external view returns (uint256){
require(EnsToken.ownerOf(_tokenId) == address(this), "token not in contract");
return IdToRegisterMap[_tokenId].mintPrice(_tokenId, _label, _addr, _proofs);
}
///Deposit the ENS token and register it for sub-domain creation
///This costs the fixed amount that is set by the contract owner
///@param _label label of the .eth domain that is being deposited
// the id is worked out from the text
///@param _royalty Royalty % should be integer 0 - 10
///@param _mintPrice should be more than 0.01 ether
function depositEns(string calldata _label, uint256 _royalty, uint256 _mintPrice, string calldata _defaultImageUri, IRegister _registrationStrategy, bool _useCCIP) payable public {
uint256 id = getIdFromLabel(_label);
require(msg.value == getDepositCost(id), "incorrect ether");
require(EnsToken.nameExpires(id) > (block.timestamp.add(MinDomainExpiry)), "domain expires too early");
EnsToken.reclaim(id, address(this));
bytes32 domainHash = getDomainHash(_label);
if (ens.resolver(domainHash) != address(PublicResolver)
&& (!_useCCIP || address(CCIPResolver) == address(0))){
ens.setResolver(domainHash, address(PublicResolver));
}
//if resolver is already set to public and _useCCIP is false then do nothing
if (_useCCIP && address(CCIPResolver) != address(0)){
ens.setResolver(domainHash, address(this));
IdToUseCCIPMap[id] = true;
}
EnsToken.safeTransferFrom(msg.sender, address(this), id);
TokenOwnerMap[id] = msg.sender;
IdToDomain[id] = _label;
IdToRegisterMap[id] = _registrationStrategy;
ContractOwnerFunds = ContractOwnerFunds.add(msg.value);
if(_royalty > 0){
setRoyaltyPercent(id, _royalty);
}
if(_mintPrice > 0){
setMintPrice(id, _mintPrice);
}
if(bytes(_defaultImageUri).length > 0){
setSubdomainImageUri(id, _defaultImageUri);
}
IdToRegisterMap[id] = _registrationStrategy;
emit UpdateDomainRegistrationRules(msg.sender, id, address(_registrationStrategy));
emit DepositEns(msg.sender, id, _label);
//if the token has expired then it may be redeposited
if(EnsWrapper.exists(id)){
EnsWrapper.burn(id);
TokenLocked[id] = false;
_beforeTLDTransfer(msg.sender, address(0), id);
}
EnsWrapper.mint(msg.sender, id);
_beforeTLDTransfer(address(0), msg.sender, id);
}
///helper method for getting ens id from the domain label
function getIdFromLabel(string calldata _label) public pure returns(uint256 id) {
bytes32 labelHash = keccak256(abi.encodePacked(_label));
id = uint256(labelHash);
}
///function to register sub-domain
///@param _id token id of the parent ens domain
///@param _label label for the subdomain, should be lower-case, numeric not uppercase
function registerSubdomain(uint256 _id, string calldata _label, bytes32[] calldata _proofs) payable public {
address owner = TokenOwnerMap[_id];
//owner can always mint sub-domains of their TLD
if (msg.sender != owner){
//use ID specific registration strategy
//can be used for whitelist minting / payment strategy / label exclusion etc
require(IdToRegisterMap[_id].canRegister(_id, _label, msg.sender, msg.value, _proofs));
}
uint256 ownerCut;
if (msg.value > 0){
//owner primary cut is maximum 5% (set at 2% for contract deployment, unlikely to change)
ownerCut = (msg.value / 100) * ContractOwnerPrimaryRoyalties;
ContractOwnerFunds = ContractOwnerFunds.add(ownerCut);
OwnerFunds[owner] = OwnerFunds[owner].add(msg.value - ownerCut);
}
register(_id, _label, msg.sender);
}
function register(uint256 _tokenId, string memory _label, address _addr) private {
bytes32 encoded_label = keccak256(abi.encodePacked(_label));
bytes32 domainHash = getDomainHash(IdToDomain[_tokenId]);
bytes32 hashed = keccak256(abi.encodePacked(domainHash, encoded_label));
//we only check this contract for minted sub-domains. If you wish to protect sub-domains
//registered externally then these will require specifying in some custom registration rules
require(HashToIdMap[hashed] == 0, "sub-domain already exists");
require(!ens.recordExists(hashed), "sub-domain already exists outside of esf.eth");
//start from ID 1, this is because of the above check ^^
uint256 id = ++currentId;
IdToHashMap[id] = hashed;
HashToIdMap[hashed] = id;
_safeMint(_addr, id);
IdToOwnerId[id] = _tokenId; //_tokenId is the parent ens id
IdToLabelMap[id] = _label;
ens.setSubnodeRecord(domainHash, encoded_label, address(this), address(this), 0);
emit SubdomainRegistered(_addr, _tokenId, id, name(hashed));
}
///@param node nodes representaion of the full domain
///@param key key of the key:value pair to return
///@return value of the key. avatar is default but it can be overridden
function rawText(bytes32 node, string calldata key) public view returns (string memory) {
string memory value = texts[node][key];
if(keccak256(abi.encodePacked(key)) == keccak256("avatar") && bytes(value).length == 0){
uint256 id = HashToIdMap[node];
uint256 owner = IdToOwnerId[id];
value = IdImageMap[owner];
}
return value;
}
///interface method
///@param node nodes representaion of the full domain
///@param key key of the key:value pair to return
///@return value of the key. avatar is default but it can be overridden
function text(bytes32 node, string calldata key) external view returns (string memory) {
uint256 id = HashToIdMap[node];
//added ccip proxy resolver to "future proof"
if (shouldUseCcipResolver(IdToOwnerId[id])) {
return CCIPResolver.text(node, key);
}
else {
return rawText(node, key);
}
}
//standard interface method
function addr(bytes32 nodeID) public view returns (address) {
uint256 id = HashToIdMap[nodeID];
//added in ccip resolver to "future proof"
if (shouldUseCcipResolver(IdToOwnerId[id])) {
return CCIPResolver.addr(nodeID);
}
else {
address owner = ownerOf(id);
address redirect = RedirectAddress[owner][id];
return (redirect == address(0)) ? owner : redirect;
}
}
function shouldUseCcipResolver(uint256 _id) private view returns(bool){
//0 for wildcard entries.. will need to add extra logic inside of registration
//rules to stop off-chain sub-domains being reregistered
return (IdToUseCCIPMap[_id] || _id == 0)
&& address(CCIPResolver) != address(0);
}
function name(bytes32 node) view public returns (string memory){
uint256 id = HashToIdMap[node];
uint256 owner = IdToOwnerId[id];
//added in ccip resolver to "future proof"
if (shouldUseCcipResolver(owner)) {
return CCIPResolver.name(node);
}
else {
string memory domain = IdToDomain[owner];
string memory label = IdToLabelMap[id];
return string(abi.encodePacked(label,".",domain,".eth"));
}
}
function supportsInterface(bytes4 interfaceId) public view override(IERC165, ERC165, ERC721) returns(bool){
return super.supportsInterface(interfaceId)
|| interfaceId == 0x3b3b57de //addr
|| interfaceId == 0x59d1d43c //text
|| interfaceId == 0x691f3431 //name
|| interfaceId == 0x2a55205a //royalties
|| interfaceId == 0x01ffc9a7; //supportsInterface << [inception];
}
///this is the correct method for creating a 2 level ENS namehash
function getDomainHash(string memory _domain) public pure returns (bytes32 namehash) {
namehash = 0x0;
namehash = keccak256(abi.encodePacked(namehash, keccak256(abi.encodePacked('eth'))));
namehash = keccak256(abi.encodePacked(namehash, keccak256(abi.encodePacked(_domain))));
}
function tokenURI(uint256 tokenId) public view override(ERC721) returns(string memory){
require(_exists(tokenId), "token does not exist");
return MetaData.tokenURI(tokenId);
}
//user can set an address redirect for any delegated address. The redirect is only active
//whilst the NFT is in the wallet that set it. Set to `0x0000000000000000000000000000000000000000`
//to remove redirect
function setRedirect(uint256 _id, address _to) external {
//token checked if it exists in _isApprovedOrOwner method
require(_isApprovedOrOwner(msg.sender, _id), "not approved");
address owner = ownerOf(_id);
RedirectAddress[owner][_id] = _to;
emit AddrChanged(IdToHashMap[_id], _to == address(0) ? owner : _to);
}
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal override {
emit AddrChanged(IdToHashMap[tokenId], RedirectAddress[to][tokenId] == address(0) ? to : RedirectAddress[to][tokenId]);
}
function setText(bytes32 node, string calldata key, string calldata value) external {
uint256 token_id = HashToIdMap[node];
require(_exists(token_id), "token does not exist");
require(_isApprovedOrOwner(msg.sender, token_id), "not approved");
texts[node][key] = value;
emit TextChanged(node, key, key);
}
///token owner functions
///This is the royalty percentage for secondary sales. It's set per sub-domain
///owner of the TLD can set this 0-10%, this works on all marketplaces that support
///on-chain royalties :-)
function setRoyaltyPercent(uint256 _id, uint256 _percent) public tokenOwner(_id) {
require(_percent <= 10, "max 10 percent");
IdRoyaltyMap[_id] = _percent;
emit UpdateDomainRoyaltyPercentage(msg.sender, _id, _percent);
}
///token owner can set mint price. 0 mint price means that it is not for minting by
///anyone apart from the token owner. Additional logic for mint price can be applied
///in custom registration-rules that can be applied to any ENS domain. eg. you want to charge
///more for shorter labels / give certain wallets reduced price, many other ideas
function setMintPrice(uint256 _id, uint256 _price) public tokenOwner(_id) {
require(_price >= 0.01 ether || _price == 0, "min 0.01 ether");
DefaultMintPrice[_id] = _price;
emit UpdateDomainDefaultMintPrice(msg.sender, _id, _price);
}
///this is the default image that will display when users mint a sub-domain. This can be overridden
///by the user setting a value for the 'avatar' key in their text mappings
function setSubdomainImageUri(uint256 _id, string calldata _uri) tokenOwner(_id) public {
IdImageMap[_id] = _uri;
emit UpdateDomainDefaultImage(msg.sender, _id, _uri);
}
///proxy method so that the TLD owner can still manage various public resolver
///functions for their token despite it being contained in this contract
function setTldAddr(uint256 _id, uint256 coinType, bytes memory a) tokenOwner(_id) public {
bytes32 node = getDomainHash(IdToDomain[_id]);
PublicResolver.setAddr(node, coinType, a);
}
function setTldAddr(uint256 _id, address a) tokenOwner(_id) public {
bytes32 node = getDomainHash(IdToDomain[_id]);
PublicResolver.setAddr(node, a);
}
function setTldDNSRecords(uint256 _id, bytes memory data) tokenOwner(_id) public {
bytes32 node = getDomainHash(IdToDomain[_id]);
PublicResolver.setDNSRecords(node, data);
}
function setTldText(uint256 _id, string memory key, string memory value) tokenOwner(_id) public {
bytes32 node = getDomainHash(IdToDomain[_id]);
PublicResolver.setText(node, key, value);
}
///use this method to update the registration stategy for any ENS domains. Can only be called by the
///account that owns the tokens. Can update multiple at the same time.
function updateRegistrationStrategy(uint256[] calldata _ids, IRegister _registrationStrategy) public {
for(uint256 i; i < _ids.length;){
require(TokenOwnerMap[_ids[i]] == msg.sender, "not owner");
IdToRegisterMap[_ids[i]] = _registrationStrategy;
emit UpdateDomainRegistrationRules(msg.sender, _ids[i], address(_registrationStrategy));
//we do this because it's the most gas efficient way of doing the loop
unchecked { ++i; }
}
}
///I don't really like ccip, but need to make sure we provide a way of updating this in the future if it
///matures to a usable state.
function updateUseCCIPResolver(uint256[] calldata _ids, bool _shouldUse) public {
require(address(CCIPResolver) != address(0), "ccip resolver not set");
for(uint256 i; i < _ids.length;){
require(TokenOwnerMap[_ids[i]] == msg.sender, "not owner");
IdToUseCCIPMap[_ids[i]] = _shouldUse;
ens.setResolver(getDomainHash(IdToDomain[_ids[i]])
, _shouldUse ? address(this) : address(PublicResolver)
);
//we do this because it's the most gas efficient way of doing the loop
unchecked { ++i; }
}
}
///this action cannot be undone. locked domain will remain permenantly locked in the contract unless
///it expires (remember that anyone can renew a domain, so it is our intention that project funds could be
///redirected to fund renewals for popular domains)
function lockDomain(uint256 _id) tokenOwner(_id) public {
require(EnsToken.ownerOf(_id) == address(this), "token not in contract");
require(!TokenLocked[_id], "token already locked");
TokenLocked[_id] = true;
emit LockEnsDomain(msg.sender, _id);
}
///end token owner functions
//
// ------------------------------------
///if the "wrapped" ens domain is transferred then this method is called which will change the ownership
///of the domain for admin and payout purposes. We can't just link to the owner of this token because
///it is burned when the ENS is withdrawn.
function transferDomainOwnership(uint256 _id, address _newOwner) external {
require(address(EnsWrapper) == msg.sender, "only through EnsWrapper transfer");
address currentOwner = TokenOwnerMap[_id];
TokenOwnerMap[_id] = _newOwner;
_beforeTLDTransfer(currentOwner, _newOwner, _id);
emit TransferEnsOwnership(currentOwner, _newOwner, _id);
}
///this is for the ENS owners to withdraw primary sales. It's collected by wallet not by ID
///so that only 1 withdrawal is required and if a domain is sold then previous sales can still be
///claimed by the original owner.
function withdrawPrimarySalesFunds() external {
require(OwnerFunds[msg.sender] > 0, "no funds to claim");
//we do this like this to prevent re-entrency
uint256 balance = OwnerFunds[msg.sender];
OwnerFunds[msg.sender] = 0;
payable(msg.sender).transfer(balance);
emit WithdrawFunds(msg.sender, balance);
}
///contract owner functions
///contract owner to set default registration strategy. This will not alter any exsting domains that
///are using the current default strategy only future registered ones. currently the default
///registration strategy is quite basic so there is lots of room to be able to improve this in the future
function updateDefaultRegister(IRegister _registrationStrategy) external onlyOwner {
DefaultRegister = _registrationStrategy;
}
///contract owner withdraw for any primary sale commission /
function contractOwnerWithdrawFunds() external onlyOwner {
require(ContractOwnerFunds > 0, "no funds to claim");
//we do this like this to prevent re-entrency
uint256 balance = ContractOwnerFunds;
ContractOwnerFunds = 0;
payable(msg.sender).transfer(balance);
}
function setCCIPResolver(ICCIPResolver _ccip) onlyOwner external {
require(!CCIPResolverLocked, "resolver already locked");
CCIPResolver = _ccip;
}
function setCCIPLocked() onlyOwner external {
require(!CCIPResolverLocked, "resolver already locked");
CCIPResolverLocked = true;
}
function setMetadataContract(IMetadata _metadata) onlyOwner external {
MetaData = _metadata;
}
function setDepositCost(uint256 _priceInWei) onlyOwner external {
DepositCost = _priceInWei;
}
///contract owner percentage for primary sales. this cannot be set to higher than 5%
///probably set to 2% when the contract is initially deployed
function setContractOwnerPrimaryRoyalty(uint256 _percent) onlyOwner external {
require(_percent <= 5, "max 5 percent");
ContractOwnerPrimaryRoyalties = _percent;
}
//set the minimum requirement for a deposited domain to expire. 30 days seems low, default is 90 days
function setMinDomainExpiryForDeposit(uint256 _minNumberOfDays) onlyOwner external {
MinDomainExpiry = (_minNumberOfDays * 1 days);
require(MinDomainExpiry >= 30 days, "must be minimum of 30 days");
}
///underutilised ENS functionality. Naming a contract using the reverse registrar
function setContractName(string calldata _name) onlyOwner external {
ReverseResolver.setName(_name);
}
/// <end> contract owner functions
//
// ------------------------------------
///IERC2981 interface method for on-chain royalty. This is so we can charge different royalty %
///per ENS domain and also pay out to the contract owner. This standard is only supported by good reputable
///ethereum marketplaces
function royaltyInfo(
uint256 _tokenId,
uint256 _salePrice
) external view returns (
address receiver,
uint256 royaltyAmount
){
uint256 parentId = IdToOwnerId[_tokenId];
address owner = TokenOwnerMap[parentId];
uint256 percent = IdRoyaltyMap[parentId];
uint256 royalty = _salePrice.div(100).mul(percent);
return (owner, royalty);
}
///read method to get some information for the UI
function getTokenInfo(uint256[] calldata _ids) external view returns(EnsInfo[] memory){
EnsInfo[] memory infos = new EnsInfo[](_ids.length);
for(uint256 i; i < _ids.length;){
infos[i] = getInfo(_ids[i]);
unchecked { ++i; }
}
return infos;
}
function getInfo(uint256 _id) private view returns(EnsInfo memory){
EnsInfo memory info;
info.id = _id;
info.domain = IdToDomain[_id];
info.royalty = IdRoyaltyMap[_id];
info.owner = TokenOwnerMap[_id];
info.locked = TokenLocked[_id];
info.price = DefaultMintPrice[_id];
info.image = IdImageMap[_id];
info.domainHash = getDomainHash(info.domain);
info.currentLocation = EnsToken.ownerOf(_id);
info.expiry = EnsToken.nameExpires(_id);
return info;
}
function tldBalanceOf(address _addr) public view returns(uint256){
return TLDBalances[_addr];
}
function totalSupply() public view returns(uint256){
return currentId;
}
modifier tokenOwner(uint256 _id) {
require(TokenOwnerMap[_id] == msg.sender, "is not owner");
_;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^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.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/ERC721.sol)
pragma solidity ^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}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
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);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
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(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
pragma solidity >=0.8.4;
interface ENS {
// Logged when the owner of a node assigns a new owner to a subnode.
event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);
// Logged when the owner of a node transfers ownership to a new account.
event Transfer(bytes32 indexed node, address owner);
// Logged when the resolver for a node changes.
event NewResolver(bytes32 indexed node, address resolver);
// Logged when the TTL of a node changes
event NewTTL(bytes32 indexed node, uint64 ttl);
// Logged when an operator is added or removed.
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function setRecord(bytes32 node, address owner, address resolver, uint64 ttl) external virtual;
function setSubnodeRecord(bytes32 node, bytes32 label, address owner, address resolver, uint64 ttl) external virtual;
function setSubnodeOwner(bytes32 node, bytes32 label, address owner) external virtual returns(bytes32);
function setResolver(bytes32 node, address resolver) external virtual;
function setOwner(bytes32 node, address owner) external virtual;
function setTTL(bytes32 node, uint64 ttl) external virtual;
function setApprovalForAll(address operator, bool approved) external virtual;
function owner(bytes32 node) external virtual view returns (address);
function resolver(bytes32 node) external virtual view returns (address);
function ttl(bytes32 node) external virtual view returns (uint64);
function recordExists(bytes32 node) external virtual view returns (bool);
function isApprovedForAll(address owner, address operator) external virtual view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
import "./interfaces/IManager.sol";
import "./interfaces/IRegister.sol";
pragma solidity ^0.8.13;
contract RegistrationRulesV1 is IRegister {
IManager public DomainManager;
constructor(IManager _manager){
DomainManager = _manager;
}
function canRegister(uint256 _tokenId, string calldata _label, address _addr, uint256 _priceInWei, bytes32[] calldata _proofs) external view returns(bool){
uint256 price = DomainManager.DefaultMintPrice(_tokenId);
require(price == _priceInWei, "incorrect ether");
require(price != 0, "not for primary sale");
return true;
}
function mintPrice(uint256 _tokenId, string calldata _label, address _addr, bytes32[] calldata _proofs) external view returns(uint256){
uint256 price = DomainManager.DefaultMintPrice(_tokenId);
address owner = DomainManager.TokenOwnerMap(_tokenId);
return owner == _addr ? 0 : price;
}
}
//SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
pragma solidity ^0.8.13;
interface IERC2981 is IERC165 {
/// ERC165 bytes to add to interface array - set in parent contract
/// implementing this standard
///
/// bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a
/// bytes4 private constant _INTERFACE_ID_ERC2981 = 0x2a55205a;
/// _registerInterface(_INTERFACE_ID_ERC2981);
/// @notice Called with the sale price to determine how much royalty
// is owed and to whom.
/// @param _tokenId - the NFT asset queried for royalty information
/// @param _salePrice - the sale price of the NFT asset specified by _tokenId
/// @return receiver - address of who should be sent the royalty payment
/// @return royaltyAmount - the royalty payment amount for _salePrice
function royaltyInfo(
uint256 _tokenId,
uint256 _salePrice
) external view returns (
address receiver,
uint256 royaltyAmount
);
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IENSToken {
function nameExpires(uint256 id) external view returns(uint256);
function reclaim(uint256 id, address addr) external;
function setResolver(address _resolverAddress) external;
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IManager {
function IdToLabelMap( uint256 _tokenId) external view returns (string memory label);
function IdToOwnerId( uint256 _tokenId) external view returns (uint256 ownerId);
function IdToDomain( uint256 _tokenId) external view returns (string memory domain);
function TokenLocked( uint256 _tokenId) external view returns (bool locked);
function IdImageMap( uint256 _tokenId) external view returns (string memory image);
function IdToHashMap(uint256 _tokenId) external view returns (bytes32 _hash);
function text(bytes32 node, string calldata key) external view returns (string memory _value);
function DefaultMintPrice(uint256 _tokenId) external view returns (uint256 _priceInWei);
function transferDomainOwnership(uint256 _id, address _newOwner) external;
function TokenOwnerMap(uint256 _id) external view returns(address);
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IMetadata {
function tokenURI(uint256 tokenId) external view returns(string memory);
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IRegister {
function canRegister(uint256 _tokenId, string memory _label, address _addr, uint256 _priceInWei, bytes32[] calldata _proofs) external view returns(bool);
function mintPrice(uint256 _tokenId, string calldata _label, address _addr, bytes32[] calldata _proofs) external view returns(uint256);
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IENSAdmin {
function setAddr(bytes32 node, uint256 coinType, bytes memory a) external;
function setAddr(bytes32 node, address a) external;
function setDNSRecords(bytes32 node, bytes memory data) external;
function setText(bytes32 node, string memory key, string memory value) external;
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface IReverseResolver {
function setName(string memory name) external;
}
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
interface ICCIPResolver {
function text(bytes32 _node, string calldata _key) external view returns(string memory _value);
function addr(bytes32 _node) external view returns(address _addr);
function name(bytes32 node) external view returns (string memory);
}
//SPDX-License-Identifier: MIT
import "@ensdomains/ens-contracts/contracts/registry/ENS.sol";
import "./interfaces/IENSToken.sol";
import "./interfaces/IManager.sol";
import "./interfaces/IMetadata.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
pragma solidity ^0.8.13;
contract MetadataProviderV1 is IMetadata {
using Strings for uint256;
IManager public Manager;
ENS private ens = ENS(0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e);
IENSToken public ensToken = IENSToken(0x57f1887a8BF19b14fC0dF6Fd9B2acc9Af147eA85);
string public DefaultImage = 'ipfs://QmYWSU93qnqDvAwHGEpJbEEghGa7w7RbsYo9mYYroQnr1D'; //QmaTFCsJ9jsPEQq9zgJt9F38TJ5Ys3KwVML3mN1sZLZbxE
constructor(IManager _manager){
Manager = _manager;
}
function tokenURI(uint256 tokenId) public view returns(string memory){
string memory label = Manager.IdToLabelMap(tokenId);
uint256 ownerId = Manager.IdToOwnerId(tokenId);
string memory parentName = Manager.IdToDomain(ownerId);
string memory ensName = string(abi.encodePacked(label, ".", parentName, ".eth"));
string memory locked = (ensToken.ownerOf(ownerId) == address(Manager)) && (Manager.TokenLocked(ownerId)) ? "True" : "False";
string memory image = Manager.IdImageMap(ownerId);
bytes32 hashed = Manager.IdToHashMap(tokenId);
string memory avatar = Manager.text(hashed, "avatar");
address resolver = ens.resolver(hashed);
string memory active = resolver == address(Manager) ? "True" : "False";
uint256 expiry = ensToken.nameExpires(ownerId);
return string(
abi.encodePacked(
'data:application/json;utf8,{"name": "'
, ensName
, '","description": "Transferable '
, parentName
, '.eth sub-domain","image":"'
, bytes(avatar).length == 0 ?
(bytes(image).length == 0 ? DefaultImage : image)
: avatar
, '","attributes":[{"trait_type" : "parent name", "value" : "'
, parentName
, '.eth"},{"trait_type" : "parent locked", "value" : "'
, locked
, '"},{"trait_type" : "active", "value" : "'
, active
, '" },{"trait_type" : "parent expiry", "display_type": "date","value": ', expiry.toString(), '}]}'
)
);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
/**
* @dev Adapted this from the ERC721Enumerable extension
*/
abstract contract ENSEnumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
mapping(address => uint256) public TLDBalances;
/**
* @dev
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256) {
require(index < TLDBalances[owner], "ENSEnumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev
*/
function totalTLDCount() public view virtual returns (uint256) {
return _allTokens.length;
}
/**
* @dev
*/
function tokenByIndex(uint256 index) public view virtual returns (uint256) {
require(index < totalTLDCount(), "ENSEnumerable: global index out of bounds");
return _allTokens[index];
}
/**
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTLDTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = TLDBalances[to];
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
++TLDBalances[to];
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = TLDBalances[from] - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
--TLDBalances[from];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
function getTokenOwnerArray(address _addr, uint256 _start, uint256 _count) view external returns(uint256[] memory){
uint256 balance = TLDBalances[_addr];
uint256 num = (_count + _start) > (balance - _start) ? (balance - _start) : _count;
uint256[] memory arr = new uint256[](num);
for(uint256 i; i < num;){
arr[i] = _ownedTokens[_addr][_start + i];
unchecked { ++i; }
}
return arr;
}
}
// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./interfaces/IENSToken.sol";
import "./interfaces/IManager.sol";
pragma solidity ^0.8.13;
contract EnsTldWrapper is ERC721, Ownable {
address constant ENS_TOKEN_ADDRESS = 0x57f1887a8BF19b14fC0dF6Fd9B2acc9Af147eA85;
IENSToken public EnsToken = IENSToken(ENS_TOKEN_ADDRESS);
IManager public DomainManager;
string public BaseUri = 'https://esf.tools/api/wrapped-ens-metadata/';
uint256 public totalSupply;
constructor(IManager _manager) ERC721("Wrapped ENS", "WENS"){
DomainManager = _manager;
}
function mint(address _addr, uint256 _tokenId) public isDomainManager {
_safeMint(_addr, _tokenId);
unchecked { ++totalSupply; }
}
function burn(uint256 _tokenId) public isDomainManager {
_burn(_tokenId);
unchecked { --totalSupply; } //this is only used for display generally.
}
function exists(uint256 _tokenId) public view returns(bool) {
return _exists(_tokenId);
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal override {
if (from != address(0) && to != address(0)){
//the token could expire and then this token would not be bound to it and could be sold independently.
//this should stop that from happening.
require(EnsToken.ownerOf(tokenId) == address(DomainManager)
&& EnsToken.nameExpires(tokenId) > block.timestamp
, "cannot transfer if expired or not in contract");
DomainManager.transferDomainOwnership(tokenId, to);
}
}
function setBaseUri(string calldata _uri) public onlyOwner {
BaseUri = _uri;
}
function _baseURI() internal view override returns (string memory) {
return BaseUri;
}
modifier isDomainManager() {
require(address(DomainManager) == msg.sender, "is not domain manager");
_;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @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._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}