Contract Source Code:
// SPDX-License-Identifier: MIT
/*
* JuiceBox.sol
*
* Created: October 27, 2021
*
* Price: FREE
* Rinkeby: 0x09494437a042494eAdA9801A85eE494cFB27D75b
* Mainnet:
*
* Description: An ERC-721 token that will be claimable by anyone who owns 'the Plug'
*
* - There will be 4 variations, each with a different rarity (based on how likely it is
* to receive, i.e. v1:60%, v2:20%, v3:15%, v4:5%)
* - Owners with multiple Plugs will benefit through a distribution scheme that shifts
* the probability of minting each variation towards 25%
*/
pragma solidity >=0.5.16 <0.9.0;
import "./Kasbeer721.sol";
//@title Juice Box
//@author Jack Kasbeer (gh:@jcksber, tw:@satoshigoat, ig:overprivilegd)
contract JuiceBox is Kasbeer721 {
// -------------
// EVENTS & VARS
// -------------
event JuiceBoxMinted(uint256 indexed a);
event JuiceBoxBurned(uint256 indexed a);
//@dev This is how we'll keep track of who has already minted a JuiceBox
mapping (address => bool) internal _boxHolders;
//@dev Keep track of which token ID is associated with which hash
mapping (uint256 => string) internal _tokenToHash;
//@dev Initial production hashes
string [NUM_ASSETS] boxHashes = ["QmbZH1NZLvUTqeaHXH37fVnb7QHcCFDsn4QKvicM1bmn5j",
"QmVXiZFCwxBiJQJCpiSCKz8TkaWmnEBpT6stmxYqRK4FeY",
"Qmds7Ag48sfeodwmtWmTokFGZoHiGZXYN2YbojtjTR7GhR",
"QmeUPdEvAU5sSEv1Nwixbu1oxkSFCY194m8Drm9u3rtVWg"];
//cherry, berry, kiwi, lemon
//@dev Associated weights of probability for hashes
uint16 [NUM_ASSETS] boxWeights = [60, 23, 15, 2];//cherry, berry, kiwi, lemon
//@dev Secret word to prevent etherscan claims
string private _secret;
constructor(string memory secret) Kasbeer721("Juice Box", "") {
_whitelistActive = true;
_secret = secret;
_contractUri = "ipfs://QmdafigFsnSjondbSFKWhV2zbCf8qF5xEkgNoCYcnanhD6";
payoutAddress = 0x6b8C6E15818C74895c31A1C91390b3d42B336799;//logik
}
// -----------
// RESTRICTORS
// -----------
modifier boxAvailable()
{
require(getCurrentId() < MAX_NUM_TOKENS, "JuiceBox: no JuiceBox's left to mint");
_;
}
modifier tokenExists(uint256 tokenId)
{
require(_exists(tokenId), "JuiceBox: nonexistent token");
_;
}
// ---------------
// JUICE BOX MAGIC
// ---------------
//@dev Override 'tokenURI' to account for asset/hash cycling
function tokenURI(uint256 tokenId)
public view virtual override tokenExists(tokenId)
returns (string memory)
{
return string(abi.encodePacked(_baseURI(), _tokenToHash[tokenId]));
}
//@dev Get the secret word
function _getSecret() private view returns (string memory)
{
return _secret;
}
//// ----------------------
//// IPFS HASH MANIPULATION
//// ----------------------
//@dev Get the hash stored at `idx`
function getHashByIndex(uint8 idx) public view hashIndexInRange(idx)
returns (string memory)
{
return boxHashes[idx];
}
//@dev Allows us to update the IPFS hash values (one at a time)
// 0:cherry, 1:berry, 2:kiwi, 3:lemon
function updateHashForIndex(uint8 idx, string memory str)
public isSquad hashIndexInRange(idx)
{
boxHashes[idx] = str;
}
// ------------------
// MINTING & CLAIMING
// ------------------
//@dev Allows owners to mint for free
function mint(address to) public virtual override isSquad boxAvailable
returns (uint256 tid)
{
tid = _mintInternal(to);
_assignHash(tid, 1);
}
//@dev Mint a specific juice box (owners only)
function mintWithHash(address to, string memory hash) public isSquad returns (uint256 tid)
{
tid = _mintInternal(to);
_tokenToHash[tid] = hash;
}
//@dev Claim a JuiceBox if you're a Plug holder
function claim(address to, uint8 numPlugs, string memory secret) public
boxAvailable whitelistEnabled onlyWhitelist(to) saleActive
returns (uint256 tid, string memory hash)
{
require(!_boxHolders[to], "JuiceBox: cannot claim more than 1");
require(!_isContract(to), "JuiceBox: silly rabbit :P");
require(_stringsEqual(secret, _getSecret()), "JuiceBox: silly rabbit :P");
tid = _mintInternal(to);
hash = _assignHash(tid, numPlugs);
}
//@dev Mints a single Juice Box & updates `_boxHolders` accordingly
function _mintInternal(address to) internal virtual returns (uint256 newId)
{
_incrementTokenId();
newId = getCurrentId();
_safeMint(to, newId);
_markAsClaimed(to);
emit JuiceBoxMinted(newId);
}
//@dev Based on the number of Plugs owned by the sender, randomly select
// a JuiceBox hash that will be associated with their token id
function _assignHash(uint256 tid, uint8 numPlugs) private tokenExists(tid)
returns (string memory hash)
{
uint8[] memory weights = new uint8[](NUM_ASSETS);
//calculate new weights based on `numPlugs`
if (numPlugs > 50) numPlugs = 50;
weights[0] = uint8(boxWeights[0] - 35*((numPlugs-1)/50));//cherry: 60% -> 25%
weights[1] = uint8(boxWeights[1] + 2*((numPlugs-1)/50));//berry: 23% -> 25%
weights[2] = uint8(boxWeights[2] + 10*((numPlugs-1)/50));//kiwi: 15% -> 25%
weights[3] = uint8(boxWeights[3] + 23*((numPlugs-1)/50));//lemon: 2% -> 25%
uint16 rnd = random() % 100;//should be b/n 0 & 100
//randomly select a juice box hash
uint8 i;
for (i = 0; i < NUM_ASSETS; i++) {
if (rnd < weights[i]) {
hash = boxHashes[i];
break;
}
rnd -= weights[i];
}
//assign the selected hash to this token id
_tokenToHash[tid] = hash;
}
//@dev Update `_boxHolders` so that `a` cannot claim another juice box
function _markAsClaimed(address a) private
{
_boxHolders[a] = true;
}
function getHashForTid(uint256 tid) public view tokenExists(tid)
returns (string memory)
{
return _tokenToHash[tid];
}
//@dev Pseudo-random number generator
function random() public view returns (uint16 rnd)
{
return uint16(uint(keccak256(abi.encodePacked(block.difficulty, block.timestamp, boxWeights))));
}
}
// SPDX-License-Identifier: MIT
/*
* Kasbeer721.sol
*
* Created: October 27, 2021
*
* Tuned-up ERC721 that covers a multitude of features that are generally useful
* so that it can be easily extended for quick customization .
*/
pragma solidity >=0.5.16 <0.9.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "./access/Whitelistable.sol";
import "./access/Pausable.sol";
import "./utils/LibPart.sol";
//@title Kasbeer721 - Beefed up ERC721
//@author Jack Kasbeer (git:@jcksber, tw:@satoshigoat, ig:overprivilegd)
contract Kasbeer721 is ERC721, Whitelistable, Pausable {
using SafeMath for uint256;
using Counters for Counters.Counter;
// -------------
// EVENTS & VARS
// -------------
event Kasbeer721Minted(uint256 indexed tokenId);
event Kasbeer721Burned(uint256 indexed tokenId);
//@dev Token incrementing
Counters.Counter internal _tokenIds;
//@dev Important numbers
uint constant NUM_ASSETS = 4;//4 juice box variations
uint constant MAX_NUM_TOKENS = 413;//nomad+chi+st.l dream chasers
//@dev Properties
string internal _contractUri;
address public payoutAddress;
//@dev These are needed for contract compatability
uint256 constant public royaltyFeeBps = 1000; // 10%
bytes4 internal constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
bytes4 internal constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
bytes4 internal constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
bytes4 internal constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
bytes4 internal constant _INTERFACE_ID_EIP2981 = 0x2a55205a;
bytes4 internal constant _INTERFACE_ID_ROYALTIES = 0xcad96cca;
constructor(string memory temp_name, string memory temp_symbol)
ERC721(temp_name, temp_symbol) {}
// ---------
// MODIFIERS
// ---------
modifier hashIndexInRange(uint8 idx)
{
require(0 <= idx && idx < NUM_ASSETS, "Kasbeer721: index OOB");
_;
}
modifier onlyValidTokenId(uint256 tokenId)
{
require(1 <= tokenId && tokenId <= MAX_NUM_TOKENS, "Kasbeer721: tokenId OOB");
_;
}
// ----------
// MAIN LOGIC
// ----------
//@dev All of the asset's will be pinned to IPFS
function _baseURI()
internal view virtual override returns (string memory)
{
return "ipfs://";
}
//@dev This is here as a reminder to override for custom transfer functionality
function _beforeTokenTransfer(address from, address to, uint256 tokenId)
internal virtual override
{
super._beforeTokenTransfer(from, to, tokenId);
}
//@dev Allows owners to mint for free
function mint(address to) public virtual isSquad returns (uint256)
{
_tokenIds.increment();
uint256 newId = _tokenIds.current();
_safeMint(to, newId);
emit Kasbeer721Minted(newId);
return newId;
}
//@dev Custom burn function - nothing special
function burn(uint256 tokenId) public virtual
{
require(
isInSquad(_msgSender()) ||
_msgSender() == ownerOf(tokenId),
"Kasbeer721: not owner or in squad."
);
_burn(tokenId);
emit Kasbeer721Burned(tokenId);
}
//// --------
//// CONTRACT
//// --------
//@dev Controls the contract-level metadata to include things like royalties
function contractURI() public view returns(string memory)
{
return _contractUri;
}
//@dev Ability to change the contract URI
function updateContractUri(string memory updatedContractUri) public isSquad
{
_contractUri = updatedContractUri;
}
//@dev Allows us to withdraw funds collected
function withdraw(address payable wallet, uint256 amount) public isSquad
{
require(amount <= address(this).balance,
"Kasbeer721: Insufficient funds to withdraw");
wallet.transfer(amount);
}
//@dev Destroy contract and reclaim leftover funds
function kill() public onlyOwner
{
selfdestruct(payable(_msgSender()));
}
// -------
// HELPERS
// -------
//@dev Returns the current token id (number minted so far)
function getCurrentId() public view returns (uint256)
{
return _tokenIds.current();
}
//@dev Increments `_tokenIds` by 1
function _incrementTokenId() internal
{
_tokenIds.increment();
}
//@dev Determine if two strings are equal using the length + hash method
function _stringsEqual(string memory a, string memory b)
internal pure returns (bool)
{
bytes memory A = bytes(a);
bytes memory B = bytes(b);
if (A.length != B.length) {
return false;
} else {
return keccak256(A) == keccak256(B);
}
}
//@dev Determine if an address is a smart contract
function _isContract(address a) internal view returns (bool)
{
uint32 size;
assembly {
size := extcodesize(a)
}
return size > 0;
}
// -----------------
// SECONDARY MARKETS
// -----------------
//@dev Rarible Royalties V2
function getRaribleV2Royalties(uint256 id)
onlyValidTokenId(id) external view returns (LibPart.Part[] memory)
{
LibPart.Part[] memory royalties = new LibPart.Part[](1);
royalties[0] = LibPart.Part({
account: payable(payoutAddress),
value: uint96(royaltyFeeBps)
});
return royalties;
}
//@dev EIP-2981
function royaltyInfo(uint256 tokenId, uint256 salePrice) external view onlyValidTokenId(tokenId) returns (address receiver, uint256 amount) {
uint256 ourCut = SafeMath.div(SafeMath.mul(salePrice, royaltyFeeBps), 10000);
return (payoutAddress, ourCut);
}
// -----------------
// INTERFACE SUPPORT
// -----------------
//@dev Confirm that this contract is compatible w/ these interfaces
function supportsInterface(bytes4 interfaceId)
public view virtual override returns (bool)
{
return interfaceId == _INTERFACE_ID_ERC165
|| interfaceId == _INTERFACE_ID_ROYALTIES
|| interfaceId == _INTERFACE_ID_ERC721
|| interfaceId == _INTERFACE_ID_ERC721_METADATA
|| interfaceId == _INTERFACE_ID_ERC721_ENUMERABLE
|| interfaceId == _INTERFACE_ID_EIP2981
|| super.supportsInterface(interfaceId);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_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 || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev 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 {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)
pragma solidity ^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;`
*/
library Counters {
struct Counter {
// 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/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 substraction 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
/*
* Whitelistable.sol
*
* Created: December 21, 2021
*
* Provides functionality for a "whitelist"/"guestlist" for inheriting contracts.
*/
pragma solidity >=0.5.16 <0.9.0;
import "./SquadOwnable.sol";
//@title Whitelistable
//@author Jack Kasbeer (gh:@jcksber, tw:@satoshigoat, ig:overprivilegd)
contract Whitelistable is SquadOwnable {
// -------------
// EVENTS & VARS
// -------------
event WhitelistActivated(address indexed a);
event WhitelistDeactivated(address indexed a);
//@dev Whitelist mapping for client addresses
mapping (address => bool) internal _whitelist;
//@dev Whitelist flag for active/inactive states
bool internal _whitelistActive;
constructor() {
_whitelistActive = false;
//add myself and then logik (client)
_whitelist[0xB9699469c0b4dD7B1Dda11dA7678Fa4eFD51211b] = true;
_whitelist[0x6b8C6E15818C74895c31A1C91390b3d42B336799] = true;
}
// ---------
// MODIFIERS
// ---------
//@dev Determine if someone is in the whitelsit
modifier onlyWhitelist(address a)
{
require(isWhitelisted(a), "Whitelistable: must be on whitelist");
_;
}
//@dev Prevent non-whitelist minting functions from being used
modifier whitelistDisabled()
{
require(_whitelistActive == false, "Whitelistable: whitelist still active");
_;
}
//@dev Require that the whitelist is currently enabled
modifier whitelistEnabled()
{
require(_whitelistActive == true, "Whitelistable: whitelist not active");
_;
}
// ----------
// MAIN LOGIC
// ----------
//@dev Toggle the state of the whitelist (on/off)
function toggleWhitelist() public isSquad
{
_whitelistActive = !_whitelistActive;
if (_whitelistActive) {
emit WhitelistActivated(_msgSender());
} else {
emit WhitelistDeactivated(_msgSender());
}
}
//@dev Determine if `a` is in the `_whitelist
function isWhitelisted(address a) public view returns (bool)
{
return _whitelist[a];
}
//// ----------
//// ADD/REMOVE
//// ----------
//@dev Add a single address to whitelist
function addToWhitelist(address a) public isSquad
{
require(!isWhitelisted(a), "Whitelistable: already whitelisted");
_whitelist[a] = true;
}
//@dev Remove a single address from the whitelist
function removeFromWhitelist(address a) public isSquad
{
require(isWhitelisted(a), "Whitelistable: not in whitelist");
_whitelist[a] = false;
}
//@dev Add a list of addresses to the whitelist
function bulkAddToWhitelist(address[] memory addresses) public isSquad
{
uint addrLen = addresses.length;
require(addrLen > 1, "Whitelistable: use `addToWhitelist` instead");
require(addrLen < 65536, "Whitelistable: cannot add more than 65535 at once");
uint16 i;
for (i = 0; i < addrLen; i++) {
if (!isWhitelisted(addresses[i])) {
_whitelist[addresses[i]] = true;
}
}
}
}
// SPDX-License-Identifier: MIT
/*
* Pausable.sol
*
* Created: December 21, 2021
*
* Provides functionality for pausing and unpausing the sale (or other functionality)
*/
pragma solidity >=0.5.16 <0.9.0;
import "./SquadOwnable.sol";
//@title Pausable
//@author Jack Kasbeer (gh:@jcksber, tw:@satoshigoat, ig:overprivilegd)
contract Pausable is SquadOwnable {
// -------------
// EVENTS & VARS
// -------------
event Paused(address indexed a);
event Unpaused(address indexed a);
bool private _paused;
constructor() {
_paused = false;
}
// ---------
// MODIFIERS
// ---------
//@dev This will require the sale to be unpaused
modifier saleActive()
{
require(!_paused, "Pausable: sale paused.");
_;
}
// ----------
// MAIN LOGIC
// ----------
//@dev Pause or unpause minting
function toggleSaleActive() public isSquad
{
_paused = !_paused;
if (_paused) {
emit Paused(_msgSender());
} else {
emit Unpaused(_msgSender());
}
}
//@dev Determine if the sale is currently paused
function paused() public view virtual returns (bool)
{
return _paused;
}
}
// SPDX-License-Identifier: MIT
/*
* LibPart.sol
*
* Author: Jack Kasbeer (taken from 'dot')
* Created: October 20, 2021
*/
pragma solidity >=0.5.16 <0.9.0;
//@dev We need this libary for Rarible
library LibPart {
bytes32 public constant TYPE_HASH = keccak256("Part(address account,uint96 value)");
struct Part {
address payable account;
uint96 value;
}
function hash(Part memory part) internal pure returns (bytes32) {
return keccak256(abi.encode(TYPE_HASH, part.account, part.value));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// 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 v4.4.1 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @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);
}
}
}
}
// 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/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
// 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 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
/*
* SquadOwnable.sol
*
* Created: December 21, 2021
*
* An extension of `Ownable.sol` to accomodate for a potential list of owners.
* NOTE: this will need to be the last inherited contract to give all parents
* access to the modifiers it provides
*/
pragma solidity >=0.5.16 <0.9.0;
import "@openzeppelin/contracts/access/Ownable.sol";
//@title SquadOwnable
//@author Jack Kasbeer (gh:@jcksber, tw:@satoshigoat, ig:overprivilegd)
contract SquadOwnable is Ownable {
//@dev Ownership - list of squad members (owners)
mapping (address => bool) internal _squad;
constructor() {
//add myself and then logik (client)
_squad[0xB9699469c0b4dD7B1Dda11dA7678Fa4eFD51211b] = true;
_squad[0x6b8C6E15818C74895c31A1C91390b3d42B336799] = true;
}
//@dev Custom modifier for multiple owners
modifier isSquad()
{
require(isInSquad(_msgSender()), "SquadOwnable: Caller not part of squad.");
_;
}
//@dev Determine if address `a` is an approved owner
function isInSquad(address a) public view returns (bool)
{
return _squad[a];
}
//@dev Add `a` to the squad
function addToSquad(address a) public onlyOwner
{
require(!isInSquad(a), "SquadOwnable: Address already in squad.");
_squad[a] = true;
}
//@dev Remove `a` from the squad
function removeFromSquad(address a) public onlyOwner
{
require(isInSquad(a), "SquadOwnable: Address already not in squad.");
_squad[a] = false;
}
}
// 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);
}
}