Contract Source Code:
//SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Base64.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "./ByteSwapping.sol";
import "./Royalty.sol";
import "./SVG.sol";
import "./Traversable.sol";
import "./WAVE.sol";
contract INFRSNCS is ERC721, Ownable, Traversable, Royalty {
uint256 public chainSeed;
uint256 public supplied;
uint256 public startTokenId;
uint256 public endTokenId;
uint256 public mintPrice;
constructor(
address layerZeroEndpoint,
uint256 chainSeed_,
uint256 startTokenId_,
uint256 endTokenId_,
uint256 mintPrice_
) ERC721("INFRSNCS", "INFRSNCS") Traversable(layerZeroEndpoint) {
chainSeed = chainSeed_;
startTokenId = startTokenId_;
endTokenId = endTokenId_;
mintPrice = mintPrice_;
}
function withdraw() public onlyOwner {
uint256 balance = address(this).balance;
payable(msg.sender).transfer(balance);
}
function mint(address to) public payable virtual {
require(msg.value >= mintPrice, "INFRSNCS: msg value invalid");
uint256 tokenId = startTokenId + supplied;
require(tokenId <= endTokenId, "INFRSNCS: mint finished");
_safeMint(to, tokenId);
_registerTraversableSeeds(
tokenId,
chainSeed,
uint256(
keccak256(
abi.encodePacked(blockhash(block.number - 1), tokenId)
)
)
);
supplied++;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory tokenURI)
{
require(_exists(tokenId), "INFRSNCS: nonexistent token");
(uint256 birthChainSeed, uint256 tokenIdSeed) = getTraversableSeeds(
tokenId
);
uint256 sampleRate = WAVE.calculateSampleRate(chainSeed);
uint256 dutyCycle = WAVE.calculateDutyCycle(birthChainSeed);
uint256 hertz = WAVE.calculateHertz(tokenIdSeed);
bytes memory wave = WAVE.generate(sampleRate, hertz, dutyCycle);
bytes memory metadata = abi.encodePacked(
'{"name":"INFRSNCS #',
Strings.toString(tokenId),
'","description": "A traversed generative infrasonic.","image_data":"',
SVG.generate(wave),
'","animation_url":"',
wave,
'","attributes":',
abi.encodePacked(
'[{"trait_type":"SAMPLE RATE","value":"',
Strings.toString(sampleRate),
'"},{"trait_type":"DUTY CYCLE","value":"',
Strings.toString(dutyCycle),
'"},{"trait_type":"HERTZ","value":"',
WAVE.addDecimalPointToHertz(hertz),
'"}]'
),
"}"
);
return
string(
abi.encodePacked(
"data:application/json;base64,",
Base64.encode(metadata)
)
);
}
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override
returns (bool)
{
return
interfaceId == type(IERC2981).interfaceId ||
super.supportsInterface(interfaceId);
}
}
// 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 (last updated v4.5.0) (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 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);
_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 {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Base64.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides a set of functions to operate with Base64 strings.
*
* _Available since v4.5._
*/
library Base64 {
/**
* @dev Base64 Encoding/Decoding Table
*/
string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* @dev Converts a `bytes` to its Bytes64 `string` representation.
*/
function encode(bytes memory data) internal pure returns (string memory) {
/**
* Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
* https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
*/
if (data.length == 0) return "";
// Loads the table into memory
string memory table = _TABLE;
// Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
// and split into 4 numbers of 6 bits.
// The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
// - `data.length + 2` -> Round up
// - `/ 3` -> Number of 3-bytes chunks
// - `4 *` -> 4 characters for each chunk
string memory result = new string(4 * ((data.length + 2) / 3));
assembly {
// Prepare the lookup table (skip the first "length" byte)
let tablePtr := add(table, 1)
// Prepare result pointer, jump over length
let resultPtr := add(result, 32)
// Run over the input, 3 bytes at a time
for {
let dataPtr := data
let endPtr := add(data, mload(data))
} lt(dataPtr, endPtr) {
} {
// Advance 3 bytes
dataPtr := add(dataPtr, 3)
let input := mload(dataPtr)
// To write each character, shift the 3 bytes (18 bits) chunk
// 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
// and apply logical AND with 0x3F which is the number of
// the previous character in the ASCII table prior to the Base64 Table
// The result is then added to the table to get the character to write,
// and finally write it in the result pointer but with a left shift
// of 256 (1 byte) - 8 (1 ASCII char) = 248 bits
mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
}
// When data `bytes` is not exactly 3 bytes long
// it is padded with `=` characters at the end
switch mod(mload(data), 3)
case 1 {
mstore8(sub(resultPtr, 1), 0x3d)
mstore8(sub(resultPtr, 2), 0x3d)
}
case 2 {
mstore8(sub(resultPtr, 1), 0x3d)
}
}
return result;
}
}
// 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
pragma solidity 0.8.4;
library ByteSwapping {
function swapUint32(uint32 input) internal pure returns (uint32) {
uint32 output = input;
output = ((output & 0xFF00FF00) >> 8) | ((output & 0x00FF00FF) << 8);
return (output >> 16) | (output << 16);
}
function swapUint16(uint16 input) internal pure returns (uint16) {
uint16 output = input;
return (output >> 8) | (output << 8);
}
}
//SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "./interfaces/IERC2981.sol";
abstract contract Royalty is Ownable, IERC2981 {
uint256 private constant _BPS_BASE = 10000;
uint256 private _bps;
address private _recipient;
function setRoyalty(address recipient, uint256 bps) public onlyOwner {
require(_bps < _BPS_BASE, "Royalty: bps invalid");
_recipient = recipient;
_bps = bps;
}
// solhint-disable-next-line no-unused-vars
function royaltyInfo(uint256 _tokenId, uint256 salePrice)
public
view
override
returns (address, uint256)
{
if (_recipient != address(0x0) && _bps != 0) {
return (_recipient, (salePrice * _bps) / _BPS_BASE);
} else {
return (address(0x0), 0);
}
}
}
//SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
library SVG {
function generate(bytes memory wave) internal pure returns (bytes memory) {
return
abi.encodePacked(
'<svg width=\\"350\\" height=\\"350\\" viewBox=\\"0 0 350 350\\" xmlns=\\"http://www.w3.org/2000/svg\\"><style>@font-face{font-family: \\"Tinos\\"; font-style: normal; font-weight: 400; src: url(data:font/woff2;base64,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) format(\\"woff2\\");}div{width: 350px; height: 350px; background: black; display: flex; align-items: center;}p{margin-left: -700px; margin-right: -700px; font-family: Tinos; color: white; word-break: break-all; letter-spacing: 10px; transform:scale(0.2); font-size: 10px; animation-duration: 0.01s; animation-name: textflicker; animation-iteration-count: infinite; animation-direction: alternate;}@keyframes textflicker{from{text-shadow: 1px 0 0 #ea36af, -2px 0 0 #75fa69;}to{text-shadow: 2px 0.5px 2px #ea36af, -1px -0.5px 2px #75fa69;}}</style><foreignObject x=\\"0\\" y=\\"0\\" width=\\"350\\" height=\\"350\\"><div xmlns=\\"http://www.w3.org/1999/xhtml\\"><p>',
wave,
"</p></div></foreignObject></svg>"
);
}
}
//SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "solidity-examples/contracts/lzApp/NonblockingLzApp.sol";
import "solidity-examples/contracts/token/onft/IONFT.sol";
abstract contract Traversable is ERC721, Ownable, NonblockingLzApp, IONFT {
mapping(uint256 => uint256) private _birthChainSeeds;
mapping(uint256 => uint256) private _tokenIdSeeds;
constructor(address layerZeroEndpoint)
NonblockingLzApp(layerZeroEndpoint)
{} // solhint-disable-line no-empty-blocks
function sendFrom(
address from,
uint16 dstChainId,
bytes calldata toAddress,
uint256 tokenId,
address payable refundAddress,
address zroPaymentAddress,
bytes calldata adapterParam
) external payable virtual override {
_send(
from,
dstChainId,
toAddress,
tokenId,
refundAddress,
zroPaymentAddress,
adapterParam
);
}
function send(
uint16 dstChainId,
bytes calldata toAddress,
uint256 tokenId,
address payable refundAddress,
address zroPaymentAddress,
bytes calldata adapterParam
) external payable virtual override {
_send(
_msgSender(),
dstChainId,
toAddress,
tokenId,
refundAddress,
zroPaymentAddress,
adapterParam
);
}
function getTraversableSeeds(uint256 tokenId)
public
view
returns (uint256 birthChainSeed, uint256 tokenIdSeed)
{
return (_birthChainSeeds[tokenId], _tokenIdSeeds[tokenId]);
}
function _send(
address from,
uint16 dstChainId,
bytes memory toAddress,
uint256 tokenId,
address payable refundAddress,
address zroPaymentAddress,
bytes calldata adapterParam
) internal virtual {
require(
_isApprovedOrOwner(_msgSender(), tokenId),
"Traversable: transfer caller is not owner nor approved"
);
(uint256 birthChainSeed, uint256 tokenIdSeed) = getTraversableSeeds(
tokenId
);
_unregisterTraversableSeeds(tokenId);
_burn(tokenId);
bytes memory payload = abi.encode(
toAddress,
tokenId,
birthChainSeed,
tokenIdSeed
);
_lzSend(
dstChainId,
payload,
refundAddress,
zroPaymentAddress,
adapterParam
);
uint64 nonce = lzEndpoint.getOutboundNonce(dstChainId, address(this));
emit SendToChain(from, dstChainId, toAddress, tokenId, nonce);
}
function _registerTraversableSeeds(
uint256 tokenId,
uint256 birthChainSeed,
uint256 tokenIdSeed
) internal {
_birthChainSeeds[tokenId] = birthChainSeed;
_tokenIdSeeds[tokenId] = tokenIdSeed;
}
function _unregisterTraversableSeeds(uint256 tokenId) internal {
delete _birthChainSeeds[tokenId];
delete _tokenIdSeeds[tokenId];
}
function _nonblockingLzReceive(
uint16 srcChainId, // solhint-disable-line no-unused-vars
bytes memory srcAddress, // solhint-disable-line no-unused-vars
uint64 nonce, // solhint-disable-line no-unused-vars
bytes memory payload
) internal override {
(
bytes memory toAddress,
uint256 tokenId,
uint256 birthChainSeed,
uint256 tokenIdSeed
) = abi.decode(payload, (bytes, uint256, uint256, uint256));
address localToAddress;
//solhint-disable-next-line no-inline-assembly
assembly {
localToAddress := mload(add(toAddress, 20))
}
if (localToAddress == address(0x0)) localToAddress == address(0xdEaD);
_safeMint(localToAddress, tokenId);
_registerTraversableSeeds(tokenId, birthChainSeed, tokenIdSeed);
emit ReceiveFromChain(srcChainId, localToAddress, tokenId, nonce);
}
}
//SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "@openzeppelin/contracts/utils/Base64.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "./ByteSwapping.sol";
library WAVE {
bytes4 private constant _CHANK_ID = "RIFF";
bytes4 private constant _FORMAT = "WAVE";
bytes4 private constant _SUB_CHANK_1_ID = "fmt ";
uint32 private constant _SUB_CHANK_1_SIZE = 16;
uint16 private constant _AUDIO_FORMAT = 1;
uint16 private constant _NUM_CHANNELS = 1;
uint16 private constant _BITS_PER_SAMPLE = 16;
bytes4 private constant _SUB_CHANK_2_SIZE = "data";
int16 private constant _UPPER_AMPLITUDE = 16383;
int16 private constant _LOWER_AMPLITUDE = -16383;
uint256 private constant _MAX_SAMPLE_RATE = 8000;
uint256 private constant _MIN_SAMPLE_RATE = 3000;
uint256 private constant _MAX_HERTZ = 160;
uint256 private constant _MIN_HERTZ = 10;
uint256 private constant _HERTZ_BASE = 10;
uint256 private constant _MAX_DUTY_CYCLE = 99;
uint256 private constant _MIN_DUTY_CYCLE = 1;
uint256 private constant _DUTY_CYCLE_BASE = 100;
function calculateSampleRate(uint256 seed) internal pure returns (uint256) {
return _ramdom(seed, _MAX_SAMPLE_RATE, _MIN_SAMPLE_RATE);
}
function calculateDutyCycle(uint256 seed) internal pure returns (uint256) {
return _ramdom(seed, _MAX_DUTY_CYCLE, _MIN_DUTY_CYCLE);
}
function calculateHertz(uint256 seed) internal pure returns (uint256) {
return _ramdom(seed, _MAX_HERTZ, _MIN_HERTZ);
}
function addDecimalPointToHertz(uint256 hertz)
internal
pure
returns (bytes memory)
{
return
abi.encodePacked(
Strings.toString(hertz / _HERTZ_BASE),
".",
Strings.toString(hertz % _HERTZ_BASE)
);
}
function generate(
uint256 sampleRate,
uint256 hertz,
uint256 dutyCycle
) internal pure returns (bytes memory) {
bytes memory wave;
uint256 waveWidth = (sampleRate / hertz) * _HERTZ_BASE;
uint256 amplitudesLength = 1;
while (waveWidth >= 2**amplitudesLength) {
amplitudesLength++;
}
bytes[] memory upperAmplitudes = new bytes[](amplitudesLength);
bytes[] memory lowerAmplitudes = new bytes[](amplitudesLength);
upperAmplitudes[0] = abi.encodePacked(
ByteSwapping.swapUint16(uint16(_UPPER_AMPLITUDE))
);
lowerAmplitudes[0] = abi.encodePacked(
ByteSwapping.swapUint16(uint16(_LOWER_AMPLITUDE))
);
for (uint256 i = 1; i < amplitudesLength; i++) {
uint256 lastIndex = i - 1;
upperAmplitudes[i] = abi.encodePacked(
upperAmplitudes[lastIndex],
upperAmplitudes[lastIndex]
);
lowerAmplitudes[i] = abi.encodePacked(
lowerAmplitudes[lastIndex],
lowerAmplitudes[lastIndex]
);
}
uint256 upperWaveWidth = (waveWidth * dutyCycle) / _DUTY_CYCLE_BASE;
uint256 lowerWaveWidth = (waveWidth * (_DUTY_CYCLE_BASE - dutyCycle)) /
_DUTY_CYCLE_BASE;
uint256 adjustWaveWidth = sampleRate %
(upperWaveWidth + lowerWaveWidth);
bytes memory upperWave = _concatAmplitudes(
upperAmplitudes,
upperWaveWidth
);
bytes memory lowerWave = _concatAmplitudes(
lowerAmplitudes,
lowerWaveWidth
);
bytes memory adjustWave = _concatAmplitudes(
upperAmplitudes,
adjustWaveWidth
);
while (sampleRate * 2 >= wave.length + waveWidth * 2) {
wave = abi.encodePacked(wave, upperWave, lowerWave);
}
wave = abi.encodePacked(wave, adjustWave);
return _encode(uint32(sampleRate), wave);
}
function _ramdom(
uint256 seed,
uint256 max,
uint256 min
) private pure returns (uint256) {
return (seed % (max - min)) + min;
}
function _concatAmplitudes(bytes[] memory amplitudes, uint256 waveWidth)
private
pure
returns (bytes memory)
{
bytes memory concated;
uint256 lastAmplitudesIndex = amplitudes.length - 1;
while (concated.length < waveWidth * 2) {
uint256 gap = waveWidth * 2 - concated.length;
for (uint256 i = lastAmplitudesIndex; i >= 0; i--) {
if (gap >= amplitudes[i].length) {
concated = abi.encodePacked(concated, amplitudes[i]);
lastAmplitudesIndex = i;
break;
}
}
}
return concated;
}
function _encode(uint32 sampleRate, bytes memory data)
private
pure
returns (bytes memory)
{
bytes memory raw = abi.encodePacked(
_riffChunk(sampleRate),
_fmtSubChunk(sampleRate),
_dataSubChunk(sampleRate, data)
);
return abi.encodePacked("data:audio/wav;base64,", Base64.encode(raw));
}
function _riffChunk(uint32 sampleRate) private pure returns (bytes memory) {
return
abi.encodePacked(
_CHANK_ID,
ByteSwapping.swapUint32(_chunkSize(sampleRate)),
_FORMAT
);
}
function _chunkSize(uint32 sampleRate) private pure returns (uint32) {
return 4 + (8 + _SUB_CHANK_1_SIZE) + (8 + _subchunk2Size(sampleRate));
}
function _fmtSubChunk(uint32 sampleRate)
private
pure
returns (bytes memory)
{
return
abi.encodePacked(
_SUB_CHANK_1_ID,
ByteSwapping.swapUint32(_SUB_CHANK_1_SIZE),
ByteSwapping.swapUint16(_AUDIO_FORMAT),
ByteSwapping.swapUint16(_NUM_CHANNELS),
ByteSwapping.swapUint32(sampleRate),
ByteSwapping.swapUint32(_byteRate(sampleRate)),
ByteSwapping.swapUint16(_blockAlign()),
ByteSwapping.swapUint16(_BITS_PER_SAMPLE)
);
}
function _byteRate(uint32 sampleRate) private pure returns (uint32) {
return (sampleRate * _NUM_CHANNELS * _BITS_PER_SAMPLE) / 8;
}
function _blockAlign() private pure returns (uint16) {
return (_NUM_CHANNELS * _BITS_PER_SAMPLE) / 8;
}
function _dataSubChunk(uint32 sampleRate, bytes memory data)
private
pure
returns (bytes memory)
{
return
abi.encodePacked(
_SUB_CHANK_2_SIZE,
ByteSwapping.swapUint32(_subchunk2Size(sampleRate)),
data
);
}
function _subchunk2Size(uint32 sampleRate) private pure returns (uint32) {
return (sampleRate * _NUM_CHANNELS * _BITS_PER_SAMPLE) / 8;
}
}
// 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 (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 (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);
}
}
}
}
// 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
pragma solidity 0.8.4;
interface IERC2981 {
function royaltyInfo(uint256 tokenId, uint256 value)
external
view
returns (address, uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./LzApp.sol";
/*
* the default LayerZero messaging behaviour is blocking, i.e. any failed message will block the channel
* this abstract class try-catch all fail messages and store locally for future retry. hence, non-blocking
* NOTE: if the srcAddress is not configured properly, it will still block the message pathway from (srcChainId, srcAddress)
*/
abstract contract NonblockingLzApp is LzApp {
constructor(address _endpoint) LzApp(_endpoint) {}
mapping(uint16 => mapping(bytes => mapping(uint => bytes32))) public failedMessages;
event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload);
// overriding the virtual function in LzReceiver
function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
// try-catch all errors/exceptions
try this.nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload) {
// do nothing
} catch {
// error / exception
failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload);
emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload);
}
}
function nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) public virtual {
// only internal transaction
require(_msgSender() == address(this), "LzReceiver: caller must be Bridge.");
_nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
}
//@notice override this function
function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;
function retryMessage(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes calldata _payload) external payable virtual {
// assert there is message to retry
bytes32 payloadHash = failedMessages[_srcChainId][_srcAddress][_nonce];
require(payloadHash != bytes32(0), "LzReceiver: no stored message");
require(keccak256(_payload) == payloadHash, "LzReceiver: invalid payload");
// clear the stored message
failedMessages[_srcChainId][_srcAddress][_nonce] = bytes32(0);
// execute the message. revert if it fails again
this.nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
/**
* @dev Interface of the ONFT standard
*/
interface IONFT is IERC721 {
/**
* @dev send token `_tokenId` to (`_dstChainId`, `_toAddress`)
* `_toAddress` can be any size depending on the `dstChainId`.
* `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
* `_adapterParam` is a flexible bytes array to indicate messaging adapter services
*/
function send(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable;
/**
* @dev send token `_tokenId` to (`_dstChainId`, `_toAddress`) from `_from`
* `_toAddress` can be any size depending on the `dstChainId`.
* `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
* `_adapterParam` is a flexible bytes array to indicate messaging adapter services
*/
function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable;
/**
* @dev Emitted when `_tokenId` are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
* `_nonce` is the outbound nonce from
*/
event SendToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint _tokenId, uint64 _nonce);
/**
* @dev Emitted when `_tokenId` are sent from `_srcChainId` to the `_toAddress` at this chain. `_nonce` is the inbound nonce.
*/
event ReceiveFromChain(uint16 _srcChainId, address _toAddress, uint _tokenId, uint64 _nonce);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/ILayerZeroReceiver.sol";
import "../interfaces/ILayerZeroUserApplicationConfig.sol";
import "../interfaces/ILayerZeroEndpoint.sol";
/*
* a generic LzReceiver implementation
*/
abstract contract LzApp is Ownable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
ILayerZeroEndpoint internal immutable lzEndpoint;
mapping(uint16 => bytes) internal trustedRemoteLookup;
event SetTrustedRemote(uint16 _srcChainId, bytes _srcAddress);
constructor(address _endpoint) {
lzEndpoint = ILayerZeroEndpoint(_endpoint);
}
function lzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) external override {
// lzReceive must be called by the endpoint for security
require(_msgSender() == address(lzEndpoint));
// if will still block the message pathway from (srcChainId, srcAddress). should not receive message from untrusted remote.
require(_srcAddress.length == trustedRemoteLookup[_srcChainId].length && keccak256(_srcAddress) == keccak256(trustedRemoteLookup[_srcChainId]), "LzReceiver: invalid source sending contract");
_blockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
}
// abstract function - the default behaviour of LayerZero is blocking. See: NonblockingLzApp if you dont need to enforce ordered messaging
function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;
function _lzSend(uint16 _dstChainId, bytes memory _payload, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParam) internal {
require(trustedRemoteLookup[_dstChainId].length != 0, "LzSend: destination chain is not a trusted source.");
lzEndpoint.send{value: msg.value}(_dstChainId, trustedRemoteLookup[_dstChainId], _payload, _refundAddress, _zroPaymentAddress, _adapterParam);
}
//---------------------------UserApplication config----------------------------------------
function getConfig(uint16, uint16 _chainId, address, uint _configType) external view returns (bytes memory) {
return lzEndpoint.getConfig(lzEndpoint.getSendVersion(address(this)), _chainId, address(this), _configType);
}
// generic config for LayerZero user Application
function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external override onlyOwner {
lzEndpoint.setConfig(_version, _chainId, _configType, _config);
}
function setSendVersion(uint16 _version) external override onlyOwner {
lzEndpoint.setSendVersion(_version);
}
function setReceiveVersion(uint16 _version) external override onlyOwner {
lzEndpoint.setReceiveVersion(_version);
}
function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyOwner {
lzEndpoint.forceResumeReceive(_srcChainId, _srcAddress);
}
// allow owner to set it multiple times.
function setTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external onlyOwner {
trustedRemoteLookup[_srcChainId] = _srcAddress;
emit SetTrustedRemote(_srcChainId, _srcAddress);
}
function isTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool) {
bytes memory trustedSource = trustedRemoteLookup[_srcChainId];
return keccak256(trustedSource) == keccak256(_srcAddress);
}
//--------------------------- VIEW FUNCTION ----------------------------------------
// interacting with the LayerZero Endpoint and remote contracts
function getTrustedRemote(uint16 _chainId) external view returns (bytes memory) {
return trustedRemoteLookup[_chainId];
}
function getLzEndpoint() external view returns (address) {
return address(lzEndpoint);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface ILayerZeroReceiver {
// @notice LayerZero endpoint will invoke this function to deliver the message on the destination
// @param _srcChainId - the source endpoint identifier
// @param _srcAddress - the source sending contract address from the source chain
// @param _nonce - the ordered message nonce
// @param _payload - the signed payload is the UA bytes has encoded to be sent
function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface ILayerZeroUserApplicationConfig {
// @notice set the configuration of the LayerZero messaging library of the specified version
// @param _version - messaging library version
// @param _chainId - the chainId for the pending config change
// @param _configType - type of configuration. every messaging library has its own convention.
// @param _config - configuration in the bytes. can encode arbitrary content.
function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;
// @notice set the send() LayerZero messaging library version to _version
// @param _version - new messaging library version
function setSendVersion(uint16 _version) external;
// @notice set the lzReceive() LayerZero messaging library version to _version
// @param _version - new messaging library version
function setReceiveVersion(uint16 _version) external;
// @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
// @param _srcChainId - the chainId of the source chain
// @param _srcAddress - the contract address of the source contract at the source chain
function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import "./ILayerZeroUserApplicationConfig.sol";
interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
// @notice send a LayerZero message to the specified address at a LayerZero endpoint.
// @param _dstChainId - the destination chain identifier
// @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
// @param _payload - a custom bytes payload to send to the destination contract
// @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
// @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
// @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;
// @notice used by the messaging library to publish verified payload
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source contract (as bytes) at the source chain
// @param _dstAddress - the address on destination chain
// @param _nonce - the unbound message ordering nonce
// @param _gasLimit - the gas limit for external contract execution
// @param _payload - verified payload to send to the destination contract
function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;
// @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);
// @notice get the outboundNonce from this source chain which, consequently, is always an EVM
// @param _srcAddress - the source chain contract address
function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);
// @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
// @param _dstChainId - the destination chain identifier
// @param _userApplication - the user app address on this EVM chain
// @param _payload - the custom message to send over LayerZero
// @param _payInZRO - if false, user app pays the protocol fee in native token
// @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);
// @notice get this Endpoint's immutable source identifier
function getChainId() external view returns (uint16);
// @notice the interface to retry failed message on this Endpoint destination
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
// @param _payload - the payload to be retried
function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;
// @notice query if any STORED payload (message blocking) at the endpoint.
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);
// @notice query if the _libraryAddress is valid for sending msgs.
// @param _userApplication - the user app address on this EVM chain
function getSendLibraryAddress(address _userApplication) external view returns (address);
// @notice query if the _libraryAddress is valid for receiving msgs.
// @param _userApplication - the user app address on this EVM chain
function getReceiveLibraryAddress(address _userApplication) external view returns (address);
// @notice query if the non-reentrancy guard for send() is on
// @return true if the guard is on. false otherwise
function isSendingPayload() external view returns (bool);
// @notice query if the non-reentrancy guard for receive() is on
// @return true if the guard is on. false otherwise
function isReceivingPayload() external view returns (bool);
// @notice get the configuration of the LayerZero messaging library of the specified version
// @param _version - messaging library version
// @param _chainId - the chainId for the pending config change
// @param _userApplication - the contract address of the user application
// @param _configType - type of configuration. every messaging library has its own convention.
function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);
// @notice get the send() LayerZero messaging library version
// @param _userApplication - the contract address of the user application
function getSendVersion(address _userApplication) external view returns (uint16);
// @notice get the lzReceive() LayerZero messaging library version
// @param _userApplication - the contract address of the user application
function getReceiveVersion(address _userApplication) external view returns (uint16);
}