文件 1 的 6:Context.sol
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
文件 2 的 6:ERC20.sol
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
文件 3 的 6:IERC20.sol
pragma solidity ^0.8.0;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
文件 4 的 6:IERC20Metadata.sol
pragma solidity ^0.8.0;
import "../IERC20.sol";
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
文件 5 的 6:SafeMath.sol
pragma solidity ^0.8.0;
library SafeMath {
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);
}
}
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
文件 6 的 6:WofToken.sol
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
interface IWorldOfFreight {
function balanceOG(address _user) external view returns(uint256);
function ownerOf(uint256 tokenId) external view returns(address);
function mintedcount() external view returns (uint256);
}
contract WOFToken is ERC20("WoFToken", "WOF") {
using SafeMath for uint256;
uint256 public BASE_RATE = 25000000000000000000;
uint256 public buyPrice = 30000000000000;
bool public _saleOpen = false;
uint256 public rate = 1;
bool public cut = false;
address public cutAddres;
address public contOwner;
address public _garageContract;
uint256 public ENDTIME = 1664582400;
mapping(address => uint256) public rewards;
mapping(address => uint256) public lastUpdate;
IWorldOfFreight public wofContract;
constructor(address _wof) {
wofContract = IWorldOfFreight(_wof);
contOwner = msg.sender;
}
function setPrice(uint256 _price) public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
buyPrice = _price;
}
function setBaseRate(uint256 _price) public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
BASE_RATE = _price;
}
function setCut() public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
cut = !cut;
}
function setCutAddr(address _to) public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
cutAddres = _to;
}
function setGarageContract(address contractAddress) public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
_garageContract = contractAddress;
}
function toggleTokenSale() public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
_saleOpen = !_saleOpen;
}
function setRate(uint256 newRate) public {
require(msg.sender == contOwner, 'Big no-no');
rate = newRate;
}
function rewardOnMint(address _user, uint256 _amount) external {
require(msg.sender == address(wofContract), "Can't call this");
uint256 tokenId = wofContract.mintedcount();
uint256 time = block.timestamp;
if(tokenId < 2501) {
rewards[_user] = rewards[_user].add(500 ether);
}
else {
rewards[_user] = rewards[_user].add(_amount);
}
lastUpdate[_user] = time;
}
function getClaimable(address _owner) public view returns(uint256){
uint256 time = block.timestamp;
if(lastUpdate[_owner] == 0) {
return 0;
}
else if(time < ENDTIME) {
uint256 pending = wofContract.balanceOG(_owner).mul(BASE_RATE.mul((time.sub(lastUpdate[_owner])))).div(86400);
uint256 total = rewards[_owner].add(pending);
return total;
}
else {
return rewards[_owner];
}
}
struct Rewardees {
address owner;
uint256 amount;
}
function initialReward(Rewardees [] memory _array, uint256 time) public {
require(msg.sender == contOwner, 'Big no-no');
for(uint i=0; i < _array.length; i++){
rewards[_array[i].owner] = _array[i].amount;
lastUpdate[_array[i].owner] = time;
}
}
function setBalance(Rewardees [] memory _array) public {
require(msg.sender == contOwner || msg.sender == address(_garageContract), 'Big no-no');
for(uint i=0; i < _array.length; i++){
rewards[_array[i].owner] = _array[i].amount;
}
}
function transferTokens(address _from, address _to) external {
require(msg.sender == address(wofContract));
uint256 time = block.timestamp;
rewards[_from] = getClaimable(_from);
lastUpdate[_from] = time;
rewards[_to] = getClaimable(_to);
lastUpdate[_to] = time;
}
function buyMint(address _to, uint256 _amount) public payable {
require(msg.value >= _amount.mul(buyPrice), 'Send more eth');
require(_saleOpen == true, 'Can not buy at the moment');
uint256 eth = _amount.mul(1 ether);
_mint(_to, eth);
}
function rewardUsers(address _to, uint256 _amount) public {
require(msg.sender == contOwner, 'Sorry, no luck for you');
uint256 time = block.timestamp;
uint256 unclaimed = getClaimable(_to);
rewards[_to] = rewards[_to].add(_amount).add(unclaimed);
lastUpdate[_to] = time;
}
function claimTokens(address _to, uint256 _amount) public {
require(_amount <= getClaimable(_to), 'You do not have this much');
rewards[_to] = getClaimable(_to);
uint256 time = block.timestamp;
rewards[_to] = rewards[_to].sub(_amount);
lastUpdate[_to] = time;
_mint(_to, _amount );
}
function burn(address _from, uint256 _amount) external {
require(msg.sender == address(wofContract) || msg.sender == address(_garageContract));
uint256 valueInEth = _amount/(1 ether);
if(cut) {
uint256 percentage = rate.div(100);
uint256 cuttable = valueInEth.div(percentage);
uint256 burnable = valueInEth.sub(cuttable);
_transfer(_from, cutAddres, cuttable);
_burn(_from, burnable);
}
else {
_burn(_from, valueInEth);
}
}
function withdraw(address payable to, uint256 amount) public {
require(msg.sender == contOwner);
to.transfer(amount);
}
}
{
"compilationTarget": {
"contracts/WofToken.sol": "WOFToken"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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