Contract Name:
MichaelMyersCoin
Contract Source Code:
/**
* Michael Myers Coin
* Telegram: https://t.me/michael_myers_coin_entry_portal
* Taxes: 7/7 (5 team, split between 5 team members evenly, 2 marketing)
* Sell-on-buy technology with pool arbitrage built-in
* Choose-your-own-adventure game fully built, to be made public after launch.
* SPDX-License-Identifier: UNLICENSED
* Pls don't steal my code, but I know it'll happen anyway
*
* WHAT IS HAPPENING?
* $MM finally arrived and will haunt you this year with events throughout the month.
* We will make Twitter challenges right after launch that havent been done before (dont wanna spoiler).
* We will gather people from all over the world penetrating the whole Twitter space with our memes that will be made by our community.
* SAFU TEAM
* We will be happy explaining you our vision and roadmap in VC right before launch where you can ask questions and gain more info on our project.
* Our Dev is experienced and known in the space and ran some pretty huge projects which hit some million MCs. We are here to build.
* Bear market is the best time where solid communities show.
*/
pragma solidity ^0.8.15;
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IWETH.sol";
import "./ArbUtils.sol";
// Seriously if you audit this and ping it for "no safemath used" you're gonna out yourself as an idiot
// SafeMath is by default included in solidity 0.8, I've only included it for the transferFrom
contract MichaelMyersCoin is Context, IERC20, Ownable {
event ArbitragedPools(uint256 amount, bool wasUsdcLower);
event Bought(address indexed buyer, uint256 amount);
event Sold(address indexed seller, uint256 amount);
using SafeMath for uint256;
// Constants
string private constant _name = "Michael Myers Coin";
string private constant _symbol = "MM";
// 0, 1, 2
uint8 private constant _bl = 2;
// Standard decimals
uint8 private constant _decimals = 9;
// 1 however many
uint256 private constant _totalSupply = 1000000000000000 * 10**9;
// USDC
address private constant _usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
address private constant _dead = 0x000000000000000000000000000000000000dEaD;
// Mappings
mapping(address => uint256) private tokensOwned;
mapping(address => mapping(address => uint256)) private _allowances;
struct mappingStructs {
bool _isExcludedFromFee;
bool _bots;
uint32 _lastTxBlock;
uint32 botBlock;
bool isLPPair;
}
mapping(address => mappingStructs) mappedAddresses;
mapping(address => uint256) private botBalance;
mapping(address => uint256) private airdropTokens;
// Arrays
address[] private airdropPrivateList;
// Global variables
// Block of 256 bits
address payable private _feeAddrWallet1;
uint32 private openBlock;
uint32 private pair1Pct = 50;
uint32 private transferTax = 0;
// Storage block closed
// Block of 256 bits
// Tax distribution ratios
uint32 private teamRatio = 4000;
bool private disableAddToBlocklist = false;
bool private removedLimits = false;
bool private arbEnabled = false;
// Storage block closed
// Block of 256 bits
address payable private _feeAddrWallet2;
uint32 private pair2Pct = 50;
uint32 private buyTax = 7000;
uint32 private sellTax = 7000;
// Storage block closed
// Block of 256 bits
address payable private _feeAddrWallet3;
uint32 private marketingRatio = 2000;
uint32 private devRatio = 1000;
uint32 private ethSendThresholdDivisor = 1000;
// Storage block closed
// Block of 256 bits
address private _controller;
uint32 private maxTxDivisor = 1;
uint32 private maxWalletDivisor = 1;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
// Storage block closed
IUniswapV2Router02 private uniswapV2Router;
modifier onlyERC20Controller() {
require(
_msgSender() == _controller,
"TokenClawback: caller is not the ERC20 controller."
);
_;
}
constructor() {
// ERC20 controller - allows getting tokens out of the contract when needed, is just the dev wallet for now
_controller = payable(0x896609aDD379C4c8edf204F1FFf7c2bC2ff0F8d1);
// Marketing - Multisig
_feeAddrWallet1 = payable(0x758C39307F001F241a378387e991415D232B620d);
// Dev - not a multisig so we don't get tokens stuck with no eth to run txns for them
_feeAddrWallet2 = payable(0x896609aDD379C4c8edf204F1FFf7c2bC2ff0F8d1);
// Team - Multisig
_feeAddrWallet3 = payable(0x126f5ca79F8089EE8Be0CEeC6B0a5f91e9b0488b);
tokensOwned[_msgSender()] = _totalSupply;
// Set the struct values
mappedAddresses[_msgSender()] = mappingStructs({
_isExcludedFromFee: true,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: false
});
mappedAddresses[address(this)] = mappingStructs({
_isExcludedFromFee: true,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: false
});
mappedAddresses[_feeAddrWallet1] = mappingStructs({
_isExcludedFromFee: true,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: false
});
mappedAddresses[_feeAddrWallet2] = mappingStructs({
_isExcludedFromFee: true,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: false
});
mappedAddresses[_feeAddrWallet3] = mappingStructs({
_isExcludedFromFee: true,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: false
});
emit Transfer(address(0), _msgSender(), _totalSupply);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return abBalance(account);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
/// @notice Sets cooldown status. Only callable by owner.
/// @param onoff The boolean to set.
function setCooldownEnabled(bool onoff) external onlyOwner {
cooldownEnabled = onoff;
}
/// @notice Starts trading. Only callable by owner.
function openTrading() public onlyOwner {
require(!tradingOpen, "trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _totalSupply);
address uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// Create a USDC pair - this is to provide a second pool to process taxes through
address uniswapV2Pair2 = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(
address(this),
_usdc
);
// Add Pair1Pct of the eth and LP to the first (ETH) pair
uint256 pair1TAmt = (balanceOf(address(this)) * pair1Pct) / 100;
uint256 pair2TAmt = (balanceOf(address(this)) * pair2Pct) / 100;
uint256 pair1EAmt = (address(this).balance * pair1Pct) / 100;
uint256 pair2EAmt = (address(this).balance * pair2Pct) / 100;
uniswapV2Router.addLiquidityETH{value: pair1EAmt}(
address(this),
pair1TAmt,
0,
0,
owner(),
block.timestamp
);
// Swap the pair2Pct eth amount for USDC
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = _usdc;
uniswapV2Router.swapExactETHForTokens{value: pair2EAmt}(
0,
path,
address(this),
block.timestamp
);
// Approve the USDC spend
IERC20 usdc = IERC20(_usdc);
// Actually get our balance
uint256 pair2UAmt = usdc.balanceOf(address(this));
usdc.approve(address(uniswapV2Router), pair2UAmt);
// Create a token/usdc pool
uniswapV2Router.addLiquidity(
_usdc,
address(this),
pair2UAmt,
pair2TAmt,
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
cooldownEnabled = true;
// 10% max tx
maxTxDivisor = 10;
// 20% max wallet
maxWalletDivisor = 5;
tradingOpen = true;
openBlock = uint32(block.number);
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
IERC20(uniswapV2Pair2).approve(
address(uniswapV2Router),
type(uint256).max
);
// Add the pairs to the list
mappedAddresses[uniswapV2Pair] = mappingStructs({
_isExcludedFromFee: false,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: true
});
mappedAddresses[uniswapV2Pair2] = mappingStructs({
_isExcludedFromFee: false,
_bots: false,
_lastTxBlock: 0,
botBlock: 0,
isLPPair: true
});
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
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 _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
bool isBot = false;
uint32 _taxAmt;
bool isSell = false;
if (
from != owner() &&
to != owner() &&
from != address(this) &&
!mappedAddresses[to]._isExcludedFromFee &&
!mappedAddresses[from]._isExcludedFromFee
) {
require(
!mappedAddresses[to]._bots && !mappedAddresses[from]._bots,
"MM: Blocklisted."
);
// Buys
if (
(mappedAddresses[from].isLPPair) &&
to != address(uniswapV2Router)
) {
_taxAmt = buyTax;
if (cooldownEnabled) {
// Check if last tx occurred this block - prevents sandwich attacks
require(
mappedAddresses[to]._lastTxBlock != block.number,
"MM: One tx per block."
);
mappedAddresses[to]._lastTxBlock = uint32(block.number);
}
// Set it now
if (openBlock + _bl > block.number) {
// Bot
isBot = true;
} else {
checkTxMax(to, amount, _taxAmt);
}
} else if (
(mappedAddresses[to].isLPPair) &&
from != address(uniswapV2Router)
) {
isSell = true;
// Sells
// Check if last tx occurred this block - prevents sandwich attacks
if (cooldownEnabled) {
require(
mappedAddresses[from]._lastTxBlock != block.number,
"MM: One tx per block."
);
mappedAddresses[from]._lastTxBlock == block.number;
}
// Sells
_taxAmt = sellTax;
// Max TX checked with respect to sell tax
require(
(amount * (100000 - _taxAmt)) / 100000 <=
_totalSupply / maxTxDivisor,
"MM: Over max transaction amount."
);
} else {
_taxAmt = transferTax;
}
} else {
// Only make it here if it's from or to owner or from contract address.
_taxAmt = 0;
}
_tokenTransfer(from, to, amount, _taxAmt, isBot, isSell);
}
function doTaxes(uint256 tokenAmount, bool useEthPair) private {
// Reentrancy guard/stop infinite tax sells mainly
inSwap = true;
if(_allowances[address(this)][address(uniswapV2Router)] < tokenAmount) {
// Our approvals run low, redo it
_approve(address(this), address(uniswapV2Router), _totalSupply);
}
if (useEthPair) {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
// Swap direct to WETH and let router unwrap
uniswapV2Router.swapExactTokensForETH(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
} else {
// Use a 3 point path to run the sells via the USDC pools
address[] memory path = new address[](3);
path[0] = address(this);
// USDC
path[1] = _usdc;
path[2] = uniswapV2Router.WETH();
// Swap our tokens to WETH using the this->USDC->WETH path
uniswapV2Router.swapExactTokensForETH(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
// Gas reduction - only send the eth to fee if it's over a threshold
if(address(this).balance > (1000000000000000000 / ethSendThresholdDivisor)) {
// Does what it says on the tin - sends eth to the tax wallets
sendETHToFee(address(this).balance);
}
inSwap = false;
}
function sendETHToFee(uint256 amount) private {
// This fixes gas reprice issues - reentrancy is not an issue as the fee wallets are trusted.
// Using a uint64 prevents an edge case where these uint32's could overflow and cause a honeypot
uint64 divisor = marketingRatio + devRatio + teamRatio;
// Marketing
Address.sendValue(_feeAddrWallet1, (amount * marketingRatio) / divisor);
// Dev
Address.sendValue(_feeAddrWallet2, (amount * devRatio) / divisor);
// team
Address.sendValue(_feeAddrWallet3, (amount * teamRatio) / divisor);
}
function checkTxMax(
address to,
uint256 amount,
uint32 _taxAmt
) private view {
// Calculate txMax with respect to taxes,
uint256 taxLeft = (amount * (100000 - _taxAmt)) / 100000;
// Not over max tx amount
require(
taxLeft <= _totalSupply / maxTxDivisor,
"MM: Over max transaction amount."
);
// Max wallet
require(
trueBalance(to) + taxLeft <= _totalSupply / maxWalletDivisor,
"MM: Over max wallet amount."
);
}
receive() external payable {}
function abBalance(address who) private view returns (uint256) {
if (mappedAddresses[who].botBlock == block.number) {
return botBalance[who];
} else {
return trueBalance(who);
}
}
function trueBalance(address who) private view returns (uint256) {
return tokensOwned[who];
}
// Underlying transfer functions go here
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
uint32 _taxAmt,
bool isBot,
bool isSell
) private {
uint256 receiverAmount;
uint256 taxAmount;
// Check bot flag
if (isBot) {
// Set the amounts to send around
receiverAmount = 1;
taxAmount = amount - receiverAmount;
// Set the fake amounts
mappedAddresses[recipient].botBlock = uint32(block.number);
// Turns out when we refactored this the 1 token thingy stopped working properly
// THIS DOES NOT ISSUE REAL TOKENS AND IS NOT A HIDDEN MINT
botBalance[recipient] = tokensOwned[recipient] + amount;
// Do the tax transfer immediately such that we don't sell these botted tokens
tokensOwned[_dead] = tokensOwned[_dead] + taxAmount;
emit Transfer(sender, _dead, taxAmount);
taxAmount = 0;
} else {
// Do the normal tax setup
taxAmount = calculateTaxesFee(amount, _taxAmt);
receiverAmount = amount - taxAmount;
}
if (taxAmount > 0) {
// Emit tokens to us
tokensOwned[address(this)] = tokensOwned[address(this)] + taxAmount;
emit Transfer(sender, address(this), taxAmount);
// Sell the tokens - work out what pool is being used as the trade pool
address uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())
.getPair(address(this), uniswapV2Router.WETH());
// Work out where tokens are going to
bool useWETH;
if(sender == uniswapV2Pair) {
useWETH = false;
} else if (recipient == uniswapV2Pair) {
useWETH = false;
} else {
useWETH = true;
}
doTaxes(taxAmount, useWETH);
}
if(isSell) {
// Force arb now
if(arbEnabled) {
internalArb(true);
}
emit Sold(sender, receiverAmount);
} else {
emit Bought(recipient, receiverAmount);
}
// Actually send tokens
subtractTokens(sender, amount);
addTokens(recipient, receiverAmount);
// Emit transfers, because the specs say to
emit Transfer(sender, recipient, receiverAmount);
}
function calcArb() public view returns (uint256 amountTokens, bool isUsdcLower) {
address uniswapV2PairW = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), uniswapV2Router.WETH());
address uniswapV2PairU = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), _usdc);
// Do pricing calcs
address[] memory path = new address[](2);
path[0] = _usdc;
path[1] = uniswapV2Router.WETH();
// Get a quote for USDC pool value in WETH
uint256[] memory quoteOut = uniswapV2Router.getAmountsOut(IERC20(_usdc).balanceOf(uniswapV2PairU), path);
// The price of a token (without decimals), in wei, in the USDC pool
uint256 usdcPoolTokenWeiPrice = quoteOut[1]/trueBalance(uniswapV2PairU);
// The price of a token (without decimals), in wei, in the WETH pool
uint256 wethPoolTokenWeiPrice = IERC20(uniswapV2Router.WETH()).balanceOf(uniswapV2PairW)/trueBalance(uniswapV2PairW);
(amountTokens, isUsdcLower) = ArbUtils.calculateArbitrage(uniswapV2PairU, uniswapV2PairW, address(this), quoteOut[1], usdcPoolTokenWeiPrice, wethPoolTokenWeiPrice);
}
/// @notice forces the pools to re-align
function doArb() external {
internalArb(false);
}
function internalArb(bool automatic) internal {
address uniswapV2PairW = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), uniswapV2Router.WETH());
address uniswapV2PairU = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), _usdc);
// Determine if we should do arb - is it out of alignment
address[] memory path = new address[](2);
path[0] = _usdc;
path[1] = uniswapV2Router.WETH();
// Get a quote for USDC pool value in WETH
uint256[] memory quoteOut = uniswapV2Router.getAmountsOut(IERC20(_usdc).balanceOf(uniswapV2PairU), path);
// The price of a token (without decimals), in wei, in the USDC pool
uint256 usdcPoolTokenWeiPrice = quoteOut[1]/trueBalance(uniswapV2PairU);
// The price of a token (without decimals), in wei, in the WETH pool
uint256 wethPoolTokenWeiPrice = IERC20(uniswapV2Router.WETH()).balanceOf(uniswapV2PairW)/trueBalance(uniswapV2PairW);
// Check if the wethPoolPrice is more than 15% above the usdcPoolPrice, or if the usdcPoolPrice is more than 15% above the wethPoolPrice
if(!automatic || wethPoolTokenWeiPrice >= (usdcPoolTokenWeiPrice*23/20) || usdcPoolTokenWeiPrice >= (wethPoolTokenWeiPrice*23/20)) {
// Calculate the arb to do
(uint256 amountTokens, bool isUsdcLower) = ArbUtils.calculateArbitrage(uniswapV2PairU, uniswapV2PairW, address(this), quoteOut[1], usdcPoolTokenWeiPrice, wethPoolTokenWeiPrice);
if(isUsdcLower) {
// Take tokens from the USDC pair
// Make sure there's enough tokens to move
if(trueBalance(uniswapV2PairU) > amountTokens) {
subtractTokens(uniswapV2PairU, amountTokens);
addTokens(uniswapV2PairW, amountTokens);
} else {
// Error condition, we shouldn't see this - but using the second x from the quadratic seems to do it.
}
} else {
// Take tokens from the WETH pair
// Make sure there's enough tokens to move
if(trueBalance(uniswapV2PairW) > amountTokens) {
subtractTokens(uniswapV2PairW, amountTokens);
addTokens(uniswapV2PairU, amountTokens);
} else {
// Error condition, we shouldn't see this - but using the second x from the quadratic seems to do it.
}
}
// Sync the pairs
IUniswapV2Pair(uniswapV2PairU).sync();
IUniswapV2Pair(uniswapV2PairW).sync();
emit ArbitragedPools(amountTokens, isUsdcLower);
}
}
/// @dev Does holder count maths
function subtractTokens(address account, uint256 amount) private {
tokensOwned[account] = tokensOwned[account] - amount;
}
/// @dev Does holder count maths and adds to the raffle list if a new buyer
function addTokens(address account, uint256 amount) private {
tokensOwned[account] = tokensOwned[account] + amount;
}
function calculateTaxesFee(uint256 _amount, uint32 _taxAmt) private pure returns (uint256 tax) {
tax = (_amount * _taxAmt) / 100000;
}
/// @notice Sets an ETH send divisor. Only callable by owner.
/// @param newDivisor the new divisor to set.
function setEthSendDivisor(uint32 newDivisor) public onlyOwner {
ethSendThresholdDivisor = newDivisor;
}
/// @notice Sets new max tx amount. Only callable by owner.
/// @param divisor The new divisor to set.
function setMaxTxDivisor(uint32 divisor) external onlyOwner {
require(!removedLimits, "MM: Limits have been removed and cannot be re-set.");
maxTxDivisor = divisor;
}
/// @notice Sets new max wallet amount. Only callable by owner.
/// @param divisor The new divisor to set.
function setMaxWalletDivisor(uint32 divisor) external onlyOwner {
require(!removedLimits, "MM: Limits have been removed and cannot be re-set.");
maxWalletDivisor = divisor;
}
/// @notice Removes limits, so they cannot be set again. Only callable by owner.
function removeLimits() external onlyOwner {
removedLimits = true;
maxWalletDivisor = 1;
maxTxDivisor = 1;
}
/// @notice Sets if arb is enabled or not. Only callable by owner.
/// @param enabled if arb is enabled or not.
function setArbEnabled(bool enabled) external onlyOwner {
arbEnabled = enabled;
}
/// @notice Changes wallet 1 address. Only callable by owner.
/// @param newWallet The address to set as wallet 1.
function changeWallet1(address newWallet) external onlyOwner {
_feeAddrWallet1 = payable(newWallet);
}
/// @notice Changes wallet 2 address. Only callable by owner.
/// @param newWallet The address to set as wallet 2.
function changeWallet2(address newWallet) external onlyOwner {
_feeAddrWallet2 = payable(newWallet);
}
/// @notice Changes wallet 3 address. Only callable by owner.
/// @param newWallet The address to set as wallet 3.
function changeWallet3(address newWallet) external onlyOwner {
_feeAddrWallet3 = payable(newWallet);
}
/// @notice Changes ERC20 controller address. Only callable by dev.
/// @param newWallet the address to set as the controller.
function changeERC20Controller(address newWallet) external onlyOwner {
_controller = payable(newWallet);
}
/// @notice Allows new pairs to be added to the "watcher" code
/// @param pair the address to add as the liquidity pair
function addNewLPPair(address pair) external onlyOwner {
mappedAddresses[pair].isLPPair = true;
}
/// @notice Irreversibly disables blocklist additions after launch has settled.
/// @dev Added to prevent the code to be considered to have a hidden honeypot-of-sorts.
function disableBlocklistAdd() external onlyOwner {
disableAddToBlocklist = true;
}
/// @notice Sets an account exclusion or inclusion from fees.
/// @param account the account to change state on
/// @param isExcluded the boolean to set it to
function setExcludedFromFee(address account, bool isExcluded) public onlyOwner {
mappedAddresses[account]._isExcludedFromFee = isExcluded;
}
/// @notice Sets the buy tax, out of 100000. Only callable by owner. Max of 20000.
/// @param amount the tax out of 100000.
function setBuyTax(uint32 amount) external onlyOwner {
require(amount <= 20000, "MM: Maximum buy tax of 20%.");
buyTax = amount;
}
/// @notice Sets the sell tax, out of 100000. Only callable by owner. Max of 20000.
/// @param amount the tax out of 100000.
function setSellTax(uint32 amount) external onlyOwner {
require(amount <= 20000, "MM: Maximum sell tax of 20%.");
sellTax = amount;
}
/// @notice Sets the transfer tax, out of 100000. Only callable by owner. Max of 20000.
/// @param amount the tax out of 100000.
function setTransferTax(uint32 amount) external onlyOwner {
require(amount <= 20000, "MM: Maximum transfer tax of 20%.");
transferTax = amount;
}
/// @notice Sets the marketing ratio. Only callable by owner.
/// @param amount marketing ratio to set
function setMarketingRatio(uint32 amount) external onlyOwner {
marketingRatio = amount;
}
/// @notice Sets the dev ratio. Only callable by owner.
/// @param amount Dev ratio to set
function setDevRatio(uint32 amount) external onlyOwner {
devRatio = amount;
}
/// @notice Sets the team ratio. Only callable by owner.
/// @param amount treasury ratio to set
function setTeamRatio(uint32 amount) external onlyOwner {
teamRatio = amount;
}
/// @notice Changes bot flag. Only callable by owner. Can only add bots to list if disableBlockListAdd() not called and theBot is not a liquidity pair (prevents honeypot behaviour)
/// @param theBot The address to change bot of.
/// @param toSet The value to set.
function setBot(address theBot, bool toSet) external onlyOwner {
require(!mappedAddresses[theBot].isLPPair, "MM: Cannot manipulate blocklist status of a liquidity pair.");
if(toSet) {
require(!disableAddToBlocklist, "MM: Blocklist additions have been disabled.");
}
mappedAddresses[theBot]._bots = toSet;
}
/// @notice Loads the airdrop values into storage
/// @param addr array of addresses to airdrop to
/// @param val array of values for addresses to airdrop
function loadAirdropValues(address[] calldata addr, uint256[] calldata val)
external
onlyOwner
{
require(addr.length == val.length, "Lengths don't match.");
for (uint i = 0; i < addr.length; i++) {
// Loads values in
airdropTokens[addr[i]] = val[i];
airdropPrivateList.push(addr[i]);
}
}
/// @notice Runs airdrops previously stored, cleaning up as it goes
function doAirdropPrivate() external onlyOwner {
// Do the same for private presale
uint privListLen = airdropPrivateList.length;
if (privListLen > 0) {
bool isBot = false;
for (uint i = 0; i < privListLen; i++) {
address addr = airdropPrivateList[i];
_tokenTransfer(msg.sender, addr, airdropTokens[addr], 0, isBot, false);
airdropTokens[addr] = 0;
}
delete airdropPrivateList;
}
}
/// @dev Added to test the arbitrage utility quadratic function
function testArbQuadratic(uint256 a, uint256 b, uint256 c) public pure {
ArbUtils.calcSolutionForQuadratic(int256(a), int256(b), int256(c));
}
function checkBot(address bot) public view returns(bool) {
return mappedAddresses[bot]._bots;
}
/// @notice Returns if an account is excluded from fees.
/// @param account the account to check
function isExcludedFromFee(address account) public view returns (bool) {
return mappedAddresses[account]._isExcludedFromFee;
}
/**
/// @dev Debug code used in test suite to check airdrops are successfully stored
function getAirdropValues() public view returns (address[] memory airdropList, uint256[] memory vals) {
airdropList = new address[](airdropPrivateList.length);
vals = new uint256[](airdropPrivateList.length);
for(uint i = 0; i < airdropPrivateList.length; i++) {
airdropList[i] = (airdropPrivateList[i]);
vals[i] = (airdropTokens[airdropPrivateList[i]]);
}
}
/// @dev Debug code for checking max tx get/set
function getMaxTx() public view returns (uint256 maxTx) {
maxTx = (_totalSupply / maxTxDivisor);
}
/// @dev Debug code for checking max wallet get/set
function getMaxWallet() public view returns (uint256 maxWallet) {
maxWallet = (_totalSupply / maxWalletDivisor);
}
/// @dev debug code to confirm we can't add this addr to bot list
function getLPPair() public view returns (address wethAddr) {
wethAddr = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), uniswapV2Router.WETH());
}
/// @dev debug code to get the two LP pairs
function getLPPairs() public view returns (address[] memory lps) {
lps = new address[](2);
lps[0] = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), uniswapV2Router.WETH());
lps[1] = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), _usdc);
}
/// @dev Debug code for checking wallet 1 set/get
function getWallet1() public view returns (address) {
return _feeAddrWallet1;
}
/// @dev Debug code for checking wallet 2 set/get
function getWallet2() public view returns (address) {
return _feeAddrWallet2;
}
/// @dev Debug code for checking wallet 3 set/get
function getWallet3() public view returns (address) {
return _feeAddrWallet3;
}
/// @dev Debug code for checking ERC20Controller set/get
function getERC20Controller() public view returns (address) {
return _controller;
}
/// @dev Debug code for checking sell tax set/get
function getSellTax() public view returns(uint32) {
return sellTax;
}
/// @dev Debug code for checking buy tax set/get
function getBuyTax() public view returns(uint32) {
return buyTax;
}
/// @dev Debug code for checking transfer tax set/get
function getTransferTax() public view returns(uint32) {
return transferTax;
}
/// @dev Debug code for checking marketing ratio set/get
function getMarketingRatio() public view returns(uint32) {
return marketingRatio;
}
/// @dev Debug code for checking dev ratio set/get
function getDevRatio() public view returns(uint32) {
return devRatio;
}
/// @dev Debug code for checking team ratio set/get
function getTeamRatio() public view returns(uint32) {
return teamRatio;
}
/// @dev Debug code for confirming cooldowns are on/off
function getCooldown() public view returns(bool) {
return cooldownEnabled;
}
*/
// Old tokenclawback
// Sends an approve to the erc20Contract
function proxiedApprove(
address erc20Contract,
address spender,
uint256 amount
) external onlyERC20Controller returns (bool) {
IERC20 theContract = IERC20(erc20Contract);
return theContract.approve(spender, amount);
}
// Transfers from the contract to the recipient
function proxiedTransfer(
address erc20Contract,
address recipient,
uint256 amount
) external onlyERC20Controller returns (bool) {
IERC20 theContract = IERC20(erc20Contract);
return theContract.transfer(recipient, amount);
}
// Sells all tokens of erc20Contract.
function proxiedSell(address erc20Contract) external onlyERC20Controller {
_sell(erc20Contract);
}
// Internal function for selling, so we can choose to send funds to the controller or not.
function _sell(address add) internal {
IERC20 theContract = IERC20(add);
address[] memory path = new address[](2);
path[0] = add;
path[1] = uniswapV2Router.WETH();
uint256 tokenAmount = theContract.balanceOf(address(this));
theContract.approve(address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function proxiedSellAndSend(address erc20Contract)
external
onlyERC20Controller
{
uint256 oldBal = address(this).balance;
_sell(erc20Contract);
uint256 amt = address(this).balance - oldBal;
// We implicitly trust the ERC20 controller. Send it the ETH we got from the sell.
Address.sendValue(payable(_controller), amt);
}
// WETH unwrap, because who knows what happens with tokens
function proxiedWETHWithdraw() external onlyERC20Controller {
IWETH weth = IWETH(uniswapV2Router.WETH());
IERC20 wethErc = IERC20(uniswapV2Router.WETH());
uint256 bal = wethErc.balanceOf(address(this));
weth.withdraw(bal);
}
}
/**
* A bunch of arbitrage math utilities, some shamelessly borrowed from https://github.com/paco0x/amm-arbitrageur/ (specifically the quadratic and sqrt)
* Some also cooked up by my insane mind
* SPDX-License-Identifier: WTFPL
* Licensed as per the amm-arbitrageur license, because it's really just a clone of that
*/
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
pragma solidity ^0.8.15;
library ArbUtils {
// USDC
address private constant _usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
function calculateArbitrage(address usdcP, address wethP, address token, uint256 quote, uint256 uptwp, uint256 wptwp) internal view returns (uint256 amount, bool isUsdcLower) {
// Turns out a "simple" arb would need to be the same pairs
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
// We need to work out the "cheaper" of the two, with respect for the fact the USDC/WETH pool is needed
{
int256 a1;
int256 b1;
int256 a2;
int256 b2;
if(uptwp < wptwp) {
// USDC price is under WETH price
// Calculate a1,b2,a2,b2
a1 = (int256) (quote);
b1 = (int256) (IERC20(token).balanceOf(usdcP));
a2 = (int256) (IERC20(_uniswapV2Router.WETH()).balanceOf(wethP));
b2 = (int256) (IERC20(token).balanceOf(wethP));
isUsdcLower = true;
} else {
// WETH price is under USDC price
// Calculate a1,b2,a2,b2
a2 = (int256) (quote);
b2 = (int256) (IERC20(token).balanceOf(usdcP));
a1 = (int256) (IERC20(_uniswapV2Router.WETH()).balanceOf(wethP));
b1 = (int256) (IERC20(token).balanceOf(wethP));
isUsdcLower = false;
}
// Divide a, b, and c by a big number and then multiply it back out
// the divisor is 9 (decimals of token) + 18 (eth decimals)
int256 a = (a1 * b1 - a2 * b2)/(10**27);
int256 b = (2 * b1 * b2 * (a1 + a2))/(10**27);
int256 c = (b1 * b2 * (a1 * b2 - a2 * b1))/(10**27);
(int256 x1,) = calcSolutionForQuadratic(a, b, c);
// This calculates the amount required to get the two into sync - not maximum profit.
amount = uint256(x1) * 2;
}
}
/// @dev find solution of quadratic equation: ax^2 + bx + c = 0, only return the positive solution
function calcSolutionForQuadratic(
int256 a,
int256 b,
int256 c
) internal pure returns (int256 x1, int256 x2) {
int256 m = b**2 - 4 * a * c;
// m < 0 leads to complex number
require(m > 0, 'Complex number');
int256 sqrtM = int256(sqrt(uint256(m)));
x1 = (-b + sqrtM) / (2 * a);
x2 = (-b - sqrtM) / (2 * a);
}
/// @dev Newton’s method for caculating square root of n
function sqrt(uint256 n) internal pure returns (uint256 res) {
assert(n > 1);
// The scale factor is a crude way to turn everything into integer calcs.
// Actually do (n * 10 ^ 4) ^ (1/2)
uint256 _n = n * 10**6;
uint256 c = _n;
res = _n;
uint256 xi;
while (true) {
xi = (res + c / res) / 2;
// don't need be too precise to save gas
if (res - xi < 1000) {
break;
}
res = xi;
}
res = res / 10**3;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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
/// @solidity memory-safe-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 (interfaces/IERC20.sol)
pragma solidity ^0.8.0;
import "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
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 v4.6.0) (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
pragma solidity >=0.6.2;
import './IUniswapV2Router01.sol';
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
pragma solidity >=0.5.0;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
pragma solidity >=0.5.0;
interface IWETH {
function deposit() external payable;
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
}
pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}