Contract Source Code:
File 1 of 1 : ZevToken
pragma solidity 0.8.20;
// SPDX-License-Identifier: MIT
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @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 `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @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);
}
interface IERC20Zevdata is IERC20{
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Zevdata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_balances[account] += amount;
}
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
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);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens 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 amount) 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, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() external virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
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");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or 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 {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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);
}
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
}
contract TokenHandler is Ownable {
function sendTokenToOwner(address token) external onlyOwner {
if(IERC20(token).balanceOf(address(this)) > 0){
SafeERC20.safeTransfer(IERC20(token),owner(), IERC20(token).balanceOf(address(this)));
}
}
}
interface IWETH {
function deposit() external payable;
}
interface ILpPair {
function sync() external;
}
interface IDexRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(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 swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external;
function swapTokensForExactTokens(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts);
function addLiquidityETH(address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
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 getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IDexFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
contract ZevToken is ERC20, Ownable {
mapping (address => bool) public exemptFromFees;
mapping (address => bool) public exemptFromLimits;
uint256 public immutable launchTime_;
mapping (address => bool) public isAMMPair;
uint256 public maxTransaction;
uint256 public maxWallet;
address public projectAddress;
address public immutable zevAddress;
address public immutable zentinelAddress;
struct Taxes {
uint64 projectTax;
uint64 totalTax;
uint64 initialTax;
}
struct TokensForTax {
uint112 tokensForProject;
uint112 tokensForZev;
bool gasSaver;
}
TokensForTax public tokensForTax;
Taxes public buyTax;
Taxes public sellTax;
string public website;
string public twitter;
string public telegram;
TokenHandler public immutable tokenHandler;
bool public limitsInEffect = true;
bool private swapping;
uint256 public swapTokensAtAmt;
address public lpPair;
IDexRouter public dexRouter;
IERC20 public pairedToken;
uint64 public constant FEE_DIVISOR = 10000;
mapping (address => bool) verifiedAddress;
uint256 public constant verificationDuration = 20 minutes;
// events
event UpdatedMaxTransaction(uint256 newMax);
event UpdatedMaxWallet(uint256 newMax);
event SetExemptFromFees(address _address, bool _isExempt);
event SetExemptFromLimits(address _address, bool _isExempt);
event RemovedLimits();
event UpdatedBuyTax(uint256 newAmt);
event UpdatedSellTax(uint256 newAmt);
// constructor
constructor(StructsLibrary.CreationParams memory params, address _zevAddress, address _zentinel)
ERC20(params._name, params._symbol)
{
_mint(msg.sender, params._supply);
website = params._website;
twitter = params._twitter;
telegram = params._telegram;
launchTime_ = params._launchTime;
maxTransaction = totalSupply() * params._maxTransaction / 10000;
maxWallet = totalSupply() * params._maxWallet / 10000;
swapTokensAtAmt = totalSupply() * 5 / 10000;
projectAddress = params._projectAddress;
zevAddress = _zevAddress;
zentinelAddress = _zentinel;
buyTax.projectTax = uint64(params._buyTax);
buyTax.totalTax = buyTax.projectTax;
buyTax.initialTax = uint64(params._buyTax);
require(params._buyTax <= 1000, "Tax too high");
sellTax.projectTax = uint64(params._sellTax);
sellTax.totalTax = sellTax.projectTax;
sellTax.initialTax = uint64(params._sellTax);
require(params._sellTax <= 1000, "Tax too high");
tokensForTax.gasSaver = true;
tokenHandler = new TokenHandler();
dexRouter = IDexRouter(params._router);
pairedToken = IERC20(dexRouter.WETH());
lpPair = IDexFactory(dexRouter.factory()).createPair(address(this), address(pairedToken));
isAMMPair[lpPair] = true;
exemptFromLimits[lpPair] = true;
exemptFromLimits[address(this)] = true;
exemptFromLimits[address(0xdead)] = true;
exemptFromFees[msg.sender] = true;
exemptFromFees[address(this)] = true;
exemptFromLimits[address(0xdead)] = true;
_approve(address(owner()), address(dexRouter), totalSupply());
_approve(address(this), address(dexRouter), type(uint256).max);
}
function _transfer(
address from,
address to,
uint256 amount
) internal virtual override {
if(!exemptFromFees[from] && !exemptFromFees[to]){
if(limitsInEffect){
checkLimits(from, to, amount);
}
amount -= handleTax(from, to, amount);
}
super._transfer(from,to,amount);
}
function checkLimits(address from, address to, uint256 amount) internal view {
require(block.timestamp >= launchTime_, "Not Launched Yet");
if(!isAMMPair[to] && block.timestamp <= launchTime_ + verificationDuration){
require(verifiedAddress[to] && to == tx.origin, "Buy via Zev dapp only");
}
// buy
if (isAMMPair[from] && !exemptFromLimits[to]) {
require(amount <= maxTransaction, "Max Tx exceeded");
require(amount + balanceOf(to) <= maxWallet, "Max Wallet Exceeded");
}
// sell
else if (isAMMPair[to] && !exemptFromLimits[from]) {
require(amount <= maxTransaction, "Max Tx exceeded");
}
else if(!exemptFromLimits[to]) {
require(amount + balanceOf(to) <= maxWallet, "Max Wallet Exceeded");
}
}
function handleTax(address from, address to, uint256 amount) internal returns (uint256){
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmt;
if(canSwap && !swapping && isAMMPair[to]) {
swapBack();
}
uint256 tax = 0;
Taxes memory taxes;
if (isAMMPair[to]){
taxes = sellTax;
} else if(isAMMPair[from]){
taxes = buyTax;
}
if(taxes.totalTax > 0){
TokensForTax memory tokensForTaxUpdate = tokensForTax;
tax = uint128(amount * taxes.totalTax / FEE_DIVISOR);
tokensForTaxUpdate.tokensForProject += uint80(tax * 9 / 10 / 1e9);
tokensForTaxUpdate.tokensForZev += uint80(tax / 10 / 1e9);
tokensForTax = tokensForTaxUpdate;
super._transfer(from, address(this), tax);
}
return tax;
}
function swapTokensForPAIREDTOKEN(uint256 tokenAmt) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = address(pairedToken);
// make the swap
dexRouter.swapExactTokensForTokensSupportingFeeOnTransferTokens(
tokenAmt,
0, // accept any amt of ETH
path,
address(tokenHandler),
block.timestamp
);
tokenHandler.sendTokenToOwner(address(pairedToken));
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
TokensForTax memory tokensForTaxMem = tokensForTax;
uint256 totalTokensToSwap = uint256(tokensForTaxMem.tokensForProject) + uint256(tokensForTaxMem.tokensForZev);
if(contractBalance == 0) {return;}
if(contractBalance > swapTokensAtAmt * 40){
contractBalance = swapTokensAtAmt * 40;
}
swapTokensForPAIREDTOKEN(contractBalance);
uint256 pairedTokenBalance = pairedToken.balanceOf(address(this));
if(tokensForTaxMem.tokensForZev > 0){
SafeERC20.safeTransfer(pairedToken, zevAddress, (pairedTokenBalance * tokensForTaxMem.tokensForZev / totalTokensToSwap));
}
pairedTokenBalance = pairedToken.balanceOf(address(this));
if(pairedTokenBalance > 0){
SafeERC20.safeTransfer(pairedToken, projectAddress, pairedTokenBalance);
}
tokensForTaxMem.tokensForZev = 0;
tokensForTaxMem.tokensForProject = 0;
tokensForTax = tokensForTaxMem;
}
// owner functions
function setExemptFromFees(address _address, bool _isExempt) external ownerCanChange {
require(_address != address(0), "Zero Address");
require(_address != address(this), "cannot remove token from exemption");
exemptFromFees[_address] = _isExempt;
emit SetExemptFromFees(_address, _isExempt);
}
function setExemptFromLimits(address _address, bool _isExempt) external ownerCanChange {
require(_address != address(0), "Zero Address");
if(!_isExempt){
require(_address != lpPair, "Cannot remove pair");
}
exemptFromLimits[_address] = _isExempt;
emit SetExemptFromLimits(_address, _isExempt);
}
function updateMaxTransaction(uint256 newNumInTokens) external ownerCanChange {
require(newNumInTokens >= (totalSupply() * 25 / 10000)/(10**decimals()), "Too low");
maxTransaction = newNumInTokens * (10**decimals());
emit UpdatedMaxTransaction(maxTransaction);
}
function updateMaxWallet(uint256 newNumInTokens) external ownerCanChange {
require(newNumInTokens >= (totalSupply() * 25 / 10000)/(10**decimals()), "Too low");
maxWallet = newNumInTokens * (10**decimals());
emit UpdatedMaxWallet(maxWallet);
}
function updateBuyTax(uint64 _projectTax) external onlyOwner {
Taxes memory taxes = buyTax;
taxes.projectTax = _projectTax;
taxes.totalTax = _projectTax;
require(taxes.totalTax <= taxes.initialTax, "Keep tax at or below Initial Tax");
emit UpdatedBuyTax(taxes.totalTax);
buyTax = taxes;
}
function updateSellTax(uint64 _projectTax) external onlyOwner {
Taxes memory taxes = sellTax;
taxes.projectTax = _projectTax;
taxes.totalTax = _projectTax;
require(taxes.totalTax <= taxes.initialTax, "Keep tax at or below Initial Tax");
emit UpdatedSellTax(taxes.totalTax);
sellTax = taxes;
}
function removeLimits() external ownerCanChange {
limitsInEffect = false;
emit RemovedLimits();
}
function airdropToWallets(address[] calldata wallets, uint256[] calldata amountsInWei) external onlyOwner {
require(wallets.length == amountsInWei.length, "arrays length mismatch");
for(uint256 i = 0; i < wallets.length; i++){
super._transfer(msg.sender, wallets[i], amountsInWei[i]);
}
}
function rescueTokens(address _token, address _to) external onlyOwner {
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
require(_token != address(this), "cannot take native tokens");
SafeERC20.safeTransfer(IERC20(_token),_to, _contractBalance);
}
// modifiers
modifier ownerCanChange {
require(owner() == _msgSender(), "caller not owner");
require(block.timestamp >= launchTime_ + verificationDuration, "Too early");
_;
}
function updateProjectAddress(address _address) external ownerCanChange {
require(_address != address(0), "zero address");
projectAddress = _address;
}
modifier onlyZentinel {
require(zentinelAddress == _msgSender(), "Caller not Zentinel");
_;
}
// Zentinel Function
function setVerified(address _address) external onlyZentinel {
verifiedAddress[_address] = true;
}
}
interface ITokenFactory {
function generateToken(StructsLibrary.CreationParams memory params)
external
payable returns (address);
}
interface ITokenLocker {
function lock(
address owner,
address token,
bool isLpToken,
uint256 amount,
uint256 unlockDate,
string memory description
) external returns (uint256 lockId);
}
contract ZevTokenFactory is Ownable, ITokenFactory {
mapping (address => bool) public authorizedAddress;
address public zentinelAddress;
address public zevAddress;
ITokenLocker public tokenLocker;
event NewTokenCreated(address indexed newToken);
constructor(address _tokenLocker, address _zevTreasuryAddress, address _zentinelAddress){
authorizedAddress[msg.sender] = true;
tokenLocker = ITokenLocker(_tokenLocker);
zevAddress = _zevTreasuryAddress;
zentinelAddress = _zentinelAddress;
}
modifier onlyAuthorized {
require(authorizedAddress[msg.sender], "Not Authorized");
_;
}
function updateTokenLocker(address _address) external onlyOwner {
require(_address != address(0), "Zero address");
tokenLocker = ITokenLocker(_address);
}
function updateZevAddress(address _address) external onlyOwner {
require(_address != address(0), "Zero address");
zevAddress = _address;
}
function updateZentinelAddress(address _address) external onlyOwner {
require(_address != address(0), "Zero address");
zentinelAddress = _address;
}
function updateAuthorized(address _address, bool _isAuthorized) external onlyOwner {
authorizedAddress[_address] = _isAuthorized;
}
function generateToken(StructsLibrary.CreationParams memory params
)
external
payable
onlyAuthorized
returns (address)
{
ZevToken newToken = new ZevToken(params, zevAddress, zentinelAddress);
emit NewTokenCreated(address(newToken));
IDexRouter(params._router).addLiquidityETH{value: msg.value}(address(newToken), params._supply * params._liquidityPercent / 100, 0, 0, address(this), block.timestamp);
if(params._airdropWallets.length > 0){
newToken.airdropToWallets(params._airdropWallets, params._airdropAmounts);
}
if(newToken.balanceOf(address(this)) > 0){
address[] memory remainderDestination = new address[](1);
remainderDestination[0] = params._newOwner;
uint256[] memory remainderAmount = new uint256[](1);
remainderAmount[0] = newToken.balanceOf(address(this));
newToken.airdropToWallets(remainderDestination, remainderAmount);
}
IERC20 lpPair = IERC20(newToken.lpPair());
uint256 lpPairBalance = lpPair.balanceOf(address(this));
lpPair.approve(address(tokenLocker), lpPairBalance);
tokenLocker.lock(
params._newOwner,
address(lpPair),
true,
lpPairBalance,
params._launchTime + 30 days,
string(abi.encodePacked(IERC20Zevdata(address(newToken)).name(), " LP"))
);
newToken.transferOwnership(params._newOwner);
return address(newToken);
}
}
library StructsLibrary {
struct CreationParams {
address _tokenFactory;
uint256 _launchTime;
string _name;
string _symbol;
uint256 _supply;
uint256 _maxWallet;
uint256 _maxTransaction;
uint256 _liquidityPercent;
address _newOwner;
address[] _airdropWallets;
uint256[] _airdropAmounts;
uint256 _buyTax;
uint256 _sellTax;
address _router;
address _projectAddress;
string _website;
string _twitter;
string _telegram;
}
}