Contract Source Code:
File 1 of 1 : FOMO
// SPDX-License-Identifier: MIT
/*
Website: https://fomonetwork.io
Telegram: https://t.me/FOMONetwork
Twitter: https://twitter.com/FOMO_Network
*/
pragma solidity ^0.8.1;
library Address {
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;
}
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);
}
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");
}
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);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
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);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
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);
}
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);
}
}
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);
}
}
}
pragma solidity ^0.8.0;
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, 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 from, address to, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
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 to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, 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) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
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;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
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;
}
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);
}
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);
}
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);
}
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 _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);
}
}
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IERC20Permit {
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
function nonces(address owner) external view returns (uint256);
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
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 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));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1, "Math: mulDiv overflow");
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
}
}
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
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(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB)
external
returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
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 >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
pragma solidity 0.8.19;
contract FOMO is ERC20, Ownable {
using SafeERC20 for IERC20;
uint256 private constant MAX = ~uint256(0);
uint8 private _decimals;
///////////////////////////////////////////////////////////////////////////
address public baseTokenForMarket;
bool private inSwapAndLiquify;
uint24 public sellLiquidityFee;
uint24 public buyLiquidityFee;
uint24 public sellMarketingFee;
uint24 public buyMarketingFee;
address public marketingWallet;
uint256 public minAmountToTakeFee;
uint256 public maxWallet;
uint256 public maxTransactionAmount;
address public mainRouter;
address public mainPair;
mapping(address => bool) public isExcludedFromMaxTransactionAmount;
mapping(address => bool) public isExcludedFromFee;
mapping(address => bool) public automatedMarketMakerPairs;
uint256 private _liquidityFeeTokens;
uint256 private _marketingFeeTokens;
event UpdateLiquidityFee(
uint24 newSellLiquidityFee,
uint24 newBuyLiquidityFee,
uint24 oldSellLiquidityFee,
uint24 oldBuyLiquidityFee
);
event UpdateMarketingFee(
uint24 newSellMarketingFee,
uint24 newBuyMarketingFee,
uint24 oldSellMarketingFee,
uint24 oldBuyMarketingFee
);
event UpdateMarketingWallet(
address indexed newMarketingWallet,
address indexed oldMarketingWallet
);
event ExcludedFromMaxTransactionAmount(address indexed account, bool isExcluded);
event UpdateMinAmountToTakeFee(uint256 newMinAmountToTakeFee, uint256 oldMinAmountToTakeFee);
event SetAutomatedMarketMakerPair(address indexed pair, bool value);
event ExcludedFromFee(address indexed account, bool isEx);
event SwapAndLiquify(
uint256 tokensForLiquidity,
uint256 baseTokenForLiquidity
);
event MarketingFeeTaken(
uint256 marketingFeeTokens,
uint256 marketingFeeBaseTokenSwapped
);
event MainRouterUpdated(
address mainRouter, address mainPair, address baseTokenForMarket
);
event UpdateMaxWallet(uint256 newMaxWallet, uint256 oldMaxWallet);
event UpdateMaxTransactionAmount(uint256 newMaxTransactionAmount, uint256 oldMaxTransactionAmount);
///////////////////////////////////////////////////////////////////////////////
constructor(
address _mainRouter,
address _marketingWallet
) ERC20("FOMO Network", "FOMO") {
_decimals = 18;
_mint(msg.sender, 500000000000000000000000000);
mainRouter=_mainRouter;
baseTokenForMarket = IUniswapV2Router02(mainRouter).WETH();
require(_marketingWallet!=address(0), "marketing wallet can not be 0");
require(_mainRouter!=address(0), "Router address can not be 0");
marketingWallet=_marketingWallet;
emit UpdateMarketingWallet(
marketingWallet,
address(0)
);
_approve(address(this), mainRouter, MAX);
emit MainRouterUpdated(mainRouter, mainPair, baseTokenForMarket);
mainPair = IUniswapV2Factory(IUniswapV2Router02(mainRouter).factory()).createPair(
address(this),
baseTokenForMarket
);
maxWallet=500000000000000000000000000;
emit UpdateMaxWallet(maxWallet, 0);
maxTransactionAmount=500000000000000000000000000;
emit UpdateMaxTransactionAmount(maxTransactionAmount, 0);
sellLiquidityFee=0;
buyLiquidityFee=0;
emit UpdateLiquidityFee(sellLiquidityFee, buyLiquidityFee, 0, 0);
sellMarketingFee=30000;
buyMarketingFee=30000;
emit UpdateMarketingFee(
sellMarketingFee,
buyMarketingFee,
0,
0
);
minAmountToTakeFee=50000000000000000000000;
emit UpdateMinAmountToTakeFee(minAmountToTakeFee, 0);
isExcludedFromFee[address(this)]=true;
isExcludedFromFee[marketingWallet]=true;
isExcludedFromFee[_msgSender()]=true;
isExcludedFromFee[address(0xdead)] = true;
isExcludedFromMaxTransactionAmount[address(0xdead)]=true;
isExcludedFromMaxTransactionAmount[address(this)]=true;
isExcludedFromMaxTransactionAmount[marketingWallet]=true;
isExcludedFromMaxTransactionAmount[_msgSender()]=true;
_setAutomatedMarketMakerPair(mainPair, true);
}
function decimals() public view override returns (uint8) {
return _decimals;
}
function updateMainPair(
address _mainRouter
) external onlyOwner {
baseTokenForMarket = IUniswapV2Router02(mainRouter).WETH();
if(mainRouter != _mainRouter){
_approve(address(this), _mainRouter, MAX);
mainRouter = _mainRouter;
}
mainPair = IUniswapV2Factory(IUniswapV2Router02(mainRouter).factory()).createPair(
address(this),
baseTokenForMarket
);
emit MainRouterUpdated(mainRouter, mainPair, baseTokenForMarket);
_setAutomatedMarketMakerPair(mainPair, true);
}
/////////////////////////////////////////////////////////////////////////////////
modifier lockTheSwap() {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
function updateLiquidityFee(
uint24 _sellLiquidityFee,
uint24 _buyLiquidityFee
) external onlyOwner {
require(
_sellLiquidityFee + sellMarketingFee <= 200000,
"sell fee <= 20%"
);
require(_buyLiquidityFee + buyMarketingFee <= 200000, "buy fee <= 20%");
emit UpdateLiquidityFee(
_sellLiquidityFee,
_buyLiquidityFee,
sellLiquidityFee,
buyLiquidityFee
);
sellLiquidityFee = _sellLiquidityFee;
buyLiquidityFee = _buyLiquidityFee;
}
function updateMaxWallet(uint256 _maxWallet) external onlyOwner {
require(_maxWallet>=totalSupply() / 10000, "maxWallet >= total supply / 10000");
emit UpdateMaxWallet(_maxWallet, maxWallet);
maxWallet = _maxWallet;
}
function updateMaxTransactionAmount(uint256 _maxTransactionAmount)
external
onlyOwner
{
require(_maxTransactionAmount>=totalSupply() / 10000, "maxTransactionAmount >= total supply / 10000");
emit UpdateMaxTransactionAmount(_maxTransactionAmount, maxTransactionAmount);
maxTransactionAmount = _maxTransactionAmount;
}
function updateMarketingFee(
uint24 _sellMarketingFee,
uint24 _buyMarketingFee
) external onlyOwner {
require(
_sellMarketingFee + sellLiquidityFee <= 200000,
"sell fee <= 20%"
);
require(_buyMarketingFee + buyLiquidityFee <= 200000, "buy fee <= 20%");
emit UpdateMarketingFee(
_sellMarketingFee,
_buyMarketingFee,
sellMarketingFee,
buyMarketingFee
);
sellMarketingFee = _sellMarketingFee;
buyMarketingFee = _buyMarketingFee;
}
function updateMarketingWallet(
address _marketingWallet
) external onlyOwner {
require(_marketingWallet != address(0), "marketing wallet can't be 0");
emit UpdateMarketingWallet(_marketingWallet,
marketingWallet);
marketingWallet = _marketingWallet;
isExcludedFromFee[_marketingWallet] = true;
isExcludedFromMaxTransactionAmount[_marketingWallet] = true;
}
function updateMinAmountToTakeFee(uint256 _minAmountToTakeFee)
external
onlyOwner
{
require(_minAmountToTakeFee > 0, "minAmountToTakeFee > 0");
emit UpdateMinAmountToTakeFee(_minAmountToTakeFee, minAmountToTakeFee);
minAmountToTakeFee = _minAmountToTakeFee;
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(
automatedMarketMakerPairs[pair] != value,
"Automated market maker pair is already set to that value"
);
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
isExcludedFromMaxTransactionAmount[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function excludeFromFee(address account, bool isEx) external onlyOwner {
require(isExcludedFromFee[account] != isEx, "already");
isExcludedFromFee[account] = isEx;
emit ExcludedFromFee(account, isEx);
}
function excludeFromMaxTransactionAmount(address account, bool isEx)
external
onlyOwner
{
require(isExcludedFromMaxTransactionAmount[account]!=isEx, "already");
isExcludedFromMaxTransactionAmount[account] = isEx;
emit ExcludedFromMaxTransactionAmount(account, isEx);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
uint256 contractTokenBalance = balanceOf(address(this));
uint256 totalTokensTaken = _liquidityFeeTokens + _marketingFeeTokens;
bool overMinimumTokenBalance = totalTokensTaken >=
minAmountToTakeFee && totalTokensTaken <= contractTokenBalance;
// Take Fee
if (
!inSwapAndLiquify &&
balanceOf(mainPair) > 0 &&
overMinimumTokenBalance &&
automatedMarketMakerPairs[to]
) {
takeFee();
}
uint256 _liquidityFee;
uint256 _marketingFee;
// If any account belongs to isExcludedFromFee account then remove the fee
if (
!inSwapAndLiquify &&
!isExcludedFromFee[from] &&
!isExcludedFromFee[to]
) {
// Buy
if (automatedMarketMakerPairs[from]) {
_liquidityFee = amount * buyLiquidityFee / 1000000;
_marketingFee = amount * buyMarketingFee / 1000000;
}
// Sell
else if (automatedMarketMakerPairs[to]) {
_liquidityFee = amount * sellLiquidityFee / 1000000;
_marketingFee = amount * sellMarketingFee / 1000000;
}
uint256 _feeTotal = _liquidityFee + _marketingFee;
if (_feeTotal > 0) super._transfer(from, address(this), _feeTotal);
amount = amount - _liquidityFee - _marketingFee;
_liquidityFeeTokens = _liquidityFeeTokens + _liquidityFee;
_marketingFeeTokens = _marketingFeeTokens + _marketingFee;
}
super._transfer(from, to, amount);
if (!inSwapAndLiquify) {
if (!isExcludedFromMaxTransactionAmount[from]) {
require(
amount <= maxTransactionAmount,
"ERC20: exceeds transfer limit"
);
}
if (!isExcludedFromMaxTransactionAmount[to]) {
require(
balanceOf(to) <= maxWallet,
"ERC20: exceeds max wallet limit"
);
}
}
}
function takeFee() private lockTheSwap {
// Halve the amount of liquidity tokens
uint256 tokensForLiquidity = _liquidityFeeTokens / 2;
uint256 initialBaseTokenBalance = address(this).balance;
uint256 baseTokenForLiquidity;
uint256 tokensForSwap=tokensForLiquidity+_marketingFeeTokens;
if(tokensForSwap>0)
swapTokensForBaseToken(tokensForSwap);
uint256 baseTokenBalance = address(this).balance - initialBaseTokenBalance;
uint256 baseTokenAmountForMarketing = (baseTokenBalance *
_marketingFeeTokens) / tokensForSwap;
baseTokenForLiquidity = baseTokenBalance - baseTokenAmountForMarketing;
if(baseTokenAmountForMarketing>0){
(bool success, )=address(marketingWallet).call{value: baseTokenAmountForMarketing}("");
if(success){
emit MarketingFeeTaken(0, baseTokenAmountForMarketing);
}
}
if (tokensForLiquidity > 0 && baseTokenForLiquidity > 0) {
addLiquidity(tokensForLiquidity, baseTokenForLiquidity);
emit SwapAndLiquify(tokensForLiquidity, baseTokenForLiquidity);
}
_marketingFeeTokens = 0;
_liquidityFeeTokens = 0;
if(balanceOf(address(this))>0){
if(owner()!=address(0)){
_transfer(address(this), owner(), balanceOf(address(this)));
}else{
_transfer(address(this), address(0xdead), balanceOf(address(this)));
}
}
}
function swapTokensForBaseToken(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = baseTokenForMarket;
IUniswapV2Router02(mainRouter).swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of BaseToken
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 baseTokenAmount)
private
{
IUniswapV2Router02(mainRouter).addLiquidityETH{value: baseTokenAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(0xdead),
block.timestamp
);
}
function withdrawETH() external onlyOwner {
(bool success, )=address(owner()).call{value: address(this).balance}("");
require(success, "Failed in withdrawal");
}
function withdrawToken(address token) external onlyOwner{
require(address(this) != token, "Not allowed");
IERC20(token).safeTransfer(owner(), IERC20(token).balanceOf(address(this)));
}
receive() external payable {}
}