Contract Name:
SphynxToken
Contract Source Code:
File 1 of 1 : SphynxToken
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
/*
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_ _ _ ____ _____ ______ _ _____ _ _ __
/\ | | | (_) / __ \ | __ \ | ____(_) | __ \| | | | / _|
/ \ | | | _ _ __ | | | |_ __ ___ | | | | ___| |__ _ | |__) | | __ _| |_| |_ ___ _ __ _ __ ___
/ /\ \ | | | | | '_ \ | | | | '_ \ / _ \ | | | |/ _ \ __| | | | ___/| |/ _` | __| _/ _ \| '__| '_ ` _ \
/ ____ \| | | | | | | | | |__| | | | | __/ | |__| | __/ | | | | | | | (_| | |_| || (_) | | | | | | | |
/_/ \_\_|_| |_|_| |_| \____/|_| |_|\___| |_____/ \___|_| |_| |_| |_|\__,_|\__|_| \___/|_| |_| |_| |_|
Website: https://sphynxlabs.co/
Dapp: https://thesphynx.co/
telegram: http://t.me/sphynxlabs
GitBook: https://sphynx-labs.gitbook.io/sphynx-labs
Medimum: http://sphynxlabs.medium.com/
Discord: https://discord.com/invite/WbVnk6WS
Twitter: https://x.com/sphynxlabs
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor() internal {}
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
contract Manageable is Context {
address private _manager;
event ManagementTransferred(address indexed previousManager, address indexed newManager);
/**
* @dev Initializes the contract setting the deployer as the initial manager.
*/
constructor() internal {
address msgSender = _msgSender();
_manager = msgSender;
emit ManagementTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current manager.
*/
function manager() public view returns (address) {
return _manager;
}
/**
* @dev Throws if called by any account other than the manager.
*/
modifier onlyManager() {
require(_manager == _msgSender(), 'Manageable: caller is not the manager');
_;
}
/**
* @dev Leaves the contract without manager. It will not be possible to call
* `onlyManager` functions anymore. Can only be called by the current manager.
*
* NOTE: Renouncing management will leave the contract without an manager,
* thereby removing any functionality that is only available to the manager.
*/
function renounceManagement() public onlyManager {
emit ManagementTransferred(_manager, address(0));
_manager = address(0);
}
/**
* @dev Transfers management of the contract to a new account (`newManager`).
* Can only be called by the current manager.
*/
function transferManagement(address newManager) public onlyManager {
_transferManagement(newManager);
}
/**
* @dev Transfers management of the contract to a new account (`newManager`).
*/
function _transferManagement(address newManager) internal {
require(newManager != address(0), 'Manageable: new manager is the zero address');
emit ManagementTransferred(_manager, newManager);
_manager = newManager;
}
}
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() internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), 'Ownable: caller is not the owner');
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = 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 onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0), 'Ownable: new owner is the zero address');
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8);
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the bep token owner.
*/
function getOwner() external view returns (address);
/**
* @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);
}
library SafeMath {
/**
* @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) {
uint256 c = a + b;
require(c >= a, 'SafeMath: addition overflow');
return c;
}
/**
* @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 sub(a, b, 'SafeMath: subtraction overflow');
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @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) {
// 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 0;
}
uint256 c = a * b;
require(c / a == b, 'SafeMath: multiplication overflow');
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) internal pure returns (uint256) {
return div(a, b, 'SafeMath: division by zero');
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts 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 mod(a, b, 'SafeMath: modulo by zero');
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message 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,
string memory errorMessage
) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x < y ? x : y;
}
// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
function sqrt(uint256 y) internal pure returns (uint256 z) {
if (y > 3) {
z = y;
uint256 x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
}
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
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly {
codehash := extcodehash(account)
}
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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');
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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');
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(
address target,
bytes memory data,
uint256 weiValue,
string memory errorMessage
) private returns (bytes memory) {
require(isContract(target), 'Address: call to non-contract');
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{value: weiValue}(data);
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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract ERC20 is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the bep token owner.
*/
function getOwner() external override view returns (address) {
return owner();
}
/**
* @dev Returns the token name.
*/
function name() public override view returns (string memory) {
return _name;
}
/**
* @dev Returns the token decimals.
*/
function decimals() public override view returns (uint8) {
return _decimals;
}
/**
* @dev Returns the token symbol.
*/
function symbol() public override view returns (string memory) {
return _symbol;
}
/**
* @dev See {ERC20-totalSupply}.
*/
function totalSupply() public override view returns (uint256) {
return _totalSupply;
}
/**
* @dev See {ERC20-balanceOf}.
*/
function balanceOf(address account) public override view returns (uint256) {
return _balances[account];
}
/**
* @dev See {ERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {ERC20-allowance}.
*/
function allowance(address owner, address spender) public override view returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {ERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {ERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for `sender`'s tokens of at least
* `amount`.
*/
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;
}
/**
* @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 {ERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(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 {ERC20-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 returns (bool) {
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(subtractedValue, 'ERC20: decreased allowance below zero')
);
return true;
}
/**
* @dev Destroys `amount` tokens from `msg.sender`, decreasing the total supply.
*
*/
function burn(uint256 amount) public returns (bool) {
_burn(_msgSender(), amount);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is 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:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
_balances[sender] = _balances[sender].sub(amount, 'ERC20: transfer amount exceeds balance');
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal {
require(account != address(0), 'ERC20: mint to the zero address');
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(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 {
require(account != address(0), 'ERC20: burn from the zero address');
_balances[account] = _balances[account].sub(amount, 'ERC20: burn amount exceeds balance');
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is 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 {
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 Destroys `amount` tokens from `account`.`amount` is then deducted
* from the caller's allowance.
*
* See {_burn} and {_approve}.
*/
function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(
account,
_msgSender(),
_allowances[account][_msgSender()].sub(amount, 'ERC20: burn amount exceeds allowance')
);
}
}
library SafeERC20 {
using SafeMath for uint256;
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));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
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'
// solhint-disable-next-line max-line-length
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 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(
value,
'SafeERC20: decreased allowance below zero'
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
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');
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), 'SafeERC20: ERC20 operation did not succeed');
}
}
}
interface ISphynxPair {
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 swapFee() external view returns (uint32);
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;
function setSwapFee(uint32) external;
}
interface ISphynxFactory {
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;
function setSwapFee(address _pair, uint32 _swapFee) external;
}
interface ISphynxRouter01 {
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, uint swapFee) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut, uint swapFee) 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);
}
interface ISphynxRouter02 is ISphynxRouter01 {
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;
}
contract SphynxToken is ERC20, Manageable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
ISphynxRouter02 public sphynxSwapRouter;
address public sphynxSwapPair;
bool private swapping;
address public liquidityWallet = 0x0A8B9CCF99543A451c1990a68997F4580DB29791;
address payable public marketingWallet =
payable(0x3e20C4bFf0f34BA46f9D33599d3aEAa7e815B19f);
uint256 public nativeAmountToSwap = 0.5 ether;
uint256 public marketingFeeOnBuy;
uint256 public burnFeeOnSell;
uint256 public burnFeeOnBuy;
uint256 public totalFeesOnBuy;
uint256 public marketingFeeOnSell;
uint256 public liquidityFeeOnBuy;
uint256 public liquidityFeeOnSell;
uint256 public totalFeesOnSell;
uint256 public blockNumber;
uint256 public liquidityShare = 2;
uint256 public marketingShare = 6;
uint256 public totalShares = 8;
bool public trueBurn = false;
uint256 public burnContractBalance;
bool public SwapAndLiquifyEnabled = false;
uint256 public maxTxAmount = 1000000000 * (10**18); // Initial Max Tx Amount
// exlcude from fees and max transaction amount
mapping(address => bool) private _isExcludedFromFees;
// getting fee addresses
mapping(address => bool) public _isGetFees;
// store addresses that are automated market maker pairs. Any transfer to these addresses
// could be subject to a maximum transfer amount
mapping(address => bool) public automatedMarketMakerPairs;
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
// Contract Events
event ExcludeFromFees(address indexed account, bool isExcluded);
event GetFee(address indexed account, bool isGetFee);
event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event MarketingWalletUpdated(
address indexed newMarketingWallet,
address indexed oldMarketingWallet
);
event UpdateSphynxSwapRouter(
address indexed newAddress,
address indexed oldAddress
);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 nativeReceived,
uint256 tokensIntoLiqudity
);
event UpdateSwapAndLiquify(bool value);
event SetMarketingFee(uint256 onBuy, uint256 onSell);
event SetBurnFee(uint256 onBuy, uint256 onSell);
event SetDistribution(
uint256 liquidity,
uint256 marketing
);
event SetLiquidityFee(uint256 onBuy, uint256 onSell);
event SetNativeAmountToSwap(uint256 nativeAmountToSwap);
event SetBlockNumber(uint256 blockNumber);
event UpdateMaxTxAmount(uint256 txAmount);
constructor() public ERC20("Sphynx Labs", "Sphynx") {
marketingFeeOnBuy = 1;
marketingFeeOnSell = 6;
burnFeeOnSell = 1;
burnFeeOnBuy = 2;
liquidityFeeOnBuy = 1;
liquidityFeeOnSell = 2;
totalFeesOnBuy = marketingFeeOnBuy.add(
liquidityFeeOnBuy
);
totalFeesOnSell = marketingFeeOnSell.add(
liquidityFeeOnSell
);
ISphynxRouter02 _sphynxSwapRouter = ISphynxRouter02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
); // mainnet
// Create a sphynxswap pair for SPHYNX
address _sphynxSwapPair = ISphynxFactory(_sphynxSwapRouter.factory())
.createPair(address(this), _sphynxSwapRouter.WETH());
sphynxSwapRouter = _sphynxSwapRouter;
sphynxSwapPair = _sphynxSwapPair;
_setAutomatedMarketMakerPair(sphynxSwapPair, true);
// exclude from paying fees or having max transaction amount
excludeFromFees(liquidityWallet, true);
excludeFromFees(marketingWallet, true);
excludeFromFees(address(this), true);
excludeFromFees(owner(), true);
// set getFee addresses
_isGetFees[_sphynxSwapPair] = true;
_mint(owner(), 2000000000 * (10**18));
_status = _NOT_ENTERED;
}
receive() external payable {}
function updateSwapAndLiquifiy(bool value) public onlyManager {
SwapAndLiquifyEnabled = value;
emit UpdateSwapAndLiquify(value);
}
function updateLiquidityWallet(address _liquidityWallet)
external
onlyManager
{
liquidityWallet = _liquidityWallet;
}
function updateTrueBurn(bool _value) public onlyManager {
trueBurn = _value;
}
function setMarketingFee(uint256 _onBuy, uint256 _onSell)
external
onlyManager
{
require(_onBuy <= 10 && _onSell <= 10, "SPHYNX: Invalid marketingFee");
marketingFeeOnBuy = _onBuy;
marketingFeeOnSell = _onSell;
totalFeesOnBuy = marketingFeeOnBuy.add(
liquidityFeeOnBuy
);
totalFeesOnSell = marketingFeeOnSell.add(
liquidityFeeOnSell
);
emit SetMarketingFee(_onBuy, _onSell);
}
function setLiquidityFee(uint256 _onBuy, uint256 _onSell)
external
onlyManager
{
require(_onBuy <= 10 && _onSell <= 10, "SPHYNX: Invalid marketingFee");
liquidityFeeOnBuy = _onBuy;
liquidityFeeOnSell = _onSell;
totalFeesOnBuy = liquidityFeeOnBuy.add(
marketingFeeOnBuy
);
totalFeesOnSell = liquidityFeeOnSell.add(
marketingFeeOnSell
);
emit SetLiquidityFee(_onBuy, _onSell);
}
function setBurnFee(uint256 _onBuy, uint256 _onSell) external onlyManager {
require(_onBuy <= 10, "SPHYNX: Invalid burnFee");
require(_onSell <= 10, "SPHYNX: Invalid burnFee");
burnFeeOnBuy = _onBuy;
burnFeeOnSell = _onSell;
emit SetBurnFee(_onBuy, _onSell);
}
function updateShares(
uint256 _liquidity,
uint256 _marketing
) external onlyManager {
liquidityShare = _liquidity;
marketingShare = _marketing;
totalShares = liquidityShare.add(marketingShare);
emit SetDistribution(_liquidity, _marketing);
}
function updateSphynxSwapRouter(address newAddress) public onlyManager {
require(
newAddress != address(sphynxSwapRouter),
"SPHYNX: The router already has that address"
);
emit UpdateSphynxSwapRouter(newAddress, address(sphynxSwapRouter));
sphynxSwapRouter = ISphynxRouter02(newAddress);
address _sphynxSwapPair;
_sphynxSwapPair = ISphynxFactory(sphynxSwapRouter.factory()).getPair(
address(this),
sphynxSwapRouter.WETH()
);
if (_sphynxSwapPair == address(0)) {
_sphynxSwapPair = ISphynxFactory(sphynxSwapRouter.factory())
.createPair(address(this), sphynxSwapRouter.WETH());
}
_setAutomatedMarketMakerPair(sphynxSwapPair, false);
sphynxSwapPair = _sphynxSwapPair;
_setAutomatedMarketMakerPair(sphynxSwapPair, true);
}
function excludeFromFees(address account, bool excluded)
public
onlyManager
{
require(
_isExcludedFromFees[account] != excluded,
"SPHYNX: Account is already the value of 'excluded'"
);
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setFeeAccount(address account, bool isGetFee) public onlyManager {
require(
_isGetFees[account] != isGetFee,
"SPHYNX: Account is already the value of 'isGetFee'"
);
_isGetFees[account] = isGetFee;
emit GetFee(account, isGetFee);
}
function excludeMultipleAccountsFromFees(
address[] calldata accounts,
bool excluded
) public onlyOwner {
for (uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFees[accounts[i]] = excluded;
}
emit ExcludeMultipleAccountsFromFees(accounts, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyManager
{
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(
automatedMarketMakerPairs[pair] != value,
"SPHYNX: Automated market maker pair is already set to that value"
);
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function setNativeAmountToSwap(uint256 _nativeAmount) public onlyManager {
nativeAmountToSwap = _nativeAmount;
emit SetNativeAmountToSwap(nativeAmountToSwap);
}
function updateMarketingWallet(address newMarketingWallet)
public
onlyManager
{
require(
newMarketingWallet != marketingWallet,
"SPHYNX: The marketing wallet is already this address"
);
excludeFromFees(newMarketingWallet, true);
excludeFromFees(marketingWallet, false);
emit MarketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = payable(newMarketingWallet);
}
function setBlockNumber() public onlyOwner {
blockNumber = block.number;
emit SetBlockNumber(blockNumber);
}
function updateMaxTxAmount(uint256 _amount) public onlyManager {
maxTxAmount = _amount;
emit UpdateMaxTxAmount(_amount);
}
function isExcludedFromFees(address account) public view returns (bool) {
return _isExcludedFromFees[account];
}
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");
require(amount <= maxTxAmount, "max-tx-amount-overflow");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (SwapAndLiquifyEnabled) {
uint256 contractTokenBalance = balanceOf(address(this)).sub(burnContractBalance);
uint256 nativeTokenAmount = _getTokenAmountFromNative();
bool canSwap = contractTokenBalance >= nativeTokenAmount;
if (canSwap && !swapping && !automatedMarketMakerPairs[from]) {
swapping = true;
// Set number of tokens to sell to nativeTokenAmount
contractTokenBalance = nativeTokenAmount;
swapTokens(contractTokenBalance);
swapping = false;
}
}
if (_isGetFees[to] && blockNumber == 0) {
blockNumber = block.number;
}
// indicates if fee should be deducted from transfer
bool takeFee = true;
// if any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
if (takeFee) {
if (block.number - blockNumber <= 10) {
uint256 afterBalance = balanceOf(to) + amount;
require(
afterBalance <= 250000 * (10**18),
"Owned amount exceeds the maxOwnedAmount"
);
}
uint256 fees;
if (_isGetFees[from] || _isGetFees[to]) {
if (block.number - blockNumber <= 10) {
fees = amount.mul(99).div(10**2);
} else {
uint256 burnFee;
if (_isGetFees[from]) {
fees = amount.mul(totalFeesOnBuy).div(10**2);
burnFee = burnFeeOnBuy;
} else {
fees = amount.mul(totalFeesOnSell).div(10**2);
burnFee = burnFeeOnSell;
}
uint256 burnAmount = amount.mul(burnFee).div(10**2);
amount = amount.sub(burnAmount);
super._transfer(from, address(this), burnAmount);
if (trueBurn) {
_burn(address(this), burnAmount);
} else {
burnContractBalance = burnContractBalance.add(burnAmount);
}
}
amount = amount.sub(fees);
super._transfer(from, address(this), fees);
}
}
super._transfer(from, to, amount);
}
function swapTokens(uint256 tokenAmount) private {
uint256 tokensForLiquidity = tokenAmount.mul(liquidityShare).div(
totalShares
);
uint256 swapTokenAmount = tokenAmount.sub(tokensForLiquidity);
swapTokensForNative(swapTokenAmount);
uint256 swappedNative = address(this).balance;
uint256 nativeForLiquidity = swappedNative.mul(liquidityShare).div(
totalShares
);
uint256 nativeForMarketing = swappedNative
.sub(nativeForLiquidity);
if (tokensForLiquidity > 0) {
addLiquidity(tokensForLiquidity, nativeForLiquidity);
}
if (nativeForMarketing > 0) {
transferNativeToMarketingWallet(nativeForMarketing);
}
}
function addLiquidity(uint256 tokenAmount, uint256 nativeAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(sphynxSwapRouter), tokenAmount);
// add the liquidity
sphynxSwapRouter.addLiquidityETH{value: nativeAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
liquidityWallet,
block.timestamp
);
}
// Swap tokens on PacakeSwap
function swapTokensForNative(uint256 tokenAmount) private {
// generate the sphynxswap pair path of token -> WETH
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = sphynxSwapRouter.WETH();
_approve(address(this), address(sphynxSwapRouter), tokenAmount);
// make the swap
sphynxSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of Native
path,
address(this),
block.timestamp
);
}
function _getTokenAmountFromNative() internal view returns (uint256) {
uint256 tokenAmount;
address[] memory path = new address[](2);
path[0] = sphynxSwapRouter.WETH();
path[1] = address(this);
uint256[] memory amounts = sphynxSwapRouter.getAmountsOut(
nativeAmountToSwap,
path
);
tokenAmount = amounts[1];
return tokenAmount;
}
function transferNativeToMarketingWallet(uint256 amount) private {
marketingWallet.transfer(amount);
}
function withdrawFromBurn(uint256 _amount) external onlyManager {
burnContractBalance = burnContractBalance.sub(_amount);
super._transfer(address(this), msg.sender, _amount);
}
function withdrawNative() external payable onlyManager {
address payable msgSender = payable(msg.sender);
msgSender.transfer(address(this).balance);
}
function withdrawToken(address _token, uint256 _amount) external onlyManager {
IERC20(_token).safeTransfer(msg.sender, _amount);
}
}