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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
/*
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\ $$$$/ /$$/ | $$$$$ | $$| $$__ $$ |____ $$| $$__ $$ /$$_____/ /$$__ $$
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| $$ \ $$ /$$/ | $$ | $$| $$ | $$| $$$$$$$| $$ | $$| $$$$$$$| $$$$$$$
|__/ |__/|__/ |__/ |__/|__/ |__/ \_______/|__/ |__/ \_______/ \_______/
Contract: ERC-20 Token X7104
This contract will NOT be renounced.
The following are the only functions that can be called on the contract that affect the contract:
function setLiquidityHub(address liquidityHub_) external onlyOwner {
require(!liquidityHubFrozen);
liquidityHub = ILiquidityHub(liquidityHub_);
}
function setDiscountAuthority(address discountAuthority_) external onlyOwner {
require(!discountAuthorityFrozen);
discountAuthority = IDiscountAuthority(discountAuthority_);
}
function setFeeNumerator(uint256 feeNumerator_) external onlyOwner {
require(feeNumerator_ <= maxFeeNumerator);
feeNumerator = feeNumerator_;
}
function setAMM(address ammAddress, bool isAMM) external {
require(msg.sender == address(liquidityHub) || msg.sender == owner(), "Only the owner or the liquidity hub may add a new pair");
ammPair[ammAddress] = isAMM;
}
function setOffRampPair(address ammAddress) external {
require(msg.sender == address(liquidityHub) || msg.sender == owner(), "Only the owner or the liquidity hub may add a new pair");
offRampPair = ammAddress;
}
function freezeLiquidityHub() external onlyOwner {
require(!liquidityHubFrozen);
liquidityHubFrozen = true;
}
function freezeDiscountAuthority() external onlyOwner {
require(!discountAuthorityFrozen);
discountAuthorityFrozen = true;
}
These functions will be passed to DAO governance once the ecosystem stabilizes.
*/
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor(address owner_) {
_transferOwnership(owner_);
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
require(owner() == msg.sender, "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 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);
}
contract ERC20 is 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 = msg.sender;
_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 = msg.sender;
_approve(owner, spender, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = msg.sender;
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = msg.sender;
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = msg.sender;
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");
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, 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);
}
}
}
}
interface ILiquidityHub {
function processFees(address) external;
}
interface IDiscountAuthority {
function discountRatio(address) external returns (uint256, uint256);
}
contract X7104 is ERC20, Ownable {
IDiscountAuthority public discountAuthority;
ILiquidityHub public liquidityHub;
mapping(address => bool) public ammPair;
address public offRampPair;
// max 6% fee
uint256 public maxFeeNumerator = 600;
// 2 % fee
uint256 public feeNumerator = 200;
uint256 public feeDenominator = 10000;
bool discountAuthorityFrozen;
bool liquidityHubFrozen;
event LiquidityHubSet(address indexed liquidityHub);
event DiscountAuthoritySet(address indexed discountAuthority);
event FeeNumeratorSet(uint256 feeNumerator);
event AMMSet(address indexed pairAddress, bool isAMM);
event OffRampPairSet(address indexed offRampPair);
event LiquidityHubFrozen();
event DiscountAuthorityFrozen();
constructor(
address discountAuthority_,
address liquidityHub_
) ERC20("X7104", "X7104") Ownable(address(0x7000a09c425ABf5173FF458dF1370C25d1C58105)) {
discountAuthority = IDiscountAuthority(discountAuthority_);
liquidityHub = ILiquidityHub(liquidityHub_);
_mint(address(0x7000a09c425ABf5173FF458dF1370C25d1C58105), 100000000 * 10**18);
}
function setLiquidityHub(address liquidityHub_) external onlyOwner {
require(!liquidityHubFrozen);
liquidityHub = ILiquidityHub(liquidityHub_);
emit LiquidityHubSet(liquidityHub_);
}
function setDiscountAuthority(address discountAuthority_) external onlyOwner {
require(!discountAuthorityFrozen);
discountAuthority = IDiscountAuthority(discountAuthority_);
emit DiscountAuthoritySet(discountAuthority_);
}
function setFeeNumerator(uint256 feeNumerator_) external onlyOwner {
require(feeNumerator_ <= maxFeeNumerator);
feeNumerator = feeNumerator_;
emit FeeNumeratorSet(feeNumerator_);
}
function setAMM(address ammAddress, bool isAMM) external {
require(msg.sender == address(liquidityHub) || msg.sender == owner(), "Only the owner or the liquidity hub may add a new pair");
ammPair[ammAddress] = isAMM;
emit AMMSet(ammAddress, isAMM);
}
function setOffRampPair(address ammAddress) external {
require(msg.sender == address(liquidityHub) || msg.sender == owner(), "Only the owner or the liquidity hub may add a new pair");
offRampPair = ammAddress;
emit OffRampPairSet(ammAddress);
}
function freezeLiquidityHub() external onlyOwner {
require(!liquidityHubFrozen);
liquidityHubFrozen = true;
emit LiquidityHubFrozen();
}
function freezeDiscountAuthority() external onlyOwner {
require(!discountAuthorityFrozen);
discountAuthorityFrozen = true;
emit DiscountAuthorityFrozen();
}
function circulatingSupply() external view returns (uint256) {
return totalSupply() - balanceOf(address(0)) - balanceOf(address(0x000000000000000000000000000000000000dEaD));
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
uint256 transferAmount = amount;
if (
from == address(liquidityHub)
|| to == address(liquidityHub)
) {
super._transfer(from, to, amount);
return;
}
if (
ammPair[to] || ammPair[from]
) {
(uint256 feeModifierNumerator, uint256 feeModifierDenominator) = discountAuthority.discountRatio(msg.sender);
if (feeModifierNumerator > feeModifierDenominator || feeModifierDenominator == 0) {
feeModifierNumerator = 1;
feeModifierDenominator = 1;
}
uint256 feeAmount = amount * feeNumerator * feeModifierNumerator / feeDenominator / feeModifierDenominator;
super._transfer(from, address(liquidityHub), feeAmount);
transferAmount = amount - feeAmount;
}
if (
to == offRampPair
) {
liquidityHub.processFees(address(this));
}
super._transfer(from, to, transferAmount);
}
function rescueETH() external {
(bool success,) = payable(address(liquidityHub)).call{value: address(this).balance}("");
require(success);
}
function rescueTokens(address tokenAddress) external {
IERC20(tokenAddress).transfer(address(liquidityHub), IERC20(tokenAddress).balanceOf(address(this)));
}
} |