/** *Submitted for verification at Etherscan.io on 2018-02-21 */ pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract Ownable { address public owner; /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeERC20 { function safeTransfer(ERC20Basic token, address to, uint256 value) internal { assert(token.transfer(to, value)); } function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal { assert(token.transferFrom(from, to, value)); } function safeApprove(ERC20 token, address spender, uint256 value) internal { assert(token.approve(spender, value)); } } contract CanReclaimToken is Ownable { using SafeERC20 for ERC20Basic; /** * @dev Reclaim all ERC20Basic compatible tokens * @param token ERC20Basic The address of the token contract */ function reclaimToken(ERC20Basic token) external onlyOwner { uint256 balance = token.balanceOf(this); token.safeTransfer(owner, balance); } } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. */ function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract CappedBurnToken is StandardToken, Ownable { uint256 public cap; function CappedBurnToken(uint256 _cap) public { require(_cap > 0); cap = _cap; } event Mint(address indexed to, uint256 amount); function mint(address _to, uint256 _amount) onlyOwner public returns (bool) { require(totalSupply_.add(_amount) <= cap); totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); Mint(_to, _amount); Transfer(address(0), _to, _amount); return true; } event Burn(address indexed burner, uint256 value); /// Permanently destroy tokens function burn(uint256 _value) public { address burner = msg.sender; require(_value <= balances[burner]); balances[burner] = balances[burner].sub(_value); totalSupply_ = totalSupply_.sub(_value); cap = cap.sub(_value); Burn(burner, _value); } /// Same as burn without reducing cap, allows re-minting function unmint(uint256 _value) public { address burner = msg.sender; require(_value <= balances[burner]); balances[burner] = balances[burner].sub(_value); totalSupply_ = totalSupply_.sub(_value); } } contract DetailedERC20 is ERC20 { string public name; string public symbol; uint8 public decimals; function DetailedERC20(string _name, string _symbol, uint8 _decimals) public { name = _name; symbol = _symbol; decimals = _decimals; } } contract XDTT is CappedBurnToken(1000000), DetailedERC20, CanReclaimToken { uint256 public salePriceWei; uint256 public saleSharesAvail; address internal saleWallet; uint256 public saleSharesSold; function XDTT() DetailedERC20("XD TEST TOKEN", "XDTT", 0) public { saleWallet = address(0); salePriceWei = 0; saleSharesAvail = 0; } /// Tokens are manually issued to addresses that have sent ether /// The contract sells a limited amount to ensure no oversale happens due to off-chain purchases function() public payable { require(saleWallet != address(0)); require(saleSharesAvail > 0); require(salePriceWei > 0); uint256 shareTarget = msg.value / salePriceWei; require(shareTarget > 0); require(shareTarget <= saleSharesAvail); saleWallet.transfer(msg.value); saleSharesAvail = saleSharesAvail.sub(shareTarget); saleSharesSold = saleSharesSold.add(shareTarget); } function setSale(uint256 newPriceWei, uint256 newSharesAvail, address newWallet) onlyOwner public { salePriceWei = newPriceWei; saleSharesAvail = newSharesAvail; saleWallet = newWallet; } }