{"ownable.sol":{"content":"pragma solidity ^0.4.25;\r\n\r\n// File: contracts/ownership/Ownable.sol\r\n\r\n/**\r\n * @title Ownable\r\n * @dev The Ownable contract has an owner address, and provides basic authorization control\r\n * functions, this simplifies the implementation of \"user permissions\".\r\n */\r\ncontract Ownable {\r\n  address public owner;\r\n \r\n  /**\r\n   * @dev The Ownable constructor sets the original `owner` of the contract to the sender\r\n   * account.\r\n   */\r\n  constructor() public {\r\n    owner = msg.sender;\r\n  }\r\n\r\n  /**\r\n   * @dev Throws if called by any account other than the owner.\r\n   */\r\n  modifier onlyOwner() {\r\n    require(msg.sender == owner);\r\n    _;\r\n  }\r\n \r\n\r\n}"},"safemath.sol":{"content":"pragma solidity ^0.4.25;\r\n\r\n// File: contracts/math/SafeMath.sol\r\n\r\n/**\r\n * @title SafeMath\r\n * @dev Math operations with safety checks that throw on error\r\n */\r\nlibrary SafeMath {\r\n\r\n  /**\r\n  * @dev Multiplies two numbers, throws on overflow.\r\n  */\r\n  function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {\r\n    if (a == 0) {\r\n      return 0;\r\n    }\r\n    c = a * b;\r\n    assert(c / a == b);\r\n    return c;\r\n  }\r\n\r\n  /**\r\n  * @dev Integer division of two numbers, truncating the quotient.\r\n  */\r\n  function div(uint256 a, uint256 b) internal pure returns (uint256) {\r\n    // assert(b \u003e 0); // Solidity automatically throws when dividing by 0\r\n    // uint256 c = a / b;\r\n    // assert(a == b * c + a % b); // There is no case in which this doesn\u0027t hold\r\n    return a / b;\r\n  }\r\n\r\n  /**\r\n  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).\r\n  */\r\n  function sub(uint256 a, uint256 b) internal pure returns (uint256) {\r\n    assert(b \u003c= a);\r\n    return a - b;\r\n  }\r\n\r\n  /**\r\n  * @dev Adds two numbers, throws on overflow.\r\n  */\r\n  function add(uint256 a, uint256 b) internal pure returns (uint256 c) {\r\n    c = a + b;\r\n    assert(c \u003e= a);\r\n    return c;\r\n  }\r\n}"},"xamatek.sol":{"content":"pragma solidity ^0.4.25;\r\n\r\nimport \"./ownable.sol\";\r\n\r\nimport \"./safemath.sol\";\r\n\r\n// File: contracts/token/ERC20/ERC20Basic.sol\r\n\r\n/**\r\n * @title ERC20Basic\r\n * @dev Simpler version of ERC20 interface\r\n * @dev see https://github.com/ethereum/EIPs/issues/179\r\n */\r\ncontract ERC20Basic {\r\n  function totalSupply() public view returns (uint256);\r\n  function balanceOf(address who) public view returns (uint256);\r\n  function transfer(address to, uint256 value) public returns (bool);\r\n  event Transfer(address indexed from, address indexed to, uint256 value);\r\n}\r\n\r\n// File: contracts/token/ERC20/BasicToken.sol\r\n\r\n/**\r\n * @title Basic token\r\n * @dev Basic version of StandardToken, with no allowances.\r\n */\r\ncontract BasicToken is ERC20Basic {\r\n  using SafeMath for uint256;\r\n\r\n  mapping(address =\u003e uint256) balances;\r\n\r\n  uint256 totalSupply_;\r\n\r\n  /**\r\n  * @dev total number of tokens in existence\r\n  */\r\n  function totalSupply() public view returns (uint256) {\r\n    return totalSupply_;\r\n  }\r\n\r\n  /**\r\n  * @dev transfer token for a specified address\r\n  * @param _to The address to transfer to.\r\n  * @param _value The amount to be transferred.\r\n  */\r\n  function transfer(address _to, uint256 _value) public returns (bool) {\r\n    require(_to != address(0));\r\n    require(_value \u003c= balances[msg.sender]);\r\n\r\n    balances[msg.sender] = balances[msg.sender].sub(_value);\r\n    balances[_to] = balances[_to].add(_value);\r\n    emit Transfer(msg.sender, _to, _value);\r\n    return true;\r\n  }\r\n\r\n  /**\r\n  * @dev Gets the balance of the specified address.\r\n  * @param _owner The address to query the the balance of.\r\n  * @return An uint256 representing the amount owned by the passed address.\r\n  */\r\n  function balanceOf(address _owner) public view returns (uint256) {\r\n    return balances[_owner];\r\n  }\r\n\r\n}\r\n\r\n// File: contracts/token/ERC20/BurnableToken.sol\r\n\r\n/**\r\n * @title Burnable Token\r\n * @dev Token that can be irreversibly burned (destroyed).\r\n */\r\ncontract BurnableToken is BasicToken {\r\n\r\n  event Burn(address indexed burner, uint256 value);\r\n\r\n  /**\r\n   * @dev Burns a specific amount of tokens.\r\n   * @param _value The amount of token to be burned.\r\n   */\r\n  function burn(uint256 _value) public {\r\n    _burn(msg.sender, _value);\r\n  }\r\n\r\n  function _burn(address _who, uint256 _value) internal {\r\n    require(_value \u003c= balances[_who]);\r\n    // no need to require value \u003c= totalSupply, since that would imply the\r\n    // sender\u0027s balance is greater than the totalSupply, which *should* be an assertion failure\r\n\r\n    balances[_who] = balances[_who].sub(_value);\r\n    totalSupply_ = totalSupply_.sub(_value);\r\n    emit Burn(_who, _value);\r\n    emit Transfer(_who, address(0), _value);\r\n  }\r\n}\r\n\r\n// File: contracts/token/ERC20/ERC20.sol\r\n\r\n/**\r\n * @title ERC20 interface\r\n * @dev see https://github.com/ethereum/EIPs/issues/20\r\n */\r\ncontract ERC20 is ERC20Basic {\r\n  function allowance(address owner, address spender) public view returns (uint256);\r\n  function transferFrom(address from, address to, uint256 value) public returns (bool);\r\n  function approve(address spender, uint256 value) public returns (bool);\r\n  event Approval(address indexed owner, address indexed spender, uint256 value);\r\n}\r\n\r\n// File: contracts/token/ERC20/StandardToken.sol\r\n\r\n/**\r\n * @title Standard ERC20 token\r\n *\r\n * @dev Implementation of the basic standard token.\r\n * @dev https://github.com/ethereum/EIPs/issues/20\r\n * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol\r\n */\r\ncontract StandardToken is ERC20, BasicToken {\r\n\r\n  mapping (address =\u003e mapping (address =\u003e uint256)) internal allowed;\r\n\r\n\r\n  /**\r\n   * @dev Transfer tokens from one address to another\r\n   * @param _from address The address which you want to send tokens from\r\n   * @param _to address The address which you want to transfer to\r\n   * @param _value uint256 the amount of tokens to be transferred\r\n   */\r\n  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {\r\n    require(_to != address(0));\r\n    require(_value \u003c= balances[_from]);\r\n    require(_value \u003c= allowed[_from][msg.sender]);\r\n\r\n    balances[_from] = balances[_from].sub(_value);\r\n    balances[_to] = balances[_to].add(_value);\r\n    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);\r\n    emit Transfer(_from, _to, _value);\r\n    return true;\r\n  }\r\n\r\n  /**\r\n   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.\r\n   *\r\n   * Beware that changing an allowance with this method brings the risk that someone may use both the old\r\n   * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this\r\n   * race condition is to first reduce the spender\u0027s allowance to 0 and set the desired value afterwards:\r\n   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\r\n   * @param _spender The address which will spend the funds.\r\n   * @param _value The amount of tokens to be spent.\r\n   */\r\n  function approve(address _spender, uint256 _value) public returns (bool) {\r\n    allowed[msg.sender][_spender] = _value;\r\n    emit Approval(msg.sender, _spender, _value);\r\n    return true;\r\n  }\r\n\r\n  /**\r\n   * @dev Function to check the amount of tokens that an owner allowed to a spender.\r\n   * @param _owner address The address which owns the funds.\r\n   * @param _spender address The address which will spend the funds.\r\n   * @return A uint256 specifying the amount of tokens still available for the spender.\r\n   */\r\n  function allowance(address _owner, address _spender) public view returns (uint256) {\r\n    return allowed[_owner][_spender];\r\n  }\r\n\r\n  /**\r\n   * @dev Increase the amount of tokens that an owner allowed to a spender.\r\n   *\r\n   * approve should be called when allowed[_spender] == 0. To increment\r\n   * allowed value is better to use this function to avoid 2 calls (and wait until\r\n   * the first transaction is mined)\r\n   * From MonolithDAO Token.sol\r\n   * @param _spender The address which will spend the funds.\r\n   * @param _addedValue The amount of tokens to increase the allowance by.\r\n   */\r\n  function increaseApproval(address _spender, uint _addedValue) public returns (bool) {\r\n    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);\r\n    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\r\n    return true;\r\n  }\r\n\r\n  /**\r\n   * @dev Decrease the amount of tokens that an owner allowed to a spender.\r\n   *\r\n   * approve should be called when allowed[_spender] == 0. To decrement\r\n   * allowed value is better to use this function to avoid 2 calls (and wait until\r\n   * the first transaction is mined)\r\n   * From MonolithDAO Token.sol\r\n   * @param _spender The address which will spend the funds.\r\n   * @param _subtractedValue The amount of tokens to decrease the allowance by.\r\n   */\r\n  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {\r\n    uint oldValue = allowed[msg.sender][_spender];\r\n    if (_subtractedValue \u003e oldValue) {\r\n      allowed[msg.sender][_spender] = 0;\r\n    } else {\r\n      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);\r\n    }\r\n    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\r\n    return true;\r\n  }\r\n\r\n}\r\n \r\ncontract xamatek is StandardToken, BurnableToken, Ownable {\r\n    // Constants\r\n    string  public constant name = \"Xamatek\";\r\n    string  public constant symbol = \"XAK\";\r\n    uint8   public constant decimals = 18;\r\n    uint256 public constant INITIAL_SUPPLY      = 6000000000 * (10 ** uint256(decimals));\r\n\r\n    mapping(address =\u003e bool) public balanceLocked;   \r\n    \r\n    \r\n    uint public amountRaised;\r\n    uint256 public buyPrice = 100;\r\n    bool public crowdsaleClosed = true;\r\n    bool public transferEnabled = true;\r\n\r\n\r\n    constructor() public {\r\n      totalSupply_ = INITIAL_SUPPLY;\r\n      balances[msg.sender] = INITIAL_SUPPLY;\r\n      emit Transfer(0x0, msg.sender, INITIAL_SUPPLY);\r\n    }\r\n \r\n\r\n    function _transfer(address _from, address _to, uint _value) internal {     \r\n        require (balances[_from] \u003e= _value);               // Check if the sender has enough\r\n        require (balances[_to] + _value \u003e balances[_to]); // Check for overflows\r\n   \r\n        balances[_from] = balances[_from].sub(_value);                         // Subtract from the sender\r\n        balances[_to] = balances[_to].add(_value);                            // Add the same to the recipient\r\n \r\n        emit Transfer(_from, _to, _value);\r\n    }\r\n\r\n    function setPrice( uint256 newBuyPrice) onlyOwner public {\r\n        buyPrice = newBuyPrice;\r\n    }\r\n\r\n    function closeBuy(bool closebuy) onlyOwner public {\r\n        crowdsaleClosed = closebuy;\r\n    }\r\n\r\n    function () external payable {\r\n        require(!crowdsaleClosed);\r\n        uint amount = msg.value ;               // calculates the amount\r\n        amountRaised = amountRaised.add(amount);\r\n        _transfer(owner, msg.sender, amount.mul(buyPrice)); \r\n        owner.transfer(amount);\r\n    }\r\n \r\n    function enableTransfer(bool _enable) onlyOwner external {\r\n        transferEnabled = _enable;\r\n    }\r\n\r\n    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {\r\n        require(transferEnabled);\r\n        require(!balanceLocked[_from] );\r\n\r\n        return super.transferFrom(_from, _to, _value);\r\n    }\r\n\r\n    function transfer(address _to, uint256 _value) public returns (bool) {\r\n        require(transferEnabled);\r\n        require(!balanceLocked[msg.sender] );\r\n        \r\n        return super.transfer(_to, _value);\r\n    }    \r\n  \r\n    function lock ( address[] _addr ) onlyOwner external  {\r\n        for (uint i = 0; i \u003c _addr.length; i++) {\r\n          balanceLocked[_addr[i]] =  true;  \r\n        }\r\n    }\r\n    \r\n   \r\n    function unlock ( address[] _addr ) onlyOwner external  {\r\n        for (uint i = 0; i \u003c _addr.length; i++) {\r\n          balanceLocked[_addr[i]] =  false;  \r\n        }\r\n    }\r\n \r\n        \r\n}"}}