Smart Contract written in Remix with Solidity version 0.4.11

gistfile1.txt

pragma solidity ^0.4.11;

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control 
 * functions, this simplifies the implementation of "user permissions". 
 */
contract Ownable {
  address public owner;

  /** 
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() private {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner. 
   */
  modifier onlyOwner() private {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to. 
   */
  function transferOwnership(address newOwner) private onlyOwner {
    require(newOwner != address(0));
    owner = newOwner;
  }
}

/**
 * @title Authorizable
 * @dev Allows to authorize access to certain function calls
 * 
 * ABI
 * [{"constant":true,"inputs":[{"name":"authorizerIndex","type":"uint256"}],"name":"getAuthorizer","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_addr","type":"address"}],"name":"addAuthorized","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_addr","type":"address"}],"name":"isAuthorized","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"inputs":[],"payable":false,"type":"constructor"}]
 */
contract Authorizable {

  address[] authorizers;
  mapping(address => uint256) authorizerIndex;

  /**
   * @dev Throws if called by any account that is not authorized. 
   */
  modifier onlyAuthorized {
    require(isAuthorized(msg.sender));
    _;
  }

  /**
   * @dev Contructor that authorizes the msg.sender. 
   */
  function Authorizable() {
    authorizers.length = 2;
    authorizers[1] = msg.sender;
    authorizerIndex[msg.sender] = 1;
  }

  /**
   * @dev Function to get a specific authorizer
   * @param authIndex index of the authorizer to be retrieved.
   * @return The address of the authorizer.
   */
  function getAuthorizer(uint256 authIndex) external constant returns(address) {
    return address(authorizers[authIndex + 1]);
  }

  /**
   * @dev Function to check if an address is authorized
   * @param _addr the address to check if it is authorized.
   * @return boolean flag if address is authorized.
   */
  function isAuthorized(address _addr) constant returns(bool) {
    return authorizerIndex[_addr] > 0;
  }

  /**
   * @dev Function to add a new authorizer
   * @param _addr the address to add as a new authorizer.
   */
  function addAuthorized(address _addr) external onlyAuthorized {
    authorizerIndex[_addr] = authorizers.length;
    authorizers.length++;
    authorizers[authorizers.length - 1] = _addr;
  }
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal constant returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) constant returns (uint256);
  function transfer(address to, uint256 value) returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint256);
  function transferFrom(address from, address to, uint256 value) returns (bool);
  function approve(address spender, uint256 value) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint;

  mapping(address => uint256) balances;

  /**
   * @dev Fix for the ERC20 short address attack.
   */
  modifier onlyPayloadSize(uint256 size) {
     require(msg.data.length >= size + 4);
     _;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) returns (bool) {
    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.
  * @param _owner The address to query the the balance of. 
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) constant returns (uint256 balance) {
    return balances[_owner];
  }
}

/**
 * @title Standard ERC20 token
 *
 * @dev Implemantation of the basic standart token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is BasicToken, ERC20 {

  mapping (address => mapping (address => uint256)) allowed;

  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint the amout of tokens to be transfered
   */
  function transferFrom(address _from, address _to, uint256 _value) onlyPayloadSize(3 * 32) returns (bool) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // if (_value > _allowance) throw;

    balances[_to] = balances[_to].add(_value);
    balances[_from] = balances[_from].sub(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Aprove the passed address to spend the specified amount of tokens on beahlf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) returns (bool) {

    // To change the approve amount you first have to reduce the addresses`
    //  allowance to zero by calling `approve(_spender, 0)` if it is not
    //  already 0 to mitigate the race condition described here:
    //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    require((_value == 0) || (allowed[msg.sender][_spender] == 0));
    
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens than an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint specifing the amount of tokens still avaible for the spender.
   */
  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }
}

/**
 * @title Mintable token
 * @dev Simple ERC20 Token example, with mintable token creation
 * @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
 */

contract MintableToken is StandardToken, Ownable {
  event Mint(address indexed to, uint256 value);
  event MintFinished();

  bool public mintingFinished = false;

  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  /**
   * @dev Function to mint tokens
   * @param _to The address that will recieve the minted tokens.
   * @param _amount The amount of tokens to mint.
   * @return A boolean that indicates if the operation was successful.
   */
  function mint(address _to, uint256 _amount) onlyOwner canMint returns (bool) {
    totalSupply = totalSupply.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    Mint(_to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() onlyOwner returns (bool) {
    mintingFinished = true;
    MintFinished();
    return true;
  }
}

/**
 * @title Test Token Contract
 * @dev The main Test Token Contract
 * 
 * ABI 
 * [{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"tradingStarted","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_startStop","type":"bool"}],"name":"startTrading","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]
 */
contract TestToken is MintableToken {
  string public name = "Test Token";
  string public symbol = “TEST";
  uint public decimals = 18;

  bool public tradingStarted = false;

  /**
   * @dev modifier that throws if trading has not started yet
   */
  modifier hasStartedTrading() {
    require(tradingStarted);
    _;
  }

  /**
   * @dev Allows the owner to start/stop the trading.
   */
  function startTrading(bool _startStop) onlyOwner {
    tradingStarted = _startStop;
  }

  /**
   * @dev Allows anyone to transfer the tokens once trading has started
   * @param _to the recipient address of the tokens. 
   * @param _value number of tokens to be transfered. 
   */
  function transfer(address _to, uint256 _value) hasStartedTrading returns (bool) {
    super.transfer(_to, _value);
    return true;
  }

   /**
   * @dev Allows anyone to transfer the tokens once trading has started
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint the amout of tokens to be transfered
   */
  function transferFrom(address _from, address _to, uint256 _value) hasStartedTrading returns (bool) {
    super.transferFrom(_from, _to, _value);
    return true;
  }
}

/**
 * @title a Test Sale Contract
 * @dev The main Test Sale Contract
 * 
 * ABI
 * [{"constant":true,"inputs":[],"name":"ended","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rate","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"Vault","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"authIndex","type":"uint256"}],"name":"getAuthorizer","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"weiRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"recipient","type":"address"},{"name":"tokens","type":"uint256"}],"name":"authorizedCreateTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_startStop","type":"bool"}],"name":"startTrading","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"keys","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_Vault","type":"address"}],"name":"setVault","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_rate","type":"uint256"}],"name":"changeRate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"minPay","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"selfDestruct","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"}],"name":"retrieveTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_minPay","type":"uint256"}],"name":"changeMinPay","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"start","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"recipient","type":"address"}],"name":"createTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"_addr","type":"address"}],"name":"addAuthorized","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"collect","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"closeSale","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_ended","type":"bool"}],"name":"setEnd","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"key","type":"string"}],"name":"register","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_start","type":"uint256"}],"name":"setStart","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_addr","type":"address"}],"name":"isAuthorized","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"recipient","type":"address"},{"indexed":false,"name":"wei_amount","type":"uint256"},{"indexed":false,"name":"token_amount","type":"uint256"},{"indexed":false,"name":"rate","type":"uint256"}],"name":"LogBuy","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"recipient","type":"address"},{"indexed":false,"name":"pay_amount","type":"uint256"}],"name":"LogAuthCreate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"issuedSupply","type":"uint256"},{"indexed":false,"name":"restrictedTokens","type":"uint256"}],"name":"LogSaleClosed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"user","type":"address"},{"indexed":false,"name":"key","type":"string"}],"name":"LogRegister","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"amount","type":"uint256"}],"name":"LogCollect","type":"event"}]
 */
contract TestSale is Ownable, Authorizable {
  using SafeMath for uint256;
  event LogBuy(address recipient, uint256 wei_amount, uint256 token_amount, uint256 rate);
  event LogAuthCreate(address recipient, uint256 pay_amount);
  event LogSaleClosed(uint256 issuedSupply, uint256 restrictedTokens);
  event LogRegister(address user, string key);
  event LogCollect(uint256 amount);

  TestToken public token = new TestToken();

  //address public Vault = 0xca333333333333333aaaaaaaaaaaabbbbbbbbb; // remix wallet
  address public Vault = 0xca333333333333333aaaaaaaaaaaabbbbbbbbb; // MetaMask Ropsten Account 1

  // how many token units a buyer gets per ether
  uint256 public rate = 10000000000000000000000; // 10k tokens per ether

  uint public start = 1504900100; 
  bool public ended = false;
  // amount of raised money in wei
  uint256 public weiRaised = 0;
  uint256 public minPay = 10000000000000000; // 0.01 ether
  
  mapping (address => string) public keys;

  /**
   * @dev Allows anyone to create tokens by depositing ether.
   * @param recipient = address to receive tokens. 
   */
  function createTokens(address recipient) public payable {
    require(recipient != 0x0);
    require(validPurchase());
    uint256 tokens = rate.mul(msg.value).div(1 ether);
    require(token.mint(recipient, tokens));
    weiRaised = weiRaised.add(msg.value);
    LogBuy(recipient, msg.value, tokens, rate);
  }
  // @return true if the transaction can buy tokens
  function validPurchase() internal constant returns (bool) {
    bool minPurchase = msg.value >= minPay;
    return (now > start) && !ended && minPurchase;
  }
  /**
   * @dev Let owner collect ETH
   */
  function collect() onlyOwner returns (uint256) {
    LogCollect(this.balance);
    Vault.transfer(this.balance);
    return this.balance;
  }
  /**
   * @dev Allows the owner to set the starting time.
   * @param _start the new _start
   */
  function setStart(uint256 _start) public onlyOwner {
    start = _start;
  }
  /**
   * @dev Allows the owner to set the Vault address
   * @param _Vault the Vault address
   */
  function setVault(address _Vault) public onlyOwner {
    require(_Vault != 0x0);
    if (_Vault != address(0)) {
      Vault = _Vault;
    }
  }
  /**
   * @dev Allows the owner to set the rate.
   * @param _rate the exchangerate
   */
  function changeRate(uint256 _rate) public onlyOwner {
    require(_rate > 0);
    rate = _rate;
  }
  /**
   * @dev Allows the owner to close sale. This will create the 
   * restricted tokens.
   * Then ownership of token contract is transfered 
   * to owner of sale contract.
   */
  function closeSale() public onlyOwner returns (bool) {
    uint256 issuedTokenSupply = token.totalSupply();
    uint256 restrictedTokens = issuedTokenSupply.mul(42857).div(100000);
    require(token.mint(Vault, restrictedTokens));
    ended = true;
    token.finishMinting();
    token.transferOwnership(owner);
    LogSaleClosed(issuedTokenSupply, restrictedTokens);
    return true;
  }
  /**
   * @dev Fallback function which receives ether and created the appropriate number of tokens for the 
   * msg.sender.
   */
  function() external payable {
    createTokens(msg.sender);
  }
  /**
   * @dev Allows the owner to end the sale.
   * @param _ended - true or false
   */
  function setEnd(bool _ended) public onlyOwner returns (bool) {
    ended = _ended;
    return ended;
  }
  /**
   * @dev Allows the owner to change minimum payment.
   * @param _minPay = minimum payment
   */
  function changeMinPay(uint256 _minPay) onlyOwner returns (bool) {
      minPay = _minPay;
      return true;
  }
  /**
   * @dev Allows the owner start or stop trading
   * @param _startStop = true or false
   */
  function startTrading(bool _startStop) onlyOwner {
    token.startTrading(_startStop);
  }
  /**
   * @dev Allows the owner to destroy contract
   */
  function selfDestruct() onlyOwner returns (bool) {
      selfdestruct(Vault);
      return true;
  }
  /**
   * @dev For user to register their new public key to map holder's tokens to new blockchain tokens
   * Read full key import policy.  Manually registering requires a base58
   * encoded using the STEEM, BTS, or EOS public key format, for now.  Subject to change.
   * @param key = holder's public key
   */
  function register(string key) {
    assert(bytes(key).length <= 64);
    keys[msg.sender] = key;
    LogRegister(msg.sender, key);
  }
  /**
   * @dev Allows authorized access to create tokens. This is used to pay helpers.
   * @param recipient = address to receive tokens.
   * @param tokens = number of tokens to be created. 
   */
  function authorizedCreateTokens(address recipient, uint tokens) public onlyAuthorized {
    require(tokens > 10000000000000000000 && tokens <= 20000000000000000000000); // > 50 & <= 20000 tokens
    require(token.mint(recipient, tokens));
    LogAuthCreate(recipient, tokens);
  }
    /**
   * @dev Allows owner to transfer ERC20 tokens to vault
   * @param _token the contract address of the ERC20 contract
   */
  function retrieveTokens(address _token) public onlyOwner {
    ERC20 erctoken = ERC20(_token);
    erctoken.transfer(Vault, erctoken.balanceOf(this));
  }
}