// Vulnerability label: clean
pragma solidity ^0.4.18;
/**
*   Crowdsale contracts edited from original contract code at https://www.ethereum.org/crowdsale#crowdfund-your-idea
*   Additional crowdsale contracts, functions, libraries from OpenZeppelin
*       at https://github.com/OpenZeppelin/zeppelin-solidity/tree/master/contracts/token
*   Token contract edited from original contract code at https://www.ethereum.org/token
*   ERC20 interface and certain token functions adapted from https://github.com/ConsenSys/Tokens
**/
contract ERC20 {

    event Approval(address indexed _owner, address indexed _spender, uint _value);
    event Transfer(address indexed _from, address indexed _to, uint _value);
    function allowance(address _owner, address _spender) public constant returns (uint remaining);
    function approve(address _spender, uint _value) public returns (bool success);
    function balanceOf(address _owner) public constant returns (uint balance);
    function transfer(address _to, uint _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint _value) returns (bool success);
}

contract Owned {

    address public owner;

    function Owned() {
        owner = msg.sender;
    }

    modifier onlyOwner {
        require(msg.sender == owner);
        _;
    }

    function transferOwnership(address newOwner) onlyOwner {
        owner = newOwner;
    }
}
library SafeMath {
    function add(uint256 a, uint256 b) internal returns (uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
    function div(uint256 a, uint256 b) internal returns (uint256) {
        uint256 c = a / b;
        return c;
    }
    function max64(uint64 a, uint64 b) internal constant returns (uint64) {
        return a >= b ? a : b;
    }
    function max256(uint256 a, uint256 b) internal constant returns (uint256) {
        return a >= b ? a : b;
    }
    function min64(uint64 a, uint64 b) internal constant returns (uint64) {
        return a < b ? a : b;
    }
    function min256(uint256 a, uint256 b) internal constant returns (uint256) {
        return a < b ? a : b;
    }
    function mul(uint256 a, uint256 b) internal returns (uint256) {
        uint256 c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }
    function sub(uint256 a, uint256 b) internal returns (uint256) {
        assert(b <= a);
        return a - b;
    }
}
contract Scrinium is ERC20, Owned {

    using SafeMath for uint256;

    string public name = "Scrinium";
    string public symbol = "SCR";
    uint256 public decimals = 8;
    uint256 multiplier = 100000000;

    uint256 public totalSupply;
    uint256 public hardcap = 180000000;

    uint256 public constant startTime = 1514678400;//5.12.2017
    uint256 public constant stopTime = 1521590400; //21.03.2018

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

    function Scrinium() {
        hardcap = 180000000;
        hardcap = hardcap.mul(multiplier);
    }

    modifier onlyPayloadSize(uint size) {
        if(msg.data.length < size + 4) revert();
        _;
    }

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
      return allowed[_owner][_spender];
    }

    function approve(address _spender, uint256 _value) returns (bool success) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function balanceOf(address _owner) constant returns (uint256 remainingBalance) {
        return balance[_owner];
    }

    function mintToken(address target, uint256 mintedAmount) onlyOwner returns (bool success) {
        require(mintedAmount > 0
            && (now < stopTime)
            && (totalSupply.add(mintedAmount) <= hardcap));

        uint256 addTokens = mintedAmount;
        balance[target] += addTokens;
        totalSupply += addTokens;
        Transfer(0, target, addTokens);
        return true;
    }

    function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) returns (bool success) {
        if ((balance[msg.sender] >= _value) && (balance[_to] + _value > balance[_to])) {
            balance[msg.sender] -= _value;
            balance[_to] += _value;
            Transfer(msg.sender, _to, _value);
            return true;
        } else {
            return false;
        }
    }

    function transferFrom(address _from, address _to, uint256 _value) onlyPayloadSize(3 * 32) returns (bool success) {
        if ((balance[_from] >= _value) && (allowed[_from][msg.sender] >= _value) && (balance[_to] + _value > balance[_to])) {
            balance[_to] += _value;
            balance[_from] -= _value;
            allowed[_from][msg.sender] -= _value;
            Transfer(_from, _to, _value);
            return true;
        } else {
            return false;
        }
    }
}