Token

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library SafeMath    - function mul(uint256 a, uint256 b)    - function div(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b)    - function add(uint256 a, uint256 b)    - function max64(uint64 a, uint64 b)    - function min64(uint64 a, uint64 b)    - function max256(uint256 a, uint256 b)    - function min256(uint256 a, uint256 b)  contract Ownable    - function Ownable()    - function transferOwnership(address ne ...  contract Haltable is Ownable    - function halt()    - function unhalt()  contract ERC20    - function balanceOf(address _owner)    - function transfer(address _to, uint _ ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...  contract StandardToken is ERC20    - function balanceOf(address _owner)    - function transfer(address _to, uint _ ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...  contract LiveStarsToken is Standar ... *    - function LiveStarsToken()  contract LiveStarsTokenPresale is ... *    - function LiveStarsTokenPresale(    - function ()    - function withdraw()    - function finalWithdraw()    - function doPurchase(address _owner)

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/**
 *Submitted for verification at Etherscan.io on 2018-02-21
*/

pragma solidity ^0.4.13;

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

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

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

    function max64(uint64 a, uint64 b) internal constant returns (uint64) {
        return a >= b ? a : b;
    }

    function min64(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 min256(uint256 a, uint256 b) internal constant returns (uint256) {
        return a < b ? a : b;
    }
}

/**
 * @title Ownable
 * Base contract with an owner.
 * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
 */
contract Ownable {
    address public owner;

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

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

    function transferOwnership(address newOwner) onlyOwner {
        if (newOwner != address(0)) {
            owner = newOwner;
        }
    }
}

/**
 * @title Haltable
 * Abstract contract that allows children to implement an
 * emergency stop mechanism. Differs from Pausable by causing a throw when in halt mode.
 */
contract Haltable is Ownable {
    bool public halted;

    modifier stopInEmergency {
        require(!halted);
        _;
    }

    modifier onlyInEmergency {
        require(halted);
        _;
    }

    // called by the owner on emergency, triggers stopped state
    function halt() external onlyOwner {
        halted = true;
    }

    // called by the owner on end of emergency, returns to normal state
    function unhalt() external onlyOwner onlyInEmergency {
        halted = false;
    }
}

/**
 * @title ERC20
 * ERC20 interface
 */
contract ERC20 {
    uint256 public totalSupply;

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

/**
 * @title StandardToken
 * Standard ERC20-compliant token
 * https://github.com/ethereum/EIPs/issues/20
 */
contract StandardToken is ERC20 {
    using SafeMath for uint256;

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

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

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

    function transfer(address _to, uint _value) onlyPayloadSize(2 * 32) {
        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);
        Transfer(msg.sender, _to, _value);
    }

    function transferFrom(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) {
        var _allowance = allowed[_from][msg.sender];

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

    function approve(address _spender, uint _value) {
        /**
         * Allowed amount should be first set to 0
         * by calling approve(_spender, 0) in order to avoid this:
         * 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);
    }

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

contract LiveStarsToken is StandardToken {
    string public name = "Live Stars Token";
    string public symbol = "LIVE";
    uint256 public decimals = 18;
    uint256 public INITIAL_SUPPLY = 200000000 * 1 ether;

    /**
     * All tokens are allocated to creator.
     */
    function LiveStarsToken() {
        totalSupply = INITIAL_SUPPLY;
        balances[msg.sender] = INITIAL_SUPPLY;
    }
}

contract LiveStarsTokenPresale is Haltable {
    using SafeMath for uint;

    string public name = "Live Stars Token Presale";

    LiveStarsToken public token;
    address public beneficiary;

    uint public hardCap;
    uint public collected;
    uint public price;
    uint public purchaseLimit;

    uint public currentBalance;

    uint public tokensSold = 0;
    uint public investorCount = 0;

    uint public startTime;
    uint public endTime;

    event GoalReached(uint amountRaised);
    event NewContribution(address indexed holder, uint256 tokenAmount, uint256 etherAmount);

    modifier onlyAfter(uint time) {
        require(now >= time);
        _;
    }

    modifier onlyBefore(uint time) {
        require(now <= time);
        _;
    }

    function LiveStarsTokenPresale(
        uint _hardCapUSD,
        address _token,
        address _beneficiary,
        uint _totalTokens,
        uint _priceETH,
        uint _purchaseLimitUSD,

        uint _startTime,
        uint _duration
    ) {
        hardCap = _hardCapUSD  * 1 ether / _priceETH;
        price = _totalTokens * 1 ether / hardCap;

        purchaseLimit = _purchaseLimitUSD * 1 ether / _priceETH * price;
        token = LiveStarsToken(_token);
        beneficiary = _beneficiary;

        startTime = _startTime;
        endTime = _startTime + _duration * 1 hours;
    }

    function () payable stopInEmergency{
        require(msg.value >= 0.01 * 1 ether);
        doPurchase(msg.sender);
    }

    function withdraw() onlyOwner {
        require(beneficiary.send(currentBalance));
        currentBalance = 0;
    }

    function finalWithdraw() onlyOwner onlyAfter(endTime) {
        if (currentBalance > 0) {
            require(beneficiary.send(currentBalance));
        }

        token.transfer(beneficiary, token.balanceOf(this));
    }

    function doPurchase(address _owner) private onlyAfter(startTime) onlyBefore(endTime) {
        assert(collected.add(msg.value) <= hardCap);

        uint tokens = msg.value * price;
        assert(token.balanceOf(msg.sender) + tokens <= purchaseLimit);

        if (token.balanceOf(msg.sender) == 0) investorCount++;

        collected = collected.add(msg.value);
        currentBalance = currentBalance.add(msg.value);
        token.transfer(msg.sender, tokens);
        tokensSold = tokensSold.add(tokens);

        NewContribution(_owner, tokens, msg.value);

        if (collected == hardCap) {
            GoalReached(hardCap);
        }
    }
}

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