Contract Source Code:
File 1 of 1 : Crowdsale
pragma solidity ^0.4.15;
contract Base {
modifier only(address allowed) {
require(msg.sender == allowed);
_;
}
// *************************************************
// * reentrancy handling *
// *************************************************
uint constant internal L00 = 2 ** 0;
uint constant internal L01 = 2 ** 1;
uint constant internal L02 = 2 ** 2;
uint constant internal L03 = 2 ** 3;
uint constant internal L04 = 2 ** 4;
uint constant internal L05 = 2 ** 5;
uint private bitlocks = 0;
modifier noAnyReentrancy {
var _locks = bitlocks;
require(_locks == 0);
bitlocks = uint(-1);
_;
bitlocks = _locks;
}
}
contract IToken {
function mint(address _to, uint _amount);
function start();
function getTotalSupply() returns(uint);
function balanceOf(address _owner) returns(uint);
function transfer(address _to, uint _amount) returns (bool success);
function transferFrom(address _from, address _to, uint _value) returns (bool success);
function burn(uint256 _amount, address _address) returns (bool success);
}
/**
* @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;
}
}
contract Owned is Base {
address public owner;
address newOwner;
function Owned() {
owner = msg.sender;
}
function transferOwnership(address _newOwner) only(owner) {
newOwner = _newOwner;
}
function acceptOwnership() only(newOwner) {
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
event OwnershipTransferred(address indexed _from, address indexed _to);
}
contract Crowdsale is Owned {
using SafeMath for uint;
enum State { INIT, PRESALE, PREICO, PREICO_FINISHED, ICO_FIRST, ICO_SECOND, ICO_THIRD, STOPPED, CLOSED, EMERGENCY_STOP}
uint public constant MAX_SALE_SUPPLY = 24 * (10**25);
uint public constant DECIMALS = (10**18);
State public currentState = State.INIT;
IToken public token;
uint public totalSaleSupply = 0;
uint public totalFunds = 0;
uint public tokenPrice = 1000000000000000000; //wei
uint public bonus = 50000; //50%
uint public currentPrice;
address public beneficiary;
mapping(address => uint) balances;
address public foundersWallet; //replace
uint public foundersAmount = 160000000 * DECIMALS;
uint public maxPreICOSupply = 48 * (10**24);
uint public maxICOFirstSupply = 84 * (10**24);
uint public maxICOSecondSupply = 48 * (10**24);
uint public maxICOThirdSupply = 24 * (10**24);
uint public currentRoundSupply = 0;
uint private bonusBase = 100000; //100%;
modifier inState(State _state){
require(currentState == _state);
_;
}
modifier salesRunning(){
require(currentState == State.PREICO
|| currentState == State.ICO_FIRST
|| currentState == State.ICO_SECOND
|| currentState == State.ICO_THIRD);
_;
}
modifier minAmount(){
require(msg.value >= 0.2 ether);
_;
}
event Transfer(address indexed _to, uint _value);
function Crowdsale(address _foundersWallet, address _beneficiary){
beneficiary = _beneficiary;
foundersWallet = _foundersWallet;
}
function initialize(IToken _token)
public
only(owner)
inState(State.INIT)
{
require(_token != address(0));
token = _token;
currentPrice = tokenPrice;
_mint(foundersWallet, foundersAmount);
}
function setBonus(uint _bonus) public
only(owner)
{
bonus = _bonus;
}
function setPrice(uint _tokenPrice)
public
only(owner)
{
currentPrice = _tokenPrice;
}
function setState(State _newState)
public
only(owner)
{
require(
currentState == State.INIT && _newState == State.PRESALE
|| currentState == State.PRESALE && _newState == State.PREICO
|| currentState == State.PREICO && _newState == State.PREICO_FINISHED
|| currentState == State.PREICO_FINISHED && _newState == State.ICO_FIRST
|| currentState == State.ICO_FIRST && _newState == State.STOPPED
|| currentState == State.STOPPED && _newState == State.ICO_SECOND
|| currentState == State.ICO_SECOND && _newState == State.STOPPED
|| currentState == State.STOPPED && _newState == State.ICO_THIRD
|| currentState == State.ICO_THIRD && _newState == State.CLOSED
|| _newState == State.EMERGENCY_STOP
);
currentState = _newState;
if(_newState == State.PREICO
|| _newState == State.ICO_FIRST
|| _newState == State.ICO_SECOND
|| _newState == State.ICO_THIRD){
currentRoundSupply = 0;
}
if(_newState == State.CLOSED){
_finish();
}
}
function setStateWithBonus(State _newState, uint _bonus)
public
only(owner)
{
require(
currentState == State.INIT && _newState == State.PRESALE
|| currentState == State.PRESALE && _newState == State.PREICO
|| currentState == State.PREICO && _newState == State.PREICO_FINISHED
|| currentState == State.PREICO_FINISHED && _newState == State.ICO_FIRST
|| currentState == State.ICO_FIRST && _newState == State.STOPPED
|| currentState == State.STOPPED && _newState == State.ICO_SECOND
|| currentState == State.ICO_SECOND && _newState == State.STOPPED
|| currentState == State.STOPPED && _newState == State.ICO_THIRD
|| currentState == State.ICO_THIRD && _newState == State.CLOSED
|| _newState == State.EMERGENCY_STOP
);
currentState = _newState;
bonus = _bonus;
if(_newState == State.CLOSED){
_finish();
}
}
function mintPresale(address _to, uint _amount)
public
only(owner)
inState(State.PRESALE)
{
require(totalSaleSupply.add(_amount) <= MAX_SALE_SUPPLY);
totalSaleSupply = totalSaleSupply.add(_amount);
_mint(_to, _amount);
}
function ()
public
payable
salesRunning
minAmount
{
_receiveFunds();
}
//==================== Internal Methods =================
function _receiveFunds()
internal
{
require(msg.value != 0);
uint transferTokens = msg.value.mul(DECIMALS).div(currentPrice);
require(totalSaleSupply.add(transferTokens) <= MAX_SALE_SUPPLY);
uint bonusTokens = transferTokens.mul(bonus).div(bonusBase);
transferTokens = transferTokens.add(bonusTokens);
_checkMaxRoundSupply(transferTokens);
totalSaleSupply = totalSaleSupply.add(transferTokens);
balances[msg.sender] = balances[msg.sender].add(msg.value);
totalFunds = totalFunds.add(msg.value);
_mint(msg.sender, transferTokens);
beneficiary.transfer(msg.value);
Transfer(msg.sender, transferTokens);
}
function _mint(address _to, uint _amount)
noAnyReentrancy
internal
{
token.mint(_to, _amount);
}
function _checkMaxRoundSupply(uint _amountTokens)
internal
{
if (currentState == State.PREICO) {
require(currentRoundSupply.add(_amountTokens) <= maxPreICOSupply);
} else if (currentState == State.ICO_FIRST) {
require(currentRoundSupply.add(_amountTokens) <= maxICOFirstSupply);
} else if (currentState == State.ICO_SECOND) {
require(currentRoundSupply.add(_amountTokens) <= maxICOSecondSupply);
} else if (currentState == State.ICO_THIRD) {
require(currentRoundSupply.add(_amountTokens) <= maxICOThirdSupply);
}
}
function burn(uint256 _amount, address _address) only(owner) {
require(token.burn(_amount, _address));
totalSaleSupply = totalSaleSupply.sub(_amount);
}
function _finish()
noAnyReentrancy
internal
{
token.start();
}
}