pragma solidity ^0.4.16;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
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 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 Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @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) 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 Implementation of the basic standard 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 ERC20, BasicToken {
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 uint256 the amout of tokens to be transfered
*/
function transferFrom(address _from, address _to, uint256 _value) 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
// require (_value <= _allowance);
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 behalf 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 that 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 uint256 specifing the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @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() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
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) onlyOwner {
require(newOwner != address(0));
owner = newOwner;
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is StandardToken {
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint _value) public {
require(_value > 0);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
Burn(burner, _value);
}
event Burn(address indexed burner, uint indexed value);
}
contract Misscoin is BurnableToken {
string public constant name = "Misscoin";
string public constant symbol = "MISC";
uint32 public constant decimals = 18;
uint256 public INITIAL_SUPPLY = 1000000000 * 1 ether;
function Misscoin() {
totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
balances[0x49B25aDDdd6503d275375C7c261A444862360396]=150000000 * 1 ether;
}
}
contract Crowdsale is Ownable {
using SafeMath for uint;
address multisig;
address restricted;
bool addtok=false;
Misscoin public token = new Misscoin();
uint start;
uint period;
uint128 constant WAD = 10 ** 18;
mapping (uint => mapping (address => uint)) public userBuys;
mapping (uint => uint) public dailyTotals;
mapping (uint => mapping (address => bool)) public claimed;
function Crowdsale() {
multisig = 0x49B25aDDdd6503d275375C7c261A444862360396;
restricted = 0x49B25aDDdd6503d275375C7c261A444862360396;
start = 1512741600;
period = 150;
}
modifier saleIsOn() {
require(now > start && now < start + period * 1 days);
_;
}
function wmul(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * y + WAD / 2) / WAD);
}
function wdiv(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * WAD + y / 2) / y);
}
function sub(uint256 a, uint256 b) internal constant returns (uint256) {
assert(b <= a);
return a - b;
}
function cast(uint256 x) constant internal returns (uint128 z) {
assert((z = uint128(x)) == x);
}
function time() constant returns (uint) {
return block.timestamp;
}
function today() constant returns (uint) {
return dayFor(time());
}
function dayFor(uint timestamp) constant returns (uint) {
return timestamp < start
? 0
: sub(timestamp, start) / 24 hours + 1;
}
function buyWithLimit(uint day, uint limit) payable saleIsOn {
assert(time() >= start && today() <= period);
assert(msg.value >= 0.001 ether);
assert(day >= today());
assert(day <= period);
userBuys[day][msg.sender] += msg.value;
dailyTotals[day] += msg.value;
if (limit != 0) {
assert(dailyTotals[day] <= limit);
}
}
function addtokens() onlyOwner{
assert(today() >= 149 && !addtok);
token.transfer(0x49B25aDDdd6503d275375C7c261A444862360396, 100000000 * 1 ether);
addtok=true;
}
function buy() payable {
buyWithLimit(today(), 0);
}
function () payable {
buy();
}
function claim(uint day) saleIsOn {
assert(today() > day);
if (claimed[day][msg.sender] || dailyTotals[day] == 0) {
return;
}
var dailyTotal = cast(dailyTotals[day]);
var userTotal = cast(userBuys[day][msg.sender]);
var price = wdiv(cast(5000000), dailyTotal);
var reward = wmul(price, userTotal);
claimed[day][msg.sender] = true;
token.transfer(msg.sender, reward * 1 ether);
}
function claimAll() {
for (uint i = 0; i < today(); i++) {
claim(i);
}
}
function collect() onlyOwner{
assert(today() > 0); // Prevent recycling during window 0
multisig.transfer(this.balance);
}
}