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- pragma solidity ^0.4.11;
- contract IERC20 {
- function totalSupply() constant returns (uint256 totalSupply);
- function balanceOf(address _owner) constant returns (uint256 balance);
- function transfer(address _to, uint256 _value) returns (bool success);
- function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
- function approve(address _spender, uint256 _value) returns (bool success);
- function allowance(address _owner, address _spender) constant returns (uint256 remaining);
- event Transfer(address indexed _from, address indexed _to, uint256 _value);
- event Approval(address indexed _owner, address indexed _spender, uint256 _value);
- }
- 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 Panel is IERC20 {
- using SafeMath for uint256;
- string public symbol = 'PAN';
- string public name = 'Panel';
- uint8 public constant decimals = 18;
- uint256 public constant tokensPerEther = 1000;
- uint256 public _totalSupply = 9999999000000000000000000;
- uint256 public totalContribution = 0;
- uint256 public bonusSupply = 0;
- bool public purchasingAllowed = false;
- uint8 public currentSaleDay = 1;
- uint8 public currentBonus = 100;
- string public startDate = '2017-09-16 18:00';
- address public owner;
- modifier onlyOwner {
- require(msg.sender == owner);
- _;
- }
- mapping(address => uint256) balances;
- mapping (address => mapping (address => uint256)) public allowed;
- function Panel() {
- owner = msg.sender;
- balances[msg.sender] = _totalSupply;
- }
- function changeStartDate(string _startDate){
- require(
- msg.sender==owner
- );
- startDate = _startDate;
- }
- function totalSupply() constant returns (uint256 totalSupply) {
- return _totalSupply;
- }
- function getStats() constant returns (uint256, uint256, uint256, bool, uint256, uint256, string) {
- return (totalContribution, _totalSupply, bonusSupply, purchasingAllowed, currentSaleDay, currentBonus, startDate);
- }
- function transferOwnership(address _newOwner) onlyOwner {
- owner = _newOwner;
- }
- function rebrand(string _symbol, string _name) onlyOwner {
- symbol = _symbol;
- name = _name;
- }
- function withdraw() onlyOwner {
- owner.transfer(this.balance);
- }
- /*
- * create payable token. Now you can purchase it
- *
- */
- function () payable {
- require(
- msg.value > 0
- && purchasingAllowed
- );
- /* everything is in wei */
- uint256 baseTokens = msg.value.mul(tokensPerEther);
- uint256 bonusTokens = msg.value.mul(currentBonus);
- /* send tokens to buyer. Buyer gets baseTokens + bonusTokens */
- balances[msg.sender] = balances[msg.sender].add(baseTokens).add(bonusTokens);
- /* send eth to owner */
- owner.transfer(msg.value);
- bonusSupply = bonusSupply.add(bonusTokens);
- totalContribution = totalContribution.add(msg.value);
- _totalSupply = _totalSupply.add(baseTokens).add(bonusTokens);
- Transfer(address(this), msg.sender, baseTokens.add(bonusTokens));
- }
- function enablePurchasing() onlyOwner {
- purchasingAllowed = true;
- }
- function disablePurchasing() onlyOwner {
- purchasingAllowed = false;
- }
- function setCurrentSaleDayAndBonus(uint8 _day) onlyOwner {
- require(
- (_day > 0 && _day < 11)
- );
- currentBonus = 10;
- currentSaleDay = _day;
- if(_day==1) {
- currentBonus = 100;
- }
- if(_day==2) {
- currentBonus = 75;
- }
- if(_day>=3 && _day<5) {
- currentBonus = 50;
- }
- if(_day>=5 && _day<8) {
- currentBonus = 25;
- }
- }
- function balanceOf(address _owner) constant returns (uint256 balance) {
- return balances[_owner];
- }
- function transfer(address _to, uint256 _value) returns (bool success) {
- require(
- (balances[msg.sender] >= _value)
- && (_value > 0)
- && (_to != address(0))
- && (balances[_to].add(_value) >= balances[_to])
- && (msg.data.length >= (2 * 32) + 4)
- );
- balances[msg.sender] = balances[msg.sender].sub(_value);
- balances[_to] = balances[_to].add(_value);
- Transfer(msg.sender, _to, _value);
- return true;
- }
- function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
- require(
- (allowed[_from][msg.sender] >= _value) // Check allowance
- && (balances[_from] >= _value) // Check if the sender has enough
- && (_value > 0) // Don't allow 0value transfer
- && (_to != address(0)) // Prevent transfer to 0x0 address
- && (balances[_to].add(_value) >= balances[_to]) // Check for overflows
- && (msg.data.length >= (2 * 32) + 4) //mitigates the ERC20 short address attack
- //most of these things are not necesary
- );
- balances[_from] = balances[_from].sub(_value);
- balances[_to] = balances[_to].add(_value);
- allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
- Transfer(_from, _to, _value);
- return true;
- }
- function approve(address _spender, uint256 _value) returns (bool success) {
- require(
- (_value == 0)
- || (allowed[msg.sender][_spender] == 0)
- );
- allowed[msg.sender][_spender] = _value;
- Approval(msg.sender, _spender, _value);
- return true;
- }
- function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
- return allowed[_owner][_spender];
- }
- event Transfer(address indexed _from, address indexed _to, uint256 _value);
- event Approval(address indexed _owner, address indexed _spender, uint256 _value);
- }
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