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code
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code
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pragma solidity ^0.4.23;
contract BaseToken {
string public name;
string public symbol;
uint8 public decimals;
uint256 public totalSupply;
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function _transfer(address _from, address _to, uint _value) internal {
require(_to != 0x0);
require(balanceOf[_from] >= _value);
require(balanceOf[_to] + _value > balanceOf[_to]);
uint previousBalances = balanceOf[_from] + balanceOf[_to];
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]);
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
}
contract BurnToken is BaseToken {
event Burn(address indexed from, uint256 value);
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value);
balanceOf[msg.sender] -= _value;
totalSupply -= _value;
Burn(msg.sender, _value);
return true;
}
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value);
require(_value <= allowance[_from][msg.sender]);
balanceOf[_from] -= _value;
allowance[_from][msg.sender] -= _value;
totalSupply -= _value;
Burn(_from, _value);
return true;
}
}
contract ICOToken is BaseToken {
// 1 ether = icoRatio token
uint256 public icoRatio;
uint256 public icoEndtime;
address public icoSender;
address public icoHolder;
event ICO(address indexed from, uint256 indexed value, uint256 tokenValue);
event Withdraw(address indexed from, address indexed holder, uint256 value);
modifier onlyBefore() {
if (now > icoEndtime) {
revert();
}
_;
}
function() public payable onlyBefore {
uint256 tokenValue = (msg.value * icoRatio * 10 ** uint256(decimals)) / (1 ether / 1 wei);
if (tokenValue == 0 || balanceOf[icoSender] < tokenValue) {
revert();
}
_transfer(icoSender, msg.sender, tokenValue);
ICO(msg.sender, msg.value, tokenValue);
}
function withdraw() {
uint256 balance = this.balance;
icoHolder.transfer(balance);
Withdraw(msg.sender, icoHolder, balance);
}
}
contract CustomToken is BaseToken, BurnToken, ICOToken {
function CustomToken() public {
totalSupply = 10000000000000000000000000000;
balanceOf[0x8cd103c2164d04d071f4014ac7b3aa42d8fa596c] = totalSupply;
name = 'PKG Token';
symbol = 'PKG';
decimals = 18;
icoRatio = 100000;
icoEndtime = 1601460000;
icoSender = 0x8cd103c2164d04d071f4014ac7b3aa42d8fa596c;
icoHolder = 0x8cd103c2164d04d071f4014ac7b3aa42d8fa596c;
}
}