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pragma solidity ^0.4.13; contract owned { address public owner;
function owned() {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner {
owner = newOwner;
}
}
contract tokenRecipient { function receiveApproval(address from, uint256 value, address token, bytes extraData); }
contract token { 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 Burn(address indexed from, uint256 value);
function token(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) {
balanceOf[msg.sender] = initialSupply;
totalSupply = initialSupply;
name = tokenName;
symbol = tokenSymbol;
decimals = decimalUnits;
}
function _transfer(address _from, address _to, uint _value) internal {
require (_to != 0x0);
require (balanceOf[_from] > _value);
require (balanceOf[_to] + _value > balanceOf[_to]);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) {
_transfer(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) 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)
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
function burn(uint256 _value) 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) 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 INTToken is owned, token {
uint256 public sellPrice;
uint256 public buyPrice;
mapping (address => bool) public frozenAccount;
event FrozenFunds(address target, bool frozen);
function INTToken(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) token (initialSupply, tokenName, decimalUnits, tokenSymbol) {}
function _transfer(address _from, address _to, uint _value) internal {
require (_to != 0x0);
require (balanceOf[_from] > _value);
require (balanceOf[_to] + _value > balanceOf[_to]);
require(!frozenAccount[_from]);
require(!frozenAccount[_to]);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
}
function mintToken(address target, uint256 mintedAmount) onlyOwner {
balanceOf[target] += mintedAmount;
totalSupply += mintedAmount;
Transfer(0, this, mintedAmount);
Transfer(this, target, mintedAmount);
}
function freezeAccount(address target, bool freeze) onlyOwner {
frozenAccount[target] = freeze;
FrozenFunds(target, freeze);
}
function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
}
function buy() payable {
uint amount = msg.value / buyPrice;
_transfer(this, msg.sender, amount);
}
function sell(uint256 amount) {
require(this.balance >= amount * sellPrice);
_transfer(msg.sender, this, amount);
msg.sender.transfer(amount * sellPrice);
}
}
contract INT is INTToken(1000000000000000, "Internet Node Token", 6, "INT") {} |