Contract Source Code:
File 1 of 1 : OIOToken
pragma solidity ^0.4.18;
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure 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 pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
contract ERC20Implementation is ERC20, BurnableToken, Ownable {
mapping (address => mapping (address => uint256)) internal allowed;
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract BasicFreezableToken is ERC20Implementation {
address[] internal investors;
mapping (address => bool) internal isInvestor;
bool frozen;
function transfer(address _to, uint256 _value) public returns (bool) {
require(!frozen);
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
}
contract ERC20FreezableImplementation is BasicFreezableToken {
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(!frozen);
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool) {
require(!frozen);
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
require(!frozen);
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
require(!frozen);
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function freeze() onlyOwner public {
frozen = true;
}
function unFreeze() onlyOwner public {
frozen = false;
}
}
contract OIOToken is ERC20FreezableImplementation {
string public name;
string public symbol;
uint8 public decimals;
constructor(address[] _investors, uint256[] _tokenAmount, uint256 _totalSupply, string _name, string _symbol, uint8 _decimals) public {
require(_investors.length == _tokenAmount.length);
name = _name;
symbol = _symbol;
decimals = _decimals;
uint256 dif = 0;
totalSupply_ = _totalSupply;
for (uint i=0; i<_investors.length; i++) {
balances[_investors[i]] = balances[_investors[i]].add(_tokenAmount[i]);
isInvestor[_investors[i]] = true;
investors.push(_investors[i]);
dif = dif.add(_tokenAmount[i]);
}
balances[msg.sender] = totalSupply_.sub(dif);
isInvestor[msg.sender] = true;
investors.push(msg.sender);
frozen = false;
}
function transferBack(address _from, uint256 _tokenAmount) onlyOwner public {
require(_from != address(0));
require(_tokenAmount <= balances[_from]);
balances[_from] = balances[_from].sub(_tokenAmount);
balances[msg.sender] = balances[msg.sender].add(_tokenAmount);
emit Transfer(_from, msg.sender, _tokenAmount);
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(!frozen);
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
if (!isInvestor[_to]) {
isInvestor[_to] = true;
investors.push(_to);
}
emit Transfer(_from, _to, _value);
return true;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(!frozen);
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
if (!isInvestor[_to]) {
isInvestor[_to] = true;
investors.push(_to);
}
emit Transfer(msg.sender, _to, _value);
return true;
}
function transferBulk(address[] _toAccounts, uint256[] _tokenAmount) onlyOwner public {
require(_toAccounts.length == _tokenAmount.length);
for(uint i=0; i<_toAccounts.length; i++) {
balances[msg.sender] = balances[msg.sender].sub(_tokenAmount[i]);
balances[_toAccounts[i]] = balances[_toAccounts[i]].add(_tokenAmount[i]);
if(!isInvestor[_toAccounts[i]]){
isInvestor[_toAccounts[i]] = true;
investors.push(_toAccounts[i]);
}
}
}
function getInvestorsAndTheirBalances() public view returns (address[], uint[]) {
uint[] memory tempBalances = new uint[](investors.length);
for(uint i=0; i<investors.length; i++) {
tempBalances[i] = balances[investors[i]];
}
return (investors, tempBalances);
}
}