Contract Source Code:
File 1 of 1 : ArawToken
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
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;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
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 a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// ----------------------------------------------------------------------------
// Ownership functionality for authorization controls and user permissions
// ----------------------------------------------------------------------------
/**
* @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;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
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) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
}
// ERC20 Standard Interface
// ----------------------------------------------------------------------------
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
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);
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
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
);
}
// ----------------------------------------------------------------------------
// Basic version of StandardToken, with no allowances.
// ----------------------------------------------------------------------------
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @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) public returns (bool) {
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;
}
/**
* @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) public view returns (uint256) {
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)) internal 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 amount of tokens to be transferred
*/
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;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit 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 specifying the amount of tokens still available for the spender.
*/
function allowance(
address _owner,
address _spender
)
public
view
returns (uint256)
{
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
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;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
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;
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
/**
* @title Standard Burnable Token
* @dev Adds burnFrom method to ERC20 implementations
*/
contract StandardBurnableToken is BurnableToken, StandardToken {
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param _from address The address which you want to send tokens from
* @param _value uint256 The amount of token to be burned
*/
function burnFrom(address _from, uint256 _value) public {
require(_value <= allowed[_from][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
_burn(_from, _value);
}
}
contract ArawToken is StandardBurnableToken, Ownable {
using SafeMath for uint256;
string public symbol = "ARAW";
string public name = "ARAW";
uint256 public decimals = 18;
/* Wallet address will be changed for production */
address public arawWallet;
/* Locked tokens addresses - will be changed for production */
address public reservedTokensAddress;
address public foundersTokensAddress;
address public advisorsTokensAddress;
/* Variables to manage Advisors tokens vesting periods time */
uint256 public advisorsTokensFirstReleaseTime;
uint256 public advisorsTokensSecondReleaseTime;
uint256 public advisorsTokensThirdReleaseTime;
/* Flags to indicate Advisors tokens released */
bool public isAdvisorsTokensFirstReleased;
bool public isAdvisorsTokensSecondReleased;
bool public isAdvisorsTokensThirdReleased;
/* Variables to hold reserved and founders tokens locking period */
uint256 public reservedTokensLockedPeriod;
uint256 public foundersTokensLockedPeriod;
/* Total advisors tokens allocated */
uint256 totalAdvisorsLockedTokens;
modifier checkAfterICOLock () {
if (msg.sender == reservedTokensAddress){
require (now >= reservedTokensLockedPeriod);
}
if (msg.sender == foundersTokensAddress){
require (now >= foundersTokensLockedPeriod);
}
_;
}
function transfer(address _to, uint256 _value)
public
checkAfterICOLock
returns (bool) {
super.transfer(_to,_value);
}
function transferFrom(address _from, address _to, uint256 _value)
public
checkAfterICOLock
returns (bool) {
super.transferFrom(_from, _to, _value);
}
function approve(address _spender, uint256 _value)
public
checkAfterICOLock
returns (bool) {
super.approve(_spender, _value);
}
function increaseApproval(address _spender, uint _addedValue)
public
checkAfterICOLock
returns (bool) {
super.increaseApproval(_spender, _addedValue);
}
function decreaseApproval(address _spender, uint _subtractedValue)
public
checkAfterICOLock
returns (bool) {
super.decreaseApproval(_spender, _subtractedValue);
}
/**
* @dev Transfer ownership now transfers all owners tokens to new owner
*/
function transferOwnership(address newOwner) public onlyOwner {
balances[newOwner] = balances[newOwner].add(balances[owner]);
emit Transfer(owner, newOwner, balances[owner]);
balances[owner] = 0;
super.transferOwnership(newOwner);
}
/* ICO status */
enum State {
Active,
Closed
}
event Closed();
State public state;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor(address _reservedTokensAddress, address _foundersTokensAddress, address _advisorsTokensAddress, address _arawWallet) public {
owner = msg.sender;
reservedTokensAddress = _reservedTokensAddress;
foundersTokensAddress = _foundersTokensAddress;
advisorsTokensAddress = _advisorsTokensAddress;
arawWallet = _arawWallet;
totalSupply_ = 5000000000 ether;
balances[msg.sender] = 3650000000 ether;
balances[reservedTokensAddress] = 750000000 ether;
balances[foundersTokensAddress] = 450000000 ether;
totalAdvisorsLockedTokens = 150000000 ether;
balances[this] = 150000000 ether;
state = State.Active;
emit Transfer(address(0), msg.sender, balances[msg.sender]);
emit Transfer(address(0), reservedTokensAddress, balances[reservedTokensAddress]);
emit Transfer(address(0), foundersTokensAddress, balances[foundersTokensAddress]);
emit Transfer(address(0), address(this), balances[this]);
}
/**
* @dev release tokens for advisors
*/
function releaseAdvisorsTokens() public returns (bool) {
require(state == State.Closed);
require (now > advisorsTokensFirstReleaseTime);
if (now < advisorsTokensSecondReleaseTime) {
require (!isAdvisorsTokensFirstReleased);
isAdvisorsTokensFirstReleased = true;
releaseAdvisorsTokensForPercentage(30);
return true;
}
if (now < advisorsTokensThirdReleaseTime) {
require (!isAdvisorsTokensSecondReleased);
if (!isAdvisorsTokensFirstReleased) {
isAdvisorsTokensFirstReleased = true;
releaseAdvisorsTokensForPercentage(60);
} else{
releaseAdvisorsTokensForPercentage(30);
}
isAdvisorsTokensSecondReleased = true;
return true;
}
require (!isAdvisorsTokensThirdReleased);
if (!isAdvisorsTokensFirstReleased) {
releaseAdvisorsTokensForPercentage(100);
} else if (!isAdvisorsTokensSecondReleased) {
releaseAdvisorsTokensForPercentage(70);
} else{
releaseAdvisorsTokensForPercentage(40);
}
isAdvisorsTokensFirstReleased = true;
isAdvisorsTokensSecondReleased = true;
isAdvisorsTokensThirdReleased = true;
return true;
}
/**
* @param percent tokens release for advisors from their pool
*/
function releaseAdvisorsTokensForPercentage(uint256 percent) internal {
uint256 releasedTokens = (percent.mul(totalAdvisorsLockedTokens)).div(100);
balances[advisorsTokensAddress] = balances[advisorsTokensAddress].add(releasedTokens);
balances[this] = balances[this].sub(releasedTokens);
emit Transfer(this, advisorsTokensAddress, releasedTokens);
}
/**
* @dev all ether transfer to another wallet automatic
*/
function () public payable {
require(state == State.Active); // Reject the transactions after ICO ended
require(msg.value >= 0.1 ether);
arawWallet.transfer(msg.value);
}
/**
* After ICO close it helps to lock tokens for pools
**/
function close() onlyOwner public {
require(state == State.Active);
state = State.Closed;
foundersTokensLockedPeriod = now + 365 days;
reservedTokensLockedPeriod = now + 1095 days; //3 years
advisorsTokensFirstReleaseTime = now + 12 weeks; //3 months to unlock 30 %
advisorsTokensSecondReleaseTime = now + 24 weeks; // 6 months to unlock 30%
advisorsTokensThirdReleaseTime = now + 365 days; //1 year to unlock 40 %
emit Closed();
}
}