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;
}
}
/**
* @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 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, "Only the Contract owner can perform this action");
_;
}
/**
* @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), "New owner cannot be current owner");
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
/// Total amount of tokens
uint256 public totalSupply;
function balanceOf(address _owner) public view returns (uint256 balance);
function transfer(address _to, uint256 _amount) public returns (bool success);
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 remaining);
function transferFrom(address _from, address _to, uint256 _amount) public returns (bool success);
function approve(address _spender, uint256 _amount) public returns (bool success);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
uint balanceOfParticipant;
uint lockedAmount;
uint allowedAmount;
bool lockupIsActive = false;
uint256 lockupStartTime;
// balances for each address
mapping(address => uint256) balances;
struct Lockup {
uint256 lockupAmount;
}
Lockup lockup;
mapping(address => Lockup) lockupParticipants;
event LockupStarted(uint256 indexed lockupStartTime);
function requireWithinLockupRange(address _spender, uint256 _amount) internal {
if (lockupIsActive) {
uint timePassed = now - lockupStartTime;
balanceOfParticipant = balances[_spender];
lockedAmount = lockupParticipants[_spender].lockupAmount;
allowedAmount = lockedAmount;
if (timePassed < 92 days) {
allowedAmount = lockedAmount.mul(5).div(100);
} else if (timePassed >= 92 days && timePassed < 183 days) {
allowedAmount = lockedAmount.mul(30).div(100);
} else if (timePassed >= 183 days && timePassed < 365 days) {
allowedAmount = lockedAmount.mul(55).div(100);
}
require(
balanceOfParticipant.sub(_amount) >= lockedAmount.sub(allowedAmount),
"Must maintain correct % of PVC during lockup periods"
);
}
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _amount The amount to be transferred.
*/
function transfer(address _to, uint256 _amount) public returns (bool success) {
require(_to != msg.sender, "Cannot transfer to self");
require(_to != address(this), "Cannot transfer to Contract");
require(_to != address(0), "Cannot transfer to 0x0");
require(
balances[msg.sender] >= _amount && _amount > 0 && balances[_to].add(_amount) > balances[_to],
"Cannot transfer (Not enough balance)"
);
requireWithinLockupRange(msg.sender, _amount);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_amount);
balances[_to] = balances[_to].add(_amount);
emit Transfer(msg.sender, _to, _amount);
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 balance) {
return balances[_owner];
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
*/
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 _amount uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _amount) public returns (bool success) {
require(_from != msg.sender, "Cannot transfer from self, use transfer function instead");
require(_from != address(this) && _to != address(this), "Cannot transfer from or to Contract");
require(_to != address(0), "Cannot transfer to 0x0");
require(balances[_from] >= _amount, "Not enough balance to transfer from");
require(allowed[_from][msg.sender] >= _amount, "Not enough allowance to transfer from");
require(_amount > 0 && balances[_to].add(_amount) > balances[_to], "Amount must be > 0 to transfer from");
requireWithinLockupRange(_from, _amount);
balances[_from] = balances[_from].sub(_amount);
balances[_to] = balances[_to].add(_amount);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);
emit Transfer(_from, _to, _amount);
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 _amount The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _amount) public returns (bool success) {
require(_spender != msg.sender, "Cannot approve an allowance to self");
require(_spender != address(this), "Cannot approve contract an allowance");
require(_spender != address(0), "Cannot approve 0x0 an allowance");
allowed[msg.sender][_spender] = _amount;
emit Approval(msg.sender, _spender, _amount);
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 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is StandardToken, Ownable {
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 onlyOwner {
require(_value <= balances[msg.sender], "Not enough balance to burn");
// 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[msg.sender] = balances[msg.sender].sub(_value);
totalSupply = totalSupply.sub(_value);
emit Burn(msg.sender, _value);
}
}
/**
* @title Brainz
* @dev Token representing Brainz.
*/
contract StoboxToken is BurnableToken {
string public name;
string public symbol;
uint8 public decimals = 18;
/**
* @dev users sending ether to this contract will be reverted. Any ether sent to the contract will be sent back to the caller
*/
function() external payable {
revert("Cannot send Ether to this contract");
}
/**
* @dev Constructor function to initialize the initial supply of token to the creator of the contract
*/
constructor(address wallet) public {
owner = wallet;
totalSupply = uint(1000000000).mul(10 ** uint256(decimals)); //Update total supply with the decimal amount
name = "Stobox Token";
symbol = "STBU";
balances[wallet] = totalSupply;
//Emitting transfer event since assigning all tokens to the creator also corresponds to the transfer of tokens to the creator
emit Transfer(address(0), msg.sender, totalSupply);
}
/**
* @dev helper method to get token details, name, symbol and totalSupply in one go
*/
function getTokenDetail() public view returns (string memory, string memory, uint256) {
return (name, symbol, totalSupply);
}
function vest(address[] memory _owners, uint[] memory _amounts) public onlyOwner {
require(_owners.length == _amounts.length, "Length of addresses & token amounts are not the same");
for (uint i = 0; i < _owners.length; i++) {
_amounts[i] = _amounts[i].mul(10 ** 18);
require(_owners[i] != address(0), "Vesting funds cannot be sent to 0x0");
require(_amounts[i] > 0, "Amount must be > 0");
require(balances[owner] > _amounts[i], "Not enough balance to vest");
require(balances[_owners[i]].add(_amounts[i]) > balances[_owners[i]], "Internal vesting error");
// SafeMath.sub will throw if there is not enough balance.
balances[owner] = balances[owner].sub(_amounts[i]);
balances[_owners[i]] = balances[_owners[i]].add(_amounts[i]);
emit Transfer(owner, _owners[i], _amounts[i]);
lockup = Lockup({ lockupAmount: _amounts[i] });
lockupParticipants[_owners[i]] = lockup;
}
}
function initiateLockup() public onlyOwner {
uint256 currentTime = now;
lockupIsActive = true;
lockupStartTime = currentTime;
emit LockupStarted(currentTime);
}
function lockupActive() public view returns (bool) {
return lockupIsActive;
}
function lockupAmountOf(address _owner) public view returns (uint256) {
return lockupParticipants[_owner].lockupAmount;
}
}
{
"compilationTarget": {
"StoboxToken.sol": "StoboxToken"
},
"evmVersion": "byzantium",
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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