Contract Source Code:
File 1 of 1 : EMPRO
pragma solidity ^0.4.19;
/**
* @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;
}
}
contract Owned {
address private Owner;
function Owned() public{
Owner = msg.sender;
}
function IsOwner(address addr) view public returns(bool)
{
return Owner == addr;
}
function TransferOwner(address newOwner) public onlyOwner
{
Owner = newOwner;
}
function Terminate() public onlyOwner
{
selfdestruct(Owner);
}
modifier onlyOwner(){
require(msg.sender == Owner);
_;
}
}
contract EMPRO is Owned {
using SafeMath for uint256;
string public constant name = "empowr orange";
string public constant symbol = "EMPRO";
uint256 public constant decimals = 18; // 18 is the most common number of decimal places
bool private tradeable;
uint256 private currentSupply;
mapping(address => uint256) private balances;
mapping(address => mapping(address=> uint256)) private allowed;
mapping(address => bool) private lockedAccounts;
/*
Incoming Ether
*/
event ReceivedEth(address indexed _from, uint256 _value);
//this is the fallback
function () payable public {
emit ReceivedEth(msg.sender, msg.value);
}
event TransferredEth(address indexed _to, uint256 _value);
function FoundationTransfer(address _to, uint256 amtEth, uint256 amtToken) public onlyOwner
{
require(address(this).balance >= amtEth && balances[this] >= amtToken );
if(amtEth >0)
{
_to.transfer(amtEth);
emit TransferredEth(_to, amtEth);
}
if(amtToken > 0)
{
require(balances[_to] + amtToken > balances[_to]);
balances[this] -= amtToken;
balances[_to] += amtToken;
emit Transfer(this, _to, amtToken);
}
}
/*
End Incoming Ether
*/
function EMPRO( ) public
{
uint256 initialTotalSupply = 10;
balances[this] = initialTotalSupply * (10**decimals);
currentSupply = initialTotalSupply * (10**decimals);
emit Transfer(address(0), this, currentSupply);
}
function MintToken(uint256 amt) public onlyOwner {
require(balances[this] + amt >= balances[this]);
currentSupply += amt;
balances[this] += amt;
emit Transfer(address(0), this, amt);
}
function DestroyToken(uint256 amt) public onlyOwner {
require ( balances[this] >= amt);
currentSupply -= amt;
balances[this] -= amt;
emit Transfer(this,address(0), amt);
}
event SoldToken(address _buyer, uint256 _value, string note);
function BuyToken(address _buyer, uint256 _value, string note) public onlyOwner
{
require(balances[this] >= _value && balances[_buyer] + _value > balances[_buyer]);
emit SoldToken( _buyer, _value, note);
balances[this] -= _value;
balances[_buyer] += _value;
emit Transfer(this, _buyer, _value);
}
function LockAccount(address toLock) public onlyOwner
{
lockedAccounts[toLock] = true;
}
function UnlockAccount(address toUnlock) public onlyOwner
{
delete lockedAccounts[toUnlock];
}
function SetTradeable(bool t) public onlyOwner
{
tradeable = t;
}
function IsTradeable() public view returns(bool)
{
return tradeable;
}
function totalSupply() constant public returns (uint256)
{
return currentSupply;
}
function balanceOf(address _owner) constant public returns (uint256 balance)
{
return balances[_owner];
}
function transfer(address _to, uint256 _value) public notLocked returns (bool success) {
require(tradeable);
if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
emit Transfer( msg.sender, _to, _value);
balances[msg.sender] -= _value;
balances[_to] += _value;
return true;
} else {
return false;
}
}
function transferFrom(address _from, address _to, uint _value)public notLocked returns (bool success) {
require(!lockedAccounts[_from] && !lockedAccounts[_to]);
require(tradeable);
if (balances[_from] >= _value
&& allowed[_from][msg.sender] >= _value
&& balances[_to] + _value > balances[_to]) {
emit Transfer( _from, _to, _value);
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
balances[_to] += _value;
return true;
} else {
return false;
}
}
/**
* @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;
}
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
modifier notLocked(){
require (!lockedAccounts[msg.sender]);
_;
}
}