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pragma solidity ^0.4.22;
library SafeMath {
function add(uint a, uint b) internal pure returns (uint c) {
c = a + b;
require(c >= a);
}
function sub(uint a, uint b) internal pure returns (uint c) {
require(b <= a);
c = a - b;
}
function mul(uint a, uint b) internal pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function div(uint a, uint b) internal pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
contract ERC20Interface {
function totalSupply() public view returns (uint);
function balanceOf(address tokenOwner) public view returns (uint balance);
function allowance(address tokenOwner, address spender) public view returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
event FrozenFunds(address target, uint tokens);
event Buy(address indexed sender, uint eth, uint token);
}
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public onlyOwner {
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
contract Pausable is Owned {
event Pause();
event Unpause();
bool public paused = false;
modifier whenNotPaused() {
require(!paused);
_;
}
modifier whenPaused() {
require(paused);
_;
}
function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
function unpause() onlyOwner whenPaused public {
paused = false;
emit Unpause();
}
}
contract VXR is ERC20Interface, Pausable {
using SafeMath for uint;
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) public balances;
mapping(address => uint) public lockInfo;
mapping(address => mapping(address => uint)) internal allowed;
mapping (address => bool) public admins;
modifier onlyAdmin {
require(msg.sender == owner || admins[msg.sender]);
_;
}
function setAdmin(address _admin, bool isAdmin) public onlyOwner {
admins[_admin] = isAdmin;
}
constructor() public{
symbol = 'VXR';
name = 'Versara Trade';
decimals = 18;
_totalSupply = 1000000000*10**uint(decimals);
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply;
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function _transfer(address _from, address _to, uint _value) internal {
require(_to != 0x0);
require(_value != 0);
require(balances[_from] >= _value);
require(balances[_from] - _value >= lockInfo[_from]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(_from, _to, _value);
}
function transfer(address to, uint tokens) public whenNotPaused returns (bool success) {
_transfer(msg.sender, to, tokens);
return true;
}
function approve(address _spender, uint tokens) public whenNotPaused returns (bool success) {
allowed[msg.sender][_spender] = tokens;
emit Approval(msg.sender, _spender, tokens);
return true;
}
function transferFrom(address from, address to, uint tokens) public whenNotPaused returns (bool success) {
require(allowed[from][msg.sender] >= tokens);
_transfer(from, to, tokens);
allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);
return true;
}
function allowance(address tokenOwner, address spender) public whenNotPaused view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function lockOf(address tokenOwner) public view returns (uint lockedToken) {
return lockInfo[tokenOwner];
}
function lock(address target, uint lockedToken) public whenNotPaused onlyAdmin {
lockInfo[target] = lockedToken;
emit FrozenFunds(target, lockedToken);
}
function batchLock(address[] accounts, uint lockedToken) public whenNotPaused onlyAdmin {
for (uint i = 0; i < accounts.length; i++) {
lock(accounts[i], lockedToken);
}
}
function batchLockArray(address[] accounts, uint[] lockedToken) public whenNotPaused onlyAdmin {
for (uint i = 0; i < accounts.length; i++) {
lock(accounts[i], lockedToken[i]);
}
}
function batchAirdropWithLock(address[] receivers, uint tokens, bool freeze) public whenNotPaused onlyAdmin {
for (uint i = 0; i < receivers.length; i++) {
sendTokensWithLock(receivers[i], tokens, freeze);
}
}
function batchVipWithLock(address[] receivers, uint[] tokens, bool freeze) public whenNotPaused onlyAdmin {
for (uint i = 0; i < receivers.length; i++) {
sendTokensWithLock(receivers[i], tokens[i], freeze);
}
}
function sendTokensWithLock (address receiver, uint tokens, bool freeze) public whenNotPaused onlyAdmin {
_transfer(msg.sender, receiver, tokens);
if(freeze) {
uint lockedAmount = lockInfo[receiver] + tokens;
lock(receiver, lockedAmount);
}
}
function sendInitialTokens (address user) public onlyOwner {
_transfer(msg.sender, user, balanceOf(owner));
}
} |