Contract Source Code:
File 1 of 1 : IOVToken
pragma solidity ^0.4.23;
contract DSAuthority {
function canCall(
address src, address dst, bytes4 sig
) public view returns (bool);
}
contract DSAuthEvents {
event LogSetAuthority (address indexed authority);
event LogSetOwner (address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() public {
owner = msg.sender;
emit LogSetOwner(msg.sender);
}
function setOwner(address owner_)
public
auth
{
owner = owner_;
emit LogSetOwner(owner);
}
function setAuthority(DSAuthority authority_)
public
auth
{
authority = authority_;
emit LogSetAuthority(authority);
}
modifier auth {
require(isAuthorized(msg.sender, msg.sig));
_;
}
function isAuthorized(address src, bytes4 sig) internal view returns (bool) {
if (src == address(this)) {
return true;
} else if (src == owner) {
return true;
} else if (authority == DSAuthority(0)) {
return false;
} else {
return authority.canCall(src, this, sig);
}
}
}
contract DSNote {
event LogNote(
bytes4 indexed sig,
address indexed guy,
bytes32 indexed foo,
bytes32 indexed bar,
uint wad,
bytes fax
) anonymous;
modifier note {
bytes32 foo;
bytes32 bar;
assembly {
foo := calldataload(4)
bar := calldataload(36)
}
emit LogNote(msg.sig, msg.sender, foo, bar, msg.value, msg.data);
_;
}
}
contract DSStop is DSNote, DSAuth {
bool public stopped;
modifier stoppable {
require(!stopped);
_;
}
function stop() public auth note {
stopped = true;
}
function start() public auth note {
stopped = false;
}
}
contract DSMath {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x);
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x);
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x);
}
function min(uint x, uint y) internal pure returns (uint z) {
return x <= y ? x : y;
}
function max(uint x, uint y) internal pure returns (uint z) {
return x >= y ? x : y;
}
function imin(int x, int y) internal pure returns (int z) {
return x <= y ? x : y;
}
function imax(int x, int y) internal pure returns (int z) {
return x >= y ? x : y;
}
uint constant WAD = 10 ** 18;
uint constant RAY = 10 ** 27;
function wmul(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, y), WAD / 2) / WAD;
}
function rmul(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, y), RAY / 2) / RAY;
}
function wdiv(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, WAD), y / 2) / y;
}
function rdiv(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, RAY), y / 2) / y;
}
// This famous algorithm is called "exponentiation by squaring"
// and calculates x^n with x as fixed-point and n as regular unsigned.
//
// It's O(log n), instead of O(n) for naive repeated multiplication.
//
// These facts are why it works:
//
// If n is even, then x^n = (x^2)^(n/2).
// If n is odd, then x^n = x * x^(n-1),
// and applying the equation for even x gives
// x^n = x * (x^2)^((n-1) / 2).
//
// Also, EVM division is flooring and
// floor[(n-1) / 2] = floor[n / 2].
//
function rpow(uint x, uint n) internal pure returns (uint z) {
z = n % 2 != 0 ? x : RAY;
for (n /= 2; n != 0; n /= 2) {
x = rmul(x, x);
if (n % 2 != 0) {
z = rmul(z, x);
}
}
}
}
contract ERC20Events {
event Approval(address indexed src, address indexed guy, uint wad);
event Transfer(address indexed src, address indexed dst, uint wad);
}
contract ERC20 is ERC20Events {
function totalSupply() public view returns (uint);
function balanceOf(address guy) public view returns (uint);
function allowance(address src, address guy) public view returns (uint);
function approve(address guy, uint wad) public returns (bool);
function transfer(address dst, uint wad) public returns (bool);
function transferFrom(
address src, address dst, uint wad
) public returns (bool);
}
contract IOVTokenBase is ERC20, DSMath {
uint256 _supply;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _approvals;
uint256 public airdropBSupply = 5*10**6*10**8; // airdrop total supply = 500W
uint256 public currentAirdropAmount = 0;
uint256 airdropNum = 10*10**8; // 10IOV each time for airdrop
mapping (address => bool) touched; //records whether an address has received an airdrop;
constructor(uint supply) public {
_balances[msg.sender] = sub(supply, airdropBSupply);
_supply = supply;
emit Transfer(0x0, msg.sender, _balances[msg.sender]);
}
function totalSupply() public view returns (uint) {
return _supply;
}
function balanceOf(address src) public view returns (uint) {
return getBalance(src);
}
function allowance(address src, address guy) public view returns (uint) {
return _approvals[src][guy];
}
function transfer(address dst, uint wad) public returns (bool) {
return transferFrom(msg.sender, dst, wad);
}
function transferFrom(address src, address dst, uint wad)
public
returns (bool)
{
require(_balances[src] >= wad);
if (src != msg.sender) {
require(_approvals[src][msg.sender] >= wad);
_approvals[src][msg.sender] = sub(_approvals[src][msg.sender], wad);
}
_balances[src] = sub(_balances[src], wad);
_balances[dst] = add(_balances[dst], wad);
emit Transfer(src, dst, wad);
return true;
}
function approve(address guy, uint wad) public returns (bool) {
_approvals[msg.sender][guy] = wad;
emit Approval(msg.sender, guy, wad);
return true;
}
//
function getBalance(address src) internal constant returns(uint) {
if( currentAirdropAmount < airdropBSupply && !touched[src]) {
return add(_balances[src], airdropNum);
} else {
return _balances[src];
}
}
}
contract ContractLock is DSStop {
uint public unlockTime; // Start time for token transferring
mapping (address => bool) public isAdmin; // Admin accounts
event LogAddAdmin(address whoAdded, address newAdmin);
event LogRemoveAdmin(address whoRemoved, address admin);
constructor(uint _unlockTime) public {
unlockTime = _unlockTime;
isAdmin[msg.sender] = true;
emit LogAddAdmin(msg.sender, msg.sender);
}
function addAdmin(address admin) public auth returns (bool) {
if(isAdmin[admin] == false) {
isAdmin[admin] = true;
emit LogAddAdmin(msg.sender, admin);
}
return true;
}
function removeAdmin(address admin) public auth returns (bool) {
if(isAdmin[admin] == true) {
isAdmin[admin] = false;
emit LogRemoveAdmin(msg.sender, admin);
}
return true;
}
function setOwner(address owner_)
public
auth
{
removeAdmin(owner);
owner = owner_;
addAdmin(owner);
emit LogSetOwner(owner);
}
modifier onlyAdmin {
require (isAdmin[msg.sender]);
_;
}
modifier isUnlocked {
require( now > unlockTime || isAdmin[msg.sender]);
_;
}
function setUnlockTime(uint unlockTime_) public auth {
unlockTime = unlockTime_;
}
}
contract IOVToken is IOVTokenBase(10*10**9*10**8), ContractLock(1527782400) {
string public symbol;
uint256 public decimals = 8; // standard token precision. override to customize
constructor(string symbol_) public {
symbol = symbol_;
}
function approve(address guy) public stoppable returns (bool) {
return super.approve(guy, uint(-1));
}
function approve(address guy, uint wad) public stoppable returns (bool) {
return super.approve(guy, wad);
}
function transferFrom(address src, address dst, uint wad) public stoppable isUnlocked returns (bool)
{
require(_balances[src] >= wad);
if(!touched[src] && currentAirdropAmount < airdropBSupply) {
_balances[src] = add( _balances[src], airdropNum );
touched[src] = true;
currentAirdropAmount = add(currentAirdropAmount, airdropNum);
}
if (src != msg.sender && _approvals[src][msg.sender] != uint(-1)) {
require(_approvals[src][msg.sender] >= wad);
_approvals[src][msg.sender] = sub(_approvals[src][msg.sender], wad);
}
_balances[src] = sub(_balances[src], wad);
_balances[dst] = add(_balances[dst], wad);
emit Transfer(src, dst, wad);
return true;
}
function push(address dst, uint wad) public {
transferFrom(msg.sender, dst, wad);
}
function pull(address src, uint wad) public {
transferFrom(src, msg.sender, wad);
}
function move(address src, address dst, uint wad) public {
transferFrom(src, dst, wad);
}
// Optional token name
string public name = "CarLive Chain";
function setName(string name_) public auth {
name = name_;
}
//
}