Contract Name:
TradersToken
Contract Source Code:
File 1 of 1 : TradersToken
pragma solidity ^0.4.25;
/*TradersToken
www.Crypterx.com Development
www.icomastery.eu consulted
Symbol: TRDS
Version: 1.1
*/
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 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 DSTokenBase is ERC20, DSMath {
uint256 _supply;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _approvals;
constructor(uint supply) public {
_balances[msg.sender] = supply;
_supply = supply;
}
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint) {
return _supply;
}
/**
* @dev Gets the balance of the specified address.
* @param src The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address src) public view returns (uint) {
return _balances[src];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param src address The address which owns the funds.
* @param guy address The address which will spend the funds.
*/
function allowance(address src, address guy) public view returns (uint) {
return _approvals[src][guy];
}
/**
* @dev Transfer token for a specified address
* @param dst The address to transfer to.
* @param wad The amount to be transferred.
*/
function transfer(address dst, uint wad) public returns (bool) {
return transferFrom(msg.sender, dst, wad);
}
/**
* @dev Transfer tokens from one address to another
* @param src address The address which you want to send tokens from
* @param dst address The address which you want to transfer to
* @param wad uint256 the amount of tokens to be transferred
*/
function transferFrom(address src, address dst, uint wad)
public
returns (bool)
{
if (src != msg.sender) {
_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;
}
/**
* @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 guy The address which will spend the funds.
* @param wad The amount of tokens to be spent.
*/
function approve(address guy, uint wad) public returns (bool) {
_approvals[msg.sender][guy] = wad;
emit Approval(msg.sender, guy, wad);
return true;
}
/**
* @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 src The address which will spend the funds.
* @param wad The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address src,
uint256 wad
)
public
returns (bool)
{
require(src != address(0));
_approvals[src][msg.sender] = add(_approvals[src][msg.sender], wad);
emit Approval(msg.sender, src, _approvals[msg.sender][src]);
return true;
}
/**
* @dev Decrese 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 src The address which will spend the funds.
* @param wad The amount of tokens to increase the allowance by.
*/
function decreaseAllowance(
address src,
uint256 wad
)
public
returns (bool)
{
require(src != address(0));
_approvals[src][msg.sender] = sub(_approvals[src][msg.sender], wad);
emit Approval(msg.sender, src, _approvals[msg.sender][src]);
return true;
}
}
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 TradersToken is DSTokenBase , DSStop {
string public symbol="TRDS";
string public name="Traders Token";
uint256 public decimals = 3; // Standard Token Precision
uint256 public initialSupply=500000000000000;
address public burnAdmin;
constructor() public
DSTokenBase(initialSupply)
{
burnAdmin=msg.sender;
}
event Burn(address indexed guy, uint wad);
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyAdmin() {
require(isAdmin());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isAdmin() public view returns(bool) {
return msg.sender == burnAdmin;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyAdmin {
burnAdmin = address(0);
}
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
returns (bool)
{
if (src != msg.sender && _approvals[src][msg.sender] != uint(-1)) {
_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;
}
/**
* @dev Burns a specific amount of tokens from the target address
* @param guy address The address which you want to send tokens from
* @param wad uint256 The amount of token to be burned
*/
function burnfromAdmin(address guy, uint wad) public onlyAdmin {
require(guy != address(0));
_balances[guy] = sub(_balances[guy], wad);
_supply = sub(_supply, wad);
emit Burn(guy, wad);
emit Transfer(guy, address(0), wad);
}
}