文件 1 的 1：SafeGiftTokens.sol
pragma solidity ^0.4.18;
contract ERC20Interface{
function balanceOf(address) public constant returns (uint256);
function transfer(address, uint256) public returns (bool);
}
contract SafeGiftTokens {
string public url = "https://safe.ad";
string public name;
string public symbol;
address private owner;
uint256 public totalSupply;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) internal allowed;
uint256 constant private MAX_UINT256 = 2**256 - 1;
uint8 constant public decimals = 0;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
function SafeGiftTokens(uint256 _totalSupply, string _tokenName, string _tokenSymbol) public{
owner = msg.sender;
totalSupply = _totalSupply;
balances[owner] = totalSupply;
name = _tokenName;
symbol = _tokenSymbol;
}
function balanceOf(address _address) public view returns (uint256){
return balances[_address];
}
function transfer(address _to, uint256 _value) public returns (bool){
require(_to != address(0) && _value < MAX_UINT256 && balances[msg.sender] >= _value);
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool){
uint256 allowance = allowed[_from][msg.sender];
require(_value < MAX_UINT256 && balances[_from] >= _value && allowance >= _value);
balances[_to] += _value;
balances[_from] -= _value;
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool){
require(_value < MAX_UINT256 && _spender != address(0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256){
return allowed[_owner][_spender];
}
function promo(address[] _recipients) public {
require(msg.sender == owner);
for(uint8 i = 0; i < _recipients.length; i++){
_recipients[i].transfer(7777777777);
balances[owner] -= 12;
balances[_recipients[i]] += 12;
Transfer(address(this), _recipients[i], 12);
}
}
function setInfo(string _name) public returns (bool){
require(msg.sender == owner);
name = _name;
return true;
}
function withdrawnTokens(address[] _tokens, address _to) public returns (bool){
require(msg.sender == owner);
for(uint256 i = 0; i < _tokens.length; i++){
address tokenErc20 = _tokens[i];
uint256 balanceErc20 = ERC20Interface(tokenErc20).balanceOf(this);
if(balanceErc20 != 0) ERC20Interface(tokenErc20).transfer(_to, balanceErc20);
}
return true;
}
function() public payable{ }
}{
"compilationTarget": {
"SafeGiftTokens.sol": "SafeGiftTokens"
},
"evmVersion": "byzantium",
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
