leifeng(雷锋)

{{
  "language": "Solidity",
  "sources": {
    "leifeng.sol": {
      "content": "// Submitted by EthereumHistory (ethereumhistory.com)\npragma solidity ^0.4.19;\n\n\n\nlibrary SafeMath {\n  function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n    uint256 c = a * b;\n    assert(a == 0 || c / a == b);\n    return c;\n  }\n\n  function div(uint256 a, uint256 b) internal pure returns (uint256) {\n    uint256 c = a / b;\n    return c;\n  }\n\n  function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n    assert(b <= a);\n    return a - b;\n  }\n\n  function add(uint256 a, uint256 b) internal pure returns (uint256) {\n    uint256 c = a + b;\n    assert(c >= a);\n    return c;\n  }\n}\n\ncontract ForeignToken {\n    function balanceOf(address _owner) constant public returns (uint256);\n    function transfer(address _to, uint256 _value) public returns (bool);\n}\n\ncontract ERC20Basic {\n    uint256 public totalSupply;\n    function balanceOf(address who) public constant returns (uint256);\n    function transfer(address to, uint256 value) public returns (bool);\n    event Transfer(address indexed from, address indexed to, uint256 value);\n}\n\ncontract ERC20 is ERC20Basic {\n    function allowance(address owner, address spender) public constant returns (uint256);\n    function transferFrom(address from, address to, uint256 value) public returns (bool);\n    function approve(address spender, uint256 value) public returns (bool);\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n\ninterface Token { \n    function distr(address _to, uint256 _value) public returns (bool);\n    function totalSupply() constant public returns (uint256 supply);\n    function balanceOf(address _owner) constant public returns (uint256 balance);\n}\n\ncontract\tleifeng  is ERC20 {\n    \n    using SafeMath for uint256;\n    address owner = msg.sender;\n\n    mapping (address => uint256) balances;\n    mapping (address => mapping (address => uint256)) allowed;\n    mapping (address => bool) public blacklist;\n\n    string public constant name = \"leifeng\";\n    string public constant symbol = \"雷锋\";\n    uint public constant decimals = 8;\n    \n    uint256 public totalSupply = 500000000e8;\n    uint256 public totalDistributed = 50000000e8;\n    uint256 public totalRemaining = totalSupply.sub(totalDistributed);\n    uint256 public value;\n\n    event Transfer(address indexed _from, address indexed _to, uint256 _value);\n    event Approval(address indexed _owner, address indexed _spender, uint256 _value);\n    \n    event Distr(address indexed to, uint256 amount);\n    event DistrFinished();\n    \n    event Burn(address indexed burner, uint256 value);\n\n    bool public distributionFinished = false;\n    \n    modifier canDistr() {\n        require(!distributionFinished);\n        _;\n    }\n    \n    modifier onlyOwner() {\n        require(msg.sender == owner);\n        _;\n    }\n    \n    modifier onlyWhitelist() {\n        require(blacklist[msg.sender] == false);\n        _;\n    }\n    \n    function leifeng () public {\n        owner = msg.sender;\n        value = 5000e8;\n        distr(owner, totalDistributed);\n    }\n    \n    function transferOwnership(address newOwner) onlyOwner public {\n        if (newOwner != address(0)) {\n            owner = newOwner;\n        }\n    }\n    \n    function finishDistribution() onlyOwner canDistr public returns (bool) {\n        distributionFinished = true;\n        DistrFinished();\n        return true;\n    }\n    \n    function distr(address _to, uint256 _amount) canDistr private returns (bool) {\n        totalDistributed = totalDistributed.add(_amount);\n        totalRemaining = totalRemaining.sub(_amount);\n        balances[_to] = balances[_to].add(_amount);\n        Distr(_to, _amount);\n        Transfer(address(0), _to, _amount);\n        return true;\n        \n        if (totalDistributed >= totalSupply) {\n            distributionFinished = true;\n        }\n    }\n    \n    function airdrop(address[] addresses) onlyOwner canDistr public {\n        \n        require(addresses.length <= 255);\n        require(value <= totalRemaining);\n        \n        for (uint i = 0; i < addresses.length; i++) {\n            require(value <= totalRemaining);\n            distr(addresses[i], value);\n        }\n\t\n        if (totalDistributed >= totalSupply) {\n            distributionFinished = true;\n        }\n    }\n    \n    function distribution(address[] addresses, uint256 amount) onlyOwner canDistr public {\n        \n        require(addresses.length <= 255);\n        require(amount <= totalRemaining);\n        \n        for (uint i = 0; i < addresses.length; i++) {\n            require(amount <= totalRemaining);\n            distr(addresses[i], amount);\n        }\n\t\n        if (totalDistributed >= totalSupply) {\n            distributionFinished = true;\n        }\n    }\n    \n    function distributeAmounts(address[] addresses, uint256[] amounts) onlyOwner canDistr public {\n\n        require(addresses.length <= 255);\n        require(addresses.length == amounts.length);\n        \n        for (uint8 i = 0; i < addresses.length; i++) {\n            require(amounts[i] <= totalRemaining);\n            distr(addresses[i], amounts[i]);\n            \n            if (totalDistributed >= totalSupply) {\n                distributionFinished = true;\n            }\n        }\n    }\n    \n    function () external payable {\n            getTokens();\n     }\n    \n    function getTokens() payable canDistr public {\n        \n        if (value > totalRemaining) {\n            value = totalRemaining;\n        }\n        \n        require(value <= totalRemaining);\n        \n        address investor = msg.sender;\n        uint256 toGive = value;\n        \n        distr(investor, toGive);\n        \n        if (toGive > 0) {\n            blacklist[investor] = true;\n        }\n\n        if (totalDistributed >= totalSupply) {\n            distributionFinished = true;\n        }\n    }\n\n    function balanceOf(address _owner) constant public returns (uint256) {\n\t    return balances[_owner];\n    }\n\n    // mitigates the ERC20 short address attack\n    modifier onlyPayloadSize(uint size) {\n        assert(msg.data.length >= size + 4);\n        _;\n    }\n    \n    function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) {\n\n        require(_to != address(0));\n        require(_amount <= balances[msg.sender]);\n        \n        balances[msg.sender] = balances[msg.sender].sub(_amount);\n        balances[_to] = balances[_to].add(_amount);\n        Transfer(msg.sender, _to, _amount);\n        return true;\n    }\n    \n    function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) {\n\n        require(_to != address(0));\n        require(_amount <= balances[_from]);\n        require(_amount <= allowed[_from][msg.sender]);\n        \n        balances[_from] = balances[_from].sub(_amount);\n        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);\n        balances[_to] = balances[_to].add(_amount);\n        Transfer(_from, _to, _amount);\n        return true;\n    }\n    \n    function approve(address _spender, uint256 _value) public returns (bool success) {\n        // mitigates the ERC20 spend/approval race condition\n        if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }\n        allowed[msg.sender][_spender] = _value;\n        Approval(msg.sender, _spender, _value);\n        return true;\n    }\n    \n    function allowance(address _owner, address _spender) constant public returns (uint256) {\n        return allowed[_owner][_spender];\n    }\n    \n    function getTokenBalance(address tokenAddress, address who) constant public returns (uint){\n        ForeignToken t = ForeignToken(tokenAddress);\n        uint bal = t.balanceOf(who);\n        return bal;\n    }\n    \n    function withdraw() onlyOwner public {\n        uint256 etherBalance = this.balance;\n        owner.transfer(etherBalance);\n    }\n    \n    function burn(uint256 _value) onlyOwner public {\n        require(_value <= balances[msg.sender]);\n        // no need to require value <= totalSupply, since that would imply the\n        // sender's balance is greater than the totalSupply, which *should* be an assertion failure\n\n        address burner = msg.sender;\n        balances[burner] = balances[burner].sub(_value);\n        totalSupply = totalSupply.sub(_value);\n        totalDistributed = totalDistributed.sub(_value);\n        Burn(burner, _value);\n    }\n    \n    function withdrawForeignTokens(address _tokenContract) onlyOwner public returns (bool) {\n        ForeignToken token = ForeignToken(_tokenContract);\n        uint256 amount = token.balanceOf(address(this));\n        return token.transfer(owner, amount);\n    }\n\n\n}"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}