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Outline

•  contract Nest_3_Leveling *
•    - function changeMapping(address voteFa ...
•    - function tranEth(uint256 amount, addr ...
•    - function switchToEth(address token)
•    - function checkEthMapping(address toke ...
•    - function turnOutAllEth(uint256 amount ...
• interface Nest_3_VoteFactory
•    - function checkAddress(string calldata ...
•    - function checkOwners(address man)
• library SafeMath
•    - function add(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b, st ...
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b, st ...
•    - function mod(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b, st ...
• library address_make_payable
•    - function make_payable(address x)

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/**
 *Submitted for verification at Etherscan.io on 2020-07-28
*/

pragma solidity 0.6.0;

/**
 * @title Leveling contract
 * @dev ETH transfer in and transfer out
 */
contract Nest_3_Leveling {
    using address_make_payable for address;
    using SafeMath for uint256;
    Nest_3_VoteFactory _voteFactory;                                //  Vote contract
    mapping (address => uint256) ethMapping;                        //  Corresponded ETH leveling ledger of token
    
    /**
    * @dev Initialization method
    * @param voteFactory Voting contract address
    */
    constructor (address voteFactory) public {
        _voteFactory = Nest_3_VoteFactory(voteFactory); 
    }
    
    /**
    * @dev Modifying voting contract
    * @param voteFactory Voting contract address
    */
    function changeMapping(address voteFactory) public onlyOwner {
        _voteFactory = Nest_3_VoteFactory(voteFactory); 
    }
    
    /**
    * @dev Transfer out leveling
    * @param amount Transfer-out amount
    * @param token Corresponding lock-up token
    * @param target Transfer-out target
    */
    function tranEth(uint256 amount, address token, address target) public returns (uint256) {
        require(address(msg.sender) == address(_voteFactory.checkAddress("nest.v3.tokenAbonus")), "No authority");
        uint256 tranAmount = amount;
        if (tranAmount > ethMapping[token]) {
            tranAmount = ethMapping[token];
        }
        ethMapping[token] = ethMapping[token].sub(tranAmount);
        address payable addr = target.make_payable();
        addr.transfer(tranAmount);
        return tranAmount;
    }
    
    /**
    * @dev Transfer in leveling 
    * @param token Corresponded locked token
    */
    function switchToEth(address token) public payable {
        ethMapping[token] = ethMapping[token].add(msg.value);
    }
    
    //  Check the leveled amount corresponding to the token
    function checkEthMapping(address token) public view returns (uint256) {
        return ethMapping[token];
    }
    
    //  Withdraw ETH
    function turnOutAllEth(uint256 amount, address target) public onlyOwner {
        address payable addr = target.make_payable();
        addr.transfer(amount);  
    }
    
    //  Administrator only
    modifier onlyOwner(){
        require(_voteFactory.checkOwners(address(msg.sender)), "No authority");
        _;
    }
}

// Voting factory
interface Nest_3_VoteFactory {
    //  Check address
	function checkAddress(string calldata name) external view returns (address contractAddress);
	//  Check whether the administrator
	function checkOwners(address man) external view returns (bool);
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

library address_make_payable {
   function make_payable(address x) internal pure returns (address payable) {
      return address(uint160(x));
   }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"voteFactory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"voteFactory","type":"address"}],"name":"changeMapping","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"checkEthMapping","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"switchToEth","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"target","type":"address"}],"name":"tranEth","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"target","type":"address"}],"name":"turnOutAllEth","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000a628845c523975493da88ac3641a803e92fa5d54

-----Decoded View---------------
Arg [0] : voteFactory (address): 0xa628845c523975493DA88Ac3641a803E92fa5d54

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a628845c523975493da88ac3641a803e92fa5d54

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ipfs://699fa80d9de0d56d03106e31e2917c35b8e9d07eb2d56d6f8282d8602db1ffaf