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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./MuonV01.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

interface StandardToken {
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
    function decimals() external returns (uint8);
    function mint(address reveiver, uint256 amount) external returns (bool);
    function burn(address sender, uint256 amount) external returns (bool);
}

contract MuonPresale is Ownable{
    using ECDSA for bytes32;

    MuonV01 public muon;
    
    mapping (address => uint256) public balances;

    bool public running = true;

    uint256 public maxMuonDelay = 15 minutes;

    event Deposit(address token, uint256 tokenPrice, uint256 amount, 
        uint256 time, address fromAddress, address forAddress, 
        uint256 addressMaxCap);

    modifier isRunning(){
        require(running, "!running");
        _;
    }

    constructor(address _muon){
        muon = MuonV01(_muon);
    }

    function deposit(
        address token,
        uint256 tokenPrice,
        uint256 amount,
        uint256 time,
        address forAddress,
        uint256 addressMaxCap,
        bytes calldata _reqId, 
        bytes[] calldata sigs
    ) public payable isRunning{

        require(sigs.length > 1, "!sigs");

        bytes32 hash = keccak256(abi.encodePacked(token, tokenPrice, 
            amount, time, forAddress, addressMaxCap));
        hash = hash.toEthSignedMessageHash();

        bool verified = muon.verify(_reqId, hash, sigs);
        require(verified, '!verified');

        // check max
        uint256 usdAmount = amount * tokenPrice /
            (10 ** (token == address(0) ? 18 : StandardToken(token).decimals())
        );
        require(balances[forAddress] + usdAmount <= addressMaxCap, ">max");

        require(time + maxMuonDelay > block.timestamp, "muon: expired");

        if(token == address(0)){
            require(amount == msg.value, "amount err");
        }else{
            StandardToken tokenCon = StandardToken(token);
            tokenCon.transferFrom(address(msg.sender), address(this), amount);
        }

        balances[forAddress] = balances[forAddress] + usdAmount;
        emit Deposit(token, tokenPrice, amount, 
            time, msg.sender, forAddress, addressMaxCap);
    }

    function setMuonContract(address addr) public onlyOwner{
        muon = MuonV01(addr);
    }

    function setIsRunning(bool val) public onlyOwner{
        running = val;
    }

    function setMaxMuonDelay(uint256 delay) public onlyOwner{
        maxMuonDelay = delay;
    }

    function emergencyWithdrawETH(uint256 amount, address addr) public onlyOwner{
        require(addr != address(0));
        payable(addr).transfer(amount);
    }

    function emergencyWithdrawERC20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner {
        StandardToken(_tokenAddr).transfer(_to, _amount);
    }
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

contract MuonV01 is Ownable {
    using ECDSA for bytes32;

    event Transaction(bytes reqId);

    mapping(address => bool) public signers;

    constructor(){
        //initial nodes
        signers[0x06A85356DCb5b307096726FB86A78c59D38e08ee] = true;
        signers[0x4513218Ce2e31004348Fd374856152e1a026283C] = true;
        signers[0xe4f507b6D5492491f4B57f0f235B158C4C862fea] = true;
        signers[0x2236ED697Dab495e1FA17b079B05F3aa0F94E1Ef] = true;
        signers[0xCA40791F962AC789Fdc1cE589989444F851715A8] = true;
        signers[0x7AA04BfC706095b748979FE3E3dB156C3dFb9451] = true;
        signers[0x60AA825FffaF4AC68392D886Cc2EcBCBa3Df4BD9] = true;
        signers[0x031e6efe16bCFB88e6bfB068cfd39Ca02669Ae7C] = true;
        signers[0x27a58c0e7688F90B415afA8a1BfA64D48A835DF7] = true;
        signers[0x11C57ECa88e4A40b7B041EF48a66B9a0EF36b830] = true;
    }

    function verify(bytes calldata _reqId, bytes32 hash, bytes[] calldata sigs) public returns (bool) {
        uint i;
        address signer;
        for(i=0 ; i<sigs.length ; i++){
            signer = hash.recover(sigs[i]);
            // require(attualSigner == signer, "Signature not confirmed");
            if(signers[signer] != true)
                return false;
        }
        if(sigs.length > 0){
            emit Transaction(_reqId);
            return true;
        }
        else{
            return false;
        }
    }

    function ownerAddSigner(address _signer) public onlyOwner {
        signers[_signer] = true;
    }

    function ownerRemoveSigner(address _signer) public onlyOwner {
        delete signers[_signer];
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
        } else if (signature.length == 64) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let vs := mload(add(signature, 0x40))
                r := mload(add(signature, 0x20))
                s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
                v := add(shr(255, vs), 27)
            }
        } else {
            revert("ECDSA: invalid signature length");
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

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[{"inputs":[{"internalType":"address","name":"_muon","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenPrice","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"},{"indexed":false,"internalType":"address","name":"fromAddress","type":"address"},{"indexed":false,"internalType":"address","name":"forAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"addressMaxCap","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"tokenPrice","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"time","type":"uint256"},{"internalType":"address","name":"forAddress","type":"address"},{"internalType":"uint256","name":"addressMaxCap","type":"uint256"},{"internalType":"bytes","name":"_reqId","type":"bytes"},{"internalType":"bytes[]","name":"sigs","type":"bytes[]"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenAddr","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"emergencyWithdrawERC20Tokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"addr","type":"address"}],"name":"emergencyWithdrawETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"maxMuonDelay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"muon","outputs":[{"internalType":"contract MuonV01","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"running","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"val","type":"bool"}],"name":"setIsRunning","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"delay","type":"uint256"}],"name":"setMaxMuonDelay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setMuonContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000009dd25aaaaecedf3ceb484bf67803ad03f42c8721

-----Decoded View---------------
Arg [0] : _muon (address): 0x9dd25aaAAECeDf3ceB484bf67803AD03F42C8721

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000009dd25aaaaecedf3ceb484bf67803ad03f42c8721