Contract 0xd375e22f5d98cc808454d8f67b78dc20c3219959

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xea808238b09aec249be2b0e4502ac20acc5a884a378f3b429315b239a89d2812Transfer Ownersh...176085952021-08-04 10:28:13293 days 14 hrs agoIron.Finance: Deployer IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.0000286011.000000001
0xf074eb7d37ba98f77d6bc723a86a4bd96d23632e55dfcc94c2fab04ff30dea10Transfer Ownersh...175683202021-08-03 9:41:11294 days 15 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000057488012.01
0x2bdbb63db8c471bbe1c021d79db73edb364c2ede9421f402e75b8462647c7bdeSet Token Config175573412021-08-03 3:10:33294 days 21 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000183938171.01
0xfedf4f53a38d407d92516e614200557f6b51846342ab24d5c6be692b542a977cSet Token Config175571732021-08-03 3:04:45294 days 21 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000183938171.01
0x0a4479ada329d1664000a3981029b6fcaef855866d5fdfd4557113a65149e69eSet Token Config175571112021-08-03 3:02:37294 days 21 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000163596771.01
0x4349bdc9f5c6f0a3ed3045b1fde0494b162522012cc4b520f4f259f5f51bb298Set Token Config175570062021-08-03 2:59:03294 days 21 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000183938171.01
0xcd0dcbb328f6d0a9e42612b4e7480ddb824d7cdd9e1aa17a870677fdf081f33dSet Token Config175568972021-08-03 2:53:09294 days 21 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  0xd375e22f5d98cc808454d8f67b78dc20c32199590 MATIC0.000183938171.01
0x3e9f3cff9782a4376f198b299b50ad7a31e9e33a94f4c0770e40fd2589526d8f0x60806040175566602021-08-03 2:44:59294 days 22 hrs ago0xedbb998a088bf26cef12991806df813e61ba2690 IN  Contract Creation0 MATIC0.000814925571.01
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xd43EB9BA257f6f60f58D731D801F71ff8eDCD65a

Contract Name:
ChainlinkPriceFeed

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 8 : AggregatorV3Interface.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {

  function decimals()
    external
    view
    returns (
      uint8
    );

  function description()
    external
    view
    returns (
      string memory
    );

  function version()
    external
    view
    returns (
      uint256
    );

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(
    uint80 _roundId
  )
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

}

File 2 of 8 : Ownable.sol
// 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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 8 : Context.sol
// 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) {
        return msg.data;
    }
}

File 4 of 8 : ChainlinkPriceFeed.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./libs/UniswapLib.sol";
import "./IRToken.sol";

contract ChainlinkPriceFeed is Ownable {
    using FixedPoint for *;

    struct TokenConfig {
        address rToken;
        address underlying;
        bytes32 symbolHash;
        uint256 baseUnit;
        address chainlinkPriceFeed;
    }

    struct Observation {
        uint256 timestamp;
        uint256 acc;
    }

    uint256 public constant PRECISION = 1e18;

    mapping(address => TokenConfig) public getTokenConfigFromRToken;
    mapping(bytes32 => address) public getRTokenFromSymbolHash;
    mapping(address => address) public getRTokenFromUnderlying;

    function getUnderlyingPrice(IRToken _rToken) external view returns (uint256) {
        TokenConfig storage config = getTokenConfigFromRToken[address(_rToken)];
         // IronController needs prices in the format: ${raw price} * 1e(36 - baseUnit)
         // Since the prices in this view have 6 decimals, we must scale them by 1e(36 - 6 - baseUnit)
        return 1e18 * getFromChainlink(config.chainlinkPriceFeed) / config.baseUnit;
    }

    function setTokenConfig(
        address _rToken,
        address _underlying,
        string memory _symbol,
        uint256 _decimals,
        address _chainlinkPriceFeed
    ) external onlyOwner {
        require(getRTokenFromUnderlying[_underlying] == address(0), "RToken & underlying existed");
        require(_chainlinkPriceFeed != address(0), "!chainlink");
        bytes32 symbolHash = keccak256(abi.encodePacked(_symbol));

        TokenConfig storage _newToken = getTokenConfigFromRToken[_rToken];
        _newToken.rToken = _rToken;
        _newToken.underlying = _underlying;
        _newToken.baseUnit = 10**_decimals;
        _newToken.symbolHash = symbolHash;
        _newToken.chainlinkPriceFeed = _chainlinkPriceFeed;

        getRTokenFromUnderlying[_newToken.underlying] = _rToken;
        getRTokenFromSymbolHash[_newToken.symbolHash] = _rToken;
    }

    function price(string calldata _symbol) external view returns (uint256) {
        TokenConfig memory config = getTokenConfigBySymbol(_symbol);
        return getFromChainlink(config.chainlinkPriceFeed);
    }

    /**
     * @return price in USD with 6 decimals
     */
    function getFromChainlink(address _chainlinkPriceFeed) internal view returns (uint256) {
        assert(_chainlinkPriceFeed != address(0));
        AggregatorV3Interface _priceFeed = AggregatorV3Interface(_chainlinkPriceFeed);
        (, int256 _price, , , ) = _priceFeed.latestRoundData();
        uint8 _decimals = _priceFeed.decimals();
        return (uint256(_price) * PRECISION) / (10**_decimals);
    }

    function getTokenConfigBySymbolHash(bytes32 _symbolHash) internal view returns (TokenConfig memory) {
        address rToken = getRTokenFromSymbolHash[_symbolHash];
        require(rToken != address(0), "token config not found");
        return getTokenConfigFromRToken[rToken];
    }

    function getTokenConfigBySymbol(string memory symbol) public view returns (TokenConfig memory) {
        bytes32 symbolHash = keccak256(abi.encodePacked(symbol));
        return getTokenConfigBySymbolHash(symbolHash);
    }
}

File 5 of 8 : IRToken.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IRToken {
    function underlying() external returns (address);
}

File 6 of 8 : Babylonian.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

// computes square roots using the babylonian method
// https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

File 7 of 8 : FixedPoint.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.16;

import "./Babylonian.sol";

// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))
library FixedPoint {
    // range: [0, 2**112 - 1]
    // resolution: 1 / 2**112
    struct uq112x112 {
        uint224 _x;
    }

    // range: [0, 2**144 - 1]
    // resolution: 1 / 2**112
    struct uq144x112 {
        uint256 _x;
    }

    uint8 private constant RESOLUTION = 112;
    uint256 private constant Q112 = uint256(1) << RESOLUTION;
    uint256 private constant Q224 = Q112 << RESOLUTION;

    // encode a uint112 as a UQ112x112
    function encode(uint112 x) internal pure returns (uq112x112 memory) {
        return uq112x112(uint224(x) << RESOLUTION);
    }

    // encodes a uint144 as a UQ144x112
    function encode144(uint144 x) internal pure returns (uq144x112 memory) {
        return uq144x112(uint256(x) << RESOLUTION);
    }

    // divide a UQ112x112 by a uint112, returning a UQ112x112
    function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
        require(x != 0, "FixedPoint: DIV_BY_ZERO");
        return uq112x112(self._x / uint224(x));
    }

    // multiply a UQ112x112 by a uint, returning a UQ144x112
    // reverts on overflow
    function mul(uq112x112 memory self, uint256 y) internal pure returns (uq144x112 memory) {
        uint256 z;
        require(y == 0 || (z = uint256(self._x) * y) / y == uint256(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
        return uq144x112(z);
    }

    // returns a UQ112x112 which represents the ratio of the numerator to the denominator
    // equivalent to encode(numerator).div(denominator)
    function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
        require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
        return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
    }

    // decode a UQ112x112 into a uint112 by truncating after the radix point
    function decode(uq112x112 memory self) internal pure returns (uint112) {
        return uint112(self._x >> RESOLUTION);
    }

    // decode a UQ144x112 into a uint144 by truncating after the radix point
    function decode144(uq144x112 memory self) internal pure returns (uint144) {
        return uint144(self._x >> RESOLUTION);
    }

    // take the reciprocal of a UQ112x112
    function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
        require(self._x != 0, "FixedPoint: ZERO_RECIPROCAL");
        return uq112x112(uint224(Q224 / self._x));
    }

    // square root of a UQ112x112
    function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
        return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
    }

    // decode a uq112x112 into a uint with 18 decimals of precision
    function decode112with18(uq112x112 memory self) internal pure returns (uint) {
        // we only have 256 - 224 = 32 bits to spare, so scaling up by ~60 bits is dangerous
        // instead, get close to:
        //  (x * 1e18) >> 112
        // without risk of overflowing, e.g.:
        //  (x) / 2 ** (112 - lg(1e18))
        return uint(self._x) / 5192296858534827;
    }
}

File 8 of 8 : UniswapLib.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.4;

import "./FixedPoint.sol";

// library with helper methods for oracles that are concerned with computing average prices
library UniswapV2OracleLibrary {
    using FixedPoint for *;

    // helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1]
    function currentBlockTimestamp() internal view returns (uint32) {
        return uint32(block.timestamp % 2 ** 32);
    }

    // produces the cumulative price using counterfactuals to save gas and avoid a call to sync.
    function currentCumulativePrices(
        address pair
    ) internal view returns (uint price0Cumulative, uint price1Cumulative, uint32 blockTimestamp) {
        blockTimestamp = currentBlockTimestamp();
        price0Cumulative = IUniswapV2Pair(pair).price0CumulativeLast();
        price1Cumulative = IUniswapV2Pair(pair).price1CumulativeLast();

        // if time has elapsed since the last update on the pair, mock the accumulated price values
        (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast) = IUniswapV2Pair(pair).getReserves();
        if (blockTimestampLast != blockTimestamp) {
            // subtraction overflow is desired
            uint32 timeElapsed = blockTimestamp - blockTimestampLast;
            // addition overflow is desired
            // counterfactual
            price0Cumulative += uint(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed;
            // counterfactual
            price1Cumulative += uint(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed;
        }
    }
}

interface IUniswapV2Pair {
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function token0() external view returns (address);
    function token1() external view returns (address);
}

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

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"PRECISION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"getRTokenFromSymbolHash","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"getRTokenFromUnderlying","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"symbol","type":"string"}],"name":"getTokenConfigBySymbol","outputs":[{"components":[{"internalType":"address","name":"rToken","type":"address"},{"internalType":"address","name":"underlying","type":"address"},{"internalType":"bytes32","name":"symbolHash","type":"bytes32"},{"internalType":"uint256","name":"baseUnit","type":"uint256"},{"internalType":"address","name":"chainlinkPriceFeed","type":"address"}],"internalType":"struct ChainlinkPriceFeed.TokenConfig","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"getTokenConfigFromRToken","outputs":[{"internalType":"address","name":"rToken","type":"address"},{"internalType":"address","name":"underlying","type":"address"},{"internalType":"bytes32","name":"symbolHash","type":"bytes32"},{"internalType":"uint256","name":"baseUnit","type":"uint256"},{"internalType":"address","name":"chainlinkPriceFeed","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IRToken","name":"_rToken","type":"address"}],"name":"getUnderlyingPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_symbol","type":"string"}],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_rToken","type":"address"},{"internalType":"address","name":"_underlying","type":"address"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint256","name":"_decimals","type":"uint256"},{"internalType":"address","name":"_chainlinkPriceFeed","type":"address"}],"name":"setTokenConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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