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•  contract Ownable
•    - function owner()
•    - function isOwner()
•    - function renounceOwnership()
•    - function transferOwnership(address ne ...
•    - function _transferOwnership(address n ...
• interface IPriceOracleGetter
•    - function getAssetPrice(address _asset ...
• interface IChainlinkAggregator
•    - function latestAnswer()
•    - function latestTimestamp()
•    - function latestRound()
•    - function getAnswer(uint256 roundId)
•    - function getTimestamp(uint256 roundId ...
• library EthAddressLib
•    - function ethAddress()
•  contract ChainlinkProxyPriceProvid ... *
•    - function setAssetSources(address[] ca ...
•    - function setFallbackOracle(address _f ...
•    - function internalSetAssetsSources(add ...
•    - function internalSetFallbackOracle(ad ...
•    - function getAssetPrice(address _asset ...
•    - function getAssetsPrices(address[] ca ...
•    - function getSourceOfAsset(address _as ...
•    - function getFallbackOracle()

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/**
 *Submitted for verification at Etherscan.io on 2020-02-18
*/

// File: openzeppelin-solidity/contracts/ownership/Ownable.sol

pragma solidity ^0.5.0;

/**
 * @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.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be aplied to your functions to restrict their use to
 * the owner.
 */
contract Ownable {
    address private _owner;

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

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

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

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

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return msg.sender == _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 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 onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: contracts/interfaces/IPriceOracleGetter.sol

pragma solidity ^0.5.0;

/**
* @title IPriceOracleGetter interface
* @notice Interface for the Aave price oracle.
**/

interface IPriceOracleGetter {
    /**
    * @dev returns the asset price in ETH
    * @param _asset the address of the asset
    * @return the ETH price of the asset
    **/
    function getAssetPrice(address _asset) external view returns (uint256);
}

// File: contracts/interfaces/IChainlinkAggregator.sol

pragma solidity ^0.5.0;

interface IChainlinkAggregator {
  function latestAnswer() external view returns (int256);
  function latestTimestamp() external view returns (uint256);
  function latestRound() external view returns (uint256);
  function getAnswer(uint256 roundId) external view returns (int256);
  function getTimestamp(uint256 roundId) external view returns (uint256);

  event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 timestamp);
  event NewRound(uint256 indexed roundId, address indexed startedBy);
}

// File: contracts/libraries/EthAddressLib.sol

pragma solidity ^0.5.0;

library EthAddressLib {

    /**
    * @dev returns the address used within the protocol to identify ETH
    * @return the address assigned to ETH
     */
    function ethAddress() internal pure returns(address) {
        return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    }
}

// File: contracts/misc/ChainlinkProxyPriceProvider.sol

pragma solidity ^0.5.0;





/// @title ChainlinkProxyPriceProvider
/// @author Aave
/// @notice Proxy smart contract to get the price of an asset from a price source, with Chainlink Aggregator
///         smart contracts as primary option
/// - If the returned price by a Chainlink aggregator is <= 0, the call is forwarded to a fallbackOracle
/// - Owned by the Aave governance system, allowed to add sources for assets, replace them
///   and change the fallbackOracle
contract ChainlinkProxyPriceProvider is IPriceOracleGetter, Ownable {

    event AssetSourceUpdated(address indexed asset, address indexed source);
    event FallbackOracleUpdated(address indexed fallbackOracle);

    mapping(address => IChainlinkAggregator) private assetsSources;
    IPriceOracleGetter private fallbackOracle;

    /// @notice Constructor
    /// @param _assets The addresses of the assets
    /// @param _sources The address of the source of each asset
    /// @param _fallbackOracle The address of the fallback oracle to use if the data of an
    ///        aggregator is not consistent
    constructor(address[] memory _assets, address[] memory _sources, address _fallbackOracle) public {
        internalSetFallbackOracle(_fallbackOracle);
        internalSetAssetsSources(_assets, _sources);
    }

    /// @notice External function called by the Aave governance to set or replace sources of assets
    /// @param _assets The addresses of the assets
    /// @param _sources The address of the source of each asset
    function setAssetSources(address[] calldata _assets, address[] calldata _sources) external onlyOwner {
        internalSetAssetsSources(_assets, _sources);
    }

    /// @notice Sets the fallbackOracle
    /// - Callable only by the Aave governance
    /// @param _fallbackOracle The address of the fallbackOracle
    function setFallbackOracle(address _fallbackOracle) external onlyOwner {
        internalSetFallbackOracle(_fallbackOracle);
    }

    /// @notice Internal function to set the sources for each asset
    /// @param _assets The addresses of the assets
    /// @param _sources The address of the source of each asset
    function internalSetAssetsSources(address[] memory _assets, address[] memory _sources) internal {
        require(_assets.length == _sources.length, "INCONSISTENT_PARAMS_LENGTH");
        for (uint256 i = 0; i < _assets.length; i++) {
            assetsSources[_assets[i]] = IChainlinkAggregator(_sources[i]);
            emit AssetSourceUpdated(_assets[i], _sources[i]);
        }
    }

    /// @notice Internal function to set the fallbackOracle
    /// @param _fallbackOracle The address of the fallbackOracle
    function internalSetFallbackOracle(address _fallbackOracle) internal {
        fallbackOracle = IPriceOracleGetter(_fallbackOracle);
        emit FallbackOracleUpdated(_fallbackOracle);
    }

    /// @notice Gets an asset price by address
    /// @param _asset The asset address
    function getAssetPrice(address _asset) public view returns(uint256) {
        IChainlinkAggregator source = assetsSources[_asset];
        if (_asset == EthAddressLib.ethAddress()) {
            return 1 ether;
        } else {
            // If there is no registered source for the asset, call the fallbackOracle
            if (address(source) == address(0)) {
                return IPriceOracleGetter(fallbackOracle).getAssetPrice(_asset);
            } else {
                int256 _price = IChainlinkAggregator(source).latestAnswer();
                if (_price > 0) {
                    return uint256(_price);
                } else {
                    return IPriceOracleGetter(fallbackOracle).getAssetPrice(_asset);
                }
            }
        }
    }

    /// @notice Gets a list of prices from a list of assets addresses
    /// @param _assets The list of assets addresses
    function getAssetsPrices(address[] calldata _assets) external view returns(uint256[] memory) {
        uint256[] memory prices = new uint256[](_assets.length);
        for (uint256 i = 0; i < _assets.length; i++) {
            prices[i] = getAssetPrice(_assets[i]);
        }
        return prices;
    }

    /// @notice Gets the address of the source for an asset address
    /// @param _asset The address of the asset
    /// @return address The address of the source
    function getSourceOfAsset(address _asset) external view returns(address) {
        return address(assetsSources[_asset]);
    }

    /// @notice Gets the address of the fallback oracle
    /// @return address The addres of the fallback oracle
    function getFallbackOracle() external view returns(address) {
        return address(fallbackOracle);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

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-----Decoded View---------------
Arg [0] : _assets (address[]): 0x6B175474E89094C44Da98b954EedeAC495271d0F,0x0000000000085d4780B73119b644AE5ecd22b376,0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48,0xdAC17F958D2ee523a2206206994597C13D831ec7,0x57Ab1ec28D129707052df4dF418D58a2D46d5f51,0x80fB784B7eD66730e8b1DBd9820aFD29931aab03,0x0D8775F648430679A709E98d2b0Cb6250d2887EF,0x1985365e9f78359a9B6AD760e32412f4a445E862,0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2,0x514910771AF9Ca656af840dff83E8264EcF986CA,0xdd974D5C2e2928deA5F71b9825b8b646686BD200,0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599,0x0F5D2fB29fb7d3CFeE444a200298f468908cC942,0xE41d2489571d322189246DaFA5ebDe1F4699F498,0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F
Arg [1] : _sources (address[]): 0x037E8F2125bF532F3e228991e051c8A7253B642c,0x73ead35fd6A572EF763B13Be65a9db96f7643577,0xdE54467873c3BCAA76421061036053e371721708,0xa874fe207DF445ff19E7482C746C4D3fD0CB9AcE,0x6d626Ff97f0E89F6f983dE425dc5B24A18DE26Ea,0x1EeaF25f2ECbcAf204ECADc8Db7B0db9DA845327,0x9b4e2579895efa2b4765063310Dc4109a7641129,0xb8b513d9cf440C1b6f5C7142120d611C94fC220c,0xDa3d675d50fF6C555973C4f0424964e1F6A4e7D3,0xeCfA53A8bdA4F0c4dd39c55CC8deF3757aCFDD07,0xd0e785973390fF8E77a83961efDb4F271E6B8152,0x0133Aa47B6197D0BA090Bf2CD96626Eb71fFd13c,0xc89c4ed8f52Bb17314022f6c0dCB26210C905C97,0xA0F9D94f060836756FFC84Db4C78d097cA8C23E8,0xE23d1142dE4E83C08bb048bcab54d50907390828
Arg [2] : _fallbackOracle (address): 0xF67A8b0E3E0Ee303422f78b4C5b8dA60dF80A59C

-----Encoded View---------------
35 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000260
Arg [2] : 000000000000000000000000f67a8b0e3e0ee303422f78b4c5b8da60df80a59c
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [4] : 0000000000000000000000006b175474e89094c44da98b954eedeac495271d0f
Arg [5] : 0000000000000000000000000000000000085d4780b73119b644ae5ecd22b376
Arg [6] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [7] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7
Arg [8] : 00000000000000000000000057ab1ec28d129707052df4df418d58a2d46d5f51
Arg [9] : 00000000000000000000000080fb784b7ed66730e8b1dbd9820afd29931aab03
Arg [10] : 0000000000000000000000000d8775f648430679a709e98d2b0cb6250d2887ef
Arg [11] : 0000000000000000000000001985365e9f78359a9b6ad760e32412f4a445e862
Arg [12] : 0000000000000000000000009f8f72aa9304c8b593d555f12ef6589cc3a579a2
Arg [13] : 000000000000000000000000514910771af9ca656af840dff83e8264ecf986ca
Arg [14] : 000000000000000000000000dd974d5c2e2928dea5f71b9825b8b646686bd200
Arg [15] : 0000000000000000000000002260fac5e5542a773aa44fbcfedf7c193bc2c599
Arg [16] : 0000000000000000000000000f5d2fb29fb7d3cfee444a200298f468908cc942
Arg [17] : 000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498
Arg [18] : 000000000000000000000000c011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f
Arg [19] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [20] : 000000000000000000000000037e8f2125bf532f3e228991e051c8a7253b642c
Arg [21] : 00000000000000000000000073ead35fd6a572ef763b13be65a9db96f7643577
Arg [22] : 000000000000000000000000de54467873c3bcaa76421061036053e371721708
Arg [23] : 000000000000000000000000a874fe207df445ff19e7482c746c4d3fd0cb9ace
Arg [24] : 0000000000000000000000006d626ff97f0e89f6f983de425dc5b24a18de26ea
Arg [25] : 0000000000000000000000001eeaf25f2ecbcaf204ecadc8db7b0db9da845327
Arg [26] : 0000000000000000000000009b4e2579895efa2b4765063310dc4109a7641129
Arg [27] : 000000000000000000000000b8b513d9cf440c1b6f5c7142120d611c94fc220c
Arg [28] : 000000000000000000000000da3d675d50ff6c555973c4f0424964e1f6a4e7d3
Arg [29] : 000000000000000000000000ecfa53a8bda4f0c4dd39c55cc8def3757acfdd07
Arg [30] : 000000000000000000000000d0e785973390ff8e77a83961efdb4f271e6b8152
Arg [31] : 0000000000000000000000000133aa47b6197d0ba090bf2cd96626eb71ffd13c
Arg [32] : 000000000000000000000000c89c4ed8f52bb17314022f6c0dcb26210c905c97
Arg [33] : 000000000000000000000000a0f9d94f060836756ffc84db4c78d097ca8c23e8
Arg [34] : 000000000000000000000000e23d1142de4e83c08bb048bcab54d50907390828

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bzzr://cc0c9190753cba20cea8f02e68f8af86d4cf0d4b2f79bfd550849deecdd80e9e