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Outline

• interface IAaveOracle
•    - function getAssetPrice(address _asset ...
•    - function prophecies(address _asset)
•    - function submitProphecy(address _asse ...
•    - function isSybilWhitelisted(address _ ...
•  contract AaveOracle is IAaveOracle *
•    - function internalWhitelistSybils(addr ...
•    - function submitProphecy(address _asse ...
•    - function getAssetPrice(address _asset ...
•    - function getProphecy(address _asset)
•    - function isSybilWhitelisted(address _ ...

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/**
 *Submitted for verification at Etherscan.io on 2020-03-23
*/

// File: contracts/interfaces/IAaveOracle.sol

pragma solidity ^0.5.0;

interface IAaveOracle {
    // TODO rename back to getOracleProphecy
    function getAssetPrice(address _asset) external view returns (uint256);
    function prophecies(address _asset) external view returns (uint64, uint96, uint96);
    function submitProphecy(address _asset, uint96 _sybilProphecy, uint96 _oracleProphecy) external;
    function isSybilWhitelisted(address _sybil) external view returns (bool);
}

// File: contracts/AaveOracle.sol

pragma solidity ^0.5.0;


contract AaveOracle is IAaveOracle {
    struct TimestampedProphecy {
        uint64 timestamp;
        uint96 sybilProphecy;
        uint96 oracleProphecy;
    }

    event ProphecySubmitted(
        address indexed _sybil,
        address indexed _asset,
        uint96 _sybilProphecy,
        uint96 _oracleProphecy
    );

    event SybilWhitelisted(address sybil);

    // Asset => price prophecy
    mapping(address => TimestampedProphecy) public prophecies;

    // Whitelisted sybils allowed to submit prices
    mapping(address => bool) private sybils;

    modifier onlySybil {
        require(isSybilWhitelisted(msg.sender), "INVALID_SYBIL");
        _;
    }

    constructor(address[] memory _sybils) public {
        internalWhitelistSybils(_sybils);
    }

    /// @notice Internal function to whitelist a list of sybils
    /// @param _sybils The addresses of the sybils
    function internalWhitelistSybils(address[] memory _sybils) internal {
        for (uint256 i = 0; i < _sybils.length; i++) {
            sybils[_sybils[i]] = true;
            emit SybilWhitelisted(_sybils[i]);
        }
    }

    /// @notice Submits a new prophecy for an asset
    /// - Only callable by whitelisted sybils
    /// @param _asset The asset address
    /// @param _sybilProphecy The new individual prophecy of the sybil
    /// @param _oracleProphecy The offchain calculated prophecy from all the currently valid ones
    function submitProphecy(address _asset, uint96 _sybilProphecy, uint96 _oracleProphecy) external onlySybil {
        prophecies[_asset] = TimestampedProphecy(uint64(block.timestamp), _sybilProphecy, _oracleProphecy);
        emit ProphecySubmitted(msg.sender, _asset, _sybilProphecy, _oracleProphecy);
    }

    /// @notice Gets the current prophecy for an asset
    /// @param _asset The asset address
    function getAssetPrice(address _asset) external view returns (uint256) {
        return uint256(prophecies[_asset].oracleProphecy);
    }

    /// @notice Gets the data of the current prophecy for an asset
    /// @param _asset The asset address
    function getProphecy(address _asset) external view returns (uint64, uint96, uint96) {
        TimestampedProphecy memory _prophecy = prophecies[_asset];
        return (_prophecy.timestamp, _prophecy.sybilProphecy, _prophecy.oracleProphecy);
    }

    /// @notice Return a bool with the whitelisting state of a sybil
    /// @param _sybil The address of the sybil
    function isSybilWhitelisted(address _sybil) public view returns (bool) {
        return sybils[_sybil];
    }

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[{"name":"_sybil","type":"address"}],"name":"isSybilWhitelisted","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"prophecies","outputs":[{"name":"timestamp","type":"uint64"},{"name":"sybilProphecy","type":"uint96"},{"name":"oracleProphecy","type":"uint96"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_asset","type":"address"},{"name":"_sybilProphecy","type":"uint96"},{"name":"_oracleProphecy","type":"uint96"}],"name":"submitProphecy","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_asset","type":"address"}],"name":"getAssetPrice","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_asset","type":"address"}],"name":"getProphecy","outputs":[{"name":"","type":"uint64"},{"name":"","type":"uint96"},{"name":"","type":"uint96"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_sybils","type":"address[]"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_sybil","type":"address"},{"indexed":true,"name":"_asset","type":"address"},{"indexed":false,"name":"_sybilProphecy","type":"uint96"},{"indexed":false,"name":"_oracleProphecy","type":"uint96"}],"name":"ProphecySubmitted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sybil","type":"address"}],"name":"SybilWhitelisted","type":"event"}]

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00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000002000000000000000000000000ea7a98133424041461c0784affd708ef7ddc77d90000000000000000000000000f45333725de4059561a2fe7b201ed16f9a7a1da

-----Decoded View---------------
Arg [0] : _sybils (address[]): 0xea7A98133424041461c0784afFD708Ef7dDc77D9,0x0F45333725dE4059561A2Fe7b201ed16f9A7a1da

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [2] : 000000000000000000000000ea7a98133424041461c0784affd708ef7ddc77d9
Arg [3] : 0000000000000000000000000f45333725de4059561a2fe7b201ed16f9a7a1da

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bzzr://e354a63ae2b9d8349aefa4f889af10ac71dd103925c0d2759d5e4af5cb0191fe