// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
pragma abicoder v2;
// SPDX-License-Identifier: GPL-3.0-only
import "@openzeppelin/contracts/math/SafeMath.sol";
import "../RocketBase.sol";
import "../../interface/node/RocketNodeManagerInterface.sol";
import "../../interface/rewards/claims/RocketClaimNodeInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsNodeInterface.sol"; 
import "../../interface/util/AddressSetStorageInterface.sol";
// Node registration and management 
contract RocketNodeManager is RocketBase, RocketNodeManagerInterface {
    // Libraries
    using SafeMath for uint256;
    // Events
    event NodeRegistered(address indexed node, uint256 time);
    event NodeTimezoneLocationSet(address indexed node, uint256 time);
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        version = 1;
    }
    // Get the number of nodes in the network
    function getNodeCount() override external view returns (uint256) {
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        return addressSetStorage.getCount(keccak256(abi.encodePacked("nodes.index")));
    }
    // Get a breakdown of the number of nodes per timezone
    function getNodeCountPerTimezone(uint256 offset, uint256 limit) override external view returns (TimezoneCount[] memory) {
        // Get contracts
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Precompute node key
        bytes32 nodeKey = keccak256(abi.encodePacked("nodes.index"));
        // Calculate range
        uint256 totalNodes = addressSetStorage.getCount(nodeKey);
        uint256 max = offset.add(limit);
        if (max > totalNodes || limit == 0) { max = totalNodes; }
        // Create an array with as many elements as there are potential values to return
        TimezoneCount[] memory counts = new TimezoneCount[](max.sub(offset));
        uint256 uniqueTimezoneCount = 0;
        // Iterate the minipool range
        for (uint256 i = offset; i < max; i++) {
            address nodeAddress = addressSetStorage.getItem(nodeKey, i);
            string memory timezone = getString(keccak256(abi.encodePacked("node.timezone.location", nodeAddress)));
            // Find existing entry in our array
            bool existing = false;
            for (uint256 j = 0; j < uniqueTimezoneCount; j++) {
                if (keccak256(bytes(counts[j].timezone)) == keccak256(bytes(timezone))) {
                    existing = true;
                    // Increment the counter
                    counts[j].count++;
                    break;
                }
            }
            // Entry was not found, so create a new one
            if (!existing) {
                counts[uniqueTimezoneCount].timezone = timezone;
                counts[uniqueTimezoneCount].count = 1;
                uniqueTimezoneCount++;
            }
        }
        // Dirty hack to cut unused elements off end of return value
        assembly {
            mstore(counts, uniqueTimezoneCount)
        }
        return counts;
    }
    // Get a node address by index
    function getNodeAt(uint256 _index) override external view returns (address) {
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        return addressSetStorage.getItem(keccak256(abi.encodePacked("nodes.index")), _index);
    }
    // Check whether a node exists
    function getNodeExists(address _nodeAddress) override external view returns (bool) {
        return getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress)));
    }
    // Get a node's current withdrawal address
    function getNodeWithdrawalAddress(address _nodeAddress) override external view returns (address) {
        return rocketStorage.getNodeWithdrawalAddress(_nodeAddress);
    }
    // Get a node's pending withdrawal address
    function getNodePendingWithdrawalAddress(address _nodeAddress) override external view returns (address) {
        return rocketStorage.getNodePendingWithdrawalAddress(_nodeAddress);
    }
    // Get a node's timezone location
    function getNodeTimezoneLocation(address _nodeAddress) override external view returns (string memory) {
        return getString(keccak256(abi.encodePacked("node.timezone.location", _nodeAddress)));
    }
    // Register a new node with Rocket Pool
    function registerNode(string calldata _timezoneLocation) override external onlyLatestContract("rocketNodeManager", address(this)) {
        // Load contracts
        RocketClaimNodeInterface rocketClaimNode = RocketClaimNodeInterface(getContractAddress("rocketClaimNode"));
        RocketDAOProtocolSettingsNodeInterface rocketDAOProtocolSettingsNode = RocketDAOProtocolSettingsNodeInterface(getContractAddress("rocketDAOProtocolSettingsNode"));
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Check node settings
        require(rocketDAOProtocolSettingsNode.getRegistrationEnabled(), "Rocket Pool node registrations are currently disabled");
        // Check timezone location
        require(bytes(_timezoneLocation).length >= 4, "The timezone location is invalid");
        // Initialise node data
        setBool(keccak256(abi.encodePacked("node.exists", msg.sender)), true);
        setString(keccak256(abi.encodePacked("node.timezone.location", msg.sender)), _timezoneLocation);
        // Add node to index
        addressSetStorage.addItem(keccak256(abi.encodePacked("nodes.index")), msg.sender);
        // Register node for RPL claims
        rocketClaimNode.register(msg.sender, true);
        // Emit node registered event
        emit NodeRegistered(msg.sender, block.timestamp);
    }
    // Set a node's timezone location
    // Only accepts calls from registered nodes
    function setTimezoneLocation(string calldata _timezoneLocation) override external onlyLatestContract("rocketNodeManager", address(this)) onlyRegisteredNode(msg.sender) {
        // Check timezone location
        require(bytes(_timezoneLocation).length >= 4, "The timezone location is invalid");
        // Set timezone location
        setString(keccak256(abi.encodePacked("node.timezone.location", msg.sender)), _timezoneLocation);
        // Emit node timezone location set event
        emit NodeTimezoneLocationSet(msg.sender, block.timestamp);
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsNodeInterface {
    function getRegistrationEnabled() external view returns (bool);
    function getDepositEnabled() external view returns (bool);
    function getMinimumPerMinipoolStake() external view returns (uint256);
    function getMaximumPerMinipoolStake() external view returns (uint256);
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
pragma abicoder v2;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketNodeManagerInterface {
    // Structs
    struct TimezoneCount {
        string timezone;
        uint256 count;
    }
    function getNodeCount() external view returns (uint256);
    function getNodeCountPerTimezone(uint256 offset, uint256 limit) external view returns (TimezoneCount[] memory);
    function getNodeAt(uint256 _index) external view returns (address);
    function getNodeExists(address _nodeAddress) external view returns (bool);
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodeTimezoneLocation(address _nodeAddress) external view returns (string memory);
    function registerNode(string calldata _timezoneLocation) external;
    function setTimezoneLocation(string calldata _timezoneLocation) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketClaimNodeInterface {
    function getEnabled() external view returns (bool);
    function getClaimPossible(address _nodeAddress) external view returns (bool);
    function getClaimRewardsPerc(address _nodeAddress) external view returns (uint256);
    function getClaimRewardsAmount(address _nodeAddress) external view returns (uint256);
    function register(address _nodeAddress, bool _enable) external;
    function claim() external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface AddressSetStorageInterface {
    function getCount(bytes32 _key) external view returns (uint);
    function getItem(bytes32 _key, uint _index) external view returns (address);
    function getIndexOf(bytes32 _key, address _value) external view returns (int);
    function addItem(bytes32 _key, address _value) external;
    function removeItem(bytes32 _key, address _value) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
/// @title The primary persistent storage for Rocket Pool
/// @author David Rugendyke
contract RocketStorage is RocketStorageInterface {
    // Events
    event NodeWithdrawalAddressSet(address indexed node, address indexed withdrawalAddress, uint256 time);
    event GuardianChanged(address oldGuardian, address newGuardian);
    // Libraries
    using SafeMath for uint256;
    // Storage maps
    mapping(bytes32 => string)     private stringStorage;
    mapping(bytes32 => bytes)      private bytesStorage;
    mapping(bytes32 => uint256)    private uintStorage;
    mapping(bytes32 => int256)     private intStorage;
    mapping(bytes32 => address)    private addressStorage;
    mapping(bytes32 => bool)       private booleanStorage;
    mapping(bytes32 => bytes32)    private bytes32Storage;
    // Protected storage (not accessible by network contracts)
    mapping(address => address)    private withdrawalAddresses;
    mapping(address => address)    private pendingWithdrawalAddresses;
    // Guardian address
    address guardian;
    address newGuardian;
    // Flag storage has been initialised
    bool storageInit = false;
    /// @dev Only allow access from the latest version of a contract in the Rocket Pool network after deployment
    modifier onlyLatestRocketNetworkContract() {
        if (storageInit == true) {
            // Make sure the access is permitted to only contracts in our Dapp
            require(booleanStorage[keccak256(abi.encodePacked("contract.exists", msg.sender))], "Invalid or outdated network contract");
        } else {
            // Only Dapp and the guardian account are allowed access during initialisation.
            // tx.origin is only safe to use in this case for deployment since no external contracts are interacted with
            require((
                booleanStorage[keccak256(abi.encodePacked("contract.exists", msg.sender))] || tx.origin == guardian
            ), "Invalid or outdated network contract attempting access during deployment");
        }
        _;
    }
    /// @dev Construct RocketStorage
    constructor() {
        // Set the guardian upon deployment
        guardian = msg.sender;
    }
    // Get guardian address
    function getGuardian() external override view returns (address) {
        return guardian;
    }
    // Transfers guardianship to a new address
    function setGuardian(address _newAddress) external override {
        // Check tx comes from current guardian
        require(msg.sender == guardian, "Is not guardian account");
        // Store new address awaiting confirmation
        newGuardian = _newAddress;
    }
    // Confirms change of guardian
    function confirmGuardian() external override {
        // Check tx came from new guardian address
        require(msg.sender == newGuardian, "Confirmation must come from new guardian address");
        // Store old guardian for event
        address oldGuardian = guardian;
        // Update guardian and clear storage
        guardian = newGuardian;
        delete newGuardian;
        // Emit event
        emit GuardianChanged(oldGuardian, guardian);
    }
    // Set this as being deployed now
    function getDeployedStatus() external override view returns (bool) {
        return storageInit;
    }
    // Set this as being deployed now
    function setDeployedStatus() external {
        // Only guardian can lock this down
        require(msg.sender == guardian, "Is not guardian account");
        // Set it now
        storageInit = true;
    }
    // Protected storage
    // Get a node's withdrawal address
    function getNodeWithdrawalAddress(address _nodeAddress) public override view returns (address) {
        // If no withdrawal address has been set, return the nodes address
        address withdrawalAddress = withdrawalAddresses[_nodeAddress];
        if (withdrawalAddress == address(0)) {
            return _nodeAddress;
        }
        return withdrawalAddress;
    }
    // Get a node's pending withdrawal address
    function getNodePendingWithdrawalAddress(address _nodeAddress) external override view returns (address) {
        return pendingWithdrawalAddresses[_nodeAddress];
    }
    // Set a node's withdrawal address
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external override {
        // Check new withdrawal address
        require(_newWithdrawalAddress != address(0x0), "Invalid withdrawal address");
        // Confirm the transaction is from the node's current withdrawal address
        address withdrawalAddress = getNodeWithdrawalAddress(_nodeAddress);
        require(withdrawalAddress == msg.sender, "Only a tx from a node's withdrawal address can update it");
        // Update immediately if confirmed
        if (_confirm) {
            updateWithdrawalAddress(_nodeAddress, _newWithdrawalAddress);
        }
        // Set pending withdrawal address if not confirmed
        else {
            pendingWithdrawalAddresses[_nodeAddress] = _newWithdrawalAddress;
        }
    }
    // Confirm a node's new withdrawal address
    function confirmWithdrawalAddress(address _nodeAddress) external override {
        // Get node by pending withdrawal address
        require(pendingWithdrawalAddresses[_nodeAddress] == msg.sender, "Confirmation must come from the pending withdrawal address");
        delete pendingWithdrawalAddresses[_nodeAddress];
        // Update withdrawal address
        updateWithdrawalAddress(_nodeAddress, msg.sender);
    }
    // Update a node's withdrawal address
    function updateWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress) private {
        // Set new withdrawal address
        withdrawalAddresses[_nodeAddress] = _newWithdrawalAddress;
        // Emit withdrawal address set event
        emit NodeWithdrawalAddressSet(_nodeAddress, _newWithdrawalAddress, block.timestamp);
    }
    /// @param _key The key for the record
    function getAddress(bytes32 _key) override external view returns (address r) {
        return addressStorage[_key];
    }
    /// @param _key The key for the record
    function getUint(bytes32 _key) override external view returns (uint256 r) {
        return uintStorage[_key];
    }
    /// @param _key The key for the record
    function getString(bytes32 _key) override external view returns (string memory) {
        return stringStorage[_key];
    }
    /// @param _key The key for the record
    function getBytes(bytes32 _key) override external view returns (bytes memory) {
        return bytesStorage[_key];
    }
    /// @param _key The key for the record
    function getBool(bytes32 _key) override external view returns (bool r) {
        return booleanStorage[_key];
    }
    /// @param _key The key for the record
    function getInt(bytes32 _key) override external view returns (int r) {
        return intStorage[_key];
    }
    /// @param _key The key for the record
    function getBytes32(bytes32 _key) override external view returns (bytes32 r) {
        return bytes32Storage[_key];
    }
    /// @param _key The key for the record
    function setAddress(bytes32 _key, address _value) onlyLatestRocketNetworkContract override external {
        addressStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setUint(bytes32 _key, uint _value) onlyLatestRocketNetworkContract override external {
        uintStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setString(bytes32 _key, string calldata _value) onlyLatestRocketNetworkContract override external {
        stringStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setBytes(bytes32 _key, bytes calldata _value) onlyLatestRocketNetworkContract override external {
        bytesStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setBool(bytes32 _key, bool _value) onlyLatestRocketNetworkContract override external {
        booleanStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setInt(bytes32 _key, int _value) onlyLatestRocketNetworkContract override external {
        intStorage[_key] = _value;
    }
    /// @param _key The key for the record
    function setBytes32(bytes32 _key, bytes32 _value) onlyLatestRocketNetworkContract override external {
        bytes32Storage[_key] = _value;
    }
    /// @param _key The key for the record
    function deleteAddress(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete addressStorage[_key];
    }
    /// @param _key The key for the record
    function deleteUint(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete uintStorage[_key];
    }
    /// @param _key The key for the record
    function deleteString(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete stringStorage[_key];
    }
    /// @param _key The key for the record
    function deleteBytes(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete bytesStorage[_key];
    }
    /// @param _key The key for the record
    function deleteBool(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete booleanStorage[_key];
    }
    /// @param _key The key for the record
    function deleteInt(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete intStorage[_key];
    }
    /// @param _key The key for the record
    function deleteBytes32(bytes32 _key) onlyLatestRocketNetworkContract override external {
        delete bytes32Storage[_key];
    }
    /// @param _key The key for the record
    /// @param _amount An amount to add to the record's value
    function addUint(bytes32 _key, uint256 _amount) onlyLatestRocketNetworkContract override external {
        uintStorage[_key] = uintStorage[_key].add(_amount);
    }
    /// @param _key The key for the record
    /// @param _amount An amount to subtract from the record's value
    function subUint(bytes32 _key, uint256 _amount) onlyLatestRocketNetworkContract override external {
        uintStorage[_key] = uintStorage[_key].sub(_amount);
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}

/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../../../RocketBase.sol";
import "../../../../interface/dao/protocol/settings/RocketDAOProtocolSettingsInterface.sol";
// Settings in RP which the DAO will have full control over
// This settings contract enables storage using setting paths with namespaces, rather than explicit set methods
abstract contract RocketDAOProtocolSettings is RocketBase, RocketDAOProtocolSettingsInterface {
    // The namespace for a particular group of settings
    bytes32 settingNameSpace;
    // Only allow updating from the DAO proposals contract
    modifier onlyDAOProtocolProposal() {
        // If this contract has been initialised, only allow access from the proposals contract
        if(getBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")))) require(getContractAddress("rocketDAOProtocolProposals") == msg.sender, "Only DAO Protocol Proposals contract can update a setting");
        _;
    }
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress, string memory _settingNameSpace) RocketBase(_rocketStorageAddress) {
        // Apply the setting namespace
        settingNameSpace = keccak256(abi.encodePacked("dao.protocol.setting.", _settingNameSpace));
    }
    /*** Uints  ****************/
    // A general method to return any setting given the setting path is correct, only accepts uints
    function getSettingUint(string memory _settingPath) public view override returns (uint256) {
        return getUint(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a Uint setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingUint(string memory _settingPath, uint256 _value) virtual public override onlyDAOProtocolProposal {
        // Update setting now
        setUint(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    } 
   
    /*** Bools  ****************/
    // A general method to return any setting given the setting path is correct, only accepts bools
    function getSettingBool(string memory _settingPath) public view override returns (bool) {
        return getBool(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingBool(string memory _settingPath, bool _value) virtual public override onlyDAOProtocolProposal {
        // Update setting now
        setBool(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    }
    
    /*** Addresses  ****************/
    // A general method to return any setting given the setting path is correct, only accepts addresses
    function getSettingAddress(string memory _settingPath) external view override returns (address) {
        return getAddress(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingAddress(string memory _settingPath, address _value) virtual external override onlyDAOProtocolProposal {
        // Update setting now
        setAddress(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "./RocketDAOProtocolSettings.sol";
import "../../../../interface/dao/protocol/settings/RocketDAOProtocolSettingsNodeInterface.sol";
// Network auction settings
contract RocketDAOProtocolSettingsNode is RocketDAOProtocolSettings, RocketDAOProtocolSettingsNodeInterface {
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketDAOProtocolSettings(_rocketStorageAddress, "node") {
        // Set version
        version = 1;
        // Initialize settings on deployment
        if(!getBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")))) {
            // Apply settings
            setSettingBool("node.registration.enabled", false);
            setSettingBool("node.deposit.enabled", false);
            setSettingUint("node.per.minipool.stake.minimum", 0.1 ether);      // 10% of user ETH value
            setSettingUint("node.per.minipool.stake.maximum", 1.5 ether);      // 150% of user ETH value
            // Settings initialised
            setBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")), true);
        }
    }
    // Node registrations currently enabled
    function getRegistrationEnabled() override external view returns (bool) {
        return getSettingBool("node.registration.enabled");
    }
    // Node deposits currently enabled
    function getDepositEnabled() override external view returns (bool) {
        return getSettingBool("node.deposit.enabled");
    }
    // Minimum RPL stake per minipool as a fraction of assigned user ETH value
    function getMinimumPerMinipoolStake() override external view returns (uint256) {
        return getSettingUint("node.per.minipool.stake.minimum");
    }
    // Maximum RPL stake per minipool as a fraction of assigned user ETH value
    function getMaximumPerMinipoolStake() override external view returns (uint256) {
        return getSettingUint("node.per.minipool.stake.maximum");
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsInterface {
    function getSettingUint(string memory _settingPath) external view returns (uint256);
    function setSettingUint(string memory _settingPath, uint256 _value) external;
    function getSettingBool(string memory _settingPath) external view returns (bool);
    function setSettingBool(string memory _settingPath, bool _value) external;
    function getSettingAddress(string memory _settingPath) external view returns (address);
    function setSettingAddress(string memory _settingPath, address _value) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsNodeInterface {
    function getRegistrationEnabled() external view returns (bool);
    function getDepositEnabled() external view returns (bool);
    function getMinimumPerMinipoolStake() external view returns (uint256);
    function getMaximumPerMinipoolStake() external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../RocketBase.sol";
import "../../interface/util/AddressSetStorageInterface.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
// Address set storage helper for RocketStorage data (contains unique items; has reverse index lookups)
contract AddressSetStorage is RocketBase, AddressSetStorageInterface {
    using SafeMath for uint;
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        version = 1;
    }
    // The number of items in a set
    function getCount(bytes32 _key) override external view returns (uint) {
        return getUint(keccak256(abi.encodePacked(_key, ".count")));
    }
    // The item in a set by index
    function getItem(bytes32 _key, uint _index) override external view returns (address) {
        return getAddress(keccak256(abi.encodePacked(_key, ".item", _index)));
    }
    // The index of an item in a set
    // Returns -1 if the value is not found
    function getIndexOf(bytes32 _key, address _value) override external view returns (int) {
        return int(getUint(keccak256(abi.encodePacked(_key, ".index", _value)))) - 1;
    }
    // Add an item to a set
    // Requires that the item does not exist in the set
    function addItem(bytes32 _key, address _value) override external onlyLatestContract("addressSetStorage", address(this)) onlyLatestNetworkContract {
        require(getUint(keccak256(abi.encodePacked(_key, ".index", _value))) == 0, "Item already exists in set");
        uint count = getUint(keccak256(abi.encodePacked(_key, ".count")));
        setAddress(keccak256(abi.encodePacked(_key, ".item", count)), _value);
        setUint(keccak256(abi.encodePacked(_key, ".index", _value)), count.add(1));
        setUint(keccak256(abi.encodePacked(_key, ".count")), count.add(1));
    }
    // Remove an item from a set
    // Swaps the item with the last item in the set and truncates it; computationally cheap
    // Requires that the item exists in the set
    function removeItem(bytes32 _key, address _value) override external onlyLatestContract("addressSetStorage", address(this)) onlyLatestNetworkContract {
        uint256 index = getUint(keccak256(abi.encodePacked(_key, ".index", _value)));
        require(index-- > 0, "Item does not exist in set");
        uint count = getUint(keccak256(abi.encodePacked(_key, ".count")));
        if (index < count.sub(1)) {
            address lastItem = getAddress(keccak256(abi.encodePacked(_key, ".item", count.sub(1))));
            setAddress(keccak256(abi.encodePacked(_key, ".item", index)), lastItem);
            setUint(keccak256(abi.encodePacked(_key, ".index", lastItem)), index.add(1));
        }
        setUint(keccak256(abi.encodePacked(_key, ".index", _value)), 0);
        setUint(keccak256(abi.encodePacked(_key, ".count")), count.sub(1));
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface AddressSetStorageInterface {
    function getCount(bytes32 _key) external view returns (uint);
    function getItem(bytes32 _key, uint _index) external view returns (address);
    function getIndexOf(bytes32 _key, address _value) external view returns (int);
    function addItem(bytes32 _key, address _value) external;
    function removeItem(bytes32 _key, address _value) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "@openzeppelin/contracts/math/SafeMath.sol";
import "../../RocketBase.sol";
import "../../../interface/node/RocketNodeManagerInterface.sol";
import "../../../interface/node/RocketNodeStakingInterface.sol";
import "../../../interface/rewards/RocketRewardsPoolInterface.sol";
import "../../../interface/rewards/claims/RocketClaimNodeInterface.sol";
// RPL Rewards claiming for regular nodes
contract RocketClaimNode is RocketBase, RocketClaimNodeInterface {
    // Libs
    using SafeMath for uint;
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        version = 1;
    }
    // Get whether the contract is enabled for claims
    function getEnabled() override external view returns (bool) {
        RocketRewardsPoolInterface rocketRewardsPool = RocketRewardsPoolInterface(getContractAddress("rocketRewardsPool"));
        return rocketRewardsPool.getClaimingContractEnabled("rocketClaimNode");
    }
    // Get whether a node can make a claim
    function getClaimPossible(address _nodeAddress) override public view onlyRegisteredNode(_nodeAddress) returns (bool) {
        // Load contracts
        RocketRewardsPoolInterface rocketRewardsPool = RocketRewardsPoolInterface(getContractAddress("rocketRewardsPool"));
        RocketNodeStakingInterface rocketNodeStaking = RocketNodeStakingInterface(getContractAddress("rocketNodeStaking"));
        // Return claim possible status
        return (
            rocketRewardsPool.getClaimingContractUserCanClaim("rocketClaimNode", _nodeAddress) &&
            rocketNodeStaking.getNodeRPLStake(_nodeAddress) >= rocketNodeStaking.getNodeMinimumRPLStake(_nodeAddress)
        );
    }
    // Get the share of rewards for a node as a fraction of 1 ether
    function getClaimRewardsPerc(address _nodeAddress) override public view onlyRegisteredNode(_nodeAddress) returns (uint256) {
        // Check node can claim
        if (!getClaimPossible(_nodeAddress)) { return 0; }
        // Load contracts
        RocketNodeStakingInterface rocketNodeStaking = RocketNodeStakingInterface(getContractAddress("rocketNodeStaking"));
        // Calculate and return share
        uint256 totalRplStake = rocketNodeStaking.getTotalEffectiveRPLStake();
        if (totalRplStake == 0) { return 0; }
        return calcBase.mul(rocketNodeStaking.getNodeEffectiveRPLStake(_nodeAddress)).div(totalRplStake);
    }
    // Get the amount of rewards for a node for the reward period
    function getClaimRewardsAmount(address _nodeAddress) override external view onlyRegisteredNode(_nodeAddress) returns (uint256) {
        RocketRewardsPoolInterface rocketRewardsPool = RocketRewardsPoolInterface(getContractAddress("rocketRewardsPool"));
        return rocketRewardsPool.getClaimAmount("rocketClaimNode", _nodeAddress, getClaimRewardsPerc(_nodeAddress));
    }
    // Register or deregister a node for RPL claims
    // Only accepts calls from the RocketNodeManager contract
    function register(address _nodeAddress, bool _enable) override external onlyLatestContract("rocketClaimNode", address(this)) onlyLatestContract("rocketNodeManager", msg.sender) onlyRegisteredNode(_nodeAddress) {
        RocketRewardsPoolInterface rocketRewardsPool = RocketRewardsPoolInterface(getContractAddress("rocketRewardsPool"));
        rocketRewardsPool.registerClaimer(_nodeAddress, _enable);
    }
    // Make an RPL claim
    // Only accepts calls from registered nodes
    function claim() override external onlyLatestContract("rocketClaimNode", address(this)) onlyRegisteredNode(msg.sender) {
        // Check that the node can claim
        require(getClaimPossible(msg.sender), "The node is currently unable to claim");
        // Get node withdrawal address
        RocketNodeManagerInterface rocketNodeManager = RocketNodeManagerInterface(getContractAddress("rocketNodeManager"));
        address nodeWithdrawalAddress = rocketNodeManager.getNodeWithdrawalAddress(msg.sender);
        // Claim RPL
        RocketRewardsPoolInterface rocketRewardsPool = RocketRewardsPoolInterface(getContractAddress("rocketRewardsPool"));
        rocketRewardsPool.claim(msg.sender, nodeWithdrawalAddress, getClaimRewardsPerc(msg.sender));
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
pragma abicoder v2;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketNodeManagerInterface {
    // Structs
    struct TimezoneCount {
        string timezone;
        uint256 count;
    }
    function getNodeCount() external view returns (uint256);
    function getNodeCountPerTimezone(uint256 offset, uint256 limit) external view returns (TimezoneCount[] memory);
    function getNodeAt(uint256 _index) external view returns (address);
    function getNodeExists(address _nodeAddress) external view returns (bool);
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodeTimezoneLocation(address _nodeAddress) external view returns (string memory);
    function registerNode(string calldata _timezoneLocation) external;
    function setTimezoneLocation(string calldata _timezoneLocation) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketNodeStakingInterface {
    function getTotalRPLStake() external view returns (uint256);
    function getNodeRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeRPLStakedTime(address _nodeAddress) external view returns (uint256);
    function getTotalEffectiveRPLStake() external view returns (uint256);
    function calculateTotalEffectiveRPLStake(uint256 offset, uint256 limit, uint256 rplPrice) external view returns (uint256);
    function getNodeEffectiveRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeMinimumRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeMaximumRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeMinipoolLimit(address _nodeAddress) external view returns (uint256);
    function stakeRPL(uint256 _amount) external;
    function withdrawRPL(uint256 _amount) external;
    function slashRPL(address _nodeAddress, uint256 _ethSlashAmount) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketRewardsPoolInterface {
    function getRPLBalance() external view returns(uint256);
    function getClaimIntervalTimeStart() external view returns(uint256);
    function getClaimIntervalTimeStartComputed() external view returns(uint256);
    function getClaimIntervalsPassed() external view returns(uint256);
    function getClaimIntervalTime() external view returns(uint256);
    function getClaimTimeLastMade() external view returns(uint256);
    function getClaimIntervalRewardsTotal() external view returns(uint256);
    function getClaimingContractTotalClaimed(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractUserTotalNext(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractUserTotalCurrent(string memory _claimingContract) external view returns(uint256);  
    function getClaimingContractUserHasClaimed(uint256 _claimIntervalStartTime, string memory _claimingContract, address _claimerAddress) external view returns(bool);
    function getClaimingContractUserCanClaim(string memory _claimingContract, address _claimerAddress) external view returns(bool);
    function getClaimingContractUserRegisteredTime(string memory _claimingContract, address _claimerAddress) external view returns(uint256);
    function getClaimingContractAllowance(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractPerc(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractPercLast(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractExists(string memory _contractName) external view returns (bool);
    function getClaimingContractEnabled(string memory _contractName) external view returns (bool);
    function getClaimAmount(string memory _claimingContract, address _claimerAddress, uint256 _claimerAmountPerc) external view returns (uint256);
    function registerClaimer(address _claimerAddress, bool _enabled) external;
    function claim(address _claimerAddress, address _toAddress, uint256 _claimerAmount) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketClaimNodeInterface {
    function getEnabled() external view returns (bool);
    function getClaimPossible(address _nodeAddress) external view returns (bool);
    function getClaimRewardsPerc(address _nodeAddress) external view returns (uint256);
    function getClaimRewardsAmount(address _nodeAddress) external view returns (uint256);
    function register(address _nodeAddress, bool _enable) external;
    function claim() external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.sol";
/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    uint8 private _decimals;
    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }
    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }
    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return _decimals;
    }
    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }
    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }
    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(sender, recipient, amount);
        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }
    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }
    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }
    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../../utils/Context.sol";
import "./ERC20.sol";
/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    using SafeMath for uint256;
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");
        _approve(account, _msgSender(), decreasedAllowance);
        _burn(account, amount);
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../RocketBase.sol";
import "../../interface/token/RocketTokenRPLInterface.sol";
import "../../interface/rewards/RocketRewardsPoolInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsRewardsInterface.sol";
import "../../interface/RocketVaultInterface.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
// Holds RPL generated by the network for claiming from stakers (node operators etc)
contract RocketRewardsPool is RocketBase, RocketRewardsPoolInterface {
    // Libs
    using SafeMath for uint;
    // Events
    event RPLTokensClaimed(address indexed claimingContract, address indexed claimingAddress, uint256 amount, uint256 time);  
    
    // Modifiers
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool claim contract
    */
    modifier onlyClaimContract() {
        require(getClaimingContractExists(getContractName(msg.sender)), "Not a valid rewards claiming contact");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match an enabled Rocket Pool claim contract
    */
    modifier onlyEnabledClaimContract() {
        require(getClaimingContractEnabled(getContractName(msg.sender)), "Not a valid rewards claiming contact or it has been disabled");
        _;
    }
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        // Version
        version = 1;
        // Set the claim interval start time as the current time
        setUint(keccak256("rewards.pool.claim.interval.time.start"), block.timestamp);
    }
    /**
    * Get how much RPL the Rewards Pool contract currently has assigned to it as a whole
    * @return uint256 Returns rpl balance of rocket rewards contract
    */
    function getRPLBalance() override external view returns(uint256) {
        // Get the vault contract instance
        RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
        // Check per contract
        return rocketVault.balanceOfToken("rocketRewardsPool", IERC20(getContractAddress("rocketTokenRPL")));
    }
    /**
    * Get the last set interval start time
    * @return uint256 Last set start timestamp for a claim interval
    */
    function getClaimIntervalTimeStart() override public view returns(uint256) {
        return getUint(keccak256("rewards.pool.claim.interval.time.start"));
    }
    /**
    * Compute the current start time before a claim is made, takes into account intervals that may have passed
    * @return uint256 Computed starting timestamp for next possible claim
    */
    function getClaimIntervalTimeStartComputed() override public view returns(uint256) {
        // If intervals have passed, a new start timestamp will be used for the next claim, if it's the same interval then return that
        uint256 claimIntervalTimeStart = getClaimIntervalTimeStart();
        uint256 claimIntervalTime = getClaimIntervalTime();
        return _getClaimIntervalTimeStartComputed(claimIntervalTimeStart, claimIntervalTime);
    }
    function _getClaimIntervalTimeStartComputed(uint256 _claimIntervalTimeStart, uint256 _claimIntervalTime) private view returns (uint256) {
        uint256 claimIntervalsPassed = _getClaimIntervalsPassed(_claimIntervalTimeStart, _claimIntervalTime);
        return claimIntervalsPassed == 0 ? _claimIntervalTimeStart : _claimIntervalTimeStart.add(_claimIntervalTime.mul(claimIntervalsPassed));
    }
    /**
    * Compute intervals since last claim period
    * @return uint256 Time intervals since last update
    */
    function getClaimIntervalsPassed() override public view returns(uint256) {
        // Calculate now if inflation has begun
        return _getClaimIntervalsPassed(getClaimIntervalTimeStart(), getClaimIntervalTime());
    }
    function _getClaimIntervalsPassed(uint256 _claimIntervalTimeStart, uint256 _claimIntervalTime) private view returns (uint256) {
        return block.timestamp.sub(_claimIntervalTimeStart).div(_claimIntervalTime);
    }
    /**
    * Get how many seconds in a claim interval
    * @return uint256 Number of seconds in a claim interval
    */
    function getClaimIntervalTime() override public view returns(uint256) {
        // Get from the DAO settings
        RocketDAOProtocolSettingsRewardsInterface daoSettingsRewards = RocketDAOProtocolSettingsRewardsInterface(getContractAddress("rocketDAOProtocolSettingsRewards"));
        return daoSettingsRewards.getRewardsClaimIntervalTime();
    }
    /**
    * Get the last time a claim was made
    * @return uint256 Last time a claim was made
    */
    function getClaimTimeLastMade() override external view returns(uint256) {
        return getUint(keccak256("rewards.pool.claim.interval.time.last"));
    }
    // Check whether a claiming contract exists
    function getClaimingContractExists(string memory _contractName) override public view returns (bool) {
        RocketDAOProtocolSettingsRewardsInterface daoSettingsRewards = RocketDAOProtocolSettingsRewardsInterface(getContractAddress("rocketDAOProtocolSettingsRewards"));
        return (daoSettingsRewards.getRewardsClaimerPercTimeUpdated(_contractName) > 0);
    }
    // If the claiming contact has a % allocated to it higher than 0, it can claim
    function getClaimingContractEnabled(string memory _contractName) override public view returns (bool) {
        // Load contract
        RocketDAOProtocolSettingsRewardsInterface daoSettingsRewards = RocketDAOProtocolSettingsRewardsInterface(getContractAddress("rocketDAOProtocolSettingsRewards"));
        // Now verify this contract can claim by having a claim perc > 0 
        return daoSettingsRewards.getRewardsClaimerPerc(_contractName) > 0 ? true : false;
    }
    
    /**
    * The current claim amount total for this interval per claiming contract
    * @return uint256 The current claim amount for this interval for the claiming contract
    */
    function getClaimingContractTotalClaimed(string memory _claimingContract) override external view returns(uint256) {
        return _getClaimingContractTotalClaimed(_claimingContract, getClaimIntervalTimeStartComputed());
    }
    function _getClaimingContractTotalClaimed(string memory _claimingContract, uint256 _claimIntervalTimeStartComputed) private view returns(uint256) {
        return getUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.total", _claimIntervalTimeStartComputed, _claimingContract)));
    }
    
    /**
    * Have they claimed already during this interval? 
    * @return bool Returns true if they can claim during this interval
    */
    function getClaimingContractUserHasClaimed(uint256 _claimIntervalStartTime, string memory _claimingContract, address _claimerAddress) override public view returns(bool) {
        // Check per contract
        return getBool(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimer.address", _claimIntervalStartTime, _claimingContract, _claimerAddress)));
    }
    /**
    * Get the time this account registered as a claimer at
    * @return uint256 Returns the time the account was registered at
    */
    function getClaimingContractUserRegisteredTime(string memory _claimingContract, address _claimerAddress) override public view returns(uint256) {
        return getUint(keccak256(abi.encodePacked("rewards.pool.claim.contract.registered.time", _claimingContract, _claimerAddress)));
    }
    
    /**
    * Get whether this address can currently make a claim
    * @return bool Returns true if the _claimerAddress can make a claim
    */
    function getClaimingContractUserCanClaim(string memory _claimingContract, address _claimerAddress) override public view returns(bool) {
        return _getClaimingContractUserCanClaim(_claimingContract, _claimerAddress, getClaimIntervalTime());
    }
    function _getClaimingContractUserCanClaim(string memory _claimingContract, address _claimerAddress, uint256 _claimIntervalTime) private view returns(bool) {
        // Get the time they registered at
        uint256 registeredTime = getClaimingContractUserRegisteredTime(_claimingContract, _claimerAddress);
        // If it's 0 or hasn't passed one interval yet, they can't claim
        return registeredTime > 0 && registeredTime.add(_claimIntervalTime) <= block.timestamp && getClaimingContractPerc(_claimingContract) > 0 ? true : false;
    }
    /**
    * Get the number of claimers for the current interval per claiming contract
    * @return uint256 Returns number of claimers for the current interval per claiming contract
    */
    function getClaimingContractUserTotalCurrent(string memory _claimingContract) override external view returns(uint256) {
        // Return the current interval amount if in that interval, if we are moving to the next one upon next claim, use that
        return getClaimIntervalsPassed() == 0 ? getUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimers.total.current", _claimingContract))) : getClaimingContractUserTotalNext(_claimingContract);
    }
    /**
    * Get the number of claimers that will be added/removed on the next interval
    * @return uint256 Returns the number of claimers that will be added/removed on the next interval
    */
    function getClaimingContractUserTotalNext(string memory _claimingContract) override public view returns(uint256) {
        return getUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimers.total.next", _claimingContract)));
    }
    /**
    * Get contract claiming percentage last recorded
    * @return uint256 Returns the contract claiming percentage last recorded
    */
    function getClaimingContractPercLast(string memory _claimingContract) override public view returns(uint256) {
        return getUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.perc.current", _claimingContract)));
    }
   
    /**
    * Get the approx amount of rewards available for this claim interval
    * @return uint256 Rewards amount for current claim interval
    */
    function getClaimIntervalRewardsTotal() override public view returns(uint256) {
        // Get the RPL contract instance
        RocketTokenRPLInterface rplContract = RocketTokenRPLInterface(getContractAddress("rocketTokenRPL"));
        // Get the vault contract instance
        RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
        // Rewards amount
        uint256 rewardsTotal = 0;
        // Is this the first claim of this interval? If so, calculate expected inflation RPL + any RPL already in the pool
        if(getClaimIntervalsPassed() > 0) {
            // Get the balance of tokens that will be transferred to the vault for this contract when the first claim is made
            // Also account for any RPL tokens already in the vault for the rewards pool
            rewardsTotal = rplContract.inflationCalculate().add(rocketVault.balanceOfToken("rocketRewardsPool", IERC20(getContractAddress("rocketTokenRPL"))));
        }else{
            // Claims have already been made, lets retrieve rewards total stored on first claim of this interval
            rewardsTotal = getUint(keccak256("rewards.pool.claim.interval.total"));
        }
        // Done
        return rewardsTotal;
    }
    /**
    * Get the percentage this contract can claim in this interval
    * @return uint256 Rewards percentage this contract can claim in this interval
    */
    function getClaimingContractPerc(string memory _claimingContract) override public view returns(uint256) {
        // Load contract
        RocketDAOProtocolSettingsRewardsInterface daoSettingsRewards = RocketDAOProtocolSettingsRewardsInterface(getContractAddress("rocketDAOProtocolSettingsRewards"));
        // Get the % amount allocated to this claim contract
        uint256 claimContractPerc = daoSettingsRewards.getRewardsClaimerPerc(_claimingContract);
        // Get the time the % was changed at, it will only use this % on the next interval
        if(daoSettingsRewards.getRewardsClaimerPercTimeUpdated(_claimingContract) > getClaimIntervalTimeStartComputed()) {
            // Ok so this percentage was set during this interval, we must use the current % assigned to the last claim and the new one will kick in the next interval
            // If this is 0, the contract hasn't made a claim yet and can only do so on the next interval
            claimContractPerc = getClaimingContractPercLast(_claimingContract);
        }
        // Done
        return claimContractPerc;
    }
    /**
    * Get the approx amount of rewards available for this claim interval per claiming contract
    * @return uint256 Rewards amount for current claim interval per claiming contract
    */
    function getClaimingContractAllowance(string memory _claimingContract) override public view returns(uint256) {
        // Get the % amount this claim contract will get
        uint256 claimContractPerc = getClaimingContractPerc(_claimingContract);
        // How much rewards are available for this claim interval?
        uint256 claimIntervalRewardsTotal = getClaimIntervalRewardsTotal();
        // How much this claiming contract is entitled to in perc
        uint256 contractClaimTotal = 0;
        // Check now
        if(claimContractPerc > 0 && claimIntervalRewardsTotal > 0)  {
            // Calculate how much rewards this claimer will receive based on their claiming perc
            contractClaimTotal = claimContractPerc.mul(claimIntervalRewardsTotal).div(calcBase);
        }
        // Done
        return contractClaimTotal;
    }
    
    // How much this claimer is entitled to claim, checks parameters that claim() will check
    function getClaimAmount(string memory _claimingContract, address _claimerAddress, uint256 _claimerAmountPerc) override external view returns (uint256) {
        if (!getClaimingContractUserCanClaim(_claimingContract, _claimerAddress)) {
            return 0;
        }
        uint256 claimIntervalTimeStartComptued = getClaimIntervalTimeStartComputed();
        uint256 claimingContractTotalClaimed = _getClaimingContractTotalClaimed(_claimingContract, claimIntervalTimeStartComptued);
        return _getClaimAmount(_claimingContract, _claimerAddress, _claimerAmountPerc, claimIntervalTimeStartComptued, claimingContractTotalClaimed);
    }
    function _getClaimAmount(string memory _claimingContract, address _claimerAddress, uint256 _claimerAmountPerc, uint256 _claimIntervalTimeStartComputed, uint256 _claimingContractTotalClaimed) private view returns (uint256) {
        // Get the total rewards available for this claiming contract
        uint256 contractClaimTotal = getClaimingContractAllowance(_claimingContract);
        // How much of the above that this claimer will receive
        uint256 claimerTotal = 0;
        // Are we good to proceed?
        if( contractClaimTotal > 0 &&
            _claimerAmountPerc > 0 &&
            _claimerAmountPerc <= 1 ether &&
            _claimerAddress != address(0x0) &&
            getClaimingContractEnabled(_claimingContract) &&
            !getClaimingContractUserHasClaimed(_claimIntervalTimeStartComputed, _claimingContract, _claimerAddress)) {
            // Now calculate how much this claimer would receive
            claimerTotal = _claimerAmountPerc.mul(contractClaimTotal).div(calcBase);
            // Is it more than currently available + the amount claimed already for this claim interval?
            claimerTotal = claimerTotal.add(_claimingContractTotalClaimed) <= contractClaimTotal ? claimerTotal : 0;
        }
        // Done
        return claimerTotal;
    }
    // An account must be registered to claim from the rewards pool. They must wait one claim interval before they can collect.
    // Also keeps track of total 
    function registerClaimer(address _claimerAddress, bool _enabled) override external onlyClaimContract { 
        // The name of the claiming contract
        string memory contractName = getContractName(msg.sender);
        // Record the time they are registering at
        uint256 registeredTime = 0;
        // How many users are to be included in next interval
        uint256 claimersIntervalTotalUpdate = getClaimingContractUserTotalNext(contractName);
        // Ok register
        if(_enabled) { 
            // Make sure they are not already registered
            require(getClaimingContractUserRegisteredTime(contractName, _claimerAddress) == 0, "Claimer is already registered");
            // Update time
            registeredTime = block.timestamp;
            // Update the total registered claimers for next interval
            setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimers.total.next", contractName)), claimersIntervalTotalUpdate.add(1));
        }else{
            // Make sure they are already registered
            require(getClaimingContractUserRegisteredTime(contractName, _claimerAddress) != 0, "Claimer is not registered");
            // Update the total registered claimers for next interval
            setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimers.total.next", contractName)), claimersIntervalTotalUpdate.sub(1));
        }
        // Save the registered time
        setUint(keccak256(abi.encodePacked("rewards.pool.claim.contract.registered.time", contractName, _claimerAddress)), registeredTime);
    }
    // A claiming contract claiming for a user and the percentage of the rewards they are allowed to receive
    function claim(address _claimerAddress, address _toAddress, uint256 _claimerAmountPerc) override external onlyEnabledClaimContract {
        // The name of the claiming contract
        string memory contractName = getContractName(msg.sender);
        // Check to see if this registered claimer has waited one interval before collecting
        uint256 claimIntervalTime = getClaimIntervalTime();
        require(_getClaimingContractUserCanClaim(contractName, _claimerAddress, claimIntervalTime), "Registered claimer is not registered to claim or has not waited one claim interval");
        // RPL contract address
        address rplContractAddress = getContractAddress("rocketTokenRPL");
        // RPL contract instance
        RocketTokenRPLInterface rplContract = RocketTokenRPLInterface(rplContractAddress);
        // Get the vault contract instance
        RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
        // Get the start of the last claim interval as this may have just changed for a new interval beginning
        uint256 claimIntervalTimeStart = getClaimIntervalTimeStart();
        uint256 claimIntervalTimeStartComputed = _getClaimIntervalTimeStartComputed(claimIntervalTimeStart, claimIntervalTime);
        uint256 claimIntervalsPassed = _getClaimIntervalsPassed(claimIntervalTimeStart, claimIntervalTime);
        // Is this the first claim of this interval? If so, set the rewards total for this interval
        if (claimIntervalsPassed > 0) {
            // Mint any new tokens from the RPL inflation
            rplContract.inflationMintTokens();
            // Get how many tokens are in the reward pool to be available for this claim period
            setUint(keccak256("rewards.pool.claim.interval.total"), rocketVault.balanceOfToken("rocketRewardsPool", rplContract));
            // Set this as the start of the new claim interval
            setUint(keccak256("rewards.pool.claim.interval.time.start"), claimIntervalTimeStartComputed);
            // Soon as we mint new tokens, send the DAO's share to it's claiming contract, then attempt to transfer them to the dao if possible
            uint256 daoClaimContractAllowance = getClaimingContractAllowance("rocketClaimDAO");
            // Are we sending any?
            if (daoClaimContractAllowance > 0) {
                // Get the DAO claim contract address
                address daoClaimContractAddress = getContractAddress("rocketClaimDAO");
                // Transfers the DAO's tokens to it's claiming contract from the rewards pool
                rocketVault.transferToken("rocketClaimDAO", rplContract, daoClaimContractAllowance);
                // Set the current claim percentage this contract is entitled to for this interval
                setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.perc.current", "rocketClaimDAO")), getClaimingContractPerc("rocketClaimDAO"));
                // Store the total RPL rewards claim for this claiming contract in this interval
                setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.total", claimIntervalTimeStartComputed, "rocketClaimDAO")), _getClaimingContractTotalClaimed("rocketClaimDAO", claimIntervalTimeStartComputed).add(daoClaimContractAllowance));
                // Log it
                emit RPLTokensClaimed(daoClaimContractAddress, daoClaimContractAddress, daoClaimContractAllowance, block.timestamp);
            }
        }
        // Has anyone claimed from this contract so far in this interval? If not then set the interval settings for the contract
        if (_getClaimingContractTotalClaimed(contractName, claimIntervalTimeStartComputed) == 0) {
            // Get the amount allocated to this claim contract
            uint256 claimContractAllowance = getClaimingContractAllowance(contractName);
            // Make sure this is ok
            require(claimContractAllowance > 0, "Claiming contract must have an allowance of more than 0");
            // Set the current claim percentage this contract is entitled too for this interval
            setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.perc.current", contractName)), getClaimingContractPerc(contractName));
            // Set the current claim allowance amount for this contract for this claim interval (if the claim amount is changed, it will kick in on the next interval)
            setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.allowance", contractName)), claimContractAllowance);
            // Set the current amount of claimers for this interval
            setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimers.total.current", contractName)), getClaimingContractUserTotalNext(contractName));
        }
        // Check if they have a valid claim amount
        uint256 claimingContractTotalClaimed = _getClaimingContractTotalClaimed(contractName, claimIntervalTimeStartComputed);
        uint256 claimAmount = _getClaimAmount(contractName, _claimerAddress, _claimerAmountPerc, claimIntervalTimeStartComputed, claimingContractTotalClaimed);
        // First initial checks
        require(claimAmount > 0, "Claimer is not entitled to tokens, they have already claimed in this interval or they are claiming more rewards than available to this claiming contract.");
        // Send tokens now
        rocketVault.withdrawToken(_toAddress, rplContract, claimAmount);
        // Store the claiming record for this interval and claiming contract
        setBool(keccak256(abi.encodePacked("rewards.pool.claim.interval.claimer.address", claimIntervalTimeStartComputed, contractName, _claimerAddress)), true);
        // Store the total RPL rewards claim for this claiming contract in this interval
        setUint(keccak256(abi.encodePacked("rewards.pool.claim.interval.contract.total", claimIntervalTimeStartComputed, contractName)), claimingContractTotalClaimed.add(claimAmount));
        // Store the last time a claim was made
        setUint(keccak256("rewards.pool.claim.interval.time.last"), block.timestamp);
        // Log it
        emit RPLTokensClaimed(getContractAddress(contractName), _claimerAddress, claimAmount, block.timestamp);
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol";
interface RocketVaultInterface {
    function balanceOf(string memory _networkContractName) external view returns (uint256);
    function depositEther() external payable;
    function withdrawEther(uint256 _amount) external;
    function depositToken(string memory _networkContractName, IERC20 _tokenAddress, uint256 _amount) external;
    function withdrawToken(address _withdrawalAddress, IERC20 _tokenAddress, uint256 _amount) external;
    function balanceOfToken(string memory _networkContractName, IERC20 _tokenAddress) external view returns (uint256);
    function transferToken(string memory _networkContractName, IERC20 _tokenAddress, uint256 _amount) external;
    function burnToken(ERC20Burnable _tokenAddress, uint256 _amount) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsRewardsInterface {
    function setSettingRewardsClaimer(string memory _contractName, uint256 _perc) external;
    function getRewardsClaimerPerc(string memory _contractName) external view returns (uint256);
    function getRewardsClaimerPercTimeUpdated(string memory _contractName) external view returns (uint256);
    function getRewardsClaimersPercTotal() external view returns (uint256);
    function getRewardsClaimIntervalTime() external view returns (uint256);
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketRewardsPoolInterface {
    function getRPLBalance() external view returns(uint256);
    function getClaimIntervalTimeStart() external view returns(uint256);
    function getClaimIntervalTimeStartComputed() external view returns(uint256);
    function getClaimIntervalsPassed() external view returns(uint256);
    function getClaimIntervalTime() external view returns(uint256);
    function getClaimTimeLastMade() external view returns(uint256);
    function getClaimIntervalRewardsTotal() external view returns(uint256);
    function getClaimingContractTotalClaimed(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractUserTotalNext(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractUserTotalCurrent(string memory _claimingContract) external view returns(uint256);  
    function getClaimingContractUserHasClaimed(uint256 _claimIntervalStartTime, string memory _claimingContract, address _claimerAddress) external view returns(bool);
    function getClaimingContractUserCanClaim(string memory _claimingContract, address _claimerAddress) external view returns(bool);
    function getClaimingContractUserRegisteredTime(string memory _claimingContract, address _claimerAddress) external view returns(uint256);
    function getClaimingContractAllowance(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractPerc(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractPercLast(string memory _claimingContract) external view returns(uint256);
    function getClaimingContractExists(string memory _contractName) external view returns (bool);
    function getClaimingContractEnabled(string memory _contractName) external view returns (bool);
    function getClaimAmount(string memory _claimingContract, address _claimerAddress, uint256 _claimerAmountPerc) external view returns (uint256);
    function registerClaimer(address _claimerAddress, bool _enabled) external;
    function claim(address _claimerAddress, address _toAddress, uint256 _claimerAmount) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface RocketTokenRPLInterface is IERC20 {
    function getInflationCalcTime() external view returns(uint256);
    function getInflationIntervalTime() external view returns(uint256);
    function getInflationIntervalRate() external view returns(uint256);
    function getInflationIntervalsPassed() external view returns(uint256);
    function getInflationIntervalStartTime() external view returns(uint256);
    function getInflationRewardsContractAddress() external view returns(address);
    function inflationCalculate() external view returns (uint256);
    function inflationMintTokens() external returns (uint256);
    function swapTokens(uint256 _amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../interface/RocketStorageInterface.sol";
/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke
abstract contract RocketBase {
    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;
    // Version of the contract
    uint8 public version;
    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(0);
    /*** Modifiers **********************************************************/
    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }
    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    
    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }
    /*** Methods **********************************************************/
    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }
    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }
    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }
    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }
    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }
    /*** Rocket Storage Methods ****************************************/
    // Note: Unused helpers have been removed to keep contract sizes down
    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }
    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }
    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }
    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "../../../RocketBase.sol";
import "../../../../interface/dao/protocol/settings/RocketDAOProtocolSettingsInterface.sol";
// Settings in RP which the DAO will have full control over
// This settings contract enables storage using setting paths with namespaces, rather than explicit set methods
abstract contract RocketDAOProtocolSettings is RocketBase, RocketDAOProtocolSettingsInterface {
    // The namespace for a particular group of settings
    bytes32 settingNameSpace;
    // Only allow updating from the DAO proposals contract
    modifier onlyDAOProtocolProposal() {
        // If this contract has been initialised, only allow access from the proposals contract
        if(getBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")))) require(getContractAddress("rocketDAOProtocolProposals") == msg.sender, "Only DAO Protocol Proposals contract can update a setting");
        _;
    }
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress, string memory _settingNameSpace) RocketBase(_rocketStorageAddress) {
        // Apply the setting namespace
        settingNameSpace = keccak256(abi.encodePacked("dao.protocol.setting.", _settingNameSpace));
    }
    /*** Uints  ****************/
    // A general method to return any setting given the setting path is correct, only accepts uints
    function getSettingUint(string memory _settingPath) public view override returns (uint256) {
        return getUint(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a Uint setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingUint(string memory _settingPath, uint256 _value) virtual public override onlyDAOProtocolProposal {
        // Update setting now
        setUint(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    } 
   
    /*** Bools  ****************/
    // A general method to return any setting given the setting path is correct, only accepts bools
    function getSettingBool(string memory _settingPath) public view override returns (bool) {
        return getBool(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingBool(string memory _settingPath, bool _value) virtual public override onlyDAOProtocolProposal {
        // Update setting now
        setBool(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    }
    
    /*** Addresses  ****************/
    // A general method to return any setting given the setting path is correct, only accepts addresses
    function getSettingAddress(string memory _settingPath) external view override returns (address) {
        return getAddress(keccak256(abi.encodePacked(settingNameSpace, _settingPath)));
    } 
    // Update a setting, can only be executed by the DAO contract when a majority on a setting proposal has passed and been executed
    function setSettingAddress(string memory _settingPath, address _value) virtual external override onlyDAOProtocolProposal {
        // Update setting now
        setAddress(keccak256(abi.encodePacked(settingNameSpace, _settingPath)), _value);
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
import "./RocketDAOProtocolSettings.sol";
import "../../../../interface/dao/protocol/settings/RocketDAOProtocolSettingsRewardsInterface.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
// Settings in RP which the DAO will have full control over
contract RocketDAOProtocolSettingsRewards is RocketDAOProtocolSettings, RocketDAOProtocolSettingsRewardsInterface {
    using SafeMath for uint;
    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketDAOProtocolSettings(_rocketStorageAddress, "rewards") {
        // Set version 
        version = 1;
         // Set some initial settings on first deployment
        if(!getBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")))) {
            // Each of the initial RPL reward claiming contracts
            setSettingRewardsClaimer('rocketClaimDAO', 0.1 ether);                                              // DAO Rewards claim % amount - Percentage given of 1 ether
            setSettingRewardsClaimer('rocketClaimNode', 0.70 ether);                                            // Bonded Node Rewards claim % amount - Percentage given of 1 ether
            setSettingRewardsClaimer('rocketClaimTrustedNode', 0.2 ether);                                      // Trusted Node Rewards claim % amount - Percentage given of 1 ether
            // RPL Claims settings
            setSettingUint("rpl.rewards.claim.period.time", 28 days);                                           // The time in which a claim period will span in seconds - 28 days by default
            // Deployment check
            setBool(keccak256(abi.encodePacked(settingNameSpace, "deployed")), true);                           // Flag that this contract has been deployed, so default settings don't get reapplied on a contract upgrade
        }
    }
    /*** Settings ****************/
    // Set a new claimer for the rpl rewards, must specify a unique contract name that will be claiming from and a percentage of the rewards
    function setSettingRewardsClaimer(string memory _contractName, uint256 _perc) override public onlyDAOProtocolProposal {
        // Get the total perc set, can't be more than 100
        uint256 percTotal = getRewardsClaimersPercTotal();
        // If this group already exists, it will update the perc
        uint256 percTotalUpdate = percTotal.add(_perc).sub(getRewardsClaimerPerc(_contractName));
        // Can't be more than a total claim amount of 100%
        require(percTotalUpdate <= 1 ether, "Claimers cannot total more than 100%");
        // Update the total
        setUint(keccak256(abi.encodePacked(settingNameSpace,"rewards.claims", "group.totalPerc")), percTotalUpdate);
        // Update/Add the claimer amount
        setUint(keccak256(abi.encodePacked(settingNameSpace, "rewards.claims", "group.amount", _contractName)), _perc);
        // Set the time it was updated at
        setUint(keccak256(abi.encodePacked(settingNameSpace, "rewards.claims", "group.amount.updated.time", _contractName)), block.timestamp);
    }
    /*** RPL Claims ***********************************************/
    // RPL Rewards Claimers (own namespace to prevent DAO setting voting to overwrite them)
    // Get the perc amount that this rewards contract get claim
    function getRewardsClaimerPerc(string memory _contractName) override public view returns (uint256) {
        return getUint(keccak256(abi.encodePacked(settingNameSpace, "rewards.claims", "group.amount", _contractName)));
    } 
    // Get the time of when the claim perc was last updated
    function getRewardsClaimerPercTimeUpdated(string memory _contractName) override external view returns (uint256) {
        return getUint(keccak256(abi.encodePacked(settingNameSpace, "rewards.claims", "group.amount.updated.time", _contractName)));
    } 
    // Get the perc amount total for all claimers (remaining goes to DAO)
    function getRewardsClaimersPercTotal() override public view returns (uint256) {
        return getUint(keccak256(abi.encodePacked(settingNameSpace, "rewards.claims", "group.totalPerc")));
    }
    // RPL Rewards General Settings
    // The period over which claims can be made
    function getRewardsClaimIntervalTime() override external view returns (uint256) {
        return getSettingUint("rpl.rewards.claim.period.time");
    }
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketStorageInterface {
    // Deploy status
    function getDeployedStatus() external view returns (bool);
    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;
    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);
    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;
    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;
    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;
    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsInterface {
    function getSettingUint(string memory _settingPath) external view returns (uint256);
    function setSettingUint(string memory _settingPath, uint256 _value) external;
    function getSettingBool(string memory _settingPath) external view returns (bool);
    function setSettingBool(string memory _settingPath, bool _value) external;
    function getSettingAddress(string memory _settingPath) external view returns (address);
    function setSettingAddress(string memory _settingPath, address _value) external;
}
/**
  *       .
  *      / \\
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \\|        | |      | |    | ___ \\         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \\ / __| |/ / _ \\ __|  |  __/ _ \\ / _ \\| |
  *  | |\\ \\ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \\_| \\_\\___/ \\___|_|\\_\\___|\\__|  \\_|  \\___/ \\___/|_|
  * +---------------------------------------------------+
  * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
  *  be community-owned, decentralised, and trustless.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */
pragma solidity 0.7.6;
// SPDX-License-Identifier: GPL-3.0-only
interface RocketDAOProtocolSettingsRewardsInterface {
    function setSettingRewardsClaimer(string memory _contractName, uint256 _perc) external;
    function getRewardsClaimerPerc(string memory _contractName) external view returns (uint256);
    function getRewardsClaimerPercTimeUpdated(string memory _contractName) external view returns (uint256);
    function getRewardsClaimersPercTotal() external view returns (uint256);
    function getRewardsClaimIntervalTime() external view returns (uint256);
}