Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Is this a proxy?
• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2020-10-01
*/

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

pragma solidity ^0.5.2;

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
    address private _owner;

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

    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor () internal {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(isOwner());
        _;
    }

    /**
     * @return true if `msg.sender` is the owner of the contract.
     */
    function isOwner() public view returns (bool) {
        return msg.sender == _owner;
    }

    /**
     * @dev Allows the current owner to relinquish control of the contract.
     * It will not be possible to call the functions with the `onlyOwner`
     * modifier anymore.
     * @notice Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0));
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: contracts/common/misc/ProxyStorage.sol

pragma solidity ^0.5.2;


contract ProxyStorage is Ownable {
    address internal proxyTo;
}

// File: contracts/common/misc/ERCProxy.sol

/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.5.2;

// See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-897.md

interface ERCProxy {
    function proxyType() external pure returns (uint256 proxyTypeId);
    function implementation() external view returns (address codeAddr);
}

// File: contracts/common/misc/DelegateProxy.sol

pragma solidity ^0.5.2;



contract DelegateProxy is ERCProxy {
    function proxyType() external pure returns (uint256 proxyTypeId) {
        // Upgradeable proxy
        proxyTypeId = 2;
    }

    function implementation() external view returns (address);

    function delegatedFwd(address _dst, bytes memory _calldata) internal {
        // solium-disable-next-line security/no-inline-assembly
        assembly {
            let result := delegatecall(
                sub(gas, 10000),
                _dst,
                add(_calldata, 0x20),
                mload(_calldata),
                0,
                0
            )
            let size := returndatasize

            let ptr := mload(0x40)
            returndatacopy(ptr, 0, size)

            // revert instead of invalid() bc if the underlying call failed with invalid() it already wasted gas.
            // if the call returned error data, forward it
            switch result
                case 0 {
                    revert(ptr, size)
                }
                default {
                    return(ptr, size)
                }
        }
    }
}

// File: contracts/common/misc/UpgradableProxy.sol

pragma solidity ^0.5.2;


contract UpgradableProxy is DelegateProxy {
    event ProxyUpdated(address indexed _new, address indexed _old);
    event OwnerUpdate(address _new, address _old);

    bytes32 constant IMPLEMENTATION_SLOT = keccak256("matic.network.proxy.implementation");
    bytes32 constant OWNER_SLOT = keccak256("matic.network.proxy.owner");

    constructor(address _proxyTo) public {
        setOwner(msg.sender);
        setImplementation(_proxyTo);
    }

    function() external payable {
        // require(currentContract != 0, "If app code has not been set yet, do not call");
        // Todo: filter out some calls or handle in the end fallback
        delegatedFwd(loadImplementation(), msg.data);
    }

    modifier onlyProxyOwner() {
        require(loadOwner() == msg.sender, "NOT_OWNER");
        _;
    }

    function owner() external view returns(address) {
        return loadOwner();
    }

    function loadOwner() internal view returns(address) {
        address _owner;
        bytes32 position = OWNER_SLOT;
        assembly {
            _owner := sload(position)
        }
        return _owner;
    }

    function implementation() external view returns (address) {
        return loadImplementation();
    }

    function loadImplementation() internal view returns(address) {
        address _impl;
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            _impl := sload(position)
        }
        return _impl;
    }

    function transferOwnership(address newOwner) public onlyProxyOwner {
        require(newOwner != address(0), "ZERO_ADDRESS");
        emit OwnerUpdate(newOwner, loadOwner());
        setOwner(newOwner);
    }

    function setOwner(address newOwner) private {
        bytes32 position = OWNER_SLOT;
        assembly {
            sstore(position, newOwner)
        }
    }

    function updateImplementation(address _newProxyTo) public onlyProxyOwner {
        require(_newProxyTo != address(0x0), "INVALID_PROXY_ADDRESS");
        require(isContract(_newProxyTo), "DESTINATION_ADDRESS_IS_NOT_A_CONTRACT");

        emit ProxyUpdated(_newProxyTo, loadImplementation());
        
        setImplementation(_newProxyTo);
    }

    function updateAndCall(address _newProxyTo, bytes memory data) payable public onlyProxyOwner {
        updateImplementation(_newProxyTo);

        (bool success, bytes memory returnData) = address(this).call.value(msg.value)(data);
        require(success, string(returnData));
    }

    function setImplementation(address _newProxyTo) private {
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            sstore(position, _newProxyTo)
        }
    }
    
    function isContract(address _target) internal view returns (bool) {
        if (_target == address(0)) {
            return false;
        }

        uint256 size;
        assembly {
            size := extcodesize(_target)
        }
        return size > 0;
    }
}

// File: contracts/common/governance/IGovernance.sol

pragma solidity ^0.5.2;

interface IGovernance {
    function update(address target, bytes calldata data) external;
}

// File: contracts/common/governance/Governable.sol

pragma solidity ^0.5.2;


contract Governable {
    IGovernance public governance;

    constructor(address _governance) public {
        governance = IGovernance(_governance);
    }

    modifier onlyGovernance() {
        require(
            msg.sender == address(governance),
            "Only governance contract is authorized"
        );
        _;
    }
}

// File: contracts/root/withdrawManager/IWithdrawManager.sol

pragma solidity ^0.5.2;

contract IWithdrawManager {
    function createExitQueue(address token) external;

    function verifyInclusion(
        bytes calldata data,
        uint8 offset,
        bool verifyTxInclusion
    ) external view returns (uint256 age);

    function addExitToQueue(
        address exitor,
        address childToken,
        address rootToken,
        uint256 exitAmountOrTokenId,
        bytes32 txHash,
        bool isRegularExit,
        uint256 priority
    ) external;

    function addInput(
        uint256 exitId,
        uint256 age,
        address utxoOwner,
        address token
    ) external;

    function challengeExit(
        uint256 exitId,
        uint256 inputId,
        bytes calldata challengeData,
        address adjudicatorPredicate
    ) external;
}

// File: contracts/common/Registry.sol

pragma solidity ^0.5.2;




contract Registry is Governable {
    // @todo hardcode constants
    bytes32 private constant WETH_TOKEN = keccak256("wethToken");
    bytes32 private constant DEPOSIT_MANAGER = keccak256("depositManager");
    bytes32 private constant STAKE_MANAGER = keccak256("stakeManager");
    bytes32 private constant VALIDATOR_SHARE = keccak256("validatorShare");
    bytes32 private constant WITHDRAW_MANAGER = keccak256("withdrawManager");
    bytes32 private constant CHILD_CHAIN = keccak256("childChain");
    bytes32 private constant STATE_SENDER = keccak256("stateSender");
    bytes32 private constant SLASHING_MANAGER = keccak256("slashingManager");

    address public erc20Predicate;
    address public erc721Predicate;

    mapping(bytes32 => address) public contractMap;
    mapping(address => address) public rootToChildToken;
    mapping(address => address) public childToRootToken;
    mapping(address => bool) public proofValidatorContracts;
    mapping(address => bool) public isERC721;

    enum Type {Invalid, ERC20, ERC721, Custom}
    struct Predicate {
        Type _type;
    }
    mapping(address => Predicate) public predicates;

    event TokenMapped(address indexed rootToken, address indexed childToken);
    event ProofValidatorAdded(address indexed validator, address indexed from);
    event ProofValidatorRemoved(address indexed validator, address indexed from);
    event PredicateAdded(address indexed predicate, address indexed from);
    event PredicateRemoved(address indexed predicate, address indexed from);
    event ContractMapUpdated(bytes32 indexed key, address indexed previousContract, address indexed newContract);

    constructor(address _governance) public Governable(_governance) {}

    function updateContractMap(bytes32 _key, address _address) external onlyGovernance {
        emit ContractMapUpdated(_key, contractMap[_key], _address);
        contractMap[_key] = _address;
    }

    /**
     * @dev Map root token to child token
     * @param _rootToken Token address on the root chain
     * @param _childToken Token address on the child chain
     * @param _isERC721 Is the token being mapped ERC721
     */
    function mapToken(
        address _rootToken,
        address _childToken,
        bool _isERC721
    ) external onlyGovernance {
        require(_rootToken != address(0x0) && _childToken != address(0x0), "INVALID_TOKEN_ADDRESS");
        rootToChildToken[_rootToken] = _childToken;
        childToRootToken[_childToken] = _rootToken;
        isERC721[_rootToken] = _isERC721;
        IWithdrawManager(contractMap[WITHDRAW_MANAGER]).createExitQueue(_rootToken);
        emit TokenMapped(_rootToken, _childToken);
    }

    function addErc20Predicate(address predicate) public onlyGovernance {
        require(predicate != address(0x0), "Can not add null address as predicate");
        erc20Predicate = predicate;
        addPredicate(predicate, Type.ERC20);
    }

    function addErc721Predicate(address predicate) public onlyGovernance {
        erc721Predicate = predicate;
        addPredicate(predicate, Type.ERC721);
    }

    function addPredicate(address predicate, Type _type) public onlyGovernance {
        require(predicates[predicate]._type == Type.Invalid, "Predicate already added");
        predicates[predicate]._type = _type;
        emit PredicateAdded(predicate, msg.sender);
    }

    function removePredicate(address predicate) public onlyGovernance {
        require(predicates[predicate]._type != Type.Invalid, "Predicate does not exist");
        delete predicates[predicate];
        emit PredicateRemoved(predicate, msg.sender);
    }

    function getValidatorShareAddress() public view returns (address) {
        return contractMap[VALIDATOR_SHARE];
    }

    function getWethTokenAddress() public view returns (address) {
        return contractMap[WETH_TOKEN];
    }

    function getDepositManagerAddress() public view returns (address) {
        return contractMap[DEPOSIT_MANAGER];
    }

    function getStakeManagerAddress() public view returns (address) {
        return contractMap[STAKE_MANAGER];
    }

    function getSlashingManagerAddress() public view returns (address) {
        return contractMap[SLASHING_MANAGER];
    }

    function getWithdrawManagerAddress() public view returns (address) {
        return contractMap[WITHDRAW_MANAGER];
    }

    function getChildChainAndStateSender() public view returns (address, address) {
        return (contractMap[CHILD_CHAIN], contractMap[STATE_SENDER]);
    }

    function isTokenMapped(address _token) public view returns (bool) {
        return rootToChildToken[_token] != address(0x0);
    }

    function isTokenMappedAndIsErc721(address _token) public view returns (bool) {
        require(isTokenMapped(_token), "TOKEN_NOT_MAPPED");
        return isERC721[_token];
    }

    function isTokenMappedAndGetPredicate(address _token) public view returns (address) {
        if (isTokenMappedAndIsErc721(_token)) {
            return erc721Predicate;
        }
        return erc20Predicate;
    }

    function isChildTokenErc721(address childToken) public view returns (bool) {
        address rootToken = childToRootToken[childToken];
        require(rootToken != address(0x0), "Child token is not mapped");
        return isERC721[rootToken];
    }
}

// File: contracts/staking/validatorShare/ValidatorShareProxy.sol

pragma solidity ^0.5.2;



contract ValidatorShareProxy is UpgradableProxy {
    constructor(address _registry) public UpgradableProxy(_registry) {}

    function loadImplementation() internal view returns (address) {
        return Registry(super.loadImplementation()).getValidatorShareAddress();
    }
}

// File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol

pragma solidity ^0.5.2;

/**
 * @title ERC20 interface
 * @dev see https://eips.ethereum.org/EIPS/eip-20
 */
interface IERC20 {
    function transfer(address to, uint256 value) external returns (bool);

    function approve(address spender, uint256 value) external returns (bool);

    function transferFrom(address from, address to, uint256 value) external returns (bool);

    function totalSupply() external view returns (uint256);

    function balanceOf(address who) external view returns (uint256);

    function allowance(address owner, address spender) external view returns (uint256);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: openzeppelin-solidity/contracts/math/SafeMath.sol

pragma solidity ^0.5.2;

/**
 * @title SafeMath
 * @dev Unsigned math operations with safety checks that revert on error
 */
library SafeMath {
    /**
     * @dev Multiplies two unsigned integers, reverts on overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (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-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b);

        return c;
    }

    /**
     * @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Adds two unsigned integers, reverts on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);

        return c;
    }

    /**
     * @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
     * reverts when dividing by zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
    }
}

// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol

pragma solidity ^0.5.2;



/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://eips.ethereum.org/EIPS/eip-20
 * Originally based on code by FirstBlood:
 * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 *
 * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
 * all accounts just by listening to said events. Note that this isn't required by the specification, and other
 * compliant implementations may not do it.
 */
contract ERC20 is IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowed;

    uint256 private _totalSupply;

    /**
     * @dev Total number of tokens in existence
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev Gets the balance of the specified address.
     * @param owner The address to query the balance of.
     * @return A uint256 representing the amount owned by the passed address.
     */
    function balanceOf(address owner) public view returns (uint256) {
        return _balances[owner];
    }

    /**
     * @dev Function to check the amount of tokens that an owner allowed to a spender.
     * @param owner address The address which owns the funds.
     * @param spender address The address which will spend the funds.
     * @return A uint256 specifying the amount of tokens still available for the spender.
     */
    function allowance(address owner, address spender) public view returns (uint256) {
        return _allowed[owner][spender];
    }

    /**
     * @dev Transfer token to a specified address
     * @param to The address to transfer to.
     * @param value The amount to be transferred.
     */
    function transfer(address to, uint256 value) public returns (bool) {
        _transfer(msg.sender, to, value);
        return true;
    }

    /**
     * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
     * 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
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     */
    function approve(address spender, uint256 value) public returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    /**
     * @dev Transfer tokens from one address to another.
     * Note that while this function emits an Approval event, this is not required as per the specification,
     * and other compliant implementations may not emit the event.
     * @param from address The address which you want to send tokens from
     * @param to address The address which you want to transfer to
     * @param value uint256 the amount of tokens to be transferred
     */
    function transferFrom(address from, address to, uint256 value) public returns (bool) {
        _transfer(from, to, value);
        _approve(from, msg.sender, _allowed[from][msg.sender].sub(value));
        return true;
    }

    /**
     * @dev Increase the amount of tokens that an owner allowed to a spender.
     * approve should be called when _allowed[msg.sender][spender] == 0. To increment
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param addedValue The amount of tokens to increase the allowance by.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Decrease the amount of tokens that an owner allowed to a spender.
     * approve should be called when _allowed[msg.sender][spender] == 0. To decrement
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param subtractedValue The amount of tokens to decrease the allowance by.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue));
        return true;
    }

    /**
     * @dev Transfer token for a specified addresses
     * @param from The address to transfer from.
     * @param to The address to transfer to.
     * @param value The amount to be transferred.
     */
    function _transfer(address from, address to, uint256 value) internal {
        require(to != address(0));

        _balances[from] = _balances[from].sub(value);
        _balances[to] = _balances[to].add(value);
        emit Transfer(from, to, value);
    }

    /**
     * @dev Internal function that mints an amount of the token and assigns it to
     * an account. This encapsulates the modification of balances such that the
     * proper events are emitted.
     * @param account The account that will receive the created tokens.
     * @param value The amount that will be created.
     */
    function _mint(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.add(value);
        _balances[account] = _balances[account].add(value);
        emit Transfer(address(0), account, value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account.
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burn(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }

    /**
     * @dev Approve an address to spend another addresses' tokens.
     * @param owner The address that owns the tokens.
     * @param spender The address that will spend the tokens.
     * @param value The number of tokens that can be spent.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        require(spender != address(0));
        require(owner != address(0));

        _allowed[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account, deducting from the sender's allowance for said account. Uses the
     * internal burn function.
     * Emits an Approval event (reflecting the reduced allowance).
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burnFrom(address account, uint256 value) internal {
        _burn(account, value);
        _approve(account, msg.sender, _allowed[account][msg.sender].sub(value));
    }
}

// File: contracts/common/tokens/ERC20NonTransferable.sol

pragma solidity ^0.5.2;


contract ERC20NonTransferable is ERC20 {
    function _transfer(
        address from,
        address to,
        uint256 value
    ) internal {
        revert("Disabled");
    }
}

// File: contracts/common/lib/BytesLib.sol

pragma solidity ^0.5.2;


library BytesLib {
    function concat(bytes memory _preBytes, bytes memory _postBytes)
        internal
        pure
        returns (bytes memory)
    {
        bytes memory tempBytes;
        assembly {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
            tempBytes := mload(0x40)

            // Store the length of the first bytes array at the beginning of
            // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

            // Maintain a memory counter for the current write location in the
            // temp bytes array by adding the 32 bytes for the array length to
            // the starting location.
            let mc := add(tempBytes, 0x20)
            // Stop copying when the memory counter reaches the length of the
            // first bytes array.
            let end := add(mc, length)

            for {
                // Initialize a copy counter to the start of the _preBytes data,
                // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
                // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                // Write the _preBytes data into the tempBytes memory 32 bytes
                // at a time.
                mstore(mc, mload(cc))
            }

            // Add the length of _postBytes to the current length of tempBytes
            // and store it as the new length in the first 32 bytes of the
            // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

            // Move the memory counter back from a multiple of 0x20 to the
            // actual end of the _preBytes data.
            mc := end
            // Stop copying when the memory counter reaches the new combined
            // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

            // Update the free-memory pointer by padding our last write location
            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
            // next 32 byte block, then round down to the nearest multiple of
            // 32. If the sum of the length of the two arrays is zero then add
            // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(
                0x40,
                and(
                    add(add(end, iszero(add(length, mload(_preBytes)))), 31),
                    not(31) // Round down to the nearest 32 bytes.
                )
            )
        }
        return tempBytes;
    }

    function slice(bytes memory _bytes, uint256 _start, uint256 _length)
        internal
        pure
        returns (bytes memory)
    {
        require(_bytes.length >= (_start + _length));
        bytes memory tempBytes;
        assembly {
            switch iszero(_length)
                case 0 {
                    // Get a location of some free memory and store it in tempBytes as
                    // Solidity does for memory variables.
                    tempBytes := mload(0x40)

                    // The first word of the slice result is potentially a partial
                    // word read from the original array. To read it, we calculate
                    // the length of that partial word and start copying that many
                    // bytes into the array. The first word we copy will start with
                    // data we don't care about, but the last `lengthmod` bytes will
                    // land at the beginning of the contents of the new array. When
                    // we're done copying, we overwrite the full first word with
                    // the actual length of the slice.
                    let lengthmod := and(_length, 31)

                    // The multiplication in the next line is necessary
                    // because when slicing multiples of 32 bytes (lengthmod == 0)
                    // the following copy loop was copying the origin's length
                    // and then ending prematurely not copying everything it should.
                    let mc := add(
                        add(tempBytes, lengthmod),
                        mul(0x20, iszero(lengthmod))
                    )
                    let end := add(mc, _length)

                    for {
                        // The multiplication in the next line has the same exact purpose
                        // as the one above.
                        let cc := add(
                            add(
                                add(_bytes, lengthmod),
                                mul(0x20, iszero(lengthmod))
                            ),
                            _start
                        )
                    } lt(mc, end) {
                        mc := add(mc, 0x20)
                        cc := add(cc, 0x20)
                    } {
                        mstore(mc, mload(cc))
                    }

                    mstore(tempBytes, _length)

                    //update free-memory pointer
                    //allocating the array padded to 32 bytes like the compiler does now
                    mstore(0x40, and(add(mc, 31), not(31)))
                }
                //if we want a zero-length slice let's just return a zero-length array
                default {
                    tempBytes := mload(0x40)
                    mstore(0x40, add(tempBytes, 0x20))
                }
        }

        return tempBytes;
    }

    // Pad a bytes array to 32 bytes
    function leftPad(bytes memory _bytes) internal pure returns (bytes memory) {
        // may underflow if bytes.length < 32. Hence using SafeMath.sub
        bytes memory newBytes = new bytes(SafeMath.sub(32, _bytes.length));
        return concat(newBytes, _bytes);
    }

    function toBytes32(bytes memory b) internal pure returns (bytes32) {
        require(b.length >= 32, "Bytes array should atleast be 32 bytes");
        bytes32 out;
        for (uint256 i = 0; i < 32; i++) {
            out |= bytes32(b[i] & 0xFF) >> (i * 8);
        }
        return out;
    }

    function toBytes4(bytes memory b) internal pure returns (bytes4 result) {
        assembly {
            result := mload(add(b, 32))
        }
    }

    function fromBytes32(bytes32 x) internal pure returns (bytes memory) {
        bytes memory b = new bytes(32);
        for (uint256 i = 0; i < 32; i++) {
            b[i] = bytes1(uint8(uint256(x) / (2**(8 * (31 - i)))));
        }
        return b;
    }

    function fromUint(uint256 _num) internal pure returns (bytes memory _ret) {
        _ret = new bytes(32);
        assembly {
            mstore(add(_ret, 32), _num)
        }
    }

    function toUint(bytes memory _bytes, uint256 _start)
        internal
        pure
        returns (uint256)
    {
        require(_bytes.length >= (_start + 32));
        uint256 tempUint;
        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }
        return tempUint;
    }

    function toAddress(bytes memory _bytes, uint256 _start)
        internal
        pure
        returns (address)
    {
        require(_bytes.length >= (_start + 20));
        address tempAddress;
        assembly {
            tempAddress := div(
                mload(add(add(_bytes, 0x20), _start)),
                0x1000000000000000000000000
            )
        }

        return tempAddress;
    }
}

// File: contracts/common/lib/ECVerify.sol

pragma solidity ^0.5.2;


library ECVerify {
    function ecrecovery(bytes32 hash, bytes memory sig)
        public
        pure
        returns (address)
    {
        bytes32 r;
        bytes32 s;
        uint8 v;

        if (sig.length != 65) {
            return address(0x0);
        }

        assembly {
            r := mload(add(sig, 32))
            s := mload(add(sig, 64))
            v := and(mload(add(sig, 65)), 255)
        }

        // https://github.com/ethereum/go-ethereum/issues/2053
        if (v < 27) {
            v += 27;
        }

        if (v != 27 && v != 28) {
            return address(0x0);
        }

        // get address out of hash and signature
        address result = ecrecover(hash, v, r, s);

        // ecrecover returns zero on error
        require(result != address(0x0));

        return result;
    }

    function ecrecovery(bytes32 hash, uint8 v, bytes32 r, bytes32 s)
        public
        pure
        returns (address)
    {
        // get address out of hash and signature
        address result = ecrecover(hash, v, r, s);

        // ecrecover returns zero on error
        require(result != address(0x0), "signature verification failed");

        return result;
    }

    function ecverify(bytes32 hash, bytes memory sig, address signer)
        public
        pure
        returns (bool)
    {
        return signer == ecrecovery(hash, sig);
    }
}

// File: contracts/staking/StakingInfo.sol

pragma solidity ^0.5.2;







// dummy interface to avoid cyclic dependency
contract IStakeManagerLocal {
    enum Status {Inactive, Active, Locked, Unstaked}

    struct Validator {
        uint256 amount;
        uint256 reward;
        uint256 activationEpoch;
        uint256 deactivationEpoch;
        uint256 jailTime;
        address signer;
        address contractAddress;
        Status status;
    }

    mapping(uint256 => Validator) public validators;
    bytes32 public accountStateRoot;
    uint256 public activeAmount; // delegation amount from validator contract
    uint256 public validatorRewards;

    function currentValidatorSetTotalStake() public view returns (uint256);

    // signer to Validator mapping
    function signerToValidator(address validatorAddress)
        public
        view
        returns (uint256);

    function isValidator(uint256 validatorId) public view returns (bool);
}


contract StakingInfo is Ownable {
    using SafeMath for uint256;
    mapping(uint256 => uint256) public validatorNonce;

    /// @dev Emitted when validator stakes in '_stakeFor()' in StakeManager.
    /// @param signer validator address.
    /// @param validatorId unique integer to identify a validator.
    /// @param nonce to synchronize the events in heimdal.
    /// @param activationEpoch validator's first epoch as proposer.
    /// @param amount staking amount.
    /// @param total total staking amount.
    /// @param signerPubkey public key of the validator
    event Staked(
        address indexed signer,
        uint256 indexed validatorId,
        uint256 nonce,
        uint256 indexed activationEpoch,
        uint256 amount,
        uint256 total,
        bytes signerPubkey
    );

    /// @dev Emitted when validator unstakes in 'unstakeClaim()'
    /// @param user address of the validator.
    /// @param validatorId unique integer to identify a validator.
    /// @param amount staking amount.
    /// @param total total staking amount.
    event Unstaked(
        address indexed user,
        uint256 indexed validatorId,
        uint256 amount,
        uint256 total
    );

    /// @dev Emitted when validator unstakes in '_unstake()'.
    /// @param user address of the validator.
    /// @param validatorId unique integer to identify a validator.
    /// @param nonce to synchronize the events in heimdal.
    /// @param deactivationEpoch last epoch for validator.
    /// @param amount staking amount.
    event UnstakeInit(
        address indexed user,
        uint256 indexed validatorId,
        uint256 nonce,
        uint256 deactivationEpoch,
        uint256 indexed amount
    );

    /// @dev Emitted when the validator public key is updated in 'updateSigner()'.
    /// @param validatorId unique integer to identify a validator.
    /// @param nonce to synchronize the events in heimdal.
    /// @param oldSigner old address of the validator.
    /// @param newSigner new address of the validator.
    /// @param signerPubkey public key of the validator.
    event SignerChange(
        uint256 indexed validatorId,
        uint256 nonce,
        address indexed oldSigner,
        address indexed newSigner,
        bytes signerPubkey
    );
    event Restaked(uint256 indexed validatorId, uint256 amount, uint256 total);
    event Jailed(
        uint256 indexed validatorId,
        uint256 indexed exitEpoch,
        address indexed signer
    );
    event UnJailed(uint256 indexed validatorId, address indexed signer);
    event Slashed(uint256 indexed nonce, uint256 indexed amount);
    event ThresholdChange(uint256 newThreshold, uint256 oldThreshold);
    event DynastyValueChange(uint256 newDynasty, uint256 oldDynasty);
    event ProposerBonusChange(
        uint256 newProposerBonus,
        uint256 oldProposerBonus
    );

    event RewardUpdate(uint256 newReward, uint256 oldReward);

    /// @dev Emitted when validator confirms the auction bid and at the time of restaking in confirmAuctionBid() and restake().
    /// @param validatorId unique integer to identify a validator.
    /// @param nonce to synchronize the events in heimdal.
    /// @param newAmount the updated stake amount.
    event StakeUpdate(
        uint256 indexed validatorId,
        uint256 indexed nonce,
        uint256 indexed newAmount
    );
    event ClaimRewards(
        uint256 indexed validatorId,
        uint256 indexed amount,
        uint256 indexed totalAmount
    );
    event StartAuction(
        uint256 indexed validatorId,
        uint256 indexed amount,
        uint256 indexed auctionAmount
    );
    event ConfirmAuction(
        uint256 indexed newValidatorId,
        uint256 indexed oldValidatorId,
        uint256 indexed amount
    );
    event TopUpFee(address indexed user, uint256 indexed fee);
    event ClaimFee(address indexed user, uint256 indexed fee);
    // Delegator events
    event ShareMinted(
        uint256 indexed validatorId,
        address indexed user,
        uint256 indexed amount,
        uint256 tokens
    );
    event ShareBurned(
        uint256 indexed validatorId,
        address indexed user,
        uint256 indexed amount,
        uint256 tokens
    );
    event DelegatorClaimedRewards(
        uint256 indexed validatorId,
        address indexed user,
        uint256 indexed rewards
    );
    event DelegatorRestaked(
        uint256 indexed validatorId,
        address indexed user,
        uint256 indexed totalStaked
    );
    event DelegatorUnstaked(
        uint256 indexed validatorId,
        address indexed user,
        uint256 amount
    );
    event UpdateCommissionRate(
        uint256 indexed validatorId,
        uint256 indexed newCommissionRate,
        uint256 indexed oldCommissionRate
    );

    Registry public registry;

    modifier onlyValidatorContract(uint256 validatorId) {
        address _contract;
        (, , , , , , _contract, ) = IStakeManagerLocal(
            registry.getStakeManagerAddress()
        )
            .validators(validatorId);
        require(_contract == msg.sender,
        "Invalid sender, not validator");
        _;
    }

    modifier StakeManagerOrValidatorContract(uint256 validatorId) {
        address _contract;
        address _stakeManager = registry.getStakeManagerAddress();
        (, , , , , , _contract, ) = IStakeManagerLocal(_stakeManager).validators(
            validatorId
        );
        require(_contract == msg.sender || _stakeManager == msg.sender,
        "Invalid sender, not stake manager or validator contract");
        _;
    }

    modifier onlyStakeManager() {
        require(registry.getStakeManagerAddress() == msg.sender,
        "Invalid sender, not stake manager");
        _;
    }
    modifier onlySlashingManager() {
        require(registry.getSlashingManagerAddress() == msg.sender,
        "Invalid sender, not slashing manager");
        _;
    }

    constructor(address _registry) public {
        registry = Registry(_registry);
    }

    function updateNonce(
        uint256[] calldata validatorIds,
        uint256[] calldata nonces
    ) external onlyOwner {
        require(validatorIds.length == nonces.length, "args length mismatch");

        for (uint256 i = 0; i < validatorIds.length; ++i) {
            validatorNonce[validatorIds[i]] = nonces[i];
        }
    } 

    function logStaked(
        address signer,
        bytes memory signerPubkey,
        uint256 validatorId,
        uint256 activationEpoch,
        uint256 amount,
        uint256 total
    ) public onlyStakeManager {
        validatorNonce[validatorId] = validatorNonce[validatorId].add(1);
        emit Staked(
            signer,
            validatorId,
            validatorNonce[validatorId],
            activationEpoch,
            amount,
            total,
            signerPubkey
        );
    }

    function logUnstaked(
        address user,
        uint256 validatorId,
        uint256 amount,
        uint256 total
    ) public onlyStakeManager {
        emit Unstaked(user, validatorId, amount, total);
    }

    function logUnstakeInit(
        address user,
        uint256 validatorId,
        uint256 deactivationEpoch,
        uint256 amount
    ) public onlyStakeManager {
        validatorNonce[validatorId] = validatorNonce[validatorId].add(1);
        emit UnstakeInit(
            user,
            validatorId,
            validatorNonce[validatorId],
            deactivationEpoch,
            amount
        );
    }

    function logSignerChange(
        uint256 validatorId,
        address oldSigner,
        address newSigner,
        bytes memory signerPubkey
    ) public onlyStakeManager {
        validatorNonce[validatorId] = validatorNonce[validatorId].add(1);
        emit SignerChange(
            validatorId,
            validatorNonce[validatorId],
            oldSigner,
            newSigner,
            signerPubkey
        );
    }

    function logRestaked(uint256 validatorId, uint256 amount, uint256 total)
        public
        onlyStakeManager
    {
        emit Restaked(validatorId, amount, total);
    }

    function logJailed(uint256 validatorId, uint256 exitEpoch, address signer)
        public
        onlyStakeManager
    {
        emit Jailed(validatorId, exitEpoch, signer);
    }

    function logUnjailed(uint256 validatorId, address signer)
        public
        onlyStakeManager
    {
        emit UnJailed(validatorId, signer);
    }

    function logSlashed(uint256 nonce, uint256 amount)
        public
        onlySlashingManager
    {
        emit Slashed(nonce, amount);
    }

    function logThresholdChange(uint256 newThreshold, uint256 oldThreshold)
        public
        onlyStakeManager
    {
        emit ThresholdChange(newThreshold, oldThreshold);
    }

    function logDynastyValueChange(uint256 newDynasty, uint256 oldDynasty)
        public
        onlyStakeManager
    {
        emit DynastyValueChange(newDynasty, oldDynasty);
    }

    function logProposerBonusChange(
        uint256 newProposerBonus,
        uint256 oldProposerBonus
    ) public onlyStakeManager {
        emit ProposerBonusChange(newProposerBonus, oldProposerBonus);
    }

    function logRewardUpdate(uint256 newReward, uint256 oldReward)
        public
        onlyStakeManager
    {
        emit RewardUpdate(newReward, oldReward);
    }

    function logStakeUpdate(uint256 validatorId)
        public
        StakeManagerOrValidatorContract(validatorId)
    {
        validatorNonce[validatorId] = validatorNonce[validatorId].add(1);
        emit StakeUpdate(
            validatorId,
            validatorNonce[validatorId],
            totalValidatorStake(validatorId)
        );
    }

    function logClaimRewards(
        uint256 validatorId,
        uint256 amount,
        uint256 totalAmount
    ) public onlyStakeManager {
        emit ClaimRewards(validatorId, amount, totalAmount);
    }

    function logStartAuction(
        uint256 validatorId,
        uint256 amount,
        uint256 auctionAmount
    ) public onlyStakeManager {
        emit StartAuction(validatorId, amount, auctionAmount);
    }

    function logConfirmAuction(
        uint256 newValidatorId,
        uint256 oldValidatorId,
        uint256 amount
    ) public onlyStakeManager {
        emit ConfirmAuction(newValidatorId, oldValidatorId, amount);
    }

    function logTopUpFee(address user, uint256 fee) public onlyStakeManager {
        emit TopUpFee(user, fee);
    }

    function logClaimFee(address user, uint256 fee) public onlyStakeManager {
        emit ClaimFee(user, fee);
    }

    function getStakerDetails(uint256 validatorId)
        public
        view
        returns (
            uint256 amount,
            uint256 reward,
            uint256 activationEpoch,
            uint256 deactivationEpoch,
            address signer,
            uint256 _status
        )
    {
        IStakeManagerLocal stakeManager = IStakeManagerLocal(
            registry.getStakeManagerAddress()
        );
        address _contract;
        IStakeManagerLocal.Status status;
        (
            amount,
            reward,
            activationEpoch,
            deactivationEpoch,
            ,
            signer,
            _contract,
            status
        ) = stakeManager.validators(validatorId);
        _status = uint256(status);
        if (_contract != address(0x0)) {
            reward += IStakeManagerLocal(_contract).validatorRewards();
        }
    }

    function totalValidatorStake(uint256 validatorId)
        public
        view
        returns (uint256 validatorStake)
    {
        address contractAddress;
        (validatorStake, , , , , , contractAddress, ) = IStakeManagerLocal(
            registry.getStakeManagerAddress()
        )
            .validators(validatorId);
        if (contractAddress != address(0x0)) {
            validatorStake += IStakeManagerLocal(contractAddress).activeAmount();
        }
    }

    function getAccountStateRoot()
        public
        view
        returns (bytes32 accountStateRoot)
    {
        accountStateRoot = IStakeManagerLocal(registry.getStakeManagerAddress())
            .accountStateRoot();
    }

    function getValidatorContractAddress(uint256 validatorId)
        public
        view
        returns (address ValidatorContract)
    {
        (, , , , , , ValidatorContract, ) = IStakeManagerLocal(
            registry.getStakeManagerAddress()
        )
            .validators(validatorId);
    }

    // validator Share contract logging func
    function logShareMinted(
        uint256 validatorId,
        address user,
        uint256 amount,
        uint256 tokens
    ) public onlyValidatorContract(validatorId) {
        emit ShareMinted(validatorId, user, amount, tokens);
    }

    function logShareBurned(
        uint256 validatorId,
        address user,
        uint256 amount,
        uint256 tokens
    ) public onlyValidatorContract(validatorId) {
        emit ShareBurned(validatorId, user, amount, tokens);
    }

    function logDelegatorClaimRewards(
        uint256 validatorId,
        address user,
        uint256 rewards
    ) public onlyValidatorContract(validatorId) {
        emit DelegatorClaimedRewards(validatorId, user, rewards);
    }

    function logDelegatorRestaked(
        uint256 validatorId,
        address user,
        uint256 totalStaked
    ) public onlyValidatorContract(validatorId) {
        emit DelegatorRestaked(validatorId, user, totalStaked);
    }

    function logDelegatorUnstaked(uint256 validatorId, address user, uint256 amount)
        public
        onlyValidatorContract(validatorId)
    {
        emit DelegatorUnstaked(validatorId, user, amount);
    }

    function logUpdateCommissionRate(
        uint256 validatorId,
        uint256 newCommissionRate,
        uint256 oldCommissionRate
    ) public onlyValidatorContract(validatorId) {
        emit UpdateCommissionRate(
            validatorId,
            newCommissionRate,
            oldCommissionRate
        );
    }
}

// File: contracts/common/mixin/Lockable.sol

pragma solidity ^0.5.2;

contract Lockable {
    bool public locked;

    modifier onlyWhenUnlocked() {
        _assertUnlocked();
        _;
    }

    function _assertUnlocked() private view {
        require(!locked, "locked");
    }

    function lock() public {
        locked = true;
    }

    function unlock() public {
        locked = false;
    }
}

// File: contracts/common/mixin/OwnableLockable.sol

pragma solidity ^0.5.2;



contract OwnableLockable is Lockable, Ownable {
    function lock() public onlyOwner {
        super.lock();
    }

    function unlock() public onlyOwner {
        super.unlock();
    }
}

// File: contracts/staking/stakeManager/IStakeManager.sol

pragma solidity ^0.5.2;


contract IStakeManager {
    // validator replacement
    function startAuction(
        uint256 validatorId,
        uint256 amount,
        bool acceptDelegation,
        bytes calldata signerPubkey
    ) external;

    function confirmAuctionBid(uint256 validatorId, uint256 heimdallFee) external;

    function transferFunds(
        uint256 validatorId,
        uint256 amount,
        address delegator
    ) external returns (bool);

    function delegationDeposit(
        uint256 validatorId,
        uint256 amount,
        address delegator
    ) external returns (bool);

    function stake(
        uint256 amount,
        uint256 heimdallFee,
        bool acceptDelegation,
        bytes calldata signerPubkey
    ) external;

    function unstake(uint256 validatorId) external;

    function totalStakedFor(address addr) external view returns (uint256);

    function stakeFor(
        address user,
        uint256 amount,
        uint256 heimdallFee,
        bool acceptDelegation,
        bytes memory signerPubkey
    ) public;

    function checkSignatures(
        uint256 blockInterval,
        bytes32 voteHash,
        bytes32 stateRoot,
        address proposer,
        bytes memory sigs
    ) public returns (uint256);

    function updateValidatorState(uint256 validatorId, int256 amount) public;

    function ownerOf(uint256 tokenId) public view returns (address);

    function slash(bytes memory slashingInfoList) public returns (uint256);

    function validatorStake(uint256 validatorId) public view returns (uint256);

    function epoch() public view returns (uint256);

    function withdrawalDelay() public view returns (uint256);
}

// File: contracts/staking/validatorShare/IValidatorShare.sol

pragma solidity ^0.5.2;

// note this contract interface is only for stakeManager use
contract IValidatorShare {
    function withdrawRewardsValidator() external returns (uint256);

    function addProposerBonus(uint256 _rewards, uint256 valStake) public;

    function withdrawRewards() public;

    function unstakeClaimTokens() public;

    function getLiquidRewards(address user) public view returns (uint256);
    
    function getActiveAmount() external view returns (uint256);

    function owner() public view returns (address);

    function restake() public;

    function updateRewards(
        uint256 _reward,
        uint256 _totalStake,
        uint256 validatorStake
    ) external returns (uint256);

    function unlockContract() external returns (uint256);

    function lockContract() external returns (uint256);

    function drain(
        address token,
        address payable destination,
        uint256 amount
    ) external;

    function slash(uint256 valPow, uint256 totalAmountToSlash) external returns (uint256);

    function updateDelegation(bool delegation) external;
}

// File: contracts/common/mixin/Initializable.sol

pragma solidity ^0.5.2;

contract Initializable {
    bool inited = false;

    modifier initializer() {
        require(!inited, "already inited");
        inited = true;
        
        _;
    }
}

// File: contracts/staking/validatorShare/ValidatorShare.sol

pragma solidity ^0.5.2;








contract ValidatorShare is IValidatorShare, ERC20NonTransferable, OwnableLockable, Initializable {
    struct Delegator {
        uint256 shares;
        uint256 withdrawEpoch;
    }

    uint256 constant EXCHANGE_RATE_PRECISION = 100;
    uint256 constant MAX_COMMISION_RATE = 100;
    uint256 constant REWARD_PRECISION = 10**25;

    StakingInfo public stakingLogger;
    IStakeManager public stakeManager;
    uint256 public validatorId;
    uint256 public validatorRewards;
    uint256 public commissionRate;
    //last checkpoint where validator updated commission rate
    uint256 public lastCommissionUpdate;
    uint256 public minAmount = 10**18;

    uint256 public totalStake;
    uint256 public rewardPerShare;
    uint256 public activeAmount;
    bool public delegation = true;

    uint256 public withdrawPool;
    uint256 public withdrawShares;

    mapping(address => uint256) public amountStaked;
    mapping(address => Delegator) public delegators;
    mapping(address => uint256) public initalRewardPerShare;

    modifier onlyValidator() {
        require(stakeManager.ownerOf(validatorId) == msg.sender, "not validator");
        _;
    }

    // onlyOwner will prevent this contract from initializing, since it's owner is going to be 0x0 address
    function initialize(uint256 _validatorId, address _stakingLogger, address _stakeManager) external initializer  {
        validatorId = _validatorId;
        stakingLogger = StakingInfo(_stakingLogger);
        stakeManager = IStakeManager(_stakeManager);
        _transferOwnership(_stakeManager);

        minAmount = 10**18;
        delegation = true;
    }

    function updateCommissionRate(uint256 newCommissionRate) external onlyValidator {
        uint256 epoch = stakeManager.epoch();
        uint256 _lastCommissionUpdate = lastCommissionUpdate;

        require( // withdrawalDelay == dynasty
            (_lastCommissionUpdate.add(stakeManager.withdrawalDelay()) <= epoch) || _lastCommissionUpdate == 0, // For initial setting of commission rate
            "Commission rate update cooldown period"
        );

        require(newCommissionRate <= MAX_COMMISION_RATE, "Commission rate should be in range of 0-100");
        stakingLogger.logUpdateCommissionRate(validatorId, newCommissionRate, commissionRate);
        commissionRate = newCommissionRate;
        lastCommissionUpdate = epoch;
    }

    function updateRewards(uint256 reward, uint256 checkpointStakePower, uint256 validatorStake)
        external
        onlyOwner
        returns (uint256)
    {
        /**
        restaking is simply buying more shares of pool
        but those needs to be nonswapable/transferrable(to prevent https://en.wikipedia.org/wiki/Tragedy_of_the_commons)

        - calculate rewards for validator stake + delgation
        - keep the validator rewards aside
        - take the commission out
        - add rewards to pool rewards
        - returns total active stake for validator
        */
        uint256 combinedStakePower = validatorStake.add(activeAmount); // validator + delegation stake power
        uint256 rewards = combinedStakePower.mul(reward).div(checkpointStakePower);

        _updateRewards(rewards, validatorStake, combinedStakePower);
        return combinedStakePower;
    }

    function addProposerBonus(uint256 rewards, uint256 validatorStake) public onlyOwner {
        uint256 combinedStakePower = validatorStake.add(activeAmount);
        _updateRewards(rewards, validatorStake, combinedStakePower);
    }

    function _updateRewards(uint256 rewards, uint256 validatorStake, uint256 combinedStakePower) internal {
        uint256 _validatorRewards = validatorStake.mul(rewards).div(combinedStakePower);

        // add validator commission from delegation rewards
        if (commissionRate > 0) {
            _validatorRewards = _validatorRewards.add(
                rewards.sub(_validatorRewards).mul(commissionRate).div(MAX_COMMISION_RATE)
            );
        }

        validatorRewards = validatorRewards.add(_validatorRewards);

        uint256 delegatorsRewards = rewards.sub(_validatorRewards);
        uint256 totalShares = totalSupply();
        if (totalShares > 0) {
            rewardPerShare = rewardPerShare.add(
                delegatorsRewards.mul(REWARD_PRECISION).div(totalShares)
            );
        }
    }

    function withdrawRewardsValidator() external onlyOwner returns (uint256) {
        uint256 _validatorRewards = validatorRewards;
        validatorRewards = 0;
        return _validatorRewards;
    }

    function exchangeRate() public view returns (uint256) {
        uint256 totalShares = totalSupply();
        return
            totalShares == 0
                ? EXCHANGE_RATE_PRECISION
                : activeAmount.mul(EXCHANGE_RATE_PRECISION).div(totalShares);
    }

    function withdrawExchangeRate() public view returns (uint256) {
        uint256 _withdrawShares = withdrawShares;
        return
            _withdrawShares == 0
                ? EXCHANGE_RATE_PRECISION
                : withdrawPool.mul(EXCHANGE_RATE_PRECISION).div(_withdrawShares);
    }

    function buyVoucher(uint256 _amount, uint256 _minSharesToMint) public {
        _withdrawAndTransferReward();
        uint256 amountToDeposit = _buyShares(_amount, _minSharesToMint);
        require(stakeManager.delegationDeposit(validatorId, amountToDeposit, msg.sender), "deposit failed");
    }

    function restake() public {
        uint256 liquidReward = _withdrawReward(msg.sender);
        require(liquidReward >= minAmount, "Too small rewards to restake");

        _buyShares(liquidReward, 0);

        stakingLogger.logDelegatorRestaked(validatorId, msg.sender, amountStaked[msg.sender]);
    }

    function _buyShares(uint256 _amount, uint256 _minSharesToMint) private onlyWhenUnlocked returns(uint256) {
        require(delegation, "Delegation is disabled");

        uint256 rate = exchangeRate();
        uint256 shares = _amount.mul(EXCHANGE_RATE_PRECISION).div(rate);
        require(shares >= _minSharesToMint, "Too much slippage");
        require(delegators[msg.sender].shares == 0, "Ongoing exit");

        _mint(msg.sender, shares);

        _amount = _amount.sub(_amount % rate.mul(shares).div(EXCHANGE_RATE_PRECISION));

        totalStake = totalStake.add(_amount);
        amountStaked[msg.sender] = amountStaked[msg.sender].add(_amount);

        activeAmount = activeAmount.add(_amount);
        stakeManager.updateValidatorState(validatorId, int256(_amount));

        StakingInfo logger = stakingLogger;
        logger.logShareMinted(validatorId, msg.sender, _amount, shares);
        logger.logStakeUpdate(validatorId);

        return _amount;
    }

    function sellVoucher(uint256 _minClaimAmount) public {
        uint256 shares = balanceOf(msg.sender);
        require(shares > 0, "Zero balance");

        uint256 rate = exchangeRate();
        uint256 _amount = rate.mul(shares).div(EXCHANGE_RATE_PRECISION);
        require(_amount >= _minClaimAmount, "Too much slippage");

        _withdrawAndTransferReward();
        _burn(msg.sender, shares);
        stakeManager.updateValidatorState(validatorId, -int256(_amount));

        activeAmount = activeAmount.sub(_amount);
        uint256 _withdrawPoolShare = _amount.mul(EXCHANGE_RATE_PRECISION).div(withdrawExchangeRate());

        withdrawPool = withdrawPool.add(_amount);
        withdrawShares = withdrawShares.add(_withdrawPoolShare);
        delegators[msg.sender] = Delegator({shares: _withdrawPoolShare, withdrawEpoch: stakeManager.epoch()});
        amountStaked[msg.sender] = 0;

        StakingInfo logger = stakingLogger;
        logger.logShareBurned(validatorId, msg.sender, _amount, shares);
        logger.logStakeUpdate(validatorId);
    }

    function _withdrawReward(address user) private returns(uint256) {
        uint256 liquidRewards = getLiquidRewards(user);
        initalRewardPerShare[user] = rewardPerShare;
        return liquidRewards;
    }

    function _withdrawAndTransferReward() private returns(uint256) {
        uint256 liquidRewards = _withdrawReward(msg.sender);
        if (liquidRewards > 0) {
            require(stakeManager.transferFunds(validatorId, liquidRewards, msg.sender), "Insufficent rewards");
            stakingLogger.logDelegatorClaimRewards(validatorId, msg.sender, liquidRewards);
        }
        return liquidRewards;
    }

    function withdrawRewards() public {
        uint256 rewards = _withdrawAndTransferReward();
        require(rewards >= minAmount, "Too small rewards amount");
    }

    function getLiquidRewards(address user) public view returns (uint256) {
        uint256 shares = balanceOf(user);
        if (shares == 0) {
            return 0;
        }

        return rewardPerShare.sub(initalRewardPerShare[user]).mul(shares).div(REWARD_PRECISION);
    }

    function unstakeClaimTokens() public {
        Delegator storage delegator = delegators[msg.sender];

        uint256 shares = delegator.shares;
        require(
            delegator.withdrawEpoch.add(stakeManager.withdrawalDelay()) <= stakeManager.epoch() && shares > 0,
            "Incomplete withdrawal period"
        );

        uint256 _amount = withdrawExchangeRate().mul(shares).div(EXCHANGE_RATE_PRECISION);
        withdrawShares = withdrawShares.sub(shares);
        withdrawPool = withdrawPool.sub(_amount);

        totalStake = totalStake.sub(_amount);

        require(stakeManager.transferFunds(validatorId, _amount, msg.sender), "Insufficent rewards");
        stakingLogger.logDelegatorUnstaked(validatorId, msg.sender, _amount);
        delete delegators[msg.sender];
    }

    function slash(uint256 valPow, uint256 totalAmountToSlash) external onlyOwner returns (uint256) {
        uint256 _withdrawPool = withdrawPool;
        uint256 delegationAmount = activeAmount.add(_withdrawPool);
        if (delegationAmount == 0) {
            return 0;
        }
        // total amount to be slashed from delegation pool (active + inactive)
        uint256 _amountToSlash = delegationAmount.mul(totalAmountToSlash).div(valPow.add(delegationAmount));
        uint256 _amountToSlashWithdrawalPool = _withdrawPool.mul(_amountToSlash).div(delegationAmount);

        // slash inactive pool
        withdrawPool = _withdrawPool.sub(_amountToSlashWithdrawalPool);
        activeAmount = activeAmount.sub(_amountToSlash.sub(_amountToSlashWithdrawalPool));
        return _amountToSlash;
    }

    function updateDelegation(bool _delegation) external onlyOwner {
        delegation = _delegation;
    }

    function drain(
        address token,
        address payable destination,
        uint256 amount
    ) external onlyOwner {
        if (token == address(0x0)) {
            destination.transfer(amount);
        } else {
            require(ERC20(token).transfer(destination, amount), "Drain failed");
        }
    }

    function getActiveAmount() external view returns(uint256) {
        return activeAmount;
    }

    function unlockContract() external onlyOwner returns (uint256) {
        unlock();
        return activeAmount;
    }

    function lockContract() external onlyOwner returns (uint256) {
        lock();
        return activeAmount;
    }
}

// File: contracts/staking/validatorShare/ValidatorShareFactory.sol

pragma solidity ^0.5.2;



contract ValidatorShareFactory {
    /**
    - factory to create new validatorShare contracts
   */
    function create(uint256 validatorId, address loggerAddress, address registry) public returns (address) {
        ValidatorShareProxy proxy = new ValidatorShareProxy(registry);

        proxy.transferOwnership(msg.sender);

        address proxyAddr = address(proxy);
        (bool success, bytes memory data) = proxyAddr.call.gas(gasleft())(
            abi.encodeWithSelector(
                ValidatorShare(proxyAddr).initialize.selector, 
                validatorId, 
                loggerAddress, 
                msg.sender
            )
        );
        require(success, string(data));

        return proxyAddr;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":false,"inputs":[{"internalType":"uint256","name":"validatorId","type":"uint256"},{"internalType":"address","name":"loggerAddress","type":"address"},{"internalType":"address","name":"registry","type":"address"}],"name":"create","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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

66650:756:0:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;66650:756:0;;;;;;;;;;;;;;;;;;;66758:645;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;66758:645:0;;;-1:-1:-1;;;;;66758:645:0;;;;;;;;;;;;:::i;:::-;;;;-1:-1:-1;;;;;66758:645:0;;;;;;;;;;;;;;;66852:7;66872:25;66924:8;66900:33;;;;;:::i;:::-;-1:-1:-1;;;;;66900:33:0;;;;;;;;;;;;;;;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;-1:-1;66946:35:0;;;-1:-1:-1;;;66946:35:0;;66970:10;66946:35;;;;;;66872:61;;-1:-1:-1;;;;;;66946:23:0;;;;;:35;;;;;-1:-1:-1;;66946:35:0;;;;;;;;-1:-1:-1;66946:23:0;:35;;;5:2:-1;;;;30:1;27;20:12;5:2;66946:35:0;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;66946:35:0;;;;66994:17;67022:5;66994:34;;67040:12;67054:17;67075:9;-1:-1:-1;;;;;67075:14:0;67094:9;67119:195;;;;;;;;;-1:-1:-1;;;;;67119:195:0;;;;;;67289:10;67119:195;;;;;;;;;;26:21:-1;;;22:32;;;6:49;;67119:195:0;;;;;;;25:18:-1;;61:17;;-1:-1;;;;;182:15;-1:-1;;;179:29;160:49;;67075:250:0;;;;67119:195;;67075:250;;;;25:18:-1;67075:250:0;;25:18:-1;36:153;66:2;61:3;58:11;36:153;;176:10;;164:23;;-1:-1;;139:12;;;;98:2;89:12;;;;114;36:153;;;274:1;267:3;263:2;259:12;254:3;250:22;246:30;315:4;311:9;305:3;299:10;295:26;356:4;350:3;344:10;340:21;389:7;380;377:20;372:3;365:33;3:399;;;67075:250:0;;;;;;;;;;;;;;;;;;;;;;;;;14:1:-1;21;16:31;;;;75:4;69:11;64:16;;144:4;140:9;133:4;115:16;111:27;107:43;104:1;100:51;94:4;87:65;169:16;166:1;159:27;225:16;222:1;215:4;212:1;208:12;193:49;7:242;;16:31;36:4;31:9;;7:242;;67039:286:0;;;;67344:7;67360:4;67336:30;;;;;-1:-1:-1;;;67336:30:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;90:11;;;84:18;71:11;;;64:39;52:2;45:10;8:100;;;12:14;67336:30:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;67386:9:0;;66758:645;-1:-1:-1;;;;;;;66758:645:0:o;66650:756::-;;;;;;;;:::o

bzzr://0bfaa3cbd55896115b097dcb624663a0433d5ee69487e6ea3020a610a3cb8b10