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• interface ImplementationProvider
•    - function getImplementation(string con ...
•  contract Ownable
•    - function renounceOwnership()
•    - function transferOwnership(address _n ...
•    - function _transferOwnership(address _ ...
• library AddressUtils
•    - function isContract(address _addr)
•  contract ImplementationDirectory i ...
•    - function getImplementation(string con ...
•    - function setImplementation(string con ...
•    - function unsetImplementation(string c ...
•  contract AppDirectory is Implement ... *
•    - function getImplementation(string con ...
•    - function setStdlib(ImplementationProv ...

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/**
 *Submitted for verification at Etherscan.io on 2018-08-30
*/

pragma solidity ^0.4.24;

// File: node_modules/zos-lib/contracts/application/versioning/ImplementationProvider.sol

/**
 * @title ImplementationProvider
 * @dev Interface for providing implementation addresses for other contracts by name.
 */
interface ImplementationProvider {
  /**
   * @dev Abstract function to return the implementation address of a contract.
   * @param contractName Name of the contract.
   * @return Implementation address of the contract.
   */
  function getImplementation(string contractName) public view returns (address);
}

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

/**
 * @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 public owner;


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


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() public {
    owner = msg.sender;
  }

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

  /**
   * @dev Allows the current owner to relinquish control of the contract.
   * @notice Renouncing to ownership will leave the contract without an owner.
   * It will not be possible to call the functions with the `onlyOwner`
   * modifier anymore.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    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: openzeppelin-solidity/contracts/AddressUtils.sol

/**
 * Utility library of inline functions on addresses
 */
library AddressUtils {

  /**
   * Returns whether the target address is a contract
   * @dev This function will return false if invoked during the constructor of a contract,
   * as the code is not actually created until after the constructor finishes.
   * @param _addr address to check
   * @return whether the target address is a contract
   */
  function isContract(address _addr) internal view returns (bool) {
    uint256 size;
    // XXX Currently there is no better way to check if there is a contract in an address
    // than to check the size of the code at that address.
    // See https://ethereum.stackexchange.com/a/14016/36603
    // for more details about how this works.
    // TODO Check this again before the Serenity release, because all addresses will be
    // contracts then.
    // solium-disable-next-line security/no-inline-assembly
    assembly { size := extcodesize(_addr) }
    return size > 0;
  }

}

// File: node_modules/zos-lib/contracts/application/versioning/ImplementationDirectory.sol

/**
 * @title ImplementationDirectory
 * @dev Implementation provider that stores contract implementations in a mapping.
 */
contract ImplementationDirectory is ImplementationProvider, Ownable {
  /**
   * @dev Emitted when the implementation of a contract is changed.
   * @param contractName Name of the contract.
   * @param implementation Address of the added implementation.
   */
  event ImplementationChanged(string contractName, address implementation);

  /// @dev Mapping where the addresses of the implementations are stored.
  mapping (string => address) internal implementations;

  /**
   * @dev Returns the implementation address of a contract.
   * @param contractName Name of the contract.
   * @return Address of the implementation.
   */
  function getImplementation(string contractName) public view returns (address) {
    return implementations[contractName];
  }

  /**
   * @dev Sets the address of the implementation of a contract in the directory.
   * @param contractName Name of the contract.
   * @param implementation Address of the implementation.
   */
  function setImplementation(string contractName, address implementation) public onlyOwner {
    require(AddressUtils.isContract(implementation), "Cannot set implementation in directory with a non-contract address");
    implementations[contractName] = implementation;
    emit ImplementationChanged(contractName, implementation);
  }

  /**
   * @dev Removes the address of a contract implementation from the directory.
   * @param contractName Name of the contract.
   */
  function unsetImplementation(string contractName) public onlyOwner {
    implementations[contractName] = address(0);
    emit ImplementationChanged(contractName, address(0));
  }
}

// File: node_modules/zos-lib/contracts/application/AppDirectory.sol

/**
 * @title AppDirectory
 * @dev Implementation directory with a standard library as a fallback provider.
 * If the implementation is not found in the directory, it will search in the
 * standard library.
 */
contract AppDirectory is ImplementationDirectory {
  /**
   * @dev Emitted when the standard library is changed.
   * @param newStdlib Address of the new standard library.
   */
  event StdlibChanged(address newStdlib);

  /**
   * @dev Provider for standard library implementations.
   */
  ImplementationProvider public stdlib;

  /**
   * @dev Constructor function.
   * @param _stdlib Provider for standard library implementations.
   */
  constructor(ImplementationProvider _stdlib) public {
    stdlib = _stdlib;
  }

  /**
   * @dev Returns the implementation address for a given contract name.
   * If the implementation is not found in the directory, it will search in the
   * standard library.
   * @param contractName Name of the contract.
   * @return Address where the contract is implemented, or 0 if it is not
   * found.
   */
  function getImplementation(string contractName) public view returns (address) {
    address implementation = super.getImplementation(contractName);
    if(implementation != address(0)) return implementation;
    if(stdlib != address(0)) return stdlib.getImplementation(contractName);
    return address(0);
  }

  /**
   * @dev Sets a new implementation provider for standard library contracts.
   * @param _stdlib Standard library implementation provider.
   */
  function setStdlib(ImplementationProvider _stdlib) public onlyOwner {
    stdlib = _stdlib;
    emit StdlibChanged(_stdlib);
  }
}

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0000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _stdlib (address): 0x0000000000000000000000000000000000000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000000

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