Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

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

pragma solidity ^0.5.0;

import "./UpgradeabilityProxy.sol";


/**
 * @title OwnedUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with basic authorization control functionalities
 */
contract OwnedUpgradeabilityProxy is UpgradeabilityProxy {
  /**
  * @dev Event to show ownership has been transferred
  * @param previousOwner representing the address of the previous owner
  * @param newOwner representing the address of the new owner
  */
  event ProxyOwnershipTransferred(address previousOwner, address newOwner);

  // Storage position of the owner of the contract
  bytes32 private constant PROXY_OWNER_POSITION = keccak256("org.govblocks.proxy.owner");

  /**
  * @dev the constructor sets the original owner of the contract to the sender account.
  */
  constructor(address _implementation) public {
    _setUpgradeabilityOwner(msg.sender);
    _upgradeTo(_implementation);
  }

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

  /**
  * @dev Tells the address of the owner
  * @return the address of the owner
  */
  function proxyOwner() public view returns (address owner) {
    bytes32 position = PROXY_OWNER_POSITION;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      owner := sload(position)
    }
  }

  /**
  * @dev Allows the current owner to transfer control of the contract to a newOwner.
  * @param _newOwner The address to transfer ownership to.
  */
  function transferProxyOwnership(address _newOwner) public onlyProxyOwner {
    require(_newOwner != address(0));
    _setUpgradeabilityOwner(_newOwner);
    emit ProxyOwnershipTransferred(proxyOwner(), _newOwner);
  }

  /**
  * @dev Allows the proxy owner to upgrade the current version of the proxy.
  * @param _implementation representing the address of the new implementation to be set.
  */
  function upgradeTo(address _implementation) public onlyProxyOwner {
    _upgradeTo(_implementation);
  }

  /**
   * @dev Sets the address of the owner
  */
  function _setUpgradeabilityOwner(address _newProxyOwner) internal {
    bytes32 position = PROXY_OWNER_POSITION;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      sstore(position, _newProxyOwner)
    }
  }
}

pragma solidity ^0.5.0;

import "./Proxy.sol";


/**
 * @title UpgradeabilityProxy
 * @dev This contract represents a proxy where the implementation address to which it will delegate can be upgraded
 */
contract UpgradeabilityProxy is Proxy {
  /**
  * @dev This event will be emitted every time the implementation gets upgraded
  * @param implementation representing the address of the upgraded implementation
  */
  event Upgraded(address indexed implementation);

  // Storage position of the address of the current implementation
  bytes32 private constant IMPLEMENTATION_POSITION = keccak256("org.govblocks.proxy.implementation");

  /**
  * @dev Constructor function
  */
  // solhint-disable-next-line no-empty-blocks
  constructor() public {}

  /**
  * @dev Tells the address of the current implementation
  * @return address of the current implementation
  */
  function implementation() public view returns (address impl) {
    bytes32 position = IMPLEMENTATION_POSITION;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      impl := sload(position)
    }
  }

  /**
  * @dev Sets the address of the current implementation
  * @param _newImplementation address representing the new implementation to be set
  */
  function _setImplementation(address _newImplementation) internal {
    bytes32 position = IMPLEMENTATION_POSITION;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      sstore(position, _newImplementation)
    }
  }

  /**
  * @dev Upgrades the implementation address
  * @param _newImplementation representing the address of the new implementation to be set
  */
  function _upgradeTo(address _newImplementation) internal {
    address currentImplementation = implementation();
    require(currentImplementation != _newImplementation);
    _setImplementation(_newImplementation);
    emit Upgraded(_newImplementation);
  }
}

pragma solidity ^0.5.0;


/**
 * @title Proxy
 * @dev Gives the possibility to delegate any call to a foreign implementation.
 */
contract Proxy {

  /**
  * @dev Fallback function allowing to perform a delegatecall to the given implementation.
  * This function will return whatever the implementation call returns
  */
  // solhint-disable-next-line no-complex-fallback
  function() external payable {
    address _impl = implementation();
    require(_impl != address(0));

    // solhint-disable-next-line no-inline-assembly
    assembly {
      let ptr := mload(0x40)
      calldatacopy(ptr, 0, calldatasize)
      let result := delegatecall(gas, _impl, ptr, calldatasize, 0, 0)
      let size := returndatasize
      returndatacopy(ptr, 0, size)

      switch result
      case 0 {revert(ptr, size)}
      default {return (ptr, size)}
    }
  }

  /**
  * @dev Tells the address of the implementation where every call will be delegated.
  * @return address of the implementation to which it will be delegated
  */
  function implementation() public view returns (address);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"ProxyOwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"impl","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"proxyOwner","outputs":[{"internalType":"address","name":"owner","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000cafea9d0264d36defa4bb10bc68e182c4c5a8a46

-----Decoded View---------------
Arg [0] : _implementation (address): 0xcafea9D0264D36Defa4BB10bC68E182C4c5A8A46

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000cafea9d0264d36defa4bb10bc68e182c4c5a8a46