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 0.5.16;

import "./interface/IUpgradeSource.sol";
import "@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol";

contract VaultProxy is BaseUpgradeabilityProxy {

  constructor(address _implementation) public {
    _setImplementation(_implementation);
  }

  /**
  * The main logic. If the timer has elapsed and there is a schedule upgrade,
  * the governance can upgrade the vault
  */
  function upgrade() external {
    (bool should, address newImplementation) = IUpgradeSource(address(this)).shouldUpgrade();
    require(should, "Upgrade not scheduled");
    _upgradeTo(newImplementation);

    // the finalization needs to be executed on itself to update the storage of this proxy
    // it also needs to be invoked by the governance, not by address(this), so delegatecall is needed
    (bool success, bytes memory result) = address(this).delegatecall(
      abi.encodeWithSignature("finalizeUpgrade()")
    );

    require(success, "Issue when finalizing the upgrade");
  }

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

pragma solidity 0.5.16;

interface IUpgradeSource {
  function shouldUpgrade() external view returns (bool, address);
  function finalizeUpgrade() external;
}

pragma solidity ^0.5.0;

import './Proxy.sol';
import '../utils/Address.sol';

/**
 * @title BaseUpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract BaseUpgradeabilityProxy is Proxy {
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);

  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

  /**
   * @dev Returns the current implementation.
   * @return Address of the current implementation
   */
  function _implementation() internal view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }

  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");

    bytes32 slot = IMPLEMENTATION_SLOT;

    assembly {
      sstore(slot, newImplementation)
    }
  }
}

pragma solidity ^0.5.0;

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  function () payable external {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal view returns (address);

  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize)

      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas, implementation, 0, calldatasize, 0, 0)

      // Copy the returned data.
      returndatacopy(0, 0, returndatasize)

      switch result
      // delegatecall returns 0 on error.
      case 0 { revert(0, returndatasize) }
      default { return(0, returndatasize) }
    }
  }

  /**
   * @dev Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal {
  }

  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}

pragma solidity ^0.5.0;

/**
 * Utility library of inline functions on addresses
 *
 * Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol
 * This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
 * when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
 * build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version.
 */
library OpenZeppelinUpgradesAddress {
    /**
     * 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 account address of the account to check
     * @return whether the target address is a contract
     */
    function isContract(address account) 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.
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
}

{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "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":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":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"upgrade","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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