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0x4A6cE97a84178A84c1CEE46a763Db619D0e6e413

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dev.izqui.eth at txn 0x5ee1418fd77fe6cc6dadebb7dff67dbe49215cd514cee53554c0f3177fc7d267

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	Transaction Hash	Method	Block		From		To
	0x5ee1418fd77fe6cc6dadebb7dff67dbe49215cd514cee53554c0f3177fc7d267	0x60806040	6592792	2018-10-27 11:12:59	2222 days ago	1540638779	dev.izqui.eth	IN	Create: Kernel	0 ETH$0.00	0.01851289	6

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Contract Source Code Verified (Exact Match)

Contract Name:

Kernel

Compiler Version

v0.4.24+commit.e67f0147

Optimization Enabled:

Yes with 10000 runs

Other Settings:

default evmVersion

Contract Source Code (Solidity)

IDE

/**
 *Submitted for verification at Etherscan.io on 2018-10-28
*/

pragma solidity 0.4.24;
// File: contracts/acl/IACL.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


interface IACL {
    function initialize(address permissionsCreator) external;

    // TODO: this should be external
    // See https://github.com/ethereum/solidity/issues/4832
    function hasPermission(address who, address where, bytes32 what, bytes how) public view returns (bool);
}
// File: contracts/common/IVaultRecoverable.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


interface IVaultRecoverable {
    function transferToVault(address token) external;

    function allowRecoverability(address token) external view returns (bool);
    function getRecoveryVault() external view returns (address);
}
// File: contracts/kernel/IKernel.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;




// This should be an interface, but interfaces can't inherit yet :(
contract IKernel is IVaultRecoverable {
    event SetApp(bytes32 indexed namespace, bytes32 indexed appId, address app);

    function acl() public view returns (IACL);
    function hasPermission(address who, address where, bytes32 what, bytes how) public view returns (bool);

    function setApp(bytes32 namespace, bytes32 appId, address app) public;
    function getApp(bytes32 namespace, bytes32 appId) public view returns (address);
}
// File: contracts/kernel/KernelConstants.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


contract KernelAppIds {
    /* Hardcoded constants to save gas
    bytes32 internal constant KERNEL_CORE_APP_ID = apmNamehash("kernel");
    bytes32 internal constant KERNEL_DEFAULT_ACL_APP_ID = apmNamehash("acl");
    bytes32 internal constant KERNEL_DEFAULT_VAULT_APP_ID = apmNamehash("vault");
    */
    bytes32 internal constant KERNEL_CORE_APP_ID = 0x3b4bf6bf3ad5000ecf0f989d5befde585c6860fea3e574a4fab4c49d1c177d9c;
    bytes32 internal constant KERNEL_DEFAULT_ACL_APP_ID = 0xe3262375f45a6e2026b7e7b18c2b807434f2508fe1a2a3dfb493c7df8f4aad6a;
    bytes32 internal constant KERNEL_DEFAULT_VAULT_APP_ID = 0x7e852e0fcfce6551c13800f1e7476f982525c2b5277ba14b24339c68416336d1;
}


contract KernelNamespaceConstants {
    /* Hardcoded constants to save gas
    bytes32 internal constant KERNEL_CORE_NAMESPACE = keccak256("core");
    bytes32 internal constant KERNEL_APP_BASES_NAMESPACE = keccak256("base");
    bytes32 internal constant KERNEL_APP_ADDR_NAMESPACE = keccak256("app");
    */
    bytes32 internal constant KERNEL_CORE_NAMESPACE = 0xc681a85306374a5ab27f0bbc385296a54bcd314a1948b6cf61c4ea1bc44bb9f8;
    bytes32 internal constant KERNEL_APP_BASES_NAMESPACE = 0xf1f3eb40f5bc1ad1344716ced8b8a0431d840b5783aea1fd01786bc26f35ac0f;
    bytes32 internal constant KERNEL_APP_ADDR_NAMESPACE = 0xd6f028ca0e8edb4a8c9757ca4fdccab25fa1e0317da1188108f7d2dee14902fb;
}
// File: contracts/kernel/KernelStorage.sol
contract KernelStorage {
    // namespace => app id => address
    mapping (bytes32 => mapping (bytes32 => address)) public apps;
    bytes32 public recoveryVaultAppId;
}
// File: contracts/acl/ACLSyntaxSugar.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


contract ACLSyntaxSugar {
    function arr() internal pure returns (uint256[]) {}

    function arr(bytes32 _a) internal pure returns (uint256[] r) {
        return arr(uint256(_a));
    }

    function arr(bytes32 _a, bytes32 _b) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b));
    }

    function arr(address _a) internal pure returns (uint256[] r) {
        return arr(uint256(_a));
    }

    function arr(address _a, address _b) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b));
    }

    function arr(address _a, uint256 _b, uint256 _c) internal pure returns (uint256[] r) {
        return arr(uint256(_a), _b, _c);
    }

    function arr(address _a, uint256 _b, uint256 _c, uint256 _d) internal pure returns (uint256[] r) {
        return arr(uint256(_a), _b, _c, _d);
    }

    function arr(address _a, uint256 _b) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b));
    }

    function arr(address _a, address _b, uint256 _c, uint256 _d, uint256 _e) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b), _c, _d, _e);
    }

    function arr(address _a, address _b, address _c) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b), uint256(_c));
    }

    function arr(address _a, address _b, uint256 _c) internal pure returns (uint256[] r) {
        return arr(uint256(_a), uint256(_b), uint256(_c));
    }

    function arr(uint256 _a) internal pure returns (uint256[] r) {
        r = new uint256[](1);
        r[0] = _a;
    }

    function arr(uint256 _a, uint256 _b) internal pure returns (uint256[] r) {
        r = new uint256[](2);
        r[0] = _a;
        r[1] = _b;
    }

    function arr(uint256 _a, uint256 _b, uint256 _c) internal pure returns (uint256[] r) {
        r = new uint256[](3);
        r[0] = _a;
        r[1] = _b;
        r[2] = _c;
    }

    function arr(uint256 _a, uint256 _b, uint256 _c, uint256 _d) internal pure returns (uint256[] r) {
        r = new uint256[](4);
        r[0] = _a;
        r[1] = _b;
        r[2] = _c;
        r[3] = _d;
    }

    function arr(uint256 _a, uint256 _b, uint256 _c, uint256 _d, uint256 _e) internal pure returns (uint256[] r) {
        r = new uint256[](5);
        r[0] = _a;
        r[1] = _b;
        r[2] = _c;
        r[3] = _d;
        r[4] = _e;
    }
}


contract ACLHelpers {
    function decodeParamOp(uint256 _x) internal pure returns (uint8 b) {
        return uint8(_x >> (8 * 30));
    }

    function decodeParamId(uint256 _x) internal pure returns (uint8 b) {
        return uint8(_x >> (8 * 31));
    }

    function decodeParamsList(uint256 _x) internal pure returns (uint32 a, uint32 b, uint32 c) {
        a = uint32(_x);
        b = uint32(_x >> (8 * 4));
        c = uint32(_x >> (8 * 8));
    }
}
// File: contracts/lib/misc/ERCProxy.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


contract ERCProxy {
    uint256 internal constant FORWARDING = 1;
    uint256 internal constant UPGRADEABLE = 2;

    function proxyType() public pure returns (uint256 proxyTypeId);
    function implementation() public view returns (address codeAddr);
}
// File: contracts/common/IsContract.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


contract IsContract {
    /*
    * NOTE: this should NEVER be used for authentication
    * (see pitfalls: https://github.com/fergarrui/ethereum-security/tree/master/contracts/extcodesize).
    *
    * This is only intended to be used as a sanity check that an address is actually a contract,
    * RATHER THAN an address not being a contract.
    */
    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/UnstructuredStorage.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


library UnstructuredStorage {
    function getStorageBool(bytes32 position) internal view returns (bool data) {
        assembly { data := sload(position) }
    }

    function getStorageAddress(bytes32 position) internal view returns (address data) {
        assembly { data := sload(position) }
    }

    function getStorageBytes32(bytes32 position) internal view returns (bytes32 data) {
        assembly { data := sload(position) }
    }

    function getStorageUint256(bytes32 position) internal view returns (uint256 data) {
        assembly { data := sload(position) }
    }

    function setStorageBool(bytes32 position, bool data) internal {
        assembly { sstore(position, data) }
    }

    function setStorageAddress(bytes32 position, address data) internal {
        assembly { sstore(position, data) }
    }

    function setStorageBytes32(bytes32 position, bytes32 data) internal {
        assembly { sstore(position, data) }
    }

    function setStorageUint256(bytes32 position, uint256 data) internal {
        assembly { sstore(position, data) }
    }
}
// File: contracts/common/Uint256Helpers.sol
library Uint256Helpers {
    uint256 private constant MAX_UINT64 = uint64(-1);

    string private constant ERROR_NUMBER_TOO_BIG = "UINT64_NUMBER_TOO_BIG";

    function toUint64(uint256 a) internal pure returns (uint64) {
        require(a <= MAX_UINT64, ERROR_NUMBER_TOO_BIG);
        return uint64(a);
    }
}
// File: contracts/common/TimeHelpers.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;



contract TimeHelpers {
    using Uint256Helpers for uint256;

    /**
    * @dev Returns the current block number.
    *      Using a function rather than `block.number` allows us to easily mock the block number in
    *      tests.
    */
    function getBlockNumber() internal view returns (uint256) {
        return block.number;
    }

    /**
    * @dev Returns the current block number, converted to uint64.
    *      Using a function rather than `block.number` allows us to easily mock the block number in
    *      tests.
    */
    function getBlockNumber64() internal view returns (uint64) {
        return getBlockNumber().toUint64();
    }

    /**
    * @dev Returns the current timestamp.
    *      Using a function rather than `block.timestamp` allows us to easily mock it in
    *      tests.
    */
    function getTimestamp() internal view returns (uint256) {
        return block.timestamp; // solium-disable-line security/no-block-members
    }

    /**
    * @dev Returns the current timestamp, converted to uint64.
    *      Using a function rather than `block.timestamp` allows us to easily mock it in
    *      tests.
    */
    function getTimestamp64() internal view returns (uint64) {
        return getTimestamp().toUint64();
    }
}
// File: contracts/common/Initializable.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;




contract Initializable is TimeHelpers {
    using UnstructuredStorage for bytes32;

    // keccak256("aragonOS.initializable.initializationBlock")
    bytes32 internal constant INITIALIZATION_BLOCK_POSITION = 0xebb05b386a8d34882b8711d156f463690983dc47815980fb82aeeff1aa43579e;

    string private constant ERROR_ALREADY_INITIALIZED = "INIT_ALREADY_INITIALIZED";
    string private constant ERROR_NOT_INITIALIZED = "INIT_NOT_INITIALIZED";

    modifier onlyInit {
        require(getInitializationBlock() == 0, ERROR_ALREADY_INITIALIZED);
        _;
    }

    modifier isInitialized {
        require(hasInitialized(), ERROR_NOT_INITIALIZED);
        _;
    }

    /**
    * @return Block number in which the contract was initialized
    */
    function getInitializationBlock() public view returns (uint256) {
        return INITIALIZATION_BLOCK_POSITION.getStorageUint256();
    }

    /**
    * @return Whether the contract has been initialized by the time of the current block
    */
    function hasInitialized() public view returns (bool) {
        uint256 initializationBlock = getInitializationBlock();
        return initializationBlock != 0 && getBlockNumber() >= initializationBlock;
    }

    /**
    * @dev Function to be called by top level contract after initialization has finished.
    */
    function initialized() internal onlyInit {
        INITIALIZATION_BLOCK_POSITION.setStorageUint256(getBlockNumber());
    }

    /**
    * @dev Function to be called by top level contract after initialization to enable the contract
    *      at a future block number rather than immediately.
    */
    function initializedAt(uint256 _blockNumber) internal onlyInit {
        INITIALIZATION_BLOCK_POSITION.setStorageUint256(_blockNumber);
    }
}
// File: contracts/common/Petrifiable.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;



contract Petrifiable is Initializable {
    // Use block UINT256_MAX (which should be never) as the initializable date
    uint256 internal constant PETRIFIED_BLOCK = uint256(-1);

    function isPetrified() public view returns (bool) {
        return getInitializationBlock() == PETRIFIED_BLOCK;
    }

    /**
    * @dev Function to be called by top level contract to prevent being initialized.
    *      Useful for freezing base contracts when they're used behind proxies.
    */
    function petrify() internal onlyInit {
        initializedAt(PETRIFIED_BLOCK);
    }
}
// File: contracts/lib/token/ERC20.sol
// See https://github.com/OpenZeppelin/openzeppelin-solidity/blob/a9f910d34f0ab33a1ae5e714f69f9596a02b4d91/contracts/token/ERC20/ERC20.sol

pragma solidity ^0.4.24;


/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 {
    function totalSupply() public view returns (uint256);

    function balanceOf(address _who) public view returns (uint256);

    function allowance(address _owner, address _spender)
        public view returns (uint256);

    function transfer(address _to, uint256 _value) public returns (bool);

    function approve(address _spender, uint256 _value)
        public returns (bool);

    function transferFrom(address _from, address _to, uint256 _value)
        public returns (bool);

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

    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}
// File: contracts/common/EtherTokenConstant.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;


// aragonOS and aragon-apps rely on address(0) to denote native ETH, in
// contracts where both tokens and ETH are accepted
contract EtherTokenConstant {
    address internal constant ETH = address(0);
}
// File: contracts/common/VaultRecoverable.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;






contract VaultRecoverable is IVaultRecoverable, EtherTokenConstant, IsContract {
    string private constant ERROR_DISALLOWED = "RECOVER_DISALLOWED";
    string private constant ERROR_VAULT_NOT_CONTRACT = "RECOVER_VAULT_NOT_CONTRACT";

    /**
     * @notice Send funds to recovery Vault. This contract should never receive funds,
     *         but in case it does, this function allows one to recover them.
     * @param _token Token balance to be sent to recovery vault.
     */
    function transferToVault(address _token) external {
        require(allowRecoverability(_token), ERROR_DISALLOWED);
        address vault = getRecoveryVault();
        require(isContract(vault), ERROR_VAULT_NOT_CONTRACT);

        if (_token == ETH) {
            vault.transfer(address(this).balance);
        } else {
            uint256 amount = ERC20(_token).balanceOf(this);
            ERC20(_token).transfer(vault, amount);
        }
    }

    /**
    * @dev By default deriving from AragonApp makes it recoverable
    * @param token Token address that would be recovered
    * @return bool whether the app allows the recovery
    */
    function allowRecoverability(address token) public view returns (bool) {
        return true;
    }

    // Cast non-implemented interface to be public so we can use it internally
    function getRecoveryVault() public view returns (address);
}
// File: contracts/apps/AppStorage.sol
/*
 * SPDX-License-Identitifer:    MIT
 */

pragma solidity ^0.4.24;




contract AppStorage {
    using UnstructuredStorage for bytes32;

    /* Hardcoded constants to save gas
    bytes32 internal constant KERNEL_POSITION = keccak256("aragonOS.appStorage.kernel");
    bytes32 internal constant APP_ID_POSITION = keccak256("aragonOS.appStorage.appId");
    */
    bytes32 internal constant KERNEL_POSITION = 0x4172f0f7d2289153072b0a6ca36959e0cbe2efc3afe50fc81636caa96338137b;
    bytes32 internal constant APP_ID_POSITION = 0xd625496217aa6a3453eecb9c3489dc5a53e6c67b444329ea2b2cbc9ff547639b;

    function kernel() public view returns (IKernel) {
        return IKernel(KERNEL_POSITION.getStorageAddress());
    }

    function appId() public view returns (bytes32) {
        return APP_ID_POSITION.getStorageBytes32();
    }

    function setKernel(IKernel _kernel) internal {
        KERNEL_POSITION.setStorageAddress(address(_kernel));
    }

    function setAppId(bytes32 _appId) internal {
        APP_ID_POSITION.setStorageBytes32(_appId);
    }
}
// File: contracts/common/DelegateProxy.sol
contract DelegateProxy is ERCProxy, IsContract {
    uint256 internal constant FWD_GAS_LIMIT = 10000;

    /**
    * @dev Performs a delegatecall and returns whatever the delegatecall returned (entire context execution will return!)
    * @param _dst Destination address to perform the delegatecall
    * @param _calldata Calldata for the delegatecall
    */
    function delegatedFwd(address _dst, bytes _calldata) internal {
        require(isContract(_dst));
        uint256 fwdGasLimit = FWD_GAS_LIMIT;

        assembly {
            let result := delegatecall(sub(gas, fwdGasLimit), _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/DepositableStorage.sol
contract DepositableStorage {
    using UnstructuredStorage for bytes32;

    // keccak256("aragonOS.depositableStorage.depositable")
    bytes32 internal constant DEPOSITABLE_POSITION = 0x665fd576fbbe6f247aff98f5c94a561e3f71ec2d3c988d56f12d342396c50cea;

    function isDepositable() public view returns (bool) {
        return DEPOSITABLE_POSITION.getStorageBool();
    }

    function setDepositable(bool _depositable) internal {
        DEPOSITABLE_POSITION.setStorageBool(_depositable);
    }
}
// File: contracts/common/DepositableDelegateProxy.sol
contract DepositableDelegateProxy is DepositableStorage, DelegateProxy {
    event ProxyDeposit(address sender, uint256 value);

    function () external payable {
        // send / transfer
        if (gasleft() < FWD_GAS_LIMIT) {
            require(msg.value > 0 && msg.data.length == 0);
            require(isDepositable());
            emit ProxyDeposit(msg.sender, msg.value);
        } else { // all calls except for send or transfer
            address target = implementation();
            delegatedFwd(target, msg.data);
        }
    }
}
// File: contracts/apps/AppProxyBase.sol
contract AppProxyBase is AppStorage, DepositableDelegateProxy, KernelNamespaceConstants {
    /**
    * @dev Initialize AppProxy
    * @param _kernel Reference to organization kernel for the app
    * @param _appId Identifier for app
    * @param _initializePayload Payload for call to be made after setup to initialize
    */
    constructor(IKernel _kernel, bytes32 _appId, bytes _initializePayload) public {
        setKernel(_kernel);
        setAppId(_appId);

        // Implicit check that kernel is actually a Kernel
        // The EVM doesn't actually provide a way for us to make sure, but we can force a revert to
        // occur if the kernel is set to 0x0 or a non-code address when we try to call a method on
        // it.
        address appCode = getAppBase(_appId);

        // If initialize payload is provided, it will be executed
        if (_initializePayload.length > 0) {
            require(isContract(appCode));
            // Cannot make delegatecall as a delegateproxy.delegatedFwd as it
            // returns ending execution context and halts contract deployment
            require(appCode.delegatecall(_initializePayload));
        }
    }

    function getAppBase(bytes32 _appId) internal view returns (address) {
        return kernel().getApp(KERNEL_APP_BASES_NAMESPACE, _appId);
    }
}
// File: contracts/apps/AppProxyUpgradeable.sol
contract AppProxyUpgradeable is AppProxyBase {
    /**
    * @dev Initialize AppProxyUpgradeable (makes it an upgradeable Aragon app)
    * @param _kernel Reference to organization kernel for the app
    * @param _appId Identifier for app
    * @param _initializePayload Payload for call to be made after setup to initialize
    */
    constructor(IKernel _kernel, bytes32 _appId, bytes _initializePayload)
        AppProxyBase(_kernel, _appId, _initializePayload)
        public // solium-disable-line visibility-first
    {

    }

    /**
     * @dev ERC897, the address the proxy would delegate calls to
     */
    function implementation() public view returns (address) {
        return getAppBase(appId());
    }

    /**
     * @dev ERC897, whether it is a forwarding (1) or an upgradeable (2) proxy
     */
    function proxyType() public pure returns (uint256 proxyTypeId) {
        return UPGRADEABLE;
    }
}
// File: contracts/apps/AppProxyPinned.sol
contract AppProxyPinned is IsContract, AppProxyBase {
    using UnstructuredStorage for bytes32;

    // keccak256("aragonOS.appStorage.pinnedCode")
    bytes32 internal constant PINNED_CODE_POSITION = 0xdee64df20d65e53d7f51cb6ab6d921a0a6a638a91e942e1d8d02df28e31c038e;

    /**
    * @dev Initialize AppProxyPinned (makes it an un-upgradeable Aragon app)
    * @param _kernel Reference to organization kernel for the app
    * @param _appId Identifier for app
    * @param _initializePayload Payload for call to be made after setup to initialize
    */
    constructor(IKernel _kernel, bytes32 _appId, bytes _initializePayload)
        AppProxyBase(_kernel, _appId, _initializePayload)
        public // solium-disable-line visibility-first
    {
        setPinnedCode(getAppBase(_appId));
        require(isContract(pinnedCode()));
    }

    /**
     * @dev ERC897, the address the proxy would delegate calls to
     */
    function implementation() public view returns (address) {
        return pinnedCode();
    }

    /**
     * @dev ERC897, whether it is a forwarding (1) or an upgradeable (2) proxy
     */
    function proxyType() public pure returns (uint256 proxyTypeId) {
        return FORWARDING;
    }

    function setPinnedCode(address _pinnedCode) internal {
        PINNED_CODE_POSITION.setStorageAddress(_pinnedCode);
    }

    function pinnedCode() internal view returns (address) {
        return PINNED_CODE_POSITION.getStorageAddress();
    }
}
// File: contracts/factory/AppProxyFactory.sol
contract AppProxyFactory {
    event NewAppProxy(address proxy, bool isUpgradeable, bytes32 appId);

    function newAppProxy(IKernel _kernel, bytes32 _appId) public returns (AppProxyUpgradeable) {
        return newAppProxy(_kernel, _appId, new bytes(0));
    }

    function newAppProxy(IKernel _kernel, bytes32 _appId, bytes _initializePayload) public returns (AppProxyUpgradeable) {
        AppProxyUpgradeable proxy = new AppProxyUpgradeable(_kernel, _appId, _initializePayload);
        emit NewAppProxy(address(proxy), true, _appId);
        return proxy;
    }

    function newAppProxyPinned(IKernel _kernel, bytes32 _appId) public returns (AppProxyPinned) {
        return newAppProxyPinned(_kernel, _appId, new bytes(0));
    }

    function newAppProxyPinned(IKernel _kernel, bytes32 _appId, bytes _initializePayload) public returns (AppProxyPinned) {
        AppProxyPinned proxy = new AppProxyPinned(_kernel, _appId, _initializePayload);
        emit NewAppProxy(address(proxy), false, _appId);
        return proxy;
    }
}
// File: contracts/kernel/Kernel.sol
// solium-disable-next-line max-len
contract Kernel is IKernel, KernelStorage, KernelAppIds, KernelNamespaceConstants, Petrifiable, IsContract, VaultRecoverable, AppProxyFactory, ACLSyntaxSugar {
    /* Hardcoded constants to save gas
    bytes32 public constant APP_MANAGER_ROLE = keccak256("APP_MANAGER_ROLE");
    */
    bytes32 public constant APP_MANAGER_ROLE = 0xb6d92708f3d4817afc106147d969e229ced5c46e65e0a5002a0d391287762bd0;

    string private constant ERROR_APP_NOT_CONTRACT = "KERNEL_APP_NOT_CONTRACT";
    string private constant ERROR_INVALID_APP_CHANGE = "KERNEL_INVALID_APP_CHANGE";
    string private constant ERROR_AUTH_FAILED = "KERNEL_AUTH_FAILED";

    /**
    * @dev Constructor that allows the deployer to choose if the base instance should be petrified immediately.
    * @param _shouldPetrify Immediately petrify this instance so that it can never be initialized
    */
    constructor(bool _shouldPetrify) public {
        if (_shouldPetrify) {
            petrify();
        }
    }

    /**
    * @dev Initialize can only be called once. It saves the block number in which it was initialized.
    * @notice Initializes a kernel instance along with its ACL and sets `_permissionsCreator` as the entity that can create other permissions
    * @param _baseAcl Address of base ACL app
    * @param _permissionsCreator Entity that will be given permission over createPermission
    */
    function initialize(IACL _baseAcl, address _permissionsCreator) public onlyInit {
        initialized();

        // Set ACL base
        _setApp(KERNEL_APP_BASES_NAMESPACE, KERNEL_DEFAULT_ACL_APP_ID, _baseAcl);

        // Create ACL instance and attach it as the default ACL app
        IACL acl = IACL(newAppProxy(this, KERNEL_DEFAULT_ACL_APP_ID));
        acl.initialize(_permissionsCreator);
        _setApp(KERNEL_APP_ADDR_NAMESPACE, KERNEL_DEFAULT_ACL_APP_ID, acl);

        recoveryVaultAppId = KERNEL_DEFAULT_VAULT_APP_ID;
    }

    /**
    * @dev Create a new instance of an app linked to this kernel
    * @notice Create a new upgradeable instance of `_appId` app linked to the Kernel, setting its code to `_appBase`
    * @param _appId Identifier for app
    * @param _appBase Address of the app's base implementation
    * @return AppProxy instance
    */
    function newAppInstance(bytes32 _appId, address _appBase)
        public
        auth(APP_MANAGER_ROLE, arr(KERNEL_APP_BASES_NAMESPACE, _appId))
        returns (ERCProxy appProxy)
    {
        return newAppInstance(_appId, _appBase, new bytes(0), false);
    }

    /**
    * @dev Create a new instance of an app linked to this kernel and set its base
    *      implementation if it was not already set
    * @notice Create a new upgradeable instance of `_appId` app linked to the Kernel, setting its code to `_appBase`. `_setDefault ? 'Also sets it as the default app instance.':''`
    * @param _appId Identifier for app
    * @param _appBase Address of the app's base implementation
    * @param _initializePayload Payload for call made by the proxy during its construction to initialize
    * @param _setDefault Whether the app proxy app is the default one.
    *        Useful when the Kernel needs to know of an instance of a particular app,
    *        like Vault for escape hatch mechanism.
    * @return AppProxy instance
    */
    function newAppInstance(bytes32 _appId, address _appBase, bytes _initializePayload, bool _setDefault)
        public
        auth(APP_MANAGER_ROLE, arr(KERNEL_APP_BASES_NAMESPACE, _appId))
        returns (ERCProxy appProxy)
    {
        _setAppIfNew(KERNEL_APP_BASES_NAMESPACE, _appId, _appBase);
        appProxy = newAppProxy(this, _appId, _initializePayload);
        // By calling setApp directly and not the internal functions, we make sure the params are checked
        // and it will only succeed if sender has permissions to set something to the namespace.
        if (_setDefault) {
            setApp(KERNEL_APP_ADDR_NAMESPACE, _appId, appProxy);
        }
    }

    /**
    * @dev Create a new pinned instance of an app linked to this kernel
    * @notice Create a new non-upgradeable instance of `_appId` app linked to the Kernel, setting its code to `_appBase`.
    * @param _appId Identifier for app
    * @param _appBase Address of the app's base implementation
    * @return AppProxy instance
    */
    function newPinnedAppInstance(bytes32 _appId, address _appBase)
        public
        auth(APP_MANAGER_ROLE, arr(KERNEL_APP_BASES_NAMESPACE, _appId))
        returns (ERCProxy appProxy)
    {
        return newPinnedAppInstance(_appId, _appBase, new bytes(0), false);
    }

    /**
    * @dev Create a new pinned instance of an app linked to this kernel and set
    *      its base implementation if it was not already set
    * @notice Create a new non-upgradeable instance of `_appId` app linked to the Kernel, setting its code to `_appBase`. `_setDefault ? 'Also sets it as the default app instance.':''`
    * @param _appId Identifier for app
    * @param _appBase Address of the app's base implementation
    * @param _initializePayload Payload for call made by the proxy during its construction to initialize
    * @param _setDefault Whether the app proxy app is the default one.
    *        Useful when the Kernel needs to know of an instance of a particular app,
    *        like Vault for escape hatch mechanism.
    * @return AppProxy instance
    */
    function newPinnedAppInstance(bytes32 _appId, address _appBase, bytes _initializePayload, bool _setDefault)
        public
        auth(APP_MANAGER_ROLE, arr(KERNEL_APP_BASES_NAMESPACE, _appId))
        returns (ERCProxy appProxy)
    {
        _setAppIfNew(KERNEL_APP_BASES_NAMESPACE, _appId, _appBase);
        appProxy = newAppProxyPinned(this, _appId, _initializePayload);
        // By calling setApp directly and not the internal functions, we make sure the params are checked
        // and it will only succeed if sender has permissions to set something to the namespace.
        if (_setDefault) {
            setApp(KERNEL_APP_ADDR_NAMESPACE, _appId, appProxy);
        }
    }

    /**
    * @dev Set the resolving address of an app instance or base implementation
    * @notice Set the resolving address of `_appId` in namespace `_namespace` to `_app`
    * @param _namespace App namespace to use
    * @param _appId Identifier for app
    * @param _app Address of the app instance or base implementation
    * @return ID of app
    */
    function setApp(bytes32 _namespace, bytes32 _appId, address _app)
        public
        auth(APP_MANAGER_ROLE, arr(_namespace, _appId))
    {
        _setApp(_namespace, _appId, _app);
    }

    /**
    * @dev Set the default vault id for the escape hatch mechanism
    * @param _recoveryVaultAppId Identifier of the recovery vault app
    */
    function setRecoveryVaultAppId(bytes32 _recoveryVaultAppId)
        public
        auth(APP_MANAGER_ROLE, arr(KERNEL_APP_ADDR_NAMESPACE, _recoveryVaultAppId))
    {
        recoveryVaultAppId = _recoveryVaultAppId;
    }

    // External access to default app id and namespace constants to mimic default getters for constants
    /* solium-disable function-order, mixedcase */
    function CORE_NAMESPACE() external pure returns (bytes32) { return KERNEL_CORE_NAMESPACE; }
    function APP_BASES_NAMESPACE() external pure returns (bytes32) { return KERNEL_APP_BASES_NAMESPACE; }
    function APP_ADDR_NAMESPACE() external pure returns (bytes32) { return KERNEL_APP_ADDR_NAMESPACE; }
    function KERNEL_APP_ID() external pure returns (bytes32) { return KERNEL_CORE_APP_ID; }
    function DEFAULT_ACL_APP_ID() external pure returns (bytes32) { return KERNEL_DEFAULT_ACL_APP_ID; }
    /* solium-enable function-order, mixedcase */

    /**
    * @dev Get the address of an app instance or base implementation
    * @param _namespace App namespace to use
    * @param _appId Identifier for app
    * @return Address of the app
    */
    function getApp(bytes32 _namespace, bytes32 _appId) public view returns (address) {
        return apps[_namespace][_appId];
    }

    /**
    * @dev Get the address of the recovery Vault instance (to recover funds)
    * @return Address of the Vault
    */
    function getRecoveryVault() public view returns (address) {
        return apps[KERNEL_APP_ADDR_NAMESPACE][recoveryVaultAppId];
    }

    /**
    * @dev Get the installed ACL app
    * @return ACL app
    */
    function acl() public view returns (IACL) {
        return IACL(getApp(KERNEL_APP_ADDR_NAMESPACE, KERNEL_DEFAULT_ACL_APP_ID));
    }

    /**
    * @dev Function called by apps to check ACL on kernel or to check permission status
    * @param _who Sender of the original call
    * @param _where Address of the app
    * @param _what Identifier for a group of actions in app
    * @param _how Extra data for ACL auth
    * @return Boolean indicating whether the ACL allows the role or not.
    *         Always returns false if the kernel hasn't been initialized yet.
    */
    function hasPermission(address _who, address _where, bytes32 _what, bytes _how) public view returns (bool) {
        IACL defaultAcl = acl();
        return address(defaultAcl) != address(0) && // Poor man's initialization check (saves gas)
            defaultAcl.hasPermission(_who, _where, _what, _how);
    }

    function _setApp(bytes32 _namespace, bytes32 _appId, address _app) internal {
        require(isContract(_app), ERROR_APP_NOT_CONTRACT);
        apps[_namespace][_appId] = _app;
        emit SetApp(_namespace, _appId, _app);
    }

    function _setAppIfNew(bytes32 _namespace, bytes32 _appId, address _app) internal {
        address app = getApp(_namespace, _appId);
        if (app != address(0)) {
            // The only way to set an app is if it passes the isContract check, so no need to check it again
            require(app == _app, ERROR_INVALID_APP_CHANGE);
        } else {
            _setApp(_namespace, _appId, _app);
        }
    }

    modifier auth(bytes32 _role, uint256[] memory params) {
        // Force cast the uint256[] into a bytes array, by overwriting its length
        // Note that the bytes array doesn't need to be initialized as we immediately overwrite it
        // with params and a new length, and params becomes invalid from this point forward
        bytes memory how;
        uint256 byteLength = params.length * 32;
        assembly {
            how := params
            mstore(how, byteLength)
        }

        require(hasPermission(msg.sender, address(this), _role, how), ERROR_AUTH_FAILED);
        _;
    }
}

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Contract ABI

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Contract Creation Code

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000000000000000000000000001

-----Decoded View---------------
Arg [0] : _shouldPetrify (bool): True

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000001

Swarm Source

bzzr://6979da1275d5482ca820648144ae85ca53310f13d305a23d8fcf83087f3b19a7

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.

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