Address io1ca3dqw7s8rcq4d40ky3y0hcgvgnxgc6fm7dn87

/** 
 *  SourceUnit: /Users/mz/Codes/my-ws-app/blockchain/contracts/DeviceBinding.sol
*/
            
////// SPDX-License-Identifier-FLATTEN-SUPPRESS-WARNING: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}




/** 
 *  SourceUnit: /Users/mz/Codes/my-ws-app/blockchain/contracts/DeviceBinding.sol
*/
            
////// SPDX-License-Identifier-FLATTEN-SUPPRESS-WARNING: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

////import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}




/** 
 *  SourceUnit: /Users/mz/Codes/my-ws-app/blockchain/contracts/DeviceBinding.sol
*/
            
////// SPDX-License-Identifier-FLATTEN-SUPPRESS-WARNING: MIT
pragma solidity ^0.8.0;

////import "@openzeppelin/contracts/access/Ownable.sol";

contract DevicesRegistry is Ownable {
    event DeviceRegistered(bytes32 indexed _deviceId);
    event DeviceDeleted(bytes32 indexed _deviceId);
    event DeviceSuspended(bytes32 indexed _deviceId);
    event DeviceActivated(bytes32 indexed _deviceId);

    struct Device {
        bool isRegistered;
        bool isActive;
    }

    mapping(bytes32 => Device) public devices;

    constructor() {}

    modifier onlyRegisteredDevice(bytes32 _deviceId) {
        require(
            devices[_deviceId].isRegistered,
            "Data Source is not registered"
        );
        _;
    }

    modifier onlyUnregisteredDevice(bytes32 _deviceId) {
        require(
            !devices[_deviceId].isRegistered,
            "Data Source already registered"
        );
        _;
    }

    modifier onlyActiveDevice(bytes32 _deviceId) {
        require(devices[_deviceId].isActive, "Data Source is suspended");
        _;
    }

    modifier onlySuspendedDevice(bytes32 _deviceId) {
        require(!devices[_deviceId].isActive, "Data Source is active");
        _;
    }

    function registerDevice(
        bytes32 _deviceId
    ) public onlyOwner onlyUnregisteredDevice(_deviceId) {
        devices[_deviceId] = Device(true, true);
        emit DeviceRegistered(_deviceId);
    }

    function removeDevice(
        bytes32 _deviceId
    ) public onlyOwner onlyRegisteredDevice(_deviceId) {
        delete devices[_deviceId];
        emit DeviceDeleted(_deviceId);
    }

    function suspendDevice(
        bytes32 _deviceId
    )
        public
        onlyOwner
        onlyRegisteredDevice(_deviceId)
        onlyActiveDevice(_deviceId)
    {
        devices[_deviceId].isActive = false;
        emit DeviceSuspended(_deviceId);
    }

    function activateDevice(
        bytes32 _deviceId
    )
        public
        onlyOwner
        onlyRegisteredDevice(_deviceId)
        onlySuspendedDevice(_deviceId)
    {
        devices[_deviceId].isActive = true;
        emit DeviceActivated(_deviceId);
    }

    function isAuthorizedDevice(
        bytes32 _deviceId
    )
        public
        view
        onlyRegisteredDevice(_deviceId)
        onlyActiveDevice(_deviceId)
        returns (bool)
    {
        return true;
    }
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"DeviceActivated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"DeviceDeleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"DeviceRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"DeviceSuspended","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"activateDevice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"devices","outputs":[{"internalType":"bool","name":"isRegistered","type":"bool"},{"internalType":"bool","name":"isActive","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"isAuthorizedDevice","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"registerDevice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"removeDevice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_deviceId","type":"bytes32"}],"name":"suspendDevice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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