File content as of revision 3:5b8623c17906:

/*
 * Copyright (c) 2015 ARM Limited. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 * Licensed under the Apache License, Version 2.0 (the License); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __SIMPLECLIENT_H__
#define __SIMPLECLIENT_H__

#include "mbed-client/m2minterfacefactory.h"
#include "mbed-client/m2mdevice.h"
#include "mbed-client/m2minterfaceobserver.h"
#include "mbed-client/m2minterface.h"
#include "mbed-client/m2mobject.h"
#include "mbed-client/m2mobjectinstance.h"
#include "mbed-client/m2mresource.h"
#include "mbed-client/m2mconfig.h"
#include "mbed-client/m2mblockmessage.h"
#include "security.h"
#include "mbed.h"

#define STRINGIFY(s) #s

M2MInterface::NetworkStack NETWORK_STACK = M2MInterface::LwIP_IPv4;

M2MInterface::BindingMode SOCKET_MODE = M2MInterface::UDP;

struct MbedClientDevice {
    const char* Manufacturer;
    const char* Type;
    const char* ModelNumber;
    const char* SerialNumber;
};

/*
* Wrapper for mbed client stack that handles all callbacks, error handling, and
* other shenanigans to make the mbed client stack easier to use.
*
* The end user should only have to care about configuring the parameters at the
* top of this file and making sure they add the security.h file correctly.
*/
class MbedClient: public M2MInterfaceObserver {
    
public:

    /*
     * Constructor for MbedClient object, initialize private variables
     */
    MbedClient(struct MbedClientDevice device)
    {
        _interface = NULL;
        _bootstrapped = false;
        _error = false;
        _registered = false;
        _unregistered = false;
        _register_security = NULL;
        _value = 0;
        _object = NULL;
        _device = device;
    }

    /*
     * Destructor for MbedClient object, you can ignore this
     */
    ~MbedClient()
    {
        if (_interface) {
            delete _interface;
        }
        if (_register_security) {
            delete _register_security;
        }
    }

    /*
     *  Creates M2MInterface using which endpoint can
     *  setup its name, resource type, life time, connection mode,
     *  Currently only LwIPv4 is supported.
     */
    void create_interface(const char *server_address, void *handler=NULL)
    {
        // Randomizing listening port for Certificate mode connectivity
        _server_address = server_address;
        uint16_t port = 0; // Network interface will randomize with port 0

        // Create mDS interface object, this is the base object everything else attaches to
        _interface = M2MInterfaceFactory::create_interface(*this,
                                                          MBED_ENDPOINT_NAME,       // endpoint name string
                                                          "test",                   // endpoint type string
                                                          100,                      // lifetime
                                                          port,                     // listen port
                                                          MBED_DOMAIN,              // domain string
                                                          SOCKET_MODE,              // binding mode
                                                          NETWORK_STACK,            // network stack
                                                          "");                      // context address string
        const char *binding_mode = (SOCKET_MODE == M2MInterface::UDP) ? "UDP" : "TCP";
        printf("SOCKET_MODE : %s\n", binding_mode);
        printf("Connecting to %s\n", server_address);

        if (_interface) {
            _interface->set_platform_network_handler(handler);
        }
    }

    /*
     *  Check private variable to see if the registration was sucessful or not
     */
    bool register_successful()
    {
        return _registered;
    }

    /*
     *  Check private variable to see if un-registration was sucessful or not
     */
    bool unregister_successful()
    {
        return _unregistered;
    }

    /*
     *  Creates register server object with mbed device server address and other parameters
     *  required for client to connect to mbed device server.
     */
    M2MSecurity* create_register_object()
    {
        // Create security object using the interface factory.
        // this will generate a security ObjectID and ObjectInstance
        M2MSecurity *security = M2MInterfaceFactory::create_security(M2MSecurity::M2MServer);

        // Make sure security ObjectID/ObjectInstance was created successfully
        if (security) {
            // Add ResourceID's and values to the security ObjectID/ObjectInstance
            security->set_resource_value(M2MSecurity::M2MServerUri, _server_address);
            security->set_resource_value(M2MSecurity::SecurityMode, M2MSecurity::Certificate);
            security->set_resource_value(M2MSecurity::ServerPublicKey, SERVER_CERT, sizeof(SERVER_CERT) - 1);
            security->set_resource_value(M2MSecurity::PublicKey, CERT, sizeof(CERT) - 1);
            security->set_resource_value(M2MSecurity::Secretkey, KEY, sizeof(KEY) - 1);
        }
        return security;
    }

    /*
     * Creates device object which contains mandatory resources linked with
     * device endpoint.
     */
    M2MDevice* create_device_object()
    {
        // Create device objectID/ObjectInstance
        M2MDevice *device = M2MInterfaceFactory::create_device();
        // Make sure device object was created successfully
        if (device) {
            // Add resourceID's to device objectID/ObjectInstance
            device->create_resource(M2MDevice::Manufacturer, _device.Manufacturer);
            device->create_resource(M2MDevice::DeviceType, _device.Type);
            device->create_resource(M2MDevice::ModelNumber, _device.ModelNumber);
            device->create_resource(M2MDevice::SerialNumber, _device.SerialNumber);
        }
        return device;
    }

    /*
     * Register an object
     */
    void test_register(M2MSecurity *register_object, M2MObjectList object_list)
    {
        if (_interface) {
            // Register function
            _interface->register_object(register_object, object_list);
        }
    }

    /*
     * Unregister all objects
     */
    void test_unregister()
    {
        if (_interface) {
            // Unregister function
            _interface->unregister_object(NULL); // NULL will unregister all objects
        }
    }

    /*
     * Callback from mbed client stack when the bootstrap
     * is successful, it returns the mbed Device Server object
     * which will be used for registering the resources to
     * mbed Device server.
     */
    void bootstrap_done(M2MSecurity *server_object)
    {
        if (server_object) {
            _bootstrapped = true;
            _error = false;
            printf("Bootstrapped\n");
        }
    }

    /*
     * Callback from mbed client stack when the registration
     * is successful, it returns the mbed Device Server object
     * to which the resources are registered and registered objects.
     */
    void object_registered(M2MSecurity */*security_object*/, const M2MServer & /*server_object*/)
    {
        _registered = true;
        _unregistered = false;
        printf("Registered object successfully!\n");
    }

    /*
     * Callback from mbed client stack when the unregistration
     * is successful, it returns the mbed Device Server object
     * to which the resources were unregistered.
     */
    void object_unregistered(M2MSecurity */*server_object*/)
    {
        printf("Unregistered object successfully\n");
        _unregistered = true;
        _registered = false;
    }

    /*
     * Callback from mbed client stack when registration is updated
     */
    void registration_updated(M2MSecurity */*security_object*/, const M2MServer & /*server_object*/)
    {
        /* The registration is updated automatically and frequently by the
        *  mbed client stack. This print statement is turned off because it
        *  tends to happen a lot.
        */
        //printf("Registration updated\n");
    }

    /*
     * Callback from mbed client stack if any error is encountered
     * during any of the LWM2M operations. Error type is passed in
     * the callback.
     */
    void error(M2MInterface::Error error)
    {
        _error = true;
        switch (error){
            case M2MInterface::AlreadyExists:
                printf("[ERROR:] M2MInterface::AlreadyExist\n");
                break;
            case M2MInterface::BootstrapFailed:
                printf("[ERROR:] M2MInterface::BootstrapFailed\n");
                break;
            case M2MInterface::InvalidParameters:
                printf("[ERROR:] M2MInterface::InvalidParameters\n");
                break;
            case M2MInterface::NotRegistered:
                printf("[ERROR:] M2MInterface::NotRegistered\n");
                break;
            case M2MInterface::Timeout:
                printf("[ERROR:] M2MInterface::Timeout\n");
                break;
            case M2MInterface::NetworkError:
                printf("[ERROR:] M2MInterface::NetworkError\n");
                break;
            case M2MInterface::ResponseParseFailed:
                printf("[ERROR:] M2MInterface::ResponseParseFailed\n");
                break;
            case M2MInterface::UnknownError:
                printf("[ERROR:] M2MInterface::UnknownError\n");
                break;
            case M2MInterface::MemoryFail:
                printf("[ERROR:] M2MInterface::MemoryFail\n");
                break;
            case M2MInterface::NotAllowed:
                printf("[ERROR:] M2MInterface::NotAllowed\n");
                break;
            case M2MInterface::SecureConnectionFailed:
                printf("[ERROR:] M2MInterface::SecureConnectionFailed\n");
                break;
            case M2MInterface::DnsResolvingFailed:
                printf("[ERROR:] M2MInterface::DnsResolvingFailed\n");
                break;
            default:
                break;
        }
    }

    /*
     * Callback from mbed client stack if any value has changed
     *  during PUT operation. Object and its type is passed in
     *  the callback.
     *  BaseType enum from m2mbase.h
     *       Object = 0x0, Resource = 0x1, ObjectInstance = 0x2, ResourceInstance = 0x3
     */
    void value_updated(M2MBase *base, M2MBase::BaseType type)
    {
        printf("PUT request received!");
        printf("Name :'%s', \nPath : '%s', \nType : '%d' (0 for Object, 1 for Resource), \nType : '%s'\n",
               base->name(),
               base->uri_path(),
               type,
               base->resource_type());
    }

    /*
     * Update the registration period
     */
    void test_update_register()
    {
        if (_registered) {
            _interface->update_registration(_register_security, 100);
        }
    }

    /*
     * Manually configure the security object private variable
     */
   void set_register_object(M2MSecurity *register_object)
   {
        if (_register_security == NULL) {
            _register_security = register_object;
        }
    }

private:

    /*
     *  Private variables used in class
     */
    M2MInterface             *_interface;
    M2MSecurity              *_register_security;
    M2MObject                *_object;
    volatile bool            _bootstrapped;
    volatile bool            _error;
    volatile bool            _registered;
    volatile bool            _unregistered;
    int                      _value;
    struct MbedClientDevice  _device;
    String                   _server_address;
};

#endif // __SIMPLECLIENT_H__