Ram Gandikota
A metronome using the FRDM K64F board
Diff: mbed-client/source/include/m2mnsdlinterface.h
- Revision:
- 0:a7a43371b306
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-client/source/include/m2mnsdlinterface.h Sun May 14 18:40:18 2017 +0000
@@ -0,0 +1,380 @@
+/*
+ * 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 M2MNSDLINTERFACE_H
+#define M2MNSDLINTERFACE_H
+
+#include "mbed-client/m2mvector.h"
+#include "mbed-client/m2mconfig.h"
+#include "mbed-client/m2minterface.h"
+#include "mbed-client/m2mtimerobserver.h"
+#include "mbed-client/m2mobservationhandler.h"
+#include "mbed-client/m2mbase.h"
+#include "mbed-client/m2mserver.h"
+#include "include/nsdllinker.h"
+
+//FORWARD DECLARARTION
+class M2MSecurity;
+class M2MObject;
+class M2MObjectInstance;
+class M2MResource;
+class M2MResourceInstance;
+class M2MNsdlObserver;
+class M2MServer;
+class M2MTimer;
+
+typedef Vector<M2MObject *> M2MObjectList;
+
+/**
+ * @brief M2MNsdlInterface
+ * Class which interacts between mbed Client C++ Library and mbed-client-c library.
+ */
+class M2MNsdlInterface : public M2MTimerObserver,
+ public M2MObservationHandler
+{
+private:
+ // Prevents the use of assignment operator by accident.
+ M2MNsdlInterface& operator=( const M2MNsdlInterface& /*other*/ );
+
+ // Prevents the use of copy constructor by accident
+ M2MNsdlInterface( const M2MNsdlInterface& /*other*/ );
+
+public:
+ /**
+ * @brief Constructor
+ * @param observer, Observer to pass the event callbacks from nsdl library.
+ */
+ M2MNsdlInterface(M2MNsdlObserver &observer);
+
+ /**
+ * @brief Destructor
+ */
+ virtual ~M2MNsdlInterface();
+
+ /**
+ * @brief Creates endpoint object for the nsdl stack.
+ * @param endpoint_name, Endpoint name of the client.
+ * @param endpoint_type, Endpoint type of the client.
+ * @param life_time, Life time of the client in seconds
+ * @param domain, Domain of the client.
+ * @param mode, Binding mode of the client, default is UDP
+ * @param context_address, Context address default is empty.
+ */
+ void create_endpoint(const String &endpoint_name,
+ const String &endpoint_type,
+ const int32_t life_time,
+ const String &domain,
+ const uint8_t mode,
+ const String &context_address);
+
+ /**
+ * @brief Deletes the endpoint.
+ */
+ void delete_endpoint();
+
+ /**
+ * @brief Creates the NSDL structure for the registered objectlist.
+ * @param object_list, List of objects to be registered.
+ * @return true if structure created successfully else false.
+ */
+ bool create_nsdl_list_structure(const M2MObjectList &object_list);
+
+ /**
+ * @brief Removed the NSDL resource for the given resource.
+ * @param base, Resource to be removed.
+ * @return true if removed successfully else false.
+ */
+ bool remove_nsdl_resource(M2MBase *base);
+
+ /**
+ * @brief Creates the bootstrap object.
+ * @param address Bootstrap address.
+ * @return true if created and sent successfully else false.
+ */
+ bool create_bootstrap_resource(sn_nsdl_addr_s *address, const String &bootstrap_endpoint_name);
+
+ /**
+ * @brief Sends the register message to the server.
+ * @param address M2MServer address.
+ * @param address_length M2MServer address length.
+ * @param port M2MServer port.
+ * @param address_type IP Address type.
+ * @return true if register sent successfully else false.
+ */
+ bool send_register_message(uint8_t* address,
+ uint8_t address_length,
+ const uint16_t port,
+ sn_nsdl_addr_type_e address_type);
+
+ /**
+ * @brief Sends the update registration message to the server.
+ * @param lifetime, Updated lifetime value in seconds.
+ * @return true if sent successfully else false.
+ *
+ */
+ bool send_update_registration(const uint32_t lifetime = 0);
+
+ /**
+ * @brief Sends unregister message to the server.
+ * @return true if unregister sent successfully else false.
+ */
+ bool send_unregister_message();
+
+ /**
+ * @brief Memory Allocation required for libCoap.
+ * @param size, Size of memory to be reserved.
+ */
+ static void* memory_alloc(uint16_t size);
+
+ /**
+ * @brief Memory free functions required for libCoap
+ * @param ptr, Object whose memory needs to be freed.
+ */
+ static void memory_free(void *ptr);
+
+ /**
+ * @brief Callback from nsdl library to inform the data is ready
+ * to be sent to server.
+ * @param nsdl_handle, Handler for the nsdl structure for this endpoint
+ * @param protocol, Protocol format of the data
+ * @param data, Data to be sent.
+ * @param data_len, Size of the data to be sent
+ * @param address, server address where data has to be sent.
+ * @return 1 if successful else 0.
+ */
+ uint8_t send_to_server_callback(struct nsdl_s * nsdl_handle,
+ sn_nsdl_capab_e protocol,
+ uint8_t *data,
+ uint16_t data_len,
+ sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Callback from nsdl library to inform the data which is
+ * received from server for the client has been converted to coap message.
+ * @param nsdl_handle, Handler for the nsdl structure for this endpoint
+ * @param coap_header, Coap message formed from data.
+ * @param address, Server address from where the data is received.
+ * @return 1 if successful else 0.
+ */
+ uint8_t received_from_server_callback(struct nsdl_s * nsdl_handle,
+ sn_coap_hdr_s *coap_header,
+ sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Callback from nsdl library to inform the data which is
+ * received from server for the resources has been converted to coap message.
+ * @param nsdl_handle, Handler for the nsdl resource structure for this endpoint..
+ * @param coap_header, Coap message formed from data.
+ * @param address, Server address from where the data is received.
+ * @param nsdl_capab, Protocol for the message, currently only coap is supported.
+ * @return 1 if successful else 0.
+ */
+ uint8_t resource_callback(struct nsdl_s *nsdl_handle, sn_coap_hdr_s *coap,
+ sn_nsdl_addr_s *address,
+ sn_nsdl_capab_e nsdl_capab);
+
+ /**
+ * @brief Callback when there is data received from server and needs to be processed.
+ * @param data, data received from server.
+ * @param data_size, data size received from server.
+ * @param addres, address structure of the server.
+ * @return true if successfully processed else false.
+ */
+ bool process_received_data(uint8_t *data,
+ uint16_t data_size,
+ sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Stops all the timers in case there is any errors.
+ */
+ void stop_timers();
+
+ /**
+ * @brief Returns nsdl handle.
+ * @return ndsl handle
+ */
+ nsdl_s* get_nsdl_handle();
+
+ /**
+ * @brief Get endpoint name
+ * @return endpoint name
+ */
+ const String& endpoint_name() const;
+
+protected: // from M2MTimerObserver
+
+ virtual void timer_expired(M2MTimerObserver::Type type);
+
+protected: // from M2MObservationHandler
+
+ virtual void observation_to_be_sent(M2MBase *object,
+ uint16_t obs_number,
+ m2m::Vector<uint16_t> changed_instance_ids,
+ bool send_object = false);
+
+ virtual void resource_to_be_deleted(M2MBase* base);
+
+ virtual void value_updated(M2MBase *base, const String &object_name);
+
+ virtual void remove_object(M2MBase *object);
+
+ virtual void send_delayed_response(M2MBase *base);
+
+private:
+
+ /**
+ * @brief Initializes all the nsdl library component to be usable.
+ * @return true if initialization is successful else false.
+ */
+ bool initialize();
+
+ bool add_object_to_list(M2MObject *object);
+
+ bool create_nsdl_object_structure(M2MObject *object);
+
+ bool create_nsdl_object_instance_structure(M2MObjectInstance *object_instance);
+
+ bool create_nsdl_resource_structure(M2MResource *resource,
+ bool multiple_instances = false);
+
+ bool create_nsdl_resource(M2MBase *base);
+
+ String coap_to_string(uint8_t *coap_data_ptr,
+ int coap_data_ptr_length);
+
+ void execute_nsdl_process_loop();
+
+ uint64_t registration_time();
+
+ M2MBase* find_resource(const String &object,
+ uint8_t *token = NULL,
+ uint8_t token_len = 0);
+
+ M2MBase* find_resource(const M2MObject *object,
+ const String &object_instance,
+ uint8_t *token = NULL,
+ uint8_t token_len = 0);
+
+ M2MBase* find_resource(const M2MObjectInstance *object_instance,
+ const String &resource_instance,
+ uint8_t *token = NULL,
+ uint8_t token_len = 0);
+
+ M2MBase* find_resource(const M2MResource *resource,
+ const String &object_name,
+ const String &resource_instance,
+ uint8_t *token = NULL,
+ uint8_t token_len = 0);
+
+ bool object_present(M2MObject * object) const;
+
+ M2MInterface::Error interface_error(sn_coap_hdr_s *coap_header);
+
+ void send_object_observation(M2MObject *object,
+ uint16_t obs_number,
+ m2m::Vector<uint16_t> changed_instance_ids,
+ bool send_object);
+
+ void send_object_instance_observation(M2MObjectInstance *object_instance,
+ uint16_t obs_number);
+
+ void send_resource_observation(M2MResource *resource, uint16_t obs_number);
+
+ void send_notification(uint8_t *token,
+ uint8_t token_length,
+ uint8_t *value,
+ uint32_t value_length,
+ uint16_t observation,
+ uint32_t max_age,
+ uint8_t coap_content_type);
+
+ /**
+ * @brief Allocate (size + 1) amount of memory, copy size bytes into
+ * it and add zero termination.
+ * @param source Source string to copy, may not be NULL.
+ * @param size The size of memory to be reserved.
+ */
+ static uint8_t* alloc_string_copy(const uint8_t* source, uint16_t size);
+
+ /**
+ * @brief Utility method to convert given lifetime int to ascii
+ * and allocate a buffer for it and set it to _endpoint->lifetime_ptr.
+ * @param lifetime A new value for lifetime.
+ */
+ void set_endpoint_lifetime_buffer(int lifetime);
+
+ /**
+ * @brief Handle incoming bootstrap PUT message.
+ * @param coap_header, Received CoAP message
+ * @param address, Server address
+ */
+ void handle_bootstrap_put_message(sn_coap_hdr_s *coap_header, sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Handle bootstrap finished message.
+ * @param coap_header, Received CoAP message
+ * @param address, Server address
+ */
+ void handle_bootstrap_finished(sn_coap_hdr_s *coap_header,sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Handle bootstrap delete message.
+ * @param coap_header, Received CoAP message
+ * @param address, Server address
+ */
+ void handle_bootstrap_delete(sn_coap_hdr_s *coap_header,sn_nsdl_addr_s *address);
+
+ /**
+ * @brief Parse bootstrap TLV message.
+ * @param coap_header, Received CoAP message
+ * @return True if parsing was succesful else false
+ */
+ bool parse_bootstrap_message(sn_coap_hdr_s *coap_header, bool is_security_object);
+
+ /**
+ * @brief Parse bootstrap TLV message.
+ * @param coap_header, Received CoAP message
+ * @return True if parsing was succesful else false
+ */
+ bool validate_security_object();
+
+ /**
+ * @brief Handle bootstrap errors.
+ */
+ void handle_bootstrap_error();
+
+private:
+
+ M2MNsdlObserver &_observer;
+ M2MObjectList _object_list;
+ sn_nsdl_ep_parameters_s *_endpoint;
+ nsdl_s *_nsdl_handle;
+ M2MSecurity *_security; // Not owned
+ M2MServer _server;
+ M2MTimer *_nsdl_exceution_timer;
+ M2MTimer *_registration_timer;
+ sn_nsdl_addr_s _sn_nsdl_address;
+ String _endpoint_name;
+ uint32_t _counter_for_nsdl;
+ uint16_t _bootstrap_id;
+ bool _unregister_ongoing;
+ bool _identity_accepted;
+
+friend class Test_M2MNsdlInterface;
+
+};
+
+#endif // M2MNSDLINTERFACE_H
+