b9caaf217e
A proper way to match a Security object instance with a Server object instance is via Short Server ID resource. Both coupled object instances should carry the same value of this resource in order to me considered matched. This was not implemented in the LwM2M library and it was incorrectly assumed that the Security object instance index corresponds to the Server object instance index. While such apporach works is simple scenario, it might yield incorrect results when bootstrap is used. Fix this, by verifyng the Short Server ID resource in the Secuirty instance used, and finding a matching Server instance. The server object instance is stored for future use in the engine. Additionally, remove an extra Server object instance that was created when the bootstrap procedure was used. Since the boostrap Security object instance does not have the corresponding Server object, it's enough to have a single Server instance. Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
892 lines
27 KiB
C
892 lines
27 KiB
C
/*
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* Copyright (c) 2017 Linaro Limited
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* Copyright (c) 2017-2019 Foundries.io
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/** @file lwm2m.h
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*
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* @defgroup lwm2m_api LwM2M high-level API
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* @ingroup networking
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* @{
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* @brief LwM2M high-level API
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*
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* @details
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* LwM2M high-level interface is defined in this header.
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*
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* @note The implementation assumes UDP module is enabled.
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*
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* @note LwM2M 1.0.x is currently the only supported version.
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*/
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#ifndef ZEPHYR_INCLUDE_NET_LWM2M_H_
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#define ZEPHYR_INCLUDE_NET_LWM2M_H_
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#include <kernel.h>
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#include <sys/mutex.h>
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#include <net/coap.h>
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/**
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* @brief LwM2M Objects managed by OMA for LwM2M tech specification. Objects
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* in this range have IDs from 0 to 1023.
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* For more information refer to Technical Specification
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* OMA-TS-LightweightM2M-V1_0_2-20180209-A
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*/
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#define LWM2M_OBJECT_SECURITY_ID 0
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#define LWM2M_OBJECT_SERVER_ID 1
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#define LWM2M_OBJECT_ACCESS_CONTROL_ID 2
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#define LWM2M_OBJECT_DEVICE_ID 3
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#define LWM2M_OBJECT_CONNECTIVITY_MONITORING_ID 4
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#define LWM2M_OBJECT_FIRMWARE_ID 5
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#define LWM2M_OBJECT_LOCATION_ID 6
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#define LWM2M_OBJECT_CONNECTIVITY_STATISTICS_ID 7
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/**
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* @brief LwM2M Objects produced by 3rd party Standards Development
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* Organizations. Objects in this range have IDs from 2048 to 10240
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* Refer to the OMA LightweightM2M (LwM2M) Object and Resource Registry:
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* http://www.openmobilealliance.org/wp/OMNA/LwM2M/LwM2MRegistry.html
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*/
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#define IPSO_OBJECT_TEMP_SENSOR_ID 3303
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#define IPSO_OBJECT_LIGHT_CONTROL_ID 3311
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#define IPSO_OBJECT_ACCELEROMETER_ID 3313
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#define IPSO_OBJECT_BUZZER_ID 3338
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#define IPSO_OBJECT_TIMER_ID 3340
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#define IPSO_OBJECT_ONOFF_SWITCH_ID 3342
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#define IPSO_OBJECT_PUSH_BUTTON_ID 3347
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/**
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* @brief LwM2M context structure to maintain information for a single
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* LwM2M connection.
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*/
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struct lwm2m_ctx {
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/** Destination address storage */
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struct sockaddr remote_addr;
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/** Private CoAP and networking structures */
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struct coap_pending pendings[CONFIG_LWM2M_ENGINE_MAX_PENDING];
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struct coap_reply replies[CONFIG_LWM2M_ENGINE_MAX_REPLIES];
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struct k_delayed_work retransmit_work;
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struct sys_mutex send_lock;
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#if defined(CONFIG_LWM2M_DTLS_SUPPORT)
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/** TLS tag is set by client as a reference used when the
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* LwM2M engine calls tls_credential_(add|delete)
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*/
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int tls_tag;
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/** Client can set load_credentials function as a way of overriding
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* the default behavior of load_tls_credential() in lwm2m_engine.c
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*/
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int (*load_credentials)(struct lwm2m_ctx *client_ctx);
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#endif
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/** Flag to indicate if context should use DTLS.
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* Enabled via the use of coaps:// protocol prefix in connection
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* information.
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* NOTE: requires CONFIG_LWM2M_DTLS_SUPPORT=y
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*/
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bool use_dtls;
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/** Current index of Security Object used for server credentials */
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int sec_obj_inst;
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/** Current index of Server Object used in this context. */
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int srv_obj_inst;
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/** Flag to enable BOOTSTRAP interface. See Section 5.2
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* "Bootstrap Interface" of LwM2M Technical Specification 1.0.2
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* for more information.
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*/
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bool bootstrap_mode;
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/** This flag enables the context to handle an initial ACK after
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* requesting a block of data, but a follow-up packet will contain
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* actual data block.
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* NOTE: This is required for CoAP proxy use-case.
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*/
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bool handle_separate_response;
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/** Socket File Descriptor */
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int sock_fd;
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};
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/**
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* @brief Asynchronous callback to get a resource buffer and length.
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*
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* Prior to accessing the data buffer of a resource, the engine can
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* use this callback to get the buffer pointer and length instead
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* of using the resource's data buffer.
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*
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* The client or LwM2M objects can register a function of this type via:
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* lwm2m_engine_register_read_callback()
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* lwm2m_engine_register_pre_write_callback()
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*
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* @param[in] obj_inst_id Object instance ID generating the callback.
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* @param[in] res_id Resource ID generating the callback.
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* @param[in] res_inst_id Resource instance ID generating the callback
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* (typically 0 for non-multi instance resources).
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* @param[out] data_len Length of the data buffer.
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*
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* @return Callback returns a pointer to the data buffer or NULL for failure.
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*/
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typedef void *(*lwm2m_engine_get_data_cb_t)(uint16_t obj_inst_id,
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uint16_t res_id, uint16_t res_inst_id,
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size_t *data_len);
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/**
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* @brief Asynchronous callback when data has been set to a resource buffer.
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*
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* After changing the data of a resource buffer, the LwM2M engine can
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* make use of this callback to pass the data back to the client or LwM2M
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* objects.
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*
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* A function of this type can be registered via:
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* lwm2m_engine_register_post_write_callback()
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*
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* @param[in] obj_inst_id Object instance ID generating the callback.
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* @param[in] res_id Resource ID generating the callback.
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* @param[in] res_inst_id Resource instance ID generating the callback
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* (typically 0 for non-multi instance resources).
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* @param[in] data Pointer to data.
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* @param[in] data_len Length of the data.
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* @param[in] last_block Flag used during block transfer to indicate the last
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* block of data. For non-block transfers this is always
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* false.
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* @param[in] total_size Expected total size of data for a block transfer.
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* For non-block transfers this is 0.
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*
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* @return Callback returns a negative error code (errno.h) indicating
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* reason of failure or 0 for success.
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*/
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typedef int (*lwm2m_engine_set_data_cb_t)(uint16_t obj_inst_id,
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uint16_t res_id, uint16_t res_inst_id,
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uint8_t *data, uint16_t data_len,
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bool last_block, size_t total_size);
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/**
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* @brief Asynchronous event notification callback.
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*
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* Various object instance and resource-based events in the LwM2M engine
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* can trigger a callback of this function type: object instance create,
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* object instance delete and resource execute.
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*
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* Register a function of this type via:
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* lwm2m_engine_register_exec_callback()
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* lwm2m_engine_register_create_callback()
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* lwm2m_engine_register_delete_callback()
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*
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* @param[in] obj_inst_id Object instance ID generating the callback.
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*
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* @return Callback returns a negative error code (errno.h) indicating
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* reason of failure or 0 for success.
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*/
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typedef int (*lwm2m_engine_user_cb_t)(uint16_t obj_inst_id);
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/**
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* @brief Power source types used for the "Available Power Sources" resource of
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* the LwM2M Device object.
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*/
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#define LWM2M_DEVICE_PWR_SRC_TYPE_DC_POWER 0
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#define LWM2M_DEVICE_PWR_SRC_TYPE_BAT_INT 1
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#define LWM2M_DEVICE_PWR_SRC_TYPE_BAT_EXT 2
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#define LWM2M_DEVICE_PWR_SRC_TYPE_UNUSED 3
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#define LWM2M_DEVICE_PWR_SRC_TYPE_PWR_OVER_ETH 4
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#define LWM2M_DEVICE_PWR_SRC_TYPE_USB 5
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#define LWM2M_DEVICE_PWR_SRC_TYPE_AC_POWER 6
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#define LWM2M_DEVICE_PWR_SRC_TYPE_SOLAR 7
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#define LWM2M_DEVICE_PWR_SRC_TYPE_MAX 8
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/**
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* @brief Error codes used for the "Error Code" resource of the LwM2M Device
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* object. An LwM2M client can register one of the following error codes via
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* the lwm2m_device_add_err() function.
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*/
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#define LWM2M_DEVICE_ERROR_NONE 0
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#define LWM2M_DEVICE_ERROR_LOW_POWER 1
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#define LWM2M_DEVICE_ERROR_EXT_POWER_SUPPLY_OFF 2
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#define LWM2M_DEVICE_ERROR_GPS_FAILURE 3
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#define LWM2M_DEVICE_ERROR_LOW_SIGNAL_STRENGTH 4
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#define LWM2M_DEVICE_ERROR_OUT_OF_MEMORY 5
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#define LWM2M_DEVICE_ERROR_SMS_FAILURE 6
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#define LWM2M_DEVICE_ERROR_NETWORK_FAILURE 7
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#define LWM2M_DEVICE_ERROR_PERIPHERAL_FAILURE 8
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/**
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* @brief Battery status codes used for the "Battery Status" resource (3/0/20)
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* of the LwM2M Device object. As the battery status changes, an LwM2M
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* client can set one of the following codes via:
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* lwm2m_engine_set_u8("3/0/20", [battery status])
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*/
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#define LWM2M_DEVICE_BATTERY_STATUS_NORMAL 0
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#define LWM2M_DEVICE_BATTERY_STATUS_CHARGING 1
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#define LWM2M_DEVICE_BATTERY_STATUS_CHARGE_COMP 2
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#define LWM2M_DEVICE_BATTERY_STATUS_DAMAGED 3
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#define LWM2M_DEVICE_BATTERY_STATUS_LOW 4
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#define LWM2M_DEVICE_BATTERY_STATUS_NOT_INST 5
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#define LWM2M_DEVICE_BATTERY_STATUS_UNKNOWN 6
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/**
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* @brief Register a new error code with LwM2M Device object.
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*
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* @param[in] error_code New error code.
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_device_add_err(uint8_t error_code);
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/**
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* @brief LWM2M Firmware Update object states
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*
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* An LwM2M client or the LwM2M Firmware Update object use the following codes
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* to represent the LwM2M Firmware Update state (5/0/3).
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*/
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#define STATE_IDLE 0
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#define STATE_DOWNLOADING 1
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#define STATE_DOWNLOADED 2
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#define STATE_UPDATING 3
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/**
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* @brief LWM2M Firmware Update object result codes
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*
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* After processing a firmware update, the client sets the result via one of
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* the following codes via lwm2m_engine_set_u8("5/0/5", [result code])
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*/
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#define RESULT_DEFAULT 0
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#define RESULT_SUCCESS 1
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#define RESULT_NO_STORAGE 2
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#define RESULT_OUT_OF_MEM 3
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#define RESULT_CONNECTION_LOST 4
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#define RESULT_INTEGRITY_FAILED 5
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#define RESULT_UNSUP_FW 6
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#define RESULT_INVALID_URI 7
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#define RESULT_UPDATE_FAILED 8
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#define RESULT_UNSUP_PROTO 9
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#if defined(CONFIG_LWM2M_FIRMWARE_UPDATE_OBJ_SUPPORT)
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/**
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* @brief Set data callback for firmware block transfer.
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*
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* LwM2M clients use this function to register a callback for receiving the
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* block transfer data when performing a firmware update.
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*
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* @param[in] cb A callback function to receive the block transfer data
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*/
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void lwm2m_firmware_set_write_cb(lwm2m_engine_set_data_cb_t cb);
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/**
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* @brief Get the data callback for firmware block transfer writes.
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*
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* @return A registered callback function to receive the block transfer data
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*/
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lwm2m_engine_set_data_cb_t lwm2m_firmware_get_write_cb(void);
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#if defined(CONFIG_LWM2M_FIRMWARE_UPDATE_PULL_SUPPORT)
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/**
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* @brief Set data callback to handle firmware update execute events.
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*
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* LwM2M clients use this function to register a callback for receiving the
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* update resource "execute" operation on the LwM2M Firmware Update object.
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*
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* @param[in] cb A callback function to receive the execute event.
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*/
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void lwm2m_firmware_set_update_cb(lwm2m_engine_user_cb_t cb);
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/**
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* @brief Get the event callback for firmware update execute events.
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*
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* @return A registered callback function to receive the execute event.
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*/
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lwm2m_engine_user_cb_t lwm2m_firmware_get_update_cb(void);
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/**
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* @brief Get the block context of the current firmware block.
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*
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* @param[out] ctx A buffer to store the block context.
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*/
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struct coap_block_context *lwm2m_firmware_get_block_context();
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#endif
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#endif
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/**
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* @brief Data structure used to represent the LwM2M float type:
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* val1 is the whole number portion of the decimal
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* val2 is the decimal portion *1000000 for 32bit, *1000000000 for 64bit
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* Example: 123.456 == val1: 123, val2:456000
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* Example: 123.000456 = val1: 123, val2:456
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*/
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/**
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* @brief Maximum precision value for 32-bit LwM2M float val2
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*/
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#define LWM2M_FLOAT32_DEC_MAX 1000000
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/**
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* @brief 32-bit variant of the LwM2M float structure
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*/
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typedef struct float32_value {
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int32_t val1;
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int32_t val2;
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} float32_value_t;
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/**
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* @brief Maximum precision value for 64-bit LwM2M float val2
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*/
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#define LWM2M_FLOAT64_DEC_MAX 1000000000LL
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/**
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* @brief 32-bit variant of the LwM2M float structure
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*/
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typedef struct float64_value {
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int64_t val1;
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int64_t val2;
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} float64_value_t;
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/**
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* @brief Maximum value for ObjLnk resource fields
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*/
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#define LWM2M_OBJLNK_MAX_ID USHRT_MAX
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/**
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* @brief LWM2M ObjLnk resource type structure
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*/
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struct lwm2m_objlnk {
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uint16_t obj_id;
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uint16_t obj_inst;
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};
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/**
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* @brief Create an LwM2M object instance.
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*
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* LwM2M clients use this function to create non-default LwM2M objects:
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* Example to create first temperature sensor object:
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* lwm2m_engine_create_obj_inst("3303/0");
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst"
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_create_obj_inst(char *pathstr);
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/**
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* @brief Set resource (instance) value (opaque buffer)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] data_ptr Data buffer
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* @param[in] data_len Length of buffer
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_opaque(char *pathstr, char *data_ptr, uint16_t data_len);
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/**
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* @brief Set resource (instance) value (string)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] data_ptr NULL terminated char buffer
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_string(char *pathstr, char *data_ptr);
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/**
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* @brief Set resource (instance) value (u8)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value u8 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_u8(char *pathstr, uint8_t value);
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/**
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* @brief Set resource (instance) value (u16)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value u16 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_u16(char *pathstr, uint16_t value);
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/**
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* @brief Set resource (instance) value (u32)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value u32 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_u32(char *pathstr, uint32_t value);
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/**
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* @brief Set resource (instance) value (u64)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value u64 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_u64(char *pathstr, uint64_t value);
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/**
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* @brief Set resource (instance) value (s8)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value s8 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_s8(char *pathstr, int8_t value);
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/**
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* @brief Set resource (instance) value (s16)
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*
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* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
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* @param[in] value s16 value
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*
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* @return 0 for success or negative in case of error.
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*/
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int lwm2m_engine_set_s16(char *pathstr, int16_t value);
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/**
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* @brief Set resource (instance) value (s32)
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*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value s32 value
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_s32(char *pathstr, int32_t value);
|
|
|
|
/**
|
|
* @brief Set resource (instance) value (s64)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value s64 value
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_s64(char *pathstr, int64_t value);
|
|
|
|
/**
|
|
* @brief Set resource (instance) value (bool)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value bool value
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_bool(char *pathstr, bool value);
|
|
|
|
/**
|
|
* @brief Set resource (instance) value (32-bit float structure)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value 32-bit float value
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_float32(char *pathstr, float32_value_t *value);
|
|
|
|
/**
|
|
* @brief Set resource (instance) value (64-bit float structure)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value 64-bit float value
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_float64(char *pathstr, float64_value_t *value);
|
|
|
|
/**
|
|
* @brief Set resource (instance) value (ObjLnk)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] value pointer to the lwm2m_objlnk structure
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_objlnk(char *pathstr, struct lwm2m_objlnk *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (opaque buffer)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] buf Data buffer to copy data into
|
|
* @param[in] buflen Length of buffer
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_opaque(char *pathstr, void *buf, uint16_t buflen);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (string)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] str String buffer to copy data into
|
|
* @param[in] strlen Length of buffer
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_string(char *pathstr, void *str, uint16_t strlen);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (u8)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value u8 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_u8(char *pathstr, uint8_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (u16)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value u16 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_u16(char *pathstr, uint16_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (u32)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value u32 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_u32(char *pathstr, uint32_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (u64)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value u64 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_u64(char *pathstr, uint64_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (s8)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value s8 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_s8(char *pathstr, int8_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (s16)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value s16 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_s16(char *pathstr, int16_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (s32)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value s32 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_s32(char *pathstr, int32_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (s64)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value s64 buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_s64(char *pathstr, int64_t *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (bool)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] value bool buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_bool(char *pathstr, bool *value);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (32-bit float structure)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] buf 32-bit float buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_float32(char *pathstr, float32_value_t *buf);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (64-bit float structure)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] buf 64-bit float buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_float64(char *pathstr, float64_value_t *buf);
|
|
|
|
/**
|
|
* @brief Get resource (instance) value (ObjLnk)
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] buf lwm2m_objlnk buffer to copy data into
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_objlnk(char *pathstr, struct lwm2m_objlnk *buf);
|
|
|
|
|
|
/**
|
|
* @brief Set resource (instance) read callback
|
|
*
|
|
* LwM2M clients can use this to set the callback function for resource reads.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] cb Read resource callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_read_callback(char *pathstr,
|
|
lwm2m_engine_get_data_cb_t cb);
|
|
|
|
/**
|
|
* @brief Set resource (instance) pre-write callback
|
|
*
|
|
* This callback is triggered before setting the value of a resource. It
|
|
* can pass a special data buffer to the engine so that the actual resource
|
|
* value can be calculated later, etc.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] cb Pre-write resource callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_pre_write_callback(char *pathstr,
|
|
lwm2m_engine_get_data_cb_t cb);
|
|
|
|
/**
|
|
* @brief Set resource (instance) post-write callback
|
|
*
|
|
* This callback is triggered after setting the value of a resource to the
|
|
* resource data buffer.
|
|
*
|
|
* It allows an LwM2M client or object to post-process the value of a resource
|
|
* or trigger other related resource calculations.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] cb Post-write resource callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_post_write_callback(char *pathstr,
|
|
lwm2m_engine_set_data_cb_t cb);
|
|
|
|
/**
|
|
* @brief Set resource execute event callback
|
|
*
|
|
* This event is triggered when the execute method of a resource is enabled.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res"
|
|
* @param[in] cb Execute resource callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_exec_callback(char *pathstr,
|
|
lwm2m_engine_user_cb_t cb);
|
|
|
|
/**
|
|
* @brief Set object instance create event callback
|
|
*
|
|
* This event is triggered when an object instance is created.
|
|
*
|
|
* @param[in] obj_id LwM2M object id
|
|
* @param[in] cb Create object instance callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_create_callback(uint16_t obj_id,
|
|
lwm2m_engine_user_cb_t cb);
|
|
|
|
/**
|
|
* @brief Set object instance delete event callback
|
|
*
|
|
* This event is triggered when an object instance is deleted.
|
|
*
|
|
* @param[in] obj_id LwM2M object id
|
|
* @param[in] cb Delete object instance callback
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_register_delete_callback(uint16_t obj_id,
|
|
lwm2m_engine_user_cb_t cb);
|
|
|
|
/**
|
|
* @brief Resource read-only value bit
|
|
*/
|
|
#define LWM2M_RES_DATA_READ_ONLY 0
|
|
|
|
/**
|
|
* @brief Resource read-only flag
|
|
*/
|
|
#define LWM2M_RES_DATA_FLAG_RO BIT(LWM2M_RES_DATA_READ_ONLY)
|
|
|
|
/**
|
|
* @brief Read resource flags helper macro
|
|
*/
|
|
#define LWM2M_HAS_RES_FLAG(res, f) ((res->data_flags & f) == f)
|
|
|
|
/**
|
|
* @brief Set data buffer for a resource
|
|
*
|
|
* Use this function to set the data buffer and flags for the specified LwM2M
|
|
* resource.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[in] data_ptr Data buffer pointer
|
|
* @param[in] data_len Length of buffer
|
|
* @param[in] data_flags Data buffer flags (such as read-only, etc)
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_set_res_data(char *pathstr, void *data_ptr, uint16_t data_len,
|
|
uint8_t data_flags);
|
|
|
|
/**
|
|
* @brief Get data buffer for a resource
|
|
*
|
|
* Use this function to get the data buffer information for the specified LwM2M
|
|
* resource.
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res(/res-inst)"
|
|
* @param[out] data_ptr Data buffer pointer
|
|
* @param[out] data_len Length of buffer
|
|
* @param[out] data_flags Data buffer flags (such as read-only, etc)
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_get_res_data(char *pathstr, void **data_ptr, uint16_t *data_len,
|
|
uint8_t *data_flags);
|
|
|
|
/**
|
|
* @brief Create a resource instance
|
|
*
|
|
* LwM2M clients use this function to create multi-resource instances:
|
|
* Example to create 0 instance of device available power sources:
|
|
* lwm2m_engine_create_res_inst("3/0/6/0");
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res/res-inst"
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_create_res_inst(char *pathstr);
|
|
|
|
/**
|
|
* @brief Delete a resource instance
|
|
*
|
|
* Use this function to remove an existing resource instance
|
|
*
|
|
* @param[in] pathstr LwM2M path string "obj/obj-inst/res/res-inst"
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_delete_res_inst(char *pathstr);
|
|
|
|
/**
|
|
* @brief Start the LwM2M engine
|
|
*
|
|
* LwM2M clients normally do not need to call this function as it is called
|
|
* by lwm2m_rd_client_start(). However, if the client does not use the RD
|
|
* client implementation, it will need to be called manually.
|
|
*
|
|
* @param[in] client_ctx LwM2M context
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
int lwm2m_engine_start(struct lwm2m_ctx *client_ctx);
|
|
|
|
/**
|
|
* @brief LwM2M RD client events
|
|
*
|
|
* LwM2M client events are passed back to the event_cb function in
|
|
* lwm2m_rd_client_start()
|
|
*/
|
|
enum lwm2m_rd_client_event {
|
|
LWM2M_RD_CLIENT_EVENT_NONE,
|
|
LWM2M_RD_CLIENT_EVENT_BOOTSTRAP_REG_FAILURE,
|
|
LWM2M_RD_CLIENT_EVENT_BOOTSTRAP_REG_COMPLETE,
|
|
LWM2M_RD_CLIENT_EVENT_BOOTSTRAP_TRANSFER_COMPLETE,
|
|
LWM2M_RD_CLIENT_EVENT_REGISTRATION_FAILURE,
|
|
LWM2M_RD_CLIENT_EVENT_REGISTRATION_COMPLETE,
|
|
LWM2M_RD_CLIENT_EVENT_REG_UPDATE_FAILURE,
|
|
LWM2M_RD_CLIENT_EVENT_REG_UPDATE_COMPLETE,
|
|
LWM2M_RD_CLIENT_EVENT_DEREGISTER_FAILURE,
|
|
LWM2M_RD_CLIENT_EVENT_DISCONNECT,
|
|
LWM2M_RD_CLIENT_EVENT_QUEUE_MODE_RX_OFF,
|
|
};
|
|
|
|
/**
|
|
* @brief Asynchronous RD client event callback
|
|
*
|
|
* @param[in] ctx LwM2M context generating the event
|
|
* @param[in] event LwM2M RD client event code
|
|
*/
|
|
typedef void (*lwm2m_ctx_event_cb_t)(struct lwm2m_ctx *ctx,
|
|
enum lwm2m_rd_client_event event);
|
|
|
|
/**
|
|
* @brief Start the LwM2M RD (Registration / Discovery) Client
|
|
*
|
|
* The RD client sits just above the LwM2M engine and performs the necessary
|
|
* actions to implement the "Registration interface".
|
|
* For more information see Section 5.3 "Client Registration Interface" of the
|
|
* LwM2M Technical Specification.
|
|
*
|
|
* NOTE: lwm2m_engine_start() is called automatically by this function.
|
|
*
|
|
* @param[in] client_ctx LwM2M context
|
|
* @param[in] ep_name Registered endpoint name
|
|
* @param[in] event_cb Client event callback function
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
void lwm2m_rd_client_start(struct lwm2m_ctx *client_ctx, const char *ep_name,
|
|
lwm2m_ctx_event_cb_t event_cb);
|
|
|
|
/**
|
|
* @brief Stop the LwM2M RD (De-register) Client
|
|
*
|
|
* The RD client sits just above the LwM2M engine and performs the necessary
|
|
* actions to implement the "Registration interface".
|
|
* For more information see Section 5.3 "Client Registration Interface" of the
|
|
* LwM2M Technical Specification.
|
|
*
|
|
* @param[in] client_ctx LwM2M context
|
|
* @param[in] event_cb Client event callback function
|
|
*
|
|
* @return 0 for success or negative in case of error.
|
|
*/
|
|
void lwm2m_rd_client_stop(struct lwm2m_ctx *client_ctx,
|
|
lwm2m_ctx_event_cb_t event_cb);
|
|
|
|
#endif /* ZEPHYR_INCLUDE_NET_LWM2M_H_ */
|
|
/**@} */
|