| /* |
| * Copyright (c) 2017 Linaro Limited |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define SYS_LOG_DOMAIN "lwm2m_obj_security" |
| #define SYS_LOG_LEVEL CONFIG_SYS_LOG_LWM2M_LEVEL |
| #include <logging/sys_log.h> |
| #include <stdint.h> |
| #include <init.h> |
| |
| #include "lwm2m_object.h" |
| #include "lwm2m_engine.h" |
| |
| /* Security resource IDs */ |
| #define SECURITY_SERVER_URI_ID 0 |
| #define SECURITY_BOOTSTRAP_FLAG_ID 1 |
| #define SECURITY_MODE_ID 2 |
| #define SECURITY_CLIENT_PK_ID 3 |
| #define SECURITY_SERVER_PK_ID 4 |
| #define SECURITY_SECRET_KEY_ID 5 |
| #define SECURITY_SHORT_SERVER_ID 10 |
| |
| #define SECURITY_MAX_ID 7 |
| |
| #define MAX_INSTANCE_COUNT CONFIG_LWM2M_SECURITY_INSTANCE_COUNT |
| |
| #define SECURITY_URI_LEN 255 |
| |
| /* resource state variables */ |
| static char security_uri[MAX_INSTANCE_COUNT][SECURITY_URI_LEN]; |
| static bool bootstrap_flag[MAX_INSTANCE_COUNT]; |
| static u8_t security_mode[MAX_INSTANCE_COUNT]; |
| static u16_t short_server_id[MAX_INSTANCE_COUNT]; |
| |
| static struct lwm2m_engine_obj security; |
| static struct lwm2m_engine_obj_field fields[] = { |
| OBJ_FIELD_DATA(SECURITY_SERVER_URI_ID, RW, STRING), |
| OBJ_FIELD_DATA(SECURITY_BOOTSTRAP_FLAG_ID, W, BOOL), |
| OBJ_FIELD_DATA(SECURITY_MODE_ID, W, U8), |
| OBJ_FIELD_DATA(SECURITY_CLIENT_PK_ID, W, OPAQUE), /* TODO */ |
| OBJ_FIELD_DATA(SECURITY_SERVER_PK_ID, W, OPAQUE), /* TODO */ |
| OBJ_FIELD_DATA(SECURITY_SECRET_KEY_ID, W, OPAQUE), /* TODO */ |
| OBJ_FIELD_DATA(SECURITY_SHORT_SERVER_ID, W, U16) /* TODO */ |
| }; |
| |
| static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT]; |
| static struct lwm2m_engine_res_inst res[MAX_INSTANCE_COUNT][SECURITY_MAX_ID]; |
| |
| static struct lwm2m_engine_obj_inst *security_create(u16_t obj_inst_id) |
| { |
| int index, i = 0; |
| |
| /* Check that there is no other instance with this ID */ |
| for (index = 0; index < MAX_INSTANCE_COUNT; index++) { |
| if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) { |
| SYS_LOG_ERR("Can not create instance - " |
| "already existing: %u", obj_inst_id); |
| return NULL; |
| } |
| } |
| |
| for (index = 0; index < MAX_INSTANCE_COUNT; index++) { |
| if (!inst[index].obj) { |
| break; |
| } |
| } |
| |
| if (index >= MAX_INSTANCE_COUNT) { |
| SYS_LOG_ERR("Can not create instance - " |
| "no more room: %u", obj_inst_id); |
| return NULL; |
| } |
| |
| /* default values */ |
| security_uri[index][0] = '\0'; |
| bootstrap_flag[index] = 0; |
| security_mode[index] = 0; |
| short_server_id[index] = 0; |
| |
| /* initialize instance resource data */ |
| INIT_OBJ_RES_DATA(res[index], i, SECURITY_SERVER_URI_ID, |
| security_uri[index], SECURITY_URI_LEN); |
| INIT_OBJ_RES_DATA(res[index], i, SECURITY_BOOTSTRAP_FLAG_ID, |
| &bootstrap_flag[index], sizeof(*bootstrap_flag)); |
| INIT_OBJ_RES_DATA(res[index], i, SECURITY_MODE_ID, |
| &security_mode[index], sizeof(*security_mode)); |
| /* TODO: */ |
| INIT_OBJ_RES_DUMMY(res[index], i, SECURITY_CLIENT_PK_ID); |
| INIT_OBJ_RES_DUMMY(res[index], i, SECURITY_SERVER_PK_ID), |
| INIT_OBJ_RES_DUMMY(res[index], i, SECURITY_SECRET_KEY_ID), |
| INIT_OBJ_RES_DATA(res[index], i, SECURITY_SHORT_SERVER_ID, |
| &short_server_id[index], sizeof(*short_server_id)); |
| |
| inst[index].resources = res[index]; |
| inst[index].resource_count = i; |
| SYS_LOG_DBG("Create LWM2M security instance: %d", obj_inst_id); |
| return &inst[index]; |
| } |
| |
| static int lwm2m_security_init(struct device *dev) |
| { |
| struct lwm2m_engine_obj_inst *obj_inst = NULL; |
| int ret = 0; |
| |
| /* Set default values */ |
| memset(inst, 0, sizeof(*inst) * MAX_INSTANCE_COUNT); |
| memset(res, 0, sizeof(struct lwm2m_engine_res_inst) * |
| MAX_INSTANCE_COUNT * SECURITY_MAX_ID); |
| |
| security.obj_id = LWM2M_OBJECT_SECURITY_ID; |
| security.fields = fields; |
| security.field_count = sizeof(fields) / sizeof(*fields); |
| security.max_instance_count = MAX_INSTANCE_COUNT; |
| security.create_cb = security_create; |
| lwm2m_register_obj(&security); |
| |
| /* auto create the first instance */ |
| ret = lwm2m_create_obj_inst(LWM2M_OBJECT_SECURITY_ID, 0, &obj_inst); |
| if (ret < 0) { |
| SYS_LOG_ERR("Create LWM2M security instance 0 error: %d", ret); |
| } |
| |
| return ret; |
| } |
| |
| SYS_INIT(lwm2m_security_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); |