void prv_freeClient(lwm2m_client_t * clientP) { if (clientP->name != NULL) lwm2m_free(clientP->name); prv_freeClientObjectList(clientP->objectList); while(clientP->observationList != NULL) { lwm2m_observation_t * targetP; targetP = clientP->observationList; clientP->observationList = clientP->observationList->next; lwm2m_free(targetP); } lwm2m_free(clientP); }
void registration_freeClient(lwm2m_client_t * clientP) { if (clientP->name != NULL) lwm2m_free(clientP->name); if (clientP->msisdn != NULL) lwm2m_free(clientP->msisdn); if (clientP->altPath != NULL) lwm2m_free(clientP->altPath); prv_freeClientObjectList(clientP->objectList); while(clientP->observationList != NULL) { lwm2m_observation_t * targetP; targetP = clientP->observationList; clientP->observationList = clientP->observationList->next; lwm2m_free(targetP); } lwm2m_free(clientP); }
coap_status_t handle_registration_request(lwm2m_context_t * contextP, lwm2m_uri_t * uriP, void * fromSessionH, coap_packet_t * message, coap_packet_t * response) { coap_status_t result; time_t tv_sec; tv_sec = lwm2m_gettime(); if (tv_sec < 0) return COAP_500_INTERNAL_SERVER_ERROR; switch(message->code) { case COAP_POST: { char * name = NULL; uint32_t lifetime; char * msisdn; char * altPath; lwm2m_binding_t binding; lwm2m_client_object_t * objects; lwm2m_client_t * clientP; char location[MAX_LOCATION_LENGTH]; if (0 != prv_getParameters(message->uri_query, &name, &lifetime, &msisdn, &binding)) { return COAP_400_BAD_REQUEST; } objects = prv_decodeRegisterPayload(message->payload, message->payload_len, &altPath); switch (uriP->flag & LWM2M_URI_MASK_ID) { case 0: // Register operation if (objects == NULL) { lwm2m_free(name); if (msisdn != NULL) lwm2m_free(msisdn); return COAP_400_BAD_REQUEST; } // Endpoint client name is mandatory if (name == NULL) { if (msisdn != NULL) lwm2m_free(msisdn); return COAP_400_BAD_REQUEST; } if (lifetime == 0) { lifetime = LWM2M_DEFAULT_LIFETIME; } clientP = prv_getClientByName(contextP, name); if (clientP != NULL) { // we reset this registration lwm2m_free(clientP->name); if (clientP->msisdn != NULL) lwm2m_free(clientP->msisdn); if (clientP->altPath != NULL) lwm2m_free(clientP->altPath); prv_freeClientObjectList(clientP->objectList); clientP->objectList = NULL; } else { clientP = (lwm2m_client_t *)lwm2m_malloc(sizeof(lwm2m_client_t)); if (clientP == NULL) { lwm2m_free(name); lwm2m_free(altPath); if (msisdn != NULL) lwm2m_free(msisdn); prv_freeClientObjectList(objects); return COAP_500_INTERNAL_SERVER_ERROR; } memset(clientP, 0, sizeof(lwm2m_client_t)); clientP->internalID = lwm2m_list_newId((lwm2m_list_t *)contextP->clientList); contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_ADD(contextP->clientList, clientP); } clientP->name = name; clientP->binding = binding; clientP->msisdn = msisdn; clientP->altPath = altPath; clientP->lifetime = lifetime; clientP->endOfLife = tv_sec + lifetime; clientP->objectList = objects; clientP->sessionH = fromSessionH; if (prv_getLocationString(clientP->internalID, location) == 0) { prv_freeClient(clientP); return COAP_500_INTERNAL_SERVER_ERROR; } if (coap_set_header_location_path(response, location) == 0) { prv_freeClient(clientP); return COAP_500_INTERNAL_SERVER_ERROR; } if (contextP->monitorCallback != NULL) { contextP->monitorCallback(clientP->internalID, NULL, CREATED_2_01, NULL, 0, contextP->monitorUserData); } result = COAP_201_CREATED; break; case LWM2M_URI_FLAG_OBJECT_ID: clientP = (lwm2m_client_t *)lwm2m_list_find((lwm2m_list_t *)contextP->clientList, uriP->objectId); if (clientP == NULL) return COAP_404_NOT_FOUND; // Endpoint client name MUST NOT be present if (name != NULL) { lwm2m_free(name); if (msisdn != NULL) lwm2m_free(msisdn); return COAP_400_BAD_REQUEST; } if (binding != BINDING_UNKNOWN) { clientP->binding = binding; } if (msisdn != NULL) { if (clientP->msisdn != NULL) lwm2m_free(clientP->msisdn); clientP->msisdn = msisdn; } if (lifetime != 0) { clientP->lifetime = lifetime; } // client IP address, port or MSISDN may have changed clientP->sessionH = fromSessionH; if (objects != NULL) { lwm2m_observation_t * observationP; // remove observations on object/instance no longer existing observationP = clientP->observationList; while (observationP != NULL) { lwm2m_client_object_t * objP; lwm2m_observation_t * nextP; nextP = observationP->next; objP = (lwm2m_client_object_t *)lwm2m_list_find((lwm2m_list_t *)objects, observationP->uri.objectId); if (objP == NULL) { observationP->callback(clientP->internalID, &observationP->uri, COAP_202_DELETED, NULL, 0, observationP->userData); observation_remove(clientP, observationP); } else { if ((observationP->uri.flag & LWM2M_URI_FLAG_INSTANCE_ID) != 0) { if (lwm2m_list_find((lwm2m_list_t *)objP->instanceList, observationP->uri.instanceId) == NULL) { observationP->callback(clientP->internalID, &observationP->uri, COAP_202_DELETED, NULL, 0, observationP->userData); observation_remove(clientP, observationP); } } } observationP = nextP; } prv_freeClientObjectList(clientP->objectList); clientP->objectList = objects; } clientP->endOfLife = tv_sec + clientP->lifetime; if (contextP->monitorCallback != NULL) { contextP->monitorCallback(clientP->internalID, NULL, COAP_204_CHANGED, NULL, 0, contextP->monitorUserData); } result = COAP_204_CHANGED; break; default: return COAP_400_BAD_REQUEST; } } break; case COAP_DELETE: { lwm2m_client_t * clientP; if ((uriP->flag & LWM2M_URI_MASK_ID) != LWM2M_URI_FLAG_OBJECT_ID) return COAP_400_BAD_REQUEST; contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_RM(contextP->clientList, uriP->objectId, &clientP); if (clientP == NULL) return COAP_400_BAD_REQUEST; if (contextP->monitorCallback != NULL) { contextP->monitorCallback(clientP->internalID, NULL, DELETED_2_02, NULL, 0, contextP->monitorUserData); } prv_freeClient(clientP); result = COAP_202_DELETED; } break; default: return COAP_400_BAD_REQUEST; } return result; }
static lwm2m_client_object_t * prv_decodeRegisterPayload(uint8_t * payload, uint16_t payloadLength, bool * supportJSON, char ** altPath) { uint16_t index; lwm2m_client_object_t * objList; bool linkAttrFound; *altPath = NULL; *supportJSON = false; objList = NULL; linkAttrFound = false; index = 0; while (index <= payloadLength) { uint16_t start; uint16_t length; int result; uint16_t id; uint16_t instance; while (index < payloadLength && payload[index] == ' ') index++; if (index == payloadLength) break; start = index; while (index < payloadLength && payload[index] != REG_DELIMITER) index++; length = index - start; result = prv_getId(payload + start, length, &id, &instance); if (result != 0) { lwm2m_client_object_t * objectP; objectP = (lwm2m_client_object_t *)lwm2m_list_find((lwm2m_list_t *)objList, id); if (objectP == NULL) { objectP = (lwm2m_client_object_t *)lwm2m_malloc(sizeof(lwm2m_client_object_t)); memset(objectP, 0, sizeof(lwm2m_client_object_t)); if (objectP == NULL) goto error; objectP->id = id; objList = (lwm2m_client_object_t *)LWM2M_LIST_ADD(objList, objectP); } if (result == 2) { lwm2m_list_t * instanceP; instanceP = lwm2m_list_find(objectP->instanceList, instance); if (instanceP == NULL) { instanceP = (lwm2m_list_t *)lwm2m_malloc(sizeof(lwm2m_list_t)); memset(instanceP, 0, sizeof(lwm2m_list_t)); instanceP->id = instance; objectP->instanceList = LWM2M_LIST_ADD(objectP->instanceList, instanceP); } } } else if (linkAttrFound == false) { result = prv_parseLinkAttributes(payload + start, length, supportJSON, altPath); if (result == 0) goto error; linkAttrFound = true; } else goto error; index++; } return objList; error: if (*altPath != NULL) { lwm2m_free(*altPath); *altPath = NULL; } prv_freeClientObjectList(objList); return NULL; }
coap_status_t handle_registration_request(lwm2m_context_t * contextP, lwm2m_uri_t * uriP, struct sockaddr * fromAddr, socklen_t fromAddrLen, coap_packet_t * message, coap_packet_t * response) { coap_status_t result; switch(message->code) { case COAP_POST: { char * name = NULL; lwm2m_client_object_t * objects; lwm2m_client_t * clientP; char location[MAX_LOCATION_LENGTH]; if (uriP->flag & LWM2M_URI_MASK_ID != 0) return COAP_400_BAD_REQUEST; prv_getParameters(message->uri_query, &name); if (name == NULL) return COAP_400_BAD_REQUEST; objects = prv_decodeRegisterPayload(message->payload, message->payload_len); if (objects == NULL) { free(name); return COAP_400_BAD_REQUEST; } clientP = prv_getClientByName(contextP, name); if (clientP != NULL) { // we reset this registration free(clientP->name); free(clientP->addr); prv_freeClientObjectList(clientP->objectList); clientP->objectList = NULL; } else { clientP = (lwm2m_client_t *)malloc(sizeof(lwm2m_client_t)); if (clientP == NULL) { free(name); prv_freeClientObjectList(objects); return COAP_500_INTERNAL_SERVER_ERROR; } memset(clientP, 0, sizeof(lwm2m_client_t)); clientP->internalID = lwm2m_list_newId((lwm2m_list_t *)contextP->clientList); contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_ADD(contextP->clientList, clientP); } clientP->name = name; clientP->objectList = objects; clientP->addr = (struct sockaddr *)malloc(fromAddrLen); if (clientP->addr == NULL) { prv_freeClient(clientP); return COAP_500_INTERNAL_SERVER_ERROR; } memcpy(clientP->addr, fromAddr, fromAddrLen); clientP->addrLen = fromAddrLen; if (prv_getLocationString(clientP->internalID, location) == 0) { prv_freeClient(clientP); return COAP_500_INTERNAL_SERVER_ERROR; } coap_set_header_location_path(response, location); result = CREATED_2_01; } break; case COAP_PUT: result = COAP_501_NOT_IMPLEMENTED; break; case COAP_DELETE: { lwm2m_client_t * clientP; if (uriP->flag & LWM2M_URI_MASK_ID != LWM2M_URI_FLAG_OBJECT_ID) return COAP_400_BAD_REQUEST; contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_RM(contextP->clientList, uriP->objectId, &clientP); if (clientP == NULL) return COAP_400_BAD_REQUEST; prv_freeClient(clientP); result = DELETED_2_02; } break; default: return COAP_400_BAD_REQUEST; } return result; }