378 lines
11 KiB
C
378 lines
11 KiB
C
/*
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* Copyright (c) 2015, Yanzi Networks AB.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* IPSO Objects and OMA LWM2M example.
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* \author
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* Joakim Eriksson, joakime@sics.se
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* Niclas Finne, nfi@sics.se
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*/
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#include "contiki.h"
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#include "net/ipv6/uip.h"
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#include "net/ipv6/uip-ds6.h"
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#include "net/netstack.h"
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#include "net/routing/routing.h"
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#include "coap-transport.h"
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#include "coap-blocking-api.h"
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#include "lwm2m-engine.h"
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#include "lwm2m-tlv.h"
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#include "dev/serial-line.h"
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#include "serial-protocol.h"
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#include <stdbool.h>
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#define DEBUG DEBUG_PRINT
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#include "net/ipv6/uip-debug.h"
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#define REMOTE_PORT UIP_HTONS(COAP_DEFAULT_PORT)
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#define EVENT_RUN_NOW 0
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#define URL_WELL_KNOWN ".well-known/core"
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#define URL_DEVICE_MODEL "/3/0/1"
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#define URL_DEVICE_FIRMWARE_VERSION "/3/0/3"
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#define URL_LIGHT_CONTROL "/3311/0/5850"
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#define URL_POWER_CONTROL "/3312/0/5850"
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#define MAX_NODES 10
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#define NODE_HAS_TYPE (1 << 0)
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struct node {
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coap_endpoint_t endpoint;
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char type[64];
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uint8_t flags;
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uint8_t retries;
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};
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static struct node nodes[MAX_NODES];
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static uint8_t node_count;
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static struct node *current_target;
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static char current_uri[32] = URL_LIGHT_CONTROL;
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static char current_value[32] = "1";
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static int current_request = COAP_PUT;
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static uint8_t fetching_type = 0;
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PROCESS(router_process, "router process");
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AUTOSTART_PROCESSES(&router_process);
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/*---------------------------------------------------------------------------*/
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static struct node *
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add_node(const uip_ipaddr_t *addr)
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{
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int i;
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].endpoint.ipaddr, addr)) {
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/* Node already added */
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return &nodes[i];
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}
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}
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if(node_count < MAX_NODES) {
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memset(&nodes[node_count].endpoint, 0, sizeof(coap_endpoint_t));
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uip_ipaddr_copy(&nodes[node_count].endpoint.ipaddr, addr);
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nodes[node_count].endpoint.port = REMOTE_PORT;
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return &nodes[node_count++];
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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void
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set_value(const uip_ipaddr_t *addr, char *uri, char *value)
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{
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int i;
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printf("#set value ");
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uip_debug_ipaddr_print(addr);
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printf(" URI: %s Value: %s\n", uri, value);
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].endpoint.ipaddr, addr)) {
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/* setup command */
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current_target = &nodes[i];
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current_request = COAP_PUT;
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strncpy(current_uri, uri, sizeof(current_uri) - 1);
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strncpy(current_value, value, sizeof(current_value) - 1);
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process_post(&router_process, EVENT_RUN_NOW, NULL);
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break;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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get_value(const uip_ipaddr_t *addr, char *uri)
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{
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int i;
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printf("#get value ");
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uip_debug_ipaddr_print(addr);
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printf(" URI: %s\n", uri);
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for(i = 0; i < node_count; i++) {
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if(uip_ipaddr_cmp(&nodes[i].endpoint.ipaddr, addr)) {
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/* setup command */
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current_target = &nodes[i];
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current_request = COAP_GET;
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strncpy(current_uri, uri, sizeof(current_uri) - 1);
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current_value[0] = 0;
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process_post(&router_process, EVENT_RUN_NOW, NULL);
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break;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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print_node_list(void)
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{
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int i;
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int out = 0;
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for(i = 0; i < node_count; i++) {
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if(nodes[i].flags & NODE_HAS_TYPE) {
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if(out++) {
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printf(";");
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}
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printf("%s,", nodes[i].type);
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uip_debug_ipaddr_print(&nodes[i].endpoint.ipaddr);
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}
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}
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printf("\n");
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}
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/*---------------------------------------------------------------------------*/
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/**
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* This function is will be passed to COAP_BLOCKING_REQUEST() to
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* handle responses.
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*/
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static void
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client_chunk_handler(coap_message_t *response)
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{
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const uint8_t *chunk;
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unsigned int format;
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int len = coap_get_payload(response, &chunk);
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coap_get_header_content_format(response, &format);
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/* if(len > 0) { */
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/* printf("|%.*s (%d,%d)", len, (char *)chunk, len, format); */
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/* } */
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if(response->code >= BAD_REQUEST_4_00) {
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PRINTF("\nReceived error %u: %.*s\n", response->code, len, (char *)chunk);
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} else if(current_target != NULL && fetching_type) {
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if(len > sizeof(current_target->type) - 1) {
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len = sizeof(current_target->type) - 1;
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}
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memcpy(current_target->type, chunk, len);
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current_target->type[len] = 0;
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current_target->flags |= NODE_HAS_TYPE;
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PRINTF("\nNODE ");
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PRINT6ADDR(¤t_target->endpoint.ipaddr);
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PRINTF(" HAS TYPE %s\n", current_target->type);
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} else {
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/* otherwise update the current value */
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if(format == LWM2M_TLV) {
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lwm2m_tlv_t tlv;
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/* we can only read int32 for now ? */
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if(lwm2m_tlv_read(&tlv, chunk, len) > 0) {
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/* printf("TLV.type=%d len=%d id=%d value[0]=%d\n", */
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/* tlv.type, tlv.length, tlv.id, tlv.value[0]); */
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int value = lwm2m_tlv_get_int32(&tlv);
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snprintf(current_value, sizeof(current_value) - 1, "%d", value);
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} else {
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PRINTF("Failed to parse LWM2M TLV\n");
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}
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} else {
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if(len > sizeof(current_value) - 1) {
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len = sizeof(current_value) - 1;
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}
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memcpy(current_value, chunk, len);
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current_value[len] = 0;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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#if UIP_CONF_IPV6_RPL
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static bool
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check_rpl_routes(void)
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{
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uip_sr_node_t *link;
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uip_ipaddr_t child_ipaddr;
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uip_ipaddr_t parent_ipaddr;
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/* Our routing links */
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for(link = uip_sr_node_head(); link != NULL; link = uip_sr_node_next(link)) {
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NETSTACK_ROUTING.get_sr_node_ipaddr(&child_ipaddr, link);
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if(link->parent == NULL) {
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/* Igore the DAG root */
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continue;
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}
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current_target = add_node(&child_ipaddr);
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if(current_target == NULL ||
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(current_target->flags & NODE_HAS_TYPE) != 0 ||
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current_target->retries > 5) {
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continue;
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}
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NETSTACK_ROUTING.get_sr_node_ipaddr(&parent_ipaddr, link->parent);
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PRINTF(" ");
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PRINT6ADDR(&child_ipaddr);
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PRINTF(" -> ");
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PRINT6ADDR(&parent_ipaddr);
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PRINTF("\n");
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return true;
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}
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return false;
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}
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#endif /* UIP_CONF_IPV6_RPL */
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/*---------------------------------------------------------------------------*/
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#if (UIP_MAX_ROUTES != 0)
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static bool
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check_routes(void)
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{
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uip_ds6_route_t *r;
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for(r = uip_ds6_route_head(); r != NULL; r = uip_ds6_route_next(r)) {
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current_target = add_node(&r->ipaddr);
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if(current_target == NULL ||
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(current_target->flags & NODE_HAS_TYPE) != 0 ||
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current_target->retries > 5) {
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continue;
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}
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PRINTF(" ");
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PRINT6ADDR(&r->ipaddr);
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PRINTF(" -> ");
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nexthop = uip_ds6_route_nexthop(r);
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if(nexthop != NULL) {
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PRINT6ADDR(nexthop);
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} else {
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PRINTF("-");
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}
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PRINTF("\n");
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return true;
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}
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return false;
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}
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#endif /* (UIP_MAX_ROUTES != 0) */
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(router_process, ev, data)
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{
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/* This way the message can be treated as pointer as usual. */
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static coap_message_t request[1];
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static struct etimer timer;
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PROCESS_BEGIN();
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/* Initialize DAG root */
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NETSTACK_ROUTING.root_start();
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while(1) {
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etimer_set(&timer, CLOCK_SECOND * 5);
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PROCESS_YIELD();
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/* Handle serial line input */
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if(ev == serial_line_event_message) {
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serial_protocol_input((char *) data);
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}
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if(etimer_expired(&timer)) {
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current_target = NULL;
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#if UIP_CONF_IPV6_RPL
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check_rpl_routes();
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#endif /* UIP_CONF_IPV6_RPL */
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#if (UIP_MAX_ROUTES != 0)
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if(current_target == NULL) {
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check_routes();
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}
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#endif /* (UIP_MAX_ROUTES != 0) */
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}
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/* This is a node type discovery */
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if(current_target != NULL &&
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(current_target->flags & NODE_HAS_TYPE) == 0 &&
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current_target->retries < 6) {
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/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
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coap_init_message(request, COAP_TYPE_CON, COAP_GET, 0);
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coap_set_header_uri_path(request, URL_DEVICE_MODEL);
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current_target->retries++;
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PRINTF("CoAP request to [");
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PRINT6ADDR(¤t_target->endpoint.ipaddr);
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PRINTF("]:%u (%u tx)\n", UIP_HTONS(current_target->endpoint.port),
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current_target->retries);
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fetching_type = 1;
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COAP_BLOCKING_REQUEST(¤t_target->endpoint, request,
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client_chunk_handler);
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fetching_type = 0;
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strncpy(current_uri, URL_LIGHT_CONTROL, sizeof(current_uri) - 1);
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printf("\n--Done--\n");
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}
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/* If having a type this is another type of request */
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if(current_target != NULL &&
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(current_target->flags & NODE_HAS_TYPE) && strlen(current_uri) > 0) {
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/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
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coap_init_message(request, COAP_TYPE_CON, current_request, 0);
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coap_set_header_uri_path(request, current_uri);
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if(strlen(current_value) > 0) {
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coap_set_payload(request, (uint8_t *)current_value,
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strlen(current_value));
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}
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PRINTF("CoAP request to [");
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PRINT6ADDR(¤t_target->endpoint.ipaddr);
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PRINTF("]:%u %s\n", UIP_HTONS(current_target->endpoint.port),
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current_uri);
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COAP_BLOCKING_REQUEST(¤t_target->endpoint, request,
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client_chunk_handler);
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/* print out result of command */
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if(current_request == COAP_PUT) {
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printf("s ");
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} else {
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printf("g ");
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}
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uip_debug_ipaddr_print(¤t_target->endpoint.ipaddr);
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printf(" %s %s\n", current_uri, current_value);
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current_target = NULL;
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current_uri[0] = 0;
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current_value[0] = 0;
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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