246 lines
7 KiB
C
246 lines
7 KiB
C
/*
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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
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* 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 Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* border-router
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* \author
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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* Nicolas Tsiftes <nvt@sics.se>
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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include "net/uip.h"
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#include "net/uip-ds6.h"
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#include "net/rpl/rpl.h"
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#include "net/netstack.h"
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#include "dev/button-sensor.h"
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#include "dev/slip.h"
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#define INTERNAL_WEBSERVER 1
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#if INTERNAL_WEBSERVER
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#include "webserver-nogui.h"
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#include "httpd-simple.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#define DEBUG DEBUG_PRINT
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#include "net/uip-debug.h"
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uint16_t dag_id[] = {0x1111, 0x1100, 0, 0, 0, 0, 0, 0x0011};
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extern uip_ds6_nbr_t uip_ds6_nbr_cache[];
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extern uip_ds6_route_t uip_ds6_routing_table[];
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static uip_ipaddr_t prefix;
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static uint8_t prefix_set;
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PROCESS(border_router_process, "Border router process");
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AUTOSTART_PROCESSES(&border_router_process);
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#if INTERNAL_WEBSERVER
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/*---------------------------------------------------------------------------*/
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/* Only one single web request at time */
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static const char *TOP = "<html><head><title>ContikiRPL</title></head><body>\n";
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static const char *BOTTOM = "</body></html>\n";
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static char buf[128];
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static int blen;
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#define ADD(...) do { \
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blen += snprintf(&buf[blen], sizeof(buf) - blen, __VA_ARGS__); \
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} while(0)
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/*---------------------------------------------------------------------------*/
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static void
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ipaddr_add(const uip_ipaddr_t *addr)
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{
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uint16_t a;
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int i, f;
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for(i = 0, f = 0; i < sizeof(uip_ipaddr_t); i += 2) {
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a = (addr->u8[i] << 8) + addr->u8[i + 1];
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if(a == 0 && f >= 0) {
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if(f++ == 0 && sizeof(buf) - blen >= 2) {
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buf[blen++] = ':';
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buf[blen++] = ':';
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}
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} else {
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if(f > 0) {
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f = -1;
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} else if(i > 0 && blen < sizeof(buf)) {
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buf[blen++] = ':';
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}
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ADD("%x", a);
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(generate_routes(struct httpd_state *s))
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{
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static int i;
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PSOCK_BEGIN(&s->sout);
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SEND_STRING(&s->sout, TOP);
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blen = 0;
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ADD("<h2>Neighbors</h2>");
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for(i = 0; i < UIP_DS6_NBR_NB; i++) {
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if(uip_ds6_nbr_cache[i].isused) {
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ipaddr_add(&uip_ds6_nbr_cache[i].ipaddr);
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ADD("<br>\n");
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if(blen > sizeof(buf) - 45) {
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SEND_STRING(&s->sout, buf);
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blen = 0;
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}
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}
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}
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ADD("<h2>Routes</h2>");
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SEND_STRING(&s->sout, buf);
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blen = 0;
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for(i = 0; i < UIP_DS6_ROUTE_NB; i++) {
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if(uip_ds6_routing_table[i].isused) {
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ipaddr_add(&uip_ds6_routing_table[i].ipaddr);
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ADD("/%u (via ", uip_ds6_routing_table[i].length);
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ipaddr_add(&uip_ds6_routing_table[i].nexthop);
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if(uip_ds6_routing_table[i].state.lifetime < 600) {
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ADD(") %lus<br>\n", uip_ds6_routing_table[i].state.lifetime);
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} else {
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ADD(")<br>\n");
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}
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SEND_STRING(&s->sout, buf);
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blen = 0;
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}
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}
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if(blen > 0) {
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SEND_STRING(&s->sout, buf);
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blen = 0;
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}
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SEND_STRING(&s->sout, BOTTOM);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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httpd_simple_script_t
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httpd_simple_get_script(const char *name)
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{
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return generate_routes;
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}
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/*---------------------------------------------------------------------------*/
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static void
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print_local_addresses(void)
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{
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int i;
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uint8_t state;
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PRINTF("Server IPv6 addresses:\n");
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(uip_ds6_if.addr_list[i].isused &&
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(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
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blen = 0;
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ipaddr_add(&uip_ds6_if.addr_list[i].ipaddr);
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PRINTF(" %s\n", buf);
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}
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}
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}
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#endif /* INTERNAL_WEBSERVER */
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/*---------------------------------------------------------------------------*/
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void
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request_prefix(void)
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{
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/* mess up uip_buf with a dirty request... */
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uip_buf[0] = '?';
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uip_buf[1] = 'P';
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uip_len = 2;
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slip_send();
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uip_len = 0;
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}
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/*---------------------------------------------------------------------------*/
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void
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set_prefix_64(uip_ipaddr_t *prefix_64)
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{
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uip_ipaddr_t ipaddr;
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memcpy(&prefix, prefix_64, 16);
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memcpy(&ipaddr, prefix_64, 16);
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prefix_set = 1;
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(border_router_process, ev, data)
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{
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static struct etimer et;
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rpl_dag_t *dag;
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PROCESS_BEGIN();
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prefix_set = 0;
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PROCESS_PAUSE();
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#if INTERNAL_WEBSERVER
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process_start(&webserver_nogui_process, NULL);
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#endif
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SENSORS_ACTIVATE(button_sensor);
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PRINTF("RPL-Border router started\n");
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/* Request prefix until it has been received */
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while(!prefix_set) {
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etimer_set(&et, CLOCK_SECOND);
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request_prefix();
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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}
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dag = rpl_set_root((uip_ip6addr_t *)dag_id);
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if(dag != NULL) {
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rpl_set_prefix(dag, &prefix, 64);
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PRINTF("created a new RPL dag\n");
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}
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#if INTERNAL_WEBSERVER
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print_local_addresses();
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#endif
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/* The border router runs with a 100% duty cycle in order to ensure high
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packet reception rates. */
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NETSTACK_MAC.off(1);
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while(1) {
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PROCESS_YIELD();
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if (ev == sensors_event && data == &button_sensor) {
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PRINTF("Initiating global repair\n");
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rpl_repair_dag(rpl_get_dag(RPL_ANY_INSTANCE));
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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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