360 lines
9.5 KiB
C
360 lines
9.5 KiB
C
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/*
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* Copyright (c) 2011, Swedish Institute of Computer Science.
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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
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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/ip/uip.h"
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#include "net/ipv6/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/slip.h"
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#include "cmd.h"
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#include "border-router.h"
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#include "border-router-cmds.h"
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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_FULL
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#include "net/ip/uip-debug.h"
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#define MAX_SENSORS 4
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extern long slip_sent;
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extern long slip_received;
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static uip_ipaddr_t prefix;
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static uint8_t prefix_set;
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static uint8_t mac_set;
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static uint8_t sensor_count = 0;
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/* allocate MAX_SENSORS char[32]'s */
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static char sensors[MAX_SENSORS][32];
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extern int contiki_argc;
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extern char **contiki_argv;
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extern const char *slip_config_ipaddr;
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CMD_HANDLERS(border_router_cmd_handler);
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PROCESS(border_router_process, "Border router process");
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#if WEBSERVER==0
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/* No webserver */
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AUTOSTART_PROCESSES(&border_router_process,&border_router_cmd_process);
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#elif WEBSERVER>1
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/* Use an external webserver application */
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#include "webserver-nogui.h"
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AUTOSTART_PROCESSES(&border_router_process,&border_router_cmd_process,
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&webserver_nogui_process);
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#else
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/* Use simple webserver with only one page */
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#include "httpd-simple.h"
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PROCESS(webserver_nogui_process, "Web server");
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PROCESS_THREAD(webserver_nogui_process, ev, data)
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{
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PROCESS_BEGIN();
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httpd_init();
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
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httpd_appcall(data);
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}
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PROCESS_END();
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}
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AUTOSTART_PROCESSES(&border_router_process,&border_router_cmd_process,
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&webserver_nogui_process);
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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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static uip_ds6_route_t *r;
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static uip_ds6_nbr_t *nbr;
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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("Neighbors<pre>");
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for(nbr = nbr_table_head(ds6_neighbors);
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nbr != NULL;
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nbr = nbr_table_next(ds6_neighbors, nbr)) {
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ipaddr_add(&nbr->ipaddr);
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ADD("\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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ADD("</pre>Routes<pre>");
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SEND_STRING(&s->sout, buf);
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blen = 0;
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for(r = uip_ds6_route_head();
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r != NULL;
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r = uip_ds6_route_next(r)) {
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ipaddr_add(&r->ipaddr);
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ADD("/%u (via ", r->length);
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ipaddr_add(uip_ds6_route_nexthop(r));
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if(r->state.lifetime < 600) {
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ADD(") %lus\n", (unsigned long)r->state.lifetime);
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} else {
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ADD(")\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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ADD("</pre>");
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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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if(sensor_count > 0) {
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ADD("</pre>Sensors<pre>");
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SEND_STRING(&s->sout, buf);
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blen = 0;
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for(i = 0; i < sensor_count; i++) {
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ADD("%s\n", sensors[i]);
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SEND_STRING(&s->sout, buf);
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blen = 0;
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}
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ADD("</pre>");
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SEND_STRING(&s->sout, buf);
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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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#endif /* WEBSERVER */
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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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PRINTA("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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PRINTA(" %p: =>", &uip_ds6_if.addr_list[i]);
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uip_debug_ipaddr_print(&(uip_ds6_if.addr_list[i]).ipaddr);
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PRINTA("\n");
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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request_mac(void)
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{
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write_to_slip((uint8_t *)"?M", 2);
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}
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/*---------------------------------------------------------------------------*/
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void
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border_router_set_mac(const uint8_t *data)
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{
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memcpy(uip_lladdr.addr, data, sizeof(uip_lladdr.addr));
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linkaddr_set_node_addr((linkaddr_t *)uip_lladdr.addr);
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/* is this ok - should instead remove all addresses and
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add them back again - a bit messy... ?*/
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uip_ds6_init();
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rpl_init();
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mac_set = 1;
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}
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/*---------------------------------------------------------------------------*/
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void
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border_router_print_stat()
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{
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printf("bytes received over SLIP: %ld\n", slip_received);
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printf("bytes sent over SLIP: %ld\n", slip_sent);
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}
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/*---------------------------------------------------------------------------*/
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/* Format: <name=value>;<name=value>;...;<name=value>*/
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/* this function just cut at ; and store in the sensor array */
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void
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border_router_set_sensors(const char *data, int len)
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{
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int i;
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int last_pos = 0;
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int sc = 0;
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for(i = 0;i < len; i++) {
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if(data[i] == ';') {
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sensors[sc][i - last_pos] = 0;
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memcpy(sensors[sc++], &data[last_pos], i - last_pos);
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last_pos = i + 1; /* skip the ';' */
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}
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if(sc == MAX_SENSORS) {
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sensor_count = sc;
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return;
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}
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}
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sensors[sc][len - last_pos] = 0;
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memcpy(sensors[sc++], &data[last_pos], len - last_pos);
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sensor_count = sc;
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}
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/*---------------------------------------------------------------------------*/
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static void
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set_prefix_64(const uip_ipaddr_t *prefix_64)
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{
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rpl_dag_t *dag;
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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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dag = rpl_set_root(RPL_DEFAULT_INSTANCE, &ipaddr);
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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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}
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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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PROCESS_BEGIN();
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prefix_set = 0;
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PROCESS_PAUSE();
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PRINTF("RPL-Border router started\n");
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slip_config_handle_arguments(contiki_argc, contiki_argv);
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/* tun init is also responsible for setting up the SLIP connection */
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tun_init();
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while(!mac_set) {
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etimer_set(&et, CLOCK_SECOND);
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request_mac();
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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}
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if(slip_config_ipaddr != NULL) {
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uip_ipaddr_t prefix;
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if(uiplib_ipaddrconv((const char *)slip_config_ipaddr, &prefix)) {
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PRINTF("Setting prefix ");
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PRINT6ADDR(&prefix);
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PRINTF("\n");
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set_prefix_64(&prefix);
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} else {
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PRINTF("Parse error: %s\n", slip_config_ipaddr);
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exit(0);
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}
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}
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#if DEBUG
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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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etimer_set(&et, CLOCK_SECOND * 2);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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/* do anything here??? */
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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