298 lines
9.8 KiB
C
298 lines
9.8 KiB
C
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/*
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* Copyright (c) 2010, Loughborough University - 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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* \file
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* Small UDP app used to retrieve neighbor cache and routing table
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* entries and send them to an external endpoint
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*
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* \author
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* George Oikonomou - <oikonomou@users.sourceforge.net>
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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 <string.h>
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#define DEBUG DEBUG_NONE
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#include "net/uip-debug.h"
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
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#ifndef VIZTOOL_MAX_PAYLOAD_LEN
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#define VIZTOOL_MAX_PAYLOAD_LEN 60
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#endif
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static struct uip_udp_conn *server_conn;
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static unsigned char buf[VIZTOOL_MAX_PAYLOAD_LEN];
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static int8_t len;
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#define VIZTOOL_UDP_PORT 60001
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/* Request Bits */
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#define REQUEST_TYPE_ND 1
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#define REQUEST_TYPE_RT 2
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#define REQUEST_TYPE_DRT 3
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#define REQUEST_TYPE_ADDR 4
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#define REQUEST_TYPE_TOTALS 0xFF
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extern uip_ds6_netif_t uip_ds6_if;
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extern uip_ds6_route_t uip_ds6_routing_table[UIP_DS6_ROUTE_NB];
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extern uip_ds6_nbr_t uip_ds6_nbr_cache[UIP_DS6_NBR_NB];
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extern uip_ds6_defrt_t uip_ds6_defrt_list[UIP_DS6_DEFRT_NB];
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/*---------------------------------------------------------------------------*/
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static uint8_t
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process_request()
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{
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uint8_t len;
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uint8_t count; /* How many did we pack? */
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uint8_t i;
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uint8_t left;
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uint8_t entry_size;
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left = VIZTOOL_MAX_PAYLOAD_LEN - 1;
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len = 2; /* start filling the buffer from position [2] */
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count = 0;
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if(buf[0] == REQUEST_TYPE_ND) {
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/* Neighbors */
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PRINTF("Neighbors\n");
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for(i = buf[1]; i < UIP_DS6_NBR_NB; i++) {
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if(uip_ds6_nbr_cache[i].isused) {
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entry_size = sizeof(i) + sizeof(uip_ipaddr_t) + sizeof(uip_lladdr_t)
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+ sizeof(uip_ds6_nbr_cache[i].state);
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PRINTF("%02u: ", i);
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PRINT6ADDR(&uip_ds6_nbr_cache[i].ipaddr);
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PRINTF(" - ");
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PRINTLLADDR(&uip_ds6_nbr_cache[i].lladdr);
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PRINTF(" - %u\n", uip_ds6_nbr_cache[i].state);
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memcpy(buf + len, &i, sizeof(i));
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len += sizeof(i);
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memcpy(buf + len, &uip_ds6_nbr_cache[i].ipaddr, sizeof(uip_ipaddr_t));
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len += sizeof(uip_ipaddr_t);
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memcpy(buf + len, &uip_ds6_nbr_cache[i].lladdr, sizeof(uip_lladdr_t));
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len += sizeof(uip_lladdr_t);
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memcpy(buf + len, &uip_ds6_nbr_cache[i].state,
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sizeof(uip_ds6_nbr_cache[i].state));
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len += sizeof(uip_ds6_nbr_cache[i].state);
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count++;
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left -= entry_size;
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if(left < entry_size) {
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break;
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}
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}
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}
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} else if(buf[0] == REQUEST_TYPE_RT) {
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uint32_t flip = 0;
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PRINTF("Routing table\n");
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for(i = buf[1]; i < UIP_DS6_ROUTE_NB; i++) {
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if(uip_ds6_routing_table[i].isused) {
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entry_size = sizeof(i) + sizeof(uip_ds6_routing_table[i].ipaddr)
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+ sizeof(uip_ds6_routing_table[i].length)
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+ sizeof(uip_ds6_routing_table[i].metric)
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+ sizeof(uip_ds6_routing_table[i].nexthop)
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+ sizeof(uip_ds6_routing_table[i].state.lifetime)
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+ sizeof(uip_ds6_routing_table[i].state.learned_from);
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memcpy(buf + len, &i, sizeof(i));
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len += sizeof(i);
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memcpy(buf + len, &uip_ds6_routing_table[i].ipaddr,
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sizeof(uip_ds6_routing_table[i].ipaddr));
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len += sizeof(uip_ds6_routing_table[i].ipaddr);
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memcpy(buf + len, &uip_ds6_routing_table[i].length,
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sizeof(uip_ds6_routing_table[i].length));
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len += sizeof(uip_ds6_routing_table[i].length);
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memcpy(buf + len, &uip_ds6_routing_table[i].metric,
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sizeof(uip_ds6_routing_table[i].metric));
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len += sizeof(uip_ds6_routing_table[i].metric);
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memcpy(buf + len, &uip_ds6_routing_table[i].nexthop,
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sizeof(uip_ds6_routing_table[i].nexthop));
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len += sizeof(uip_ds6_routing_table[i].nexthop);
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PRINT6ADDR(&uip_ds6_routing_table[i].ipaddr);
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PRINTF(" - %02x", uip_ds6_routing_table[i].length);
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PRINTF(" - %02x", uip_ds6_routing_table[i].metric);
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PRINTF(" - ");
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PRINT6ADDR(&uip_ds6_routing_table[i].nexthop);
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flip = uip_htonl(uip_ds6_routing_table[i].state.lifetime);
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memcpy(buf + len, &flip, sizeof(flip));
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len += sizeof(flip);
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PRINTF(" - %08lx", uip_ds6_routing_table[i].state.lifetime);
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memcpy(buf + len, &uip_ds6_routing_table[i].state.learned_from,
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sizeof(uip_ds6_routing_table[i].state.learned_from));
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len += sizeof(uip_ds6_routing_table[i].state.learned_from);
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PRINTF(" - %02x [%u]\n", uip_ds6_routing_table[i].state.learned_from,
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entry_size);
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count++;
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left -= entry_size;
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if(left < entry_size) {
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break;
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}
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}
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}
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} else if (buf[0] == REQUEST_TYPE_DRT) {
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uint32_t flip = 0;
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PRINTF("Default Routes\n");
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for(i = buf[1]; i < UIP_DS6_DEFRT_NB; i++) {
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if(uip_ds6_defrt_list[i].isused) {
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entry_size = sizeof(i) + sizeof(uip_ds6_defrt_list[i].ipaddr)
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+ sizeof(uip_ds6_defrt_list[i].isinfinite);
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memcpy(buf + len, &i, sizeof(i));
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len += sizeof(i);
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memcpy(buf + len, &uip_ds6_defrt_list[i].ipaddr,
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sizeof(uip_ds6_defrt_list[i].ipaddr));
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len += sizeof(uip_ds6_defrt_list[i].ipaddr);
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memcpy(buf + len, &uip_ds6_defrt_list[i].isinfinite,
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sizeof(uip_ds6_defrt_list[i].isinfinite));
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len += sizeof(uip_ds6_defrt_list[i].isinfinite);
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PRINT6ADDR(&uip_ds6_defrt_list[i].ipaddr);
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PRINTF(" - %u\n", uip_ds6_defrt_list[i].isinfinite);
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count++;
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left -= entry_size;
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if(left < entry_size) {
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break;
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}
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}
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}
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} else if (buf[0] == REQUEST_TYPE_ADDR) {
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PRINTF("Unicast Addresses\n");
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for(i = buf[1]; i < UIP_DS6_ADDR_NB; i++) {
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if(uip_ds6_if.addr_list[i].isused) {
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entry_size = sizeof(i) + sizeof(uip_ds6_if.addr_list[i].ipaddr);
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memcpy(buf + len, &i, sizeof(i));
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len += sizeof(i);
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memcpy(buf + len, &uip_ds6_if.addr_list[i].ipaddr,
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sizeof(uip_ds6_if.addr_list[i].ipaddr));
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len += sizeof(uip_ds6_if.addr_list[i].ipaddr);
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PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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PRINTF("\n");
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count++;
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left -= entry_size;
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if(left < entry_size) {
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break;
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}
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}
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}
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} else if (buf[0] == REQUEST_TYPE_TOTALS) {
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memset(&buf[2], 0, 4);
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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if(uip_ds6_if.addr_list[i].isused) {
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buf[2]++;
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}
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}
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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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buf[3]++;
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}
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}
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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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buf[4]++;
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}
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}
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for(i = 0; i < UIP_DS6_DEFRT_NB; i++) {
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if(uip_ds6_defrt_list[i].isused) {
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buf[5]++;
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}
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}
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len += 4;
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count = 4;
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} else {
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return 0;
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}
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buf[1] = count;
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return len;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS(viztool_process, "Network Visualization Tool Process");
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/*---------------------------------------------------------------------------*/
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static void
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tcpip_handler(void)
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{
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if(uip_newdata()) {
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memset(buf, 0, VIZTOOL_MAX_PAYLOAD_LEN);
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PRINTF("%u bytes from [", uip_datalen());
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF("]:%u\n", UIP_HTONS(UIP_UDP_BUF->srcport));
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memcpy(buf, uip_appdata, uip_datalen());
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len = process_request();
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if(len) {
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server_conn->rport = UIP_UDP_BUF->srcport;
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uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
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uip_udp_packet_send(server_conn, buf, len);
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PRINTF("Sent %u bytes\n", len);
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}
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/* Restore server connection to allow data from any node */
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uip_create_unspecified(&server_conn->ripaddr);
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server_conn->rport = 0;
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(viztool_process, ev, data)
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{
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PROCESS_BEGIN();
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server_conn = udp_new(NULL, UIP_HTONS(0), NULL);
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udp_bind(server_conn, UIP_HTONS(VIZTOOL_UDP_PORT));
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while(1) {
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PROCESS_YIELD();
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if(ev == tcpip_event) {
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tcpip_handler();
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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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