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osd-contiki/platform/sensinode/viztool.c

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/*
* Copyright (c) 2010, Loughborough University - Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Small UDP app used to retrieve neighbor cache and routing table
* entries and send them to an external endpoint
*
* \author
* George Oikonomou - <oikonomou@users.sourceforge.net>
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "net/ipv6/uip-ds6-route.h"
#include <string.h>
#define DEBUG DEBUG_NONE
#include "net/ip/uip-debug.h"
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#ifndef VIZTOOL_MAX_PAYLOAD_LEN
#define VIZTOOL_MAX_PAYLOAD_LEN 60
#endif
static struct uip_udp_conn *server_conn;
static unsigned char buf[VIZTOOL_MAX_PAYLOAD_LEN];
static int8_t len;
#define VIZTOOL_UDP_PORT 60001
/* Request Bits */
#define REQUEST_TYPE_ND 1
#define REQUEST_TYPE_RT 2
#define REQUEST_TYPE_DRT 3
#define REQUEST_TYPE_ADDR 4
#define REQUEST_TYPE_TOTALS 0xFF
extern uip_ds6_netif_t uip_ds6_if;
static uip_ds6_route_t *rt;
static uip_ds6_defrt_t *defrt;
static uip_ipaddr_t *addr;
/*---------------------------------------------------------------------------*/
static uint8_t
process_request() CC_NON_BANKED
{
uint8_t len;
uint8_t count; /* How many did we pack? */
uint8_t i;
uint8_t left;
uint8_t entry_size;
uip_ds6_nbr_t *nbr;
left = VIZTOOL_MAX_PAYLOAD_LEN - 1;
len = 2; /* start filling the buffer from position [2] */
count = 0;
if(buf[0] == REQUEST_TYPE_ND) {
/* Neighbors */
PRINTF("Neighbors\n");
for(nbr = nbr_table_head(ds6_neighbors);
nbr != NULL;
nbr = nbr_table_next(ds6_neighbors, nbr)) {
entry_size = sizeof(i) + sizeof(uip_ipaddr_t) + sizeof(uip_lladdr_t)
+ sizeof(nbr->state);
PRINTF("%02u: ", i);
PRINT6ADDR(&nbr->ipaddr);
PRINTF(" - ");
PRINTLLADDR(&nbr->lladdr);
PRINTF(" - %u\n", nbr->state);
memcpy(buf + len, &i, sizeof(i));
len += sizeof(i);
memcpy(buf + len, uip_ds6_nbr_get_ipaddr(nbr), sizeof(uip_ipaddr_t));
len += sizeof(uip_ipaddr_t);
memcpy(buf + len, uip_ds6_nbr_get_ll(nbr), sizeof(uip_lladdr_t));
len += sizeof(uip_lladdr_t);
memcpy(buf + len, &nbr->state,
sizeof(nbr->state));
len += sizeof(nbr->state);
count++;
left -= entry_size;
if(left < entry_size) {
break;
}
}
} else if(buf[0] == REQUEST_TYPE_RT) {
uint32_t flip = 0;
PRINTF("Routing table\n");
rt = uip_ds6_route_head();
for(i = buf[1]; i < uip_ds6_route_num_routes(); i++) {
if(rt != NULL) {
entry_size = sizeof(i) + sizeof(rt->ipaddr)
+ sizeof(rt->length)
+ sizeof(rt->state.lifetime)
+ sizeof(rt->state.learned_from);
memcpy(buf + len, &i, sizeof(i));
len += sizeof(i);
memcpy(buf + len, &rt->ipaddr, sizeof(rt->ipaddr));
len += sizeof(rt->ipaddr);
memcpy(buf + len, &rt->length, sizeof(rt->length));
len += sizeof(rt->length);
PRINT6ADDR(&rt->ipaddr);
PRINTF(" - %02x", rt->length);
PRINTF(" - ");
PRINT6ADDR(uip_ds6_route_nexthop(rt));
flip = uip_htonl(rt->state.lifetime);
memcpy(buf + len, &flip, sizeof(flip));
len += sizeof(flip);
PRINTF(" - %08lx", rt->state.lifetime);
memcpy(buf + len, &rt->state.learned_from,
sizeof(rt->state.learned_from));
len += sizeof(rt->state.learned_from);
PRINTF(" - %02x [%u]\n", rt->state.learned_from, entry_size);
count++;
left -= entry_size;
rt = uip_ds6_route_next(rt);
if(left < entry_size) {
break;
}
}
}
} else if(buf[0] == REQUEST_TYPE_DRT) {
uint32_t flip = 0;
PRINTF("Default Route\n");
addr = uip_ds6_defrt_choose();
if(addr != NULL) {
defrt = uip_ds6_defrt_lookup(addr);
}
i = buf[1];
if(defrt != NULL && i < 1) {
entry_size = sizeof(i) + sizeof(defrt->ipaddr)
+ sizeof(defrt->isinfinite);
memcpy(buf + len, &i, sizeof(i));
len += sizeof(i);
memcpy(buf + len, &defrt->ipaddr, sizeof(defrt->ipaddr));
len += sizeof(defrt->ipaddr);
memcpy(buf + len, &defrt->isinfinite, sizeof(defrt->isinfinite));
len += sizeof(defrt->isinfinite);
PRINT6ADDR(&defrt->ipaddr);
PRINTF(" - %u\n", defrt->isinfinite);
count++;
left -= entry_size;
}
} else if(buf[0] == REQUEST_TYPE_ADDR) {
PRINTF("Unicast Addresses\n");
for(i = buf[1]; i < UIP_DS6_ADDR_NB; i++) {
if(uip_ds6_if.addr_list[i].isused) {
entry_size = sizeof(i) + sizeof(uip_ds6_if.addr_list[i].ipaddr);
memcpy(buf + len, &i, sizeof(i));
len += sizeof(i);
memcpy(buf + len, &uip_ds6_if.addr_list[i].ipaddr,
sizeof(uip_ds6_if.addr_list[i].ipaddr));
len += sizeof(uip_ds6_if.addr_list[i].ipaddr);
PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
PRINTF("\n");
count++;
left -= entry_size;
if(left < entry_size) {
break;
}
}
}
} else if(buf[0] == REQUEST_TYPE_TOTALS) {
memset(&buf[2], 0, 4);
for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
if(uip_ds6_if.addr_list[i].isused) {
buf[2]++;
}
}
for(nbr = nbr_table_head(ds6_neighbors);
nbr != NULL;
nbr = nbr_table_next(ds6_neighbors, nbr)) {
buf[3]++;
}
buf[4] = uip_ds6_route_num_routes();
buf[5] = 1;
len += 4;
count = 4;
} else {
return 0;
}
buf[1] = count;
return len;
}
/*---------------------------------------------------------------------------*/
PROCESS(viztool_process, "Network Visualization Tool Process");
/*---------------------------------------------------------------------------*/
static void
tcpip_handler(void) CC_NON_BANKED
{
if(uip_newdata()) {
memset(buf, 0, VIZTOOL_MAX_PAYLOAD_LEN);
PRINTF("%u bytes from [", uip_datalen());
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("]:%u\n", UIP_HTONS(UIP_UDP_BUF->srcport));
memcpy(buf, uip_appdata, uip_datalen());
len = process_request();
if(len) {
server_conn->rport = UIP_UDP_BUF->srcport;
uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
uip_udp_packet_send(server_conn, buf, len);
PRINTF("Sent %u bytes\n", len);
}
/* Restore server connection to allow data from any node */
uip_create_unspecified(&server_conn->ripaddr);
server_conn->rport = 0;
}
return;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(viztool_process, ev, data)
{
PROCESS_BEGIN();
server_conn = udp_new(NULL, UIP_HTONS(0), NULL);
udp_bind(server_conn, UIP_HTONS(VIZTOOL_UDP_PORT));
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
tcpip_handler();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
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