fb11e647
 vrobic
reseau statique a...
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/*
* Copyright (C) 2015 Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup sys_shell_commands
* @{
*
* @file
* @brief Provides shell commands to manage and show FIB Entries
*
* @author 2015 Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
*
* @}
*/
#include <arpa/inet.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include "thread.h"
#include "net/af.h"
#ifdef MODULE_GNRC_NETIF
#include "net/gnrc/netif.h"
#endif
#include "net/fib.h"
#include "net/gnrc/ipv6.h"
#define INFO1_TXT "fibroute add <destination> via <next hop> [dev <device>]"
#define INFO2_TXT " [lifetime <lifetime>]"
#define INFO3_TXT " <destination> - the destination address with optional prefix size, e.g. /116\n" \
" <next hop> - the address of the next-hop towards the <destination>\n" \
" <device> - the device id of the Interface to use." \
" Optional if only one interface is available.\n"
#define INFO4_TXT " <lifetime> - optional lifetime in ms when the entry automatically invalidates\n"
#define INFO5_TXT "fibroute del <destination>\n" \
" <destination> - the destination address of the entry to be deleted\n"
static unsigned char tmp_ipv4_dst[INADDRSZ]; /**< buffer for ipv4 address conversion */
static unsigned char tmp_ipv4_nxt[INADDRSZ]; /**< buffer for ipv4 address conversion */
static unsigned char tmp_ipv6_dst[IN6ADDRSZ]; /**< buffer for ipv6 address conversion */
static unsigned char tmp_ipv6_nxt[IN6ADDRSZ]; /**< buffer for ipv6 address conversion */
static void _fib_usage(int info)
{
switch (info) {
case 0: {
puts("\nsee <fibroute [add|del]> for more information\n"
"<fibroute flush [interface]> removes all entries [associated with interface]\n");
break;
}
case 1: {
puts("\nbrief: adds a new entry to the FIB.\nusage: "
INFO1_TXT "\n" INFO3_TXT);
break;
}
case 2: {
puts("\nbrief: adds a new entry to the FIB.\nusage: "
INFO1_TXT INFO2_TXT "\n" INFO3_TXT INFO4_TXT);
break;
}
case 3: {
puts("\nbrief: deletes an entry from the FIB.\nusage: "
INFO5_TXT);
break;
}
default:
break;
};
}
static void _fib_add(const char *dest, const char *next, kernel_pid_t pid, uint32_t lifetime)
{
uint32_t prefix = 0;
/* Get the prefix length */
size_t i = 0;
for (i = strlen(dest); i > 0; --i) {
if (dest[i] == '/') {
prefix = atoi(&dest[i+1]);
break;
}
if (dest[i] == ':' || dest[i] == '.') {
i = strlen(dest);
break;
}
}
size_t dst_size = (i+1);
unsigned char dst_arr[dst_size];
memset(dst_arr, 0, dst_size);
memcpy(dst_arr, dest, i);
unsigned char *dst = &dst_arr[0];
uint32_t dst_flags = 0;
unsigned char *nxt = (unsigned char *)next;
size_t nxt_size = (strlen(next));
uint32_t nxt_flags = 0;
/* determine destination address */
if (inet_pton(AF_INET6, (char*)dst, tmp_ipv6_dst)) {
dst = tmp_ipv6_dst;
dst_size = IN6ADDRSZ;
}
else if (inet_pton(AF_INET, dest, tmp_ipv4_dst)) {
dst = tmp_ipv4_dst;
dst_size = INADDRSZ;
}
/* determine next-hop address */
if (inet_pton(AF_INET6, next, tmp_ipv6_nxt)) {
nxt = tmp_ipv6_nxt;
nxt_size = IN6ADDRSZ;
}
else if (inet_pton(AF_INET, next, tmp_ipv4_nxt)) {
nxt = tmp_ipv4_nxt;
nxt_size = INADDRSZ;
}
dst_flags |= (prefix << FIB_FLAG_NET_PREFIX_SHIFT);
fib_add_entry(&gnrc_ipv6_fib_table, pid, dst, dst_size, dst_flags, nxt,
nxt_size, nxt_flags, lifetime);
}
int _fib_route_handler(int argc, char **argv)
{
/* e.g. fibroute right now dont care about the adress/protocol family */
if (argc == 1) {
fib_print_routes(&gnrc_ipv6_fib_table);
return 0;
}
/* e.g. firoute [add|del] */
if (argc == 2) {
if ((strcmp("add", argv[1]) == 0)) {
_fib_usage(2);
}
else if ((strcmp("del", argv[1]) == 0)) {
_fib_usage(3);
}
else if ((strcmp("flush", argv[1]) == 0)) {
fib_flush(&gnrc_ipv6_fib_table, KERNEL_PID_UNDEF);
puts("successfully flushed all entries");
}
else {
_fib_usage(0);
}
return 1;
}
if (argc > 2 && !((strcmp("add", argv[1]) == 0) ||
(strcmp("del", argv[1]) == 0) ||
(strcmp("flush", argv[1]) == 0))) {
puts("\nunrecognized parameter2.\nPlease enter fibroute [add|del] for more information.");
return 1;
}
/* e.g. fibroute del <destination> */
if (argc == 3) {
if ((strcmp("flush", argv[1]) == 0)) {
kernel_pid_t iface = atoi(argv[2]);
if (gnrc_netif_exist(iface)) {
fib_flush(&gnrc_ipv6_fib_table, iface);
printf("successfully flushed all entries for interface %" PRIu16"\n", iface);
}
else {
printf("interface %" PRIu16" does not exist\n", iface);
}
}
else if (inet_pton(AF_INET6, argv[2], tmp_ipv6_dst)) {
fib_remove_entry(&gnrc_ipv6_fib_table, tmp_ipv6_dst, IN6ADDRSZ);
}
else if (inet_pton(AF_INET, argv[2], tmp_ipv4_dst)) {
fib_remove_entry(&gnrc_ipv6_fib_table, tmp_ipv4_dst, INADDRSZ);
}
else {
fib_remove_entry(&gnrc_ipv6_fib_table, (uint8_t *)argv[2],
(strlen(argv[2])));
}
return 0;
}
#ifdef MODULE_GNRC_NETIF
/* e.g. fibroute add <destination> via <next hop> */
if ((argc == 5) && (strcmp("add", argv[1]) == 0) && (strcmp("via", argv[3]) == 0)) {
kernel_pid_t ifs[GNRC_NETIF_NUMOF];
size_t ifnum = gnrc_netif_get(ifs);
if (ifnum == 1) {
_fib_add(argv[2], argv[4], ifs[0], (uint32_t)FIB_LIFETIME_NO_EXPIRE);
}
else {
_fib_usage(1);
return 1;
}
return 0;
}
/* e.g. fibroute add <destination> via <next hop> lifetime <lifetime> */
if ((argc == 7) && (strcmp("add", argv[1]) == 0) && (strcmp("via", argv[3]) == 0)
&& (strcmp("lifetime", argv[5]) == 0)) {
kernel_pid_t ifs[GNRC_NETIF_NUMOF];
size_t ifnum = gnrc_netif_get(ifs);
if (ifnum == 1) {
_fib_add(argv[2], argv[4], ifs[0], (uint32_t)atoi(argv[6]));
}
else {
_fib_usage(1);
return 1;
}
return 0;
}
#endif
/* e.g. fibroute add <destination> via <next hop> dev <device> */
if (argc == 7) {
if ((strcmp("add", argv[1]) == 0) && (strcmp("via", argv[3]) == 0)
&& (strcmp("dev", argv[5]) == 0)) {
_fib_add(argv[2], argv[4], (kernel_pid_t)atoi(argv[6]), (uint32_t)FIB_LIFETIME_NO_EXPIRE);
}
else {
_fib_usage(1);
return 1;
}
return 0;
}
/* e.g. fibroute add <destination> via <next hop> dev <device> lifetime <lifetime> */
if (argc == 9) {
if ((strcmp("add", argv[1]) == 0) && (strcmp("via", argv[3]) == 0)
&& (strcmp("dev", argv[5]) == 0)
&& (strcmp("lifetime", argv[7]) == 0)) {
_fib_add(argv[2], argv[4], (kernel_pid_t )atoi(argv[6]), (uint32_t)atoi(argv[8]));
}
else {
_fib_usage(2);
return 1;
}
return 0;
}
puts("\nunrecognized parameters.\nPlease enter fibroute [add|del] for more information.");
return 1;
}
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