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/* tap-hosts.c
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* Dump our collected IPv4- and IPv6-to-hostname mappings */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <string.h>
#include "globals.h"
#include <epan/packet.h>
#include <cfile.h>
#include <epan/proto.h>
#include <epan/tap.h>
#include <epan/stat_cmd_args.h>
#include <epan/addr_resolv.h>
/* Needed for addrinfo */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#if defined(_WIN32) && defined(INET6)
# include <ws2tcpip.h>
#endif
#ifdef NEED_INET_V6DEFS_H
# include "wsutil/inet_v6defs.h"
#endif
gboolean dump_v4 = FALSE;
gboolean dump_v6 = FALSE;
#define TAP_NAME "hosts"
#define HOSTNAME_POS 48
#define ADDRSTRLEN 46 /* Covers IPv4 & IPv6 */
static void
hosts_draw(void *dummy _U_)
{
struct addrinfo *ai;
struct sockaddr_in *sa4;
struct sockaddr_in6 *sa6;
char addr_str[ADDRSTRLEN];
int i, tab_count;
printf("# TShark hosts output\n");
printf("#\n");
printf("# Host data gathered from %s\n", cfile.filename);
printf("\n");
/* Dump the v4 addresses first, then v6 */
for (ai = get_addrinfo_list(); ai; ai = ai->ai_next) {
if (!dump_v4 || ai->ai_family != AF_INET) {
continue;
}
sa4 = (struct sockaddr_in *)(void *)ai->ai_addr;
if (inet_ntop(AF_INET, &(sa4->sin_addr.s_addr), addr_str, ADDRSTRLEN)) {
tab_count = (HOSTNAME_POS - (int)strlen(addr_str)) / 8;
printf("%s", addr_str);
for (i = 0; i < tab_count; i++)
printf("\t");
printf("%s\n", ai->ai_canonname);
}
}
for (ai = get_addrinfo_list(); ai; ai = ai->ai_next) {
if (!dump_v6 || ai->ai_family != AF_INET6) {
continue;
}
sa6 = (struct sockaddr_in6 *)(void *)ai->ai_addr;
if (inet_ntop(AF_INET6, sa6->sin6_addr.s6_addr, addr_str, ADDRSTRLEN)) {
tab_count = (HOSTNAME_POS - (int)strlen(addr_str)) / 8;
printf("%s", addr_str);
for (i = 0; i < tab_count; i++)
printf("\t");
printf("%s\n", ai->ai_canonname);
}
}
}
static void
hosts_init(const char *optarg, void* userdata _U_)
{
GString *error_string;
gchar **tokens;
gint opt_count;
dump_v4 = FALSE;
dump_v6 = FALSE;
if(strcmp(TAP_NAME, optarg)==0) {
/* No arguments; dump everything */
dump_v4 = TRUE;
dump_v6 = TRUE;
} else {
tokens = g_strsplit(optarg,",", 0);
opt_count=0;
while (tokens[opt_count]) {
if (strcmp("ipv4", tokens[opt_count]) == 0) {
dump_v4 = TRUE;
} else if (strcmp("ipv6", tokens[opt_count]) == 0) {
dump_v6 = TRUE;
} else if (opt_count > 0) {
fprintf(stderr, "tshark: invalid \"-z " TAP_NAME "[,ipv4|ipv6]\" argument\n");
exit(1);
}
opt_count++;
}
g_strfreev(tokens);
}
error_string=register_tap_listener("frame", NULL, NULL, TL_REQUIRES_PROTO_TREE,
NULL, NULL, hosts_draw);
if(error_string){
/* error, we failed to attach to the tap. clean up */
fprintf(stderr, "tshark: Couldn't register " TAP_NAME " tap: %s\n",
error_string->str);
g_string_free(error_string, TRUE);
exit(1);
}
}
void
register_tap_listener_hosts(void)
{
register_stat_cmd_arg(TAP_NAME, hosts_init, NULL);
}
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