178 lines
4 KiB
C
178 lines
4 KiB
C
/* tap-hosts.c
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* Dump our collected IPv4- and IPv6-to-hostname mappings */
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#include "config.h"
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#include <stdio.h>
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#include <string.h>
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#include "globals.h"
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#include <epan/packet.h>
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#include <cfile.h>
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#include <epan/proto.h>
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#include <epan/tap.h>
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#include <epan/stat_cmd_args.h>
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#include <epan/addr_resolv.h>
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/* Needed for addrinfo */
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#ifdef HAVE_WINSOCK2_H
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# include <winsock2.h>
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#endif
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#if defined(_WIN32) && defined(INET6)
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# include <ws2tcpip.h>
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#endif
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#ifdef NEED_INET_V6DEFS_H
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# include "wsutil/inet_v6defs.h"
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#endif
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gboolean dump_v4 = FALSE;
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gboolean dump_v6 = FALSE;
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#define TAP_NAME "hosts"
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#define HOSTNAME_POS 48
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#define ADDRSTRLEN 46 /* Covers IPv4 & IPv6 */
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static void
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hosts_draw(void *dummy _U_)
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{
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struct addrinfo *ai;
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struct sockaddr_in *sa4;
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struct sockaddr_in6 *sa6;
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char addr_str[ADDRSTRLEN];
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int i, tab_count;
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printf("# TShark hosts output\n");
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printf("#\n");
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printf("# Host data gathered from %s\n", cfile.filename);
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printf("\n");
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/* Dump the v4 addresses first, then v6 */
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for (ai = get_addrinfo_list(); ai; ai = ai->ai_next) {
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if (!dump_v4 || ai->ai_family != AF_INET) {
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continue;
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}
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sa4 = (struct sockaddr_in *)(void *)ai->ai_addr;
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if (inet_ntop(AF_INET, &(sa4->sin_addr.s_addr), addr_str, ADDRSTRLEN)) {
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tab_count = (HOSTNAME_POS - (int)strlen(addr_str)) / 8;
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printf("%s", addr_str);
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for (i = 0; i < tab_count; i++)
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printf("\t");
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printf("%s\n", ai->ai_canonname);
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}
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}
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for (ai = get_addrinfo_list(); ai; ai = ai->ai_next) {
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if (!dump_v6 || ai->ai_family != AF_INET6) {
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continue;
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}
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sa6 = (struct sockaddr_in6 *)(void *)ai->ai_addr;
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if (inet_ntop(AF_INET6, sa6->sin6_addr.s6_addr, addr_str, ADDRSTRLEN)) {
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tab_count = (HOSTNAME_POS - (int)strlen(addr_str)) / 8;
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printf("%s", addr_str);
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for (i = 0; i < tab_count; i++)
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printf("\t");
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printf("%s\n", ai->ai_canonname);
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}
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}
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}
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static void
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hosts_init(const char *optarg, void* userdata _U_)
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{
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GString *error_string;
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gchar **tokens;
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gint opt_count;
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dump_v4 = FALSE;
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dump_v6 = FALSE;
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if(strcmp(TAP_NAME, optarg)==0) {
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/* No arguments; dump everything */
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dump_v4 = TRUE;
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dump_v6 = TRUE;
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} else {
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tokens = g_strsplit(optarg,",", 0);
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opt_count=0;
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while (tokens[opt_count]) {
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if (strcmp("ipv4", tokens[opt_count]) == 0) {
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dump_v4 = TRUE;
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} else if (strcmp("ipv6", tokens[opt_count]) == 0) {
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dump_v6 = TRUE;
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} else if (opt_count > 0) {
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fprintf(stderr, "tshark: invalid \"-z " TAP_NAME "[,ipv4|ipv6]\" argument\n");
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exit(1);
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}
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opt_count++;
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}
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g_strfreev(tokens);
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}
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error_string=register_tap_listener("frame", NULL, NULL, TL_REQUIRES_PROTO_TREE,
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NULL, NULL, hosts_draw);
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if(error_string){
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/* error, we failed to attach to the tap. clean up */
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fprintf(stderr, "tshark: Couldn't register " TAP_NAME " tap: %s\n",
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error_string->str);
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g_string_free(error_string, TRUE);
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exit(1);
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}
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}
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void
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register_tap_listener_hosts(void)
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{
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register_stat_cmd_arg(TAP_NAME, hosts_init, NULL);
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}
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