forked from osmocom/wireshark
158 lines
3.3 KiB
C
158 lines
3.3 KiB
C
/* tap-hosts.c
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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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 <stdlib.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 <epan/tap.h>
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#include <epan/stat_tap_ui.h>
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#include <epan/addr_resolv.h>
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#include <wsutil/cmdarg_err.h>
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void register_tap_listener_hosts(void);
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static gboolean dump_v4 = FALSE;
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static gboolean dump_v6 = FALSE;
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#define TAP_NAME "hosts"
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static void
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ipv4_hash_table_print_resolved(gpointer key _U_, gpointer value, gpointer user_data _U_)
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{
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hashipv4_t *ipv4_hash_table_entry = (hashipv4_t *)value;
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if ((ipv4_hash_table_entry->flags & NAME_RESOLVED)) {
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printf("%s\t%s\n",
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ipv4_hash_table_entry->ip,
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ipv4_hash_table_entry->name);
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}
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}
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static void
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ipv6_hash_table_print_resolved(gpointer key _U_, gpointer value, gpointer user_data _U_)
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{
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hashipv6_t *ipv6_hash_table_entry = (hashipv6_t *)value;
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if ((ipv6_hash_table_entry->flags & NAME_RESOLVED)) {
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printf("%s\t%s\n",
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ipv6_hash_table_entry->ip6,
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ipv6_hash_table_entry->name);
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}
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}
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static void
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hosts_draw(void *dummy _U_)
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{
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wmem_map_t *ipv4_hash_table;
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wmem_map_t *ipv6_hash_table;
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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",
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cfile.is_tempfile ? "the temporary capture file" : cfile.filename);
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printf("\n");
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if (dump_v4) {
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ipv4_hash_table = get_ipv4_hash_table();
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if (ipv4_hash_table) {
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wmem_map_foreach( ipv4_hash_table, ipv4_hash_table_print_resolved, NULL);
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}
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}
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if (dump_v6) {
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ipv6_hash_table = get_ipv6_hash_table();
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if (ipv6_hash_table) {
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wmem_map_foreach( ipv6_hash_table, ipv6_hash_table_print_resolved, NULL);
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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 *opt_arg, 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, opt_arg) == 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(opt_arg, ",", 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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(strcmp("ip", 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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cmdarg_err("invalid \"-z " TAP_NAME "[,ip|ipv4|ipv6]\" argument");
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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, NULL);
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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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cmdarg_err("Couldn't register " TAP_NAME " tap: %s",
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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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static stat_tap_ui hosts_ui = {
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REGISTER_STAT_GROUP_GENERIC,
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NULL,
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TAP_NAME,
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hosts_init,
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0,
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NULL
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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_tap_ui(&hosts_ui, NULL);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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