ui/cli/tap-hosts.c

   1 /* tap-hosts.c
   2  *
   3  * Wireshark - Network traffic analyzer
   4  * By Gerald Combs <gerald@wireshark.org>
   5  * Copyright 1998 Gerald Combs
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 /* Dump our collected IPv4- and IPv6-to-hostname mappings */
  23
  24 #include "config.h"
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "globals.h"
  30
  31 #include <epan/packet.h>
  32 #include <epan/tap.h>
  33 #include <epan/stat_tap_ui.h>
  34 #include <epan/addr_resolv.h>
  35
  36 void register_tap_listener_hosts(void);
  37
  38 gboolean dump_v4 = FALSE;
  39 gboolean dump_v6 = FALSE;
  40
  41 #define TAP_NAME "hosts"
  42
  43 #define HOSTNAME_POS 48
  44 #define ADDRSTRLEN 46 /* Covers IPv4 & IPv6 */
  45
  46 static void
  47 ipv4_hash_table_print_resolved(gpointer key _U_, gpointer value, gpointer user_data _U_)
  48 {
  49         hashipv4_t *ipv4_hash_table_entry = (hashipv4_t *)value;
  50
  51         if (!(ipv4_hash_table_entry->flags & DUMMY_ADDRESS_ENTRY)) {
  52                 printf("%s\t%s\n",
  53                        ipv4_hash_table_entry->ip,
  54                        ipv4_hash_table_entry->name);
  55         }
  56 }
  57
  58 static void
  59 ipv6_hash_table_print_resolved(gpointer key _U_, gpointer value, gpointer user_data _U_)
  60 {
  61         hashipv6_t *ipv6_hash_table_entry = (hashipv6_t *)value;
  62
  63         if (!(ipv6_hash_table_entry->flags & DUMMY_ADDRESS_ENTRY)) {
  64                 printf("%s\t%s\n",
  65                        ipv6_hash_table_entry->ip6,
  66                        ipv6_hash_table_entry->name);
  67         }
  68 }
  69
  70 static void
  71 hosts_draw(void *dummy _U_)
  72 {
  73
  74         wmem_map_t *ipv4_hash_table;
  75         wmem_map_t *ipv6_hash_table;
  76
  77         printf("# TShark hosts output\n");
  78         printf("#\n");
  79         printf("# Host data gathered from %s\n", cfile.filename);
  80         printf("\n");
  81
  82         ipv4_hash_table = get_ipv4_hash_table();
  83         if (ipv4_hash_table) {
  84                 wmem_map_foreach( ipv4_hash_table, ipv4_hash_table_print_resolved, NULL);
  85         }
  86
  87         ipv6_hash_table = get_ipv6_hash_table();
  88         if (ipv6_hash_table) {
  89                 wmem_map_foreach( ipv6_hash_table, ipv6_hash_table_print_resolved, NULL);
  90         }
  91
  92 }
  93
  94
  95 static void
  96 hosts_init(const char *opt_arg, void *userdata _U_)
  97 {
  98         gchar *error_string;
  99         gchar **tokens;
 100         gint opt_count;
 101
 102         dump_v4 = FALSE;
 103         dump_v6 = FALSE;
 104
 105         if (strcmp(TAP_NAME, opt_arg) == 0) {
 106                 /* No arguments; dump everything */
 107                 dump_v4 = TRUE;
 108                 dump_v6 = TRUE;
 109         } else {
 110                 tokens = g_strsplit(opt_arg, ",", 0);
 111                 opt_count = 0;
 112                 while (tokens[opt_count]) {
 113                         if (strcmp("ipv4", tokens[opt_count]) == 0) {
 114                                 dump_v4 = TRUE;
 115                         } else if (strcmp("ipv6", tokens[opt_count]) == 0) {
 116                                 dump_v6 = TRUE;
 117                         } else if (opt_count > 0) {
 118                                 fprintf(stderr, "tshark: invalid \"-z " TAP_NAME "[,ipv4|ipv6]\" argument\n");
 119                                 exit(1);
 120                         }
 121                         opt_count++;
 122                 }
 123                 g_strfreev(tokens);
 124         }
 125
 126         error_string = register_tap_listener("frame", NULL, NULL, TL_REQUIRES_PROTO_TREE,
 127                                            NULL, NULL, hosts_draw);
 128         if (error_string) {
 129                 /* error, we failed to attach to the tap. clean up */
 130                 fprintf(stderr, "tshark: Couldn't register " TAP_NAME " tap: %s\n",
 131                         error_string);
 132                 wmem_free(NULL, error_string);
 133                 exit(1);
 134         }
 135 }
 136
 137 static stat_tap_ui hosts_ui = {
 138         REGISTER_STAT_GROUP_GENERIC,
 139         NULL,
 140         TAP_NAME,
 141         hosts_init,
 142         0,
 143         NULL
 144 };
 145
 146 void
 147 register_tap_listener_hosts(void)
 148 {
 149         register_stat_tap_ui(&hosts_ui, NULL);
 150 }
 151
 152
 153 /*
 154  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 155  *
 156  * Local variables:
 157  * c-basic-offset: 8
 158  * tab-width: 8
 159  * indent-tabs-mode: t
 160  * End:
 161  *
 162  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 163  * :indentSize=8:tabSize=8:noTabs=false:
 164  */