2 * Routines for getting interface information from dumpcap
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 #ifdef HAVE_ARPA_INET_H
35 #include <arpa/inet.h>
38 #ifdef HAVE_SYS_SOCKET_H
39 #include <sys/socket.h> /* needed to define AF_ values on UNIX */
42 #ifdef HAVE_WINSOCK2_H
43 #include <winsock2.h> /* needed to define AF_ values on Windows */
46 #ifdef NEED_INET_V6DEFS_H
47 # include "inet_v6defs.h"
52 #include "capture_opts.h"
53 #include "capture_sync.h"
56 #include "capture_ifinfo.h"
59 * Fetch the interface list from a child process (dumpcap).
61 * @return A GList containing if_info_t structs if successful, NULL (with err and possibly err_str set) otherwise.
65 /* XXX - We parse simple text output to get our interface list. Should
66 * we use "real" data serialization instead, e.g. via XML? */
68 capture_interface_list(int *err, char **err_str)
71 GList *if_list = NULL;
74 gchar **raw_list, **if_parts, **addr_parts;
79 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List ...");
81 /* Try to get our interface list */
82 ret = sync_interface_list_open(&msg);
84 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List failed!");
90 *err = CANT_RUN_DUMPCAP;
96 raw_list = g_strsplit(msg, "\r\n", 0);
98 raw_list = g_strsplit(msg, "\n", 0);
102 for (i = 0; raw_list[i] != NULL; i++) {
103 if_parts = g_strsplit(raw_list[i], "\t", 4);
104 if (if_parts[0] == NULL || if_parts[1] == NULL || if_parts[2] == NULL ||
105 if_parts[3] == NULL) {
106 g_strfreev(if_parts);
110 /* Number followed by the name, e.g "1. eth0" */
111 name = strchr(if_parts[0], ' ');
115 g_strfreev(if_parts);
119 if_info = g_malloc0(sizeof(if_info_t));
120 if_info->name = g_strdup(name);
121 if (strlen(if_parts[1]) > 0)
122 if_info->description = g_strdup(if_parts[1]);
123 addr_parts = g_strsplit(if_parts[2], ",", 0);
124 for (j = 0; addr_parts[j] != NULL; j++) {
125 if_addr = g_malloc0(sizeof(if_addr_t));
126 if (inet_pton(AF_INET, addr_parts[j], &if_addr->addr.ip4_addr)) {
127 if_addr->ifat_type = IF_AT_IPv4;
128 } else if (inet_pton(AF_INET6, addr_parts[j],
129 &if_addr->addr.ip6_addr)) {
130 if_addr->ifat_type = IF_AT_IPv6;
136 if_info->addrs = g_slist_append(if_info->addrs, if_addr);
139 if (strcmp(if_parts[3], "loopback") == 0)
140 if_info->loopback = TRUE;
141 g_strfreev(if_parts);
142 g_strfreev(addr_parts);
143 if_list = g_list_append(if_list, if_info);
145 g_strfreev(raw_list);
147 /* Check to see if we built a list */
148 if (if_list == NULL) {
149 *err = NO_INTERFACES_FOUND;
151 *err_str = g_strdup("No interfaces found");
156 /* XXX - We parse simple text output to get our interface list. Should
157 * we use "real" data serialization instead, e.g. via XML? */
159 capture_pcap_linktype_list(const gchar *ifname, char **err_str)
161 GList *linktype_list = NULL;
164 gchar **raw_list, **lt_parts;
165 data_link_info_t *data_link_info;
167 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Linktype List ...");
169 /* Try to get our interface list */
170 err = sync_linktype_list_open(ifname, &msg);
172 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Linktype List failed!");
181 /* Split our lines */
183 raw_list = g_strsplit(msg, "\r\n", 0);
185 raw_list = g_strsplit(msg, "\n", 0);
189 for (i = 0; raw_list[i] != NULL; i++) {
190 /* ...and what if the interface name has a tab in it, Mr. Clever Programmer? */
191 lt_parts = g_strsplit(raw_list[i], "\t", 3);
192 if (lt_parts[0] == NULL || lt_parts[1] == NULL || lt_parts[2] == NULL) {
193 g_strfreev(lt_parts);
197 data_link_info = g_malloc(sizeof (data_link_info_t));
198 data_link_info->dlt = (int) strtol(lt_parts[0], NULL, 10);
199 data_link_info->name = g_strdup(lt_parts[1]);
200 if (strcmp(lt_parts[2], "(not supported)") != 0)
201 data_link_info->description = g_strdup(lt_parts[2]);
203 data_link_info->description = NULL;
205 linktype_list = g_list_append(linktype_list, data_link_info);
207 g_strfreev(raw_list);
209 /* Check to see if we built a list */
210 if (linktype_list == NULL) {
214 return linktype_list;
217 #endif /* HAVE_LIBPCAP */