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wireshark/ui/iface_lists.c

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/* iface_lists.c
* Code to manage the global list of interfaces and to update widgets/windows
* displaying items from those lists
*
* $Id$
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#ifdef HAVE_LIBPCAP
#include <string.h>
#include <glib.h>
#include <epan/prefs.h>
#include <epan/to_str.h>
#include "../capture_ui_utils.h"
#include "ui/capture_globals.h"
#include "ui/iface_lists.h"
/*
* Used when sorting an interface list into alphabetical order by
* their friendly names.
*/
gint
if_list_comparator_alph(const void *first_arg, const void *second_arg)
{
const if_info_t *first = (const if_info_t *)first_arg, *second = (const if_info_t *)second_arg;
if (first != NULL && first->friendly_name != NULL &&
second != NULL && second->friendly_name != NULL) {
return g_ascii_strcasecmp(first->friendly_name, second->friendly_name);
} else {
return 0;
}
}
/*
* Fetch the list of local interfaces with capture_interface_list()
* and set the list of "all interfaces" in *capture_opts to include
* those interfaces.
*/
void
scan_local_interfaces(void)
{
GList *if_entry, *lt_entry, *if_list;
if_info_t *if_info, *temp;
char *if_string;
gchar *descr;
if_capabilities_t *caps=NULL;
gint linktype_count;
gboolean monitor_mode;
GSList *curr_addr;
int ips = 0, i, err;
guint count = 0, j;
if_addr_t *addr, *temp_addr;
link_row *link = NULL;
data_link_info_t *data_link_info;
interface_t device;
GString *ip_str;
interface_options interface_opts;
gboolean found = FALSE;
if (global_capture_opts.all_ifaces->len > 0) {
for (i = (int)global_capture_opts.all_ifaces->len-1; i >= 0; i--) {
device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
if (device.local && device.type != IF_PIPE && device.type != IF_STDIN) {
global_capture_opts.all_ifaces = g_array_remove_index(global_capture_opts.all_ifaces, i);
}
}
}
/* Scan through the list and build a list of strings to display. */
if_list = capture_interface_list(&err, NULL);
count = 0;
for (if_entry = if_list; if_entry != NULL; if_entry = g_list_next(if_entry)) {
if_info = (if_info_t *)if_entry->data;
ip_str = g_string_new("");
ips = 0;
if (strstr(if_info->name, "rpcap:")) {
continue;
}
device.name = g_strdup(if_info->name);
if (if_info->friendly_name != NULL) {
device.friendly_name = g_strdup(if_info->friendly_name);
} else {
device.friendly_name = NULL;
}
device.hidden = FALSE;
device.locked = FALSE;
temp = (if_info_t *)g_malloc0(sizeof(if_info_t));
temp->name = g_strdup(if_info->name);
temp->friendly_name = g_strdup(if_info->friendly_name);
temp->vendor_description = g_strdup(if_info->vendor_description);
temp->loopback = if_info->loopback;
/* Is this interface hidden and, if so, should we include it anyway? */
/* Do we have a user-supplied description? */
descr = capture_dev_user_descr_find(if_info->name);
if (descr != NULL) {
/* Yes, we have a user-supplied description; use it. */
if_string = g_strdup_printf("%s: %s", descr, if_info->name);
g_free(descr);
} else {
/* No, we don't have a user-supplied description; did we get
one from the OS or libpcap? */
if (if_info->friendly_name != NULL) {
/* We have a friendly name from the OS, use it */
#ifdef _WIN32
/*
* On Windows, if we have a friendly name, just show it,
* don't show the name, as that's a string made out of
* the device GUID, and not at all friendly.
*/
if_string = g_strdup_printf("%s", if_info->friendly_name);
#else
/*
* On UN*X, if we have a friendly name, show it along
* with the interface name; the interface name is short
* and somewhat friendly, and many UN*X users are used
* to interface names, so we should show it.
*/
if_string = g_strdup_printf("%s: %s", if_info->friendly_name, if_info->name);
#endif
} else if (if_info->vendor_description != NULL) {
/* We have a device description from libpcap - use it. */
if_string = g_strdup_printf("%s: %s", if_info->vendor_description, if_info->name);
} else {
/* No. */
if_string = g_strdup(if_info->name);
}
}
device.display_name = if_string;
device.selected = FALSE;
if (prefs_is_capture_device_hidden(if_info->name)) {
device.hidden = TRUE;
}
device.type = if_info->type;
monitor_mode = prefs_capture_device_monitor_mode(if_info->name);
caps = capture_get_if_capabilities(if_info->name, monitor_mode, NULL);
for (; (curr_addr = g_slist_nth(if_info->addrs, ips)) != NULL; ips++) {
temp_addr = (if_addr_t *)g_malloc0(sizeof(if_addr_t));
if (ips != 0) {
g_string_append(ip_str, "\n");
}
addr = (if_addr_t *)curr_addr->data;
if (addr) {
temp_addr->ifat_type = addr->ifat_type;
switch (addr->ifat_type) {
case IF_AT_IPv4:
temp_addr->addr.ip4_addr = addr->addr.ip4_addr;
g_string_append(ip_str, ip_to_str((guint8 *)&addr->addr.ip4_addr));
break;
case IF_AT_IPv6:
memcpy(temp_addr->addr.ip6_addr, addr->addr.ip6_addr, sizeof(addr->addr));
g_string_append(ip_str, ip6_to_str((struct e_in6_addr *)&addr->addr.ip6_addr));
break;
default:
/* In case we add non-IP addresses */
break;
}
} else {
g_free(temp_addr);
temp_addr = NULL;
}
if (temp_addr) {
temp->addrs = g_slist_append(temp->addrs, temp_addr);
}
}
#ifdef HAVE_PCAP_REMOTE
device.local = TRUE;
device.remote_opts.src_type = CAPTURE_IFLOCAL;
device.remote_opts.remote_host_opts.remote_host = g_strdup(global_capture_opts.default_options.remote_host);
device.remote_opts.remote_host_opts.remote_port = g_strdup(global_capture_opts.default_options.remote_port);
device.remote_opts.remote_host_opts.auth_type = global_capture_opts.default_options.auth_type;
device.remote_opts.remote_host_opts.auth_username = g_strdup(global_capture_opts.default_options.auth_username);
device.remote_opts.remote_host_opts.auth_password = g_strdup(global_capture_opts.default_options.auth_password);
device.remote_opts.remote_host_opts.datatx_udp = global_capture_opts.default_options.datatx_udp;
device.remote_opts.remote_host_opts.nocap_rpcap = global_capture_opts.default_options.nocap_rpcap;
device.remote_opts.remote_host_opts.nocap_local = global_capture_opts.default_options.nocap_local;
#endif
#ifdef HAVE_PCAP_SETSAMPLING
device.remote_opts.sampling_method = global_capture_opts.default_options.sampling_method;
device.remote_opts.sampling_param = global_capture_opts.default_options.sampling_param;
#endif
linktype_count = 0;
device.links = NULL;
if (caps != NULL) {
#if defined(HAVE_PCAP_CREATE)
device.monitor_mode_enabled = monitor_mode;
device.monitor_mode_supported = caps->can_set_rfmon;
#endif
for (lt_entry = caps->data_link_types; lt_entry != NULL; lt_entry = g_list_next(lt_entry)) {
data_link_info = (data_link_info_t *)lt_entry->data;
if (linktype_count == 0) {
device.active_dlt = data_link_info->dlt;
}
link = (link_row *)g_malloc(sizeof(link_row));
if (data_link_info->description != NULL) {
link->dlt = data_link_info->dlt;
link->name = g_strdup_printf("%s", data_link_info->description);
} else {
link->dlt = -1;
link->name = g_strdup_printf("%s (not supported)", data_link_info->name);
}
device.links = g_list_append(device.links, link);
linktype_count++;
}
} else {
#if defined(HAVE_PCAP_CREATE)
device.monitor_mode_enabled = FALSE;
device.monitor_mode_supported = FALSE;
#endif
device.active_dlt = -1;
}
device.addresses = g_strdup(ip_str->str);
device.no_addresses = ips;
device.local = TRUE;
device.if_info = *temp;
device.last_packets = 0;
if ((device.pmode = capture_dev_user_pmode_find(if_info->name)) == -1) {
device.pmode = global_capture_opts.default_options.promisc_mode;
}
if ((device.has_snaplen = capture_dev_user_hassnap_find(if_info->name)) == -1) {
device.has_snaplen = global_capture_opts.default_options.has_snaplen;
}
if (capture_dev_user_snaplen_find(if_info->name) == -1) {
device.snaplen = global_capture_opts.default_options.snaplen;
} else {
device.snaplen = (guint)capture_dev_user_snaplen_find(if_info->name);
}
device.cfilter = g_strdup(global_capture_opts.default_options.cfilter);
#if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
if ((device.buffer = capture_dev_user_buffersize_find(if_info->name)) == -1) {
device.buffer = global_capture_opts.default_options.buffer_size;
}
#endif
if (global_capture_opts.ifaces->len > 0) {
for (j = 0; j < global_capture_opts.ifaces->len; j++) {
interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, j);
if (strcmp(interface_opts.name, device.name) == 0) {
#if defined(HAVE_PCAP_CREATE)
device.buffer = interface_opts.buffer_size;
device.monitor_mode_enabled = interface_opts.monitor_mode;
#endif
device.pmode = interface_opts.promisc_mode;
device.has_snaplen = interface_opts.has_snaplen;
device.snaplen = interface_opts.snaplen;
device.cfilter = g_strdup(interface_opts.cfilter);
if (interface_opts.linktype != -1) {
device.active_dlt = interface_opts.linktype;
}
device.selected = TRUE;
global_capture_opts.num_selected++;
break;
}
}
}
if (global_capture_opts.all_ifaces->len <= count) {
g_array_append_val(global_capture_opts.all_ifaces, device);
count = global_capture_opts.all_ifaces->len;
} else {
g_array_insert_val(global_capture_opts.all_ifaces, count, device);
}
if (caps != NULL) {
free_if_capabilities(caps);
}
g_string_free(ip_str, TRUE);
count++;
}
free_interface_list(if_list);
/* see whether there are additional interfaces in ifaces */
for (j = 0; j < global_capture_opts.ifaces->len; j++) {
interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, j);
found = FALSE;
for (i = 0; i < (int)global_capture_opts.all_ifaces->len; i++) {
device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
if (strcmp(device.name, interface_opts.name) == 0) {
found = TRUE;
break;
}
}
if (!found) { /* new interface, maybe a pipe */
device.name = g_strdup(interface_opts.name);
device.display_name = g_strdup_printf("%s: %s", device.name, interface_opts.descr);
device.hidden = FALSE;
device.selected = TRUE;
device.type = IF_PIPE;
#if defined(_WIN32) || defined(HAVE_PCAP_CREATE)
device.buffer = interface_opts.buffer_size;
#endif
#if defined(HAVE_PCAP_CREATE)
device.monitor_mode_enabled = interface_opts.monitor_mode;
device.monitor_mode_supported = FALSE;
#endif
device.pmode = interface_opts.promisc_mode;
device.has_snaplen = interface_opts.has_snaplen;
device.snaplen = interface_opts.snaplen;
device.cfilter = g_strdup(interface_opts.cfilter);
device.active_dlt = interface_opts.linktype;
device.addresses = NULL;
device.no_addresses = 0;
device.last_packets = 0;
device.links = NULL;
device.local = TRUE;
device.locked = FALSE;
device.if_info.name = g_strdup(interface_opts.name);
device.if_info.friendly_name = NULL;
device.if_info.vendor_description = g_strdup(interface_opts.descr);
device.if_info.addrs = NULL;
device.if_info.loopback = FALSE;
g_array_append_val(global_capture_opts.all_ifaces, device);
global_capture_opts.num_selected++;
}
}
}
/*
* Get the global interface list. Generate it if we haven't
* done so already.
*/
void
fill_in_local_interfaces(void)
{
static gboolean initialized = FALSE;
if (!initialized) {
scan_local_interfaces();
initialized = TRUE;
}
}
void
hide_interface(gchar* new_hide)
{
gchar *tok;
guint i;
interface_t device;
gboolean found = FALSE;
GList *hidden_devices = NULL, *entry;
if (new_hide != NULL) {
for (tok = strtok (new_hide, ","); tok; tok = strtok(NULL, ",")) {
hidden_devices = g_list_append(hidden_devices, tok);
}
}
for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
found = FALSE;
for (entry = hidden_devices; entry != NULL; entry = g_list_next(entry)) {
if (strcmp((char *)entry->data, device.name)==0) {
device.hidden = TRUE;
if (device.selected) {
device.selected = FALSE;
global_capture_opts.num_selected--;
}
found = TRUE;
break;
}
}
if (!found) {
device.hidden = FALSE;
}
global_capture_opts.all_ifaces = g_array_remove_index(global_capture_opts.all_ifaces, i);
g_array_insert_val(global_capture_opts.all_ifaces, i, device);
}
}
#endif /* HAVE_LIBPCAP */
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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