forked from osmocom/wireshark
![Michael Tüxen](/assets/img/avatar_default.png)
test scripts are passed. Use a global list containing all interfaces and only change properties of the entries when changes are made in the GUI. Do not misuse the list of interfaces specified on the command line anymore. This patch does not provide any new functionality, it just provides the base for future extensions like removing remote interface, mulitple airpcap devices and multiple pipes. This patch was provided by Irene Ruengeler. svn path=/trunk/; revision=40715
424 lines
12 KiB
C
424 lines
12 KiB
C
/* capture_ui_utils.c
|
|
* Utilities for capture user interfaces
|
|
*
|
|
* $Id$
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <glib.h>
|
|
|
|
#include "epan/prefs.h"
|
|
#include "epan/ex-opt.h"
|
|
#include "capture_ifinfo.h"
|
|
#include "capture_ui_utils.h"
|
|
#include "ui/simple_dialog.h"
|
|
#include "wiretap/wtap.h"
|
|
#include "epan/to_str.h"
|
|
|
|
/*
|
|
* Find user-specified capture device description that matches interface
|
|
* name, if any.
|
|
*/
|
|
char *
|
|
capture_dev_user_descr_find(const gchar *if_name)
|
|
{
|
|
char *p;
|
|
char *p2 = NULL;
|
|
char *descr = NULL;
|
|
int lp = 0;
|
|
int ct = 0;
|
|
|
|
if (prefs.capture_devices_descr == NULL) {
|
|
/* There are no descriptions. */
|
|
return NULL;
|
|
}
|
|
|
|
if ((p = strstr(prefs.capture_devices_descr, if_name)) == NULL) {
|
|
/* There are, but there isn't one for this interface. */
|
|
return NULL;
|
|
}
|
|
|
|
while (*p != '\0') {
|
|
/* error: ran into next interface description */
|
|
if (*p == ',')
|
|
return NULL;
|
|
/* found left parenthesis, start of description */
|
|
else if (*p == '(') {
|
|
ct = 0;
|
|
lp++;
|
|
/* skip over left parenthesis */
|
|
p++;
|
|
/* save pointer to beginning of description */
|
|
p2 = p;
|
|
continue;
|
|
}
|
|
else if (*p == ')') {
|
|
/* end of description */
|
|
break;
|
|
}
|
|
else {
|
|
p++;
|
|
ct++;
|
|
}
|
|
}
|
|
|
|
if ((lp == 1) && (ct > 0) && (p2 != NULL)) {
|
|
/* Allocate enough space to return the string,
|
|
which runs from p2 to p, plus a terminating
|
|
'\0'. */
|
|
descr = g_malloc(p - p2 + 1);
|
|
memcpy(descr, p2, p - p2);
|
|
descr[p - p2] = '\0';
|
|
return descr;
|
|
}
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
gint
|
|
capture_dev_user_linktype_find(const gchar *if_name)
|
|
{
|
|
gchar *p, *next;
|
|
long linktype;
|
|
|
|
if (prefs.capture_devices_linktypes == NULL) {
|
|
/* There are no link-layer header types */
|
|
return -1;
|
|
}
|
|
|
|
if ((p = strstr(prefs.capture_devices_linktypes, if_name)) == NULL) {
|
|
/* There are, but there isn't one for this interface. */
|
|
return -1;
|
|
}
|
|
|
|
p += strlen(if_name) + 1;
|
|
linktype = strtol(p, &next, 10);
|
|
if (next == p || *next != ')' || linktype < 0) {
|
|
/* Syntax error */
|
|
return -1;
|
|
}
|
|
if (linktype > G_MAXINT) {
|
|
/* Value doesn't fit in a gint */
|
|
return -1;
|
|
}
|
|
|
|
return (gint)linktype;
|
|
}
|
|
|
|
/*
|
|
* Return as descriptive a name for an interface as we can get.
|
|
* If the user has specified a comment, use that. Otherwise,
|
|
* if capture_interface_list() supplies a description, use that,
|
|
* otherwise use the interface name.
|
|
*
|
|
* The result must be g_free()'d when you're done with it.
|
|
*
|
|
* Note: given that this calls capture_interface_list(), which attempts to
|
|
* open all adapters it finds in order to check whether they can be
|
|
* captured on, this is an expensive routine to call, so don't call it
|
|
* frequently.
|
|
*/
|
|
char *
|
|
get_interface_descriptive_name(const char *if_name)
|
|
{
|
|
char *descr;
|
|
GList *if_list;
|
|
GList *if_entry;
|
|
if_info_t *if_info;
|
|
int err;
|
|
|
|
/* Do we have a user-supplied description? */
|
|
descr = capture_dev_user_descr_find(if_name);
|
|
if (descr != NULL) {
|
|
/* Yes - make a copy of that. */
|
|
descr = g_strdup(descr);
|
|
} else if (strcmp(if_name, "-") == 0) {
|
|
/*
|
|
* Strictly speaking, -X (extension) options are for modules, e.g. Lua
|
|
* and using one here stretches that definition. However, this doesn't
|
|
* waste a single-letter option on something that might be rarely used
|
|
* and is backward-compatible to 1.0.
|
|
*/
|
|
descr = g_strdup(ex_opt_get_nth("stdin_descr", 0));
|
|
if (!descr) {
|
|
descr = g_strdup("Standard input");
|
|
}
|
|
} else {
|
|
/* No, we don't have a user-supplied description; did we get
|
|
one from the OS or libpcap? */
|
|
descr = NULL;
|
|
if_list = capture_interface_list(&err, NULL);
|
|
if (if_list != NULL) {
|
|
if_entry = if_list;
|
|
do {
|
|
if_info = if_entry->data;
|
|
if (strcmp(if_info->name, if_name) == 0) {
|
|
if (if_info->description != NULL) {
|
|
/* Return a copy of that - when we free the interface
|
|
list, that'll also free up the strings to which
|
|
it refers. */
|
|
descr = g_strdup(if_info->description);
|
|
}
|
|
break;
|
|
}
|
|
} while ((if_entry = g_list_next(if_entry)) != NULL);
|
|
}
|
|
free_interface_list(if_list);
|
|
|
|
if (descr == NULL) {
|
|
/* The interface name is all we have, so just return a copy of that. */
|
|
descr = g_strdup(if_name);
|
|
}
|
|
}
|
|
|
|
return descr;
|
|
}
|
|
|
|
|
|
/* search interface info by interface name */
|
|
static if_info_t *
|
|
search_info(GList *if_list, gchar *if_name)
|
|
{
|
|
GList *if_entry;
|
|
if_info_t *if_info;
|
|
|
|
|
|
for (if_entry = if_list; if_entry != NULL; if_entry = g_list_next(if_entry)) {
|
|
if_info = if_entry->data;
|
|
|
|
if(strcmp(if_name, if_info->name) == 0) {
|
|
return if_info;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* build the string to display in the combo box for the given interface */
|
|
char *
|
|
build_capture_combo_name(GList *if_list, gchar *if_name)
|
|
{
|
|
gchar *descr;
|
|
char *if_string;
|
|
if_info_t *if_info;
|
|
|
|
/* Do we have a user-supplied description? */
|
|
descr = capture_dev_user_descr_find(if_name);
|
|
if (descr != NULL) {
|
|
/* Yes, we have a user-supplied description; use it. */
|
|
if_string = g_strdup_printf("%s: %s", descr, if_name);
|
|
g_free(descr);
|
|
} else {
|
|
/* No, we don't have a user-supplied description; did we get
|
|
one from the OS or libpcap? */
|
|
if_info = search_info(if_list, if_name);
|
|
if (if_info != NULL && if_info->description != NULL) {
|
|
/* Yes - use it. */
|
|
if_string = g_strdup_printf("%s: %s", if_info->description,
|
|
if_info->name);
|
|
} else {
|
|
/* No. */
|
|
if_string = g_strdup(if_name);
|
|
}
|
|
}
|
|
|
|
return if_string;
|
|
}
|
|
|
|
|
|
GList *
|
|
build_capture_combo_list(GList *if_list, gboolean do_hide)
|
|
{
|
|
GList *combo_list;
|
|
GList *if_entry;
|
|
if_info_t *if_info;
|
|
char *if_string;
|
|
gchar *descr;
|
|
|
|
combo_list = NULL;
|
|
if (if_list != NULL) {
|
|
/* Scan through the list and build a list of strings to display. */
|
|
for (if_entry = if_list; if_entry != NULL;
|
|
if_entry = g_list_next(if_entry)) {
|
|
if_info = if_entry->data;
|
|
|
|
/* Is this interface hidden and, if so, should we include it
|
|
anyway? */
|
|
if (!prefs_is_capture_device_hidden(if_info->name) || !do_hide) {
|
|
/* It's not hidden, or it is but we should include it in the list. */
|
|
|
|
/* 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->description != NULL) {
|
|
/* Yes - use it. */
|
|
if_string = g_strdup_printf("%s: %s", if_info->description,
|
|
if_info->name);
|
|
} else {
|
|
/* No. */
|
|
if_string = g_strdup(if_info->name);
|
|
}
|
|
}
|
|
combo_list = g_list_append(combo_list, if_string);
|
|
}
|
|
}/*for*/
|
|
}
|
|
return combo_list;
|
|
}
|
|
|
|
static void
|
|
free_if_string(gpointer data, gpointer user_data _U_)
|
|
{
|
|
g_free(data);
|
|
}
|
|
|
|
void
|
|
free_capture_combo_list(GList *combo_list)
|
|
{
|
|
if (combo_list != NULL) {
|
|
g_list_foreach(combo_list, free_if_string, NULL);
|
|
g_list_free(combo_list);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Given text that contains an interface name possibly prefixed by an
|
|
* interface description, extract the interface name.
|
|
*/
|
|
const char *
|
|
get_if_name(const char *if_text)
|
|
{
|
|
const char *if_name;
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* We cannot assume that the interface name doesn't contain a space;
|
|
* some names on Windows OT do.
|
|
*
|
|
* We also can't assume it begins with "\Device\", either, as, on
|
|
* Windows OT, WinPcap doesn't put "\Device\" in front of the name.
|
|
*
|
|
* As I remember, we can't assume that the interface description
|
|
* doesn't contain a colon, either; I think some do.
|
|
*
|
|
* We can probably assume that the interface *name* doesn't contain
|
|
* a colon, however; if any interface name does contain a colon on
|
|
* Windows, it'll be time to just get rid of the damn interface
|
|
* descriptions in the drop-down list, have just the names in the
|
|
* drop-down list, and have a "Browse..." button to browse for interfaces,
|
|
* with names, descriptions, IP addresses, blah blah blah available when
|
|
* possible.
|
|
*
|
|
* So we search backwards for a colon. If we don't find it, just
|
|
* return the entire string; otherwise, skip the colon and any blanks
|
|
* after it, and return that string.
|
|
*/
|
|
if_name = if_text + strlen(if_text);
|
|
for (;;) {
|
|
if (if_name == if_text) {
|
|
/* We're at the beginning of the string; return it. */
|
|
break;
|
|
}
|
|
if_name--;
|
|
if (*if_name == ':') {
|
|
/*
|
|
* We've found a colon.
|
|
* Unfortunately, a colon is used in the string "rpcap://",
|
|
* which is used in case of a remote capture.
|
|
* So we'll check to make sure the colon isn't followed by "//";
|
|
* it'll be followed by a blank if it separates the description
|
|
* and the interface name. (We don't wire in "rpcap", in case we
|
|
* support other protocols in the same syntax.)
|
|
* Unfortunately, another colon can be used in "rpcap://host:port/"
|
|
* before port. Check if colon is followed by digit.
|
|
*/
|
|
if ((strncmp(if_name, "://", 3) != 0) && !isdigit(if_name[1])) {
|
|
/*
|
|
* OK, we've found a colon followed neither by "//" nor by digit.
|
|
* Skip blanks following it.
|
|
*/
|
|
if_name++;
|
|
while (*if_name == ' ')
|
|
if_name++;
|
|
break;
|
|
}
|
|
}
|
|
/* Keep looking for a colon not followed by "//". */
|
|
}
|
|
#else
|
|
/*
|
|
* There's a space between the interface description and name, and
|
|
* the interface name shouldn't have a space in it (it doesn't, on
|
|
* UNIX systems); look backwards in the string for a space.
|
|
*
|
|
* (An interface name might, however, contain a colon in it, which
|
|
* is why we don't use the colon search on UNIX.)
|
|
*/
|
|
if_name = strrchr(if_text, ' ');
|
|
if (if_name == NULL) {
|
|
if_name = if_text;
|
|
} else {
|
|
if_name++;
|
|
}
|
|
#endif
|
|
return if_name;
|
|
}
|
|
|
|
/* Return interface_opts->descr (after setting it if it is not set)
|
|
* This is necessary because capture_opts.c can't set descr (at least
|
|
* not without adding significant dependencies there).
|
|
*/
|
|
const char *
|
|
get_iface_description_for_interface(capture_options *capture_opts, guint i)
|
|
{
|
|
interface_options interface_opts;
|
|
|
|
if (i < capture_opts->ifaces->len) {
|
|
interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
|
|
if (!interface_opts.descr && interface_opts.name) {
|
|
interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
|
|
capture_opts->ifaces = g_array_remove_index(capture_opts->ifaces, i);
|
|
g_array_insert_val(capture_opts->ifaces, i, interface_opts);
|
|
}
|
|
return (interface_opts.descr);
|
|
} else {
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_LIBPCAP */
|