3 * Routines for extcap external capture
4 * Copyright 2013, Mike Ryan <mikeryan@lacklustre.net>
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * SPDX-License-Identifier: GPL-2.0-or-later
24 /* Include for unlink */
28 #include <sys/types.h>
29 #ifdef HAVE_SYS_WAIT_H
36 #include <epan/prefs.h>
38 #include "ui/iface_toolbar.h"
40 #include <wsutil/file_util.h>
41 #include <wsutil/filesystem.h>
42 #include <wsutil/ws_pipe.h>
43 #include <wsutil/tempfile.h>
45 #include "capture_opts.h"
48 #include "extcap_parser.h"
50 #include "version_info.h"
53 static HANDLE pipe_h = INVALID_HANDLE_VALUE;
56 static void extcap_child_watch_cb(GPid pid, gint status, gpointer user_data);
58 /* internal container, for all the extcap executables that have been found.
59 * Will be resetted if extcap_clear_interfaces() is being explicitly called
60 * and is being used for printing information about all extcap interfaces found,
61 * as well as storing all sub-interfaces
63 static GHashTable * _loaded_interfaces = NULL;
65 /* Internal container, which maps each ifname to the tool providing it, for faster
66 * lookup. The key and string value are owned by this table.
68 static GHashTable * _tool_for_ifname = NULL;
70 /* internal container, for all the extcap executables that have been found
71 * and that provides a toolbar with controls to be added to a Interface Toolbar
73 static GHashTable *_toolbars = NULL;
75 /* internal container, to map preference names to pointers that hold preference
76 * values. These ensure that preferences can survive extcap if garbage
77 * collection, and does not lead to dangling pointers in the prefs subsystem.
79 static GHashTable *extcap_prefs_dynamic_vals = NULL;
81 typedef struct _extcap_callback_info_t
88 } extcap_callback_info_t;
90 /* Callback definition for extcap_foreach */
91 typedef gboolean(*extcap_cb_t)(extcap_callback_info_t info_structure);
93 static void extcap_load_interface_list(void);
96 extcap_loaded_interfaces(void)
98 if (prefs.capture_no_extcap)
101 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
102 extcap_load_interface_list();
104 return _loaded_interfaces;
108 extcap_clear_interfaces(void)
110 if ( _loaded_interfaces )
111 g_hash_table_destroy(_loaded_interfaces);
112 _loaded_interfaces = NULL;
114 if ( _tool_for_ifname )
115 g_hash_table_destroy(_tool_for_ifname);
116 _tool_for_ifname = NULL;
119 guint extcap_count(void)
121 const char *dirname = get_extcap_dir();
127 if ((dir = g_dir_open(dirname, 0, NULL)) != NULL)
129 GString *extcap_path = NULL;
132 extcap_path = g_string_new("");
133 while ((file = g_dir_read_name(dir)) != NULL)
135 /* full path to extcap binary */
136 g_string_printf(extcap_path, "%s" G_DIR_SEPARATOR_S "%s", dirname, file);
137 /* treat anything executable as an extcap binary */
138 if (g_file_test(extcap_path->str, G_FILE_TEST_IS_REGULAR) &&
139 g_file_test(extcap_path->str, G_FILE_TEST_IS_EXECUTABLE))
146 g_string_free(extcap_path, TRUE);
152 extcap_if_exists(const gchar *ifname)
154 if (!ifname || !_tool_for_ifname)
159 if (g_hash_table_lookup(_tool_for_ifname, ifname))
167 static extcap_interface *
168 extcap_find_interface_for_ifname(const gchar *ifname)
170 extcap_interface * result = NULL;
172 if ( !ifname || ! _tool_for_ifname || ! _loaded_interfaces )
175 gchar * extcap_util = (gchar *)g_hash_table_lookup(_tool_for_ifname, ifname);
179 extcap_info * element = (extcap_info *)g_hash_table_lookup(_loaded_interfaces, extcap_util);
183 GList * walker = element->interfaces;
184 while ( walker && walker->data && ! result )
186 extcap_interface * interface = (extcap_interface *)walker->data;
187 if ( g_strcmp0(interface->call, ifname) == 0 )
193 walker = g_list_next ( walker );
200 extcap_free_toolbar_value(iface_toolbar_value *value)
207 g_free(value->value);
208 g_free(value->display);
213 extcap_free_toolbar_control(iface_toolbar_control *control)
220 g_free(control->display);
221 g_free(control->validation);
222 g_free(control->tooltip);
223 if (control->ctrl_type == INTERFACE_TYPE_STRING) {
224 g_free(control->default_value.string);
226 g_list_free_full(control->values, (GDestroyNotify)extcap_free_toolbar_value);
231 extcap_free_toolbar(gpointer data)
238 iface_toolbar *toolbar = (iface_toolbar *)data;
240 g_free(toolbar->menu_title);
241 g_free(toolbar->help);
242 g_list_free_full(toolbar->ifnames, g_free);
243 g_list_free_full(toolbar->controls, (GDestroyNotify)extcap_free_toolbar_control);
248 extcap_if_exists_for_extcap(const gchar *ifname, const gchar *extcap)
250 extcap_interface *entry = extcap_find_interface_for_ifname(ifname);
252 if (entry && strcmp(entry->extcap_path, extcap) == 0)
261 extcap_if_executable(const gchar *ifname)
263 extcap_interface *interface = extcap_find_interface_for_ifname(ifname);
264 return interface != NULL ? interface->extcap_path : NULL;
268 extcap_iface_toolbar_add(const gchar *extcap, iface_toolbar *toolbar_entry)
272 if (!extcap || !toolbar_entry)
277 toolname = g_path_get_basename(extcap);
279 if (!g_hash_table_lookup(_toolbars, toolname))
281 g_hash_table_insert(_toolbars, g_strdup(toolname), toolbar_entry);
288 extcap_convert_arguments_to_array(GList * arguments)
290 gchar ** result = NULL;
293 GList * walker = g_list_first(arguments);
296 result = (gchar **) g_malloc0(sizeof(gchar *) * (g_list_length(arguments)));
300 result[cnt] = g_strdup((const gchar *)walker->data);
301 walker = g_list_next(walker);
308 static void extcap_free_array(gchar ** args, int argc)
312 for ( cnt = 0; cnt < argc; cnt++ )
317 /* Note: args does not need to be NULL-terminated. */
318 static gboolean extcap_foreach(GList * arguments,
319 extcap_cb_t cb, extcap_callback_info_t cb_info, GList * fallback_arguments)
323 const char *dirname = get_extcap_dir();
327 if (arguments && (dir = g_dir_open(dirname, 0, NULL)) != NULL)
329 GString *extcap_path = NULL;
331 gchar ** args = extcap_convert_arguments_to_array(arguments);
332 int cnt = g_list_length(arguments);
334 extcap_path = g_string_new("");
335 while (keep_going && (file = g_dir_read_name(dir)) != NULL)
337 gchar *command_output = NULL;
339 /* full path to extcap binary */
340 g_string_printf(extcap_path, "%s" G_DIR_SEPARATOR_S "%s", dirname, file);
341 /* treat anything executable as an extcap binary */
342 if (g_file_test(extcap_path->str, G_FILE_TEST_IS_REGULAR) &&
343 g_file_test(extcap_path->str, G_FILE_TEST_IS_EXECUTABLE))
345 if (extcap_if_exists(cb_info.ifname) && !extcap_if_exists_for_extcap(cb_info.ifname, extcap_path->str))
350 if (ws_pipe_spawn_sync((gchar *) dirname, extcap_path->str, cnt, args, &command_output))
352 cb_info.output = command_output;
353 cb_info.extcap = extcap_path->str;
355 keep_going = cb(cb_info);
357 else if ( fallback_arguments )
359 gchar ** fb_args = extcap_convert_arguments_to_array(fallback_arguments);
361 if (ws_pipe_spawn_sync((gchar *) dirname, extcap_path->str, g_list_length(fallback_arguments), fb_args, &command_output))
363 cb_info.output = command_output;
364 cb_info.extcap = extcap_path->str;
366 keep_going = cb(cb_info);
370 g_free(command_output);
374 extcap_free_array(args, cnt);
377 g_string_free(extcap_path, TRUE);
383 static void extcap_free_dlt(gpointer d, gpointer user_data _U_)
390 g_free(((extcap_dlt *)d)->name);
391 g_free(((extcap_dlt *)d)->display);
395 static void extcap_free_dlts(GList *dlts)
397 g_list_foreach(dlts, extcap_free_dlt, NULL);
401 static gboolean cb_dlt(extcap_callback_info_t cb_info)
403 GList *dlts = NULL, *temp = NULL;
405 if_capabilities_t *caps;
406 GList *linktype_list = NULL;
407 data_link_info_t *data_link_info;
408 extcap_dlt *dlt_item;
410 dlts = extcap_parse_dlts(cb_info.output);
413 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap pipe %s ", cb_info.extcap);
416 * Allocate the interface capabilities structure.
418 caps = (if_capabilities_t *) g_malloc(sizeof * caps);
419 caps->can_set_rfmon = FALSE;
420 caps->timestamp_types = NULL;
424 dlt_item = (extcap_dlt *)dlts->data;
427 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
428 " DLT %d name=\"%s\" display=\"%s\" ", dlt_item->number,
429 dlt_item->name, dlt_item->display);
431 data_link_info = g_new(data_link_info_t, 1);
432 data_link_info->dlt = dlt_item->number;
433 data_link_info->name = g_strdup(dlt_item->name);
434 data_link_info->description = g_strdup(dlt_item->display);
435 linktype_list = g_list_append(linktype_list, data_link_info);
438 dlts = g_list_next(dlts);
441 /* Check to see if we built a list */
442 if (linktype_list != NULL && cb_info.data != NULL)
444 caps->data_link_types = linktype_list;
445 *(if_capabilities_t **) cb_info.data = caps;
451 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " returned no DLTs");
452 *(cb_info.err_str) = g_strdup("Extcap returned no DLTs");
457 extcap_free_dlts(temp);
463 extcap_get_if_dlts(const gchar *ifname, char **err_str)
465 GList * arguments = NULL;
466 if_capabilities_t *caps = NULL;
473 if (extcap_if_exists(ifname))
475 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_LIST_DLTS));
476 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_INTERFACE));
477 arguments = g_list_append(arguments, g_strdup(ifname));
479 extcap_callback_info_t cb_info;
480 cb_info.data = ∩︀
481 cb_info.err_str = err_str;
482 cb_info.ifname = ifname;
484 extcap_foreach(arguments, cb_dlt, cb_info, NULL);
486 g_list_free_full(arguments, g_free);
492 static void extcap_free_interface(gpointer i)
495 extcap_interface *interface = (extcap_interface *)i;
502 g_free(interface->call);
503 g_free(interface->display);
504 g_free(interface->version);
505 g_free(interface->help);
506 g_free(interface->extcap_path);
510 static void extcap_free_interfaces(GList *interfaces)
512 if (interfaces == NULL)
517 g_list_free_full(interfaces, extcap_free_interface);
521 if_info_compare(gconstpointer a, gconstpointer b)
524 const if_info_t *if_a = (const if_info_t *)a;
525 const if_info_t *if_b = (const if_info_t *)b;
527 if ((comp = g_strcmp0(if_a->name, if_b->name)) == 0)
529 return g_strcmp0(if_a->friendly_name, if_b->friendly_name);
536 extcap_get_help_for_ifname(const char *ifname)
538 extcap_interface *interface = extcap_find_interface_for_ifname(ifname);
539 return interface != NULL ? interface->help : NULL;
543 append_extcap_interface_list(GList *list, char **err_str _U_)
545 GList *interface_list = NULL;
546 extcap_interface *data = NULL;
547 GList *ifutilkeys_head = NULL, *ifutilkeys = NULL;
549 if (prefs.capture_no_extcap)
552 /* Update the extcap interfaces and get a list of their if_infos */
553 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
554 extcap_load_interface_list();
556 ifutilkeys_head = g_hash_table_get_keys(_loaded_interfaces);
557 ifutilkeys = ifutilkeys_head;
558 while ( ifutilkeys && ifutilkeys->data )
560 extcap_info * extinfo =
561 (extcap_info *) g_hash_table_lookup(_loaded_interfaces, (gchar *)ifutilkeys->data);
562 GList * walker = extinfo->interfaces;
563 while ( walker && walker->data )
565 interface_list = g_list_append(interface_list, walker->data);
566 walker = g_list_next(walker);
569 ifutilkeys = g_list_next(ifutilkeys);
571 g_list_free(ifutilkeys_head);
574 interface_list = g_list_sort(interface_list, if_info_compare);
576 /* Append the interfaces in that list to the list we're handed. */
577 while (interface_list != NULL)
579 GList *entry = g_list_first(interface_list);
580 data = (extcap_interface *)entry->data;
581 interface_list = g_list_delete_link(interface_list, entry);
583 if_info_t * if_info = g_new0(if_info_t, 1);
584 if_info->name = g_strdup(data->call);
585 if_info->friendly_name = g_strdup(data->display);
587 if_info->type = IF_EXTCAP;
589 if_info->extcap = g_strdup(data->extcap_path);
591 list = g_list_append(list, if_info);
598 extcap_register_preferences_callback(gpointer key, gpointer value _U_, gpointer user_data _U_)
602 arguments = extcap_get_if_configuration((gchar *)key);
603 /* Memory for prefs are external to an interface, they are part of
604 * extcap core, so the parsed arguments can be freed. */
605 extcap_free_if_configuration(arguments, TRUE);
608 void extcap_register_preferences(void)
610 if (prefs.capture_no_extcap)
613 module_t *dev_module = prefs_find_module("extcap");
620 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
621 extcap_load_interface_list();
624 g_hash_table_foreach(_tool_for_ifname, extcap_register_preferences_callback, NULL);
628 * Releases the dynamic preference value pointers. Must not be called before
629 * prefs_cleanup since these pointers could still be in use.
631 void extcap_cleanup(void)
633 if (extcap_prefs_dynamic_vals)
634 g_hash_table_destroy(extcap_prefs_dynamic_vals);
636 if (_loaded_interfaces)
637 g_hash_table_destroy(_loaded_interfaces);
639 if (_tool_for_ifname)
640 g_hash_table_destroy(_tool_for_ifname);
644 * Obtains a pointer which can store a value for the given preference name.
645 * The preference name that can be passed to the prefs API is stored into
648 * Extcap interfaces (and their preferences) are dynamic, they can be created
649 * and destroyed at will. Thus their data structures are insufficient to pass to
650 * the preferences APIs which require pointers which are valid until the
651 * preferences are removed (at exit).
653 static gchar **extcap_prefs_dynamic_valptr(const char *name, char **pref_name)
656 if (!extcap_prefs_dynamic_vals)
658 /* Initialize table only as needed, most preferences are not dynamic */
659 extcap_prefs_dynamic_vals = g_hash_table_new_full(g_str_hash, g_str_equal,
662 if (!g_hash_table_lookup_extended(extcap_prefs_dynamic_vals, name,
663 (gpointer *)pref_name, (gpointer *)&valp))
665 /* New dynamic pref, allocate, initialize and store. */
666 valp = g_new0(gchar *, 1);
667 *pref_name = g_strdup(name);
668 g_hash_table_insert(extcap_prefs_dynamic_vals, *pref_name, valp);
673 void extcap_free_if_configuration(GList *list, gboolean free_args)
677 for (elem = g_list_first(list); elem; elem = elem->next)
679 if (elem->data != NULL)
681 sl = g_list_first((GList *)elem->data);
684 extcap_free_arg_list(sl);
696 extcap_pref_for_argument(const gchar *ifname, struct _extcap_arg *arg)
698 struct preference *pref = NULL;
700 GRegex *regex_name = g_regex_new("[-]+", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
701 GRegex *regex_ifname = g_regex_new("(?![a-zA-Z1-9_]).", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
702 if (regex_name && regex_ifname)
704 if (prefs_find_module("extcap"))
706 gchar *pref_name = g_regex_replace(regex_name, arg->call, strlen(arg->call), 0, "", (GRegexMatchFlags) 0, NULL);
707 gchar *ifname_underscore = g_regex_replace(regex_ifname, ifname, strlen(ifname), 0, "_", (GRegexMatchFlags) 0, NULL);
708 gchar *ifname_lowercase = g_ascii_strdown(ifname_underscore, -1);
709 gchar *pref_ifname = g_strconcat(ifname_lowercase, ".", pref_name, NULL);
711 pref = prefs_find_preference(prefs_find_module("extcap"), pref_ifname);
714 g_free(ifname_underscore);
715 g_free(ifname_lowercase);
721 g_regex_unref(regex_name);
725 g_regex_unref(regex_ifname);
731 static gboolean cb_preference(extcap_callback_info_t cb_info)
733 GList *arguments = NULL;
734 GList **il = (GList **) cb_info.data;
735 module_t *dev_module = NULL;
737 arguments = extcap_parse_args(cb_info.output);
739 dev_module = prefs_find_module("extcap");
743 GList *walker = arguments;
745 GRegex *regex_name = g_regex_new("[-]+", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
746 GRegex *regex_ifname = g_regex_new("(?![a-zA-Z1-9_]).", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
747 if (regex_name && regex_ifname)
749 while (walker != NULL)
751 extcap_arg *arg = (extcap_arg *)walker->data;
752 arg->device_name = g_strdup(cb_info.ifname);
756 struct preference *pref = NULL;
758 gchar *pref_name = g_regex_replace(regex_name, arg->call, strlen(arg->call), 0, "", (GRegexMatchFlags) 0, NULL);
759 gchar *ifname_underscore = g_regex_replace(regex_ifname, cb_info.ifname, strlen(cb_info.ifname), 0, "_", (GRegexMatchFlags) 0, NULL);
760 gchar *ifname_lowercase = g_ascii_strdown(ifname_underscore, -1);
761 gchar *pref_ifname = g_strconcat(ifname_lowercase, ".", pref_name, NULL);
763 if ((pref = prefs_find_preference(dev_module, pref_ifname)) == NULL)
765 char *pref_name_for_prefs;
766 char *pref_title = wmem_strdup(wmem_epan_scope(), arg->display);
768 arg->pref_valptr = extcap_prefs_dynamic_valptr(pref_ifname, &pref_name_for_prefs);
769 /* Set an initial value if any (the string will be copied at registration) */
770 if (arg->default_complex)
772 *arg->pref_valptr = arg->default_complex->_val;
775 prefs_register_string_preference(dev_module, pref_name_for_prefs,
776 pref_title, pref_title, (const char **)arg->pref_valptr);
780 /* Been here before, restore stored value */
781 if (arg->pref_valptr == NULL)
783 arg->pref_valptr = (gchar**)g_hash_table_lookup(extcap_prefs_dynamic_vals, pref_ifname);
788 g_free(ifname_underscore);
789 g_free(ifname_lowercase);
793 walker = g_list_next(walker);
798 g_regex_unref(regex_name);
802 g_regex_unref(regex_ifname);
806 *il = g_list_append(*il, arguments);
808 /* By returning false, extcap_foreach will break on first found */
813 extcap_get_if_configuration(const char *ifname)
815 GList * arguments = NULL;
817 gchar **err_str = NULL;
819 if (extcap_if_exists(ifname))
821 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
824 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_CONFIG));
825 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_INTERFACE));
826 arguments = g_list_append(arguments, g_strdup(ifname));
828 extcap_callback_info_t cb_info;
830 cb_info.err_str = err_str;
831 cb_info.ifname = ifname;
833 extcap_foreach(arguments, cb_preference, cb_info, NULL);
835 g_list_free_full(arguments, g_free);
841 static gboolean cb_reload_preference(extcap_callback_info_t cb_info)
843 GList *arguments = NULL, * walker = NULL;
844 GList **il = (GList **) cb_info.data;
846 arguments = extcap_parse_values(cb_info.output);
848 walker = g_list_first((GList *)(arguments));
849 while (walker != NULL)
851 extcap_value * val = (extcap_value *)walker->data;
852 *il = g_list_append(*il, val);
853 walker = g_list_next(walker);
855 g_list_free(arguments);
857 /* By returning false, extcap_foreach will break on first found */
862 extcap_get_if_configuration_values(const char * ifname, const char * argname, GHashTable *arguments)
866 gchar **err_str = NULL;
868 if (extcap_if_exists(ifname))
870 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
873 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_CONFIG));
874 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_INTERFACE));
875 args = g_list_append(args, g_strdup(ifname));
876 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_RELOAD_OPTION));
877 args = g_list_append(args, g_strdup(argname));
881 GList * keys = g_hash_table_get_keys(arguments);
884 const gchar * key_data = (const gchar *)keys->data;
885 args = g_list_append(args, g_strdup(key_data));
886 args = g_list_append(args, g_strdup((const gchar *)g_hash_table_lookup(arguments, key_data)));
887 keys = g_list_next(keys);
891 extcap_callback_info_t cb_info;
893 cb_info.err_str = err_str;
894 cb_info.ifname = ifname;
896 extcap_foreach(args, cb_reload_preference, cb_info, NULL);
898 g_list_free_full(args, g_free);
905 * If is_required is FALSE: returns TRUE if the extcap interface has
906 * configurable options.
907 * If is_required is TRUE: returns TRUE when the extcap interface has
908 * configurable options that required modification. (For example, when an
909 * argument is required but empty.)
912 extcap_has_configuration(const char *ifname, gboolean is_required)
914 GList *arguments = 0;
915 GList *walker = 0, * item = 0;
917 gboolean found = FALSE;
919 arguments = extcap_get_if_configuration((const char *)(ifname));
920 walker = g_list_first(arguments);
922 while (walker != NULL && !found)
924 item = g_list_first((GList *)(walker->data));
925 while (item != NULL && !found)
927 if ((extcap_arg *)(item->data) != NULL)
929 extcap_arg *arg = (extcap_arg *)(item->data);
930 /* Should required options be present, or any kind of options */
935 else if (arg->is_required)
937 const gchar *stored = NULL;
938 const gchar *defval = NULL;
940 if (arg->pref_valptr != NULL)
942 stored = *arg->pref_valptr;
945 if (arg->default_complex != NULL && arg->default_complex->_val != NULL)
947 defval = arg->default_complex->_val;
950 if (arg->is_required)
952 /* If stored and defval is identical and the argument is required,
953 * configuration is needed */
954 if (defval && stored && g_strcmp0(stored, defval) == 0)
958 else if (!defval && (!stored || !*stored))
964 if (arg->arg_type == EXTCAP_ARG_FILESELECT)
966 if (arg->fileexists && !(file_exists(defval) || file_exists(stored)))
976 walker = walker->next;
978 extcap_free_if_configuration(arguments, TRUE);
983 static gboolean cb_verify_filter(extcap_callback_info_t cb_info)
985 extcap_filter_status *status = (extcap_filter_status *)cb_info.data;
986 size_t output_size, i;
988 output_size = strlen(cb_info.output);
989 if (output_size == 0) {
990 *status = EXTCAP_FILTER_VALID;
992 *status = EXTCAP_FILTER_INVALID;
993 for (i = 0; i < output_size; i++) {
994 if (cb_info.output[i] == '\n' || cb_info.output[i] == '\r') {
995 cb_info.output[i] = '\0';
999 *cb_info.err_str = g_strdup(cb_info.output);
1005 extcap_filter_status
1006 extcap_verify_capture_filter(const char *ifname, const char *filter, gchar **err_str)
1008 GList * arguments = NULL;
1009 extcap_filter_status status = EXTCAP_FILTER_UNKNOWN;
1011 if (extcap_if_exists(ifname))
1013 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
1016 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_CAPTURE_FILTER));
1017 arguments = g_list_append(arguments, g_strdup(filter));
1018 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_INTERFACE));
1019 arguments = g_list_append(arguments, g_strdup(ifname));
1021 extcap_callback_info_t cb_info;
1022 cb_info.data = &status;
1023 cb_info.err_str = err_str;
1024 cb_info.ifname = ifname;
1026 extcap_foreach(arguments, cb_verify_filter, cb_info, NULL);
1027 g_list_free_full(arguments, g_free);
1034 extcap_has_toolbar(const char *ifname)
1036 if (!iface_toolbar_use())
1041 GList *toolbar_list = g_hash_table_get_values (_toolbars);
1042 for (GList *walker = toolbar_list; walker; walker = walker->next)
1044 iface_toolbar *toolbar = (iface_toolbar *) walker->data;
1045 if (g_list_find_custom(toolbar->ifnames, ifname, (GCompareFunc) strcmp))
1054 void extcap_if_cleanup(capture_options *capture_opts, gchar **errormsg)
1056 interface_options *interface_opts;
1057 ws_pipe_t *pipedata;
1059 gboolean overwrite_exitcode;
1061 #define STDERR_BUFFER_SIZE 1024
1063 for (icnt = 0; icnt < capture_opts->ifaces->len; icnt++)
1065 interface_opts = &g_array_index(capture_opts->ifaces, interface_options,
1068 /* skip native interfaces */
1069 if (interface_opts->if_type != IF_EXTCAP)
1074 overwrite_exitcode = FALSE;
1076 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1077 "Extcap [%s] - Cleaning up fifo: %s; PID: %d", interface_opts->name,
1078 interface_opts->extcap_fifo, interface_opts->extcap_pid);
1080 if (interface_opts->extcap_pipe_h != INVALID_HANDLE_VALUE)
1082 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1083 "Extcap [%s] - Closing pipe", interface_opts->name);
1084 FlushFileBuffers(interface_opts->extcap_pipe_h);
1085 DisconnectNamedPipe(interface_opts->extcap_pipe_h);
1086 CloseHandle(interface_opts->extcap_pipe_h);
1087 interface_opts->extcap_pipe_h = INVALID_HANDLE_VALUE;
1089 if (interface_opts->extcap_control_in_h != INVALID_HANDLE_VALUE)
1091 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1092 "Extcap [%s] - Closing control_in pipe", interface_opts->name);
1093 FlushFileBuffers(interface_opts->extcap_control_in_h);
1094 DisconnectNamedPipe(interface_opts->extcap_control_in_h);
1095 CloseHandle(interface_opts->extcap_control_in_h);
1096 interface_opts->extcap_control_in_h = INVALID_HANDLE_VALUE;
1098 if (interface_opts->extcap_control_out_h != INVALID_HANDLE_VALUE)
1100 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1101 "Extcap [%s] - Closing control_out pipe", interface_opts->name);
1102 FlushFileBuffers(interface_opts->extcap_control_out_h);
1103 DisconnectNamedPipe(interface_opts->extcap_control_out_h);
1104 CloseHandle(interface_opts->extcap_control_out_h);
1105 interface_opts->extcap_control_out_h = INVALID_HANDLE_VALUE;
1108 if (interface_opts->extcap_fifo != NULL && file_exists(interface_opts->extcap_fifo))
1110 /* the fifo will not be freed here, but with the other capture_opts in capture_sync */
1111 ws_unlink(interface_opts->extcap_fifo);
1112 interface_opts->extcap_fifo = NULL;
1114 if (interface_opts->extcap_control_in && file_exists(interface_opts->extcap_control_in))
1116 ws_unlink(interface_opts->extcap_control_in);
1117 interface_opts->extcap_control_in = NULL;
1119 if (interface_opts->extcap_control_out && file_exists(interface_opts->extcap_control_out))
1121 ws_unlink(interface_opts->extcap_control_out);
1122 interface_opts->extcap_control_out = NULL;
1125 /* Maybe the client closed and removed fifo, but ws should check if
1126 * pid should be closed */
1127 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1128 "Extcap [%s] - Closing spawned PID: %d", interface_opts->name,
1129 interface_opts->extcap_pid);
1131 pipedata = (ws_pipe_t *) interface_opts->extcap_pipedata;
1134 if (pipedata->stderr_fd > 0 && ws_pipe_data_available(pipedata->stderr_fd))
1136 buffer = (gchar *)g_malloc0(STDERR_BUFFER_SIZE + 1);
1137 ws_read_string_from_pipe(ws_get_pipe_handle(pipedata->stderr_fd), buffer, STDERR_BUFFER_SIZE + 1);
1138 if (strlen(buffer) > 0)
1140 pipedata->stderr_msg = g_strdup_printf("%s", buffer);
1141 pipedata->exitcode = 1;
1147 /* Final child watch may not have been called */
1148 if (interface_opts->extcap_child_watch != 0)
1150 extcap_child_watch_cb(pipedata->pid, 0, capture_opts);
1151 /* it will have changed in extcap_child_watch_cb */
1152 interface_opts = &g_array_index(capture_opts->ifaces, interface_options,
1157 if (pipedata->stderr_msg != NULL)
1159 overwrite_exitcode = TRUE;
1162 if (overwrite_exitcode || pipedata->exitcode != 0)
1164 if (pipedata->stderr_msg != 0)
1166 if (*errormsg == NULL)
1168 *errormsg = g_strdup_printf("Error by extcap pipe: %s", pipedata->stderr_msg);
1172 gchar *temp = g_strconcat(*errormsg, "\nError by extcap pipe: " , pipedata->stderr_msg, NULL);
1176 g_free(pipedata->stderr_msg);
1179 pipedata->stderr_msg = NULL;
1180 pipedata->exitcode = 0;
1184 if (interface_opts->extcap_child_watch > 0)
1186 g_source_remove(interface_opts->extcap_child_watch);
1187 interface_opts->extcap_child_watch = 0;
1190 if (interface_opts->extcap_pid != WS_INVALID_PID)
1193 TerminateProcess(interface_opts->extcap_pid, 0);
1195 g_spawn_close_pid(interface_opts->extcap_pid);
1196 interface_opts->extcap_pid = WS_INVALID_PID;
1198 g_free(interface_opts->extcap_pipedata);
1199 interface_opts->extcap_pipedata = NULL;
1205 extcap_add_arg_and_remove_cb(gpointer key, gpointer value, gpointer data)
1207 GPtrArray *args = (GPtrArray *)data;
1211 g_ptr_array_add(args, g_strdup((const gchar *)key));
1215 g_ptr_array_add(args, g_strdup((const gchar *)value));
1224 void extcap_child_watch_cb(GPid pid, gint status, gpointer user_data)
1227 interface_options *interface_opts;
1228 ws_pipe_t *pipedata = NULL;
1229 capture_options *capture_opts = (capture_options *)(user_data);
1231 if (capture_opts == NULL || capture_opts->ifaces == NULL || capture_opts->ifaces->len == 0)
1236 /* Close handle to child process. */
1237 g_spawn_close_pid(pid);
1239 /* Update extcap_pid in interface options structure. */
1240 for (i = 0; i < capture_opts->ifaces->len; i++)
1242 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
1243 if (interface_opts->extcap_pid == pid)
1245 pipedata = (ws_pipe_t *)interface_opts->extcap_pipedata;
1246 if (pipedata != NULL)
1248 interface_opts->extcap_pid = WS_INVALID_PID;
1249 pipedata->exitcode = 0;
1251 if (WIFEXITED(status))
1253 if (WEXITSTATUS(status) != 0)
1255 pipedata->exitcode = WEXITSTATUS(status);
1260 pipedata->exitcode = G_SPAWN_ERROR_FAILED;
1265 pipedata->exitcode = status;
1268 if (status == 0 && pipedata->stderr_msg != NULL)
1270 pipedata->exitcode = 1;
1273 g_source_remove(interface_opts->extcap_child_watch);
1274 interface_opts->extcap_child_watch = 0;
1281 GPtrArray *extcap_prepare_arguments(interface_options *interface_opts)
1283 GPtrArray *result = NULL;
1285 if (interface_opts->if_type == IF_EXTCAP)
1287 result = g_ptr_array_new();
1289 #define add_arg(X) g_ptr_array_add(result, g_strdup(X))
1291 add_arg(interface_opts->extcap);
1292 add_arg(EXTCAP_ARGUMENT_RUN_CAPTURE);
1293 add_arg(EXTCAP_ARGUMENT_INTERFACE);
1294 add_arg(interface_opts->name);
1295 if (interface_opts->cfilter && strlen(interface_opts->cfilter) > 0)
1297 add_arg(EXTCAP_ARGUMENT_CAPTURE_FILTER);
1298 add_arg(interface_opts->cfilter);
1300 add_arg(EXTCAP_ARGUMENT_RUN_PIPE);
1301 add_arg(interface_opts->extcap_fifo);
1302 if (interface_opts->extcap_control_in)
1304 add_arg(EXTCAP_ARGUMENT_CONTROL_OUT);
1305 add_arg(interface_opts->extcap_control_in);
1307 if (interface_opts->extcap_control_out)
1309 add_arg(EXTCAP_ARGUMENT_CONTROL_IN);
1310 add_arg(interface_opts->extcap_control_out);
1312 if (interface_opts->extcap_args == NULL || g_hash_table_size(interface_opts->extcap_args) == 0)
1314 /* User did not perform interface configuration.
1316 * Check if there are any boolean flags that are set by default
1317 * and hence their argument should be added.
1322 arglist = extcap_get_if_configuration(interface_opts->name);
1323 for (elem = g_list_first(arglist); elem; elem = elem->next)
1326 extcap_arg *arg_iter;
1328 if (elem->data == NULL)
1333 arg_list = g_list_first((GList *)elem->data);
1334 while (arg_list != NULL)
1336 const gchar *stored = NULL;
1337 /* In case of boolflags only first element in arg_list is relevant. */
1338 arg_iter = (extcap_arg *)(arg_list->data);
1339 if (arg_iter->pref_valptr != NULL)
1341 stored = *arg_iter->pref_valptr;
1344 if (arg_iter->arg_type == EXTCAP_ARG_BOOLFLAG)
1346 if (extcap_complex_get_bool(arg_iter->default_complex))
1348 add_arg(arg_iter->call);
1350 else if (g_strcmp0(stored, "true") == 0)
1352 add_arg(arg_iter->call);
1357 if (stored && strlen(stored) > 0) {
1358 add_arg(arg_iter->call);
1363 arg_list = arg_list->next;
1367 extcap_free_if_configuration(arglist, TRUE);
1371 g_hash_table_foreach_remove(interface_opts->extcap_args, extcap_add_arg_and_remove_cb, result);
1381 static void ptr_array_free(gpointer data, gpointer user_data _U_)
1386 /* call mkfifo for each extcap,
1387 * returns FALSE if there's an error creating a FIFO */
1389 extcap_init_interfaces(capture_options *capture_opts)
1392 interface_options *interface_opts;
1393 ws_pipe_t *pipedata;
1395 for (i = 0; i < capture_opts->ifaces->len; i++)
1397 GPtrArray *args = NULL;
1398 GPid pid = WS_INVALID_PID;
1400 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
1402 /* skip native interfaces */
1403 if (interface_opts->if_type != IF_EXTCAP)
1408 /* create control pipes if having toolbar */
1409 if (extcap_has_toolbar(interface_opts->name))
1411 extcap_create_pipe(interface_opts->name, &interface_opts->extcap_control_in,
1412 EXTCAP_CONTROL_IN_PREFIX);
1414 interface_opts->extcap_control_in_h = pipe_h;
1416 extcap_create_pipe(interface_opts->name, &interface_opts->extcap_control_out,
1417 EXTCAP_CONTROL_OUT_PREFIX);
1419 interface_opts->extcap_control_out_h = pipe_h;
1423 /* create pipe for fifo */
1424 if (!extcap_create_pipe(interface_opts->name, &interface_opts->extcap_fifo,
1425 EXTCAP_PIPE_PREFIX))
1430 interface_opts->extcap_pipe_h = pipe_h;
1433 /* Create extcap call */
1434 args = extcap_prepare_arguments(interface_opts);
1436 pipedata = g_new0(ws_pipe_t, 1);
1438 pid = ws_pipe_spawn_async(pipedata, args);
1440 g_ptr_array_foreach(args, ptr_array_free, NULL);
1441 g_ptr_array_free(args, TRUE);
1443 if (pid == WS_INVALID_PID)
1449 ws_close(pipedata->stdin_fd);
1450 interface_opts->extcap_pid = pid;
1452 interface_opts->extcap_child_watch =
1453 g_child_watch_add(pid, extcap_child_watch_cb, (gpointer)capture_opts);
1456 /* On Windows, wait for extcap to connect to named pipe.
1457 * Some extcaps will present UAC screen to user.
1458 * 30 second timeout should be reasonable timeout for extcap to
1459 * connect to named pipe (including user interaction).
1460 * Wait on multiple object in case of extcap termination
1461 * without opening pipe.
1463 if (pid != WS_INVALID_PID)
1465 HANDLE pipe_handles[3];
1466 int num_pipe_handles = 1;
1467 pipe_handles[0] = interface_opts->extcap_pipe_h;
1469 if (extcap_has_toolbar(interface_opts->name))
1471 pipe_handles[1] = interface_opts->extcap_control_in_h;
1472 pipe_handles[2] = interface_opts->extcap_control_out_h;
1473 num_pipe_handles += 2;
1476 ws_pipe_wait_for_pipe(pipe_handles, num_pipe_handles, pid);
1480 interface_opts->extcap_pipedata = (gpointer) pipedata;
1487 gboolean extcap_create_pipe(const gchar *ifname, gchar **fifo, const gchar *pipe_prefix)
1489 gchar timestr[ 14 + 1 ];
1490 time_t current_time;
1491 gchar *pipename = NULL;
1492 SECURITY_ATTRIBUTES security;
1494 /* create pipename */
1495 current_time = time(NULL);
1497 * XXX - we trust Windows not to return a time before the Epoch here,
1498 * so we won't get a null pointer back from localtime().
1500 strftime(timestr, sizeof(timestr), "%Y%m%d%H%M%S", localtime(¤t_time));
1501 pipename = g_strconcat("\\\\.\\pipe\\", pipe_prefix, "_", ifname, "_", timestr, NULL);
1503 /* Security struct to enable Inheritable HANDLE */
1504 memset(&security, 0, sizeof(SECURITY_ATTRIBUTES));
1505 security.nLength = sizeof(SECURITY_ATTRIBUTES);
1506 security.bInheritHandle = TRUE;
1507 security.lpSecurityDescriptor = NULL;
1509 /* create a namedPipe */
1510 pipe_h = CreateNamedPipe(
1511 utf_8to16(pipename),
1512 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1513 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
1518 if (pipe_h == INVALID_HANDLE_VALUE)
1520 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "\nError creating pipe => (%d)", GetLastError());
1526 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "\nWireshark Created pipe =>(%s)", pipename);
1527 *fifo = g_strdup(pipename);
1533 gboolean extcap_create_pipe(const gchar *ifname, gchar **fifo, const gchar *pipe_prefix)
1535 gchar *temp_name = NULL;
1538 gchar *pfx = g_strconcat(pipe_prefix, "_", ifname, NULL);
1539 if ((fd = create_tempfile(&temp_name, pfx, NULL)) < 0)
1548 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1549 "Extcap - Creating fifo: %s", temp_name);
1551 if (file_exists(temp_name))
1553 ws_unlink(temp_name);
1556 if (mkfifo(temp_name, 0600) == 0)
1558 *fifo = g_strdup(temp_name);
1565 /************* EXTCAP LOAD INTERFACE LIST ***************
1567 * The following code handles loading and reloading the interface list. It is explicitly
1568 * kept separate from the rest
1573 extcap_free_interface_info(gpointer data)
1575 extcap_info *info = (extcap_info *)data;
1577 g_free(info->basename);
1578 g_free(info->full_path);
1579 g_free(info->version);
1582 extcap_free_interfaces(info->interfaces);
1587 static extcap_info *
1588 extcap_ensure_interface(const gchar * toolname, gboolean create_if_nonexist)
1590 extcap_info * element = 0;
1592 if ( prefs.capture_no_extcap )
1598 if ( ! _loaded_interfaces )
1599 _loaded_interfaces = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_interface);
1601 element = (extcap_info *) g_hash_table_lookup(_loaded_interfaces, toolname );
1602 if ( ! element && create_if_nonexist )
1604 g_hash_table_insert(_loaded_interfaces, g_strdup(toolname), g_new0(extcap_info, 1));
1605 element = (extcap_info *) g_hash_table_lookup(_loaded_interfaces, toolname );
1612 extcap_get_tool_by_ifname(const gchar *ifname)
1614 if ( ifname && _tool_for_ifname )
1616 gchar * toolname = (gchar *)g_hash_table_lookup(_tool_for_ifname, ifname);
1618 return extcap_ensure_interface(toolname, FALSE);
1625 extcap_get_tool_info(const gchar * toolname)
1627 return extcap_ensure_interface(toolname, FALSE);
1630 static void remove_extcap_entry(gpointer entry, gpointer data _U_)
1632 extcap_interface *int_iter = (extcap_interface*)entry;
1634 if (int_iter->if_type == EXTCAP_SENTENCE_EXTCAP)
1635 extcap_free_interface(entry);
1638 static gboolean cb_load_interfaces(extcap_callback_info_t cb_info)
1640 GList * interfaces = NULL, * control_items = NULL, * walker = NULL;
1641 extcap_interface * int_iter = NULL;
1642 extcap_info * element = NULL;
1643 iface_toolbar * toolbar_entry = NULL;
1644 gchar * toolname = g_path_get_basename(cb_info.extcap);
1646 GList * interface_keys = g_hash_table_get_keys(_loaded_interfaces);
1648 /* Load interfaces from utility */
1649 interfaces = extcap_parse_interfaces(cb_info.output, &control_items);
1653 toolbar_entry = g_new0(iface_toolbar, 1);
1654 toolbar_entry->controls = control_items;
1657 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Loading interface list for %s ", cb_info.extcap);
1659 /* Seems, that there where no interfaces to be loaded */
1660 if ( ! interfaces || g_list_length(interfaces) == 0 )
1662 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Cannot load interfaces for %s", cb_info.extcap );
1663 /* Some utilities, androiddump for example, may actually don't present any interfaces, even
1664 * if the utility itself is present. In such a case, we return here, but do not return
1665 * FALSE, or otherwise further loading of other utilities will be stopped */
1666 g_list_free(interface_keys);
1671 /* Load or create the storage element for the tool */
1672 element = extcap_ensure_interface(toolname, TRUE);
1673 if ( element == NULL )
1675 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_ERROR, "Cannot store interface %s, maybe duplicate?", cb_info.extcap );
1676 g_list_foreach(interfaces, remove_extcap_entry, NULL);
1677 g_list_free(interfaces);
1678 g_list_free(interface_keys);
1683 walker = interfaces;
1685 while (walker != NULL)
1687 int_iter = (extcap_interface *)walker->data;
1689 if (int_iter->call != NULL)
1690 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Interface found %s\n", int_iter->call);
1692 /* Help is not necessarily stored with the interface, but rather with the version string.
1693 * As the version string allways comes in front of the interfaces, this ensures, that it get's
1694 * properly stored with the interface */
1695 if (int_iter->if_type == EXTCAP_SENTENCE_EXTCAP)
1697 if (int_iter->call != NULL)
1698 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Extcap [%s] ", int_iter->call);
1700 /* Only initialize values if none are set. Need to check only one element here */
1701 if ( ! element->version )
1703 element->version = g_strdup(int_iter->version);
1704 element->basename = g_strdup(toolname);
1705 element->full_path = g_strdup(cb_info.extcap);
1706 element->help = g_strdup(int_iter->help);
1709 help = int_iter->help;
1712 toolbar_entry->menu_title = g_strdup(int_iter->display);
1713 toolbar_entry->help = g_strdup(int_iter->help);
1716 walker = g_list_next(walker);
1720 /* Only interface definitions will be parsed here. help is already set by the extcap element,
1721 * which makes it necessary to have version in the list before the interfaces. This is normally
1722 * the case by design, but could be changed by separating the information in extcap-base. */
1723 if ( int_iter->if_type == EXTCAP_SENTENCE_INTERFACE )
1725 if ( g_list_find(interface_keys, int_iter->call) )
1727 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_WARNING, "Extcap interface \"%s\" is already provided by \"%s\" ",
1728 int_iter->call, (gchar *)extcap_if_executable(int_iter->call));
1729 walker = g_list_next(walker);
1733 if ((int_iter->call != NULL) && (int_iter->display))
1734 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Interface [%s] \"%s\" ", int_iter->call, int_iter->display);
1736 int_iter->extcap_path = g_strdup(cb_info.extcap);
1738 /* Only set the help, if it exists and no parsed help information is present */
1739 if ( ! int_iter->help && help )
1740 int_iter->help = g_strdup(help);
1742 element->interfaces = g_list_append(element->interfaces, int_iter);
1743 g_hash_table_insert(_tool_for_ifname, g_strdup(int_iter->call), g_strdup(toolname));
1747 if (!toolbar_entry->menu_title)
1749 toolbar_entry->menu_title = g_strdup(int_iter->display);
1751 toolbar_entry->ifnames = g_list_append(toolbar_entry->ifnames, g_strdup(int_iter->call));
1755 walker = g_list_next(walker);
1758 if (toolbar_entry && toolbar_entry->menu_title)
1760 iface_toolbar_add(toolbar_entry);
1761 extcap_iface_toolbar_add(cb_info.extcap, toolbar_entry);
1764 g_list_foreach(interfaces, remove_extcap_entry, NULL);
1765 g_list_free(interfaces);
1766 g_list_free(interface_keys);
1772 /* Handles loading of the interfaces.
1774 * A list of interfaces can be obtained by calling \ref extcap_loaded_interfaces
1777 extcap_load_interface_list(void)
1779 gchar *error = NULL;
1781 if (prefs.capture_no_extcap)
1786 // Remove existing interface toolbars here instead of in extcap_clear_interfaces()
1787 // to avoid flicker in shown toolbars when refreshing interfaces.
1788 GList *toolbar_list = g_hash_table_get_values (_toolbars);
1789 for (GList *walker = toolbar_list; walker; walker = walker->next)
1791 iface_toolbar *toolbar = (iface_toolbar *) walker->data;
1792 iface_toolbar_remove(toolbar->menu_title);
1794 g_hash_table_remove_all(_toolbars);
1796 _toolbars = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_toolbar);
1799 if (_loaded_interfaces == NULL)
1801 GList * arguments = NULL;
1802 GList * fallback = NULL;
1806 _loaded_interfaces = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_interface_info);
1807 /* Cleanup lookup table */
1808 if ( _tool_for_ifname )
1810 g_hash_table_remove_all(_tool_for_ifname);
1811 _tool_for_ifname = 0;
1813 _tool_for_ifname = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
1816 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_LIST_INTERFACES));
1817 fallback = g_list_append(fallback, g_strdup(EXTCAP_ARGUMENT_LIST_INTERFACES));
1819 get_ws_version_number(&major, &minor, NULL);
1820 arguments = g_list_append(arguments, g_strdup_printf("%s=%d.%d", EXTCAP_ARGUMENT_VERSION, major, minor));
1822 extcap_callback_info_t cb_info;
1823 cb_info.data = NULL;
1824 cb_info.ifname = NULL;
1825 cb_info.err_str = &error;
1827 extcap_foreach(arguments, cb_load_interfaces, cb_info, fallback);
1829 g_list_free_full(fallback, g_free);
1830 g_list_free_full(arguments, g_free);
1835 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1840 * indent-tabs-mode: nil
1843 * vi: set shiftwidth=4 tabstop=8 expandtab:
1844 * :indentSize=4:tabSize=8:noTabs=true: