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 #ifdef HAVE_SYS_TYPES_H
29 #include <sys/types.h>
31 #ifdef HAVE_SYS_WAIT_H
38 #include <epan/prefs.h>
40 #include "ui/iface_toolbar.h"
42 #include <wsutil/glib-compat.h>
43 #include <wsutil/file_util.h>
44 #include <wsutil/filesystem.h>
45 #include <wsutil/ws_pipe.h>
46 #include <wsutil/tempfile.h>
48 #include "capture_opts.h"
51 #include "extcap_parser.h"
53 #include "version_info.h"
56 static HANDLE pipe_h = INVALID_HANDLE_VALUE;
59 static void extcap_child_watch_cb(GPid pid, gint status, gpointer user_data);
61 /* internal container, for all the extcap executables that have been found.
62 * Will be resetted if extcap_clear_interfaces() is being explicitly called
63 * and is being used for printing information about all extcap interfaces found,
64 * as well as storing all sub-interfaces
66 static GHashTable * _loaded_interfaces = NULL;
68 /* Internal container, which maps each ifname to the tool providing it, for faster
69 * lookup. The key and string value are owned by this table.
71 static GHashTable * _tool_for_ifname = NULL;
73 /* internal container, for all the extcap executables that have been found
74 * and that provides a toolbar with controls to be added to a Interface Toolbar
76 static GHashTable *_toolbars = NULL;
78 /* internal container, to map preference names to pointers that hold preference
79 * values. These ensure that preferences can survive extcap if garbage
80 * collection, and does not lead to dangling pointers in the prefs subsystem.
82 static GHashTable *extcap_prefs_dynamic_vals = NULL;
84 typedef struct _extcap_callback_info_t
91 } extcap_callback_info_t;
93 /* Callback definition for extcap_foreach */
94 typedef gboolean(*extcap_cb_t)(extcap_callback_info_t info_structure);
96 static void extcap_load_interface_list(void);
99 extcap_loaded_interfaces(void)
101 if (prefs.capture_no_extcap)
104 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
105 extcap_load_interface_list();
107 return _loaded_interfaces;
111 extcap_clear_interfaces(void)
113 if ( _loaded_interfaces )
114 g_hash_table_destroy(_loaded_interfaces);
115 _loaded_interfaces = NULL;
117 if ( _tool_for_ifname )
118 g_hash_table_destroy(_tool_for_ifname);
119 _tool_for_ifname = NULL;
122 guint extcap_count(void)
124 const char *dirname = get_extcap_dir();
130 if ((dir = g_dir_open(dirname, 0, NULL)) != NULL)
132 GString *extcap_path = NULL;
135 extcap_path = g_string_new("");
136 while ((file = g_dir_read_name(dir)) != NULL)
138 /* full path to extcap binary */
139 g_string_printf(extcap_path, "%s" G_DIR_SEPARATOR_S "%s", dirname, file);
140 /* treat anything executable as an extcap binary */
141 if (g_file_test(extcap_path->str, G_FILE_TEST_IS_REGULAR) &&
142 g_file_test(extcap_path->str, G_FILE_TEST_IS_EXECUTABLE))
149 g_string_free(extcap_path, TRUE);
155 extcap_if_exists(const gchar *ifname)
157 if (!ifname || !_tool_for_ifname)
162 if (g_hash_table_lookup(_tool_for_ifname, ifname))
170 static extcap_interface *
171 extcap_find_interface_for_ifname(const gchar *ifname)
173 extcap_interface * result = NULL;
175 if ( !ifname || ! _tool_for_ifname || ! _loaded_interfaces )
178 gchar * extcap_util = (gchar *)g_hash_table_lookup(_tool_for_ifname, ifname);
182 extcap_info * element = (extcap_info *)g_hash_table_lookup(_loaded_interfaces, extcap_util);
186 GList * walker = element->interfaces;
187 while ( walker && walker->data && ! result )
189 extcap_interface * interface = (extcap_interface *)walker->data;
190 if ( g_strcmp0(interface->call, ifname) == 0 )
196 walker = g_list_next ( walker );
203 extcap_free_toolbar_value(iface_toolbar_value *value)
210 g_free(value->value);
211 g_free(value->display);
216 extcap_free_toolbar_control(iface_toolbar_control *control)
223 g_free(control->display);
224 g_free(control->validation);
225 g_free(control->tooltip);
226 if (control->ctrl_type == INTERFACE_TYPE_STRING) {
227 g_free(control->default_value.string);
229 g_list_foreach(control->values, (GFunc)extcap_free_toolbar_value, NULL);
230 g_list_free(control->values);
235 extcap_free_toolbar(gpointer data)
242 iface_toolbar *toolbar = (iface_toolbar *)data;
244 g_free(toolbar->menu_title);
245 g_free(toolbar->help);
246 g_list_free_full(toolbar->ifnames, g_free);
247 g_list_foreach(toolbar->controls, (GFunc)extcap_free_toolbar_control, NULL);
248 g_list_free(toolbar->controls);
253 extcap_if_exists_for_extcap(const gchar *ifname, const gchar *extcap)
255 extcap_interface *entry = extcap_find_interface_for_ifname(ifname);
257 if (entry && strcmp(entry->extcap_path, extcap) == 0)
266 extcap_if_executable(const gchar *ifname)
268 extcap_interface *interface = extcap_find_interface_for_ifname(ifname);
269 return interface != NULL ? interface->extcap_path : NULL;
273 extcap_iface_toolbar_add(const gchar *extcap, iface_toolbar *toolbar_entry)
277 if (!extcap || !toolbar_entry)
282 toolname = g_path_get_basename(extcap);
284 if (!g_hash_table_lookup(_toolbars, toolname))
286 g_hash_table_insert(_toolbars, g_strdup(toolname), toolbar_entry);
293 extcap_convert_arguments_to_array(GList * arguments)
295 gchar ** result = NULL;
298 GList * walker = g_list_first(arguments);
301 result = (gchar **) g_malloc0(sizeof(gchar *) * (g_list_length(arguments)));
305 result[cnt] = g_strdup((const gchar *)walker->data);
306 walker = g_list_next(walker);
313 static void extcap_free_array(gchar ** args, int argc)
317 for ( cnt = 0; cnt < argc; cnt++ )
322 /* Note: args does not need to be NULL-terminated. */
323 static gboolean extcap_foreach(GList * arguments,
324 extcap_cb_t cb, extcap_callback_info_t cb_info, GList * fallback_arguments)
328 const char *dirname = get_extcap_dir();
332 if (arguments && (dir = g_dir_open(dirname, 0, NULL)) != NULL)
334 GString *extcap_path = NULL;
336 gchar ** args = extcap_convert_arguments_to_array(arguments);
337 int cnt = g_list_length(arguments);
339 extcap_path = g_string_new("");
340 while (keep_going && (file = g_dir_read_name(dir)) != NULL)
342 gchar *command_output = NULL;
344 /* full path to extcap binary */
345 g_string_printf(extcap_path, "%s" G_DIR_SEPARATOR_S "%s", dirname, file);
346 /* treat anything executable as an extcap binary */
347 if (g_file_test(extcap_path->str, G_FILE_TEST_IS_REGULAR) &&
348 g_file_test(extcap_path->str, G_FILE_TEST_IS_EXECUTABLE))
350 if (extcap_if_exists(cb_info.ifname) && !extcap_if_exists_for_extcap(cb_info.ifname, extcap_path->str))
355 if (ws_pipe_spawn_sync((gchar *) dirname, extcap_path->str, cnt, args, &command_output))
357 cb_info.output = command_output;
358 cb_info.extcap = extcap_path->str;
360 keep_going = cb(cb_info);
362 else if ( fallback_arguments )
364 gchar ** fb_args = extcap_convert_arguments_to_array(fallback_arguments);
366 if (ws_pipe_spawn_sync((gchar *) dirname, extcap_path->str, g_list_length(fallback_arguments), fb_args, &command_output))
368 cb_info.output = command_output;
369 cb_info.extcap = extcap_path->str;
371 keep_going = cb(cb_info);
375 g_free(command_output);
379 extcap_free_array(args, cnt);
382 g_string_free(extcap_path, TRUE);
388 static void extcap_free_dlt(gpointer d, gpointer user_data _U_)
395 g_free(((extcap_dlt *)d)->name);
396 g_free(((extcap_dlt *)d)->display);
400 static void extcap_free_dlts(GList *dlts)
402 g_list_foreach(dlts, extcap_free_dlt, NULL);
406 static gboolean cb_dlt(extcap_callback_info_t cb_info)
408 GList *dlts = NULL, *temp = NULL;
410 if_capabilities_t *caps;
411 GList *linktype_list = NULL;
412 data_link_info_t *data_link_info;
413 extcap_dlt *dlt_item;
415 dlts = extcap_parse_dlts(cb_info.output);
418 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap pipe %s ", cb_info.extcap);
421 * Allocate the interface capabilities structure.
423 caps = (if_capabilities_t *) g_malloc(sizeof * caps);
424 caps->can_set_rfmon = FALSE;
425 caps->timestamp_types = NULL;
429 dlt_item = (extcap_dlt *)dlts->data;
432 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
433 " DLT %d name=\"%s\" display=\"%s\" ", dlt_item->number,
434 dlt_item->name, dlt_item->display);
436 data_link_info = g_new(data_link_info_t, 1);
437 data_link_info->dlt = dlt_item->number;
438 data_link_info->name = g_strdup(dlt_item->name);
439 data_link_info->description = g_strdup(dlt_item->display);
440 linktype_list = g_list_append(linktype_list, data_link_info);
443 dlts = g_list_next(dlts);
446 /* Check to see if we built a list */
447 if (linktype_list != NULL && cb_info.data != NULL)
449 caps->data_link_types = linktype_list;
450 *(if_capabilities_t **) cb_info.data = caps;
456 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " returned no DLTs");
457 *(cb_info.err_str) = g_strdup("Extcap returned no DLTs");
462 extcap_free_dlts(temp);
468 extcap_get_if_dlts(const gchar *ifname, char **err_str)
470 GList * arguments = NULL;
471 if_capabilities_t *caps = NULL;
478 if (extcap_if_exists(ifname))
480 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_LIST_DLTS) );
481 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_INTERFACE) );
482 arguments = g_list_append(arguments, g_strdup(ifname) );
484 extcap_callback_info_t cb_info;
485 cb_info.data = ∩︀
486 cb_info.err_str = err_str;
487 cb_info.ifname = ifname;
489 extcap_foreach(arguments, cb_dlt, cb_info, NULL);
491 g_list_free_full(arguments, g_free);
497 static void extcap_free_interface(gpointer i)
500 extcap_interface *interface = (extcap_interface *)i;
507 g_free(interface->call);
508 g_free(interface->display);
509 g_free(interface->version);
510 g_free(interface->help);
511 g_free(interface->extcap_path);
515 static void extcap_free_interfaces(GList *interfaces)
517 if (interfaces == NULL)
522 g_list_foreach(interfaces, (GFunc)extcap_free_interface, NULL);
523 g_list_free(interfaces);
527 if_info_compare(gconstpointer a, gconstpointer b)
530 const if_info_t *if_a = (const if_info_t *)a;
531 const if_info_t *if_b = (const if_info_t *)b;
533 if ((comp = g_strcmp0(if_a->name, if_b->name)) == 0)
535 return g_strcmp0(if_a->friendly_name, if_b->friendly_name);
542 extcap_get_help_for_ifname(const char *ifname)
544 extcap_interface *interface = extcap_find_interface_for_ifname(ifname);
545 return interface != NULL ? interface->help : NULL;
549 append_extcap_interface_list(GList *list, char **err_str _U_)
551 GList *interface_list = NULL;
552 extcap_interface *data = NULL;
553 GList *ifutilkeys_head = NULL, *ifutilkeys = NULL;
555 if (prefs.capture_no_extcap)
558 /* Update the extcap interfaces and get a list of their if_infos */
559 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
560 extcap_load_interface_list();
562 ifutilkeys_head = g_hash_table_get_keys(_loaded_interfaces);
563 ifutilkeys = ifutilkeys_head;
564 while ( ifutilkeys && ifutilkeys->data )
566 extcap_info * extinfo =
567 (extcap_info *) g_hash_table_lookup(_loaded_interfaces, (gchar *)ifutilkeys->data);
568 GList * walker = extinfo->interfaces;
569 while ( walker && walker->data )
571 interface_list = g_list_append(interface_list, walker->data);
572 walker = g_list_next(walker);
575 ifutilkeys = g_list_next(ifutilkeys);
577 g_list_free(ifutilkeys_head);
580 interface_list = g_list_sort(interface_list, if_info_compare);
582 /* Append the interfaces in that list to the list we're handed. */
583 while (interface_list != NULL)
585 GList *entry = g_list_first(interface_list);
586 data = (extcap_interface *)entry->data;
587 interface_list = g_list_delete_link(interface_list, entry);
589 if_info_t * if_info = g_new0(if_info_t, 1);
590 if_info->name = g_strdup(data->call);
591 if_info->friendly_name = g_strdup(data->display);
593 if_info->type = IF_EXTCAP;
595 if_info->extcap = g_strdup(data->extcap_path);
597 list = g_list_append(list, if_info);
604 extcap_register_preferences_callback(gpointer key, gpointer value _U_, gpointer user_data _U_)
608 arguments = extcap_get_if_configuration((gchar *)key);
609 /* Memory for prefs are external to an interface, they are part of
610 * extcap core, so the parsed arguments can be freed. */
611 extcap_free_if_configuration(arguments, TRUE);
614 void extcap_register_preferences(void)
616 if (prefs.capture_no_extcap)
619 module_t *dev_module = prefs_find_module("extcap");
626 if ( !_loaded_interfaces || g_hash_table_size(_loaded_interfaces) == 0 )
627 extcap_load_interface_list();
630 g_hash_table_foreach(_tool_for_ifname, extcap_register_preferences_callback, NULL);
634 * Releases the dynamic preference value pointers. Must not be called before
635 * prefs_cleanup since these pointers could still be in use.
637 void extcap_cleanup(void)
639 if (extcap_prefs_dynamic_vals)
640 g_hash_table_destroy(extcap_prefs_dynamic_vals);
642 if (_loaded_interfaces)
643 g_hash_table_destroy(_loaded_interfaces);
645 if (_tool_for_ifname)
646 g_hash_table_destroy(_tool_for_ifname);
650 * Obtains a pointer which can store a value for the given preference name.
651 * The preference name that can be passed to the prefs API is stored into
654 * Extcap interfaces (and their preferences) are dynamic, they can be created
655 * and destroyed at will. Thus their data structures are insufficient to pass to
656 * the preferences APIs which require pointers which are valid until the
657 * preferences are removed (at exit).
659 static gchar **extcap_prefs_dynamic_valptr(const char *name, char **pref_name)
662 if (!extcap_prefs_dynamic_vals)
664 /* Initialize table only as needed, most preferences are not dynamic */
665 extcap_prefs_dynamic_vals = g_hash_table_new_full(g_str_hash, g_str_equal,
668 if (!g_hash_table_lookup_extended(extcap_prefs_dynamic_vals, name,
669 (gpointer *)pref_name, (gpointer *)&valp))
671 /* New dynamic pref, allocate, initialize and store. */
672 valp = g_new0(gchar *, 1);
673 *pref_name = g_strdup(name);
674 g_hash_table_insert(extcap_prefs_dynamic_vals, *pref_name, valp);
679 void extcap_free_if_configuration(GList *list, gboolean free_args)
683 for (elem = g_list_first(list); elem; elem = elem->next)
685 if (elem->data != NULL)
687 sl = g_list_first((GList *)elem->data);
690 extcap_free_arg_list(sl);
702 extcap_pref_for_argument(const gchar *ifname, struct _extcap_arg *arg)
704 struct preference *pref = NULL;
706 GRegex *regex_name = g_regex_new("[-]+", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
707 GRegex *regex_ifname = g_regex_new("(?![a-zA-Z1-9_]).", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
708 if (regex_name && regex_ifname)
710 if (prefs_find_module("extcap"))
712 gchar *pref_name = g_regex_replace(regex_name, arg->call, strlen(arg->call), 0, "", (GRegexMatchFlags) 0, NULL);
713 gchar *ifname_underscore = g_regex_replace(regex_ifname, ifname, strlen(ifname), 0, "_", (GRegexMatchFlags) 0, NULL);
714 gchar *ifname_lowercase = g_ascii_strdown(ifname_underscore, -1);
715 gchar *pref_ifname = g_strconcat(ifname_lowercase, ".", pref_name, NULL);
717 pref = prefs_find_preference(prefs_find_module("extcap"), pref_ifname);
720 g_free(ifname_underscore);
721 g_free(ifname_lowercase);
727 g_regex_unref(regex_name);
731 g_regex_unref(regex_ifname);
737 static gboolean cb_preference(extcap_callback_info_t cb_info)
739 GList *arguments = NULL;
740 GList **il = (GList **) cb_info.data;
741 module_t *dev_module = NULL;
743 arguments = extcap_parse_args(cb_info.output);
745 dev_module = prefs_find_module("extcap");
749 GList *walker = arguments;
751 GRegex *regex_name = g_regex_new("[-]+", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
752 GRegex *regex_ifname = g_regex_new("(?![a-zA-Z1-9_]).", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL);
753 if (regex_name && regex_ifname)
755 while (walker != NULL)
757 extcap_arg *arg = (extcap_arg *)walker->data;
758 arg->device_name = g_strdup(cb_info.ifname);
762 struct preference *pref = NULL;
764 gchar *pref_name = g_regex_replace(regex_name, arg->call, strlen(arg->call), 0, "", (GRegexMatchFlags) 0, NULL);
765 gchar *ifname_underscore = g_regex_replace(regex_ifname, cb_info.ifname, strlen(cb_info.ifname), 0, "_", (GRegexMatchFlags) 0, NULL);
766 gchar *ifname_lowercase = g_ascii_strdown(ifname_underscore, -1);
767 gchar *pref_ifname = g_strconcat(ifname_lowercase, ".", pref_name, NULL);
769 if ((pref = prefs_find_preference(dev_module, pref_ifname)) == NULL)
771 char *pref_name_for_prefs;
772 char *pref_title = wmem_strdup(wmem_epan_scope(), arg->display);
774 arg->pref_valptr = extcap_prefs_dynamic_valptr(pref_ifname, &pref_name_for_prefs);
775 /* Set an initial value if any (the string will be copied at registration) */
776 if (arg->default_complex)
778 *arg->pref_valptr = arg->default_complex->_val;
781 prefs_register_string_preference(dev_module, pref_name_for_prefs,
782 pref_title, pref_title, (const char **)arg->pref_valptr);
786 /* Been here before, restore stored value */
787 if (arg->pref_valptr == NULL)
789 arg->pref_valptr = (gchar**)g_hash_table_lookup(extcap_prefs_dynamic_vals, pref_ifname);
794 g_free(ifname_underscore);
795 g_free(ifname_lowercase);
799 walker = g_list_next(walker);
804 g_regex_unref(regex_name);
808 g_regex_unref(regex_ifname);
812 *il = g_list_append(*il, arguments);
814 /* By returning false, extcap_foreach will break on first found */
819 extcap_get_if_configuration(const char *ifname)
821 GList * arguments = NULL;
823 gchar **err_str = NULL;
825 if (extcap_if_exists(ifname))
827 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
830 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_CONFIG) );
831 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_INTERFACE) );
832 arguments = g_list_append(arguments, g_strdup(ifname) );
834 extcap_callback_info_t cb_info;
836 cb_info.err_str = err_str;
837 cb_info.ifname = ifname;
839 extcap_foreach(arguments, cb_preference, cb_info, NULL);
841 g_list_free_full(arguments, g_free);
847 static gboolean cb_reload_preference(extcap_callback_info_t cb_info)
849 GList *arguments = NULL, * walker = NULL;
850 GList **il = (GList **) cb_info.data;
852 arguments = extcap_parse_values(cb_info.output);
854 walker = g_list_first((GList *)(arguments));
855 while (walker != NULL)
857 extcap_value * val = (extcap_value *)walker->data;
858 *il = g_list_append(*il, val);
859 walker = g_list_next(walker);
861 g_list_free(arguments);
863 /* By returning false, extcap_foreach will break on first found */
868 extcap_get_if_configuration_values(const char * ifname, const char * argname, GHashTable *arguments)
872 gchar **err_str = NULL;
874 if (extcap_if_exists(ifname))
876 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
879 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_CONFIG) );
880 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_INTERFACE) );
881 args = g_list_append(args, g_strdup(ifname) );
882 args = g_list_append(args, g_strdup(EXTCAP_ARGUMENT_RELOAD_OPTION) );
883 args = g_list_append(args, g_strdup(argname) );
887 GList * keys = g_hash_table_get_keys(arguments);
890 const gchar * key_data = (const gchar *)keys->data;
891 args = g_list_append(args, g_strdup(key_data) );
892 args = g_list_append(args, g_strdup((const gchar *)g_hash_table_lookup(arguments, key_data)) );
893 keys = g_list_next(keys);
897 extcap_callback_info_t cb_info;
899 cb_info.err_str = err_str;
900 cb_info.ifname = ifname;
902 extcap_foreach(args, cb_reload_preference, cb_info, NULL);
904 g_list_free_full(args, g_free);
911 * If is_required is FALSE: returns TRUE if the extcap interface has
912 * configurable options.
913 * If is_required is TRUE: returns TRUE when the extcap interface has
914 * configurable options that required modification. (For example, when an
915 * argument is required but empty.)
918 extcap_has_configuration(const char *ifname, gboolean is_required)
920 GList *arguments = 0;
921 GList *walker = 0, * item = 0;
923 gboolean found = FALSE;
925 arguments = extcap_get_if_configuration((const char *)(ifname));
926 walker = g_list_first(arguments);
928 while (walker != NULL && !found)
930 item = g_list_first((GList *)(walker->data));
931 while (item != NULL && !found)
933 if ((extcap_arg *)(item->data) != NULL)
935 extcap_arg *arg = (extcap_arg *)(item->data);
936 /* Should required options be present, or any kind of options */
941 else if (arg->is_required)
943 const gchar *stored = NULL;
944 const gchar *defval = NULL;
946 if (arg->pref_valptr != NULL)
948 stored = *arg->pref_valptr;
951 if (arg->default_complex != NULL && arg->default_complex->_val != NULL)
953 defval = arg->default_complex->_val;
956 if (arg->is_required)
958 /* If stored and defval is identical and the argument is required,
959 * configuration is needed */
960 if (defval && stored && g_strcmp0(stored, defval) == 0)
964 else if (!defval && (!stored || !*stored))
970 if (arg->arg_type == EXTCAP_ARG_FILESELECT)
972 if (arg->fileexists && !(file_exists(defval) || file_exists(stored)))
982 walker = walker->next;
984 extcap_free_if_configuration(arguments, TRUE);
989 static gboolean cb_verify_filter(extcap_callback_info_t cb_info)
991 extcap_filter_status *status = (extcap_filter_status *)cb_info.data;
992 size_t output_size, i;
994 output_size = strlen(cb_info.output);
995 if (output_size == 0) {
996 *status = EXTCAP_FILTER_VALID;
998 *status = EXTCAP_FILTER_INVALID;
999 for (i = 0; i < output_size; i++) {
1000 if (cb_info.output[i] == '\n' || cb_info.output[i] == '\r') {
1001 cb_info.output[i] = '\0';
1005 *cb_info.err_str = g_strdup(cb_info.output);
1011 extcap_filter_status
1012 extcap_verify_capture_filter(const char *ifname, const char *filter, gchar **err_str)
1014 GList * arguments = NULL;
1015 extcap_filter_status status = EXTCAP_FILTER_UNKNOWN;
1017 if (extcap_if_exists(ifname))
1019 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
1022 arguments = g_list_append(arguments, EXTCAP_ARGUMENT_CAPTURE_FILTER);
1023 arguments = g_list_append(arguments, g_strdup(filter));
1024 arguments = g_list_append(arguments, EXTCAP_ARGUMENT_INTERFACE);
1025 arguments = g_list_append(arguments, g_strdup(ifname));
1027 extcap_callback_info_t cb_info;
1028 cb_info.data = &status;
1029 cb_info.err_str = err_str;
1030 cb_info.ifname = ifname;
1032 extcap_foreach(arguments, cb_verify_filter, cb_info, NULL);
1033 g_list_free_full(arguments, g_free);
1040 extcap_has_toolbar(const char *ifname)
1042 if (!iface_toolbar_use())
1047 GList *toolbar_list = g_hash_table_get_values (_toolbars);
1048 for (GList *walker = toolbar_list; walker; walker = walker->next)
1050 iface_toolbar *toolbar = (iface_toolbar *) walker->data;
1051 if (g_list_find_custom(toolbar->ifnames, ifname, (GCompareFunc) strcmp))
1060 void extcap_if_cleanup(capture_options *capture_opts, gchar **errormsg)
1062 interface_options *interface_opts;
1063 ws_pipe_t *pipedata;
1065 gboolean overwrite_exitcode;
1067 #define STDERR_BUFFER_SIZE 1024
1069 for (icnt = 0; icnt < capture_opts->ifaces->len; icnt++)
1071 interface_opts = &g_array_index(capture_opts->ifaces, interface_options,
1074 /* skip native interfaces */
1075 if (interface_opts->if_type != IF_EXTCAP)
1080 overwrite_exitcode = FALSE;
1082 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1083 "Extcap [%s] - Cleaning up fifo: %s; PID: %d", interface_opts->name,
1084 interface_opts->extcap_fifo, interface_opts->extcap_pid);
1086 if (interface_opts->extcap_pipe_h != INVALID_HANDLE_VALUE)
1088 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1089 "Extcap [%s] - Closing pipe", interface_opts->name);
1090 FlushFileBuffers(interface_opts->extcap_pipe_h);
1091 DisconnectNamedPipe(interface_opts->extcap_pipe_h);
1092 CloseHandle(interface_opts->extcap_pipe_h);
1093 interface_opts->extcap_pipe_h = INVALID_HANDLE_VALUE;
1095 if (interface_opts->extcap_control_in_h != INVALID_HANDLE_VALUE)
1097 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1098 "Extcap [%s] - Closing control_in pipe", interface_opts->name);
1099 FlushFileBuffers(interface_opts->extcap_control_in_h);
1100 DisconnectNamedPipe(interface_opts->extcap_control_in_h);
1101 CloseHandle(interface_opts->extcap_control_in_h);
1102 interface_opts->extcap_control_in_h = INVALID_HANDLE_VALUE;
1104 if (interface_opts->extcap_control_out_h != INVALID_HANDLE_VALUE)
1106 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1107 "Extcap [%s] - Closing control_out pipe", interface_opts->name);
1108 FlushFileBuffers(interface_opts->extcap_control_out_h);
1109 DisconnectNamedPipe(interface_opts->extcap_control_out_h);
1110 CloseHandle(interface_opts->extcap_control_out_h);
1111 interface_opts->extcap_control_out_h = INVALID_HANDLE_VALUE;
1114 if (interface_opts->extcap_fifo != NULL && file_exists(interface_opts->extcap_fifo))
1116 /* the fifo will not be freed here, but with the other capture_opts in capture_sync */
1117 ws_unlink(interface_opts->extcap_fifo);
1118 interface_opts->extcap_fifo = NULL;
1120 if (interface_opts->extcap_control_in && file_exists(interface_opts->extcap_control_in))
1122 ws_unlink(interface_opts->extcap_control_in);
1123 interface_opts->extcap_control_in = NULL;
1125 if (interface_opts->extcap_control_out && file_exists(interface_opts->extcap_control_out))
1127 ws_unlink(interface_opts->extcap_control_out);
1128 interface_opts->extcap_control_out = NULL;
1131 /* Maybe the client closed and removed fifo, but ws should check if
1132 * pid should be closed */
1133 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1134 "Extcap [%s] - Closing spawned PID: %d", interface_opts->name,
1135 interface_opts->extcap_pid);
1137 pipedata = (ws_pipe_t *) interface_opts->extcap_pipedata;
1140 if (pipedata->stderr_fd > 0 && ws_pipe_data_available(pipedata->stderr_fd))
1142 buffer = (gchar *)g_malloc0(STDERR_BUFFER_SIZE + 1);
1143 ws_read_string_from_pipe(ws_get_pipe_handle(pipedata->stderr_fd), buffer, STDERR_BUFFER_SIZE + 1);
1144 if (strlen(buffer) > 0)
1146 pipedata->stderr_msg = g_strdup_printf("%s", buffer);
1147 pipedata->exitcode = 1;
1153 /* Final child watch may not have been called */
1154 if (interface_opts->extcap_child_watch != 0)
1156 extcap_child_watch_cb(pipedata->pid, 0, capture_opts);
1157 /* it will have changed in extcap_child_watch_cb */
1158 interface_opts = &g_array_index(capture_opts->ifaces, interface_options,
1163 if (pipedata->stderr_msg != NULL)
1165 overwrite_exitcode = TRUE;
1168 if (overwrite_exitcode || pipedata->exitcode != 0)
1170 if (pipedata->stderr_msg != 0)
1172 if (*errormsg == NULL)
1174 *errormsg = g_strdup_printf("Error by extcap pipe: %s", pipedata->stderr_msg);
1178 gchar *temp = g_strconcat(*errormsg, "\nError by extcap pipe: " , pipedata->stderr_msg, NULL);
1182 g_free(pipedata->stderr_msg);
1185 pipedata->stderr_msg = NULL;
1186 pipedata->exitcode = 0;
1190 if (interface_opts->extcap_child_watch > 0)
1192 g_source_remove(interface_opts->extcap_child_watch);
1193 interface_opts->extcap_child_watch = 0;
1196 if (interface_opts->extcap_pid != WS_INVALID_PID)
1199 TerminateProcess(interface_opts->extcap_pid, 0);
1201 g_spawn_close_pid(interface_opts->extcap_pid);
1202 interface_opts->extcap_pid = WS_INVALID_PID;
1204 g_free(interface_opts->extcap_pipedata);
1205 interface_opts->extcap_pipedata = NULL;
1211 extcap_add_arg_and_remove_cb(gpointer key, gpointer value, gpointer data)
1213 GPtrArray *args = (GPtrArray *)data;
1217 g_ptr_array_add(args, g_strdup((const gchar *)key));
1221 g_ptr_array_add(args, g_strdup((const gchar *)value));
1230 void extcap_child_watch_cb(GPid pid, gint status, gpointer user_data)
1233 interface_options *interface_opts;
1234 ws_pipe_t *pipedata = NULL;
1235 capture_options *capture_opts = (capture_options *)(user_data);
1237 if (capture_opts == NULL || capture_opts->ifaces == NULL || capture_opts->ifaces->len == 0)
1242 /* Close handle to child process. */
1243 g_spawn_close_pid(pid);
1245 /* Update extcap_pid in interface options structure. */
1246 for (i = 0; i < capture_opts->ifaces->len; i++)
1248 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
1249 if (interface_opts->extcap_pid == pid)
1251 pipedata = (ws_pipe_t *)interface_opts->extcap_pipedata;
1252 if (pipedata != NULL)
1254 interface_opts->extcap_pid = WS_INVALID_PID;
1255 pipedata->exitcode = 0;
1257 if (WIFEXITED(status))
1259 if (WEXITSTATUS(status) != 0)
1261 pipedata->exitcode = WEXITSTATUS(status);
1266 pipedata->exitcode = G_SPAWN_ERROR_FAILED;
1271 pipedata->exitcode = status;
1274 if (status == 0 && pipedata->stderr_msg != NULL)
1276 pipedata->exitcode = 1;
1279 g_source_remove(interface_opts->extcap_child_watch);
1280 interface_opts->extcap_child_watch = 0;
1287 GPtrArray *extcap_prepare_arguments(interface_options *interface_opts)
1289 GPtrArray *result = NULL;
1291 if (interface_opts->if_type == IF_EXTCAP)
1293 result = g_ptr_array_new();
1295 #define add_arg(X) g_ptr_array_add(result, g_strdup(X))
1297 add_arg(interface_opts->extcap);
1298 add_arg(EXTCAP_ARGUMENT_RUN_CAPTURE);
1299 add_arg(EXTCAP_ARGUMENT_INTERFACE);
1300 add_arg(interface_opts->name);
1301 if (interface_opts->cfilter && strlen(interface_opts->cfilter) > 0)
1303 add_arg(EXTCAP_ARGUMENT_CAPTURE_FILTER);
1304 add_arg(interface_opts->cfilter);
1306 add_arg(EXTCAP_ARGUMENT_RUN_PIPE);
1307 add_arg(interface_opts->extcap_fifo);
1308 if (interface_opts->extcap_control_in)
1310 add_arg(EXTCAP_ARGUMENT_CONTROL_OUT);
1311 add_arg(interface_opts->extcap_control_in);
1313 if (interface_opts->extcap_control_out)
1315 add_arg(EXTCAP_ARGUMENT_CONTROL_IN);
1316 add_arg(interface_opts->extcap_control_out);
1318 if (interface_opts->extcap_args == NULL || g_hash_table_size(interface_opts->extcap_args) == 0)
1320 /* User did not perform interface configuration.
1322 * Check if there are any boolean flags that are set by default
1323 * and hence their argument should be added.
1328 arglist = extcap_get_if_configuration(interface_opts->name);
1329 for (elem = g_list_first(arglist); elem; elem = elem->next)
1332 extcap_arg *arg_iter;
1334 if (elem->data == NULL)
1339 arg_list = g_list_first((GList *)elem->data);
1340 while (arg_list != NULL)
1342 const gchar *stored = NULL;
1343 /* In case of boolflags only first element in arg_list is relevant. */
1344 arg_iter = (extcap_arg *)(arg_list->data);
1345 if (arg_iter->pref_valptr != NULL)
1347 stored = *arg_iter->pref_valptr;
1350 if (arg_iter->arg_type == EXTCAP_ARG_BOOLFLAG)
1352 if (extcap_complex_get_bool(arg_iter->default_complex))
1354 add_arg(arg_iter->call);
1356 else if (g_strcmp0(stored, "true") == 0)
1358 add_arg(arg_iter->call);
1363 if (stored && strlen(stored) > 0) {
1364 add_arg(arg_iter->call);
1369 arg_list = arg_list->next;
1373 extcap_free_if_configuration(arglist, TRUE);
1377 g_hash_table_foreach_remove(interface_opts->extcap_args, extcap_add_arg_and_remove_cb, result);
1387 /* call mkfifo for each extcap,
1388 * returns FALSE if there's an error creating a FIFO */
1390 extcap_init_interfaces(capture_options *capture_opts)
1393 interface_options *interface_opts;
1394 ws_pipe_t *pipedata;
1396 for (i = 0; i < capture_opts->ifaces->len; i++)
1398 GPtrArray *args = NULL;
1399 GPid pid = WS_INVALID_PID;
1401 interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
1403 /* skip native interfaces */
1404 if (interface_opts->if_type != IF_EXTCAP)
1409 /* create control pipes if having toolbar */
1410 if (extcap_has_toolbar(interface_opts->name))
1412 extcap_create_pipe(interface_opts->name, &interface_opts->extcap_control_in,
1413 EXTCAP_CONTROL_IN_PREFIX);
1415 interface_opts->extcap_control_in_h = pipe_h;
1417 extcap_create_pipe(interface_opts->name, &interface_opts->extcap_control_out,
1418 EXTCAP_CONTROL_OUT_PREFIX);
1420 interface_opts->extcap_control_out_h = pipe_h;
1424 /* create pipe for fifo */
1425 if (!extcap_create_pipe(interface_opts->name, &interface_opts->extcap_fifo,
1426 EXTCAP_PIPE_PREFIX))
1431 interface_opts->extcap_pipe_h = pipe_h;
1434 /* Create extcap call */
1435 args = extcap_prepare_arguments(interface_opts);
1437 pipedata = g_new0(ws_pipe_t, 1);
1439 pid = ws_pipe_spawn_async(pipedata, args);
1441 g_ptr_array_foreach(args, (GFunc)g_free, NULL);
1442 g_ptr_array_free(args, TRUE);
1444 if (pid == WS_INVALID_PID)
1450 ws_close(pipedata->stdin_fd);
1451 interface_opts->extcap_pid = pid;
1453 interface_opts->extcap_child_watch =
1454 g_child_watch_add(pid, extcap_child_watch_cb, (gpointer)capture_opts);
1457 /* On Windows, wait for extcap to connect to named pipe.
1458 * Some extcaps will present UAC screen to user.
1459 * 30 second timeout should be reasonable timeout for extcap to
1460 * connect to named pipe (including user interaction).
1461 * Wait on multiple object in case of extcap termination
1462 * without opening pipe.
1464 if (pid != WS_INVALID_PID)
1466 HANDLE pipe_handles[3];
1467 int num_pipe_handles = 1;
1468 pipe_handles[0] = interface_opts->extcap_pipe_h;
1470 if (extcap_has_toolbar(interface_opts->name))
1472 pipe_handles[1] = interface_opts->extcap_control_in_h;
1473 pipe_handles[2] = interface_opts->extcap_control_out_h;
1474 num_pipe_handles += 2;
1477 ws_pipe_wait_for_pipe(pipe_handles, num_pipe_handles, pid);
1481 interface_opts->extcap_pipedata = (gpointer) pipedata;
1488 gboolean extcap_create_pipe(const gchar *ifname, gchar **fifo, const gchar *pipe_prefix)
1490 gchar timestr[ 14 + 1 ];
1491 time_t current_time;
1492 gchar *pipename = NULL;
1493 SECURITY_ATTRIBUTES security;
1495 /* create pipename */
1496 current_time = time(NULL);
1498 * XXX - we trust Windows not to return a time before the Epoch here,
1499 * so we won't get a null pointer back from localtime().
1501 strftime(timestr, sizeof(timestr), "%Y%m%d%H%M%S", localtime(¤t_time));
1502 pipename = g_strconcat("\\\\.\\pipe\\", pipe_prefix, "_", ifname, "_", timestr, NULL);
1504 /* Security struct to enable Inheritable HANDLE */
1505 memset(&security, 0, sizeof(SECURITY_ATTRIBUTES));
1506 security.nLength = sizeof(SECURITY_ATTRIBUTES);
1507 security.bInheritHandle = TRUE;
1508 security.lpSecurityDescriptor = NULL;
1510 /* create a namedPipe */
1511 pipe_h = CreateNamedPipe(
1512 utf_8to16(pipename),
1513 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1514 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
1519 if (pipe_h == INVALID_HANDLE_VALUE)
1521 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "\nError creating pipe => (%d)", GetLastError());
1527 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "\nWireshark Created pipe =>(%s)", pipename);
1528 *fifo = g_strdup(pipename);
1534 gboolean extcap_create_pipe(const gchar *ifname, gchar **fifo, const gchar *pipe_prefix)
1536 gchar *temp_name = NULL;
1539 gchar *pfx = g_strconcat(pipe_prefix, "_", ifname, NULL);
1540 if ((fd = create_tempfile(&temp_name, pfx, NULL)) < 0)
1549 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
1550 "Extcap - Creating fifo: %s", temp_name);
1552 if (file_exists(temp_name))
1554 ws_unlink(temp_name);
1557 if (mkfifo(temp_name, 0600) == 0)
1559 *fifo = g_strdup(temp_name);
1566 /************* EXTCAP LOAD INTERFACE LIST ***************
1568 * The following code handles loading and reloading the interface list. It is explicitly
1569 * kept separate from the rest
1574 extcap_free_interface_info(gpointer data)
1576 extcap_info *info = (extcap_info *)data;
1578 g_free(info->basename);
1579 g_free(info->full_path);
1580 g_free(info->version);
1583 extcap_free_interfaces(info->interfaces);
1588 static extcap_info *
1589 extcap_ensure_interface(const gchar * toolname, gboolean create_if_nonexist)
1591 extcap_info * element = 0;
1593 if ( prefs.capture_no_extcap )
1599 if ( ! _loaded_interfaces )
1600 _loaded_interfaces = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_interface);
1602 element = (extcap_info *) g_hash_table_lookup(_loaded_interfaces, toolname );
1603 if ( ! element && create_if_nonexist )
1605 g_hash_table_insert(_loaded_interfaces, g_strdup(toolname), g_new0(extcap_info, 1));
1606 element = (extcap_info *) g_hash_table_lookup(_loaded_interfaces, toolname );
1613 extcap_get_tool_by_ifname(const gchar *ifname)
1615 if ( ifname && _tool_for_ifname )
1617 gchar * toolname = (gchar *)g_hash_table_lookup(_tool_for_ifname, ifname);
1619 return extcap_ensure_interface(toolname, FALSE);
1626 extcap_get_tool_info(const gchar * toolname)
1628 return extcap_ensure_interface(toolname, FALSE);
1631 static void remove_extcap_entry(gpointer entry, gpointer data _U_)
1633 extcap_interface *int_iter = (extcap_interface*)entry;
1635 if (int_iter->if_type == EXTCAP_SENTENCE_EXTCAP)
1636 extcap_free_interface(entry);
1639 static gboolean cb_load_interfaces(extcap_callback_info_t cb_info)
1641 GList * interfaces = NULL, * control_items = NULL, * walker = NULL;
1642 extcap_interface * int_iter = NULL;
1643 extcap_info * element = NULL;
1644 iface_toolbar * toolbar_entry = NULL;
1645 gchar * toolname = g_path_get_basename(cb_info.extcap);
1647 GList * interface_keys = g_hash_table_get_keys(_loaded_interfaces);
1649 /* Load interfaces from utility */
1650 interfaces = extcap_parse_interfaces(cb_info.output, &control_items);
1654 toolbar_entry = g_new0(iface_toolbar, 1);
1655 toolbar_entry->controls = control_items;
1658 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Loading interface list for %s ", cb_info.extcap);
1660 /* Seems, that there where no interfaces to be loaded */
1661 if ( ! interfaces || g_list_length(interfaces) == 0 )
1663 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Cannot load interfaces for %s", cb_info.extcap );
1664 /* Some utilities, androiddump for example, may actually don't present any interfaces, even
1665 * if the utility itself is present. In such a case, we return here, but do not return
1666 * FALSE, or otherwise further loading of other utilities will be stopped */
1667 g_list_free(interface_keys);
1672 /* Load or create the storage element for the tool */
1673 element = extcap_ensure_interface(toolname, TRUE);
1674 if ( element == NULL )
1676 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_ERROR, "Cannot store interface %s, maybe duplicate?", cb_info.extcap );
1677 g_list_foreach(interfaces, remove_extcap_entry, NULL);
1678 g_list_free(interfaces);
1679 g_list_free(interface_keys);
1684 walker = interfaces;
1686 while (walker != NULL)
1688 int_iter = (extcap_interface *)walker->data;
1690 if (int_iter->call != NULL)
1691 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Interface found %s\n", int_iter->call);
1693 /* Help is not necessarily stored with the interface, but rather with the version string.
1694 * As the version string allways comes in front of the interfaces, this ensures, that it get's
1695 * properly stored with the interface */
1696 if (int_iter->if_type == EXTCAP_SENTENCE_EXTCAP)
1698 if (int_iter->call != NULL)
1699 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Extcap [%s] ", int_iter->call);
1701 /* Only initialize values if none are set. Need to check only one element here */
1702 if ( ! element->version )
1704 element->version = g_strdup(int_iter->version);
1705 element->basename = g_strdup(toolname);
1706 element->full_path = g_strdup(cb_info.extcap);
1707 element->help = g_strdup(int_iter->help);
1710 help = int_iter->help;
1713 toolbar_entry->menu_title = g_strdup(int_iter->display);
1714 toolbar_entry->help = g_strdup(int_iter->help);
1717 walker = g_list_next(walker);
1721 /* Only interface definitions will be parsed here. help is already set by the extcap element,
1722 * which makes it necessary to have version in the list before the interfaces. This is normally
1723 * the case by design, but could be changed by separating the information in extcap-base. */
1724 if ( int_iter->if_type == EXTCAP_SENTENCE_INTERFACE )
1726 if ( g_list_find(interface_keys, int_iter->call) )
1728 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_WARNING, "Extcap interface \"%s\" is already provided by \"%s\" ",
1729 int_iter->call, (gchar *)extcap_if_executable(int_iter->call));
1730 walker = g_list_next(walker);
1734 if ((int_iter->call != NULL) && (int_iter->display))
1735 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Interface [%s] \"%s\" ", int_iter->call, int_iter->display);
1737 int_iter->extcap_path = g_strdup(cb_info.extcap);
1739 /* Only set the help, if it exists and no parsed help information is present */
1740 if ( ! int_iter->help && help )
1741 int_iter->help = g_strdup(help);
1743 element->interfaces = g_list_append(element->interfaces, int_iter);
1744 g_hash_table_insert(_tool_for_ifname, g_strdup(int_iter->call), g_strdup(toolname));
1748 if (!toolbar_entry->menu_title)
1750 toolbar_entry->menu_title = g_strdup(int_iter->display);
1752 toolbar_entry->ifnames = g_list_append(toolbar_entry->ifnames, g_strdup(int_iter->call));
1756 walker = g_list_next(walker);
1759 if (toolbar_entry && toolbar_entry->menu_title)
1761 iface_toolbar_add(toolbar_entry);
1762 extcap_iface_toolbar_add(cb_info.extcap, toolbar_entry);
1765 g_list_foreach(interfaces, remove_extcap_entry, NULL);
1766 g_list_free(interfaces);
1767 g_list_free(interface_keys);
1773 /* Handles loading of the interfaces.
1775 * A list of interfaces can be obtained by calling \ref extcap_loaded_interfaces
1778 extcap_load_interface_list(void)
1780 gchar *error = NULL;
1782 if (prefs.capture_no_extcap)
1787 // Remove existing interface toolbars here instead of in extcap_clear_interfaces()
1788 // to avoid flicker in shown toolbars when refreshing interfaces.
1789 GList *toolbar_list = g_hash_table_get_values (_toolbars);
1790 for (GList *walker = toolbar_list; walker; walker = walker->next)
1792 iface_toolbar *toolbar = (iface_toolbar *) walker->data;
1793 iface_toolbar_remove(toolbar->menu_title);
1795 g_hash_table_remove_all(_toolbars);
1797 _toolbars = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_toolbar);
1800 if (_loaded_interfaces == NULL)
1802 GList * arguments = NULL;
1803 GList * fallback = NULL;
1807 _loaded_interfaces = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_interface_info);
1808 /* Cleanup lookup table */
1809 if ( _tool_for_ifname )
1811 g_hash_table_remove_all(_tool_for_ifname);
1812 _tool_for_ifname = 0;
1814 _tool_for_ifname = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
1817 arguments = g_list_append(arguments, g_strdup(EXTCAP_ARGUMENT_LIST_INTERFACES));
1818 fallback = g_list_append(fallback, g_strdup(EXTCAP_ARGUMENT_LIST_INTERFACES));
1820 get_ws_version_number(&major, &minor, NULL);
1821 arguments = g_list_append(arguments, g_strdup_printf("%s=%d.%d", EXTCAP_ARGUMENT_VERSION, major, minor));
1823 extcap_callback_info_t cb_info;
1824 cb_info.data = NULL;
1825 cb_info.ifname = NULL;
1826 cb_info.err_str = &error;
1828 extcap_foreach(arguments, cb_load_interfaces, cb_info, fallback);
1830 g_list_free_full(fallback, g_free);
1831 g_list_free_full(arguments, g_free);
1836 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1841 * indent-tabs-mode: nil
1844 * vi: set shiftwidth=4 tabstop=8 expandtab:
1845 * :indentSize=4:tabSize=8:noTabs=true: