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 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
36 /* Include for unlink */
43 #include <epan/prefs.h>
44 #include <epan/prefs-int.h>
46 #include <wsutil/file_util.h>
47 #include <wsutil/filesystem.h>
48 #include <wsutil/tempfile.h>
50 #include "capture_opts.h"
55 #include "extcap_parser.h"
58 static HANDLE pipe_h = NULL;
61 /* internal container, for all the extcap interfaces that have been found.
62 * will be resetted by every call to extcap_interface_list() and is being
63 * used in extcap_get_if_* as well as extcap_init_interfaces to ensure,
64 * that only extcap interfaces are being given to underlying extcap programs
66 static GHashTable *ifaces = NULL;
68 /* internal container, for all the extcap executables that have been found.
69 * will be resetted by every call to extcap_interface_list() and is being
70 * used for printing information about all extcap interfaces found
72 static GHashTable *tools = NULL;
74 /* Callback definition for extcap_foreach */
75 typedef gboolean (*extcap_cb_t)(const gchar *extcap, const gchar *ifname, gchar *output, void *data,
78 /* #define ARG_DEBUG */
80 static void extcap_debug_arguments ( extcap_arg *arg_iter );
84 extcap_if_exists(const gchar *ifname)
86 if ( !ifname || !ifaces )
89 if ( g_hash_table_lookup(ifaces, ifname) )
96 extcap_if_exists_for_extcap(const gchar *ifname, const gchar *extcap)
98 gchar *entry = (gchar *)g_hash_table_lookup(ifaces, ifname);
100 if ( entry && strcmp(entry, extcap) == 0 )
107 extcap_if_executable(const gchar *ifname)
109 return (gchar *)g_hash_table_lookup(ifaces, ifname);
113 extcap_if_add(const gchar *ifname, const gchar *extcap)
115 if ( !g_hash_table_lookup(ifaces, ifname) )
116 g_hash_table_insert(ifaces, g_strdup(ifname), g_strdup(extcap));
120 extcap_tool_add(const gchar *extcap, const extcap_interface *interface)
124 if ( !extcap || !interface )
127 toolname = g_path_get_basename(extcap);
129 if ( !g_hash_table_lookup(tools, toolname) ) {
130 extcap_info * store = (extcap_info *)g_new0(extcap_info, 1);
131 store->version = g_strdup(interface->version);
132 store->full_path = g_strdup(extcap);
133 store->basename = g_strdup(toolname);
135 g_hash_table_insert(tools, g_strdup(toolname), store);
141 /* Note: args does not need to be NULL-terminated. */
142 static void extcap_foreach(gint argc, gchar **args, extcap_cb_t cb,
143 void *cb_data, char **err_str, const char * ifname _U_) {
144 const char *dirname = get_extcap_dir();
151 gchar **dll_search_envp;
157 argv = (gchar **) g_malloc0(sizeof(gchar *) * (argc + 2));
161 * Make sure executables can find dependent DLLs and that they're *our*
162 * DLLs: https://msdn.microsoft.com/en-us/library/windows/desktop/ms682586.aspx
163 * Alternatively we could create a simple wrapper exe similar to Create
164 * Hidden Process (http://www.commandline.co.uk/chp/).
166 dll_search_envp = g_get_environ();
167 progfile_dir = g_strdup_printf("%s;%s", get_progfile_dir(), g_environ_getenv(dll_search_envp, "Path"));
168 dll_search_envp = g_environ_setenv(dll_search_envp, "Path", progfile_dir, TRUE);
169 g_free(progfile_dir);
172 if ((dir = g_dir_open(dirname, 0, NULL)) != NULL) {
173 GString *extcap_path = NULL;
175 extcap_path = g_string_new("");
176 while (keep_going && (file = g_dir_read_name(dir)) != NULL ) {
177 gchar *command_output = NULL;
178 gboolean status = FALSE;
179 gint exit_status = 0;
182 /* full path to extcap binary */
184 g_string_printf(extcap_path, "%s\\%s", dirname, file);
185 envp = dll_search_envp;
187 g_string_printf(extcap_path, "%s/%s", dirname, file);
189 if ( extcap_if_exists(ifname) && !extcap_if_exists_for_extcap(ifname, extcap_path->str ) )
193 argv[0] = g_strescape(extcap_path->str, NULL);
195 argv[0] = g_strdup(extcap_path->str);
197 for (i = 0; i < argc; ++i)
201 status = g_spawn_sync(dirname, argv, envp,
202 (GSpawnFlags) 0, NULL, NULL,
203 &command_output, NULL, &exit_status, NULL);
205 if (status && exit_status == 0)
206 keep_going = cb(extcap_path->str, ifname, command_output, cb_data, err_str);
209 g_free(command_output);
213 g_string_free(extcap_path, TRUE);
217 g_strfreev(dll_search_envp);
222 static gboolean dlt_cb(const gchar *extcap _U_, const gchar *ifname _U_, gchar *output, void *data,
224 extcap_token_sentence *tokens;
225 extcap_dlt *dlts, *dlt_iter, *next;
226 if_capabilities_t *caps;
227 GList *linktype_list = NULL;
228 data_link_info_t *data_link_info;
230 tokens = extcap_tokenize_sentences(output);
231 extcap_parse_dlts(tokens, &dlts);
233 extcap_free_tokenized_sentence_list(tokens);
235 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap pipe %s ", extcap);
238 * Allocate the interface capabilities structure.
240 caps = (if_capabilities_t *) g_malloc(sizeof *caps);
241 caps->can_set_rfmon = FALSE;
244 while (dlt_iter != NULL ) {
245 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
246 " DLT %d name=\"%s\" display=\"%s\" ", dlt_iter->number,
247 dlt_iter->name, dlt_iter->display);
249 data_link_info = g_new(data_link_info_t, 1);
250 data_link_info->dlt = dlt_iter->number;
251 data_link_info->name = g_strdup(dlt_iter->name);
252 data_link_info->description = g_strdup(dlt_iter->display);
253 linktype_list = g_list_append(linktype_list, data_link_info);
254 dlt_iter = dlt_iter->next_dlt;
257 /* Check to see if we built a list */
258 if (linktype_list != NULL && data != NULL) {
259 caps->data_link_types = linktype_list;
260 *(if_capabilities_t **) data = caps;
263 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " returned no DLTs");
264 *err_str = g_strdup("Extcap returned no DLTs");
270 while (dlt_iter != NULL ) {
271 next = dlt_iter->next_dlt;
272 extcap_free_dlt(dlt_iter);
280 extcap_get_if_dlts(const gchar *ifname, char **err_str) {
283 if_capabilities_t *caps = NULL;
285 if (ifname != NULL && err_str != NULL)
288 if ( extcap_if_exists(ifname) )
290 argv[0] = g_strdup(EXTCAP_ARGUMENT_LIST_DLTS);
291 argv[1] = g_strdup(EXTCAP_ARGUMENT_INTERFACE);
292 argv[2] = g_strdup(ifname);
296 extcap_foreach(3, argv, dlt_cb, &caps, err_str, ifname);
298 for (i = 0; i < 3; ++i)
305 static gboolean interfaces_cb(const gchar *extcap, const gchar *ifname _U_, gchar *output, void *data,
306 char **err_str _U_) {
307 GList **il = (GList **) data;
308 extcap_token_sentence *tokens;
309 extcap_interface *interfaces, *int_iter; /*, *next; */
312 tokens = extcap_tokenize_sentences(output);
313 extcap_parse_interfaces(tokens, &interfaces);
315 extcap_free_tokenized_sentence_list(tokens);
317 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap pipe %s ", extcap);
319 int_iter = interfaces;
320 while (int_iter != NULL ) {
321 if ( int_iter->if_type == EXTCAP_SENTENCE_INTERFACE && extcap_if_exists(int_iter->call) )
323 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_WARNING, "Extcap interface \"%s\" is already provided by \"%s\" ",
324 int_iter->call, (gchar *)extcap_if_executable(int_iter->call) );
325 int_iter = int_iter->next_interface;
329 if ( int_iter->if_type == EXTCAP_SENTENCE_INTERFACE )
330 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Interface [%s] \"%s\" ",
331 int_iter->call, int_iter->display);
332 else if ( int_iter->if_type == EXTCAP_SENTENCE_EXTCAP )
333 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, " Extcap [%s] ", int_iter->call);
335 if ( int_iter->if_type == EXTCAP_SENTENCE_INTERFACE ) {
336 if_info = g_new0(if_info_t, 1);
337 if_info->name = g_strdup(int_iter->call);
338 if_info->friendly_name = g_strdup(int_iter->display);
340 if_info->type = IF_EXTCAP;
342 if_info->extcap = g_strdup(extcap);
343 *il = g_list_append(*il, if_info);
345 extcap_if_add(int_iter->call, extcap);
348 /* Call for interfaces and tools alike. Multiple calls (because a tool has multiple
349 * interfaces) are handled internally */
350 extcap_tool_add(extcap, int_iter);
352 int_iter = int_iter->next_interface;
354 extcap_free_interface(interfaces);
360 if_info_compare(gconstpointer a, gconstpointer b)
363 if_info_t * if_a = (if_info_t *)a;
364 if_info_t * if_b = (if_info_t *)b;
366 if ( (comp = g_strcmp0(if_a->name, if_b->name)) == 0 )
367 return g_strcmp0(if_a->friendly_name, if_b->friendly_name);
373 extcap_tools_list(void) {
374 if ( tools == NULL || g_hash_table_size(tools) == 0 )
375 extcap_interface_list(NULL);
381 extcap_free_info (gpointer data) {
382 extcap_info * info = (extcap_info *)data;
384 g_free (info->basename);
385 g_free (info->full_path);
386 g_free (info->version);
391 extcap_interface_list(char **err_str) {
399 /* ifaces is used as cache, do not destroy its contents when
400 * returning or no extcap interfaces can be queried for options */
402 ifaces = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
404 g_hash_table_remove_all(ifaces);
407 tools = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, extcap_free_info);
409 g_hash_table_remove_all(tools);
411 argv = g_strdup(EXTCAP_ARGUMENT_LIST_INTERFACES);
415 extcap_foreach(1, &argv, interfaces_cb, &ret, err_str, NULL);
419 return g_list_sort ( ret, if_info_compare );
422 static void extcap_free_arg_elem(gpointer data, gpointer user_data _U_) {
423 extcap_free_arg((extcap_arg *) data);
427 void extcap_register_preferences(void)
429 GList * interfaces = NULL;
431 module_t * dev_module = prefs_find_module("extcap");
436 if ( ! ifaces || g_hash_table_size(ifaces) == 0 )
437 extcap_interface_list(NULL);
439 interfaces = g_hash_table_get_keys(ifaces);
441 while ( interfaces ) {
442 extcap_get_if_configuration((gchar *)interfaces->data);
444 interfaces = g_list_next(interfaces);
448 static void extcap_free_if_configuration(GList *list)
452 for (elem = g_list_first(list); elem; elem = elem->next)
454 if (elem->data != NULL) {
455 /* g_list_free_full() only exists since 2.28. */
456 sl = g_list_first((GList *)elem->data);
457 g_list_foreach(sl, (GFunc)extcap_free_arg_elem, NULL);
464 gchar * extcap_settings_key(const gchar * ifname, const gchar * setting)
466 gchar * setting_nohyphen;
467 gchar * ifname_underscore;
468 gchar * ifname_lower;
470 GRegex * regex = g_regex_new ("(?![a-zA-Z1-9_]).", (GRegexCompileFlags) 0, (GRegexMatchFlags) 0, NULL );
476 g_regex_replace_literal(regex, setting, strlen(setting), 0,
477 "", (GRegexMatchFlags) 0, NULL );
479 g_regex_replace_literal(regex, ifname, strlen(ifname), 0,
480 "_", (GRegexMatchFlags) 0, NULL );
481 ifname_lower = g_utf8_strdown(ifname_underscore, -1);
482 key = g_strconcat(ifname_lower, ".", setting_nohyphen, NULL);
484 g_free(setting_nohyphen);
485 g_free(ifname_underscore);
486 g_free(ifname_lower);
487 g_regex_unref(regex);
492 static gboolean search_cb(const gchar *extcap _U_, const gchar *ifname _U_, gchar *output, void *data,
493 char **err_str _U_) {
494 extcap_token_sentence *tokens = NULL;
495 GList *arguments = NULL;
496 GList **il = (GList **) data;
497 module_t * dev_module = NULL;
499 tokens = extcap_tokenize_sentences(output);
500 arguments = extcap_parse_args(tokens);
502 extcap_free_tokenized_sentence_list(tokens);
505 extcap_debug_arguments ( arguments );
508 dev_module = prefs_find_module("extcap");
511 GList * walker = arguments;
513 while ( walker != NULL ) {
514 extcap_arg * arg = (extcap_arg *)walker->data;
517 struct preference * pref = NULL;
518 gchar * pref_ifname = extcap_settings_key(ifname, arg->call);
520 if ( ( pref = prefs_find_preference(dev_module, pref_ifname) ) == NULL ) {
521 /* Set an initial value */
522 if ( ! arg->storeval && arg->default_complex )
523 arg->storeval = g_strdup(arg->default_complex->_val);
525 prefs_register_string_preference(dev_module, g_strdup(pref_ifname),
526 arg->display, arg->display, (const gchar **)&(arg->storeval));
528 /* Been here before, restore stored value */
529 if (! arg->storeval && pref->varp.string)
530 arg->storeval = g_strdup(*(pref->varp.string));
535 walker = g_list_next(walker);
539 *il = g_list_append(*il, arguments);
541 /* By returning false, extcap_foreach will break on first found */
546 extcap_get_if_configuration(const char * ifname) {
549 gchar **err_str = NULL;
552 if ( extcap_if_exists(ifname) )
554 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "Extcap path %s",
557 argv[0] = g_strdup(EXTCAP_ARGUMENT_CONFIG);
558 argv[1] = g_strdup(EXTCAP_ARGUMENT_INTERFACE);
559 argv[2] = g_strdup(ifname);
561 extcap_foreach(3, argv, search_cb, &ret, err_str, ifname);
563 for (i = 0; i < 3; i++)
571 extcap_has_configuration(const char * ifname, gboolean is_required) {
572 GList * arguments = 0;
573 GList * walker = 0, * item = 0;
575 gboolean found = FALSE;
577 arguments = extcap_get_if_configuration((const char *)( ifname ) );
578 walker = g_list_first(arguments);
580 while ( walker != NULL && ! found ) {
581 item = g_list_first((GList *)(walker->data));
582 while ( item != NULL && ! found ) {
583 if ( (extcap_arg *)(item->data) != NULL ) {
584 extcap_arg * arg = (extcap_arg *)(item->data);
585 /* Should required options be present, or any kind of options */
588 else if ( arg->is_required ) {
589 gchar * stored = NULL;
590 gchar * defval = NULL;
592 if ( arg->storeval != NULL )
593 stored = arg->storeval;
595 if ( arg->default_complex != NULL && arg->default_complex->_val != NULL )
596 defval = arg->default_complex->_val;
598 if ( arg->is_required ) {
599 /* If stored and defval is identical and the argument is required,
600 * configuration is needed */
601 if ( defval && stored && g_strcmp0(stored, defval) == 0 )
603 else if ( ! defval && (!stored || strlen(g_strchomp(stored)) <= (size_t)0) )
607 if ( arg->arg_type == EXTCAP_ARG_FILESELECT ) {
608 if ( arg->fileexists && ! ( file_exists(defval) || file_exists(stored) ) )
616 walker = walker->next;
618 extcap_free_if_configuration(arguments);
623 void extcap_cleanup(capture_options * capture_opts) {
624 interface_options interface_opts;
627 for (icnt = 0; icnt < capture_opts->ifaces->len; icnt++) {
628 interface_opts = g_array_index(capture_opts->ifaces, interface_options,
631 /* skip native interfaces */
632 if (interface_opts.if_type != IF_EXTCAP)
635 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
636 "Extcap [%s] - Cleaning up fifo: %s; PID: %d", interface_opts.name,
637 interface_opts.extcap_fifo, interface_opts.extcap_pid);
641 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
642 "Extcap [%s] - Closing pipe", interface_opts.name);
643 FlushFileBuffers(pipe_h);
644 DisconnectNamedPipe(pipe_h);
648 if (interface_opts.extcap_fifo != NULL && file_exists(interface_opts.extcap_fifo))
650 /* the fifo will not be freed here, but with the other capture_opts in capture_sync */
651 ws_unlink(interface_opts.extcap_fifo);
652 interface_opts.extcap_fifo = NULL;
655 /* Maybe the client closed and removed fifo, but ws should check if
656 * pid should be closed */
657 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
658 "Extcap [%s] - Closing spawned PID: %d", interface_opts.name,
659 interface_opts.extcap_pid);
661 if (interface_opts.extcap_pid != INVALID_EXTCAP_PID)
664 TerminateProcess(interface_opts.extcap_pid, 0);
666 g_spawn_close_pid(interface_opts.extcap_pid);
667 interface_opts.extcap_pid = INVALID_EXTCAP_PID;
670 /* Make sure modified interface_opts is saved in capture_opts. */
671 capture_opts->ifaces = g_array_remove_index(capture_opts->ifaces, icnt);
672 g_array_insert_val(capture_opts->ifaces, icnt, interface_opts);
677 extcap_add_arg_and_remove_cb(gpointer key, gpointer value, gpointer data) {
678 GPtrArray *args = (GPtrArray *)data;
682 g_ptr_array_add(args, g_strdup((const gchar*)key));
685 g_ptr_array_add(args, g_strdup((const gchar*)value));
693 static void extcap_child_watch_cb(GPid pid, gint status _U_, gpointer user_data)
696 interface_options interface_opts;
697 capture_options *capture_opts = (capture_options *)user_data;
699 /* Close handle to child process. */
700 g_spawn_close_pid(pid);
702 /* Update extcap_pid in interface options structure. */
703 for (i = 0; i < capture_opts->ifaces->len; i++)
705 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
706 if (interface_opts.extcap_pid == pid)
708 interface_opts.extcap_pid = INVALID_EXTCAP_PID;
709 g_source_remove(interface_opts.extcap_child_watch);
710 interface_opts.extcap_child_watch = 0;
712 capture_opts->ifaces = g_array_remove_index(capture_opts->ifaces, i);
713 g_array_insert_val(capture_opts->ifaces, i, interface_opts);
719 /* call mkfifo for each extcap,
720 * returns FALSE if there's an error creating a FIFO */
722 extcap_init_interfaces(capture_options *capture_opts)
725 interface_options interface_opts;
727 for (i = 0; i < capture_opts->ifaces->len; i++)
729 GPtrArray *args = NULL;
730 GPid pid = INVALID_EXTCAP_PID;
734 interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
736 /* skip native interfaces */
737 if (interface_opts.if_type != IF_EXTCAP )
740 /* create pipe for fifo */
741 if ( ! extcap_create_pipe ( &interface_opts.extcap_fifo ) )
744 /* Create extcap call */
745 args = g_ptr_array_new();
746 #define add_arg(X) g_ptr_array_add(args, g_strdup(X))
748 add_arg(interface_opts.extcap);
749 add_arg(EXTCAP_ARGUMENT_RUN_CAPTURE);
750 add_arg(EXTCAP_ARGUMENT_INTERFACE);
751 add_arg(interface_opts.name);
752 if (interface_opts.cfilter && strlen(interface_opts.cfilter) > 0) {
753 add_arg(EXTCAP_ARGUMENT_CAPTURE_FILTER);
754 add_arg(interface_opts.cfilter);
756 add_arg(EXTCAP_ARGUMENT_RUN_PIPE);
757 add_arg(interface_opts.extcap_fifo);
758 if (interface_opts.extcap_args == NULL || g_hash_table_size(interface_opts.extcap_args) == 0)
760 /* User did not perform interface configuration.
762 * Check if there are any boolean flags that are set by default
763 * and hence their argument should be added.
768 arglist = extcap_get_if_configuration(interface_opts.name);
769 for (elem = g_list_first(arglist); elem; elem = elem->next)
772 extcap_arg *arg_iter;
774 if (elem->data == NULL)
779 arg_list = g_list_first((GList *)elem->data);
780 while (arg_list != NULL) {
781 gchar * stored = NULL, * defval = NULL;
782 /* In case of boolflags only first element in arg_list is relevant. */
783 arg_iter = (extcap_arg*) (arg_list->data);
784 if ( arg_iter->storeval != NULL )
785 stored = arg_iter->storeval;
787 if ( arg_iter->default_complex != NULL && arg_iter->default_complex->_val != NULL )
788 defval = arg_iter->default_complex->_val;
790 /* Different data in storage then set for default */
791 if ( g_strcmp0(stored, defval) != 0 ) {
792 if ( arg_iter->arg_type == EXTCAP_ARG_BOOLFLAG ) {
793 if ( g_strcmp0(stored, "true") == 0 )
794 add_arg(arg_iter->call);
796 gchar * call = g_strconcat(arg_iter->call, " ", stored, NULL);
800 } else if (arg_iter->arg_type == EXTCAP_ARG_BOOLFLAG) {
801 if (extcap_complex_get_bool(arg_iter->default_complex))
802 add_arg(arg_iter->call);
805 arg_list = arg_list->next;
809 extcap_free_if_configuration(arglist);
813 g_hash_table_foreach_remove(interface_opts.extcap_args, extcap_add_arg_and_remove_cb, args);
818 /* Dump commandline parameters sent to extcap. */
819 for (tmp = (gchar **)args->pdata, tmp_i = 0; *tmp && **tmp; ++tmp_i, ++tmp)
821 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "argv[%d]: %s", tmp_i, *tmp);
824 /* Wireshark for windows crashes here sometimes *
825 * Access violation reading location 0x... */
826 g_spawn_async(NULL, (gchar **)args->pdata, NULL,
827 (GSpawnFlags) G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL,
830 g_ptr_array_foreach(args, (GFunc)g_free, NULL);
831 g_ptr_array_free(args, TRUE);
832 interface_opts.extcap_pid = pid;
833 interface_opts.extcap_child_watch =
834 g_child_watch_add(pid, extcap_child_watch_cb, (gpointer)capture_opts);
835 capture_opts->ifaces = g_array_remove_index(capture_opts->ifaces, i);
836 g_array_insert_val(capture_opts->ifaces, i, interface_opts);
839 /* On Windows, wait for extcap to connect to named pipe.
840 * Some extcaps will present UAC screen to user.
841 * 30 second timeout should be reasonable timeout for extcap to
842 * connect to named pipe (including user interaction).
843 * Wait on multiple object in case of extcap termination
844 * without opening pipe.
846 * Minimum supported version of Windows: XP / Server 2003.
848 if (pid != INVALID_EXTCAP_PID)
854 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
856 ConnectNamedPipe(pipe_h, &ov);
857 handles[0] = ov.hEvent;
860 if (GetLastError() == ERROR_PIPE_CONNECTED)
862 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "extcap connected to pipe");
866 dw = WaitForMultipleObjects(2, handles, FALSE, 30000);
867 if (dw == WAIT_OBJECT_0)
869 /* ConnectNamedPipe finished. */
872 code = GetLastError();
873 if (code == ERROR_IO_PENDING)
876 if (!GetOverlappedResult(ov.hEvent, &ov, &dummy, TRUE))
878 code = GetLastError();
882 code = ERROR_SUCCESS;
886 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "ConnectNamedPipe code: %d", code);
888 else if (dw == (WAIT_OBJECT_0 + 1))
890 /* extcap process terminated. */
891 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "extcap terminated without connecting to pipe!");
893 else if (dw == WAIT_TIMEOUT)
895 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "extcap didn't connect to pipe within 30 seconds!");
899 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG, "WaitForMultipleObjects returned 0x%08X. Error %d", dw, GetLastError());
903 CloseHandle(ov.hEvent);
912 /* called by capture_sync to get the CreatNamedPipe handle*/
914 extcap_get_win32_handle()
920 gboolean extcap_create_pipe(char ** fifo)
923 gchar timestr[ 14+1 ];
926 gchar *pipename = NULL;
928 SECURITY_ATTRIBUTES security;
929 /* create pipename */
930 current_time = time(NULL);
931 strftime(timestr, sizeof(timestr), "%Y%m%d%H%M%S", localtime(¤t_time));
932 pipename = g_strconcat ( "\\\\.\\pipe\\", EXTCAP_PIPE_PREFIX, "_", timestr, NULL );
934 /* Security struct to enable Inheritable HANDLE */
935 memset(&security, 0, sizeof(SECURITY_ATTRIBUTES));
936 security.nLength = sizeof(SECURITY_ATTRIBUTES);
937 security.bInheritHandle = TRUE;
938 security.lpSecurityDescriptor = NULL;
940 /* create a namedPipe*/
941 pipe_h = CreateNamedPipe(
943 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
944 PIPE_TYPE_MESSAGE| PIPE_READMODE_MESSAGE | PIPE_WAIT,
949 if (pipe_h == INVALID_HANDLE_VALUE)
951 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,"\nError creating pipe => (%d)", GetLastError());
956 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,"\nWireshark Created pipe =>(%s)",pipename);
957 *fifo = g_strdup(pipename);
960 gchar *temp_name = NULL;
963 if ((fd = create_tempfile(&temp_name, EXTCAP_PIPE_PREFIX)) < 0 )
968 g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
969 "Extcap - Creating fifo: %s", temp_name);
971 if ( file_exists(temp_name) )
972 ws_unlink(temp_name);
974 if (mkfifo(temp_name, 0600) == 0)
975 *fifo = g_strdup(temp_name);
982 void extcap_debug_arguments ( extcap_arg *arg_iter )
984 extcap_value *v = NULL;
985 GList *walker = NULL;
987 printf("debug - parser dump\n");
988 while (arg_iter != NULL) {
989 printf("ARG %d call=%s display=\"%s\" type=", arg_iter->arg_num, arg_iter->call, arg_iter->display);
991 switch (arg_iter->arg_type) {
992 case EXTCAP_ARG_INTEGER:
995 case EXTCAP_ARG_UNSIGNED:
996 printf("unsigned\n");
998 case EXTCAP_ARG_LONG:
1001 case EXTCAP_ARG_DOUBLE:
1004 case EXTCAP_ARG_BOOLEAN:
1005 printf("boolean\n");
1007 case EXTCAP_ARG_MENU:
1010 case EXTCAP_ARG_RADIO:
1013 case EXTCAP_ARG_SELECTOR:
1014 printf("selctor\n");
1016 case EXTCAP_ARG_STRING:
1017 printf ( "string\n" );
1019 case EXTCAP_ARG_PASSWORD:
1020 printf ( "PASSWORD\n" );
1022 case EXTCAP_ARG_MULTICHECK:
1023 printf ( "unknown\n" );
1025 case EXTCAP_ARG_UNKNOWN:
1026 printf ( "unknown\n" );
1030 if (arg_iter->range_start != NULL && arg_iter->range_end != NULL) {
1031 printf("\tRange: ");
1032 extcap_printf_complex(arg_iter->range_start);
1034 extcap_printf_complex(arg_iter->range_end);
1038 for ( walker = g_list_first ( arg_iter->value_list ); walker; walker = walker->next )
1040 v = (extcap_value *)walker->data;
1043 printf("\tcall=\"%p\" display=\"%p\"\n", v->call, v->display);
1044 printf("\tcall=\"%s\" display=\"%s\"\n", v->call, v->display);
1047 arg_iter = arg_iter->next_arg;
1054 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1059 * indent-tabs-mode: nil
1062 * vi: set shiftwidth=4 tabstop=8 expandtab:
1063 * :indentSize=4:tabSize=8:noTabs=true: