1/*
2 * hostapd / main()
3 * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "utils/includes.h"
10#ifndef CONFIG_NATIVE_WINDOWS
11#include <syslog.h>
12#include <grp.h>
13#endif /* CONFIG_NATIVE_WINDOWS */
14
15#include "utils/common.h"
16#include "utils/eloop.h"
17#include "utils/uuid.h"
18#include "crypto/random.h"
19#include "crypto/tls.h"
20#include "common/version.h"
21#include "drivers/driver.h"
22#include "eap_server/eap.h"
23#include "eap_server/tncs.h"
24#include "ap/hostapd.h"
25#include "ap/ap_config.h"
26#include "ap/ap_drv_ops.h"
27#include "config_file.h"
28#include "eap_register.h"
29#include "ctrl_iface.h"
30
31
32struct hapd_global {
33	void **drv_priv;
34	size_t drv_count;
35};
36
37static struct hapd_global global;
38
39
40#ifndef CONFIG_NO_HOSTAPD_LOGGER
41static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
42			      int level, const char *txt, size_t len)
43{
44	struct hostapd_data *hapd = ctx;
45	char *format, *module_str;
46	int maxlen;
47	int conf_syslog_level, conf_stdout_level;
48	unsigned int conf_syslog, conf_stdout;
49
50	maxlen = len + 100;
51	format = os_malloc(maxlen);
52	if (!format)
53		return;
54
55	if (hapd && hapd->conf) {
56		conf_syslog_level = hapd->conf->logger_syslog_level;
57		conf_stdout_level = hapd->conf->logger_stdout_level;
58		conf_syslog = hapd->conf->logger_syslog;
59		conf_stdout = hapd->conf->logger_stdout;
60	} else {
61		conf_syslog_level = conf_stdout_level = 0;
62		conf_syslog = conf_stdout = (unsigned int) -1;
63	}
64
65	switch (module) {
66	case HOSTAPD_MODULE_IEEE80211:
67		module_str = "IEEE 802.11";
68		break;
69	case HOSTAPD_MODULE_IEEE8021X:
70		module_str = "IEEE 802.1X";
71		break;
72	case HOSTAPD_MODULE_RADIUS:
73		module_str = "RADIUS";
74		break;
75	case HOSTAPD_MODULE_WPA:
76		module_str = "WPA";
77		break;
78	case HOSTAPD_MODULE_DRIVER:
79		module_str = "DRIVER";
80		break;
81	case HOSTAPD_MODULE_IAPP:
82		module_str = "IAPP";
83		break;
84	case HOSTAPD_MODULE_MLME:
85		module_str = "MLME";
86		break;
87	default:
88		module_str = NULL;
89		break;
90	}
91
92	if (hapd && hapd->conf && addr)
93		os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
94			    hapd->conf->iface, MAC2STR(addr),
95			    module_str ? " " : "", module_str ? module_str : "",
96			    txt);
97	else if (hapd && hapd->conf)
98		os_snprintf(format, maxlen, "%s:%s%s %s",
99			    hapd->conf->iface, module_str ? " " : "",
100			    module_str ? module_str : "", txt);
101	else if (addr)
102		os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
103			    MAC2STR(addr), module_str ? " " : "",
104			    module_str ? module_str : "", txt);
105	else
106		os_snprintf(format, maxlen, "%s%s%s",
107			    module_str ? module_str : "",
108			    module_str ? ": " : "", txt);
109
110	if ((conf_stdout & module) && level >= conf_stdout_level) {
111		wpa_debug_print_timestamp();
112		wpa_printf(MSG_INFO, "%s", format);
113	}
114
115#ifndef CONFIG_NATIVE_WINDOWS
116	if ((conf_syslog & module) && level >= conf_syslog_level) {
117		int priority;
118		switch (level) {
119		case HOSTAPD_LEVEL_DEBUG_VERBOSE:
120		case HOSTAPD_LEVEL_DEBUG:
121			priority = LOG_DEBUG;
122			break;
123		case HOSTAPD_LEVEL_INFO:
124			priority = LOG_INFO;
125			break;
126		case HOSTAPD_LEVEL_NOTICE:
127			priority = LOG_NOTICE;
128			break;
129		case HOSTAPD_LEVEL_WARNING:
130			priority = LOG_WARNING;
131			break;
132		default:
133			priority = LOG_INFO;
134			break;
135		}
136		syslog(priority, "%s", format);
137	}
138#endif /* CONFIG_NATIVE_WINDOWS */
139
140	os_free(format);
141}
142#endif /* CONFIG_NO_HOSTAPD_LOGGER */
143
144
145/**
146 * hostapd_driver_init - Preparate driver interface
147 */
148static int hostapd_driver_init(struct hostapd_iface *iface)
149{
150	struct wpa_init_params params;
151	size_t i;
152	struct hostapd_data *hapd = iface->bss[0];
153	struct hostapd_bss_config *conf = hapd->conf;
154	u8 *b = conf->bssid;
155	struct wpa_driver_capa capa;
156
157	if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
158		wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
159		return -1;
160	}
161
162	/* Initialize the driver interface */
163	if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
164		b = NULL;
165
166	os_memset(&params, 0, sizeof(params));
167	for (i = 0; wpa_drivers[i]; i++) {
168		if (wpa_drivers[i] != hapd->driver)
169			continue;
170
171		if (global.drv_priv[i] == NULL &&
172		    wpa_drivers[i]->global_init) {
173			global.drv_priv[i] = wpa_drivers[i]->global_init();
174			if (global.drv_priv[i] == NULL) {
175				wpa_printf(MSG_ERROR, "Failed to initialize "
176					   "driver '%s'",
177					   wpa_drivers[i]->name);
178				return -1;
179			}
180		}
181
182		params.global_priv = global.drv_priv[i];
183		break;
184	}
185	params.bssid = b;
186	params.ifname = hapd->conf->iface;
187	params.driver_params = hapd->iconf->driver_params;
188	params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
189
190	params.num_bridge = hapd->iface->num_bss;
191	params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
192	if (params.bridge == NULL)
193		return -1;
194	for (i = 0; i < hapd->iface->num_bss; i++) {
195		struct hostapd_data *bss = hapd->iface->bss[i];
196		if (bss->conf->bridge[0])
197			params.bridge[i] = bss->conf->bridge;
198	}
199
200	params.own_addr = hapd->own_addr;
201
202	hapd->drv_priv = hapd->driver->hapd_init(hapd, &params);
203	os_free(params.bridge);
204	if (hapd->drv_priv == NULL) {
205		wpa_printf(MSG_ERROR, "%s driver initialization failed.",
206			   hapd->driver->name);
207		hapd->driver = NULL;
208		return -1;
209	}
210
211	if (hapd->driver->get_capa &&
212	    hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
213		struct wowlan_triggers *triggs;
214
215		iface->drv_flags = capa.flags;
216		iface->smps_modes = capa.smps_modes;
217		iface->probe_resp_offloads = capa.probe_resp_offloads;
218		iface->extended_capa = capa.extended_capa;
219		iface->extended_capa_mask = capa.extended_capa_mask;
220		iface->extended_capa_len = capa.extended_capa_len;
221		iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
222
223		triggs = wpa_get_wowlan_triggers(conf->wowlan_triggers, &capa);
224		if (triggs && hapd->driver->set_wowlan) {
225			if (hapd->driver->set_wowlan(hapd->drv_priv, triggs))
226				wpa_printf(MSG_ERROR, "set_wowlan failed");
227		}
228		os_free(triggs);
229	}
230
231	return 0;
232}
233
234
235/**
236 * hostapd_interface_init - Read configuration file and init BSS data
237 *
238 * This function is used to parse configuration file for a full interface (one
239 * or more BSSes sharing the same radio) and allocate memory for the BSS
240 * interfaces. No actiual driver operations are started.
241 */
242static struct hostapd_iface *
243hostapd_interface_init(struct hapd_interfaces *interfaces,
244		       const char *config_fname, int debug)
245{
246	struct hostapd_iface *iface;
247	int k;
248
249	wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
250	iface = hostapd_init(interfaces, config_fname);
251	if (!iface)
252		return NULL;
253	iface->interfaces = interfaces;
254
255	for (k = 0; k < debug; k++) {
256		if (iface->bss[0]->conf->logger_stdout_level > 0)
257			iface->bss[0]->conf->logger_stdout_level--;
258	}
259
260	if (iface->conf->bss[0]->iface[0] == '\0' &&
261	    !hostapd_drv_none(iface->bss[0])) {
262		wpa_printf(MSG_ERROR, "Interface name not specified in %s",
263			   config_fname);
264		hostapd_interface_deinit_free(iface);
265		return NULL;
266	}
267
268	return iface;
269}
270
271
272/**
273 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
274 */
275static void handle_term(int sig, void *signal_ctx)
276{
277	wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
278	eloop_terminate();
279}
280
281
282#ifndef CONFIG_NATIVE_WINDOWS
283
284static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
285{
286	if (hostapd_reload_config(iface) < 0) {
287		wpa_printf(MSG_WARNING, "Failed to read new configuration "
288			   "file - continuing with old.");
289	}
290	return 0;
291}
292
293
294/**
295 * handle_reload - SIGHUP handler to reload configuration
296 */
297static void handle_reload(int sig, void *signal_ctx)
298{
299	struct hapd_interfaces *interfaces = signal_ctx;
300	wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
301		   sig);
302	hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
303}
304
305
306static void handle_dump_state(int sig, void *signal_ctx)
307{
308	/* Not used anymore - ignore signal */
309}
310#endif /* CONFIG_NATIVE_WINDOWS */
311
312
313static int hostapd_global_init(struct hapd_interfaces *interfaces,
314			       const char *entropy_file)
315{
316	int i;
317
318	os_memset(&global, 0, sizeof(global));
319
320	hostapd_logger_register_cb(hostapd_logger_cb);
321
322	if (eap_server_register_methods()) {
323		wpa_printf(MSG_ERROR, "Failed to register EAP methods");
324		return -1;
325	}
326
327	if (eloop_init()) {
328		wpa_printf(MSG_ERROR, "Failed to initialize event loop");
329		return -1;
330	}
331
332	random_init(entropy_file);
333
334#ifndef CONFIG_NATIVE_WINDOWS
335	eloop_register_signal(SIGHUP, handle_reload, interfaces);
336	eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
337#endif /* CONFIG_NATIVE_WINDOWS */
338	eloop_register_signal_terminate(handle_term, interfaces);
339
340#ifndef CONFIG_NATIVE_WINDOWS
341	openlog("hostapd", 0, LOG_DAEMON);
342#endif /* CONFIG_NATIVE_WINDOWS */
343
344	for (i = 0; wpa_drivers[i]; i++)
345		global.drv_count++;
346	if (global.drv_count == 0) {
347		wpa_printf(MSG_ERROR, "No drivers enabled");
348		return -1;
349	}
350	global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
351	if (global.drv_priv == NULL)
352		return -1;
353
354	return 0;
355}
356
357
358static void hostapd_global_deinit(const char *pid_file)
359{
360	int i;
361
362	for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
363		if (!global.drv_priv[i])
364			continue;
365		wpa_drivers[i]->global_deinit(global.drv_priv[i]);
366	}
367	os_free(global.drv_priv);
368	global.drv_priv = NULL;
369
370#ifdef EAP_SERVER_TNC
371	tncs_global_deinit();
372#endif /* EAP_SERVER_TNC */
373
374	random_deinit();
375
376	eloop_destroy();
377
378#ifndef CONFIG_NATIVE_WINDOWS
379	closelog();
380#endif /* CONFIG_NATIVE_WINDOWS */
381
382	eap_server_unregister_methods();
383
384	os_daemonize_terminate(pid_file);
385}
386
387
388static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
389			      const char *pid_file)
390{
391#ifdef EAP_SERVER_TNC
392	int tnc = 0;
393	size_t i, k;
394
395	for (i = 0; !tnc && i < ifaces->count; i++) {
396		for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
397			if (ifaces->iface[i]->bss[0]->conf->tnc) {
398				tnc++;
399				break;
400			}
401		}
402	}
403
404	if (tnc && tncs_global_init() < 0) {
405		wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
406		return -1;
407	}
408#endif /* EAP_SERVER_TNC */
409
410	if (daemonize && os_daemonize(pid_file)) {
411		wpa_printf(MSG_ERROR, "daemon: %s", strerror(errno));
412		return -1;
413	}
414
415	eloop_run();
416
417	return 0;
418}
419
420
421static void show_version(void)
422{
423	fprintf(stderr,
424		"hostapd v" VERSION_STR "\n"
425		"User space daemon for IEEE 802.11 AP management,\n"
426		"IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
427		"Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi> "
428		"and contributors\n");
429}
430
431
432static void usage(void)
433{
434	show_version();
435	fprintf(stderr,
436		"\n"
437		"usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
438		"\\\n"
439		"         [-g <global ctrl_iface>] [-G <group>] \\\n"
440		"         <configuration file(s)>\n"
441		"\n"
442		"options:\n"
443		"   -h   show this usage\n"
444		"   -d   show more debug messages (-dd for even more)\n"
445		"   -B   run daemon in the background\n"
446		"   -e   entropy file\n"
447		"   -g   global control interface path\n"
448		"   -G   group for control interfaces\n"
449		"   -P   PID file\n"
450		"   -K   include key data in debug messages\n"
451#ifdef CONFIG_DEBUG_FILE
452		"   -f   log output to debug file instead of stdout\n"
453#endif /* CONFIG_DEBUG_FILE */
454#ifdef CONFIG_DEBUG_LINUX_TRACING
455		"   -T = record to Linux tracing in addition to logging\n"
456		"        (records all messages regardless of debug verbosity)\n"
457#endif /* CONFIG_DEBUG_LINUX_TRACING */
458		"   -t   include timestamps in some debug messages\n"
459		"   -v   show hostapd version\n");
460
461	exit(1);
462}
463
464
465static const char * hostapd_msg_ifname_cb(void *ctx)
466{
467	struct hostapd_data *hapd = ctx;
468	if (hapd && hapd->iconf && hapd->iconf->bss &&
469	    hapd->iconf->num_bss > 0 && hapd->iconf->bss[0])
470		return hapd->iconf->bss[0]->iface;
471	return NULL;
472}
473
474
475static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
476					 const char *path)
477{
478	char *pos;
479	os_free(interfaces->global_iface_path);
480	interfaces->global_iface_path = os_strdup(path);
481	if (interfaces->global_iface_path == NULL)
482		return -1;
483	pos = os_strrchr(interfaces->global_iface_path, '/');
484	if (pos == NULL) {
485		wpa_printf(MSG_ERROR, "No '/' in the global control interface "
486			   "file");
487		os_free(interfaces->global_iface_path);
488		interfaces->global_iface_path = NULL;
489		return -1;
490	}
491
492	*pos = '\0';
493	interfaces->global_iface_name = pos + 1;
494
495	return 0;
496}
497
498
499static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
500					const char *group)
501{
502#ifndef CONFIG_NATIVE_WINDOWS
503	struct group *grp;
504	grp = getgrnam(group);
505	if (grp == NULL) {
506		wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
507		return -1;
508	}
509	interfaces->ctrl_iface_group = grp->gr_gid;
510#endif /* CONFIG_NATIVE_WINDOWS */
511	return 0;
512}
513
514
515#ifdef CONFIG_WPS
516static int gen_uuid(const char *txt_addr)
517{
518	u8 addr[ETH_ALEN];
519	u8 uuid[UUID_LEN];
520	char buf[100];
521
522	if (hwaddr_aton(txt_addr, addr) < 0)
523		return -1;
524
525	uuid_gen_mac_addr(addr, uuid);
526	if (uuid_bin2str(uuid, buf, sizeof(buf)) < 0)
527		return -1;
528
529	printf("%s\n", buf);
530
531	return 0;
532}
533#endif /* CONFIG_WPS */
534
535
536int main(int argc, char *argv[])
537{
538	struct hapd_interfaces interfaces;
539	int ret = 1;
540	size_t i, j;
541	int c, debug = 0, daemonize = 0;
542	char *pid_file = NULL;
543	const char *log_file = NULL;
544	const char *entropy_file = NULL;
545	char **bss_config = NULL, **tmp_bss;
546	size_t num_bss_configs = 0;
547#ifdef CONFIG_DEBUG_LINUX_TRACING
548	int enable_trace_dbg = 0;
549#endif /* CONFIG_DEBUG_LINUX_TRACING */
550
551	if (os_program_init())
552		return -1;
553
554	os_memset(&interfaces, 0, sizeof(interfaces));
555	interfaces.reload_config = hostapd_reload_config;
556	interfaces.config_read_cb = hostapd_config_read;
557	interfaces.for_each_interface = hostapd_for_each_interface;
558	interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
559	interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
560	interfaces.driver_init = hostapd_driver_init;
561	interfaces.global_iface_path = NULL;
562	interfaces.global_iface_name = NULL;
563	interfaces.global_ctrl_sock = -1;
564
565	for (;;) {
566		c = getopt(argc, argv, "b:Bde:f:hKP:Ttu:vg:G:");
567		if (c < 0)
568			break;
569		switch (c) {
570		case 'h':
571			usage();
572			break;
573		case 'd':
574			debug++;
575			if (wpa_debug_level > 0)
576				wpa_debug_level--;
577			break;
578		case 'B':
579			daemonize++;
580			break;
581		case 'e':
582			entropy_file = optarg;
583			break;
584		case 'f':
585			log_file = optarg;
586			break;
587		case 'K':
588			wpa_debug_show_keys++;
589			break;
590		case 'P':
591			os_free(pid_file);
592			pid_file = os_rel2abs_path(optarg);
593			break;
594		case 't':
595			wpa_debug_timestamp++;
596			break;
597#ifdef CONFIG_DEBUG_LINUX_TRACING
598		case 'T':
599			enable_trace_dbg = 1;
600			break;
601#endif /* CONFIG_DEBUG_LINUX_TRACING */
602		case 'v':
603			show_version();
604			exit(1);
605			break;
606		case 'g':
607			if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
608				return -1;
609			break;
610		case 'G':
611			if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
612				return -1;
613			break;
614		case 'b':
615			tmp_bss = os_realloc_array(bss_config,
616						   num_bss_configs + 1,
617						   sizeof(char *));
618			if (tmp_bss == NULL)
619				goto out;
620			bss_config = tmp_bss;
621			bss_config[num_bss_configs++] = optarg;
622			break;
623#ifdef CONFIG_WPS
624		case 'u':
625			return gen_uuid(optarg);
626#endif /* CONFIG_WPS */
627		default:
628			usage();
629			break;
630		}
631	}
632
633	if (optind == argc && interfaces.global_iface_path == NULL &&
634	    num_bss_configs == 0)
635		usage();
636
637	wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
638
639	if (log_file)
640		wpa_debug_open_file(log_file);
641	else
642		wpa_debug_setup_stdout();
643#ifdef CONFIG_DEBUG_LINUX_TRACING
644	if (enable_trace_dbg) {
645		int tret = wpa_debug_open_linux_tracing();
646		if (tret) {
647			wpa_printf(MSG_ERROR, "Failed to enable trace logging");
648			return -1;
649		}
650	}
651#endif /* CONFIG_DEBUG_LINUX_TRACING */
652
653	interfaces.count = argc - optind;
654	if (interfaces.count || num_bss_configs) {
655		interfaces.iface = os_calloc(interfaces.count + num_bss_configs,
656					     sizeof(struct hostapd_iface *));
657		if (interfaces.iface == NULL) {
658			wpa_printf(MSG_ERROR, "malloc failed");
659			return -1;
660		}
661	}
662
663	if (hostapd_global_init(&interfaces, entropy_file)) {
664		wpa_printf(MSG_ERROR, "Failed to initialize global context");
665		return -1;
666	}
667
668	/* Allocate and parse configuration for full interface files */
669	for (i = 0; i < interfaces.count; i++) {
670		interfaces.iface[i] = hostapd_interface_init(&interfaces,
671							     argv[optind + i],
672							     debug);
673		if (!interfaces.iface[i]) {
674			wpa_printf(MSG_ERROR, "Failed to initialize interface");
675			goto out;
676		}
677	}
678
679	/* Allocate and parse configuration for per-BSS files */
680	for (i = 0; i < num_bss_configs; i++) {
681		struct hostapd_iface *iface;
682		char *fname;
683
684		wpa_printf(MSG_INFO, "BSS config: %s", bss_config[i]);
685		fname = os_strchr(bss_config[i], ':');
686		if (fname == NULL) {
687			wpa_printf(MSG_ERROR,
688				   "Invalid BSS config identifier '%s'",
689				   bss_config[i]);
690			goto out;
691		}
692		*fname++ = '\0';
693		iface = hostapd_interface_init_bss(&interfaces, bss_config[i],
694						   fname, debug);
695		if (iface == NULL)
696			goto out;
697		for (j = 0; j < interfaces.count; j++) {
698			if (interfaces.iface[j] == iface)
699				break;
700		}
701		if (j == interfaces.count) {
702			struct hostapd_iface **tmp;
703			tmp = os_realloc_array(interfaces.iface,
704					       interfaces.count + 1,
705					       sizeof(struct hostapd_iface *));
706			if (tmp == NULL) {
707				hostapd_interface_deinit_free(iface);
708				goto out;
709			}
710			interfaces.iface = tmp;
711			interfaces.iface[interfaces.count++] = iface;
712		}
713	}
714
715	/*
716	 * Enable configured interfaces. Depending on channel configuration,
717	 * this may complete full initialization before returning or use a
718	 * callback mechanism to complete setup in case of operations like HT
719	 * co-ex scans, ACS, or DFS are needed to determine channel parameters.
720	 * In such case, the interface will be enabled from eloop context within
721	 * hostapd_global_run().
722	 */
723	interfaces.terminate_on_error = interfaces.count;
724	for (i = 0; i < interfaces.count; i++) {
725		if (hostapd_driver_init(interfaces.iface[i]) ||
726		    hostapd_setup_interface(interfaces.iface[i]))
727			goto out;
728	}
729
730	hostapd_global_ctrl_iface_init(&interfaces);
731
732	if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
733		wpa_printf(MSG_ERROR, "Failed to start eloop");
734		goto out;
735	}
736
737	ret = 0;
738
739 out:
740	hostapd_global_ctrl_iface_deinit(&interfaces);
741	/* Deinitialize all interfaces */
742	for (i = 0; i < interfaces.count; i++) {
743		if (!interfaces.iface[i])
744			continue;
745		interfaces.iface[i]->driver_ap_teardown =
746			!!(interfaces.iface[i]->drv_flags &
747			   WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
748		hostapd_interface_deinit_free(interfaces.iface[i]);
749	}
750	os_free(interfaces.iface);
751
752	hostapd_global_deinit(pid_file);
753	os_free(pid_file);
754
755	if (log_file)
756		wpa_debug_close_file();
757	wpa_debug_close_linux_tracing();
758
759	os_free(bss_config);
760
761	os_program_deinit();
762
763	return ret;
764}
765