xref: /netbsd-src/external/bsd/wpa/dist/hostapd/main.c (revision d909946ca08dceb44d7d0f22ec9488679695d976)
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 
32 struct hapd_global {
33 	void **drv_priv;
34 	size_t drv_count;
35 };
36 
37 static struct hapd_global global;
38 
39 
40 #ifndef CONFIG_NO_HOSTAPD_LOGGER
41 static 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  */
148 static 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] =
174 				wpa_drivers[i]->global_init(iface->interfaces);
175 			if (global.drv_priv[i] == NULL) {
176 				wpa_printf(MSG_ERROR, "Failed to initialize "
177 					   "driver '%s'",
178 					   wpa_drivers[i]->name);
179 				return -1;
180 			}
181 		}
182 
183 		params.global_priv = global.drv_priv[i];
184 		break;
185 	}
186 	params.bssid = b;
187 	params.ifname = hapd->conf->iface;
188 	params.driver_params = hapd->iconf->driver_params;
189 	params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
190 
191 	params.num_bridge = hapd->iface->num_bss;
192 	params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
193 	if (params.bridge == NULL)
194 		return -1;
195 	for (i = 0; i < hapd->iface->num_bss; i++) {
196 		struct hostapd_data *bss = hapd->iface->bss[i];
197 		if (bss->conf->bridge[0])
198 			params.bridge[i] = bss->conf->bridge;
199 	}
200 
201 	params.own_addr = hapd->own_addr;
202 
203 	hapd->drv_priv = hapd->driver->hapd_init(hapd, &params);
204 	os_free(params.bridge);
205 	if (hapd->drv_priv == NULL) {
206 		wpa_printf(MSG_ERROR, "%s driver initialization failed.",
207 			   hapd->driver->name);
208 		hapd->driver = NULL;
209 		return -1;
210 	}
211 
212 	if (hapd->driver->get_capa &&
213 	    hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
214 		struct wowlan_triggers *triggs;
215 
216 		iface->drv_flags = capa.flags;
217 		iface->smps_modes = capa.smps_modes;
218 		iface->probe_resp_offloads = capa.probe_resp_offloads;
219 		iface->extended_capa = capa.extended_capa;
220 		iface->extended_capa_mask = capa.extended_capa_mask;
221 		iface->extended_capa_len = capa.extended_capa_len;
222 		iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
223 
224 		triggs = wpa_get_wowlan_triggers(conf->wowlan_triggers, &capa);
225 		if (triggs && hapd->driver->set_wowlan) {
226 			if (hapd->driver->set_wowlan(hapd->drv_priv, triggs))
227 				wpa_printf(MSG_ERROR, "set_wowlan failed");
228 		}
229 		os_free(triggs);
230 	}
231 
232 	return 0;
233 }
234 
235 
236 /**
237  * hostapd_interface_init - Read configuration file and init BSS data
238  *
239  * This function is used to parse configuration file for a full interface (one
240  * or more BSSes sharing the same radio) and allocate memory for the BSS
241  * interfaces. No actiual driver operations are started.
242  */
243 static struct hostapd_iface *
244 hostapd_interface_init(struct hapd_interfaces *interfaces,
245 		       const char *config_fname, int debug)
246 {
247 	struct hostapd_iface *iface;
248 	int k;
249 
250 	wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
251 	iface = hostapd_init(interfaces, config_fname);
252 	if (!iface)
253 		return NULL;
254 	iface->interfaces = interfaces;
255 
256 	for (k = 0; k < debug; k++) {
257 		if (iface->bss[0]->conf->logger_stdout_level > 0)
258 			iface->bss[0]->conf->logger_stdout_level--;
259 	}
260 
261 	if (iface->conf->bss[0]->iface[0] == '\0' &&
262 	    !hostapd_drv_none(iface->bss[0])) {
263 		wpa_printf(MSG_ERROR, "Interface name not specified in %s",
264 			   config_fname);
265 		hostapd_interface_deinit_free(iface);
266 		return NULL;
267 	}
268 
269 	return iface;
270 }
271 
272 
273 /**
274  * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
275  */
276 static void handle_term(int sig, void *signal_ctx)
277 {
278 	wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
279 	eloop_terminate();
280 }
281 
282 
283 #ifndef CONFIG_NATIVE_WINDOWS
284 
285 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
286 {
287 	if (hostapd_reload_config(iface) < 0) {
288 		wpa_printf(MSG_WARNING, "Failed to read new configuration "
289 			   "file - continuing with old.");
290 	}
291 	return 0;
292 }
293 
294 
295 /**
296  * handle_reload - SIGHUP handler to reload configuration
297  */
298 static void handle_reload(int sig, void *signal_ctx)
299 {
300 	struct hapd_interfaces *interfaces = signal_ctx;
301 	wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
302 		   sig);
303 	hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
304 }
305 
306 
307 static void handle_dump_state(int sig, void *signal_ctx)
308 {
309 	/* Not used anymore - ignore signal */
310 }
311 #endif /* CONFIG_NATIVE_WINDOWS */
312 
313 
314 static int hostapd_global_init(struct hapd_interfaces *interfaces,
315 			       const char *entropy_file)
316 {
317 	int i;
318 
319 	os_memset(&global, 0, sizeof(global));
320 
321 	hostapd_logger_register_cb(hostapd_logger_cb);
322 
323 	if (eap_server_register_methods()) {
324 		wpa_printf(MSG_ERROR, "Failed to register EAP methods");
325 		return -1;
326 	}
327 
328 	if (eloop_init()) {
329 		wpa_printf(MSG_ERROR, "Failed to initialize event loop");
330 		return -1;
331 	}
332 
333 	random_init(entropy_file);
334 
335 #ifndef CONFIG_NATIVE_WINDOWS
336 	eloop_register_signal(SIGHUP, handle_reload, interfaces);
337 	eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
338 #endif /* CONFIG_NATIVE_WINDOWS */
339 	eloop_register_signal_terminate(handle_term, interfaces);
340 
341 #ifndef CONFIG_NATIVE_WINDOWS
342 	openlog("hostapd", 0, LOG_DAEMON);
343 #endif /* CONFIG_NATIVE_WINDOWS */
344 
345 	for (i = 0; wpa_drivers[i]; i++)
346 		global.drv_count++;
347 	if (global.drv_count == 0) {
348 		wpa_printf(MSG_ERROR, "No drivers enabled");
349 		return -1;
350 	}
351 	global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
352 	if (global.drv_priv == NULL)
353 		return -1;
354 
355 	return 0;
356 }
357 
358 
359 static void hostapd_global_deinit(const char *pid_file)
360 {
361 	int i;
362 
363 	for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
364 		if (!global.drv_priv[i])
365 			continue;
366 		wpa_drivers[i]->global_deinit(global.drv_priv[i]);
367 	}
368 	os_free(global.drv_priv);
369 	global.drv_priv = NULL;
370 
371 #ifdef EAP_SERVER_TNC
372 	tncs_global_deinit();
373 #endif /* EAP_SERVER_TNC */
374 
375 	random_deinit();
376 
377 	eloop_destroy();
378 
379 #ifndef CONFIG_NATIVE_WINDOWS
380 	closelog();
381 #endif /* CONFIG_NATIVE_WINDOWS */
382 
383 	eap_server_unregister_methods();
384 
385 	os_daemonize_terminate(pid_file);
386 }
387 
388 
389 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
390 			      const char *pid_file)
391 {
392 #ifdef EAP_SERVER_TNC
393 	int tnc = 0;
394 	size_t i, k;
395 
396 	for (i = 0; !tnc && i < ifaces->count; i++) {
397 		for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
398 			if (ifaces->iface[i]->bss[0]->conf->tnc) {
399 				tnc++;
400 				break;
401 			}
402 		}
403 	}
404 
405 	if (tnc && tncs_global_init() < 0) {
406 		wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
407 		return -1;
408 	}
409 #endif /* EAP_SERVER_TNC */
410 
411 	if (daemonize) {
412 		if (os_daemonize(pid_file)) {
413 			wpa_printf(MSG_ERROR, "daemon: %s", strerror(errno));
414 			return -1;
415 		}
416 		if (eloop_sock_requeue()) {
417 			wpa_printf(MSG_ERROR, "eloop_sock_requeue: %s",
418 				   strerror(errno));
419 			return -1;
420 		}
421 	}
422 
423 	eloop_run();
424 
425 	return 0;
426 }
427 
428 
429 static void show_version(void)
430 {
431 	fprintf(stderr,
432 		"hostapd v" VERSION_STR "\n"
433 		"User space daemon for IEEE 802.11 AP management,\n"
434 		"IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
435 		"Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi> "
436 		"and contributors\n");
437 }
438 
439 
440 static void usage(void)
441 {
442 	show_version();
443 	fprintf(stderr,
444 		"\n"
445 		"usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
446 		"\\\n"
447 		"         [-g <global ctrl_iface>] [-G <group>] \\\n"
448 		"         <configuration file(s)>\n"
449 		"\n"
450 		"options:\n"
451 		"   -h   show this usage\n"
452 		"   -d   show more debug messages (-dd for even more)\n"
453 		"   -B   run daemon in the background\n"
454 		"   -e   entropy file\n"
455 		"   -g   global control interface path\n"
456 		"   -G   group for control interfaces\n"
457 		"   -P   PID file\n"
458 		"   -K   include key data in debug messages\n"
459 #ifdef CONFIG_DEBUG_FILE
460 		"   -f   log output to debug file instead of stdout\n"
461 #endif /* CONFIG_DEBUG_FILE */
462 #ifdef CONFIG_DEBUG_LINUX_TRACING
463 		"   -T = record to Linux tracing in addition to logging\n"
464 		"        (records all messages regardless of debug verbosity)\n"
465 #endif /* CONFIG_DEBUG_LINUX_TRACING */
466 		"   -t   include timestamps in some debug messages\n"
467 		"   -v   show hostapd version\n");
468 
469 	exit(1);
470 }
471 
472 
473 static const char * hostapd_msg_ifname_cb(void *ctx)
474 {
475 	struct hostapd_data *hapd = ctx;
476 	if (hapd && hapd->iconf && hapd->iconf->bss &&
477 	    hapd->iconf->num_bss > 0 && hapd->iconf->bss[0])
478 		return hapd->iconf->bss[0]->iface;
479 	return NULL;
480 }
481 
482 
483 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
484 					 const char *path)
485 {
486 	char *pos;
487 	os_free(interfaces->global_iface_path);
488 	interfaces->global_iface_path = os_strdup(path);
489 	if (interfaces->global_iface_path == NULL)
490 		return -1;
491 	pos = os_strrchr(interfaces->global_iface_path, '/');
492 	if (pos == NULL) {
493 		wpa_printf(MSG_ERROR, "No '/' in the global control interface "
494 			   "file");
495 		os_free(interfaces->global_iface_path);
496 		interfaces->global_iface_path = NULL;
497 		return -1;
498 	}
499 
500 	*pos = '\0';
501 	interfaces->global_iface_name = pos + 1;
502 
503 	return 0;
504 }
505 
506 
507 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
508 					const char *group)
509 {
510 #ifndef CONFIG_NATIVE_WINDOWS
511 	struct group *grp;
512 	grp = getgrnam(group);
513 	if (grp == NULL) {
514 		wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
515 		return -1;
516 	}
517 	interfaces->ctrl_iface_group = grp->gr_gid;
518 #endif /* CONFIG_NATIVE_WINDOWS */
519 	return 0;
520 }
521 
522 
523 #ifdef CONFIG_WPS
524 static int gen_uuid(const char *txt_addr)
525 {
526 	u8 addr[ETH_ALEN];
527 	u8 uuid[UUID_LEN];
528 	char buf[100];
529 
530 	if (hwaddr_aton(txt_addr, addr) < 0)
531 		return -1;
532 
533 	uuid_gen_mac_addr(addr, uuid);
534 	if (uuid_bin2str(uuid, buf, sizeof(buf)) < 0)
535 		return -1;
536 
537 	printf("%s\n", buf);
538 
539 	return 0;
540 }
541 #endif /* CONFIG_WPS */
542 
543 
544 int main(int argc, char *argv[])
545 {
546 	struct hapd_interfaces interfaces;
547 	int ret = 1;
548 	size_t i, j;
549 	int c, debug = 0, daemonize = 0;
550 	char *pid_file = NULL;
551 	const char *log_file = NULL;
552 	const char *entropy_file = NULL;
553 	char **bss_config = NULL, **tmp_bss;
554 	size_t num_bss_configs = 0;
555 #ifdef CONFIG_DEBUG_LINUX_TRACING
556 	int enable_trace_dbg = 0;
557 #endif /* CONFIG_DEBUG_LINUX_TRACING */
558 
559 	if (os_program_init())
560 		return -1;
561 
562 	os_memset(&interfaces, 0, sizeof(interfaces));
563 	interfaces.reload_config = hostapd_reload_config;
564 	interfaces.config_read_cb = hostapd_config_read;
565 	interfaces.for_each_interface = hostapd_for_each_interface;
566 	interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
567 	interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
568 	interfaces.driver_init = hostapd_driver_init;
569 	interfaces.global_iface_path = NULL;
570 	interfaces.global_iface_name = NULL;
571 	interfaces.global_ctrl_sock = -1;
572 
573 	for (;;) {
574 		c = getopt(argc, argv, "b:Bde:f:hKP:Ttu:vg:G:");
575 		if (c < 0)
576 			break;
577 		switch (c) {
578 		case 'h':
579 			usage();
580 			break;
581 		case 'd':
582 			debug++;
583 			if (wpa_debug_level > 0)
584 				wpa_debug_level--;
585 			break;
586 		case 'B':
587 			daemonize++;
588 			break;
589 		case 'e':
590 			entropy_file = optarg;
591 			break;
592 		case 'f':
593 			log_file = optarg;
594 			break;
595 		case 'K':
596 			wpa_debug_show_keys++;
597 			break;
598 		case 'P':
599 			os_free(pid_file);
600 			pid_file = os_rel2abs_path(optarg);
601 			break;
602 		case 't':
603 			wpa_debug_timestamp++;
604 			break;
605 #ifdef CONFIG_DEBUG_LINUX_TRACING
606 		case 'T':
607 			enable_trace_dbg = 1;
608 			break;
609 #endif /* CONFIG_DEBUG_LINUX_TRACING */
610 		case 'v':
611 			show_version();
612 			exit(1);
613 			break;
614 		case 'g':
615 			if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
616 				return -1;
617 			break;
618 		case 'G':
619 			if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
620 				return -1;
621 			break;
622 		case 'b':
623 			tmp_bss = os_realloc_array(bss_config,
624 						   num_bss_configs + 1,
625 						   sizeof(char *));
626 			if (tmp_bss == NULL)
627 				goto out;
628 			bss_config = tmp_bss;
629 			bss_config[num_bss_configs++] = optarg;
630 			break;
631 #ifdef CONFIG_WPS
632 		case 'u':
633 			return gen_uuid(optarg);
634 #endif /* CONFIG_WPS */
635 		default:
636 			usage();
637 			break;
638 		}
639 	}
640 
641 	if (optind == argc && interfaces.global_iface_path == NULL &&
642 	    num_bss_configs == 0)
643 		usage();
644 
645 	wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
646 
647 	if (log_file)
648 		wpa_debug_open_file(log_file);
649 	else
650 		wpa_debug_setup_stdout();
651 #ifdef CONFIG_DEBUG_LINUX_TRACING
652 	if (enable_trace_dbg) {
653 		int tret = wpa_debug_open_linux_tracing();
654 		if (tret) {
655 			wpa_printf(MSG_ERROR, "Failed to enable trace logging");
656 			return -1;
657 		}
658 	}
659 #endif /* CONFIG_DEBUG_LINUX_TRACING */
660 
661 	interfaces.count = argc - optind;
662 	if (interfaces.count || num_bss_configs) {
663 		interfaces.iface = os_calloc(interfaces.count + num_bss_configs,
664 					     sizeof(struct hostapd_iface *));
665 		if (interfaces.iface == NULL) {
666 			wpa_printf(MSG_ERROR, "malloc failed");
667 			return -1;
668 		}
669 	}
670 
671 	if (hostapd_global_init(&interfaces, entropy_file)) {
672 		wpa_printf(MSG_ERROR, "Failed to initilize global context");
673 		return -1;
674 	}
675 
676 	/* Allocate and parse configuration for full interface files */
677 	for (i = 0; i < interfaces.count; i++) {
678 		interfaces.iface[i] = hostapd_interface_init(&interfaces,
679 							     argv[optind + i],
680 							     debug);
681 		if (!interfaces.iface[i]) {
682 			wpa_printf(MSG_ERROR, "Failed to initialize interface");
683 			goto out;
684 		}
685 	}
686 
687 	/* Allocate and parse configuration for per-BSS files */
688 	for (i = 0; i < num_bss_configs; i++) {
689 		struct hostapd_iface *iface;
690 		char *fname;
691 
692 		wpa_printf(MSG_INFO, "BSS config: %s", bss_config[i]);
693 		fname = os_strchr(bss_config[i], ':');
694 		if (fname == NULL) {
695 			wpa_printf(MSG_ERROR,
696 				   "Invalid BSS config identifier '%s'",
697 				   bss_config[i]);
698 			goto out;
699 		}
700 		*fname++ = '\0';
701 		iface = hostapd_interface_init_bss(&interfaces, bss_config[i],
702 						   fname, debug);
703 		if (iface == NULL)
704 			goto out;
705 		for (j = 0; j < interfaces.count; j++) {
706 			if (interfaces.iface[j] == iface)
707 				break;
708 		}
709 		if (j == interfaces.count) {
710 			struct hostapd_iface **tmp;
711 			tmp = os_realloc_array(interfaces.iface,
712 					       interfaces.count + 1,
713 					       sizeof(struct hostapd_iface *));
714 			if (tmp == NULL) {
715 				hostapd_interface_deinit_free(iface);
716 				goto out;
717 			}
718 			interfaces.iface = tmp;
719 			interfaces.iface[interfaces.count++] = iface;
720 		}
721 	}
722 
723 	/*
724 	 * Enable configured interfaces. Depending on channel configuration,
725 	 * this may complete full initialization before returning or use a
726 	 * callback mechanism to complete setup in case of operations like HT
727 	 * co-ex scans, ACS, or DFS are needed to determine channel parameters.
728 	 * In such case, the interface will be enabled from eloop context within
729 	 * hostapd_global_run().
730 	 */
731 	interfaces.terminate_on_error = interfaces.count;
732 	for (i = 0; i < interfaces.count; i++) {
733 		if (hostapd_driver_init(interfaces.iface[i]) ||
734 		    hostapd_setup_interface(interfaces.iface[i]))
735 			goto out;
736 	}
737 
738 	hostapd_global_ctrl_iface_init(&interfaces);
739 
740 	if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
741 		wpa_printf(MSG_ERROR, "Failed to start eloop");
742 		goto out;
743 	}
744 
745 	ret = 0;
746 
747  out:
748 	hostapd_global_ctrl_iface_deinit(&interfaces);
749 	/* Deinitialize all interfaces */
750 	for (i = 0; i < interfaces.count; i++) {
751 		if (!interfaces.iface[i])
752 			continue;
753 		interfaces.iface[i]->driver_ap_teardown =
754 			!!(interfaces.iface[i]->drv_flags &
755 			   WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
756 		hostapd_interface_deinit_free(interfaces.iface[i]);
757 	}
758 	os_free(interfaces.iface);
759 
760 	hostapd_global_deinit(pid_file);
761 	os_free(pid_file);
762 
763 	if (log_file)
764 		wpa_debug_close_file();
765 	wpa_debug_close_linux_tracing();
766 
767 	os_free(bss_config);
768 
769 	os_program_deinit();
770 
771 	return ret;
772 }
773