1 /*
2 * hostapd / main()
3 * Copyright (c) 2002-2022, 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/crypto.h"
19 #include "crypto/random.h"
20 #include "crypto/tls.h"
21 #include "common/version.h"
22 #include "common/dpp.h"
23 #include "drivers/driver.h"
24 #include "eap_server/eap.h"
25 #include "eap_server/tncs.h"
26 #include "ap/hostapd.h"
27 #include "ap/ap_config.h"
28 #include "ap/ap_drv_ops.h"
29 #include "ap/dpp_hostapd.h"
30 #include "fst/fst.h"
31 #include "config_file.h"
32 #include "eap_register.h"
33 #include "ctrl_iface.h"
34
35
36 struct hapd_global {
37 void **drv_priv;
38 size_t drv_count;
39 };
40
41 static struct hapd_global global;
42
43
44 #ifndef CONFIG_NO_HOSTAPD_LOGGER
hostapd_logger_cb(void * ctx,const u8 * addr,unsigned int module,int level,const char * txt,size_t len)45 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
46 int level, const char *txt, size_t len)
47 {
48 struct hostapd_data *hapd = ctx;
49 char *format, *module_str;
50 int maxlen;
51 int conf_syslog_level, conf_stdout_level;
52 unsigned int conf_syslog, conf_stdout;
53
54 maxlen = len + 100;
55 format = os_malloc(maxlen);
56 if (!format)
57 return;
58
59 if (hapd && hapd->conf) {
60 conf_syslog_level = hapd->conf->logger_syslog_level;
61 conf_stdout_level = hapd->conf->logger_stdout_level;
62 conf_syslog = hapd->conf->logger_syslog;
63 conf_stdout = hapd->conf->logger_stdout;
64 } else {
65 conf_syslog_level = conf_stdout_level = 0;
66 conf_syslog = conf_stdout = (unsigned int) -1;
67 }
68
69 switch (module) {
70 case HOSTAPD_MODULE_IEEE80211:
71 module_str = "IEEE 802.11";
72 break;
73 case HOSTAPD_MODULE_IEEE8021X:
74 module_str = "IEEE 802.1X";
75 break;
76 case HOSTAPD_MODULE_RADIUS:
77 module_str = "RADIUS";
78 break;
79 case HOSTAPD_MODULE_WPA:
80 module_str = "WPA";
81 break;
82 case HOSTAPD_MODULE_DRIVER:
83 module_str = "DRIVER";
84 break;
85 case HOSTAPD_MODULE_MLME:
86 module_str = "MLME";
87 break;
88 default:
89 module_str = NULL;
90 break;
91 }
92
93 if (hapd && hapd->conf && addr)
94 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
95 hapd->conf->iface, MAC2STR(addr),
96 module_str ? " " : "", module_str ? module_str : "",
97 txt);
98 else if (hapd && hapd->conf)
99 os_snprintf(format, maxlen, "%s:%s%s %s",
100 hapd->conf->iface, module_str ? " " : "",
101 module_str ? module_str : "", txt);
102 else if (addr)
103 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
104 MAC2STR(addr), module_str ? " " : "",
105 module_str ? module_str : "", txt);
106 else
107 os_snprintf(format, maxlen, "%s%s%s",
108 module_str ? module_str : "",
109 module_str ? ": " : "", txt);
110
111 #ifdef CONFIG_DEBUG_SYSLOG
112 if (wpa_debug_syslog)
113 conf_stdout = 0;
114 #endif /* CONFIG_DEBUG_SYSLOG */
115 if ((conf_stdout & module) && level >= conf_stdout_level) {
116 wpa_debug_print_timestamp();
117 wpa_printf(MSG_INFO, "%s", format);
118 }
119
120 #ifndef CONFIG_NATIVE_WINDOWS
121 if ((conf_syslog & module) && level >= conf_syslog_level) {
122 int priority;
123 switch (level) {
124 case HOSTAPD_LEVEL_DEBUG_VERBOSE:
125 case HOSTAPD_LEVEL_DEBUG:
126 priority = LOG_DEBUG;
127 break;
128 case HOSTAPD_LEVEL_INFO:
129 priority = LOG_INFO;
130 break;
131 case HOSTAPD_LEVEL_NOTICE:
132 priority = LOG_NOTICE;
133 break;
134 case HOSTAPD_LEVEL_WARNING:
135 priority = LOG_WARNING;
136 break;
137 default:
138 priority = LOG_INFO;
139 break;
140 }
141 syslog(priority, "%s", format);
142 }
143 #endif /* CONFIG_NATIVE_WINDOWS */
144
145 os_free(format);
146 }
147 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
148
149
150 /**
151 * hostapd_driver_init - Preparate driver interface
152 */
hostapd_driver_init(struct hostapd_iface * iface)153 static int hostapd_driver_init(struct hostapd_iface *iface)
154 {
155 struct wpa_init_params params;
156 size_t i;
157 struct hostapd_data *hapd = iface->bss[0];
158 struct hostapd_bss_config *conf = hapd->conf;
159 u8 *b = conf->bssid;
160 struct wpa_driver_capa capa;
161 #ifdef CONFIG_IEEE80211BE
162 struct hostapd_data *h_hapd = NULL;
163 void *shared_hapd = NULL;
164 #endif /* CONFIG_IEEE80211BE */
165
166 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
167 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
168 return -1;
169 }
170
171 #ifdef CONFIG_IEEE80211BE
172 if (conf->mld_ap) {
173 if (!hapd->mld)
174 hostapd_bss_setup_multi_link(hapd, iface->interfaces);
175 h_hapd = hostapd_mld_get_first_bss(hapd);
176 }
177
178 if (h_hapd) {
179 hapd->drv_priv = h_hapd->drv_priv;
180 hapd->interface_added = h_hapd->interface_added;
181
182 /*
183 * All interfaces participating in the AP MLD would have
184 * the same MLD address, which is the interface hardware
185 * address, while the interface address would be
186 * derived from the original interface address if BSSID
187 * is not configured, and otherwise it would be the
188 * configured BSSID.
189 */
190 if (is_zero_ether_addr(b)) {
191 os_memcpy(hapd->own_addr, h_hapd->mld->mld_addr,
192 ETH_ALEN);
193 random_mac_addr_keep_oui(hapd->own_addr);
194 } else {
195 os_memcpy(hapd->own_addr, b, ETH_ALEN);
196 }
197
198 wpa_printf(MSG_DEBUG,
199 "Setup of non first link (%d) BSS of MLD %s",
200 hapd->mld_link_id, hapd->conf->iface);
201
202 goto setup_mld;
203 }
204 #endif /* CONFIG_IEEE80211BE */
205
206 /* Initialize the driver interface */
207 if (is_zero_ether_addr(b))
208 b = NULL;
209
210 os_memset(¶ms, 0, sizeof(params));
211 for (i = 0; wpa_drivers[i]; i++) {
212 if (wpa_drivers[i] != hapd->driver)
213 continue;
214
215 if (global.drv_priv[i] == NULL &&
216 wpa_drivers[i]->global_init) {
217 global.drv_priv[i] =
218 wpa_drivers[i]->global_init(iface->interfaces);
219 if (global.drv_priv[i] == NULL) {
220 wpa_printf(MSG_ERROR, "Failed to initialize "
221 "driver '%s'",
222 wpa_drivers[i]->name);
223 return -1;
224 }
225 }
226
227 params.global_priv = global.drv_priv[i];
228 break;
229 }
230 params.bssid = b;
231 #ifdef CONFIG_IEEE80211BE
232 /*
233 * Use the configured MLD MAC address as the interface hardware address
234 * if this AP is a part of an AP MLD.
235 */
236 if (hapd->conf->mld_ap) {
237 if (!is_zero_ether_addr(hapd->conf->mld_addr))
238 params.bssid = hapd->conf->mld_addr;
239 else
240 params.bssid = NULL;
241 }
242 #endif /* CONFIG_IEEE80211BE */
243
244 params.ifname = hapd->conf->iface;
245 params.driver_params = hapd->iconf->driver_params;
246 params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
247
248 params.num_bridge = hapd->iface->num_bss;
249 params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
250 if (params.bridge == NULL)
251 return -1;
252 for (i = 0; i < hapd->iface->num_bss; i++) {
253 struct hostapd_data *bss = hapd->iface->bss[i];
254 if (bss->conf->bridge[0])
255 params.bridge[i] = bss->conf->bridge;
256 }
257
258 params.own_addr = hapd->own_addr;
259
260 #ifdef CONFIG_IEEE80211BE
261 if (hapd->driver->can_share_drv &&
262 hapd->driver->can_share_drv(hapd, ¶ms, &shared_hapd)) {
263 char force_ifname[IFNAMSIZ];
264 const u8 *addr = params.bssid;
265 u8 if_addr[ETH_ALEN];
266
267 if (!shared_hapd) {
268 wpa_printf(MSG_ERROR, "Failed to get the shared drv");
269 os_free(params.bridge);
270 return -1;
271 }
272
273 /* Share an already initialized driver interface instance
274 * using an AP mode BSS in it instead of adding a new driver
275 * interface instance for the same driver. */
276 if (hostapd_if_add(shared_hapd, WPA_IF_AP_BSS,
277 params.ifname, addr, hapd,
278 &hapd->drv_priv, force_ifname, if_addr,
279 params.num_bridge && params.bridge[0] ?
280 params.bridge[0] : NULL,
281 0)) {
282 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
283 MACSTR ")", MAC2STR(hapd->own_addr));
284 os_free(params.bridge);
285 return -1;
286 }
287 os_free(params.bridge);
288
289 hapd->interface_added = 1;
290 os_memcpy(params.own_addr, addr ? addr : if_addr, ETH_ALEN);
291
292 goto pre_setup_mld;
293 }
294 #endif /* CONFIG_IEEE80211BE */
295
296 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms);
297 os_free(params.bridge);
298 if (hapd->drv_priv == NULL) {
299 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
300 hapd->driver->name);
301 hapd->driver = NULL;
302 return -1;
303 }
304
305 #ifdef CONFIG_IEEE80211BE
306 pre_setup_mld:
307 /*
308 * This is the first interface added to the AP MLD, so have the
309 * interface hardware address be the MLD address, while the link address
310 * would be derived from the original interface address if BSSID is not
311 * configured, and otherwise it would be the configured BSSID.
312 */
313 if (hapd->conf->mld_ap) {
314 os_memcpy(hapd->mld->mld_addr, hapd->own_addr, ETH_ALEN);
315
316 if (!b)
317 random_mac_addr_keep_oui(hapd->own_addr);
318 else
319 os_memcpy(hapd->own_addr, b, ETH_ALEN);
320
321 wpa_printf(MSG_DEBUG, "Setup of first link (%d) BSS of MLD %s",
322 hapd->mld_link_id, hapd->conf->iface);
323 }
324
325 setup_mld:
326 #endif /* CONFIG_IEEE80211BE */
327
328 if (hapd->driver->get_capa &&
329 hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
330 struct wowlan_triggers *triggs;
331
332 iface->drv_flags = capa.flags;
333 iface->drv_flags2 = capa.flags2;
334 iface->drv_rrm_flags = capa.rrm_flags;
335 iface->probe_resp_offloads = capa.probe_resp_offloads;
336 /*
337 * Use default extended capa values from per-radio information
338 */
339 iface->extended_capa = capa.extended_capa;
340 iface->extended_capa_mask = capa.extended_capa_mask;
341 iface->extended_capa_len = capa.extended_capa_len;
342 iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
343
344 /*
345 * Override extended capa with per-interface type (AP), if
346 * available from the driver.
347 */
348 hostapd_get_ext_capa(iface);
349
350 hostapd_get_mld_capa(iface);
351
352 triggs = wpa_get_wowlan_triggers(conf->wowlan_triggers, &capa);
353 if (triggs && hapd->driver->set_wowlan) {
354 if (hapd->driver->set_wowlan(hapd->drv_priv, triggs))
355 wpa_printf(MSG_ERROR, "set_wowlan failed");
356 }
357 os_free(triggs);
358
359 iface->mbssid_max_interfaces = capa.mbssid_max_interfaces;
360 iface->ema_max_periodicity = capa.ema_max_periodicity;
361 }
362
363 #ifdef CONFIG_IEEE80211BE
364 if (hapd->conf->mld_ap) {
365 if (!(iface->drv_flags2 & WPA_DRIVER_FLAGS2_MLO)) {
366 wpa_printf(MSG_INFO,
367 "MLD: Not supported by the driver");
368 return -1;
369 }
370
371 /* Initialize the BSS parameter change to 1 */
372 hapd->eht_mld_bss_param_change = 1;
373
374 wpa_printf(MSG_DEBUG,
375 "MLD: Set link_id=%u, mld_addr=" MACSTR
376 ", own_addr=" MACSTR,
377 hapd->mld_link_id, MAC2STR(hapd->mld->mld_addr),
378 MAC2STR(hapd->own_addr));
379
380 if (hostapd_drv_link_add(hapd, hapd->mld_link_id,
381 hapd->own_addr)) {
382 wpa_printf(MSG_ERROR,
383 "MLD: Failed to add link %d in MLD %s",
384 hapd->mld_link_id, hapd->conf->iface);
385 return -1;
386 }
387 hostapd_mld_add_link(hapd);
388 }
389 #endif /* CONFIG_IEEE80211BE */
390
391 return 0;
392 }
393
394
395 /**
396 * hostapd_interface_init - Read configuration file and init BSS data
397 *
398 * This function is used to parse configuration file for a full interface (one
399 * or more BSSes sharing the same radio) and allocate memory for the BSS
400 * interfaces. No actual driver operations are started.
401 */
402 static struct hostapd_iface *
hostapd_interface_init(struct hapd_interfaces * interfaces,const char * if_name,const char * config_fname,int debug)403 hostapd_interface_init(struct hapd_interfaces *interfaces, const char *if_name,
404 const char *config_fname, int debug)
405 {
406 struct hostapd_iface *iface;
407 int k;
408
409 wpa_printf(MSG_DEBUG, "Configuration file: %s", config_fname);
410 iface = hostapd_init(interfaces, config_fname);
411 if (!iface)
412 return NULL;
413
414 if (if_name) {
415 os_strlcpy(iface->conf->bss[0]->iface, if_name,
416 sizeof(iface->conf->bss[0]->iface));
417 }
418
419 iface->interfaces = interfaces;
420
421 for (k = 0; k < debug; k++) {
422 if (iface->bss[0]->conf->logger_stdout_level > 0)
423 iface->bss[0]->conf->logger_stdout_level--;
424 }
425
426 if (iface->conf->bss[0]->iface[0] == '\0' &&
427 !hostapd_drv_none(iface->bss[0])) {
428 wpa_printf(MSG_ERROR,
429 "Interface name not specified in %s, nor by '-i' parameter",
430 config_fname);
431 hostapd_interface_deinit_free(iface);
432 return NULL;
433 }
434
435 return iface;
436 }
437
438
439 /**
440 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
441 */
handle_term(int sig,void * signal_ctx)442 static void handle_term(int sig, void *signal_ctx)
443 {
444 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
445 eloop_terminate();
446 }
447
448
449 #ifndef CONFIG_NATIVE_WINDOWS
450
handle_reload_iface(struct hostapd_iface * iface,void * ctx)451 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
452 {
453 if (hostapd_reload_config(iface) < 0) {
454 wpa_printf(MSG_WARNING, "Failed to read new configuration "
455 "file - continuing with old.");
456 }
457 return 0;
458 }
459
460
461 /**
462 * handle_reload - SIGHUP handler to reload configuration
463 */
handle_reload(int sig,void * signal_ctx)464 static void handle_reload(int sig, void *signal_ctx)
465 {
466 struct hapd_interfaces *interfaces = signal_ctx;
467 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
468 sig);
469 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
470 }
471
472
handle_dump_state(int sig,void * signal_ctx)473 static void handle_dump_state(int sig, void *signal_ctx)
474 {
475 /* Not used anymore - ignore signal */
476 }
477 #endif /* CONFIG_NATIVE_WINDOWS */
478
479
hostapd_global_init(struct hapd_interfaces * interfaces,const char * entropy_file)480 static int hostapd_global_init(struct hapd_interfaces *interfaces,
481 const char *entropy_file)
482 {
483 int i;
484
485 os_memset(&global, 0, sizeof(global));
486
487 hostapd_logger_register_cb(hostapd_logger_cb);
488
489 if (eap_server_register_methods()) {
490 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
491 return -1;
492 }
493
494 if (eloop_init()) {
495 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
496 return -1;
497 }
498 interfaces->eloop_initialized = 1;
499
500 random_init(entropy_file);
501
502 #ifndef CONFIG_NATIVE_WINDOWS
503 eloop_register_signal(SIGHUP, handle_reload, interfaces);
504 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
505 #endif /* CONFIG_NATIVE_WINDOWS */
506 eloop_register_signal_terminate(handle_term, interfaces);
507
508 #ifndef CONFIG_NATIVE_WINDOWS
509 openlog("hostapd", 0, LOG_DAEMON);
510 #endif /* CONFIG_NATIVE_WINDOWS */
511
512 for (i = 0; wpa_drivers[i]; i++)
513 global.drv_count++;
514 if (global.drv_count == 0) {
515 wpa_printf(MSG_ERROR, "No drivers enabled");
516 return -1;
517 }
518 global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
519 if (global.drv_priv == NULL)
520 return -1;
521
522 return 0;
523 }
524
525
hostapd_global_deinit(const char * pid_file,int eloop_initialized)526 static void hostapd_global_deinit(const char *pid_file, int eloop_initialized)
527 {
528 int i;
529
530 for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
531 if (!global.drv_priv[i])
532 continue;
533 wpa_drivers[i]->global_deinit(global.drv_priv[i]);
534 }
535 os_free(global.drv_priv);
536 global.drv_priv = NULL;
537
538 #ifdef EAP_SERVER_TNC
539 tncs_global_deinit();
540 #endif /* EAP_SERVER_TNC */
541
542 random_deinit();
543
544 if (eloop_initialized)
545 eloop_destroy();
546
547 #ifndef CONFIG_NATIVE_WINDOWS
548 closelog();
549 #endif /* CONFIG_NATIVE_WINDOWS */
550
551 eap_server_unregister_methods();
552
553 os_daemonize_terminate(pid_file);
554 }
555
556
hostapd_global_run(struct hapd_interfaces * ifaces,int daemonize,const char * pid_file)557 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
558 const char *pid_file)
559 {
560 #ifdef EAP_SERVER_TNC
561 int tnc = 0;
562 size_t i, k;
563
564 for (i = 0; !tnc && i < ifaces->count; i++) {
565 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
566 if (ifaces->iface[i]->bss[0]->conf->tnc) {
567 tnc++;
568 break;
569 }
570 }
571 }
572
573 if (tnc && tncs_global_init() < 0) {
574 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
575 return -1;
576 }
577 #endif /* EAP_SERVER_TNC */
578
579 if (daemonize) {
580 if (os_daemonize(pid_file)) {
581 wpa_printf(MSG_ERROR, "daemon: %s", strerror(errno));
582 return -1;
583 }
584 if (eloop_sock_requeue()) {
585 wpa_printf(MSG_ERROR, "eloop_sock_requeue: %s",
586 strerror(errno));
587 return -1;
588 }
589 }
590
591 eloop_run();
592
593 return 0;
594 }
595
596
show_version(void)597 static void show_version(void)
598 {
599 fprintf(stderr,
600 "hostapd v%s\n"
601 "User space daemon for IEEE 802.11 AP management,\n"
602 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
603 "Copyright (c) 2002-2024, Jouni Malinen <j@w1.fi> "
604 "and contributors\n",
605 VERSION_STR);
606 }
607
608
usage(void)609 static void usage(void)
610 {
611 show_version();
612 fprintf(stderr,
613 "\n"
614 "usage: hostapd [-hdBKtvq] [-P <PID file>] [-e <entropy file>] "
615 "\\\n"
616 " [-g <global ctrl_iface>] [-G <group>]\\\n"
617 " [-i <comma-separated list of interface names>]\\\n"
618 " <configuration file(s)>\n"
619 "\n"
620 "options:\n"
621 " -h show this usage\n"
622 " -d show more debug messages (-dd for even more)\n"
623 " -B run daemon in the background\n"
624 " -e entropy file\n"
625 " -g global control interface path\n"
626 " -G group for control interfaces\n"
627 " -P PID file\n"
628 " -K include key data in debug messages\n"
629 #ifdef CONFIG_DEBUG_FILE
630 " -f log output to debug file instead of stdout\n"
631 #endif /* CONFIG_DEBUG_FILE */
632 #ifdef CONFIG_DEBUG_LINUX_TRACING
633 " -T record to Linux tracing in addition to logging\n"
634 " (records all messages regardless of debug verbosity)\n"
635 #endif /* CONFIG_DEBUG_LINUX_TRACING */
636 " -i list of interface names to use\n"
637 #ifdef CONFIG_DEBUG_SYSLOG
638 " -s log output to syslog instead of stdout\n"
639 #endif /* CONFIG_DEBUG_SYSLOG */
640 " -S start all the interfaces synchronously\n"
641 " -t include timestamps in some debug messages\n"
642 " -v show hostapd version\n"
643 " -q show less debug messages (-qq for even less)\n");
644
645 exit(1);
646 }
647
648
hostapd_msg_ifname_cb(void * ctx)649 static const char * hostapd_msg_ifname_cb(void *ctx)
650 {
651 struct hostapd_data *hapd = ctx;
652 if (hapd && hapd->conf)
653 return hapd->conf->iface;
654 return NULL;
655 }
656
657
hostapd_get_global_ctrl_iface(struct hapd_interfaces * interfaces,const char * path)658 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
659 const char *path)
660 {
661 #ifndef CONFIG_CTRL_IFACE_UDP
662 char *pos;
663 #endif /* !CONFIG_CTRL_IFACE_UDP */
664
665 os_free(interfaces->global_iface_path);
666 interfaces->global_iface_path = os_strdup(path);
667 if (interfaces->global_iface_path == NULL)
668 return -1;
669
670 #ifndef CONFIG_CTRL_IFACE_UDP
671 pos = os_strrchr(interfaces->global_iface_path, '/');
672 if (pos == NULL) {
673 wpa_printf(MSG_ERROR, "No '/' in the global control interface "
674 "file");
675 os_free(interfaces->global_iface_path);
676 interfaces->global_iface_path = NULL;
677 return -1;
678 }
679
680 *pos = '\0';
681 interfaces->global_iface_name = pos + 1;
682 #endif /* !CONFIG_CTRL_IFACE_UDP */
683
684 return 0;
685 }
686
687
hostapd_get_ctrl_iface_group(struct hapd_interfaces * interfaces,const char * group)688 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
689 const char *group)
690 {
691 #ifndef CONFIG_NATIVE_WINDOWS
692 struct group *grp;
693 grp = getgrnam(group);
694 if (grp == NULL) {
695 wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
696 return -1;
697 }
698 interfaces->ctrl_iface_group = grp->gr_gid;
699 #endif /* CONFIG_NATIVE_WINDOWS */
700 return 0;
701 }
702
703
hostapd_get_interface_names(char *** if_names,size_t * if_names_size,char * arg)704 static int hostapd_get_interface_names(char ***if_names,
705 size_t *if_names_size,
706 char *arg)
707 {
708 char *if_name, *tmp, **nnames;
709 size_t i;
710
711 if (!arg)
712 return -1;
713 if_name = strtok_r(arg, ",", &tmp);
714
715 while (if_name) {
716 nnames = os_realloc_array(*if_names, 1 + *if_names_size,
717 sizeof(char *));
718 if (!nnames)
719 goto fail;
720 *if_names = nnames;
721
722 (*if_names)[*if_names_size] = os_strdup(if_name);
723 if (!(*if_names)[*if_names_size])
724 goto fail;
725 (*if_names_size)++;
726 if_name = strtok_r(NULL, ",", &tmp);
727 }
728
729 return 0;
730
731 fail:
732 for (i = 0; i < *if_names_size; i++)
733 os_free((*if_names)[i]);
734 os_free(*if_names);
735 *if_names = NULL;
736 *if_names_size = 0;
737 return -1;
738 }
739
740
741 #ifdef CONFIG_WPS
gen_uuid(const char * txt_addr)742 static int gen_uuid(const char *txt_addr)
743 {
744 u8 addr[ETH_ALEN];
745 u8 uuid[UUID_LEN];
746 char buf[100];
747
748 if (hwaddr_aton(txt_addr, addr) < 0)
749 return -1;
750
751 uuid_gen_mac_addr(addr, uuid);
752 if (uuid_bin2str(uuid, buf, sizeof(buf)) < 0)
753 return -1;
754
755 printf("%s\n", buf);
756
757 return 0;
758 }
759 #endif /* CONFIG_WPS */
760
761
762 #ifndef HOSTAPD_CLEANUP_INTERVAL
763 #define HOSTAPD_CLEANUP_INTERVAL 10
764 #endif /* HOSTAPD_CLEANUP_INTERVAL */
765
hostapd_periodic_call(struct hostapd_iface * iface,void * ctx)766 static int hostapd_periodic_call(struct hostapd_iface *iface, void *ctx)
767 {
768 hostapd_periodic_iface(iface);
769 return 0;
770 }
771
772
773 /* Periodic cleanup tasks */
hostapd_periodic(void * eloop_ctx,void * timeout_ctx)774 static void hostapd_periodic(void *eloop_ctx, void *timeout_ctx)
775 {
776 struct hapd_interfaces *interfaces = eloop_ctx;
777
778 eloop_register_timeout(HOSTAPD_CLEANUP_INTERVAL, 0,
779 hostapd_periodic, interfaces, NULL);
780 hostapd_for_each_interface(interfaces, hostapd_periodic_call, NULL);
781 }
782
783
hostapd_global_cleanup_mld(struct hapd_interfaces * interfaces)784 static void hostapd_global_cleanup_mld(struct hapd_interfaces *interfaces)
785 {
786 #ifdef CONFIG_IEEE80211BE
787 size_t i;
788
789 if (!interfaces || !interfaces->mld)
790 return;
791
792 for (i = 0; i < interfaces->mld_count; i++) {
793 if (!interfaces->mld[i])
794 continue;
795
796 interfaces->mld_ctrl_iface_deinit(interfaces->mld[i]);
797 os_free(interfaces->mld[i]);
798 interfaces->mld[i] = NULL;
799 }
800
801 os_free(interfaces->mld);
802 interfaces->mld = NULL;
803 interfaces->mld_count = 0;
804 #endif /* CONFIG_IEEE80211BE */
805 }
806
807
main(int argc,char * argv[])808 int main(int argc, char *argv[])
809 {
810 struct hapd_interfaces interfaces;
811 int ret = 1;
812 size_t i, j;
813 int c, debug = 0, daemonize = 0;
814 char *pid_file = NULL;
815 const char *log_file = NULL;
816 const char *entropy_file = NULL;
817 char **bss_config = NULL, **tmp_bss;
818 size_t num_bss_configs = 0;
819 #ifdef CONFIG_DEBUG_LINUX_TRACING
820 int enable_trace_dbg = 0;
821 #endif /* CONFIG_DEBUG_LINUX_TRACING */
822 int start_ifaces_in_sync = 0;
823 char **if_names = NULL;
824 size_t if_names_size = 0;
825 #ifdef CONFIG_DPP
826 struct dpp_global_config dpp_conf;
827 #endif /* CONFIG_DPP */
828
829 if (os_program_init())
830 return -1;
831
832 os_memset(&interfaces, 0, sizeof(interfaces));
833 interfaces.reload_config = hostapd_reload_config;
834 interfaces.config_read_cb = hostapd_config_read;
835 interfaces.for_each_interface = hostapd_for_each_interface;
836 interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
837 interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
838 interfaces.driver_init = hostapd_driver_init;
839 interfaces.global_iface_path = NULL;
840 interfaces.global_iface_name = NULL;
841 interfaces.global_ctrl_sock = -1;
842 #ifdef CONFIG_IEEE80211BE
843 interfaces.mld_ctrl_iface_init = hostapd_mld_ctrl_iface_init;
844 interfaces.mld_ctrl_iface_deinit = hostapd_mld_ctrl_iface_deinit;
845 #endif /* CONFIG_IEEE80211BE */
846 dl_list_init(&interfaces.global_ctrl_dst);
847 #ifdef CONFIG_ETH_P_OUI
848 dl_list_init(&interfaces.eth_p_oui);
849 #endif /* CONFIG_ETH_P_OUI */
850 #ifdef CONFIG_DPP
851 os_memset(&dpp_conf, 0, sizeof(dpp_conf));
852 dpp_conf.cb_ctx = &interfaces;
853 #ifdef CONFIG_DPP2
854 dpp_conf.remove_bi = hostapd_dpp_remove_bi;
855 #endif /* CONFIG_DPP2 */
856 interfaces.dpp = dpp_global_init(&dpp_conf);
857 if (!interfaces.dpp)
858 return -1;
859 #endif /* CONFIG_DPP */
860
861 for (;;) {
862 c = getopt(argc, argv, "b:Bde:f:hi:KP:sSTtu:vg:G:q");
863 if (c < 0)
864 break;
865 switch (c) {
866 case 'h':
867 usage();
868 break;
869 case 'd':
870 debug++;
871 if (wpa_debug_level > 0)
872 wpa_debug_level--;
873 break;
874 case 'B':
875 daemonize++;
876 break;
877 case 'e':
878 entropy_file = optarg;
879 break;
880 case 'f':
881 log_file = optarg;
882 break;
883 case 'K':
884 wpa_debug_show_keys++;
885 break;
886 case 'P':
887 os_free(pid_file);
888 pid_file = os_rel2abs_path(optarg);
889 break;
890 case 't':
891 wpa_debug_timestamp++;
892 break;
893 #ifdef CONFIG_DEBUG_LINUX_TRACING
894 case 'T':
895 enable_trace_dbg = 1;
896 break;
897 #endif /* CONFIG_DEBUG_LINUX_TRACING */
898 case 'v':
899 show_version();
900 exit(1);
901 case 'g':
902 if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
903 return -1;
904 break;
905 case 'G':
906 if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
907 return -1;
908 break;
909 case 'b':
910 tmp_bss = os_realloc_array(bss_config,
911 num_bss_configs + 1,
912 sizeof(char *));
913 if (tmp_bss == NULL)
914 goto out;
915 bss_config = tmp_bss;
916 bss_config[num_bss_configs++] = optarg;
917 break;
918 #ifdef CONFIG_DEBUG_SYSLOG
919 case 's':
920 wpa_debug_syslog = 1;
921 break;
922 #endif /* CONFIG_DEBUG_SYSLOG */
923 case 'S':
924 start_ifaces_in_sync = 1;
925 break;
926 #ifdef CONFIG_WPS
927 case 'u':
928 return gen_uuid(optarg);
929 #endif /* CONFIG_WPS */
930 case 'i':
931 if (hostapd_get_interface_names(&if_names,
932 &if_names_size, optarg))
933 goto out;
934 break;
935 case 'q':
936 wpa_debug_level++;
937 break;
938 default:
939 usage();
940 break;
941 }
942 }
943
944 if (optind == argc && interfaces.global_iface_path == NULL &&
945 num_bss_configs == 0)
946 usage();
947
948 wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
949
950 if (log_file)
951 wpa_debug_open_file(log_file);
952 if (!log_file && !wpa_debug_syslog)
953 wpa_debug_setup_stdout();
954 #ifdef CONFIG_DEBUG_SYSLOG
955 if (wpa_debug_syslog)
956 wpa_debug_open_syslog();
957 #endif /* CONFIG_DEBUG_SYSLOG */
958 #ifdef CONFIG_DEBUG_LINUX_TRACING
959 if (enable_trace_dbg) {
960 int tret = wpa_debug_open_linux_tracing();
961 if (tret) {
962 wpa_printf(MSG_ERROR, "Failed to enable trace logging");
963 return -1;
964 }
965 }
966 #endif /* CONFIG_DEBUG_LINUX_TRACING */
967
968 interfaces.count = argc - optind;
969 if (interfaces.count || num_bss_configs) {
970 interfaces.iface = os_calloc(interfaces.count + num_bss_configs,
971 sizeof(struct hostapd_iface *));
972 if (interfaces.iface == NULL) {
973 wpa_printf(MSG_ERROR, "malloc failed");
974 return -1;
975 }
976 }
977
978 if (hostapd_global_init(&interfaces, entropy_file)) {
979 wpa_printf(MSG_ERROR, "Failed to initialize global context");
980 return -1;
981 }
982
983 eloop_register_timeout(HOSTAPD_CLEANUP_INTERVAL, 0,
984 hostapd_periodic, &interfaces, NULL);
985
986 if (fst_global_init()) {
987 wpa_printf(MSG_ERROR,
988 "Failed to initialize global FST context");
989 goto out;
990 }
991
992 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
993 if (!fst_global_add_ctrl(fst_ctrl_cli))
994 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
995 #endif /* CONFIG_FST && CONFIG_CTRL_IFACE */
996
997 /* Allocate and parse configuration for full interface files */
998 for (i = 0; i < interfaces.count; i++) {
999 char *if_name = NULL;
1000
1001 if (i < if_names_size)
1002 if_name = if_names[i];
1003
1004 interfaces.iface[i] = hostapd_interface_init(&interfaces,
1005 if_name,
1006 argv[optind + i],
1007 debug);
1008 if (!interfaces.iface[i]) {
1009 wpa_printf(MSG_ERROR, "Failed to initialize interface");
1010 goto out;
1011 }
1012 if (start_ifaces_in_sync)
1013 interfaces.iface[i]->need_to_start_in_sync = 1;
1014 }
1015
1016 /* Allocate and parse configuration for per-BSS files */
1017 for (i = 0; i < num_bss_configs; i++) {
1018 struct hostapd_iface *iface;
1019 char *fname;
1020
1021 wpa_printf(MSG_INFO, "BSS config: %s", bss_config[i]);
1022 fname = os_strchr(bss_config[i], ':');
1023 if (fname == NULL) {
1024 wpa_printf(MSG_ERROR,
1025 "Invalid BSS config identifier '%s'",
1026 bss_config[i]);
1027 goto out;
1028 }
1029 *fname++ = '\0';
1030 iface = hostapd_interface_init_bss(&interfaces, bss_config[i],
1031 fname, debug);
1032 if (iface == NULL)
1033 goto out;
1034 for (j = 0; j < interfaces.count; j++) {
1035 if (interfaces.iface[j] == iface)
1036 break;
1037 }
1038 if (j == interfaces.count) {
1039 struct hostapd_iface **tmp;
1040 tmp = os_realloc_array(interfaces.iface,
1041 interfaces.count + 1,
1042 sizeof(struct hostapd_iface *));
1043 if (tmp == NULL) {
1044 hostapd_interface_deinit_free(iface);
1045 goto out;
1046 }
1047 interfaces.iface = tmp;
1048 interfaces.iface[interfaces.count++] = iface;
1049 }
1050 }
1051
1052 /*
1053 * Enable configured interfaces. Depending on channel configuration,
1054 * this may complete full initialization before returning or use a
1055 * callback mechanism to complete setup in case of operations like HT
1056 * co-ex scans, ACS, or DFS are needed to determine channel parameters.
1057 * In such case, the interface will be enabled from eloop context within
1058 * hostapd_global_run().
1059 */
1060 interfaces.terminate_on_error = interfaces.count;
1061 for (i = 0; i < interfaces.count; i++) {
1062 if (hostapd_driver_init(interfaces.iface[i]) ||
1063 hostapd_setup_interface(interfaces.iface[i]))
1064 goto out;
1065 }
1066
1067 hostapd_global_ctrl_iface_init(&interfaces);
1068
1069 if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
1070 wpa_printf(MSG_ERROR, "Failed to start eloop");
1071 goto out;
1072 }
1073
1074 ret = 0;
1075
1076 out:
1077 hostapd_global_ctrl_iface_deinit(&interfaces);
1078 /* Deinitialize all interfaces */
1079 for (i = 0; i < interfaces.count; i++) {
1080 if (!interfaces.iface[i])
1081 continue;
1082 interfaces.iface[i]->driver_ap_teardown =
1083 !!(interfaces.iface[i]->drv_flags &
1084 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
1085 hostapd_interface_deinit_free(interfaces.iface[i]);
1086 interfaces.iface[i] = NULL;
1087 }
1088 os_free(interfaces.iface);
1089 interfaces.iface = NULL;
1090 interfaces.count = 0;
1091
1092 hostapd_global_cleanup_mld(&interfaces);
1093
1094 #ifdef CONFIG_DPP
1095 dpp_global_deinit(interfaces.dpp);
1096 #endif /* CONFIG_DPP */
1097
1098 if (interfaces.eloop_initialized)
1099 eloop_cancel_timeout(hostapd_periodic, &interfaces, NULL);
1100 hostapd_global_deinit(pid_file, interfaces.eloop_initialized);
1101 os_free(pid_file);
1102
1103 wpa_debug_close_syslog();
1104 if (log_file)
1105 wpa_debug_close_file();
1106 wpa_debug_close_linux_tracing();
1107
1108 os_free(bss_config);
1109
1110 for (i = 0; i < if_names_size; i++)
1111 os_free(if_names[i]);
1112 os_free(if_names);
1113
1114 fst_global_deinit();
1115
1116 crypto_unload();
1117 os_program_deinit();
1118
1119 return ret;
1120 }
1121