Interworking: Add support for QoS Mapping functionality for the AP
[mech_eap.git] / hostapd / main.c
1 /*
2  * hostapd / main()
3  * Copyright (c) 2002-2011, 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 "crypto/random.h"
18 #include "crypto/tls.h"
19 #include "common/version.h"
20 #include "drivers/driver.h"
21 #include "eap_server/eap.h"
22 #include "eap_server/tncs.h"
23 #include "ap/hostapd.h"
24 #include "ap/ap_config.h"
25 #include "ap/ap_drv_ops.h"
26 #include "config_file.h"
27 #include "eap_register.h"
28 #include "dump_state.h"
29 #include "ctrl_iface.h"
30
31
32 extern int wpa_debug_level;
33 extern int wpa_debug_show_keys;
34 extern int wpa_debug_timestamp;
35
36 extern struct wpa_driver_ops *wpa_drivers[];
37
38
39 struct hapd_global {
40         void **drv_priv;
41         size_t drv_count;
42 };
43
44 static struct hapd_global global;
45
46
47 #ifndef CONFIG_NO_HOSTAPD_LOGGER
48 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
49                               int level, const char *txt, size_t len)
50 {
51         struct hostapd_data *hapd = ctx;
52         char *format, *module_str;
53         int maxlen;
54         int conf_syslog_level, conf_stdout_level;
55         unsigned int conf_syslog, conf_stdout;
56
57         maxlen = len + 100;
58         format = os_malloc(maxlen);
59         if (!format)
60                 return;
61
62         if (hapd && hapd->conf) {
63                 conf_syslog_level = hapd->conf->logger_syslog_level;
64                 conf_stdout_level = hapd->conf->logger_stdout_level;
65                 conf_syslog = hapd->conf->logger_syslog;
66                 conf_stdout = hapd->conf->logger_stdout;
67         } else {
68                 conf_syslog_level = conf_stdout_level = 0;
69                 conf_syslog = conf_stdout = (unsigned int) -1;
70         }
71
72         switch (module) {
73         case HOSTAPD_MODULE_IEEE80211:
74                 module_str = "IEEE 802.11";
75                 break;
76         case HOSTAPD_MODULE_IEEE8021X:
77                 module_str = "IEEE 802.1X";
78                 break;
79         case HOSTAPD_MODULE_RADIUS:
80                 module_str = "RADIUS";
81                 break;
82         case HOSTAPD_MODULE_WPA:
83                 module_str = "WPA";
84                 break;
85         case HOSTAPD_MODULE_DRIVER:
86                 module_str = "DRIVER";
87                 break;
88         case HOSTAPD_MODULE_IAPP:
89                 module_str = "IAPP";
90                 break;
91         case HOSTAPD_MODULE_MLME:
92                 module_str = "MLME";
93                 break;
94         default:
95                 module_str = NULL;
96                 break;
97         }
98
99         if (hapd && hapd->conf && addr)
100                 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
101                             hapd->conf->iface, MAC2STR(addr),
102                             module_str ? " " : "", module_str, txt);
103         else if (hapd && hapd->conf)
104                 os_snprintf(format, maxlen, "%s:%s%s %s",
105                             hapd->conf->iface, module_str ? " " : "",
106                             module_str, txt);
107         else if (addr)
108                 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
109                             MAC2STR(addr), module_str ? " " : "",
110                             module_str, txt);
111         else
112                 os_snprintf(format, maxlen, "%s%s%s",
113                             module_str, module_str ? ": " : "", txt);
114
115         if ((conf_stdout & module) && level >= conf_stdout_level) {
116                 wpa_debug_print_timestamp();
117                 printf("%s\n", 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_init - Allocate and initialize per-interface data
152  * @config_file: Path to the configuration file
153  * Returns: Pointer to the allocated interface data or %NULL on failure
154  *
155  * This function is used to allocate main data structures for per-interface
156  * data. The allocated data buffer will be freed by calling
157  * hostapd_cleanup_iface().
158  */
159 static struct hostapd_iface * hostapd_init(const char *config_file)
160 {
161         struct hostapd_iface *hapd_iface = NULL;
162         struct hostapd_config *conf = NULL;
163         struct hostapd_data *hapd;
164         size_t i;
165
166         hapd_iface = os_zalloc(sizeof(*hapd_iface));
167         if (hapd_iface == NULL)
168                 goto fail;
169
170         hapd_iface->config_fname = os_strdup(config_file);
171         if (hapd_iface->config_fname == NULL)
172                 goto fail;
173
174         conf = hostapd_config_read(hapd_iface->config_fname);
175         if (conf == NULL)
176                 goto fail;
177         hapd_iface->conf = conf;
178
179         hapd_iface->num_bss = conf->num_bss;
180         hapd_iface->bss = os_calloc(conf->num_bss,
181                                     sizeof(struct hostapd_data *));
182         if (hapd_iface->bss == NULL)
183                 goto fail;
184
185         for (i = 0; i < conf->num_bss; i++) {
186                 hapd = hapd_iface->bss[i] =
187                         hostapd_alloc_bss_data(hapd_iface, conf,
188                                                &conf->bss[i]);
189                 if (hapd == NULL)
190                         goto fail;
191                 hapd->msg_ctx = hapd;
192         }
193
194         return hapd_iface;
195
196 fail:
197         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
198                    config_file);
199         if (conf)
200                 hostapd_config_free(conf);
201         if (hapd_iface) {
202                 os_free(hapd_iface->config_fname);
203                 os_free(hapd_iface->bss);
204                 os_free(hapd_iface);
205         }
206         return NULL;
207 }
208
209
210 static int hostapd_driver_init(struct hostapd_iface *iface)
211 {
212         struct wpa_init_params params;
213         size_t i;
214         struct hostapd_data *hapd = iface->bss[0];
215         struct hostapd_bss_config *conf = hapd->conf;
216         u8 *b = conf->bssid;
217         struct wpa_driver_capa capa;
218
219         if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
220                 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
221                 return -1;
222         }
223
224         /* Initialize the driver interface */
225         if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
226                 b = NULL;
227
228         os_memset(&params, 0, sizeof(params));
229         for (i = 0; wpa_drivers[i]; i++) {
230                 if (wpa_drivers[i] != hapd->driver)
231                         continue;
232
233                 if (global.drv_priv[i] == NULL &&
234                     wpa_drivers[i]->global_init) {
235                         global.drv_priv[i] = wpa_drivers[i]->global_init();
236                         if (global.drv_priv[i] == NULL) {
237                                 wpa_printf(MSG_ERROR, "Failed to initialize "
238                                            "driver '%s'",
239                                            wpa_drivers[i]->name);
240                                 return -1;
241                         }
242                 }
243
244                 params.global_priv = global.drv_priv[i];
245                 break;
246         }
247         params.bssid = b;
248         params.ifname = hapd->conf->iface;
249         params.ssid = hapd->conf->ssid.ssid;
250         params.ssid_len = hapd->conf->ssid.ssid_len;
251         params.test_socket = hapd->conf->test_socket;
252         params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
253
254         params.num_bridge = hapd->iface->num_bss;
255         params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
256         if (params.bridge == NULL)
257                 return -1;
258         for (i = 0; i < hapd->iface->num_bss; i++) {
259                 struct hostapd_data *bss = hapd->iface->bss[i];
260                 if (bss->conf->bridge[0])
261                         params.bridge[i] = bss->conf->bridge;
262         }
263
264         params.own_addr = hapd->own_addr;
265
266         hapd->drv_priv = hapd->driver->hapd_init(hapd, &params);
267         os_free(params.bridge);
268         if (hapd->drv_priv == NULL) {
269                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
270                            hapd->driver->name);
271                 hapd->driver = NULL;
272                 return -1;
273         }
274
275         if (hapd->driver->get_capa &&
276             hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
277                 iface->drv_flags = capa.flags;
278                 iface->probe_resp_offloads = capa.probe_resp_offloads;
279                 iface->extended_capa = capa.extended_capa;
280                 iface->extended_capa_mask = capa.extended_capa_mask;
281                 iface->extended_capa_len = capa.extended_capa_len;
282                 iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
283         }
284
285 #ifdef CONFIG_INTERWORKING
286         if (hapd->driver->set_qos_map && conf->qos_map_set_len &&
287             hapd->driver->set_qos_map(hapd->drv_priv, conf->qos_map_set,
288                                       conf->qos_map_set_len)) {
289                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map.");
290                 return -1;
291         }
292 #endif /* CONFIG_INTERWORKING */
293
294         return 0;
295 }
296
297
298 static struct hostapd_iface *
299 hostapd_interface_init(struct hapd_interfaces *interfaces,
300                        const char *config_fname, int debug)
301 {
302         struct hostapd_iface *iface;
303         int k;
304
305         wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
306         iface = hostapd_init(config_fname);
307         if (!iface)
308                 return NULL;
309         iface->interfaces = interfaces;
310
311         for (k = 0; k < debug; k++) {
312                 if (iface->bss[0]->conf->logger_stdout_level > 0)
313                         iface->bss[0]->conf->logger_stdout_level--;
314         }
315
316         if (iface->conf->bss[0].iface[0] == '\0' &&
317             !hostapd_drv_none(iface->bss[0])) {
318                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
319                            config_fname);
320                 hostapd_interface_deinit_free(iface);
321                 return NULL;
322         }
323
324         if (hostapd_driver_init(iface) ||
325             hostapd_setup_interface(iface)) {
326                 hostapd_interface_deinit_free(iface);
327                 return NULL;
328         }
329
330         return iface;
331 }
332
333
334 /**
335  * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
336  */
337 static void handle_term(int sig, void *signal_ctx)
338 {
339         wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
340         eloop_terminate();
341 }
342
343
344 #ifndef CONFIG_NATIVE_WINDOWS
345
346 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
347 {
348         if (hostapd_reload_config(iface) < 0) {
349                 wpa_printf(MSG_WARNING, "Failed to read new configuration "
350                            "file - continuing with old.");
351         }
352         return 0;
353 }
354
355
356 /**
357  * handle_reload - SIGHUP handler to reload configuration
358  */
359 static void handle_reload(int sig, void *signal_ctx)
360 {
361         struct hapd_interfaces *interfaces = signal_ctx;
362         wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
363                    sig);
364         hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
365 }
366
367
368 static void handle_dump_state(int sig, void *signal_ctx)
369 {
370 #ifdef HOSTAPD_DUMP_STATE
371         struct hapd_interfaces *interfaces = signal_ctx;
372         hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL);
373 #endif /* HOSTAPD_DUMP_STATE */
374 }
375 #endif /* CONFIG_NATIVE_WINDOWS */
376
377
378 static int hostapd_global_init(struct hapd_interfaces *interfaces,
379                                const char *entropy_file)
380 {
381         int i;
382
383         os_memset(&global, 0, sizeof(global));
384
385         hostapd_logger_register_cb(hostapd_logger_cb);
386
387         if (eap_server_register_methods()) {
388                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
389                 return -1;
390         }
391
392         if (eloop_init()) {
393                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
394                 return -1;
395         }
396
397         random_init(entropy_file);
398
399 #ifndef CONFIG_NATIVE_WINDOWS
400         eloop_register_signal(SIGHUP, handle_reload, interfaces);
401         eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
402 #endif /* CONFIG_NATIVE_WINDOWS */
403         eloop_register_signal_terminate(handle_term, interfaces);
404
405 #ifndef CONFIG_NATIVE_WINDOWS
406         openlog("hostapd", 0, LOG_DAEMON);
407 #endif /* CONFIG_NATIVE_WINDOWS */
408
409         for (i = 0; wpa_drivers[i]; i++)
410                 global.drv_count++;
411         if (global.drv_count == 0) {
412                 wpa_printf(MSG_ERROR, "No drivers enabled");
413                 return -1;
414         }
415         global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
416         if (global.drv_priv == NULL)
417                 return -1;
418
419         return 0;
420 }
421
422
423 static void hostapd_global_deinit(const char *pid_file)
424 {
425         int i;
426
427         for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
428                 if (!global.drv_priv[i])
429                         continue;
430                 wpa_drivers[i]->global_deinit(global.drv_priv[i]);
431         }
432         os_free(global.drv_priv);
433         global.drv_priv = NULL;
434
435 #ifdef EAP_SERVER_TNC
436         tncs_global_deinit();
437 #endif /* EAP_SERVER_TNC */
438
439         random_deinit();
440
441         eloop_destroy();
442
443 #ifndef CONFIG_NATIVE_WINDOWS
444         closelog();
445 #endif /* CONFIG_NATIVE_WINDOWS */
446
447         eap_server_unregister_methods();
448
449         os_daemonize_terminate(pid_file);
450 }
451
452
453 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
454                               const char *pid_file)
455 {
456 #ifdef EAP_SERVER_TNC
457         int tnc = 0;
458         size_t i, k;
459
460         for (i = 0; !tnc && i < ifaces->count; i++) {
461                 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
462                         if (ifaces->iface[i]->bss[0]->conf->tnc) {
463                                 tnc++;
464                                 break;
465                         }
466                 }
467         }
468
469         if (tnc && tncs_global_init() < 0) {
470                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
471                 return -1;
472         }
473 #endif /* EAP_SERVER_TNC */
474
475         if (daemonize && os_daemonize(pid_file)) {
476                 perror("daemon");
477                 return -1;
478         }
479
480         eloop_run();
481
482         return 0;
483 }
484
485
486 static void show_version(void)
487 {
488         fprintf(stderr,
489                 "hostapd v" VERSION_STR "\n"
490                 "User space daemon for IEEE 802.11 AP management,\n"
491                 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
492                 "Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi> "
493                 "and contributors\n");
494 }
495
496
497 static void usage(void)
498 {
499         show_version();
500         fprintf(stderr,
501                 "\n"
502                 "usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
503                 "\\\n"
504                 "         [-g <global ctrl_iface>] [-G <group>] \\\n"
505                 "         <configuration file(s)>\n"
506                 "\n"
507                 "options:\n"
508                 "   -h   show this usage\n"
509                 "   -d   show more debug messages (-dd for even more)\n"
510                 "   -B   run daemon in the background\n"
511                 "   -e   entropy file\n"
512                 "   -g   global control interface path\n"
513                 "   -G   group for control interfaces\n"
514                 "   -P   PID file\n"
515                 "   -K   include key data in debug messages\n"
516 #ifdef CONFIG_DEBUG_FILE
517                 "   -f   log output to debug file instead of stdout\n"
518 #endif /* CONFIG_DEBUG_FILE */
519                 "   -t   include timestamps in some debug messages\n"
520                 "   -v   show hostapd version\n");
521
522         exit(1);
523 }
524
525
526 static const char * hostapd_msg_ifname_cb(void *ctx)
527 {
528         struct hostapd_data *hapd = ctx;
529         if (hapd && hapd->iconf && hapd->iconf->bss)
530                 return hapd->iconf->bss->iface;
531         return NULL;
532 }
533
534
535 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
536                                          const char *path)
537 {
538         char *pos;
539         os_free(interfaces->global_iface_path);
540         interfaces->global_iface_path = os_strdup(path);
541         if (interfaces->global_iface_path == NULL)
542                 return -1;
543         pos = os_strrchr(interfaces->global_iface_path, '/');
544         if (pos == NULL) {
545                 wpa_printf(MSG_ERROR, "No '/' in the global control interface "
546                            "file");
547                 os_free(interfaces->global_iface_path);
548                 interfaces->global_iface_path = NULL;
549                 return -1;
550         }
551
552         *pos = '\0';
553         interfaces->global_iface_name = pos + 1;
554
555         return 0;
556 }
557
558
559 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
560                                         const char *group)
561 {
562 #ifndef CONFIG_NATIVE_WINDOWS
563         struct group *grp;
564         grp = getgrnam(group);
565         if (grp == NULL) {
566                 wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
567                 return -1;
568         }
569         interfaces->ctrl_iface_group = grp->gr_gid;
570 #endif /* CONFIG_NATIVE_WINDOWS */
571         return 0;
572 }
573
574
575 int main(int argc, char *argv[])
576 {
577         struct hapd_interfaces interfaces;
578         int ret = 1;
579         size_t i;
580         int c, debug = 0, daemonize = 0;
581         char *pid_file = NULL;
582         const char *log_file = NULL;
583         const char *entropy_file = NULL;
584
585         if (os_program_init())
586                 return -1;
587
588         os_memset(&interfaces, 0, sizeof(interfaces));
589         interfaces.reload_config = hostapd_reload_config;
590         interfaces.config_read_cb = hostapd_config_read;
591         interfaces.for_each_interface = hostapd_for_each_interface;
592         interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
593         interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
594         interfaces.driver_init = hostapd_driver_init;
595         interfaces.global_iface_path = NULL;
596         interfaces.global_iface_name = NULL;
597         interfaces.global_ctrl_sock = -1;
598
599         for (;;) {
600                 c = getopt(argc, argv, "Bde:f:hKP:tvg:G:");
601                 if (c < 0)
602                         break;
603                 switch (c) {
604                 case 'h':
605                         usage();
606                         break;
607                 case 'd':
608                         debug++;
609                         if (wpa_debug_level > 0)
610                                 wpa_debug_level--;
611                         break;
612                 case 'B':
613                         daemonize++;
614                         break;
615                 case 'e':
616                         entropy_file = optarg;
617                         break;
618                 case 'f':
619                         log_file = optarg;
620                         break;
621                 case 'K':
622                         wpa_debug_show_keys++;
623                         break;
624                 case 'P':
625                         os_free(pid_file);
626                         pid_file = os_rel2abs_path(optarg);
627                         break;
628                 case 't':
629                         wpa_debug_timestamp++;
630                         break;
631                 case 'v':
632                         show_version();
633                         exit(1);
634                         break;
635                 case 'g':
636                         if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
637                                 return -1;
638                         break;
639                 case 'G':
640                         if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
641                                 return -1;
642                         break;
643                 default:
644                         usage();
645                         break;
646                 }
647         }
648
649         if (optind == argc && interfaces.global_iface_path == NULL)
650                 usage();
651
652         wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
653
654         if (log_file)
655                 wpa_debug_open_file(log_file);
656
657         interfaces.count = argc - optind;
658         if (interfaces.count) {
659                 interfaces.iface = os_calloc(interfaces.count,
660                                              sizeof(struct hostapd_iface *));
661                 if (interfaces.iface == NULL) {
662                         wpa_printf(MSG_ERROR, "malloc failed");
663                         return -1;
664                 }
665         }
666
667         if (hostapd_global_init(&interfaces, entropy_file)) {
668                 wpa_printf(MSG_ERROR, "Failed to initilize global context");
669                 return -1;
670         }
671
672         /* Initialize interfaces */
673         for (i = 0; i < interfaces.count; i++) {
674                 interfaces.iface[i] = hostapd_interface_init(&interfaces,
675                                                              argv[optind + i],
676                                                              debug);
677                 if (!interfaces.iface[i]) {
678                         wpa_printf(MSG_ERROR, "Failed to initialize interface");
679                         goto out;
680                 }
681         }
682
683         hostapd_global_ctrl_iface_init(&interfaces);
684
685         if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
686                 wpa_printf(MSG_ERROR, "Failed to start eloop");
687                 goto out;
688         }
689
690         ret = 0;
691
692  out:
693         hostapd_global_ctrl_iface_deinit(&interfaces);
694         /* Deinitialize all interfaces */
695         for (i = 0; i < interfaces.count; i++)
696                 hostapd_interface_deinit_free(interfaces.iface[i]);
697         os_free(interfaces.iface);
698
699         hostapd_global_deinit(pid_file);
700         os_free(pid_file);
701
702         if (log_file)
703                 wpa_debug_close_file();
704
705         os_program_deinit();
706
707         return ret;
708 }