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WPS: Allow pending WPS operation to be cancelled
[thirdparty/hostap.git] / src / wps / wps_registrar.c
1 /*
2 * Wi-Fi Protected Setup - Registrar
3 * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "utils/includes.h"
16
17 #include "utils/common.h"
18 #include "utils/base64.h"
19 #include "utils/eloop.h"
20 #include "utils/uuid.h"
21 #include "utils/list.h"
22 #include "crypto/crypto.h"
23 #include "crypto/sha256.h"
24 #include "common/ieee802_11_defs.h"
25 #include "wps_i.h"
26 #include "wps_dev_attr.h"
27 #include "wps_upnp.h"
28 #include "wps_upnp_i.h"
29
30 #ifndef CONFIG_WPS_STRICT
31 #define WPS_WORKAROUNDS
32 #endif /* CONFIG_WPS_STRICT */
33
34 struct wps_uuid_pin {
35 struct dl_list list;
36 u8 uuid[WPS_UUID_LEN];
37 int wildcard_uuid;
38 u8 *pin;
39 size_t pin_len;
40 #define PIN_LOCKED BIT(0)
41 #define PIN_EXPIRES BIT(1)
42 int flags;
43 struct os_time expiration;
44 u8 enrollee_addr[ETH_ALEN];
45 };
46
47
48 static void wps_free_pin(struct wps_uuid_pin *pin)
49 {
50 os_free(pin->pin);
51 os_free(pin);
52 }
53
54
55 static void wps_remove_pin(struct wps_uuid_pin *pin)
56 {
57 dl_list_del(&pin->list);
58 wps_free_pin(pin);
59 }
60
61
62 static void wps_free_pins(struct dl_list *pins)
63 {
64 struct wps_uuid_pin *pin, *prev;
65 dl_list_for_each_safe(pin, prev, pins, struct wps_uuid_pin, list)
66 wps_remove_pin(pin);
67 }
68
69
70 struct wps_pbc_session {
71 struct wps_pbc_session *next;
72 u8 addr[ETH_ALEN];
73 u8 uuid_e[WPS_UUID_LEN];
74 struct os_time timestamp;
75 };
76
77
78 static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
79 {
80 struct wps_pbc_session *prev;
81
82 while (pbc) {
83 prev = pbc;
84 pbc = pbc->next;
85 os_free(prev);
86 }
87 }
88
89
90 struct wps_registrar_device {
91 struct wps_registrar_device *next;
92 struct wps_device_data dev;
93 u8 uuid[WPS_UUID_LEN];
94 };
95
96
97 struct wps_registrar {
98 struct wps_context *wps;
99
100 int pbc;
101 int selected_registrar;
102
103 int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *psk,
104 size_t psk_len);
105 int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
106 struct wpabuf *probe_resp_ie);
107 void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
108 const struct wps_device_data *dev);
109 void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
110 const u8 *uuid_e);
111 void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
112 u16 sel_reg_config_methods);
113 void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
114 const u8 *pri_dev_type, u16 config_methods,
115 u16 dev_password_id, u8 request_type,
116 const char *dev_name);
117 void *cb_ctx;
118
119 struct dl_list pins;
120 struct wps_pbc_session *pbc_sessions;
121
122 int skip_cred_build;
123 struct wpabuf *extra_cred;
124 int disable_auto_conf;
125 int sel_reg_union;
126 int sel_reg_dev_password_id_override;
127 int sel_reg_config_methods_override;
128 int static_wep_only;
129
130 struct wps_registrar_device *devices;
131
132 int force_pbc_overlap;
133
134 u8 authorized_macs[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
135 u8 authorized_macs_union[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
136 };
137
138
139 static int wps_set_ie(struct wps_registrar *reg);
140 static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx);
141 static void wps_registrar_set_selected_timeout(void *eloop_ctx,
142 void *timeout_ctx);
143
144
145 static void wps_registrar_add_authorized_mac(struct wps_registrar *reg,
146 const u8 *addr)
147 {
148 int i;
149 wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC " MACSTR,
150 MAC2STR(addr));
151 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
152 if (os_memcmp(reg->authorized_macs[i], addr, ETH_ALEN) == 0) {
153 wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was "
154 "already in the list");
155 return; /* already in list */
156 }
157 for (i = WPS_MAX_AUTHORIZED_MACS - 1; i > 0; i--)
158 os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i - 1],
159 ETH_ALEN);
160 os_memcpy(reg->authorized_macs[0], addr, ETH_ALEN);
161 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
162 (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
163 }
164
165
166 static void wps_registrar_remove_authorized_mac(struct wps_registrar *reg,
167 const u8 *addr)
168 {
169 int i;
170 wpa_printf(MSG_DEBUG, "WPS: Remove authorized MAC " MACSTR,
171 MAC2STR(addr));
172 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++) {
173 if (os_memcmp(reg->authorized_macs, addr, ETH_ALEN) == 0)
174 break;
175 }
176 if (i == WPS_MAX_AUTHORIZED_MACS) {
177 wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was not in the "
178 "list");
179 return; /* not in the list */
180 }
181 for (; i + 1 < WPS_MAX_AUTHORIZED_MACS; i++)
182 os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i + 1],
183 ETH_ALEN);
184 os_memset(reg->authorized_macs[WPS_MAX_AUTHORIZED_MACS - 1], 0,
185 ETH_ALEN);
186 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
187 (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
188 }
189
190
191 static void wps_free_devices(struct wps_registrar_device *dev)
192 {
193 struct wps_registrar_device *prev;
194
195 while (dev) {
196 prev = dev;
197 dev = dev->next;
198 wps_device_data_free(&prev->dev);
199 os_free(prev);
200 }
201 }
202
203
204 static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
205 const u8 *addr)
206 {
207 struct wps_registrar_device *dev;
208
209 for (dev = reg->devices; dev; dev = dev->next) {
210 if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
211 return dev;
212 }
213 return NULL;
214 }
215
216
217 static void wps_device_clone_data(struct wps_device_data *dst,
218 struct wps_device_data *src)
219 {
220 os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
221 os_memcpy(dst->pri_dev_type, src->pri_dev_type, WPS_DEV_TYPE_LEN);
222
223 #define WPS_STRDUP(n) \
224 os_free(dst->n); \
225 dst->n = src->n ? os_strdup(src->n) : NULL
226
227 WPS_STRDUP(device_name);
228 WPS_STRDUP(manufacturer);
229 WPS_STRDUP(model_name);
230 WPS_STRDUP(model_number);
231 WPS_STRDUP(serial_number);
232 #undef WPS_STRDUP
233 }
234
235
236 int wps_device_store(struct wps_registrar *reg,
237 struct wps_device_data *dev, const u8 *uuid)
238 {
239 struct wps_registrar_device *d;
240
241 d = wps_device_get(reg, dev->mac_addr);
242 if (d == NULL) {
243 d = os_zalloc(sizeof(*d));
244 if (d == NULL)
245 return -1;
246 d->next = reg->devices;
247 reg->devices = d;
248 }
249
250 wps_device_clone_data(&d->dev, dev);
251 os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
252
253 return 0;
254 }
255
256
257 static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
258 const u8 *addr, const u8 *uuid_e)
259 {
260 struct wps_pbc_session *pbc, *prev = NULL;
261 struct os_time now;
262
263 os_get_time(&now);
264
265 pbc = reg->pbc_sessions;
266 while (pbc) {
267 if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
268 os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
269 if (prev)
270 prev->next = pbc->next;
271 else
272 reg->pbc_sessions = pbc->next;
273 break;
274 }
275 prev = pbc;
276 pbc = pbc->next;
277 }
278
279 if (!pbc) {
280 pbc = os_zalloc(sizeof(*pbc));
281 if (pbc == NULL)
282 return;
283 os_memcpy(pbc->addr, addr, ETH_ALEN);
284 if (uuid_e)
285 os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
286 }
287
288 pbc->next = reg->pbc_sessions;
289 reg->pbc_sessions = pbc;
290 pbc->timestamp = now;
291
292 /* remove entries that have timed out */
293 prev = pbc;
294 pbc = pbc->next;
295
296 while (pbc) {
297 if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME) {
298 prev->next = NULL;
299 wps_free_pbc_sessions(pbc);
300 break;
301 }
302 prev = pbc;
303 pbc = pbc->next;
304 }
305 }
306
307
308 static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
309 const u8 *addr, const u8 *uuid_e)
310 {
311 struct wps_pbc_session *pbc, *prev = NULL;
312
313 pbc = reg->pbc_sessions;
314 while (pbc) {
315 if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
316 os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
317 if (prev)
318 prev->next = pbc->next;
319 else
320 reg->pbc_sessions = pbc->next;
321 os_free(pbc);
322 break;
323 }
324 prev = pbc;
325 pbc = pbc->next;
326 }
327 }
328
329
330 int wps_registrar_pbc_overlap(struct wps_registrar *reg,
331 const u8 *addr, const u8 *uuid_e)
332 {
333 int count = 0;
334 struct wps_pbc_session *pbc;
335 struct os_time now;
336
337 os_get_time(&now);
338
339 for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
340 if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME)
341 break;
342 if (addr == NULL || os_memcmp(addr, pbc->addr, ETH_ALEN) ||
343 uuid_e == NULL ||
344 os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN))
345 count++;
346 }
347
348 if (addr || uuid_e)
349 count++;
350
351 return count > 1 ? 1 : 0;
352 }
353
354
355 static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
356 {
357 wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
358 wps->wps_state);
359 wpabuf_put_be16(msg, ATTR_WPS_STATE);
360 wpabuf_put_be16(msg, 1);
361 wpabuf_put_u8(msg, wps->wps_state);
362 return 0;
363 }
364
365
366 #ifdef CONFIG_WPS_UPNP
367 static void wps_registrar_free_pending_m2(struct wps_context *wps)
368 {
369 struct upnp_pending_message *p, *p2, *prev = NULL;
370 p = wps->upnp_msgs;
371 while (p) {
372 if (p->type == WPS_M2 || p->type == WPS_M2D) {
373 if (prev == NULL)
374 wps->upnp_msgs = p->next;
375 else
376 prev->next = p->next;
377 wpa_printf(MSG_DEBUG, "WPS UPnP: Drop pending M2/M2D");
378 p2 = p;
379 p = p->next;
380 wpabuf_free(p2->msg);
381 os_free(p2);
382 continue;
383 }
384 prev = p;
385 p = p->next;
386 }
387 }
388 #endif /* CONFIG_WPS_UPNP */
389
390
391 static int wps_build_ap_setup_locked(struct wps_context *wps,
392 struct wpabuf *msg)
393 {
394 if (wps->ap_setup_locked) {
395 wpa_printf(MSG_DEBUG, "WPS: * AP Setup Locked");
396 wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
397 wpabuf_put_be16(msg, 1);
398 wpabuf_put_u8(msg, 1);
399 }
400 return 0;
401 }
402
403
404 static int wps_build_selected_registrar(struct wps_registrar *reg,
405 struct wpabuf *msg)
406 {
407 if (!reg->sel_reg_union)
408 return 0;
409 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
410 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
411 wpabuf_put_be16(msg, 1);
412 wpabuf_put_u8(msg, 1);
413 return 0;
414 }
415
416
417 static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
418 struct wpabuf *msg)
419 {
420 u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
421 if (!reg->sel_reg_union)
422 return 0;
423 if (reg->sel_reg_dev_password_id_override >= 0)
424 id = reg->sel_reg_dev_password_id_override;
425 wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
426 wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
427 wpabuf_put_be16(msg, 2);
428 wpabuf_put_be16(msg, id);
429 return 0;
430 }
431
432
433 static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
434 {
435 *methods |= WPS_CONFIG_PUSHBUTTON;
436 #ifdef CONFIG_WPS2
437 if (conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON)
438 *methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
439 if (conf_methods & WPS_CONFIG_PHY_PUSHBUTTON)
440 *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
441 if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
442 WPS_CONFIG_VIRT_PUSHBUTTON ||
443 (*methods & WPS_CONFIG_PHY_PUSHBUTTON) !=
444 WPS_CONFIG_PHY_PUSHBUTTON) {
445 /*
446 * Required to include virtual/physical flag, but we were not
447 * configured with push button type, so have to default to one
448 * of them.
449 */
450 *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
451 }
452 #endif /* CONFIG_WPS2 */
453 }
454
455
456 static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
457 struct wpabuf *msg)
458 {
459 u16 methods;
460 if (!reg->sel_reg_union)
461 return 0;
462 methods = reg->wps->config_methods;
463 methods &= ~WPS_CONFIG_PUSHBUTTON;
464 #ifdef CONFIG_WPS2
465 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
466 WPS_CONFIG_PHY_PUSHBUTTON);
467 #endif /* CONFIG_WPS2 */
468 if (reg->pbc)
469 wps_set_pushbutton(&methods, reg->wps->config_methods);
470 if (reg->sel_reg_config_methods_override >= 0)
471 methods = reg->sel_reg_config_methods_override;
472 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
473 methods);
474 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
475 wpabuf_put_be16(msg, 2);
476 wpabuf_put_be16(msg, methods);
477 return 0;
478 }
479
480
481 static int wps_build_probe_config_methods(struct wps_registrar *reg,
482 struct wpabuf *msg)
483 {
484 u16 methods;
485 /*
486 * These are the methods that the AP supports as an Enrollee for adding
487 * external Registrars.
488 */
489 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
490 #ifdef CONFIG_WPS2
491 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
492 WPS_CONFIG_PHY_PUSHBUTTON);
493 #endif /* CONFIG_WPS2 */
494 wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
495 wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
496 wpabuf_put_be16(msg, 2);
497 wpabuf_put_be16(msg, methods);
498 return 0;
499 }
500
501
502 static int wps_build_config_methods_r(struct wps_registrar *reg,
503 struct wpabuf *msg)
504 {
505 u16 methods;
506 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
507 #ifdef CONFIG_WPS2
508 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
509 WPS_CONFIG_PHY_PUSHBUTTON);
510 #endif /* CONFIG_WPS2 */
511 if (reg->pbc)
512 wps_set_pushbutton(&methods, reg->wps->config_methods);
513 return wps_build_config_methods(msg, methods);
514 }
515
516
517 const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count)
518 {
519 *count = 0;
520
521 #ifdef CONFIG_WPS2
522 while (*count < WPS_MAX_AUTHORIZED_MACS) {
523 if (is_zero_ether_addr(reg->authorized_macs_union[*count]))
524 break;
525 (*count)++;
526 }
527 #endif /* CONFIG_WPS2 */
528
529 return (const u8 *) reg->authorized_macs_union;
530 }
531
532
533 /**
534 * wps_registrar_init - Initialize WPS Registrar data
535 * @wps: Pointer to longterm WPS context
536 * @cfg: Registrar configuration
537 * Returns: Pointer to allocated Registrar data or %NULL on failure
538 *
539 * This function is used to initialize WPS Registrar functionality. It can be
540 * used for a single Registrar run (e.g., when run in a supplicant) or multiple
541 * runs (e.g., when run as an internal Registrar in an AP). Caller is
542 * responsible for freeing the returned data with wps_registrar_deinit() when
543 * Registrar functionality is not needed anymore.
544 */
545 struct wps_registrar *
546 wps_registrar_init(struct wps_context *wps,
547 const struct wps_registrar_config *cfg)
548 {
549 struct wps_registrar *reg = os_zalloc(sizeof(*reg));
550 if (reg == NULL)
551 return NULL;
552
553 dl_list_init(&reg->pins);
554 reg->wps = wps;
555 reg->new_psk_cb = cfg->new_psk_cb;
556 reg->set_ie_cb = cfg->set_ie_cb;
557 reg->pin_needed_cb = cfg->pin_needed_cb;
558 reg->reg_success_cb = cfg->reg_success_cb;
559 reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
560 reg->enrollee_seen_cb = cfg->enrollee_seen_cb;
561 reg->cb_ctx = cfg->cb_ctx;
562 reg->skip_cred_build = cfg->skip_cred_build;
563 if (cfg->extra_cred) {
564 reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
565 cfg->extra_cred_len);
566 if (reg->extra_cred == NULL) {
567 os_free(reg);
568 return NULL;
569 }
570 }
571 reg->disable_auto_conf = cfg->disable_auto_conf;
572 reg->sel_reg_dev_password_id_override = -1;
573 reg->sel_reg_config_methods_override = -1;
574 reg->static_wep_only = cfg->static_wep_only;
575
576 if (wps_set_ie(reg)) {
577 wps_registrar_deinit(reg);
578 return NULL;
579 }
580
581 return reg;
582 }
583
584
585 /**
586 * wps_registrar_deinit - Deinitialize WPS Registrar data
587 * @reg: Registrar data from wps_registrar_init()
588 */
589 void wps_registrar_deinit(struct wps_registrar *reg)
590 {
591 if (reg == NULL)
592 return;
593 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
594 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
595 wps_free_pins(&reg->pins);
596 wps_free_pbc_sessions(reg->pbc_sessions);
597 wpabuf_free(reg->extra_cred);
598 wps_free_devices(reg->devices);
599 os_free(reg);
600 }
601
602
603 /**
604 * wps_registrar_add_pin - Configure a new PIN for Registrar
605 * @reg: Registrar data from wps_registrar_init()
606 * @addr: Enrollee MAC address or %NULL if not known
607 * @uuid: UUID-E or %NULL for wildcard (any UUID)
608 * @pin: PIN (Device Password)
609 * @pin_len: Length of pin in octets
610 * @timeout: Time (in seconds) when the PIN will be invalidated; 0 = no timeout
611 * Returns: 0 on success, -1 on failure
612 */
613 int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *addr,
614 const u8 *uuid, const u8 *pin, size_t pin_len,
615 int timeout)
616 {
617 struct wps_uuid_pin *p;
618
619 p = os_zalloc(sizeof(*p));
620 if (p == NULL)
621 return -1;
622 if (addr)
623 os_memcpy(p->enrollee_addr, addr, ETH_ALEN);
624 if (uuid == NULL)
625 p->wildcard_uuid = 1;
626 else
627 os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
628 p->pin = os_malloc(pin_len);
629 if (p->pin == NULL) {
630 os_free(p);
631 return -1;
632 }
633 os_memcpy(p->pin, pin, pin_len);
634 p->pin_len = pin_len;
635
636 if (timeout) {
637 p->flags |= PIN_EXPIRES;
638 os_get_time(&p->expiration);
639 p->expiration.sec += timeout;
640 }
641
642 dl_list_add(&reg->pins, &p->list);
643
644 wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
645 timeout);
646 wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
647 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
648 reg->selected_registrar = 1;
649 reg->pbc = 0;
650 if (addr)
651 wps_registrar_add_authorized_mac(reg, addr);
652 else
653 wps_registrar_add_authorized_mac(
654 reg, (u8 *) "\xff\xff\xff\xff\xff\xff");
655 wps_registrar_selected_registrar_changed(reg);
656 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
657 eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
658 wps_registrar_set_selected_timeout,
659 reg, NULL);
660
661 return 0;
662 }
663
664
665 static void wps_registrar_remove_pin(struct wps_registrar *reg,
666 struct wps_uuid_pin *pin)
667 {
668 u8 *addr;
669 u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
670
671 if (is_zero_ether_addr(pin->enrollee_addr))
672 addr = bcast;
673 else
674 addr = pin->enrollee_addr;
675 wps_registrar_remove_authorized_mac(reg, addr);
676 wps_remove_pin(pin);
677 wps_registrar_selected_registrar_changed(reg);
678 }
679
680
681 static void wps_registrar_expire_pins(struct wps_registrar *reg)
682 {
683 struct wps_uuid_pin *pin, *prev;
684 struct os_time now;
685
686 os_get_time(&now);
687 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
688 {
689 if ((pin->flags & PIN_EXPIRES) &&
690 os_time_before(&pin->expiration, &now)) {
691 wpa_hexdump(MSG_DEBUG, "WPS: Expired PIN for UUID",
692 pin->uuid, WPS_UUID_LEN);
693 wps_registrar_remove_pin(reg, pin);
694 }
695 }
696 }
697
698
699 /**
700 * wps_registrar_invalidate_wildcard_pin - Invalidate a wildcard PIN
701 * @reg: Registrar data from wps_registrar_init()
702 * Returns: 0 on success, -1 if not wildcard PIN is enabled
703 */
704 static int wps_registrar_invalidate_wildcard_pin(struct wps_registrar *reg)
705 {
706 struct wps_uuid_pin *pin, *prev;
707
708 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
709 {
710 if (pin->wildcard_uuid) {
711 wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
712 pin->uuid, WPS_UUID_LEN);
713 wps_registrar_remove_pin(reg, pin);
714 return 0;
715 }
716 }
717
718 return -1;
719 }
720
721
722 /**
723 * wps_registrar_invalidate_pin - Invalidate a PIN for a specific UUID-E
724 * @reg: Registrar data from wps_registrar_init()
725 * @uuid: UUID-E
726 * Returns: 0 on success, -1 on failure (e.g., PIN not found)
727 */
728 int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
729 {
730 struct wps_uuid_pin *pin, *prev;
731
732 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
733 {
734 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
735 wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
736 pin->uuid, WPS_UUID_LEN);
737 wps_registrar_remove_pin(reg, pin);
738 return 0;
739 }
740 }
741
742 return -1;
743 }
744
745
746 static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
747 const u8 *uuid, size_t *pin_len)
748 {
749 struct wps_uuid_pin *pin, *found = NULL;
750
751 wps_registrar_expire_pins(reg);
752
753 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
754 if (!pin->wildcard_uuid &&
755 os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
756 found = pin;
757 break;
758 }
759 }
760
761 if (!found) {
762 /* Check for wildcard UUIDs since none of the UUID-specific
763 * PINs matched */
764 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
765 if (pin->wildcard_uuid == 1) {
766 wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
767 "PIN. Assigned it for this UUID-E");
768 pin->wildcard_uuid = 2;
769 os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
770 found = pin;
771 break;
772 }
773 }
774 }
775
776 if (!found)
777 return NULL;
778
779 /*
780 * Lock the PIN to avoid attacks based on concurrent re-use of the PIN
781 * that could otherwise avoid PIN invalidations.
782 */
783 if (found->flags & PIN_LOCKED) {
784 wpa_printf(MSG_DEBUG, "WPS: Selected PIN locked - do not "
785 "allow concurrent re-use");
786 return NULL;
787 }
788 *pin_len = found->pin_len;
789 found->flags |= PIN_LOCKED;
790 return found->pin;
791 }
792
793
794 /**
795 * wps_registrar_unlock_pin - Unlock a PIN for a specific UUID-E
796 * @reg: Registrar data from wps_registrar_init()
797 * @uuid: UUID-E
798 * Returns: 0 on success, -1 on failure
799 *
800 * PINs are locked to enforce only one concurrent use. This function unlocks a
801 * PIN to allow it to be used again. If the specified PIN was configured using
802 * a wildcard UUID, it will be removed instead of allowing multiple uses.
803 */
804 int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
805 {
806 struct wps_uuid_pin *pin;
807
808 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
809 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
810 if (pin->wildcard_uuid == 2) {
811 wpa_printf(MSG_DEBUG, "WPS: Invalidating used "
812 "wildcard PIN");
813 return wps_registrar_invalidate_pin(reg, uuid);
814 }
815 pin->flags &= ~PIN_LOCKED;
816 return 0;
817 }
818 }
819
820 return -1;
821 }
822
823
824 static void wps_registrar_stop_pbc(struct wps_registrar *reg)
825 {
826 reg->selected_registrar = 0;
827 reg->pbc = 0;
828 wps_registrar_selected_registrar_changed(reg);
829 }
830
831
832 static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx)
833 {
834 struct wps_registrar *reg = eloop_ctx;
835
836 wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
837 wps_pbc_timeout_event(reg->wps);
838 wps_registrar_stop_pbc(reg);
839 }
840
841
842 /**
843 * wps_registrar_button_pushed - Notify Registrar that AP button was pushed
844 * @reg: Registrar data from wps_registrar_init()
845 * Returns: 0 on success, -1 on failure
846 *
847 * This function is called on an AP when a push button is pushed to activate
848 * PBC mode. The PBC mode will be stopped after walk time (2 minutes) timeout
849 * or when a PBC registration is completed.
850 */
851 int wps_registrar_button_pushed(struct wps_registrar *reg)
852 {
853 if (wps_registrar_pbc_overlap(reg, NULL, NULL)) {
854 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - do not start PBC "
855 "mode");
856 wps_pbc_overlap_event(reg->wps);
857 return -1;
858 }
859 wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
860 reg->force_pbc_overlap = 0;
861 reg->selected_registrar = 1;
862 reg->pbc = 1;
863 wps_registrar_selected_registrar_changed(reg);
864
865 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
866 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
867 reg, NULL);
868 return 0;
869 }
870
871
872 static void wps_registrar_pbc_completed(struct wps_registrar *reg)
873 {
874 wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
875 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
876 wps_registrar_stop_pbc(reg);
877 }
878
879
880 static void wps_registrar_pin_completed(struct wps_registrar *reg)
881 {
882 wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
883 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
884 reg->selected_registrar = 0;
885 wps_registrar_selected_registrar_changed(reg);
886 }
887
888
889 int wps_registrar_wps_cancel(struct wps_registrar *reg)
890 {
891 if (reg->pbc) {
892 wpa_printf(MSG_DEBUG, "WPS: PBC is set - cancelling it");
893 wps_registrar_pbc_timeout(reg, NULL);
894 return 1;
895 } else if (reg->selected_registrar) {
896 /* PIN Method */
897 wpa_printf(MSG_DEBUG, "WPS: PIN is set - cancelling it");
898 wps_registrar_pin_completed(reg);
899 wps_registrar_invalidate_wildcard_pin(reg);
900 return 1;
901 }
902 return 0;
903 }
904
905
906 /**
907 * wps_registrar_probe_req_rx - Notify Registrar of Probe Request
908 * @reg: Registrar data from wps_registrar_init()
909 * @addr: MAC address of the Probe Request sender
910 * @wps_data: WPS IE contents
911 *
912 * This function is called on an AP when a Probe Request with WPS IE is
913 * received. This is used to track PBC mode use and to detect possible overlap
914 * situation with other WPS APs.
915 */
916 void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
917 const struct wpabuf *wps_data,
918 int p2p_wildcard)
919 {
920 struct wps_parse_attr attr;
921
922 wpa_hexdump_buf(MSG_MSGDUMP,
923 "WPS: Probe Request with WPS data received",
924 wps_data);
925
926 if (wps_parse_msg(wps_data, &attr) < 0)
927 return;
928
929 if (attr.config_methods == NULL) {
930 wpa_printf(MSG_DEBUG, "WPS: No Config Methods attribute in "
931 "Probe Request");
932 return;
933 }
934
935 if (attr.dev_password_id == NULL) {
936 wpa_printf(MSG_DEBUG, "WPS: No Device Password Id attribute "
937 "in Probe Request");
938 return;
939 }
940
941 if (reg->enrollee_seen_cb && attr.uuid_e &&
942 attr.primary_dev_type && attr.request_type && !p2p_wildcard) {
943 char *dev_name = NULL;
944 if (attr.dev_name) {
945 dev_name = os_zalloc(attr.dev_name_len + 1);
946 if (dev_name) {
947 os_memcpy(dev_name, attr.dev_name,
948 attr.dev_name_len);
949 }
950 }
951 reg->enrollee_seen_cb(reg->cb_ctx, addr, attr.uuid_e,
952 attr.primary_dev_type,
953 WPA_GET_BE16(attr.config_methods),
954 WPA_GET_BE16(attr.dev_password_id),
955 *attr.request_type, dev_name);
956 os_free(dev_name);
957 }
958
959 if (WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
960 return; /* Not PBC */
961
962 wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
963 MACSTR, MAC2STR(addr));
964 if (attr.uuid_e == NULL) {
965 wpa_printf(MSG_DEBUG, "WPS: Invalid Probe Request WPS IE: No "
966 "UUID-E included");
967 return;
968 }
969
970 wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
971 if (wps_registrar_pbc_overlap(reg, addr, attr.uuid_e)) {
972 wpa_printf(MSG_DEBUG, "WPS: PBC session overlap detected");
973 reg->force_pbc_overlap = 1;
974 wps_pbc_overlap_event(reg->wps);
975 }
976 }
977
978
979 static int wps_cb_new_psk(struct wps_registrar *reg, const u8 *mac_addr,
980 const u8 *psk, size_t psk_len)
981 {
982 if (reg->new_psk_cb == NULL)
983 return 0;
984
985 return reg->new_psk_cb(reg->cb_ctx, mac_addr, psk, psk_len);
986 }
987
988
989 static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
990 const struct wps_device_data *dev)
991 {
992 if (reg->pin_needed_cb == NULL)
993 return;
994
995 reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
996 }
997
998
999 static void wps_cb_reg_success(struct wps_registrar *reg, const u8 *mac_addr,
1000 const u8 *uuid_e)
1001 {
1002 if (reg->reg_success_cb == NULL)
1003 return;
1004
1005 reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e);
1006 }
1007
1008
1009 static int wps_cb_set_ie(struct wps_registrar *reg, struct wpabuf *beacon_ie,
1010 struct wpabuf *probe_resp_ie)
1011 {
1012 return reg->set_ie_cb(reg->cb_ctx, beacon_ie, probe_resp_ie);
1013 }
1014
1015
1016 static void wps_cb_set_sel_reg(struct wps_registrar *reg)
1017 {
1018 u16 methods = 0;
1019 if (reg->set_sel_reg_cb == NULL)
1020 return;
1021
1022 if (reg->selected_registrar) {
1023 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
1024 #ifdef CONFIG_WPS2
1025 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
1026 WPS_CONFIG_PHY_PUSHBUTTON);
1027 #endif /* CONFIG_WPS2 */
1028 if (reg->pbc)
1029 wps_set_pushbutton(&methods, reg->wps->config_methods);
1030 }
1031
1032 wpa_printf(MSG_DEBUG, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
1033 "config_methods=0x%x pbc=%d methods=0x%x",
1034 reg->selected_registrar, reg->wps->config_methods,
1035 reg->pbc, methods);
1036
1037 reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
1038 reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
1039 methods);
1040 }
1041
1042
1043 static int wps_set_ie(struct wps_registrar *reg)
1044 {
1045 struct wpabuf *beacon;
1046 struct wpabuf *probe;
1047 const u8 *auth_macs;
1048 size_t count;
1049
1050 if (reg->set_ie_cb == NULL)
1051 return 0;
1052
1053 beacon = wpabuf_alloc(400);
1054 if (beacon == NULL)
1055 return -1;
1056 probe = wpabuf_alloc(500);
1057 if (probe == NULL) {
1058 wpabuf_free(beacon);
1059 return -1;
1060 }
1061
1062 auth_macs = wps_authorized_macs(reg, &count);
1063
1064 wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
1065
1066 if (wps_build_version(beacon) ||
1067 wps_build_wps_state(reg->wps, beacon) ||
1068 wps_build_ap_setup_locked(reg->wps, beacon) ||
1069 wps_build_selected_registrar(reg, beacon) ||
1070 wps_build_sel_reg_dev_password_id(reg, beacon) ||
1071 wps_build_sel_reg_config_methods(reg, beacon) ||
1072 wps_build_wfa_ext(beacon, 0, auth_macs, count)) {
1073 wpabuf_free(beacon);
1074 wpabuf_free(probe);
1075 return -1;
1076 }
1077
1078 wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
1079
1080 if (wps_build_version(probe) ||
1081 wps_build_wps_state(reg->wps, probe) ||
1082 wps_build_ap_setup_locked(reg->wps, probe) ||
1083 wps_build_selected_registrar(reg, probe) ||
1084 wps_build_sel_reg_dev_password_id(reg, probe) ||
1085 wps_build_sel_reg_config_methods(reg, probe) ||
1086 wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
1087 WPS_RESP_REGISTRAR) ||
1088 wps_build_uuid_e(probe, reg->wps->uuid) ||
1089 wps_build_device_attrs(&reg->wps->dev, probe) ||
1090 wps_build_probe_config_methods(reg, probe) ||
1091 wps_build_rf_bands(&reg->wps->dev, probe) ||
1092 wps_build_wfa_ext(probe, 0, auth_macs, count)) {
1093 wpabuf_free(beacon);
1094 wpabuf_free(probe);
1095 return -1;
1096 }
1097
1098 #ifdef CONFIG_P2P
1099 if (wps_build_dev_name(&reg->wps->dev, beacon) ||
1100 wps_build_primary_dev_type(&reg->wps->dev, beacon)) {
1101 wpabuf_free(beacon);
1102 wpabuf_free(probe);
1103 return -1;
1104 }
1105 #endif /* CONFIG_P2P */
1106
1107 beacon = wps_ie_encapsulate(beacon);
1108 probe = wps_ie_encapsulate(probe);
1109
1110 if (!beacon || !probe) {
1111 wpabuf_free(beacon);
1112 wpabuf_free(probe);
1113 return -1;
1114 }
1115
1116 if (reg->static_wep_only) {
1117 /*
1118 * Windows XP and Vista clients can get confused about
1119 * EAP-Identity/Request when they probe the network with
1120 * EAPOL-Start. In such a case, they may assume the network is
1121 * using IEEE 802.1X and prompt user for a certificate while
1122 * the correct (non-WPS) behavior would be to ask for the
1123 * static WEP key. As a workaround, use Microsoft Provisioning
1124 * IE to advertise that legacy 802.1X is not supported.
1125 */
1126 const u8 ms_wps[7] = {
1127 WLAN_EID_VENDOR_SPECIFIC, 5,
1128 /* Microsoft Provisioning IE (00:50:f2:5) */
1129 0x00, 0x50, 0xf2, 5,
1130 0x00 /* no legacy 802.1X or MS WPS */
1131 };
1132 wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
1133 "into Beacon/Probe Response frames");
1134 wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
1135 wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
1136 }
1137
1138 return wps_cb_set_ie(reg, beacon, probe);
1139 }
1140
1141
1142 static int wps_get_dev_password(struct wps_data *wps)
1143 {
1144 const u8 *pin;
1145 size_t pin_len = 0;
1146
1147 os_free(wps->dev_password);
1148 wps->dev_password = NULL;
1149
1150 if (wps->pbc) {
1151 wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
1152 pin = (const u8 *) "00000000";
1153 pin_len = 8;
1154 } else {
1155 pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
1156 &pin_len);
1157 }
1158 if (pin == NULL) {
1159 wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
1160 "the Enrollee");
1161 wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1162 &wps->peer_dev);
1163 return -1;
1164 }
1165
1166 wps->dev_password = os_malloc(pin_len);
1167 if (wps->dev_password == NULL)
1168 return -1;
1169 os_memcpy(wps->dev_password, pin, pin_len);
1170 wps->dev_password_len = pin_len;
1171
1172 return 0;
1173 }
1174
1175
1176 static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1177 {
1178 wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
1179 wpabuf_put_be16(msg, ATTR_UUID_R);
1180 wpabuf_put_be16(msg, WPS_UUID_LEN);
1181 wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1182 return 0;
1183 }
1184
1185
1186 static int wps_build_r_hash(struct wps_data *wps, struct wpabuf *msg)
1187 {
1188 u8 *hash;
1189 const u8 *addr[4];
1190 size_t len[4];
1191
1192 if (os_get_random(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1193 return -1;
1194 wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1195 wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1196 wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1197
1198 if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
1199 wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
1200 "R-Hash derivation");
1201 return -1;
1202 }
1203
1204 wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
1205 wpabuf_put_be16(msg, ATTR_R_HASH1);
1206 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1207 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1208 /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1209 addr[0] = wps->snonce;
1210 len[0] = WPS_SECRET_NONCE_LEN;
1211 addr[1] = wps->psk1;
1212 len[1] = WPS_PSK_LEN;
1213 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1214 len[2] = wpabuf_len(wps->dh_pubkey_e);
1215 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1216 len[3] = wpabuf_len(wps->dh_pubkey_r);
1217 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1218 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1219
1220 wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
1221 wpabuf_put_be16(msg, ATTR_R_HASH2);
1222 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1223 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1224 /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1225 addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1226 addr[1] = wps->psk2;
1227 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1228 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1229
1230 return 0;
1231 }
1232
1233
1234 static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1235 {
1236 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
1237 wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1238 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1239 wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1240 return 0;
1241 }
1242
1243
1244 static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1245 {
1246 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
1247 wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1248 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1249 wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1250 WPS_SECRET_NONCE_LEN);
1251 return 0;
1252 }
1253
1254
1255 static int wps_build_cred_network_idx(struct wpabuf *msg,
1256 const struct wps_credential *cred)
1257 {
1258 wpa_printf(MSG_DEBUG, "WPS: * Network Index");
1259 wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1260 wpabuf_put_be16(msg, 1);
1261 wpabuf_put_u8(msg, 1);
1262 return 0;
1263 }
1264
1265
1266 static int wps_build_cred_ssid(struct wpabuf *msg,
1267 const struct wps_credential *cred)
1268 {
1269 wpa_printf(MSG_DEBUG, "WPS: * SSID");
1270 wpabuf_put_be16(msg, ATTR_SSID);
1271 wpabuf_put_be16(msg, cred->ssid_len);
1272 wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1273 return 0;
1274 }
1275
1276
1277 static int wps_build_cred_auth_type(struct wpabuf *msg,
1278 const struct wps_credential *cred)
1279 {
1280 wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
1281 cred->auth_type);
1282 wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1283 wpabuf_put_be16(msg, 2);
1284 wpabuf_put_be16(msg, cred->auth_type);
1285 return 0;
1286 }
1287
1288
1289 static int wps_build_cred_encr_type(struct wpabuf *msg,
1290 const struct wps_credential *cred)
1291 {
1292 wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
1293 cred->encr_type);
1294 wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1295 wpabuf_put_be16(msg, 2);
1296 wpabuf_put_be16(msg, cred->encr_type);
1297 return 0;
1298 }
1299
1300
1301 static int wps_build_cred_network_key(struct wpabuf *msg,
1302 const struct wps_credential *cred)
1303 {
1304 wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%d)",
1305 (int) cred->key_len);
1306 wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1307 wpabuf_put_be16(msg, cred->key_len);
1308 wpabuf_put_data(msg, cred->key, cred->key_len);
1309 return 0;
1310 }
1311
1312
1313 static int wps_build_cred_mac_addr(struct wpabuf *msg,
1314 const struct wps_credential *cred)
1315 {
1316 wpa_printf(MSG_DEBUG, "WPS: * MAC Address (" MACSTR ")",
1317 MAC2STR(cred->mac_addr));
1318 wpabuf_put_be16(msg, ATTR_MAC_ADDR);
1319 wpabuf_put_be16(msg, ETH_ALEN);
1320 wpabuf_put_data(msg, cred->mac_addr, ETH_ALEN);
1321 return 0;
1322 }
1323
1324
1325 static int wps_build_credential(struct wpabuf *msg,
1326 const struct wps_credential *cred)
1327 {
1328 if (wps_build_cred_network_idx(msg, cred) ||
1329 wps_build_cred_ssid(msg, cred) ||
1330 wps_build_cred_auth_type(msg, cred) ||
1331 wps_build_cred_encr_type(msg, cred) ||
1332 wps_build_cred_network_key(msg, cred) ||
1333 wps_build_cred_mac_addr(msg, cred))
1334 return -1;
1335 return 0;
1336 }
1337
1338
1339 int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1340 {
1341 struct wpabuf *cred;
1342
1343 if (wps->wps->registrar->skip_cred_build)
1344 goto skip_cred_build;
1345
1346 wpa_printf(MSG_DEBUG, "WPS: * Credential");
1347 if (wps->use_cred) {
1348 os_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
1349 goto use_provided;
1350 }
1351 os_memset(&wps->cred, 0, sizeof(wps->cred));
1352
1353 os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1354 wps->cred.ssid_len = wps->wps->ssid_len;
1355
1356 /* Select the best authentication and encryption type */
1357 if (wps->auth_type & WPS_AUTH_WPA2PSK)
1358 wps->auth_type = WPS_AUTH_WPA2PSK;
1359 else if (wps->auth_type & WPS_AUTH_WPAPSK)
1360 wps->auth_type = WPS_AUTH_WPAPSK;
1361 else if (wps->auth_type & WPS_AUTH_OPEN)
1362 wps->auth_type = WPS_AUTH_OPEN;
1363 else if (wps->auth_type & WPS_AUTH_SHARED)
1364 wps->auth_type = WPS_AUTH_SHARED;
1365 else {
1366 wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1367 wps->auth_type);
1368 return -1;
1369 }
1370 wps->cred.auth_type = wps->auth_type;
1371
1372 if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1373 wps->auth_type == WPS_AUTH_WPAPSK) {
1374 if (wps->encr_type & WPS_ENCR_AES)
1375 wps->encr_type = WPS_ENCR_AES;
1376 else if (wps->encr_type & WPS_ENCR_TKIP)
1377 wps->encr_type = WPS_ENCR_TKIP;
1378 else {
1379 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1380 "type for WPA/WPA2");
1381 return -1;
1382 }
1383 } else {
1384 if (wps->encr_type & WPS_ENCR_WEP)
1385 wps->encr_type = WPS_ENCR_WEP;
1386 else if (wps->encr_type & WPS_ENCR_NONE)
1387 wps->encr_type = WPS_ENCR_NONE;
1388 else {
1389 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1390 "type for non-WPA/WPA2 mode");
1391 return -1;
1392 }
1393 }
1394 wps->cred.encr_type = wps->encr_type;
1395 /*
1396 * Set MAC address in the Credential to be the Enrollee's MAC address
1397 */
1398 os_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ETH_ALEN);
1399
1400 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1401 !wps->wps->registrar->disable_auto_conf) {
1402 u8 r[16];
1403 /* Generate a random passphrase */
1404 if (os_get_random(r, sizeof(r)) < 0)
1405 return -1;
1406 os_free(wps->new_psk);
1407 wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1408 if (wps->new_psk == NULL)
1409 return -1;
1410 wps->new_psk_len--; /* remove newline */
1411 while (wps->new_psk_len &&
1412 wps->new_psk[wps->new_psk_len - 1] == '=')
1413 wps->new_psk_len--;
1414 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1415 wps->new_psk, wps->new_psk_len);
1416 os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1417 wps->cred.key_len = wps->new_psk_len;
1418 } else if (wps->use_psk_key && wps->wps->psk_set) {
1419 char hex[65];
1420 wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
1421 wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
1422 os_memcpy(wps->cred.key, hex, 32 * 2);
1423 wps->cred.key_len = 32 * 2;
1424 } else if (wps->wps->network_key) {
1425 os_memcpy(wps->cred.key, wps->wps->network_key,
1426 wps->wps->network_key_len);
1427 wps->cred.key_len = wps->wps->network_key_len;
1428 } else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1429 char hex[65];
1430 /* Generate a random per-device PSK */
1431 os_free(wps->new_psk);
1432 wps->new_psk_len = 32;
1433 wps->new_psk = os_malloc(wps->new_psk_len);
1434 if (wps->new_psk == NULL)
1435 return -1;
1436 if (os_get_random(wps->new_psk, wps->new_psk_len) < 0) {
1437 os_free(wps->new_psk);
1438 wps->new_psk = NULL;
1439 return -1;
1440 }
1441 wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1442 wps->new_psk, wps->new_psk_len);
1443 wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1444 wps->new_psk_len);
1445 os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1446 wps->cred.key_len = wps->new_psk_len * 2;
1447 }
1448
1449 use_provided:
1450 #ifdef CONFIG_WPS_TESTING_EXTRA_CRED
1451 cred = wpabuf_alloc(200);
1452 if (cred) {
1453 struct wps_credential dummy;
1454 wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
1455 os_memset(&dummy, 0, sizeof(dummy));
1456 os_memcpy(dummy.ssid, "dummy", 5);
1457 dummy.ssid_len = 5;
1458 dummy.auth_type = WPS_AUTH_WPA2PSK;
1459 dummy.encr_type = WPS_ENCR_AES;
1460 os_memcpy(dummy.key, "dummy psk", 9);
1461 dummy.key_len = 9;
1462 os_memcpy(dummy.mac_addr, wps->mac_addr_e, ETH_ALEN);
1463 wps_build_credential(cred, &dummy);
1464 wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
1465
1466 wpabuf_put_be16(msg, ATTR_CRED);
1467 wpabuf_put_be16(msg, wpabuf_len(cred));
1468 wpabuf_put_buf(msg, cred);
1469
1470 wpabuf_free(cred);
1471 }
1472 #endif /* CONFIG_WPS_TESTING_EXTRA_CRED */
1473
1474 cred = wpabuf_alloc(200);
1475 if (cred == NULL)
1476 return -1;
1477
1478 if (wps_build_credential(cred, &wps->cred)) {
1479 wpabuf_free(cred);
1480 return -1;
1481 }
1482
1483 wpabuf_put_be16(msg, ATTR_CRED);
1484 wpabuf_put_be16(msg, wpabuf_len(cred));
1485 wpabuf_put_buf(msg, cred);
1486 wpabuf_free(cred);
1487
1488 skip_cred_build:
1489 if (wps->wps->registrar->extra_cred) {
1490 wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
1491 wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1492 }
1493
1494 return 0;
1495 }
1496
1497
1498 static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1499 {
1500 wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
1501
1502 if (wps_build_credential(msg, &wps->cred))
1503 return -1;
1504
1505 return 0;
1506 }
1507
1508
1509 static struct wpabuf * wps_build_m2(struct wps_data *wps)
1510 {
1511 struct wpabuf *msg;
1512
1513 if (os_get_random(wps->nonce_r, WPS_NONCE_LEN) < 0)
1514 return NULL;
1515 wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1516 wps->nonce_r, WPS_NONCE_LEN);
1517 wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1518
1519 wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1520 msg = wpabuf_alloc(1000);
1521 if (msg == NULL)
1522 return NULL;
1523
1524 if (wps_build_version(msg) ||
1525 wps_build_msg_type(msg, WPS_M2) ||
1526 wps_build_enrollee_nonce(wps, msg) ||
1527 wps_build_registrar_nonce(wps, msg) ||
1528 wps_build_uuid_r(wps, msg) ||
1529 wps_build_public_key(wps, msg) ||
1530 wps_derive_keys(wps) ||
1531 wps_build_auth_type_flags(wps, msg) ||
1532 wps_build_encr_type_flags(wps, msg) ||
1533 wps_build_conn_type_flags(wps, msg) ||
1534 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1535 wps_build_device_attrs(&wps->wps->dev, msg) ||
1536 wps_build_rf_bands(&wps->wps->dev, msg) ||
1537 wps_build_assoc_state(wps, msg) ||
1538 wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1539 wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1540 wps_build_os_version(&wps->wps->dev, msg) ||
1541 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1542 wps_build_authenticator(wps, msg)) {
1543 wpabuf_free(msg);
1544 return NULL;
1545 }
1546
1547 wps->int_reg = 1;
1548 wps->state = RECV_M3;
1549 return msg;
1550 }
1551
1552
1553 static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1554 {
1555 struct wpabuf *msg;
1556 u16 err = wps->config_error;
1557
1558 wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1559 msg = wpabuf_alloc(1000);
1560 if (msg == NULL)
1561 return NULL;
1562
1563 if (wps->wps->ap && wps->wps->ap_setup_locked &&
1564 err == WPS_CFG_NO_ERROR)
1565 err = WPS_CFG_SETUP_LOCKED;
1566
1567 if (wps_build_version(msg) ||
1568 wps_build_msg_type(msg, WPS_M2D) ||
1569 wps_build_enrollee_nonce(wps, msg) ||
1570 wps_build_registrar_nonce(wps, msg) ||
1571 wps_build_uuid_r(wps, msg) ||
1572 wps_build_auth_type_flags(wps, msg) ||
1573 wps_build_encr_type_flags(wps, msg) ||
1574 wps_build_conn_type_flags(wps, msg) ||
1575 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1576 wps_build_device_attrs(&wps->wps->dev, msg) ||
1577 wps_build_rf_bands(&wps->wps->dev, msg) ||
1578 wps_build_assoc_state(wps, msg) ||
1579 wps_build_config_error(msg, err) ||
1580 wps_build_os_version(&wps->wps->dev, msg) ||
1581 wps_build_wfa_ext(msg, 0, NULL, 0)) {
1582 wpabuf_free(msg);
1583 return NULL;
1584 }
1585
1586 wps->state = RECV_M2D_ACK;
1587 return msg;
1588 }
1589
1590
1591 static struct wpabuf * wps_build_m4(struct wps_data *wps)
1592 {
1593 struct wpabuf *msg, *plain;
1594
1595 wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1596
1597 wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
1598
1599 plain = wpabuf_alloc(200);
1600 if (plain == NULL)
1601 return NULL;
1602
1603 msg = wpabuf_alloc(1000);
1604 if (msg == NULL) {
1605 wpabuf_free(plain);
1606 return NULL;
1607 }
1608
1609 if (wps_build_version(msg) ||
1610 wps_build_msg_type(msg, WPS_M4) ||
1611 wps_build_enrollee_nonce(wps, msg) ||
1612 wps_build_r_hash(wps, msg) ||
1613 wps_build_r_snonce1(wps, plain) ||
1614 wps_build_key_wrap_auth(wps, plain) ||
1615 wps_build_encr_settings(wps, msg, plain) ||
1616 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1617 wps_build_authenticator(wps, msg)) {
1618 wpabuf_free(plain);
1619 wpabuf_free(msg);
1620 return NULL;
1621 }
1622 wpabuf_free(plain);
1623
1624 wps->state = RECV_M5;
1625 return msg;
1626 }
1627
1628
1629 static struct wpabuf * wps_build_m6(struct wps_data *wps)
1630 {
1631 struct wpabuf *msg, *plain;
1632
1633 wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1634
1635 plain = wpabuf_alloc(200);
1636 if (plain == NULL)
1637 return NULL;
1638
1639 msg = wpabuf_alloc(1000);
1640 if (msg == NULL) {
1641 wpabuf_free(plain);
1642 return NULL;
1643 }
1644
1645 if (wps_build_version(msg) ||
1646 wps_build_msg_type(msg, WPS_M6) ||
1647 wps_build_enrollee_nonce(wps, msg) ||
1648 wps_build_r_snonce2(wps, plain) ||
1649 wps_build_key_wrap_auth(wps, plain) ||
1650 wps_build_encr_settings(wps, msg, plain) ||
1651 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1652 wps_build_authenticator(wps, msg)) {
1653 wpabuf_free(plain);
1654 wpabuf_free(msg);
1655 return NULL;
1656 }
1657 wpabuf_free(plain);
1658
1659 wps->wps_pin_revealed = 1;
1660 wps->state = RECV_M7;
1661 return msg;
1662 }
1663
1664
1665 static struct wpabuf * wps_build_m8(struct wps_data *wps)
1666 {
1667 struct wpabuf *msg, *plain;
1668
1669 wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
1670
1671 plain = wpabuf_alloc(500);
1672 if (plain == NULL)
1673 return NULL;
1674
1675 msg = wpabuf_alloc(1000);
1676 if (msg == NULL) {
1677 wpabuf_free(plain);
1678 return NULL;
1679 }
1680
1681 if (wps_build_version(msg) ||
1682 wps_build_msg_type(msg, WPS_M8) ||
1683 wps_build_enrollee_nonce(wps, msg) ||
1684 ((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
1685 (!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
1686 wps_build_key_wrap_auth(wps, plain) ||
1687 wps_build_encr_settings(wps, msg, plain) ||
1688 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1689 wps_build_authenticator(wps, msg)) {
1690 wpabuf_free(plain);
1691 wpabuf_free(msg);
1692 return NULL;
1693 }
1694 wpabuf_free(plain);
1695
1696 wps->state = RECV_DONE;
1697 return msg;
1698 }
1699
1700
1701 static struct wpabuf * wps_build_wsc_ack(struct wps_data *wps)
1702 {
1703 struct wpabuf *msg;
1704
1705 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_ACK");
1706
1707 msg = wpabuf_alloc(1000);
1708 if (msg == NULL)
1709 return NULL;
1710
1711 if (wps_build_version(msg) ||
1712 wps_build_msg_type(msg, WPS_WSC_ACK) ||
1713 wps_build_enrollee_nonce(wps, msg) ||
1714 wps_build_registrar_nonce(wps, msg) ||
1715 wps_build_wfa_ext(msg, 0, NULL, 0)) {
1716 wpabuf_free(msg);
1717 return NULL;
1718 }
1719
1720 return msg;
1721 }
1722
1723
1724 static struct wpabuf * wps_build_wsc_nack(struct wps_data *wps)
1725 {
1726 struct wpabuf *msg;
1727
1728 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_NACK");
1729
1730 msg = wpabuf_alloc(1000);
1731 if (msg == NULL)
1732 return NULL;
1733
1734 if (wps_build_version(msg) ||
1735 wps_build_msg_type(msg, WPS_WSC_NACK) ||
1736 wps_build_enrollee_nonce(wps, msg) ||
1737 wps_build_registrar_nonce(wps, msg) ||
1738 wps_build_config_error(msg, wps->config_error) ||
1739 wps_build_wfa_ext(msg, 0, NULL, 0)) {
1740 wpabuf_free(msg);
1741 return NULL;
1742 }
1743
1744 return msg;
1745 }
1746
1747
1748 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
1749 enum wsc_op_code *op_code)
1750 {
1751 struct wpabuf *msg;
1752
1753 #ifdef CONFIG_WPS_UPNP
1754 if (!wps->int_reg && wps->wps->wps_upnp) {
1755 struct upnp_pending_message *p, *prev = NULL;
1756 if (wps->ext_reg > 1)
1757 wps_registrar_free_pending_m2(wps->wps);
1758 p = wps->wps->upnp_msgs;
1759 /* TODO: check pending message MAC address */
1760 while (p && p->next) {
1761 prev = p;
1762 p = p->next;
1763 }
1764 if (p) {
1765 wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
1766 "UPnP");
1767 if (prev)
1768 prev->next = NULL;
1769 else
1770 wps->wps->upnp_msgs = NULL;
1771 msg = p->msg;
1772 switch (p->type) {
1773 case WPS_WSC_ACK:
1774 *op_code = WSC_ACK;
1775 break;
1776 case WPS_WSC_NACK:
1777 *op_code = WSC_NACK;
1778 break;
1779 default:
1780 *op_code = WSC_MSG;
1781 break;
1782 }
1783 os_free(p);
1784 if (wps->ext_reg == 0)
1785 wps->ext_reg = 1;
1786 return msg;
1787 }
1788 }
1789 if (wps->ext_reg) {
1790 wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
1791 "pending message available");
1792 return NULL;
1793 }
1794 #endif /* CONFIG_WPS_UPNP */
1795
1796 switch (wps->state) {
1797 case SEND_M2:
1798 if (wps_get_dev_password(wps) < 0)
1799 msg = wps_build_m2d(wps);
1800 else
1801 msg = wps_build_m2(wps);
1802 *op_code = WSC_MSG;
1803 break;
1804 case SEND_M2D:
1805 msg = wps_build_m2d(wps);
1806 *op_code = WSC_MSG;
1807 break;
1808 case SEND_M4:
1809 msg = wps_build_m4(wps);
1810 *op_code = WSC_MSG;
1811 break;
1812 case SEND_M6:
1813 msg = wps_build_m6(wps);
1814 *op_code = WSC_MSG;
1815 break;
1816 case SEND_M8:
1817 msg = wps_build_m8(wps);
1818 *op_code = WSC_MSG;
1819 break;
1820 case RECV_DONE:
1821 msg = wps_build_wsc_ack(wps);
1822 *op_code = WSC_ACK;
1823 break;
1824 case SEND_WSC_NACK:
1825 msg = wps_build_wsc_nack(wps);
1826 *op_code = WSC_NACK;
1827 break;
1828 default:
1829 wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
1830 "a message", wps->state);
1831 msg = NULL;
1832 break;
1833 }
1834
1835 if (*op_code == WSC_MSG && msg) {
1836 /* Save a copy of the last message for Authenticator derivation
1837 */
1838 wpabuf_free(wps->last_msg);
1839 wps->last_msg = wpabuf_dup(msg);
1840 }
1841
1842 return msg;
1843 }
1844
1845
1846 static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
1847 {
1848 if (e_nonce == NULL) {
1849 wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
1850 return -1;
1851 }
1852
1853 os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
1854 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
1855 wps->nonce_e, WPS_NONCE_LEN);
1856
1857 return 0;
1858 }
1859
1860
1861 static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
1862 {
1863 if (r_nonce == NULL) {
1864 wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
1865 return -1;
1866 }
1867
1868 if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
1869 wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
1870 return -1;
1871 }
1872
1873 return 0;
1874 }
1875
1876
1877 static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
1878 {
1879 if (uuid_e == NULL) {
1880 wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
1881 return -1;
1882 }
1883
1884 os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
1885 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
1886
1887 return 0;
1888 }
1889
1890
1891 static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
1892 {
1893 if (pw_id == NULL) {
1894 wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
1895 return -1;
1896 }
1897
1898 wps->dev_pw_id = WPA_GET_BE16(pw_id);
1899 wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
1900
1901 return 0;
1902 }
1903
1904
1905 static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
1906 {
1907 if (e_hash1 == NULL) {
1908 wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
1909 return -1;
1910 }
1911
1912 os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
1913 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
1914
1915 return 0;
1916 }
1917
1918
1919 static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
1920 {
1921 if (e_hash2 == NULL) {
1922 wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
1923 return -1;
1924 }
1925
1926 os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
1927 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
1928
1929 return 0;
1930 }
1931
1932
1933 static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
1934 {
1935 u8 hash[SHA256_MAC_LEN];
1936 const u8 *addr[4];
1937 size_t len[4];
1938
1939 if (e_snonce1 == NULL) {
1940 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
1941 return -1;
1942 }
1943
1944 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
1945 WPS_SECRET_NONCE_LEN);
1946
1947 /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
1948 addr[0] = e_snonce1;
1949 len[0] = WPS_SECRET_NONCE_LEN;
1950 addr[1] = wps->psk1;
1951 len[1] = WPS_PSK_LEN;
1952 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1953 len[2] = wpabuf_len(wps->dh_pubkey_e);
1954 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1955 len[3] = wpabuf_len(wps->dh_pubkey_r);
1956 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1957
1958 if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
1959 wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
1960 "not match with the pre-committed value");
1961 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
1962 wps_pwd_auth_fail_event(wps->wps, 0, 1);
1963 return -1;
1964 }
1965
1966 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
1967 "half of the device password");
1968
1969 return 0;
1970 }
1971
1972
1973 static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
1974 {
1975 u8 hash[SHA256_MAC_LEN];
1976 const u8 *addr[4];
1977 size_t len[4];
1978
1979 if (e_snonce2 == NULL) {
1980 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
1981 return -1;
1982 }
1983
1984 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
1985 WPS_SECRET_NONCE_LEN);
1986
1987 /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
1988 addr[0] = e_snonce2;
1989 len[0] = WPS_SECRET_NONCE_LEN;
1990 addr[1] = wps->psk2;
1991 len[1] = WPS_PSK_LEN;
1992 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1993 len[2] = wpabuf_len(wps->dh_pubkey_e);
1994 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1995 len[3] = wpabuf_len(wps->dh_pubkey_r);
1996 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1997
1998 if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
1999 wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
2000 "not match with the pre-committed value");
2001 wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2002 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2003 wps_pwd_auth_fail_event(wps->wps, 0, 2);
2004 return -1;
2005 }
2006
2007 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
2008 "half of the device password");
2009 wps->wps_pin_revealed = 0;
2010 wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
2011
2012 return 0;
2013 }
2014
2015
2016 static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
2017 {
2018 if (mac_addr == NULL) {
2019 wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
2020 return -1;
2021 }
2022
2023 wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
2024 MAC2STR(mac_addr));
2025 os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
2026 os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
2027
2028 return 0;
2029 }
2030
2031
2032 static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
2033 size_t pk_len)
2034 {
2035 if (pk == NULL || pk_len == 0) {
2036 wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
2037 return -1;
2038 }
2039
2040 #ifdef CONFIG_WPS_OOB
2041 if (wps->wps->oob_conf.pubkey_hash != NULL) {
2042 const u8 *addr[1];
2043 u8 hash[WPS_HASH_LEN];
2044
2045 addr[0] = pk;
2046 sha256_vector(1, addr, &pk_len, hash);
2047 if (os_memcmp(hash,
2048 wpabuf_head(wps->wps->oob_conf.pubkey_hash),
2049 WPS_OOB_PUBKEY_HASH_LEN) != 0) {
2050 wpa_printf(MSG_ERROR, "WPS: Public Key hash error");
2051 return -1;
2052 }
2053 }
2054 #endif /* CONFIG_WPS_OOB */
2055
2056 wpabuf_free(wps->dh_pubkey_e);
2057 wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
2058 if (wps->dh_pubkey_e == NULL)
2059 return -1;
2060
2061 return 0;
2062 }
2063
2064
2065 static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
2066 {
2067 u16 auth_types;
2068
2069 if (auth == NULL) {
2070 wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
2071 "received");
2072 return -1;
2073 }
2074
2075 auth_types = WPA_GET_BE16(auth);
2076
2077 wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
2078 auth_types);
2079 wps->auth_type = wps->wps->auth_types & auth_types;
2080 if (wps->auth_type == 0) {
2081 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2082 "authentication types (own 0x%x Enrollee 0x%x)",
2083 wps->wps->auth_types, auth_types);
2084 #ifdef WPS_WORKAROUNDS
2085 /*
2086 * Some deployed implementations seem to advertise incorrect
2087 * information in this attribute. For example, Linksys WRT350N
2088 * seems to have a byteorder bug that breaks this negotiation.
2089 * In order to interoperate with existing implementations,
2090 * assume that the Enrollee supports everything we do.
2091 */
2092 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2093 "does not advertise supported authentication types "
2094 "correctly");
2095 wps->auth_type = wps->wps->auth_types;
2096 #else /* WPS_WORKAROUNDS */
2097 return -1;
2098 #endif /* WPS_WORKAROUNDS */
2099 }
2100
2101 return 0;
2102 }
2103
2104
2105 static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
2106 {
2107 u16 encr_types;
2108
2109 if (encr == NULL) {
2110 wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
2111 "received");
2112 return -1;
2113 }
2114
2115 encr_types = WPA_GET_BE16(encr);
2116
2117 wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
2118 encr_types);
2119 wps->encr_type = wps->wps->encr_types & encr_types;
2120 if (wps->encr_type == 0) {
2121 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2122 "encryption types (own 0x%x Enrollee 0x%x)",
2123 wps->wps->encr_types, encr_types);
2124 #ifdef WPS_WORKAROUNDS
2125 /*
2126 * Some deployed implementations seem to advertise incorrect
2127 * information in this attribute. For example, Linksys WRT350N
2128 * seems to have a byteorder bug that breaks this negotiation.
2129 * In order to interoperate with existing implementations,
2130 * assume that the Enrollee supports everything we do.
2131 */
2132 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2133 "does not advertise supported encryption types "
2134 "correctly");
2135 wps->encr_type = wps->wps->encr_types;
2136 #else /* WPS_WORKAROUNDS */
2137 return -1;
2138 #endif /* WPS_WORKAROUNDS */
2139 }
2140
2141 return 0;
2142 }
2143
2144
2145 static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
2146 {
2147 if (conn == NULL) {
2148 wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
2149 "received");
2150 return -1;
2151 }
2152
2153 wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
2154 *conn);
2155
2156 return 0;
2157 }
2158
2159
2160 static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
2161 {
2162 u16 m;
2163
2164 if (methods == NULL) {
2165 wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
2166 return -1;
2167 }
2168
2169 m = WPA_GET_BE16(methods);
2170
2171 wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
2172 "%s%s%s%s%s%s%s%s%s", m,
2173 m & WPS_CONFIG_USBA ? " [USBA]" : "",
2174 m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
2175 m & WPS_CONFIG_LABEL ? " [Label]" : "",
2176 m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
2177 m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
2178 m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
2179 m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
2180 m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
2181 m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
2182
2183 if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
2184 /*
2185 * The Enrollee does not have a display so it is unlikely to be
2186 * able to show the passphrase to a user and as such, could
2187 * benefit from receiving PSK to reduce key derivation time.
2188 */
2189 wpa_printf(MSG_DEBUG, "WPS: Prefer PSK format key due to "
2190 "Enrollee not supporting display");
2191 wps->use_psk_key = 1;
2192 }
2193
2194 return 0;
2195 }
2196
2197
2198 static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
2199 {
2200 if (state == NULL) {
2201 wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
2202 "received");
2203 return -1;
2204 }
2205
2206 wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
2207 *state);
2208
2209 return 0;
2210 }
2211
2212
2213 static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
2214 {
2215 u16 a;
2216
2217 if (assoc == NULL) {
2218 wpa_printf(MSG_DEBUG, "WPS: No Association State received");
2219 return -1;
2220 }
2221
2222 a = WPA_GET_BE16(assoc);
2223 wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
2224
2225 return 0;
2226 }
2227
2228
2229 static int wps_process_config_error(struct wps_data *wps, const u8 *err)
2230 {
2231 u16 e;
2232
2233 if (err == NULL) {
2234 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2235 return -1;
2236 }
2237
2238 e = WPA_GET_BE16(err);
2239 wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2240
2241 return 0;
2242 }
2243
2244
2245 static enum wps_process_res wps_process_m1(struct wps_data *wps,
2246 struct wps_parse_attr *attr)
2247 {
2248 wpa_printf(MSG_DEBUG, "WPS: Received M1");
2249
2250 if (wps->state != RECV_M1) {
2251 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2252 "receiving M1", wps->state);
2253 return WPS_FAILURE;
2254 }
2255
2256 if (wps_process_uuid_e(wps, attr->uuid_e) ||
2257 wps_process_mac_addr(wps, attr->mac_addr) ||
2258 wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2259 wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2260 wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2261 wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2262 wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2263 wps_process_config_methods(wps, attr->config_methods) ||
2264 wps_process_wps_state(wps, attr->wps_state) ||
2265 wps_process_device_attrs(&wps->peer_dev, attr) ||
2266 wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2267 wps_process_assoc_state(wps, attr->assoc_state) ||
2268 wps_process_dev_password_id(wps, attr->dev_password_id) ||
2269 wps_process_config_error(wps, attr->config_error) ||
2270 wps_process_os_version(&wps->peer_dev, attr->os_version))
2271 return WPS_FAILURE;
2272
2273 if (wps->dev_pw_id < 0x10 &&
2274 wps->dev_pw_id != DEV_PW_DEFAULT &&
2275 wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2276 wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2277 wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
2278 (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2279 !wps->wps->registrar->pbc)) {
2280 wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2281 wps->dev_pw_id);
2282 wps->state = SEND_M2D;
2283 return WPS_CONTINUE;
2284 }
2285
2286 #ifdef CONFIG_WPS_OOB
2287 if (wps->dev_pw_id >= 0x10 &&
2288 wps->dev_pw_id != wps->wps->oob_dev_pw_id) {
2289 wpa_printf(MSG_DEBUG, "WPS: OOB Device Password ID "
2290 "%d mismatch", wps->dev_pw_id);
2291 wps->state = SEND_M2D;
2292 return WPS_CONTINUE;
2293 }
2294 #endif /* CONFIG_WPS_OOB */
2295
2296 if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2297 if (wps->wps->registrar->force_pbc_overlap ||
2298 wps_registrar_pbc_overlap(wps->wps->registrar,
2299 wps->mac_addr_e, wps->uuid_e)) {
2300 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2301 "negotiation");
2302 wps->state = SEND_M2D;
2303 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2304 wps_pbc_overlap_event(wps->wps);
2305 wps->wps->registrar->force_pbc_overlap = 1;
2306 return WPS_CONTINUE;
2307 }
2308 wps_registrar_add_pbc_session(wps->wps->registrar,
2309 wps->mac_addr_e, wps->uuid_e);
2310 wps->pbc = 1;
2311 }
2312
2313 #ifdef WPS_WORKAROUNDS
2314 /*
2315 * It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
2316 * passphrase format. To avoid interop issues, force PSK format to be
2317 * used.
2318 */
2319 if (!wps->use_psk_key &&
2320 wps->peer_dev.manufacturer &&
2321 os_strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
2322 wps->peer_dev.model_name &&
2323 os_strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
2324 wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
2325 "PSK format");
2326 wps->use_psk_key = 1;
2327 }
2328 #endif /* WPS_WORKAROUNDS */
2329
2330 wps->state = SEND_M2;
2331 return WPS_CONTINUE;
2332 }
2333
2334
2335 static enum wps_process_res wps_process_m3(struct wps_data *wps,
2336 const struct wpabuf *msg,
2337 struct wps_parse_attr *attr)
2338 {
2339 wpa_printf(MSG_DEBUG, "WPS: Received M3");
2340
2341 if (wps->state != RECV_M3) {
2342 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2343 "receiving M3", wps->state);
2344 wps->state = SEND_WSC_NACK;
2345 return WPS_CONTINUE;
2346 }
2347
2348 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2349 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2350 "session overlap");
2351 wps->state = SEND_WSC_NACK;
2352 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2353 return WPS_CONTINUE;
2354 }
2355
2356 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2357 wps_process_authenticator(wps, attr->authenticator, msg) ||
2358 wps_process_e_hash1(wps, attr->e_hash1) ||
2359 wps_process_e_hash2(wps, attr->e_hash2)) {
2360 wps->state = SEND_WSC_NACK;
2361 return WPS_CONTINUE;
2362 }
2363
2364 wps->state = SEND_M4;
2365 return WPS_CONTINUE;
2366 }
2367
2368
2369 static enum wps_process_res wps_process_m5(struct wps_data *wps,
2370 const struct wpabuf *msg,
2371 struct wps_parse_attr *attr)
2372 {
2373 struct wpabuf *decrypted;
2374 struct wps_parse_attr eattr;
2375
2376 wpa_printf(MSG_DEBUG, "WPS: Received M5");
2377
2378 if (wps->state != RECV_M5) {
2379 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2380 "receiving M5", wps->state);
2381 wps->state = SEND_WSC_NACK;
2382 return WPS_CONTINUE;
2383 }
2384
2385 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2386 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2387 "session overlap");
2388 wps->state = SEND_WSC_NACK;
2389 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2390 return WPS_CONTINUE;
2391 }
2392
2393 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2394 wps_process_authenticator(wps, attr->authenticator, msg)) {
2395 wps->state = SEND_WSC_NACK;
2396 return WPS_CONTINUE;
2397 }
2398
2399 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2400 attr->encr_settings_len);
2401 if (decrypted == NULL) {
2402 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2403 "Settings attribute");
2404 wps->state = SEND_WSC_NACK;
2405 return WPS_CONTINUE;
2406 }
2407
2408 if (wps_validate_m5_encr(decrypted) < 0) {
2409 wpabuf_free(decrypted);
2410 wps->state = SEND_WSC_NACK;
2411 return WPS_CONTINUE;
2412 }
2413
2414 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2415 "attribute");
2416 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2417 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2418 wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2419 wpabuf_free(decrypted);
2420 wps->state = SEND_WSC_NACK;
2421 return WPS_CONTINUE;
2422 }
2423 wpabuf_free(decrypted);
2424
2425 wps->state = SEND_M6;
2426 return WPS_CONTINUE;
2427 }
2428
2429
2430 static void wps_sta_cred_cb(struct wps_data *wps)
2431 {
2432 /*
2433 * Update credential to only include a single authentication and
2434 * encryption type in case the AP configuration includes more than one
2435 * option.
2436 */
2437 if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2438 wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2439 else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2440 wps->cred.auth_type = WPS_AUTH_WPAPSK;
2441 if (wps->cred.encr_type & WPS_ENCR_AES)
2442 wps->cred.encr_type = WPS_ENCR_AES;
2443 else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2444 wps->cred.encr_type = WPS_ENCR_TKIP;
2445 wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2446 "AP configuration");
2447 if (wps->wps->cred_cb)
2448 wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2449 }
2450
2451
2452 static void wps_cred_update(struct wps_credential *dst,
2453 struct wps_credential *src)
2454 {
2455 os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2456 dst->ssid_len = src->ssid_len;
2457 dst->auth_type = src->auth_type;
2458 dst->encr_type = src->encr_type;
2459 dst->key_idx = src->key_idx;
2460 os_memcpy(dst->key, src->key, sizeof(dst->key));
2461 dst->key_len = src->key_len;
2462 }
2463
2464
2465 static int wps_process_ap_settings_r(struct wps_data *wps,
2466 struct wps_parse_attr *attr)
2467 {
2468 if (wps->wps->ap || wps->er)
2469 return 0;
2470
2471 /* AP Settings Attributes in M7 when Enrollee is an AP */
2472 if (wps_process_ap_settings(attr, &wps->cred) < 0)
2473 return -1;
2474
2475 wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2476
2477 if (wps->new_ap_settings) {
2478 wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2479 "new settings");
2480 wps_cred_update(&wps->cred, wps->new_ap_settings);
2481 return 0;
2482 } else {
2483 /*
2484 * Use the AP PIN only to receive the current AP settings, not
2485 * to reconfigure the AP.
2486 */
2487 if (wps->ap_settings_cb) {
2488 wps->ap_settings_cb(wps->ap_settings_cb_ctx,
2489 &wps->cred);
2490 return 1;
2491 }
2492 wps_sta_cred_cb(wps);
2493 return 1;
2494 }
2495 }
2496
2497
2498 static enum wps_process_res wps_process_m7(struct wps_data *wps,
2499 const struct wpabuf *msg,
2500 struct wps_parse_attr *attr)
2501 {
2502 struct wpabuf *decrypted;
2503 struct wps_parse_attr eattr;
2504
2505 wpa_printf(MSG_DEBUG, "WPS: Received M7");
2506
2507 if (wps->state != RECV_M7) {
2508 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2509 "receiving M7", wps->state);
2510 wps->state = SEND_WSC_NACK;
2511 return WPS_CONTINUE;
2512 }
2513
2514 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2515 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2516 "session overlap");
2517 wps->state = SEND_WSC_NACK;
2518 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2519 return WPS_CONTINUE;
2520 }
2521
2522 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2523 wps_process_authenticator(wps, attr->authenticator, msg)) {
2524 wps->state = SEND_WSC_NACK;
2525 return WPS_CONTINUE;
2526 }
2527
2528 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2529 attr->encr_settings_len);
2530 if (decrypted == NULL) {
2531 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt Encrypted "
2532 "Settings attribute");
2533 wps->state = SEND_WSC_NACK;
2534 return WPS_CONTINUE;
2535 }
2536
2537 if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er) < 0) {
2538 wpabuf_free(decrypted);
2539 wps->state = SEND_WSC_NACK;
2540 return WPS_CONTINUE;
2541 }
2542
2543 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2544 "attribute");
2545 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2546 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2547 wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2548 wps_process_ap_settings_r(wps, &eattr)) {
2549 wpabuf_free(decrypted);
2550 wps->state = SEND_WSC_NACK;
2551 return WPS_CONTINUE;
2552 }
2553
2554 wpabuf_free(decrypted);
2555
2556 wps->state = SEND_M8;
2557 return WPS_CONTINUE;
2558 }
2559
2560
2561 static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2562 const struct wpabuf *msg)
2563 {
2564 struct wps_parse_attr attr;
2565 enum wps_process_res ret = WPS_CONTINUE;
2566
2567 wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2568
2569 if (wps_parse_msg(msg, &attr) < 0)
2570 return WPS_FAILURE;
2571
2572 if (attr.msg_type == NULL) {
2573 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2574 return WPS_FAILURE;
2575 }
2576
2577 if (*attr.msg_type != WPS_M1 &&
2578 (attr.registrar_nonce == NULL ||
2579 os_memcmp(wps->nonce_r, attr.registrar_nonce,
2580 WPS_NONCE_LEN != 0))) {
2581 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2582 return WPS_FAILURE;
2583 }
2584
2585 switch (*attr.msg_type) {
2586 case WPS_M1:
2587 if (wps_validate_m1(msg) < 0)
2588 return WPS_FAILURE;
2589 #ifdef CONFIG_WPS_UPNP
2590 if (wps->wps->wps_upnp && attr.mac_addr) {
2591 /* Remove old pending messages when starting new run */
2592 wps_free_pending_msgs(wps->wps->upnp_msgs);
2593 wps->wps->upnp_msgs = NULL;
2594
2595 upnp_wps_device_send_wlan_event(
2596 wps->wps->wps_upnp, attr.mac_addr,
2597 UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
2598 }
2599 #endif /* CONFIG_WPS_UPNP */
2600 ret = wps_process_m1(wps, &attr);
2601 break;
2602 case WPS_M3:
2603 if (wps_validate_m3(msg) < 0)
2604 return WPS_FAILURE;
2605 ret = wps_process_m3(wps, msg, &attr);
2606 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2607 wps_fail_event(wps->wps, WPS_M3);
2608 break;
2609 case WPS_M5:
2610 if (wps_validate_m5(msg) < 0)
2611 return WPS_FAILURE;
2612 ret = wps_process_m5(wps, msg, &attr);
2613 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2614 wps_fail_event(wps->wps, WPS_M5);
2615 break;
2616 case WPS_M7:
2617 if (wps_validate_m7(msg) < 0)
2618 return WPS_FAILURE;
2619 ret = wps_process_m7(wps, msg, &attr);
2620 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2621 wps_fail_event(wps->wps, WPS_M7);
2622 break;
2623 default:
2624 wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
2625 *attr.msg_type);
2626 return WPS_FAILURE;
2627 }
2628
2629 if (ret == WPS_CONTINUE) {
2630 /* Save a copy of the last message for Authenticator derivation
2631 */
2632 wpabuf_free(wps->last_msg);
2633 wps->last_msg = wpabuf_dup(msg);
2634 }
2635
2636 return ret;
2637 }
2638
2639
2640 static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
2641 const struct wpabuf *msg)
2642 {
2643 struct wps_parse_attr attr;
2644
2645 wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
2646
2647 if (wps_parse_msg(msg, &attr) < 0)
2648 return WPS_FAILURE;
2649
2650 if (attr.msg_type == NULL) {
2651 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2652 return WPS_FAILURE;
2653 }
2654
2655 if (*attr.msg_type != WPS_WSC_ACK) {
2656 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2657 *attr.msg_type);
2658 return WPS_FAILURE;
2659 }
2660
2661 #ifdef CONFIG_WPS_UPNP
2662 if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
2663 upnp_wps_subscribers(wps->wps->wps_upnp)) {
2664 if (wps->wps->upnp_msgs)
2665 return WPS_CONTINUE;
2666 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2667 "external Registrar");
2668 return WPS_PENDING;
2669 }
2670 #endif /* CONFIG_WPS_UPNP */
2671
2672 if (attr.registrar_nonce == NULL ||
2673 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2674 {
2675 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2676 return WPS_FAILURE;
2677 }
2678
2679 if (attr.enrollee_nonce == NULL ||
2680 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2681 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2682 return WPS_FAILURE;
2683 }
2684
2685 if (wps->state == RECV_M2D_ACK) {
2686 #ifdef CONFIG_WPS_UPNP
2687 if (wps->wps->wps_upnp &&
2688 upnp_wps_subscribers(wps->wps->wps_upnp)) {
2689 if (wps->wps->upnp_msgs)
2690 return WPS_CONTINUE;
2691 if (wps->ext_reg == 0)
2692 wps->ext_reg = 1;
2693 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2694 "external Registrar");
2695 return WPS_PENDING;
2696 }
2697 #endif /* CONFIG_WPS_UPNP */
2698
2699 wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
2700 "terminate negotiation");
2701 }
2702
2703 return WPS_FAILURE;
2704 }
2705
2706
2707 static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
2708 const struct wpabuf *msg)
2709 {
2710 struct wps_parse_attr attr;
2711 int old_state;
2712
2713 wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
2714
2715 old_state = wps->state;
2716 wps->state = SEND_WSC_NACK;
2717
2718 if (wps_parse_msg(msg, &attr) < 0)
2719 return WPS_FAILURE;
2720
2721 if (attr.msg_type == NULL) {
2722 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2723 return WPS_FAILURE;
2724 }
2725
2726 if (*attr.msg_type != WPS_WSC_NACK) {
2727 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2728 *attr.msg_type);
2729 return WPS_FAILURE;
2730 }
2731
2732 #ifdef CONFIG_WPS_UPNP
2733 if (wps->wps->wps_upnp && wps->ext_reg) {
2734 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
2735 "Registrar terminated by the Enrollee");
2736 return WPS_FAILURE;
2737 }
2738 #endif /* CONFIG_WPS_UPNP */
2739
2740 if (attr.registrar_nonce == NULL ||
2741 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2742 {
2743 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2744 return WPS_FAILURE;
2745 }
2746
2747 if (attr.enrollee_nonce == NULL ||
2748 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2749 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2750 return WPS_FAILURE;
2751 }
2752
2753 if (attr.config_error == NULL) {
2754 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
2755 "in WSC_NACK");
2756 return WPS_FAILURE;
2757 }
2758
2759 wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
2760 "Configuration Error %d", WPA_GET_BE16(attr.config_error));
2761
2762 switch (old_state) {
2763 case RECV_M3:
2764 wps_fail_event(wps->wps, WPS_M2);
2765 break;
2766 case RECV_M5:
2767 wps_fail_event(wps->wps, WPS_M4);
2768 break;
2769 case RECV_M7:
2770 wps_fail_event(wps->wps, WPS_M6);
2771 break;
2772 case RECV_DONE:
2773 wps_fail_event(wps->wps, WPS_M8);
2774 break;
2775 default:
2776 break;
2777 }
2778
2779 return WPS_FAILURE;
2780 }
2781
2782
2783 static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
2784 const struct wpabuf *msg)
2785 {
2786 struct wps_parse_attr attr;
2787
2788 wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
2789
2790 if (wps->state != RECV_DONE &&
2791 (!wps->wps->wps_upnp || !wps->ext_reg)) {
2792 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2793 "receiving WSC_Done", wps->state);
2794 return WPS_FAILURE;
2795 }
2796
2797 if (wps_parse_msg(msg, &attr) < 0)
2798 return WPS_FAILURE;
2799
2800 if (attr.msg_type == NULL) {
2801 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2802 return WPS_FAILURE;
2803 }
2804
2805 if (*attr.msg_type != WPS_WSC_DONE) {
2806 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2807 *attr.msg_type);
2808 return WPS_FAILURE;
2809 }
2810
2811 #ifdef CONFIG_WPS_UPNP
2812 if (wps->wps->wps_upnp && wps->ext_reg) {
2813 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
2814 "Registrar completed successfully");
2815 wps_device_store(wps->wps->registrar, &wps->peer_dev,
2816 wps->uuid_e);
2817 return WPS_DONE;
2818 }
2819 #endif /* CONFIG_WPS_UPNP */
2820
2821 if (attr.registrar_nonce == NULL ||
2822 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2823 {
2824 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2825 return WPS_FAILURE;
2826 }
2827
2828 if (attr.enrollee_nonce == NULL ||
2829 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2830 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2831 return WPS_FAILURE;
2832 }
2833
2834 wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
2835 wps_device_store(wps->wps->registrar, &wps->peer_dev,
2836 wps->uuid_e);
2837
2838 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
2839 wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
2840 struct wps_credential cred;
2841
2842 wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
2843 "on first Enrollee connection");
2844
2845 os_memset(&cred, 0, sizeof(cred));
2846 os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
2847 cred.ssid_len = wps->wps->ssid_len;
2848 cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
2849 cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
2850 os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
2851 cred.key_len = wps->new_psk_len;
2852
2853 wps->wps->wps_state = WPS_STATE_CONFIGURED;
2854 wpa_hexdump_ascii_key(MSG_DEBUG,
2855 "WPS: Generated random passphrase",
2856 wps->new_psk, wps->new_psk_len);
2857 if (wps->wps->cred_cb)
2858 wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
2859
2860 os_free(wps->new_psk);
2861 wps->new_psk = NULL;
2862 }
2863
2864 if (!wps->wps->ap && !wps->er)
2865 wps_sta_cred_cb(wps);
2866
2867 if (wps->new_psk) {
2868 if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
2869 wps->new_psk, wps->new_psk_len)) {
2870 wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
2871 "new PSK");
2872 }
2873 os_free(wps->new_psk);
2874 wps->new_psk = NULL;
2875 }
2876
2877 wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e);
2878
2879 if (wps->pbc) {
2880 wps_registrar_remove_pbc_session(wps->wps->registrar,
2881 wps->mac_addr_e, wps->uuid_e);
2882 wps_registrar_pbc_completed(wps->wps->registrar);
2883 } else {
2884 wps_registrar_pin_completed(wps->wps->registrar);
2885 }
2886 /* TODO: maintain AuthorizedMACs somewhere separately for each ER and
2887 * merge them into APs own list.. */
2888
2889 wps_success_event(wps->wps);
2890
2891 return WPS_DONE;
2892 }
2893
2894
2895 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
2896 enum wsc_op_code op_code,
2897 const struct wpabuf *msg)
2898 {
2899 enum wps_process_res ret;
2900
2901 wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
2902 "op_code=%d)",
2903 (unsigned long) wpabuf_len(msg), op_code);
2904
2905 #ifdef CONFIG_WPS_UPNP
2906 if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
2907 struct wps_parse_attr attr;
2908 if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
2909 *attr.msg_type == WPS_M3)
2910 wps->ext_reg = 2; /* past M2/M2D phase */
2911 }
2912 if (wps->ext_reg > 1)
2913 wps_registrar_free_pending_m2(wps->wps);
2914 if (wps->wps->wps_upnp && wps->ext_reg &&
2915 wps->wps->upnp_msgs == NULL &&
2916 (op_code == WSC_MSG || op_code == WSC_Done || op_code == WSC_NACK))
2917 {
2918 struct wps_parse_attr attr;
2919 int type;
2920 if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
2921 type = -1;
2922 else
2923 type = *attr.msg_type;
2924 wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
2925 " to external Registrar for processing", type);
2926 upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
2927 wps->mac_addr_e,
2928 UPNP_WPS_WLANEVENT_TYPE_EAP,
2929 msg);
2930 if (op_code == WSC_MSG)
2931 return WPS_PENDING;
2932 } else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
2933 wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
2934 "external Registrar");
2935 return WPS_CONTINUE;
2936 }
2937 #endif /* CONFIG_WPS_UPNP */
2938
2939 switch (op_code) {
2940 case WSC_MSG:
2941 return wps_process_wsc_msg(wps, msg);
2942 case WSC_ACK:
2943 if (wps_validate_wsc_ack(msg) < 0)
2944 return WPS_FAILURE;
2945 return wps_process_wsc_ack(wps, msg);
2946 case WSC_NACK:
2947 if (wps_validate_wsc_nack(msg) < 0)
2948 return WPS_FAILURE;
2949 return wps_process_wsc_nack(wps, msg);
2950 case WSC_Done:
2951 if (wps_validate_wsc_done(msg) < 0)
2952 return WPS_FAILURE;
2953 ret = wps_process_wsc_done(wps, msg);
2954 if (ret == WPS_FAILURE) {
2955 wps->state = SEND_WSC_NACK;
2956 wps_fail_event(wps->wps, WPS_WSC_DONE);
2957 }
2958 return ret;
2959 default:
2960 wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
2961 return WPS_FAILURE;
2962 }
2963 }
2964
2965
2966 int wps_registrar_update_ie(struct wps_registrar *reg)
2967 {
2968 return wps_set_ie(reg);
2969 }
2970
2971
2972 static void wps_registrar_set_selected_timeout(void *eloop_ctx,
2973 void *timeout_ctx)
2974 {
2975 struct wps_registrar *reg = eloop_ctx;
2976
2977 wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
2978 "unselect internal Registrar");
2979 reg->selected_registrar = 0;
2980 reg->pbc = 0;
2981 wps_registrar_selected_registrar_changed(reg);
2982 }
2983
2984
2985 #ifdef CONFIG_WPS_UPNP
2986 static void wps_registrar_sel_reg_add(struct wps_registrar *reg,
2987 struct subscription *s)
2988 {
2989 int i, j;
2990 wpa_printf(MSG_DEBUG, "WPS: External Registrar selected (dev_pw_id=%d "
2991 "config_methods=0x%x)",
2992 s->dev_password_id, s->config_methods);
2993 reg->sel_reg_union = 1;
2994 if (reg->sel_reg_dev_password_id_override != DEV_PW_PUSHBUTTON)
2995 reg->sel_reg_dev_password_id_override = s->dev_password_id;
2996 if (reg->sel_reg_config_methods_override == -1)
2997 reg->sel_reg_config_methods_override = 0;
2998 reg->sel_reg_config_methods_override |= s->config_methods;
2999 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
3000 if (is_zero_ether_addr(reg->authorized_macs_union[i]))
3001 break;
3002 for (j = 0; i < WPS_MAX_AUTHORIZED_MACS && j < WPS_MAX_AUTHORIZED_MACS;
3003 j++) {
3004 if (is_zero_ether_addr(s->authorized_macs[j]))
3005 break;
3006 wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC into union: "
3007 MACSTR, MAC2STR(s->authorized_macs[j]));
3008 os_memcpy(reg->authorized_macs_union[i],
3009 s->authorized_macs[j], ETH_ALEN);
3010 i++;
3011 }
3012 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union",
3013 (u8 *) reg->authorized_macs_union,
3014 sizeof(reg->authorized_macs_union));
3015 }
3016 #endif /* CONFIG_WPS_UPNP */
3017
3018
3019 static void wps_registrar_sel_reg_union(struct wps_registrar *reg)
3020 {
3021 #ifdef CONFIG_WPS_UPNP
3022 struct subscription *s;
3023
3024 if (reg->wps->wps_upnp == NULL)
3025 return;
3026
3027 dl_list_for_each(s, &reg->wps->wps_upnp->subscriptions,
3028 struct subscription, list) {
3029 struct subscr_addr *sa;
3030 sa = dl_list_first(&s->addr_list, struct subscr_addr, list);
3031 if (sa) {
3032 wpa_printf(MSG_DEBUG, "WPS: External Registrar %s:%d",
3033 inet_ntoa(sa->saddr.sin_addr),
3034 ntohs(sa->saddr.sin_port));
3035 }
3036 if (s->selected_registrar)
3037 wps_registrar_sel_reg_add(reg, s);
3038 else
3039 wpa_printf(MSG_DEBUG, "WPS: External Registrar not "
3040 "selected");
3041 }
3042 #endif /* CONFIG_WPS_UPNP */
3043 }
3044
3045
3046 /**
3047 * wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
3048 * @reg: Registrar data from wps_registrar_init()
3049 *
3050 * This function is called when selected registrar state changes, e.g., when an
3051 * AP receives a SetSelectedRegistrar UPnP message.
3052 */
3053 void wps_registrar_selected_registrar_changed(struct wps_registrar *reg)
3054 {
3055 wpa_printf(MSG_DEBUG, "WPS: Selected registrar information changed");
3056
3057 reg->sel_reg_union = reg->selected_registrar;
3058 reg->sel_reg_dev_password_id_override = -1;
3059 reg->sel_reg_config_methods_override = -1;
3060 os_memcpy(reg->authorized_macs_union, reg->authorized_macs,
3061 WPS_MAX_AUTHORIZED_MACS * ETH_ALEN);
3062 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union (start with own)",
3063 (u8 *) reg->authorized_macs_union,
3064 sizeof(reg->authorized_macs_union));
3065 if (reg->selected_registrar) {
3066 u16 methods;
3067
3068 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
3069 #ifdef CONFIG_WPS2
3070 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
3071 WPS_CONFIG_PHY_PUSHBUTTON);
3072 #endif /* CONFIG_WPS2 */
3073 if (reg->pbc) {
3074 reg->sel_reg_dev_password_id_override =
3075 DEV_PW_PUSHBUTTON;
3076 wps_set_pushbutton(&methods, reg->wps->config_methods);
3077 }
3078 wpa_printf(MSG_DEBUG, "WPS: Internal Registrar selected "
3079 "(pbc=%d)", reg->pbc);
3080 reg->sel_reg_config_methods_override = methods;
3081 } else
3082 wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
3083
3084 wps_registrar_sel_reg_union(reg);
3085
3086 wps_set_ie(reg);
3087 wps_cb_set_sel_reg(reg);
3088 }
3089
3090
3091 int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
3092 char *buf, size_t buflen)
3093 {
3094 struct wps_registrar_device *d;
3095 int len = 0, ret;
3096 char uuid[40];
3097 char devtype[WPS_DEV_TYPE_BUFSIZE];
3098
3099 d = wps_device_get(reg, addr);
3100 if (d == NULL)
3101 return 0;
3102 if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
3103 return 0;
3104
3105 ret = os_snprintf(buf + len, buflen - len,
3106 "wpsUuid=%s\n"
3107 "wpsPrimaryDeviceType=%s\n"
3108 "wpsDeviceName=%s\n"
3109 "wpsManufacturer=%s\n"
3110 "wpsModelName=%s\n"
3111 "wpsModelNumber=%s\n"
3112 "wpsSerialNumber=%s\n",
3113 uuid,
3114 wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
3115 sizeof(devtype)),
3116 d->dev.device_name ? d->dev.device_name : "",
3117 d->dev.manufacturer ? d->dev.manufacturer : "",
3118 d->dev.model_name ? d->dev.model_name : "",
3119 d->dev.model_number ? d->dev.model_number : "",
3120 d->dev.serial_number ? d->dev.serial_number : "");
3121 if (ret < 0 || (size_t) ret >= buflen - len)
3122 return len;
3123 len += ret;
3124
3125 return len;
3126 }
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