Line data Source code
1 : /*
2 : * Wi-Fi Protected Setup - Registrar
3 : * Copyright (c) 2008-2013, 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 :
11 : #include "utils/common.h"
12 : #include "utils/base64.h"
13 : #include "utils/eloop.h"
14 : #include "utils/uuid.h"
15 : #include "utils/list.h"
16 : #include "crypto/crypto.h"
17 : #include "crypto/sha256.h"
18 : #include "crypto/random.h"
19 : #include "common/ieee802_11_defs.h"
20 : #include "wps_i.h"
21 : #include "wps_dev_attr.h"
22 : #include "wps_upnp.h"
23 : #include "wps_upnp_i.h"
24 :
25 : #ifndef CONFIG_WPS_STRICT
26 : #define WPS_WORKAROUNDS
27 : #endif /* CONFIG_WPS_STRICT */
28 :
29 : #ifdef CONFIG_WPS_NFC
30 :
31 : struct wps_nfc_pw_token {
32 : struct dl_list list;
33 : u8 pubkey_hash[WPS_OOB_PUBKEY_HASH_LEN];
34 : unsigned int peer_pk_hash_known:1;
35 : u16 pw_id;
36 : u8 dev_pw[WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1];
37 : size_t dev_pw_len;
38 : int pk_hash_provided_oob; /* whether own PK hash was provided OOB */
39 : };
40 :
41 :
42 2 : static void wps_remove_nfc_pw_token(struct wps_nfc_pw_token *token)
43 : {
44 2 : dl_list_del(&token->list);
45 2 : bin_clear_free(token, sizeof(*token));
46 2 : }
47 :
48 :
49 6072 : static void wps_free_nfc_pw_tokens(struct dl_list *tokens, u16 pw_id)
50 : {
51 : struct wps_nfc_pw_token *token, *prev;
52 6074 : dl_list_for_each_safe(token, prev, tokens, struct wps_nfc_pw_token,
53 : list) {
54 2 : if (pw_id == 0 || pw_id == token->pw_id)
55 2 : wps_remove_nfc_pw_token(token);
56 : }
57 6072 : }
58 :
59 :
60 35 : static struct wps_nfc_pw_token * wps_get_nfc_pw_token(struct dl_list *tokens,
61 : u16 pw_id)
62 : {
63 : struct wps_nfc_pw_token *token;
64 35 : dl_list_for_each(token, tokens, struct wps_nfc_pw_token, list) {
65 29 : if (pw_id == token->pw_id)
66 29 : return token;
67 : }
68 6 : return NULL;
69 : }
70 :
71 : #else /* CONFIG_WPS_NFC */
72 :
73 : #define wps_free_nfc_pw_tokens(t, p) do { } while (0)
74 :
75 : #endif /* CONFIG_WPS_NFC */
76 :
77 :
78 : struct wps_uuid_pin {
79 : struct dl_list list;
80 : u8 uuid[WPS_UUID_LEN];
81 : int wildcard_uuid;
82 : u8 *pin;
83 : size_t pin_len;
84 : #define PIN_LOCKED BIT(0)
85 : #define PIN_EXPIRES BIT(1)
86 : int flags;
87 : struct os_reltime expiration;
88 : u8 enrollee_addr[ETH_ALEN];
89 : };
90 :
91 :
92 334 : static void wps_free_pin(struct wps_uuid_pin *pin)
93 : {
94 334 : bin_clear_free(pin->pin, pin->pin_len);
95 334 : os_free(pin);
96 334 : }
97 :
98 :
99 334 : static void wps_remove_pin(struct wps_uuid_pin *pin)
100 : {
101 334 : dl_list_del(&pin->list);
102 334 : wps_free_pin(pin);
103 334 : }
104 :
105 :
106 6043 : static void wps_free_pins(struct dl_list *pins)
107 : {
108 : struct wps_uuid_pin *pin, *prev;
109 6142 : dl_list_for_each_safe(pin, prev, pins, struct wps_uuid_pin, list)
110 99 : wps_remove_pin(pin);
111 6043 : }
112 :
113 :
114 : struct wps_pbc_session {
115 : struct wps_pbc_session *next;
116 : u8 addr[ETH_ALEN];
117 : u8 uuid_e[WPS_UUID_LEN];
118 : struct os_reltime timestamp;
119 : };
120 :
121 :
122 6043 : static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
123 : {
124 : struct wps_pbc_session *prev;
125 :
126 12146 : while (pbc) {
127 60 : prev = pbc;
128 60 : pbc = pbc->next;
129 60 : os_free(prev);
130 : }
131 6043 : }
132 :
133 :
134 : struct wps_registrar_device {
135 : struct wps_registrar_device *next;
136 : struct wps_device_data dev;
137 : u8 uuid[WPS_UUID_LEN];
138 : };
139 :
140 :
141 : struct wps_registrar {
142 : struct wps_context *wps;
143 :
144 : int pbc;
145 : int selected_registrar;
146 :
147 : int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *p2p_dev_addr,
148 : const u8 *psk, size_t psk_len);
149 : int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
150 : struct wpabuf *probe_resp_ie);
151 : void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
152 : const struct wps_device_data *dev);
153 : void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
154 : const u8 *uuid_e, const u8 *dev_pw,
155 : size_t dev_pw_len);
156 : void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
157 : u16 sel_reg_config_methods);
158 : void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
159 : const u8 *pri_dev_type, u16 config_methods,
160 : u16 dev_password_id, u8 request_type,
161 : const char *dev_name);
162 : void *cb_ctx;
163 :
164 : struct dl_list pins;
165 : struct dl_list nfc_pw_tokens;
166 : struct wps_pbc_session *pbc_sessions;
167 :
168 : int skip_cred_build;
169 : struct wpabuf *extra_cred;
170 : int disable_auto_conf;
171 : int sel_reg_union;
172 : int sel_reg_dev_password_id_override;
173 : int sel_reg_config_methods_override;
174 : int static_wep_only;
175 : int dualband;
176 : int force_per_enrollee_psk;
177 :
178 : struct wps_registrar_device *devices;
179 :
180 : int force_pbc_overlap;
181 :
182 : u8 authorized_macs[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
183 : u8 authorized_macs_union[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
184 :
185 : u8 p2p_dev_addr[ETH_ALEN];
186 :
187 : u8 pbc_ignore_uuid[WPS_UUID_LEN];
188 : #ifdef WPS_WORKAROUNDS
189 : struct os_reltime pbc_ignore_start;
190 : #endif /* WPS_WORKAROUNDS */
191 : };
192 :
193 :
194 : static int wps_set_ie(struct wps_registrar *reg);
195 : static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx);
196 : static void wps_registrar_set_selected_timeout(void *eloop_ctx,
197 : void *timeout_ctx);
198 : static void wps_registrar_remove_pin(struct wps_registrar *reg,
199 : struct wps_uuid_pin *pin);
200 :
201 :
202 480 : static void wps_registrar_add_authorized_mac(struct wps_registrar *reg,
203 : const u8 *addr)
204 : {
205 : int i;
206 2880 : wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC " MACSTR,
207 2880 : MAC2STR(addr));
208 2740 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
209 2288 : if (os_memcmp(reg->authorized_macs[i], addr, ETH_ALEN) == 0) {
210 28 : wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was "
211 : "already in the list");
212 508 : return; /* already in list */
213 : }
214 2260 : for (i = WPS_MAX_AUTHORIZED_MACS - 1; i > 0; i--)
215 1808 : os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i - 1],
216 : ETH_ALEN);
217 452 : os_memcpy(reg->authorized_macs[0], addr, ETH_ALEN);
218 452 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
219 452 : (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
220 : }
221 :
222 :
223 323 : static void wps_registrar_remove_authorized_mac(struct wps_registrar *reg,
224 : const u8 *addr)
225 : {
226 : int i;
227 1938 : wpa_printf(MSG_DEBUG, "WPS: Remove authorized MAC " MACSTR,
228 1938 : MAC2STR(addr));
229 333 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++) {
230 331 : if (os_memcmp(reg->authorized_macs, addr, ETH_ALEN) == 0)
231 321 : break;
232 : }
233 323 : if (i == WPS_MAX_AUTHORIZED_MACS) {
234 2 : wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was not in the "
235 : "list");
236 325 : return; /* not in the list */
237 : }
238 1605 : for (; i + 1 < WPS_MAX_AUTHORIZED_MACS; i++)
239 1284 : os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i + 1],
240 : ETH_ALEN);
241 321 : os_memset(reg->authorized_macs[WPS_MAX_AUTHORIZED_MACS - 1], 0,
242 : ETH_ALEN);
243 321 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
244 321 : (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
245 : }
246 :
247 :
248 6043 : static void wps_free_devices(struct wps_registrar_device *dev)
249 : {
250 : struct wps_registrar_device *prev;
251 :
252 12387 : while (dev) {
253 301 : prev = dev;
254 301 : dev = dev->next;
255 301 : wps_device_data_free(&prev->dev);
256 301 : os_free(prev);
257 : }
258 6043 : }
259 :
260 :
261 318 : static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
262 : const u8 *addr)
263 : {
264 : struct wps_registrar_device *dev;
265 :
266 384 : for (dev = reg->devices; dev; dev = dev->next) {
267 80 : if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
268 14 : return dev;
269 : }
270 304 : return NULL;
271 : }
272 :
273 :
274 311 : static void wps_device_clone_data(struct wps_device_data *dst,
275 : struct wps_device_data *src)
276 : {
277 311 : os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
278 311 : os_memcpy(dst->pri_dev_type, src->pri_dev_type, WPS_DEV_TYPE_LEN);
279 :
280 : #define WPS_STRDUP(n) \
281 : os_free(dst->n); \
282 : dst->n = src->n ? os_strdup(src->n) : NULL
283 :
284 311 : WPS_STRDUP(device_name);
285 311 : WPS_STRDUP(manufacturer);
286 311 : WPS_STRDUP(model_name);
287 311 : WPS_STRDUP(model_number);
288 311 : WPS_STRDUP(serial_number);
289 : #undef WPS_STRDUP
290 311 : }
291 :
292 :
293 311 : int wps_device_store(struct wps_registrar *reg,
294 : struct wps_device_data *dev, const u8 *uuid)
295 : {
296 : struct wps_registrar_device *d;
297 :
298 311 : d = wps_device_get(reg, dev->mac_addr);
299 311 : if (d == NULL) {
300 301 : d = os_zalloc(sizeof(*d));
301 301 : if (d == NULL)
302 0 : return -1;
303 301 : d->next = reg->devices;
304 301 : reg->devices = d;
305 : }
306 :
307 311 : wps_device_clone_data(&d->dev, dev);
308 311 : os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
309 :
310 311 : return 0;
311 : }
312 :
313 :
314 220 : static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
315 : const u8 *addr, const u8 *uuid_e)
316 : {
317 220 : struct wps_pbc_session *pbc, *prev = NULL;
318 : struct os_reltime now;
319 :
320 220 : os_get_reltime(&now);
321 :
322 220 : pbc = reg->pbc_sessions;
323 445 : while (pbc) {
324 219 : if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
325 107 : os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
326 107 : if (prev)
327 0 : prev->next = pbc->next;
328 : else
329 107 : reg->pbc_sessions = pbc->next;
330 107 : break;
331 : }
332 5 : prev = pbc;
333 5 : pbc = pbc->next;
334 : }
335 :
336 220 : if (!pbc) {
337 113 : pbc = os_zalloc(sizeof(*pbc));
338 113 : if (pbc == NULL)
339 220 : return;
340 113 : os_memcpy(pbc->addr, addr, ETH_ALEN);
341 113 : if (uuid_e)
342 113 : os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
343 : }
344 :
345 220 : pbc->next = reg->pbc_sessions;
346 220 : reg->pbc_sessions = pbc;
347 220 : pbc->timestamp = now;
348 :
349 : /* remove entries that have timed out */
350 220 : prev = pbc;
351 220 : pbc = pbc->next;
352 :
353 446 : while (pbc) {
354 6 : if (os_reltime_expired(&now, &pbc->timestamp,
355 : WPS_PBC_WALK_TIME)) {
356 0 : prev->next = NULL;
357 0 : wps_free_pbc_sessions(pbc);
358 0 : break;
359 : }
360 6 : prev = pbc;
361 6 : pbc = pbc->next;
362 : }
363 : }
364 :
365 :
366 52 : static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
367 : const u8 *uuid_e,
368 : const u8 *p2p_dev_addr)
369 : {
370 52 : struct wps_pbc_session *pbc, *prev = NULL, *tmp;
371 :
372 52 : pbc = reg->pbc_sessions;
373 157 : while (pbc) {
374 53 : if (os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0 ||
375 2 : (p2p_dev_addr && !is_zero_ether_addr(reg->p2p_dev_addr) &&
376 1 : os_memcmp(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
377 : 0)) {
378 53 : if (prev)
379 0 : prev->next = pbc->next;
380 : else
381 53 : reg->pbc_sessions = pbc->next;
382 53 : tmp = pbc;
383 53 : pbc = pbc->next;
384 318 : wpa_printf(MSG_DEBUG, "WPS: Removing PBC session for "
385 318 : "addr=" MACSTR, MAC2STR(tmp->addr));
386 53 : wpa_hexdump(MSG_DEBUG, "WPS: Removed UUID-E",
387 53 : tmp->uuid_e, WPS_UUID_LEN);
388 53 : os_free(tmp);
389 53 : continue;
390 : }
391 0 : prev = pbc;
392 0 : pbc = pbc->next;
393 : }
394 52 : }
395 :
396 :
397 326 : int wps_registrar_pbc_overlap(struct wps_registrar *reg,
398 : const u8 *addr, const u8 *uuid_e)
399 : {
400 326 : int count = 0;
401 : struct wps_pbc_session *pbc;
402 326 : struct wps_pbc_session *first = NULL;
403 : struct os_reltime now;
404 :
405 326 : os_get_reltime(&now);
406 :
407 326 : wpa_printf(MSG_DEBUG, "WPS: Checking active PBC sessions for overlap");
408 :
409 326 : if (uuid_e) {
410 221 : wpa_printf(MSG_DEBUG, "WPS: Add one for the requested UUID");
411 221 : wpa_hexdump(MSG_DEBUG, "WPS: Requested UUID",
412 : uuid_e, WPS_UUID_LEN);
413 221 : count++;
414 : }
415 :
416 559 : for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
417 1398 : wpa_printf(MSG_DEBUG, "WPS: Consider PBC session with " MACSTR,
418 1398 : MAC2STR(pbc->addr));
419 233 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E",
420 233 : pbc->uuid_e, WPS_UUID_LEN);
421 233 : if (os_reltime_expired(&now, &pbc->timestamp,
422 : WPS_PBC_WALK_TIME)) {
423 0 : wpa_printf(MSG_DEBUG, "WPS: PBC walk time has expired");
424 0 : break;
425 : }
426 242 : if (first &&
427 9 : os_memcmp(pbc->uuid_e, first->uuid_e, WPS_UUID_LEN) == 0) {
428 0 : wpa_printf(MSG_DEBUG, "WPS: Same Enrollee");
429 0 : continue; /* same Enrollee */
430 : }
431 452 : if (uuid_e == NULL ||
432 219 : os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN)) {
433 19 : wpa_printf(MSG_DEBUG, "WPS: New Enrollee");
434 19 : count++;
435 : }
436 233 : if (first == NULL)
437 224 : first = pbc;
438 : }
439 :
440 326 : wpa_printf(MSG_DEBUG, "WPS: %u active PBC session(s) found", count);
441 :
442 326 : return count > 1 ? 1 : 0;
443 : }
444 :
445 :
446 3078 : static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
447 : {
448 3078 : wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
449 3078 : wps->wps_state);
450 3078 : wpabuf_put_be16(msg, ATTR_WPS_STATE);
451 3078 : wpabuf_put_be16(msg, 1);
452 3078 : wpabuf_put_u8(msg, wps->wps_state);
453 3078 : return 0;
454 : }
455 :
456 :
457 : #ifdef CONFIG_WPS_UPNP
458 90 : static void wps_registrar_free_pending_m2(struct wps_context *wps)
459 : {
460 90 : struct upnp_pending_message *p, *p2, *prev = NULL;
461 90 : p = wps->upnp_msgs;
462 235 : while (p) {
463 55 : if (p->type == WPS_M2 || p->type == WPS_M2D) {
464 1 : if (prev == NULL)
465 1 : wps->upnp_msgs = p->next;
466 : else
467 0 : prev->next = p->next;
468 1 : wpa_printf(MSG_DEBUG, "WPS UPnP: Drop pending M2/M2D");
469 1 : p2 = p;
470 1 : p = p->next;
471 1 : wpabuf_free(p2->msg);
472 1 : os_free(p2);
473 1 : continue;
474 : }
475 54 : prev = p;
476 54 : p = p->next;
477 : }
478 90 : }
479 : #endif /* CONFIG_WPS_UPNP */
480 :
481 :
482 3078 : static int wps_build_ap_setup_locked(struct wps_context *wps,
483 : struct wpabuf *msg)
484 : {
485 3078 : if (wps->ap_setup_locked && wps->ap_setup_locked != 2) {
486 12 : wpa_printf(MSG_DEBUG, "WPS: * AP Setup Locked");
487 12 : wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
488 12 : wpabuf_put_be16(msg, 1);
489 12 : wpabuf_put_u8(msg, 1);
490 : }
491 3078 : return 0;
492 : }
493 :
494 :
495 3078 : static int wps_build_selected_registrar(struct wps_registrar *reg,
496 : struct wpabuf *msg)
497 : {
498 3078 : if (!reg->sel_reg_union)
499 1896 : return 0;
500 1182 : wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
501 1182 : wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
502 1182 : wpabuf_put_be16(msg, 1);
503 1182 : wpabuf_put_u8(msg, 1);
504 1182 : return 0;
505 : }
506 :
507 :
508 3078 : static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
509 : struct wpabuf *msg)
510 : {
511 3078 : u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
512 3078 : if (!reg->sel_reg_union)
513 1896 : return 0;
514 1182 : if (reg->sel_reg_dev_password_id_override >= 0)
515 314 : id = reg->sel_reg_dev_password_id_override;
516 1182 : wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
517 1182 : wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
518 1182 : wpabuf_put_be16(msg, 2);
519 1182 : wpabuf_put_be16(msg, id);
520 1182 : return 0;
521 : }
522 :
523 :
524 1539 : static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
525 : struct wpabuf *msg)
526 : {
527 1539 : u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
528 1539 : if (!reg->sel_reg_union)
529 948 : return 0;
530 591 : if (reg->sel_reg_dev_password_id_override >= 0)
531 157 : id = reg->sel_reg_dev_password_id_override;
532 591 : if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
533 587 : return 0;
534 4 : return wps_build_uuid_e(msg, reg->wps->uuid);
535 : }
536 :
537 :
538 345 : static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
539 : {
540 345 : *methods |= WPS_CONFIG_PUSHBUTTON;
541 345 : if ((conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON) ==
542 : WPS_CONFIG_VIRT_PUSHBUTTON)
543 0 : *methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
544 345 : if ((conf_methods & WPS_CONFIG_PHY_PUSHBUTTON) ==
545 : WPS_CONFIG_PHY_PUSHBUTTON)
546 0 : *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
547 345 : if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
548 345 : WPS_CONFIG_VIRT_PUSHBUTTON &&
549 345 : (*methods & WPS_CONFIG_PHY_PUSHBUTTON) !=
550 : WPS_CONFIG_PHY_PUSHBUTTON) {
551 : /*
552 : * Required to include virtual/physical flag, but we were not
553 : * configured with push button type, so have to default to one
554 : * of them.
555 : */
556 345 : *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
557 : }
558 345 : }
559 :
560 :
561 3078 : static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
562 : struct wpabuf *msg)
563 : {
564 : u16 methods;
565 3078 : if (!reg->sel_reg_union)
566 1896 : return 0;
567 1182 : methods = reg->wps->config_methods;
568 1182 : methods &= ~WPS_CONFIG_PUSHBUTTON;
569 1182 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
570 : WPS_CONFIG_PHY_PUSHBUTTON);
571 1182 : if (reg->pbc)
572 222 : wps_set_pushbutton(&methods, reg->wps->config_methods);
573 1182 : if (reg->sel_reg_config_methods_override >= 0)
574 1182 : methods = reg->sel_reg_config_methods_override;
575 1182 : wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
576 : methods);
577 1182 : wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
578 1182 : wpabuf_put_be16(msg, 2);
579 1182 : wpabuf_put_be16(msg, methods);
580 1182 : return 0;
581 : }
582 :
583 :
584 1539 : static int wps_build_probe_config_methods(struct wps_registrar *reg,
585 : struct wpabuf *msg)
586 : {
587 : u16 methods;
588 : /*
589 : * These are the methods that the AP supports as an Enrollee for adding
590 : * external Registrars.
591 : */
592 1539 : methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
593 1539 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
594 : WPS_CONFIG_PHY_PUSHBUTTON);
595 1539 : wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
596 1539 : wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
597 1539 : wpabuf_put_be16(msg, 2);
598 1539 : wpabuf_put_be16(msg, methods);
599 1539 : return 0;
600 : }
601 :
602 :
603 430 : static int wps_build_config_methods_r(struct wps_registrar *reg,
604 : struct wpabuf *msg)
605 : {
606 430 : return wps_build_config_methods(msg, reg->wps->config_methods);
607 : }
608 :
609 :
610 1596 : const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count)
611 : {
612 1596 : *count = 0;
613 :
614 3661 : while (*count < WPS_MAX_AUTHORIZED_MACS) {
615 2064 : if (is_zero_ether_addr(reg->authorized_macs_union[*count]))
616 1595 : break;
617 469 : (*count)++;
618 : }
619 :
620 1596 : return (const u8 *) reg->authorized_macs_union;
621 : }
622 :
623 :
624 : /**
625 : * wps_registrar_init - Initialize WPS Registrar data
626 : * @wps: Pointer to longterm WPS context
627 : * @cfg: Registrar configuration
628 : * Returns: Pointer to allocated Registrar data or %NULL on failure
629 : *
630 : * This function is used to initialize WPS Registrar functionality. It can be
631 : * used for a single Registrar run (e.g., when run in a supplicant) or multiple
632 : * runs (e.g., when run as an internal Registrar in an AP). Caller is
633 : * responsible for freeing the returned data with wps_registrar_deinit() when
634 : * Registrar functionality is not needed anymore.
635 : */
636 : struct wps_registrar *
637 1175 : wps_registrar_init(struct wps_context *wps,
638 : const struct wps_registrar_config *cfg)
639 : {
640 1175 : struct wps_registrar *reg = os_zalloc(sizeof(*reg));
641 1175 : if (reg == NULL)
642 1 : return NULL;
643 :
644 1174 : dl_list_init(®->pins);
645 1174 : dl_list_init(®->nfc_pw_tokens);
646 1174 : reg->wps = wps;
647 1174 : reg->new_psk_cb = cfg->new_psk_cb;
648 1174 : reg->set_ie_cb = cfg->set_ie_cb;
649 1174 : reg->pin_needed_cb = cfg->pin_needed_cb;
650 1174 : reg->reg_success_cb = cfg->reg_success_cb;
651 1174 : reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
652 1174 : reg->enrollee_seen_cb = cfg->enrollee_seen_cb;
653 1174 : reg->cb_ctx = cfg->cb_ctx;
654 1174 : reg->skip_cred_build = cfg->skip_cred_build;
655 1174 : if (cfg->extra_cred) {
656 2 : reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
657 : cfg->extra_cred_len);
658 2 : if (reg->extra_cred == NULL) {
659 0 : os_free(reg);
660 0 : return NULL;
661 : }
662 : }
663 1174 : reg->disable_auto_conf = cfg->disable_auto_conf;
664 1174 : reg->sel_reg_dev_password_id_override = -1;
665 1174 : reg->sel_reg_config_methods_override = -1;
666 1174 : reg->static_wep_only = cfg->static_wep_only;
667 1174 : reg->dualband = cfg->dualband;
668 1174 : reg->force_per_enrollee_psk = cfg->force_per_enrollee_psk;
669 :
670 1174 : if (wps_set_ie(reg)) {
671 0 : wps_registrar_deinit(reg);
672 0 : return NULL;
673 : }
674 :
675 1174 : return reg;
676 : }
677 :
678 :
679 6043 : void wps_registrar_flush(struct wps_registrar *reg)
680 : {
681 6043 : if (reg == NULL)
682 6043 : return;
683 6043 : wps_free_pins(®->pins);
684 6043 : wps_free_nfc_pw_tokens(®->nfc_pw_tokens, 0);
685 6043 : wps_free_pbc_sessions(reg->pbc_sessions);
686 6043 : reg->pbc_sessions = NULL;
687 6043 : wps_free_devices(reg->devices);
688 6043 : reg->devices = NULL;
689 : #ifdef WPS_WORKAROUNDS
690 6043 : reg->pbc_ignore_start.sec = 0;
691 : #endif /* WPS_WORKAROUNDS */
692 : }
693 :
694 :
695 : /**
696 : * wps_registrar_deinit - Deinitialize WPS Registrar data
697 : * @reg: Registrar data from wps_registrar_init()
698 : */
699 1174 : void wps_registrar_deinit(struct wps_registrar *reg)
700 : {
701 1174 : if (reg == NULL)
702 1174 : return;
703 1174 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
704 1174 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
705 1174 : wps_registrar_flush(reg);
706 1174 : wpabuf_free(reg->extra_cred);
707 1174 : os_free(reg);
708 : }
709 :
710 :
711 315 : static void wps_registrar_invalidate_unused(struct wps_registrar *reg)
712 : {
713 : struct wps_uuid_pin *pin;
714 :
715 335 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
716 21 : if (pin->wildcard_uuid == 1 && !(pin->flags & PIN_LOCKED)) {
717 1 : wpa_printf(MSG_DEBUG, "WPS: Invalidate previously "
718 : "configured wildcard PIN");
719 1 : wps_registrar_remove_pin(reg, pin);
720 1 : break;
721 : }
722 : }
723 315 : }
724 :
725 :
726 : /**
727 : * wps_registrar_add_pin - Configure a new PIN for Registrar
728 : * @reg: Registrar data from wps_registrar_init()
729 : * @addr: Enrollee MAC address or %NULL if not known
730 : * @uuid: UUID-E or %NULL for wildcard (any UUID)
731 : * @pin: PIN (Device Password)
732 : * @pin_len: Length of pin in octets
733 : * @timeout: Time (in seconds) when the PIN will be invalidated; 0 = no timeout
734 : * Returns: 0 on success, -1 on failure
735 : */
736 334 : int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *addr,
737 : const u8 *uuid, const u8 *pin, size_t pin_len,
738 : int timeout)
739 : {
740 : struct wps_uuid_pin *p;
741 :
742 334 : p = os_zalloc(sizeof(*p));
743 334 : if (p == NULL)
744 0 : return -1;
745 334 : if (addr)
746 92 : os_memcpy(p->enrollee_addr, addr, ETH_ALEN);
747 334 : if (uuid == NULL)
748 315 : p->wildcard_uuid = 1;
749 : else
750 19 : os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
751 334 : p->pin = os_malloc(pin_len);
752 334 : if (p->pin == NULL) {
753 0 : os_free(p);
754 0 : return -1;
755 : }
756 334 : os_memcpy(p->pin, pin, pin_len);
757 334 : p->pin_len = pin_len;
758 :
759 334 : if (timeout) {
760 11 : p->flags |= PIN_EXPIRES;
761 11 : os_get_reltime(&p->expiration);
762 11 : p->expiration.sec += timeout;
763 : }
764 :
765 334 : if (p->wildcard_uuid)
766 315 : wps_registrar_invalidate_unused(reg);
767 :
768 334 : dl_list_add(®->pins, &p->list);
769 :
770 334 : wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
771 : timeout);
772 334 : wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
773 334 : wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
774 334 : reg->selected_registrar = 1;
775 334 : reg->pbc = 0;
776 334 : if (addr)
777 92 : wps_registrar_add_authorized_mac(reg, addr);
778 : else
779 242 : wps_registrar_add_authorized_mac(
780 : reg, (u8 *) "\xff\xff\xff\xff\xff\xff");
781 334 : wps_registrar_selected_registrar_changed(reg, 0);
782 334 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
783 334 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
784 : wps_registrar_set_selected_timeout,
785 : reg, NULL);
786 :
787 334 : return 0;
788 : }
789 :
790 :
791 235 : static void wps_registrar_remove_pin(struct wps_registrar *reg,
792 : struct wps_uuid_pin *pin)
793 : {
794 : u8 *addr;
795 235 : u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
796 :
797 235 : if (is_zero_ether_addr(pin->enrollee_addr))
798 148 : addr = bcast;
799 : else
800 87 : addr = pin->enrollee_addr;
801 235 : wps_registrar_remove_authorized_mac(reg, addr);
802 235 : wps_remove_pin(pin);
803 235 : wps_registrar_selected_registrar_changed(reg, 0);
804 235 : }
805 :
806 :
807 317 : static void wps_registrar_expire_pins(struct wps_registrar *reg)
808 : {
809 : struct wps_uuid_pin *pin, *prev;
810 : struct os_reltime now;
811 :
812 317 : os_get_reltime(&now);
813 643 : dl_list_for_each_safe(pin, prev, ®->pins, struct wps_uuid_pin, list)
814 : {
815 336 : if ((pin->flags & PIN_EXPIRES) &&
816 10 : os_reltime_before(&pin->expiration, &now)) {
817 1 : wpa_hexdump(MSG_DEBUG, "WPS: Expired PIN for UUID",
818 1 : pin->uuid, WPS_UUID_LEN);
819 1 : wps_registrar_remove_pin(reg, pin);
820 : }
821 : }
822 317 : }
823 :
824 :
825 : /**
826 : * wps_registrar_invalidate_wildcard_pin - Invalidate a wildcard PIN
827 : * @reg: Registrar data from wps_registrar_init()
828 : * @dev_pw: PIN to search for or %NULL to match any
829 : * @dev_pw_len: Length of dev_pw in octets
830 : * Returns: 0 on success, -1 if not wildcard PIN is enabled
831 : */
832 4 : static int wps_registrar_invalidate_wildcard_pin(struct wps_registrar *reg,
833 : const u8 *dev_pw,
834 : size_t dev_pw_len)
835 : {
836 : struct wps_uuid_pin *pin, *prev;
837 :
838 4 : dl_list_for_each_safe(pin, prev, ®->pins, struct wps_uuid_pin, list)
839 : {
840 5 : if (dev_pw && pin->pin &&
841 4 : (dev_pw_len != pin->pin_len ||
842 2 : os_memcmp_const(dev_pw, pin->pin, dev_pw_len) != 0))
843 0 : continue; /* different PIN */
844 3 : if (pin->wildcard_uuid) {
845 3 : wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
846 3 : pin->uuid, WPS_UUID_LEN);
847 3 : wps_registrar_remove_pin(reg, pin);
848 3 : return 0;
849 : }
850 : }
851 :
852 1 : return -1;
853 : }
854 :
855 :
856 : /**
857 : * wps_registrar_invalidate_pin - Invalidate a PIN for a specific UUID-E
858 : * @reg: Registrar data from wps_registrar_init()
859 : * @uuid: UUID-E
860 : * Returns: 0 on success, -1 on failure (e.g., PIN not found)
861 : */
862 303 : int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
863 : {
864 : struct wps_uuid_pin *pin, *prev;
865 :
866 303 : dl_list_for_each_safe(pin, prev, ®->pins, struct wps_uuid_pin, list)
867 : {
868 230 : if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
869 230 : wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
870 230 : pin->uuid, WPS_UUID_LEN);
871 230 : wps_registrar_remove_pin(reg, pin);
872 230 : return 0;
873 : }
874 : }
875 :
876 73 : return -1;
877 : }
878 :
879 :
880 317 : static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
881 : const u8 *uuid, size_t *pin_len)
882 : {
883 317 : struct wps_uuid_pin *pin, *found = NULL;
884 :
885 317 : wps_registrar_expire_pins(reg);
886 :
887 607 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
888 329 : if (!pin->wildcard_uuid &&
889 20 : os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
890 19 : found = pin;
891 19 : break;
892 : }
893 : }
894 :
895 317 : if (!found) {
896 : /* Check for wildcard UUIDs since none of the UUID-specific
897 : * PINs matched */
898 298 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
899 269 : if (pin->wildcard_uuid == 1 ||
900 0 : pin->wildcard_uuid == 2) {
901 269 : wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
902 : "PIN. Assigned it for this UUID-E");
903 269 : pin->wildcard_uuid++;
904 269 : os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
905 269 : found = pin;
906 269 : break;
907 : }
908 : }
909 : }
910 :
911 317 : if (!found)
912 29 : return NULL;
913 :
914 : /*
915 : * Lock the PIN to avoid attacks based on concurrent re-use of the PIN
916 : * that could otherwise avoid PIN invalidations.
917 : */
918 288 : if (found->flags & PIN_LOCKED) {
919 0 : wpa_printf(MSG_DEBUG, "WPS: Selected PIN locked - do not "
920 : "allow concurrent re-use");
921 0 : return NULL;
922 : }
923 288 : *pin_len = found->pin_len;
924 288 : found->flags |= PIN_LOCKED;
925 288 : return found->pin;
926 : }
927 :
928 :
929 : /**
930 : * wps_registrar_unlock_pin - Unlock a PIN for a specific UUID-E
931 : * @reg: Registrar data from wps_registrar_init()
932 : * @uuid: UUID-E
933 : * Returns: 0 on success, -1 on failure
934 : *
935 : * PINs are locked to enforce only one concurrent use. This function unlocks a
936 : * PIN to allow it to be used again. If the specified PIN was configured using
937 : * a wildcard UUID, it will be removed instead of allowing multiple uses.
938 : */
939 787 : int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
940 : {
941 : struct wps_uuid_pin *pin;
942 :
943 792 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
944 317 : if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
945 312 : if (pin->wildcard_uuid == 3) {
946 0 : wpa_printf(MSG_DEBUG, "WPS: Invalidating used "
947 : "wildcard PIN");
948 0 : return wps_registrar_invalidate_pin(reg, uuid);
949 : }
950 312 : pin->flags &= ~PIN_LOCKED;
951 312 : return 0;
952 : }
953 : }
954 :
955 475 : return -1;
956 : }
957 :
958 :
959 59 : static void wps_registrar_stop_pbc(struct wps_registrar *reg)
960 : {
961 59 : reg->selected_registrar = 0;
962 59 : reg->pbc = 0;
963 59 : os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
964 59 : wps_registrar_remove_authorized_mac(reg,
965 : (u8 *) "\xff\xff\xff\xff\xff\xff");
966 59 : wps_registrar_selected_registrar_changed(reg, 0);
967 59 : }
968 :
969 :
970 7 : static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx)
971 : {
972 7 : struct wps_registrar *reg = eloop_ctx;
973 :
974 7 : wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
975 7 : wps_pbc_timeout_event(reg->wps);
976 7 : wps_registrar_stop_pbc(reg);
977 7 : }
978 :
979 :
980 : /**
981 : * wps_registrar_button_pushed - Notify Registrar that AP button was pushed
982 : * @reg: Registrar data from wps_registrar_init()
983 : * @p2p_dev_addr: Limit allowed PBC devices to the specified P2P device, %NULL
984 : * indicates no such filtering
985 : * Returns: 0 on success, -1 on failure, -2 on session overlap
986 : *
987 : * This function is called on an AP when a push button is pushed to activate
988 : * PBC mode. The PBC mode will be stopped after walk time (2 minutes) timeout
989 : * or when a PBC registration is completed. If more than one Enrollee in active
990 : * PBC mode has been detected during the monitor time (previous 2 minutes), the
991 : * PBC mode is not activated and -2 is returned to indicate session overlap.
992 : * This is skipped if a specific Enrollee is selected.
993 : */
994 120 : int wps_registrar_button_pushed(struct wps_registrar *reg,
995 : const u8 *p2p_dev_addr)
996 : {
997 216 : if (p2p_dev_addr == NULL &&
998 96 : wps_registrar_pbc_overlap(reg, NULL, NULL)) {
999 3 : wpa_printf(MSG_DEBUG, "WPS: PBC overlap - do not start PBC "
1000 : "mode");
1001 3 : wps_pbc_overlap_event(reg->wps);
1002 3 : return -2;
1003 : }
1004 117 : wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
1005 117 : reg->force_pbc_overlap = 0;
1006 117 : reg->selected_registrar = 1;
1007 117 : reg->pbc = 1;
1008 117 : if (p2p_dev_addr)
1009 24 : os_memcpy(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
1010 : else
1011 93 : os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
1012 117 : wps_registrar_add_authorized_mac(reg,
1013 : (u8 *) "\xff\xff\xff\xff\xff\xff");
1014 117 : wps_registrar_selected_registrar_changed(reg, 0);
1015 :
1016 117 : wps_pbc_active_event(reg->wps);
1017 117 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1018 117 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1019 117 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
1020 : reg, NULL);
1021 117 : return 0;
1022 : }
1023 :
1024 :
1025 52 : static void wps_registrar_pbc_completed(struct wps_registrar *reg)
1026 : {
1027 52 : wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
1028 52 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1029 52 : wps_registrar_stop_pbc(reg);
1030 52 : wps_pbc_disable_event(reg->wps);
1031 52 : }
1032 :
1033 :
1034 239 : static void wps_registrar_pin_completed(struct wps_registrar *reg)
1035 : {
1036 239 : wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
1037 239 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1038 239 : reg->selected_registrar = 0;
1039 239 : wps_registrar_selected_registrar_changed(reg, 0);
1040 239 : }
1041 :
1042 :
1043 3 : void wps_registrar_complete(struct wps_registrar *registrar, const u8 *uuid_e,
1044 : const u8 *dev_pw, size_t dev_pw_len)
1045 : {
1046 3 : if (registrar->pbc) {
1047 1 : wps_registrar_remove_pbc_session(registrar,
1048 : uuid_e, NULL);
1049 1 : wps_registrar_pbc_completed(registrar);
1050 : #ifdef WPS_WORKAROUNDS
1051 1 : os_get_reltime(®istrar->pbc_ignore_start);
1052 : #endif /* WPS_WORKAROUNDS */
1053 1 : os_memcpy(registrar->pbc_ignore_uuid, uuid_e, WPS_UUID_LEN);
1054 : } else {
1055 2 : wps_registrar_pin_completed(registrar);
1056 : }
1057 :
1058 6 : if (dev_pw &&
1059 3 : wps_registrar_invalidate_wildcard_pin(registrar, dev_pw,
1060 : dev_pw_len) == 0) {
1061 2 : wpa_hexdump_key(MSG_DEBUG, "WPS: Invalidated wildcard PIN",
1062 : dev_pw, dev_pw_len);
1063 : }
1064 3 : }
1065 :
1066 :
1067 14 : int wps_registrar_wps_cancel(struct wps_registrar *reg)
1068 : {
1069 14 : if (reg->pbc) {
1070 6 : wpa_printf(MSG_DEBUG, "WPS: PBC is set - cancelling it");
1071 6 : wps_registrar_pbc_timeout(reg, NULL);
1072 6 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1073 6 : return 1;
1074 8 : } else if (reg->selected_registrar) {
1075 : /* PIN Method */
1076 1 : wpa_printf(MSG_DEBUG, "WPS: PIN is set - cancelling it");
1077 1 : wps_registrar_pin_completed(reg);
1078 1 : wps_registrar_invalidate_wildcard_pin(reg, NULL, 0);
1079 1 : return 1;
1080 : }
1081 7 : return 0;
1082 : }
1083 :
1084 :
1085 : /**
1086 : * wps_registrar_probe_req_rx - Notify Registrar of Probe Request
1087 : * @reg: Registrar data from wps_registrar_init()
1088 : * @addr: MAC address of the Probe Request sender
1089 : * @wps_data: WPS IE contents
1090 : *
1091 : * This function is called on an AP when a Probe Request with WPS IE is
1092 : * received. This is used to track PBC mode use and to detect possible overlap
1093 : * situation with other WPS APs.
1094 : */
1095 1622 : void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
1096 : const struct wpabuf *wps_data,
1097 : int p2p_wildcard)
1098 : {
1099 : struct wps_parse_attr attr;
1100 1622 : int skip_add = 0;
1101 :
1102 1622 : wpa_hexdump_buf(MSG_MSGDUMP,
1103 : "WPS: Probe Request with WPS data received",
1104 : wps_data);
1105 :
1106 1622 : if (wps_parse_msg(wps_data, &attr) < 0)
1107 1477 : return;
1108 :
1109 1622 : if (attr.config_methods == NULL) {
1110 1 : wpa_printf(MSG_DEBUG, "WPS: No Config Methods attribute in "
1111 : "Probe Request");
1112 1 : return;
1113 : }
1114 :
1115 1621 : if (attr.dev_password_id == NULL) {
1116 0 : wpa_printf(MSG_DEBUG, "WPS: No Device Password Id attribute "
1117 : "in Probe Request");
1118 0 : return;
1119 : }
1120 :
1121 3195 : if (reg->enrollee_seen_cb && attr.uuid_e &&
1122 3148 : attr.primary_dev_type && attr.request_type && !p2p_wildcard) {
1123 1574 : char *dev_name = NULL;
1124 1574 : if (attr.dev_name) {
1125 1574 : dev_name = os_zalloc(attr.dev_name_len + 1);
1126 1574 : if (dev_name) {
1127 1574 : os_memcpy(dev_name, attr.dev_name,
1128 : attr.dev_name_len);
1129 : }
1130 : }
1131 6296 : reg->enrollee_seen_cb(reg->cb_ctx, addr, attr.uuid_e,
1132 : attr.primary_dev_type,
1133 1574 : WPA_GET_BE16(attr.config_methods),
1134 1574 : WPA_GET_BE16(attr.dev_password_id),
1135 1574 : *attr.request_type, dev_name);
1136 1574 : os_free(dev_name);
1137 : }
1138 :
1139 1621 : if (WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
1140 1476 : return; /* Not PBC */
1141 :
1142 870 : wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
1143 870 : MACSTR, MAC2STR(addr));
1144 145 : if (attr.uuid_e == NULL) {
1145 0 : wpa_printf(MSG_DEBUG, "WPS: Invalid Probe Request WPS IE: No "
1146 : "UUID-E included");
1147 0 : return;
1148 : }
1149 145 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E from Probe Request", attr.uuid_e,
1150 : WPS_UUID_LEN);
1151 :
1152 : #ifdef WPS_WORKAROUNDS
1153 148 : if (reg->pbc_ignore_start.sec &&
1154 3 : os_memcmp(attr.uuid_e, reg->pbc_ignore_uuid, WPS_UUID_LEN) == 0) {
1155 : struct os_reltime now, dur;
1156 1 : os_get_reltime(&now);
1157 1 : os_reltime_sub(&now, ®->pbc_ignore_start, &dur);
1158 1 : if (dur.sec >= 0 && dur.sec < 5) {
1159 1 : wpa_printf(MSG_DEBUG, "WPS: Ignore PBC activation "
1160 : "based on Probe Request from the Enrollee "
1161 : "that just completed PBC provisioning");
1162 1 : skip_add = 1;
1163 : } else
1164 0 : reg->pbc_ignore_start.sec = 0;
1165 : }
1166 : #endif /* WPS_WORKAROUNDS */
1167 :
1168 145 : if (!skip_add)
1169 144 : wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
1170 145 : if (wps_registrar_pbc_overlap(reg, addr, attr.uuid_e)) {
1171 5 : wpa_printf(MSG_DEBUG, "WPS: PBC session overlap detected");
1172 5 : reg->force_pbc_overlap = 1;
1173 5 : wps_pbc_overlap_event(reg->wps);
1174 : }
1175 : }
1176 :
1177 :
1178 15 : int wps_cb_new_psk(struct wps_registrar *reg, const u8 *mac_addr,
1179 : const u8 *p2p_dev_addr, const u8 *psk, size_t psk_len)
1180 : {
1181 15 : if (reg->new_psk_cb == NULL)
1182 0 : return 0;
1183 :
1184 15 : return reg->new_psk_cb(reg->cb_ctx, mac_addr, p2p_dev_addr, psk,
1185 : psk_len);
1186 : }
1187 :
1188 :
1189 29 : static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
1190 : const struct wps_device_data *dev)
1191 : {
1192 29 : if (reg->pin_needed_cb == NULL)
1193 29 : return;
1194 :
1195 29 : reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
1196 : }
1197 :
1198 :
1199 248 : static void wps_cb_reg_success(struct wps_registrar *reg, const u8 *mac_addr,
1200 : const u8 *uuid_e, const u8 *dev_pw,
1201 : size_t dev_pw_len)
1202 : {
1203 248 : if (reg->reg_success_cb == NULL)
1204 265 : return;
1205 :
1206 231 : reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e, dev_pw, dev_pw_len);
1207 : }
1208 :
1209 :
1210 1539 : static int wps_cb_set_ie(struct wps_registrar *reg, struct wpabuf *beacon_ie,
1211 : struct wpabuf *probe_resp_ie)
1212 : {
1213 1539 : return reg->set_ie_cb(reg->cb_ctx, beacon_ie, probe_resp_ie);
1214 : }
1215 :
1216 :
1217 1129 : static void wps_cb_set_sel_reg(struct wps_registrar *reg)
1218 : {
1219 1129 : u16 methods = 0;
1220 1129 : if (reg->set_sel_reg_cb == NULL)
1221 2044 : return;
1222 :
1223 214 : if (reg->selected_registrar) {
1224 147 : methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
1225 147 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
1226 : WPS_CONFIG_PHY_PUSHBUTTON);
1227 147 : if (reg->pbc)
1228 6 : wps_set_pushbutton(&methods, reg->wps->config_methods);
1229 : }
1230 :
1231 428 : wpa_printf(MSG_DEBUG, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
1232 : "config_methods=0x%x pbc=%d methods=0x%x",
1233 214 : reg->selected_registrar, reg->wps->config_methods,
1234 : reg->pbc, methods);
1235 :
1236 428 : reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
1237 214 : reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
1238 : methods);
1239 : }
1240 :
1241 :
1242 2335 : static int wps_set_ie(struct wps_registrar *reg)
1243 : {
1244 : struct wpabuf *beacon;
1245 : struct wpabuf *probe;
1246 : const u8 *auth_macs;
1247 : size_t count;
1248 2335 : size_t vendor_len = 0;
1249 : int i;
1250 :
1251 2335 : if (reg->set_ie_cb == NULL)
1252 796 : return 0;
1253 :
1254 16929 : for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
1255 15390 : if (reg->wps->dev.vendor_ext[i]) {
1256 3 : vendor_len += 2 + 2;
1257 3 : vendor_len += wpabuf_len(reg->wps->dev.vendor_ext[i]);
1258 : }
1259 : }
1260 :
1261 1539 : beacon = wpabuf_alloc(400 + vendor_len);
1262 1539 : if (beacon == NULL)
1263 0 : return -1;
1264 1539 : probe = wpabuf_alloc(500 + vendor_len);
1265 1539 : if (probe == NULL) {
1266 0 : wpabuf_free(beacon);
1267 0 : return -1;
1268 : }
1269 :
1270 1539 : auth_macs = wps_authorized_macs(reg, &count);
1271 :
1272 1539 : wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
1273 :
1274 3078 : if (wps_build_version(beacon) ||
1275 3078 : wps_build_wps_state(reg->wps, beacon) ||
1276 3078 : wps_build_ap_setup_locked(reg->wps, beacon) ||
1277 3078 : wps_build_selected_registrar(reg, beacon) ||
1278 3078 : wps_build_sel_reg_dev_password_id(reg, beacon) ||
1279 3078 : wps_build_sel_reg_config_methods(reg, beacon) ||
1280 3078 : wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
1281 3101 : (reg->dualband && wps_build_rf_bands(®->wps->dev, beacon, 0)) ||
1282 3078 : wps_build_wfa_ext(beacon, 0, auth_macs, count) ||
1283 1539 : wps_build_vendor_ext(®->wps->dev, beacon)) {
1284 0 : wpabuf_free(beacon);
1285 0 : wpabuf_free(probe);
1286 0 : return -1;
1287 : }
1288 :
1289 : #ifdef CONFIG_P2P
1290 1736 : if (wps_build_dev_name(®->wps->dev, beacon) ||
1291 868 : wps_build_primary_dev_type(®->wps->dev, beacon)) {
1292 0 : wpabuf_free(beacon);
1293 0 : wpabuf_free(probe);
1294 0 : return -1;
1295 : }
1296 : #endif /* CONFIG_P2P */
1297 :
1298 1539 : wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
1299 :
1300 3078 : if (wps_build_version(probe) ||
1301 3078 : wps_build_wps_state(reg->wps, probe) ||
1302 3078 : wps_build_ap_setup_locked(reg->wps, probe) ||
1303 3078 : wps_build_selected_registrar(reg, probe) ||
1304 3078 : wps_build_sel_reg_dev_password_id(reg, probe) ||
1305 3078 : wps_build_sel_reg_config_methods(reg, probe) ||
1306 1539 : wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
1307 1539 : WPS_RESP_REGISTRAR) ||
1308 3078 : wps_build_uuid_e(probe, reg->wps->uuid) ||
1309 3078 : wps_build_device_attrs(®->wps->dev, probe) ||
1310 3078 : wps_build_probe_config_methods(reg, probe) ||
1311 3101 : (reg->dualband && wps_build_rf_bands(®->wps->dev, probe, 0)) ||
1312 3078 : wps_build_wfa_ext(probe, 0, auth_macs, count) ||
1313 1539 : wps_build_vendor_ext(®->wps->dev, probe)) {
1314 0 : wpabuf_free(beacon);
1315 0 : wpabuf_free(probe);
1316 0 : return -1;
1317 : }
1318 :
1319 1539 : beacon = wps_ie_encapsulate(beacon);
1320 1539 : probe = wps_ie_encapsulate(probe);
1321 :
1322 1539 : if (!beacon || !probe) {
1323 0 : wpabuf_free(beacon);
1324 0 : wpabuf_free(probe);
1325 0 : return -1;
1326 : }
1327 :
1328 1539 : if (reg->static_wep_only) {
1329 : /*
1330 : * Windows XP and Vista clients can get confused about
1331 : * EAP-Identity/Request when they probe the network with
1332 : * EAPOL-Start. In such a case, they may assume the network is
1333 : * using IEEE 802.1X and prompt user for a certificate while
1334 : * the correct (non-WPS) behavior would be to ask for the
1335 : * static WEP key. As a workaround, use Microsoft Provisioning
1336 : * IE to advertise that legacy 802.1X is not supported.
1337 : */
1338 0 : const u8 ms_wps[7] = {
1339 : WLAN_EID_VENDOR_SPECIFIC, 5,
1340 : /* Microsoft Provisioning IE (00:50:f2:5) */
1341 : 0x00, 0x50, 0xf2, 5,
1342 : 0x00 /* no legacy 802.1X or MS WPS */
1343 : };
1344 0 : wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
1345 : "into Beacon/Probe Response frames");
1346 0 : wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
1347 0 : wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
1348 : }
1349 :
1350 1539 : return wps_cb_set_ie(reg, beacon, probe);
1351 : }
1352 :
1353 :
1354 422 : static int wps_get_dev_password(struct wps_data *wps)
1355 : {
1356 : const u8 *pin;
1357 422 : size_t pin_len = 0;
1358 :
1359 422 : bin_clear_free(wps->dev_password, wps->dev_password_len);
1360 422 : wps->dev_password = NULL;
1361 :
1362 422 : if (wps->pbc) {
1363 76 : wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
1364 76 : pin = (const u8 *) "00000000";
1365 76 : pin_len = 8;
1366 : #ifdef CONFIG_WPS_NFC
1367 346 : } else if (wps->nfc_pw_token) {
1368 27 : if (wps->nfc_pw_token->pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
1369 : {
1370 16 : wpa_printf(MSG_DEBUG, "WPS: Using NFC connection "
1371 : "handover and abbreviated WPS handshake "
1372 : "without Device Password");
1373 16 : return 0;
1374 : }
1375 11 : wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from NFC "
1376 : "Password Token");
1377 11 : pin = wps->nfc_pw_token->dev_pw;
1378 11 : pin_len = wps->nfc_pw_token->dev_pw_len;
1379 322 : } else if (wps->dev_pw_id >= 0x10 &&
1380 5 : wps->wps->ap_nfc_dev_pw_id == wps->dev_pw_id &&
1381 2 : wps->wps->ap_nfc_dev_pw) {
1382 2 : wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from own NFC Password Token");
1383 2 : pin = wpabuf_head(wps->wps->ap_nfc_dev_pw);
1384 2 : pin_len = wpabuf_len(wps->wps->ap_nfc_dev_pw);
1385 : #endif /* CONFIG_WPS_NFC */
1386 : } else {
1387 317 : pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
1388 : &pin_len);
1389 317 : if (pin && wps->dev_pw_id >= 0x10) {
1390 0 : wpa_printf(MSG_DEBUG, "WPS: No match for OOB Device "
1391 : "Password ID, but PIN found");
1392 : /*
1393 : * See whether Enrollee is willing to use PIN instead.
1394 : */
1395 0 : wps->dev_pw_id = DEV_PW_DEFAULT;
1396 : }
1397 : }
1398 406 : if (pin == NULL) {
1399 29 : wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
1400 : "the Enrollee (context %p registrar %p)",
1401 29 : wps->wps, wps->wps->registrar);
1402 29 : wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1403 29 : &wps->peer_dev);
1404 29 : return -1;
1405 : }
1406 :
1407 377 : wps->dev_password = os_malloc(pin_len);
1408 377 : if (wps->dev_password == NULL)
1409 0 : return -1;
1410 377 : os_memcpy(wps->dev_password, pin, pin_len);
1411 377 : wps->dev_password_len = pin_len;
1412 :
1413 377 : return 0;
1414 : }
1415 :
1416 :
1417 431 : static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1418 : {
1419 431 : wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
1420 431 : wpabuf_put_be16(msg, ATTR_UUID_R);
1421 431 : wpabuf_put_be16(msg, WPS_UUID_LEN);
1422 431 : wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1423 431 : return 0;
1424 : }
1425 :
1426 :
1427 324 : static int wps_build_r_hash(struct wps_data *wps, struct wpabuf *msg)
1428 : {
1429 : u8 *hash;
1430 : const u8 *addr[4];
1431 : size_t len[4];
1432 :
1433 324 : if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1434 0 : return -1;
1435 324 : wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1436 324 : wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1437 324 : wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1438 :
1439 324 : if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
1440 0 : wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
1441 : "R-Hash derivation");
1442 0 : return -1;
1443 : }
1444 :
1445 324 : wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
1446 324 : wpabuf_put_be16(msg, ATTR_R_HASH1);
1447 324 : wpabuf_put_be16(msg, SHA256_MAC_LEN);
1448 324 : hash = wpabuf_put(msg, SHA256_MAC_LEN);
1449 : /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1450 324 : addr[0] = wps->snonce;
1451 324 : len[0] = WPS_SECRET_NONCE_LEN;
1452 324 : addr[1] = wps->psk1;
1453 324 : len[1] = WPS_PSK_LEN;
1454 324 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
1455 324 : len[2] = wpabuf_len(wps->dh_pubkey_e);
1456 324 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
1457 324 : len[3] = wpabuf_len(wps->dh_pubkey_r);
1458 324 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1459 324 : wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1460 :
1461 324 : wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
1462 324 : wpabuf_put_be16(msg, ATTR_R_HASH2);
1463 324 : wpabuf_put_be16(msg, SHA256_MAC_LEN);
1464 324 : hash = wpabuf_put(msg, SHA256_MAC_LEN);
1465 : /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1466 324 : addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1467 324 : addr[1] = wps->psk2;
1468 324 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1469 324 : wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1470 :
1471 324 : return 0;
1472 : }
1473 :
1474 :
1475 324 : static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1476 : {
1477 324 : wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
1478 324 : wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1479 324 : wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1480 324 : wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1481 324 : return 0;
1482 : }
1483 :
1484 :
1485 302 : static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1486 : {
1487 302 : wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
1488 302 : wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1489 302 : wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1490 302 : wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1491 : WPS_SECRET_NONCE_LEN);
1492 302 : return 0;
1493 : }
1494 :
1495 :
1496 306 : static int wps_build_cred_network_idx(struct wpabuf *msg,
1497 : const struct wps_credential *cred)
1498 : {
1499 306 : wpa_printf(MSG_DEBUG, "WPS: * Network Index (1)");
1500 306 : wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1501 306 : wpabuf_put_be16(msg, 1);
1502 306 : wpabuf_put_u8(msg, 1);
1503 306 : return 0;
1504 : }
1505 :
1506 :
1507 306 : static int wps_build_cred_ssid(struct wpabuf *msg,
1508 : const struct wps_credential *cred)
1509 : {
1510 306 : wpa_printf(MSG_DEBUG, "WPS: * SSID");
1511 612 : wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID for Credential",
1512 306 : cred->ssid, cred->ssid_len);
1513 306 : wpabuf_put_be16(msg, ATTR_SSID);
1514 306 : wpabuf_put_be16(msg, cred->ssid_len);
1515 306 : wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1516 306 : return 0;
1517 : }
1518 :
1519 :
1520 306 : static int wps_build_cred_auth_type(struct wpabuf *msg,
1521 : const struct wps_credential *cred)
1522 : {
1523 306 : wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
1524 306 : cred->auth_type);
1525 306 : wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1526 306 : wpabuf_put_be16(msg, 2);
1527 306 : wpabuf_put_be16(msg, cred->auth_type);
1528 306 : return 0;
1529 : }
1530 :
1531 :
1532 306 : static int wps_build_cred_encr_type(struct wpabuf *msg,
1533 : const struct wps_credential *cred)
1534 : {
1535 306 : wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
1536 306 : cred->encr_type);
1537 306 : wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1538 306 : wpabuf_put_be16(msg, 2);
1539 306 : wpabuf_put_be16(msg, cred->encr_type);
1540 306 : return 0;
1541 : }
1542 :
1543 :
1544 306 : static int wps_build_cred_network_key(struct wpabuf *msg,
1545 : const struct wps_credential *cred)
1546 : {
1547 306 : wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%d)",
1548 306 : (int) cred->key_len);
1549 612 : wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
1550 306 : cred->key, cred->key_len);
1551 306 : wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1552 306 : wpabuf_put_be16(msg, cred->key_len);
1553 306 : wpabuf_put_data(msg, cred->key, cred->key_len);
1554 306 : return 0;
1555 : }
1556 :
1557 :
1558 306 : static int wps_build_credential(struct wpabuf *msg,
1559 : const struct wps_credential *cred)
1560 : {
1561 612 : if (wps_build_cred_network_idx(msg, cred) ||
1562 612 : wps_build_cred_ssid(msg, cred) ||
1563 612 : wps_build_cred_auth_type(msg, cred) ||
1564 612 : wps_build_cred_encr_type(msg, cred) ||
1565 612 : wps_build_cred_network_key(msg, cred) ||
1566 306 : wps_build_mac_addr(msg, cred->mac_addr))
1567 0 : return -1;
1568 306 : return 0;
1569 : }
1570 :
1571 :
1572 1 : int wps_build_credential_wrap(struct wpabuf *msg,
1573 : const struct wps_credential *cred)
1574 : {
1575 : struct wpabuf *wbuf;
1576 1 : wbuf = wpabuf_alloc(200);
1577 1 : if (wbuf == NULL)
1578 0 : return -1;
1579 1 : if (wps_build_credential(wbuf, cred)) {
1580 0 : wpabuf_free(wbuf);
1581 0 : return -1;
1582 : }
1583 1 : wpabuf_put_be16(msg, ATTR_CRED);
1584 1 : wpabuf_put_be16(msg, wpabuf_len(wbuf));
1585 1 : wpabuf_put_buf(msg, wbuf);
1586 1 : wpabuf_free(wbuf);
1587 1 : return 0;
1588 : }
1589 :
1590 :
1591 261 : int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1592 : {
1593 : struct wpabuf *cred;
1594 :
1595 261 : if (wps->wps->registrar->skip_cred_build)
1596 2 : goto skip_cred_build;
1597 :
1598 259 : wpa_printf(MSG_DEBUG, "WPS: * Credential");
1599 259 : if (wps->use_cred) {
1600 13 : os_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
1601 13 : goto use_provided;
1602 : }
1603 246 : os_memset(&wps->cred, 0, sizeof(wps->cred));
1604 :
1605 246 : os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1606 246 : wps->cred.ssid_len = wps->wps->ssid_len;
1607 :
1608 : /* Select the best authentication and encryption type */
1609 246 : if (wps->auth_type & WPS_AUTH_WPA2PSK)
1610 246 : wps->auth_type = WPS_AUTH_WPA2PSK;
1611 0 : else if (wps->auth_type & WPS_AUTH_WPAPSK)
1612 0 : wps->auth_type = WPS_AUTH_WPAPSK;
1613 0 : else if (wps->auth_type & WPS_AUTH_OPEN)
1614 0 : wps->auth_type = WPS_AUTH_OPEN;
1615 : else {
1616 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1617 0 : wps->auth_type);
1618 0 : return -1;
1619 : }
1620 246 : wps->cred.auth_type = wps->auth_type;
1621 :
1622 246 : if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1623 0 : wps->auth_type == WPS_AUTH_WPAPSK) {
1624 492 : if (wps->encr_type & WPS_ENCR_AES)
1625 246 : wps->encr_type = WPS_ENCR_AES;
1626 0 : else if (wps->encr_type & WPS_ENCR_TKIP)
1627 0 : wps->encr_type = WPS_ENCR_TKIP;
1628 : else {
1629 0 : wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1630 : "type for WPA/WPA2");
1631 0 : return -1;
1632 : }
1633 : } else {
1634 0 : if (wps->encr_type & WPS_ENCR_NONE)
1635 0 : wps->encr_type = WPS_ENCR_NONE;
1636 : #ifdef CONFIG_TESTING_OPTIONS
1637 0 : else if (wps->encr_type & WPS_ENCR_WEP)
1638 0 : wps->encr_type = WPS_ENCR_WEP;
1639 : #endif /* CONFIG_TESTING_OPTIONS */
1640 : else {
1641 0 : wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1642 : "type for non-WPA/WPA2 mode");
1643 0 : return -1;
1644 : }
1645 : }
1646 246 : wps->cred.encr_type = wps->encr_type;
1647 : /*
1648 : * Set MAC address in the Credential to be the Enrollee's MAC address
1649 : */
1650 246 : os_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ETH_ALEN);
1651 :
1652 253 : if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1653 14 : !wps->wps->registrar->disable_auto_conf) {
1654 : u8 r[16];
1655 : /* Generate a random passphrase */
1656 7 : if (random_pool_ready() != 1 ||
1657 7 : random_get_bytes(r, sizeof(r)) < 0) {
1658 0 : wpa_printf(MSG_INFO,
1659 : "WPS: Could not generate random PSK");
1660 0 : return -1;
1661 : }
1662 7 : os_free(wps->new_psk);
1663 7 : wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1664 7 : if (wps->new_psk == NULL)
1665 0 : return -1;
1666 7 : wps->new_psk_len--; /* remove newline */
1667 49 : while (wps->new_psk_len &&
1668 21 : wps->new_psk[wps->new_psk_len - 1] == '=')
1669 14 : wps->new_psk_len--;
1670 14 : wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1671 7 : wps->new_psk, wps->new_psk_len);
1672 7 : os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1673 7 : wps->cred.key_len = wps->new_psk_len;
1674 470 : } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1675 577 : wps->use_psk_key && wps->wps->psk_set) {
1676 : char hex[65];
1677 173 : wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
1678 173 : wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
1679 173 : os_memcpy(wps->cred.key, hex, 32 * 2);
1680 173 : wps->cred.key_len = 32 * 2;
1681 124 : } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1682 58 : wps->wps->network_key) {
1683 51 : os_memcpy(wps->cred.key, wps->wps->network_key,
1684 : wps->wps->network_key_len);
1685 51 : wps->cred.key_len = wps->wps->network_key_len;
1686 15 : } else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1687 : char hex[65];
1688 : /* Generate a random per-device PSK */
1689 15 : os_free(wps->new_psk);
1690 15 : wps->new_psk_len = 32;
1691 15 : wps->new_psk = os_malloc(wps->new_psk_len);
1692 15 : if (wps->new_psk == NULL)
1693 3 : return -1;
1694 14 : if (random_pool_ready() != 1 ||
1695 14 : random_get_bytes(wps->new_psk, wps->new_psk_len) < 0) {
1696 1 : wpa_printf(MSG_INFO,
1697 : "WPS: Could not generate random PSK");
1698 1 : os_free(wps->new_psk);
1699 1 : wps->new_psk = NULL;
1700 1 : return -1;
1701 : }
1702 26 : wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1703 13 : wps->new_psk, wps->new_psk_len);
1704 13 : wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1705 : wps->new_psk_len);
1706 13 : os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1707 13 : wps->cred.key_len = wps->new_psk_len * 2;
1708 : }
1709 :
1710 : use_provided:
1711 : #ifdef CONFIG_WPS_TESTING
1712 257 : if (wps_testing_dummy_cred)
1713 1 : cred = wpabuf_alloc(200);
1714 : else
1715 256 : cred = NULL;
1716 257 : if (cred) {
1717 : struct wps_credential dummy;
1718 1 : wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
1719 1 : os_memset(&dummy, 0, sizeof(dummy));
1720 1 : os_memcpy(dummy.ssid, "dummy", 5);
1721 1 : dummy.ssid_len = 5;
1722 1 : dummy.auth_type = WPS_AUTH_WPA2PSK;
1723 1 : dummy.encr_type = WPS_ENCR_AES;
1724 1 : os_memcpy(dummy.key, "dummy psk", 9);
1725 1 : dummy.key_len = 9;
1726 1 : os_memcpy(dummy.mac_addr, wps->mac_addr_e, ETH_ALEN);
1727 1 : wps_build_credential(cred, &dummy);
1728 1 : wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
1729 :
1730 1 : wpabuf_put_be16(msg, ATTR_CRED);
1731 1 : wpabuf_put_be16(msg, wpabuf_len(cred));
1732 1 : wpabuf_put_buf(msg, cred);
1733 :
1734 1 : wpabuf_free(cred);
1735 : }
1736 : #endif /* CONFIG_WPS_TESTING */
1737 :
1738 257 : cred = wpabuf_alloc(200);
1739 257 : if (cred == NULL)
1740 1 : return -1;
1741 :
1742 256 : if (wps_build_credential(cred, &wps->cred)) {
1743 0 : wpabuf_free(cred);
1744 0 : return -1;
1745 : }
1746 :
1747 256 : wpabuf_put_be16(msg, ATTR_CRED);
1748 256 : wpabuf_put_be16(msg, wpabuf_len(cred));
1749 256 : wpabuf_put_buf(msg, cred);
1750 256 : wpabuf_free(cred);
1751 :
1752 : skip_cred_build:
1753 258 : if (wps->wps->registrar->extra_cred) {
1754 2 : wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
1755 2 : wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1756 : }
1757 :
1758 258 : return 0;
1759 : }
1760 :
1761 :
1762 48 : static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1763 : {
1764 48 : wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
1765 :
1766 48 : if (wps_build_credential(msg, &wps->cred))
1767 0 : return -1;
1768 :
1769 48 : return 0;
1770 : }
1771 :
1772 :
1773 39 : static struct wpabuf * wps_build_ap_cred(struct wps_data *wps)
1774 : {
1775 : struct wpabuf *msg, *plain;
1776 :
1777 39 : msg = wpabuf_alloc(1000);
1778 39 : if (msg == NULL)
1779 0 : return NULL;
1780 :
1781 39 : plain = wpabuf_alloc(200);
1782 39 : if (plain == NULL) {
1783 0 : wpabuf_free(msg);
1784 0 : return NULL;
1785 : }
1786 :
1787 39 : if (wps_build_ap_settings(wps, plain)) {
1788 0 : wpabuf_free(plain);
1789 0 : wpabuf_free(msg);
1790 0 : return NULL;
1791 : }
1792 :
1793 39 : wpabuf_put_be16(msg, ATTR_CRED);
1794 39 : wpabuf_put_be16(msg, wpabuf_len(plain));
1795 39 : wpabuf_put_buf(msg, plain);
1796 39 : wpabuf_free(plain);
1797 :
1798 39 : return msg;
1799 : }
1800 :
1801 :
1802 393 : static struct wpabuf * wps_build_m2(struct wps_data *wps)
1803 : {
1804 : struct wpabuf *msg;
1805 393 : int config_in_m2 = 0;
1806 :
1807 393 : if (random_get_bytes(wps->nonce_r, WPS_NONCE_LEN) < 0)
1808 0 : return NULL;
1809 393 : wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1810 393 : wps->nonce_r, WPS_NONCE_LEN);
1811 393 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1812 :
1813 393 : wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1814 393 : msg = wpabuf_alloc(1000);
1815 393 : if (msg == NULL)
1816 0 : return NULL;
1817 :
1818 786 : if (wps_build_version(msg) ||
1819 786 : wps_build_msg_type(msg, WPS_M2) ||
1820 786 : wps_build_enrollee_nonce(wps, msg) ||
1821 786 : wps_build_registrar_nonce(wps, msg) ||
1822 786 : wps_build_uuid_r(wps, msg) ||
1823 785 : wps_build_public_key(wps, msg) ||
1824 784 : wps_derive_keys(wps) ||
1825 784 : wps_build_auth_type_flags(wps, msg) ||
1826 784 : wps_build_encr_type_flags(wps, msg) ||
1827 784 : wps_build_conn_type_flags(wps, msg) ||
1828 784 : wps_build_config_methods_r(wps->wps->registrar, msg) ||
1829 784 : wps_build_device_attrs(&wps->wps->dev, msg) ||
1830 392 : wps_build_rf_bands(&wps->wps->dev, msg,
1831 784 : wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1832 784 : wps_build_assoc_state(wps, msg) ||
1833 784 : wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1834 784 : wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1835 784 : wps_build_os_version(&wps->wps->dev, msg) ||
1836 392 : wps_build_wfa_ext(msg, 0, NULL, 0)) {
1837 1 : wpabuf_free(msg);
1838 1 : return NULL;
1839 : }
1840 :
1841 : #ifdef CONFIG_WPS_NFC
1842 415 : if (wps->nfc_pw_token && wps->nfc_pw_token->pk_hash_provided_oob &&
1843 23 : wps->nfc_pw_token->pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1844 : /*
1845 : * Use abbreviated handshake since public key hash allowed
1846 : * Enrollee to validate our public key similarly to how Enrollee
1847 : * public key was validated. There is no need to validate Device
1848 : * Password in this case.
1849 : */
1850 16 : struct wpabuf *plain = wpabuf_alloc(500);
1851 32 : if (plain == NULL ||
1852 32 : wps_build_cred(wps, plain) ||
1853 32 : wps_build_key_wrap_auth(wps, plain) ||
1854 16 : wps_build_encr_settings(wps, msg, plain)) {
1855 0 : wpabuf_free(msg);
1856 0 : wpabuf_free(plain);
1857 0 : return NULL;
1858 : }
1859 16 : wpabuf_free(plain);
1860 16 : config_in_m2 = 1;
1861 : }
1862 : #endif /* CONFIG_WPS_NFC */
1863 :
1864 392 : if (wps_build_authenticator(wps, msg)) {
1865 0 : wpabuf_free(msg);
1866 0 : return NULL;
1867 : }
1868 :
1869 392 : wps->int_reg = 1;
1870 392 : wps->state = config_in_m2 ? RECV_DONE : RECV_M3;
1871 392 : return msg;
1872 : }
1873 :
1874 :
1875 38 : static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1876 : {
1877 : struct wpabuf *msg;
1878 38 : u16 err = wps->config_error;
1879 :
1880 38 : wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1881 38 : msg = wpabuf_alloc(1000);
1882 38 : if (msg == NULL)
1883 0 : return NULL;
1884 :
1885 38 : if (wps->wps->ap && wps->wps->ap_setup_locked &&
1886 : err == WPS_CFG_NO_ERROR)
1887 5 : err = WPS_CFG_SETUP_LOCKED;
1888 :
1889 76 : if (wps_build_version(msg) ||
1890 76 : wps_build_msg_type(msg, WPS_M2D) ||
1891 76 : wps_build_enrollee_nonce(wps, msg) ||
1892 76 : wps_build_registrar_nonce(wps, msg) ||
1893 76 : wps_build_uuid_r(wps, msg) ||
1894 76 : wps_build_auth_type_flags(wps, msg) ||
1895 76 : wps_build_encr_type_flags(wps, msg) ||
1896 76 : wps_build_conn_type_flags(wps, msg) ||
1897 76 : wps_build_config_methods_r(wps->wps->registrar, msg) ||
1898 76 : wps_build_device_attrs(&wps->wps->dev, msg) ||
1899 38 : wps_build_rf_bands(&wps->wps->dev, msg,
1900 76 : wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1901 76 : wps_build_assoc_state(wps, msg) ||
1902 76 : wps_build_config_error(msg, err) ||
1903 76 : wps_build_os_version(&wps->wps->dev, msg) ||
1904 38 : wps_build_wfa_ext(msg, 0, NULL, 0)) {
1905 0 : wpabuf_free(msg);
1906 0 : return NULL;
1907 : }
1908 :
1909 38 : wps->state = RECV_M2D_ACK;
1910 38 : return msg;
1911 : }
1912 :
1913 :
1914 324 : static struct wpabuf * wps_build_m4(struct wps_data *wps)
1915 : {
1916 : struct wpabuf *msg, *plain;
1917 :
1918 324 : wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1919 :
1920 324 : wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
1921 :
1922 324 : plain = wpabuf_alloc(200);
1923 324 : if (plain == NULL)
1924 0 : return NULL;
1925 :
1926 324 : msg = wpabuf_alloc(1000);
1927 324 : if (msg == NULL) {
1928 0 : wpabuf_free(plain);
1929 0 : return NULL;
1930 : }
1931 :
1932 648 : if (wps_build_version(msg) ||
1933 648 : wps_build_msg_type(msg, WPS_M4) ||
1934 648 : wps_build_enrollee_nonce(wps, msg) ||
1935 648 : wps_build_r_hash(wps, msg) ||
1936 648 : wps_build_r_snonce1(wps, plain) ||
1937 648 : wps_build_key_wrap_auth(wps, plain) ||
1938 647 : wps_build_encr_settings(wps, msg, plain) ||
1939 646 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
1940 323 : wps_build_authenticator(wps, msg)) {
1941 1 : wpabuf_free(plain);
1942 1 : wpabuf_free(msg);
1943 1 : return NULL;
1944 : }
1945 323 : wpabuf_free(plain);
1946 :
1947 323 : wps->state = RECV_M5;
1948 323 : return msg;
1949 : }
1950 :
1951 :
1952 302 : static struct wpabuf * wps_build_m6(struct wps_data *wps)
1953 : {
1954 : struct wpabuf *msg, *plain;
1955 :
1956 302 : wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1957 :
1958 302 : plain = wpabuf_alloc(200);
1959 302 : if (plain == NULL)
1960 0 : return NULL;
1961 :
1962 302 : msg = wpabuf_alloc(1000);
1963 302 : if (msg == NULL) {
1964 0 : wpabuf_free(plain);
1965 0 : return NULL;
1966 : }
1967 :
1968 604 : if (wps_build_version(msg) ||
1969 604 : wps_build_msg_type(msg, WPS_M6) ||
1970 604 : wps_build_enrollee_nonce(wps, msg) ||
1971 604 : wps_build_r_snonce2(wps, plain) ||
1972 604 : wps_build_key_wrap_auth(wps, plain) ||
1973 604 : wps_build_encr_settings(wps, msg, plain) ||
1974 604 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
1975 302 : wps_build_authenticator(wps, msg)) {
1976 0 : wpabuf_free(plain);
1977 0 : wpabuf_free(msg);
1978 0 : return NULL;
1979 : }
1980 302 : wpabuf_free(plain);
1981 :
1982 302 : wps->wps_pin_revealed = 1;
1983 302 : wps->state = RECV_M7;
1984 302 : return msg;
1985 : }
1986 :
1987 :
1988 249 : static struct wpabuf * wps_build_m8(struct wps_data *wps)
1989 : {
1990 : struct wpabuf *msg, *plain;
1991 :
1992 249 : wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
1993 :
1994 249 : plain = wpabuf_alloc(500);
1995 249 : if (plain == NULL)
1996 0 : return NULL;
1997 :
1998 249 : msg = wpabuf_alloc(1000);
1999 249 : if (msg == NULL) {
2000 0 : wpabuf_free(plain);
2001 0 : return NULL;
2002 : }
2003 :
2004 498 : if (wps_build_version(msg) ||
2005 498 : wps_build_msg_type(msg, WPS_M8) ||
2006 498 : wps_build_enrollee_nonce(wps, msg) ||
2007 513 : ((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
2008 510 : (!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
2009 492 : wps_build_key_wrap_auth(wps, plain) ||
2010 492 : wps_build_encr_settings(wps, msg, plain) ||
2011 492 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
2012 246 : wps_build_authenticator(wps, msg)) {
2013 3 : wpabuf_free(plain);
2014 3 : wpabuf_free(msg);
2015 3 : return NULL;
2016 : }
2017 246 : wpabuf_free(plain);
2018 :
2019 246 : wps->state = RECV_DONE;
2020 246 : return msg;
2021 : }
2022 :
2023 :
2024 1423 : struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
2025 : enum wsc_op_code *op_code)
2026 : {
2027 : struct wpabuf *msg;
2028 :
2029 : #ifdef CONFIG_WPS_UPNP
2030 1423 : if (!wps->int_reg && wps->wps->wps_upnp) {
2031 52 : struct upnp_pending_message *p, *prev = NULL;
2032 52 : if (wps->ext_reg > 1)
2033 27 : wps_registrar_free_pending_m2(wps->wps);
2034 52 : p = wps->wps->upnp_msgs;
2035 : /* TODO: check pending message MAC address */
2036 104 : while (p && p->next) {
2037 0 : prev = p;
2038 0 : p = p->next;
2039 : }
2040 52 : if (p) {
2041 39 : wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
2042 : "UPnP");
2043 39 : if (prev)
2044 0 : prev->next = NULL;
2045 : else
2046 39 : wps->wps->upnp_msgs = NULL;
2047 39 : msg = p->msg;
2048 39 : switch (p->type) {
2049 : case WPS_WSC_ACK:
2050 0 : *op_code = WSC_ACK;
2051 0 : break;
2052 : case WPS_WSC_NACK:
2053 0 : *op_code = WSC_NACK;
2054 0 : break;
2055 : default:
2056 39 : *op_code = WSC_MSG;
2057 39 : break;
2058 : }
2059 39 : os_free(p);
2060 39 : if (wps->ext_reg == 0)
2061 0 : wps->ext_reg = 1;
2062 39 : return msg;
2063 : }
2064 : }
2065 1384 : if (wps->ext_reg) {
2066 0 : wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
2067 : "pending message available");
2068 0 : return NULL;
2069 : }
2070 : #endif /* CONFIG_WPS_UPNP */
2071 :
2072 1384 : switch (wps->state) {
2073 : case SEND_M2:
2074 422 : if (wps_get_dev_password(wps) < 0)
2075 29 : msg = wps_build_m2d(wps);
2076 : else
2077 393 : msg = wps_build_m2(wps);
2078 422 : *op_code = WSC_MSG;
2079 422 : break;
2080 : case SEND_M2D:
2081 9 : msg = wps_build_m2d(wps);
2082 9 : *op_code = WSC_MSG;
2083 9 : break;
2084 : case SEND_M4:
2085 324 : msg = wps_build_m4(wps);
2086 324 : *op_code = WSC_MSG;
2087 324 : break;
2088 : case SEND_M6:
2089 302 : msg = wps_build_m6(wps);
2090 302 : *op_code = WSC_MSG;
2091 302 : break;
2092 : case SEND_M8:
2093 249 : msg = wps_build_m8(wps);
2094 249 : *op_code = WSC_MSG;
2095 249 : break;
2096 : case RECV_DONE:
2097 6 : msg = wps_build_wsc_ack(wps);
2098 6 : *op_code = WSC_ACK;
2099 6 : break;
2100 : case SEND_WSC_NACK:
2101 72 : msg = wps_build_wsc_nack(wps);
2102 72 : *op_code = WSC_NACK;
2103 72 : break;
2104 : default:
2105 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
2106 0 : "a message", wps->state);
2107 0 : msg = NULL;
2108 0 : break;
2109 : }
2110 :
2111 1384 : if (*op_code == WSC_MSG && msg) {
2112 : /* Save a copy of the last message for Authenticator derivation
2113 : */
2114 1301 : wpabuf_free(wps->last_msg);
2115 1301 : wps->last_msg = wpabuf_dup(msg);
2116 : }
2117 :
2118 1384 : return msg;
2119 : }
2120 :
2121 :
2122 455 : static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
2123 : {
2124 455 : if (e_nonce == NULL) {
2125 1 : wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
2126 1 : return -1;
2127 : }
2128 :
2129 454 : os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
2130 454 : wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
2131 454 : wps->nonce_e, WPS_NONCE_LEN);
2132 :
2133 454 : return 0;
2134 : }
2135 :
2136 :
2137 925 : static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
2138 : {
2139 925 : if (r_nonce == NULL) {
2140 0 : wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
2141 0 : return -1;
2142 : }
2143 :
2144 925 : if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
2145 0 : wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
2146 0 : return -1;
2147 : }
2148 :
2149 925 : return 0;
2150 : }
2151 :
2152 :
2153 457 : static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
2154 : {
2155 457 : if (uuid_e == NULL) {
2156 1 : wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
2157 1 : return -1;
2158 : }
2159 :
2160 456 : os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
2161 456 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
2162 :
2163 456 : return 0;
2164 : }
2165 :
2166 :
2167 434 : static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
2168 : {
2169 434 : if (pw_id == NULL) {
2170 1 : wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
2171 1 : return -1;
2172 : }
2173 :
2174 433 : wps->dev_pw_id = WPA_GET_BE16(pw_id);
2175 433 : wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
2176 :
2177 433 : return 0;
2178 : }
2179 :
2180 :
2181 326 : static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
2182 : {
2183 326 : if (e_hash1 == NULL) {
2184 1 : wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
2185 1 : return -1;
2186 : }
2187 :
2188 325 : os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
2189 325 : wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
2190 :
2191 325 : return 0;
2192 : }
2193 :
2194 :
2195 325 : static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
2196 : {
2197 325 : if (e_hash2 == NULL) {
2198 1 : wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
2199 1 : return -1;
2200 : }
2201 :
2202 324 : os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
2203 324 : wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
2204 :
2205 324 : return 0;
2206 : }
2207 :
2208 :
2209 304 : static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
2210 : {
2211 : u8 hash[SHA256_MAC_LEN];
2212 : const u8 *addr[4];
2213 : size_t len[4];
2214 :
2215 304 : if (e_snonce1 == NULL) {
2216 1 : wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
2217 1 : return -1;
2218 : }
2219 :
2220 303 : wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
2221 : WPS_SECRET_NONCE_LEN);
2222 :
2223 : /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
2224 303 : addr[0] = e_snonce1;
2225 303 : len[0] = WPS_SECRET_NONCE_LEN;
2226 303 : addr[1] = wps->psk1;
2227 303 : len[1] = WPS_PSK_LEN;
2228 303 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
2229 303 : len[2] = wpabuf_len(wps->dh_pubkey_e);
2230 303 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
2231 303 : len[3] = wpabuf_len(wps->dh_pubkey_r);
2232 303 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2233 :
2234 303 : if (os_memcmp_const(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
2235 1 : wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
2236 : "not match with the pre-committed value");
2237 1 : wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2238 1 : wps_pwd_auth_fail_event(wps->wps, 0, 1, wps->mac_addr_e);
2239 1 : return -1;
2240 : }
2241 :
2242 302 : wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
2243 : "half of the device password");
2244 :
2245 302 : return 0;
2246 : }
2247 :
2248 :
2249 290 : static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
2250 : {
2251 : u8 hash[SHA256_MAC_LEN];
2252 : const u8 *addr[4];
2253 : size_t len[4];
2254 :
2255 290 : if (e_snonce2 == NULL) {
2256 1 : wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
2257 1 : return -1;
2258 : }
2259 :
2260 289 : wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
2261 : WPS_SECRET_NONCE_LEN);
2262 :
2263 : /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
2264 289 : addr[0] = e_snonce2;
2265 289 : len[0] = WPS_SECRET_NONCE_LEN;
2266 289 : addr[1] = wps->psk2;
2267 289 : len[1] = WPS_PSK_LEN;
2268 289 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
2269 289 : len[2] = wpabuf_len(wps->dh_pubkey_e);
2270 289 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
2271 289 : len[3] = wpabuf_len(wps->dh_pubkey_r);
2272 289 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2273 :
2274 289 : if (os_memcmp_const(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
2275 1 : wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
2276 : "not match with the pre-committed value");
2277 1 : wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2278 1 : wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2279 1 : wps_pwd_auth_fail_event(wps->wps, 0, 2, wps->mac_addr_e);
2280 1 : return -1;
2281 : }
2282 :
2283 288 : wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
2284 : "half of the device password");
2285 288 : wps->wps_pin_revealed = 0;
2286 288 : wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
2287 :
2288 : /*
2289 : * In case wildcard PIN is used and WPS handshake succeeds in the first
2290 : * attempt, wps_registrar_unlock_pin() would not free the PIN, so make
2291 : * sure the PIN gets invalidated here.
2292 : */
2293 288 : wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2294 :
2295 288 : return 0;
2296 : }
2297 :
2298 :
2299 456 : static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
2300 : {
2301 456 : if (mac_addr == NULL) {
2302 1 : wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
2303 1 : return -1;
2304 : }
2305 :
2306 2730 : wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
2307 2730 : MAC2STR(mac_addr));
2308 455 : os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
2309 455 : os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
2310 :
2311 455 : return 0;
2312 : }
2313 :
2314 :
2315 454 : static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
2316 : size_t pk_len)
2317 : {
2318 454 : if (pk == NULL || pk_len == 0) {
2319 1 : wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
2320 1 : return -1;
2321 : }
2322 :
2323 453 : wpabuf_free(wps->dh_pubkey_e);
2324 453 : wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
2325 453 : if (wps->dh_pubkey_e == NULL)
2326 1 : return -1;
2327 :
2328 452 : return 0;
2329 : }
2330 :
2331 :
2332 452 : static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
2333 : {
2334 : u16 auth_types;
2335 :
2336 452 : if (auth == NULL) {
2337 1 : wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
2338 : "received");
2339 1 : return -1;
2340 : }
2341 :
2342 451 : auth_types = WPA_GET_BE16(auth);
2343 :
2344 451 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
2345 : auth_types);
2346 451 : wps->auth_type = wps->wps->auth_types & auth_types;
2347 451 : if (wps->auth_type == 0) {
2348 116 : wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2349 : "authentication types (own 0x%x Enrollee 0x%x)",
2350 58 : wps->wps->auth_types, auth_types);
2351 : #ifdef WPS_WORKAROUNDS
2352 : /*
2353 : * Some deployed implementations seem to advertise incorrect
2354 : * information in this attribute. For example, Linksys WRT350N
2355 : * seems to have a byteorder bug that breaks this negotiation.
2356 : * In order to interoperate with existing implementations,
2357 : * assume that the Enrollee supports everything we do.
2358 : */
2359 58 : wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2360 : "does not advertise supported authentication types "
2361 : "correctly");
2362 58 : wps->auth_type = wps->wps->auth_types;
2363 : #else /* WPS_WORKAROUNDS */
2364 : return -1;
2365 : #endif /* WPS_WORKAROUNDS */
2366 : }
2367 :
2368 451 : return 0;
2369 : }
2370 :
2371 :
2372 451 : static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
2373 : {
2374 : u16 encr_types;
2375 :
2376 451 : if (encr == NULL) {
2377 1 : wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
2378 : "received");
2379 1 : return -1;
2380 : }
2381 :
2382 450 : encr_types = WPA_GET_BE16(encr);
2383 :
2384 450 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
2385 : encr_types);
2386 450 : wps->encr_type = wps->wps->encr_types & encr_types;
2387 450 : if (wps->encr_type == 0) {
2388 114 : wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2389 : "encryption types (own 0x%x Enrollee 0x%x)",
2390 57 : wps->wps->encr_types, encr_types);
2391 : #ifdef WPS_WORKAROUNDS
2392 : /*
2393 : * Some deployed implementations seem to advertise incorrect
2394 : * information in this attribute. For example, Linksys WRT350N
2395 : * seems to have a byteorder bug that breaks this negotiation.
2396 : * In order to interoperate with existing implementations,
2397 : * assume that the Enrollee supports everything we do.
2398 : */
2399 57 : wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2400 : "does not advertise supported encryption types "
2401 : "correctly");
2402 57 : wps->encr_type = wps->wps->encr_types;
2403 : #else /* WPS_WORKAROUNDS */
2404 : return -1;
2405 : #endif /* WPS_WORKAROUNDS */
2406 : }
2407 :
2408 450 : return 0;
2409 : }
2410 :
2411 :
2412 450 : static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
2413 : {
2414 450 : if (conn == NULL) {
2415 1 : wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
2416 : "received");
2417 1 : return -1;
2418 : }
2419 :
2420 449 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
2421 449 : *conn);
2422 :
2423 449 : return 0;
2424 : }
2425 :
2426 :
2427 449 : static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
2428 : {
2429 : u16 m;
2430 :
2431 449 : if (methods == NULL) {
2432 1 : wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
2433 1 : return -1;
2434 : }
2435 :
2436 448 : m = WPA_GET_BE16(methods);
2437 :
2438 4032 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
2439 : "%s%s%s%s%s%s%s%s%s", m,
2440 448 : m & WPS_CONFIG_USBA ? " [USBA]" : "",
2441 448 : m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
2442 448 : m & WPS_CONFIG_LABEL ? " [Label]" : "",
2443 448 : m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
2444 448 : m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
2445 448 : m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
2446 448 : m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
2447 448 : m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
2448 448 : m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
2449 :
2450 448 : if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
2451 : /*
2452 : * The Enrollee does not have a display so it is unlikely to be
2453 : * able to show the passphrase to a user and as such, could
2454 : * benefit from receiving PSK to reduce key derivation time.
2455 : */
2456 92 : wpa_printf(MSG_DEBUG, "WPS: Prefer PSK format key due to "
2457 : "Enrollee not supporting display");
2458 92 : wps->use_psk_key = 1;
2459 : }
2460 :
2461 448 : return 0;
2462 : }
2463 :
2464 :
2465 448 : static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
2466 : {
2467 448 : if (state == NULL) {
2468 1 : wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
2469 : "received");
2470 1 : return -1;
2471 : }
2472 :
2473 447 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
2474 447 : *state);
2475 :
2476 447 : return 0;
2477 : }
2478 :
2479 :
2480 435 : static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
2481 : {
2482 : u16 a;
2483 :
2484 435 : if (assoc == NULL) {
2485 1 : wpa_printf(MSG_DEBUG, "WPS: No Association State received");
2486 1 : return -1;
2487 : }
2488 :
2489 434 : a = WPA_GET_BE16(assoc);
2490 434 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
2491 :
2492 434 : return 0;
2493 : }
2494 :
2495 :
2496 433 : static int wps_process_config_error(struct wps_data *wps, const u8 *err)
2497 : {
2498 : u16 e;
2499 :
2500 433 : if (err == NULL) {
2501 1 : wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2502 1 : return -1;
2503 : }
2504 :
2505 432 : e = WPA_GET_BE16(err);
2506 432 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2507 :
2508 432 : return 0;
2509 : }
2510 :
2511 :
2512 76 : static int wps_registrar_p2p_dev_addr_match(struct wps_data *wps)
2513 : {
2514 : #ifdef CONFIG_P2P
2515 27 : struct wps_registrar *reg = wps->wps->registrar;
2516 :
2517 27 : if (is_zero_ether_addr(reg->p2p_dev_addr))
2518 5 : return 1; /* no filtering in use */
2519 :
2520 22 : if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) != 0) {
2521 12 : wpa_printf(MSG_DEBUG, "WPS: No match on P2P Device Address "
2522 : "filtering for PBC: expected " MACSTR " was "
2523 : MACSTR " - indicate PBC session overlap",
2524 6 : MAC2STR(reg->p2p_dev_addr),
2525 6 : MAC2STR(wps->p2p_dev_addr));
2526 1 : return 0;
2527 : }
2528 : #endif /* CONFIG_P2P */
2529 70 : return 1;
2530 : }
2531 :
2532 :
2533 9 : static int wps_registrar_skip_overlap(struct wps_data *wps)
2534 : {
2535 : #ifdef CONFIG_P2P
2536 7 : struct wps_registrar *reg = wps->wps->registrar;
2537 :
2538 7 : if (is_zero_ether_addr(reg->p2p_dev_addr))
2539 2 : return 0; /* no specific Enrollee selected */
2540 :
2541 5 : if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) == 0) {
2542 4 : wpa_printf(MSG_DEBUG, "WPS: Skip PBC overlap due to selected "
2543 : "Enrollee match");
2544 4 : return 1;
2545 : }
2546 : #endif /* CONFIG_P2P */
2547 3 : return 0;
2548 : }
2549 :
2550 :
2551 458 : static enum wps_process_res wps_process_m1(struct wps_data *wps,
2552 : struct wps_parse_attr *attr)
2553 : {
2554 458 : wpa_printf(MSG_DEBUG, "WPS: Received M1");
2555 :
2556 458 : if (wps->state != RECV_M1) {
2557 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2558 1 : "receiving M1", wps->state);
2559 1 : return WPS_FAILURE;
2560 : }
2561 :
2562 913 : if (wps_process_uuid_e(wps, attr->uuid_e) ||
2563 911 : wps_process_mac_addr(wps, attr->mac_addr) ||
2564 909 : wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2565 906 : wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2566 903 : wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2567 901 : wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2568 899 : wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2569 897 : wps_process_config_methods(wps, attr->config_methods) ||
2570 895 : wps_process_wps_state(wps, attr->wps_state) ||
2571 883 : wps_process_device_attrs(&wps->peer_dev, attr) ||
2572 871 : wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2573 869 : wps_process_assoc_state(wps, attr->assoc_state) ||
2574 867 : wps_process_dev_password_id(wps, attr->dev_password_id) ||
2575 865 : wps_process_config_error(wps, attr->config_error) ||
2576 432 : wps_process_os_version(&wps->peer_dev, attr->os_version))
2577 26 : return WPS_FAILURE;
2578 :
2579 848 : if (wps->dev_pw_id < 0x10 &&
2580 606 : wps->dev_pw_id != DEV_PW_DEFAULT &&
2581 368 : wps->dev_pw_id != DEV_PW_P2PS_DEFAULT &&
2582 358 : wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2583 358 : wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2584 283 : wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
2585 : #ifdef CONFIG_WPS_NFC
2586 187 : wps->dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER &&
2587 : #endif /* CONFIG_WPS_NFC */
2588 166 : (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2589 83 : !wps->wps->registrar->pbc)) {
2590 2 : wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2591 2 : wps->dev_pw_id);
2592 2 : wps->state = SEND_M2D;
2593 2 : return WPS_CONTINUE;
2594 : }
2595 :
2596 : #ifdef CONFIG_WPS_NFC
2597 844 : if (wps->dev_pw_id >= 0x10 ||
2598 415 : wps->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
2599 : struct wps_nfc_pw_token *token;
2600 : const u8 *addr[1];
2601 : u8 hash[WPS_HASH_LEN];
2602 :
2603 70 : wpa_printf(MSG_DEBUG, "WPS: Searching for NFC token match for id=%d (ctx %p registrar %p)",
2604 70 : wps->dev_pw_id, wps->wps, wps->wps->registrar);
2605 70 : token = wps_get_nfc_pw_token(
2606 70 : &wps->wps->registrar->nfc_pw_tokens, wps->dev_pw_id);
2607 60 : if (token && token->peer_pk_hash_known) {
2608 : size_t len;
2609 :
2610 27 : wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2611 : "Password Token");
2612 27 : dl_list_del(&token->list);
2613 27 : wps->nfc_pw_token = token;
2614 :
2615 27 : addr[0] = attr->public_key;
2616 27 : len = attr->public_key_len;
2617 27 : sha256_vector(1, addr, &len, hash);
2618 27 : if (os_memcmp_const(hash,
2619 27 : wps->nfc_pw_token->pubkey_hash,
2620 : WPS_OOB_PUBKEY_HASH_LEN) != 0) {
2621 2 : wpa_printf(MSG_ERROR, "WPS: Public Key hash "
2622 : "mismatch");
2623 2 : wps->state = SEND_M2D;
2624 2 : wps->config_error =
2625 : WPS_CFG_PUBLIC_KEY_HASH_MISMATCH;
2626 2 : return WPS_CONTINUE;
2627 : }
2628 8 : } else if (token) {
2629 2 : wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2630 : "Password Token (no peer PK hash)");
2631 2 : wps->nfc_pw_token = token;
2632 9 : } else if (wps->dev_pw_id >= 0x10 &&
2633 5 : wps->wps->ap_nfc_dev_pw_id == wps->dev_pw_id &&
2634 2 : wps->wps->ap_nfc_dev_pw) {
2635 2 : wpa_printf(MSG_DEBUG, "WPS: Found match with own NFC Password Token");
2636 : }
2637 : }
2638 : #endif /* CONFIG_WPS_NFC */
2639 :
2640 427 : if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2641 157 : if ((wps->wps->registrar->force_pbc_overlap ||
2642 76 : wps_registrar_pbc_overlap(wps->wps->registrar,
2643 152 : wps->mac_addr_e, wps->uuid_e) ||
2644 82 : !wps_registrar_p2p_dev_addr_match(wps)) &&
2645 6 : !wps_registrar_skip_overlap(wps)) {
2646 5 : wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2647 : "negotiation");
2648 5 : wps->state = SEND_M2D;
2649 5 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2650 5 : wps_pbc_overlap_event(wps->wps);
2651 5 : wps_fail_event(wps->wps, WPS_M1,
2652 : WPS_CFG_MULTIPLE_PBC_DETECTED,
2653 5 : WPS_EI_NO_ERROR, wps->mac_addr_e);
2654 5 : wps->wps->registrar->force_pbc_overlap = 1;
2655 5 : return WPS_CONTINUE;
2656 : }
2657 76 : wps_registrar_add_pbc_session(wps->wps->registrar,
2658 76 : wps->mac_addr_e, wps->uuid_e);
2659 76 : wps->pbc = 1;
2660 : }
2661 :
2662 : #ifdef WPS_WORKAROUNDS
2663 : /*
2664 : * It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
2665 : * passphrase format. To avoid interop issues, force PSK format to be
2666 : * used.
2667 : */
2668 586 : if (!wps->use_psk_key &&
2669 328 : wps->peer_dev.manufacturer &&
2670 165 : os_strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
2671 2 : wps->peer_dev.model_name &&
2672 1 : os_strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
2673 1 : wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
2674 : "PSK format");
2675 1 : wps->use_psk_key = 1;
2676 : }
2677 : #endif /* WPS_WORKAROUNDS */
2678 :
2679 422 : wps->state = SEND_M2;
2680 422 : return WPS_CONTINUE;
2681 : }
2682 :
2683 :
2684 328 : static enum wps_process_res wps_process_m3(struct wps_data *wps,
2685 : const struct wpabuf *msg,
2686 : struct wps_parse_attr *attr)
2687 : {
2688 328 : wpa_printf(MSG_DEBUG, "WPS: Received M3");
2689 :
2690 328 : if (wps->state != RECV_M3) {
2691 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2692 1 : "receiving M3", wps->state);
2693 1 : wps->state = SEND_WSC_NACK;
2694 1 : return WPS_CONTINUE;
2695 : }
2696 :
2697 328 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2698 1 : !wps_registrar_skip_overlap(wps)) {
2699 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2700 : "session overlap");
2701 0 : wps->state = SEND_WSC_NACK;
2702 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2703 0 : return WPS_CONTINUE;
2704 : }
2705 :
2706 654 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2707 653 : wps_process_authenticator(wps, attr->authenticator, msg) ||
2708 651 : wps_process_e_hash1(wps, attr->e_hash1) ||
2709 325 : wps_process_e_hash2(wps, attr->e_hash2)) {
2710 3 : wps->state = SEND_WSC_NACK;
2711 3 : return WPS_CONTINUE;
2712 : }
2713 :
2714 324 : wps->state = SEND_M4;
2715 324 : return WPS_CONTINUE;
2716 : }
2717 :
2718 :
2719 307 : static enum wps_process_res wps_process_m5(struct wps_data *wps,
2720 : const struct wpabuf *msg,
2721 : struct wps_parse_attr *attr)
2722 : {
2723 : struct wpabuf *decrypted;
2724 : struct wps_parse_attr eattr;
2725 :
2726 307 : wpa_printf(MSG_DEBUG, "WPS: Received M5");
2727 :
2728 307 : if (wps->state != RECV_M5) {
2729 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2730 1 : "receiving M5", wps->state);
2731 1 : wps->state = SEND_WSC_NACK;
2732 1 : return WPS_CONTINUE;
2733 : }
2734 :
2735 307 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2736 1 : !wps_registrar_skip_overlap(wps)) {
2737 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2738 : "session overlap");
2739 0 : wps->state = SEND_WSC_NACK;
2740 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2741 0 : return WPS_CONTINUE;
2742 : }
2743 :
2744 612 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2745 306 : wps_process_authenticator(wps, attr->authenticator, msg)) {
2746 1 : wps->state = SEND_WSC_NACK;
2747 1 : return WPS_CONTINUE;
2748 : }
2749 :
2750 305 : decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2751 305 : attr->encr_settings_len);
2752 305 : if (decrypted == NULL) {
2753 1 : wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2754 : "Settings attribute");
2755 1 : wps->state = SEND_WSC_NACK;
2756 1 : return WPS_CONTINUE;
2757 : }
2758 :
2759 304 : if (wps_validate_m5_encr(decrypted, attr->version2 != NULL) < 0) {
2760 0 : wpabuf_free(decrypted);
2761 0 : wps->state = SEND_WSC_NACK;
2762 0 : return WPS_CONTINUE;
2763 : }
2764 :
2765 304 : wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2766 : "attribute");
2767 608 : if (wps_parse_msg(decrypted, &eattr) < 0 ||
2768 608 : wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2769 304 : wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2770 2 : wpabuf_free(decrypted);
2771 2 : wps->state = SEND_WSC_NACK;
2772 2 : return WPS_CONTINUE;
2773 : }
2774 302 : wpabuf_free(decrypted);
2775 :
2776 302 : wps->state = SEND_M6;
2777 302 : return WPS_CONTINUE;
2778 : }
2779 :
2780 :
2781 37 : static void wps_sta_cred_cb(struct wps_data *wps)
2782 : {
2783 : /*
2784 : * Update credential to only include a single authentication and
2785 : * encryption type in case the AP configuration includes more than one
2786 : * option.
2787 : */
2788 37 : if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2789 34 : wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2790 3 : else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2791 1 : wps->cred.auth_type = WPS_AUTH_WPAPSK;
2792 37 : if (wps->cred.encr_type & WPS_ENCR_AES)
2793 34 : wps->cred.encr_type = WPS_ENCR_AES;
2794 3 : else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2795 1 : wps->cred.encr_type = WPS_ENCR_TKIP;
2796 37 : wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2797 : "AP configuration");
2798 37 : if (wps->wps->cred_cb)
2799 37 : wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2800 37 : }
2801 :
2802 :
2803 9 : static void wps_cred_update(struct wps_credential *dst,
2804 : struct wps_credential *src)
2805 : {
2806 9 : os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2807 9 : dst->ssid_len = src->ssid_len;
2808 9 : dst->auth_type = src->auth_type;
2809 9 : dst->encr_type = src->encr_type;
2810 9 : dst->key_idx = src->key_idx;
2811 9 : os_memcpy(dst->key, src->key, sizeof(dst->key));
2812 9 : dst->key_len = src->key_len;
2813 9 : }
2814 :
2815 :
2816 288 : static int wps_process_ap_settings_r(struct wps_data *wps,
2817 : struct wps_parse_attr *attr)
2818 : {
2819 : struct wpabuf *msg;
2820 :
2821 288 : if (wps->wps->ap || wps->er)
2822 240 : return 0;
2823 :
2824 : /* AP Settings Attributes in M7 when Enrollee is an AP */
2825 48 : if (wps_process_ap_settings(attr, &wps->cred) < 0)
2826 0 : return -1;
2827 :
2828 48 : wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2829 :
2830 48 : if (wps->new_ap_settings) {
2831 9 : wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2832 : "new settings");
2833 9 : wps_cred_update(&wps->cred, wps->new_ap_settings);
2834 9 : return 0;
2835 : } else {
2836 : /*
2837 : * Use the AP PIN only to receive the current AP settings, not
2838 : * to reconfigure the AP.
2839 : */
2840 :
2841 : /*
2842 : * Clear selected registrar here since we do not get to
2843 : * WSC_Done in this protocol run.
2844 : */
2845 39 : wps_registrar_pin_completed(wps->wps->registrar);
2846 :
2847 39 : msg = wps_build_ap_cred(wps);
2848 39 : if (msg == NULL)
2849 0 : return -1;
2850 39 : wps->cred.cred_attr = wpabuf_head(msg);
2851 39 : wps->cred.cred_attr_len = wpabuf_len(msg);
2852 :
2853 39 : if (wps->ap_settings_cb) {
2854 18 : wps->ap_settings_cb(wps->ap_settings_cb_ctx,
2855 9 : &wps->cred);
2856 9 : wpabuf_free(msg);
2857 9 : return 1;
2858 : }
2859 30 : wps_sta_cred_cb(wps);
2860 :
2861 30 : wps->cred.cred_attr = NULL;
2862 30 : wps->cred.cred_attr_len = 0;
2863 30 : wpabuf_free(msg);
2864 :
2865 30 : return 1;
2866 : }
2867 : }
2868 :
2869 :
2870 293 : static enum wps_process_res wps_process_m7(struct wps_data *wps,
2871 : const struct wpabuf *msg,
2872 : struct wps_parse_attr *attr)
2873 : {
2874 : struct wpabuf *decrypted;
2875 : struct wps_parse_attr eattr;
2876 :
2877 293 : wpa_printf(MSG_DEBUG, "WPS: Received M7");
2878 :
2879 293 : if (wps->state != RECV_M7) {
2880 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2881 1 : "receiving M7", wps->state);
2882 1 : wps->state = SEND_WSC_NACK;
2883 1 : return WPS_CONTINUE;
2884 : }
2885 :
2886 293 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2887 1 : !wps_registrar_skip_overlap(wps)) {
2888 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2889 : "session overlap");
2890 0 : wps->state = SEND_WSC_NACK;
2891 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2892 0 : return WPS_CONTINUE;
2893 : }
2894 :
2895 584 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2896 292 : wps_process_authenticator(wps, attr->authenticator, msg)) {
2897 1 : wps->state = SEND_WSC_NACK;
2898 1 : return WPS_CONTINUE;
2899 : }
2900 :
2901 291 : decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2902 291 : attr->encr_settings_len);
2903 291 : if (decrypted == NULL) {
2904 1 : wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt Encrypted "
2905 : "Settings attribute");
2906 1 : wps->state = SEND_WSC_NACK;
2907 1 : return WPS_CONTINUE;
2908 : }
2909 :
2910 290 : if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er,
2911 290 : attr->version2 != NULL) < 0) {
2912 0 : wpabuf_free(decrypted);
2913 0 : wps->state = SEND_WSC_NACK;
2914 0 : return WPS_CONTINUE;
2915 : }
2916 :
2917 290 : wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2918 : "attribute");
2919 580 : if (wps_parse_msg(decrypted, &eattr) < 0 ||
2920 580 : wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2921 578 : wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2922 288 : wps_process_ap_settings_r(wps, &eattr)) {
2923 41 : wpabuf_free(decrypted);
2924 41 : wps->state = SEND_WSC_NACK;
2925 41 : return WPS_CONTINUE;
2926 : }
2927 :
2928 249 : wpabuf_free(decrypted);
2929 :
2930 249 : wps->state = SEND_M8;
2931 249 : return WPS_CONTINUE;
2932 : }
2933 :
2934 :
2935 1390 : static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2936 : const struct wpabuf *msg)
2937 : {
2938 : struct wps_parse_attr attr;
2939 1390 : enum wps_process_res ret = WPS_CONTINUE;
2940 :
2941 1390 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2942 :
2943 1390 : if (wps_parse_msg(msg, &attr) < 0)
2944 1 : return WPS_FAILURE;
2945 :
2946 1389 : if (attr.msg_type == NULL) {
2947 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2948 1 : wps->state = SEND_WSC_NACK;
2949 1 : return WPS_CONTINUE;
2950 : }
2951 :
2952 2318 : if (*attr.msg_type != WPS_M1 &&
2953 1860 : (attr.registrar_nonce == NULL ||
2954 930 : os_memcmp(wps->nonce_r, attr.registrar_nonce,
2955 : WPS_NONCE_LEN) != 0)) {
2956 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2957 1 : return WPS_FAILURE;
2958 : }
2959 :
2960 1387 : switch (*attr.msg_type) {
2961 : case WPS_M1:
2962 458 : if (wps_validate_m1(msg) < 0)
2963 0 : return WPS_FAILURE;
2964 : #ifdef CONFIG_WPS_UPNP
2965 458 : if (wps->wps->wps_upnp && attr.mac_addr) {
2966 : /* Remove old pending messages when starting new run */
2967 13 : wps_free_pending_msgs(wps->wps->upnp_msgs);
2968 13 : wps->wps->upnp_msgs = NULL;
2969 :
2970 26 : upnp_wps_device_send_wlan_event(
2971 13 : wps->wps->wps_upnp, attr.mac_addr,
2972 : UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
2973 : }
2974 : #endif /* CONFIG_WPS_UPNP */
2975 458 : ret = wps_process_m1(wps, &attr);
2976 458 : break;
2977 : case WPS_M3:
2978 328 : if (wps_validate_m3(msg) < 0)
2979 0 : return WPS_FAILURE;
2980 328 : ret = wps_process_m3(wps, msg, &attr);
2981 328 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2982 4 : wps_fail_event(wps->wps, WPS_M3, wps->config_error,
2983 4 : wps->error_indication, wps->mac_addr_e);
2984 328 : break;
2985 : case WPS_M5:
2986 307 : if (wps_validate_m5(msg) < 0)
2987 0 : return WPS_FAILURE;
2988 307 : ret = wps_process_m5(wps, msg, &attr);
2989 307 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2990 5 : wps_fail_event(wps->wps, WPS_M5, wps->config_error,
2991 5 : wps->error_indication, wps->mac_addr_e);
2992 307 : break;
2993 : case WPS_M7:
2994 293 : if (wps_validate_m7(msg) < 0)
2995 0 : return WPS_FAILURE;
2996 293 : ret = wps_process_m7(wps, msg, &attr);
2997 293 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2998 44 : wps_fail_event(wps->wps, WPS_M7, wps->config_error,
2999 44 : wps->error_indication, wps->mac_addr_e);
3000 293 : break;
3001 : default:
3002 1 : wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
3003 1 : *attr.msg_type);
3004 1 : return WPS_FAILURE;
3005 : }
3006 :
3007 1386 : if (ret == WPS_CONTINUE) {
3008 : /* Save a copy of the last message for Authenticator derivation
3009 : */
3010 1359 : wpabuf_free(wps->last_msg);
3011 1359 : wps->last_msg = wpabuf_dup(msg);
3012 : }
3013 :
3014 1386 : return ret;
3015 : }
3016 :
3017 :
3018 46 : static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
3019 : const struct wpabuf *msg)
3020 : {
3021 : struct wps_parse_attr attr;
3022 :
3023 46 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
3024 :
3025 46 : if (wps_parse_msg(msg, &attr) < 0)
3026 1 : return WPS_FAILURE;
3027 :
3028 45 : if (attr.msg_type == NULL) {
3029 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3030 1 : return WPS_FAILURE;
3031 : }
3032 :
3033 44 : if (*attr.msg_type != WPS_WSC_ACK) {
3034 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3035 1 : *attr.msg_type);
3036 1 : return WPS_FAILURE;
3037 : }
3038 :
3039 : #ifdef CONFIG_WPS_UPNP
3040 56 : if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
3041 13 : upnp_wps_subscribers(wps->wps->wps_upnp)) {
3042 13 : if (wps->wps->upnp_msgs)
3043 12 : return WPS_CONTINUE;
3044 1 : wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3045 : "external Registrar");
3046 1 : return WPS_PENDING;
3047 : }
3048 : #endif /* CONFIG_WPS_UPNP */
3049 :
3050 59 : if (attr.registrar_nonce == NULL ||
3051 29 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3052 : {
3053 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3054 1 : return WPS_FAILURE;
3055 : }
3056 :
3057 58 : if (attr.enrollee_nonce == NULL ||
3058 29 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3059 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3060 1 : return WPS_FAILURE;
3061 : }
3062 :
3063 28 : if (wps->state == RECV_M2D_ACK) {
3064 : #ifdef CONFIG_WPS_UPNP
3065 39 : if (wps->wps->wps_upnp &&
3066 12 : upnp_wps_subscribers(wps->wps->wps_upnp)) {
3067 12 : if (wps->wps->upnp_msgs)
3068 0 : return WPS_CONTINUE;
3069 12 : if (wps->ext_reg == 0)
3070 12 : wps->ext_reg = 1;
3071 12 : wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3072 : "external Registrar");
3073 12 : return WPS_PENDING;
3074 : }
3075 : #endif /* CONFIG_WPS_UPNP */
3076 :
3077 15 : wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
3078 : "terminate negotiation");
3079 : }
3080 :
3081 16 : return WPS_FAILURE;
3082 : }
3083 :
3084 :
3085 61 : static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
3086 : const struct wpabuf *msg)
3087 : {
3088 : struct wps_parse_attr attr;
3089 : int old_state;
3090 : u16 config_error;
3091 :
3092 61 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
3093 :
3094 61 : old_state = wps->state;
3095 61 : wps->state = SEND_WSC_NACK;
3096 :
3097 61 : if (wps_parse_msg(msg, &attr) < 0)
3098 1 : return WPS_FAILURE;
3099 :
3100 60 : if (attr.msg_type == NULL) {
3101 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3102 1 : return WPS_FAILURE;
3103 : }
3104 :
3105 59 : if (*attr.msg_type != WPS_WSC_NACK) {
3106 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3107 1 : *attr.msg_type);
3108 1 : return WPS_FAILURE;
3109 : }
3110 :
3111 : #ifdef CONFIG_WPS_UPNP
3112 58 : if (wps->wps->wps_upnp && wps->ext_reg) {
3113 1 : wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3114 : "Registrar terminated by the Enrollee");
3115 1 : return WPS_FAILURE;
3116 : }
3117 : #endif /* CONFIG_WPS_UPNP */
3118 :
3119 113 : if (attr.registrar_nonce == NULL ||
3120 56 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3121 : {
3122 6 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3123 6 : return WPS_FAILURE;
3124 : }
3125 :
3126 102 : if (attr.enrollee_nonce == NULL ||
3127 51 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3128 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3129 1 : return WPS_FAILURE;
3130 : }
3131 :
3132 50 : if (attr.config_error == NULL) {
3133 1 : wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
3134 : "in WSC_NACK");
3135 1 : return WPS_FAILURE;
3136 : }
3137 :
3138 49 : config_error = WPA_GET_BE16(attr.config_error);
3139 49 : wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
3140 : "Configuration Error %d", config_error);
3141 :
3142 49 : switch (old_state) {
3143 : case RECV_M3:
3144 14 : wps_fail_event(wps->wps, WPS_M2, config_error,
3145 14 : wps->error_indication, wps->mac_addr_e);
3146 14 : break;
3147 : case RECV_M5:
3148 13 : wps_fail_event(wps->wps, WPS_M4, config_error,
3149 13 : wps->error_indication, wps->mac_addr_e);
3150 13 : break;
3151 : case RECV_M7:
3152 6 : wps_fail_event(wps->wps, WPS_M6, config_error,
3153 6 : wps->error_indication, wps->mac_addr_e);
3154 6 : break;
3155 : case RECV_DONE:
3156 5 : wps_fail_event(wps->wps, WPS_M8, config_error,
3157 5 : wps->error_indication, wps->mac_addr_e);
3158 5 : break;
3159 : default:
3160 11 : break;
3161 : }
3162 :
3163 49 : return WPS_FAILURE;
3164 : }
3165 :
3166 :
3167 264 : static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
3168 : const struct wpabuf *msg)
3169 : {
3170 : struct wps_parse_attr attr;
3171 :
3172 264 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
3173 :
3174 275 : if (wps->state != RECV_DONE &&
3175 21 : (!wps->wps->wps_upnp || !wps->ext_reg)) {
3176 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
3177 1 : "receiving WSC_Done", wps->state);
3178 1 : return WPS_FAILURE;
3179 : }
3180 :
3181 263 : if (wps_parse_msg(msg, &attr) < 0)
3182 1 : return WPS_FAILURE;
3183 :
3184 262 : if (attr.msg_type == NULL) {
3185 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3186 1 : return WPS_FAILURE;
3187 : }
3188 :
3189 261 : if (*attr.msg_type != WPS_WSC_DONE) {
3190 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3191 1 : *attr.msg_type);
3192 1 : return WPS_FAILURE;
3193 : }
3194 :
3195 : #ifdef CONFIG_WPS_UPNP
3196 260 : if (wps->wps->wps_upnp && wps->ext_reg) {
3197 10 : wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3198 : "Registrar completed successfully");
3199 10 : wps_device_store(wps->wps->registrar, &wps->peer_dev,
3200 10 : wps->uuid_e);
3201 10 : return WPS_DONE;
3202 : }
3203 : #endif /* CONFIG_WPS_UPNP */
3204 :
3205 499 : if (attr.registrar_nonce == NULL ||
3206 249 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3207 : {
3208 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3209 1 : return WPS_FAILURE;
3210 : }
3211 :
3212 497 : if (attr.enrollee_nonce == NULL ||
3213 248 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3214 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3215 1 : return WPS_FAILURE;
3216 : }
3217 :
3218 248 : wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
3219 248 : wps_device_store(wps->wps->registrar, &wps->peer_dev,
3220 248 : wps->uuid_e);
3221 :
3222 254 : if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
3223 12 : wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
3224 : struct wps_credential cred;
3225 :
3226 6 : wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
3227 : "on first Enrollee connection");
3228 :
3229 6 : os_memset(&cred, 0, sizeof(cred));
3230 6 : os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
3231 6 : cred.ssid_len = wps->wps->ssid_len;
3232 6 : if (wps->wps->rf_band_cb(wps->wps->cb_ctx) == WPS_RF_60GHZ) {
3233 0 : cred.auth_type = WPS_AUTH_WPA2PSK;
3234 0 : cred.encr_type = WPS_ENCR_AES;
3235 : } else {
3236 6 : cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
3237 6 : cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
3238 : }
3239 6 : os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
3240 6 : cred.key_len = wps->new_psk_len;
3241 :
3242 6 : wps->wps->wps_state = WPS_STATE_CONFIGURED;
3243 12 : wpa_hexdump_ascii_key(MSG_DEBUG,
3244 : "WPS: Generated random passphrase",
3245 6 : wps->new_psk, wps->new_psk_len);
3246 6 : if (wps->wps->cred_cb)
3247 6 : wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
3248 :
3249 6 : os_free(wps->new_psk);
3250 6 : wps->new_psk = NULL;
3251 : }
3252 :
3253 248 : if (!wps->wps->ap && !wps->er)
3254 7 : wps_sta_cred_cb(wps);
3255 :
3256 248 : if (wps->new_psk) {
3257 24 : if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
3258 12 : wps->p2p_dev_addr, wps->new_psk,
3259 : wps->new_psk_len)) {
3260 2 : wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
3261 : "new PSK");
3262 : }
3263 12 : os_free(wps->new_psk);
3264 12 : wps->new_psk = NULL;
3265 : }
3266 :
3267 496 : wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e,
3268 248 : wps->dev_password, wps->dev_password_len);
3269 :
3270 248 : if (wps->pbc) {
3271 51 : wps_registrar_remove_pbc_session(wps->wps->registrar,
3272 51 : wps->uuid_e,
3273 51 : wps->p2p_dev_addr);
3274 51 : wps_registrar_pbc_completed(wps->wps->registrar);
3275 : #ifdef WPS_WORKAROUNDS
3276 51 : os_get_reltime(&wps->wps->registrar->pbc_ignore_start);
3277 : #endif /* WPS_WORKAROUNDS */
3278 51 : os_memcpy(wps->wps->registrar->pbc_ignore_uuid, wps->uuid_e,
3279 : WPS_UUID_LEN);
3280 : } else {
3281 197 : wps_registrar_pin_completed(wps->wps->registrar);
3282 : }
3283 : /* TODO: maintain AuthorizedMACs somewhere separately for each ER and
3284 : * merge them into APs own list.. */
3285 :
3286 248 : wps_success_event(wps->wps, wps->mac_addr_e);
3287 :
3288 248 : return WPS_DONE;
3289 : }
3290 :
3291 :
3292 1815 : enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
3293 : enum wsc_op_code op_code,
3294 : const struct wpabuf *msg)
3295 : {
3296 : enum wps_process_res ret;
3297 :
3298 1815 : wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
3299 : "op_code=%d)",
3300 : (unsigned long) wpabuf_len(msg), op_code);
3301 :
3302 : #ifdef CONFIG_WPS_UPNP
3303 1815 : if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
3304 : struct wps_parse_attr attr;
3305 18 : if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
3306 9 : *attr.msg_type == WPS_M3)
3307 9 : wps->ext_reg = 2; /* past M2/M2D phase */
3308 : }
3309 1815 : if (wps->ext_reg > 1)
3310 63 : wps_registrar_free_pending_m2(wps->wps);
3311 1893 : if (wps->wps->wps_upnp && wps->ext_reg &&
3312 117 : wps->wps->upnp_msgs == NULL &&
3313 12 : (op_code == WSC_MSG || op_code == WSC_Done || op_code == WSC_NACK))
3314 11 : {
3315 : struct wps_parse_attr attr;
3316 : int type;
3317 38 : if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
3318 0 : type = -1;
3319 : else
3320 38 : type = *attr.msg_type;
3321 38 : wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
3322 : " to external Registrar for processing", type);
3323 38 : upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
3324 38 : wps->mac_addr_e,
3325 : UPNP_WPS_WLANEVENT_TYPE_EAP,
3326 : msg);
3327 38 : if (op_code == WSC_MSG)
3328 27 : return WPS_PENDING;
3329 1777 : } else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
3330 27 : wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
3331 : "external Registrar");
3332 27 : return WPS_CONTINUE;
3333 : }
3334 : #endif /* CONFIG_WPS_UPNP */
3335 :
3336 1761 : switch (op_code) {
3337 : case WSC_MSG:
3338 1390 : return wps_process_wsc_msg(wps, msg);
3339 : case WSC_ACK:
3340 46 : if (wps_validate_wsc_ack(msg) < 0)
3341 0 : return WPS_FAILURE;
3342 46 : return wps_process_wsc_ack(wps, msg);
3343 : case WSC_NACK:
3344 61 : if (wps_validate_wsc_nack(msg) < 0)
3345 0 : return WPS_FAILURE;
3346 61 : return wps_process_wsc_nack(wps, msg);
3347 : case WSC_Done:
3348 264 : if (wps_validate_wsc_done(msg) < 0)
3349 0 : return WPS_FAILURE;
3350 264 : ret = wps_process_wsc_done(wps, msg);
3351 264 : if (ret == WPS_FAILURE) {
3352 6 : wps->state = SEND_WSC_NACK;
3353 12 : wps_fail_event(wps->wps, WPS_WSC_DONE,
3354 6 : wps->config_error,
3355 6 : wps->error_indication, wps->mac_addr_e);
3356 : }
3357 264 : return ret;
3358 : default:
3359 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
3360 0 : return WPS_FAILURE;
3361 : }
3362 : }
3363 :
3364 :
3365 32 : int wps_registrar_update_ie(struct wps_registrar *reg)
3366 : {
3367 32 : return wps_set_ie(reg);
3368 : }
3369 :
3370 :
3371 7 : static void wps_registrar_set_selected_timeout(void *eloop_ctx,
3372 : void *timeout_ctx)
3373 : {
3374 7 : struct wps_registrar *reg = eloop_ctx;
3375 :
3376 7 : wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
3377 : "unselect internal Registrar");
3378 7 : reg->selected_registrar = 0;
3379 7 : reg->pbc = 0;
3380 7 : wps_registrar_selected_registrar_changed(reg, 0);
3381 7 : }
3382 :
3383 :
3384 : #ifdef CONFIG_WPS_UPNP
3385 22 : static void wps_registrar_sel_reg_add(struct wps_registrar *reg,
3386 : struct subscription *s)
3387 : {
3388 : int i, j;
3389 44 : wpa_printf(MSG_DEBUG, "WPS: External Registrar selected (dev_pw_id=%d "
3390 : "config_methods=0x%x)",
3391 44 : s->dev_password_id, s->config_methods);
3392 22 : reg->sel_reg_union = 1;
3393 22 : if (reg->sel_reg_dev_password_id_override != DEV_PW_PUSHBUTTON)
3394 22 : reg->sel_reg_dev_password_id_override = s->dev_password_id;
3395 22 : if (reg->sel_reg_config_methods_override == -1)
3396 22 : reg->sel_reg_config_methods_override = 0;
3397 22 : reg->sel_reg_config_methods_override |= s->config_methods;
3398 22 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
3399 22 : if (is_zero_ether_addr(reg->authorized_macs_union[i]))
3400 22 : break;
3401 70 : for (j = 0; i < WPS_MAX_AUTHORIZED_MACS && j < WPS_MAX_AUTHORIZED_MACS;
3402 26 : j++) {
3403 47 : if (is_zero_ether_addr(s->authorized_macs[j]))
3404 21 : break;
3405 156 : wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC into union: "
3406 156 : MACSTR, MAC2STR(s->authorized_macs[j]));
3407 26 : os_memcpy(reg->authorized_macs_union[i],
3408 : s->authorized_macs[j], ETH_ALEN);
3409 26 : i++;
3410 : }
3411 22 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union",
3412 22 : (u8 *) reg->authorized_macs_union,
3413 : sizeof(reg->authorized_macs_union));
3414 22 : }
3415 : #endif /* CONFIG_WPS_UPNP */
3416 :
3417 :
3418 1129 : static void wps_registrar_sel_reg_union(struct wps_registrar *reg)
3419 : {
3420 : #ifdef CONFIG_WPS_UPNP
3421 : struct subscription *s;
3422 :
3423 1129 : if (reg->wps->wps_upnp == NULL)
3424 2175 : return;
3425 :
3426 159 : dl_list_for_each(s, ®->wps->wps_upnp->subscriptions,
3427 : struct subscription, list) {
3428 : struct subscr_addr *sa;
3429 76 : sa = dl_list_first(&s->addr_list, struct subscr_addr, list);
3430 76 : if (sa) {
3431 76 : wpa_printf(MSG_DEBUG, "WPS: External Registrar %s:%d",
3432 : inet_ntoa(sa->saddr.sin_addr),
3433 76 : ntohs(sa->saddr.sin_port));
3434 : }
3435 76 : if (s->selected_registrar)
3436 22 : wps_registrar_sel_reg_add(reg, s);
3437 : else
3438 54 : wpa_printf(MSG_DEBUG, "WPS: External Registrar not "
3439 : "selected");
3440 : }
3441 : #endif /* CONFIG_WPS_UPNP */
3442 : }
3443 :
3444 :
3445 : /**
3446 : * wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
3447 : * @reg: Registrar data from wps_registrar_init()
3448 : *
3449 : * This function is called when selected registrar state changes, e.g., when an
3450 : * AP receives a SetSelectedRegistrar UPnP message.
3451 : */
3452 1129 : void wps_registrar_selected_registrar_changed(struct wps_registrar *reg,
3453 : u16 dev_pw_id)
3454 : {
3455 1129 : wpa_printf(MSG_DEBUG, "WPS: Selected registrar information changed");
3456 :
3457 1129 : reg->sel_reg_union = reg->selected_registrar;
3458 1129 : reg->sel_reg_dev_password_id_override = -1;
3459 1129 : reg->sel_reg_config_methods_override = -1;
3460 1129 : os_memcpy(reg->authorized_macs_union, reg->authorized_macs,
3461 : WPS_MAX_AUTHORIZED_MACS * ETH_ALEN);
3462 1129 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union (start with own)",
3463 1129 : (u8 *) reg->authorized_macs_union,
3464 : sizeof(reg->authorized_macs_union));
3465 1129 : if (reg->selected_registrar) {
3466 : u16 methods;
3467 :
3468 716 : methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
3469 716 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
3470 : WPS_CONFIG_PHY_PUSHBUTTON);
3471 716 : if (reg->pbc) {
3472 117 : reg->sel_reg_dev_password_id_override =
3473 : DEV_PW_PUSHBUTTON;
3474 117 : wps_set_pushbutton(&methods, reg->wps->config_methods);
3475 599 : } else if (dev_pw_id)
3476 29 : reg->sel_reg_dev_password_id_override = dev_pw_id;
3477 716 : wpa_printf(MSG_DEBUG, "WPS: Internal Registrar selected "
3478 : "(pbc=%d)", reg->pbc);
3479 716 : reg->sel_reg_config_methods_override = methods;
3480 : } else
3481 413 : wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
3482 :
3483 1129 : wps_registrar_sel_reg_union(reg);
3484 :
3485 1129 : wps_set_ie(reg);
3486 1129 : wps_cb_set_sel_reg(reg);
3487 1129 : }
3488 :
3489 :
3490 7 : int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
3491 : char *buf, size_t buflen)
3492 : {
3493 : struct wps_registrar_device *d;
3494 7 : int len = 0, ret;
3495 : char uuid[40];
3496 : char devtype[WPS_DEV_TYPE_BUFSIZE];
3497 :
3498 7 : d = wps_device_get(reg, addr);
3499 7 : if (d == NULL)
3500 3 : return 0;
3501 4 : if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
3502 0 : return 0;
3503 :
3504 24 : ret = os_snprintf(buf + len, buflen - len,
3505 : "wpsUuid=%s\n"
3506 : "wpsPrimaryDeviceType=%s\n"
3507 : "wpsDeviceName=%s\n"
3508 : "wpsManufacturer=%s\n"
3509 : "wpsModelName=%s\n"
3510 : "wpsModelNumber=%s\n"
3511 : "wpsSerialNumber=%s\n",
3512 : uuid,
3513 4 : wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
3514 : sizeof(devtype)),
3515 4 : d->dev.device_name ? d->dev.device_name : "",
3516 4 : d->dev.manufacturer ? d->dev.manufacturer : "",
3517 4 : d->dev.model_name ? d->dev.model_name : "",
3518 4 : d->dev.model_number ? d->dev.model_number : "",
3519 4 : d->dev.serial_number ? d->dev.serial_number : "");
3520 4 : if (os_snprintf_error(buflen - len, ret))
3521 0 : return len;
3522 4 : len += ret;
3523 :
3524 4 : return len;
3525 : }
3526 :
3527 :
3528 4 : int wps_registrar_config_ap(struct wps_registrar *reg,
3529 : struct wps_credential *cred)
3530 : {
3531 4 : wpa_printf(MSG_DEBUG, "WPS: encr_type=0x%x", cred->encr_type);
3532 4 : if (!(cred->encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP |
3533 : WPS_ENCR_AES))) {
3534 0 : if (cred->encr_type & WPS_ENCR_WEP) {
3535 0 : wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
3536 : "due to WEP configuration");
3537 0 : return -1;
3538 : }
3539 :
3540 0 : wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
3541 0 : "invalid encr_type 0x%x", cred->encr_type);
3542 0 : return -1;
3543 : }
3544 :
3545 4 : if ((cred->encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
3546 : WPS_ENCR_TKIP) {
3547 0 : wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
3548 : "TKIP+AES");
3549 0 : cred->encr_type |= WPS_ENCR_AES;
3550 : }
3551 :
3552 4 : if ((cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
3553 : WPS_AUTH_WPAPSK) {
3554 0 : wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
3555 : "WPAPSK+WPA2PSK");
3556 0 : cred->auth_type |= WPS_AUTH_WPA2PSK;
3557 : }
3558 :
3559 4 : if (reg->wps->cred_cb)
3560 4 : return reg->wps->cred_cb(reg->wps->cb_ctx, cred);
3561 :
3562 0 : return -1;
3563 : }
3564 :
3565 :
3566 : #ifdef CONFIG_WPS_NFC
3567 :
3568 29 : int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
3569 : const u8 *pubkey_hash, u16 pw_id,
3570 : const u8 *dev_pw, size_t dev_pw_len,
3571 : int pk_hash_provided_oob)
3572 : {
3573 : struct wps_nfc_pw_token *token;
3574 :
3575 29 : if (dev_pw_len > WPS_OOB_DEVICE_PASSWORD_LEN)
3576 0 : return -1;
3577 :
3578 29 : if (pw_id == DEV_PW_NFC_CONNECTION_HANDOVER &&
3579 18 : (pubkey_hash == NULL || !pk_hash_provided_oob)) {
3580 0 : wpa_printf(MSG_DEBUG, "WPS: Unexpected NFC Password Token "
3581 : "addition - missing public key hash");
3582 0 : return -1;
3583 : }
3584 :
3585 29 : wps_free_nfc_pw_tokens(®->nfc_pw_tokens, pw_id);
3586 :
3587 29 : token = os_zalloc(sizeof(*token));
3588 29 : if (token == NULL)
3589 0 : return -1;
3590 :
3591 29 : token->peer_pk_hash_known = pubkey_hash != NULL;
3592 29 : if (pubkey_hash)
3593 27 : os_memcpy(token->pubkey_hash, pubkey_hash,
3594 : WPS_OOB_PUBKEY_HASH_LEN);
3595 29 : token->pw_id = pw_id;
3596 29 : token->pk_hash_provided_oob = pk_hash_provided_oob;
3597 29 : if (dev_pw) {
3598 11 : wpa_snprintf_hex_uppercase((char *) token->dev_pw,
3599 : sizeof(token->dev_pw),
3600 : dev_pw, dev_pw_len);
3601 11 : token->dev_pw_len = dev_pw_len * 2;
3602 : }
3603 :
3604 29 : dl_list_add(®->nfc_pw_tokens, &token->list);
3605 :
3606 29 : reg->selected_registrar = 1;
3607 29 : reg->pbc = 0;
3608 29 : wps_registrar_add_authorized_mac(reg,
3609 : (u8 *) "\xff\xff\xff\xff\xff\xff");
3610 29 : wps_registrar_selected_registrar_changed(reg, pw_id);
3611 29 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
3612 29 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
3613 : wps_registrar_set_selected_timeout,
3614 : reg, NULL);
3615 :
3616 29 : wpa_printf(MSG_DEBUG, "WPS: Added NFC Device Password %u to Registrar",
3617 : pw_id);
3618 :
3619 29 : return 0;
3620 : }
3621 :
3622 :
3623 4 : int wps_registrar_add_nfc_password_token(struct wps_registrar *reg,
3624 : const u8 *oob_dev_pw,
3625 : size_t oob_dev_pw_len)
3626 : {
3627 : const u8 *pos, *hash, *dev_pw;
3628 : u16 id;
3629 : size_t dev_pw_len;
3630 :
3631 4 : if (oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2 ||
3632 : oob_dev_pw_len > WPS_OOB_PUBKEY_HASH_LEN + 2 +
3633 : WPS_OOB_DEVICE_PASSWORD_LEN)
3634 0 : return -1;
3635 :
3636 4 : hash = oob_dev_pw;
3637 4 : pos = oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN;
3638 4 : id = WPA_GET_BE16(pos);
3639 4 : dev_pw = pos + 2;
3640 4 : dev_pw_len = oob_dev_pw + oob_dev_pw_len - dev_pw;
3641 :
3642 4 : wpa_printf(MSG_DEBUG, "WPS: Add NFC Password Token for Password ID %u",
3643 : id);
3644 :
3645 4 : wpa_hexdump(MSG_DEBUG, "WPS: Public Key Hash",
3646 : hash, WPS_OOB_PUBKEY_HASH_LEN);
3647 4 : wpa_hexdump_key(MSG_DEBUG, "WPS: Device Password", dev_pw, dev_pw_len);
3648 :
3649 4 : return wps_registrar_add_nfc_pw_token(reg, hash, id, dev_pw,
3650 : dev_pw_len, 0);
3651 : }
3652 :
3653 :
3654 29 : void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
3655 : struct wps_nfc_pw_token *token)
3656 : {
3657 29 : wps_registrar_remove_authorized_mac(reg,
3658 : (u8 *) "\xff\xff\xff\xff\xff\xff");
3659 29 : wps_registrar_selected_registrar_changed(reg, 0);
3660 :
3661 : /*
3662 : * Free the NFC password token if it was used only for a single protocol
3663 : * run. The static handover case uses the same password token multiple
3664 : * times, so do not free that case here.
3665 : */
3666 29 : if (token->peer_pk_hash_known)
3667 27 : os_free(token);
3668 29 : }
3669 :
3670 : #endif /* CONFIG_WPS_NFC */
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