Line data Source code
1 : /*
2 : * Wi-Fi Protected Setup - Registrar
3 : * Copyright (c) 2008-2016, 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 7491 : static void wps_free_nfc_pw_tokens(struct dl_list *tokens, u16 pw_id)
50 : {
51 : struct wps_nfc_pw_token *token, *prev;
52 7493 : 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 7491 : }
58 :
59 :
60 36 : 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 36 : dl_list_for_each(token, tokens, struct wps_nfc_pw_token, list) {
65 30 : if (pw_id == token->pw_id)
66 30 : 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 :
92 398 : static void wps_free_pin(struct wps_uuid_pin *pin)
93 : {
94 398 : bin_clear_free(pin->pin, pin->pin_len);
95 398 : os_free(pin);
96 398 : }
97 :
98 :
99 398 : static void wps_remove_pin(struct wps_uuid_pin *pin)
100 : {
101 398 : dl_list_del(&pin->list);
102 398 : wps_free_pin(pin);
103 398 : }
104 :
105 :
106 7461 : static void wps_free_pins(struct dl_list *pins)
107 : {
108 : struct wps_uuid_pin *pin, *prev;
109 7562 : dl_list_for_each_safe(pin, prev, pins, struct wps_uuid_pin, list)
110 101 : wps_remove_pin(pin);
111 7461 : }
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 7461 : static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
123 : {
124 : struct wps_pbc_session *prev;
125 :
126 14987 : while (pbc) {
127 65 : prev = pbc;
128 65 : pbc = pbc->next;
129 65 : os_free(prev);
130 : }
131 7461 : }
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 :
202 552 : static void wps_registrar_add_authorized_mac(struct wps_registrar *reg,
203 : const u8 *addr)
204 : {
205 : int i;
206 3312 : wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC " MACSTR,
207 3312 : MAC2STR(addr));
208 3167 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
209 2644 : if (os_memcmp(reg->authorized_macs[i], addr, ETH_ALEN) == 0) {
210 29 : wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was "
211 : "already in the list");
212 581 : return; /* already in list */
213 : }
214 2615 : for (i = WPS_MAX_AUTHORIZED_MACS - 1; i > 0; i--)
215 2092 : os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i - 1],
216 : ETH_ALEN);
217 523 : os_memcpy(reg->authorized_macs[0], addr, ETH_ALEN);
218 523 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
219 523 : (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
220 : }
221 :
222 :
223 388 : static void wps_registrar_remove_authorized_mac(struct wps_registrar *reg,
224 : const u8 *addr)
225 : {
226 : int i;
227 2328 : wpa_printf(MSG_DEBUG, "WPS: Remove authorized MAC " MACSTR,
228 2328 : MAC2STR(addr));
229 398 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++) {
230 396 : if (os_memcmp(reg->authorized_macs, addr, ETH_ALEN) == 0)
231 386 : break;
232 : }
233 388 : if (i == WPS_MAX_AUTHORIZED_MACS) {
234 2 : wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was not in the "
235 : "list");
236 390 : return; /* not in the list */
237 : }
238 1930 : for (; i + 1 < WPS_MAX_AUTHORIZED_MACS; i++)
239 1544 : os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i + 1],
240 : ETH_ALEN);
241 386 : os_memset(reg->authorized_macs[WPS_MAX_AUTHORIZED_MACS - 1], 0,
242 : ETH_ALEN);
243 386 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
244 386 : (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
245 : }
246 :
247 :
248 7461 : static void wps_free_devices(struct wps_registrar_device *dev)
249 : {
250 : struct wps_registrar_device *prev;
251 :
252 15285 : while (dev) {
253 363 : prev = dev;
254 363 : dev = dev->next;
255 363 : wps_device_data_free(&prev->dev);
256 363 : os_free(prev);
257 : }
258 7461 : }
259 :
260 :
261 382 : static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
262 : const u8 *addr)
263 : {
264 : struct wps_registrar_device *dev;
265 :
266 450 : for (dev = reg->devices; dev; dev = dev->next) {
267 84 : if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
268 16 : return dev;
269 : }
270 366 : return NULL;
271 : }
272 :
273 :
274 375 : static void wps_device_clone_data(struct wps_device_data *dst,
275 : struct wps_device_data *src)
276 : {
277 375 : os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
278 375 : 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 :
284 375 : WPS_STRDUP(device_name);
285 375 : WPS_STRDUP(manufacturer);
286 375 : WPS_STRDUP(model_name);
287 375 : WPS_STRDUP(model_number);
288 375 : WPS_STRDUP(serial_number);
289 : #undef WPS_STRDUP
290 375 : }
291 :
292 :
293 375 : 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 :
298 375 : d = wps_device_get(reg, dev->mac_addr);
299 375 : if (d == NULL) {
300 363 : d = os_zalloc(sizeof(*d));
301 363 : if (d == NULL)
302 0 : return -1;
303 363 : d->next = reg->devices;
304 363 : reg->devices = d;
305 : }
306 :
307 375 : wps_device_clone_data(&d->dev, dev);
308 375 : os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
309 :
310 375 : return 0;
311 : }
312 :
313 :
314 226 : static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
315 : const u8 *addr, const u8 *uuid_e)
316 : {
317 226 : struct wps_pbc_session *pbc, *prev = NULL;
318 : struct os_reltime now;
319 :
320 226 : os_get_reltime(&now);
321 :
322 226 : pbc = reg->pbc_sessions;
323 457 : while (pbc) {
324 217 : if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
325 106 : os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
326 106 : if (prev)
327 0 : prev->next = pbc->next;
328 : else
329 106 : reg->pbc_sessions = pbc->next;
330 106 : break;
331 : }
332 5 : prev = pbc;
333 5 : pbc = pbc->next;
334 : }
335 :
336 226 : if (!pbc) {
337 120 : pbc = os_zalloc(sizeof(*pbc));
338 120 : if (pbc == NULL)
339 226 : return;
340 120 : os_memcpy(pbc->addr, addr, ETH_ALEN);
341 120 : if (uuid_e)
342 120 : os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
343 : }
344 :
345 226 : pbc->next = reg->pbc_sessions;
346 226 : reg->pbc_sessions = pbc;
347 226 : pbc->timestamp = now;
348 :
349 : /* remove entries that have timed out */
350 226 : prev = pbc;
351 226 : pbc = pbc->next;
352 :
353 458 : 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 54 : static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
367 : const u8 *uuid_e,
368 : const u8 *p2p_dev_addr)
369 : {
370 54 : struct wps_pbc_session *pbc, *prev = NULL, *tmp;
371 :
372 54 : pbc = reg->pbc_sessions;
373 163 : while (pbc) {
374 55 : 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 55 : if (prev)
379 0 : prev->next = pbc->next;
380 : else
381 55 : reg->pbc_sessions = pbc->next;
382 55 : tmp = pbc;
383 55 : pbc = pbc->next;
384 330 : wpa_printf(MSG_DEBUG, "WPS: Removing PBC session for "
385 330 : "addr=" MACSTR, MAC2STR(tmp->addr));
386 55 : wpa_hexdump(MSG_DEBUG, "WPS: Removed UUID-E",
387 55 : tmp->uuid_e, WPS_UUID_LEN);
388 55 : os_free(tmp);
389 55 : continue;
390 : }
391 0 : prev = pbc;
392 0 : pbc = pbc->next;
393 : }
394 54 : }
395 :
396 :
397 337 : int wps_registrar_pbc_overlap(struct wps_registrar *reg,
398 : const u8 *addr, const u8 *uuid_e)
399 : {
400 337 : int count = 0;
401 : struct wps_pbc_session *pbc;
402 337 : struct wps_pbc_session *first = NULL;
403 : struct os_reltime now;
404 :
405 337 : os_get_reltime(&now);
406 :
407 337 : wpa_printf(MSG_DEBUG, "WPS: Checking active PBC sessions for overlap");
408 :
409 337 : if (uuid_e) {
410 227 : wpa_printf(MSG_DEBUG, "WPS: Add one for the requested UUID");
411 227 : wpa_hexdump(MSG_DEBUG, "WPS: Requested UUID",
412 : uuid_e, WPS_UUID_LEN);
413 227 : count++;
414 : }
415 :
416 576 : for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
417 1434 : wpa_printf(MSG_DEBUG, "WPS: Consider PBC session with " MACSTR,
418 1434 : MAC2STR(pbc->addr));
419 239 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E",
420 239 : pbc->uuid_e, WPS_UUID_LEN);
421 239 : 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 : }
426 248 : 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 : }
431 464 : if (uuid_e == NULL ||
432 225 : os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN)) {
433 19 : wpa_printf(MSG_DEBUG, "WPS: New Enrollee");
434 19 : count++;
435 : }
436 239 : if (first == NULL)
437 230 : first = pbc;
438 : }
439 :
440 337 : wpa_printf(MSG_DEBUG, "WPS: %u active PBC session(s) found", count);
441 :
442 337 : return count > 1 ? 1 : 0;
443 : }
444 :
445 :
446 3688 : static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
447 : {
448 3688 : wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
449 3688 : wps->wps_state);
450 3688 : wpabuf_put_be16(msg, ATTR_WPS_STATE);
451 3688 : wpabuf_put_be16(msg, 1);
452 3688 : wpabuf_put_u8(msg, wps->wps_state);
453 3688 : 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 3688 : static int wps_build_ap_setup_locked(struct wps_context *wps,
483 : struct wpabuf *msg)
484 : {
485 3688 : 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 3688 : return 0;
492 : }
493 :
494 :
495 3688 : static int wps_build_selected_registrar(struct wps_registrar *reg,
496 : struct wpabuf *msg)
497 : {
498 3688 : if (!reg->sel_reg_union)
499 2238 : return 0;
500 1450 : wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
501 1450 : wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
502 1450 : wpabuf_put_be16(msg, 1);
503 1450 : wpabuf_put_u8(msg, 1);
504 1450 : return 0;
505 : }
506 :
507 :
508 3688 : static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
509 : struct wpabuf *msg)
510 : {
511 3688 : u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
512 3688 : if (!reg->sel_reg_union)
513 2238 : return 0;
514 1450 : if (reg->sel_reg_dev_password_id_override >= 0)
515 330 : id = reg->sel_reg_dev_password_id_override;
516 1450 : wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
517 1450 : wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
518 1450 : wpabuf_put_be16(msg, 2);
519 1450 : wpabuf_put_be16(msg, id);
520 1450 : return 0;
521 : }
522 :
523 :
524 1844 : static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
525 : struct wpabuf *msg)
526 : {
527 1844 : u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
528 1844 : if (!reg->sel_reg_union)
529 1119 : return 0;
530 725 : if (reg->sel_reg_dev_password_id_override >= 0)
531 165 : id = reg->sel_reg_dev_password_id_override;
532 725 : if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
533 719 : return 0;
534 6 : return wps_build_uuid_e(msg, reg->wps->uuid);
535 : }
536 :
537 :
538 366 : static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
539 : {
540 366 : *methods |= WPS_CONFIG_PUSHBUTTON;
541 366 : if ((conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON) ==
542 : WPS_CONFIG_VIRT_PUSHBUTTON)
543 0 : *methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
544 366 : if ((conf_methods & WPS_CONFIG_PHY_PUSHBUTTON) ==
545 : WPS_CONFIG_PHY_PUSHBUTTON)
546 0 : *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
547 366 : if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
548 366 : WPS_CONFIG_VIRT_PUSHBUTTON &&
549 366 : (*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 : */
556 366 : *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
557 : }
558 366 : }
559 :
560 :
561 3688 : static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
562 : struct wpabuf *msg)
563 : {
564 : u16 methods;
565 3688 : if (!reg->sel_reg_union)
566 2238 : return 0;
567 1450 : methods = reg->wps->config_methods;
568 1450 : methods &= ~WPS_CONFIG_PUSHBUTTON;
569 1450 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
570 : WPS_CONFIG_PHY_PUSHBUTTON);
571 1450 : if (reg->pbc)
572 236 : wps_set_pushbutton(&methods, reg->wps->config_methods);
573 1450 : if (reg->sel_reg_config_methods_override >= 0)
574 1450 : methods = reg->sel_reg_config_methods_override;
575 1450 : wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
576 : methods);
577 1450 : wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
578 1450 : wpabuf_put_be16(msg, 2);
579 1450 : wpabuf_put_be16(msg, methods);
580 1450 : return 0;
581 : }
582 :
583 :
584 1844 : 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 1844 : methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
593 1844 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
594 : WPS_CONFIG_PHY_PUSHBUTTON);
595 1844 : wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
596 1844 : wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
597 1844 : wpabuf_put_be16(msg, 2);
598 1844 : wpabuf_put_be16(msg, methods);
599 1844 : return 0;
600 : }
601 :
602 :
603 497 : static int wps_build_config_methods_r(struct wps_registrar *reg,
604 : struct wpabuf *msg)
605 : {
606 497 : return wps_build_config_methods(msg, reg->wps->config_methods);
607 : }
608 :
609 :
610 1901 : const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count)
611 : {
612 1901 : *count = 0;
613 :
614 4349 : while (*count < WPS_MAX_AUTHORIZED_MACS) {
615 2447 : if (is_zero_ether_addr(reg->authorized_macs_union[*count]))
616 1900 : break;
617 547 : (*count)++;
618 : }
619 :
620 1901 : 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 1402 : wps_registrar_init(struct wps_context *wps,
638 : const struct wps_registrar_config *cfg)
639 : {
640 1402 : struct wps_registrar *reg = os_zalloc(sizeof(*reg));
641 1402 : if (reg == NULL)
642 1 : return NULL;
643 :
644 1401 : dl_list_init(®->pins);
645 1401 : dl_list_init(®->nfc_pw_tokens);
646 1401 : reg->wps = wps;
647 1401 : reg->new_psk_cb = cfg->new_psk_cb;
648 1401 : reg->set_ie_cb = cfg->set_ie_cb;
649 1401 : reg->pin_needed_cb = cfg->pin_needed_cb;
650 1401 : reg->reg_success_cb = cfg->reg_success_cb;
651 1401 : reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
652 1401 : reg->enrollee_seen_cb = cfg->enrollee_seen_cb;
653 1401 : reg->cb_ctx = cfg->cb_ctx;
654 1401 : reg->skip_cred_build = cfg->skip_cred_build;
655 1401 : if (cfg->extra_cred) {
656 4 : reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
657 : cfg->extra_cred_len);
658 4 : if (reg->extra_cred == NULL) {
659 0 : os_free(reg);
660 0 : return NULL;
661 : }
662 : }
663 1401 : reg->disable_auto_conf = cfg->disable_auto_conf;
664 1401 : reg->sel_reg_dev_password_id_override = -1;
665 1401 : reg->sel_reg_config_methods_override = -1;
666 1401 : reg->static_wep_only = cfg->static_wep_only;
667 1401 : reg->dualband = cfg->dualband;
668 1401 : reg->force_per_enrollee_psk = cfg->force_per_enrollee_psk;
669 :
670 1401 : if (wps_set_ie(reg)) {
671 0 : wps_registrar_deinit(reg);
672 0 : return NULL;
673 : }
674 :
675 1401 : return reg;
676 : }
677 :
678 :
679 7461 : void wps_registrar_flush(struct wps_registrar *reg)
680 : {
681 7461 : if (reg == NULL)
682 7461 : return;
683 7461 : wps_free_pins(®->pins);
684 7461 : wps_free_nfc_pw_tokens(®->nfc_pw_tokens, 0);
685 7461 : wps_free_pbc_sessions(reg->pbc_sessions);
686 7461 : reg->pbc_sessions = NULL;
687 7461 : wps_free_devices(reg->devices);
688 7461 : reg->devices = NULL;
689 : #ifdef WPS_WORKAROUNDS
690 7461 : 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 1401 : void wps_registrar_deinit(struct wps_registrar *reg)
700 : {
701 1401 : if (reg == NULL)
702 1401 : return;
703 1401 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
704 1401 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
705 1401 : wps_registrar_flush(reg);
706 1401 : wpabuf_clear_free(reg->extra_cred);
707 1401 : os_free(reg);
708 : }
709 :
710 :
711 379 : static void wps_registrar_invalidate_unused(struct wps_registrar *reg)
712 : {
713 : struct wps_uuid_pin *pin;
714 :
715 399 : 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 : }
723 379 : }
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 : */
736 398 : 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 :
742 398 : p = os_zalloc(sizeof(*p));
743 398 : if (p == NULL)
744 0 : return -1;
745 398 : if (addr)
746 125 : os_memcpy(p->enrollee_addr, addr, ETH_ALEN);
747 398 : if (uuid == NULL)
748 379 : p->wildcard_uuid = 1;
749 : else
750 19 : os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
751 398 : p->pin = os_malloc(pin_len);
752 398 : if (p->pin == NULL) {
753 0 : os_free(p);
754 0 : return -1;
755 : }
756 398 : os_memcpy(p->pin, pin, pin_len);
757 398 : p->pin_len = pin_len;
758 :
759 398 : if (timeout) {
760 11 : p->flags |= PIN_EXPIRES;
761 11 : os_get_reltime(&p->expiration);
762 11 : p->expiration.sec += timeout;
763 : }
764 :
765 398 : if (p->wildcard_uuid)
766 379 : wps_registrar_invalidate_unused(reg);
767 :
768 398 : dl_list_add(®->pins, &p->list);
769 :
770 398 : wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
771 : timeout);
772 398 : wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
773 398 : wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
774 398 : reg->selected_registrar = 1;
775 398 : reg->pbc = 0;
776 398 : if (addr)
777 125 : wps_registrar_add_authorized_mac(reg, addr);
778 : else
779 273 : wps_registrar_add_authorized_mac(
780 : reg, (u8 *) "\xff\xff\xff\xff\xff\xff");
781 398 : wps_registrar_selected_registrar_changed(reg, 0);
782 398 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
783 398 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
784 : wps_registrar_set_selected_timeout,
785 : reg, NULL);
786 :
787 398 : return 0;
788 : }
789 :
790 :
791 297 : static void wps_registrar_remove_pin(struct wps_registrar *reg,
792 : struct wps_uuid_pin *pin)
793 : {
794 : u8 *addr;
795 297 : u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
796 :
797 297 : if (is_zero_ether_addr(pin->enrollee_addr))
798 177 : addr = bcast;
799 : else
800 120 : addr = pin->enrollee_addr;
801 297 : wps_registrar_remove_authorized_mac(reg, addr);
802 297 : wps_remove_pin(pin);
803 297 : wps_registrar_selected_registrar_changed(reg, 0);
804 297 : }
805 :
806 :
807 381 : static void wps_registrar_expire_pins(struct wps_registrar *reg)
808 : {
809 : struct wps_uuid_pin *pin, *prev;
810 : struct os_reltime now;
811 :
812 381 : os_get_reltime(&now);
813 770 : dl_list_for_each_safe(pin, prev, ®->pins, struct wps_uuid_pin, list)
814 : {
815 399 : 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 : }
822 381 : }
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 : */
862 368 : int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
863 : {
864 : struct wps_uuid_pin *pin, *prev;
865 :
866 369 : dl_list_for_each_safe(pin, prev, ®->pins, struct wps_uuid_pin, list)
867 : {
868 293 : if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
869 292 : wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
870 292 : pin->uuid, WPS_UUID_LEN);
871 292 : wps_registrar_remove_pin(reg, pin);
872 292 : return 0;
873 : }
874 : }
875 :
876 76 : return -1;
877 : }
878 :
879 :
880 381 : static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
881 : const u8 *uuid, size_t *pin_len)
882 : {
883 381 : struct wps_uuid_pin *pin, *found = NULL;
884 :
885 381 : wps_registrar_expire_pins(reg);
886 :
887 734 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
888 392 : 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 :
895 381 : if (!found) {
896 : /* Check for wildcard UUIDs since none of the UUID-specific
897 : * PINs matched */
898 362 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
899 332 : if (pin->wildcard_uuid == 1 ||
900 0 : pin->wildcard_uuid == 2) {
901 332 : wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
902 : "PIN. Assigned it for this UUID-E");
903 332 : pin->wildcard_uuid++;
904 332 : os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
905 332 : found = pin;
906 332 : break;
907 : }
908 : }
909 : }
910 :
911 381 : if (!found)
912 30 : 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 : */
918 351 : 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 : }
923 351 : *pin_len = found->pin_len;
924 351 : found->flags |= PIN_LOCKED;
925 351 : 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 : */
939 928 : int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
940 : {
941 : struct wps_uuid_pin *pin;
942 :
943 932 : dl_list_for_each(pin, ®->pins, struct wps_uuid_pin, list) {
944 382 : if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
945 378 : 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 : }
950 378 : pin->flags &= ~PIN_LOCKED;
951 378 : return 0;
952 : }
953 : }
954 :
955 550 : return -1;
956 : }
957 :
958 :
959 61 : static void wps_registrar_stop_pbc(struct wps_registrar *reg)
960 : {
961 61 : reg->selected_registrar = 0;
962 61 : reg->pbc = 0;
963 61 : os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
964 61 : wps_registrar_remove_authorized_mac(reg,
965 : (u8 *) "\xff\xff\xff\xff\xff\xff");
966 61 : wps_registrar_selected_registrar_changed(reg, 0);
967 61 : }
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 : */
994 127 : int wps_registrar_button_pushed(struct wps_registrar *reg,
995 : const u8 *p2p_dev_addr)
996 : {
997 228 : if (p2p_dev_addr == NULL &&
998 101 : 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 124 : wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
1005 124 : reg->force_pbc_overlap = 0;
1006 124 : reg->selected_registrar = 1;
1007 124 : reg->pbc = 1;
1008 124 : if (p2p_dev_addr)
1009 26 : os_memcpy(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
1010 : else
1011 98 : os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
1012 124 : wps_registrar_add_authorized_mac(reg,
1013 : (u8 *) "\xff\xff\xff\xff\xff\xff");
1014 124 : wps_registrar_selected_registrar_changed(reg, 0);
1015 :
1016 124 : wps_pbc_active_event(reg->wps);
1017 124 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1018 124 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1019 124 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
1020 : reg, NULL);
1021 124 : return 0;
1022 : }
1023 :
1024 :
1025 54 : static void wps_registrar_pbc_completed(struct wps_registrar *reg)
1026 : {
1027 54 : wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
1028 54 : eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1029 54 : wps_registrar_stop_pbc(reg);
1030 54 : wps_pbc_disable_event(reg->wps);
1031 54 : }
1032 :
1033 :
1034 301 : static void wps_registrar_pin_completed(struct wps_registrar *reg)
1035 : {
1036 301 : wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
1037 301 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1038 301 : reg->selected_registrar = 0;
1039 301 : wps_registrar_selected_registrar_changed(reg, 0);
1040 301 : }
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 18 : int wps_registrar_wps_cancel(struct wps_registrar *reg)
1068 : {
1069 18 : 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 12 : } 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 11 : 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 1717 : 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 1717 : int skip_add = 0;
1101 :
1102 1717 : wpa_hexdump_buf(MSG_MSGDUMP,
1103 : "WPS: Probe Request with WPS data received",
1104 : wps_data);
1105 :
1106 1717 : if (wps_parse_msg(wps_data, &attr) < 0)
1107 1568 : return;
1108 :
1109 1717 : 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 1716 : 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 3384 : if (reg->enrollee_seen_cb && attr.uuid_e &&
1122 3336 : attr.primary_dev_type && attr.request_type && !p2p_wildcard) {
1123 1668 : char *dev_name = NULL;
1124 1668 : if (attr.dev_name) {
1125 1668 : dev_name = os_zalloc(attr.dev_name_len + 1);
1126 1668 : if (dev_name) {
1127 1668 : os_memcpy(dev_name, attr.dev_name,
1128 : attr.dev_name_len);
1129 : }
1130 : }
1131 6672 : reg->enrollee_seen_cb(reg->cb_ctx, addr, attr.uuid_e,
1132 : attr.primary_dev_type,
1133 1668 : WPA_GET_BE16(attr.config_methods),
1134 1668 : WPA_GET_BE16(attr.dev_password_id),
1135 1668 : *attr.request_type, dev_name);
1136 1668 : os_free(dev_name);
1137 : }
1138 :
1139 1716 : if (WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
1140 1567 : return; /* Not PBC */
1141 :
1142 894 : wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
1143 894 : MACSTR, MAC2STR(addr));
1144 149 : 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 149 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E from Probe Request", attr.uuid_e,
1150 : WPS_UUID_LEN);
1151 :
1152 : #ifdef WPS_WORKAROUNDS
1153 152 : 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 149 : if (!skip_add)
1169 148 : wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
1170 149 : 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 30 : static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
1190 : const struct wps_device_data *dev)
1191 : {
1192 30 : if (reg->pin_needed_cb == NULL)
1193 30 : return;
1194 :
1195 30 : reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
1196 : }
1197 :
1198 :
1199 312 : 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 312 : if (reg->reg_success_cb == NULL)
1204 329 : return;
1205 :
1206 295 : reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e, dev_pw, dev_pw_len);
1207 : }
1208 :
1209 :
1210 1844 : static int wps_cb_set_ie(struct wps_registrar *reg, struct wpabuf *beacon_ie,
1211 : struct wpabuf *probe_resp_ie)
1212 : {
1213 1844 : return reg->set_ie_cb(reg->cb_ctx, beacon_ie, probe_resp_ie);
1214 : }
1215 :
1216 :
1217 1327 : static void wps_cb_set_sel_reg(struct wps_registrar *reg)
1218 : {
1219 1327 : u16 methods = 0;
1220 1327 : if (reg->set_sel_reg_cb == NULL)
1221 2441 : return;
1222 :
1223 213 : 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 426 : wpa_printf(MSG_DEBUG, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
1232 : "config_methods=0x%x pbc=%d methods=0x%x",
1233 213 : reg->selected_registrar, reg->wps->config_methods,
1234 : reg->pbc, methods);
1235 :
1236 426 : reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
1237 213 : reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
1238 : methods);
1239 : }
1240 :
1241 :
1242 2759 : 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 2759 : size_t vendor_len = 0;
1249 : int i;
1250 :
1251 2759 : if (reg->set_ie_cb == NULL)
1252 915 : return 0;
1253 :
1254 20284 : for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
1255 18440 : 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 1844 : beacon = wpabuf_alloc(400 + vendor_len);
1262 1844 : if (beacon == NULL)
1263 0 : return -1;
1264 1844 : probe = wpabuf_alloc(500 + vendor_len);
1265 1844 : if (probe == NULL) {
1266 0 : wpabuf_free(beacon);
1267 0 : return -1;
1268 : }
1269 :
1270 1844 : auth_macs = wps_authorized_macs(reg, &count);
1271 :
1272 1844 : wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
1273 :
1274 3688 : if (wps_build_version(beacon) ||
1275 3688 : wps_build_wps_state(reg->wps, beacon) ||
1276 3688 : wps_build_ap_setup_locked(reg->wps, beacon) ||
1277 3688 : wps_build_selected_registrar(reg, beacon) ||
1278 3688 : wps_build_sel_reg_dev_password_id(reg, beacon) ||
1279 3688 : wps_build_sel_reg_config_methods(reg, beacon) ||
1280 3688 : wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
1281 3714 : (reg->dualband && wps_build_rf_bands(®->wps->dev, beacon, 0)) ||
1282 3688 : wps_build_wfa_ext(beacon, 0, auth_macs, count) ||
1283 1844 : 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 2290 : if (wps_build_dev_name(®->wps->dev, beacon) ||
1291 1145 : 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 1844 : wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
1299 :
1300 3688 : if (wps_build_version(probe) ||
1301 3688 : wps_build_wps_state(reg->wps, probe) ||
1302 3688 : wps_build_ap_setup_locked(reg->wps, probe) ||
1303 3688 : wps_build_selected_registrar(reg, probe) ||
1304 3688 : wps_build_sel_reg_dev_password_id(reg, probe) ||
1305 3688 : wps_build_sel_reg_config_methods(reg, probe) ||
1306 1844 : wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
1307 1844 : WPS_RESP_REGISTRAR) ||
1308 3688 : wps_build_uuid_e(probe, reg->wps->uuid) ||
1309 3688 : wps_build_device_attrs(®->wps->dev, probe) ||
1310 3688 : wps_build_probe_config_methods(reg, probe) ||
1311 3714 : (reg->dualband && wps_build_rf_bands(®->wps->dev, probe, 0)) ||
1312 3688 : wps_build_wfa_ext(probe, 0, auth_macs, count) ||
1313 1844 : wps_build_vendor_ext(®->wps->dev, probe)) {
1314 0 : wpabuf_free(beacon);
1315 0 : wpabuf_free(probe);
1316 0 : return -1;
1317 : }
1318 :
1319 1844 : beacon = wps_ie_encapsulate(beacon);
1320 1844 : probe = wps_ie_encapsulate(probe);
1321 :
1322 1844 : if (!beacon || !probe) {
1323 0 : wpabuf_free(beacon);
1324 0 : wpabuf_free(probe);
1325 0 : return -1;
1326 : }
1327 :
1328 1844 : 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 1844 : return wps_cb_set_ie(reg, beacon, probe);
1351 : }
1352 :
1353 :
1354 489 : static int wps_get_dev_password(struct wps_data *wps)
1355 : {
1356 : const u8 *pin;
1357 489 : size_t pin_len = 0;
1358 :
1359 489 : bin_clear_free(wps->dev_password, wps->dev_password_len);
1360 489 : wps->dev_password = NULL;
1361 :
1362 489 : if (wps->pbc) {
1363 78 : wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
1364 78 : pin = (const u8 *) "00000000";
1365 78 : pin_len = 8;
1366 : #ifdef CONFIG_WPS_NFC
1367 411 : } else if (wps->nfc_pw_token) {
1368 28 : 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 12 : wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from NFC "
1376 : "Password Token");
1377 12 : pin = wps->nfc_pw_token->dev_pw;
1378 12 : pin_len = wps->nfc_pw_token->dev_pw_len;
1379 386 : } 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 381 : pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
1388 : &pin_len);
1389 381 : 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 473 : if (pin == NULL) {
1399 30 : wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
1400 : "the Enrollee (context %p registrar %p)",
1401 30 : wps->wps, wps->wps->registrar);
1402 30 : wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1403 30 : &wps->peer_dev);
1404 30 : return -1;
1405 : }
1406 :
1407 443 : wps->dev_password = os_malloc(pin_len);
1408 443 : if (wps->dev_password == NULL)
1409 0 : return -1;
1410 443 : os_memcpy(wps->dev_password, pin, pin_len);
1411 443 : wps->dev_password_len = pin_len;
1412 :
1413 443 : return 0;
1414 : }
1415 :
1416 :
1417 498 : static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1418 : {
1419 498 : wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
1420 498 : wpabuf_put_be16(msg, ATTR_UUID_R);
1421 498 : wpabuf_put_be16(msg, WPS_UUID_LEN);
1422 498 : wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1423 498 : return 0;
1424 : }
1425 :
1426 :
1427 389 : 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 389 : if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1434 0 : return -1;
1435 389 : wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1436 389 : wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1437 389 : wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1438 :
1439 389 : 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 389 : wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
1446 389 : wpabuf_put_be16(msg, ATTR_R_HASH1);
1447 389 : wpabuf_put_be16(msg, SHA256_MAC_LEN);
1448 389 : hash = wpabuf_put(msg, SHA256_MAC_LEN);
1449 : /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1450 389 : addr[0] = wps->snonce;
1451 389 : len[0] = WPS_SECRET_NONCE_LEN;
1452 389 : addr[1] = wps->psk1;
1453 389 : len[1] = WPS_PSK_LEN;
1454 389 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
1455 389 : len[2] = wpabuf_len(wps->dh_pubkey_e);
1456 389 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
1457 389 : len[3] = wpabuf_len(wps->dh_pubkey_r);
1458 389 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1459 389 : wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1460 :
1461 389 : wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
1462 389 : wpabuf_put_be16(msg, ATTR_R_HASH2);
1463 389 : wpabuf_put_be16(msg, SHA256_MAC_LEN);
1464 389 : hash = wpabuf_put(msg, SHA256_MAC_LEN);
1465 : /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1466 389 : addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1467 389 : addr[1] = wps->psk2;
1468 389 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1469 389 : wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1470 :
1471 389 : return 0;
1472 : }
1473 :
1474 :
1475 389 : static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1476 : {
1477 389 : wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
1478 389 : wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1479 389 : wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1480 389 : wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1481 389 : return 0;
1482 : }
1483 :
1484 :
1485 367 : static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1486 : {
1487 367 : wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
1488 367 : wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1489 367 : wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1490 367 : wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1491 : WPS_SECRET_NONCE_LEN);
1492 367 : return 0;
1493 : }
1494 :
1495 :
1496 369 : static int wps_build_cred_network_idx(struct wpabuf *msg,
1497 : const struct wps_credential *cred)
1498 : {
1499 369 : wpa_printf(MSG_DEBUG, "WPS: * Network Index (1)");
1500 369 : wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1501 369 : wpabuf_put_be16(msg, 1);
1502 369 : wpabuf_put_u8(msg, 1);
1503 369 : return 0;
1504 : }
1505 :
1506 :
1507 369 : static int wps_build_cred_ssid(struct wpabuf *msg,
1508 : const struct wps_credential *cred)
1509 : {
1510 369 : wpa_printf(MSG_DEBUG, "WPS: * SSID");
1511 738 : wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID for Credential",
1512 369 : cred->ssid, cred->ssid_len);
1513 369 : wpabuf_put_be16(msg, ATTR_SSID);
1514 369 : wpabuf_put_be16(msg, cred->ssid_len);
1515 369 : wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1516 369 : return 0;
1517 : }
1518 :
1519 :
1520 369 : static int wps_build_cred_auth_type(struct wpabuf *msg,
1521 : const struct wps_credential *cred)
1522 : {
1523 369 : wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
1524 369 : cred->auth_type);
1525 369 : wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1526 369 : wpabuf_put_be16(msg, 2);
1527 369 : wpabuf_put_be16(msg, cred->auth_type);
1528 369 : return 0;
1529 : }
1530 :
1531 :
1532 369 : static int wps_build_cred_encr_type(struct wpabuf *msg,
1533 : const struct wps_credential *cred)
1534 : {
1535 369 : wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
1536 369 : cred->encr_type);
1537 369 : wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1538 369 : wpabuf_put_be16(msg, 2);
1539 369 : wpabuf_put_be16(msg, cred->encr_type);
1540 369 : return 0;
1541 : }
1542 :
1543 :
1544 369 : static int wps_build_cred_network_key(struct wpabuf *msg,
1545 : const struct wps_credential *cred)
1546 : {
1547 369 : wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%d)",
1548 369 : (int) cred->key_len);
1549 738 : wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
1550 369 : cred->key, cred->key_len);
1551 369 : wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1552 369 : wpabuf_put_be16(msg, cred->key_len);
1553 369 : wpabuf_put_data(msg, cred->key, cred->key_len);
1554 369 : return 0;
1555 : }
1556 :
1557 :
1558 369 : static int wps_build_credential(struct wpabuf *msg,
1559 : const struct wps_credential *cred)
1560 : {
1561 738 : if (wps_build_cred_network_idx(msg, cred) ||
1562 738 : wps_build_cred_ssid(msg, cred) ||
1563 738 : wps_build_cred_auth_type(msg, cred) ||
1564 738 : wps_build_cred_encr_type(msg, cred) ||
1565 738 : wps_build_cred_network_key(msg, cred) ||
1566 369 : wps_build_mac_addr(msg, cred->mac_addr))
1567 0 : return -1;
1568 369 : 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_clear_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_clear_free(wbuf);
1587 1 : return 0;
1588 : }
1589 :
1590 :
1591 326 : int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1592 : {
1593 : struct wpabuf *cred;
1594 :
1595 326 : if (wps->wps->registrar->skip_cred_build)
1596 4 : goto skip_cred_build;
1597 :
1598 322 : wpa_printf(MSG_DEBUG, "WPS: * Credential");
1599 322 : if (wps->use_cred) {
1600 13 : os_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
1601 13 : goto use_provided;
1602 : }
1603 309 : os_memset(&wps->cred, 0, sizeof(wps->cred));
1604 :
1605 309 : os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1606 309 : wps->cred.ssid_len = wps->wps->ssid_len;
1607 :
1608 : /* Select the best authentication and encryption type */
1609 618 : wpa_printf(MSG_DEBUG,
1610 : "WPS: Own auth types 0x%x - masked Enrollee auth types 0x%x",
1611 618 : wps->wps->auth_types, wps->auth_type);
1612 309 : if (wps->auth_type & WPS_AUTH_WPA2PSK)
1613 309 : wps->auth_type = WPS_AUTH_WPA2PSK;
1614 0 : else if (wps->auth_type & WPS_AUTH_WPAPSK)
1615 0 : wps->auth_type = WPS_AUTH_WPAPSK;
1616 0 : else if (wps->auth_type & WPS_AUTH_OPEN)
1617 0 : wps->auth_type = WPS_AUTH_OPEN;
1618 : else {
1619 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1620 0 : wps->auth_type);
1621 0 : return -1;
1622 : }
1623 309 : wps->cred.auth_type = wps->auth_type;
1624 :
1625 1236 : wpa_printf(MSG_DEBUG,
1626 : "WPS: Own encr types 0x%x (rsn: 0x%x, wpa: 0x%x) - masked Enrollee encr types 0x%x",
1627 618 : wps->wps->encr_types, wps->wps->encr_types_rsn,
1628 618 : wps->wps->encr_types_wpa, wps->encr_type);
1629 309 : if (wps->wps->ap && wps->auth_type == WPS_AUTH_WPA2PSK)
1630 309 : wps->encr_type &= wps->wps->encr_types_rsn;
1631 0 : else if (wps->wps->ap && wps->auth_type == WPS_AUTH_WPAPSK)
1632 0 : wps->encr_type &= wps->wps->encr_types_wpa;
1633 309 : if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1634 0 : wps->auth_type == WPS_AUTH_WPAPSK) {
1635 618 : if (wps->encr_type & WPS_ENCR_AES)
1636 309 : wps->encr_type = WPS_ENCR_AES;
1637 0 : else if (wps->encr_type & WPS_ENCR_TKIP)
1638 0 : wps->encr_type = WPS_ENCR_TKIP;
1639 : else {
1640 0 : wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1641 : "type for WPA/WPA2");
1642 0 : return -1;
1643 : }
1644 : } else {
1645 0 : if (wps->encr_type & WPS_ENCR_NONE)
1646 0 : wps->encr_type = WPS_ENCR_NONE;
1647 : #ifdef CONFIG_TESTING_OPTIONS
1648 0 : else if (wps->encr_type & WPS_ENCR_WEP)
1649 0 : wps->encr_type = WPS_ENCR_WEP;
1650 : #endif /* CONFIG_TESTING_OPTIONS */
1651 : else {
1652 0 : wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1653 : "type for non-WPA/WPA2 mode");
1654 0 : return -1;
1655 : }
1656 : }
1657 309 : wps->cred.encr_type = wps->encr_type;
1658 : /*
1659 : * Set MAC address in the Credential to be the Enrollee's MAC address
1660 : */
1661 309 : os_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ETH_ALEN);
1662 :
1663 316 : if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1664 14 : !wps->wps->registrar->disable_auto_conf) {
1665 : u8 r[16];
1666 : /* Generate a random passphrase */
1667 7 : if (random_pool_ready() != 1 ||
1668 7 : random_get_bytes(r, sizeof(r)) < 0) {
1669 0 : wpa_printf(MSG_INFO,
1670 : "WPS: Could not generate random PSK");
1671 0 : return -1;
1672 : }
1673 7 : os_free(wps->new_psk);
1674 7 : wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1675 7 : if (wps->new_psk == NULL)
1676 0 : return -1;
1677 7 : wps->new_psk_len--; /* remove newline */
1678 49 : while (wps->new_psk_len &&
1679 21 : wps->new_psk[wps->new_psk_len - 1] == '=')
1680 14 : wps->new_psk_len--;
1681 14 : wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1682 7 : wps->new_psk, wps->new_psk_len);
1683 7 : os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1684 7 : wps->cred.key_len = wps->new_psk_len;
1685 596 : } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1686 758 : wps->use_psk_key && wps->wps->psk_set) {
1687 : char hex[65];
1688 232 : wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
1689 232 : wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
1690 232 : os_memcpy(wps->cred.key, hex, 32 * 2);
1691 232 : wps->cred.key_len = 32 * 2;
1692 132 : } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1693 62 : wps->wps->network_key) {
1694 55 : os_memcpy(wps->cred.key, wps->wps->network_key,
1695 : wps->wps->network_key_len);
1696 55 : wps->cred.key_len = wps->wps->network_key_len;
1697 15 : } else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1698 : char hex[65];
1699 : /* Generate a random per-device PSK */
1700 15 : os_free(wps->new_psk);
1701 15 : wps->new_psk_len = 32;
1702 15 : wps->new_psk = os_malloc(wps->new_psk_len);
1703 15 : if (wps->new_psk == NULL)
1704 3 : return -1;
1705 14 : if (random_pool_ready() != 1 ||
1706 14 : random_get_bytes(wps->new_psk, wps->new_psk_len) < 0) {
1707 1 : wpa_printf(MSG_INFO,
1708 : "WPS: Could not generate random PSK");
1709 1 : os_free(wps->new_psk);
1710 1 : wps->new_psk = NULL;
1711 1 : return -1;
1712 : }
1713 26 : wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1714 13 : wps->new_psk, wps->new_psk_len);
1715 13 : wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1716 : wps->new_psk_len);
1717 13 : os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1718 13 : wps->cred.key_len = wps->new_psk_len * 2;
1719 : }
1720 :
1721 : use_provided:
1722 : #ifdef CONFIG_WPS_TESTING
1723 320 : if (wps_testing_dummy_cred)
1724 1 : cred = wpabuf_alloc(200);
1725 : else
1726 319 : cred = NULL;
1727 320 : if (cred) {
1728 : struct wps_credential dummy;
1729 1 : wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
1730 1 : os_memset(&dummy, 0, sizeof(dummy));
1731 1 : os_memcpy(dummy.ssid, "dummy", 5);
1732 1 : dummy.ssid_len = 5;
1733 1 : dummy.auth_type = WPS_AUTH_WPA2PSK;
1734 1 : dummy.encr_type = WPS_ENCR_AES;
1735 1 : os_memcpy(dummy.key, "dummy psk", 9);
1736 1 : dummy.key_len = 9;
1737 1 : os_memcpy(dummy.mac_addr, wps->mac_addr_e, ETH_ALEN);
1738 1 : wps_build_credential(cred, &dummy);
1739 1 : wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
1740 :
1741 1 : wpabuf_put_be16(msg, ATTR_CRED);
1742 1 : wpabuf_put_be16(msg, wpabuf_len(cred));
1743 1 : wpabuf_put_buf(msg, cred);
1744 :
1745 1 : wpabuf_free(cred);
1746 : }
1747 : #endif /* CONFIG_WPS_TESTING */
1748 :
1749 320 : cred = wpabuf_alloc(200);
1750 320 : if (cred == NULL)
1751 1 : return -1;
1752 :
1753 319 : if (wps_build_credential(cred, &wps->cred)) {
1754 0 : wpabuf_clear_free(cred);
1755 0 : return -1;
1756 : }
1757 :
1758 319 : wpabuf_put_be16(msg, ATTR_CRED);
1759 319 : wpabuf_put_be16(msg, wpabuf_len(cred));
1760 319 : wpabuf_put_buf(msg, cred);
1761 319 : wpabuf_clear_free(cred);
1762 :
1763 : skip_cred_build:
1764 323 : if (wps->wps->registrar->extra_cred) {
1765 4 : wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
1766 4 : wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1767 : }
1768 :
1769 323 : return 0;
1770 : }
1771 :
1772 :
1773 48 : static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1774 : {
1775 48 : wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
1776 :
1777 48 : if (wps_build_credential(msg, &wps->cred))
1778 0 : return -1;
1779 :
1780 48 : return 0;
1781 : }
1782 :
1783 :
1784 39 : static struct wpabuf * wps_build_ap_cred(struct wps_data *wps)
1785 : {
1786 : struct wpabuf *msg, *plain;
1787 :
1788 39 : msg = wpabuf_alloc(1000);
1789 39 : if (msg == NULL)
1790 0 : return NULL;
1791 :
1792 39 : plain = wpabuf_alloc(200);
1793 39 : if (plain == NULL) {
1794 0 : wpabuf_free(msg);
1795 0 : return NULL;
1796 : }
1797 :
1798 39 : if (wps_build_ap_settings(wps, plain)) {
1799 0 : wpabuf_clear_free(plain);
1800 0 : wpabuf_free(msg);
1801 0 : return NULL;
1802 : }
1803 :
1804 39 : wpabuf_put_be16(msg, ATTR_CRED);
1805 39 : wpabuf_put_be16(msg, wpabuf_len(plain));
1806 39 : wpabuf_put_buf(msg, plain);
1807 39 : wpabuf_clear_free(plain);
1808 :
1809 39 : return msg;
1810 : }
1811 :
1812 :
1813 459 : static struct wpabuf * wps_build_m2(struct wps_data *wps)
1814 : {
1815 : struct wpabuf *msg;
1816 459 : int config_in_m2 = 0;
1817 :
1818 459 : if (random_get_bytes(wps->nonce_r, WPS_NONCE_LEN) < 0)
1819 0 : return NULL;
1820 459 : wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1821 459 : wps->nonce_r, WPS_NONCE_LEN);
1822 459 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1823 :
1824 459 : wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1825 459 : msg = wpabuf_alloc(1000);
1826 459 : if (msg == NULL)
1827 0 : return NULL;
1828 :
1829 918 : if (wps_build_version(msg) ||
1830 918 : wps_build_msg_type(msg, WPS_M2) ||
1831 918 : wps_build_enrollee_nonce(wps, msg) ||
1832 918 : wps_build_registrar_nonce(wps, msg) ||
1833 918 : wps_build_uuid_r(wps, msg) ||
1834 917 : wps_build_public_key(wps, msg) ||
1835 916 : wps_derive_keys(wps) ||
1836 916 : wps_build_auth_type_flags(wps, msg) ||
1837 916 : wps_build_encr_type_flags(wps, msg) ||
1838 916 : wps_build_conn_type_flags(wps, msg) ||
1839 916 : wps_build_config_methods_r(wps->wps->registrar, msg) ||
1840 916 : wps_build_device_attrs(&wps->wps->dev, msg) ||
1841 458 : wps_build_rf_bands(&wps->wps->dev, msg,
1842 916 : wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1843 916 : wps_build_assoc_state(wps, msg) ||
1844 916 : wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1845 916 : wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1846 916 : wps_build_os_version(&wps->wps->dev, msg) ||
1847 458 : wps_build_wfa_ext(msg, 0, NULL, 0)) {
1848 1 : wpabuf_free(msg);
1849 1 : return NULL;
1850 : }
1851 :
1852 : #ifdef CONFIG_WPS_NFC
1853 482 : if (wps->nfc_pw_token && wps->nfc_pw_token->pk_hash_provided_oob &&
1854 24 : wps->nfc_pw_token->pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1855 : /*
1856 : * Use abbreviated handshake since public key hash allowed
1857 : * Enrollee to validate our public key similarly to how Enrollee
1858 : * public key was validated. There is no need to validate Device
1859 : * Password in this case.
1860 : */
1861 16 : struct wpabuf *plain = wpabuf_alloc(500);
1862 32 : if (plain == NULL ||
1863 32 : wps_build_cred(wps, plain) ||
1864 32 : wps_build_key_wrap_auth(wps, plain) ||
1865 16 : wps_build_encr_settings(wps, msg, plain)) {
1866 0 : wpabuf_free(msg);
1867 0 : wpabuf_clear_free(plain);
1868 0 : return NULL;
1869 : }
1870 16 : wpabuf_clear_free(plain);
1871 16 : config_in_m2 = 1;
1872 : }
1873 : #endif /* CONFIG_WPS_NFC */
1874 :
1875 458 : if (wps_build_authenticator(wps, msg)) {
1876 0 : wpabuf_free(msg);
1877 0 : return NULL;
1878 : }
1879 :
1880 458 : wps->int_reg = 1;
1881 458 : wps->state = config_in_m2 ? RECV_DONE : RECV_M3;
1882 458 : return msg;
1883 : }
1884 :
1885 :
1886 39 : static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1887 : {
1888 : struct wpabuf *msg;
1889 39 : u16 err = wps->config_error;
1890 :
1891 39 : wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1892 39 : msg = wpabuf_alloc(1000);
1893 39 : if (msg == NULL)
1894 0 : return NULL;
1895 :
1896 39 : if (wps->wps->ap && wps->wps->ap_setup_locked &&
1897 : err == WPS_CFG_NO_ERROR)
1898 4 : err = WPS_CFG_SETUP_LOCKED;
1899 :
1900 78 : if (wps_build_version(msg) ||
1901 78 : wps_build_msg_type(msg, WPS_M2D) ||
1902 78 : wps_build_enrollee_nonce(wps, msg) ||
1903 78 : wps_build_registrar_nonce(wps, msg) ||
1904 78 : wps_build_uuid_r(wps, msg) ||
1905 78 : wps_build_auth_type_flags(wps, msg) ||
1906 78 : wps_build_encr_type_flags(wps, msg) ||
1907 78 : wps_build_conn_type_flags(wps, msg) ||
1908 78 : wps_build_config_methods_r(wps->wps->registrar, msg) ||
1909 78 : wps_build_device_attrs(&wps->wps->dev, msg) ||
1910 39 : wps_build_rf_bands(&wps->wps->dev, msg,
1911 78 : wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1912 78 : wps_build_assoc_state(wps, msg) ||
1913 78 : wps_build_config_error(msg, err) ||
1914 78 : wps_build_os_version(&wps->wps->dev, msg) ||
1915 39 : wps_build_wfa_ext(msg, 0, NULL, 0)) {
1916 0 : wpabuf_free(msg);
1917 0 : return NULL;
1918 : }
1919 :
1920 39 : wps->state = RECV_M2D_ACK;
1921 39 : return msg;
1922 : }
1923 :
1924 :
1925 389 : static struct wpabuf * wps_build_m4(struct wps_data *wps)
1926 : {
1927 : struct wpabuf *msg, *plain;
1928 :
1929 389 : wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1930 :
1931 389 : if (wps_derive_psk(wps, wps->dev_password, wps->dev_password_len) < 0)
1932 0 : return NULL;
1933 :
1934 389 : plain = wpabuf_alloc(200);
1935 389 : if (plain == NULL)
1936 0 : return NULL;
1937 :
1938 389 : msg = wpabuf_alloc(1000);
1939 389 : if (msg == NULL) {
1940 0 : wpabuf_free(plain);
1941 0 : return NULL;
1942 : }
1943 :
1944 778 : if (wps_build_version(msg) ||
1945 778 : wps_build_msg_type(msg, WPS_M4) ||
1946 778 : wps_build_enrollee_nonce(wps, msg) ||
1947 778 : wps_build_r_hash(wps, msg) ||
1948 778 : wps_build_r_snonce1(wps, plain) ||
1949 778 : wps_build_key_wrap_auth(wps, plain) ||
1950 777 : wps_build_encr_settings(wps, msg, plain) ||
1951 776 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
1952 388 : wps_build_authenticator(wps, msg)) {
1953 1 : wpabuf_clear_free(plain);
1954 1 : wpabuf_free(msg);
1955 1 : return NULL;
1956 : }
1957 388 : wpabuf_clear_free(plain);
1958 :
1959 388 : wps->state = RECV_M5;
1960 388 : return msg;
1961 : }
1962 :
1963 :
1964 367 : static struct wpabuf * wps_build_m6(struct wps_data *wps)
1965 : {
1966 : struct wpabuf *msg, *plain;
1967 :
1968 367 : wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1969 :
1970 367 : plain = wpabuf_alloc(200);
1971 367 : if (plain == NULL)
1972 0 : return NULL;
1973 :
1974 367 : msg = wpabuf_alloc(1000);
1975 367 : if (msg == NULL) {
1976 0 : wpabuf_free(plain);
1977 0 : return NULL;
1978 : }
1979 :
1980 734 : if (wps_build_version(msg) ||
1981 734 : wps_build_msg_type(msg, WPS_M6) ||
1982 734 : wps_build_enrollee_nonce(wps, msg) ||
1983 734 : wps_build_r_snonce2(wps, plain) ||
1984 734 : wps_build_key_wrap_auth(wps, plain) ||
1985 734 : wps_build_encr_settings(wps, msg, plain) ||
1986 734 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
1987 367 : wps_build_authenticator(wps, msg)) {
1988 0 : wpabuf_clear_free(plain);
1989 0 : wpabuf_free(msg);
1990 0 : return NULL;
1991 : }
1992 367 : wpabuf_clear_free(plain);
1993 :
1994 367 : wps->wps_pin_revealed = 1;
1995 367 : wps->state = RECV_M7;
1996 367 : return msg;
1997 : }
1998 :
1999 :
2000 314 : static struct wpabuf * wps_build_m8(struct wps_data *wps)
2001 : {
2002 : struct wpabuf *msg, *plain;
2003 :
2004 314 : wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
2005 :
2006 314 : plain = wpabuf_alloc(500);
2007 314 : if (plain == NULL)
2008 0 : return NULL;
2009 :
2010 314 : msg = wpabuf_alloc(1000);
2011 314 : if (msg == NULL) {
2012 0 : wpabuf_free(plain);
2013 0 : return NULL;
2014 : }
2015 :
2016 628 : if (wps_build_version(msg) ||
2017 628 : wps_build_msg_type(msg, WPS_M8) ||
2018 628 : wps_build_enrollee_nonce(wps, msg) ||
2019 643 : ((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
2020 640 : (!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
2021 622 : wps_build_key_wrap_auth(wps, plain) ||
2022 622 : wps_build_encr_settings(wps, msg, plain) ||
2023 622 : wps_build_wfa_ext(msg, 0, NULL, 0) ||
2024 311 : wps_build_authenticator(wps, msg)) {
2025 3 : wpabuf_clear_free(plain);
2026 3 : wpabuf_clear_free(msg);
2027 3 : return NULL;
2028 : }
2029 311 : wpabuf_clear_free(plain);
2030 :
2031 311 : wps->state = RECV_DONE;
2032 311 : return msg;
2033 : }
2034 :
2035 :
2036 1685 : struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
2037 : enum wsc_op_code *op_code)
2038 : {
2039 : struct wpabuf *msg;
2040 :
2041 : #ifdef CONFIG_WPS_UPNP
2042 1685 : if (!wps->int_reg && wps->wps->wps_upnp) {
2043 52 : struct upnp_pending_message *p, *prev = NULL;
2044 52 : if (wps->ext_reg > 1)
2045 27 : wps_registrar_free_pending_m2(wps->wps);
2046 52 : p = wps->wps->upnp_msgs;
2047 : /* TODO: check pending message MAC address */
2048 104 : while (p && p->next) {
2049 0 : prev = p;
2050 0 : p = p->next;
2051 : }
2052 52 : if (p) {
2053 39 : wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
2054 : "UPnP");
2055 39 : if (prev)
2056 0 : prev->next = NULL;
2057 : else
2058 39 : wps->wps->upnp_msgs = NULL;
2059 39 : msg = p->msg;
2060 39 : switch (p->type) {
2061 : case WPS_WSC_ACK:
2062 0 : *op_code = WSC_ACK;
2063 0 : break;
2064 : case WPS_WSC_NACK:
2065 0 : *op_code = WSC_NACK;
2066 0 : break;
2067 : default:
2068 39 : *op_code = WSC_MSG;
2069 39 : break;
2070 : }
2071 39 : os_free(p);
2072 39 : if (wps->ext_reg == 0)
2073 0 : wps->ext_reg = 1;
2074 39 : return msg;
2075 : }
2076 : }
2077 1646 : if (wps->ext_reg) {
2078 0 : wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
2079 : "pending message available");
2080 0 : return NULL;
2081 : }
2082 : #endif /* CONFIG_WPS_UPNP */
2083 :
2084 1646 : switch (wps->state) {
2085 : case SEND_M2:
2086 489 : if (wps_get_dev_password(wps) < 0)
2087 30 : msg = wps_build_m2d(wps);
2088 : else
2089 459 : msg = wps_build_m2(wps);
2090 489 : *op_code = WSC_MSG;
2091 489 : break;
2092 : case SEND_M2D:
2093 9 : msg = wps_build_m2d(wps);
2094 9 : *op_code = WSC_MSG;
2095 9 : break;
2096 : case SEND_M4:
2097 389 : msg = wps_build_m4(wps);
2098 389 : *op_code = WSC_MSG;
2099 389 : break;
2100 : case SEND_M6:
2101 367 : msg = wps_build_m6(wps);
2102 367 : *op_code = WSC_MSG;
2103 367 : break;
2104 : case SEND_M8:
2105 314 : msg = wps_build_m8(wps);
2106 314 : *op_code = WSC_MSG;
2107 314 : break;
2108 : case RECV_DONE:
2109 6 : msg = wps_build_wsc_ack(wps);
2110 6 : *op_code = WSC_ACK;
2111 6 : break;
2112 : case SEND_WSC_NACK:
2113 72 : msg = wps_build_wsc_nack(wps);
2114 72 : *op_code = WSC_NACK;
2115 72 : break;
2116 : default:
2117 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
2118 0 : "a message", wps->state);
2119 0 : msg = NULL;
2120 0 : break;
2121 : }
2122 :
2123 1646 : if (*op_code == WSC_MSG && msg) {
2124 : /* Save a copy of the last message for Authenticator derivation
2125 : */
2126 1563 : wpabuf_free(wps->last_msg);
2127 1563 : wps->last_msg = wpabuf_dup(msg);
2128 : }
2129 :
2130 1646 : return msg;
2131 : }
2132 :
2133 :
2134 522 : static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
2135 : {
2136 522 : if (e_nonce == NULL) {
2137 1 : wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
2138 1 : return -1;
2139 : }
2140 :
2141 521 : os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
2142 521 : wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
2143 521 : wps->nonce_e, WPS_NONCE_LEN);
2144 :
2145 521 : return 0;
2146 : }
2147 :
2148 :
2149 1120 : static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
2150 : {
2151 1120 : if (r_nonce == NULL) {
2152 0 : wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
2153 0 : return -1;
2154 : }
2155 :
2156 1120 : if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
2157 0 : wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
2158 0 : return -1;
2159 : }
2160 :
2161 1120 : return 0;
2162 : }
2163 :
2164 :
2165 524 : static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
2166 : {
2167 524 : if (uuid_e == NULL) {
2168 1 : wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
2169 1 : return -1;
2170 : }
2171 :
2172 523 : os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
2173 523 : wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
2174 :
2175 523 : return 0;
2176 : }
2177 :
2178 :
2179 501 : static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
2180 : {
2181 501 : if (pw_id == NULL) {
2182 1 : wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
2183 1 : return -1;
2184 : }
2185 :
2186 500 : wps->dev_pw_id = WPA_GET_BE16(pw_id);
2187 500 : wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
2188 :
2189 500 : return 0;
2190 : }
2191 :
2192 :
2193 391 : static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
2194 : {
2195 391 : if (e_hash1 == NULL) {
2196 1 : wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
2197 1 : return -1;
2198 : }
2199 :
2200 390 : os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
2201 390 : wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
2202 :
2203 390 : return 0;
2204 : }
2205 :
2206 :
2207 390 : static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
2208 : {
2209 390 : if (e_hash2 == NULL) {
2210 1 : wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
2211 1 : return -1;
2212 : }
2213 :
2214 389 : os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
2215 389 : wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
2216 :
2217 389 : return 0;
2218 : }
2219 :
2220 :
2221 369 : static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
2222 : {
2223 : u8 hash[SHA256_MAC_LEN];
2224 : const u8 *addr[4];
2225 : size_t len[4];
2226 :
2227 369 : if (e_snonce1 == NULL) {
2228 1 : wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
2229 1 : return -1;
2230 : }
2231 :
2232 368 : wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
2233 : WPS_SECRET_NONCE_LEN);
2234 :
2235 : /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
2236 368 : addr[0] = e_snonce1;
2237 368 : len[0] = WPS_SECRET_NONCE_LEN;
2238 368 : addr[1] = wps->psk1;
2239 368 : len[1] = WPS_PSK_LEN;
2240 368 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
2241 368 : len[2] = wpabuf_len(wps->dh_pubkey_e);
2242 368 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
2243 368 : len[3] = wpabuf_len(wps->dh_pubkey_r);
2244 368 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2245 :
2246 368 : if (os_memcmp_const(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
2247 1 : wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
2248 : "not match with the pre-committed value");
2249 1 : wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2250 1 : wps_pwd_auth_fail_event(wps->wps, 0, 1, wps->mac_addr_e);
2251 1 : return -1;
2252 : }
2253 :
2254 367 : wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
2255 : "half of the device password");
2256 :
2257 367 : return 0;
2258 : }
2259 :
2260 :
2261 355 : static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
2262 : {
2263 : u8 hash[SHA256_MAC_LEN];
2264 : const u8 *addr[4];
2265 : size_t len[4];
2266 :
2267 355 : if (e_snonce2 == NULL) {
2268 1 : wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
2269 1 : return -1;
2270 : }
2271 :
2272 354 : wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
2273 : WPS_SECRET_NONCE_LEN);
2274 :
2275 : /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
2276 354 : addr[0] = e_snonce2;
2277 354 : len[0] = WPS_SECRET_NONCE_LEN;
2278 354 : addr[1] = wps->psk2;
2279 354 : len[1] = WPS_PSK_LEN;
2280 354 : addr[2] = wpabuf_head(wps->dh_pubkey_e);
2281 354 : len[2] = wpabuf_len(wps->dh_pubkey_e);
2282 354 : addr[3] = wpabuf_head(wps->dh_pubkey_r);
2283 354 : len[3] = wpabuf_len(wps->dh_pubkey_r);
2284 354 : hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2285 :
2286 354 : if (os_memcmp_const(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
2287 1 : wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
2288 : "not match with the pre-committed value");
2289 1 : wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2290 1 : wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2291 1 : wps_pwd_auth_fail_event(wps->wps, 0, 2, wps->mac_addr_e);
2292 1 : return -1;
2293 : }
2294 :
2295 353 : wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
2296 : "half of the device password");
2297 353 : wps->wps_pin_revealed = 0;
2298 353 : wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
2299 :
2300 : /*
2301 : * In case wildcard PIN is used and WPS handshake succeeds in the first
2302 : * attempt, wps_registrar_unlock_pin() would not free the PIN, so make
2303 : * sure the PIN gets invalidated here.
2304 : */
2305 353 : wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2306 :
2307 353 : return 0;
2308 : }
2309 :
2310 :
2311 523 : static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
2312 : {
2313 523 : if (mac_addr == NULL) {
2314 1 : wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
2315 1 : return -1;
2316 : }
2317 :
2318 3132 : wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
2319 3132 : MAC2STR(mac_addr));
2320 522 : os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
2321 522 : os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
2322 :
2323 522 : return 0;
2324 : }
2325 :
2326 :
2327 521 : static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
2328 : size_t pk_len)
2329 : {
2330 521 : if (pk == NULL || pk_len == 0) {
2331 1 : wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
2332 1 : return -1;
2333 : }
2334 :
2335 520 : wpabuf_free(wps->dh_pubkey_e);
2336 520 : wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
2337 520 : if (wps->dh_pubkey_e == NULL)
2338 1 : return -1;
2339 :
2340 519 : return 0;
2341 : }
2342 :
2343 :
2344 519 : static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
2345 : {
2346 : u16 auth_types;
2347 :
2348 519 : if (auth == NULL) {
2349 1 : wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
2350 : "received");
2351 1 : return -1;
2352 : }
2353 :
2354 518 : auth_types = WPA_GET_BE16(auth);
2355 :
2356 518 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
2357 : auth_types);
2358 : #ifdef WPS_WORKAROUNDS
2359 : /*
2360 : * Some deployed implementations seem to advertise incorrect information
2361 : * in this attribute. A value of 0x1b (WPA2 + WPA + WPAPSK + OPEN, but
2362 : * no WPA2PSK) has been reported to be used. Add WPA2PSK to the list to
2363 : * avoid issues with building Credentials that do not use the strongest
2364 : * actually supported authentication option (that device does support
2365 : * WPA2PSK even when it does not claim it here).
2366 : */
2367 518 : if ((auth_types &
2368 : (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) ==
2369 : (WPS_AUTH_WPA2 | WPS_AUTH_WPAPSK)) {
2370 1 : wpa_printf(MSG_DEBUG,
2371 : "WPS: Workaround - assume Enrollee supports WPA2PSK based on claimed WPA2 support");
2372 1 : auth_types |= WPS_AUTH_WPA2PSK;
2373 : }
2374 : #endif /* WPS_WORKAROUNDS */
2375 518 : wps->auth_type = wps->wps->auth_types & auth_types;
2376 518 : if (wps->auth_type == 0) {
2377 122 : wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2378 : "authentication types (own 0x%x Enrollee 0x%x)",
2379 61 : wps->wps->auth_types, auth_types);
2380 : #ifdef WPS_WORKAROUNDS
2381 : /*
2382 : * Some deployed implementations seem to advertise incorrect
2383 : * information in this attribute. For example, Linksys WRT350N
2384 : * seems to have a byteorder bug that breaks this negotiation.
2385 : * In order to interoperate with existing implementations,
2386 : * assume that the Enrollee supports everything we do.
2387 : */
2388 61 : wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2389 : "does not advertise supported authentication types "
2390 : "correctly");
2391 61 : wps->auth_type = wps->wps->auth_types;
2392 : #else /* WPS_WORKAROUNDS */
2393 : return -1;
2394 : #endif /* WPS_WORKAROUNDS */
2395 : }
2396 :
2397 518 : return 0;
2398 : }
2399 :
2400 :
2401 518 : static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
2402 : {
2403 : u16 encr_types;
2404 :
2405 518 : if (encr == NULL) {
2406 1 : wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
2407 : "received");
2408 1 : return -1;
2409 : }
2410 :
2411 517 : encr_types = WPA_GET_BE16(encr);
2412 :
2413 517 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
2414 : encr_types);
2415 517 : wps->encr_type = wps->wps->encr_types & encr_types;
2416 517 : if (wps->encr_type == 0) {
2417 116 : wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2418 : "encryption types (own 0x%x Enrollee 0x%x)",
2419 58 : wps->wps->encr_types, encr_types);
2420 : #ifdef WPS_WORKAROUNDS
2421 : /*
2422 : * Some deployed implementations seem to advertise incorrect
2423 : * information in this attribute. For example, Linksys WRT350N
2424 : * seems to have a byteorder bug that breaks this negotiation.
2425 : * In order to interoperate with existing implementations,
2426 : * assume that the Enrollee supports everything we do.
2427 : */
2428 58 : wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2429 : "does not advertise supported encryption types "
2430 : "correctly");
2431 58 : wps->encr_type = wps->wps->encr_types;
2432 : #else /* WPS_WORKAROUNDS */
2433 : return -1;
2434 : #endif /* WPS_WORKAROUNDS */
2435 : }
2436 :
2437 517 : return 0;
2438 : }
2439 :
2440 :
2441 517 : static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
2442 : {
2443 517 : if (conn == NULL) {
2444 1 : wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
2445 : "received");
2446 1 : return -1;
2447 : }
2448 :
2449 516 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
2450 516 : *conn);
2451 :
2452 516 : return 0;
2453 : }
2454 :
2455 :
2456 516 : static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
2457 : {
2458 : u16 m;
2459 :
2460 516 : if (methods == NULL) {
2461 1 : wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
2462 1 : return -1;
2463 : }
2464 :
2465 515 : m = WPA_GET_BE16(methods);
2466 :
2467 4635 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
2468 : "%s%s%s%s%s%s%s%s%s", m,
2469 515 : m & WPS_CONFIG_USBA ? " [USBA]" : "",
2470 515 : m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
2471 515 : m & WPS_CONFIG_LABEL ? " [Label]" : "",
2472 515 : m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
2473 515 : m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
2474 515 : m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
2475 515 : m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
2476 515 : m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
2477 515 : m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
2478 :
2479 515 : if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
2480 : /*
2481 : * The Enrollee does not have a display so it is unlikely to be
2482 : * able to show the passphrase to a user and as such, could
2483 : * benefit from receiving PSK to reduce key derivation time.
2484 : */
2485 92 : wpa_printf(MSG_DEBUG, "WPS: Prefer PSK format key due to "
2486 : "Enrollee not supporting display");
2487 92 : wps->use_psk_key = 1;
2488 : }
2489 :
2490 515 : return 0;
2491 : }
2492 :
2493 :
2494 515 : static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
2495 : {
2496 515 : if (state == NULL) {
2497 1 : wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
2498 : "received");
2499 1 : return -1;
2500 : }
2501 :
2502 514 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
2503 514 : *state);
2504 :
2505 514 : return 0;
2506 : }
2507 :
2508 :
2509 502 : static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
2510 : {
2511 : u16 a;
2512 :
2513 502 : if (assoc == NULL) {
2514 1 : wpa_printf(MSG_DEBUG, "WPS: No Association State received");
2515 1 : return -1;
2516 : }
2517 :
2518 501 : a = WPA_GET_BE16(assoc);
2519 501 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
2520 :
2521 501 : return 0;
2522 : }
2523 :
2524 :
2525 500 : static int wps_process_config_error(struct wps_data *wps, const u8 *err)
2526 : {
2527 : u16 e;
2528 :
2529 500 : if (err == NULL) {
2530 1 : wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2531 1 : return -1;
2532 : }
2533 :
2534 499 : e = WPA_GET_BE16(err);
2535 499 : wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2536 :
2537 499 : return 0;
2538 : }
2539 :
2540 :
2541 78 : static int wps_registrar_p2p_dev_addr_match(struct wps_data *wps)
2542 : {
2543 : #ifdef CONFIG_P2P
2544 29 : struct wps_registrar *reg = wps->wps->registrar;
2545 :
2546 29 : if (is_zero_ether_addr(reg->p2p_dev_addr))
2547 5 : return 1; /* no filtering in use */
2548 :
2549 24 : if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) != 0) {
2550 12 : wpa_printf(MSG_DEBUG, "WPS: No match on P2P Device Address "
2551 : "filtering for PBC: expected " MACSTR " was "
2552 : MACSTR " - indicate PBC session overlap",
2553 6 : MAC2STR(reg->p2p_dev_addr),
2554 6 : MAC2STR(wps->p2p_dev_addr));
2555 1 : return 0;
2556 : }
2557 : #endif /* CONFIG_P2P */
2558 72 : return 1;
2559 : }
2560 :
2561 :
2562 9 : static int wps_registrar_skip_overlap(struct wps_data *wps)
2563 : {
2564 : #ifdef CONFIG_P2P
2565 7 : struct wps_registrar *reg = wps->wps->registrar;
2566 :
2567 7 : if (is_zero_ether_addr(reg->p2p_dev_addr))
2568 2 : return 0; /* no specific Enrollee selected */
2569 :
2570 5 : if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) == 0) {
2571 4 : wpa_printf(MSG_DEBUG, "WPS: Skip PBC overlap due to selected "
2572 : "Enrollee match");
2573 4 : return 1;
2574 : }
2575 : #endif /* CONFIG_P2P */
2576 3 : return 0;
2577 : }
2578 :
2579 :
2580 525 : static enum wps_process_res wps_process_m1(struct wps_data *wps,
2581 : struct wps_parse_attr *attr)
2582 : {
2583 525 : wpa_printf(MSG_DEBUG, "WPS: Received M1");
2584 :
2585 525 : if (wps->state != RECV_M1) {
2586 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2587 1 : "receiving M1", wps->state);
2588 1 : return WPS_FAILURE;
2589 : }
2590 :
2591 1047 : if (wps_process_uuid_e(wps, attr->uuid_e) ||
2592 1045 : wps_process_mac_addr(wps, attr->mac_addr) ||
2593 1043 : wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2594 1040 : wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2595 1037 : wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2596 1035 : wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2597 1033 : wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2598 1031 : wps_process_config_methods(wps, attr->config_methods) ||
2599 1029 : wps_process_wps_state(wps, attr->wps_state) ||
2600 1017 : wps_process_device_attrs(&wps->peer_dev, attr) ||
2601 1005 : wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2602 1003 : wps_process_assoc_state(wps, attr->assoc_state) ||
2603 1001 : wps_process_dev_password_id(wps, attr->dev_password_id) ||
2604 999 : wps_process_config_error(wps, attr->config_error) ||
2605 499 : wps_process_os_version(&wps->peer_dev, attr->os_version))
2606 26 : return WPS_FAILURE;
2607 :
2608 981 : if (wps->dev_pw_id < 0x10 &&
2609 707 : wps->dev_pw_id != DEV_PW_DEFAULT &&
2610 423 : wps->dev_pw_id != DEV_PW_P2PS_DEFAULT &&
2611 398 : wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2612 398 : wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2613 305 : wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
2614 : #ifdef CONFIG_WPS_NFC
2615 191 : wps->dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER &&
2616 : #endif /* CONFIG_WPS_NFC */
2617 170 : (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2618 85 : !wps->wps->registrar->pbc)) {
2619 2 : wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2620 2 : wps->dev_pw_id);
2621 2 : wps->state = SEND_M2D;
2622 2 : return WPS_CONTINUE;
2623 : }
2624 :
2625 : #ifdef CONFIG_WPS_NFC
2626 977 : if (wps->dev_pw_id >= 0x10 ||
2627 481 : wps->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
2628 : struct wps_nfc_pw_token *token;
2629 : const u8 *addr[1];
2630 : u8 hash[WPS_HASH_LEN];
2631 :
2632 72 : wpa_printf(MSG_DEBUG, "WPS: Searching for NFC token match for id=%d (ctx %p registrar %p)",
2633 72 : wps->dev_pw_id, wps->wps, wps->wps->registrar);
2634 72 : token = wps_get_nfc_pw_token(
2635 72 : &wps->wps->registrar->nfc_pw_tokens, wps->dev_pw_id);
2636 62 : if (token && token->peer_pk_hash_known) {
2637 : size_t len;
2638 :
2639 28 : wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2640 : "Password Token");
2641 28 : dl_list_del(&token->list);
2642 28 : wps->nfc_pw_token = token;
2643 :
2644 28 : addr[0] = attr->public_key;
2645 28 : len = attr->public_key_len;
2646 28 : sha256_vector(1, addr, &len, hash);
2647 28 : if (os_memcmp_const(hash,
2648 28 : wps->nfc_pw_token->pubkey_hash,
2649 : WPS_OOB_PUBKEY_HASH_LEN) != 0) {
2650 2 : wpa_printf(MSG_ERROR, "WPS: Public Key hash "
2651 : "mismatch");
2652 2 : wps->state = SEND_M2D;
2653 2 : wps->config_error =
2654 : WPS_CFG_PUBLIC_KEY_HASH_MISMATCH;
2655 2 : return WPS_CONTINUE;
2656 : }
2657 8 : } else if (token) {
2658 2 : wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2659 : "Password Token (no peer PK hash)");
2660 2 : wps->nfc_pw_token = token;
2661 9 : } else if (wps->dev_pw_id >= 0x10 &&
2662 5 : wps->wps->ap_nfc_dev_pw_id == wps->dev_pw_id &&
2663 2 : wps->wps->ap_nfc_dev_pw) {
2664 2 : wpa_printf(MSG_DEBUG, "WPS: Found match with own NFC Password Token");
2665 : }
2666 : }
2667 : #endif /* CONFIG_WPS_NFC */
2668 :
2669 494 : if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2670 161 : if ((wps->wps->registrar->force_pbc_overlap ||
2671 78 : wps_registrar_pbc_overlap(wps->wps->registrar,
2672 156 : wps->mac_addr_e, wps->uuid_e) ||
2673 84 : !wps_registrar_p2p_dev_addr_match(wps)) &&
2674 6 : !wps_registrar_skip_overlap(wps)) {
2675 5 : wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2676 : "negotiation");
2677 5 : wps->state = SEND_M2D;
2678 5 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2679 5 : wps_pbc_overlap_event(wps->wps);
2680 5 : wps_fail_event(wps->wps, WPS_M1,
2681 : WPS_CFG_MULTIPLE_PBC_DETECTED,
2682 5 : WPS_EI_NO_ERROR, wps->mac_addr_e);
2683 5 : wps->wps->registrar->force_pbc_overlap = 1;
2684 5 : return WPS_CONTINUE;
2685 : }
2686 78 : wps_registrar_add_pbc_session(wps->wps->registrar,
2687 78 : wps->mac_addr_e, wps->uuid_e);
2688 78 : wps->pbc = 1;
2689 : }
2690 :
2691 : #ifdef WPS_WORKAROUNDS
2692 : /*
2693 : * It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
2694 : * passphrase format. To avoid interop issues, force PSK format to be
2695 : * used.
2696 : */
2697 662 : if (!wps->use_psk_key &&
2698 346 : wps->peer_dev.manufacturer &&
2699 174 : os_strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
2700 2 : wps->peer_dev.model_name &&
2701 1 : os_strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
2702 1 : wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
2703 : "PSK format");
2704 1 : wps->use_psk_key = 1;
2705 : }
2706 : #endif /* WPS_WORKAROUNDS */
2707 :
2708 489 : wps->state = SEND_M2;
2709 489 : return WPS_CONTINUE;
2710 : }
2711 :
2712 :
2713 393 : static enum wps_process_res wps_process_m3(struct wps_data *wps,
2714 : const struct wpabuf *msg,
2715 : struct wps_parse_attr *attr)
2716 : {
2717 393 : wpa_printf(MSG_DEBUG, "WPS: Received M3");
2718 :
2719 393 : if (wps->state != RECV_M3) {
2720 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2721 1 : "receiving M3", wps->state);
2722 1 : wps->state = SEND_WSC_NACK;
2723 1 : return WPS_CONTINUE;
2724 : }
2725 :
2726 393 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2727 1 : !wps_registrar_skip_overlap(wps)) {
2728 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2729 : "session overlap");
2730 0 : wps->state = SEND_WSC_NACK;
2731 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2732 0 : return WPS_CONTINUE;
2733 : }
2734 :
2735 784 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2736 783 : wps_process_authenticator(wps, attr->authenticator, msg) ||
2737 781 : wps_process_e_hash1(wps, attr->e_hash1) ||
2738 390 : wps_process_e_hash2(wps, attr->e_hash2)) {
2739 3 : wps->state = SEND_WSC_NACK;
2740 3 : return WPS_CONTINUE;
2741 : }
2742 :
2743 389 : wps->state = SEND_M4;
2744 389 : return WPS_CONTINUE;
2745 : }
2746 :
2747 :
2748 372 : static enum wps_process_res wps_process_m5(struct wps_data *wps,
2749 : const struct wpabuf *msg,
2750 : struct wps_parse_attr *attr)
2751 : {
2752 : struct wpabuf *decrypted;
2753 : struct wps_parse_attr eattr;
2754 :
2755 372 : wpa_printf(MSG_DEBUG, "WPS: Received M5");
2756 :
2757 372 : if (wps->state != RECV_M5) {
2758 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2759 1 : "receiving M5", wps->state);
2760 1 : wps->state = SEND_WSC_NACK;
2761 1 : return WPS_CONTINUE;
2762 : }
2763 :
2764 372 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2765 1 : !wps_registrar_skip_overlap(wps)) {
2766 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2767 : "session overlap");
2768 0 : wps->state = SEND_WSC_NACK;
2769 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2770 0 : return WPS_CONTINUE;
2771 : }
2772 :
2773 742 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2774 371 : wps_process_authenticator(wps, attr->authenticator, msg)) {
2775 1 : wps->state = SEND_WSC_NACK;
2776 1 : return WPS_CONTINUE;
2777 : }
2778 :
2779 370 : decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2780 370 : attr->encr_settings_len);
2781 370 : if (decrypted == NULL) {
2782 1 : wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2783 : "Settings attribute");
2784 1 : wps->state = SEND_WSC_NACK;
2785 1 : return WPS_CONTINUE;
2786 : }
2787 :
2788 369 : if (wps_validate_m5_encr(decrypted, attr->version2 != NULL) < 0) {
2789 0 : wpabuf_clear_free(decrypted);
2790 0 : wps->state = SEND_WSC_NACK;
2791 0 : return WPS_CONTINUE;
2792 : }
2793 :
2794 369 : wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2795 : "attribute");
2796 738 : if (wps_parse_msg(decrypted, &eattr) < 0 ||
2797 738 : wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2798 369 : wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2799 2 : wpabuf_clear_free(decrypted);
2800 2 : wps->state = SEND_WSC_NACK;
2801 2 : return WPS_CONTINUE;
2802 : }
2803 367 : wpabuf_clear_free(decrypted);
2804 :
2805 367 : wps->state = SEND_M6;
2806 367 : return WPS_CONTINUE;
2807 : }
2808 :
2809 :
2810 37 : static void wps_sta_cred_cb(struct wps_data *wps)
2811 : {
2812 : /*
2813 : * Update credential to only include a single authentication and
2814 : * encryption type in case the AP configuration includes more than one
2815 : * option.
2816 : */
2817 37 : if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2818 34 : wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2819 3 : else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2820 1 : wps->cred.auth_type = WPS_AUTH_WPAPSK;
2821 37 : if (wps->cred.encr_type & WPS_ENCR_AES)
2822 34 : wps->cred.encr_type = WPS_ENCR_AES;
2823 3 : else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2824 1 : wps->cred.encr_type = WPS_ENCR_TKIP;
2825 37 : wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2826 : "AP configuration");
2827 37 : if (wps->wps->cred_cb)
2828 37 : wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2829 37 : }
2830 :
2831 :
2832 9 : static void wps_cred_update(struct wps_credential *dst,
2833 : struct wps_credential *src)
2834 : {
2835 9 : os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2836 9 : dst->ssid_len = src->ssid_len;
2837 9 : dst->auth_type = src->auth_type;
2838 9 : dst->encr_type = src->encr_type;
2839 9 : dst->key_idx = src->key_idx;
2840 9 : os_memcpy(dst->key, src->key, sizeof(dst->key));
2841 9 : dst->key_len = src->key_len;
2842 9 : }
2843 :
2844 :
2845 353 : static int wps_process_ap_settings_r(struct wps_data *wps,
2846 : struct wps_parse_attr *attr)
2847 : {
2848 : struct wpabuf *msg;
2849 :
2850 353 : if (wps->wps->ap || wps->er)
2851 305 : return 0;
2852 :
2853 : /* AP Settings Attributes in M7 when Enrollee is an AP */
2854 48 : if (wps_process_ap_settings(attr, &wps->cred) < 0)
2855 0 : return -1;
2856 :
2857 48 : wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2858 :
2859 48 : if (wps->new_ap_settings) {
2860 9 : wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2861 : "new settings");
2862 9 : wps_cred_update(&wps->cred, wps->new_ap_settings);
2863 9 : return 0;
2864 : } else {
2865 : /*
2866 : * Use the AP PIN only to receive the current AP settings, not
2867 : * to reconfigure the AP.
2868 : */
2869 :
2870 : /*
2871 : * Clear selected registrar here since we do not get to
2872 : * WSC_Done in this protocol run.
2873 : */
2874 39 : wps_registrar_pin_completed(wps->wps->registrar);
2875 :
2876 39 : msg = wps_build_ap_cred(wps);
2877 39 : if (msg == NULL)
2878 0 : return -1;
2879 39 : wps->cred.cred_attr = wpabuf_head(msg);
2880 39 : wps->cred.cred_attr_len = wpabuf_len(msg);
2881 :
2882 39 : if (wps->ap_settings_cb) {
2883 18 : wps->ap_settings_cb(wps->ap_settings_cb_ctx,
2884 9 : &wps->cred);
2885 9 : wpabuf_free(msg);
2886 9 : return 1;
2887 : }
2888 30 : wps_sta_cred_cb(wps);
2889 :
2890 30 : wps->cred.cred_attr = NULL;
2891 30 : wps->cred.cred_attr_len = 0;
2892 30 : wpabuf_free(msg);
2893 :
2894 30 : return 1;
2895 : }
2896 : }
2897 :
2898 :
2899 358 : static enum wps_process_res wps_process_m7(struct wps_data *wps,
2900 : const struct wpabuf *msg,
2901 : struct wps_parse_attr *attr)
2902 : {
2903 : struct wpabuf *decrypted;
2904 : struct wps_parse_attr eattr;
2905 :
2906 358 : wpa_printf(MSG_DEBUG, "WPS: Received M7");
2907 :
2908 358 : if (wps->state != RECV_M7) {
2909 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2910 1 : "receiving M7", wps->state);
2911 1 : wps->state = SEND_WSC_NACK;
2912 1 : return WPS_CONTINUE;
2913 : }
2914 :
2915 358 : if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2916 1 : !wps_registrar_skip_overlap(wps)) {
2917 0 : wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2918 : "session overlap");
2919 0 : wps->state = SEND_WSC_NACK;
2920 0 : wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2921 0 : return WPS_CONTINUE;
2922 : }
2923 :
2924 714 : if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2925 357 : wps_process_authenticator(wps, attr->authenticator, msg)) {
2926 1 : wps->state = SEND_WSC_NACK;
2927 1 : return WPS_CONTINUE;
2928 : }
2929 :
2930 356 : decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2931 356 : attr->encr_settings_len);
2932 356 : if (decrypted == NULL) {
2933 1 : wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt Encrypted "
2934 : "Settings attribute");
2935 1 : wps->state = SEND_WSC_NACK;
2936 1 : return WPS_CONTINUE;
2937 : }
2938 :
2939 355 : if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er,
2940 355 : attr->version2 != NULL) < 0) {
2941 0 : wpabuf_clear_free(decrypted);
2942 0 : wps->state = SEND_WSC_NACK;
2943 0 : return WPS_CONTINUE;
2944 : }
2945 :
2946 355 : wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2947 : "attribute");
2948 710 : if (wps_parse_msg(decrypted, &eattr) < 0 ||
2949 710 : wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2950 708 : wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2951 353 : wps_process_ap_settings_r(wps, &eattr)) {
2952 41 : wpabuf_clear_free(decrypted);
2953 41 : wps->state = SEND_WSC_NACK;
2954 41 : return WPS_CONTINUE;
2955 : }
2956 :
2957 314 : wpabuf_clear_free(decrypted);
2958 :
2959 314 : wps->state = SEND_M8;
2960 314 : return WPS_CONTINUE;
2961 : }
2962 :
2963 :
2964 1652 : static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2965 : const struct wpabuf *msg)
2966 : {
2967 : struct wps_parse_attr attr;
2968 1652 : enum wps_process_res ret = WPS_CONTINUE;
2969 :
2970 1652 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2971 :
2972 1652 : if (wps_parse_msg(msg, &attr) < 0)
2973 1 : return WPS_FAILURE;
2974 :
2975 1651 : if (attr.msg_type == NULL) {
2976 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2977 1 : wps->state = SEND_WSC_NACK;
2978 1 : return WPS_CONTINUE;
2979 : }
2980 :
2981 2775 : if (*attr.msg_type != WPS_M1 &&
2982 2250 : (attr.registrar_nonce == NULL ||
2983 1125 : os_memcmp(wps->nonce_r, attr.registrar_nonce,
2984 : WPS_NONCE_LEN) != 0)) {
2985 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2986 1 : return WPS_FAILURE;
2987 : }
2988 :
2989 1649 : switch (*attr.msg_type) {
2990 : case WPS_M1:
2991 525 : if (wps_validate_m1(msg) < 0)
2992 0 : return WPS_FAILURE;
2993 : #ifdef CONFIG_WPS_UPNP
2994 525 : if (wps->wps->wps_upnp && attr.mac_addr) {
2995 : /* Remove old pending messages when starting new run */
2996 13 : wps_free_pending_msgs(wps->wps->upnp_msgs);
2997 13 : wps->wps->upnp_msgs = NULL;
2998 :
2999 26 : upnp_wps_device_send_wlan_event(
3000 13 : wps->wps->wps_upnp, attr.mac_addr,
3001 : UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
3002 : }
3003 : #endif /* CONFIG_WPS_UPNP */
3004 525 : ret = wps_process_m1(wps, &attr);
3005 525 : break;
3006 : case WPS_M3:
3007 393 : if (wps_validate_m3(msg) < 0)
3008 0 : return WPS_FAILURE;
3009 393 : ret = wps_process_m3(wps, msg, &attr);
3010 393 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
3011 4 : wps_fail_event(wps->wps, WPS_M3, wps->config_error,
3012 4 : wps->error_indication, wps->mac_addr_e);
3013 393 : break;
3014 : case WPS_M5:
3015 372 : if (wps_validate_m5(msg) < 0)
3016 0 : return WPS_FAILURE;
3017 372 : ret = wps_process_m5(wps, msg, &attr);
3018 372 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
3019 5 : wps_fail_event(wps->wps, WPS_M5, wps->config_error,
3020 5 : wps->error_indication, wps->mac_addr_e);
3021 372 : break;
3022 : case WPS_M7:
3023 358 : if (wps_validate_m7(msg) < 0)
3024 0 : return WPS_FAILURE;
3025 358 : ret = wps_process_m7(wps, msg, &attr);
3026 358 : if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
3027 44 : wps_fail_event(wps->wps, WPS_M7, wps->config_error,
3028 44 : wps->error_indication, wps->mac_addr_e);
3029 358 : break;
3030 : default:
3031 1 : wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
3032 1 : *attr.msg_type);
3033 1 : return WPS_FAILURE;
3034 : }
3035 :
3036 1648 : if (ret == WPS_CONTINUE) {
3037 : /* Save a copy of the last message for Authenticator derivation
3038 : */
3039 1621 : wpabuf_free(wps->last_msg);
3040 1621 : wps->last_msg = wpabuf_dup(msg);
3041 : }
3042 :
3043 1648 : return ret;
3044 : }
3045 :
3046 :
3047 47 : static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
3048 : const struct wpabuf *msg)
3049 : {
3050 : struct wps_parse_attr attr;
3051 :
3052 47 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
3053 :
3054 47 : if (wps_parse_msg(msg, &attr) < 0)
3055 1 : return WPS_FAILURE;
3056 :
3057 46 : if (attr.msg_type == NULL) {
3058 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3059 1 : return WPS_FAILURE;
3060 : }
3061 :
3062 45 : if (*attr.msg_type != WPS_WSC_ACK) {
3063 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3064 1 : *attr.msg_type);
3065 1 : return WPS_FAILURE;
3066 : }
3067 :
3068 : #ifdef CONFIG_WPS_UPNP
3069 57 : if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
3070 13 : upnp_wps_subscribers(wps->wps->wps_upnp)) {
3071 13 : if (wps->wps->upnp_msgs)
3072 12 : return WPS_CONTINUE;
3073 1 : wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3074 : "external Registrar");
3075 1 : return WPS_PENDING;
3076 : }
3077 : #endif /* CONFIG_WPS_UPNP */
3078 :
3079 61 : if (attr.registrar_nonce == NULL ||
3080 30 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3081 : {
3082 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3083 1 : return WPS_FAILURE;
3084 : }
3085 :
3086 60 : if (attr.enrollee_nonce == NULL ||
3087 30 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3088 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3089 1 : return WPS_FAILURE;
3090 : }
3091 :
3092 29 : if (wps->state == RECV_M2D_ACK) {
3093 : #ifdef CONFIG_WPS_UPNP
3094 40 : if (wps->wps->wps_upnp &&
3095 12 : upnp_wps_subscribers(wps->wps->wps_upnp)) {
3096 12 : if (wps->wps->upnp_msgs)
3097 0 : return WPS_CONTINUE;
3098 12 : if (wps->ext_reg == 0)
3099 12 : wps->ext_reg = 1;
3100 12 : wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3101 : "external Registrar");
3102 12 : return WPS_PENDING;
3103 : }
3104 : #endif /* CONFIG_WPS_UPNP */
3105 :
3106 16 : wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
3107 : "terminate negotiation");
3108 : }
3109 :
3110 17 : return WPS_FAILURE;
3111 : }
3112 :
3113 :
3114 62 : static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
3115 : const struct wpabuf *msg)
3116 : {
3117 : struct wps_parse_attr attr;
3118 : int old_state;
3119 : u16 config_error;
3120 :
3121 62 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
3122 :
3123 62 : old_state = wps->state;
3124 62 : wps->state = SEND_WSC_NACK;
3125 :
3126 62 : if (wps_parse_msg(msg, &attr) < 0)
3127 1 : return WPS_FAILURE;
3128 :
3129 61 : if (attr.msg_type == NULL) {
3130 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3131 1 : return WPS_FAILURE;
3132 : }
3133 :
3134 60 : if (*attr.msg_type != WPS_WSC_NACK) {
3135 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3136 1 : *attr.msg_type);
3137 1 : return WPS_FAILURE;
3138 : }
3139 :
3140 : #ifdef CONFIG_WPS_UPNP
3141 59 : if (wps->wps->wps_upnp && wps->ext_reg) {
3142 1 : wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3143 : "Registrar terminated by the Enrollee");
3144 1 : return WPS_FAILURE;
3145 : }
3146 : #endif /* CONFIG_WPS_UPNP */
3147 :
3148 115 : if (attr.registrar_nonce == NULL ||
3149 57 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3150 : {
3151 6 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3152 6 : return WPS_FAILURE;
3153 : }
3154 :
3155 104 : if (attr.enrollee_nonce == NULL ||
3156 52 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3157 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3158 1 : return WPS_FAILURE;
3159 : }
3160 :
3161 51 : if (attr.config_error == NULL) {
3162 1 : wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
3163 : "in WSC_NACK");
3164 1 : return WPS_FAILURE;
3165 : }
3166 :
3167 50 : config_error = WPA_GET_BE16(attr.config_error);
3168 50 : wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
3169 : "Configuration Error %d", config_error);
3170 :
3171 50 : switch (old_state) {
3172 : case RECV_M3:
3173 14 : wps_fail_event(wps->wps, WPS_M2, config_error,
3174 14 : wps->error_indication, wps->mac_addr_e);
3175 14 : break;
3176 : case RECV_M5:
3177 13 : wps_fail_event(wps->wps, WPS_M4, config_error,
3178 13 : wps->error_indication, wps->mac_addr_e);
3179 13 : break;
3180 : case RECV_M7:
3181 6 : wps_fail_event(wps->wps, WPS_M6, config_error,
3182 6 : wps->error_indication, wps->mac_addr_e);
3183 6 : break;
3184 : case RECV_DONE:
3185 6 : wps_fail_event(wps->wps, WPS_M8, config_error,
3186 6 : wps->error_indication, wps->mac_addr_e);
3187 6 : break;
3188 : default:
3189 11 : break;
3190 : }
3191 :
3192 50 : return WPS_FAILURE;
3193 : }
3194 :
3195 :
3196 328 : static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
3197 : const struct wpabuf *msg)
3198 : {
3199 : struct wps_parse_attr attr;
3200 :
3201 328 : wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
3202 :
3203 339 : if (wps->state != RECV_DONE &&
3204 21 : (!wps->wps->wps_upnp || !wps->ext_reg)) {
3205 1 : wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
3206 1 : "receiving WSC_Done", wps->state);
3207 1 : return WPS_FAILURE;
3208 : }
3209 :
3210 327 : if (wps_parse_msg(msg, &attr) < 0)
3211 1 : return WPS_FAILURE;
3212 :
3213 326 : if (attr.msg_type == NULL) {
3214 1 : wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3215 1 : return WPS_FAILURE;
3216 : }
3217 :
3218 325 : if (*attr.msg_type != WPS_WSC_DONE) {
3219 1 : wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3220 1 : *attr.msg_type);
3221 1 : return WPS_FAILURE;
3222 : }
3223 :
3224 : #ifdef CONFIG_WPS_UPNP
3225 324 : if (wps->wps->wps_upnp && wps->ext_reg) {
3226 10 : wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3227 : "Registrar completed successfully");
3228 10 : wps_device_store(wps->wps->registrar, &wps->peer_dev,
3229 10 : wps->uuid_e);
3230 10 : return WPS_DONE;
3231 : }
3232 : #endif /* CONFIG_WPS_UPNP */
3233 :
3234 627 : if (attr.registrar_nonce == NULL ||
3235 313 : os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3236 : {
3237 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3238 1 : return WPS_FAILURE;
3239 : }
3240 :
3241 625 : if (attr.enrollee_nonce == NULL ||
3242 312 : os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3243 1 : wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3244 1 : return WPS_FAILURE;
3245 : }
3246 :
3247 312 : wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
3248 312 : wps_device_store(wps->wps->registrar, &wps->peer_dev,
3249 312 : wps->uuid_e);
3250 :
3251 318 : if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
3252 12 : wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
3253 : struct wps_credential cred;
3254 :
3255 6 : wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
3256 : "on first Enrollee connection");
3257 :
3258 6 : os_memset(&cred, 0, sizeof(cred));
3259 6 : os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
3260 6 : cred.ssid_len = wps->wps->ssid_len;
3261 6 : if (wps->wps->rf_band_cb(wps->wps->cb_ctx) == WPS_RF_60GHZ) {
3262 0 : cred.auth_type = WPS_AUTH_WPA2PSK;
3263 0 : cred.encr_type = WPS_ENCR_AES;
3264 : } else {
3265 6 : cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
3266 6 : cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
3267 : }
3268 6 : os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
3269 6 : cred.key_len = wps->new_psk_len;
3270 :
3271 6 : wps->wps->wps_state = WPS_STATE_CONFIGURED;
3272 12 : wpa_hexdump_ascii_key(MSG_DEBUG,
3273 : "WPS: Generated random passphrase",
3274 6 : wps->new_psk, wps->new_psk_len);
3275 6 : if (wps->wps->cred_cb)
3276 6 : wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
3277 :
3278 6 : os_free(wps->new_psk);
3279 6 : wps->new_psk = NULL;
3280 : }
3281 :
3282 312 : if (!wps->wps->ap && !wps->er)
3283 7 : wps_sta_cred_cb(wps);
3284 :
3285 312 : if (wps->new_psk) {
3286 24 : if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
3287 12 : wps->p2p_dev_addr, wps->new_psk,
3288 : wps->new_psk_len)) {
3289 2 : wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
3290 : "new PSK");
3291 : }
3292 12 : os_free(wps->new_psk);
3293 12 : wps->new_psk = NULL;
3294 : }
3295 :
3296 624 : wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e,
3297 312 : wps->dev_password, wps->dev_password_len);
3298 :
3299 312 : if (wps->pbc) {
3300 53 : wps_registrar_remove_pbc_session(wps->wps->registrar,
3301 53 : wps->uuid_e,
3302 53 : wps->p2p_dev_addr);
3303 53 : wps_registrar_pbc_completed(wps->wps->registrar);
3304 : #ifdef WPS_WORKAROUNDS
3305 53 : os_get_reltime(&wps->wps->registrar->pbc_ignore_start);
3306 : #endif /* WPS_WORKAROUNDS */
3307 53 : os_memcpy(wps->wps->registrar->pbc_ignore_uuid, wps->uuid_e,
3308 : WPS_UUID_LEN);
3309 : } else {
3310 259 : wps_registrar_pin_completed(wps->wps->registrar);
3311 : }
3312 : /* TODO: maintain AuthorizedMACs somewhere separately for each ER and
3313 : * merge them into APs own list.. */
3314 :
3315 312 : wps_success_event(wps->wps, wps->mac_addr_e);
3316 :
3317 312 : return WPS_DONE;
3318 : }
3319 :
3320 :
3321 2143 : enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
3322 : enum wsc_op_code op_code,
3323 : const struct wpabuf *msg)
3324 : {
3325 : enum wps_process_res ret;
3326 :
3327 2143 : wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
3328 : "op_code=%d)",
3329 : (unsigned long) wpabuf_len(msg), op_code);
3330 :
3331 : #ifdef CONFIG_WPS_UPNP
3332 2143 : if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
3333 : struct wps_parse_attr attr;
3334 18 : if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
3335 9 : *attr.msg_type == WPS_M3)
3336 9 : wps->ext_reg = 2; /* past M2/M2D phase */
3337 : }
3338 2143 : if (wps->ext_reg > 1)
3339 63 : wps_registrar_free_pending_m2(wps->wps);
3340 2221 : if (wps->wps->wps_upnp && wps->ext_reg &&
3341 117 : wps->wps->upnp_msgs == NULL &&
3342 12 : (op_code == WSC_MSG || op_code == WSC_Done || op_code == WSC_NACK))
3343 11 : {
3344 : struct wps_parse_attr attr;
3345 : int type;
3346 38 : if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
3347 0 : type = -1;
3348 : else
3349 38 : type = *attr.msg_type;
3350 38 : wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
3351 : " to external Registrar for processing", type);
3352 38 : upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
3353 38 : wps->mac_addr_e,
3354 : UPNP_WPS_WLANEVENT_TYPE_EAP,
3355 : msg);
3356 38 : if (op_code == WSC_MSG)
3357 27 : return WPS_PENDING;
3358 2105 : } else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
3359 27 : wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
3360 : "external Registrar");
3361 27 : return WPS_CONTINUE;
3362 : }
3363 : #endif /* CONFIG_WPS_UPNP */
3364 :
3365 2089 : switch (op_code) {
3366 : case WSC_MSG:
3367 1652 : return wps_process_wsc_msg(wps, msg);
3368 : case WSC_ACK:
3369 47 : if (wps_validate_wsc_ack(msg) < 0)
3370 0 : return WPS_FAILURE;
3371 47 : return wps_process_wsc_ack(wps, msg);
3372 : case WSC_NACK:
3373 62 : if (wps_validate_wsc_nack(msg) < 0)
3374 0 : return WPS_FAILURE;
3375 62 : return wps_process_wsc_nack(wps, msg);
3376 : case WSC_Done:
3377 328 : if (wps_validate_wsc_done(msg) < 0)
3378 0 : return WPS_FAILURE;
3379 328 : ret = wps_process_wsc_done(wps, msg);
3380 328 : if (ret == WPS_FAILURE) {
3381 6 : wps->state = SEND_WSC_NACK;
3382 12 : wps_fail_event(wps->wps, WPS_WSC_DONE,
3383 6 : wps->config_error,
3384 6 : wps->error_indication, wps->mac_addr_e);
3385 : }
3386 328 : return ret;
3387 : default:
3388 0 : wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
3389 0 : return WPS_FAILURE;
3390 : }
3391 : }
3392 :
3393 :
3394 31 : int wps_registrar_update_ie(struct wps_registrar *reg)
3395 : {
3396 31 : return wps_set_ie(reg);
3397 : }
3398 :
3399 :
3400 6 : static void wps_registrar_set_selected_timeout(void *eloop_ctx,
3401 : void *timeout_ctx)
3402 : {
3403 6 : struct wps_registrar *reg = eloop_ctx;
3404 :
3405 6 : wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
3406 : "unselect internal Registrar");
3407 6 : reg->selected_registrar = 0;
3408 6 : reg->pbc = 0;
3409 6 : wps_registrar_selected_registrar_changed(reg, 0);
3410 6 : }
3411 :
3412 :
3413 : #ifdef CONFIG_WPS_UPNP
3414 22 : static void wps_registrar_sel_reg_add(struct wps_registrar *reg,
3415 : struct subscription *s)
3416 : {
3417 : int i, j;
3418 44 : wpa_printf(MSG_DEBUG, "WPS: External Registrar selected (dev_pw_id=%d "
3419 : "config_methods=0x%x)",
3420 44 : s->dev_password_id, s->config_methods);
3421 22 : reg->sel_reg_union = 1;
3422 22 : if (reg->sel_reg_dev_password_id_override != DEV_PW_PUSHBUTTON)
3423 22 : reg->sel_reg_dev_password_id_override = s->dev_password_id;
3424 22 : if (reg->sel_reg_config_methods_override == -1)
3425 22 : reg->sel_reg_config_methods_override = 0;
3426 22 : reg->sel_reg_config_methods_override |= s->config_methods;
3427 22 : for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
3428 22 : if (is_zero_ether_addr(reg->authorized_macs_union[i]))
3429 22 : break;
3430 73 : for (j = 0; i < WPS_MAX_AUTHORIZED_MACS && j < WPS_MAX_AUTHORIZED_MACS;
3431 29 : j++) {
3432 50 : if (is_zero_ether_addr(s->authorized_macs[j]))
3433 21 : break;
3434 174 : wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC into union: "
3435 174 : MACSTR, MAC2STR(s->authorized_macs[j]));
3436 29 : os_memcpy(reg->authorized_macs_union[i],
3437 : s->authorized_macs[j], ETH_ALEN);
3438 29 : i++;
3439 : }
3440 22 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union",
3441 22 : (u8 *) reg->authorized_macs_union,
3442 : sizeof(reg->authorized_macs_union));
3443 22 : }
3444 : #endif /* CONFIG_WPS_UPNP */
3445 :
3446 :
3447 1327 : static void wps_registrar_sel_reg_union(struct wps_registrar *reg)
3448 : {
3449 : #ifdef CONFIG_WPS_UPNP
3450 : struct subscription *s;
3451 :
3452 1327 : if (reg->wps->wps_upnp == NULL)
3453 2571 : return;
3454 :
3455 159 : dl_list_for_each(s, ®->wps->wps_upnp->subscriptions,
3456 : struct subscription, list) {
3457 : struct subscr_addr *sa;
3458 76 : sa = dl_list_first(&s->addr_list, struct subscr_addr, list);
3459 76 : if (sa) {
3460 76 : wpa_printf(MSG_DEBUG, "WPS: External Registrar %s:%d",
3461 : inet_ntoa(sa->saddr.sin_addr),
3462 76 : ntohs(sa->saddr.sin_port));
3463 : }
3464 76 : if (s->selected_registrar)
3465 22 : wps_registrar_sel_reg_add(reg, s);
3466 : else
3467 54 : wpa_printf(MSG_DEBUG, "WPS: External Registrar not "
3468 : "selected");
3469 : }
3470 : #endif /* CONFIG_WPS_UPNP */
3471 : }
3472 :
3473 :
3474 : /**
3475 : * wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
3476 : * @reg: Registrar data from wps_registrar_init()
3477 : *
3478 : * This function is called when selected registrar state changes, e.g., when an
3479 : * AP receives a SetSelectedRegistrar UPnP message.
3480 : */
3481 1327 : void wps_registrar_selected_registrar_changed(struct wps_registrar *reg,
3482 : u16 dev_pw_id)
3483 : {
3484 1327 : wpa_printf(MSG_DEBUG, "WPS: Selected registrar information changed");
3485 :
3486 1327 : reg->sel_reg_union = reg->selected_registrar;
3487 1327 : reg->sel_reg_dev_password_id_override = -1;
3488 1327 : reg->sel_reg_config_methods_override = -1;
3489 1327 : os_memcpy(reg->authorized_macs_union, reg->authorized_macs,
3490 : WPS_MAX_AUTHORIZED_MACS * ETH_ALEN);
3491 1327 : wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union (start with own)",
3492 1327 : (u8 *) reg->authorized_macs_union,
3493 : sizeof(reg->authorized_macs_union));
3494 1327 : if (reg->selected_registrar) {
3495 : u16 methods;
3496 :
3497 850 : methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
3498 850 : methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
3499 : WPS_CONFIG_PHY_PUSHBUTTON);
3500 850 : if (reg->pbc) {
3501 124 : reg->sel_reg_dev_password_id_override =
3502 : DEV_PW_PUSHBUTTON;
3503 124 : wps_set_pushbutton(&methods, reg->wps->config_methods);
3504 726 : } else if (dev_pw_id)
3505 30 : reg->sel_reg_dev_password_id_override = dev_pw_id;
3506 850 : wpa_printf(MSG_DEBUG, "WPS: Internal Registrar selected "
3507 : "(pbc=%d)", reg->pbc);
3508 850 : reg->sel_reg_config_methods_override = methods;
3509 : } else
3510 477 : wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
3511 :
3512 1327 : wps_registrar_sel_reg_union(reg);
3513 :
3514 1327 : wps_set_ie(reg);
3515 1327 : wps_cb_set_sel_reg(reg);
3516 1327 : }
3517 :
3518 :
3519 7 : int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
3520 : char *buf, size_t buflen)
3521 : {
3522 : struct wps_registrar_device *d;
3523 7 : int len = 0, ret;
3524 : char uuid[40];
3525 : char devtype[WPS_DEV_TYPE_BUFSIZE];
3526 :
3527 7 : d = wps_device_get(reg, addr);
3528 7 : if (d == NULL)
3529 3 : return 0;
3530 4 : if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
3531 0 : return 0;
3532 :
3533 24 : ret = os_snprintf(buf + len, buflen - len,
3534 : "wpsUuid=%s\n"
3535 : "wpsPrimaryDeviceType=%s\n"
3536 : "wpsDeviceName=%s\n"
3537 : "wpsManufacturer=%s\n"
3538 : "wpsModelName=%s\n"
3539 : "wpsModelNumber=%s\n"
3540 : "wpsSerialNumber=%s\n",
3541 : uuid,
3542 4 : wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
3543 : sizeof(devtype)),
3544 4 : d->dev.device_name ? d->dev.device_name : "",
3545 4 : d->dev.manufacturer ? d->dev.manufacturer : "",
3546 4 : d->dev.model_name ? d->dev.model_name : "",
3547 4 : d->dev.model_number ? d->dev.model_number : "",
3548 4 : d->dev.serial_number ? d->dev.serial_number : "");
3549 4 : if (os_snprintf_error(buflen - len, ret))
3550 0 : return len;
3551 4 : len += ret;
3552 :
3553 4 : return len;
3554 : }
3555 :
3556 :
3557 4 : int wps_registrar_config_ap(struct wps_registrar *reg,
3558 : struct wps_credential *cred)
3559 : {
3560 4 : wpa_printf(MSG_DEBUG, "WPS: encr_type=0x%x", cred->encr_type);
3561 4 : if (!(cred->encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP |
3562 : WPS_ENCR_AES))) {
3563 0 : if (cred->encr_type & WPS_ENCR_WEP) {
3564 0 : wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
3565 : "due to WEP configuration");
3566 0 : return -1;
3567 : }
3568 :
3569 0 : wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
3570 0 : "invalid encr_type 0x%x", cred->encr_type);
3571 0 : return -1;
3572 : }
3573 :
3574 4 : if ((cred->encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
3575 : WPS_ENCR_TKIP) {
3576 0 : wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
3577 : "TKIP+AES");
3578 0 : cred->encr_type |= WPS_ENCR_AES;
3579 : }
3580 :
3581 4 : if ((cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
3582 : WPS_AUTH_WPAPSK) {
3583 0 : wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
3584 : "WPAPSK+WPA2PSK");
3585 0 : cred->auth_type |= WPS_AUTH_WPA2PSK;
3586 : }
3587 :
3588 4 : if (reg->wps->cred_cb)
3589 4 : return reg->wps->cred_cb(reg->wps->cb_ctx, cred);
3590 :
3591 0 : return -1;
3592 : }
3593 :
3594 :
3595 : #ifdef CONFIG_WPS_NFC
3596 :
3597 30 : int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
3598 : const u8 *pubkey_hash, u16 pw_id,
3599 : const u8 *dev_pw, size_t dev_pw_len,
3600 : int pk_hash_provided_oob)
3601 : {
3602 : struct wps_nfc_pw_token *token;
3603 :
3604 30 : if (dev_pw_len > WPS_OOB_DEVICE_PASSWORD_LEN)
3605 0 : return -1;
3606 :
3607 30 : if (pw_id == DEV_PW_NFC_CONNECTION_HANDOVER &&
3608 18 : (pubkey_hash == NULL || !pk_hash_provided_oob)) {
3609 0 : wpa_printf(MSG_DEBUG, "WPS: Unexpected NFC Password Token "
3610 : "addition - missing public key hash");
3611 0 : return -1;
3612 : }
3613 :
3614 30 : wps_free_nfc_pw_tokens(®->nfc_pw_tokens, pw_id);
3615 :
3616 30 : token = os_zalloc(sizeof(*token));
3617 30 : if (token == NULL)
3618 0 : return -1;
3619 :
3620 30 : token->peer_pk_hash_known = pubkey_hash != NULL;
3621 30 : if (pubkey_hash)
3622 28 : os_memcpy(token->pubkey_hash, pubkey_hash,
3623 : WPS_OOB_PUBKEY_HASH_LEN);
3624 30 : token->pw_id = pw_id;
3625 30 : token->pk_hash_provided_oob = pk_hash_provided_oob;
3626 30 : if (dev_pw) {
3627 12 : wpa_snprintf_hex_uppercase((char *) token->dev_pw,
3628 : sizeof(token->dev_pw),
3629 : dev_pw, dev_pw_len);
3630 12 : token->dev_pw_len = dev_pw_len * 2;
3631 : }
3632 :
3633 30 : dl_list_add(®->nfc_pw_tokens, &token->list);
3634 :
3635 30 : reg->selected_registrar = 1;
3636 30 : reg->pbc = 0;
3637 30 : wps_registrar_add_authorized_mac(reg,
3638 : (u8 *) "\xff\xff\xff\xff\xff\xff");
3639 30 : wps_registrar_selected_registrar_changed(reg, pw_id);
3640 30 : eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
3641 30 : eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
3642 : wps_registrar_set_selected_timeout,
3643 : reg, NULL);
3644 :
3645 30 : wpa_printf(MSG_DEBUG, "WPS: Added NFC Device Password %u to Registrar",
3646 : pw_id);
3647 :
3648 30 : return 0;
3649 : }
3650 :
3651 :
3652 4 : int wps_registrar_add_nfc_password_token(struct wps_registrar *reg,
3653 : const u8 *oob_dev_pw,
3654 : size_t oob_dev_pw_len)
3655 : {
3656 : const u8 *pos, *hash, *dev_pw;
3657 : u16 id;
3658 : size_t dev_pw_len;
3659 :
3660 4 : if (oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2 ||
3661 : oob_dev_pw_len > WPS_OOB_PUBKEY_HASH_LEN + 2 +
3662 : WPS_OOB_DEVICE_PASSWORD_LEN)
3663 0 : return -1;
3664 :
3665 4 : hash = oob_dev_pw;
3666 4 : pos = oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN;
3667 4 : id = WPA_GET_BE16(pos);
3668 4 : dev_pw = pos + 2;
3669 4 : dev_pw_len = oob_dev_pw + oob_dev_pw_len - dev_pw;
3670 :
3671 4 : wpa_printf(MSG_DEBUG, "WPS: Add NFC Password Token for Password ID %u",
3672 : id);
3673 :
3674 4 : wpa_hexdump(MSG_DEBUG, "WPS: Public Key Hash",
3675 : hash, WPS_OOB_PUBKEY_HASH_LEN);
3676 4 : wpa_hexdump_key(MSG_DEBUG, "WPS: Device Password", dev_pw, dev_pw_len);
3677 :
3678 4 : return wps_registrar_add_nfc_pw_token(reg, hash, id, dev_pw,
3679 : dev_pw_len, 0);
3680 : }
3681 :
3682 :
3683 30 : void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
3684 : struct wps_nfc_pw_token *token)
3685 : {
3686 30 : wps_registrar_remove_authorized_mac(reg,
3687 : (u8 *) "\xff\xff\xff\xff\xff\xff");
3688 30 : wps_registrar_selected_registrar_changed(reg, 0);
3689 :
3690 : /*
3691 : * Free the NFC password token if it was used only for a single protocol
3692 : * run. The static handover case uses the same password token multiple
3693 : * times, so do not free that case here.
3694 : */
3695 30 : if (token->peer_pk_hash_known)
3696 28 : os_free(token);
3697 30 : }
3698 :
3699 : #endif /* CONFIG_WPS_NFC */
|
