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Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * Wi-Fi Protected Setup - Registrar
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07003 * Copyright (c) 2008-2013, Jouni Malinen <j@w1.fi>
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004 *
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08005 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07007 */
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
Dmitry Shmidt04949592012-07-19 12:16:46 -070029#ifdef CONFIG_WPS_NFC
30
31struct wps_nfc_pw_token {
32 struct dl_list list;
33 u8 pubkey_hash[WPS_OOB_PUBKEY_HASH_LEN];
Dmitry Shmidtcf32e602014-01-28 10:57:39 -080034 unsigned int peer_pk_hash_known:1;
Dmitry Shmidt04949592012-07-19 12:16:46 -070035 u16 pw_id;
Dmitry Shmidt33e38bf2013-02-27 12:56:00 -080036 u8 dev_pw[WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1];
Dmitry Shmidt04949592012-07-19 12:16:46 -070037 size_t dev_pw_len;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -080038 int pk_hash_provided_oob; /* whether own PK hash was provided OOB */
Dmitry Shmidt04949592012-07-19 12:16:46 -070039};
40
41
42static void wps_remove_nfc_pw_token(struct wps_nfc_pw_token *token)
43{
44 dl_list_del(&token->list);
Dmitry Shmidtc2817022014-07-02 10:32:10 -070045 bin_clear_free(token, sizeof(*token));
Dmitry Shmidt04949592012-07-19 12:16:46 -070046}
47
48
49static void wps_free_nfc_pw_tokens(struct dl_list *tokens, u16 pw_id)
50{
51 struct wps_nfc_pw_token *token, *prev;
52 dl_list_for_each_safe(token, prev, tokens, struct wps_nfc_pw_token,
53 list) {
54 if (pw_id == 0 || pw_id == token->pw_id)
55 wps_remove_nfc_pw_token(token);
56 }
57}
58
59
60static 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 dl_list_for_each(token, tokens, struct wps_nfc_pw_token, list) {
65 if (pw_id == token->pw_id)
66 return token;
67 }
68 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
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070078struct 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;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080087 struct os_reltime expiration;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070088 u8 enrollee_addr[ETH_ALEN];
89};
90
91
92static void wps_free_pin(struct wps_uuid_pin *pin)
93{
Dmitry Shmidtc2817022014-07-02 10:32:10 -070094 bin_clear_free(pin->pin, pin->pin_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070095 os_free(pin);
96}
97
98
99static void wps_remove_pin(struct wps_uuid_pin *pin)
100{
101 dl_list_del(&pin->list);
102 wps_free_pin(pin);
103}
104
105
106static void wps_free_pins(struct dl_list *pins)
107{
108 struct wps_uuid_pin *pin, *prev;
109 dl_list_for_each_safe(pin, prev, pins, struct wps_uuid_pin, list)
110 wps_remove_pin(pin);
111}
112
113
114struct wps_pbc_session {
115 struct wps_pbc_session *next;
116 u8 addr[ETH_ALEN];
117 u8 uuid_e[WPS_UUID_LEN];
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800118 struct os_reltime timestamp;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700119};
120
121
122static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
123{
124 struct wps_pbc_session *prev;
125
126 while (pbc) {
127 prev = pbc;
128 pbc = pbc->next;
129 os_free(prev);
130 }
131}
132
133
134struct wps_registrar_device {
135 struct wps_registrar_device *next;
136 struct wps_device_data dev;
137 u8 uuid[WPS_UUID_LEN];
138};
139
140
141struct wps_registrar {
142 struct wps_context *wps;
143
144 int pbc;
145 int selected_registrar;
146
Dmitry Shmidt391c59f2013-09-03 12:16:28 -0700147 int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *p2p_dev_addr,
148 const u8 *psk, size_t psk_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700149 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,
Dmitry Shmidt04949592012-07-19 12:16:46 -0700154 const u8 *uuid_e, const u8 *dev_pw,
155 size_t dev_pw_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700156 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;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700165 struct dl_list nfc_pw_tokens;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700166 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;
Dmitry Shmidt391c59f2013-09-03 12:16:28 -0700176 int force_per_enrollee_psk;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700177
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];
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800186
187 u8 pbc_ignore_uuid[WPS_UUID_LEN];
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800188#ifdef WPS_WORKAROUNDS
189 struct os_reltime pbc_ignore_start;
190#endif /* WPS_WORKAROUNDS */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700191};
192
193
194static int wps_set_ie(struct wps_registrar *reg);
195static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx);
196static void wps_registrar_set_selected_timeout(void *eloop_ctx,
197 void *timeout_ctx);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800198static void wps_registrar_remove_pin(struct wps_registrar *reg,
199 struct wps_uuid_pin *pin);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700200
201
202static void wps_registrar_add_authorized_mac(struct wps_registrar *reg,
203 const u8 *addr)
204{
205 int i;
206 wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC " MACSTR,
207 MAC2STR(addr));
208 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
209 if (os_memcmp(reg->authorized_macs[i], addr, ETH_ALEN) == 0) {
210 wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was "
211 "already in the list");
212 return; /* already in list */
213 }
214 for (i = WPS_MAX_AUTHORIZED_MACS - 1; i > 0; i--)
215 os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i - 1],
216 ETH_ALEN);
217 os_memcpy(reg->authorized_macs[0], addr, ETH_ALEN);
218 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
219 (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
220}
221
222
223static void wps_registrar_remove_authorized_mac(struct wps_registrar *reg,
224 const u8 *addr)
225{
226 int i;
227 wpa_printf(MSG_DEBUG, "WPS: Remove authorized MAC " MACSTR,
228 MAC2STR(addr));
229 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++) {
230 if (os_memcmp(reg->authorized_macs, addr, ETH_ALEN) == 0)
231 break;
232 }
233 if (i == WPS_MAX_AUTHORIZED_MACS) {
234 wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was not in the "
235 "list");
236 return; /* not in the list */
237 }
238 for (; i + 1 < WPS_MAX_AUTHORIZED_MACS; i++)
239 os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i + 1],
240 ETH_ALEN);
241 os_memset(reg->authorized_macs[WPS_MAX_AUTHORIZED_MACS - 1], 0,
242 ETH_ALEN);
243 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
244 (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
245}
246
247
248static void wps_free_devices(struct wps_registrar_device *dev)
249{
250 struct wps_registrar_device *prev;
251
252 while (dev) {
253 prev = dev;
254 dev = dev->next;
255 wps_device_data_free(&prev->dev);
256 os_free(prev);
257 }
258}
259
260
261static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
262 const u8 *addr)
263{
264 struct wps_registrar_device *dev;
265
266 for (dev = reg->devices; dev; dev = dev->next) {
267 if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
268 return dev;
269 }
270 return NULL;
271}
272
273
274static void wps_device_clone_data(struct wps_device_data *dst,
275 struct wps_device_data *src)
276{
277 os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
278 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 WPS_STRDUP(device_name);
285 WPS_STRDUP(manufacturer);
286 WPS_STRDUP(model_name);
287 WPS_STRDUP(model_number);
288 WPS_STRDUP(serial_number);
289#undef WPS_STRDUP
290}
291
292
293int 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 d = wps_device_get(reg, dev->mac_addr);
299 if (d == NULL) {
300 d = os_zalloc(sizeof(*d));
301 if (d == NULL)
302 return -1;
303 d->next = reg->devices;
304 reg->devices = d;
305 }
306
307 wps_device_clone_data(&d->dev, dev);
308 os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
309
310 return 0;
311}
312
313
314static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
315 const u8 *addr, const u8 *uuid_e)
316{
317 struct wps_pbc_session *pbc, *prev = NULL;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800318 struct os_reltime now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700319
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800320 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700321
322 pbc = reg->pbc_sessions;
323 while (pbc) {
324 if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
325 os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
326 if (prev)
327 prev->next = pbc->next;
328 else
329 reg->pbc_sessions = pbc->next;
330 break;
331 }
332 prev = pbc;
333 pbc = pbc->next;
334 }
335
336 if (!pbc) {
337 pbc = os_zalloc(sizeof(*pbc));
338 if (pbc == NULL)
339 return;
340 os_memcpy(pbc->addr, addr, ETH_ALEN);
341 if (uuid_e)
342 os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
343 }
344
345 pbc->next = reg->pbc_sessions;
346 reg->pbc_sessions = pbc;
347 pbc->timestamp = now;
348
349 /* remove entries that have timed out */
350 prev = pbc;
351 pbc = pbc->next;
352
353 while (pbc) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800354 if (os_reltime_expired(&now, &pbc->timestamp,
355 WPS_PBC_WALK_TIME)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700356 prev->next = NULL;
357 wps_free_pbc_sessions(pbc);
358 break;
359 }
360 prev = pbc;
361 pbc = pbc->next;
362 }
363}
364
365
366static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800367 const u8 *uuid_e,
368 const u8 *p2p_dev_addr)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700369{
370 struct wps_pbc_session *pbc, *prev = NULL, *tmp;
371
372 pbc = reg->pbc_sessions;
373 while (pbc) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800374 if (os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0 ||
375 (p2p_dev_addr && !is_zero_ether_addr(reg->p2p_dev_addr) &&
376 os_memcmp(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
377 0)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700378 if (prev)
379 prev->next = pbc->next;
380 else
381 reg->pbc_sessions = pbc->next;
382 tmp = pbc;
383 pbc = pbc->next;
384 wpa_printf(MSG_DEBUG, "WPS: Removing PBC session for "
385 "addr=" MACSTR, MAC2STR(tmp->addr));
386 wpa_hexdump(MSG_DEBUG, "WPS: Removed UUID-E",
387 tmp->uuid_e, WPS_UUID_LEN);
388 os_free(tmp);
389 continue;
390 }
391 prev = pbc;
392 pbc = pbc->next;
393 }
394}
395
396
397int wps_registrar_pbc_overlap(struct wps_registrar *reg,
398 const u8 *addr, const u8 *uuid_e)
399{
400 int count = 0;
401 struct wps_pbc_session *pbc;
402 struct wps_pbc_session *first = NULL;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800403 struct os_reltime now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700404
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800405 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700406
407 wpa_printf(MSG_DEBUG, "WPS: Checking active PBC sessions for overlap");
408
409 if (uuid_e) {
410 wpa_printf(MSG_DEBUG, "WPS: Add one for the requested UUID");
411 wpa_hexdump(MSG_DEBUG, "WPS: Requested UUID",
412 uuid_e, WPS_UUID_LEN);
413 count++;
414 }
415
416 for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
417 wpa_printf(MSG_DEBUG, "WPS: Consider PBC session with " MACSTR,
418 MAC2STR(pbc->addr));
419 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E",
420 pbc->uuid_e, WPS_UUID_LEN);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800421 if (os_reltime_expired(&now, &pbc->timestamp,
422 WPS_PBC_WALK_TIME)) {
423 wpa_printf(MSG_DEBUG, "WPS: PBC walk time has expired");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700424 break;
425 }
426 if (first &&
427 os_memcmp(pbc->uuid_e, first->uuid_e, WPS_UUID_LEN) == 0) {
428 wpa_printf(MSG_DEBUG, "WPS: Same Enrollee");
429 continue; /* same Enrollee */
430 }
431 if (uuid_e == NULL ||
432 os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN)) {
433 wpa_printf(MSG_DEBUG, "WPS: New Enrollee");
434 count++;
435 }
436 if (first == NULL)
437 first = pbc;
438 }
439
440 wpa_printf(MSG_DEBUG, "WPS: %u active PBC session(s) found", count);
441
442 return count > 1 ? 1 : 0;
443}
444
445
446static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
447{
448 wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
449 wps->wps_state);
450 wpabuf_put_be16(msg, ATTR_WPS_STATE);
451 wpabuf_put_be16(msg, 1);
452 wpabuf_put_u8(msg, wps->wps_state);
453 return 0;
454}
455
456
457#ifdef CONFIG_WPS_UPNP
458static void wps_registrar_free_pending_m2(struct wps_context *wps)
459{
460 struct upnp_pending_message *p, *p2, *prev = NULL;
461 p = wps->upnp_msgs;
462 while (p) {
463 if (p->type == WPS_M2 || p->type == WPS_M2D) {
464 if (prev == NULL)
465 wps->upnp_msgs = p->next;
466 else
467 prev->next = p->next;
468 wpa_printf(MSG_DEBUG, "WPS UPnP: Drop pending M2/M2D");
469 p2 = p;
470 p = p->next;
471 wpabuf_free(p2->msg);
472 os_free(p2);
473 continue;
474 }
475 prev = p;
476 p = p->next;
477 }
478}
479#endif /* CONFIG_WPS_UPNP */
480
481
482static int wps_build_ap_setup_locked(struct wps_context *wps,
483 struct wpabuf *msg)
484{
485 if (wps->ap_setup_locked && wps->ap_setup_locked != 2) {
486 wpa_printf(MSG_DEBUG, "WPS: * AP Setup Locked");
487 wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
488 wpabuf_put_be16(msg, 1);
489 wpabuf_put_u8(msg, 1);
490 }
491 return 0;
492}
493
494
495static int wps_build_selected_registrar(struct wps_registrar *reg,
496 struct wpabuf *msg)
497{
498 if (!reg->sel_reg_union)
499 return 0;
500 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
501 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
502 wpabuf_put_be16(msg, 1);
503 wpabuf_put_u8(msg, 1);
504 return 0;
505}
506
507
508static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
509 struct wpabuf *msg)
510{
511 u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
512 if (!reg->sel_reg_union)
513 return 0;
514 if (reg->sel_reg_dev_password_id_override >= 0)
515 id = reg->sel_reg_dev_password_id_override;
516 wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
517 wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
518 wpabuf_put_be16(msg, 2);
519 wpabuf_put_be16(msg, id);
520 return 0;
521}
522
523
524static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
525 struct wpabuf *msg)
526{
527 u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
528 if (!reg->sel_reg_union)
529 return 0;
530 if (reg->sel_reg_dev_password_id_override >= 0)
531 id = reg->sel_reg_dev_password_id_override;
532 if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
533 return 0;
534 return wps_build_uuid_e(msg, reg->wps->uuid);
535}
536
537
538static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
539{
540 *methods |= WPS_CONFIG_PUSHBUTTON;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700541 if ((conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON) ==
542 WPS_CONFIG_VIRT_PUSHBUTTON)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700543 *methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700544 if ((conf_methods & WPS_CONFIG_PHY_PUSHBUTTON) ==
545 WPS_CONFIG_PHY_PUSHBUTTON)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700546 *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700547 if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
548 WPS_CONFIG_VIRT_PUSHBUTTON &&
549 (*methods & WPS_CONFIG_PHY_PUSHBUTTON) !=
550 WPS_CONFIG_PHY_PUSHBUTTON) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700551 /*
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 *methods |= WPS_CONFIG_PHY_PUSHBUTTON;
557 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700558}
559
560
561static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
562 struct wpabuf *msg)
563{
564 u16 methods;
565 if (!reg->sel_reg_union)
566 return 0;
567 methods = reg->wps->config_methods;
568 methods &= ~WPS_CONFIG_PUSHBUTTON;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700569 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
570 WPS_CONFIG_PHY_PUSHBUTTON);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700571 if (reg->pbc)
572 wps_set_pushbutton(&methods, reg->wps->config_methods);
573 if (reg->sel_reg_config_methods_override >= 0)
574 methods = reg->sel_reg_config_methods_override;
575 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
576 methods);
577 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
578 wpabuf_put_be16(msg, 2);
579 wpabuf_put_be16(msg, methods);
580 return 0;
581}
582
583
584static 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 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700593 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
594 WPS_CONFIG_PHY_PUSHBUTTON);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700595 wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
596 wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
597 wpabuf_put_be16(msg, 2);
598 wpabuf_put_be16(msg, methods);
599 return 0;
600}
601
602
603static int wps_build_config_methods_r(struct wps_registrar *reg,
604 struct wpabuf *msg)
605{
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800606 return wps_build_config_methods(msg, reg->wps->config_methods);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700607}
608
609
610const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count)
611{
612 *count = 0;
613
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700614 while (*count < WPS_MAX_AUTHORIZED_MACS) {
615 if (is_zero_ether_addr(reg->authorized_macs_union[*count]))
616 break;
617 (*count)++;
618 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700619
620 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 */
636struct wps_registrar *
637wps_registrar_init(struct wps_context *wps,
638 const struct wps_registrar_config *cfg)
639{
640 struct wps_registrar *reg = os_zalloc(sizeof(*reg));
641 if (reg == NULL)
642 return NULL;
643
644 dl_list_init(&reg->pins);
Dmitry Shmidt04949592012-07-19 12:16:46 -0700645 dl_list_init(&reg->nfc_pw_tokens);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700646 reg->wps = wps;
647 reg->new_psk_cb = cfg->new_psk_cb;
648 reg->set_ie_cb = cfg->set_ie_cb;
649 reg->pin_needed_cb = cfg->pin_needed_cb;
650 reg->reg_success_cb = cfg->reg_success_cb;
651 reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
652 reg->enrollee_seen_cb = cfg->enrollee_seen_cb;
653 reg->cb_ctx = cfg->cb_ctx;
654 reg->skip_cred_build = cfg->skip_cred_build;
655 if (cfg->extra_cred) {
656 reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
657 cfg->extra_cred_len);
658 if (reg->extra_cred == NULL) {
659 os_free(reg);
660 return NULL;
661 }
662 }
663 reg->disable_auto_conf = cfg->disable_auto_conf;
664 reg->sel_reg_dev_password_id_override = -1;
665 reg->sel_reg_config_methods_override = -1;
666 reg->static_wep_only = cfg->static_wep_only;
667 reg->dualband = cfg->dualband;
Dmitry Shmidt391c59f2013-09-03 12:16:28 -0700668 reg->force_per_enrollee_psk = cfg->force_per_enrollee_psk;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700669
670 if (wps_set_ie(reg)) {
671 wps_registrar_deinit(reg);
672 return NULL;
673 }
674
675 return reg;
676}
677
678
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800679void wps_registrar_flush(struct wps_registrar *reg)
680{
681 if (reg == NULL)
682 return;
683 wps_free_pins(&reg->pins);
684 wps_free_nfc_pw_tokens(&reg->nfc_pw_tokens, 0);
685 wps_free_pbc_sessions(reg->pbc_sessions);
686 reg->pbc_sessions = NULL;
687 wps_free_devices(reg->devices);
688 reg->devices = NULL;
689#ifdef WPS_WORKAROUNDS
690 reg->pbc_ignore_start.sec = 0;
691#endif /* WPS_WORKAROUNDS */
692}
693
694
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700695/**
696 * wps_registrar_deinit - Deinitialize WPS Registrar data
697 * @reg: Registrar data from wps_registrar_init()
698 */
699void wps_registrar_deinit(struct wps_registrar *reg)
700{
701 if (reg == NULL)
702 return;
703 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
704 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800705 wps_registrar_flush(reg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700706 wpabuf_free(reg->extra_cred);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700707 os_free(reg);
708}
709
710
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800711static void wps_registrar_invalidate_unused(struct wps_registrar *reg)
712{
713 struct wps_uuid_pin *pin;
714
715 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
716 if (pin->wildcard_uuid == 1 && !(pin->flags & PIN_LOCKED)) {
717 wpa_printf(MSG_DEBUG, "WPS: Invalidate previously "
718 "configured wildcard PIN");
719 wps_registrar_remove_pin(reg, pin);
720 break;
721 }
722 }
723}
724
725
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700726/**
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 */
736int 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 p = os_zalloc(sizeof(*p));
743 if (p == NULL)
744 return -1;
745 if (addr)
746 os_memcpy(p->enrollee_addr, addr, ETH_ALEN);
747 if (uuid == NULL)
748 p->wildcard_uuid = 1;
749 else
750 os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
751 p->pin = os_malloc(pin_len);
752 if (p->pin == NULL) {
753 os_free(p);
754 return -1;
755 }
756 os_memcpy(p->pin, pin, pin_len);
757 p->pin_len = pin_len;
758
759 if (timeout) {
760 p->flags |= PIN_EXPIRES;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800761 os_get_reltime(&p->expiration);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700762 p->expiration.sec += timeout;
763 }
764
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800765 if (p->wildcard_uuid)
766 wps_registrar_invalidate_unused(reg);
767
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700768 dl_list_add(&reg->pins, &p->list);
769
770 wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
771 timeout);
772 wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
773 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
774 reg->selected_registrar = 1;
775 reg->pbc = 0;
776 if (addr)
777 wps_registrar_add_authorized_mac(reg, addr);
778 else
779 wps_registrar_add_authorized_mac(
780 reg, (u8 *) "\xff\xff\xff\xff\xff\xff");
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700781 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700782 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
783 eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
784 wps_registrar_set_selected_timeout,
785 reg, NULL);
786
787 return 0;
788}
789
790
791static void wps_registrar_remove_pin(struct wps_registrar *reg,
792 struct wps_uuid_pin *pin)
793{
794 u8 *addr;
795 u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
796
797 if (is_zero_ether_addr(pin->enrollee_addr))
798 addr = bcast;
799 else
800 addr = pin->enrollee_addr;
801 wps_registrar_remove_authorized_mac(reg, addr);
802 wps_remove_pin(pin);
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700803 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700804}
805
806
807static void wps_registrar_expire_pins(struct wps_registrar *reg)
808{
809 struct wps_uuid_pin *pin, *prev;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800810 struct os_reltime now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700811
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800812 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700813 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
814 {
815 if ((pin->flags & PIN_EXPIRES) &&
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800816 os_reltime_before(&pin->expiration, &now)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700817 wpa_hexdump(MSG_DEBUG, "WPS: Expired PIN for UUID",
818 pin->uuid, WPS_UUID_LEN);
819 wps_registrar_remove_pin(reg, pin);
820 }
821 }
822}
823
824
825/**
826 * wps_registrar_invalidate_wildcard_pin - Invalidate a wildcard PIN
827 * @reg: Registrar data from wps_registrar_init()
Dmitry Shmidt04949592012-07-19 12:16:46 -0700828 * @dev_pw: PIN to search for or %NULL to match any
829 * @dev_pw_len: Length of dev_pw in octets
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700830 * Returns: 0 on success, -1 if not wildcard PIN is enabled
831 */
Dmitry Shmidt04949592012-07-19 12:16:46 -0700832static int wps_registrar_invalidate_wildcard_pin(struct wps_registrar *reg,
833 const u8 *dev_pw,
834 size_t dev_pw_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700835{
836 struct wps_uuid_pin *pin, *prev;
837
838 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
839 {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700840 if (dev_pw && pin->pin &&
841 (dev_pw_len != pin->pin_len ||
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700842 os_memcmp_const(dev_pw, pin->pin, dev_pw_len) != 0))
Dmitry Shmidt04949592012-07-19 12:16:46 -0700843 continue; /* different PIN */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700844 if (pin->wildcard_uuid) {
845 wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
846 pin->uuid, WPS_UUID_LEN);
847 wps_registrar_remove_pin(reg, pin);
848 return 0;
849 }
850 }
851
852 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 */
862int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
863{
864 struct wps_uuid_pin *pin, *prev;
865
866 dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
867 {
868 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
869 wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
870 pin->uuid, WPS_UUID_LEN);
871 wps_registrar_remove_pin(reg, pin);
872 return 0;
873 }
874 }
875
876 return -1;
877}
878
879
880static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
881 const u8 *uuid, size_t *pin_len)
882{
883 struct wps_uuid_pin *pin, *found = NULL;
884
885 wps_registrar_expire_pins(reg);
886
887 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
888 if (!pin->wildcard_uuid &&
889 os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
890 found = pin;
891 break;
892 }
893 }
894
895 if (!found) {
896 /* Check for wildcard UUIDs since none of the UUID-specific
897 * PINs matched */
898 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800899 if (pin->wildcard_uuid == 1 ||
900 pin->wildcard_uuid == 2) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700901 wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
902 "PIN. Assigned it for this UUID-E");
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800903 pin->wildcard_uuid++;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700904 os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
905 found = pin;
906 break;
907 }
908 }
909 }
910
911 if (!found)
912 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 if (found->flags & PIN_LOCKED) {
919 wpa_printf(MSG_DEBUG, "WPS: Selected PIN locked - do not "
920 "allow concurrent re-use");
921 return NULL;
922 }
923 *pin_len = found->pin_len;
924 found->flags |= PIN_LOCKED;
925 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 */
939int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
940{
941 struct wps_uuid_pin *pin;
942
943 dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
944 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800945 if (pin->wildcard_uuid == 3) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700946 wpa_printf(MSG_DEBUG, "WPS: Invalidating used "
947 "wildcard PIN");
948 return wps_registrar_invalidate_pin(reg, uuid);
949 }
950 pin->flags &= ~PIN_LOCKED;
951 return 0;
952 }
953 }
954
955 return -1;
956}
957
958
959static void wps_registrar_stop_pbc(struct wps_registrar *reg)
960{
961 reg->selected_registrar = 0;
962 reg->pbc = 0;
963 os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
964 wps_registrar_remove_authorized_mac(reg,
965 (u8 *) "\xff\xff\xff\xff\xff\xff");
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700966 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700967}
968
969
970static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx)
971{
972 struct wps_registrar *reg = eloop_ctx;
973
974 wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
975 wps_pbc_timeout_event(reg->wps);
976 wps_registrar_stop_pbc(reg);
977}
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
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800991 * PBC mode is not activated and -2 is returned to indicate session overlap.
992 * This is skipped if a specific Enrollee is selected.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700993 */
994int wps_registrar_button_pushed(struct wps_registrar *reg,
995 const u8 *p2p_dev_addr)
996{
997 if (p2p_dev_addr == NULL &&
998 wps_registrar_pbc_overlap(reg, NULL, NULL)) {
999 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - do not start PBC "
1000 "mode");
1001 wps_pbc_overlap_event(reg->wps);
1002 return -2;
1003 }
1004 wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
1005 reg->force_pbc_overlap = 0;
1006 reg->selected_registrar = 1;
1007 reg->pbc = 1;
1008 if (p2p_dev_addr)
1009 os_memcpy(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
1010 else
1011 os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
1012 wps_registrar_add_authorized_mac(reg,
1013 (u8 *) "\xff\xff\xff\xff\xff\xff");
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001014 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001015
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001016 wps_pbc_active_event(reg->wps);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001017 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1018 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1019 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
1020 reg, NULL);
1021 return 0;
1022}
1023
1024
1025static void wps_registrar_pbc_completed(struct wps_registrar *reg)
1026{
1027 wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
1028 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1029 wps_registrar_stop_pbc(reg);
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001030 wps_pbc_disable_event(reg->wps);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001031}
1032
1033
1034static void wps_registrar_pin_completed(struct wps_registrar *reg)
1035{
1036 wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
1037 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1038 reg->selected_registrar = 0;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001039 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001040}
1041
1042
Dmitry Shmidt04949592012-07-19 12:16:46 -07001043void wps_registrar_complete(struct wps_registrar *registrar, const u8 *uuid_e,
1044 const u8 *dev_pw, size_t dev_pw_len)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001045{
1046 if (registrar->pbc) {
1047 wps_registrar_remove_pbc_session(registrar,
1048 uuid_e, NULL);
1049 wps_registrar_pbc_completed(registrar);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001050#ifdef WPS_WORKAROUNDS
1051 os_get_reltime(&registrar->pbc_ignore_start);
1052#endif /* WPS_WORKAROUNDS */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001053 os_memcpy(registrar->pbc_ignore_uuid, uuid_e, WPS_UUID_LEN);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001054 } else {
1055 wps_registrar_pin_completed(registrar);
1056 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001057
1058 if (dev_pw &&
1059 wps_registrar_invalidate_wildcard_pin(registrar, dev_pw,
1060 dev_pw_len) == 0) {
1061 wpa_hexdump_key(MSG_DEBUG, "WPS: Invalidated wildcard PIN",
1062 dev_pw, dev_pw_len);
1063 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001064}
1065
1066
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001067int wps_registrar_wps_cancel(struct wps_registrar *reg)
1068{
1069 if (reg->pbc) {
1070 wpa_printf(MSG_DEBUG, "WPS: PBC is set - cancelling it");
1071 wps_registrar_pbc_timeout(reg, NULL);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001072 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001073 return 1;
1074 } else if (reg->selected_registrar) {
1075 /* PIN Method */
1076 wpa_printf(MSG_DEBUG, "WPS: PIN is set - cancelling it");
1077 wps_registrar_pin_completed(reg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001078 wps_registrar_invalidate_wildcard_pin(reg, NULL, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001079 return 1;
1080 }
1081 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 */
1095void 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;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001100 int skip_add = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001101
1102 wpa_hexdump_buf(MSG_MSGDUMP,
1103 "WPS: Probe Request with WPS data received",
1104 wps_data);
1105
1106 if (wps_parse_msg(wps_data, &attr) < 0)
1107 return;
1108
1109 if (attr.config_methods == NULL) {
1110 wpa_printf(MSG_DEBUG, "WPS: No Config Methods attribute in "
1111 "Probe Request");
1112 return;
1113 }
1114
1115 if (attr.dev_password_id == NULL) {
1116 wpa_printf(MSG_DEBUG, "WPS: No Device Password Id attribute "
1117 "in Probe Request");
1118 return;
1119 }
1120
1121 if (reg->enrollee_seen_cb && attr.uuid_e &&
1122 attr.primary_dev_type && attr.request_type && !p2p_wildcard) {
1123 char *dev_name = NULL;
1124 if (attr.dev_name) {
1125 dev_name = os_zalloc(attr.dev_name_len + 1);
1126 if (dev_name) {
1127 os_memcpy(dev_name, attr.dev_name,
1128 attr.dev_name_len);
1129 }
1130 }
1131 reg->enrollee_seen_cb(reg->cb_ctx, addr, attr.uuid_e,
1132 attr.primary_dev_type,
1133 WPA_GET_BE16(attr.config_methods),
1134 WPA_GET_BE16(attr.dev_password_id),
1135 *attr.request_type, dev_name);
1136 os_free(dev_name);
1137 }
1138
1139 if (WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
1140 return; /* Not PBC */
1141
1142 wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
1143 MACSTR, MAC2STR(addr));
1144 if (attr.uuid_e == NULL) {
1145 wpa_printf(MSG_DEBUG, "WPS: Invalid Probe Request WPS IE: No "
1146 "UUID-E included");
1147 return;
1148 }
1149 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E from Probe Request", attr.uuid_e,
1150 WPS_UUID_LEN);
1151
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001152#ifdef WPS_WORKAROUNDS
1153 if (reg->pbc_ignore_start.sec &&
1154 os_memcmp(attr.uuid_e, reg->pbc_ignore_uuid, WPS_UUID_LEN) == 0) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001155 struct os_reltime now, dur;
1156 os_get_reltime(&now);
1157 os_reltime_sub(&now, &reg->pbc_ignore_start, &dur);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001158 if (dur.sec >= 0 && dur.sec < 5) {
1159 wpa_printf(MSG_DEBUG, "WPS: Ignore PBC activation "
1160 "based on Probe Request from the Enrollee "
1161 "that just completed PBC provisioning");
1162 skip_add = 1;
1163 } else
1164 reg->pbc_ignore_start.sec = 0;
1165 }
1166#endif /* WPS_WORKAROUNDS */
1167
1168 if (!skip_add)
1169 wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001170 if (wps_registrar_pbc_overlap(reg, addr, attr.uuid_e)) {
1171 wpa_printf(MSG_DEBUG, "WPS: PBC session overlap detected");
1172 reg->force_pbc_overlap = 1;
1173 wps_pbc_overlap_event(reg->wps);
1174 }
1175}
1176
1177
Dmitry Shmidtb36ed7c2014-03-17 10:57:26 -07001178int 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)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001180{
1181 if (reg->new_psk_cb == NULL)
1182 return 0;
1183
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001184 return reg->new_psk_cb(reg->cb_ctx, mac_addr, p2p_dev_addr, psk,
1185 psk_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001186}
1187
1188
1189static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
1190 const struct wps_device_data *dev)
1191{
1192 if (reg->pin_needed_cb == NULL)
1193 return;
1194
1195 reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
1196}
1197
1198
1199static void wps_cb_reg_success(struct wps_registrar *reg, const u8 *mac_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001200 const u8 *uuid_e, const u8 *dev_pw,
1201 size_t dev_pw_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001202{
1203 if (reg->reg_success_cb == NULL)
1204 return;
1205
Dmitry Shmidt04949592012-07-19 12:16:46 -07001206 reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e, dev_pw, dev_pw_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001207}
1208
1209
1210static int wps_cb_set_ie(struct wps_registrar *reg, struct wpabuf *beacon_ie,
1211 struct wpabuf *probe_resp_ie)
1212{
1213 return reg->set_ie_cb(reg->cb_ctx, beacon_ie, probe_resp_ie);
1214}
1215
1216
1217static void wps_cb_set_sel_reg(struct wps_registrar *reg)
1218{
1219 u16 methods = 0;
1220 if (reg->set_sel_reg_cb == NULL)
1221 return;
1222
1223 if (reg->selected_registrar) {
1224 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001225 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
1226 WPS_CONFIG_PHY_PUSHBUTTON);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001227 if (reg->pbc)
1228 wps_set_pushbutton(&methods, reg->wps->config_methods);
1229 }
1230
1231 wpa_printf(MSG_DEBUG, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
1232 "config_methods=0x%x pbc=%d methods=0x%x",
1233 reg->selected_registrar, reg->wps->config_methods,
1234 reg->pbc, methods);
1235
1236 reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
1237 reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
1238 methods);
1239}
1240
1241
1242static 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 size_t vendor_len = 0;
1249 int i;
1250
1251 if (reg->set_ie_cb == NULL)
1252 return 0;
1253
1254 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
1255 if (reg->wps->dev.vendor_ext[i]) {
1256 vendor_len += 2 + 2;
1257 vendor_len += wpabuf_len(reg->wps->dev.vendor_ext[i]);
1258 }
1259 }
1260
1261 beacon = wpabuf_alloc(400 + vendor_len);
1262 if (beacon == NULL)
1263 return -1;
1264 probe = wpabuf_alloc(500 + vendor_len);
1265 if (probe == NULL) {
1266 wpabuf_free(beacon);
1267 return -1;
1268 }
1269
1270 auth_macs = wps_authorized_macs(reg, &count);
1271
1272 wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
1273
1274 if (wps_build_version(beacon) ||
1275 wps_build_wps_state(reg->wps, beacon) ||
1276 wps_build_ap_setup_locked(reg->wps, beacon) ||
1277 wps_build_selected_registrar(reg, beacon) ||
1278 wps_build_sel_reg_dev_password_id(reg, beacon) ||
1279 wps_build_sel_reg_config_methods(reg, beacon) ||
1280 wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001281 (reg->dualband && wps_build_rf_bands(&reg->wps->dev, beacon, 0)) ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001282 wps_build_wfa_ext(beacon, 0, auth_macs, count) ||
1283 wps_build_vendor_ext(&reg->wps->dev, beacon)) {
1284 wpabuf_free(beacon);
1285 wpabuf_free(probe);
1286 return -1;
1287 }
1288
1289#ifdef CONFIG_P2P
1290 if (wps_build_dev_name(&reg->wps->dev, beacon) ||
1291 wps_build_primary_dev_type(&reg->wps->dev, beacon)) {
1292 wpabuf_free(beacon);
1293 wpabuf_free(probe);
1294 return -1;
1295 }
1296#endif /* CONFIG_P2P */
1297
1298 wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
1299
1300 if (wps_build_version(probe) ||
1301 wps_build_wps_state(reg->wps, probe) ||
1302 wps_build_ap_setup_locked(reg->wps, probe) ||
1303 wps_build_selected_registrar(reg, probe) ||
1304 wps_build_sel_reg_dev_password_id(reg, probe) ||
1305 wps_build_sel_reg_config_methods(reg, probe) ||
1306 wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
1307 WPS_RESP_REGISTRAR) ||
1308 wps_build_uuid_e(probe, reg->wps->uuid) ||
1309 wps_build_device_attrs(&reg->wps->dev, probe) ||
1310 wps_build_probe_config_methods(reg, probe) ||
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001311 (reg->dualband && wps_build_rf_bands(&reg->wps->dev, probe, 0)) ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001312 wps_build_wfa_ext(probe, 0, auth_macs, count) ||
1313 wps_build_vendor_ext(&reg->wps->dev, probe)) {
1314 wpabuf_free(beacon);
1315 wpabuf_free(probe);
1316 return -1;
1317 }
1318
1319 beacon = wps_ie_encapsulate(beacon);
1320 probe = wps_ie_encapsulate(probe);
1321
1322 if (!beacon || !probe) {
1323 wpabuf_free(beacon);
1324 wpabuf_free(probe);
1325 return -1;
1326 }
1327
1328 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 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 wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
1345 "into Beacon/Probe Response frames");
1346 wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
1347 wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
1348 }
1349
1350 return wps_cb_set_ie(reg, beacon, probe);
1351}
1352
1353
1354static int wps_get_dev_password(struct wps_data *wps)
1355{
1356 const u8 *pin;
1357 size_t pin_len = 0;
1358
Dmitry Shmidtc2817022014-07-02 10:32:10 -07001359 bin_clear_free(wps->dev_password, wps->dev_password_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001360 wps->dev_password = NULL;
1361
1362 if (wps->pbc) {
1363 wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
1364 pin = (const u8 *) "00000000";
1365 pin_len = 8;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001366#ifdef CONFIG_WPS_NFC
1367 } else if (wps->nfc_pw_token) {
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001368 if (wps->nfc_pw_token->pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
1369 {
1370 wpa_printf(MSG_DEBUG, "WPS: Using NFC connection "
1371 "handover and abbreviated WPS handshake "
1372 "without Device Password");
1373 return 0;
1374 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001375 wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from NFC "
1376 "Password Token");
1377 pin = wps->nfc_pw_token->dev_pw;
1378 pin_len = wps->nfc_pw_token->dev_pw_len;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001379 } else if (wps->dev_pw_id >= 0x10 &&
1380 wps->wps->ap_nfc_dev_pw_id == wps->dev_pw_id &&
1381 wps->wps->ap_nfc_dev_pw) {
1382 wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from own NFC Password Token");
1383 pin = wpabuf_head(wps->wps->ap_nfc_dev_pw);
1384 pin_len = wpabuf_len(wps->wps->ap_nfc_dev_pw);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001385#endif /* CONFIG_WPS_NFC */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001386 } else {
1387 pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
1388 &pin_len);
Dmitry Shmidtf8623282013-02-20 14:34:59 -08001389 if (pin && wps->dev_pw_id >= 0x10) {
1390 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 wps->dev_pw_id = DEV_PW_DEFAULT;
1396 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001397 }
1398 if (pin == NULL) {
1399 wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
Dmitry Shmidt54605472013-11-08 11:10:19 -08001400 "the Enrollee (context %p registrar %p)",
1401 wps->wps, wps->wps->registrar);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001402 wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1403 &wps->peer_dev);
1404 return -1;
1405 }
1406
1407 wps->dev_password = os_malloc(pin_len);
1408 if (wps->dev_password == NULL)
1409 return -1;
1410 os_memcpy(wps->dev_password, pin, pin_len);
1411 wps->dev_password_len = pin_len;
1412
1413 return 0;
1414}
1415
1416
1417static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1418{
1419 wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
1420 wpabuf_put_be16(msg, ATTR_UUID_R);
1421 wpabuf_put_be16(msg, WPS_UUID_LEN);
1422 wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1423 return 0;
1424}
1425
1426
1427static 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 if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1434 return -1;
1435 wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1436 wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1437 wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1438
1439 if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
1440 wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
1441 "R-Hash derivation");
1442 return -1;
1443 }
1444
1445 wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
1446 wpabuf_put_be16(msg, ATTR_R_HASH1);
1447 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1448 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1449 /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1450 addr[0] = wps->snonce;
1451 len[0] = WPS_SECRET_NONCE_LEN;
1452 addr[1] = wps->psk1;
1453 len[1] = WPS_PSK_LEN;
1454 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1455 len[2] = wpabuf_len(wps->dh_pubkey_e);
1456 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1457 len[3] = wpabuf_len(wps->dh_pubkey_r);
1458 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1459 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1460
1461 wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
1462 wpabuf_put_be16(msg, ATTR_R_HASH2);
1463 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1464 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1465 /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1466 addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1467 addr[1] = wps->psk2;
1468 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1469 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1470
1471 return 0;
1472}
1473
1474
1475static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1476{
1477 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
1478 wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1479 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1480 wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1481 return 0;
1482}
1483
1484
1485static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1486{
1487 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
1488 wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1489 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1490 wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1491 WPS_SECRET_NONCE_LEN);
1492 return 0;
1493}
1494
1495
1496static int wps_build_cred_network_idx(struct wpabuf *msg,
1497 const struct wps_credential *cred)
1498{
1499 wpa_printf(MSG_DEBUG, "WPS: * Network Index (1)");
1500 wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1501 wpabuf_put_be16(msg, 1);
1502 wpabuf_put_u8(msg, 1);
1503 return 0;
1504}
1505
1506
1507static int wps_build_cred_ssid(struct wpabuf *msg,
1508 const struct wps_credential *cred)
1509{
1510 wpa_printf(MSG_DEBUG, "WPS: * SSID");
1511 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID for Credential",
1512 cred->ssid, cred->ssid_len);
1513 wpabuf_put_be16(msg, ATTR_SSID);
1514 wpabuf_put_be16(msg, cred->ssid_len);
1515 wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1516 return 0;
1517}
1518
1519
1520static int wps_build_cred_auth_type(struct wpabuf *msg,
1521 const struct wps_credential *cred)
1522{
1523 wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
1524 cred->auth_type);
1525 wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1526 wpabuf_put_be16(msg, 2);
1527 wpabuf_put_be16(msg, cred->auth_type);
1528 return 0;
1529}
1530
1531
1532static int wps_build_cred_encr_type(struct wpabuf *msg,
1533 const struct wps_credential *cred)
1534{
1535 wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
1536 cred->encr_type);
1537 wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1538 wpabuf_put_be16(msg, 2);
1539 wpabuf_put_be16(msg, cred->encr_type);
1540 return 0;
1541}
1542
1543
1544static int wps_build_cred_network_key(struct wpabuf *msg,
1545 const struct wps_credential *cred)
1546{
1547 wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%d)",
1548 (int) cred->key_len);
1549 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
1550 cred->key, cred->key_len);
1551 wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1552 wpabuf_put_be16(msg, cred->key_len);
1553 wpabuf_put_data(msg, cred->key, cred->key_len);
1554 return 0;
1555}
1556
1557
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001558static int wps_build_credential(struct wpabuf *msg,
1559 const struct wps_credential *cred)
1560{
1561 if (wps_build_cred_network_idx(msg, cred) ||
1562 wps_build_cred_ssid(msg, cred) ||
1563 wps_build_cred_auth_type(msg, cred) ||
1564 wps_build_cred_encr_type(msg, cred) ||
1565 wps_build_cred_network_key(msg, cred) ||
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001566 wps_build_mac_addr(msg, cred->mac_addr))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001567 return -1;
1568 return 0;
1569}
1570
1571
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001572int wps_build_credential_wrap(struct wpabuf *msg,
1573 const struct wps_credential *cred)
1574{
1575 struct wpabuf *wbuf;
1576 wbuf = wpabuf_alloc(200);
1577 if (wbuf == NULL)
1578 return -1;
1579 if (wps_build_credential(wbuf, cred)) {
1580 wpabuf_free(wbuf);
1581 return -1;
1582 }
1583 wpabuf_put_be16(msg, ATTR_CRED);
1584 wpabuf_put_be16(msg, wpabuf_len(wbuf));
1585 wpabuf_put_buf(msg, wbuf);
1586 wpabuf_free(wbuf);
1587 return 0;
1588}
1589
1590
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001591int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1592{
1593 struct wpabuf *cred;
1594
1595 if (wps->wps->registrar->skip_cred_build)
1596 goto skip_cred_build;
1597
1598 wpa_printf(MSG_DEBUG, "WPS: * Credential");
1599 if (wps->use_cred) {
1600 os_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
1601 goto use_provided;
1602 }
1603 os_memset(&wps->cred, 0, sizeof(wps->cred));
1604
1605 os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1606 wps->cred.ssid_len = wps->wps->ssid_len;
1607
1608 /* Select the best authentication and encryption type */
1609 if (wps->auth_type & WPS_AUTH_WPA2PSK)
1610 wps->auth_type = WPS_AUTH_WPA2PSK;
1611 else if (wps->auth_type & WPS_AUTH_WPAPSK)
1612 wps->auth_type = WPS_AUTH_WPAPSK;
1613 else if (wps->auth_type & WPS_AUTH_OPEN)
1614 wps->auth_type = WPS_AUTH_OPEN;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001615 else {
1616 wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1617 wps->auth_type);
1618 return -1;
1619 }
1620 wps->cred.auth_type = wps->auth_type;
1621
1622 if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1623 wps->auth_type == WPS_AUTH_WPAPSK) {
1624 if (wps->encr_type & WPS_ENCR_AES)
1625 wps->encr_type = WPS_ENCR_AES;
1626 else if (wps->encr_type & WPS_ENCR_TKIP)
1627 wps->encr_type = WPS_ENCR_TKIP;
1628 else {
1629 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1630 "type for WPA/WPA2");
1631 return -1;
1632 }
1633 } else {
Dmitry Shmidt21de2142014-04-08 10:50:52 -07001634 if (wps->encr_type & WPS_ENCR_NONE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001635 wps->encr_type = WPS_ENCR_NONE;
Dmitry Shmidt21de2142014-04-08 10:50:52 -07001636#ifdef CONFIG_TESTING_OPTIONS
1637 else if (wps->encr_type & WPS_ENCR_WEP)
1638 wps->encr_type = WPS_ENCR_WEP;
1639#endif /* CONFIG_TESTING_OPTIONS */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001640 else {
1641 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1642 "type for non-WPA/WPA2 mode");
1643 return -1;
1644 }
1645 }
1646 wps->cred.encr_type = wps->encr_type;
1647 /*
1648 * Set MAC address in the Credential to be the Enrollee's MAC address
1649 */
1650 os_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ETH_ALEN);
1651
1652 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1653 !wps->wps->registrar->disable_auto_conf) {
1654 u8 r[16];
1655 /* Generate a random passphrase */
Dmitry Shmidt661b4f72014-09-29 14:58:27 -07001656 if (random_pool_ready() != 1 ||
1657 random_get_bytes(r, sizeof(r)) < 0) {
1658 wpa_printf(MSG_INFO,
1659 "WPS: Could not generate random PSK");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001660 return -1;
Dmitry Shmidt661b4f72014-09-29 14:58:27 -07001661 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001662 os_free(wps->new_psk);
1663 wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1664 if (wps->new_psk == NULL)
1665 return -1;
1666 wps->new_psk_len--; /* remove newline */
1667 while (wps->new_psk_len &&
1668 wps->new_psk[wps->new_psk_len - 1] == '=')
1669 wps->new_psk_len--;
1670 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1671 wps->new_psk, wps->new_psk_len);
1672 os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1673 wps->cred.key_len = wps->new_psk_len;
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001674 } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1675 wps->use_psk_key && wps->wps->psk_set) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001676 char hex[65];
1677 wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
1678 wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
1679 os_memcpy(wps->cred.key, hex, 32 * 2);
1680 wps->cred.key_len = 32 * 2;
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001681 } else if (!wps->wps->registrar->force_per_enrollee_psk &&
1682 wps->wps->network_key) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001683 os_memcpy(wps->cred.key, wps->wps->network_key,
1684 wps->wps->network_key_len);
1685 wps->cred.key_len = wps->wps->network_key_len;
1686 } else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1687 char hex[65];
1688 /* Generate a random per-device PSK */
1689 os_free(wps->new_psk);
1690 wps->new_psk_len = 32;
1691 wps->new_psk = os_malloc(wps->new_psk_len);
1692 if (wps->new_psk == NULL)
1693 return -1;
Dmitry Shmidt661b4f72014-09-29 14:58:27 -07001694 if (random_pool_ready() != 1 ||
1695 random_get_bytes(wps->new_psk, wps->new_psk_len) < 0) {
1696 wpa_printf(MSG_INFO,
1697 "WPS: Could not generate random PSK");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001698 os_free(wps->new_psk);
1699 wps->new_psk = NULL;
1700 return -1;
1701 }
1702 wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1703 wps->new_psk, wps->new_psk_len);
1704 wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1705 wps->new_psk_len);
1706 os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1707 wps->cred.key_len = wps->new_psk_len * 2;
1708 }
1709
1710use_provided:
1711#ifdef CONFIG_WPS_TESTING
1712 if (wps_testing_dummy_cred)
1713 cred = wpabuf_alloc(200);
1714 else
1715 cred = NULL;
1716 if (cred) {
1717 struct wps_credential dummy;
1718 wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
1719 os_memset(&dummy, 0, sizeof(dummy));
1720 os_memcpy(dummy.ssid, "dummy", 5);
1721 dummy.ssid_len = 5;
1722 dummy.auth_type = WPS_AUTH_WPA2PSK;
1723 dummy.encr_type = WPS_ENCR_AES;
1724 os_memcpy(dummy.key, "dummy psk", 9);
1725 dummy.key_len = 9;
1726 os_memcpy(dummy.mac_addr, wps->mac_addr_e, ETH_ALEN);
1727 wps_build_credential(cred, &dummy);
1728 wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
1729
1730 wpabuf_put_be16(msg, ATTR_CRED);
1731 wpabuf_put_be16(msg, wpabuf_len(cred));
1732 wpabuf_put_buf(msg, cred);
1733
1734 wpabuf_free(cred);
1735 }
1736#endif /* CONFIG_WPS_TESTING */
1737
1738 cred = wpabuf_alloc(200);
1739 if (cred == NULL)
1740 return -1;
1741
1742 if (wps_build_credential(cred, &wps->cred)) {
1743 wpabuf_free(cred);
1744 return -1;
1745 }
1746
1747 wpabuf_put_be16(msg, ATTR_CRED);
1748 wpabuf_put_be16(msg, wpabuf_len(cred));
1749 wpabuf_put_buf(msg, cred);
1750 wpabuf_free(cred);
1751
1752skip_cred_build:
1753 if (wps->wps->registrar->extra_cred) {
1754 wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
1755 wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1756 }
1757
1758 return 0;
1759}
1760
1761
1762static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1763{
1764 wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
1765
1766 if (wps_build_credential(msg, &wps->cred))
1767 return -1;
1768
1769 return 0;
1770}
1771
1772
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001773static struct wpabuf * wps_build_ap_cred(struct wps_data *wps)
1774{
1775 struct wpabuf *msg, *plain;
1776
1777 msg = wpabuf_alloc(1000);
1778 if (msg == NULL)
1779 return NULL;
1780
1781 plain = wpabuf_alloc(200);
1782 if (plain == NULL) {
1783 wpabuf_free(msg);
1784 return NULL;
1785 }
1786
1787 if (wps_build_ap_settings(wps, plain)) {
1788 wpabuf_free(plain);
1789 wpabuf_free(msg);
1790 return NULL;
1791 }
1792
1793 wpabuf_put_be16(msg, ATTR_CRED);
1794 wpabuf_put_be16(msg, wpabuf_len(plain));
1795 wpabuf_put_buf(msg, plain);
1796 wpabuf_free(plain);
1797
1798 return msg;
1799}
1800
1801
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001802static struct wpabuf * wps_build_m2(struct wps_data *wps)
1803{
1804 struct wpabuf *msg;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001805 int config_in_m2 = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001806
1807 if (random_get_bytes(wps->nonce_r, WPS_NONCE_LEN) < 0)
1808 return NULL;
1809 wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1810 wps->nonce_r, WPS_NONCE_LEN);
1811 wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1812
1813 wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1814 msg = wpabuf_alloc(1000);
1815 if (msg == NULL)
1816 return NULL;
1817
1818 if (wps_build_version(msg) ||
1819 wps_build_msg_type(msg, WPS_M2) ||
1820 wps_build_enrollee_nonce(wps, msg) ||
1821 wps_build_registrar_nonce(wps, msg) ||
1822 wps_build_uuid_r(wps, msg) ||
1823 wps_build_public_key(wps, msg) ||
1824 wps_derive_keys(wps) ||
1825 wps_build_auth_type_flags(wps, msg) ||
1826 wps_build_encr_type_flags(wps, msg) ||
1827 wps_build_conn_type_flags(wps, msg) ||
1828 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1829 wps_build_device_attrs(&wps->wps->dev, msg) ||
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001830 wps_build_rf_bands(&wps->wps->dev, msg,
1831 wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001832 wps_build_assoc_state(wps, msg) ||
1833 wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1834 wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1835 wps_build_os_version(&wps->wps->dev, msg) ||
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001836 wps_build_wfa_ext(msg, 0, NULL, 0)) {
1837 wpabuf_free(msg);
1838 return NULL;
1839 }
1840
1841#ifdef CONFIG_WPS_NFC
1842 if (wps->nfc_pw_token && wps->nfc_pw_token->pk_hash_provided_oob &&
1843 wps->nfc_pw_token->pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1844 /*
1845 * Use abbreviated handshake since public key hash allowed
1846 * Enrollee to validate our public key similarly to how Enrollee
1847 * public key was validated. There is no need to validate Device
1848 * Password in this case.
1849 */
1850 struct wpabuf *plain = wpabuf_alloc(500);
1851 if (plain == NULL ||
1852 wps_build_cred(wps, plain) ||
1853 wps_build_key_wrap_auth(wps, plain) ||
1854 wps_build_encr_settings(wps, msg, plain)) {
1855 wpabuf_free(msg);
1856 wpabuf_free(plain);
1857 return NULL;
1858 }
1859 wpabuf_free(plain);
1860 config_in_m2 = 1;
1861 }
1862#endif /* CONFIG_WPS_NFC */
1863
1864 if (wps_build_authenticator(wps, msg)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001865 wpabuf_free(msg);
1866 return NULL;
1867 }
1868
1869 wps->int_reg = 1;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001870 wps->state = config_in_m2 ? RECV_DONE : RECV_M3;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001871 return msg;
1872}
1873
1874
1875static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1876{
1877 struct wpabuf *msg;
1878 u16 err = wps->config_error;
1879
1880 wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1881 msg = wpabuf_alloc(1000);
1882 if (msg == NULL)
1883 return NULL;
1884
1885 if (wps->wps->ap && wps->wps->ap_setup_locked &&
1886 err == WPS_CFG_NO_ERROR)
1887 err = WPS_CFG_SETUP_LOCKED;
1888
1889 if (wps_build_version(msg) ||
1890 wps_build_msg_type(msg, WPS_M2D) ||
1891 wps_build_enrollee_nonce(wps, msg) ||
1892 wps_build_registrar_nonce(wps, msg) ||
1893 wps_build_uuid_r(wps, msg) ||
1894 wps_build_auth_type_flags(wps, msg) ||
1895 wps_build_encr_type_flags(wps, msg) ||
1896 wps_build_conn_type_flags(wps, msg) ||
1897 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1898 wps_build_device_attrs(&wps->wps->dev, msg) ||
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001899 wps_build_rf_bands(&wps->wps->dev, msg,
1900 wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001901 wps_build_assoc_state(wps, msg) ||
1902 wps_build_config_error(msg, err) ||
1903 wps_build_os_version(&wps->wps->dev, msg) ||
1904 wps_build_wfa_ext(msg, 0, NULL, 0)) {
1905 wpabuf_free(msg);
1906 return NULL;
1907 }
1908
1909 wps->state = RECV_M2D_ACK;
1910 return msg;
1911}
1912
1913
1914static struct wpabuf * wps_build_m4(struct wps_data *wps)
1915{
1916 struct wpabuf *msg, *plain;
1917
1918 wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1919
1920 wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
1921
1922 plain = wpabuf_alloc(200);
1923 if (plain == NULL)
1924 return NULL;
1925
1926 msg = wpabuf_alloc(1000);
1927 if (msg == NULL) {
1928 wpabuf_free(plain);
1929 return NULL;
1930 }
1931
1932 if (wps_build_version(msg) ||
1933 wps_build_msg_type(msg, WPS_M4) ||
1934 wps_build_enrollee_nonce(wps, msg) ||
1935 wps_build_r_hash(wps, msg) ||
1936 wps_build_r_snonce1(wps, plain) ||
1937 wps_build_key_wrap_auth(wps, plain) ||
1938 wps_build_encr_settings(wps, msg, plain) ||
1939 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1940 wps_build_authenticator(wps, msg)) {
1941 wpabuf_free(plain);
1942 wpabuf_free(msg);
1943 return NULL;
1944 }
1945 wpabuf_free(plain);
1946
1947 wps->state = RECV_M5;
1948 return msg;
1949}
1950
1951
1952static struct wpabuf * wps_build_m6(struct wps_data *wps)
1953{
1954 struct wpabuf *msg, *plain;
1955
1956 wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1957
1958 plain = wpabuf_alloc(200);
1959 if (plain == NULL)
1960 return NULL;
1961
1962 msg = wpabuf_alloc(1000);
1963 if (msg == NULL) {
1964 wpabuf_free(plain);
1965 return NULL;
1966 }
1967
1968 if (wps_build_version(msg) ||
1969 wps_build_msg_type(msg, WPS_M6) ||
1970 wps_build_enrollee_nonce(wps, msg) ||
1971 wps_build_r_snonce2(wps, plain) ||
1972 wps_build_key_wrap_auth(wps, plain) ||
1973 wps_build_encr_settings(wps, msg, plain) ||
1974 wps_build_wfa_ext(msg, 0, NULL, 0) ||
1975 wps_build_authenticator(wps, msg)) {
1976 wpabuf_free(plain);
1977 wpabuf_free(msg);
1978 return NULL;
1979 }
1980 wpabuf_free(plain);
1981
1982 wps->wps_pin_revealed = 1;
1983 wps->state = RECV_M7;
1984 return msg;
1985}
1986
1987
1988static struct wpabuf * wps_build_m8(struct wps_data *wps)
1989{
1990 struct wpabuf *msg, *plain;
1991
1992 wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
1993
1994 plain = wpabuf_alloc(500);
1995 if (plain == NULL)
1996 return NULL;
1997
1998 msg = wpabuf_alloc(1000);
1999 if (msg == NULL) {
2000 wpabuf_free(plain);
2001 return NULL;
2002 }
2003
2004 if (wps_build_version(msg) ||
2005 wps_build_msg_type(msg, WPS_M8) ||
2006 wps_build_enrollee_nonce(wps, msg) ||
2007 ((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
2008 (!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
2009 wps_build_key_wrap_auth(wps, plain) ||
2010 wps_build_encr_settings(wps, msg, plain) ||
2011 wps_build_wfa_ext(msg, 0, NULL, 0) ||
2012 wps_build_authenticator(wps, msg)) {
2013 wpabuf_free(plain);
2014 wpabuf_free(msg);
2015 return NULL;
2016 }
2017 wpabuf_free(plain);
2018
2019 wps->state = RECV_DONE;
2020 return msg;
2021}
2022
2023
2024struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
2025 enum wsc_op_code *op_code)
2026{
2027 struct wpabuf *msg;
2028
2029#ifdef CONFIG_WPS_UPNP
2030 if (!wps->int_reg && wps->wps->wps_upnp) {
2031 struct upnp_pending_message *p, *prev = NULL;
2032 if (wps->ext_reg > 1)
2033 wps_registrar_free_pending_m2(wps->wps);
2034 p = wps->wps->upnp_msgs;
2035 /* TODO: check pending message MAC address */
2036 while (p && p->next) {
2037 prev = p;
2038 p = p->next;
2039 }
2040 if (p) {
2041 wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
2042 "UPnP");
2043 if (prev)
2044 prev->next = NULL;
2045 else
2046 wps->wps->upnp_msgs = NULL;
2047 msg = p->msg;
2048 switch (p->type) {
2049 case WPS_WSC_ACK:
2050 *op_code = WSC_ACK;
2051 break;
2052 case WPS_WSC_NACK:
2053 *op_code = WSC_NACK;
2054 break;
2055 default:
2056 *op_code = WSC_MSG;
2057 break;
2058 }
2059 os_free(p);
2060 if (wps->ext_reg == 0)
2061 wps->ext_reg = 1;
2062 return msg;
2063 }
2064 }
2065 if (wps->ext_reg) {
2066 wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
2067 "pending message available");
2068 return NULL;
2069 }
2070#endif /* CONFIG_WPS_UPNP */
2071
2072 switch (wps->state) {
2073 case SEND_M2:
2074 if (wps_get_dev_password(wps) < 0)
2075 msg = wps_build_m2d(wps);
2076 else
2077 msg = wps_build_m2(wps);
2078 *op_code = WSC_MSG;
2079 break;
2080 case SEND_M2D:
2081 msg = wps_build_m2d(wps);
2082 *op_code = WSC_MSG;
2083 break;
2084 case SEND_M4:
2085 msg = wps_build_m4(wps);
2086 *op_code = WSC_MSG;
2087 break;
2088 case SEND_M6:
2089 msg = wps_build_m6(wps);
2090 *op_code = WSC_MSG;
2091 break;
2092 case SEND_M8:
2093 msg = wps_build_m8(wps);
2094 *op_code = WSC_MSG;
2095 break;
2096 case RECV_DONE:
2097 msg = wps_build_wsc_ack(wps);
2098 *op_code = WSC_ACK;
2099 break;
2100 case SEND_WSC_NACK:
2101 msg = wps_build_wsc_nack(wps);
2102 *op_code = WSC_NACK;
2103 break;
2104 default:
2105 wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
2106 "a message", wps->state);
2107 msg = NULL;
2108 break;
2109 }
2110
2111 if (*op_code == WSC_MSG && msg) {
2112 /* Save a copy of the last message for Authenticator derivation
2113 */
2114 wpabuf_free(wps->last_msg);
2115 wps->last_msg = wpabuf_dup(msg);
2116 }
2117
2118 return msg;
2119}
2120
2121
2122static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
2123{
2124 if (e_nonce == NULL) {
2125 wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
2126 return -1;
2127 }
2128
2129 os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
2130 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
2131 wps->nonce_e, WPS_NONCE_LEN);
2132
2133 return 0;
2134}
2135
2136
2137static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
2138{
2139 if (r_nonce == NULL) {
2140 wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
2141 return -1;
2142 }
2143
2144 if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
2145 wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
2146 return -1;
2147 }
2148
2149 return 0;
2150}
2151
2152
2153static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
2154{
2155 if (uuid_e == NULL) {
2156 wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
2157 return -1;
2158 }
2159
2160 os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
2161 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
2162
2163 return 0;
2164}
2165
2166
2167static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
2168{
2169 if (pw_id == NULL) {
2170 wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
2171 return -1;
2172 }
2173
2174 wps->dev_pw_id = WPA_GET_BE16(pw_id);
2175 wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
2176
2177 return 0;
2178}
2179
2180
2181static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
2182{
2183 if (e_hash1 == NULL) {
2184 wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
2185 return -1;
2186 }
2187
2188 os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
2189 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
2190
2191 return 0;
2192}
2193
2194
2195static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
2196{
2197 if (e_hash2 == NULL) {
2198 wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
2199 return -1;
2200 }
2201
2202 os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
2203 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
2204
2205 return 0;
2206}
2207
2208
2209static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
2210{
2211 u8 hash[SHA256_MAC_LEN];
2212 const u8 *addr[4];
2213 size_t len[4];
2214
2215 if (e_snonce1 == NULL) {
2216 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
2217 return -1;
2218 }
2219
2220 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
2221 WPS_SECRET_NONCE_LEN);
2222
2223 /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
2224 addr[0] = e_snonce1;
2225 len[0] = WPS_SECRET_NONCE_LEN;
2226 addr[1] = wps->psk1;
2227 len[1] = WPS_PSK_LEN;
2228 addr[2] = wpabuf_head(wps->dh_pubkey_e);
2229 len[2] = wpabuf_len(wps->dh_pubkey_e);
2230 addr[3] = wpabuf_head(wps->dh_pubkey_r);
2231 len[3] = wpabuf_len(wps->dh_pubkey_r);
2232 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2233
Dmitry Shmidtc2817022014-07-02 10:32:10 -07002234 if (os_memcmp_const(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002235 wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
2236 "not match with the pre-committed value");
2237 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002238 wps_pwd_auth_fail_event(wps->wps, 0, 1, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002239 return -1;
2240 }
2241
2242 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
2243 "half of the device password");
2244
2245 return 0;
2246}
2247
2248
2249static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
2250{
2251 u8 hash[SHA256_MAC_LEN];
2252 const u8 *addr[4];
2253 size_t len[4];
2254
2255 if (e_snonce2 == NULL) {
2256 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
2257 return -1;
2258 }
2259
2260 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
2261 WPS_SECRET_NONCE_LEN);
2262
2263 /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
2264 addr[0] = e_snonce2;
2265 len[0] = WPS_SECRET_NONCE_LEN;
2266 addr[1] = wps->psk2;
2267 len[1] = WPS_PSK_LEN;
2268 addr[2] = wpabuf_head(wps->dh_pubkey_e);
2269 len[2] = wpabuf_len(wps->dh_pubkey_e);
2270 addr[3] = wpabuf_head(wps->dh_pubkey_r);
2271 len[3] = wpabuf_len(wps->dh_pubkey_r);
2272 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2273
Dmitry Shmidtc2817022014-07-02 10:32:10 -07002274 if (os_memcmp_const(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002275 wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
2276 "not match with the pre-committed value");
2277 wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2278 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002279 wps_pwd_auth_fail_event(wps->wps, 0, 2, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002280 return -1;
2281 }
2282
2283 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
2284 "half of the device password");
2285 wps->wps_pin_revealed = 0;
2286 wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
2287
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002288 /*
2289 * In case wildcard PIN is used and WPS handshake succeeds in the first
2290 * attempt, wps_registrar_unlock_pin() would not free the PIN, so make
2291 * sure the PIN gets invalidated here.
2292 */
2293 wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2294
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002295 return 0;
2296}
2297
2298
2299static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
2300{
2301 if (mac_addr == NULL) {
2302 wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
2303 return -1;
2304 }
2305
2306 wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
2307 MAC2STR(mac_addr));
2308 os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
2309 os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
2310
2311 return 0;
2312}
2313
2314
2315static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
2316 size_t pk_len)
2317{
2318 if (pk == NULL || pk_len == 0) {
2319 wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
2320 return -1;
2321 }
2322
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002323 wpabuf_free(wps->dh_pubkey_e);
2324 wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
2325 if (wps->dh_pubkey_e == NULL)
2326 return -1;
2327
2328 return 0;
2329}
2330
2331
2332static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
2333{
2334 u16 auth_types;
2335
2336 if (auth == NULL) {
2337 wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
2338 "received");
2339 return -1;
2340 }
2341
2342 auth_types = WPA_GET_BE16(auth);
2343
2344 wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
2345 auth_types);
2346 wps->auth_type = wps->wps->auth_types & auth_types;
2347 if (wps->auth_type == 0) {
2348 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2349 "authentication types (own 0x%x Enrollee 0x%x)",
2350 wps->wps->auth_types, auth_types);
2351#ifdef WPS_WORKAROUNDS
2352 /*
2353 * Some deployed implementations seem to advertise incorrect
2354 * information in this attribute. For example, Linksys WRT350N
2355 * seems to have a byteorder bug that breaks this negotiation.
2356 * In order to interoperate with existing implementations,
2357 * assume that the Enrollee supports everything we do.
2358 */
2359 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2360 "does not advertise supported authentication types "
2361 "correctly");
2362 wps->auth_type = wps->wps->auth_types;
2363#else /* WPS_WORKAROUNDS */
2364 return -1;
2365#endif /* WPS_WORKAROUNDS */
2366 }
2367
2368 return 0;
2369}
2370
2371
2372static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
2373{
2374 u16 encr_types;
2375
2376 if (encr == NULL) {
2377 wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
2378 "received");
2379 return -1;
2380 }
2381
2382 encr_types = WPA_GET_BE16(encr);
2383
2384 wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
2385 encr_types);
2386 wps->encr_type = wps->wps->encr_types & encr_types;
2387 if (wps->encr_type == 0) {
2388 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2389 "encryption types (own 0x%x Enrollee 0x%x)",
2390 wps->wps->encr_types, encr_types);
2391#ifdef WPS_WORKAROUNDS
2392 /*
2393 * Some deployed implementations seem to advertise incorrect
2394 * information in this attribute. For example, Linksys WRT350N
2395 * seems to have a byteorder bug that breaks this negotiation.
2396 * In order to interoperate with existing implementations,
2397 * assume that the Enrollee supports everything we do.
2398 */
2399 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2400 "does not advertise supported encryption types "
2401 "correctly");
2402 wps->encr_type = wps->wps->encr_types;
2403#else /* WPS_WORKAROUNDS */
2404 return -1;
2405#endif /* WPS_WORKAROUNDS */
2406 }
2407
2408 return 0;
2409}
2410
2411
2412static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
2413{
2414 if (conn == NULL) {
2415 wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
2416 "received");
2417 return -1;
2418 }
2419
2420 wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
2421 *conn);
2422
2423 return 0;
2424}
2425
2426
2427static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
2428{
2429 u16 m;
2430
2431 if (methods == NULL) {
2432 wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
2433 return -1;
2434 }
2435
2436 m = WPA_GET_BE16(methods);
2437
2438 wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
2439 "%s%s%s%s%s%s%s%s%s", m,
2440 m & WPS_CONFIG_USBA ? " [USBA]" : "",
2441 m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
2442 m & WPS_CONFIG_LABEL ? " [Label]" : "",
2443 m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
2444 m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
2445 m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
2446 m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
2447 m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
2448 m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
2449
2450 if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
2451 /*
2452 * The Enrollee does not have a display so it is unlikely to be
2453 * able to show the passphrase to a user and as such, could
2454 * benefit from receiving PSK to reduce key derivation time.
2455 */
2456 wpa_printf(MSG_DEBUG, "WPS: Prefer PSK format key due to "
2457 "Enrollee not supporting display");
2458 wps->use_psk_key = 1;
2459 }
2460
2461 return 0;
2462}
2463
2464
2465static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
2466{
2467 if (state == NULL) {
2468 wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
2469 "received");
2470 return -1;
2471 }
2472
2473 wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
2474 *state);
2475
2476 return 0;
2477}
2478
2479
2480static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
2481{
2482 u16 a;
2483
2484 if (assoc == NULL) {
2485 wpa_printf(MSG_DEBUG, "WPS: No Association State received");
2486 return -1;
2487 }
2488
2489 a = WPA_GET_BE16(assoc);
2490 wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
2491
2492 return 0;
2493}
2494
2495
2496static int wps_process_config_error(struct wps_data *wps, const u8 *err)
2497{
2498 u16 e;
2499
2500 if (err == NULL) {
2501 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2502 return -1;
2503 }
2504
2505 e = WPA_GET_BE16(err);
2506 wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2507
2508 return 0;
2509}
2510
2511
2512static int wps_registrar_p2p_dev_addr_match(struct wps_data *wps)
2513{
2514#ifdef CONFIG_P2P
2515 struct wps_registrar *reg = wps->wps->registrar;
2516
2517 if (is_zero_ether_addr(reg->p2p_dev_addr))
2518 return 1; /* no filtering in use */
2519
2520 if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) != 0) {
2521 wpa_printf(MSG_DEBUG, "WPS: No match on P2P Device Address "
2522 "filtering for PBC: expected " MACSTR " was "
2523 MACSTR " - indicate PBC session overlap",
2524 MAC2STR(reg->p2p_dev_addr),
2525 MAC2STR(wps->p2p_dev_addr));
2526 return 0;
2527 }
2528#endif /* CONFIG_P2P */
2529 return 1;
2530}
2531
2532
2533static int wps_registrar_skip_overlap(struct wps_data *wps)
2534{
2535#ifdef CONFIG_P2P
2536 struct wps_registrar *reg = wps->wps->registrar;
2537
2538 if (is_zero_ether_addr(reg->p2p_dev_addr))
2539 return 0; /* no specific Enrollee selected */
2540
2541 if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) == 0) {
2542 wpa_printf(MSG_DEBUG, "WPS: Skip PBC overlap due to selected "
2543 "Enrollee match");
2544 return 1;
2545 }
2546#endif /* CONFIG_P2P */
2547 return 0;
2548}
2549
2550
2551static enum wps_process_res wps_process_m1(struct wps_data *wps,
2552 struct wps_parse_attr *attr)
2553{
2554 wpa_printf(MSG_DEBUG, "WPS: Received M1");
2555
2556 if (wps->state != RECV_M1) {
2557 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2558 "receiving M1", wps->state);
2559 return WPS_FAILURE;
2560 }
2561
2562 if (wps_process_uuid_e(wps, attr->uuid_e) ||
2563 wps_process_mac_addr(wps, attr->mac_addr) ||
2564 wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2565 wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2566 wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2567 wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2568 wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2569 wps_process_config_methods(wps, attr->config_methods) ||
2570 wps_process_wps_state(wps, attr->wps_state) ||
2571 wps_process_device_attrs(&wps->peer_dev, attr) ||
2572 wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2573 wps_process_assoc_state(wps, attr->assoc_state) ||
2574 wps_process_dev_password_id(wps, attr->dev_password_id) ||
2575 wps_process_config_error(wps, attr->config_error) ||
2576 wps_process_os_version(&wps->peer_dev, attr->os_version))
2577 return WPS_FAILURE;
2578
2579 if (wps->dev_pw_id < 0x10 &&
2580 wps->dev_pw_id != DEV_PW_DEFAULT &&
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002581 wps->dev_pw_id != DEV_PW_P2PS_DEFAULT &&
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002582 wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2583 wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2584 wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002585#ifdef CONFIG_WPS_NFC
2586 wps->dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER &&
2587#endif /* CONFIG_WPS_NFC */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002588 (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2589 !wps->wps->registrar->pbc)) {
2590 wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2591 wps->dev_pw_id);
2592 wps->state = SEND_M2D;
2593 return WPS_CONTINUE;
2594 }
2595
Dmitry Shmidt04949592012-07-19 12:16:46 -07002596#ifdef CONFIG_WPS_NFC
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002597 if (wps->dev_pw_id >= 0x10 ||
2598 wps->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07002599 struct wps_nfc_pw_token *token;
2600 const u8 *addr[1];
2601 u8 hash[WPS_HASH_LEN];
2602
Dmitry Shmidt54605472013-11-08 11:10:19 -08002603 wpa_printf(MSG_DEBUG, "WPS: Searching for NFC token match for id=%d (ctx %p registrar %p)",
2604 wps->dev_pw_id, wps->wps, wps->wps->registrar);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002605 token = wps_get_nfc_pw_token(
2606 &wps->wps->registrar->nfc_pw_tokens, wps->dev_pw_id);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002607 if (token && token->peer_pk_hash_known) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07002608 wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2609 "Password Token");
2610 dl_list_del(&token->list);
2611 wps->nfc_pw_token = token;
2612
2613 addr[0] = attr->public_key;
2614 sha256_vector(1, addr, &attr->public_key_len, hash);
Dmitry Shmidtc2817022014-07-02 10:32:10 -07002615 if (os_memcmp_const(hash,
2616 wps->nfc_pw_token->pubkey_hash,
2617 WPS_OOB_PUBKEY_HASH_LEN) != 0) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07002618 wpa_printf(MSG_ERROR, "WPS: Public Key hash "
2619 "mismatch");
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002620 wps->state = SEND_M2D;
2621 wps->config_error =
2622 WPS_CFG_PUBLIC_KEY_HASH_MISMATCH;
2623 return WPS_CONTINUE;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002624 }
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002625 } else if (token) {
2626 wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2627 "Password Token (no peer PK hash)");
2628 wps->nfc_pw_token = token;
2629 } else if (wps->dev_pw_id >= 0x10 &&
2630 wps->wps->ap_nfc_dev_pw_id == wps->dev_pw_id &&
2631 wps->wps->ap_nfc_dev_pw) {
2632 wpa_printf(MSG_DEBUG, "WPS: Found match with own NFC Password Token");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002633 }
2634 }
2635#endif /* CONFIG_WPS_NFC */
2636
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002637 if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2638 if ((wps->wps->registrar->force_pbc_overlap ||
2639 wps_registrar_pbc_overlap(wps->wps->registrar,
2640 wps->mac_addr_e, wps->uuid_e) ||
2641 !wps_registrar_p2p_dev_addr_match(wps)) &&
2642 !wps_registrar_skip_overlap(wps)) {
2643 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2644 "negotiation");
2645 wps->state = SEND_M2D;
2646 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2647 wps_pbc_overlap_event(wps->wps);
2648 wps_fail_event(wps->wps, WPS_M1,
2649 WPS_CFG_MULTIPLE_PBC_DETECTED,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002650 WPS_EI_NO_ERROR, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002651 wps->wps->registrar->force_pbc_overlap = 1;
2652 return WPS_CONTINUE;
2653 }
2654 wps_registrar_add_pbc_session(wps->wps->registrar,
2655 wps->mac_addr_e, wps->uuid_e);
2656 wps->pbc = 1;
2657 }
2658
2659#ifdef WPS_WORKAROUNDS
2660 /*
2661 * It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
2662 * passphrase format. To avoid interop issues, force PSK format to be
2663 * used.
2664 */
2665 if (!wps->use_psk_key &&
2666 wps->peer_dev.manufacturer &&
2667 os_strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
2668 wps->peer_dev.model_name &&
2669 os_strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
2670 wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
2671 "PSK format");
2672 wps->use_psk_key = 1;
2673 }
2674#endif /* WPS_WORKAROUNDS */
2675
2676 wps->state = SEND_M2;
2677 return WPS_CONTINUE;
2678}
2679
2680
2681static enum wps_process_res wps_process_m3(struct wps_data *wps,
2682 const struct wpabuf *msg,
2683 struct wps_parse_attr *attr)
2684{
2685 wpa_printf(MSG_DEBUG, "WPS: Received M3");
2686
2687 if (wps->state != RECV_M3) {
2688 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2689 "receiving M3", wps->state);
2690 wps->state = SEND_WSC_NACK;
2691 return WPS_CONTINUE;
2692 }
2693
2694 if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2695 !wps_registrar_skip_overlap(wps)) {
2696 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2697 "session overlap");
2698 wps->state = SEND_WSC_NACK;
2699 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2700 return WPS_CONTINUE;
2701 }
2702
2703 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2704 wps_process_authenticator(wps, attr->authenticator, msg) ||
2705 wps_process_e_hash1(wps, attr->e_hash1) ||
2706 wps_process_e_hash2(wps, attr->e_hash2)) {
2707 wps->state = SEND_WSC_NACK;
2708 return WPS_CONTINUE;
2709 }
2710
2711 wps->state = SEND_M4;
2712 return WPS_CONTINUE;
2713}
2714
2715
2716static enum wps_process_res wps_process_m5(struct wps_data *wps,
2717 const struct wpabuf *msg,
2718 struct wps_parse_attr *attr)
2719{
2720 struct wpabuf *decrypted;
2721 struct wps_parse_attr eattr;
2722
2723 wpa_printf(MSG_DEBUG, "WPS: Received M5");
2724
2725 if (wps->state != RECV_M5) {
2726 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2727 "receiving M5", wps->state);
2728 wps->state = SEND_WSC_NACK;
2729 return WPS_CONTINUE;
2730 }
2731
2732 if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2733 !wps_registrar_skip_overlap(wps)) {
2734 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2735 "session overlap");
2736 wps->state = SEND_WSC_NACK;
2737 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2738 return WPS_CONTINUE;
2739 }
2740
2741 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2742 wps_process_authenticator(wps, attr->authenticator, msg)) {
2743 wps->state = SEND_WSC_NACK;
2744 return WPS_CONTINUE;
2745 }
2746
2747 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2748 attr->encr_settings_len);
2749 if (decrypted == NULL) {
2750 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2751 "Settings attribute");
2752 wps->state = SEND_WSC_NACK;
2753 return WPS_CONTINUE;
2754 }
2755
2756 if (wps_validate_m5_encr(decrypted, attr->version2 != NULL) < 0) {
2757 wpabuf_free(decrypted);
2758 wps->state = SEND_WSC_NACK;
2759 return WPS_CONTINUE;
2760 }
2761
2762 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2763 "attribute");
2764 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2765 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2766 wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2767 wpabuf_free(decrypted);
2768 wps->state = SEND_WSC_NACK;
2769 return WPS_CONTINUE;
2770 }
2771 wpabuf_free(decrypted);
2772
2773 wps->state = SEND_M6;
2774 return WPS_CONTINUE;
2775}
2776
2777
2778static void wps_sta_cred_cb(struct wps_data *wps)
2779{
2780 /*
2781 * Update credential to only include a single authentication and
2782 * encryption type in case the AP configuration includes more than one
2783 * option.
2784 */
2785 if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2786 wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2787 else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2788 wps->cred.auth_type = WPS_AUTH_WPAPSK;
2789 if (wps->cred.encr_type & WPS_ENCR_AES)
2790 wps->cred.encr_type = WPS_ENCR_AES;
2791 else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2792 wps->cred.encr_type = WPS_ENCR_TKIP;
2793 wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2794 "AP configuration");
2795 if (wps->wps->cred_cb)
2796 wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2797}
2798
2799
2800static void wps_cred_update(struct wps_credential *dst,
2801 struct wps_credential *src)
2802{
2803 os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2804 dst->ssid_len = src->ssid_len;
2805 dst->auth_type = src->auth_type;
2806 dst->encr_type = src->encr_type;
2807 dst->key_idx = src->key_idx;
2808 os_memcpy(dst->key, src->key, sizeof(dst->key));
2809 dst->key_len = src->key_len;
2810}
2811
2812
2813static int wps_process_ap_settings_r(struct wps_data *wps,
2814 struct wps_parse_attr *attr)
2815{
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002816 struct wpabuf *msg;
2817
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002818 if (wps->wps->ap || wps->er)
2819 return 0;
2820
2821 /* AP Settings Attributes in M7 when Enrollee is an AP */
2822 if (wps_process_ap_settings(attr, &wps->cred) < 0)
2823 return -1;
2824
2825 wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2826
2827 if (wps->new_ap_settings) {
2828 wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2829 "new settings");
2830 wps_cred_update(&wps->cred, wps->new_ap_settings);
2831 return 0;
2832 } else {
2833 /*
2834 * Use the AP PIN only to receive the current AP settings, not
2835 * to reconfigure the AP.
2836 */
2837
2838 /*
2839 * Clear selected registrar here since we do not get to
2840 * WSC_Done in this protocol run.
2841 */
2842 wps_registrar_pin_completed(wps->wps->registrar);
2843
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002844 msg = wps_build_ap_cred(wps);
2845 if (msg == NULL)
2846 return -1;
2847 wps->cred.cred_attr = wpabuf_head(msg);
2848 wps->cred.cred_attr_len = wpabuf_len(msg);
2849
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002850 if (wps->ap_settings_cb) {
2851 wps->ap_settings_cb(wps->ap_settings_cb_ctx,
2852 &wps->cred);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002853 wpabuf_free(msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002854 return 1;
2855 }
2856 wps_sta_cred_cb(wps);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002857
2858 wps->cred.cred_attr = NULL;
2859 wps->cred.cred_attr_len = 0;
2860 wpabuf_free(msg);
2861
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002862 return 1;
2863 }
2864}
2865
2866
2867static enum wps_process_res wps_process_m7(struct wps_data *wps,
2868 const struct wpabuf *msg,
2869 struct wps_parse_attr *attr)
2870{
2871 struct wpabuf *decrypted;
2872 struct wps_parse_attr eattr;
2873
2874 wpa_printf(MSG_DEBUG, "WPS: Received M7");
2875
2876 if (wps->state != RECV_M7) {
2877 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2878 "receiving M7", wps->state);
2879 wps->state = SEND_WSC_NACK;
2880 return WPS_CONTINUE;
2881 }
2882
2883 if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2884 !wps_registrar_skip_overlap(wps)) {
2885 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2886 "session overlap");
2887 wps->state = SEND_WSC_NACK;
2888 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2889 return WPS_CONTINUE;
2890 }
2891
2892 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2893 wps_process_authenticator(wps, attr->authenticator, msg)) {
2894 wps->state = SEND_WSC_NACK;
2895 return WPS_CONTINUE;
2896 }
2897
2898 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2899 attr->encr_settings_len);
2900 if (decrypted == NULL) {
2901 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt Encrypted "
2902 "Settings attribute");
2903 wps->state = SEND_WSC_NACK;
2904 return WPS_CONTINUE;
2905 }
2906
2907 if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er,
2908 attr->version2 != NULL) < 0) {
2909 wpabuf_free(decrypted);
2910 wps->state = SEND_WSC_NACK;
2911 return WPS_CONTINUE;
2912 }
2913
2914 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2915 "attribute");
2916 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2917 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2918 wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2919 wps_process_ap_settings_r(wps, &eattr)) {
2920 wpabuf_free(decrypted);
2921 wps->state = SEND_WSC_NACK;
2922 return WPS_CONTINUE;
2923 }
2924
2925 wpabuf_free(decrypted);
2926
2927 wps->state = SEND_M8;
2928 return WPS_CONTINUE;
2929}
2930
2931
2932static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2933 const struct wpabuf *msg)
2934{
2935 struct wps_parse_attr attr;
2936 enum wps_process_res ret = WPS_CONTINUE;
2937
2938 wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2939
2940 if (wps_parse_msg(msg, &attr) < 0)
2941 return WPS_FAILURE;
2942
2943 if (attr.msg_type == NULL) {
2944 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2945 wps->state = SEND_WSC_NACK;
2946 return WPS_CONTINUE;
2947 }
2948
2949 if (*attr.msg_type != WPS_M1 &&
2950 (attr.registrar_nonce == NULL ||
2951 os_memcmp(wps->nonce_r, attr.registrar_nonce,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002952 WPS_NONCE_LEN) != 0)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002953 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2954 return WPS_FAILURE;
2955 }
2956
2957 switch (*attr.msg_type) {
2958 case WPS_M1:
2959 if (wps_validate_m1(msg) < 0)
2960 return WPS_FAILURE;
2961#ifdef CONFIG_WPS_UPNP
2962 if (wps->wps->wps_upnp && attr.mac_addr) {
2963 /* Remove old pending messages when starting new run */
2964 wps_free_pending_msgs(wps->wps->upnp_msgs);
2965 wps->wps->upnp_msgs = NULL;
2966
2967 upnp_wps_device_send_wlan_event(
2968 wps->wps->wps_upnp, attr.mac_addr,
2969 UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
2970 }
2971#endif /* CONFIG_WPS_UPNP */
2972 ret = wps_process_m1(wps, &attr);
2973 break;
2974 case WPS_M3:
2975 if (wps_validate_m3(msg) < 0)
2976 return WPS_FAILURE;
2977 ret = wps_process_m3(wps, msg, &attr);
2978 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2979 wps_fail_event(wps->wps, WPS_M3, wps->config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002980 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002981 break;
2982 case WPS_M5:
2983 if (wps_validate_m5(msg) < 0)
2984 return WPS_FAILURE;
2985 ret = wps_process_m5(wps, msg, &attr);
2986 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2987 wps_fail_event(wps->wps, WPS_M5, wps->config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002988 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002989 break;
2990 case WPS_M7:
2991 if (wps_validate_m7(msg) < 0)
2992 return WPS_FAILURE;
2993 ret = wps_process_m7(wps, msg, &attr);
2994 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2995 wps_fail_event(wps->wps, WPS_M7, wps->config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07002996 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002997 break;
2998 default:
2999 wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
3000 *attr.msg_type);
3001 return WPS_FAILURE;
3002 }
3003
3004 if (ret == WPS_CONTINUE) {
3005 /* Save a copy of the last message for Authenticator derivation
3006 */
3007 wpabuf_free(wps->last_msg);
3008 wps->last_msg = wpabuf_dup(msg);
3009 }
3010
3011 return ret;
3012}
3013
3014
3015static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
3016 const struct wpabuf *msg)
3017{
3018 struct wps_parse_attr attr;
3019
3020 wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
3021
3022 if (wps_parse_msg(msg, &attr) < 0)
3023 return WPS_FAILURE;
3024
3025 if (attr.msg_type == NULL) {
3026 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3027 return WPS_FAILURE;
3028 }
3029
3030 if (*attr.msg_type != WPS_WSC_ACK) {
3031 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3032 *attr.msg_type);
3033 return WPS_FAILURE;
3034 }
3035
3036#ifdef CONFIG_WPS_UPNP
3037 if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
3038 upnp_wps_subscribers(wps->wps->wps_upnp)) {
3039 if (wps->wps->upnp_msgs)
3040 return WPS_CONTINUE;
3041 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3042 "external Registrar");
3043 return WPS_PENDING;
3044 }
3045#endif /* CONFIG_WPS_UPNP */
3046
3047 if (attr.registrar_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003048 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003049 {
3050 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3051 return WPS_FAILURE;
3052 }
3053
3054 if (attr.enrollee_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003055 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003056 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3057 return WPS_FAILURE;
3058 }
3059
3060 if (wps->state == RECV_M2D_ACK) {
3061#ifdef CONFIG_WPS_UPNP
3062 if (wps->wps->wps_upnp &&
3063 upnp_wps_subscribers(wps->wps->wps_upnp)) {
3064 if (wps->wps->upnp_msgs)
3065 return WPS_CONTINUE;
3066 if (wps->ext_reg == 0)
3067 wps->ext_reg = 1;
3068 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
3069 "external Registrar");
3070 return WPS_PENDING;
3071 }
3072#endif /* CONFIG_WPS_UPNP */
3073
3074 wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
3075 "terminate negotiation");
3076 }
3077
3078 return WPS_FAILURE;
3079}
3080
3081
3082static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
3083 const struct wpabuf *msg)
3084{
3085 struct wps_parse_attr attr;
3086 int old_state;
3087 u16 config_error;
3088
3089 wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
3090
3091 old_state = wps->state;
3092 wps->state = SEND_WSC_NACK;
3093
3094 if (wps_parse_msg(msg, &attr) < 0)
3095 return WPS_FAILURE;
3096
3097 if (attr.msg_type == NULL) {
3098 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3099 return WPS_FAILURE;
3100 }
3101
3102 if (*attr.msg_type != WPS_WSC_NACK) {
3103 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3104 *attr.msg_type);
3105 return WPS_FAILURE;
3106 }
3107
3108#ifdef CONFIG_WPS_UPNP
3109 if (wps->wps->wps_upnp && wps->ext_reg) {
3110 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3111 "Registrar terminated by the Enrollee");
3112 return WPS_FAILURE;
3113 }
3114#endif /* CONFIG_WPS_UPNP */
3115
3116 if (attr.registrar_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003117 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003118 {
3119 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3120 return WPS_FAILURE;
3121 }
3122
3123 if (attr.enrollee_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003124 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003125 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3126 return WPS_FAILURE;
3127 }
3128
3129 if (attr.config_error == NULL) {
3130 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
3131 "in WSC_NACK");
3132 return WPS_FAILURE;
3133 }
3134
3135 config_error = WPA_GET_BE16(attr.config_error);
3136 wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
3137 "Configuration Error %d", config_error);
3138
3139 switch (old_state) {
3140 case RECV_M3:
3141 wps_fail_event(wps->wps, WPS_M2, config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003142 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003143 break;
3144 case RECV_M5:
3145 wps_fail_event(wps->wps, WPS_M4, config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003146 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003147 break;
3148 case RECV_M7:
3149 wps_fail_event(wps->wps, WPS_M6, config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003150 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003151 break;
3152 case RECV_DONE:
3153 wps_fail_event(wps->wps, WPS_M8, config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003154 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003155 break;
3156 default:
3157 break;
3158 }
3159
3160 return WPS_FAILURE;
3161}
3162
3163
3164static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
3165 const struct wpabuf *msg)
3166{
3167 struct wps_parse_attr attr;
3168
3169 wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
3170
3171 if (wps->state != RECV_DONE &&
3172 (!wps->wps->wps_upnp || !wps->ext_reg)) {
3173 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
3174 "receiving WSC_Done", wps->state);
3175 return WPS_FAILURE;
3176 }
3177
3178 if (wps_parse_msg(msg, &attr) < 0)
3179 return WPS_FAILURE;
3180
3181 if (attr.msg_type == NULL) {
3182 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3183 return WPS_FAILURE;
3184 }
3185
3186 if (*attr.msg_type != WPS_WSC_DONE) {
3187 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3188 *attr.msg_type);
3189 return WPS_FAILURE;
3190 }
3191
3192#ifdef CONFIG_WPS_UPNP
3193 if (wps->wps->wps_upnp && wps->ext_reg) {
3194 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3195 "Registrar completed successfully");
3196 wps_device_store(wps->wps->registrar, &wps->peer_dev,
3197 wps->uuid_e);
3198 return WPS_DONE;
3199 }
3200#endif /* CONFIG_WPS_UPNP */
3201
3202 if (attr.registrar_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003203 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003204 {
3205 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3206 return WPS_FAILURE;
3207 }
3208
3209 if (attr.enrollee_nonce == NULL ||
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003210 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003211 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3212 return WPS_FAILURE;
3213 }
3214
3215 wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
3216 wps_device_store(wps->wps->registrar, &wps->peer_dev,
3217 wps->uuid_e);
3218
3219 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
3220 wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
3221 struct wps_credential cred;
3222
3223 wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
3224 "on first Enrollee connection");
3225
3226 os_memset(&cred, 0, sizeof(cred));
3227 os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
3228 cred.ssid_len = wps->wps->ssid_len;
3229 cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
3230 cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
3231 os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
3232 cred.key_len = wps->new_psk_len;
3233
3234 wps->wps->wps_state = WPS_STATE_CONFIGURED;
3235 wpa_hexdump_ascii_key(MSG_DEBUG,
3236 "WPS: Generated random passphrase",
3237 wps->new_psk, wps->new_psk_len);
3238 if (wps->wps->cred_cb)
3239 wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
3240
3241 os_free(wps->new_psk);
3242 wps->new_psk = NULL;
3243 }
3244
3245 if (!wps->wps->ap && !wps->er)
3246 wps_sta_cred_cb(wps);
3247
3248 if (wps->new_psk) {
3249 if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07003250 wps->p2p_dev_addr, wps->new_psk,
3251 wps->new_psk_len)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003252 wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
3253 "new PSK");
3254 }
3255 os_free(wps->new_psk);
3256 wps->new_psk = NULL;
3257 }
3258
Dmitry Shmidt04949592012-07-19 12:16:46 -07003259 wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e,
3260 wps->dev_password, wps->dev_password_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003261
3262 if (wps->pbc) {
3263 wps_registrar_remove_pbc_session(wps->wps->registrar,
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003264 wps->uuid_e,
3265 wps->p2p_dev_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003266 wps_registrar_pbc_completed(wps->wps->registrar);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003267#ifdef WPS_WORKAROUNDS
3268 os_get_reltime(&wps->wps->registrar->pbc_ignore_start);
3269#endif /* WPS_WORKAROUNDS */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003270 os_memcpy(wps->wps->registrar->pbc_ignore_uuid, wps->uuid_e,
3271 WPS_UUID_LEN);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003272 } else {
3273 wps_registrar_pin_completed(wps->wps->registrar);
3274 }
3275 /* TODO: maintain AuthorizedMACs somewhere separately for each ER and
3276 * merge them into APs own list.. */
3277
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003278 wps_success_event(wps->wps, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003279
3280 return WPS_DONE;
3281}
3282
3283
3284enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
3285 enum wsc_op_code op_code,
3286 const struct wpabuf *msg)
3287{
3288 enum wps_process_res ret;
3289
3290 wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
3291 "op_code=%d)",
3292 (unsigned long) wpabuf_len(msg), op_code);
3293
3294#ifdef CONFIG_WPS_UPNP
3295 if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
3296 struct wps_parse_attr attr;
3297 if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
3298 *attr.msg_type == WPS_M3)
3299 wps->ext_reg = 2; /* past M2/M2D phase */
3300 }
3301 if (wps->ext_reg > 1)
3302 wps_registrar_free_pending_m2(wps->wps);
3303 if (wps->wps->wps_upnp && wps->ext_reg &&
3304 wps->wps->upnp_msgs == NULL &&
3305 (op_code == WSC_MSG || op_code == WSC_Done || op_code == WSC_NACK))
3306 {
3307 struct wps_parse_attr attr;
3308 int type;
3309 if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
3310 type = -1;
3311 else
3312 type = *attr.msg_type;
3313 wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
3314 " to external Registrar for processing", type);
3315 upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
3316 wps->mac_addr_e,
3317 UPNP_WPS_WLANEVENT_TYPE_EAP,
3318 msg);
3319 if (op_code == WSC_MSG)
3320 return WPS_PENDING;
3321 } else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
3322 wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
3323 "external Registrar");
3324 return WPS_CONTINUE;
3325 }
3326#endif /* CONFIG_WPS_UPNP */
3327
3328 switch (op_code) {
3329 case WSC_MSG:
3330 return wps_process_wsc_msg(wps, msg);
3331 case WSC_ACK:
3332 if (wps_validate_wsc_ack(msg) < 0)
3333 return WPS_FAILURE;
3334 return wps_process_wsc_ack(wps, msg);
3335 case WSC_NACK:
3336 if (wps_validate_wsc_nack(msg) < 0)
3337 return WPS_FAILURE;
3338 return wps_process_wsc_nack(wps, msg);
3339 case WSC_Done:
3340 if (wps_validate_wsc_done(msg) < 0)
3341 return WPS_FAILURE;
3342 ret = wps_process_wsc_done(wps, msg);
3343 if (ret == WPS_FAILURE) {
3344 wps->state = SEND_WSC_NACK;
3345 wps_fail_event(wps->wps, WPS_WSC_DONE,
3346 wps->config_error,
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07003347 wps->error_indication, wps->mac_addr_e);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003348 }
3349 return ret;
3350 default:
3351 wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
3352 return WPS_FAILURE;
3353 }
3354}
3355
3356
3357int wps_registrar_update_ie(struct wps_registrar *reg)
3358{
3359 return wps_set_ie(reg);
3360}
3361
3362
3363static void wps_registrar_set_selected_timeout(void *eloop_ctx,
3364 void *timeout_ctx)
3365{
3366 struct wps_registrar *reg = eloop_ctx;
3367
3368 wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
3369 "unselect internal Registrar");
3370 reg->selected_registrar = 0;
3371 reg->pbc = 0;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003372 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003373}
3374
3375
3376#ifdef CONFIG_WPS_UPNP
3377static void wps_registrar_sel_reg_add(struct wps_registrar *reg,
3378 struct subscription *s)
3379{
3380 int i, j;
3381 wpa_printf(MSG_DEBUG, "WPS: External Registrar selected (dev_pw_id=%d "
3382 "config_methods=0x%x)",
3383 s->dev_password_id, s->config_methods);
3384 reg->sel_reg_union = 1;
3385 if (reg->sel_reg_dev_password_id_override != DEV_PW_PUSHBUTTON)
3386 reg->sel_reg_dev_password_id_override = s->dev_password_id;
3387 if (reg->sel_reg_config_methods_override == -1)
3388 reg->sel_reg_config_methods_override = 0;
3389 reg->sel_reg_config_methods_override |= s->config_methods;
3390 for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
3391 if (is_zero_ether_addr(reg->authorized_macs_union[i]))
3392 break;
3393 for (j = 0; i < WPS_MAX_AUTHORIZED_MACS && j < WPS_MAX_AUTHORIZED_MACS;
3394 j++) {
3395 if (is_zero_ether_addr(s->authorized_macs[j]))
3396 break;
3397 wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC into union: "
3398 MACSTR, MAC2STR(s->authorized_macs[j]));
3399 os_memcpy(reg->authorized_macs_union[i],
3400 s->authorized_macs[j], ETH_ALEN);
3401 i++;
3402 }
3403 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union",
3404 (u8 *) reg->authorized_macs_union,
3405 sizeof(reg->authorized_macs_union));
3406}
3407#endif /* CONFIG_WPS_UPNP */
3408
3409
3410static void wps_registrar_sel_reg_union(struct wps_registrar *reg)
3411{
3412#ifdef CONFIG_WPS_UPNP
3413 struct subscription *s;
3414
3415 if (reg->wps->wps_upnp == NULL)
3416 return;
3417
3418 dl_list_for_each(s, &reg->wps->wps_upnp->subscriptions,
3419 struct subscription, list) {
3420 struct subscr_addr *sa;
3421 sa = dl_list_first(&s->addr_list, struct subscr_addr, list);
3422 if (sa) {
3423 wpa_printf(MSG_DEBUG, "WPS: External Registrar %s:%d",
3424 inet_ntoa(sa->saddr.sin_addr),
3425 ntohs(sa->saddr.sin_port));
3426 }
3427 if (s->selected_registrar)
3428 wps_registrar_sel_reg_add(reg, s);
3429 else
3430 wpa_printf(MSG_DEBUG, "WPS: External Registrar not "
3431 "selected");
3432 }
3433#endif /* CONFIG_WPS_UPNP */
3434}
3435
3436
3437/**
3438 * wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
3439 * @reg: Registrar data from wps_registrar_init()
3440 *
3441 * This function is called when selected registrar state changes, e.g., when an
3442 * AP receives a SetSelectedRegistrar UPnP message.
3443 */
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003444void wps_registrar_selected_registrar_changed(struct wps_registrar *reg,
3445 u16 dev_pw_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003446{
3447 wpa_printf(MSG_DEBUG, "WPS: Selected registrar information changed");
3448
3449 reg->sel_reg_union = reg->selected_registrar;
3450 reg->sel_reg_dev_password_id_override = -1;
3451 reg->sel_reg_config_methods_override = -1;
3452 os_memcpy(reg->authorized_macs_union, reg->authorized_macs,
3453 WPS_MAX_AUTHORIZED_MACS * ETH_ALEN);
3454 wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union (start with own)",
3455 (u8 *) reg->authorized_macs_union,
3456 sizeof(reg->authorized_macs_union));
3457 if (reg->selected_registrar) {
3458 u16 methods;
3459
3460 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003461 methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
3462 WPS_CONFIG_PHY_PUSHBUTTON);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003463 if (reg->pbc) {
3464 reg->sel_reg_dev_password_id_override =
3465 DEV_PW_PUSHBUTTON;
3466 wps_set_pushbutton(&methods, reg->wps->config_methods);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003467 } else if (dev_pw_id)
3468 reg->sel_reg_dev_password_id_override = dev_pw_id;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003469 wpa_printf(MSG_DEBUG, "WPS: Internal Registrar selected "
3470 "(pbc=%d)", reg->pbc);
3471 reg->sel_reg_config_methods_override = methods;
3472 } else
3473 wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
3474
3475 wps_registrar_sel_reg_union(reg);
3476
3477 wps_set_ie(reg);
3478 wps_cb_set_sel_reg(reg);
3479}
3480
3481
3482int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
3483 char *buf, size_t buflen)
3484{
3485 struct wps_registrar_device *d;
3486 int len = 0, ret;
3487 char uuid[40];
3488 char devtype[WPS_DEV_TYPE_BUFSIZE];
3489
3490 d = wps_device_get(reg, addr);
3491 if (d == NULL)
3492 return 0;
3493 if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
3494 return 0;
3495
3496 ret = os_snprintf(buf + len, buflen - len,
3497 "wpsUuid=%s\n"
3498 "wpsPrimaryDeviceType=%s\n"
3499 "wpsDeviceName=%s\n"
3500 "wpsManufacturer=%s\n"
3501 "wpsModelName=%s\n"
3502 "wpsModelNumber=%s\n"
3503 "wpsSerialNumber=%s\n",
3504 uuid,
3505 wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
3506 sizeof(devtype)),
3507 d->dev.device_name ? d->dev.device_name : "",
3508 d->dev.manufacturer ? d->dev.manufacturer : "",
3509 d->dev.model_name ? d->dev.model_name : "",
3510 d->dev.model_number ? d->dev.model_number : "",
3511 d->dev.serial_number ? d->dev.serial_number : "");
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08003512 if (os_snprintf_error(buflen - len, ret))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003513 return len;
3514 len += ret;
3515
3516 return len;
3517}
3518
3519
3520int wps_registrar_config_ap(struct wps_registrar *reg,
3521 struct wps_credential *cred)
3522{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003523 wpa_printf(MSG_DEBUG, "WPS: encr_type=0x%x", cred->encr_type);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003524 if (!(cred->encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP |
3525 WPS_ENCR_AES))) {
3526 if (cred->encr_type & WPS_ENCR_WEP) {
3527 wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
3528 "due to WEP configuration");
3529 return -1;
3530 }
3531
3532 wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
3533 "invalid encr_type 0x%x", cred->encr_type);
3534 return -1;
3535 }
3536
3537 if ((cred->encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
3538 WPS_ENCR_TKIP) {
3539 wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
3540 "TKIP+AES");
3541 cred->encr_type |= WPS_ENCR_AES;
3542 }
3543
3544 if ((cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
3545 WPS_AUTH_WPAPSK) {
3546 wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
3547 "WPAPSK+WPA2PSK");
3548 cred->auth_type |= WPS_AUTH_WPA2PSK;
3549 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003550
3551 if (reg->wps->cred_cb)
3552 return reg->wps->cred_cb(reg->wps->cb_ctx, cred);
3553
3554 return -1;
3555}
Dmitry Shmidt04949592012-07-19 12:16:46 -07003556
3557
3558#ifdef CONFIG_WPS_NFC
3559
3560int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
3561 const u8 *pubkey_hash, u16 pw_id,
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003562 const u8 *dev_pw, size_t dev_pw_len,
3563 int pk_hash_provided_oob)
Dmitry Shmidt04949592012-07-19 12:16:46 -07003564{
3565 struct wps_nfc_pw_token *token;
3566
3567 if (dev_pw_len > WPS_OOB_DEVICE_PASSWORD_LEN)
3568 return -1;
3569
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003570 if (pw_id == DEV_PW_NFC_CONNECTION_HANDOVER &&
3571 (pubkey_hash == NULL || !pk_hash_provided_oob)) {
3572 wpa_printf(MSG_DEBUG, "WPS: Unexpected NFC Password Token "
3573 "addition - missing public key hash");
3574 return -1;
3575 }
3576
Dmitry Shmidt04949592012-07-19 12:16:46 -07003577 wps_free_nfc_pw_tokens(&reg->nfc_pw_tokens, pw_id);
3578
3579 token = os_zalloc(sizeof(*token));
3580 if (token == NULL)
3581 return -1;
3582
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003583 token->peer_pk_hash_known = pubkey_hash != NULL;
3584 if (pubkey_hash)
3585 os_memcpy(token->pubkey_hash, pubkey_hash,
3586 WPS_OOB_PUBKEY_HASH_LEN);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003587 token->pw_id = pw_id;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003588 token->pk_hash_provided_oob = pk_hash_provided_oob;
3589 if (dev_pw) {
3590 wpa_snprintf_hex_uppercase((char *) token->dev_pw,
3591 sizeof(token->dev_pw),
3592 dev_pw, dev_pw_len);
3593 token->dev_pw_len = dev_pw_len * 2;
3594 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003595
3596 dl_list_add(&reg->nfc_pw_tokens, &token->list);
3597
3598 reg->selected_registrar = 1;
3599 reg->pbc = 0;
3600 wps_registrar_add_authorized_mac(reg,
3601 (u8 *) "\xff\xff\xff\xff\xff\xff");
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003602 wps_registrar_selected_registrar_changed(reg, pw_id);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003603 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
3604 eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
3605 wps_registrar_set_selected_timeout,
3606 reg, NULL);
3607
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003608 wpa_printf(MSG_DEBUG, "WPS: Added NFC Device Password %u to Registrar",
3609 pw_id);
3610
Dmitry Shmidt04949592012-07-19 12:16:46 -07003611 return 0;
3612}
3613
3614
3615int wps_registrar_add_nfc_password_token(struct wps_registrar *reg,
3616 const u8 *oob_dev_pw,
3617 size_t oob_dev_pw_len)
3618{
3619 const u8 *pos, *hash, *dev_pw;
3620 u16 id;
3621 size_t dev_pw_len;
3622
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003623 if (oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2 ||
Dmitry Shmidt04949592012-07-19 12:16:46 -07003624 oob_dev_pw_len > WPS_OOB_PUBKEY_HASH_LEN + 2 +
3625 WPS_OOB_DEVICE_PASSWORD_LEN)
3626 return -1;
3627
3628 hash = oob_dev_pw;
3629 pos = oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN;
3630 id = WPA_GET_BE16(pos);
3631 dev_pw = pos + 2;
3632 dev_pw_len = oob_dev_pw + oob_dev_pw_len - dev_pw;
3633
3634 wpa_printf(MSG_DEBUG, "WPS: Add NFC Password Token for Password ID %u",
3635 id);
3636
3637 wpa_hexdump(MSG_DEBUG, "WPS: Public Key Hash",
3638 hash, WPS_OOB_PUBKEY_HASH_LEN);
3639 wpa_hexdump_key(MSG_DEBUG, "WPS: Device Password", dev_pw, dev_pw_len);
3640
3641 return wps_registrar_add_nfc_pw_token(reg, hash, id, dev_pw,
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003642 dev_pw_len, 0);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003643}
3644
3645
3646void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
3647 struct wps_nfc_pw_token *token)
3648{
3649 wps_registrar_remove_authorized_mac(reg,
3650 (u8 *) "\xff\xff\xff\xff\xff\xff");
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003651 wps_registrar_selected_registrar_changed(reg, 0);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003652
3653 /*
3654 * Free the NFC password token if it was used only for a single protocol
3655 * run. The static handover case uses the same password token multiple
3656 * times, so do not free that case here.
3657 */
3658 if (token->peer_pk_hash_known)
3659 os_free(token);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003660}
3661
3662#endif /* CONFIG_WPS_NFC */