1 /*
2 * Wi-Fi Protected Setup
3 * Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "crypto/dh_group5.h"
13 #include "common/ieee802_11_defs.h"
14 #include "wps_i.h"
15 #include "wps_dev_attr.h"
16
17
18 #ifdef CONFIG_WPS_TESTING
19 int wps_version_number = 0x20;
20 int wps_testing_dummy_cred = 0;
21 int wps_corrupt_pkhash = 0;
22 #endif /* CONFIG_WPS_TESTING */
23
24
25 /**
26 * wps_init - Initialize WPS Registration protocol data
27 * @cfg: WPS configuration
28 * Returns: Pointer to allocated data or %NULL on failure
29 *
30 * This function is used to initialize WPS data for a registration protocol
31 * instance (i.e., each run of registration protocol as a Registrar of
32 * Enrollee. The caller is responsible for freeing this data after the
33 * registration run has been completed by calling wps_deinit().
34 */
wps_init(const struct wps_config * cfg)35 struct wps_data * wps_init(const struct wps_config *cfg)
36 {
37 struct wps_data *data = os_zalloc(sizeof(*data));
38 if (data == NULL)
39 return NULL;
40 data->wps = cfg->wps;
41 data->registrar = cfg->registrar;
42 if (cfg->registrar) {
43 os_memcpy(data->uuid_r, cfg->wps->uuid, WPS_UUID_LEN);
44 } else {
45 os_memcpy(data->mac_addr_e, cfg->wps->dev.mac_addr, ETH_ALEN);
46 os_memcpy(data->uuid_e, cfg->wps->uuid, WPS_UUID_LEN);
47 }
48 if (cfg->pin) {
49 data->dev_pw_id = cfg->dev_pw_id;
50 data->dev_password = os_malloc(cfg->pin_len);
51 if (data->dev_password == NULL) {
52 os_free(data);
53 return NULL;
54 }
55 os_memcpy(data->dev_password, cfg->pin, cfg->pin_len);
56 data->dev_password_len = cfg->pin_len;
57 wpa_hexdump_key(MSG_DEBUG, "WPS: AP PIN dev_password",
58 data->dev_password, data->dev_password_len);
59 }
60
61 #ifdef CONFIG_WPS_NFC
62 if (cfg->pin == NULL &&
63 cfg->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
64 data->dev_pw_id = cfg->dev_pw_id;
65
66 if (cfg->wps->ap && !cfg->registrar && cfg->wps->ap_nfc_dev_pw_id) {
67 /* Keep AP PIN as alternative Device Password */
68 data->alt_dev_pw_id = data->dev_pw_id;
69 data->alt_dev_password = data->dev_password;
70 data->alt_dev_password_len = data->dev_password_len;
71
72 data->dev_pw_id = cfg->wps->ap_nfc_dev_pw_id;
73 data->dev_password =
74 os_malloc(wpabuf_len(cfg->wps->ap_nfc_dev_pw));
75 if (data->dev_password == NULL) {
76 os_free(data);
77 return NULL;
78 }
79 os_memcpy(data->dev_password,
80 wpabuf_head(cfg->wps->ap_nfc_dev_pw),
81 wpabuf_len(cfg->wps->ap_nfc_dev_pw));
82 data->dev_password_len = wpabuf_len(cfg->wps->ap_nfc_dev_pw);
83 wpa_hexdump_key(MSG_DEBUG, "WPS: NFC dev_password",
84 data->dev_password, data->dev_password_len);
85 }
86 #endif /* CONFIG_WPS_NFC */
87
88 data->pbc = cfg->pbc;
89 if (cfg->pbc) {
90 /* Use special PIN '00000000' for PBC */
91 data->dev_pw_id = DEV_PW_PUSHBUTTON;
92 bin_clear_free(data->dev_password, data->dev_password_len);
93 data->dev_password = (u8 *) os_strdup("00000000");
94 if (data->dev_password == NULL) {
95 os_free(data);
96 return NULL;
97 }
98 data->dev_password_len = 8;
99 }
100
101 data->state = data->registrar ? RECV_M1 : SEND_M1;
102
103 if (cfg->assoc_wps_ie) {
104 struct wps_parse_attr attr;
105 wpa_hexdump_buf(MSG_DEBUG, "WPS: WPS IE from (Re)AssocReq",
106 cfg->assoc_wps_ie);
107 if (wps_parse_msg(cfg->assoc_wps_ie, &attr) < 0) {
108 wpa_printf(MSG_DEBUG, "WPS: Failed to parse WPS IE "
109 "from (Re)AssocReq");
110 } else if (attr.request_type == NULL) {
111 wpa_printf(MSG_DEBUG, "WPS: No Request Type attribute "
112 "in (Re)AssocReq WPS IE");
113 } else {
114 wpa_printf(MSG_DEBUG, "WPS: Request Type (from WPS IE "
115 "in (Re)AssocReq WPS IE): %d",
116 *attr.request_type);
117 data->request_type = *attr.request_type;
118 }
119 }
120
121 if (cfg->new_ap_settings) {
122 data->new_ap_settings =
123 os_malloc(sizeof(*data->new_ap_settings));
124 if (data->new_ap_settings == NULL) {
125 bin_clear_free(data->dev_password,
126 data->dev_password_len);
127 os_free(data);
128 return NULL;
129 }
130 os_memcpy(data->new_ap_settings, cfg->new_ap_settings,
131 sizeof(*data->new_ap_settings));
132 }
133
134 if (cfg->peer_addr)
135 os_memcpy(data->peer_dev.mac_addr, cfg->peer_addr, ETH_ALEN);
136 if (cfg->p2p_dev_addr)
137 os_memcpy(data->p2p_dev_addr, cfg->p2p_dev_addr, ETH_ALEN);
138
139 data->use_psk_key = cfg->use_psk_key;
140 data->pbc_in_m1 = cfg->pbc_in_m1;
141
142 if (cfg->peer_pubkey_hash) {
143 os_memcpy(data->peer_pubkey_hash, cfg->peer_pubkey_hash,
144 WPS_OOB_PUBKEY_HASH_LEN);
145 data->peer_pubkey_hash_set = 1;
146 }
147
148 return data;
149 }
150
151
152 /**
153 * wps_deinit - Deinitialize WPS Registration protocol data
154 * @data: WPS Registration protocol data from wps_init()
155 */
wps_deinit(struct wps_data * data)156 void wps_deinit(struct wps_data *data)
157 {
158 #ifdef CONFIG_WPS_NFC
159 if (data->registrar && data->nfc_pw_token)
160 wps_registrar_remove_nfc_pw_token(data->wps->registrar,
161 data->nfc_pw_token);
162 #endif /* CONFIG_WPS_NFC */
163
164 if (data->wps_pin_revealed) {
165 wpa_printf(MSG_DEBUG, "WPS: Full PIN information revealed and "
166 "negotiation failed");
167 if (data->registrar)
168 wps_registrar_invalidate_pin(data->wps->registrar,
169 data->uuid_e);
170 } else if (data->registrar)
171 wps_registrar_unlock_pin(data->wps->registrar, data->uuid_e);
172
173 wpabuf_free(data->dh_privkey);
174 wpabuf_free(data->dh_pubkey_e);
175 wpabuf_free(data->dh_pubkey_r);
176 wpabuf_free(data->last_msg);
177 bin_clear_free(data->dev_password, data->dev_password_len);
178 bin_clear_free(data->alt_dev_password, data->alt_dev_password_len);
179 bin_clear_free(data->new_psk, data->new_psk_len);
180 wps_device_data_free(&data->peer_dev);
181 bin_clear_free(data->new_ap_settings, sizeof(*data->new_ap_settings));
182 dh5_free(data->dh_ctx);
183 os_free(data);
184 }
185
186
187 /**
188 * wps_process_msg - Process a WPS message
189 * @wps: WPS Registration protocol data from wps_init()
190 * @op_code: Message OP Code
191 * @msg: Message data
192 * Returns: Processing result
193 *
194 * This function is used to process WPS messages with OP Codes WSC_ACK,
195 * WSC_NACK, WSC_MSG, and WSC_Done. The caller (e.g., EAP server/peer) is
196 * responsible for reassembling the messages before calling this function.
197 * Response to this message is built by calling wps_get_msg().
198 */
wps_process_msg(struct wps_data * wps,enum wsc_op_code op_code,const struct wpabuf * msg)199 enum wps_process_res wps_process_msg(struct wps_data *wps,
200 enum wsc_op_code op_code,
201 const struct wpabuf *msg)
202 {
203 if (wps->registrar)
204 return wps_registrar_process_msg(wps, op_code, msg);
205 else
206 return wps_enrollee_process_msg(wps, op_code, msg);
207 }
208
209
210 /**
211 * wps_get_msg - Build a WPS message
212 * @wps: WPS Registration protocol data from wps_init()
213 * @op_code: Buffer for returning message OP Code
214 * Returns: The generated WPS message or %NULL on failure
215 *
216 * This function is used to build a response to a message processed by calling
217 * wps_process_msg(). The caller is responsible for freeing the buffer.
218 */
wps_get_msg(struct wps_data * wps,enum wsc_op_code * op_code)219 struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code)
220 {
221 if (wps->registrar)
222 return wps_registrar_get_msg(wps, op_code);
223 else
224 return wps_enrollee_get_msg(wps, op_code);
225 }
226
227
228 /**
229 * wps_is_selected_pbc_registrar - Check whether WPS IE indicates active PBC
230 * @msg: WPS IE contents from Beacon or Probe Response frame
231 * Returns: 1 if PBC Registrar is active, 0 if not
232 */
wps_is_selected_pbc_registrar(const struct wpabuf * msg)233 int wps_is_selected_pbc_registrar(const struct wpabuf *msg)
234 {
235 struct wps_parse_attr attr;
236
237 /*
238 * In theory, this could also verify that attr.sel_reg_config_methods
239 * includes WPS_CONFIG_PUSHBUTTON, but some deployed AP implementations
240 * do not set Selected Registrar Config Methods attribute properly, so
241 * it is safer to just use Device Password ID here.
242 */
243
244 if (wps_parse_msg(msg, &attr) < 0 ||
245 !attr.selected_registrar || *attr.selected_registrar == 0 ||
246 !attr.dev_password_id ||
247 WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
248 return 0;
249
250 #ifdef CONFIG_WPS_STRICT
251 if (!attr.sel_reg_config_methods ||
252 !(WPA_GET_BE16(attr.sel_reg_config_methods) &
253 WPS_CONFIG_PUSHBUTTON))
254 return 0;
255 #endif /* CONFIG_WPS_STRICT */
256
257 return 1;
258 }
259
260
is_selected_pin_registrar(struct wps_parse_attr * attr)261 static int is_selected_pin_registrar(struct wps_parse_attr *attr)
262 {
263 /*
264 * In theory, this could also verify that attr.sel_reg_config_methods
265 * includes WPS_CONFIG_LABEL, WPS_CONFIG_DISPLAY, or WPS_CONFIG_KEYPAD,
266 * but some deployed AP implementations do not set Selected Registrar
267 * Config Methods attribute properly, so it is safer to just use
268 * Device Password ID here.
269 */
270
271 if (!attr->selected_registrar || *attr->selected_registrar == 0)
272 return 0;
273
274 if (attr->dev_password_id != NULL &&
275 WPA_GET_BE16(attr->dev_password_id) == DEV_PW_PUSHBUTTON)
276 return 0;
277
278 #ifdef CONFIG_WPS_STRICT
279 if (!attr->sel_reg_config_methods ||
280 !(WPA_GET_BE16(attr->sel_reg_config_methods) &
281 (WPS_CONFIG_LABEL | WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD)))
282 return 0;
283 #endif /* CONFIG_WPS_STRICT */
284
285 return 1;
286 }
287
288
289 /**
290 * wps_is_selected_pin_registrar - Check whether WPS IE indicates active PIN
291 * @msg: WPS IE contents from Beacon or Probe Response frame
292 * Returns: 1 if PIN Registrar is active, 0 if not
293 */
wps_is_selected_pin_registrar(const struct wpabuf * msg)294 int wps_is_selected_pin_registrar(const struct wpabuf *msg)
295 {
296 struct wps_parse_attr attr;
297
298 if (wps_parse_msg(msg, &attr) < 0)
299 return 0;
300
301 return is_selected_pin_registrar(&attr);
302 }
303
304
305 /**
306 * wps_is_addr_authorized - Check whether WPS IE authorizes MAC address
307 * @msg: WPS IE contents from Beacon or Probe Response frame
308 * @addr: MAC address to search for
309 * @ver1_compat: Whether to use version 1 compatibility mode
310 * Returns: 2 if the specified address is explicit authorized, 1 if address is
311 * authorized (broadcast), 0 if not
312 */
wps_is_addr_authorized(const struct wpabuf * msg,const u8 * addr,int ver1_compat)313 int wps_is_addr_authorized(const struct wpabuf *msg, const u8 *addr,
314 int ver1_compat)
315 {
316 struct wps_parse_attr attr;
317 unsigned int i;
318 const u8 *pos;
319 const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
320
321 if (wps_parse_msg(msg, &attr) < 0)
322 return 0;
323
324 if (!attr.version2 && ver1_compat) {
325 /*
326 * Version 1.0 AP - AuthorizedMACs not used, so revert back to
327 * old mechanism of using SelectedRegistrar.
328 */
329 return is_selected_pin_registrar(&attr);
330 }
331
332 if (!attr.authorized_macs)
333 return 0;
334
335 pos = attr.authorized_macs;
336 for (i = 0; i < attr.authorized_macs_len / ETH_ALEN; i++) {
337 if (os_memcmp(pos, addr, ETH_ALEN) == 0)
338 return 2;
339 if (os_memcmp(pos, bcast, ETH_ALEN) == 0)
340 return 1;
341 pos += ETH_ALEN;
342 }
343
344 return 0;
345 }
346
347
348 /**
349 * wps_ap_priority_compar - Prioritize WPS IE from two APs
350 * @wps_a: WPS IE contents from Beacon or Probe Response frame
351 * @wps_b: WPS IE contents from Beacon or Probe Response frame
352 * Returns: 1 if wps_b is considered more likely selection for WPS
353 * provisioning, -1 if wps_a is considered more like, or 0 if no preference
354 */
wps_ap_priority_compar(const struct wpabuf * wps_a,const struct wpabuf * wps_b)355 int wps_ap_priority_compar(const struct wpabuf *wps_a,
356 const struct wpabuf *wps_b)
357 {
358 struct wps_parse_attr attr_a, attr_b;
359 int sel_a, sel_b;
360
361 if (wps_a == NULL || wps_parse_msg(wps_a, &attr_a) < 0)
362 return 1;
363 if (wps_b == NULL || wps_parse_msg(wps_b, &attr_b) < 0)
364 return -1;
365
366 sel_a = attr_a.selected_registrar && *attr_a.selected_registrar != 0;
367 sel_b = attr_b.selected_registrar && *attr_b.selected_registrar != 0;
368
369 if (sel_a && !sel_b)
370 return -1;
371 if (!sel_a && sel_b)
372 return 1;
373
374 return 0;
375 }
376
377
378 /**
379 * wps_get_uuid_e - Get UUID-E from WPS IE
380 * @msg: WPS IE contents from Beacon or Probe Response frame
381 * Returns: Pointer to UUID-E or %NULL if not included
382 *
383 * The returned pointer is to the msg contents and it remains valid only as
384 * long as the msg buffer is valid.
385 */
wps_get_uuid_e(const struct wpabuf * msg)386 const u8 * wps_get_uuid_e(const struct wpabuf *msg)
387 {
388 struct wps_parse_attr attr;
389
390 if (wps_parse_msg(msg, &attr) < 0)
391 return NULL;
392 return attr.uuid_e;
393 }
394
395
396 /**
397 * wps_is_20 - Check whether WPS attributes claim support for WPS 2.0
398 */
wps_is_20(const struct wpabuf * msg)399 int wps_is_20(const struct wpabuf *msg)
400 {
401 struct wps_parse_attr attr;
402
403 if (msg == NULL || wps_parse_msg(msg, &attr) < 0)
404 return 0;
405 return attr.version2 != NULL;
406 }
407
408
409 /**
410 * wps_build_assoc_req_ie - Build WPS IE for (Re)Association Request
411 * @req_type: Value for Request Type attribute
412 * Returns: WPS IE or %NULL on failure
413 *
414 * The caller is responsible for freeing the buffer.
415 */
wps_build_assoc_req_ie(enum wps_request_type req_type)416 struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type)
417 {
418 struct wpabuf *ie;
419 u8 *len;
420
421 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
422 "Request");
423 ie = wpabuf_alloc(100);
424 if (ie == NULL)
425 return NULL;
426
427 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
428 len = wpabuf_put(ie, 1);
429 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
430
431 if (wps_build_version(ie) ||
432 wps_build_req_type(ie, req_type) ||
433 wps_build_wfa_ext(ie, 0, NULL, 0)) {
434 wpabuf_free(ie);
435 return NULL;
436 }
437
438 *len = wpabuf_len(ie) - 2;
439
440 return ie;
441 }
442
443
444 /**
445 * wps_build_assoc_resp_ie - Build WPS IE for (Re)Association Response
446 * Returns: WPS IE or %NULL on failure
447 *
448 * The caller is responsible for freeing the buffer.
449 */
wps_build_assoc_resp_ie(void)450 struct wpabuf * wps_build_assoc_resp_ie(void)
451 {
452 struct wpabuf *ie;
453 u8 *len;
454
455 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
456 "Response");
457 ie = wpabuf_alloc(100);
458 if (ie == NULL)
459 return NULL;
460
461 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
462 len = wpabuf_put(ie, 1);
463 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
464
465 if (wps_build_version(ie) ||
466 wps_build_resp_type(ie, WPS_RESP_AP) ||
467 wps_build_wfa_ext(ie, 0, NULL, 0)) {
468 wpabuf_free(ie);
469 return NULL;
470 }
471
472 *len = wpabuf_len(ie) - 2;
473
474 return ie;
475 }
476
477
478 /**
479 * wps_build_probe_req_ie - Build WPS IE for Probe Request
480 * @pw_id: Password ID (DEV_PW_PUSHBUTTON for active PBC and DEV_PW_DEFAULT for
481 * most other use cases)
482 * @dev: Device attributes
483 * @uuid: Own UUID
484 * @req_type: Value for Request Type attribute
485 * @num_req_dev_types: Number of requested device types
486 * @req_dev_types: Requested device types (8 * num_req_dev_types octets) or
487 * %NULL if none
488 * Returns: WPS IE or %NULL on failure
489 *
490 * The caller is responsible for freeing the buffer.
491 */
wps_build_probe_req_ie(u16 pw_id,struct wps_device_data * dev,const u8 * uuid,enum wps_request_type req_type,unsigned int num_req_dev_types,const u8 * req_dev_types)492 struct wpabuf * wps_build_probe_req_ie(u16 pw_id, struct wps_device_data *dev,
493 const u8 *uuid,
494 enum wps_request_type req_type,
495 unsigned int num_req_dev_types,
496 const u8 *req_dev_types)
497 {
498 struct wpabuf *ie;
499
500 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for Probe Request");
501
502 ie = wpabuf_alloc(500);
503 if (ie == NULL)
504 return NULL;
505
506 if (wps_build_version(ie) ||
507 wps_build_req_type(ie, req_type) ||
508 wps_build_config_methods(ie, dev->config_methods) ||
509 wps_build_uuid_e(ie, uuid) ||
510 wps_build_primary_dev_type(dev, ie) ||
511 wps_build_rf_bands(dev, ie, 0) ||
512 wps_build_assoc_state(NULL, ie) ||
513 wps_build_config_error(ie, WPS_CFG_NO_ERROR) ||
514 wps_build_dev_password_id(ie, pw_id) ||
515 wps_build_manufacturer(dev, ie) ||
516 wps_build_model_name(dev, ie) ||
517 wps_build_model_number(dev, ie) ||
518 wps_build_dev_name(dev, ie) ||
519 wps_build_wfa_ext(ie, req_type == WPS_REQ_ENROLLEE, NULL, 0) ||
520 wps_build_req_dev_type(dev, ie, num_req_dev_types, req_dev_types)
521 ||
522 wps_build_secondary_dev_type(dev, ie)
523 ) {
524 wpabuf_free(ie);
525 return NULL;
526 }
527
528 return wps_ie_encapsulate(ie);
529 }
530
531
wps_free_pending_msgs(struct upnp_pending_message * msgs)532 void wps_free_pending_msgs(struct upnp_pending_message *msgs)
533 {
534 struct upnp_pending_message *p, *prev;
535 p = msgs;
536 while (p) {
537 prev = p;
538 p = p->next;
539 wpabuf_free(prev->msg);
540 os_free(prev);
541 }
542 }
543
544
wps_attr_text(struct wpabuf * data,char * buf,char * end)545 int wps_attr_text(struct wpabuf *data, char *buf, char *end)
546 {
547 struct wps_parse_attr attr;
548 char *pos = buf;
549 int ret;
550
551 if (wps_parse_msg(data, &attr) < 0)
552 return -1;
553
554 if (attr.wps_state) {
555 if (*attr.wps_state == WPS_STATE_NOT_CONFIGURED)
556 ret = os_snprintf(pos, end - pos,
557 "wps_state=unconfigured\n");
558 else if (*attr.wps_state == WPS_STATE_CONFIGURED)
559 ret = os_snprintf(pos, end - pos,
560 "wps_state=configured\n");
561 else
562 ret = 0;
563 if (os_snprintf_error(end - pos, ret))
564 return pos - buf;
565 pos += ret;
566 }
567
568 if (attr.ap_setup_locked && *attr.ap_setup_locked) {
569 ret = os_snprintf(pos, end - pos,
570 "wps_ap_setup_locked=1\n");
571 if (os_snprintf_error(end - pos, ret))
572 return pos - buf;
573 pos += ret;
574 }
575
576 if (attr.selected_registrar && *attr.selected_registrar) {
577 ret = os_snprintf(pos, end - pos,
578 "wps_selected_registrar=1\n");
579 if (os_snprintf_error(end - pos, ret))
580 return pos - buf;
581 pos += ret;
582 }
583
584 if (attr.dev_password_id) {
585 ret = os_snprintf(pos, end - pos,
586 "wps_device_password_id=%u\n",
587 WPA_GET_BE16(attr.dev_password_id));
588 if (os_snprintf_error(end - pos, ret))
589 return pos - buf;
590 pos += ret;
591 }
592
593 if (attr.sel_reg_config_methods) {
594 ret = os_snprintf(pos, end - pos,
595 "wps_selected_registrar_config_methods="
596 "0x%04x\n",
597 WPA_GET_BE16(attr.sel_reg_config_methods));
598 if (os_snprintf_error(end - pos, ret))
599 return pos - buf;
600 pos += ret;
601 }
602
603 if (attr.primary_dev_type) {
604 char devtype[WPS_DEV_TYPE_BUFSIZE];
605 ret = os_snprintf(pos, end - pos,
606 "wps_primary_device_type=%s\n",
607 wps_dev_type_bin2str(attr.primary_dev_type,
608 devtype,
609 sizeof(devtype)));
610 if (os_snprintf_error(end - pos, ret))
611 return pos - buf;
612 pos += ret;
613 }
614
615 if (attr.dev_name) {
616 char *str = os_malloc(attr.dev_name_len + 1);
617 size_t i;
618 if (str == NULL)
619 return pos - buf;
620 for (i = 0; i < attr.dev_name_len; i++) {
621 if (attr.dev_name[i] == 0 ||
622 is_ctrl_char(attr.dev_name[i]))
623 str[i] = '_';
624 else
625 str[i] = attr.dev_name[i];
626 }
627 str[i] = '\0';
628 ret = os_snprintf(pos, end - pos, "wps_device_name=%s\n", str);
629 os_free(str);
630 if (os_snprintf_error(end - pos, ret))
631 return pos - buf;
632 pos += ret;
633 }
634
635 if (attr.config_methods) {
636 ret = os_snprintf(pos, end - pos,
637 "wps_config_methods=0x%04x\n",
638 WPA_GET_BE16(attr.config_methods));
639 if (os_snprintf_error(end - pos, ret))
640 return pos - buf;
641 pos += ret;
642 }
643
644 return pos - buf;
645 }
646
647
wps_ei_str(enum wps_error_indication ei)648 const char * wps_ei_str(enum wps_error_indication ei)
649 {
650 switch (ei) {
651 case WPS_EI_NO_ERROR:
652 return "No Error";
653 case WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED:
654 return "TKIP Only Prohibited";
655 case WPS_EI_SECURITY_WEP_PROHIBITED:
656 return "WEP Prohibited";
657 case WPS_EI_AUTH_FAILURE:
658 return "Authentication Failure";
659 default:
660 return "Unknown";
661 }
662 }
663