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_stub_cred = 0;
21 int wps_corrupt_pkhash = 0;
22 int wps_force_auth_types_in_use = 0;
23 u16 wps_force_auth_types = 0;
24 int wps_force_encr_types_in_use = 0;
25 u16 wps_force_encr_types = 0;
26 #endif /* CONFIG_WPS_TESTING */
27
28
29 /**
30 * wps_init - Initialize WPS Registration protocol data
31 * @cfg: WPS configuration
32 * Returns: Pointer to allocated data or %NULL on failure
33 *
34 * This function is used to initialize WPS data for a registration protocol
35 * instance (i.e., each run of registration protocol as a Registrar of
36 * Enrollee. The caller is responsible for freeing this data after the
37 * registration run has been completed by calling wps_deinit().
38 */
wps_init(const struct wps_config * cfg)39 struct wps_data * wps_init(const struct wps_config *cfg)
40 {
41 struct wps_data *data = os_zalloc(sizeof(*data));
42 if (data == NULL)
43 return NULL;
44 data->wps = cfg->wps;
45 data->registrar = cfg->registrar;
46 if (cfg->registrar) {
47 os_memcpy(data->uuid_r, cfg->wps->uuid, WPS_UUID_LEN);
48 } else {
49 os_memcpy(data->mac_addr_e, cfg->wps->dev.mac_addr, ETH_ALEN);
50 os_memcpy(data->uuid_e, cfg->wps->uuid, WPS_UUID_LEN);
51 }
52 if (cfg->pin) {
53 data->dev_pw_id = cfg->dev_pw_id;
54 data->dev_password = os_memdup(cfg->pin, cfg->pin_len);
55 if (data->dev_password == NULL) {
56 os_free(data);
57 return NULL;
58 }
59 data->dev_password_len = cfg->pin_len;
60 wpa_hexdump_key(MSG_DEBUG, "WPS: AP PIN dev_password",
61 data->dev_password, data->dev_password_len);
62 }
63
64 #ifdef CONFIG_WPS_NFC
65 if (cfg->pin == NULL &&
66 cfg->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
67 data->dev_pw_id = cfg->dev_pw_id;
68
69 if (cfg->wps->ap && !cfg->registrar && cfg->wps->ap_nfc_dev_pw_id) {
70 /* Keep AP PIN as alternative Device Password */
71 data->alt_dev_pw_id = data->dev_pw_id;
72 data->alt_dev_password = data->dev_password;
73 data->alt_dev_password_len = data->dev_password_len;
74
75 data->dev_pw_id = cfg->wps->ap_nfc_dev_pw_id;
76 data->dev_password =
77 os_memdup(wpabuf_head(cfg->wps->ap_nfc_dev_pw),
78 wpabuf_len(cfg->wps->ap_nfc_dev_pw));
79 if (data->dev_password == NULL) {
80 os_free(data);
81 return NULL;
82 }
83 data->dev_password_len = wpabuf_len(cfg->wps->ap_nfc_dev_pw);
84 wpa_hexdump_key(MSG_DEBUG, "WPS: NFC dev_password",
85 data->dev_password, data->dev_password_len);
86 }
87 #endif /* CONFIG_WPS_NFC */
88
89 data->pbc = cfg->pbc;
90 if (cfg->pbc) {
91 /* Use special PIN '00000000' for PBC */
92 data->dev_pw_id = DEV_PW_PUSHBUTTON;
93 bin_clear_free(data->dev_password, data->dev_password_len);
94 data->dev_password = (u8 *) os_strdup("00000000");
95 if (data->dev_password == NULL) {
96 os_free(data);
97 return NULL;
98 }
99 data->dev_password_len = 8;
100 }
101
102 data->state = data->registrar ? RECV_M1 : SEND_M1;
103
104 if (cfg->assoc_wps_ie) {
105 struct wps_parse_attr attr;
106 wpa_hexdump_buf(MSG_DEBUG, "WPS: WPS IE from (Re)AssocReq",
107 cfg->assoc_wps_ie);
108 if (wps_parse_msg(cfg->assoc_wps_ie, &attr) < 0) {
109 wpa_printf(MSG_DEBUG, "WPS: Failed to parse WPS IE "
110 "from (Re)AssocReq");
111 } else if (attr.request_type == NULL) {
112 wpa_printf(MSG_DEBUG, "WPS: No Request Type attribute "
113 "in (Re)AssocReq WPS IE");
114 } else {
115 wpa_printf(MSG_DEBUG, "WPS: Request Type (from WPS IE "
116 "in (Re)AssocReq WPS IE): %d",
117 *attr.request_type);
118 data->request_type = *attr.request_type;
119 }
120 }
121
122 if (cfg->new_ap_settings) {
123 data->new_ap_settings =
124 os_memdup(cfg->new_ap_settings,
125 sizeof(*data->new_ap_settings));
126 if (data->new_ap_settings == NULL) {
127 bin_clear_free(data->dev_password,
128 data->dev_password_len);
129 os_free(data);
130 return NULL;
131 }
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 data->multi_ap_backhaul_sta = cfg->multi_ap_backhaul_sta;
149 data->multi_ap_profile = cfg->multi_ap_profile;
150
151 return data;
152 }
153
154
155 /**
156 * wps_deinit - Deinitialize WPS Registration protocol data
157 * @data: WPS Registration protocol data from wps_init()
158 */
wps_deinit(struct wps_data * data)159 void wps_deinit(struct wps_data *data)
160 {
161 #ifdef CONFIG_WPS_NFC
162 if (data->registrar && data->nfc_pw_token)
163 wps_registrar_remove_nfc_pw_token(data->wps->registrar,
164 data->nfc_pw_token);
165 #endif /* CONFIG_WPS_NFC */
166
167 if (data->wps_pin_revealed) {
168 wpa_printf(MSG_DEBUG, "WPS: Full PIN information revealed and "
169 "negotiation failed");
170 if (data->registrar)
171 wps_registrar_invalidate_pin(data->wps->registrar,
172 data->uuid_e);
173 } else if (data->registrar)
174 wps_registrar_unlock_pin(data->wps->registrar, data->uuid_e);
175
176 wpabuf_clear_free(data->dh_privkey);
177 wpabuf_free(data->dh_pubkey_e);
178 wpabuf_free(data->dh_pubkey_r);
179 wpabuf_free(data->last_msg);
180 bin_clear_free(data->dev_password, data->dev_password_len);
181 bin_clear_free(data->alt_dev_password, data->alt_dev_password_len);
182 bin_clear_free(data->new_psk, data->new_psk_len);
183 wps_device_data_free(&data->peer_dev);
184 bin_clear_free(data->new_ap_settings, sizeof(*data->new_ap_settings));
185 dh5_free(data->dh_ctx);
186 os_free(data);
187 }
188
189
190 /**
191 * wps_process_msg - Process a WPS message
192 * @wps: WPS Registration protocol data from wps_init()
193 * @op_code: Message OP Code
194 * @msg: Message data
195 * Returns: Processing result
196 *
197 * This function is used to process WPS messages with OP Codes WSC_ACK,
198 * WSC_NACK, WSC_MSG, and WSC_Done. The caller (e.g., EAP server/peer) is
199 * responsible for reassembling the messages before calling this function.
200 * Response to this message is built by calling wps_get_msg().
201 */
wps_process_msg(struct wps_data * wps,enum wsc_op_code op_code,const struct wpabuf * msg)202 enum wps_process_res wps_process_msg(struct wps_data *wps,
203 enum wsc_op_code op_code,
204 const struct wpabuf *msg)
205 {
206 if (wps->registrar)
207 return wps_registrar_process_msg(wps, op_code, msg);
208 else
209 return wps_enrollee_process_msg(wps, op_code, msg);
210 }
211
212
213 /**
214 * wps_get_msg - Build a WPS message
215 * @wps: WPS Registration protocol data from wps_init()
216 * @op_code: Buffer for returning message OP Code
217 * Returns: The generated WPS message or %NULL on failure
218 *
219 * This function is used to build a response to a message processed by calling
220 * wps_process_msg(). The caller is responsible for freeing the buffer.
221 */
wps_get_msg(struct wps_data * wps,enum wsc_op_code * op_code)222 struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code)
223 {
224 if (wps->registrar)
225 return wps_registrar_get_msg(wps, op_code);
226 else
227 return wps_enrollee_get_msg(wps, op_code);
228 }
229
230
231 /**
232 * wps_is_selected_pbc_registrar - Check whether WPS IE indicates active PBC
233 * @msg: WPS IE contents from Beacon or Probe Response frame
234 * Returns: 1 if PBC Registrar is active, 0 if not
235 */
wps_is_selected_pbc_registrar(const struct wpabuf * msg)236 int wps_is_selected_pbc_registrar(const struct wpabuf *msg)
237 {
238 struct wps_parse_attr attr;
239
240 /*
241 * In theory, this could also verify that attr.sel_reg_config_methods
242 * includes WPS_CONFIG_PUSHBUTTON, but some deployed AP implementations
243 * do not set Selected Registrar Config Methods attribute properly, so
244 * it is safer to just use Device Password ID here.
245 */
246
247 if (wps_parse_msg(msg, &attr) < 0 ||
248 !attr.selected_registrar || *attr.selected_registrar == 0 ||
249 !attr.dev_password_id ||
250 WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
251 return 0;
252
253 #ifdef CONFIG_WPS_STRICT
254 if (!attr.sel_reg_config_methods ||
255 !(WPA_GET_BE16(attr.sel_reg_config_methods) &
256 WPS_CONFIG_PUSHBUTTON))
257 return 0;
258 #endif /* CONFIG_WPS_STRICT */
259
260 return 1;
261 }
262
263
is_selected_pin_registrar(struct wps_parse_attr * attr)264 static int is_selected_pin_registrar(struct wps_parse_attr *attr)
265 {
266 /*
267 * In theory, this could also verify that attr.sel_reg_config_methods
268 * includes WPS_CONFIG_LABEL, WPS_CONFIG_DISPLAY, or WPS_CONFIG_KEYPAD,
269 * but some deployed AP implementations do not set Selected Registrar
270 * Config Methods attribute properly, so it is safer to just use
271 * Device Password ID here.
272 */
273
274 if (!attr->selected_registrar || *attr->selected_registrar == 0)
275 return 0;
276
277 if (attr->dev_password_id != NULL &&
278 WPA_GET_BE16(attr->dev_password_id) == DEV_PW_PUSHBUTTON)
279 return 0;
280
281 #ifdef CONFIG_WPS_STRICT
282 if (!attr->sel_reg_config_methods ||
283 !(WPA_GET_BE16(attr->sel_reg_config_methods) &
284 (WPS_CONFIG_LABEL | WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD)))
285 return 0;
286 #endif /* CONFIG_WPS_STRICT */
287
288 return 1;
289 }
290
291
292 /**
293 * wps_is_selected_pin_registrar - Check whether WPS IE indicates active PIN
294 * @msg: WPS IE contents from Beacon or Probe Response frame
295 * Returns: 1 if PIN Registrar is active, 0 if not
296 */
wps_is_selected_pin_registrar(const struct wpabuf * msg)297 int wps_is_selected_pin_registrar(const struct wpabuf *msg)
298 {
299 struct wps_parse_attr attr;
300
301 if (wps_parse_msg(msg, &attr) < 0)
302 return 0;
303
304 return is_selected_pin_registrar(&attr);
305 }
306
307
308 /**
309 * wps_is_addr_authorized - Check whether WPS IE authorizes MAC address
310 * @msg: WPS IE contents from Beacon or Probe Response frame
311 * @addr: MAC address to search for
312 * @ver1_compat: Whether to use version 1 compatibility mode
313 * Returns: 2 if the specified address is explicit authorized, 1 if address is
314 * authorized (broadcast), 0 if not
315 */
wps_is_addr_authorized(const struct wpabuf * msg,const u8 * addr,int ver1_compat)316 int wps_is_addr_authorized(const struct wpabuf *msg, const u8 *addr,
317 int ver1_compat)
318 {
319 struct wps_parse_attr attr;
320 unsigned int i;
321 const u8 *pos;
322 const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
323
324 if (wps_parse_msg(msg, &attr) < 0)
325 return 0;
326
327 if (!attr.version2 && ver1_compat) {
328 /*
329 * Version 1.0 AP - AuthorizedMACs not used, so revert back to
330 * old mechanism of using SelectedRegistrar.
331 */
332 return is_selected_pin_registrar(&attr);
333 }
334
335 if (!attr.authorized_macs)
336 return 0;
337
338 pos = attr.authorized_macs;
339 for (i = 0; i < attr.authorized_macs_len / ETH_ALEN; i++) {
340 if (ether_addr_equal(pos, addr))
341 return 2;
342 if (ether_addr_equal(pos, bcast))
343 return 1;
344 pos += ETH_ALEN;
345 }
346
347 return 0;
348 }
349
350
351 /**
352 * wps_ap_priority_compar - Prioritize WPS IE from two APs
353 * @wps_a: WPS IE contents from Beacon or Probe Response frame
354 * @wps_b: WPS IE contents from Beacon or Probe Response frame
355 * Returns: 1 if wps_b is considered more likely selection for WPS
356 * provisioning, -1 if wps_a is considered more like, or 0 if no preference
357 */
wps_ap_priority_compar(const struct wpabuf * wps_a,const struct wpabuf * wps_b)358 int wps_ap_priority_compar(const struct wpabuf *wps_a,
359 const struct wpabuf *wps_b)
360 {
361 struct wps_parse_attr attr;
362 int sel_a, sel_b;
363
364 if (wps_a == NULL || wps_parse_msg(wps_a, &attr) < 0)
365 return 1;
366 sel_a = attr.selected_registrar && *attr.selected_registrar != 0;
367
368 if (wps_b == NULL || wps_parse_msg(wps_b, &attr) < 0)
369 return -1;
370 sel_b = attr.selected_registrar && *attr.selected_registrar != 0;
371
372 if (sel_a && !sel_b)
373 return -1;
374 if (!sel_a && sel_b)
375 return 1;
376
377 return 0;
378 }
379
380
381 /**
382 * wps_get_uuid_e - Get UUID-E from WPS IE
383 * @msg: WPS IE contents from Beacon or Probe Response frame
384 * Returns: Pointer to UUID-E or %NULL if not included
385 *
386 * The returned pointer is to the msg contents and it remains valid only as
387 * long as the msg buffer is valid.
388 */
wps_get_uuid_e(const struct wpabuf * msg)389 const u8 * wps_get_uuid_e(const struct wpabuf *msg)
390 {
391 struct wps_parse_attr attr;
392
393 if (wps_parse_msg(msg, &attr) < 0)
394 return NULL;
395 return attr.uuid_e;
396 }
397
398
399 /**
400 * wps_is_20 - Check whether WPS attributes claim support for WPS 2.0
401 */
wps_is_20(const struct wpabuf * msg)402 int wps_is_20(const struct wpabuf *msg)
403 {
404 struct wps_parse_attr attr;
405
406 if (msg == NULL || wps_parse_msg(msg, &attr) < 0)
407 return 0;
408 return attr.version2 != NULL;
409 }
410
411
412 /**
413 * wps_build_assoc_req_ie - Build WPS IE for (Re)Association Request
414 * @req_type: Value for Request Type attribute
415 * Returns: WPS IE or %NULL on failure
416 *
417 * The caller is responsible for freeing the buffer.
418 */
wps_build_assoc_req_ie(enum wps_request_type req_type)419 struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type)
420 {
421 struct wpabuf *ie;
422 u8 *len;
423
424 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
425 "Request");
426 ie = wpabuf_alloc(100);
427 if (ie == NULL)
428 return NULL;
429
430 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
431 len = wpabuf_put(ie, 1);
432 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
433
434 if (wps_build_version(ie) ||
435 wps_build_req_type(ie, req_type) ||
436 wps_build_wfa_ext(ie, 0, NULL, 0, 0)) {
437 wpabuf_free(ie);
438 return NULL;
439 }
440
441 *len = wpabuf_len(ie) - 2;
442
443 return ie;
444 }
445
446
447 /**
448 * wps_build_assoc_resp_ie - Build WPS IE for (Re)Association Response
449 * Returns: WPS IE or %NULL on failure
450 *
451 * The caller is responsible for freeing the buffer.
452 */
wps_build_assoc_resp_ie(void)453 struct wpabuf * wps_build_assoc_resp_ie(void)
454 {
455 struct wpabuf *ie;
456 u8 *len;
457
458 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
459 "Response");
460 ie = wpabuf_alloc(100);
461 if (ie == NULL)
462 return NULL;
463
464 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
465 len = wpabuf_put(ie, 1);
466 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
467
468 if (wps_build_version(ie) ||
469 wps_build_resp_type(ie, WPS_RESP_AP) ||
470 wps_build_wfa_ext(ie, 0, NULL, 0, 0)) {
471 wpabuf_free(ie);
472 return NULL;
473 }
474
475 *len = wpabuf_len(ie) - 2;
476
477 return ie;
478 }
479
480
481 /**
482 * wps_build_probe_req_ie - Build WPS IE for Probe Request
483 * @pw_id: Password ID (DEV_PW_PUSHBUTTON for active PBC and DEV_PW_DEFAULT for
484 * most other use cases)
485 * @dev: Device attributes
486 * @uuid: Own UUID
487 * @req_type: Value for Request Type attribute
488 * @num_req_dev_types: Number of requested device types
489 * @req_dev_types: Requested device types (8 * num_req_dev_types octets) or
490 * %NULL if none
491 * Returns: WPS IE or %NULL on failure
492 *
493 * The caller is responsible for freeing the buffer.
494 */
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)495 struct wpabuf * wps_build_probe_req_ie(u16 pw_id, struct wps_device_data *dev,
496 const u8 *uuid,
497 enum wps_request_type req_type,
498 unsigned int num_req_dev_types,
499 const u8 *req_dev_types)
500 {
501 struct wpabuf *ie;
502
503 wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for Probe Request");
504
505 ie = wpabuf_alloc(500);
506 if (ie == NULL)
507 return NULL;
508
509 if (wps_build_version(ie) ||
510 wps_build_req_type(ie, req_type) ||
511 wps_build_config_methods(ie, dev->config_methods) ||
512 wps_build_uuid_e(ie, uuid) ||
513 wps_build_primary_dev_type(dev, ie) ||
514 wps_build_rf_bands(dev, ie, 0) ||
515 wps_build_assoc_state(NULL, ie) ||
516 wps_build_config_error(ie, WPS_CFG_NO_ERROR) ||
517 wps_build_dev_password_id(ie, pw_id) ||
518 wps_build_manufacturer(dev, ie) ||
519 wps_build_model_name(dev, ie) ||
520 wps_build_model_number(dev, ie) ||
521 wps_build_dev_name(dev, ie) ||
522 wps_build_wfa_ext(ie, req_type == WPS_REQ_ENROLLEE, NULL, 0, 0) ||
523 wps_build_req_dev_type(dev, ie, num_req_dev_types, req_dev_types)
524 ||
525 wps_build_secondary_dev_type(dev, ie)
526 ) {
527 wpabuf_free(ie);
528 return NULL;
529 }
530
531 return wps_ie_encapsulate(ie);
532 }
533
534
wps_free_pending_msgs(struct upnp_pending_message * msgs)535 void wps_free_pending_msgs(struct upnp_pending_message *msgs)
536 {
537 struct upnp_pending_message *p, *prev;
538 p = msgs;
539 while (p) {
540 prev = p;
541 p = p->next;
542 wpabuf_free(prev->msg);
543 os_free(prev);
544 }
545 }
546
547
wps_attr_text(struct wpabuf * data,char * buf,char * end)548 int wps_attr_text(struct wpabuf *data, char *buf, char *end)
549 {
550 struct wps_parse_attr attr;
551 char *pos = buf;
552 int ret;
553
554 if (wps_parse_msg(data, &attr) < 0)
555 return -1;
556
557 if (attr.wps_state) {
558 if (*attr.wps_state == WPS_STATE_NOT_CONFIGURED)
559 ret = os_snprintf(pos, end - pos,
560 "wps_state=unconfigured\n");
561 else if (*attr.wps_state == WPS_STATE_CONFIGURED)
562 ret = os_snprintf(pos, end - pos,
563 "wps_state=configured\n");
564 else
565 ret = 0;
566 if (os_snprintf_error(end - pos, ret))
567 return pos - buf;
568 pos += ret;
569 }
570
571 if (attr.ap_setup_locked && *attr.ap_setup_locked) {
572 ret = os_snprintf(pos, end - pos,
573 "wps_ap_setup_locked=1\n");
574 if (os_snprintf_error(end - pos, ret))
575 return pos - buf;
576 pos += ret;
577 }
578
579 if (attr.selected_registrar && *attr.selected_registrar) {
580 ret = os_snprintf(pos, end - pos,
581 "wps_selected_registrar=1\n");
582 if (os_snprintf_error(end - pos, ret))
583 return pos - buf;
584 pos += ret;
585 }
586
587 if (attr.dev_password_id) {
588 ret = os_snprintf(pos, end - pos,
589 "wps_device_password_id=%u\n",
590 WPA_GET_BE16(attr.dev_password_id));
591 if (os_snprintf_error(end - pos, ret))
592 return pos - buf;
593 pos += ret;
594 }
595
596 if (attr.sel_reg_config_methods) {
597 ret = os_snprintf(pos, end - pos,
598 "wps_selected_registrar_config_methods="
599 "0x%04x\n",
600 WPA_GET_BE16(attr.sel_reg_config_methods));
601 if (os_snprintf_error(end - pos, ret))
602 return pos - buf;
603 pos += ret;
604 }
605
606 if (attr.primary_dev_type) {
607 char devtype[WPS_DEV_TYPE_BUFSIZE];
608 ret = os_snprintf(pos, end - pos,
609 "wps_primary_device_type=%s\n",
610 wps_dev_type_bin2str(attr.primary_dev_type,
611 devtype,
612 sizeof(devtype)));
613 if (os_snprintf_error(end - pos, ret))
614 return pos - buf;
615 pos += ret;
616 }
617
618 if (attr.dev_name) {
619 char *str = os_malloc(attr.dev_name_len + 1);
620 size_t i;
621 if (str == NULL)
622 return pos - buf;
623 for (i = 0; i < attr.dev_name_len; i++) {
624 if (attr.dev_name[i] == 0 ||
625 is_ctrl_char(attr.dev_name[i]))
626 str[i] = '_';
627 else
628 str[i] = attr.dev_name[i];
629 }
630 str[i] = '\0';
631 ret = os_snprintf(pos, end - pos, "wps_device_name=%s\n", str);
632 os_free(str);
633 if (os_snprintf_error(end - pos, ret))
634 return pos - buf;
635 pos += ret;
636 }
637
638 if (attr.config_methods) {
639 ret = os_snprintf(pos, end - pos,
640 "wps_config_methods=0x%04x\n",
641 WPA_GET_BE16(attr.config_methods));
642 if (os_snprintf_error(end - pos, ret))
643 return pos - buf;
644 pos += ret;
645 }
646
647 return pos - buf;
648 }
649
650
wps_ei_str(enum wps_error_indication ei)651 const char * wps_ei_str(enum wps_error_indication ei)
652 {
653 switch (ei) {
654 case WPS_EI_NO_ERROR:
655 return "No Error";
656 case WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED:
657 return "TKIP Only Prohibited";
658 case WPS_EI_SECURITY_WEP_PROHIBITED:
659 return "WEP Prohibited";
660 case WPS_EI_AUTH_FAILURE:
661 return "Authentication Failure";
662 default:
663 return "Unknown";
664 }
665 }
666