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 * wps_init - Initialize WPS Registration protocol data
30 * @cfg: WPS configuration
31 * Returns: Pointer to allocated data or %NULL on failure
32 *
33 * This function is used to initialize WPS data for a registration protocol
34 * instance (i.e., each run of registration protocol as a Registrar of
35 * Enrollee. The caller is responsible for freeing this data after the
36 * registration run has been completed by calling wps_deinit().
37 */
wps_init(const struct wps_config * cfg)38 struct wps_data * wps_init(const struct wps_config *cfg)
39 {
40 struct wps_data *data = os_zalloc(sizeof(*data));
41 if (data == NULL)
42 return NULL;
43 data->wps = cfg->wps;
44 data->registrar = cfg->registrar;
45 if (cfg->registrar) {
46 os_memcpy(data->uuid_r, cfg->wps->uuid, WPS_UUID_LEN);
47 } else {
48 os_memcpy(data->mac_addr_e, cfg->wps->dev.mac_addr, ETH_ALEN);
49 os_memcpy(data->uuid_e, cfg->wps->uuid, WPS_UUID_LEN);
50 }
51 if (cfg->pin) {
52 data->dev_pw_id = cfg->dev_pw_id;
53 data->dev_password = os_memdup(cfg->pin, cfg->pin_len);
54 if (data->dev_password == NULL) {
55 os_free(data);
56 return NULL;
57 }
58 data->dev_password_len = cfg->pin_len;
59 wpa_hexdump_key(MSG_DEBUG, "WPS: AP PIN dev_password",
60 data->dev_password, data->dev_password_len);
61 }
62
63 #ifdef CONFIG_WPS_NFC
64 if (cfg->pin == NULL &&
65 cfg->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
66 data->dev_pw_id = cfg->dev_pw_id;
67
68 if (cfg->wps->ap && !cfg->registrar && cfg->wps->ap_nfc_dev_pw_id) {
69 /* Keep AP PIN as alternative Device Password */
70 data->alt_dev_pw_id = data->dev_pw_id;
71 data->alt_dev_password = data->dev_password;
72 data->alt_dev_password_len = data->dev_password_len;
73
74 data->dev_pw_id = cfg->wps->ap_nfc_dev_pw_id;
75 data->dev_password =
76 os_memdup(wpabuf_head(cfg->wps->ap_nfc_dev_pw),
77 wpabuf_len(cfg->wps->ap_nfc_dev_pw));
78 if (data->dev_password == NULL) {
79 os_free(data);
80 return NULL;
81 }
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_memdup(cfg->new_ap_settings,
124 sizeof(*data->new_ap_settings));
125 if (data->new_ap_settings == NULL) {
126 bin_clear_free(data->dev_password,
127 data->dev_password_len);
128 os_free(data);
129 return NULL;
130 }
131 }
132
133 if (cfg->peer_addr)
134 os_memcpy(data->peer_dev.mac_addr, cfg->peer_addr, ETH_ALEN);
135 if (cfg->p2p_dev_addr)
136 os_memcpy(data->p2p_dev_addr, cfg->p2p_dev_addr, ETH_ALEN);
137
138 data->use_psk_key = cfg->use_psk_key;
139 data->pbc_in_m1 = cfg->pbc_in_m1;
140
141 if (cfg->peer_pubkey_hash) {
142 os_memcpy(data->peer_pubkey_hash, cfg->peer_pubkey_hash,
143 WPS_OOB_PUBKEY_HASH_LEN);
144 data->peer_pubkey_hash_set = 1;
145 }
146
147 data->multi_ap_backhaul_sta = cfg->multi_ap_backhaul_sta;
148 data->multi_ap_profile = cfg->multi_ap_profile;
149
150 return data;
151 }
152
153
154 /**
155 * wps_deinit - Deinitialize WPS Registration protocol data
156 * @data: WPS Registration protocol data from wps_init()
157 */
wps_deinit(struct wps_data * data)158 void wps_deinit(struct wps_data *data)
159 {
160 #ifdef CONFIG_WPS_NFC
161 if (data->registrar && data->nfc_pw_token)
162 wps_registrar_remove_nfc_pw_token(data->wps->registrar,
163 data->nfc_pw_token);
164 #endif /* CONFIG_WPS_NFC */
165
166 if (data->wps_pin_revealed) {
167 wpa_printf(MSG_DEBUG, "WPS: Full PIN information revealed and "
168 "negotiation failed");
169 if (data->registrar)
170 wps_registrar_invalidate_pin(data->wps->registrar,
171 data->uuid_e);
172 } else if (data->registrar)
173 wps_registrar_unlock_pin(data->wps->registrar, data->uuid_e);
174
175 wpabuf_clear_free(data->dh_privkey);
176 wpabuf_free(data->dh_pubkey_e);
177 wpabuf_free(data->dh_pubkey_r);
178 wpabuf_free(data->last_msg);
179 bin_clear_free(data->dev_password, data->dev_password_len);
180 bin_clear_free(data->alt_dev_password, data->alt_dev_password_len);
181 bin_clear_free(data->new_psk, data->new_psk_len);
182 wps_device_data_free(&data->peer_dev);
183 bin_clear_free(data->new_ap_settings, sizeof(*data->new_ap_settings));
184 dh5_free(data->dh_ctx);
185 os_free(data);
186 }
187
188 #ifdef HARMONY_P2P_CONNECTIVITY_PATCH
wps_check_msg_done(struct wps_data * wps)189 int wps_check_msg_done(struct wps_data *wps)
190 {
191 wpa_printf(MSG_DEBUG, "WPS: State=%d\n", wps->state);
192 return (wps->state == WPS_FINISHED);
193 }
194 #endif
195
196 /**
197 * wps_process_msg - Process a WPS message
198 * @wps: WPS Registration protocol data from wps_init()
199 * @op_code: Message OP Code
200 * @msg: Message data
201 * Returns: Processing result
202 *
203 * This function is used to process WPS messages with OP Codes WSC_ACK,
204 * WSC_NACK, WSC_MSG, and WSC_Done. The caller (e.g., EAP server/peer) is
205 * responsible for reassembling the messages before calling this function.
206 * Response to this message is built by calling wps_get_msg().
207 */
wps_process_msg(struct wps_data * wps,enum wsc_op_code op_code,const struct wpabuf * msg)208 enum wps_process_res wps_process_msg(struct wps_data *wps,
209 enum wsc_op_code op_code,
210 const struct wpabuf *msg)
211 {
212 if (wps->registrar)
213 return wps_registrar_process_msg(wps, op_code, msg);
214 else
215 return wps_enrollee_process_msg(wps, op_code, msg);
216 }
217
218
219 /**
220 * wps_get_msg - Build a WPS message
221 * @wps: WPS Registration protocol data from wps_init()
222 * @op_code: Buffer for returning message OP Code
223 * Returns: The generated WPS message or %NULL on failure
224 *
225 * This function is used to build a response to a message processed by calling
226 * wps_process_msg(). The caller is responsible for freeing the buffer.
227 */
wps_get_msg(struct wps_data * wps,enum wsc_op_code * op_code)228 struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code)
229 {
230 if (wps->registrar)
231 return wps_registrar_get_msg(wps, op_code);
232 else
233 return wps_enrollee_get_msg(wps, op_code);
234 }
235
236
237 /**
238 * wps_is_selected_pbc_registrar - Check whether WPS IE indicates active PBC
239 * @msg: WPS IE contents from Beacon or Probe Response frame
240 * Returns: 1 if PBC Registrar is active, 0 if not
241 */
wps_is_selected_pbc_registrar(const struct wpabuf * msg)242 int wps_is_selected_pbc_registrar(const struct wpabuf *msg)
243 {
244 struct wps_parse_attr attr;
245
246 /*
247 * In theory, this could also verify that attr.sel_reg_config_methods
248 * includes WPS_CONFIG_PUSHBUTTON, but some deployed AP implementations
249 * do not set Selected Registrar Config Methods attribute properly, so
250 * it is safer to just use Device Password ID here.
251 */
252
253 if (wps_parse_msg(msg, &attr) < 0 ||
254 !attr.selected_registrar || *attr.selected_registrar == 0 ||
255 !attr.dev_password_id ||
256 WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
257 return 0;
258
259 #ifdef CONFIG_WPS_STRICT
260 if (!attr.sel_reg_config_methods ||
261 !(WPA_GET_BE16(attr.sel_reg_config_methods) &
262 WPS_CONFIG_PUSHBUTTON))
263 return 0;
264 #endif /* CONFIG_WPS_STRICT */
265
266 return 1;
267 }
268
269
is_selected_pin_registrar(struct wps_parse_attr * attr)270 static int is_selected_pin_registrar(struct wps_parse_attr *attr)
271 {
272 /*
273 * In theory, this could also verify that attr.sel_reg_config_methods
274 * includes WPS_CONFIG_LABEL, WPS_CONFIG_DISPLAY, or WPS_CONFIG_KEYPAD,
275 * but some deployed AP implementations do not set Selected Registrar
276 * Config Methods attribute properly, so it is safer to just use
277 * Device Password ID here.
278 */
279
280 if (!attr->selected_registrar || *attr->selected_registrar == 0)
281 return 0;
282
283 if (attr->dev_password_id != NULL &&
284 WPA_GET_BE16(attr->dev_password_id) == DEV_PW_PUSHBUTTON)
285 return 0;
286
287 #ifdef CONFIG_WPS_STRICT
288 if (!attr->sel_reg_config_methods ||
289 !(WPA_GET_BE16(attr->sel_reg_config_methods) &
290 (WPS_CONFIG_LABEL | WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD)))
291 return 0;
292 #endif /* CONFIG_WPS_STRICT */
293
294 return 1;
295 }
296
297
298 /**
299 * wps_is_selected_pin_registrar - Check whether WPS IE indicates active PIN
300 * @msg: WPS IE contents from Beacon or Probe Response frame
301 * Returns: 1 if PIN Registrar is active, 0 if not
302 */
wps_is_selected_pin_registrar(const struct wpabuf * msg)303 int wps_is_selected_pin_registrar(const struct wpabuf *msg)
304 {
305 struct wps_parse_attr attr;
306
307 if (wps_parse_msg(msg, &attr) < 0)
308 return 0;
309
310 return is_selected_pin_registrar(&attr);
311 }
312
313
314 /**
315 * wps_is_addr_authorized - Check whether WPS IE authorizes MAC address
316 * @msg: WPS IE contents from Beacon or Probe Response frame
317 * @addr: MAC address to search for
318 * @ver1_compat: Whether to use version 1 compatibility mode
319 * Returns: 2 if the specified address is explicit authorized, 1 if address is
320 * authorized (broadcast), 0 if not
321 */
wps_is_addr_authorized(const struct wpabuf * msg,const u8 * addr,int ver1_compat)322 int wps_is_addr_authorized(const struct wpabuf *msg, const u8 *addr,
323 int ver1_compat)
324 {
325 struct wps_parse_attr attr;
326 unsigned int i;
327 const u8 *pos;
328 const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
329
330 if (wps_parse_msg(msg, &attr) < 0)
331 return 0;
332
333 if (!attr.version2 && ver1_compat) {
334 /*
335 * Version 1.0 AP - AuthorizedMACs not used, so revert back to
336 * old mechanism of using SelectedRegistrar.
337 */
338 return is_selected_pin_registrar(&attr);
339 }
340
341 if (!attr.authorized_macs)
342 return 0;
343
344 pos = attr.authorized_macs;
345 for (i = 0; i < attr.authorized_macs_len / ETH_ALEN; i++) {
346 if (ether_addr_equal(pos, addr))
347 return 2;
348 if (ether_addr_equal(pos, bcast))
349 return 1;
350 pos += ETH_ALEN;
351 }
352
353 return 0;
354 }
355
356
357 /**
358 * wps_ap_priority_compar - Prioritize WPS IE from two APs
359 * @wps_a: WPS IE contents from Beacon or Probe Response frame
360 * @wps_b: WPS IE contents from Beacon or Probe Response frame
361 * Returns: 1 if wps_b is considered more likely selection for WPS
362 * provisioning, -1 if wps_a is considered more like, or 0 if no preference
363 */
wps_ap_priority_compar(const struct wpabuf * wps_a,const struct wpabuf * wps_b)364 int wps_ap_priority_compar(const struct wpabuf *wps_a,
365 const struct wpabuf *wps_b)
366 {
367 struct wps_parse_attr attr;
368 int sel_a, sel_b;
369
370 if (wps_a == NULL || wps_parse_msg(wps_a, &attr) < 0)
371 return 1;
372 sel_a = attr.selected_registrar && *attr.selected_registrar != 0;
373
374 if (wps_b == NULL || wps_parse_msg(wps_b, &attr) < 0)
375 return -1;
376 sel_b = attr.selected_registrar && *attr.selected_registrar != 0;
377
378 if (sel_a && !sel_b)
379 return -1;
380 if (!sel_a && sel_b)
381 return 1;
382
383 return 0;
384 }
385
386
387 /**
388 * wps_get_uuid_e - Get UUID-E from WPS IE
389 * @msg: WPS IE contents from Beacon or Probe Response frame
390 * Returns: Pointer to UUID-E or %NULL if not included
391 *
392 * The returned pointer is to the msg contents and it remains valid only as
393 * long as the msg buffer is valid.
394 */
wps_get_uuid_e(const struct wpabuf * msg)395 const u8 * wps_get_uuid_e(const struct wpabuf *msg)
396 {
397 struct wps_parse_attr attr;
398
399 if (wps_parse_msg(msg, &attr) < 0)
400 return NULL;
401 return attr.uuid_e;
402 }
403
404
405 /**
406 * wps_is_20 - Check whether WPS attributes claim support for WPS 2.0
407 */
wps_is_20(const struct wpabuf * msg)408 int wps_is_20(const struct wpabuf *msg)
409 {
410 struct wps_parse_attr attr;
411
412 if (msg == NULL || wps_parse_msg(msg, &attr) < 0)
413 return 0;
414 return attr.version2 != NULL;
415 }
416
417
418 /**
419 * wps_build_assoc_req_ie - Build WPS IE for (Re)Association Request
420 * @req_type: Value for Request Type attribute
421 * Returns: WPS IE or %NULL on failure
422 *
423 * The caller is responsible for freeing the buffer.
424 */
wps_build_assoc_req_ie(enum wps_request_type req_type)425 struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type)
426 {
427 struct wpabuf *ie;
428 u8 *len;
429
430 wpa_printf(MSG_EXCESSIVE, "WPS: Building WPS IE for (Re)Association "
431 "Request");
432 ie = wpabuf_alloc(100);
433 if (ie == NULL)
434 return NULL;
435
436 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
437 len = wpabuf_put(ie, 1);
438 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
439
440 if (wps_build_version(ie) ||
441 wps_build_req_type(ie, req_type) ||
442 wps_build_wfa_ext(ie, 0, NULL, 0, 0)) {
443 wpabuf_free(ie);
444 return NULL;
445 }
446
447 *len = wpabuf_len(ie) - 2;
448
449 return ie;
450 }
451
452
453 /**
454 * wps_build_assoc_resp_ie - Build WPS IE for (Re)Association Response
455 * Returns: WPS IE or %NULL on failure
456 *
457 * The caller is responsible for freeing the buffer.
458 */
wps_build_assoc_resp_ie(void)459 struct wpabuf * wps_build_assoc_resp_ie(void)
460 {
461 struct wpabuf *ie;
462 u8 *len;
463
464 wpa_printf(MSG_EXCESSIVE, "WPS: Building WPS IE for (Re)Association "
465 "Response");
466 ie = wpabuf_alloc(100);
467 if (ie == NULL)
468 return NULL;
469
470 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
471 len = wpabuf_put(ie, 1);
472 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
473
474 if (wps_build_version(ie) ||
475 wps_build_resp_type(ie, WPS_RESP_AP) ||
476 wps_build_wfa_ext(ie, 0, NULL, 0, 0)) {
477 wpabuf_free(ie);
478 return NULL;
479 }
480
481 *len = wpabuf_len(ie) - 2;
482
483 return ie;
484 }
485
486
487 /**
488 * wps_build_probe_req_ie - Build WPS IE for Probe Request
489 * @pw_id: Password ID (DEV_PW_PUSHBUTTON for active PBC and DEV_PW_DEFAULT for
490 * most other use cases)
491 * @dev: Device attributes
492 * @uuid: Own UUID
493 * @req_type: Value for Request Type attribute
494 * @num_req_dev_types: Number of requested device types
495 * @req_dev_types: Requested device types (8 * num_req_dev_types octets) or
496 * %NULL if none
497 * Returns: WPS IE or %NULL on failure
498 *
499 * The caller is responsible for freeing the buffer.
500 */
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)501 struct wpabuf * wps_build_probe_req_ie(u16 pw_id, struct wps_device_data *dev,
502 const u8 *uuid,
503 enum wps_request_type req_type,
504 unsigned int num_req_dev_types,
505 const u8 *req_dev_types)
506 {
507 struct wpabuf *ie;
508
509 wpa_printf(MSG_EXCESSIVE, "WPS: Building WPS IE for Probe Request");
510
511 ie = wpabuf_alloc(500);
512 if (ie == NULL)
513 return NULL;
514
515 if (wps_build_version(ie) ||
516 wps_build_req_type(ie, req_type) ||
517 wps_build_config_methods(ie, dev->config_methods) ||
518 wps_build_uuid_e(ie, uuid) ||
519 wps_build_primary_dev_type(dev, ie) ||
520 wps_build_rf_bands(dev, ie, 0) ||
521 wps_build_assoc_state(NULL, ie) ||
522 wps_build_config_error(ie, WPS_CFG_NO_ERROR) ||
523 wps_build_dev_password_id(ie, pw_id) ||
524 wps_build_manufacturer(dev, ie) ||
525 wps_build_model_name(dev, ie) ||
526 wps_build_model_number(dev, ie) ||
527 wps_build_dev_name(dev, ie) ||
528 wps_build_wfa_ext(ie, req_type == WPS_REQ_ENROLLEE, NULL, 0, 0) ||
529 wps_build_req_dev_type(dev, ie, num_req_dev_types, req_dev_types)
530 ||
531 wps_build_secondary_dev_type(dev, ie)
532 ) {
533 wpabuf_free(ie);
534 return NULL;
535 }
536
537 return wps_ie_encapsulate(ie);
538 }
539
540
wps_free_pending_msgs(struct upnp_pending_message * msgs)541 void wps_free_pending_msgs(struct upnp_pending_message *msgs)
542 {
543 struct upnp_pending_message *p, *prev;
544 p = msgs;
545 while (p) {
546 prev = p;
547 p = p->next;
548 wpabuf_free(prev->msg);
549 os_free(prev);
550 }
551 }
552
553
wps_attr_text(struct wpabuf * data,char * buf,char * end)554 int wps_attr_text(struct wpabuf *data, char *buf, char *end)
555 {
556 struct wps_parse_attr attr;
557 char *pos = buf;
558 int ret;
559
560 if (wps_parse_msg(data, &attr) < 0)
561 return -1;
562
563 if (attr.wps_state) {
564 if (*attr.wps_state == WPS_STATE_NOT_CONFIGURED)
565 ret = os_snprintf(pos, end - pos,
566 "wps_state=unconfigured\n");
567 else if (*attr.wps_state == WPS_STATE_CONFIGURED)
568 ret = os_snprintf(pos, end - pos,
569 "wps_state=configured\n");
570 else
571 ret = 0;
572 if (os_snprintf_error(end - pos, ret))
573 return pos - buf;
574 pos += ret;
575 }
576
577 if (attr.ap_setup_locked && *attr.ap_setup_locked) {
578 ret = os_snprintf(pos, end - pos,
579 "wps_ap_setup_locked=1\n");
580 if (os_snprintf_error(end - pos, ret))
581 return pos - buf;
582 pos += ret;
583 }
584
585 if (attr.selected_registrar && *attr.selected_registrar) {
586 ret = os_snprintf(pos, end - pos,
587 "wps_selected_registrar=1\n");
588 if (os_snprintf_error(end - pos, ret))
589 return pos - buf;
590 pos += ret;
591 }
592
593 if (attr.dev_password_id) {
594 ret = os_snprintf(pos, end - pos,
595 "wps_device_password_id=%u\n",
596 WPA_GET_BE16(attr.dev_password_id));
597 if (os_snprintf_error(end - pos, ret))
598 return pos - buf;
599 pos += ret;
600 }
601
602 if (attr.sel_reg_config_methods) {
603 ret = os_snprintf(pos, end - pos,
604 "wps_selected_registrar_config_methods="
605 "0x%04x\n",
606 WPA_GET_BE16(attr.sel_reg_config_methods));
607 if (os_snprintf_error(end - pos, ret))
608 return pos - buf;
609 pos += ret;
610 }
611
612 if (attr.primary_dev_type) {
613 char devtype[WPS_DEV_TYPE_BUFSIZE];
614 ret = os_snprintf(pos, end - pos,
615 "wps_primary_device_type=%s\n",
616 wps_dev_type_bin2str(attr.primary_dev_type,
617 devtype,
618 sizeof(devtype)));
619 if (os_snprintf_error(end - pos, ret))
620 return pos - buf;
621 pos += ret;
622 }
623
624 if (attr.dev_name) {
625 char *str = os_malloc(attr.dev_name_len + 1);
626 size_t i;
627 if (str == NULL)
628 return pos - buf;
629 for (i = 0; i < attr.dev_name_len; i++) {
630 if (attr.dev_name[i] == 0 ||
631 is_ctrl_char(attr.dev_name[i]))
632 str[i] = '_';
633 else
634 str[i] = attr.dev_name[i];
635 }
636 str[i] = '\0';
637 ret = os_snprintf(pos, end - pos, "wps_device_name=%s\n", str);
638 os_free(str);
639 if (os_snprintf_error(end - pos, ret))
640 return pos - buf;
641 pos += ret;
642 }
643
644 if (attr.config_methods) {
645 ret = os_snprintf(pos, end - pos,
646 "wps_config_methods=0x%04x\n",
647 WPA_GET_BE16(attr.config_methods));
648 if (os_snprintf_error(end - pos, ret))
649 return pos - buf;
650 pos += ret;
651 }
652
653 return pos - buf;
654 }
655
656
wps_ei_str(enum wps_error_indication ei)657 const char * wps_ei_str(enum wps_error_indication ei)
658 {
659 switch (ei) {
660 case WPS_EI_NO_ERROR:
661 return "No Error";
662 case WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED:
663 return "TKIP Only Prohibited";
664 case WPS_EI_SECURITY_WEP_PROHIBITED:
665 return "WEP Prohibited";
666 case WPS_EI_AUTH_FAILURE:
667 return "Authentication Failure";
668 default:
669 return "Unknown";
670 }
671 }
672