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