Line data Source code
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 : */
35 98 : struct wps_data * wps_init(const struct wps_config *cfg)
36 : {
37 98 : struct wps_data *data = os_zalloc(sizeof(*data));
38 98 : if (data == NULL)
39 0 : return NULL;
40 98 : data->wps = cfg->wps;
41 98 : data->registrar = cfg->registrar;
42 98 : if (cfg->registrar) {
43 53 : os_memcpy(data->uuid_r, cfg->wps->uuid, WPS_UUID_LEN);
44 : } else {
45 45 : os_memcpy(data->mac_addr_e, cfg->wps->dev.mac_addr, ETH_ALEN);
46 45 : os_memcpy(data->uuid_e, cfg->wps->uuid, WPS_UUID_LEN);
47 : }
48 98 : if (cfg->pin) {
49 41 : data->dev_pw_id = cfg->dev_pw_id;
50 41 : data->dev_password = os_malloc(cfg->pin_len);
51 41 : if (data->dev_password == NULL) {
52 0 : os_free(data);
53 0 : return NULL;
54 : }
55 41 : os_memcpy(data->dev_password, cfg->pin, cfg->pin_len);
56 41 : data->dev_password_len = cfg->pin_len;
57 82 : wpa_hexdump_key(MSG_DEBUG, "WPS: AP PIN dev_password",
58 41 : data->dev_password, data->dev_password_len);
59 : }
60 :
61 : #ifdef CONFIG_WPS_NFC
62 155 : if (cfg->pin == NULL &&
63 57 : cfg->dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER)
64 0 : data->dev_pw_id = cfg->dev_pw_id;
65 :
66 98 : if (cfg->wps->ap && !cfg->registrar && cfg->wps->ap_nfc_dev_pw_id) {
67 : /* Keep AP PIN as alternative Device Password */
68 1 : data->alt_dev_pw_id = data->dev_pw_id;
69 1 : data->alt_dev_password = data->dev_password;
70 1 : data->alt_dev_password_len = data->dev_password_len;
71 :
72 1 : data->dev_pw_id = cfg->wps->ap_nfc_dev_pw_id;
73 1 : data->dev_password =
74 1 : os_malloc(wpabuf_len(cfg->wps->ap_nfc_dev_pw));
75 1 : if (data->dev_password == NULL) {
76 0 : os_free(data);
77 0 : return NULL;
78 : }
79 1 : os_memcpy(data->dev_password,
80 : wpabuf_head(cfg->wps->ap_nfc_dev_pw),
81 : wpabuf_len(cfg->wps->ap_nfc_dev_pw));
82 1 : data->dev_password_len = wpabuf_len(cfg->wps->ap_nfc_dev_pw);
83 2 : wpa_hexdump_key(MSG_DEBUG, "WPS: NFC dev_password",
84 1 : data->dev_password, data->dev_password_len);
85 : }
86 : #endif /* CONFIG_WPS_NFC */
87 :
88 98 : data->pbc = cfg->pbc;
89 98 : if (cfg->pbc) {
90 : /* Use special PIN '00000000' for PBC */
91 0 : data->dev_pw_id = DEV_PW_PUSHBUTTON;
92 0 : bin_clear_free(data->dev_password, data->dev_password_len);
93 0 : data->dev_password = (u8 *) os_strdup("00000000");
94 0 : if (data->dev_password == NULL) {
95 0 : os_free(data);
96 0 : return NULL;
97 : }
98 0 : data->dev_password_len = 8;
99 : }
100 :
101 98 : data->state = data->registrar ? RECV_M1 : SEND_M1;
102 :
103 98 : if (cfg->assoc_wps_ie) {
104 : struct wps_parse_attr attr;
105 86 : wpa_hexdump_buf(MSG_DEBUG, "WPS: WPS IE from (Re)AssocReq",
106 : cfg->assoc_wps_ie);
107 86 : if (wps_parse_msg(cfg->assoc_wps_ie, &attr) < 0) {
108 0 : wpa_printf(MSG_DEBUG, "WPS: Failed to parse WPS IE "
109 : "from (Re)AssocReq");
110 86 : } else if (attr.request_type == NULL) {
111 0 : wpa_printf(MSG_DEBUG, "WPS: No Request Type attribute "
112 : "in (Re)AssocReq WPS IE");
113 : } else {
114 86 : wpa_printf(MSG_DEBUG, "WPS: Request Type (from WPS IE "
115 : "in (Re)AssocReq WPS IE): %d",
116 86 : *attr.request_type);
117 86 : data->request_type = *attr.request_type;
118 : }
119 : }
120 :
121 98 : if (cfg->new_ap_settings) {
122 0 : data->new_ap_settings =
123 0 : os_malloc(sizeof(*data->new_ap_settings));
124 0 : if (data->new_ap_settings == NULL) {
125 0 : bin_clear_free(data->dev_password,
126 : data->dev_password_len);
127 0 : os_free(data);
128 0 : return NULL;
129 : }
130 0 : os_memcpy(data->new_ap_settings, cfg->new_ap_settings,
131 : sizeof(*data->new_ap_settings));
132 : }
133 :
134 98 : if (cfg->peer_addr)
135 86 : os_memcpy(data->peer_dev.mac_addr, cfg->peer_addr, ETH_ALEN);
136 98 : if (cfg->p2p_dev_addr)
137 0 : os_memcpy(data->p2p_dev_addr, cfg->p2p_dev_addr, ETH_ALEN);
138 :
139 98 : data->use_psk_key = cfg->use_psk_key;
140 98 : data->pbc_in_m1 = cfg->pbc_in_m1;
141 :
142 98 : if (cfg->peer_pubkey_hash) {
143 0 : os_memcpy(data->peer_pubkey_hash, cfg->peer_pubkey_hash,
144 : WPS_OOB_PUBKEY_HASH_LEN);
145 0 : data->peer_pubkey_hash_set = 1;
146 : }
147 :
148 98 : return data;
149 : }
150 :
151 :
152 : /**
153 : * wps_deinit - Deinitialize WPS Registration protocol data
154 : * @data: WPS Registration protocol data from wps_init()
155 : */
156 98 : void wps_deinit(struct wps_data *data)
157 : {
158 : #ifdef CONFIG_WPS_NFC
159 98 : if (data->registrar && data->nfc_pw_token)
160 9 : wps_registrar_remove_nfc_pw_token(data->wps->registrar,
161 : data->nfc_pw_token);
162 : #endif /* CONFIG_WPS_NFC */
163 :
164 98 : if (data->wps_pin_revealed) {
165 1 : wpa_printf(MSG_DEBUG, "WPS: Full PIN information revealed and "
166 : "negotiation failed");
167 1 : if (data->registrar)
168 1 : wps_registrar_invalidate_pin(data->wps->registrar,
169 1 : data->uuid_e);
170 97 : } else if (data->registrar)
171 52 : wps_registrar_unlock_pin(data->wps->registrar, data->uuid_e);
172 :
173 98 : wpabuf_free(data->dh_privkey);
174 98 : wpabuf_free(data->dh_pubkey_e);
175 98 : wpabuf_free(data->dh_pubkey_r);
176 98 : wpabuf_free(data->last_msg);
177 98 : bin_clear_free(data->dev_password, data->dev_password_len);
178 98 : bin_clear_free(data->alt_dev_password, data->alt_dev_password_len);
179 98 : bin_clear_free(data->new_psk, data->new_psk_len);
180 98 : wps_device_data_free(&data->peer_dev);
181 98 : bin_clear_free(data->new_ap_settings, sizeof(*data->new_ap_settings));
182 98 : dh5_free(data->dh_ctx);
183 98 : os_free(data);
184 98 : }
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 : */
199 377 : enum wps_process_res wps_process_msg(struct wps_data *wps,
200 : enum wsc_op_code op_code,
201 : const struct wpabuf *msg)
202 : {
203 377 : if (wps->registrar)
204 246 : return wps_registrar_process_msg(wps, op_code, msg);
205 : else
206 131 : 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 : */
219 314 : struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code)
220 : {
221 314 : if (wps->registrar)
222 172 : return wps_registrar_get_msg(wps, op_code);
223 : else
224 142 : 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 : */
233 0 : 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 0 : if (wps_parse_msg(msg, &attr) < 0 ||
245 0 : !attr.selected_registrar || *attr.selected_registrar == 0 ||
246 0 : !attr.dev_password_id ||
247 0 : WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
248 0 : 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 0 : return 1;
258 : }
259 :
260 :
261 0 : 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 0 : if (!attr->selected_registrar || *attr->selected_registrar == 0)
272 0 : return 0;
273 :
274 0 : if (attr->dev_password_id != NULL &&
275 0 : WPA_GET_BE16(attr->dev_password_id) == DEV_PW_PUSHBUTTON)
276 0 : 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 0 : 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 : */
294 0 : int wps_is_selected_pin_registrar(const struct wpabuf *msg)
295 : {
296 : struct wps_parse_attr attr;
297 :
298 0 : if (wps_parse_msg(msg, &attr) < 0)
299 0 : return 0;
300 :
301 0 : 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 : */
313 0 : 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 0 : const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
320 :
321 0 : if (wps_parse_msg(msg, &attr) < 0)
322 0 : return 0;
323 :
324 0 : 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 0 : return is_selected_pin_registrar(&attr);
330 : }
331 :
332 0 : if (!attr.authorized_macs)
333 0 : return 0;
334 :
335 0 : pos = attr.authorized_macs;
336 0 : for (i = 0; i < attr.authorized_macs_len / ETH_ALEN; i++) {
337 0 : if (os_memcmp(pos, addr, ETH_ALEN) == 0)
338 0 : return 2;
339 0 : if (os_memcmp(pos, bcast, ETH_ALEN) == 0)
340 0 : return 1;
341 0 : pos += ETH_ALEN;
342 : }
343 :
344 0 : 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 : */
355 0 : 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 0 : if (wps_a == NULL || wps_parse_msg(wps_a, &attr_a) < 0)
362 0 : return 1;
363 0 : if (wps_b == NULL || wps_parse_msg(wps_b, &attr_b) < 0)
364 0 : return -1;
365 :
366 0 : sel_a = attr_a.selected_registrar && *attr_a.selected_registrar != 0;
367 0 : sel_b = attr_b.selected_registrar && *attr_b.selected_registrar != 0;
368 :
369 0 : if (sel_a && !sel_b)
370 0 : return -1;
371 0 : if (!sel_a && sel_b)
372 0 : return 1;
373 :
374 0 : 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 : */
386 0 : const u8 * wps_get_uuid_e(const struct wpabuf *msg)
387 : {
388 : struct wps_parse_attr attr;
389 :
390 0 : if (wps_parse_msg(msg, &attr) < 0)
391 0 : return NULL;
392 0 : return attr.uuid_e;
393 : }
394 :
395 :
396 : /**
397 : * wps_is_20 - Check whether WPS attributes claim support for WPS 2.0
398 : */
399 86 : int wps_is_20(const struct wpabuf *msg)
400 : {
401 : struct wps_parse_attr attr;
402 :
403 86 : if (msg == NULL || wps_parse_msg(msg, &attr) < 0)
404 0 : return 0;
405 86 : 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 : */
416 0 : struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type)
417 : {
418 : struct wpabuf *ie;
419 : u8 *len;
420 :
421 0 : wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
422 : "Request");
423 0 : ie = wpabuf_alloc(100);
424 0 : if (ie == NULL)
425 0 : return NULL;
426 :
427 0 : wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
428 0 : len = wpabuf_put(ie, 1);
429 0 : wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
430 :
431 0 : if (wps_build_version(ie) ||
432 0 : wps_build_req_type(ie, req_type) ||
433 0 : wps_build_wfa_ext(ie, 0, NULL, 0)) {
434 0 : wpabuf_free(ie);
435 0 : return NULL;
436 : }
437 :
438 0 : *len = wpabuf_len(ie) - 2;
439 :
440 0 : 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 : */
450 341 : struct wpabuf * wps_build_assoc_resp_ie(void)
451 : {
452 : struct wpabuf *ie;
453 : u8 *len;
454 :
455 341 : wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for (Re)Association "
456 : "Response");
457 341 : ie = wpabuf_alloc(100);
458 341 : if (ie == NULL)
459 0 : return NULL;
460 :
461 341 : wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
462 341 : len = wpabuf_put(ie, 1);
463 341 : wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
464 :
465 682 : if (wps_build_version(ie) ||
466 682 : wps_build_resp_type(ie, WPS_RESP_AP) ||
467 341 : wps_build_wfa_ext(ie, 0, NULL, 0)) {
468 0 : wpabuf_free(ie);
469 0 : return NULL;
470 : }
471 :
472 341 : *len = wpabuf_len(ie) - 2;
473 :
474 341 : 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 : */
492 0 : 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 0 : wpa_printf(MSG_DEBUG, "WPS: Building WPS IE for Probe Request");
501 :
502 0 : ie = wpabuf_alloc(500);
503 0 : if (ie == NULL)
504 0 : return NULL;
505 :
506 0 : if (wps_build_version(ie) ||
507 0 : wps_build_req_type(ie, req_type) ||
508 0 : wps_build_config_methods(ie, dev->config_methods) ||
509 0 : wps_build_uuid_e(ie, uuid) ||
510 0 : wps_build_primary_dev_type(dev, ie) ||
511 0 : wps_build_rf_bands(dev, ie, 0) ||
512 0 : wps_build_assoc_state(NULL, ie) ||
513 0 : wps_build_config_error(ie, WPS_CFG_NO_ERROR) ||
514 0 : wps_build_dev_password_id(ie, pw_id) ||
515 0 : wps_build_manufacturer(dev, ie) ||
516 0 : wps_build_model_name(dev, ie) ||
517 0 : wps_build_model_number(dev, ie) ||
518 0 : wps_build_dev_name(dev, ie) ||
519 0 : wps_build_wfa_ext(ie, req_type == WPS_REQ_ENROLLEE, NULL, 0) ||
520 0 : wps_build_req_dev_type(dev, ie, num_req_dev_types, req_dev_types)
521 0 : ||
522 0 : wps_build_secondary_dev_type(dev, ie)
523 : ) {
524 0 : wpabuf_free(ie);
525 0 : return NULL;
526 : }
527 :
528 0 : return wps_ie_encapsulate(ie);
529 : }
530 :
531 :
532 78 : void wps_free_pending_msgs(struct upnp_pending_message *msgs)
533 : {
534 : struct upnp_pending_message *p, *prev;
535 78 : p = msgs;
536 156 : while (p) {
537 0 : prev = p;
538 0 : p = p->next;
539 0 : wpabuf_free(prev->msg);
540 0 : os_free(prev);
541 : }
542 78 : }
543 :
544 :
545 0 : int wps_attr_text(struct wpabuf *data, char *buf, char *end)
546 : {
547 : struct wps_parse_attr attr;
548 0 : char *pos = buf;
549 : int ret;
550 :
551 0 : if (wps_parse_msg(data, &attr) < 0)
552 0 : return -1;
553 :
554 0 : if (attr.wps_state) {
555 0 : if (*attr.wps_state == WPS_STATE_NOT_CONFIGURED)
556 0 : ret = os_snprintf(pos, end - pos,
557 : "wps_state=unconfigured\n");
558 0 : else if (*attr.wps_state == WPS_STATE_CONFIGURED)
559 0 : ret = os_snprintf(pos, end - pos,
560 : "wps_state=configured\n");
561 : else
562 0 : ret = 0;
563 0 : if (ret < 0 || ret >= end - pos)
564 0 : return pos - buf;
565 0 : pos += ret;
566 : }
567 :
568 0 : if (attr.ap_setup_locked && *attr.ap_setup_locked) {
569 0 : ret = os_snprintf(pos, end - pos,
570 : "wps_ap_setup_locked=1\n");
571 0 : if (ret < 0 || ret >= end - pos)
572 0 : return pos - buf;
573 0 : pos += ret;
574 : }
575 :
576 0 : if (attr.selected_registrar && *attr.selected_registrar) {
577 0 : ret = os_snprintf(pos, end - pos,
578 : "wps_selected_registrar=1\n");
579 0 : if (ret < 0 || ret >= end - pos)
580 0 : return pos - buf;
581 0 : pos += ret;
582 : }
583 :
584 0 : if (attr.dev_password_id) {
585 0 : ret = os_snprintf(pos, end - pos,
586 : "wps_device_password_id=%u\n",
587 0 : WPA_GET_BE16(attr.dev_password_id));
588 0 : if (ret < 0 || ret >= end - pos)
589 0 : return pos - buf;
590 0 : pos += ret;
591 : }
592 :
593 0 : if (attr.sel_reg_config_methods) {
594 0 : ret = os_snprintf(pos, end - pos,
595 : "wps_selected_registrar_config_methods="
596 : "0x%04x\n",
597 0 : WPA_GET_BE16(attr.sel_reg_config_methods));
598 0 : if (ret < 0 || ret >= end - pos)
599 0 : return pos - buf;
600 0 : pos += ret;
601 : }
602 :
603 0 : if (attr.primary_dev_type) {
604 : char devtype[WPS_DEV_TYPE_BUFSIZE];
605 0 : 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 0 : if (ret < 0 || ret >= end - pos)
611 0 : return pos - buf;
612 0 : pos += ret;
613 : }
614 :
615 0 : if (attr.dev_name) {
616 0 : char *str = os_malloc(attr.dev_name_len + 1);
617 : size_t i;
618 0 : if (str == NULL)
619 0 : return pos - buf;
620 0 : for (i = 0; i < attr.dev_name_len; i++) {
621 0 : if (attr.dev_name[i] < 32)
622 0 : str[i] = '_';
623 : else
624 0 : str[i] = attr.dev_name[i];
625 : }
626 0 : str[i] = '\0';
627 0 : ret = os_snprintf(pos, end - pos, "wps_device_name=%s\n", str);
628 0 : os_free(str);
629 0 : if (ret < 0 || ret >= end - pos)
630 0 : return pos - buf;
631 0 : pos += ret;
632 : }
633 :
634 0 : if (attr.config_methods) {
635 0 : ret = os_snprintf(pos, end - pos,
636 : "wps_config_methods=0x%04x\n",
637 0 : WPA_GET_BE16(attr.config_methods));
638 0 : if (ret < 0 || ret >= end - pos)
639 0 : return pos - buf;
640 0 : pos += ret;
641 : }
642 :
643 0 : return pos - buf;
644 : }
645 :
646 :
647 2 : const char * wps_ei_str(enum wps_error_indication ei)
648 : {
649 2 : switch (ei) {
650 : case WPS_EI_NO_ERROR:
651 0 : return "No Error";
652 : case WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED:
653 0 : return "TKIP Only Prohibited";
654 : case WPS_EI_SECURITY_WEP_PROHIBITED:
655 2 : return "WEP Prohibited";
656 : case WPS_EI_AUTH_FAILURE:
657 0 : return "Authentication Failure";
658 : default:
659 0 : return "Unknown";
660 : }
661 : }
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