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DPP: Fix number of Authentication Request retry cases
[thirdparty/hostap.git] / wpa_supplicant / dpp_supplicant.c
1 /*
2 * wpa_supplicant - DPP
3 * Copyright (c) 2017, Qualcomm Atheros, Inc.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "common/dpp.h"
14 #include "common/gas.h"
15 #include "common/gas_server.h"
16 #include "rsn_supp/wpa.h"
17 #include "rsn_supp/pmksa_cache.h"
18 #include "wpa_supplicant_i.h"
19 #include "config.h"
20 #include "driver_i.h"
21 #include "offchannel.h"
22 #include "gas_query.h"
23 #include "bss.h"
24 #include "scan.h"
25 #include "notify.h"
26 #include "dpp_supplicant.h"
27
28
29 static int wpas_dpp_listen_start(struct wpa_supplicant *wpa_s,
30 unsigned int freq);
31 static void wpas_dpp_reply_wait_timeout(void *eloop_ctx, void *timeout_ctx);
32 static void wpas_dpp_auth_success(struct wpa_supplicant *wpa_s, int initiator);
33 static void wpas_dpp_tx_status(struct wpa_supplicant *wpa_s,
34 unsigned int freq, const u8 *dst,
35 const u8 *src, const u8 *bssid,
36 const u8 *data, size_t data_len,
37 enum offchannel_send_action_result result);
38 static void wpas_dpp_init_timeout(void *eloop_ctx, void *timeout_ctx);
39 static int wpas_dpp_auth_init_next(struct wpa_supplicant *wpa_s);
40 static void
41 wpas_dpp_tx_pkex_status(struct wpa_supplicant *wpa_s,
42 unsigned int freq, const u8 *dst,
43 const u8 *src, const u8 *bssid,
44 const u8 *data, size_t data_len,
45 enum offchannel_send_action_result result);
46
47 static const u8 broadcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
48
49 /* Use a hardcoded Transaction ID 1 in Peer Discovery frames since there is only
50 * a single transaction in progress at any point in time. */
51 static const u8 TRANSACTION_ID = 1;
52
53
54 static struct dpp_configurator *
55 dpp_configurator_get_id(struct wpa_supplicant *wpa_s, unsigned int id)
56 {
57 struct dpp_configurator *conf;
58
59 dl_list_for_each(conf, &wpa_s->dpp_configurator,
60 struct dpp_configurator, list) {
61 if (conf->id == id)
62 return conf;
63 }
64 return NULL;
65 }
66
67
68 static unsigned int wpas_dpp_next_id(struct wpa_supplicant *wpa_s)
69 {
70 struct dpp_bootstrap_info *bi;
71 unsigned int max_id = 0;
72
73 dl_list_for_each(bi, &wpa_s->dpp_bootstrap, struct dpp_bootstrap_info,
74 list) {
75 if (bi->id > max_id)
76 max_id = bi->id;
77 }
78 return max_id + 1;
79 }
80
81
82 /**
83 * wpas_dpp_qr_code - Parse and add DPP bootstrapping info from a QR Code
84 * @wpa_s: Pointer to wpa_supplicant data
85 * @cmd: DPP URI read from a QR Code
86 * Returns: Identifier of the stored info or -1 on failure
87 */
88 int wpas_dpp_qr_code(struct wpa_supplicant *wpa_s, const char *cmd)
89 {
90 struct dpp_bootstrap_info *bi;
91 struct dpp_authentication *auth = wpa_s->dpp_auth;
92
93 bi = dpp_parse_qr_code(cmd);
94 if (!bi)
95 return -1;
96
97 bi->id = wpas_dpp_next_id(wpa_s);
98 dl_list_add(&wpa_s->dpp_bootstrap, &bi->list);
99
100 if (auth && auth->response_pending &&
101 dpp_notify_new_qr_code(auth, bi) == 1) {
102 wpa_printf(MSG_DEBUG,
103 "DPP: Sending out pending authentication response");
104 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
105 " freq=%u type=%d",
106 MAC2STR(auth->peer_mac_addr), auth->curr_freq,
107 DPP_PA_AUTHENTICATION_RESP);
108 offchannel_send_action(wpa_s, auth->curr_freq,
109 auth->peer_mac_addr, wpa_s->own_addr,
110 broadcast,
111 wpabuf_head(auth->resp_msg),
112 wpabuf_len(auth->resp_msg),
113 500, wpas_dpp_tx_status, 0);
114 }
115
116 return bi->id;
117 }
118
119
120 static char * get_param(const char *cmd, const char *param)
121 {
122 const char *pos, *end;
123 char *val;
124 size_t len;
125
126 pos = os_strstr(cmd, param);
127 if (!pos)
128 return NULL;
129
130 pos += os_strlen(param);
131 end = os_strchr(pos, ' ');
132 if (end)
133 len = end - pos;
134 else
135 len = os_strlen(pos);
136 val = os_malloc(len + 1);
137 if (!val)
138 return NULL;
139 os_memcpy(val, pos, len);
140 val[len] = '\0';
141 return val;
142 }
143
144
145 int wpas_dpp_bootstrap_gen(struct wpa_supplicant *wpa_s, const char *cmd)
146 {
147 char *chan = NULL, *mac = NULL, *info = NULL, *pk = NULL, *curve = NULL;
148 char *key = NULL;
149 u8 *privkey = NULL;
150 size_t privkey_len = 0;
151 size_t len;
152 int ret = -1;
153 struct dpp_bootstrap_info *bi;
154
155 bi = os_zalloc(sizeof(*bi));
156 if (!bi)
157 goto fail;
158
159 if (os_strstr(cmd, "type=qrcode"))
160 bi->type = DPP_BOOTSTRAP_QR_CODE;
161 else if (os_strstr(cmd, "type=pkex"))
162 bi->type = DPP_BOOTSTRAP_PKEX;
163 else
164 goto fail;
165
166 chan = get_param(cmd, " chan=");
167 mac = get_param(cmd, " mac=");
168 info = get_param(cmd, " info=");
169 curve = get_param(cmd, " curve=");
170 key = get_param(cmd, " key=");
171
172 if (key) {
173 privkey_len = os_strlen(key) / 2;
174 privkey = os_malloc(privkey_len);
175 if (!privkey ||
176 hexstr2bin(key, privkey, privkey_len) < 0)
177 goto fail;
178 }
179
180 pk = dpp_keygen(bi, curve, privkey, privkey_len);
181 if (!pk)
182 goto fail;
183
184 len = 4; /* "DPP:" */
185 if (chan) {
186 if (dpp_parse_uri_chan_list(bi, chan) < 0)
187 goto fail;
188 len += 3 + os_strlen(chan); /* C:...; */
189 }
190 if (mac) {
191 if (dpp_parse_uri_mac(bi, mac) < 0)
192 goto fail;
193 len += 3 + os_strlen(mac); /* M:...; */
194 }
195 if (info) {
196 if (dpp_parse_uri_info(bi, info) < 0)
197 goto fail;
198 len += 3 + os_strlen(info); /* I:...; */
199 }
200 len += 4 + os_strlen(pk);
201 bi->uri = os_malloc(len + 1);
202 if (!bi->uri)
203 goto fail;
204 os_snprintf(bi->uri, len + 1, "DPP:%s%s%s%s%s%s%s%s%sK:%s;;",
205 chan ? "C:" : "", chan ? chan : "", chan ? ";" : "",
206 mac ? "M:" : "", mac ? mac : "", mac ? ";" : "",
207 info ? "I:" : "", info ? info : "", info ? ";" : "",
208 pk);
209 bi->id = wpas_dpp_next_id(wpa_s);
210 dl_list_add(&wpa_s->dpp_bootstrap, &bi->list);
211 ret = bi->id;
212 bi = NULL;
213 fail:
214 os_free(curve);
215 os_free(pk);
216 os_free(chan);
217 os_free(mac);
218 os_free(info);
219 str_clear_free(key);
220 bin_clear_free(privkey, privkey_len);
221 dpp_bootstrap_info_free(bi);
222 return ret;
223 }
224
225
226 static struct dpp_bootstrap_info *
227 dpp_bootstrap_get_id(struct wpa_supplicant *wpa_s, unsigned int id)
228 {
229 struct dpp_bootstrap_info *bi;
230
231 dl_list_for_each(bi, &wpa_s->dpp_bootstrap, struct dpp_bootstrap_info,
232 list) {
233 if (bi->id == id)
234 return bi;
235 }
236 return NULL;
237 }
238
239
240 static int dpp_bootstrap_del(struct wpa_supplicant *wpa_s, unsigned int id)
241 {
242 struct dpp_bootstrap_info *bi, *tmp;
243 int found = 0;
244
245 dl_list_for_each_safe(bi, tmp, &wpa_s->dpp_bootstrap,
246 struct dpp_bootstrap_info, list) {
247 if (id && bi->id != id)
248 continue;
249 found = 1;
250 dl_list_del(&bi->list);
251 dpp_bootstrap_info_free(bi);
252 }
253
254 if (id == 0)
255 return 0; /* flush succeeds regardless of entries found */
256 return found ? 0 : -1;
257 }
258
259
260 int wpas_dpp_bootstrap_remove(struct wpa_supplicant *wpa_s, const char *id)
261 {
262 unsigned int id_val;
263
264 if (os_strcmp(id, "*") == 0) {
265 id_val = 0;
266 } else {
267 id_val = atoi(id);
268 if (id_val == 0)
269 return -1;
270 }
271
272 return dpp_bootstrap_del(wpa_s, id_val);
273 }
274
275
276 const char * wpas_dpp_bootstrap_get_uri(struct wpa_supplicant *wpa_s,
277 unsigned int id)
278 {
279 struct dpp_bootstrap_info *bi;
280
281 bi = dpp_bootstrap_get_id(wpa_s, id);
282 if (!bi)
283 return NULL;
284 return bi->uri;
285 }
286
287
288 int wpas_dpp_bootstrap_info(struct wpa_supplicant *wpa_s, int id,
289 char *reply, int reply_size)
290 {
291 struct dpp_bootstrap_info *bi;
292
293 bi = dpp_bootstrap_get_id(wpa_s, id);
294 if (!bi)
295 return -1;
296 return os_snprintf(reply, reply_size, "type=%s\n"
297 "mac_addr=" MACSTR "\n"
298 "info=%s\n"
299 "num_freq=%u\n"
300 "curve=%s\n",
301 dpp_bootstrap_type_txt(bi->type),
302 MAC2STR(bi->mac_addr),
303 bi->info ? bi->info : "",
304 bi->num_freq,
305 bi->curve->name);
306 }
307
308
309 static void wpas_dpp_auth_resp_retry_timeout(void *eloop_ctx, void *timeout_ctx)
310 {
311 struct wpa_supplicant *wpa_s = eloop_ctx;
312 struct dpp_authentication *auth = wpa_s->dpp_auth;
313
314 if (!auth || !auth->resp_msg)
315 return;
316
317 wpa_printf(MSG_DEBUG,
318 "DPP: Retry Authentication Response after timeout");
319 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
320 " freq=%u type=%d",
321 MAC2STR(auth->peer_mac_addr), auth->curr_freq,
322 DPP_PA_AUTHENTICATION_RESP);
323 offchannel_send_action(wpa_s, auth->curr_freq, auth->peer_mac_addr,
324 wpa_s->own_addr, broadcast,
325 wpabuf_head(auth->resp_msg),
326 wpabuf_len(auth->resp_msg),
327 500, wpas_dpp_tx_status, 0);
328 }
329
330
331 static void wpas_dpp_auth_resp_retry(struct wpa_supplicant *wpa_s)
332 {
333 struct dpp_authentication *auth = wpa_s->dpp_auth;
334 unsigned int wait_time, max_tries;
335
336 if (!auth || !auth->resp_msg)
337 return;
338
339 if (wpa_s->dpp_resp_max_tries)
340 max_tries = wpa_s->dpp_resp_max_tries;
341 else
342 max_tries = 5;
343 auth->auth_resp_tries++;
344 if (auth->auth_resp_tries >= max_tries) {
345 wpa_printf(MSG_INFO, "DPP: No confirm received from initiator - stopping exchange");
346 offchannel_send_action_done(wpa_s);
347 dpp_auth_deinit(wpa_s->dpp_auth);
348 wpa_s->dpp_auth = NULL;
349 return;
350 }
351
352 if (wpa_s->dpp_resp_retry_time)
353 wait_time = wpa_s->dpp_resp_retry_time;
354 else
355 wait_time = 10000;
356 wpa_printf(MSG_DEBUG,
357 "DPP: Schedule retransmission of Authentication Response frame in %u ms",
358 wait_time);
359 eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
360 eloop_register_timeout(wait_time / 1000,
361 (wait_time % 1000) * 1000,
362 wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
363 }
364
365
366 static void wpas_dpp_tx_status(struct wpa_supplicant *wpa_s,
367 unsigned int freq, const u8 *dst,
368 const u8 *src, const u8 *bssid,
369 const u8 *data, size_t data_len,
370 enum offchannel_send_action_result result)
371 {
372 const char *res_txt;
373 struct dpp_authentication *auth = wpa_s->dpp_auth;
374
375 res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
376 (result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
377 "FAILED");
378 wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
379 " result=%s", freq, MAC2STR(dst), res_txt);
380 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
381 " freq=%u result=%s", MAC2STR(dst), freq, res_txt);
382
383 if (!wpa_s->dpp_auth) {
384 wpa_printf(MSG_DEBUG,
385 "DPP: Ignore TX status since there is no ongoing authentication exchange");
386 return;
387 }
388
389 if (wpa_s->dpp_auth->remove_on_tx_status) {
390 wpa_printf(MSG_DEBUG,
391 "DPP: Terminate authentication exchange due to an earlier error");
392 eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
393 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
394 eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s,
395 NULL);
396 offchannel_send_action_done(wpa_s);
397 dpp_auth_deinit(wpa_s->dpp_auth);
398 wpa_s->dpp_auth = NULL;
399 return;
400 }
401
402 if (wpa_s->dpp_auth_ok_on_ack)
403 wpas_dpp_auth_success(wpa_s, 1);
404
405 if (!is_broadcast_ether_addr(dst) &&
406 result != OFFCHANNEL_SEND_ACTION_SUCCESS) {
407 wpa_printf(MSG_DEBUG,
408 "DPP: Unicast DPP Action frame was not ACKed");
409 if (auth->waiting_auth_resp) {
410 /* In case of DPP Authentication Request frame, move to
411 * the next channel immediately. */
412 offchannel_send_action_done(wpa_s);
413 wpas_dpp_auth_init_next(wpa_s);
414 return;
415 }
416 if (auth->waiting_auth_conf) {
417 wpas_dpp_auth_resp_retry(wpa_s);
418 return;
419 }
420 }
421
422 if (!is_broadcast_ether_addr(dst) && auth->waiting_auth_resp &&
423 result == OFFCHANNEL_SEND_ACTION_SUCCESS) {
424 /* Allow timeout handling to stop iteration if no response is
425 * received from a peer that has ACKed a request. */
426 auth->auth_req_ack = 1;
427 }
428
429 if (!wpa_s->dpp_auth_ok_on_ack && wpa_s->dpp_auth->neg_freq > 0 &&
430 wpa_s->dpp_auth->curr_freq != wpa_s->dpp_auth->neg_freq) {
431 wpa_printf(MSG_DEBUG,
432 "DPP: Move from curr_freq %u MHz to neg_freq %u MHz for response",
433 wpa_s->dpp_auth->curr_freq,
434 wpa_s->dpp_auth->neg_freq);
435 offchannel_send_action_done(wpa_s);
436 wpas_dpp_listen_start(wpa_s, wpa_s->dpp_auth->neg_freq);
437 }
438 }
439
440
441 static void wpas_dpp_reply_wait_timeout(void *eloop_ctx, void *timeout_ctx)
442 {
443 struct wpa_supplicant *wpa_s = eloop_ctx;
444 struct dpp_authentication *auth = wpa_s->dpp_auth;
445 unsigned int freq;
446 struct os_reltime now, diff;
447 unsigned int wait_time, diff_ms;
448
449 if (!auth || !auth->waiting_auth_resp)
450 return;
451
452 wait_time = wpa_s->dpp_resp_wait_time ?
453 wpa_s->dpp_resp_wait_time : 2000;
454 os_get_reltime(&now);
455 os_reltime_sub(&now, &wpa_s->dpp_last_init, &diff);
456 diff_ms = diff.sec * 1000 + diff.usec / 1000;
457 wpa_printf(MSG_DEBUG,
458 "DPP: Reply wait timeout - wait_time=%u diff_ms=%u",
459 wait_time, diff_ms);
460
461 if (auth->auth_req_ack && diff_ms >= wait_time) {
462 /* Peer ACK'ed Authentication Request frame, but did not reply
463 * with Authentication Response frame within two seconds. */
464 wpa_printf(MSG_INFO,
465 "DPP: No response received from responder - stopping initiation attempt");
466 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_INIT_FAILED);
467 offchannel_send_action_done(wpa_s);
468 wpas_dpp_listen_stop(wpa_s);
469 dpp_auth_deinit(auth);
470 wpa_s->dpp_auth = NULL;
471 return;
472 }
473
474 if (diff_ms >= wait_time) {
475 /* Authentication Request frame was not ACK'ed and no reply
476 * was receiving within two seconds. */
477 wpa_printf(MSG_DEBUG,
478 "DPP: Continue Initiator channel iteration");
479 offchannel_send_action_done(wpa_s);
480 wpas_dpp_listen_stop(wpa_s);
481 wpas_dpp_auth_init_next(wpa_s);
482 return;
483 }
484
485 /* Driver did not support 2000 ms long wait_time with TX command, so
486 * schedule listen operation to continue waiting for the response.
487 *
488 * DPP listen operations continue until stopped, so simply schedule a
489 * new call to this function at the point when the two second reply
490 * wait has expired. */
491 wait_time -= diff_ms;
492
493 freq = auth->curr_freq;
494 if (auth->neg_freq > 0)
495 freq = auth->neg_freq;
496 wpa_printf(MSG_DEBUG,
497 "DPP: Continue reply wait on channel %u MHz for %u ms",
498 freq, wait_time);
499 wpa_s->dpp_in_response_listen = 1;
500 wpas_dpp_listen_start(wpa_s, freq);
501
502 eloop_register_timeout(wait_time / 1000, (wait_time % 1000) * 1000,
503 wpas_dpp_reply_wait_timeout, wpa_s, NULL);
504 }
505
506
507 static void wpas_dpp_set_testing_options(struct wpa_supplicant *wpa_s,
508 struct dpp_authentication *auth)
509 {
510 #ifdef CONFIG_TESTING_OPTIONS
511 if (wpa_s->dpp_config_obj_override)
512 auth->config_obj_override =
513 os_strdup(wpa_s->dpp_config_obj_override);
514 if (wpa_s->dpp_discovery_override)
515 auth->discovery_override =
516 os_strdup(wpa_s->dpp_discovery_override);
517 if (wpa_s->dpp_groups_override)
518 auth->groups_override =
519 os_strdup(wpa_s->dpp_groups_override);
520 auth->ignore_netaccesskey_mismatch =
521 wpa_s->dpp_ignore_netaccesskey_mismatch;
522 #endif /* CONFIG_TESTING_OPTIONS */
523 }
524
525
526 static void wpas_dpp_set_configurator(struct wpa_supplicant *wpa_s,
527 struct dpp_authentication *auth,
528 const char *cmd)
529 {
530 const char *pos, *end;
531 struct dpp_configuration *conf_sta = NULL, *conf_ap = NULL;
532 struct dpp_configurator *conf = NULL;
533 u8 ssid[32] = { "test" };
534 size_t ssid_len = 4;
535 char pass[64] = { };
536 size_t pass_len = 0;
537 u8 psk[PMK_LEN];
538 int psk_set = 0;
539
540 if (!cmd)
541 return;
542
543 wpa_printf(MSG_DEBUG, "DPP: Set configurator parameters: %s", cmd);
544 pos = os_strstr(cmd, " ssid=");
545 if (pos) {
546 pos += 6;
547 end = os_strchr(pos, ' ');
548 ssid_len = end ? (size_t) (end - pos) : os_strlen(pos);
549 ssid_len /= 2;
550 if (ssid_len > sizeof(ssid) ||
551 hexstr2bin(pos, ssid, ssid_len) < 0)
552 goto fail;
553 }
554
555 pos = os_strstr(cmd, " pass=");
556 if (pos) {
557 pos += 6;
558 end = os_strchr(pos, ' ');
559 pass_len = end ? (size_t) (end - pos) : os_strlen(pos);
560 pass_len /= 2;
561 if (pass_len > sizeof(pass) - 1 || pass_len < 8 ||
562 hexstr2bin(pos, (u8 *) pass, pass_len) < 0)
563 goto fail;
564 }
565
566 pos = os_strstr(cmd, " psk=");
567 if (pos) {
568 pos += 5;
569 if (hexstr2bin(pos, psk, PMK_LEN) < 0)
570 goto fail;
571 psk_set = 1;
572 }
573
574 if (os_strstr(cmd, " conf=sta-")) {
575 conf_sta = os_zalloc(sizeof(struct dpp_configuration));
576 if (!conf_sta)
577 goto fail;
578 os_memcpy(conf_sta->ssid, ssid, ssid_len);
579 conf_sta->ssid_len = ssid_len;
580 if (os_strstr(cmd, " conf=sta-psk") ||
581 os_strstr(cmd, " conf=sta-sae") ||
582 os_strstr(cmd, " conf=sta-psk-sae")) {
583 if (os_strstr(cmd, " conf=sta-psk-sae"))
584 conf_sta->akm = DPP_AKM_PSK_SAE;
585 else if (os_strstr(cmd, " conf=sta-sae"))
586 conf_sta->akm = DPP_AKM_SAE;
587 else
588 conf_sta->akm = DPP_AKM_PSK;
589 if (psk_set) {
590 os_memcpy(conf_sta->psk, psk, PMK_LEN);
591 } else {
592 conf_sta->passphrase = os_strdup(pass);
593 if (!conf_sta->passphrase)
594 goto fail;
595 }
596 } else if (os_strstr(cmd, " conf=sta-dpp")) {
597 conf_sta->akm = DPP_AKM_DPP;
598 } else {
599 goto fail;
600 }
601 }
602
603 if (os_strstr(cmd, " conf=ap-")) {
604 conf_ap = os_zalloc(sizeof(struct dpp_configuration));
605 if (!conf_ap)
606 goto fail;
607 os_memcpy(conf_ap->ssid, ssid, ssid_len);
608 conf_ap->ssid_len = ssid_len;
609 if (os_strstr(cmd, " conf=ap-psk") ||
610 os_strstr(cmd, " conf=ap-sae") ||
611 os_strstr(cmd, " conf=ap-psk-sae")) {
612 if (os_strstr(cmd, " conf=ap-psk-sae"))
613 conf_ap->akm = DPP_AKM_PSK_SAE;
614 else if (os_strstr(cmd, " conf=ap-sae"))
615 conf_ap->akm = DPP_AKM_SAE;
616 else
617 conf_ap->akm = DPP_AKM_PSK;
618 if (psk_set) {
619 os_memcpy(conf_ap->psk, psk, PMK_LEN);
620 } else {
621 conf_ap->passphrase = os_strdup(pass);
622 if (!conf_ap->passphrase)
623 goto fail;
624 }
625 } else if (os_strstr(cmd, " conf=ap-dpp")) {
626 conf_ap->akm = DPP_AKM_DPP;
627 } else {
628 goto fail;
629 }
630 }
631
632 pos = os_strstr(cmd, " expiry=");
633 if (pos) {
634 long int val;
635
636 pos += 8;
637 val = strtol(pos, NULL, 0);
638 if (val <= 0)
639 goto fail;
640 if (conf_sta)
641 conf_sta->netaccesskey_expiry = val;
642 if (conf_ap)
643 conf_ap->netaccesskey_expiry = val;
644 }
645
646 pos = os_strstr(cmd, " configurator=");
647 if (pos) {
648 pos += 14;
649 conf = dpp_configurator_get_id(wpa_s, atoi(pos));
650 if (!conf) {
651 wpa_printf(MSG_INFO,
652 "DPP: Could not find the specified configurator");
653 goto fail;
654 }
655 }
656 auth->conf_sta = conf_sta;
657 auth->conf_ap = conf_ap;
658 auth->conf = conf;
659 return;
660
661 fail:
662 wpa_printf(MSG_DEBUG, "DPP: Failed to set configurator parameters");
663 dpp_configuration_free(conf_sta);
664 dpp_configuration_free(conf_ap);
665 }
666
667
668 static void wpas_dpp_init_timeout(void *eloop_ctx, void *timeout_ctx)
669 {
670 struct wpa_supplicant *wpa_s = eloop_ctx;
671
672 if (!wpa_s->dpp_auth)
673 return;
674 wpa_printf(MSG_DEBUG, "DPP: Retry initiation after timeout");
675 wpas_dpp_auth_init_next(wpa_s);
676 }
677
678
679 static int wpas_dpp_auth_init_next(struct wpa_supplicant *wpa_s)
680 {
681 struct dpp_authentication *auth = wpa_s->dpp_auth;
682 const u8 *dst;
683 unsigned int wait_time, max_wait_time, freq, max_tries, used;
684 struct os_reltime now, diff;
685
686 wpa_s->dpp_in_response_listen = 0;
687 if (!auth)
688 return -1;
689
690 if (auth->freq_idx == 0)
691 os_get_reltime(&wpa_s->dpp_init_iter_start);
692
693 if (auth->freq_idx >= auth->num_freq) {
694 auth->num_freq_iters++;
695 if (wpa_s->dpp_init_max_tries)
696 max_tries = wpa_s->dpp_init_max_tries;
697 else
698 max_tries = 5;
699 if (auth->num_freq_iters >= max_tries || auth->auth_req_ack) {
700 wpa_printf(MSG_INFO,
701 "DPP: No response received from responder - stopping initiation attempt");
702 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_INIT_FAILED);
703 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout,
704 wpa_s, NULL);
705 offchannel_send_action_done(wpa_s);
706 dpp_auth_deinit(wpa_s->dpp_auth);
707 wpa_s->dpp_auth = NULL;
708 return -1;
709 }
710 auth->freq_idx = 0;
711 eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
712 if (wpa_s->dpp_init_retry_time)
713 wait_time = wpa_s->dpp_init_retry_time;
714 else
715 wait_time = 10000;
716 os_get_reltime(&now);
717 os_reltime_sub(&now, &wpa_s->dpp_init_iter_start, &diff);
718 used = diff.sec * 1000 + diff.usec / 1000;
719 if (used > wait_time)
720 wait_time = 0;
721 else
722 wait_time -= used;
723 wpa_printf(MSG_DEBUG, "DPP: Next init attempt in %u ms",
724 wait_time);
725 eloop_register_timeout(wait_time / 1000,
726 (wait_time % 1000) * 1000,
727 wpas_dpp_init_timeout, wpa_s,
728 NULL);
729 return 0;
730 }
731 freq = auth->freq[auth->freq_idx++];
732 auth->curr_freq = freq;
733
734 if (is_zero_ether_addr(auth->peer_bi->mac_addr))
735 dst = broadcast;
736 else
737 dst = auth->peer_bi->mac_addr;
738 wpa_s->dpp_auth_ok_on_ack = 0;
739 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
740 wait_time = wpa_s->max_remain_on_chan;
741 max_wait_time = wpa_s->dpp_resp_wait_time ?
742 wpa_s->dpp_resp_wait_time : 2000;
743 if (wait_time > max_wait_time)
744 wait_time = max_wait_time;
745 wait_time += 10; /* give the driver some extra time to complete */
746 eloop_register_timeout(wait_time / 1000, (wait_time % 1000) * 1000,
747 wpas_dpp_reply_wait_timeout,
748 wpa_s, NULL);
749 wait_time -= 10;
750 if (auth->neg_freq > 0 && freq != auth->neg_freq) {
751 wpa_printf(MSG_DEBUG,
752 "DPP: Initiate on %u MHz and move to neg_freq %u MHz for response",
753 freq, auth->neg_freq);
754 }
755 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
756 MAC2STR(dst), freq, DPP_PA_AUTHENTICATION_REQ);
757 auth->auth_req_ack = 0;
758 os_get_reltime(&wpa_s->dpp_last_init);
759 return offchannel_send_action(wpa_s, freq, dst,
760 wpa_s->own_addr, broadcast,
761 wpabuf_head(auth->req_msg),
762 wpabuf_len(auth->req_msg),
763 wait_time, wpas_dpp_tx_status, 0);
764 }
765
766
767 int wpas_dpp_auth_init(struct wpa_supplicant *wpa_s, const char *cmd)
768 {
769 const char *pos;
770 struct dpp_bootstrap_info *peer_bi, *own_bi = NULL;
771 u8 allowed_roles = DPP_CAPAB_CONFIGURATOR;
772 unsigned int neg_freq = 0;
773
774 wpa_s->dpp_gas_client = 0;
775
776 pos = os_strstr(cmd, " peer=");
777 if (!pos)
778 return -1;
779 pos += 6;
780 peer_bi = dpp_bootstrap_get_id(wpa_s, atoi(pos));
781 if (!peer_bi) {
782 wpa_printf(MSG_INFO,
783 "DPP: Could not find bootstrapping info for the identified peer");
784 return -1;
785 }
786
787 pos = os_strstr(cmd, " own=");
788 if (pos) {
789 pos += 5;
790 own_bi = dpp_bootstrap_get_id(wpa_s, atoi(pos));
791 if (!own_bi) {
792 wpa_printf(MSG_INFO,
793 "DPP: Could not find bootstrapping info for the identified local entry");
794 return -1;
795 }
796
797 if (peer_bi->curve != own_bi->curve) {
798 wpa_printf(MSG_INFO,
799 "DPP: Mismatching curves in bootstrapping info (peer=%s own=%s)",
800 peer_bi->curve->name, own_bi->curve->name);
801 return -1;
802 }
803 }
804
805 pos = os_strstr(cmd, " role=");
806 if (pos) {
807 pos += 6;
808 if (os_strncmp(pos, "configurator", 12) == 0)
809 allowed_roles = DPP_CAPAB_CONFIGURATOR;
810 else if (os_strncmp(pos, "enrollee", 8) == 0)
811 allowed_roles = DPP_CAPAB_ENROLLEE;
812 else if (os_strncmp(pos, "either", 6) == 0)
813 allowed_roles = DPP_CAPAB_CONFIGURATOR |
814 DPP_CAPAB_ENROLLEE;
815 else
816 goto fail;
817 }
818
819 pos = os_strstr(cmd, " netrole=");
820 if (pos) {
821 pos += 9;
822 wpa_s->dpp_netrole_ap = os_strncmp(pos, "ap", 2) == 0;
823 }
824
825 pos = os_strstr(cmd, " neg_freq=");
826 if (pos)
827 neg_freq = atoi(pos + 10);
828
829 if (wpa_s->dpp_auth) {
830 eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
831 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
832 eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s,
833 NULL);
834 offchannel_send_action_done(wpa_s);
835 dpp_auth_deinit(wpa_s->dpp_auth);
836 }
837 wpa_s->dpp_auth = dpp_auth_init(wpa_s, peer_bi, own_bi, allowed_roles,
838 neg_freq,
839 wpa_s->hw.modes, wpa_s->hw.num_modes);
840 if (!wpa_s->dpp_auth)
841 goto fail;
842 wpas_dpp_set_testing_options(wpa_s, wpa_s->dpp_auth);
843 wpas_dpp_set_configurator(wpa_s, wpa_s->dpp_auth, cmd);
844
845 wpa_s->dpp_auth->neg_freq = neg_freq;
846
847 if (!is_zero_ether_addr(peer_bi->mac_addr))
848 os_memcpy(wpa_s->dpp_auth->peer_mac_addr, peer_bi->mac_addr,
849 ETH_ALEN);
850
851 return wpas_dpp_auth_init_next(wpa_s);
852 fail:
853 return -1;
854 }
855
856
857 struct wpas_dpp_listen_work {
858 unsigned int freq;
859 unsigned int duration;
860 struct wpabuf *probe_resp_ie;
861 };
862
863
864 static void wpas_dpp_listen_work_free(struct wpas_dpp_listen_work *lwork)
865 {
866 if (!lwork)
867 return;
868 os_free(lwork);
869 }
870
871
872 static void wpas_dpp_listen_work_done(struct wpa_supplicant *wpa_s)
873 {
874 struct wpas_dpp_listen_work *lwork;
875
876 if (!wpa_s->dpp_listen_work)
877 return;
878
879 lwork = wpa_s->dpp_listen_work->ctx;
880 wpas_dpp_listen_work_free(lwork);
881 radio_work_done(wpa_s->dpp_listen_work);
882 wpa_s->dpp_listen_work = NULL;
883 }
884
885
886 static void dpp_start_listen_cb(struct wpa_radio_work *work, int deinit)
887 {
888 struct wpa_supplicant *wpa_s = work->wpa_s;
889 struct wpas_dpp_listen_work *lwork = work->ctx;
890
891 if (deinit) {
892 if (work->started) {
893 wpa_s->dpp_listen_work = NULL;
894 wpas_dpp_listen_stop(wpa_s);
895 }
896 wpas_dpp_listen_work_free(lwork);
897 return;
898 }
899
900 wpa_s->dpp_listen_work = work;
901
902 wpa_s->dpp_pending_listen_freq = lwork->freq;
903
904 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq,
905 wpa_s->max_remain_on_chan) < 0) {
906 wpa_printf(MSG_DEBUG,
907 "DPP: Failed to request the driver to remain on channel (%u MHz) for listen",
908 lwork->freq);
909 wpas_dpp_listen_work_done(wpa_s);
910 wpa_s->dpp_pending_listen_freq = 0;
911 return;
912 }
913 wpa_s->off_channel_freq = 0;
914 wpa_s->roc_waiting_drv_freq = lwork->freq;
915 }
916
917
918 static int wpas_dpp_listen_start(struct wpa_supplicant *wpa_s,
919 unsigned int freq)
920 {
921 struct wpas_dpp_listen_work *lwork;
922
923 if (wpa_s->dpp_listen_work) {
924 wpa_printf(MSG_DEBUG,
925 "DPP: Reject start_listen since dpp_listen_work already exists");
926 return -1;
927 }
928
929 if (wpa_s->dpp_listen_freq)
930 wpas_dpp_listen_stop(wpa_s);
931 wpa_s->dpp_listen_freq = freq;
932
933 lwork = os_zalloc(sizeof(*lwork));
934 if (!lwork)
935 return -1;
936 lwork->freq = freq;
937
938 if (radio_add_work(wpa_s, freq, "dpp-listen", 0, dpp_start_listen_cb,
939 lwork) < 0) {
940 wpas_dpp_listen_work_free(lwork);
941 return -1;
942 }
943
944 return 0;
945 }
946
947
948 int wpas_dpp_listen(struct wpa_supplicant *wpa_s, const char *cmd)
949 {
950 int freq;
951
952 freq = atoi(cmd);
953 if (freq <= 0)
954 return -1;
955
956 if (os_strstr(cmd, " role=configurator"))
957 wpa_s->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR;
958 else if (os_strstr(cmd, " role=enrollee"))
959 wpa_s->dpp_allowed_roles = DPP_CAPAB_ENROLLEE;
960 else
961 wpa_s->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR |
962 DPP_CAPAB_ENROLLEE;
963 wpa_s->dpp_qr_mutual = os_strstr(cmd, " qr=mutual") != NULL;
964 wpa_s->dpp_netrole_ap = os_strstr(cmd, " netrole=ap") != NULL;
965 if (wpa_s->dpp_listen_freq == (unsigned int) freq) {
966 wpa_printf(MSG_DEBUG, "DPP: Already listening on %u MHz",
967 freq);
968 return 0;
969 }
970
971 return wpas_dpp_listen_start(wpa_s, freq);
972 }
973
974
975 void wpas_dpp_listen_stop(struct wpa_supplicant *wpa_s)
976 {
977 wpa_s->dpp_in_response_listen = 0;
978 if (!wpa_s->dpp_listen_freq)
979 return;
980
981 wpa_printf(MSG_DEBUG, "DPP: Stop listen on %u MHz",
982 wpa_s->dpp_listen_freq);
983 wpa_drv_cancel_remain_on_channel(wpa_s);
984 wpa_s->dpp_listen_freq = 0;
985 wpas_dpp_listen_work_done(wpa_s);
986 }
987
988
989 void wpas_dpp_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
990 unsigned int freq)
991 {
992 if (!wpa_s->dpp_listen_freq && !wpa_s->dpp_pending_listen_freq)
993 return;
994
995 wpa_printf(MSG_DEBUG,
996 "DPP: remain-on-channel callback (off_channel_freq=%u dpp_pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u)",
997 wpa_s->off_channel_freq, wpa_s->dpp_pending_listen_freq,
998 wpa_s->roc_waiting_drv_freq, freq);
999 if (wpa_s->off_channel_freq &&
1000 wpa_s->off_channel_freq == wpa_s->dpp_pending_listen_freq) {
1001 wpa_printf(MSG_DEBUG, "DPP: Listen on %u MHz started", freq);
1002 wpa_s->dpp_pending_listen_freq = 0;
1003 } else {
1004 wpa_printf(MSG_DEBUG,
1005 "DPP: Ignore remain-on-channel callback (off_channel_freq=%u dpp_pending_listen_freq=%d freq=%u)",
1006 wpa_s->off_channel_freq,
1007 wpa_s->dpp_pending_listen_freq, freq);
1008 }
1009 }
1010
1011
1012 void wpas_dpp_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
1013 unsigned int freq)
1014 {
1015 wpas_dpp_listen_work_done(wpa_s);
1016
1017 if (wpa_s->dpp_auth && wpa_s->dpp_in_response_listen) {
1018 unsigned int new_freq;
1019
1020 /* Continue listen with a new remain-on-channel */
1021 if (wpa_s->dpp_auth->neg_freq > 0)
1022 new_freq = wpa_s->dpp_auth->neg_freq;
1023 else
1024 new_freq = wpa_s->dpp_auth->curr_freq;
1025 wpa_printf(MSG_DEBUG,
1026 "DPP: Continue wait on %u MHz for the ongoing DPP provisioning session",
1027 new_freq);
1028 wpas_dpp_listen_start(wpa_s, new_freq);
1029 return;
1030 }
1031
1032 if (wpa_s->dpp_listen_freq) {
1033 /* Continue listen with a new remain-on-channel */
1034 wpas_dpp_listen_start(wpa_s, wpa_s->dpp_listen_freq);
1035 }
1036 }
1037
1038
1039 static void wpas_dpp_rx_auth_req(struct wpa_supplicant *wpa_s, const u8 *src,
1040 const u8 *hdr, const u8 *buf, size_t len,
1041 unsigned int freq)
1042 {
1043 const u8 *r_bootstrap, *i_bootstrap;
1044 u16 r_bootstrap_len, i_bootstrap_len;
1045 struct dpp_bootstrap_info *bi, *own_bi = NULL, *peer_bi = NULL;
1046
1047 wpa_printf(MSG_DEBUG, "DPP: Authentication Request from " MACSTR,
1048 MAC2STR(src));
1049
1050 r_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_R_BOOTSTRAP_KEY_HASH,
1051 &r_bootstrap_len);
1052 if (!r_bootstrap || r_bootstrap_len != SHA256_MAC_LEN) {
1053 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
1054 "Missing or invalid required Responder Bootstrapping Key Hash attribute");
1055 return;
1056 }
1057 wpa_hexdump(MSG_MSGDUMP, "DPP: Responder Bootstrapping Key Hash",
1058 r_bootstrap, r_bootstrap_len);
1059
1060 i_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_I_BOOTSTRAP_KEY_HASH,
1061 &i_bootstrap_len);
1062 if (!i_bootstrap || i_bootstrap_len != SHA256_MAC_LEN) {
1063 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
1064 "Missing or invalid required Initiator Bootstrapping Key Hash attribute");
1065 return;
1066 }
1067 wpa_hexdump(MSG_MSGDUMP, "DPP: Initiator Bootstrapping Key Hash",
1068 i_bootstrap, i_bootstrap_len);
1069
1070 /* Try to find own and peer bootstrapping key matches based on the
1071 * received hash values */
1072 dl_list_for_each(bi, &wpa_s->dpp_bootstrap, struct dpp_bootstrap_info,
1073 list) {
1074 if (!own_bi && bi->own &&
1075 os_memcmp(bi->pubkey_hash, r_bootstrap,
1076 SHA256_MAC_LEN) == 0) {
1077 wpa_printf(MSG_DEBUG,
1078 "DPP: Found matching own bootstrapping information");
1079 own_bi = bi;
1080 }
1081
1082 if (!peer_bi && !bi->own &&
1083 os_memcmp(bi->pubkey_hash, i_bootstrap,
1084 SHA256_MAC_LEN) == 0) {
1085 wpa_printf(MSG_DEBUG,
1086 "DPP: Found matching peer bootstrapping information");
1087 peer_bi = bi;
1088 }
1089
1090 if (own_bi && peer_bi)
1091 break;
1092 }
1093
1094 if (!own_bi) {
1095 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
1096 "No matching own bootstrapping key found - ignore message");
1097 return;
1098 }
1099
1100 if (wpa_s->dpp_auth) {
1101 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
1102 "Already in DPP authentication exchange - ignore new one");
1103 return;
1104 }
1105
1106 wpa_s->dpp_gas_client = 0;
1107 wpa_s->dpp_auth_ok_on_ack = 0;
1108 wpa_s->dpp_auth = dpp_auth_req_rx(wpa_s, wpa_s->dpp_allowed_roles,
1109 wpa_s->dpp_qr_mutual,
1110 peer_bi, own_bi, freq, hdr, buf, len);
1111 if (!wpa_s->dpp_auth) {
1112 wpa_printf(MSG_DEBUG, "DPP: No response generated");
1113 return;
1114 }
1115 wpas_dpp_set_testing_options(wpa_s, wpa_s->dpp_auth);
1116 wpas_dpp_set_configurator(wpa_s, wpa_s->dpp_auth,
1117 wpa_s->dpp_configurator_params);
1118 os_memcpy(wpa_s->dpp_auth->peer_mac_addr, src, ETH_ALEN);
1119
1120 if (wpa_s->dpp_listen_freq &&
1121 wpa_s->dpp_listen_freq != wpa_s->dpp_auth->curr_freq) {
1122 wpa_printf(MSG_DEBUG,
1123 "DPP: Stop listen on %u MHz to allow response on the request %u MHz",
1124 wpa_s->dpp_listen_freq, wpa_s->dpp_auth->curr_freq);
1125 wpas_dpp_listen_stop(wpa_s);
1126 }
1127
1128 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1129 MAC2STR(src), wpa_s->dpp_auth->curr_freq,
1130 DPP_PA_AUTHENTICATION_RESP);
1131 offchannel_send_action(wpa_s, wpa_s->dpp_auth->curr_freq,
1132 src, wpa_s->own_addr, broadcast,
1133 wpabuf_head(wpa_s->dpp_auth->resp_msg),
1134 wpabuf_len(wpa_s->dpp_auth->resp_msg),
1135 500, wpas_dpp_tx_status, 0);
1136 }
1137
1138
1139 static void wpas_dpp_start_gas_server(struct wpa_supplicant *wpa_s)
1140 {
1141 /* TODO: stop wait and start ROC */
1142 }
1143
1144
1145 static struct wpa_ssid * wpas_dpp_add_network(struct wpa_supplicant *wpa_s,
1146 struct dpp_authentication *auth)
1147 {
1148 struct wpa_ssid *ssid;
1149
1150 ssid = wpa_config_add_network(wpa_s->conf);
1151 if (!ssid)
1152 return NULL;
1153 wpas_notify_network_added(wpa_s, ssid);
1154 wpa_config_set_network_defaults(ssid);
1155 ssid->disabled = 1;
1156
1157 ssid->ssid = os_malloc(auth->ssid_len);
1158 if (!ssid->ssid)
1159 goto fail;
1160 os_memcpy(ssid->ssid, auth->ssid, auth->ssid_len);
1161 ssid->ssid_len = auth->ssid_len;
1162
1163 if (auth->connector) {
1164 ssid->key_mgmt = WPA_KEY_MGMT_DPP;
1165 ssid->ieee80211w = 1;
1166 ssid->dpp_connector = os_strdup(auth->connector);
1167 if (!ssid->dpp_connector)
1168 goto fail;
1169 }
1170
1171 if (auth->c_sign_key) {
1172 ssid->dpp_csign = os_malloc(wpabuf_len(auth->c_sign_key));
1173 if (!ssid->dpp_csign)
1174 goto fail;
1175 os_memcpy(ssid->dpp_csign, wpabuf_head(auth->c_sign_key),
1176 wpabuf_len(auth->c_sign_key));
1177 ssid->dpp_csign_len = wpabuf_len(auth->c_sign_key);
1178 }
1179
1180 if (auth->net_access_key) {
1181 ssid->dpp_netaccesskey =
1182 os_malloc(wpabuf_len(auth->net_access_key));
1183 if (!ssid->dpp_netaccesskey)
1184 goto fail;
1185 os_memcpy(ssid->dpp_netaccesskey,
1186 wpabuf_head(auth->net_access_key),
1187 wpabuf_len(auth->net_access_key));
1188 ssid->dpp_netaccesskey_len = wpabuf_len(auth->net_access_key);
1189 ssid->dpp_netaccesskey_expiry = auth->net_access_key_expiry;
1190 }
1191
1192 if (!auth->connector) {
1193 ssid->key_mgmt = 0;
1194 if (auth->akm == DPP_AKM_PSK || auth->akm == DPP_AKM_PSK_SAE)
1195 ssid->key_mgmt |= WPA_KEY_MGMT_PSK |
1196 WPA_KEY_MGMT_PSK_SHA256 | WPA_KEY_MGMT_FT_PSK;
1197 if (auth->akm == DPP_AKM_SAE || auth->akm == DPP_AKM_PSK_SAE)
1198 ssid->key_mgmt |= WPA_KEY_MGMT_SAE |
1199 WPA_KEY_MGMT_FT_SAE;
1200 ssid->ieee80211w = 1;
1201 if (auth->passphrase[0]) {
1202 if (wpa_config_set_quoted(ssid, "psk",
1203 auth->passphrase) < 0)
1204 goto fail;
1205 wpa_config_update_psk(ssid);
1206 ssid->export_keys = 1;
1207 } else {
1208 ssid->psk_set = auth->psk_set;
1209 os_memcpy(ssid->psk, auth->psk, PMK_LEN);
1210 }
1211 }
1212
1213 return ssid;
1214 fail:
1215 wpas_notify_network_removed(wpa_s, ssid);
1216 wpa_config_remove_network(wpa_s->conf, ssid->id);
1217 return NULL;
1218 }
1219
1220
1221 static void wpas_dpp_process_config(struct wpa_supplicant *wpa_s,
1222 struct dpp_authentication *auth)
1223 {
1224 struct wpa_ssid *ssid;
1225
1226 if (wpa_s->conf->dpp_config_processing < 1)
1227 return;
1228
1229 ssid = wpas_dpp_add_network(wpa_s, auth);
1230 if (!ssid)
1231 return;
1232
1233 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_NETWORK_ID "%d", ssid->id);
1234 if (wpa_s->conf->dpp_config_processing < 2)
1235 return;
1236
1237 wpa_printf(MSG_DEBUG, "DPP: Trying to connect to the new network");
1238 ssid->disabled = 0;
1239 wpa_s->disconnected = 0;
1240 wpa_s->reassociate = 1;
1241 wpa_s->scan_runs = 0;
1242 wpa_s->normal_scans = 0;
1243 wpa_supplicant_cancel_sched_scan(wpa_s);
1244 wpa_supplicant_req_scan(wpa_s, 0, 0);
1245 }
1246
1247
1248 static void wpas_dpp_handle_config_obj(struct wpa_supplicant *wpa_s,
1249 struct dpp_authentication *auth)
1250 {
1251 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_RECEIVED);
1252 if (auth->ssid_len)
1253 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONFOBJ_SSID "%s",
1254 wpa_ssid_txt(auth->ssid, auth->ssid_len));
1255 if (auth->connector) {
1256 /* TODO: Save the Connector and consider using a command
1257 * to fetch the value instead of sending an event with
1258 * it. The Connector could end up being larger than what
1259 * most clients are ready to receive as an event
1260 * message. */
1261 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONNECTOR "%s",
1262 auth->connector);
1263 }
1264 if (auth->c_sign_key) {
1265 char *hex;
1266 size_t hexlen;
1267
1268 hexlen = 2 * wpabuf_len(auth->c_sign_key) + 1;
1269 hex = os_malloc(hexlen);
1270 if (hex) {
1271 wpa_snprintf_hex(hex, hexlen,
1272 wpabuf_head(auth->c_sign_key),
1273 wpabuf_len(auth->c_sign_key));
1274 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_C_SIGN_KEY "%s",
1275 hex);
1276 os_free(hex);
1277 }
1278 }
1279 if (auth->net_access_key) {
1280 char *hex;
1281 size_t hexlen;
1282
1283 hexlen = 2 * wpabuf_len(auth->net_access_key) + 1;
1284 hex = os_malloc(hexlen);
1285 if (hex) {
1286 wpa_snprintf_hex(hex, hexlen,
1287 wpabuf_head(auth->net_access_key),
1288 wpabuf_len(auth->net_access_key));
1289 if (auth->net_access_key_expiry)
1290 wpa_msg(wpa_s, MSG_INFO,
1291 DPP_EVENT_NET_ACCESS_KEY "%s %lu", hex,
1292 (long unsigned)
1293 auth->net_access_key_expiry);
1294 else
1295 wpa_msg(wpa_s, MSG_INFO,
1296 DPP_EVENT_NET_ACCESS_KEY "%s", hex);
1297 os_free(hex);
1298 }
1299 }
1300
1301 wpas_dpp_process_config(wpa_s, auth);
1302 }
1303
1304
1305 static void wpas_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
1306 enum gas_query_result result,
1307 const struct wpabuf *adv_proto,
1308 const struct wpabuf *resp, u16 status_code)
1309 {
1310 struct wpa_supplicant *wpa_s = ctx;
1311 const u8 *pos;
1312 struct dpp_authentication *auth = wpa_s->dpp_auth;
1313
1314 if (!auth || !auth->auth_success) {
1315 wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
1316 return;
1317 }
1318 if (!resp || status_code != WLAN_STATUS_SUCCESS) {
1319 wpa_printf(MSG_DEBUG, "DPP: GAS query did not succeed");
1320 goto fail;
1321 }
1322
1323 wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response adv_proto",
1324 adv_proto);
1325 wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response (GAS response)",
1326 resp);
1327
1328 if (wpabuf_len(adv_proto) != 10 ||
1329 !(pos = wpabuf_head(adv_proto)) ||
1330 pos[0] != WLAN_EID_ADV_PROTO ||
1331 pos[1] != 8 ||
1332 pos[3] != WLAN_EID_VENDOR_SPECIFIC ||
1333 pos[4] != 5 ||
1334 WPA_GET_BE24(&pos[5]) != OUI_WFA ||
1335 pos[8] != 0x1a ||
1336 pos[9] != 1) {
1337 wpa_printf(MSG_DEBUG,
1338 "DPP: Not a DPP Advertisement Protocol ID");
1339 goto fail;
1340 }
1341
1342 if (dpp_conf_resp_rx(auth, resp) < 0) {
1343 wpa_printf(MSG_DEBUG, "DPP: Configuration attempt failed");
1344 goto fail;
1345 }
1346
1347 wpas_dpp_handle_config_obj(wpa_s, auth);
1348 dpp_auth_deinit(wpa_s->dpp_auth);
1349 wpa_s->dpp_auth = NULL;
1350 return;
1351
1352 fail:
1353 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
1354 dpp_auth_deinit(wpa_s->dpp_auth);
1355 wpa_s->dpp_auth = NULL;
1356 }
1357
1358
1359 static void wpas_dpp_start_gas_client(struct wpa_supplicant *wpa_s)
1360 {
1361 struct dpp_authentication *auth = wpa_s->dpp_auth;
1362 struct wpabuf *buf, *conf_req;
1363 char json[100];
1364 int res;
1365
1366 wpa_s->dpp_gas_client = 1;
1367 os_snprintf(json, sizeof(json),
1368 "{\"name\":\"Test\","
1369 "\"wi-fi_tech\":\"infra\","
1370 "\"netRole\":\"%s\"}",
1371 wpa_s->dpp_netrole_ap ? "ap" : "sta");
1372 #ifdef CONFIG_TESTING_OPTIONS
1373 if (dpp_test == DPP_TEST_INVALID_CONFIG_ATTR_OBJ_CONF_REQ) {
1374 wpa_printf(MSG_INFO, "DPP: TESTING - invalid Config Attr");
1375 json[29] = 'k'; /* replace "infra" with "knfra" */
1376 }
1377 #endif /* CONFIG_TESTING_OPTIONS */
1378 wpa_printf(MSG_DEBUG, "DPP: GAS Config Attributes: %s", json);
1379
1380 offchannel_send_action_done(wpa_s);
1381 wpas_dpp_listen_stop(wpa_s);
1382
1383 conf_req = dpp_build_conf_req(auth, json);
1384 if (!conf_req) {
1385 wpa_printf(MSG_DEBUG,
1386 "DPP: No configuration request data available");
1387 return;
1388 }
1389
1390 buf = gas_build_initial_req(0, 10 + 2 + wpabuf_len(conf_req));
1391 if (!buf) {
1392 wpabuf_free(conf_req);
1393 return;
1394 }
1395
1396 /* Advertisement Protocol IE */
1397 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
1398 wpabuf_put_u8(buf, 8); /* Length */
1399 wpabuf_put_u8(buf, 0x7f);
1400 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
1401 wpabuf_put_u8(buf, 5);
1402 wpabuf_put_be24(buf, OUI_WFA);
1403 wpabuf_put_u8(buf, DPP_OUI_TYPE);
1404 wpabuf_put_u8(buf, 0x01);
1405
1406 /* GAS Query */
1407 wpabuf_put_le16(buf, wpabuf_len(conf_req));
1408 wpabuf_put_buf(buf, conf_req);
1409 wpabuf_free(conf_req);
1410
1411 wpa_printf(MSG_DEBUG, "DPP: GAS request to " MACSTR " (freq %u MHz)",
1412 MAC2STR(auth->peer_mac_addr), auth->curr_freq);
1413
1414 res = gas_query_req(wpa_s->gas, auth->peer_mac_addr, auth->curr_freq,
1415 buf, wpas_dpp_gas_resp_cb, wpa_s);
1416 if (res < 0) {
1417 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
1418 wpabuf_free(buf);
1419 } else {
1420 wpa_printf(MSG_DEBUG,
1421 "DPP: GAS query started with dialog token %u", res);
1422 }
1423 }
1424
1425
1426 static void wpas_dpp_auth_success(struct wpa_supplicant *wpa_s, int initiator)
1427 {
1428 wpa_printf(MSG_DEBUG, "DPP: Authentication succeeded");
1429 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_SUCCESS "init=%d", initiator);
1430
1431 if (wpa_s->dpp_auth->configurator)
1432 wpas_dpp_start_gas_server(wpa_s);
1433 else
1434 wpas_dpp_start_gas_client(wpa_s);
1435 }
1436
1437
1438 static void wpas_dpp_rx_auth_resp(struct wpa_supplicant *wpa_s, const u8 *src,
1439 const u8 *hdr, const u8 *buf, size_t len,
1440 unsigned int freq)
1441 {
1442 struct dpp_authentication *auth = wpa_s->dpp_auth;
1443 struct wpabuf *msg;
1444
1445 wpa_printf(MSG_DEBUG, "DPP: Authentication Response from " MACSTR
1446 " (freq %u MHz)", MAC2STR(src), freq);
1447
1448 if (!auth) {
1449 wpa_printf(MSG_DEBUG,
1450 "DPP: No DPP Authentication in progress - drop");
1451 return;
1452 }
1453
1454 if (!is_zero_ether_addr(auth->peer_mac_addr) &&
1455 os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
1456 wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
1457 MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
1458 return;
1459 }
1460
1461 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
1462
1463 if (auth->curr_freq != freq && auth->neg_freq == freq) {
1464 wpa_printf(MSG_DEBUG,
1465 "DPP: Responder accepted request for different negotiation channel");
1466 auth->curr_freq = freq;
1467 }
1468
1469 eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
1470 msg = dpp_auth_resp_rx(auth, hdr, buf, len);
1471 if (!msg) {
1472 if (auth->auth_resp_status == DPP_STATUS_RESPONSE_PENDING) {
1473 wpa_printf(MSG_DEBUG,
1474 "DPP: Start wait for full response");
1475 offchannel_send_action_done(wpa_s);
1476 wpas_dpp_listen_start(wpa_s, auth->curr_freq);
1477 return;
1478 }
1479 wpa_printf(MSG_DEBUG, "DPP: No confirm generated");
1480 return;
1481 }
1482 os_memcpy(auth->peer_mac_addr, src, ETH_ALEN);
1483
1484 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1485 MAC2STR(src), auth->curr_freq, DPP_PA_AUTHENTICATION_CONF);
1486 offchannel_send_action(wpa_s, auth->curr_freq,
1487 src, wpa_s->own_addr, broadcast,
1488 wpabuf_head(msg), wpabuf_len(msg),
1489 500, wpas_dpp_tx_status, 0);
1490 wpabuf_free(msg);
1491 wpa_s->dpp_auth_ok_on_ack = 1;
1492 }
1493
1494
1495 static void wpas_dpp_rx_auth_conf(struct wpa_supplicant *wpa_s, const u8 *src,
1496 const u8 *hdr, const u8 *buf, size_t len)
1497 {
1498 struct dpp_authentication *auth = wpa_s->dpp_auth;
1499
1500 wpa_printf(MSG_DEBUG, "DPP: Authentication Confirmation from " MACSTR,
1501 MAC2STR(src));
1502
1503 if (!auth) {
1504 wpa_printf(MSG_DEBUG,
1505 "DPP: No DPP Authentication in progress - drop");
1506 return;
1507 }
1508
1509 if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
1510 wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
1511 MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
1512 return;
1513 }
1514
1515 if (dpp_auth_conf_rx(auth, hdr, buf, len) < 0) {
1516 wpa_printf(MSG_DEBUG, "DPP: Authentication failed");
1517 return;
1518 }
1519
1520 wpas_dpp_auth_success(wpa_s, 0);
1521 }
1522
1523
1524 static void wpas_dpp_rx_peer_disc_resp(struct wpa_supplicant *wpa_s,
1525 const u8 *src,
1526 const u8 *buf, size_t len)
1527 {
1528 struct wpa_ssid *ssid;
1529 const u8 *connector, *trans_id, *status;
1530 u16 connector_len, trans_id_len, status_len;
1531 struct dpp_introduction intro;
1532 struct rsn_pmksa_cache_entry *entry;
1533 struct os_time now;
1534 struct os_reltime rnow;
1535 os_time_t expiry;
1536 unsigned int seconds;
1537 enum dpp_status_error res;
1538
1539 wpa_printf(MSG_DEBUG, "DPP: Peer Discovery Response from " MACSTR,
1540 MAC2STR(src));
1541 if (is_zero_ether_addr(wpa_s->dpp_intro_bssid) ||
1542 os_memcmp(src, wpa_s->dpp_intro_bssid, ETH_ALEN) != 0) {
1543 wpa_printf(MSG_DEBUG, "DPP: Not waiting for response from "
1544 MACSTR " - drop", MAC2STR(src));
1545 return;
1546 }
1547 offchannel_send_action_done(wpa_s);
1548
1549 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1550 if (ssid == wpa_s->dpp_intro_network)
1551 break;
1552 }
1553 if (!ssid || !ssid->dpp_connector || !ssid->dpp_netaccesskey ||
1554 !ssid->dpp_csign) {
1555 wpa_printf(MSG_DEBUG,
1556 "DPP: Profile not found for network introduction");
1557 return;
1558 }
1559
1560 trans_id = dpp_get_attr(buf, len, DPP_ATTR_TRANSACTION_ID,
1561 &trans_id_len);
1562 if (!trans_id || trans_id_len != 1) {
1563 wpa_printf(MSG_DEBUG,
1564 "DPP: Peer did not include Transaction ID");
1565 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1566 " fail=missing_transaction_id", MAC2STR(src));
1567 goto fail;
1568 }
1569 if (trans_id[0] != TRANSACTION_ID) {
1570 wpa_printf(MSG_DEBUG,
1571 "DPP: Ignore frame with unexpected Transaction ID %u",
1572 trans_id[0]);
1573 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1574 " fail=transaction_id_mismatch", MAC2STR(src));
1575 goto fail;
1576 }
1577
1578 status = dpp_get_attr(buf, len, DPP_ATTR_STATUS, &status_len);
1579 if (!status || status_len != 1) {
1580 wpa_printf(MSG_DEBUG, "DPP: Peer did not include Status");
1581 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1582 " fail=missing_status", MAC2STR(src));
1583 goto fail;
1584 }
1585 if (status[0] != DPP_STATUS_OK) {
1586 wpa_printf(MSG_DEBUG,
1587 "DPP: Peer rejected network introduction: Status %u",
1588 status[0]);
1589 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1590 " status=%u", MAC2STR(src), status[0]);
1591 goto fail;
1592 }
1593
1594 connector = dpp_get_attr(buf, len, DPP_ATTR_CONNECTOR, &connector_len);
1595 if (!connector) {
1596 wpa_printf(MSG_DEBUG,
1597 "DPP: Peer did not include its Connector");
1598 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1599 " fail=missing_connector", MAC2STR(src));
1600 goto fail;
1601 }
1602
1603 res = dpp_peer_intro(&intro, ssid->dpp_connector,
1604 ssid->dpp_netaccesskey,
1605 ssid->dpp_netaccesskey_len,
1606 ssid->dpp_csign,
1607 ssid->dpp_csign_len,
1608 connector, connector_len, &expiry);
1609 if (res != DPP_STATUS_OK) {
1610 wpa_printf(MSG_INFO,
1611 "DPP: Network Introduction protocol resulted in failure");
1612 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1613 " fail=peer_connector_validation_failed", MAC2STR(src));
1614 goto fail;
1615 }
1616
1617 entry = os_zalloc(sizeof(*entry));
1618 if (!entry)
1619 goto fail;
1620 os_memcpy(entry->aa, src, ETH_ALEN);
1621 os_memcpy(entry->pmkid, intro.pmkid, PMKID_LEN);
1622 os_memcpy(entry->pmk, intro.pmk, intro.pmk_len);
1623 entry->pmk_len = intro.pmk_len;
1624 entry->akmp = WPA_KEY_MGMT_DPP;
1625 if (expiry) {
1626 os_get_time(&now);
1627 seconds = expiry - now.sec;
1628 } else {
1629 seconds = 86400 * 7;
1630 }
1631 os_get_reltime(&rnow);
1632 entry->expiration = rnow.sec + seconds;
1633 entry->reauth_time = rnow.sec + seconds;
1634 entry->network_ctx = ssid;
1635 wpa_sm_pmksa_cache_add_entry(wpa_s->wpa, entry);
1636
1637 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
1638 " status=%u", MAC2STR(src), status[0]);
1639
1640 wpa_printf(MSG_DEBUG,
1641 "DPP: Try connection again after successful network introduction");
1642 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
1643 wpa_supplicant_cancel_sched_scan(wpa_s);
1644 wpa_supplicant_req_scan(wpa_s, 0, 0);
1645 }
1646 fail:
1647 os_memset(&intro, 0, sizeof(intro));
1648 }
1649
1650
1651 static void wpas_dpp_pkex_retry_timeout(void *eloop_ctx, void *timeout_ctx)
1652 {
1653 struct wpa_supplicant *wpa_s = eloop_ctx;
1654 struct dpp_pkex *pkex = wpa_s->dpp_pkex;
1655
1656 if (!pkex || !pkex->exchange_req)
1657 return;
1658 if (pkex->exch_req_tries >= 5) {
1659 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
1660 "No response from PKEX peer");
1661 dpp_pkex_free(pkex);
1662 wpa_s->dpp_pkex = NULL;
1663 return;
1664 }
1665
1666 pkex->exch_req_tries++;
1667 wpa_printf(MSG_DEBUG, "DPP: Retransmit PKEX Exchange Request (try %u)",
1668 pkex->exch_req_tries);
1669 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1670 MAC2STR(broadcast), pkex->freq, DPP_PA_PKEX_EXCHANGE_REQ);
1671 offchannel_send_action(wpa_s, pkex->freq, broadcast,
1672 wpa_s->own_addr, broadcast,
1673 wpabuf_head(pkex->exchange_req),
1674 wpabuf_len(pkex->exchange_req),
1675 pkex->exch_req_wait_time,
1676 wpas_dpp_tx_pkex_status, 0);
1677 }
1678
1679
1680 static void
1681 wpas_dpp_tx_pkex_status(struct wpa_supplicant *wpa_s,
1682 unsigned int freq, const u8 *dst,
1683 const u8 *src, const u8 *bssid,
1684 const u8 *data, size_t data_len,
1685 enum offchannel_send_action_result result)
1686 {
1687 const char *res_txt;
1688 struct dpp_pkex *pkex = wpa_s->dpp_pkex;
1689
1690 res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
1691 (result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
1692 "FAILED");
1693 wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
1694 " result=%s (PKEX)",
1695 freq, MAC2STR(dst), res_txt);
1696 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
1697 " freq=%u result=%s", MAC2STR(dst), freq, res_txt);
1698
1699 if (!pkex) {
1700 wpa_printf(MSG_DEBUG,
1701 "DPP: Ignore TX status since there is no ongoing PKEX exchange");
1702 return;
1703 }
1704
1705 if (pkex->failed) {
1706 wpa_printf(MSG_DEBUG,
1707 "DPP: Terminate PKEX exchange due to an earlier error");
1708 if (pkex->t > pkex->own_bi->pkex_t)
1709 pkex->own_bi->pkex_t = pkex->t;
1710 dpp_pkex_free(pkex);
1711 wpa_s->dpp_pkex = NULL;
1712 return;
1713 }
1714
1715 if (pkex->exch_req_wait_time && pkex->exchange_req) {
1716 /* Wait for PKEX Exchange Response frame and retry request if
1717 * no response is seen. */
1718 eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
1719 eloop_register_timeout(pkex->exch_req_wait_time / 1000,
1720 (pkex->exch_req_wait_time % 1000) * 1000,
1721 wpas_dpp_pkex_retry_timeout, wpa_s,
1722 NULL);
1723 }
1724 }
1725
1726
1727 static void
1728 wpas_dpp_rx_pkex_exchange_req(struct wpa_supplicant *wpa_s, const u8 *src,
1729 const u8 *buf, size_t len, unsigned int freq)
1730 {
1731 struct wpabuf *msg;
1732 unsigned int wait_time;
1733
1734 wpa_printf(MSG_DEBUG, "DPP: PKEX Exchange Request from " MACSTR,
1735 MAC2STR(src));
1736
1737 /* TODO: Support multiple PKEX codes by iterating over all the enabled
1738 * values here */
1739
1740 if (!wpa_s->dpp_pkex_code || !wpa_s->dpp_pkex_bi) {
1741 wpa_printf(MSG_DEBUG,
1742 "DPP: No PKEX code configured - ignore request");
1743 return;
1744 }
1745
1746 if (wpa_s->dpp_pkex) {
1747 /* TODO: Support parallel operations */
1748 wpa_printf(MSG_DEBUG,
1749 "DPP: Already in PKEX session - ignore new request");
1750 return;
1751 }
1752
1753 wpa_s->dpp_pkex = dpp_pkex_rx_exchange_req(wpa_s, wpa_s->dpp_pkex_bi,
1754 wpa_s->own_addr, src,
1755 wpa_s->dpp_pkex_identifier,
1756 wpa_s->dpp_pkex_code,
1757 buf, len);
1758 if (!wpa_s->dpp_pkex) {
1759 wpa_printf(MSG_DEBUG,
1760 "DPP: Failed to process the request - ignore it");
1761 return;
1762 }
1763
1764 msg = wpa_s->dpp_pkex->exchange_resp;
1765 wait_time = wpa_s->max_remain_on_chan;
1766 if (wait_time > 2000)
1767 wait_time = 2000;
1768 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1769 MAC2STR(src), freq, DPP_PA_PKEX_EXCHANGE_RESP);
1770 offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
1771 broadcast,
1772 wpabuf_head(msg), wpabuf_len(msg),
1773 wait_time, wpas_dpp_tx_pkex_status, 0);
1774 }
1775
1776
1777 static void
1778 wpas_dpp_rx_pkex_exchange_resp(struct wpa_supplicant *wpa_s, const u8 *src,
1779 const u8 *buf, size_t len, unsigned int freq)
1780 {
1781 struct wpabuf *msg;
1782 unsigned int wait_time;
1783
1784 wpa_printf(MSG_DEBUG, "DPP: PKEX Exchange Response from " MACSTR,
1785 MAC2STR(src));
1786
1787 /* TODO: Support multiple PKEX codes by iterating over all the enabled
1788 * values here */
1789
1790 if (!wpa_s->dpp_pkex || !wpa_s->dpp_pkex->initiator ||
1791 wpa_s->dpp_pkex->exchange_done) {
1792 wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
1793 return;
1794 }
1795
1796 eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
1797 wpa_s->dpp_pkex->exch_req_wait_time = 0;
1798
1799 os_memcpy(wpa_s->dpp_pkex->peer_mac, src, ETH_ALEN);
1800 msg = dpp_pkex_rx_exchange_resp(wpa_s->dpp_pkex, buf, len);
1801 if (!msg) {
1802 wpa_printf(MSG_DEBUG, "DPP: Failed to process the response");
1803 return;
1804 }
1805
1806 wpa_printf(MSG_DEBUG, "DPP: Send PKEX Commit-Reveal Request to " MACSTR,
1807 MAC2STR(src));
1808
1809 wait_time = wpa_s->max_remain_on_chan;
1810 if (wait_time > 2000)
1811 wait_time = 2000;
1812 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1813 MAC2STR(src), freq, DPP_PA_PKEX_COMMIT_REVEAL_REQ);
1814 offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
1815 broadcast,
1816 wpabuf_head(msg), wpabuf_len(msg),
1817 wait_time, wpas_dpp_tx_pkex_status, 0);
1818 wpabuf_free(msg);
1819 }
1820
1821
1822 static struct dpp_bootstrap_info *
1823 wpas_dpp_pkex_finish(struct wpa_supplicant *wpa_s, const u8 *peer,
1824 unsigned int freq)
1825 {
1826 struct dpp_pkex *pkex = wpa_s->dpp_pkex;
1827 struct dpp_bootstrap_info *bi;
1828
1829 bi = os_zalloc(sizeof(*bi));
1830 if (!bi)
1831 return NULL;
1832 bi->id = wpas_dpp_next_id(wpa_s);
1833 bi->type = DPP_BOOTSTRAP_PKEX;
1834 os_memcpy(bi->mac_addr, peer, ETH_ALEN);
1835 bi->num_freq = 1;
1836 bi->freq[0] = freq;
1837 bi->curve = pkex->own_bi->curve;
1838 bi->pubkey = pkex->peer_bootstrap_key;
1839 pkex->peer_bootstrap_key = NULL;
1840 dpp_pkex_free(pkex);
1841 wpa_s->dpp_pkex = NULL;
1842 if (dpp_bootstrap_key_hash(bi) < 0) {
1843 dpp_bootstrap_info_free(bi);
1844 return NULL;
1845 }
1846 dl_list_add(&wpa_s->dpp_bootstrap, &bi->list);
1847 return bi;
1848 }
1849
1850
1851 static void
1852 wpas_dpp_rx_pkex_commit_reveal_req(struct wpa_supplicant *wpa_s, const u8 *src,
1853 const u8 *hdr, const u8 *buf, size_t len,
1854 unsigned int freq)
1855 {
1856 struct wpabuf *msg;
1857 unsigned int wait_time;
1858 struct dpp_pkex *pkex = wpa_s->dpp_pkex;
1859
1860 wpa_printf(MSG_DEBUG, "DPP: PKEX Commit-Reveal Request from " MACSTR,
1861 MAC2STR(src));
1862
1863 if (!pkex || pkex->initiator || !pkex->exchange_done) {
1864 wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
1865 return;
1866 }
1867
1868 msg = dpp_pkex_rx_commit_reveal_req(pkex, hdr, buf, len);
1869 if (!msg) {
1870 wpa_printf(MSG_DEBUG, "DPP: Failed to process the request");
1871 if (pkex->failed) {
1872 wpa_printf(MSG_DEBUG, "DPP: Terminate PKEX exchange");
1873 if (pkex->t > pkex->own_bi->pkex_t)
1874 pkex->own_bi->pkex_t = pkex->t;
1875 dpp_pkex_free(wpa_s->dpp_pkex);
1876 wpa_s->dpp_pkex = NULL;
1877 }
1878 return;
1879 }
1880
1881 wpa_printf(MSG_DEBUG, "DPP: Send PKEX Commit-Reveal Response to "
1882 MACSTR, MAC2STR(src));
1883
1884 wait_time = wpa_s->max_remain_on_chan;
1885 if (wait_time > 2000)
1886 wait_time = 2000;
1887 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
1888 MAC2STR(src), freq, DPP_PA_PKEX_COMMIT_REVEAL_RESP);
1889 offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
1890 broadcast,
1891 wpabuf_head(msg), wpabuf_len(msg),
1892 wait_time, wpas_dpp_tx_pkex_status, 0);
1893 wpabuf_free(msg);
1894
1895 wpas_dpp_pkex_finish(wpa_s, src, freq);
1896 }
1897
1898
1899 static void
1900 wpas_dpp_rx_pkex_commit_reveal_resp(struct wpa_supplicant *wpa_s, const u8 *src,
1901 const u8 *hdr, const u8 *buf, size_t len,
1902 unsigned int freq)
1903 {
1904 int res;
1905 struct dpp_bootstrap_info *bi;
1906 struct dpp_pkex *pkex = wpa_s->dpp_pkex;
1907 char cmd[500];
1908
1909 wpa_printf(MSG_DEBUG, "DPP: PKEX Commit-Reveal Response from " MACSTR,
1910 MAC2STR(src));
1911
1912 if (!pkex || !pkex->initiator || !pkex->exchange_done) {
1913 wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
1914 return;
1915 }
1916
1917 res = dpp_pkex_rx_commit_reveal_resp(pkex, hdr, buf, len);
1918 if (res < 0) {
1919 wpa_printf(MSG_DEBUG, "DPP: Failed to process the response");
1920 return;
1921 }
1922
1923 bi = wpas_dpp_pkex_finish(wpa_s, src, freq);
1924 if (!bi)
1925 return;
1926
1927 os_snprintf(cmd, sizeof(cmd), " peer=%u %s",
1928 bi->id,
1929 wpa_s->dpp_pkex_auth_cmd ? wpa_s->dpp_pkex_auth_cmd : "");
1930 wpa_printf(MSG_DEBUG,
1931 "DPP: Start authentication after PKEX with parameters: %s",
1932 cmd);
1933 if (wpas_dpp_auth_init(wpa_s, cmd) < 0) {
1934 wpa_printf(MSG_DEBUG,
1935 "DPP: Authentication initialization failed");
1936 return;
1937 }
1938 }
1939
1940
1941 void wpas_dpp_rx_action(struct wpa_supplicant *wpa_s, const u8 *src,
1942 const u8 *buf, size_t len, unsigned int freq)
1943 {
1944 u8 crypto_suite;
1945 enum dpp_public_action_frame_type type;
1946 const u8 *hdr;
1947 unsigned int pkex_t;
1948
1949 if (len < DPP_HDR_LEN)
1950 return;
1951 if (WPA_GET_BE24(buf) != OUI_WFA || buf[3] != DPP_OUI_TYPE)
1952 return;
1953 hdr = buf;
1954 buf += 4;
1955 len -= 4;
1956 crypto_suite = *buf++;
1957 type = *buf++;
1958 len -= 2;
1959
1960 wpa_printf(MSG_DEBUG,
1961 "DPP: Received DPP Public Action frame crypto suite %u type %d from "
1962 MACSTR " freq=%u",
1963 crypto_suite, type, MAC2STR(src), freq);
1964 if (crypto_suite != 1) {
1965 wpa_printf(MSG_DEBUG, "DPP: Unsupported crypto suite %u",
1966 crypto_suite);
1967 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR
1968 " freq=%u type=%d ignore=unsupported-crypto-suite",
1969 MAC2STR(src), freq, type);
1970 return;
1971 }
1972 wpa_hexdump(MSG_MSGDUMP, "DPP: Received message attributes", buf, len);
1973 if (dpp_check_attrs(buf, len) < 0) {
1974 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR
1975 " freq=%u type=%d ignore=invalid-attributes",
1976 MAC2STR(src), freq, type);
1977 return;
1978 }
1979 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR " freq=%u type=%d",
1980 MAC2STR(src), freq, type);
1981
1982 switch (type) {
1983 case DPP_PA_AUTHENTICATION_REQ:
1984 wpas_dpp_rx_auth_req(wpa_s, src, hdr, buf, len, freq);
1985 break;
1986 case DPP_PA_AUTHENTICATION_RESP:
1987 wpas_dpp_rx_auth_resp(wpa_s, src, hdr, buf, len, freq);
1988 break;
1989 case DPP_PA_AUTHENTICATION_CONF:
1990 wpas_dpp_rx_auth_conf(wpa_s, src, hdr, buf, len);
1991 break;
1992 case DPP_PA_PEER_DISCOVERY_RESP:
1993 wpas_dpp_rx_peer_disc_resp(wpa_s, src, buf, len);
1994 break;
1995 case DPP_PA_PKEX_EXCHANGE_REQ:
1996 wpas_dpp_rx_pkex_exchange_req(wpa_s, src, buf, len, freq);
1997 break;
1998 case DPP_PA_PKEX_EXCHANGE_RESP:
1999 wpas_dpp_rx_pkex_exchange_resp(wpa_s, src, buf, len, freq);
2000 break;
2001 case DPP_PA_PKEX_COMMIT_REVEAL_REQ:
2002 wpas_dpp_rx_pkex_commit_reveal_req(wpa_s, src, hdr, buf, len,
2003 freq);
2004 break;
2005 case DPP_PA_PKEX_COMMIT_REVEAL_RESP:
2006 wpas_dpp_rx_pkex_commit_reveal_resp(wpa_s, src, hdr, buf, len,
2007 freq);
2008 break;
2009 default:
2010 wpa_printf(MSG_DEBUG,
2011 "DPP: Ignored unsupported frame subtype %d", type);
2012 break;
2013 }
2014
2015 if (wpa_s->dpp_pkex)
2016 pkex_t = wpa_s->dpp_pkex->t;
2017 else if (wpa_s->dpp_pkex_bi)
2018 pkex_t = wpa_s->dpp_pkex_bi->pkex_t;
2019 else
2020 pkex_t = 0;
2021 if (pkex_t >= PKEX_COUNTER_T_LIMIT) {
2022 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_PKEX_T_LIMIT "id=0");
2023 wpas_dpp_pkex_remove(wpa_s, "*");
2024 }
2025 }
2026
2027
2028 static struct wpabuf *
2029 wpas_dpp_gas_req_handler(void *ctx, const u8 *sa, const u8 *query,
2030 size_t query_len)
2031 {
2032 struct wpa_supplicant *wpa_s = ctx;
2033 struct dpp_authentication *auth = wpa_s->dpp_auth;
2034 struct wpabuf *resp;
2035
2036 wpa_printf(MSG_DEBUG, "DPP: GAS request from " MACSTR,
2037 MAC2STR(sa));
2038 if (!auth || !auth->auth_success ||
2039 os_memcmp(sa, auth->peer_mac_addr, ETH_ALEN) != 0) {
2040 wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
2041 return NULL;
2042 }
2043 wpa_hexdump(MSG_DEBUG,
2044 "DPP: Received Configuration Request (GAS Query Request)",
2045 query, query_len);
2046 resp = dpp_conf_req_rx(auth, query, query_len);
2047 if (!resp)
2048 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
2049 return resp;
2050 }
2051
2052
2053 static void
2054 wpas_dpp_gas_status_handler(void *ctx, struct wpabuf *resp, int ok)
2055 {
2056 struct wpa_supplicant *wpa_s = ctx;
2057 struct dpp_authentication *auth = wpa_s->dpp_auth;
2058
2059 if (!auth) {
2060 wpabuf_free(resp);
2061 return;
2062 }
2063
2064 wpa_printf(MSG_DEBUG, "DPP: Configuration exchange completed (ok=%d)",
2065 ok);
2066 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
2067 eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
2068 offchannel_send_action_done(wpa_s);
2069 wpas_dpp_listen_stop(wpa_s);
2070 if (ok)
2071 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_SENT);
2072 else
2073 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
2074 dpp_auth_deinit(wpa_s->dpp_auth);
2075 wpa_s->dpp_auth = NULL;
2076 wpabuf_free(resp);
2077 }
2078
2079
2080 static unsigned int wpas_dpp_next_configurator_id(struct wpa_supplicant *wpa_s)
2081 {
2082 struct dpp_configurator *conf;
2083 unsigned int max_id = 0;
2084
2085 dl_list_for_each(conf, &wpa_s->dpp_configurator,
2086 struct dpp_configurator, list) {
2087 if (conf->id > max_id)
2088 max_id = conf->id;
2089 }
2090 return max_id + 1;
2091 }
2092
2093
2094 int wpas_dpp_configurator_add(struct wpa_supplicant *wpa_s, const char *cmd)
2095 {
2096 char *curve = NULL;
2097 char *key = NULL;
2098 u8 *privkey = NULL;
2099 size_t privkey_len = 0;
2100 int ret = -1;
2101 struct dpp_configurator *conf = NULL;
2102
2103 curve = get_param(cmd, " curve=");
2104 key = get_param(cmd, " key=");
2105
2106 if (key) {
2107 privkey_len = os_strlen(key) / 2;
2108 privkey = os_malloc(privkey_len);
2109 if (!privkey ||
2110 hexstr2bin(key, privkey, privkey_len) < 0)
2111 goto fail;
2112 }
2113
2114 conf = dpp_keygen_configurator(curve, privkey, privkey_len);
2115 if (!conf)
2116 goto fail;
2117
2118 conf->id = wpas_dpp_next_configurator_id(wpa_s);
2119 dl_list_add(&wpa_s->dpp_configurator, &conf->list);
2120 ret = conf->id;
2121 conf = NULL;
2122 fail:
2123 os_free(curve);
2124 str_clear_free(key);
2125 bin_clear_free(privkey, privkey_len);
2126 dpp_configurator_free(conf);
2127 return ret;
2128 }
2129
2130
2131 static int dpp_configurator_del(struct wpa_supplicant *wpa_s, unsigned int id)
2132 {
2133 struct dpp_configurator *conf, *tmp;
2134 int found = 0;
2135
2136 dl_list_for_each_safe(conf, tmp, &wpa_s->dpp_configurator,
2137 struct dpp_configurator, list) {
2138 if (id && conf->id != id)
2139 continue;
2140 found = 1;
2141 dl_list_del(&conf->list);
2142 dpp_configurator_free(conf);
2143 }
2144
2145 if (id == 0)
2146 return 0; /* flush succeeds regardless of entries found */
2147 return found ? 0 : -1;
2148 }
2149
2150
2151 int wpas_dpp_configurator_remove(struct wpa_supplicant *wpa_s, const char *id)
2152 {
2153 unsigned int id_val;
2154
2155 if (os_strcmp(id, "*") == 0) {
2156 id_val = 0;
2157 } else {
2158 id_val = atoi(id);
2159 if (id_val == 0)
2160 return -1;
2161 }
2162
2163 return dpp_configurator_del(wpa_s, id_val);
2164 }
2165
2166
2167 int wpas_dpp_configurator_sign(struct wpa_supplicant *wpa_s, const char *cmd)
2168 {
2169 struct dpp_authentication *auth;
2170 int ret = -1;
2171 char *curve = NULL;
2172
2173 auth = os_zalloc(sizeof(*auth));
2174 if (!auth)
2175 return -1;
2176
2177 curve = get_param(cmd, " curve=");
2178 wpas_dpp_set_configurator(wpa_s, auth, cmd);
2179
2180 if (dpp_configurator_own_config(auth, curve) == 0) {
2181 wpas_dpp_handle_config_obj(wpa_s, auth);
2182 ret = 0;
2183 }
2184
2185 dpp_auth_deinit(auth);
2186 os_free(curve);
2187
2188 return ret;
2189 }
2190
2191
2192 static void
2193 wpas_dpp_tx_introduction_status(struct wpa_supplicant *wpa_s,
2194 unsigned int freq, const u8 *dst,
2195 const u8 *src, const u8 *bssid,
2196 const u8 *data, size_t data_len,
2197 enum offchannel_send_action_result result)
2198 {
2199 const char *res_txt;
2200
2201 res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
2202 (result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
2203 "FAILED");
2204 wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
2205 " result=%s (DPP Peer Discovery Request)",
2206 freq, MAC2STR(dst), res_txt);
2207 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
2208 " freq=%u result=%s", MAC2STR(dst), freq, res_txt);
2209 /* TODO: Time out wait for response more quickly in error cases? */
2210 }
2211
2212
2213 int wpas_dpp_check_connect(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
2214 struct wpa_bss *bss)
2215 {
2216 struct os_time now;
2217 struct wpabuf *msg;
2218 unsigned int wait_time;
2219
2220 if (!(ssid->key_mgmt & WPA_KEY_MGMT_DPP) || !bss)
2221 return 0; /* Not using DPP AKM - continue */
2222 if (wpa_sm_pmksa_exists(wpa_s->wpa, bss->bssid, ssid))
2223 return 0; /* PMKSA exists for DPP AKM - continue */
2224
2225 if (!ssid->dpp_connector || !ssid->dpp_netaccesskey ||
2226 !ssid->dpp_csign) {
2227 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_MISSING_CONNECTOR
2228 "missing %s",
2229 !ssid->dpp_connector ? "Connector" :
2230 (!ssid->dpp_netaccesskey ? "netAccessKey" :
2231 "C-sign-key"));
2232 return -1;
2233 }
2234
2235 os_get_time(&now);
2236
2237 if (ssid->dpp_netaccesskey_expiry &&
2238 ssid->dpp_netaccesskey_expiry < now.sec) {
2239 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_MISSING_CONNECTOR
2240 "netAccessKey expired");
2241 return -1;
2242 }
2243
2244 wpa_printf(MSG_DEBUG,
2245 "DPP: Starting network introduction protocol to derive PMKSA for "
2246 MACSTR, MAC2STR(bss->bssid));
2247
2248 msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_REQ,
2249 5 + 4 + os_strlen(ssid->dpp_connector));
2250 if (!msg)
2251 return -1;
2252
2253 #ifdef CONFIG_TESTING_OPTIONS
2254 if (dpp_test == DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_REQ) {
2255 wpa_printf(MSG_INFO, "DPP: TESTING - no Transaction ID");
2256 goto skip_trans_id;
2257 }
2258 #endif /* CONFIG_TESTING_OPTIONS */
2259
2260 /* Transaction ID */
2261 wpabuf_put_le16(msg, DPP_ATTR_TRANSACTION_ID);
2262 wpabuf_put_le16(msg, 1);
2263 wpabuf_put_u8(msg, TRANSACTION_ID);
2264
2265 #ifdef CONFIG_TESTING_OPTIONS
2266 skip_trans_id:
2267 if (dpp_test == DPP_TEST_NO_CONNECTOR_PEER_DISC_REQ) {
2268 wpa_printf(MSG_INFO, "DPP: TESTING - no Connector");
2269 goto skip_connector;
2270 }
2271 if (dpp_test == DPP_TEST_INVALID_CONNECTOR_PEER_DISC_REQ) {
2272 char *connector;
2273
2274 wpa_printf(MSG_INFO, "DPP: TESTING - invalid Connector");
2275 connector = dpp_corrupt_connector_signature(
2276 ssid->dpp_connector);
2277 if (!connector) {
2278 wpabuf_free(msg);
2279 return -1;
2280 }
2281 wpabuf_put_le16(msg, DPP_ATTR_CONNECTOR);
2282 wpabuf_put_le16(msg, os_strlen(connector));
2283 wpabuf_put_str(msg, connector);
2284 os_free(connector);
2285 goto skip_connector;
2286 }
2287 #endif /* CONFIG_TESTING_OPTIONS */
2288
2289 /* DPP Connector */
2290 wpabuf_put_le16(msg, DPP_ATTR_CONNECTOR);
2291 wpabuf_put_le16(msg, os_strlen(ssid->dpp_connector));
2292 wpabuf_put_str(msg, ssid->dpp_connector);
2293
2294 #ifdef CONFIG_TESTING_OPTIONS
2295 skip_connector:
2296 #endif /* CONFIG_TESTING_OPTIONS */
2297
2298 /* TODO: Timeout on AP response */
2299 wait_time = wpa_s->max_remain_on_chan;
2300 if (wait_time > 2000)
2301 wait_time = 2000;
2302 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
2303 MAC2STR(bss->bssid), bss->freq, DPP_PA_PEER_DISCOVERY_REQ);
2304 offchannel_send_action(wpa_s, bss->freq, bss->bssid, wpa_s->own_addr,
2305 broadcast,
2306 wpabuf_head(msg), wpabuf_len(msg),
2307 wait_time, wpas_dpp_tx_introduction_status, 0);
2308 wpabuf_free(msg);
2309
2310 /* Request this connection attempt to terminate - new one will be
2311 * started when network introduction protocol completes */
2312 os_memcpy(wpa_s->dpp_intro_bssid, bss->bssid, ETH_ALEN);
2313 wpa_s->dpp_intro_network = ssid;
2314 return 1;
2315 }
2316
2317
2318 int wpas_dpp_pkex_add(struct wpa_supplicant *wpa_s, const char *cmd)
2319 {
2320 struct dpp_bootstrap_info *own_bi;
2321 const char *pos, *end;
2322 unsigned int wait_time;
2323
2324 pos = os_strstr(cmd, " own=");
2325 if (!pos)
2326 return -1;
2327 pos += 5;
2328 own_bi = dpp_bootstrap_get_id(wpa_s, atoi(pos));
2329 if (!own_bi) {
2330 wpa_printf(MSG_DEBUG,
2331 "DPP: Identified bootstrap info not found");
2332 return -1;
2333 }
2334 if (own_bi->type != DPP_BOOTSTRAP_PKEX) {
2335 wpa_printf(MSG_DEBUG,
2336 "DPP: Identified bootstrap info not for PKEX");
2337 return -1;
2338 }
2339 wpa_s->dpp_pkex_bi = own_bi;
2340 own_bi->pkex_t = 0; /* clear pending errors on new code */
2341
2342 os_free(wpa_s->dpp_pkex_identifier);
2343 wpa_s->dpp_pkex_identifier = NULL;
2344 pos = os_strstr(cmd, " identifier=");
2345 if (pos) {
2346 pos += 12;
2347 end = os_strchr(pos, ' ');
2348 if (!end)
2349 return -1;
2350 wpa_s->dpp_pkex_identifier = os_malloc(end - pos + 1);
2351 if (!wpa_s->dpp_pkex_identifier)
2352 return -1;
2353 os_memcpy(wpa_s->dpp_pkex_identifier, pos, end - pos);
2354 wpa_s->dpp_pkex_identifier[end - pos] = '\0';
2355 }
2356
2357 pos = os_strstr(cmd, " code=");
2358 if (!pos)
2359 return -1;
2360 os_free(wpa_s->dpp_pkex_code);
2361 wpa_s->dpp_pkex_code = os_strdup(pos + 6);
2362 if (!wpa_s->dpp_pkex_code)
2363 return -1;
2364
2365 if (os_strstr(cmd, " init=1")) {
2366 struct dpp_pkex *pkex;
2367 struct wpabuf *msg;
2368
2369 wpa_printf(MSG_DEBUG, "DPP: Initiating PKEX");
2370 dpp_pkex_free(wpa_s->dpp_pkex);
2371 wpa_s->dpp_pkex = dpp_pkex_init(wpa_s, own_bi, wpa_s->own_addr,
2372 wpa_s->dpp_pkex_identifier,
2373 wpa_s->dpp_pkex_code);
2374 pkex = wpa_s->dpp_pkex;
2375 if (!pkex)
2376 return -1;
2377
2378 msg = pkex->exchange_req;
2379 wait_time = wpa_s->max_remain_on_chan;
2380 if (wait_time > 2000)
2381 wait_time = 2000;
2382 /* TODO: Support for 5 GHz channels */
2383 pkex->freq = 2437;
2384 wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
2385 " freq=%u type=%d",
2386 MAC2STR(broadcast), pkex->freq,
2387 DPP_PA_PKEX_EXCHANGE_REQ);
2388 offchannel_send_action(wpa_s, pkex->freq, broadcast,
2389 wpa_s->own_addr, broadcast,
2390 wpabuf_head(msg), wpabuf_len(msg),
2391 wait_time, wpas_dpp_tx_pkex_status, 0);
2392 if (wait_time == 0)
2393 wait_time = 2000;
2394 pkex->exch_req_wait_time = wait_time;
2395 pkex->exch_req_tries = 1;
2396 }
2397
2398 /* TODO: Support multiple PKEX info entries */
2399
2400 os_free(wpa_s->dpp_pkex_auth_cmd);
2401 wpa_s->dpp_pkex_auth_cmd = os_strdup(cmd);
2402
2403 return 1;
2404 }
2405
2406
2407 int wpas_dpp_pkex_remove(struct wpa_supplicant *wpa_s, const char *id)
2408 {
2409 unsigned int id_val;
2410
2411 if (os_strcmp(id, "*") == 0) {
2412 id_val = 0;
2413 } else {
2414 id_val = atoi(id);
2415 if (id_val == 0)
2416 return -1;
2417 }
2418
2419 if ((id_val != 0 && id_val != 1) || !wpa_s->dpp_pkex_code)
2420 return -1;
2421
2422 /* TODO: Support multiple PKEX entries */
2423 os_free(wpa_s->dpp_pkex_code);
2424 wpa_s->dpp_pkex_code = NULL;
2425 os_free(wpa_s->dpp_pkex_identifier);
2426 wpa_s->dpp_pkex_identifier = NULL;
2427 os_free(wpa_s->dpp_pkex_auth_cmd);
2428 wpa_s->dpp_pkex_auth_cmd = NULL;
2429 wpa_s->dpp_pkex_bi = NULL;
2430 /* TODO: Remove dpp_pkex only if it is for the identified PKEX code */
2431 dpp_pkex_free(wpa_s->dpp_pkex);
2432 wpa_s->dpp_pkex = NULL;
2433 return 0;
2434 }
2435
2436
2437 void wpas_dpp_stop(struct wpa_supplicant *wpa_s)
2438 {
2439 dpp_auth_deinit(wpa_s->dpp_auth);
2440 wpa_s->dpp_auth = NULL;
2441 }
2442
2443
2444 int wpas_dpp_init(struct wpa_supplicant *wpa_s)
2445 {
2446 u8 adv_proto_id[7];
2447
2448 adv_proto_id[0] = WLAN_EID_VENDOR_SPECIFIC;
2449 adv_proto_id[1] = 5;
2450 WPA_PUT_BE24(&adv_proto_id[2], OUI_WFA);
2451 adv_proto_id[5] = DPP_OUI_TYPE;
2452 adv_proto_id[6] = 0x01;
2453
2454 if (gas_server_register(wpa_s->gas_server, adv_proto_id,
2455 sizeof(adv_proto_id), wpas_dpp_gas_req_handler,
2456 wpas_dpp_gas_status_handler, wpa_s) < 0)
2457 return -1;
2458 dl_list_init(&wpa_s->dpp_bootstrap);
2459 dl_list_init(&wpa_s->dpp_configurator);
2460 wpa_s->dpp_init_done = 1;
2461 return 0;
2462 }
2463
2464
2465 void wpas_dpp_deinit(struct wpa_supplicant *wpa_s)
2466 {
2467 #ifdef CONFIG_TESTING_OPTIONS
2468 os_free(wpa_s->dpp_config_obj_override);
2469 wpa_s->dpp_config_obj_override = NULL;
2470 os_free(wpa_s->dpp_discovery_override);
2471 wpa_s->dpp_discovery_override = NULL;
2472 os_free(wpa_s->dpp_groups_override);
2473 wpa_s->dpp_groups_override = NULL;
2474 wpa_s->dpp_ignore_netaccesskey_mismatch = 0;
2475 #endif /* CONFIG_TESTING_OPTIONS */
2476 if (!wpa_s->dpp_init_done)
2477 return;
2478 eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
2479 eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
2480 eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
2481 eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
2482 offchannel_send_action_done(wpa_s);
2483 wpas_dpp_listen_stop(wpa_s);
2484 dpp_bootstrap_del(wpa_s, 0);
2485 dpp_configurator_del(wpa_s, 0);
2486 dpp_auth_deinit(wpa_s->dpp_auth);
2487 wpa_s->dpp_auth = NULL;
2488 wpas_dpp_pkex_remove(wpa_s, "*");
2489 wpa_s->dpp_pkex = NULL;
2490 os_memset(wpa_s->dpp_intro_bssid, 0, ETH_ALEN);
2491 os_free(wpa_s->dpp_configurator_params);
2492 wpa_s->dpp_configurator_params = NULL;
2493 }
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