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