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[thirdparty/hostap.git] / wpa_supplicant / interworking.c
1 /*
2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/gas.h"
15 #include "common/wpa_ctrl.h"
16 #include "utils/pcsc_funcs.h"
17 #include "utils/eloop.h"
18 #include "drivers/driver.h"
19 #include "eap_common/eap_defs.h"
20 #include "eap_peer/eap.h"
21 #include "eap_peer/eap_methods.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wpa_supplicant_i.h"
25 #include "config.h"
26 #include "config_ssid.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "notify.h"
30 #include "driver_i.h"
31 #include "gas_query.h"
32 #include "hs20_supplicant.h"
33 #include "interworking.h"
34
35
36 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
37 #define INTERWORKING_3GPP
38 #else
39 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
40 #define INTERWORKING_3GPP
41 #else
42 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
43 #define INTERWORKING_3GPP
44 #endif
45 #endif
46 #endif
47
48 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
49 static struct wpa_cred * interworking_credentials_available_realm(
50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
51 int *excluded);
52 static struct wpa_cred * interworking_credentials_available_3gpp(
53 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
54 int *excluded);
55
56
57 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 {
59 if (a->priority > b->priority)
60 return 1;
61 if (a->priority < b->priority)
62 return -1;
63 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 return 0;
66 if (a->sp_priority < b->sp_priority)
67 return 1;
68 if (a->sp_priority > b->sp_priority)
69 return -1;
70 return 0;
71 }
72
73
74 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 {
76 unsigned int tried;
77
78 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
79 wpa_supplicant_cancel_sched_scan(wpa_s);
80 wpa_s->own_disconnect_req = 1;
81 wpa_supplicant_deauthenticate(wpa_s,
82 WLAN_REASON_DEAUTH_LEAVING);
83 }
84 wpa_s->disconnected = 0;
85 wpa_s->reassociate = 1;
86 tried = wpa_s->interworking_fast_assoc_tried;
87 wpa_s->interworking_fast_assoc_tried = 1;
88
89 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
90 return;
91
92 wpa_s->interworking_fast_assoc_tried = 0;
93 wpa_supplicant_req_scan(wpa_s, 0, 0);
94 }
95
96
97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
98 struct wpabuf *extra)
99 {
100 struct wpabuf *buf;
101 size_t i;
102 u8 *len_pos;
103
104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 (extra ? wpabuf_len(extra) : 0));
106 if (buf == NULL)
107 return NULL;
108
109 if (num_ids > 0) {
110 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
111 for (i = 0; i < num_ids; i++)
112 wpabuf_put_le16(buf, info_ids[i]);
113 gas_anqp_set_element_len(buf, len_pos);
114 }
115 if (extra)
116 wpabuf_put_buf(buf, extra);
117
118 gas_anqp_set_len(buf);
119
120 return buf;
121 }
122
123
124 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
125 u8 dialog_token,
126 enum gas_query_result result,
127 const struct wpabuf *adv_proto,
128 const struct wpabuf *resp,
129 u16 status_code)
130 {
131 struct wpa_supplicant *wpa_s = ctx;
132
133 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
134 " dialog_token=%u result=%d status_code=%u",
135 MAC2STR(dst), dialog_token, result, status_code);
136 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
137 status_code);
138 interworking_next_anqp_fetch(wpa_s);
139 }
140
141
142 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
143 {
144 struct wpa_cred *cred;
145
146 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
147 if (cred->roaming_consortium_len)
148 return 1;
149 if (cred->required_roaming_consortium_len)
150 return 1;
151 if (cred->num_roaming_consortiums)
152 return 1;
153 }
154 return 0;
155 }
156
157
158 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
159 {
160 struct wpa_cred *cred;
161
162 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
163 if (cred->pcsc || cred->imsi)
164 return 1;
165 }
166 return 0;
167 }
168
169
170 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
171 {
172 struct wpa_cred *cred;
173
174 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
175 if (cred->pcsc || cred->imsi)
176 continue;
177 if (!cred->eap_method)
178 return 1;
179 if (cred->realm)
180 return 1;
181 }
182 return 0;
183 }
184
185
186 static int cred_with_domain(struct wpa_supplicant *wpa_s)
187 {
188 struct wpa_cred *cred;
189
190 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
191 if (cred->domain || cred->pcsc || cred->imsi ||
192 cred->roaming_partner)
193 return 1;
194 }
195 return 0;
196 }
197
198
199 #ifdef CONFIG_HS20
200
201 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
202 {
203 struct wpa_cred *cred;
204
205 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
206 if (cred->min_dl_bandwidth_home ||
207 cred->min_ul_bandwidth_home ||
208 cred->min_dl_bandwidth_roaming ||
209 cred->min_ul_bandwidth_roaming)
210 return 1;
211 }
212 return 0;
213 }
214
215
216 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
217 {
218 struct wpa_cred *cred;
219
220 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
221 if (cred->num_req_conn_capab)
222 return 1;
223 }
224 return 0;
225 }
226
227 #endif /* CONFIG_HS20 */
228
229
230 static int additional_roaming_consortiums(struct wpa_bss *bss)
231 {
232 const u8 *ie;
233 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
234 if (ie == NULL || ie[1] == 0)
235 return 0;
236 return ie[2]; /* Number of ANQP OIs */
237 }
238
239
240 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
241 {
242 struct wpa_supplicant *wpa_s = eloop_ctx;
243 interworking_next_anqp_fetch(wpa_s);
244 }
245
246
247 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
248 struct wpa_bss *bss)
249 {
250 struct wpabuf *buf;
251 int ret = 0;
252 int res;
253 u16 info_ids[8];
254 size_t num_info_ids = 0;
255 struct wpabuf *extra = NULL;
256 int all = wpa_s->fetch_all_anqp;
257
258 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
259 MAC2STR(bss->bssid));
260 wpa_s->interworking_gas_bss = bss;
261
262 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
263 if (all) {
264 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
265 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
266 }
267 if (all || (cred_with_roaming_consortium(wpa_s) &&
268 additional_roaming_consortiums(bss)))
269 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
270 if (all)
271 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
272 if (all || cred_with_nai_realm(wpa_s))
273 info_ids[num_info_ids++] = ANQP_NAI_REALM;
274 if (all || cred_with_3gpp(wpa_s)) {
275 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
276 wpa_supplicant_scard_init(wpa_s, NULL);
277 }
278 if (all || cred_with_domain(wpa_s))
279 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
280 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
281 (u8 *) info_ids, num_info_ids * 2);
282
283 #ifdef CONFIG_HS20
284 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
285 u8 *len_pos;
286
287 extra = wpabuf_alloc(100);
288 if (!extra)
289 return -1;
290
291 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
292 wpabuf_put_be24(extra, OUI_WFA);
293 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
294 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
295 wpabuf_put_u8(extra, 0); /* Reserved */
296 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
297 if (all)
298 wpabuf_put_u8(extra,
299 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
300 if (all || cred_with_min_backhaul(wpa_s))
301 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
302 if (all || cred_with_conn_capab(wpa_s))
303 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
304 if (all)
305 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
306 if (all) {
307 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
308 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_NAI_LIST);
309 }
310 gas_anqp_set_element_len(extra, len_pos);
311 }
312 #endif /* CONFIG_HS20 */
313
314 buf = anqp_build_req(info_ids, num_info_ids, extra);
315 wpabuf_free(extra);
316 if (buf == NULL)
317 return -1;
318
319 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, 0, buf,
320 interworking_anqp_resp_cb, wpa_s);
321 if (res < 0) {
322 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
323 wpabuf_free(buf);
324 ret = -1;
325 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
326 NULL);
327 } else
328 wpa_msg(wpa_s, MSG_DEBUG,
329 "ANQP: Query started with dialog token %u", res);
330
331 return ret;
332 }
333
334
335 struct nai_realm_eap {
336 u8 method;
337 u8 inner_method;
338 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
339 u8 cred_type;
340 u8 tunneled_cred_type;
341 };
342
343 struct nai_realm {
344 u8 encoding;
345 char *realm;
346 u8 eap_count;
347 struct nai_realm_eap *eap;
348 };
349
350
351 static void nai_realm_free(struct nai_realm *realms, u16 count)
352 {
353 u16 i;
354
355 if (realms == NULL)
356 return;
357 for (i = 0; i < count; i++) {
358 os_free(realms[i].eap);
359 os_free(realms[i].realm);
360 }
361 os_free(realms);
362 }
363
364
365 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
366 const u8 *end)
367 {
368 u8 elen, auth_count, a;
369 const u8 *e_end;
370
371 if (end - pos < 3) {
372 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
373 return NULL;
374 }
375
376 elen = *pos++;
377 if (elen > end - pos || elen < 2) {
378 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
379 return NULL;
380 }
381 e_end = pos + elen;
382 e->method = *pos++;
383 auth_count = *pos++;
384 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
385 elen, e->method, auth_count);
386
387 for (a = 0; a < auth_count; a++) {
388 u8 id, len;
389
390 if (end - pos < 2) {
391 wpa_printf(MSG_DEBUG,
392 "No room for Authentication Parameter subfield header");
393 return NULL;
394 }
395
396 id = *pos++;
397 len = *pos++;
398 if (len > end - pos) {
399 wpa_printf(MSG_DEBUG,
400 "No room for Authentication Parameter subfield");
401 return NULL;
402 }
403
404 switch (id) {
405 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
406 if (len < 1)
407 break;
408 e->inner_non_eap = *pos;
409 if (e->method != EAP_TYPE_TTLS)
410 break;
411 switch (*pos) {
412 case NAI_REALM_INNER_NON_EAP_PAP:
413 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
414 break;
415 case NAI_REALM_INNER_NON_EAP_CHAP:
416 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
417 break;
418 case NAI_REALM_INNER_NON_EAP_MSCHAP:
419 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
420 break;
421 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
422 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
423 break;
424 }
425 break;
426 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
427 if (len < 1)
428 break;
429 e->inner_method = *pos;
430 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
431 e->inner_method);
432 break;
433 case NAI_REALM_EAP_AUTH_CRED_TYPE:
434 if (len < 1)
435 break;
436 e->cred_type = *pos;
437 wpa_printf(MSG_DEBUG, "Credential Type: %u",
438 e->cred_type);
439 break;
440 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
441 if (len < 1)
442 break;
443 e->tunneled_cred_type = *pos;
444 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
445 "Type: %u", e->tunneled_cred_type);
446 break;
447 default:
448 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
449 "Parameter: id=%u len=%u", id, len);
450 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
451 "Value", pos, len);
452 break;
453 }
454
455 pos += len;
456 }
457
458 return e_end;
459 }
460
461
462 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
463 const u8 *end)
464 {
465 u16 len;
466 const u8 *f_end;
467 u8 realm_len, e;
468
469 if (end - pos < 4) {
470 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
471 "fixed fields");
472 return NULL;
473 }
474
475 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
476 pos += 2;
477 if (len > end - pos || len < 3) {
478 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
479 "(len=%u; left=%u)",
480 len, (unsigned int) (end - pos));
481 return NULL;
482 }
483 f_end = pos + len;
484
485 r->encoding = *pos++;
486 realm_len = *pos++;
487 if (realm_len > f_end - pos) {
488 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
489 "(len=%u; left=%u)",
490 realm_len, (unsigned int) (f_end - pos));
491 return NULL;
492 }
493 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
494 r->realm = dup_binstr(pos, realm_len);
495 if (r->realm == NULL)
496 return NULL;
497 pos += realm_len;
498
499 if (f_end - pos < 1) {
500 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
501 return NULL;
502 }
503 r->eap_count = *pos++;
504 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
505 if (r->eap_count * 3 > f_end - pos) {
506 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
507 return NULL;
508 }
509 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
510 if (r->eap == NULL)
511 return NULL;
512
513 for (e = 0; e < r->eap_count; e++) {
514 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
515 if (pos == NULL)
516 return NULL;
517 }
518
519 return f_end;
520 }
521
522
523 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
524 {
525 struct nai_realm *realm;
526 const u8 *pos, *end;
527 u16 i, num;
528 size_t left;
529
530 if (anqp == NULL)
531 return NULL;
532 left = wpabuf_len(anqp);
533 if (left < 2)
534 return NULL;
535
536 pos = wpabuf_head_u8(anqp);
537 end = pos + left;
538 num = WPA_GET_LE16(pos);
539 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
540 pos += 2;
541 left -= 2;
542
543 if (num > left / 5) {
544 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
545 "enough data (%u octets) for that many realms",
546 num, (unsigned int) left);
547 return NULL;
548 }
549
550 realm = os_calloc(num, sizeof(struct nai_realm));
551 if (realm == NULL)
552 return NULL;
553
554 for (i = 0; i < num; i++) {
555 pos = nai_realm_parse_realm(&realm[i], pos, end);
556 if (pos == NULL) {
557 nai_realm_free(realm, num);
558 return NULL;
559 }
560 }
561
562 *count = num;
563 return realm;
564 }
565
566
567 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
568 {
569 char *tmp, *pos, *end;
570 int match = 0;
571
572 if (realm->realm == NULL || home_realm == NULL)
573 return 0;
574
575 if (os_strchr(realm->realm, ';') == NULL)
576 return os_strcasecmp(realm->realm, home_realm) == 0;
577
578 tmp = os_strdup(realm->realm);
579 if (tmp == NULL)
580 return 0;
581
582 pos = tmp;
583 while (*pos) {
584 end = os_strchr(pos, ';');
585 if (end)
586 *end = '\0';
587 if (os_strcasecmp(pos, home_realm) == 0) {
588 match = 1;
589 break;
590 }
591 if (end == NULL)
592 break;
593 pos = end + 1;
594 }
595
596 os_free(tmp);
597
598 return match;
599 }
600
601
602 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
603 struct nai_realm_eap *eap)
604 {
605 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
606 wpa_msg(wpa_s, MSG_DEBUG,
607 "nai-realm-cred-username: EAP method not supported: %d",
608 eap->method);
609 return 0; /* method not supported */
610 }
611
612 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
613 eap->method != EAP_TYPE_FAST) {
614 /* Only tunneled methods with username/password supported */
615 wpa_msg(wpa_s, MSG_DEBUG,
616 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
617 eap->method);
618 return 0;
619 }
620
621 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
622 if (eap->inner_method &&
623 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
624 wpa_msg(wpa_s, MSG_DEBUG,
625 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
626 eap->inner_method);
627 return 0;
628 }
629 if (!eap->inner_method &&
630 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
631 wpa_msg(wpa_s, MSG_DEBUG,
632 "nai-realm-cred-username: MSCHAPv2 not supported");
633 return 0;
634 }
635 }
636
637 if (eap->method == EAP_TYPE_TTLS) {
638 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
639 return 1; /* Assume TTLS/MSCHAPv2 is used */
640 if (eap->inner_method &&
641 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
642 wpa_msg(wpa_s, MSG_DEBUG,
643 "nai-realm-cred-username: TTLS, but inner not supported: %d",
644 eap->inner_method);
645 return 0;
646 }
647 if (eap->inner_non_eap &&
648 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
649 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
650 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
651 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
652 wpa_msg(wpa_s, MSG_DEBUG,
653 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
654 eap->inner_non_eap);
655 return 0;
656 }
657 }
658
659 if (eap->inner_method &&
660 eap->inner_method != EAP_TYPE_GTC &&
661 eap->inner_method != EAP_TYPE_MSCHAPV2) {
662 wpa_msg(wpa_s, MSG_DEBUG,
663 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
664 eap->inner_method);
665 return 0;
666 }
667
668 return 1;
669 }
670
671
672 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
673 struct nai_realm_eap *eap)
674 {
675 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
676 wpa_msg(wpa_s, MSG_DEBUG,
677 "nai-realm-cred-cert: Method not supported: %d",
678 eap->method);
679 return 0; /* method not supported */
680 }
681
682 if (eap->method != EAP_TYPE_TLS) {
683 /* Only EAP-TLS supported for credential authentication */
684 wpa_msg(wpa_s, MSG_DEBUG,
685 "nai-realm-cred-cert: Method not TLS: %d",
686 eap->method);
687 return 0;
688 }
689
690 return 1;
691 }
692
693
694 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
695 struct wpa_cred *cred,
696 struct nai_realm *realm)
697 {
698 u8 e;
699
700 if (cred->username == NULL ||
701 cred->username[0] == '\0' ||
702 ((cred->password == NULL ||
703 cred->password[0] == '\0') &&
704 (cred->private_key == NULL ||
705 cred->private_key[0] == '\0'))) {
706 wpa_msg(wpa_s, MSG_DEBUG,
707 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
708 cred->username ? cred->username : "NULL",
709 cred->password ? cred->password : "NULL",
710 cred->private_key ? cred->private_key : "NULL");
711 return NULL;
712 }
713
714 for (e = 0; e < realm->eap_count; e++) {
715 struct nai_realm_eap *eap = &realm->eap[e];
716 if (cred->password && cred->password[0] &&
717 nai_realm_cred_username(wpa_s, eap))
718 return eap;
719 if (cred->private_key && cred->private_key[0] &&
720 nai_realm_cred_cert(wpa_s, eap))
721 return eap;
722 }
723
724 return NULL;
725 }
726
727
728 #ifdef INTERWORKING_3GPP
729
730 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
731 {
732 u8 plmn[3], plmn2[3];
733 const u8 *pos, *end;
734 u8 udhl;
735
736 /*
737 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
738 * operator is allowed to include only two digits of the MNC, so allow
739 * matches based on both two and three digit MNC assumptions. Since some
740 * SIM/USIM cards may not expose MNC length conveniently, we may be
741 * provided the default MNC length 3 here and as such, checking with MNC
742 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
743 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
744 * with otherwise matching values would not be good idea in general, so
745 * this should not result in selecting incorrect networks.
746 */
747 /* Match with 3 digit MNC */
748 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
749 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
750 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
751 /* Match with 2 digit MNC */
752 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
753 plmn2[1] = (imsi[2] - '0') | 0xf0;
754 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
755
756 if (anqp == NULL)
757 return 0;
758 pos = wpabuf_head_u8(anqp);
759 end = pos + wpabuf_len(anqp);
760 if (end - pos < 2)
761 return 0;
762 if (*pos != 0) {
763 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
764 return 0;
765 }
766 pos++;
767 udhl = *pos++;
768 if (udhl > end - pos) {
769 wpa_printf(MSG_DEBUG, "Invalid UDHL");
770 return 0;
771 }
772 end = pos + udhl;
773
774 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
775 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
776 imsi, mnc_len);
777
778 while (end - pos >= 2) {
779 u8 iei, len;
780 const u8 *l_end;
781 iei = *pos++;
782 len = *pos++ & 0x7f;
783 if (len > end - pos)
784 break;
785 l_end = pos + len;
786
787 if (iei == 0 && len > 0) {
788 /* PLMN List */
789 u8 num, i;
790 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
791 pos, len);
792 num = *pos++;
793 for (i = 0; i < num; i++) {
794 if (l_end - pos < 3)
795 break;
796 if (os_memcmp(pos, plmn, 3) == 0 ||
797 os_memcmp(pos, plmn2, 3) == 0)
798 return 1; /* Found matching PLMN */
799 pos += 3;
800 }
801 } else {
802 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
803 pos, len);
804 }
805
806 pos = l_end;
807 }
808
809 return 0;
810 }
811
812
813 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
814 size_t mnc_len, char prefix)
815 {
816 const char *sep, *msin;
817 char *end, *pos;
818 size_t msin_len, plmn_len;
819
820 /*
821 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
822 * Root NAI:
823 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
824 * <MNC> is zero-padded to three digits in case two-digit MNC is used
825 */
826
827 if (imsi == NULL || os_strlen(imsi) > 16) {
828 wpa_printf(MSG_DEBUG, "No valid IMSI available");
829 return -1;
830 }
831 sep = os_strchr(imsi, '-');
832 if (sep) {
833 plmn_len = sep - imsi;
834 msin = sep + 1;
835 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
836 plmn_len = 3 + mnc_len;
837 msin = imsi + plmn_len;
838 } else
839 return -1;
840 if (plmn_len != 5 && plmn_len != 6)
841 return -1;
842 msin_len = os_strlen(msin);
843
844 pos = nai;
845 end = nai + nai_len;
846 if (prefix)
847 *pos++ = prefix;
848 os_memcpy(pos, imsi, plmn_len);
849 pos += plmn_len;
850 os_memcpy(pos, msin, msin_len);
851 pos += msin_len;
852 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
853 if (plmn_len == 5) {
854 *pos++ = '0';
855 *pos++ = imsi[3];
856 *pos++ = imsi[4];
857 } else {
858 *pos++ = imsi[3];
859 *pos++ = imsi[4];
860 *pos++ = imsi[5];
861 }
862 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
863 imsi[0], imsi[1], imsi[2]);
864
865 return 0;
866 }
867
868
869 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
870 {
871 char nai[100];
872 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
873 return -1;
874 return wpa_config_set_quoted(ssid, "identity", nai);
875 }
876
877 #endif /* INTERWORKING_3GPP */
878
879
880 static int already_connected(struct wpa_supplicant *wpa_s,
881 struct wpa_cred *cred, struct wpa_bss *bss)
882 {
883 struct wpa_ssid *ssid, *sel_ssid;
884 struct wpa_bss *selected;
885
886 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
887 return 0;
888
889 ssid = wpa_s->current_ssid;
890 if (ssid->parent_cred != cred)
891 return 0;
892
893 if (ssid->ssid_len != bss->ssid_len ||
894 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
895 return 0;
896
897 sel_ssid = NULL;
898 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
899 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
900 return 0; /* higher priority network in scan results */
901
902 return 1;
903 }
904
905
906 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
907 struct wpa_cred *cred,
908 struct wpa_bss *bss)
909 {
910 struct wpa_ssid *ssid;
911
912 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
913 if (ssid->parent_cred != cred)
914 continue;
915 if (ssid->ssid_len != bss->ssid_len ||
916 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
917 continue;
918
919 break;
920 }
921
922 if (ssid == NULL)
923 return;
924
925 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
926
927 if (ssid == wpa_s->current_ssid) {
928 wpa_sm_set_config(wpa_s->wpa, NULL);
929 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
930 wpa_s->own_disconnect_req = 1;
931 wpa_supplicant_deauthenticate(wpa_s,
932 WLAN_REASON_DEAUTH_LEAVING);
933 }
934
935 wpas_notify_network_removed(wpa_s, ssid);
936 wpa_config_remove_network(wpa_s->conf, ssid->id);
937 }
938
939
940 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
941 struct wpa_ssid *ssid)
942 {
943 const char *key_mgmt = NULL;
944 #ifdef CONFIG_IEEE80211R
945 int res;
946 struct wpa_driver_capa capa;
947
948 res = wpa_drv_get_capa(wpa_s, &capa);
949 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
950 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
951 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
952 "WPA-EAP FT-EAP";
953 }
954 #endif /* CONFIG_IEEE80211R */
955
956 if (!key_mgmt)
957 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
958 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
959 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
960 wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
961 wpa_config_set(ssid, "ieee80211w", "1", 0) < 0 ||
962 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
963 return -1;
964 return 0;
965 }
966
967
968 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
969 struct wpa_cred *cred,
970 struct wpa_bss *bss, int only_add)
971 {
972 #ifdef INTERWORKING_3GPP
973 struct wpa_ssid *ssid;
974 int eap_type;
975 int res;
976 char prefix;
977
978 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
979 return -1;
980
981 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
982 " (3GPP)", MAC2STR(bss->bssid));
983
984 if (already_connected(wpa_s, cred, bss)) {
985 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
986 MAC2STR(bss->bssid));
987 return wpa_s->current_ssid->id;
988 }
989
990 remove_duplicate_network(wpa_s, cred, bss);
991
992 ssid = wpa_config_add_network(wpa_s->conf);
993 if (ssid == NULL)
994 return -1;
995 ssid->parent_cred = cred;
996
997 wpas_notify_network_added(wpa_s, ssid);
998 wpa_config_set_network_defaults(ssid);
999 ssid->priority = cred->priority;
1000 ssid->temporary = 1;
1001 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1002 if (ssid->ssid == NULL)
1003 goto fail;
1004 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1005 ssid->ssid_len = bss->ssid_len;
1006 ssid->eap.sim_num = cred->sim_num;
1007
1008 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1009 goto fail;
1010
1011 eap_type = EAP_TYPE_SIM;
1012 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1013 eap_type = EAP_TYPE_AKA;
1014 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1015 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1016 cred->eap_method[0].method == EAP_TYPE_AKA ||
1017 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1018 eap_type = cred->eap_method[0].method;
1019 }
1020
1021 switch (eap_type) {
1022 case EAP_TYPE_SIM:
1023 prefix = '1';
1024 res = wpa_config_set(ssid, "eap", "SIM", 0);
1025 break;
1026 case EAP_TYPE_AKA:
1027 prefix = '0';
1028 res = wpa_config_set(ssid, "eap", "AKA", 0);
1029 break;
1030 case EAP_TYPE_AKA_PRIME:
1031 prefix = '6';
1032 res = wpa_config_set(ssid, "eap", "AKA'", 0);
1033 break;
1034 default:
1035 res = -1;
1036 break;
1037 }
1038 if (res < 0) {
1039 wpa_msg(wpa_s, MSG_DEBUG,
1040 "Selected EAP method (%d) not supported", eap_type);
1041 goto fail;
1042 }
1043
1044 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1045 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1046 goto fail;
1047 }
1048
1049 if (cred->milenage && cred->milenage[0]) {
1050 if (wpa_config_set_quoted(ssid, "password",
1051 cred->milenage) < 0)
1052 goto fail;
1053 } else if (cred->pcsc) {
1054 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1055 goto fail;
1056 if (wpa_s->conf->pcsc_pin &&
1057 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1058 < 0)
1059 goto fail;
1060 }
1061
1062 wpa_s->next_ssid = ssid;
1063 wpa_config_update_prio_list(wpa_s->conf);
1064 if (!only_add)
1065 interworking_reconnect(wpa_s);
1066
1067 return ssid->id;
1068
1069 fail:
1070 wpas_notify_network_removed(wpa_s, ssid);
1071 wpa_config_remove_network(wpa_s->conf, ssid->id);
1072 #endif /* INTERWORKING_3GPP */
1073 return -1;
1074 }
1075
1076
1077 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1078 size_t rc_len)
1079 {
1080 const u8 *pos, *end;
1081 u8 lens;
1082
1083 if (ie == NULL)
1084 return 0;
1085
1086 pos = ie + 2;
1087 end = ie + 2 + ie[1];
1088
1089 /* Roaming Consortium element:
1090 * Number of ANQP OIs
1091 * OI #1 and #2 lengths
1092 * OI #1, [OI #2], [OI #3]
1093 */
1094
1095 if (end - pos < 2)
1096 return 0;
1097
1098 pos++; /* skip Number of ANQP OIs */
1099 lens = *pos++;
1100 if ((lens & 0x0f) + (lens >> 4) > end - pos)
1101 return 0;
1102
1103 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1104 return 1;
1105 pos += lens & 0x0f;
1106
1107 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1108 return 1;
1109 pos += lens >> 4;
1110
1111 if (pos < end && (size_t) (end - pos) == rc_len &&
1112 os_memcmp(pos, rc_id, rc_len) == 0)
1113 return 1;
1114
1115 return 0;
1116 }
1117
1118
1119 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1120 const u8 *rc_id, size_t rc_len)
1121 {
1122 const u8 *pos, *end;
1123 u8 len;
1124
1125 if (anqp == NULL)
1126 return 0;
1127
1128 pos = wpabuf_head(anqp);
1129 end = pos + wpabuf_len(anqp);
1130
1131 /* Set of <OI Length, OI> duples */
1132 while (pos < end) {
1133 len = *pos++;
1134 if (len > end - pos)
1135 break;
1136 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1137 return 1;
1138 pos += len;
1139 }
1140
1141 return 0;
1142 }
1143
1144
1145 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1146 const u8 *rc_id, size_t rc_len)
1147 {
1148 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1149 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1150 }
1151
1152
1153 static int cred_roaming_consortiums_match(const u8 *ie,
1154 const struct wpabuf *anqp,
1155 const struct wpa_cred *cred)
1156 {
1157 unsigned int i;
1158
1159 for (i = 0; i < cred->num_roaming_consortiums; i++) {
1160 if (roaming_consortium_match(ie, anqp,
1161 cred->roaming_consortiums[i],
1162 cred->roaming_consortiums_len[i]))
1163 return 1;
1164 }
1165
1166 return 0;
1167 }
1168
1169
1170 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1171 {
1172 const u8 *ie;
1173
1174 if (cred->required_roaming_consortium_len == 0)
1175 return 0;
1176
1177 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1178
1179 if (ie == NULL &&
1180 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1181 return 1;
1182
1183 return !roaming_consortium_match(ie,
1184 bss->anqp ?
1185 bss->anqp->roaming_consortium : NULL,
1186 cred->required_roaming_consortium,
1187 cred->required_roaming_consortium_len);
1188 }
1189
1190
1191 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1192 {
1193 size_t i;
1194
1195 if (!cred->excluded_ssid)
1196 return 0;
1197
1198 for (i = 0; i < cred->num_excluded_ssid; i++) {
1199 struct excluded_ssid *e = &cred->excluded_ssid[i];
1200 if (bss->ssid_len == e->ssid_len &&
1201 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1202 return 1;
1203 }
1204
1205 return 0;
1206 }
1207
1208
1209 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1210 struct wpa_cred *cred, struct wpa_bss *bss)
1211 {
1212 #ifdef CONFIG_HS20
1213 int res;
1214 unsigned int dl_bandwidth, ul_bandwidth;
1215 const u8 *wan;
1216 u8 wan_info, dl_load, ul_load;
1217 u16 lmd;
1218 u32 ul_speed, dl_speed;
1219
1220 if (!cred->min_dl_bandwidth_home &&
1221 !cred->min_ul_bandwidth_home &&
1222 !cred->min_dl_bandwidth_roaming &&
1223 !cred->min_ul_bandwidth_roaming)
1224 return 0; /* No bandwidth constraint specified */
1225
1226 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1227 return 0; /* No WAN Metrics known - ignore constraint */
1228
1229 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1230 wan_info = wan[0];
1231 if (wan_info & BIT(3))
1232 return 1; /* WAN link at capacity */
1233 lmd = WPA_GET_LE16(wan + 11);
1234 if (lmd == 0)
1235 return 0; /* Downlink/Uplink Load was not measured */
1236 dl_speed = WPA_GET_LE32(wan + 1);
1237 ul_speed = WPA_GET_LE32(wan + 5);
1238 dl_load = wan[9];
1239 ul_load = wan[10];
1240
1241 if (dl_speed >= 0xffffff)
1242 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1243 else
1244 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1245
1246 if (ul_speed >= 0xffffff)
1247 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1248 else
1249 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1250
1251 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1252 bss->anqp->domain_name : NULL);
1253 if (res > 0) {
1254 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1255 return 1;
1256 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1257 return 1;
1258 } else {
1259 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1260 return 1;
1261 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1262 return 1;
1263 }
1264 #endif /* CONFIG_HS20 */
1265
1266 return 0;
1267 }
1268
1269
1270 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1271 struct wpa_cred *cred, struct wpa_bss *bss)
1272 {
1273 const u8 *ie;
1274 int res;
1275
1276 if (!cred->max_bss_load)
1277 return 0; /* No BSS Load constraint specified */
1278
1279 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1280 if (ie == NULL || ie[1] < 3)
1281 return 0; /* No BSS Load advertised */
1282
1283 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1284 bss->anqp->domain_name : NULL);
1285 if (res <= 0)
1286 return 0; /* Not a home network */
1287
1288 return ie[4] > cred->max_bss_load;
1289 }
1290
1291
1292 #ifdef CONFIG_HS20
1293
1294 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1295 {
1296 while (end - pos >= 4) {
1297 if (pos[0] == proto && pos[3] == 1 /* Open */)
1298 return 1;
1299 pos += 4;
1300 }
1301
1302 return 0;
1303 }
1304
1305
1306 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1307 u16 port)
1308 {
1309 while (end - pos >= 4) {
1310 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1311 pos[3] == 1 /* Open */)
1312 return 1;
1313 pos += 4;
1314 }
1315
1316 return 0;
1317 }
1318
1319 #endif /* CONFIG_HS20 */
1320
1321
1322 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1323 struct wpa_cred *cred, struct wpa_bss *bss)
1324 {
1325 #ifdef CONFIG_HS20
1326 int res;
1327 const u8 *capab, *end;
1328 unsigned int i, j;
1329 int *ports;
1330
1331 if (!cred->num_req_conn_capab)
1332 return 0; /* No connection capability constraint specified */
1333
1334 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1335 return 0; /* No Connection Capability known - ignore constraint
1336 */
1337
1338 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1339 bss->anqp->domain_name : NULL);
1340 if (res > 0)
1341 return 0; /* No constraint in home network */
1342
1343 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1344 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1345
1346 for (i = 0; i < cred->num_req_conn_capab; i++) {
1347 ports = cred->req_conn_capab_port[i];
1348 if (!ports) {
1349 if (!has_proto_match(capab, end,
1350 cred->req_conn_capab_proto[i]))
1351 return 1;
1352 } else {
1353 for (j = 0; ports[j] > -1; j++) {
1354 if (!has_proto_port_match(
1355 capab, end,
1356 cred->req_conn_capab_proto[i],
1357 ports[j]))
1358 return 1;
1359 }
1360 }
1361 }
1362 #endif /* CONFIG_HS20 */
1363
1364 return 0;
1365 }
1366
1367
1368 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1369 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1370 int *excluded)
1371 {
1372 struct wpa_cred *cred, *selected = NULL;
1373 const u8 *ie;
1374 const struct wpabuf *anqp;
1375 int is_excluded = 0;
1376
1377 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1378 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1379
1380 if (!ie && !anqp)
1381 return NULL;
1382
1383 if (wpa_s->conf->cred == NULL)
1384 return NULL;
1385
1386 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1387 if (cred->roaming_consortium_len == 0 &&
1388 cred->num_roaming_consortiums == 0)
1389 continue;
1390
1391 if (!cred->eap_method)
1392 continue;
1393
1394 if ((cred->roaming_consortium_len == 0 ||
1395 !roaming_consortium_match(ie, anqp,
1396 cred->roaming_consortium,
1397 cred->roaming_consortium_len)) &&
1398 !cred_roaming_consortiums_match(ie, anqp, cred) &&
1399 (cred->required_roaming_consortium_len == 0 ||
1400 !roaming_consortium_match(
1401 ie, anqp, cred->required_roaming_consortium,
1402 cred->required_roaming_consortium_len)))
1403 continue;
1404
1405 if (cred_no_required_oi_match(cred, bss))
1406 continue;
1407 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1408 continue;
1409 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1410 continue;
1411 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1412 continue;
1413 if (cred_excluded_ssid(cred, bss)) {
1414 if (excluded == NULL)
1415 continue;
1416 if (selected == NULL) {
1417 selected = cred;
1418 is_excluded = 1;
1419 }
1420 } else {
1421 if (selected == NULL || is_excluded ||
1422 cred_prio_cmp(selected, cred) < 0) {
1423 selected = cred;
1424 is_excluded = 0;
1425 }
1426 }
1427 }
1428
1429 if (excluded)
1430 *excluded = is_excluded;
1431
1432 return selected;
1433 }
1434
1435
1436 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1437 struct wpa_cred *cred, int ttls)
1438 {
1439 if (cred->eap_method) {
1440 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1441 cred->eap_method->method == EAP_TYPE_TTLS;
1442
1443 os_free(ssid->eap.eap_methods);
1444 ssid->eap.eap_methods =
1445 os_malloc(sizeof(struct eap_method_type) * 2);
1446 if (ssid->eap.eap_methods == NULL)
1447 return -1;
1448 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1449 sizeof(*cred->eap_method));
1450 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1451 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1452 }
1453
1454 if (ttls && cred->username && cred->username[0]) {
1455 const char *pos;
1456 char *anon;
1457 /* Use anonymous NAI in Phase 1 */
1458 pos = os_strchr(cred->username, '@');
1459 if (pos) {
1460 size_t buflen = 9 + os_strlen(pos) + 1;
1461 anon = os_malloc(buflen);
1462 if (anon == NULL)
1463 return -1;
1464 os_snprintf(anon, buflen, "anonymous%s", pos);
1465 } else if (cred->realm) {
1466 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1467 anon = os_malloc(buflen);
1468 if (anon == NULL)
1469 return -1;
1470 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1471 } else {
1472 anon = os_strdup("anonymous");
1473 if (anon == NULL)
1474 return -1;
1475 }
1476 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1477 0) {
1478 os_free(anon);
1479 return -1;
1480 }
1481 os_free(anon);
1482 }
1483
1484 if (!ttls && cred->username && cred->username[0] && cred->realm &&
1485 !os_strchr(cred->username, '@')) {
1486 char *id;
1487 size_t buflen;
1488 int res;
1489
1490 buflen = os_strlen(cred->username) + 1 +
1491 os_strlen(cred->realm) + 1;
1492
1493 id = os_malloc(buflen);
1494 if (!id)
1495 return -1;
1496 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
1497 res = wpa_config_set_quoted(ssid, "identity", id);
1498 os_free(id);
1499 if (res < 0)
1500 return -1;
1501 } else if (cred->username && cred->username[0] &&
1502 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1503 return -1;
1504
1505 if (cred->password && cred->password[0]) {
1506 if (cred->ext_password &&
1507 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1508 return -1;
1509 if (!cred->ext_password &&
1510 wpa_config_set_quoted(ssid, "password", cred->password) <
1511 0)
1512 return -1;
1513 }
1514
1515 if (cred->client_cert && cred->client_cert[0] &&
1516 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1517 return -1;
1518
1519 #ifdef ANDROID
1520 if (cred->private_key &&
1521 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1522 /* Use OpenSSL engine configuration for Android keystore */
1523 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1524 wpa_config_set_quoted(ssid, "key_id",
1525 cred->private_key + 11) < 0 ||
1526 wpa_config_set(ssid, "engine", "1", 0) < 0)
1527 return -1;
1528 } else
1529 #endif /* ANDROID */
1530 if (cred->private_key && cred->private_key[0] &&
1531 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1532 return -1;
1533
1534 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1535 wpa_config_set_quoted(ssid, "private_key_passwd",
1536 cred->private_key_passwd) < 0)
1537 return -1;
1538
1539 if (cred->phase1) {
1540 os_free(ssid->eap.phase1);
1541 ssid->eap.phase1 = os_strdup(cred->phase1);
1542 }
1543 if (cred->phase2) {
1544 os_free(ssid->eap.phase2);
1545 ssid->eap.phase2 = os_strdup(cred->phase2);
1546 }
1547
1548 if (cred->ca_cert && cred->ca_cert[0] &&
1549 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1550 return -1;
1551
1552 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1553 wpa_config_set_quoted(ssid, "domain_suffix_match",
1554 cred->domain_suffix_match) < 0)
1555 return -1;
1556
1557 ssid->eap.cert.ocsp = cred->ocsp;
1558
1559 return 0;
1560 }
1561
1562
1563 static int interworking_connect_roaming_consortium(
1564 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1565 struct wpa_bss *bss, int only_add)
1566 {
1567 struct wpa_ssid *ssid;
1568 const u8 *ie;
1569 const struct wpabuf *anqp;
1570 unsigned int i;
1571
1572 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1573 " based on roaming consortium match", MAC2STR(bss->bssid));
1574
1575 if (already_connected(wpa_s, cred, bss)) {
1576 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1577 MAC2STR(bss->bssid));
1578 return wpa_s->current_ssid->id;
1579 }
1580
1581 remove_duplicate_network(wpa_s, cred, bss);
1582
1583 ssid = wpa_config_add_network(wpa_s->conf);
1584 if (ssid == NULL)
1585 return -1;
1586 ssid->parent_cred = cred;
1587 wpas_notify_network_added(wpa_s, ssid);
1588 wpa_config_set_network_defaults(ssid);
1589 ssid->priority = cred->priority;
1590 ssid->temporary = 1;
1591 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1592 if (ssid->ssid == NULL)
1593 goto fail;
1594 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1595 ssid->ssid_len = bss->ssid_len;
1596
1597 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1598 goto fail;
1599
1600 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1601 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1602 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) {
1603 if (!roaming_consortium_match(
1604 ie, anqp, cred->roaming_consortiums[i],
1605 cred->roaming_consortiums_len[i]))
1606 continue;
1607
1608 ssid->roaming_consortium_selection =
1609 os_malloc(cred->roaming_consortiums_len[i]);
1610 if (!ssid->roaming_consortium_selection)
1611 goto fail;
1612 os_memcpy(ssid->roaming_consortium_selection,
1613 cred->roaming_consortiums[i],
1614 cred->roaming_consortiums_len[i]);
1615 ssid->roaming_consortium_selection_len =
1616 cred->roaming_consortiums_len[i];
1617 break;
1618 }
1619
1620 if (cred->eap_method == NULL) {
1621 wpa_msg(wpa_s, MSG_DEBUG,
1622 "Interworking: No EAP method set for credential using roaming consortium");
1623 goto fail;
1624 }
1625
1626 if (interworking_set_eap_params(
1627 ssid, cred,
1628 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1629 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1630 goto fail;
1631
1632 wpa_s->next_ssid = ssid;
1633 wpa_config_update_prio_list(wpa_s->conf);
1634 if (!only_add)
1635 interworking_reconnect(wpa_s);
1636
1637 return ssid->id;
1638
1639 fail:
1640 wpas_notify_network_removed(wpa_s, ssid);
1641 wpa_config_remove_network(wpa_s->conf, ssid->id);
1642 return -1;
1643 }
1644
1645
1646 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1647 int only_add)
1648 {
1649 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1650 struct wpa_ssid *ssid;
1651 struct nai_realm *realm;
1652 struct nai_realm_eap *eap = NULL;
1653 u16 count, i;
1654 char buf[100];
1655 int excluded = 0, *excl = &excluded;
1656 const char *name;
1657
1658 if (wpa_s->conf->cred == NULL || bss == NULL)
1659 return -1;
1660 if (disallowed_bssid(wpa_s, bss->bssid) ||
1661 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1662 wpa_msg(wpa_s, MSG_DEBUG,
1663 "Interworking: Reject connection to disallowed BSS "
1664 MACSTR, MAC2STR(bss->bssid));
1665 return -1;
1666 }
1667
1668 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1669 " for connection",
1670 MAC2STR(bss->bssid));
1671
1672 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1673 /*
1674 * We currently support only HS 2.0 networks and those are
1675 * required to use WPA2-Enterprise.
1676 */
1677 wpa_msg(wpa_s, MSG_DEBUG,
1678 "Interworking: Network does not use RSN");
1679 return -1;
1680 }
1681
1682 cred_rc = interworking_credentials_available_roaming_consortium(
1683 wpa_s, bss, 0, excl);
1684 if (cred_rc) {
1685 wpa_msg(wpa_s, MSG_DEBUG,
1686 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1687 cred_rc->priority, cred_rc->sp_priority);
1688 if (excl && !(*excl))
1689 excl = NULL;
1690 }
1691
1692 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1693 if (cred) {
1694 wpa_msg(wpa_s, MSG_DEBUG,
1695 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1696 cred->priority, cred->sp_priority);
1697 if (excl && !(*excl))
1698 excl = NULL;
1699 }
1700
1701 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1702 excl);
1703 if (cred_3gpp) {
1704 wpa_msg(wpa_s, MSG_DEBUG,
1705 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1706 cred_3gpp->priority, cred_3gpp->sp_priority);
1707 if (excl && !(*excl))
1708 excl = NULL;
1709 }
1710
1711 if (!cred_rc && !cred && !cred_3gpp) {
1712 wpa_msg(wpa_s, MSG_DEBUG,
1713 "Interworking: No full credential matches - consider options without BW(etc.) limits");
1714 cred_rc = interworking_credentials_available_roaming_consortium(
1715 wpa_s, bss, 1, excl);
1716 if (cred_rc) {
1717 wpa_msg(wpa_s, MSG_DEBUG,
1718 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1719 cred_rc->priority, cred_rc->sp_priority);
1720 if (excl && !(*excl))
1721 excl = NULL;
1722 }
1723
1724 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1725 excl);
1726 if (cred) {
1727 wpa_msg(wpa_s, MSG_DEBUG,
1728 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1729 cred->priority, cred->sp_priority);
1730 if (excl && !(*excl))
1731 excl = NULL;
1732 }
1733
1734 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1735 1, excl);
1736 if (cred_3gpp) {
1737 wpa_msg(wpa_s, MSG_DEBUG,
1738 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1739 cred_3gpp->priority, cred_3gpp->sp_priority);
1740 if (excl && !(*excl))
1741 excl = NULL;
1742 }
1743 }
1744
1745 if (cred_rc &&
1746 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1747 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1748 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1749 bss, only_add);
1750
1751 if (cred_3gpp &&
1752 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1753 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1754 only_add);
1755 }
1756
1757 if (cred == NULL) {
1758 wpa_msg(wpa_s, MSG_DEBUG,
1759 "Interworking: No matching credentials found for "
1760 MACSTR, MAC2STR(bss->bssid));
1761 return -1;
1762 }
1763
1764 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1765 &count);
1766 if (realm == NULL) {
1767 wpa_msg(wpa_s, MSG_DEBUG,
1768 "Interworking: Could not parse NAI Realm list from "
1769 MACSTR, MAC2STR(bss->bssid));
1770 return -1;
1771 }
1772
1773 for (i = 0; i < count; i++) {
1774 if (!nai_realm_match(&realm[i], cred->realm))
1775 continue;
1776 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1777 if (eap)
1778 break;
1779 }
1780
1781 if (!eap) {
1782 wpa_msg(wpa_s, MSG_DEBUG,
1783 "Interworking: No matching credentials and EAP method found for "
1784 MACSTR, MAC2STR(bss->bssid));
1785 nai_realm_free(realm, count);
1786 return -1;
1787 }
1788
1789 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1790 MAC2STR(bss->bssid));
1791
1792 if (already_connected(wpa_s, cred, bss)) {
1793 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1794 MAC2STR(bss->bssid));
1795 nai_realm_free(realm, count);
1796 return 0;
1797 }
1798
1799 remove_duplicate_network(wpa_s, cred, bss);
1800
1801 ssid = wpa_config_add_network(wpa_s->conf);
1802 if (ssid == NULL) {
1803 nai_realm_free(realm, count);
1804 return -1;
1805 }
1806 ssid->parent_cred = cred;
1807 wpas_notify_network_added(wpa_s, ssid);
1808 wpa_config_set_network_defaults(ssid);
1809 ssid->priority = cred->priority;
1810 ssid->temporary = 1;
1811 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1812 if (ssid->ssid == NULL)
1813 goto fail;
1814 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1815 ssid->ssid_len = bss->ssid_len;
1816
1817 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1818 goto fail;
1819
1820 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1821 eap->method), 0) < 0)
1822 goto fail;
1823
1824 switch (eap->method) {
1825 case EAP_TYPE_TTLS:
1826 if (eap->inner_method) {
1827 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method);
1828 if (!name)
1829 goto fail;
1830 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name);
1831 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1832 goto fail;
1833 break;
1834 }
1835 switch (eap->inner_non_eap) {
1836 case NAI_REALM_INNER_NON_EAP_PAP:
1837 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1838 0)
1839 goto fail;
1840 break;
1841 case NAI_REALM_INNER_NON_EAP_CHAP:
1842 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1843 < 0)
1844 goto fail;
1845 break;
1846 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1847 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1848 0) < 0)
1849 goto fail;
1850 break;
1851 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1852 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1853 0) < 0)
1854 goto fail;
1855 break;
1856 default:
1857 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1858 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1859 0) < 0)
1860 goto fail;
1861 break;
1862 }
1863 break;
1864 case EAP_TYPE_PEAP:
1865 case EAP_TYPE_FAST:
1866 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1867 0) < 0)
1868 goto fail;
1869 if (wpa_config_set(ssid, "pac_file",
1870 "\"blob://pac_interworking\"", 0) < 0)
1871 goto fail;
1872 name = eap_get_name(EAP_VENDOR_IETF,
1873 eap->inner_method ? eap->inner_method :
1874 EAP_TYPE_MSCHAPV2);
1875 if (name == NULL)
1876 goto fail;
1877 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1878 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1879 goto fail;
1880 break;
1881 case EAP_TYPE_TLS:
1882 break;
1883 }
1884
1885 if (interworking_set_eap_params(ssid, cred,
1886 eap->method == EAP_TYPE_TTLS) < 0)
1887 goto fail;
1888
1889 nai_realm_free(realm, count);
1890
1891 wpa_s->next_ssid = ssid;
1892 wpa_config_update_prio_list(wpa_s->conf);
1893 if (!only_add)
1894 interworking_reconnect(wpa_s);
1895
1896 return ssid->id;
1897
1898 fail:
1899 wpas_notify_network_removed(wpa_s, ssid);
1900 wpa_config_remove_network(wpa_s->conf, ssid->id);
1901 nai_realm_free(realm, count);
1902 return -1;
1903 }
1904
1905
1906 #ifdef PCSC_FUNCS
1907 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1908 {
1909 size_t len;
1910
1911 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1912 return 0;
1913
1914 len = sizeof(wpa_s->imsi) - 1;
1915 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1916 scard_deinit(wpa_s->scard);
1917 wpa_s->scard = NULL;
1918 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1919 return -1;
1920 }
1921 wpa_s->imsi[len] = '\0';
1922 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1923 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1924 wpa_s->imsi, wpa_s->mnc_len);
1925
1926 return 0;
1927 }
1928 #endif /* PCSC_FUNCS */
1929
1930
1931 static struct wpa_cred * interworking_credentials_available_3gpp(
1932 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1933 int *excluded)
1934 {
1935 struct wpa_cred *selected = NULL;
1936 #ifdef INTERWORKING_3GPP
1937 struct wpa_cred *cred;
1938 int ret;
1939 int is_excluded = 0;
1940
1941 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1942 wpa_msg(wpa_s, MSG_DEBUG,
1943 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1944 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1945 return NULL;
1946 }
1947
1948 #ifdef CONFIG_EAP_PROXY
1949 if (!wpa_s->imsi[0]) {
1950 size_t len;
1951 wpa_msg(wpa_s, MSG_DEBUG,
1952 "Interworking: IMSI not available - try to read again through eap_proxy");
1953 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1,
1954 wpa_s->imsi,
1955 &len);
1956 if (wpa_s->mnc_len > 0) {
1957 wpa_s->imsi[len] = '\0';
1958 wpa_msg(wpa_s, MSG_DEBUG,
1959 "eap_proxy: IMSI %s (MNC length %d)",
1960 wpa_s->imsi, wpa_s->mnc_len);
1961 } else {
1962 wpa_msg(wpa_s, MSG_DEBUG,
1963 "eap_proxy: IMSI not available");
1964 }
1965 }
1966 #endif /* CONFIG_EAP_PROXY */
1967
1968 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1969 char *sep;
1970 const char *imsi;
1971 int mnc_len;
1972 char imsi_buf[16];
1973 size_t msin_len;
1974
1975 #ifdef PCSC_FUNCS
1976 if (cred->pcsc && wpa_s->scard) {
1977 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1978 continue;
1979 imsi = wpa_s->imsi;
1980 mnc_len = wpa_s->mnc_len;
1981 goto compare;
1982 }
1983 #endif /* PCSC_FUNCS */
1984 #ifdef CONFIG_EAP_PROXY
1985 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1986 imsi = wpa_s->imsi;
1987 mnc_len = wpa_s->mnc_len;
1988 goto compare;
1989 }
1990 #endif /* CONFIG_EAP_PROXY */
1991
1992 if (cred->imsi == NULL || !cred->imsi[0] ||
1993 (!wpa_s->conf->external_sim &&
1994 (cred->milenage == NULL || !cred->milenage[0])))
1995 continue;
1996
1997 sep = os_strchr(cred->imsi, '-');
1998 if (sep == NULL ||
1999 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
2000 continue;
2001 mnc_len = sep - cred->imsi - 3;
2002 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
2003 sep++;
2004 msin_len = os_strlen(cred->imsi);
2005 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
2006 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
2007 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
2008 imsi_buf[3 + mnc_len + msin_len] = '\0';
2009 imsi = imsi_buf;
2010
2011 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
2012 compare:
2013 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
2014 wpa_msg(wpa_s, MSG_DEBUG,
2015 "Interworking: Parsing 3GPP info from " MACSTR,
2016 MAC2STR(bss->bssid));
2017 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
2018 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
2019 ret ? "" : "not ");
2020 if (ret) {
2021 if (cred_no_required_oi_match(cred, bss))
2022 continue;
2023 if (!ignore_bw &&
2024 cred_below_min_backhaul(wpa_s, cred, bss))
2025 continue;
2026 if (!ignore_bw &&
2027 cred_over_max_bss_load(wpa_s, cred, bss))
2028 continue;
2029 if (!ignore_bw &&
2030 cred_conn_capab_missing(wpa_s, cred, bss))
2031 continue;
2032 if (cred_excluded_ssid(cred, bss)) {
2033 if (excluded == NULL)
2034 continue;
2035 if (selected == NULL) {
2036 selected = cred;
2037 is_excluded = 1;
2038 }
2039 } else {
2040 if (selected == NULL || is_excluded ||
2041 cred_prio_cmp(selected, cred) < 0) {
2042 selected = cred;
2043 is_excluded = 0;
2044 }
2045 }
2046 }
2047 }
2048
2049 if (excluded)
2050 *excluded = is_excluded;
2051 #endif /* INTERWORKING_3GPP */
2052 return selected;
2053 }
2054
2055
2056 static struct wpa_cred * interworking_credentials_available_realm(
2057 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2058 int *excluded)
2059 {
2060 struct wpa_cred *cred, *selected = NULL;
2061 struct nai_realm *realm;
2062 u16 count, i;
2063 int is_excluded = 0;
2064
2065 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
2066 return NULL;
2067
2068 if (wpa_s->conf->cred == NULL)
2069 return NULL;
2070
2071 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
2072 MACSTR, MAC2STR(bss->bssid));
2073 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
2074 if (realm == NULL) {
2075 wpa_msg(wpa_s, MSG_DEBUG,
2076 "Interworking: Could not parse NAI Realm list from "
2077 MACSTR, MAC2STR(bss->bssid));
2078 return NULL;
2079 }
2080
2081 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2082 if (cred->realm == NULL)
2083 continue;
2084
2085 for (i = 0; i < count; i++) {
2086 if (!nai_realm_match(&realm[i], cred->realm))
2087 continue;
2088 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2089 if (cred_no_required_oi_match(cred, bss))
2090 continue;
2091 if (!ignore_bw &&
2092 cred_below_min_backhaul(wpa_s, cred, bss))
2093 continue;
2094 if (!ignore_bw &&
2095 cred_over_max_bss_load(wpa_s, cred, bss))
2096 continue;
2097 if (!ignore_bw &&
2098 cred_conn_capab_missing(wpa_s, cred, bss))
2099 continue;
2100 if (cred_excluded_ssid(cred, bss)) {
2101 if (excluded == NULL)
2102 continue;
2103 if (selected == NULL) {
2104 selected = cred;
2105 is_excluded = 1;
2106 }
2107 } else {
2108 if (selected == NULL || is_excluded ||
2109 cred_prio_cmp(selected, cred) < 0)
2110 {
2111 selected = cred;
2112 is_excluded = 0;
2113 }
2114 }
2115 break;
2116 } else {
2117 wpa_msg(wpa_s, MSG_DEBUG,
2118 "Interworking: realm-find-eap returned false");
2119 }
2120 }
2121 }
2122
2123 nai_realm_free(realm, count);
2124
2125 if (excluded)
2126 *excluded = is_excluded;
2127
2128 return selected;
2129 }
2130
2131
2132 static struct wpa_cred * interworking_credentials_available_helper(
2133 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2134 int *excluded)
2135 {
2136 struct wpa_cred *cred, *cred2;
2137 int excluded1, excluded2 = 0;
2138
2139 if (disallowed_bssid(wpa_s, bss->bssid) ||
2140 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2141 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2142 MACSTR, MAC2STR(bss->bssid));
2143 return NULL;
2144 }
2145
2146 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2147 &excluded1);
2148 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2149 &excluded2);
2150 if (cred && cred2 &&
2151 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2152 cred = cred2;
2153 excluded1 = excluded2;
2154 }
2155 if (!cred) {
2156 cred = cred2;
2157 excluded1 = excluded2;
2158 }
2159
2160 cred2 = interworking_credentials_available_roaming_consortium(
2161 wpa_s, bss, ignore_bw, &excluded2);
2162 if (cred && cred2 &&
2163 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2164 cred = cred2;
2165 excluded1 = excluded2;
2166 }
2167 if (!cred) {
2168 cred = cred2;
2169 excluded1 = excluded2;
2170 }
2171
2172 if (excluded)
2173 *excluded = excluded1;
2174 return cred;
2175 }
2176
2177
2178 static struct wpa_cred * interworking_credentials_available(
2179 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2180 {
2181 struct wpa_cred *cred;
2182
2183 if (excluded)
2184 *excluded = 0;
2185 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2186 excluded);
2187 if (cred)
2188 return cred;
2189 return interworking_credentials_available_helper(wpa_s, bss, 1,
2190 excluded);
2191 }
2192
2193
2194 int domain_name_list_contains(struct wpabuf *domain_names,
2195 const char *domain, int exact_match)
2196 {
2197 const u8 *pos, *end;
2198 size_t len;
2199
2200 len = os_strlen(domain);
2201 pos = wpabuf_head(domain_names);
2202 end = pos + wpabuf_len(domain_names);
2203
2204 while (end - pos > 1) {
2205 u8 elen;
2206
2207 elen = *pos++;
2208 if (elen > end - pos)
2209 break;
2210
2211 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2212 pos, elen);
2213 if (elen == len &&
2214 os_strncasecmp(domain, (const char *) pos, len) == 0)
2215 return 1;
2216 if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
2217 const char *ap = (const char *) pos;
2218 int offset = elen - len;
2219
2220 if (os_strncasecmp(domain, ap + offset, len) == 0)
2221 return 1;
2222 }
2223
2224 pos += elen;
2225 }
2226
2227 return 0;
2228 }
2229
2230
2231 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2232 struct wpa_cred *cred,
2233 struct wpabuf *domain_names)
2234 {
2235 size_t i;
2236 int ret = -1;
2237 #ifdef INTERWORKING_3GPP
2238 char nai[100], *realm;
2239
2240 char *imsi = NULL;
2241 int mnc_len = 0;
2242 if (cred->imsi)
2243 imsi = cred->imsi;
2244 #ifdef PCSC_FUNCS
2245 else if (cred->pcsc && wpa_s->scard) {
2246 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2247 return -1;
2248 imsi = wpa_s->imsi;
2249 mnc_len = wpa_s->mnc_len;
2250 }
2251 #endif /* PCSC_FUNCS */
2252 #ifdef CONFIG_EAP_PROXY
2253 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2254 imsi = wpa_s->imsi;
2255 mnc_len = wpa_s->mnc_len;
2256 }
2257 #endif /* CONFIG_EAP_PROXY */
2258 if (domain_names &&
2259 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2260 realm = os_strchr(nai, '@');
2261 if (realm)
2262 realm++;
2263 wpa_msg(wpa_s, MSG_DEBUG,
2264 "Interworking: Search for match with SIM/USIM domain %s",
2265 realm ? realm : "[NULL]");
2266 if (realm &&
2267 domain_name_list_contains(domain_names, realm, 1))
2268 return 1;
2269 if (realm)
2270 ret = 0;
2271 }
2272 #endif /* INTERWORKING_3GPP */
2273
2274 if (domain_names == NULL || cred->domain == NULL)
2275 return ret;
2276
2277 for (i = 0; i < cred->num_domain; i++) {
2278 wpa_msg(wpa_s, MSG_DEBUG,
2279 "Interworking: Search for match with home SP FQDN %s",
2280 cred->domain[i]);
2281 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2282 return 1;
2283 }
2284
2285 return 0;
2286 }
2287
2288
2289 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2290 struct wpabuf *domain_names)
2291 {
2292 struct wpa_cred *cred;
2293
2294 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2295 return -1;
2296
2297 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2298 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2299 if (res)
2300 return res;
2301 }
2302
2303 return 0;
2304 }
2305
2306
2307 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2308 {
2309 struct wpa_bss *bss;
2310 struct wpa_ssid *ssid;
2311
2312 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2313 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2314 if (wpas_network_disabled(wpa_s, ssid) ||
2315 ssid->mode != WPAS_MODE_INFRA)
2316 continue;
2317 if (ssid->ssid_len != bss->ssid_len ||
2318 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2319 0)
2320 continue;
2321 /*
2322 * TODO: Consider more accurate matching of security
2323 * configuration similarly to what is done in events.c
2324 */
2325 return 1;
2326 }
2327 }
2328
2329 return 0;
2330 }
2331
2332
2333 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2334 struct roaming_partner *partner,
2335 struct wpabuf *domain_names)
2336 {
2337 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2338 partner->fqdn, partner->exact_match, partner->priority,
2339 partner->country);
2340 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2341 wpabuf_head(domain_names),
2342 wpabuf_len(domain_names));
2343 if (!domain_name_list_contains(domain_names, partner->fqdn,
2344 partner->exact_match))
2345 return 0;
2346 /* TODO: match Country */
2347 return 1;
2348 }
2349
2350
2351 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2352 struct wpa_bss *bss)
2353 {
2354 size_t i;
2355
2356 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2357 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2358 return 128; /* cannot check preference with domain name */
2359 }
2360
2361 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2362 {
2363 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2364 return 0; /* max preference for home SP network */
2365 }
2366
2367 for (i = 0; i < cred->num_roaming_partner; i++) {
2368 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2369 bss->anqp->domain_name)) {
2370 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2371 cred->roaming_partner[i].priority);
2372 return cred->roaming_partner[i].priority;
2373 }
2374 }
2375
2376 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2377 return 128;
2378 }
2379
2380
2381 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2382 struct wpa_bss *selected,
2383 struct wpa_cred *cred)
2384 {
2385 struct wpa_bss *bss;
2386 u8 best_prio, prio;
2387 struct wpa_cred *cred2;
2388
2389 /*
2390 * Check if any other BSS is operated by a more preferred roaming
2391 * partner.
2392 */
2393
2394 best_prio = roaming_prio(wpa_s, cred, selected);
2395 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2396 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2397 cred->id);
2398
2399 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2400 if (bss == selected)
2401 continue;
2402 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2403 if (!cred2)
2404 continue;
2405 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2406 continue;
2407 prio = roaming_prio(wpa_s, cred2, bss);
2408 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2409 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2410 cred2->id);
2411 if (prio < best_prio) {
2412 int bh1, bh2, load1, load2, conn1, conn2;
2413 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2414 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2415 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2416 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2417 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2418 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2419 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2420 bh1, load1, conn1, bh2, load2, conn2);
2421 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2422 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2423 best_prio = prio;
2424 selected = bss;
2425 }
2426 }
2427 }
2428
2429 return selected;
2430 }
2431
2432
2433 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2434 {
2435 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2436 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2437 unsigned int count = 0;
2438 const char *type;
2439 int res;
2440 struct wpa_cred *cred, *selected_cred = NULL;
2441 struct wpa_cred *selected_home_cred = NULL;
2442 struct wpa_cred *selected2_cred = NULL;
2443 struct wpa_cred *selected2_home_cred = NULL;
2444
2445 wpa_s->network_select = 0;
2446
2447 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2448 wpa_s->auto_select);
2449 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2450 int excluded = 0;
2451 int bh, bss_load, conn_capab;
2452 cred = interworking_credentials_available(wpa_s, bss,
2453 &excluded);
2454 if (!cred)
2455 continue;
2456
2457 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2458 /*
2459 * We currently support only HS 2.0 networks and those
2460 * are required to use WPA2-Enterprise.
2461 */
2462 wpa_msg(wpa_s, MSG_DEBUG,
2463 "Interworking: Credential match with " MACSTR
2464 " but network does not use RSN",
2465 MAC2STR(bss->bssid));
2466 continue;
2467 }
2468 if (!excluded)
2469 count++;
2470 res = interworking_home_sp(wpa_s, bss->anqp ?
2471 bss->anqp->domain_name : NULL);
2472 if (res > 0)
2473 type = "home";
2474 else if (res == 0)
2475 type = "roaming";
2476 else
2477 type = "unknown";
2478 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2479 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2480 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2481 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2482 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2483 MAC2STR(bss->bssid), type,
2484 bh ? " below_min_backhaul=1" : "",
2485 bss_load ? " over_max_bss_load=1" : "",
2486 conn_capab ? " conn_capab_missing=1" : "",
2487 cred->id, cred->priority, cred->sp_priority);
2488 if (excluded)
2489 continue;
2490 if (wpa_s->auto_select ||
2491 (wpa_s->conf->auto_interworking &&
2492 wpa_s->auto_network_select)) {
2493 if (bh || bss_load || conn_capab) {
2494 if (selected2_cred == NULL ||
2495 cred_prio_cmp(cred, selected2_cred) > 0) {
2496 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2497 selected2 = bss;
2498 selected2_cred = cred;
2499 }
2500 if (res > 0 &&
2501 (selected2_home_cred == NULL ||
2502 cred_prio_cmp(cred, selected2_home_cred) >
2503 0)) {
2504 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2505 selected2_home = bss;
2506 selected2_home_cred = cred;
2507 }
2508 } else {
2509 if (selected_cred == NULL ||
2510 cred_prio_cmp(cred, selected_cred) > 0) {
2511 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2512 selected = bss;
2513 selected_cred = cred;
2514 }
2515 if (res > 0 &&
2516 (selected_home_cred == NULL ||
2517 cred_prio_cmp(cred, selected_home_cred) >
2518 0)) {
2519 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2520 selected_home = bss;
2521 selected_home_cred = cred;
2522 }
2523 }
2524 }
2525 }
2526
2527 if (selected_home && selected_home != selected &&
2528 selected_home_cred &&
2529 (selected_cred == NULL ||
2530 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2531 /* Prefer network operated by the Home SP */
2532 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2533 selected = selected_home;
2534 selected_cred = selected_home_cred;
2535 }
2536
2537 if (!selected) {
2538 if (selected2_home) {
2539 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2540 selected = selected2_home;
2541 selected_cred = selected2_home_cred;
2542 } else if (selected2) {
2543 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2544 selected = selected2;
2545 selected_cred = selected2_cred;
2546 }
2547 }
2548
2549 if (count == 0) {
2550 /*
2551 * No matching network was found based on configured
2552 * credentials. Check whether any of the enabled network blocks
2553 * have matching APs.
2554 */
2555 if (interworking_find_network_match(wpa_s)) {
2556 wpa_msg(wpa_s, MSG_DEBUG,
2557 "Interworking: Possible BSS match for enabled network configurations");
2558 if (wpa_s->auto_select) {
2559 interworking_reconnect(wpa_s);
2560 return;
2561 }
2562 }
2563
2564 if (wpa_s->auto_network_select) {
2565 wpa_msg(wpa_s, MSG_DEBUG,
2566 "Interworking: Continue scanning after ANQP fetch");
2567 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2568 0);
2569 return;
2570 }
2571
2572 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2573 "with matching credentials found");
2574 if (wpa_s->wpa_state == WPA_SCANNING)
2575 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2576 }
2577
2578 if (selected) {
2579 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2580 MAC2STR(selected->bssid));
2581 selected = pick_best_roaming_partner(wpa_s, selected,
2582 selected_cred);
2583 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2584 " (after best roaming partner selection)",
2585 MAC2STR(selected->bssid));
2586 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2587 MAC2STR(selected->bssid));
2588 interworking_connect(wpa_s, selected, 0);
2589 } else if (wpa_s->wpa_state == WPA_SCANNING)
2590 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2591 }
2592
2593
2594 static struct wpa_bss_anqp *
2595 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2596 {
2597 struct wpa_bss *other;
2598
2599 if (is_zero_ether_addr(bss->hessid))
2600 return NULL; /* Cannot be in the same homegenous ESS */
2601
2602 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2603 if (other == bss)
2604 continue;
2605 if (other->anqp == NULL)
2606 continue;
2607 if (other->anqp->roaming_consortium == NULL &&
2608 other->anqp->nai_realm == NULL &&
2609 other->anqp->anqp_3gpp == NULL &&
2610 other->anqp->domain_name == NULL)
2611 continue;
2612 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2613 continue;
2614 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2615 continue;
2616 if (bss->ssid_len != other->ssid_len ||
2617 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2618 continue;
2619
2620 wpa_msg(wpa_s, MSG_DEBUG,
2621 "Interworking: Share ANQP data with already fetched BSSID "
2622 MACSTR " and " MACSTR,
2623 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2624 other->anqp->users++;
2625 return other->anqp;
2626 }
2627
2628 return NULL;
2629 }
2630
2631
2632 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2633 {
2634 struct wpa_bss *bss;
2635 int found = 0;
2636
2637 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2638 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2639 wpa_s->fetch_anqp_in_progress,
2640 wpa_s->fetch_osu_icon_in_progress);
2641
2642 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2643 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2644 return;
2645 }
2646
2647 #ifdef CONFIG_HS20
2648 if (wpa_s->fetch_osu_icon_in_progress) {
2649 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2650 hs20_next_osu_icon(wpa_s);
2651 return;
2652 }
2653 #endif /* CONFIG_HS20 */
2654
2655 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2656 if (!(bss->caps & IEEE80211_CAP_ESS))
2657 continue;
2658 if (!wpa_bss_ext_capab(bss, WLAN_EXT_CAPAB_INTERWORKING))
2659 continue; /* AP does not support Interworking */
2660 if (disallowed_bssid(wpa_s, bss->bssid) ||
2661 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2662 continue; /* Disallowed BSS */
2663
2664 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2665 if (bss->anqp == NULL) {
2666 bss->anqp = interworking_match_anqp_info(wpa_s,
2667 bss);
2668 if (bss->anqp) {
2669 /* Shared data already fetched */
2670 continue;
2671 }
2672 bss->anqp = wpa_bss_anqp_alloc();
2673 if (bss->anqp == NULL)
2674 break;
2675 }
2676 found++;
2677 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2678 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2679 MACSTR " (HESSID " MACSTR ")",
2680 MAC2STR(bss->bssid), MAC2STR(bss->hessid));
2681 interworking_anqp_send_req(wpa_s, bss);
2682 break;
2683 }
2684 }
2685
2686 if (found == 0) {
2687 #ifdef CONFIG_HS20
2688 if (wpa_s->fetch_osu_info) {
2689 if (wpa_s->num_prov_found == 0 &&
2690 wpa_s->fetch_osu_waiting_scan &&
2691 wpa_s->num_osu_scans < 3) {
2692 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2693 hs20_start_osu_scan(wpa_s);
2694 return;
2695 }
2696 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2697 hs20_osu_icon_fetch(wpa_s);
2698 return;
2699 }
2700 #endif /* CONFIG_HS20 */
2701 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2702 wpa_s->fetch_anqp_in_progress = 0;
2703 if (wpa_s->network_select)
2704 interworking_select_network(wpa_s);
2705 }
2706 }
2707
2708
2709 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2710 {
2711 struct wpa_bss *bss;
2712
2713 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2714 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2715
2716 wpa_s->fetch_anqp_in_progress = 1;
2717
2718 /*
2719 * Start actual ANQP operation from eloop call to make sure the loop
2720 * does not end up using excessive recursion.
2721 */
2722 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2723 }
2724
2725
2726 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2727 {
2728 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2729 return 0;
2730
2731 wpa_s->network_select = 0;
2732 wpa_s->fetch_all_anqp = 1;
2733 wpa_s->fetch_osu_info = 0;
2734
2735 interworking_start_fetch_anqp(wpa_s);
2736
2737 return 0;
2738 }
2739
2740
2741 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2742 {
2743 if (!wpa_s->fetch_anqp_in_progress)
2744 return;
2745
2746 wpa_s->fetch_anqp_in_progress = 0;
2747 }
2748
2749
2750 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2751 u16 info_ids[], size_t num_ids, u32 subtypes,
2752 u32 mbo_subtypes)
2753 {
2754 struct wpabuf *buf;
2755 struct wpabuf *extra_buf = NULL;
2756 int ret = 0;
2757 int freq;
2758 struct wpa_bss *bss;
2759 int res;
2760
2761 bss = wpa_bss_get_bssid(wpa_s, dst);
2762 if (!bss) {
2763 wpa_printf(MSG_WARNING,
2764 "ANQP: Cannot send query to unknown BSS "
2765 MACSTR, MAC2STR(dst));
2766 return -1;
2767 }
2768
2769 wpa_bss_anqp_unshare_alloc(bss);
2770 freq = bss->freq;
2771
2772 wpa_msg(wpa_s, MSG_DEBUG,
2773 "ANQP: Query Request to " MACSTR " for %u id(s)",
2774 MAC2STR(dst), (unsigned int) num_ids);
2775
2776 #ifdef CONFIG_HS20
2777 if (subtypes != 0) {
2778 extra_buf = wpabuf_alloc(100);
2779 if (extra_buf == NULL)
2780 return -1;
2781 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
2782 }
2783 #endif /* CONFIG_HS20 */
2784
2785 #ifdef CONFIG_MBO
2786 if (mbo_subtypes) {
2787 struct wpabuf *mbo;
2788
2789 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes);
2790 if (mbo) {
2791 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
2792 wpabuf_free(extra_buf);
2793 wpabuf_free(mbo);
2794 return -1;
2795 }
2796 wpabuf_put_buf(extra_buf, mbo);
2797 wpabuf_free(mbo);
2798 }
2799 }
2800 #endif /* CONFIG_MBO */
2801
2802 buf = anqp_build_req(info_ids, num_ids, extra_buf);
2803 wpabuf_free(extra_buf);
2804 if (buf == NULL)
2805 return -1;
2806
2807 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s);
2808 if (res < 0) {
2809 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2810 wpabuf_free(buf);
2811 ret = -1;
2812 } else {
2813 wpa_msg(wpa_s, MSG_DEBUG,
2814 "ANQP: Query started with dialog token %u", res);
2815 }
2816
2817 return ret;
2818 }
2819
2820
2821 static void anqp_add_extra(struct wpa_supplicant *wpa_s,
2822 struct wpa_bss_anqp *anqp, u16 info_id,
2823 const u8 *data, size_t slen)
2824 {
2825 struct wpa_bss_anqp_elem *tmp, *elem = NULL;
2826
2827 if (!anqp)
2828 return;
2829
2830 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
2831 list) {
2832 if (tmp->infoid == info_id) {
2833 elem = tmp;
2834 break;
2835 }
2836 }
2837
2838 if (!elem) {
2839 elem = os_zalloc(sizeof(*elem));
2840 if (!elem)
2841 return;
2842 elem->infoid = info_id;
2843 dl_list_add(&anqp->anqp_elems, &elem->list);
2844 } else {
2845 wpabuf_free(elem->payload);
2846 }
2847
2848 elem->payload = wpabuf_alloc_copy(data, slen);
2849 if (!elem->payload) {
2850 dl_list_del(&elem->list);
2851 os_free(elem);
2852 }
2853 }
2854
2855
2856 static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s,
2857 const u8 *data, size_t len)
2858 {
2859 const u8 *pos = data, *end = data + len;
2860 char url[255];
2861
2862 while (end - pos >= 2) {
2863 u8 slen, num;
2864
2865 slen = *pos++;
2866 if (slen < 1 || slen > end - pos) {
2867 wpa_printf(MSG_DEBUG,
2868 "ANQP: Truncated Venue URL Duple field");
2869 return;
2870 }
2871
2872 num = *pos++;
2873 os_memcpy(url, pos, slen - 1);
2874 url[slen - 1] = '\0';
2875 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url);
2876 pos += slen - 1;
2877 }
2878 }
2879
2880
2881 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2882 struct wpa_bss *bss, const u8 *sa,
2883 u16 info_id,
2884 const u8 *data, size_t slen,
2885 u8 dialog_token)
2886 {
2887 const u8 *pos = data;
2888 struct wpa_bss_anqp *anqp = NULL;
2889 u8 type;
2890
2891 if (bss)
2892 anqp = bss->anqp;
2893
2894 switch (info_id) {
2895 case ANQP_CAPABILITY_LIST:
2896 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2897 " ANQP Capability list", MAC2STR(sa));
2898 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2899 pos, slen);
2900 if (anqp) {
2901 wpabuf_free(anqp->capability_list);
2902 anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2903 }
2904 break;
2905 case ANQP_VENUE_NAME:
2906 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2907 " Venue Name", MAC2STR(sa));
2908 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2909 if (anqp) {
2910 wpabuf_free(anqp->venue_name);
2911 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2912 }
2913 break;
2914 case ANQP_NETWORK_AUTH_TYPE:
2915 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2916 " Network Authentication Type information",
2917 MAC2STR(sa));
2918 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2919 "Type", pos, slen);
2920 if (anqp) {
2921 wpabuf_free(anqp->network_auth_type);
2922 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2923 }
2924 break;
2925 case ANQP_ROAMING_CONSORTIUM:
2926 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2927 " Roaming Consortium list", MAC2STR(sa));
2928 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2929 pos, slen);
2930 if (anqp) {
2931 wpabuf_free(anqp->roaming_consortium);
2932 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2933 }
2934 break;
2935 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2936 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2937 " IP Address Type Availability information",
2938 MAC2STR(sa));
2939 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2940 pos, slen);
2941 if (anqp) {
2942 wpabuf_free(anqp->ip_addr_type_availability);
2943 anqp->ip_addr_type_availability =
2944 wpabuf_alloc_copy(pos, slen);
2945 }
2946 break;
2947 case ANQP_NAI_REALM:
2948 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2949 " NAI Realm list", MAC2STR(sa));
2950 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2951 if (anqp) {
2952 wpabuf_free(anqp->nai_realm);
2953 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2954 }
2955 break;
2956 case ANQP_3GPP_CELLULAR_NETWORK:
2957 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2958 " 3GPP Cellular Network information", MAC2STR(sa));
2959 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2960 pos, slen);
2961 if (anqp) {
2962 wpabuf_free(anqp->anqp_3gpp);
2963 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2964 }
2965 break;
2966 case ANQP_DOMAIN_NAME:
2967 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2968 " Domain Name list", MAC2STR(sa));
2969 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2970 if (anqp) {
2971 wpabuf_free(anqp->domain_name);
2972 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2973 }
2974 break;
2975 #ifdef CONFIG_FILS
2976 case ANQP_FILS_REALM_INFO:
2977 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2978 " FILS Realm Information", MAC2STR(sa));
2979 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information",
2980 pos, slen);
2981 if (anqp) {
2982 wpabuf_free(anqp->fils_realm_info);
2983 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen);
2984 }
2985 break;
2986 #endif /* CONFIG_FILS */
2987 case ANQP_VENUE_URL:
2988 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL",
2989 MAC2STR(sa));
2990 anqp_add_extra(wpa_s, anqp, info_id, pos, slen);
2991
2992 if (!pmf_in_use(wpa_s, sa)) {
2993 wpa_printf(MSG_DEBUG,
2994 "ANQP: Ignore Venue URL since PMF was not enabled");
2995 break;
2996 }
2997 interworking_parse_venue_url(wpa_s, pos, slen);
2998 break;
2999 case ANQP_VENDOR_SPECIFIC:
3000 if (slen < 3)
3001 return;
3002
3003 switch (WPA_GET_BE24(pos)) {
3004 case OUI_WFA:
3005 pos += 3;
3006 slen -= 3;
3007
3008 if (slen < 1)
3009 return;
3010 type = *pos++;
3011 slen--;
3012
3013 switch (type) {
3014 #ifdef CONFIG_HS20
3015 case HS20_ANQP_OUI_TYPE:
3016 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
3017 pos, slen,
3018 dialog_token);
3019 break;
3020 #endif /* CONFIG_HS20 */
3021 #ifdef CONFIG_MBO
3022 case MBO_ANQP_OUI_TYPE:
3023 mbo_parse_rx_anqp_resp(wpa_s, bss, sa,
3024 pos, slen);
3025 break;
3026 #endif /* CONFIG_MBO */
3027 default:
3028 wpa_msg(wpa_s, MSG_DEBUG,
3029 "ANQP: Unsupported ANQP vendor type %u",
3030 type);
3031 break;
3032 }
3033 break;
3034 default:
3035 wpa_msg(wpa_s, MSG_DEBUG,
3036 "Interworking: Unsupported vendor-specific ANQP OUI %06x",
3037 WPA_GET_BE24(pos));
3038 return;
3039 }
3040 break;
3041 default:
3042 wpa_msg(wpa_s, MSG_DEBUG,
3043 "Interworking: Unsupported ANQP Info ID %u", info_id);
3044 anqp_add_extra(wpa_s, anqp, info_id, data, slen);
3045 break;
3046 }
3047 }
3048
3049
3050 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
3051 enum gas_query_result result,
3052 const struct wpabuf *adv_proto,
3053 const struct wpabuf *resp, u16 status_code)
3054 {
3055 struct wpa_supplicant *wpa_s = ctx;
3056 const u8 *pos;
3057 const u8 *end;
3058 u16 info_id;
3059 u16 slen;
3060 struct wpa_bss *bss = NULL, *tmp;
3061 const char *anqp_result = "SUCCESS";
3062
3063 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
3064 " dialog_token=%u result=%d status_code=%u",
3065 MAC2STR(dst), dialog_token, result, status_code);
3066 if (result != GAS_QUERY_SUCCESS) {
3067 #ifdef CONFIG_HS20
3068 if (wpa_s->fetch_osu_icon_in_progress)
3069 hs20_icon_fetch_failed(wpa_s);
3070 #endif /* CONFIG_HS20 */
3071 anqp_result = "FAILURE";
3072 goto out;
3073 }
3074
3075 pos = wpabuf_head(adv_proto);
3076 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
3077 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
3078 wpa_msg(wpa_s, MSG_DEBUG,
3079 "ANQP: Unexpected Advertisement Protocol in response");
3080 #ifdef CONFIG_HS20
3081 if (wpa_s->fetch_osu_icon_in_progress)
3082 hs20_icon_fetch_failed(wpa_s);
3083 #endif /* CONFIG_HS20 */
3084 anqp_result = "INVALID_FRAME";
3085 goto out;
3086 }
3087
3088 /*
3089 * If possible, select the BSS entry based on which BSS entry was used
3090 * for the request. This can help in cases where multiple BSS entries
3091 * may exist for the same AP.
3092 */
3093 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
3094 if (tmp == wpa_s->interworking_gas_bss &&
3095 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
3096 bss = tmp;
3097 break;
3098 }
3099 }
3100 if (bss == NULL)
3101 bss = wpa_bss_get_bssid(wpa_s, dst);
3102
3103 pos = wpabuf_head(resp);
3104 end = pos + wpabuf_len(resp);
3105
3106 while (pos < end) {
3107 unsigned int left = end - pos;
3108
3109 if (left < 4) {
3110 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
3111 anqp_result = "INVALID_FRAME";
3112 goto out_parse_done;
3113 }
3114 info_id = WPA_GET_LE16(pos);
3115 pos += 2;
3116 slen = WPA_GET_LE16(pos);
3117 pos += 2;
3118 left -= 4;
3119 if (left < slen) {
3120 wpa_msg(wpa_s, MSG_DEBUG,
3121 "ANQP: Invalid element length for Info ID %u",
3122 info_id);
3123 anqp_result = "INVALID_FRAME";
3124 goto out_parse_done;
3125 }
3126 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
3127 slen, dialog_token);
3128 pos += slen;
3129 }
3130
3131 out_parse_done:
3132 #ifdef CONFIG_HS20
3133 hs20_notify_parse_done(wpa_s);
3134 #endif /* CONFIG_HS20 */
3135 out:
3136 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
3137 MAC2STR(dst), anqp_result);
3138 }
3139
3140
3141 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
3142 struct wpa_scan_results *scan_res)
3143 {
3144 wpa_msg(wpa_s, MSG_DEBUG,
3145 "Interworking: Scan results available - start ANQP fetch");
3146 interworking_start_fetch_anqp(wpa_s);
3147 }
3148
3149
3150 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
3151 int *freqs)
3152 {
3153 interworking_stop_fetch_anqp(wpa_s);
3154 wpa_s->network_select = 1;
3155 wpa_s->auto_network_select = 0;
3156 wpa_s->auto_select = !!auto_select;
3157 wpa_s->fetch_all_anqp = 0;
3158 wpa_s->fetch_osu_info = 0;
3159 wpa_msg(wpa_s, MSG_DEBUG,
3160 "Interworking: Start scan for network selection");
3161 wpa_s->scan_res_handler = interworking_scan_res_handler;
3162 wpa_s->normal_scans = 0;
3163 wpa_s->scan_req = MANUAL_SCAN_REQ;
3164 os_free(wpa_s->manual_scan_freqs);
3165 wpa_s->manual_scan_freqs = freqs;
3166 wpa_s->after_wps = 0;
3167 wpa_s->known_wps_freq = 0;
3168 wpa_supplicant_req_scan(wpa_s, 0, 0);
3169
3170 return 0;
3171 }
3172
3173
3174 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
3175 enum gas_query_result result,
3176 const struct wpabuf *adv_proto,
3177 const struct wpabuf *resp, u16 status_code)
3178 {
3179 struct wpa_supplicant *wpa_s = ctx;
3180 struct wpabuf *n;
3181
3182 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
3183 " dialog_token=%d status_code=%d resp_len=%d",
3184 MAC2STR(addr), dialog_token, status_code,
3185 resp ? (int) wpabuf_len(resp) : -1);
3186 if (!resp)
3187 return;
3188
3189 n = wpabuf_dup(resp);
3190 if (n == NULL)
3191 return;
3192 wpabuf_free(wpa_s->prev_gas_resp);
3193 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
3194 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
3195 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
3196 wpa_s->last_gas_resp = n;
3197 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
3198 wpa_s->last_gas_dialog_token = dialog_token;
3199 }
3200
3201
3202 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3203 const struct wpabuf *adv_proto,
3204 const struct wpabuf *query)
3205 {
3206 struct wpabuf *buf;
3207 int ret = 0;
3208 int freq;
3209 struct wpa_bss *bss;
3210 int res;
3211 size_t len;
3212 u8 query_resp_len_limit = 0;
3213
3214 freq = wpa_s->assoc_freq;
3215 bss = wpa_bss_get_bssid(wpa_s, dst);
3216 if (bss)
3217 freq = bss->freq;
3218 if (freq <= 0)
3219 return -1;
3220
3221 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3222 MAC2STR(dst), freq);
3223 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3224 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3225
3226 len = 3 + wpabuf_len(adv_proto) + 2;
3227 if (query)
3228 len += wpabuf_len(query);
3229 buf = gas_build_initial_req(0, len);
3230 if (buf == NULL)
3231 return -1;
3232
3233 /* Advertisement Protocol IE */
3234 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3235 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3236 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3237 wpabuf_put_buf(buf, adv_proto);
3238
3239 /* GAS Query */
3240 if (query) {
3241 wpabuf_put_le16(buf, wpabuf_len(query));
3242 wpabuf_put_buf(buf, query);
3243 } else
3244 wpabuf_put_le16(buf, 0);
3245
3246 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, gas_resp_cb, wpa_s);
3247 if (res < 0) {
3248 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3249 wpabuf_free(buf);
3250 ret = -1;
3251 } else
3252 wpa_msg(wpa_s, MSG_DEBUG,
3253 "GAS: Query started with dialog token %u", res);
3254
3255 return ret;
3256 }
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