]> git.ipfire.org Git - thirdparty/hostap.git/blob - wpa_supplicant/interworking.c
projects / thirdparty / hostap.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
HS 2.0R2: Try to scan multiple times for OSU providers
[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 "gas_query.h"
31 #include "hs20_supplicant.h"
32 #include "interworking.h"
33
34
35 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
36 #define INTERWORKING_3GPP
37 #else
38 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
39 #define INTERWORKING_3GPP
40 #else
41 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
42 #define INTERWORKING_3GPP
43 #endif
44 #endif
45 #endif
46
47 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
48 static struct wpa_cred * interworking_credentials_available_realm(
49 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
50 int *excluded);
51 static struct wpa_cred * interworking_credentials_available_3gpp(
52 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
53 int *excluded);
54
55
56 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
57 {
58 if (a->priority > b->priority)
59 return 1;
60 if (a->priority < b->priority)
61 return -1;
62 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
63 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
64 return 0;
65 if (a->sp_priority < b->sp_priority)
66 return 1;
67 if (a->sp_priority > b->sp_priority)
68 return -1;
69 return 0;
70 }
71
72
73 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
74 {
75 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
76 wpa_supplicant_cancel_sched_scan(wpa_s);
77 wpa_supplicant_deauthenticate(wpa_s,
78 WLAN_REASON_DEAUTH_LEAVING);
79 }
80 wpa_s->disconnected = 0;
81 wpa_s->reassociate = 1;
82
83 if (wpa_supplicant_fast_associate(wpa_s) >= 0)
84 return;
85
86 wpa_supplicant_req_scan(wpa_s, 0, 0);
87 }
88
89
90 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
91 struct wpabuf *extra)
92 {
93 struct wpabuf *buf;
94 size_t i;
95 u8 *len_pos;
96
97 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
98 (extra ? wpabuf_len(extra) : 0));
99 if (buf == NULL)
100 return NULL;
101
102 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
103 for (i = 0; i < num_ids; i++)
104 wpabuf_put_le16(buf, info_ids[i]);
105 gas_anqp_set_element_len(buf, len_pos);
106 if (extra)
107 wpabuf_put_buf(buf, extra);
108
109 gas_anqp_set_len(buf);
110
111 return buf;
112 }
113
114
115 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
116 u8 dialog_token,
117 enum gas_query_result result,
118 const struct wpabuf *adv_proto,
119 const struct wpabuf *resp,
120 u16 status_code)
121 {
122 struct wpa_supplicant *wpa_s = ctx;
123
124 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
125 " dialog_token=%u result=%d status_code=%u",
126 MAC2STR(dst), dialog_token, result, status_code);
127 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
128 status_code);
129 interworking_next_anqp_fetch(wpa_s);
130 }
131
132
133 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
134 {
135 struct wpa_cred *cred;
136
137 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
138 if (cred->roaming_consortium_len)
139 return 1;
140 if (cred->required_roaming_consortium_len)
141 return 1;
142 }
143 return 0;
144 }
145
146
147 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
148 {
149 struct wpa_cred *cred;
150
151 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
152 if (cred->pcsc || cred->imsi)
153 return 1;
154 }
155 return 0;
156 }
157
158
159 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
160 {
161 struct wpa_cred *cred;
162
163 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
164 if (cred->pcsc || cred->imsi)
165 continue;
166 if (!cred->eap_method)
167 return 1;
168 if (cred->realm && cred->roaming_consortium_len == 0)
169 return 1;
170 }
171 return 0;
172 }
173
174
175 static int cred_with_domain(struct wpa_supplicant *wpa_s)
176 {
177 struct wpa_cred *cred;
178
179 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
180 if (cred->domain || cred->pcsc || cred->imsi ||
181 cred->roaming_partner)
182 return 1;
183 }
184 return 0;
185 }
186
187
188 #ifdef CONFIG_HS20
189
190 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
191 {
192 struct wpa_cred *cred;
193
194 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
195 if (cred->min_dl_bandwidth_home ||
196 cred->min_ul_bandwidth_home ||
197 cred->min_dl_bandwidth_roaming ||
198 cred->min_ul_bandwidth_roaming)
199 return 1;
200 }
201 return 0;
202 }
203
204
205 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
206 {
207 struct wpa_cred *cred;
208
209 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
210 if (cred->num_req_conn_capab)
211 return 1;
212 }
213 return 0;
214 }
215
216 #endif /* CONFIG_HS20 */
217
218
219 static int additional_roaming_consortiums(struct wpa_bss *bss)
220 {
221 const u8 *ie;
222 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
223 if (ie == NULL || ie[1] == 0)
224 return 0;
225 return ie[2]; /* Number of ANQP OIs */
226 }
227
228
229 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
230 {
231 struct wpa_supplicant *wpa_s = eloop_ctx;
232 interworking_next_anqp_fetch(wpa_s);
233 }
234
235
236 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
237 struct wpa_bss *bss)
238 {
239 struct wpabuf *buf;
240 int ret = 0;
241 int res;
242 u16 info_ids[8];
243 size_t num_info_ids = 0;
244 struct wpabuf *extra = NULL;
245 int all = wpa_s->fetch_all_anqp;
246
247 wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
248 MAC2STR(bss->bssid));
249 wpa_s->interworking_gas_bss = bss;
250
251 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
252 if (all) {
253 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
254 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
255 }
256 if (all || (cred_with_roaming_consortium(wpa_s) &&
257 additional_roaming_consortiums(bss)))
258 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
259 if (all)
260 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
261 if (all || cred_with_nai_realm(wpa_s))
262 info_ids[num_info_ids++] = ANQP_NAI_REALM;
263 if (all || cred_with_3gpp(wpa_s))
264 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
265 if (all || cred_with_domain(wpa_s))
266 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
267 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
268 (u8 *) info_ids, num_info_ids * 2);
269
270 #ifdef CONFIG_HS20
271 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
272 u8 *len_pos;
273
274 extra = wpabuf_alloc(100);
275 if (!extra)
276 return -1;
277
278 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
279 wpabuf_put_be24(extra, OUI_WFA);
280 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
281 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
282 wpabuf_put_u8(extra, 0); /* Reserved */
283 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
284 if (all)
285 wpabuf_put_u8(extra,
286 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
287 if (all || cred_with_min_backhaul(wpa_s))
288 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
289 if (all || cred_with_conn_capab(wpa_s))
290 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
291 if (all)
292 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
293 if (all)
294 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
295 gas_anqp_set_element_len(extra, len_pos);
296 }
297 #endif /* CONFIG_HS20 */
298
299 buf = anqp_build_req(info_ids, num_info_ids, extra);
300 wpabuf_free(extra);
301 if (buf == NULL)
302 return -1;
303
304 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
305 interworking_anqp_resp_cb, wpa_s);
306 if (res < 0) {
307 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
308 wpabuf_free(buf);
309 ret = -1;
310 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
311 NULL);
312 } else
313 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
314 "%u", res);
315
316 return ret;
317 }
318
319
320 struct nai_realm_eap {
321 u8 method;
322 u8 inner_method;
323 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
324 u8 cred_type;
325 u8 tunneled_cred_type;
326 };
327
328 struct nai_realm {
329 u8 encoding;
330 char *realm;
331 u8 eap_count;
332 struct nai_realm_eap *eap;
333 };
334
335
336 static void nai_realm_free(struct nai_realm *realms, u16 count)
337 {
338 u16 i;
339
340 if (realms == NULL)
341 return;
342 for (i = 0; i < count; i++) {
343 os_free(realms[i].eap);
344 os_free(realms[i].realm);
345 }
346 os_free(realms);
347 }
348
349
350 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
351 const u8 *end)
352 {
353 u8 elen, auth_count, a;
354 const u8 *e_end;
355
356 if (pos + 3 > end) {
357 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
358 return NULL;
359 }
360
361 elen = *pos++;
362 if (pos + elen > end || elen < 2) {
363 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
364 return NULL;
365 }
366 e_end = pos + elen;
367 e->method = *pos++;
368 auth_count = *pos++;
369 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
370 elen, e->method, auth_count);
371
372 for (a = 0; a < auth_count; a++) {
373 u8 id, len;
374
375 if (pos + 2 > end || pos + 2 + pos[1] > end) {
376 wpa_printf(MSG_DEBUG, "No room for Authentication "
377 "Parameter subfield");
378 return NULL;
379 }
380
381 id = *pos++;
382 len = *pos++;
383
384 switch (id) {
385 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
386 if (len < 1)
387 break;
388 e->inner_non_eap = *pos;
389 if (e->method != EAP_TYPE_TTLS)
390 break;
391 switch (*pos) {
392 case NAI_REALM_INNER_NON_EAP_PAP:
393 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
394 break;
395 case NAI_REALM_INNER_NON_EAP_CHAP:
396 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
397 break;
398 case NAI_REALM_INNER_NON_EAP_MSCHAP:
399 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
400 break;
401 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
402 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
403 break;
404 }
405 break;
406 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
407 if (len < 1)
408 break;
409 e->inner_method = *pos;
410 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
411 e->inner_method);
412 break;
413 case NAI_REALM_EAP_AUTH_CRED_TYPE:
414 if (len < 1)
415 break;
416 e->cred_type = *pos;
417 wpa_printf(MSG_DEBUG, "Credential Type: %u",
418 e->cred_type);
419 break;
420 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
421 if (len < 1)
422 break;
423 e->tunneled_cred_type = *pos;
424 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
425 "Type: %u", e->tunneled_cred_type);
426 break;
427 default:
428 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
429 "Parameter: id=%u len=%u", id, len);
430 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
431 "Value", pos, len);
432 break;
433 }
434
435 pos += len;
436 }
437
438 return e_end;
439 }
440
441
442 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
443 const u8 *end)
444 {
445 u16 len;
446 const u8 *f_end;
447 u8 realm_len, e;
448
449 if (end - pos < 4) {
450 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
451 "fixed fields");
452 return NULL;
453 }
454
455 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
456 pos += 2;
457 if (pos + len > end || len < 3) {
458 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
459 "(len=%u; left=%u)",
460 len, (unsigned int) (end - pos));
461 return NULL;
462 }
463 f_end = pos + len;
464
465 r->encoding = *pos++;
466 realm_len = *pos++;
467 if (pos + realm_len > f_end) {
468 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
469 "(len=%u; left=%u)",
470 realm_len, (unsigned int) (f_end - pos));
471 return NULL;
472 }
473 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
474 r->realm = dup_binstr(pos, realm_len);
475 if (r->realm == NULL)
476 return NULL;
477 pos += realm_len;
478
479 if (pos + 1 > f_end) {
480 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
481 return NULL;
482 }
483 r->eap_count = *pos++;
484 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
485 if (pos + r->eap_count * 3 > f_end) {
486 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
487 return NULL;
488 }
489 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
490 if (r->eap == NULL)
491 return NULL;
492
493 for (e = 0; e < r->eap_count; e++) {
494 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
495 if (pos == NULL)
496 return NULL;
497 }
498
499 return f_end;
500 }
501
502
503 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
504 {
505 struct nai_realm *realm;
506 const u8 *pos, *end;
507 u16 i, num;
508
509 if (anqp == NULL || wpabuf_len(anqp) < 2)
510 return NULL;
511
512 pos = wpabuf_head_u8(anqp);
513 end = pos + wpabuf_len(anqp);
514 num = WPA_GET_LE16(pos);
515 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
516 pos += 2;
517
518 if (num * 5 > end - pos) {
519 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
520 "enough data (%u octets) for that many realms",
521 num, (unsigned int) (end - pos));
522 return NULL;
523 }
524
525 realm = os_calloc(num, sizeof(struct nai_realm));
526 if (realm == NULL)
527 return NULL;
528
529 for (i = 0; i < num; i++) {
530 pos = nai_realm_parse_realm(&realm[i], pos, end);
531 if (pos == NULL) {
532 nai_realm_free(realm, num);
533 return NULL;
534 }
535 }
536
537 *count = num;
538 return realm;
539 }
540
541
542 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
543 {
544 char *tmp, *pos, *end;
545 int match = 0;
546
547 if (realm->realm == NULL || home_realm == NULL)
548 return 0;
549
550 if (os_strchr(realm->realm, ';') == NULL)
551 return os_strcasecmp(realm->realm, home_realm) == 0;
552
553 tmp = os_strdup(realm->realm);
554 if (tmp == NULL)
555 return 0;
556
557 pos = tmp;
558 while (*pos) {
559 end = os_strchr(pos, ';');
560 if (end)
561 *end = '\0';
562 if (os_strcasecmp(pos, home_realm) == 0) {
563 match = 1;
564 break;
565 }
566 if (end == NULL)
567 break;
568 pos = end + 1;
569 }
570
571 os_free(tmp);
572
573 return match;
574 }
575
576
577 static int nai_realm_cred_username(struct nai_realm_eap *eap)
578 {
579 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
580 return 0; /* method not supported */
581
582 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
583 eap->method != EAP_TYPE_FAST) {
584 /* Only tunneled methods with username/password supported */
585 return 0;
586 }
587
588 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
589 if (eap->inner_method &&
590 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
591 return 0;
592 if (!eap->inner_method &&
593 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL)
594 return 0;
595 }
596
597 if (eap->method == EAP_TYPE_TTLS) {
598 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
599 return 1; /* Assume TTLS/MSCHAPv2 is used */
600 if (eap->inner_method &&
601 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
602 return 0;
603 if (eap->inner_non_eap &&
604 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
605 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
606 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
607 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
608 return 0;
609 }
610
611 if (eap->inner_method &&
612 eap->inner_method != EAP_TYPE_GTC &&
613 eap->inner_method != EAP_TYPE_MSCHAPV2)
614 return 0;
615
616 return 1;
617 }
618
619
620 static int nai_realm_cred_cert(struct nai_realm_eap *eap)
621 {
622 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
623 return 0; /* method not supported */
624
625 if (eap->method != EAP_TYPE_TLS) {
626 /* Only EAP-TLS supported for credential authentication */
627 return 0;
628 }
629
630 return 1;
631 }
632
633
634 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
635 struct nai_realm *realm)
636 {
637 u8 e;
638
639 if (cred == NULL ||
640 cred->username == NULL ||
641 cred->username[0] == '\0' ||
642 ((cred->password == NULL ||
643 cred->password[0] == '\0') &&
644 (cred->private_key == NULL ||
645 cred->private_key[0] == '\0')))
646 return NULL;
647
648 for (e = 0; e < realm->eap_count; e++) {
649 struct nai_realm_eap *eap = &realm->eap[e];
650 if (cred->password && cred->password[0] &&
651 nai_realm_cred_username(eap))
652 return eap;
653 if (cred->private_key && cred->private_key[0] &&
654 nai_realm_cred_cert(eap))
655 return eap;
656 }
657
658 return NULL;
659 }
660
661
662 #ifdef INTERWORKING_3GPP
663
664 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
665 {
666 u8 plmn[3], plmn2[3];
667 const u8 *pos, *end;
668 u8 udhl;
669
670 /*
671 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
672 * operator is allowed to include only two digits of the MNC, so allow
673 * matches based on both two and three digit MNC assumptions. Since some
674 * SIM/USIM cards may not expose MNC length conveniently, we may be
675 * provided the default MNC length 3 here and as such, checking with MNC
676 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
677 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
678 * with otherwise matching values would not be good idea in general, so
679 * this should not result in selecting incorrect networks.
680 */
681 /* Match with 3 digit MNC */
682 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
683 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
684 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
685 /* Match with 2 digit MNC */
686 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
687 plmn2[1] = (imsi[2] - '0') | 0xf0;
688 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
689
690 if (anqp == NULL)
691 return 0;
692 pos = wpabuf_head_u8(anqp);
693 end = pos + wpabuf_len(anqp);
694 if (pos + 2 > end)
695 return 0;
696 if (*pos != 0) {
697 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
698 return 0;
699 }
700 pos++;
701 udhl = *pos++;
702 if (pos + udhl > end) {
703 wpa_printf(MSG_DEBUG, "Invalid UDHL");
704 return 0;
705 }
706 end = pos + udhl;
707
708 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
709 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
710 imsi, mnc_len);
711
712 while (pos + 2 <= end) {
713 u8 iei, len;
714 const u8 *l_end;
715 iei = *pos++;
716 len = *pos++ & 0x7f;
717 if (pos + len > end)
718 break;
719 l_end = pos + len;
720
721 if (iei == 0 && len > 0) {
722 /* PLMN List */
723 u8 num, i;
724 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
725 pos, len);
726 num = *pos++;
727 for (i = 0; i < num; i++) {
728 if (pos + 3 > l_end)
729 break;
730 if (os_memcmp(pos, plmn, 3) == 0 ||
731 os_memcmp(pos, plmn2, 3) == 0)
732 return 1; /* Found matching PLMN */
733 pos += 3;
734 }
735 } else {
736 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
737 pos, len);
738 }
739
740 pos = l_end;
741 }
742
743 return 0;
744 }
745
746
747 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
748 size_t mnc_len, char prefix)
749 {
750 const char *sep, *msin;
751 char *end, *pos;
752 size_t msin_len, plmn_len;
753
754 /*
755 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
756 * Root NAI:
757 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
758 * <MNC> is zero-padded to three digits in case two-digit MNC is used
759 */
760
761 if (imsi == NULL || os_strlen(imsi) > 16) {
762 wpa_printf(MSG_DEBUG, "No valid IMSI available");
763 return -1;
764 }
765 sep = os_strchr(imsi, '-');
766 if (sep) {
767 plmn_len = sep - imsi;
768 msin = sep + 1;
769 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
770 plmn_len = 3 + mnc_len;
771 msin = imsi + plmn_len;
772 } else
773 return -1;
774 if (plmn_len != 5 && plmn_len != 6)
775 return -1;
776 msin_len = os_strlen(msin);
777
778 pos = nai;
779 end = nai + nai_len;
780 if (prefix)
781 *pos++ = prefix;
782 os_memcpy(pos, imsi, plmn_len);
783 pos += plmn_len;
784 os_memcpy(pos, msin, msin_len);
785 pos += msin_len;
786 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
787 if (plmn_len == 5) {
788 *pos++ = '0';
789 *pos++ = imsi[3];
790 *pos++ = imsi[4];
791 } else {
792 *pos++ = imsi[3];
793 *pos++ = imsi[4];
794 *pos++ = imsi[5];
795 }
796 pos += os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
797 imsi[0], imsi[1], imsi[2]);
798
799 return 0;
800 }
801
802
803 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
804 {
805 char nai[100];
806 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
807 return -1;
808 return wpa_config_set_quoted(ssid, "identity", nai);
809 }
810
811 #endif /* INTERWORKING_3GPP */
812
813
814 static int already_connected(struct wpa_supplicant *wpa_s,
815 struct wpa_cred *cred, struct wpa_bss *bss)
816 {
817 struct wpa_ssid *ssid;
818
819 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
820 return 0;
821
822 ssid = wpa_s->current_ssid;
823 if (ssid->parent_cred != cred)
824 return 0;
825
826 if (ssid->ssid_len != bss->ssid_len ||
827 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
828 return 0;
829
830 return 1;
831 }
832
833
834 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
835 struct wpa_cred *cred,
836 struct wpa_bss *bss)
837 {
838 struct wpa_ssid *ssid;
839
840 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
841 if (ssid->parent_cred != cred)
842 continue;
843 if (ssid->ssid_len != bss->ssid_len ||
844 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
845 continue;
846
847 break;
848 }
849
850 if (ssid == NULL)
851 return;
852
853 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
854
855 if (ssid == wpa_s->current_ssid) {
856 wpa_sm_set_config(wpa_s->wpa, NULL);
857 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
858 wpa_supplicant_deauthenticate(wpa_s,
859 WLAN_REASON_DEAUTH_LEAVING);
860 }
861
862 wpas_notify_network_removed(wpa_s, ssid);
863 wpa_config_remove_network(wpa_s->conf, ssid->id);
864 }
865
866
867 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
868 struct wpa_ssid *ssid)
869 {
870 if (wpa_config_set(ssid, "key_mgmt",
871 wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
872 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP", 0) < 0)
873 return -1;
874 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
875 return -1;
876 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
877 return -1;
878 return 0;
879 }
880
881
882 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
883 struct wpa_cred *cred,
884 struct wpa_bss *bss)
885 {
886 #ifdef INTERWORKING_3GPP
887 struct wpa_ssid *ssid;
888 int eap_type;
889 int res;
890 char prefix;
891
892 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
893 return -1;
894
895 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
896 MAC2STR(bss->bssid));
897
898 if (already_connected(wpa_s, cred, bss)) {
899 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
900 MAC2STR(bss->bssid));
901 return 0;
902 }
903
904 remove_duplicate_network(wpa_s, cred, bss);
905
906 ssid = wpa_config_add_network(wpa_s->conf);
907 if (ssid == NULL)
908 return -1;
909 ssid->parent_cred = cred;
910
911 wpas_notify_network_added(wpa_s, ssid);
912 wpa_config_set_network_defaults(ssid);
913 ssid->priority = cred->priority;
914 ssid->temporary = 1;
915 ssid->ssid = os_zalloc(bss->ssid_len + 1);
916 if (ssid->ssid == NULL)
917 goto fail;
918 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
919 ssid->ssid_len = bss->ssid_len;
920
921 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
922 goto fail;
923
924 eap_type = EAP_TYPE_SIM;
925 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
926 eap_type = EAP_TYPE_AKA;
927 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
928 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
929 cred->eap_method[0].method == EAP_TYPE_AKA ||
930 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
931 eap_type = cred->eap_method[0].method;
932 }
933
934 switch (eap_type) {
935 case EAP_TYPE_SIM:
936 prefix = '1';
937 res = wpa_config_set(ssid, "eap", "SIM", 0);
938 break;
939 case EAP_TYPE_AKA:
940 prefix = '0';
941 res = wpa_config_set(ssid, "eap", "AKA", 0);
942 break;
943 case EAP_TYPE_AKA_PRIME:
944 prefix = '6';
945 res = wpa_config_set(ssid, "eap", "AKA'", 0);
946 break;
947 default:
948 res = -1;
949 break;
950 }
951 if (res < 0) {
952 wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
953 eap_type);
954 goto fail;
955 }
956
957 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
958 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
959 goto fail;
960 }
961
962 if (cred->milenage && cred->milenage[0]) {
963 if (wpa_config_set_quoted(ssid, "password",
964 cred->milenage) < 0)
965 goto fail;
966 } else if (cred->pcsc) {
967 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
968 goto fail;
969 if (wpa_s->conf->pcsc_pin &&
970 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
971 < 0)
972 goto fail;
973 }
974
975 if (cred->password && cred->password[0] &&
976 wpa_config_set_quoted(ssid, "password", cred->password) < 0)
977 goto fail;
978
979 wpa_s->next_ssid = ssid;
980 wpa_config_update_prio_list(wpa_s->conf);
981 interworking_reconnect(wpa_s);
982
983 return 0;
984
985 fail:
986 wpas_notify_network_removed(wpa_s, ssid);
987 wpa_config_remove_network(wpa_s->conf, ssid->id);
988 #endif /* INTERWORKING_3GPP */
989 return -1;
990 }
991
992
993 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
994 size_t rc_len)
995 {
996 const u8 *pos, *end;
997 u8 lens;
998
999 if (ie == NULL)
1000 return 0;
1001
1002 pos = ie + 2;
1003 end = ie + 2 + ie[1];
1004
1005 /* Roaming Consortium element:
1006 * Number of ANQP OIs
1007 * OI #1 and #2 lengths
1008 * OI #1, [OI #2], [OI #3]
1009 */
1010
1011 if (pos + 2 > end)
1012 return 0;
1013
1014 pos++; /* skip Number of ANQP OIs */
1015 lens = *pos++;
1016 if (pos + (lens & 0x0f) + (lens >> 4) > end)
1017 return 0;
1018
1019 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1020 return 1;
1021 pos += lens & 0x0f;
1022
1023 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1024 return 1;
1025 pos += lens >> 4;
1026
1027 if (pos < end && (size_t) (end - pos) == rc_len &&
1028 os_memcmp(pos, rc_id, rc_len) == 0)
1029 return 1;
1030
1031 return 0;
1032 }
1033
1034
1035 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1036 const u8 *rc_id, size_t rc_len)
1037 {
1038 const u8 *pos, *end;
1039 u8 len;
1040
1041 if (anqp == NULL)
1042 return 0;
1043
1044 pos = wpabuf_head(anqp);
1045 end = pos + wpabuf_len(anqp);
1046
1047 /* Set of <OI Length, OI> duples */
1048 while (pos < end) {
1049 len = *pos++;
1050 if (pos + len > end)
1051 break;
1052 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1053 return 1;
1054 pos += len;
1055 }
1056
1057 return 0;
1058 }
1059
1060
1061 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1062 const u8 *rc_id, size_t rc_len)
1063 {
1064 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1065 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1066 }
1067
1068
1069 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1070 {
1071 const u8 *ie;
1072
1073 if (cred->required_roaming_consortium_len == 0)
1074 return 0;
1075
1076 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1077
1078 if (ie == NULL &&
1079 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1080 return 1;
1081
1082 return !roaming_consortium_match(ie,
1083 bss->anqp ?
1084 bss->anqp->roaming_consortium : NULL,
1085 cred->required_roaming_consortium,
1086 cred->required_roaming_consortium_len);
1087 }
1088
1089
1090 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1091 {
1092 size_t i;
1093
1094 if (!cred->excluded_ssid)
1095 return 0;
1096
1097 for (i = 0; i < cred->num_excluded_ssid; i++) {
1098 struct excluded_ssid *e = &cred->excluded_ssid[i];
1099 if (bss->ssid_len == e->ssid_len &&
1100 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1101 return 1;
1102 }
1103
1104 return 0;
1105 }
1106
1107
1108 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1109 struct wpa_cred *cred, struct wpa_bss *bss)
1110 {
1111 int res;
1112 unsigned int dl_bandwidth, ul_bandwidth;
1113 const u8 *wan;
1114 u8 wan_info, dl_load, ul_load;
1115 u16 lmd;
1116 u32 ul_speed, dl_speed;
1117
1118 if (!cred->min_dl_bandwidth_home &&
1119 !cred->min_ul_bandwidth_home &&
1120 !cred->min_dl_bandwidth_roaming &&
1121 !cred->min_ul_bandwidth_roaming)
1122 return 0; /* No bandwidth constraint specified */
1123
1124 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1125 return 0; /* No WAN Metrics known - ignore constraint */
1126
1127 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1128 wan_info = wan[0];
1129 if (wan_info & BIT(3))
1130 return 1; /* WAN link at capacity */
1131 lmd = WPA_GET_LE16(wan + 11);
1132 if (lmd == 0)
1133 return 0; /* Downlink/Uplink Load was not measured */
1134 dl_speed = WPA_GET_LE32(wan + 1);
1135 ul_speed = WPA_GET_LE32(wan + 5);
1136 dl_load = wan[9];
1137 ul_load = wan[10];
1138
1139 if (dl_speed >= 0xffffff)
1140 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1141 else
1142 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1143
1144 if (ul_speed >= 0xffffff)
1145 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1146 else
1147 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1148
1149 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1150 bss->anqp->domain_name : NULL);
1151 if (res > 0) {
1152 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1153 return 1;
1154 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1155 return 1;
1156 } else {
1157 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1158 return 1;
1159 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1160 return 1;
1161 }
1162
1163 return 0;
1164 }
1165
1166
1167 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1168 struct wpa_cred *cred, struct wpa_bss *bss)
1169 {
1170 const u8 *ie;
1171 int res;
1172
1173 if (!cred->max_bss_load)
1174 return 0; /* No BSS Load constraint specified */
1175
1176 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1177 if (ie == NULL || ie[1] < 3)
1178 return 0; /* No BSS Load advertised */
1179
1180 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1181 bss->anqp->domain_name : NULL);
1182 if (res <= 0)
1183 return 0; /* Not a home network */
1184
1185 return ie[4] > cred->max_bss_load;
1186 }
1187
1188
1189 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1190 {
1191 while (pos + 4 <= end) {
1192 if (pos[0] == proto && pos[3] == 1 /* Open */)
1193 return 1;
1194 pos += 4;
1195 }
1196
1197 return 0;
1198 }
1199
1200
1201 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1202 u16 port)
1203 {
1204 while (pos + 4 <= end) {
1205 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1206 pos[3] == 1 /* Open */)
1207 return 1;
1208 pos += 4;
1209 }
1210
1211 return 0;
1212 }
1213
1214
1215 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1216 struct wpa_cred *cred, struct wpa_bss *bss)
1217 {
1218 int res;
1219 const u8 *capab, *end;
1220 unsigned int i, j;
1221 int *ports;
1222
1223 if (!cred->num_req_conn_capab)
1224 return 0; /* No connection capability constraint specified */
1225
1226 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1227 return 0; /* No Connection Capability known - ignore constraint
1228 */
1229
1230 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1231 bss->anqp->domain_name : NULL);
1232 if (res > 0)
1233 return 0; /* No constraint in home network */
1234
1235 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1236 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1237
1238 for (i = 0; i < cred->num_req_conn_capab; i++) {
1239 ports = cred->req_conn_capab_port[i];
1240 if (!ports) {
1241 if (!has_proto_match(capab, end,
1242 cred->req_conn_capab_proto[i]))
1243 return 1;
1244 } else {
1245 for (j = 0; ports[j] > -1; j++) {
1246 if (!has_proto_port_match(
1247 capab, end,
1248 cred->req_conn_capab_proto[i],
1249 ports[j]))
1250 return 1;
1251 }
1252 }
1253 }
1254
1255 return 0;
1256 }
1257
1258
1259 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1260 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1261 int *excluded)
1262 {
1263 struct wpa_cred *cred, *selected = NULL;
1264 const u8 *ie;
1265 int is_excluded = 0;
1266
1267 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1268
1269 if (ie == NULL &&
1270 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1271 return NULL;
1272
1273 if (wpa_s->conf->cred == NULL)
1274 return NULL;
1275
1276 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1277 if (cred->roaming_consortium_len == 0)
1278 continue;
1279
1280 if (!roaming_consortium_match(ie,
1281 bss->anqp ?
1282 bss->anqp->roaming_consortium :
1283 NULL,
1284 cred->roaming_consortium,
1285 cred->roaming_consortium_len))
1286 continue;
1287
1288 if (cred_no_required_oi_match(cred, bss))
1289 continue;
1290 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1291 continue;
1292 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1293 continue;
1294 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1295 continue;
1296 if (cred_excluded_ssid(cred, bss)) {
1297 if (excluded == NULL)
1298 continue;
1299 if (selected == NULL) {
1300 selected = cred;
1301 is_excluded = 1;
1302 }
1303 } else {
1304 if (selected == NULL || is_excluded ||
1305 cred_prio_cmp(selected, cred) < 0) {
1306 selected = cred;
1307 is_excluded = 0;
1308 }
1309 }
1310 }
1311
1312 if (excluded)
1313 *excluded = is_excluded;
1314
1315 return selected;
1316 }
1317
1318
1319 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1320 struct wpa_cred *cred, int ttls)
1321 {
1322 if (cred->eap_method) {
1323 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1324 cred->eap_method->method == EAP_TYPE_TTLS;
1325
1326 os_free(ssid->eap.eap_methods);
1327 ssid->eap.eap_methods =
1328 os_malloc(sizeof(struct eap_method_type) * 2);
1329 if (ssid->eap.eap_methods == NULL)
1330 return -1;
1331 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1332 sizeof(*cred->eap_method));
1333 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1334 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1335 }
1336
1337 if (ttls && cred->username && cred->username[0]) {
1338 const char *pos;
1339 char *anon;
1340 /* Use anonymous NAI in Phase 1 */
1341 pos = os_strchr(cred->username, '@');
1342 if (pos) {
1343 size_t buflen = 9 + os_strlen(pos) + 1;
1344 anon = os_malloc(buflen);
1345 if (anon == NULL)
1346 return -1;
1347 os_snprintf(anon, buflen, "anonymous%s", pos);
1348 } else if (cred->realm) {
1349 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1350 anon = os_malloc(buflen);
1351 if (anon == NULL)
1352 return -1;
1353 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1354 } else {
1355 anon = os_strdup("anonymous");
1356 if (anon == NULL)
1357 return -1;
1358 }
1359 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1360 0) {
1361 os_free(anon);
1362 return -1;
1363 }
1364 os_free(anon);
1365 }
1366
1367 if (cred->username && cred->username[0] &&
1368 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1369 return -1;
1370
1371 if (cred->password && cred->password[0]) {
1372 if (cred->ext_password &&
1373 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1374 return -1;
1375 if (!cred->ext_password &&
1376 wpa_config_set_quoted(ssid, "password", cred->password) <
1377 0)
1378 return -1;
1379 }
1380
1381 if (cred->client_cert && cred->client_cert[0] &&
1382 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1383 return -1;
1384
1385 #ifdef ANDROID
1386 if (cred->private_key &&
1387 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1388 /* Use OpenSSL engine configuration for Android keystore */
1389 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1390 wpa_config_set_quoted(ssid, "key_id",
1391 cred->private_key + 11) < 0 ||
1392 wpa_config_set(ssid, "engine", "1", 0) < 0)
1393 return -1;
1394 } else
1395 #endif /* ANDROID */
1396 if (cred->private_key && cred->private_key[0] &&
1397 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1398 return -1;
1399
1400 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1401 wpa_config_set_quoted(ssid, "private_key_passwd",
1402 cred->private_key_passwd) < 0)
1403 return -1;
1404
1405 if (cred->phase1) {
1406 os_free(ssid->eap.phase1);
1407 ssid->eap.phase1 = os_strdup(cred->phase1);
1408 }
1409 if (cred->phase2) {
1410 os_free(ssid->eap.phase2);
1411 ssid->eap.phase2 = os_strdup(cred->phase2);
1412 }
1413
1414 if (cred->ca_cert && cred->ca_cert[0] &&
1415 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1416 return -1;
1417
1418 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1419 wpa_config_set_quoted(ssid, "domain_suffix_match",
1420 cred->domain_suffix_match) < 0)
1421 return -1;
1422
1423 ssid->eap.ocsp = cred->ocsp;
1424
1425 return 0;
1426 }
1427
1428
1429 static int interworking_connect_roaming_consortium(
1430 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1431 struct wpa_bss *bss)
1432 {
1433 struct wpa_ssid *ssid;
1434
1435 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1436 "roaming consortium match", MAC2STR(bss->bssid));
1437
1438 if (already_connected(wpa_s, cred, bss)) {
1439 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1440 MAC2STR(bss->bssid));
1441 return 0;
1442 }
1443
1444 remove_duplicate_network(wpa_s, cred, bss);
1445
1446 ssid = wpa_config_add_network(wpa_s->conf);
1447 if (ssid == NULL)
1448 return -1;
1449 ssid->parent_cred = cred;
1450 wpas_notify_network_added(wpa_s, ssid);
1451 wpa_config_set_network_defaults(ssid);
1452 ssid->priority = cred->priority;
1453 ssid->temporary = 1;
1454 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1455 if (ssid->ssid == NULL)
1456 goto fail;
1457 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1458 ssid->ssid_len = bss->ssid_len;
1459
1460 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1461 goto fail;
1462
1463 if (cred->eap_method == NULL) {
1464 wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1465 "credential using roaming consortium");
1466 goto fail;
1467 }
1468
1469 if (interworking_set_eap_params(
1470 ssid, cred,
1471 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1472 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1473 goto fail;
1474
1475 wpa_s->next_ssid = ssid;
1476 wpa_config_update_prio_list(wpa_s->conf);
1477 interworking_reconnect(wpa_s);
1478
1479 return 0;
1480
1481 fail:
1482 wpas_notify_network_removed(wpa_s, ssid);
1483 wpa_config_remove_network(wpa_s->conf, ssid->id);
1484 return -1;
1485 }
1486
1487
1488 static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1489 struct wpa_bss *bss, int allow_excluded)
1490 {
1491 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1492 struct wpa_ssid *ssid;
1493 struct nai_realm *realm;
1494 struct nai_realm_eap *eap = NULL;
1495 u16 count, i;
1496 char buf[100];
1497 int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1498
1499 if (wpa_s->conf->cred == NULL || bss == NULL)
1500 return -1;
1501 if (disallowed_bssid(wpa_s, bss->bssid) ||
1502 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1503 wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS "
1504 MACSTR, MAC2STR(bss->bssid));
1505 return -1;
1506 }
1507
1508 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1509 " for connection (allow_excluded=%d)",
1510 MAC2STR(bss->bssid), allow_excluded);
1511
1512 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1513 /*
1514 * We currently support only HS 2.0 networks and those are
1515 * required to use WPA2-Enterprise.
1516 */
1517 wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1518 "RSN");
1519 return -1;
1520 }
1521
1522 cred_rc = interworking_credentials_available_roaming_consortium(
1523 wpa_s, bss, 0, excl);
1524 if (cred_rc) {
1525 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1526 "consortium matching credential priority %d "
1527 "sp_priority %d",
1528 cred_rc->priority, cred_rc->sp_priority);
1529 if (allow_excluded && excl && !(*excl))
1530 excl = NULL;
1531 }
1532
1533 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1534 if (cred) {
1535 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list "
1536 "matching credential priority %d sp_priority %d",
1537 cred->priority, cred->sp_priority);
1538 if (allow_excluded && excl && !(*excl))
1539 excl = NULL;
1540 }
1541
1542 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1543 excl);
1544 if (cred_3gpp) {
1545 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching "
1546 "credential priority %d sp_priority %d",
1547 cred_3gpp->priority, cred_3gpp->sp_priority);
1548 if (allow_excluded && excl && !(*excl))
1549 excl = NULL;
1550 }
1551
1552 if (!cred_rc && !cred && !cred_3gpp) {
1553 wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits");
1554 cred_rc = interworking_credentials_available_roaming_consortium(
1555 wpa_s, bss, 1, excl);
1556 if (cred_rc) {
1557 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1558 "consortium matching credential priority %d "
1559 "sp_priority %d (ignore BW)",
1560 cred_rc->priority, cred_rc->sp_priority);
1561 if (allow_excluded && excl && !(*excl))
1562 excl = NULL;
1563 }
1564
1565 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1566 excl);
1567 if (cred) {
1568 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm "
1569 "list matching credential priority %d "
1570 "sp_priority %d (ignore BW)",
1571 cred->priority, cred->sp_priority);
1572 if (allow_excluded && excl && !(*excl))
1573 excl = NULL;
1574 }
1575
1576 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1577 1, excl);
1578 if (cred_3gpp) {
1579 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP "
1580 "matching credential priority %d "
1581 "sp_priority %d (ignore BW)",
1582 cred_3gpp->priority, cred_3gpp->sp_priority);
1583 if (allow_excluded && excl && !(*excl))
1584 excl = NULL;
1585 }
1586 }
1587
1588 if (cred_rc &&
1589 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1590 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1591 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1592 bss);
1593
1594 if (cred_3gpp &&
1595 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1596 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss);
1597 }
1598
1599 if (cred == NULL) {
1600 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1601 "found for " MACSTR, MAC2STR(bss->bssid));
1602 return -1;
1603 }
1604
1605 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1606 &count);
1607 if (realm == NULL) {
1608 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1609 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1610 return -1;
1611 }
1612
1613 for (i = 0; i < count; i++) {
1614 if (!nai_realm_match(&realm[i], cred->realm))
1615 continue;
1616 eap = nai_realm_find_eap(cred, &realm[i]);
1617 if (eap)
1618 break;
1619 }
1620
1621 if (!eap) {
1622 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1623 "and EAP method found for " MACSTR,
1624 MAC2STR(bss->bssid));
1625 nai_realm_free(realm, count);
1626 return -1;
1627 }
1628
1629 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1630 MAC2STR(bss->bssid));
1631
1632 if (already_connected(wpa_s, cred, bss)) {
1633 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1634 MAC2STR(bss->bssid));
1635 nai_realm_free(realm, count);
1636 return 0;
1637 }
1638
1639 remove_duplicate_network(wpa_s, cred, bss);
1640
1641 ssid = wpa_config_add_network(wpa_s->conf);
1642 if (ssid == NULL) {
1643 nai_realm_free(realm, count);
1644 return -1;
1645 }
1646 ssid->parent_cred = cred;
1647 wpas_notify_network_added(wpa_s, ssid);
1648 wpa_config_set_network_defaults(ssid);
1649 ssid->priority = cred->priority;
1650 ssid->temporary = 1;
1651 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1652 if (ssid->ssid == NULL)
1653 goto fail;
1654 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1655 ssid->ssid_len = bss->ssid_len;
1656
1657 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1658 goto fail;
1659
1660 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1661 eap->method), 0) < 0)
1662 goto fail;
1663
1664 switch (eap->method) {
1665 case EAP_TYPE_TTLS:
1666 if (eap->inner_method) {
1667 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1668 eap_get_name(EAP_VENDOR_IETF,
1669 eap->inner_method));
1670 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1671 goto fail;
1672 break;
1673 }
1674 switch (eap->inner_non_eap) {
1675 case NAI_REALM_INNER_NON_EAP_PAP:
1676 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1677 0)
1678 goto fail;
1679 break;
1680 case NAI_REALM_INNER_NON_EAP_CHAP:
1681 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1682 < 0)
1683 goto fail;
1684 break;
1685 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1686 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1687 0) < 0)
1688 goto fail;
1689 break;
1690 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1691 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1692 0) < 0)
1693 goto fail;
1694 break;
1695 default:
1696 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1697 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1698 0) < 0)
1699 goto fail;
1700 break;
1701 }
1702 break;
1703 case EAP_TYPE_PEAP:
1704 case EAP_TYPE_FAST:
1705 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1706 0) < 0)
1707 goto fail;
1708 if (wpa_config_set(ssid, "pac_file",
1709 "\"blob://pac_interworking\"", 0) < 0)
1710 goto fail;
1711 os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
1712 eap_get_name(EAP_VENDOR_IETF,
1713 eap->inner_method ?
1714 eap->inner_method :
1715 EAP_TYPE_MSCHAPV2));
1716 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1717 goto fail;
1718 break;
1719 case EAP_TYPE_TLS:
1720 break;
1721 }
1722
1723 if (interworking_set_eap_params(ssid, cred,
1724 eap->method == EAP_TYPE_TTLS) < 0)
1725 goto fail;
1726
1727 nai_realm_free(realm, count);
1728
1729 wpa_s->next_ssid = ssid;
1730 wpa_config_update_prio_list(wpa_s->conf);
1731 interworking_reconnect(wpa_s);
1732
1733 return 0;
1734
1735 fail:
1736 wpas_notify_network_removed(wpa_s, ssid);
1737 wpa_config_remove_network(wpa_s->conf, ssid->id);
1738 nai_realm_free(realm, count);
1739 return -1;
1740 }
1741
1742
1743 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1744 {
1745 return interworking_connect_helper(wpa_s, bss, 1);
1746 }
1747
1748
1749 static struct wpa_cred * interworking_credentials_available_3gpp(
1750 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1751 int *excluded)
1752 {
1753 struct wpa_cred *selected = NULL;
1754 #ifdef INTERWORKING_3GPP
1755 struct wpa_cred *cred;
1756 int ret;
1757 int is_excluded = 0;
1758
1759 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1760 return NULL;
1761
1762 #ifdef CONFIG_EAP_PROXY
1763 if (!wpa_s->imsi[0]) {
1764 size_t len;
1765 wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy");
1766 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1767 wpa_s->imsi,
1768 &len);
1769 if (wpa_s->mnc_len > 0) {
1770 wpa_s->imsi[len] = '\0';
1771 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
1772 wpa_s->imsi, wpa_s->mnc_len);
1773 } else {
1774 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
1775 }
1776 }
1777 #endif /* CONFIG_EAP_PROXY */
1778
1779 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1780 char *sep;
1781 const char *imsi;
1782 int mnc_len;
1783 char imsi_buf[16];
1784 size_t msin_len;
1785
1786 #ifdef PCSC_FUNCS
1787 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
1788 wpa_s->imsi[0]) {
1789 imsi = wpa_s->imsi;
1790 mnc_len = wpa_s->mnc_len;
1791 goto compare;
1792 }
1793 #endif /* PCSC_FUNCS */
1794 #ifdef CONFIG_EAP_PROXY
1795 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1796 imsi = wpa_s->imsi;
1797 mnc_len = wpa_s->mnc_len;
1798 goto compare;
1799 }
1800 #endif /* CONFIG_EAP_PROXY */
1801
1802 if (cred->imsi == NULL || !cred->imsi[0] ||
1803 (!wpa_s->conf->external_sim &&
1804 (cred->milenage == NULL || !cred->milenage[0])))
1805 continue;
1806
1807 sep = os_strchr(cred->imsi, '-');
1808 if (sep == NULL ||
1809 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1810 continue;
1811 mnc_len = sep - cred->imsi - 3;
1812 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1813 sep++;
1814 msin_len = os_strlen(cred->imsi);
1815 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1816 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1817 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1818 imsi_buf[3 + mnc_len + msin_len] = '\0';
1819 imsi = imsi_buf;
1820
1821 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1822 compare:
1823 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1824 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1825 MACSTR, MAC2STR(bss->bssid));
1826 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1827 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1828 if (ret) {
1829 if (cred_no_required_oi_match(cred, bss))
1830 continue;
1831 if (!ignore_bw &&
1832 cred_below_min_backhaul(wpa_s, cred, bss))
1833 continue;
1834 if (!ignore_bw &&
1835 cred_over_max_bss_load(wpa_s, cred, bss))
1836 continue;
1837 if (!ignore_bw &&
1838 cred_conn_capab_missing(wpa_s, cred, bss))
1839 continue;
1840 if (cred_excluded_ssid(cred, bss)) {
1841 if (excluded == NULL)
1842 continue;
1843 if (selected == NULL) {
1844 selected = cred;
1845 is_excluded = 1;
1846 }
1847 } else {
1848 if (selected == NULL || is_excluded ||
1849 cred_prio_cmp(selected, cred) < 0) {
1850 selected = cred;
1851 is_excluded = 0;
1852 }
1853 }
1854 }
1855 }
1856
1857 if (excluded)
1858 *excluded = is_excluded;
1859 #endif /* INTERWORKING_3GPP */
1860 return selected;
1861 }
1862
1863
1864 static struct wpa_cred * interworking_credentials_available_realm(
1865 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1866 int *excluded)
1867 {
1868 struct wpa_cred *cred, *selected = NULL;
1869 struct nai_realm *realm;
1870 u16 count, i;
1871 int is_excluded = 0;
1872
1873 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1874 return NULL;
1875
1876 if (wpa_s->conf->cred == NULL)
1877 return NULL;
1878
1879 wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1880 MACSTR, MAC2STR(bss->bssid));
1881 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1882 if (realm == NULL) {
1883 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1884 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1885 return NULL;
1886 }
1887
1888 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1889 if (cred->realm == NULL)
1890 continue;
1891
1892 for (i = 0; i < count; i++) {
1893 if (!nai_realm_match(&realm[i], cred->realm))
1894 continue;
1895 if (nai_realm_find_eap(cred, &realm[i])) {
1896 if (cred_no_required_oi_match(cred, bss))
1897 continue;
1898 if (!ignore_bw &&
1899 cred_below_min_backhaul(wpa_s, cred, bss))
1900 continue;
1901 if (!ignore_bw &&
1902 cred_over_max_bss_load(wpa_s, cred, bss))
1903 continue;
1904 if (!ignore_bw &&
1905 cred_conn_capab_missing(wpa_s, cred, bss))
1906 continue;
1907 if (cred_excluded_ssid(cred, bss)) {
1908 if (excluded == NULL)
1909 continue;
1910 if (selected == NULL) {
1911 selected = cred;
1912 is_excluded = 1;
1913 }
1914 } else {
1915 if (selected == NULL || is_excluded ||
1916 cred_prio_cmp(selected, cred) < 0)
1917 {
1918 selected = cred;
1919 is_excluded = 0;
1920 }
1921 }
1922 break;
1923 }
1924 }
1925 }
1926
1927 nai_realm_free(realm, count);
1928
1929 if (excluded)
1930 *excluded = is_excluded;
1931
1932 return selected;
1933 }
1934
1935
1936 static struct wpa_cred * interworking_credentials_available_helper(
1937 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1938 int *excluded)
1939 {
1940 struct wpa_cred *cred, *cred2;
1941 int excluded1, excluded2;
1942
1943 if (disallowed_bssid(wpa_s, bss->bssid) ||
1944 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1945 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
1946 MACSTR, MAC2STR(bss->bssid));
1947 return NULL;
1948 }
1949
1950 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
1951 &excluded1);
1952 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
1953 &excluded2);
1954 if (cred && cred2 &&
1955 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1956 cred = cred2;
1957 excluded1 = excluded2;
1958 }
1959 if (!cred) {
1960 cred = cred2;
1961 excluded1 = excluded2;
1962 }
1963
1964 cred2 = interworking_credentials_available_roaming_consortium(
1965 wpa_s, bss, ignore_bw, &excluded2);
1966 if (cred && cred2 &&
1967 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1968 cred = cred2;
1969 excluded1 = excluded2;
1970 }
1971 if (!cred) {
1972 cred = cred2;
1973 excluded1 = excluded2;
1974 }
1975
1976 if (excluded)
1977 *excluded = excluded1;
1978 return cred;
1979 }
1980
1981
1982 static struct wpa_cred * interworking_credentials_available(
1983 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
1984 {
1985 struct wpa_cred *cred;
1986
1987 if (excluded)
1988 *excluded = 0;
1989 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
1990 excluded);
1991 if (cred)
1992 return cred;
1993 return interworking_credentials_available_helper(wpa_s, bss, 1,
1994 excluded);
1995 }
1996
1997
1998 int domain_name_list_contains(struct wpabuf *domain_names,
1999 const char *domain, int exact_match)
2000 {
2001 const u8 *pos, *end;
2002 size_t len;
2003
2004 len = os_strlen(domain);
2005 pos = wpabuf_head(domain_names);
2006 end = pos + wpabuf_len(domain_names);
2007
2008 while (pos + 1 < end) {
2009 if (pos + 1 + pos[0] > end)
2010 break;
2011
2012 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2013 pos + 1, pos[0]);
2014 if (pos[0] == len &&
2015 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2016 return 1;
2017 if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2018 const char *ap = (const char *) (pos + 1);
2019 int offset = pos[0] - len;
2020 if (os_strncasecmp(domain, ap + offset, len) == 0)
2021 return 1;
2022 }
2023
2024 pos += 1 + pos[0];
2025 }
2026
2027 return 0;
2028 }
2029
2030
2031 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2032 struct wpa_cred *cred,
2033 struct wpabuf *domain_names)
2034 {
2035 size_t i;
2036 int ret = -1;
2037 #ifdef INTERWORKING_3GPP
2038 char nai[100], *realm;
2039
2040 char *imsi = NULL;
2041 int mnc_len = 0;
2042 if (cred->imsi)
2043 imsi = cred->imsi;
2044 #ifdef CONFIG_PCSC
2045 else if (cred->pcsc && wpa_s->conf->pcsc_reader &&
2046 wpa_s->scard && wpa_s->imsi[0]) {
2047 imsi = wpa_s->imsi;
2048 mnc_len = wpa_s->mnc_len;
2049 }
2050 #endif /* CONFIG_PCSC */
2051 #ifdef CONFIG_EAP_PROXY
2052 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2053 imsi = wpa_s->imsi;
2054 mnc_len = wpa_s->mnc_len;
2055 }
2056 #endif /* CONFIG_EAP_PROXY */
2057 if (domain_names &&
2058 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2059 realm = os_strchr(nai, '@');
2060 if (realm)
2061 realm++;
2062 wpa_printf(MSG_DEBUG, "Interworking: Search for match "
2063 "with SIM/USIM domain %s", realm);
2064 if (realm &&
2065 domain_name_list_contains(domain_names, realm, 1))
2066 return 1;
2067 if (realm)
2068 ret = 0;
2069 }
2070 #endif /* INTERWORKING_3GPP */
2071
2072 if (domain_names == NULL || cred->domain == NULL)
2073 return ret;
2074
2075 for (i = 0; i < cred->num_domain; i++) {
2076 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
2077 "home SP FQDN %s", cred->domain[i]);
2078 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2079 return 1;
2080 }
2081
2082 return 0;
2083 }
2084
2085
2086 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2087 struct wpabuf *domain_names)
2088 {
2089 struct wpa_cred *cred;
2090
2091 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2092 return -1;
2093
2094 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2095 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2096 if (res)
2097 return res;
2098 }
2099
2100 return 0;
2101 }
2102
2103
2104 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2105 {
2106 struct wpa_bss *bss;
2107 struct wpa_ssid *ssid;
2108
2109 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2110 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2111 if (wpas_network_disabled(wpa_s, ssid) ||
2112 ssid->mode != WPAS_MODE_INFRA)
2113 continue;
2114 if (ssid->ssid_len != bss->ssid_len ||
2115 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2116 0)
2117 continue;
2118 /*
2119 * TODO: Consider more accurate matching of security
2120 * configuration similarly to what is done in events.c
2121 */
2122 return 1;
2123 }
2124 }
2125
2126 return 0;
2127 }
2128
2129
2130 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2131 struct roaming_partner *partner,
2132 struct wpabuf *domain_names)
2133 {
2134 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2135 partner->fqdn, partner->exact_match, partner->priority,
2136 partner->country);
2137 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2138 wpabuf_head(domain_names),
2139 wpabuf_len(domain_names));
2140 if (!domain_name_list_contains(domain_names, partner->fqdn,
2141 partner->exact_match))
2142 return 0;
2143 /* TODO: match Country */
2144 return 1;
2145 }
2146
2147
2148 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2149 struct wpa_bss *bss)
2150 {
2151 size_t i;
2152
2153 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2154 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2155 return 128; /* cannot check preference with domain name */
2156 }
2157
2158 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2159 {
2160 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2161 return 0; /* max preference for home SP network */
2162 }
2163
2164 for (i = 0; i < cred->num_roaming_partner; i++) {
2165 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2166 bss->anqp->domain_name)) {
2167 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2168 cred->roaming_partner[i].priority);
2169 return cred->roaming_partner[i].priority;
2170 }
2171 }
2172
2173 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2174 return 128;
2175 }
2176
2177
2178 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2179 struct wpa_bss *selected,
2180 struct wpa_cred *cred)
2181 {
2182 struct wpa_bss *bss;
2183 u8 best_prio, prio;
2184 struct wpa_cred *cred2;
2185
2186 /*
2187 * Check if any other BSS is operated by a more preferred roaming
2188 * partner.
2189 */
2190
2191 best_prio = roaming_prio(wpa_s, cred, selected);
2192 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2193 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2194 cred->id);
2195
2196 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2197 if (bss == selected)
2198 continue;
2199 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2200 if (!cred2)
2201 continue;
2202 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2203 continue;
2204 prio = roaming_prio(wpa_s, cred2, bss);
2205 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2206 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2207 cred2->id);
2208 if (prio < best_prio) {
2209 int bh1, bh2, load1, load2, conn1, conn2;
2210 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2211 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2212 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2213 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2214 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2215 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2216 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2217 bh1, load1, conn1, bh2, load2, conn2);
2218 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2219 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2220 best_prio = prio;
2221 selected = bss;
2222 }
2223 }
2224 }
2225
2226 return selected;
2227 }
2228
2229
2230 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2231 {
2232 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2233 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2234 unsigned int count = 0;
2235 const char *type;
2236 int res;
2237 struct wpa_cred *cred, *selected_cred = NULL;
2238 struct wpa_cred *selected_home_cred = NULL;
2239 struct wpa_cred *selected2_cred = NULL;
2240 struct wpa_cred *selected2_home_cred = NULL;
2241
2242 wpa_s->network_select = 0;
2243
2244 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2245 wpa_s->auto_select);
2246 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2247 int excluded = 0;
2248 int bh, bss_load, conn_capab;
2249 cred = interworking_credentials_available(wpa_s, bss,
2250 &excluded);
2251 if (!cred)
2252 continue;
2253 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2254 /*
2255 * We currently support only HS 2.0 networks and those
2256 * are required to use WPA2-Enterprise.
2257 */
2258 wpa_printf(MSG_DEBUG, "Interworking: Credential match "
2259 "with " MACSTR " but network does not use "
2260 "RSN", MAC2STR(bss->bssid));
2261 continue;
2262 }
2263 if (!excluded)
2264 count++;
2265 res = interworking_home_sp(wpa_s, bss->anqp ?
2266 bss->anqp->domain_name : NULL);
2267 if (res > 0)
2268 type = "home";
2269 else if (res == 0)
2270 type = "roaming";
2271 else
2272 type = "unknown";
2273 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2274 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2275 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2276 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2277 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2278 MAC2STR(bss->bssid), type,
2279 bh ? " below_min_backhaul=1" : "",
2280 bss_load ? " over_max_bss_load=1" : "",
2281 conn_capab ? " conn_capab_missing=1" : "",
2282 cred->id, cred->priority, cred->sp_priority);
2283 if (excluded)
2284 continue;
2285 if (wpa_s->auto_select ||
2286 (wpa_s->conf->auto_interworking &&
2287 wpa_s->auto_network_select)) {
2288 if (bh || bss_load || conn_capab) {
2289 if (selected2_cred == NULL ||
2290 cred_prio_cmp(cred, selected2_cred) > 0) {
2291 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2292 selected2 = bss;
2293 selected2_cred = cred;
2294 }
2295 if (res > 0 &&
2296 (selected2_home_cred == NULL ||
2297 cred_prio_cmp(cred, selected2_home_cred) >
2298 0)) {
2299 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2300 selected2_home = bss;
2301 selected2_home_cred = cred;
2302 }
2303 } else {
2304 if (selected_cred == NULL ||
2305 cred_prio_cmp(cred, selected_cred) > 0) {
2306 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2307 selected = bss;
2308 selected_cred = cred;
2309 }
2310 if (res > 0 &&
2311 (selected_home_cred == NULL ||
2312 cred_prio_cmp(cred, selected_home_cred) >
2313 0)) {
2314 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2315 selected_home = bss;
2316 selected_home_cred = cred;
2317 }
2318 }
2319 }
2320 }
2321
2322 if (selected_home && selected_home != selected &&
2323 selected_home_cred &&
2324 (selected_cred == NULL ||
2325 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2326 /* Prefer network operated by the Home SP */
2327 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2328 selected = selected_home;
2329 selected_cred = selected_home_cred;
2330 }
2331
2332 if (!selected) {
2333 if (selected2_home) {
2334 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2335 selected = selected2_home;
2336 selected_cred = selected2_home_cred;
2337 } else if (selected2) {
2338 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2339 selected = selected2;
2340 selected_cred = selected2_cred;
2341 }
2342 }
2343
2344 if (count == 0) {
2345 /*
2346 * No matching network was found based on configured
2347 * credentials. Check whether any of the enabled network blocks
2348 * have matching APs.
2349 */
2350 if (interworking_find_network_match(wpa_s)) {
2351 wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
2352 "match for enabled network configurations");
2353 if (wpa_s->auto_select)
2354 interworking_reconnect(wpa_s);
2355 return;
2356 }
2357
2358 if (wpa_s->auto_network_select) {
2359 wpa_printf(MSG_DEBUG, "Interworking: Continue "
2360 "scanning after ANQP fetch");
2361 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2362 0);
2363 return;
2364 }
2365
2366 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2367 "with matching credentials found");
2368 }
2369
2370 if (selected) {
2371 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2372 MAC2STR(selected->bssid));
2373 selected = pick_best_roaming_partner(wpa_s, selected,
2374 selected_cred);
2375 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2376 " (after best roaming partner selection)",
2377 MAC2STR(selected->bssid));
2378 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2379 MAC2STR(selected->bssid));
2380 interworking_connect(wpa_s, selected);
2381 }
2382 }
2383
2384
2385 static struct wpa_bss_anqp *
2386 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2387 {
2388 struct wpa_bss *other;
2389
2390 if (is_zero_ether_addr(bss->hessid))
2391 return NULL; /* Cannot be in the same homegenous ESS */
2392
2393 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2394 if (other == bss)
2395 continue;
2396 if (other->anqp == NULL)
2397 continue;
2398 if (other->anqp->roaming_consortium == NULL &&
2399 other->anqp->nai_realm == NULL &&
2400 other->anqp->anqp_3gpp == NULL &&
2401 other->anqp->domain_name == NULL)
2402 continue;
2403 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2404 continue;
2405 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2406 continue;
2407 if (bss->ssid_len != other->ssid_len ||
2408 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2409 continue;
2410
2411 wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
2412 "already fetched BSSID " MACSTR " and " MACSTR,
2413 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2414 other->anqp->users++;
2415 return other->anqp;
2416 }
2417
2418 return NULL;
2419 }
2420
2421
2422 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2423 {
2424 struct wpa_bss *bss;
2425 int found = 0;
2426 const u8 *ie;
2427
2428 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2429 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2430 wpa_s->fetch_anqp_in_progress,
2431 wpa_s->fetch_osu_icon_in_progress);
2432
2433 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2434 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2435 return;
2436 }
2437
2438 if (wpa_s->fetch_osu_icon_in_progress) {
2439 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2440 hs20_next_osu_icon(wpa_s);
2441 return;
2442 }
2443
2444 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2445 if (!(bss->caps & IEEE80211_CAP_ESS))
2446 continue;
2447 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2448 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2449 continue; /* AP does not support Interworking */
2450 if (disallowed_bssid(wpa_s, bss->bssid) ||
2451 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2452 continue; /* Disallowed BSS */
2453
2454 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2455 if (bss->anqp == NULL) {
2456 bss->anqp = interworking_match_anqp_info(wpa_s,
2457 bss);
2458 if (bss->anqp) {
2459 /* Shared data already fetched */
2460 continue;
2461 }
2462 bss->anqp = wpa_bss_anqp_alloc();
2463 if (bss->anqp == NULL)
2464 break;
2465 }
2466 found++;
2467 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2468 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2469 MACSTR, MAC2STR(bss->bssid));
2470 interworking_anqp_send_req(wpa_s, bss);
2471 break;
2472 }
2473 }
2474
2475 if (found == 0) {
2476 if (wpa_s->fetch_osu_info) {
2477 if (wpa_s->num_prov_found == 0 &&
2478 wpa_s->num_osu_scans < 3) {
2479 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2480 hs20_start_osu_scan(wpa_s);
2481 return;
2482 }
2483 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2484 hs20_osu_icon_fetch(wpa_s);
2485 return;
2486 }
2487 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2488 wpa_s->fetch_anqp_in_progress = 0;
2489 if (wpa_s->network_select)
2490 interworking_select_network(wpa_s);
2491 }
2492 }
2493
2494
2495 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2496 {
2497 struct wpa_bss *bss;
2498
2499 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2500 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2501
2502 wpa_s->fetch_anqp_in_progress = 1;
2503 interworking_next_anqp_fetch(wpa_s);
2504 }
2505
2506
2507 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2508 {
2509 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2510 return 0;
2511
2512 wpa_s->network_select = 0;
2513 wpa_s->fetch_all_anqp = 1;
2514 wpa_s->fetch_osu_info = 0;
2515
2516 interworking_start_fetch_anqp(wpa_s);
2517
2518 return 0;
2519 }
2520
2521
2522 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2523 {
2524 if (!wpa_s->fetch_anqp_in_progress)
2525 return;
2526
2527 wpa_s->fetch_anqp_in_progress = 0;
2528 }
2529
2530
2531 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2532 u16 info_ids[], size_t num_ids)
2533 {
2534 struct wpabuf *buf;
2535 int ret = 0;
2536 int freq;
2537 struct wpa_bss *bss;
2538 int res;
2539
2540 freq = wpa_s->assoc_freq;
2541 bss = wpa_bss_get_bssid(wpa_s, dst);
2542 if (bss) {
2543 wpa_bss_anqp_unshare_alloc(bss);
2544 freq = bss->freq;
2545 }
2546 if (freq <= 0)
2547 return -1;
2548
2549 wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
2550 MAC2STR(dst), (unsigned int) num_ids);
2551
2552 buf = anqp_build_req(info_ids, num_ids, NULL);
2553 if (buf == NULL)
2554 return -1;
2555
2556 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2557 if (res < 0) {
2558 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
2559 wpabuf_free(buf);
2560 ret = -1;
2561 } else
2562 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
2563 "%u", res);
2564
2565 return ret;
2566 }
2567
2568
2569 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2570 struct wpa_bss *bss, const u8 *sa,
2571 u16 info_id,
2572 const u8 *data, size_t slen)
2573 {
2574 const u8 *pos = data;
2575 struct wpa_bss_anqp *anqp = NULL;
2576 #ifdef CONFIG_HS20
2577 u8 type;
2578 #endif /* CONFIG_HS20 */
2579
2580 if (bss)
2581 anqp = bss->anqp;
2582
2583 switch (info_id) {
2584 case ANQP_CAPABILITY_LIST:
2585 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2586 " ANQP Capability list", MAC2STR(sa));
2587 break;
2588 case ANQP_VENUE_NAME:
2589 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2590 " Venue Name", MAC2STR(sa));
2591 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2592 if (anqp) {
2593 wpabuf_free(anqp->venue_name);
2594 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2595 }
2596 break;
2597 case ANQP_NETWORK_AUTH_TYPE:
2598 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2599 " Network Authentication Type information",
2600 MAC2STR(sa));
2601 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2602 "Type", pos, slen);
2603 if (anqp) {
2604 wpabuf_free(anqp->network_auth_type);
2605 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2606 }
2607 break;
2608 case ANQP_ROAMING_CONSORTIUM:
2609 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2610 " Roaming Consortium list", MAC2STR(sa));
2611 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2612 pos, slen);
2613 if (anqp) {
2614 wpabuf_free(anqp->roaming_consortium);
2615 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2616 }
2617 break;
2618 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2619 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2620 " IP Address Type Availability information",
2621 MAC2STR(sa));
2622 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2623 pos, slen);
2624 if (anqp) {
2625 wpabuf_free(anqp->ip_addr_type_availability);
2626 anqp->ip_addr_type_availability =
2627 wpabuf_alloc_copy(pos, slen);
2628 }
2629 break;
2630 case ANQP_NAI_REALM:
2631 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2632 " NAI Realm list", MAC2STR(sa));
2633 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2634 if (anqp) {
2635 wpabuf_free(anqp->nai_realm);
2636 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2637 }
2638 break;
2639 case ANQP_3GPP_CELLULAR_NETWORK:
2640 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2641 " 3GPP Cellular Network information", MAC2STR(sa));
2642 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2643 pos, slen);
2644 if (anqp) {
2645 wpabuf_free(anqp->anqp_3gpp);
2646 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2647 }
2648 break;
2649 case ANQP_DOMAIN_NAME:
2650 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2651 " Domain Name list", MAC2STR(sa));
2652 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2653 if (anqp) {
2654 wpabuf_free(anqp->domain_name);
2655 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2656 }
2657 break;
2658 case ANQP_VENDOR_SPECIFIC:
2659 if (slen < 3)
2660 return;
2661
2662 switch (WPA_GET_BE24(pos)) {
2663 #ifdef CONFIG_HS20
2664 case OUI_WFA:
2665 pos += 3;
2666 slen -= 3;
2667
2668 if (slen < 1)
2669 return;
2670 type = *pos++;
2671 slen--;
2672
2673 switch (type) {
2674 case HS20_ANQP_OUI_TYPE:
2675 hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
2676 slen);
2677 break;
2678 default:
2679 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
2680 "vendor type %u", type);
2681 break;
2682 }
2683 break;
2684 #endif /* CONFIG_HS20 */
2685 default:
2686 wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
2687 "vendor-specific ANQP OUI %06x",
2688 WPA_GET_BE24(pos));
2689 return;
2690 }
2691 break;
2692 default:
2693 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
2694 "%u", info_id);
2695 break;
2696 }
2697 }
2698
2699
2700 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2701 enum gas_query_result result,
2702 const struct wpabuf *adv_proto,
2703 const struct wpabuf *resp, u16 status_code)
2704 {
2705 struct wpa_supplicant *wpa_s = ctx;
2706 const u8 *pos;
2707 const u8 *end;
2708 u16 info_id;
2709 u16 slen;
2710 struct wpa_bss *bss = NULL, *tmp;
2711
2712 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2713 " dialog_token=%u result=%d status_code=%u",
2714 MAC2STR(dst), dialog_token, result, status_code);
2715 if (result != GAS_QUERY_SUCCESS) {
2716 if (wpa_s->fetch_osu_icon_in_progress)
2717 hs20_icon_fetch_failed(wpa_s);
2718 return;
2719 }
2720
2721 pos = wpabuf_head(adv_proto);
2722 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2723 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2724 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
2725 "Protocol in response");
2726 if (wpa_s->fetch_osu_icon_in_progress)
2727 hs20_icon_fetch_failed(wpa_s);
2728 return;
2729 }
2730
2731 /*
2732 * If possible, select the BSS entry based on which BSS entry was used
2733 * for the request. This can help in cases where multiple BSS entries
2734 * may exist for the same AP.
2735 */
2736 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2737 if (tmp == wpa_s->interworking_gas_bss &&
2738 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2739 bss = tmp;
2740 break;
2741 }
2742 }
2743 if (bss == NULL)
2744 bss = wpa_bss_get_bssid(wpa_s, dst);
2745
2746 pos = wpabuf_head(resp);
2747 end = pos + wpabuf_len(resp);
2748
2749 while (pos < end) {
2750 if (pos + 4 > end) {
2751 wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
2752 break;
2753 }
2754 info_id = WPA_GET_LE16(pos);
2755 pos += 2;
2756 slen = WPA_GET_LE16(pos);
2757 pos += 2;
2758 if (pos + slen > end) {
2759 wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
2760 "for Info ID %u", info_id);
2761 break;
2762 }
2763 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2764 slen);
2765 pos += slen;
2766 }
2767
2768 hs20_notify_parse_done(wpa_s);
2769 }
2770
2771
2772 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2773 struct wpa_scan_results *scan_res)
2774 {
2775 wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
2776 "ANQP fetch");
2777 interworking_start_fetch_anqp(wpa_s);
2778 }
2779
2780
2781 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2782 int *freqs)
2783 {
2784 interworking_stop_fetch_anqp(wpa_s);
2785 wpa_s->network_select = 1;
2786 wpa_s->auto_network_select = 0;
2787 wpa_s->auto_select = !!auto_select;
2788 wpa_s->fetch_all_anqp = 0;
2789 wpa_s->fetch_osu_info = 0;
2790 wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
2791 "selection");
2792 wpa_s->scan_res_handler = interworking_scan_res_handler;
2793 wpa_s->normal_scans = 0;
2794 wpa_s->scan_req = MANUAL_SCAN_REQ;
2795 os_free(wpa_s->manual_scan_freqs);
2796 wpa_s->manual_scan_freqs = freqs;
2797 wpa_s->after_wps = 0;
2798 wpa_s->known_wps_freq = 0;
2799 wpa_supplicant_req_scan(wpa_s, 0, 0);
2800
2801 return 0;
2802 }
2803
2804
2805 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2806 enum gas_query_result result,
2807 const struct wpabuf *adv_proto,
2808 const struct wpabuf *resp, u16 status_code)
2809 {
2810 struct wpa_supplicant *wpa_s = ctx;
2811 struct wpabuf *n;
2812
2813 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2814 " dialog_token=%d status_code=%d resp_len=%d",
2815 MAC2STR(addr), dialog_token, status_code,
2816 resp ? (int) wpabuf_len(resp) : -1);
2817 if (!resp)
2818 return;
2819
2820 n = wpabuf_dup(resp);
2821 if (n == NULL)
2822 return;
2823 wpabuf_free(wpa_s->prev_gas_resp);
2824 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2825 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2826 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2827 wpa_s->last_gas_resp = n;
2828 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2829 wpa_s->last_gas_dialog_token = dialog_token;
2830 }
2831
2832
2833 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2834 const struct wpabuf *adv_proto,
2835 const struct wpabuf *query)
2836 {
2837 struct wpabuf *buf;
2838 int ret = 0;
2839 int freq;
2840 struct wpa_bss *bss;
2841 int res;
2842 size_t len;
2843 u8 query_resp_len_limit = 0, pame_bi = 0;
2844
2845 freq = wpa_s->assoc_freq;
2846 bss = wpa_bss_get_bssid(wpa_s, dst);
2847 if (bss)
2848 freq = bss->freq;
2849 if (freq <= 0)
2850 return -1;
2851
2852 wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2853 MAC2STR(dst), freq);
2854 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2855 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2856
2857 len = 3 + wpabuf_len(adv_proto) + 2;
2858 if (query)
2859 len += wpabuf_len(query);
2860 buf = gas_build_initial_req(0, len);
2861 if (buf == NULL)
2862 return -1;
2863
2864 /* Advertisement Protocol IE */
2865 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2866 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2867 wpabuf_put_u8(buf, (query_resp_len_limit & 0x7f) |
2868 (pame_bi ? 0x80 : 0));
2869 wpabuf_put_buf(buf, adv_proto);
2870
2871 /* GAS Query */
2872 if (query) {
2873 wpabuf_put_le16(buf, wpabuf_len(query));
2874 wpabuf_put_buf(buf, query);
2875 } else
2876 wpabuf_put_le16(buf, 0);
2877
2878 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2879 if (res < 0) {
2880 wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2881 wpabuf_free(buf);
2882 ret = -1;
2883 } else
2884 wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "
2885 "%u", res);
2886
2887 return ret;
2888 }
Unnamed repository; edit this file 'description' to name the repository.