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Interworking: Remove unused password setting for SIM credential
[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, *sel_ssid;
818 struct wpa_bss *selected;
819
820 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
821 return 0;
822
823 ssid = wpa_s->current_ssid;
824 if (ssid->parent_cred != cred)
825 return 0;
826
827 if (ssid->ssid_len != bss->ssid_len ||
828 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
829 return 0;
830
831 sel_ssid = NULL;
832 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
833 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
834 return 0; /* higher priority network in scan results */
835
836 return 1;
837 }
838
839
840 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
841 struct wpa_cred *cred,
842 struct wpa_bss *bss)
843 {
844 struct wpa_ssid *ssid;
845
846 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
847 if (ssid->parent_cred != cred)
848 continue;
849 if (ssid->ssid_len != bss->ssid_len ||
850 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
851 continue;
852
853 break;
854 }
855
856 if (ssid == NULL)
857 return;
858
859 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
860
861 if (ssid == wpa_s->current_ssid) {
862 wpa_sm_set_config(wpa_s->wpa, NULL);
863 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
864 wpa_supplicant_deauthenticate(wpa_s,
865 WLAN_REASON_DEAUTH_LEAVING);
866 }
867
868 wpas_notify_network_removed(wpa_s, ssid);
869 wpa_config_remove_network(wpa_s->conf, ssid->id);
870 }
871
872
873 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
874 struct wpa_ssid *ssid)
875 {
876 if (wpa_config_set(ssid, "key_mgmt",
877 wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
878 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP", 0) < 0)
879 return -1;
880 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
881 return -1;
882 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
883 return -1;
884 return 0;
885 }
886
887
888 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
889 struct wpa_cred *cred,
890 struct wpa_bss *bss)
891 {
892 #ifdef INTERWORKING_3GPP
893 struct wpa_ssid *ssid;
894 int eap_type;
895 int res;
896 char prefix;
897
898 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
899 return -1;
900
901 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
902 MAC2STR(bss->bssid));
903
904 if (already_connected(wpa_s, cred, bss)) {
905 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
906 MAC2STR(bss->bssid));
907 return 0;
908 }
909
910 remove_duplicate_network(wpa_s, cred, bss);
911
912 ssid = wpa_config_add_network(wpa_s->conf);
913 if (ssid == NULL)
914 return -1;
915 ssid->parent_cred = cred;
916
917 wpas_notify_network_added(wpa_s, ssid);
918 wpa_config_set_network_defaults(ssid);
919 ssid->priority = cred->priority;
920 ssid->temporary = 1;
921 ssid->ssid = os_zalloc(bss->ssid_len + 1);
922 if (ssid->ssid == NULL)
923 goto fail;
924 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
925 ssid->ssid_len = bss->ssid_len;
926
927 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
928 goto fail;
929
930 eap_type = EAP_TYPE_SIM;
931 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
932 eap_type = EAP_TYPE_AKA;
933 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
934 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
935 cred->eap_method[0].method == EAP_TYPE_AKA ||
936 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
937 eap_type = cred->eap_method[0].method;
938 }
939
940 switch (eap_type) {
941 case EAP_TYPE_SIM:
942 prefix = '1';
943 res = wpa_config_set(ssid, "eap", "SIM", 0);
944 break;
945 case EAP_TYPE_AKA:
946 prefix = '0';
947 res = wpa_config_set(ssid, "eap", "AKA", 0);
948 break;
949 case EAP_TYPE_AKA_PRIME:
950 prefix = '6';
951 res = wpa_config_set(ssid, "eap", "AKA'", 0);
952 break;
953 default:
954 res = -1;
955 break;
956 }
957 if (res < 0) {
958 wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
959 eap_type);
960 goto fail;
961 }
962
963 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
964 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
965 goto fail;
966 }
967
968 if (cred->milenage && cred->milenage[0]) {
969 if (wpa_config_set_quoted(ssid, "password",
970 cred->milenage) < 0)
971 goto fail;
972 } else if (cred->pcsc) {
973 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
974 goto fail;
975 if (wpa_s->conf->pcsc_pin &&
976 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
977 < 0)
978 goto fail;
979 }
980
981 wpa_s->next_ssid = ssid;
982 wpa_config_update_prio_list(wpa_s->conf);
983 interworking_reconnect(wpa_s);
984
985 return 0;
986
987 fail:
988 wpas_notify_network_removed(wpa_s, ssid);
989 wpa_config_remove_network(wpa_s->conf, ssid->id);
990 #endif /* INTERWORKING_3GPP */
991 return -1;
992 }
993
994
995 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
996 size_t rc_len)
997 {
998 const u8 *pos, *end;
999 u8 lens;
1000
1001 if (ie == NULL)
1002 return 0;
1003
1004 pos = ie + 2;
1005 end = ie + 2 + ie[1];
1006
1007 /* Roaming Consortium element:
1008 * Number of ANQP OIs
1009 * OI #1 and #2 lengths
1010 * OI #1, [OI #2], [OI #3]
1011 */
1012
1013 if (pos + 2 > end)
1014 return 0;
1015
1016 pos++; /* skip Number of ANQP OIs */
1017 lens = *pos++;
1018 if (pos + (lens & 0x0f) + (lens >> 4) > end)
1019 return 0;
1020
1021 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1022 return 1;
1023 pos += lens & 0x0f;
1024
1025 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1026 return 1;
1027 pos += lens >> 4;
1028
1029 if (pos < end && (size_t) (end - pos) == rc_len &&
1030 os_memcmp(pos, rc_id, rc_len) == 0)
1031 return 1;
1032
1033 return 0;
1034 }
1035
1036
1037 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1038 const u8 *rc_id, size_t rc_len)
1039 {
1040 const u8 *pos, *end;
1041 u8 len;
1042
1043 if (anqp == NULL)
1044 return 0;
1045
1046 pos = wpabuf_head(anqp);
1047 end = pos + wpabuf_len(anqp);
1048
1049 /* Set of <OI Length, OI> duples */
1050 while (pos < end) {
1051 len = *pos++;
1052 if (pos + len > end)
1053 break;
1054 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1055 return 1;
1056 pos += len;
1057 }
1058
1059 return 0;
1060 }
1061
1062
1063 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1064 const u8 *rc_id, size_t rc_len)
1065 {
1066 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1067 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1068 }
1069
1070
1071 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1072 {
1073 const u8 *ie;
1074
1075 if (cred->required_roaming_consortium_len == 0)
1076 return 0;
1077
1078 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1079
1080 if (ie == NULL &&
1081 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1082 return 1;
1083
1084 return !roaming_consortium_match(ie,
1085 bss->anqp ?
1086 bss->anqp->roaming_consortium : NULL,
1087 cred->required_roaming_consortium,
1088 cred->required_roaming_consortium_len);
1089 }
1090
1091
1092 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1093 {
1094 size_t i;
1095
1096 if (!cred->excluded_ssid)
1097 return 0;
1098
1099 for (i = 0; i < cred->num_excluded_ssid; i++) {
1100 struct excluded_ssid *e = &cred->excluded_ssid[i];
1101 if (bss->ssid_len == e->ssid_len &&
1102 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1103 return 1;
1104 }
1105
1106 return 0;
1107 }
1108
1109
1110 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1111 struct wpa_cred *cred, struct wpa_bss *bss)
1112 {
1113 int res;
1114 unsigned int dl_bandwidth, ul_bandwidth;
1115 const u8 *wan;
1116 u8 wan_info, dl_load, ul_load;
1117 u16 lmd;
1118 u32 ul_speed, dl_speed;
1119
1120 if (!cred->min_dl_bandwidth_home &&
1121 !cred->min_ul_bandwidth_home &&
1122 !cred->min_dl_bandwidth_roaming &&
1123 !cred->min_ul_bandwidth_roaming)
1124 return 0; /* No bandwidth constraint specified */
1125
1126 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1127 return 0; /* No WAN Metrics known - ignore constraint */
1128
1129 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1130 wan_info = wan[0];
1131 if (wan_info & BIT(3))
1132 return 1; /* WAN link at capacity */
1133 lmd = WPA_GET_LE16(wan + 11);
1134 if (lmd == 0)
1135 return 0; /* Downlink/Uplink Load was not measured */
1136 dl_speed = WPA_GET_LE32(wan + 1);
1137 ul_speed = WPA_GET_LE32(wan + 5);
1138 dl_load = wan[9];
1139 ul_load = wan[10];
1140
1141 if (dl_speed >= 0xffffff)
1142 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1143 else
1144 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1145
1146 if (ul_speed >= 0xffffff)
1147 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1148 else
1149 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1150
1151 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1152 bss->anqp->domain_name : NULL);
1153 if (res > 0) {
1154 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1155 return 1;
1156 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1157 return 1;
1158 } else {
1159 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1160 return 1;
1161 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1162 return 1;
1163 }
1164
1165 return 0;
1166 }
1167
1168
1169 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1170 struct wpa_cred *cred, struct wpa_bss *bss)
1171 {
1172 const u8 *ie;
1173 int res;
1174
1175 if (!cred->max_bss_load)
1176 return 0; /* No BSS Load constraint specified */
1177
1178 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1179 if (ie == NULL || ie[1] < 3)
1180 return 0; /* No BSS Load advertised */
1181
1182 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1183 bss->anqp->domain_name : NULL);
1184 if (res <= 0)
1185 return 0; /* Not a home network */
1186
1187 return ie[4] > cred->max_bss_load;
1188 }
1189
1190
1191 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1192 {
1193 while (pos + 4 <= end) {
1194 if (pos[0] == proto && pos[3] == 1 /* Open */)
1195 return 1;
1196 pos += 4;
1197 }
1198
1199 return 0;
1200 }
1201
1202
1203 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1204 u16 port)
1205 {
1206 while (pos + 4 <= end) {
1207 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1208 pos[3] == 1 /* Open */)
1209 return 1;
1210 pos += 4;
1211 }
1212
1213 return 0;
1214 }
1215
1216
1217 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1218 struct wpa_cred *cred, struct wpa_bss *bss)
1219 {
1220 int res;
1221 const u8 *capab, *end;
1222 unsigned int i, j;
1223 int *ports;
1224
1225 if (!cred->num_req_conn_capab)
1226 return 0; /* No connection capability constraint specified */
1227
1228 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1229 return 0; /* No Connection Capability known - ignore constraint
1230 */
1231
1232 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1233 bss->anqp->domain_name : NULL);
1234 if (res > 0)
1235 return 0; /* No constraint in home network */
1236
1237 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1238 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1239
1240 for (i = 0; i < cred->num_req_conn_capab; i++) {
1241 ports = cred->req_conn_capab_port[i];
1242 if (!ports) {
1243 if (!has_proto_match(capab, end,
1244 cred->req_conn_capab_proto[i]))
1245 return 1;
1246 } else {
1247 for (j = 0; ports[j] > -1; j++) {
1248 if (!has_proto_port_match(
1249 capab, end,
1250 cred->req_conn_capab_proto[i],
1251 ports[j]))
1252 return 1;
1253 }
1254 }
1255 }
1256
1257 return 0;
1258 }
1259
1260
1261 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1262 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1263 int *excluded)
1264 {
1265 struct wpa_cred *cred, *selected = NULL;
1266 const u8 *ie;
1267 int is_excluded = 0;
1268
1269 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1270
1271 if (ie == NULL &&
1272 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1273 return NULL;
1274
1275 if (wpa_s->conf->cred == NULL)
1276 return NULL;
1277
1278 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1279 if (cred->roaming_consortium_len == 0)
1280 continue;
1281
1282 if (!roaming_consortium_match(ie,
1283 bss->anqp ?
1284 bss->anqp->roaming_consortium :
1285 NULL,
1286 cred->roaming_consortium,
1287 cred->roaming_consortium_len))
1288 continue;
1289
1290 if (cred_no_required_oi_match(cred, bss))
1291 continue;
1292 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1293 continue;
1294 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1295 continue;
1296 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1297 continue;
1298 if (cred_excluded_ssid(cred, bss)) {
1299 if (excluded == NULL)
1300 continue;
1301 if (selected == NULL) {
1302 selected = cred;
1303 is_excluded = 1;
1304 }
1305 } else {
1306 if (selected == NULL || is_excluded ||
1307 cred_prio_cmp(selected, cred) < 0) {
1308 selected = cred;
1309 is_excluded = 0;
1310 }
1311 }
1312 }
1313
1314 if (excluded)
1315 *excluded = is_excluded;
1316
1317 return selected;
1318 }
1319
1320
1321 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1322 struct wpa_cred *cred, int ttls)
1323 {
1324 if (cred->eap_method) {
1325 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1326 cred->eap_method->method == EAP_TYPE_TTLS;
1327
1328 os_free(ssid->eap.eap_methods);
1329 ssid->eap.eap_methods =
1330 os_malloc(sizeof(struct eap_method_type) * 2);
1331 if (ssid->eap.eap_methods == NULL)
1332 return -1;
1333 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1334 sizeof(*cred->eap_method));
1335 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1336 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1337 }
1338
1339 if (ttls && cred->username && cred->username[0]) {
1340 const char *pos;
1341 char *anon;
1342 /* Use anonymous NAI in Phase 1 */
1343 pos = os_strchr(cred->username, '@');
1344 if (pos) {
1345 size_t buflen = 9 + os_strlen(pos) + 1;
1346 anon = os_malloc(buflen);
1347 if (anon == NULL)
1348 return -1;
1349 os_snprintf(anon, buflen, "anonymous%s", pos);
1350 } else if (cred->realm) {
1351 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1352 anon = os_malloc(buflen);
1353 if (anon == NULL)
1354 return -1;
1355 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1356 } else {
1357 anon = os_strdup("anonymous");
1358 if (anon == NULL)
1359 return -1;
1360 }
1361 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1362 0) {
1363 os_free(anon);
1364 return -1;
1365 }
1366 os_free(anon);
1367 }
1368
1369 if (cred->username && cred->username[0] &&
1370 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1371 return -1;
1372
1373 if (cred->password && cred->password[0]) {
1374 if (cred->ext_password &&
1375 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1376 return -1;
1377 if (!cred->ext_password &&
1378 wpa_config_set_quoted(ssid, "password", cred->password) <
1379 0)
1380 return -1;
1381 }
1382
1383 if (cred->client_cert && cred->client_cert[0] &&
1384 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1385 return -1;
1386
1387 #ifdef ANDROID
1388 if (cred->private_key &&
1389 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1390 /* Use OpenSSL engine configuration for Android keystore */
1391 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1392 wpa_config_set_quoted(ssid, "key_id",
1393 cred->private_key + 11) < 0 ||
1394 wpa_config_set(ssid, "engine", "1", 0) < 0)
1395 return -1;
1396 } else
1397 #endif /* ANDROID */
1398 if (cred->private_key && cred->private_key[0] &&
1399 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1400 return -1;
1401
1402 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1403 wpa_config_set_quoted(ssid, "private_key_passwd",
1404 cred->private_key_passwd) < 0)
1405 return -1;
1406
1407 if (cred->phase1) {
1408 os_free(ssid->eap.phase1);
1409 ssid->eap.phase1 = os_strdup(cred->phase1);
1410 }
1411 if (cred->phase2) {
1412 os_free(ssid->eap.phase2);
1413 ssid->eap.phase2 = os_strdup(cred->phase2);
1414 }
1415
1416 if (cred->ca_cert && cred->ca_cert[0] &&
1417 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1418 return -1;
1419
1420 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1421 wpa_config_set_quoted(ssid, "domain_suffix_match",
1422 cred->domain_suffix_match) < 0)
1423 return -1;
1424
1425 ssid->eap.ocsp = cred->ocsp;
1426
1427 return 0;
1428 }
1429
1430
1431 static int interworking_connect_roaming_consortium(
1432 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1433 struct wpa_bss *bss)
1434 {
1435 struct wpa_ssid *ssid;
1436
1437 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1438 "roaming consortium match", MAC2STR(bss->bssid));
1439
1440 if (already_connected(wpa_s, cred, bss)) {
1441 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1442 MAC2STR(bss->bssid));
1443 return 0;
1444 }
1445
1446 remove_duplicate_network(wpa_s, cred, bss);
1447
1448 ssid = wpa_config_add_network(wpa_s->conf);
1449 if (ssid == NULL)
1450 return -1;
1451 ssid->parent_cred = cred;
1452 wpas_notify_network_added(wpa_s, ssid);
1453 wpa_config_set_network_defaults(ssid);
1454 ssid->priority = cred->priority;
1455 ssid->temporary = 1;
1456 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1457 if (ssid->ssid == NULL)
1458 goto fail;
1459 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1460 ssid->ssid_len = bss->ssid_len;
1461
1462 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1463 goto fail;
1464
1465 if (cred->eap_method == NULL) {
1466 wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1467 "credential using roaming consortium");
1468 goto fail;
1469 }
1470
1471 if (interworking_set_eap_params(
1472 ssid, cred,
1473 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1474 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1475 goto fail;
1476
1477 wpa_s->next_ssid = ssid;
1478 wpa_config_update_prio_list(wpa_s->conf);
1479 interworking_reconnect(wpa_s);
1480
1481 return 0;
1482
1483 fail:
1484 wpas_notify_network_removed(wpa_s, ssid);
1485 wpa_config_remove_network(wpa_s->conf, ssid->id);
1486 return -1;
1487 }
1488
1489
1490 static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1491 struct wpa_bss *bss, int allow_excluded)
1492 {
1493 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1494 struct wpa_ssid *ssid;
1495 struct nai_realm *realm;
1496 struct nai_realm_eap *eap = NULL;
1497 u16 count, i;
1498 char buf[100];
1499 int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1500
1501 if (wpa_s->conf->cred == NULL || bss == NULL)
1502 return -1;
1503 if (disallowed_bssid(wpa_s, bss->bssid) ||
1504 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1505 wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS "
1506 MACSTR, MAC2STR(bss->bssid));
1507 return -1;
1508 }
1509
1510 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1511 " for connection (allow_excluded=%d)",
1512 MAC2STR(bss->bssid), allow_excluded);
1513
1514 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1515 /*
1516 * We currently support only HS 2.0 networks and those are
1517 * required to use WPA2-Enterprise.
1518 */
1519 wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1520 "RSN");
1521 return -1;
1522 }
1523
1524 cred_rc = interworking_credentials_available_roaming_consortium(
1525 wpa_s, bss, 0, excl);
1526 if (cred_rc) {
1527 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1528 "consortium matching credential priority %d "
1529 "sp_priority %d",
1530 cred_rc->priority, cred_rc->sp_priority);
1531 if (allow_excluded && excl && !(*excl))
1532 excl = NULL;
1533 }
1534
1535 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1536 if (cred) {
1537 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list "
1538 "matching credential priority %d sp_priority %d",
1539 cred->priority, cred->sp_priority);
1540 if (allow_excluded && excl && !(*excl))
1541 excl = NULL;
1542 }
1543
1544 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1545 excl);
1546 if (cred_3gpp) {
1547 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching "
1548 "credential priority %d sp_priority %d",
1549 cred_3gpp->priority, cred_3gpp->sp_priority);
1550 if (allow_excluded && excl && !(*excl))
1551 excl = NULL;
1552 }
1553
1554 if (!cred_rc && !cred && !cred_3gpp) {
1555 wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits");
1556 cred_rc = interworking_credentials_available_roaming_consortium(
1557 wpa_s, bss, 1, excl);
1558 if (cred_rc) {
1559 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1560 "consortium matching credential priority %d "
1561 "sp_priority %d (ignore BW)",
1562 cred_rc->priority, cred_rc->sp_priority);
1563 if (allow_excluded && excl && !(*excl))
1564 excl = NULL;
1565 }
1566
1567 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1568 excl);
1569 if (cred) {
1570 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm "
1571 "list matching credential priority %d "
1572 "sp_priority %d (ignore BW)",
1573 cred->priority, cred->sp_priority);
1574 if (allow_excluded && excl && !(*excl))
1575 excl = NULL;
1576 }
1577
1578 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1579 1, excl);
1580 if (cred_3gpp) {
1581 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP "
1582 "matching credential priority %d "
1583 "sp_priority %d (ignore BW)",
1584 cred_3gpp->priority, cred_3gpp->sp_priority);
1585 if (allow_excluded && excl && !(*excl))
1586 excl = NULL;
1587 }
1588 }
1589
1590 if (cred_rc &&
1591 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1592 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1593 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1594 bss);
1595
1596 if (cred_3gpp &&
1597 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1598 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss);
1599 }
1600
1601 if (cred == NULL) {
1602 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1603 "found for " MACSTR, MAC2STR(bss->bssid));
1604 return -1;
1605 }
1606
1607 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1608 &count);
1609 if (realm == NULL) {
1610 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1611 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1612 return -1;
1613 }
1614
1615 for (i = 0; i < count; i++) {
1616 if (!nai_realm_match(&realm[i], cred->realm))
1617 continue;
1618 eap = nai_realm_find_eap(cred, &realm[i]);
1619 if (eap)
1620 break;
1621 }
1622
1623 if (!eap) {
1624 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1625 "and EAP method found for " MACSTR,
1626 MAC2STR(bss->bssid));
1627 nai_realm_free(realm, count);
1628 return -1;
1629 }
1630
1631 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1632 MAC2STR(bss->bssid));
1633
1634 if (already_connected(wpa_s, cred, bss)) {
1635 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1636 MAC2STR(bss->bssid));
1637 nai_realm_free(realm, count);
1638 return 0;
1639 }
1640
1641 remove_duplicate_network(wpa_s, cred, bss);
1642
1643 ssid = wpa_config_add_network(wpa_s->conf);
1644 if (ssid == NULL) {
1645 nai_realm_free(realm, count);
1646 return -1;
1647 }
1648 ssid->parent_cred = cred;
1649 wpas_notify_network_added(wpa_s, ssid);
1650 wpa_config_set_network_defaults(ssid);
1651 ssid->priority = cred->priority;
1652 ssid->temporary = 1;
1653 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1654 if (ssid->ssid == NULL)
1655 goto fail;
1656 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1657 ssid->ssid_len = bss->ssid_len;
1658
1659 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1660 goto fail;
1661
1662 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1663 eap->method), 0) < 0)
1664 goto fail;
1665
1666 switch (eap->method) {
1667 case EAP_TYPE_TTLS:
1668 if (eap->inner_method) {
1669 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1670 eap_get_name(EAP_VENDOR_IETF,
1671 eap->inner_method));
1672 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1673 goto fail;
1674 break;
1675 }
1676 switch (eap->inner_non_eap) {
1677 case NAI_REALM_INNER_NON_EAP_PAP:
1678 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1679 0)
1680 goto fail;
1681 break;
1682 case NAI_REALM_INNER_NON_EAP_CHAP:
1683 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1684 < 0)
1685 goto fail;
1686 break;
1687 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1688 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1689 0) < 0)
1690 goto fail;
1691 break;
1692 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1693 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1694 0) < 0)
1695 goto fail;
1696 break;
1697 default:
1698 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1699 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1700 0) < 0)
1701 goto fail;
1702 break;
1703 }
1704 break;
1705 case EAP_TYPE_PEAP:
1706 case EAP_TYPE_FAST:
1707 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1708 0) < 0)
1709 goto fail;
1710 if (wpa_config_set(ssid, "pac_file",
1711 "\"blob://pac_interworking\"", 0) < 0)
1712 goto fail;
1713 os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
1714 eap_get_name(EAP_VENDOR_IETF,
1715 eap->inner_method ?
1716 eap->inner_method :
1717 EAP_TYPE_MSCHAPV2));
1718 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1719 goto fail;
1720 break;
1721 case EAP_TYPE_TLS:
1722 break;
1723 }
1724
1725 if (interworking_set_eap_params(ssid, cred,
1726 eap->method == EAP_TYPE_TTLS) < 0)
1727 goto fail;
1728
1729 nai_realm_free(realm, count);
1730
1731 wpa_s->next_ssid = ssid;
1732 wpa_config_update_prio_list(wpa_s->conf);
1733 interworking_reconnect(wpa_s);
1734
1735 return 0;
1736
1737 fail:
1738 wpas_notify_network_removed(wpa_s, ssid);
1739 wpa_config_remove_network(wpa_s->conf, ssid->id);
1740 nai_realm_free(realm, count);
1741 return -1;
1742 }
1743
1744
1745 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1746 {
1747 return interworking_connect_helper(wpa_s, bss, 1);
1748 }
1749
1750
1751 static struct wpa_cred * interworking_credentials_available_3gpp(
1752 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1753 int *excluded)
1754 {
1755 struct wpa_cred *selected = NULL;
1756 #ifdef INTERWORKING_3GPP
1757 struct wpa_cred *cred;
1758 int ret;
1759 int is_excluded = 0;
1760
1761 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1762 return NULL;
1763
1764 #ifdef CONFIG_EAP_PROXY
1765 if (!wpa_s->imsi[0]) {
1766 size_t len;
1767 wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy");
1768 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1769 wpa_s->imsi,
1770 &len);
1771 if (wpa_s->mnc_len > 0) {
1772 wpa_s->imsi[len] = '\0';
1773 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
1774 wpa_s->imsi, wpa_s->mnc_len);
1775 } else {
1776 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
1777 }
1778 }
1779 #endif /* CONFIG_EAP_PROXY */
1780
1781 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1782 char *sep;
1783 const char *imsi;
1784 int mnc_len;
1785 char imsi_buf[16];
1786 size_t msin_len;
1787
1788 #ifdef PCSC_FUNCS
1789 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
1790 wpa_s->imsi[0]) {
1791 imsi = wpa_s->imsi;
1792 mnc_len = wpa_s->mnc_len;
1793 goto compare;
1794 }
1795 #endif /* PCSC_FUNCS */
1796 #ifdef CONFIG_EAP_PROXY
1797 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1798 imsi = wpa_s->imsi;
1799 mnc_len = wpa_s->mnc_len;
1800 goto compare;
1801 }
1802 #endif /* CONFIG_EAP_PROXY */
1803
1804 if (cred->imsi == NULL || !cred->imsi[0] ||
1805 (!wpa_s->conf->external_sim &&
1806 (cred->milenage == NULL || !cred->milenage[0])))
1807 continue;
1808
1809 sep = os_strchr(cred->imsi, '-');
1810 if (sep == NULL ||
1811 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1812 continue;
1813 mnc_len = sep - cred->imsi - 3;
1814 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1815 sep++;
1816 msin_len = os_strlen(cred->imsi);
1817 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1818 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1819 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1820 imsi_buf[3 + mnc_len + msin_len] = '\0';
1821 imsi = imsi_buf;
1822
1823 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1824 compare:
1825 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1826 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1827 MACSTR, MAC2STR(bss->bssid));
1828 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1829 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1830 if (ret) {
1831 if (cred_no_required_oi_match(cred, bss))
1832 continue;
1833 if (!ignore_bw &&
1834 cred_below_min_backhaul(wpa_s, cred, bss))
1835 continue;
1836 if (!ignore_bw &&
1837 cred_over_max_bss_load(wpa_s, cred, bss))
1838 continue;
1839 if (!ignore_bw &&
1840 cred_conn_capab_missing(wpa_s, cred, bss))
1841 continue;
1842 if (cred_excluded_ssid(cred, bss)) {
1843 if (excluded == NULL)
1844 continue;
1845 if (selected == NULL) {
1846 selected = cred;
1847 is_excluded = 1;
1848 }
1849 } else {
1850 if (selected == NULL || is_excluded ||
1851 cred_prio_cmp(selected, cred) < 0) {
1852 selected = cred;
1853 is_excluded = 0;
1854 }
1855 }
1856 }
1857 }
1858
1859 if (excluded)
1860 *excluded = is_excluded;
1861 #endif /* INTERWORKING_3GPP */
1862 return selected;
1863 }
1864
1865
1866 static struct wpa_cred * interworking_credentials_available_realm(
1867 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1868 int *excluded)
1869 {
1870 struct wpa_cred *cred, *selected = NULL;
1871 struct nai_realm *realm;
1872 u16 count, i;
1873 int is_excluded = 0;
1874
1875 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1876 return NULL;
1877
1878 if (wpa_s->conf->cred == NULL)
1879 return NULL;
1880
1881 wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1882 MACSTR, MAC2STR(bss->bssid));
1883 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1884 if (realm == NULL) {
1885 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1886 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1887 return NULL;
1888 }
1889
1890 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1891 if (cred->realm == NULL)
1892 continue;
1893
1894 for (i = 0; i < count; i++) {
1895 if (!nai_realm_match(&realm[i], cred->realm))
1896 continue;
1897 if (nai_realm_find_eap(cred, &realm[i])) {
1898 if (cred_no_required_oi_match(cred, bss))
1899 continue;
1900 if (!ignore_bw &&
1901 cred_below_min_backhaul(wpa_s, cred, bss))
1902 continue;
1903 if (!ignore_bw &&
1904 cred_over_max_bss_load(wpa_s, cred, bss))
1905 continue;
1906 if (!ignore_bw &&
1907 cred_conn_capab_missing(wpa_s, cred, bss))
1908 continue;
1909 if (cred_excluded_ssid(cred, bss)) {
1910 if (excluded == NULL)
1911 continue;
1912 if (selected == NULL) {
1913 selected = cred;
1914 is_excluded = 1;
1915 }
1916 } else {
1917 if (selected == NULL || is_excluded ||
1918 cred_prio_cmp(selected, cred) < 0)
1919 {
1920 selected = cred;
1921 is_excluded = 0;
1922 }
1923 }
1924 break;
1925 }
1926 }
1927 }
1928
1929 nai_realm_free(realm, count);
1930
1931 if (excluded)
1932 *excluded = is_excluded;
1933
1934 return selected;
1935 }
1936
1937
1938 static struct wpa_cred * interworking_credentials_available_helper(
1939 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1940 int *excluded)
1941 {
1942 struct wpa_cred *cred, *cred2;
1943 int excluded1, excluded2;
1944
1945 if (disallowed_bssid(wpa_s, bss->bssid) ||
1946 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1947 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
1948 MACSTR, MAC2STR(bss->bssid));
1949 return NULL;
1950 }
1951
1952 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
1953 &excluded1);
1954 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
1955 &excluded2);
1956 if (cred && cred2 &&
1957 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1958 cred = cred2;
1959 excluded1 = excluded2;
1960 }
1961 if (!cred) {
1962 cred = cred2;
1963 excluded1 = excluded2;
1964 }
1965
1966 cred2 = interworking_credentials_available_roaming_consortium(
1967 wpa_s, bss, ignore_bw, &excluded2);
1968 if (cred && cred2 &&
1969 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1970 cred = cred2;
1971 excluded1 = excluded2;
1972 }
1973 if (!cred) {
1974 cred = cred2;
1975 excluded1 = excluded2;
1976 }
1977
1978 if (excluded)
1979 *excluded = excluded1;
1980 return cred;
1981 }
1982
1983
1984 static struct wpa_cred * interworking_credentials_available(
1985 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
1986 {
1987 struct wpa_cred *cred;
1988
1989 if (excluded)
1990 *excluded = 0;
1991 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
1992 excluded);
1993 if (cred)
1994 return cred;
1995 return interworking_credentials_available_helper(wpa_s, bss, 1,
1996 excluded);
1997 }
1998
1999
2000 int domain_name_list_contains(struct wpabuf *domain_names,
2001 const char *domain, int exact_match)
2002 {
2003 const u8 *pos, *end;
2004 size_t len;
2005
2006 len = os_strlen(domain);
2007 pos = wpabuf_head(domain_names);
2008 end = pos + wpabuf_len(domain_names);
2009
2010 while (pos + 1 < end) {
2011 if (pos + 1 + pos[0] > end)
2012 break;
2013
2014 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2015 pos + 1, pos[0]);
2016 if (pos[0] == len &&
2017 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2018 return 1;
2019 if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2020 const char *ap = (const char *) (pos + 1);
2021 int offset = pos[0] - len;
2022 if (os_strncasecmp(domain, ap + offset, len) == 0)
2023 return 1;
2024 }
2025
2026 pos += 1 + pos[0];
2027 }
2028
2029 return 0;
2030 }
2031
2032
2033 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2034 struct wpa_cred *cred,
2035 struct wpabuf *domain_names)
2036 {
2037 size_t i;
2038 int ret = -1;
2039 #ifdef INTERWORKING_3GPP
2040 char nai[100], *realm;
2041
2042 char *imsi = NULL;
2043 int mnc_len = 0;
2044 if (cred->imsi)
2045 imsi = cred->imsi;
2046 #ifdef CONFIG_PCSC
2047 else if (cred->pcsc && wpa_s->conf->pcsc_reader &&
2048 wpa_s->scard && wpa_s->imsi[0]) {
2049 imsi = wpa_s->imsi;
2050 mnc_len = wpa_s->mnc_len;
2051 }
2052 #endif /* CONFIG_PCSC */
2053 #ifdef CONFIG_EAP_PROXY
2054 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2055 imsi = wpa_s->imsi;
2056 mnc_len = wpa_s->mnc_len;
2057 }
2058 #endif /* CONFIG_EAP_PROXY */
2059 if (domain_names &&
2060 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2061 realm = os_strchr(nai, '@');
2062 if (realm)
2063 realm++;
2064 wpa_printf(MSG_DEBUG, "Interworking: Search for match "
2065 "with SIM/USIM domain %s", realm);
2066 if (realm &&
2067 domain_name_list_contains(domain_names, realm, 1))
2068 return 1;
2069 if (realm)
2070 ret = 0;
2071 }
2072 #endif /* INTERWORKING_3GPP */
2073
2074 if (domain_names == NULL || cred->domain == NULL)
2075 return ret;
2076
2077 for (i = 0; i < cred->num_domain; i++) {
2078 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
2079 "home SP FQDN %s", cred->domain[i]);
2080 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2081 return 1;
2082 }
2083
2084 return 0;
2085 }
2086
2087
2088 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2089 struct wpabuf *domain_names)
2090 {
2091 struct wpa_cred *cred;
2092
2093 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2094 return -1;
2095
2096 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2097 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2098 if (res)
2099 return res;
2100 }
2101
2102 return 0;
2103 }
2104
2105
2106 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2107 {
2108 struct wpa_bss *bss;
2109 struct wpa_ssid *ssid;
2110
2111 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2112 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2113 if (wpas_network_disabled(wpa_s, ssid) ||
2114 ssid->mode != WPAS_MODE_INFRA)
2115 continue;
2116 if (ssid->ssid_len != bss->ssid_len ||
2117 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2118 0)
2119 continue;
2120 /*
2121 * TODO: Consider more accurate matching of security
2122 * configuration similarly to what is done in events.c
2123 */
2124 return 1;
2125 }
2126 }
2127
2128 return 0;
2129 }
2130
2131
2132 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2133 struct roaming_partner *partner,
2134 struct wpabuf *domain_names)
2135 {
2136 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2137 partner->fqdn, partner->exact_match, partner->priority,
2138 partner->country);
2139 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2140 wpabuf_head(domain_names),
2141 wpabuf_len(domain_names));
2142 if (!domain_name_list_contains(domain_names, partner->fqdn,
2143 partner->exact_match))
2144 return 0;
2145 /* TODO: match Country */
2146 return 1;
2147 }
2148
2149
2150 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2151 struct wpa_bss *bss)
2152 {
2153 size_t i;
2154
2155 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2156 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2157 return 128; /* cannot check preference with domain name */
2158 }
2159
2160 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2161 {
2162 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2163 return 0; /* max preference for home SP network */
2164 }
2165
2166 for (i = 0; i < cred->num_roaming_partner; i++) {
2167 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2168 bss->anqp->domain_name)) {
2169 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2170 cred->roaming_partner[i].priority);
2171 return cred->roaming_partner[i].priority;
2172 }
2173 }
2174
2175 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2176 return 128;
2177 }
2178
2179
2180 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2181 struct wpa_bss *selected,
2182 struct wpa_cred *cred)
2183 {
2184 struct wpa_bss *bss;
2185 u8 best_prio, prio;
2186 struct wpa_cred *cred2;
2187
2188 /*
2189 * Check if any other BSS is operated by a more preferred roaming
2190 * partner.
2191 */
2192
2193 best_prio = roaming_prio(wpa_s, cred, selected);
2194 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2195 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2196 cred->id);
2197
2198 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2199 if (bss == selected)
2200 continue;
2201 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2202 if (!cred2)
2203 continue;
2204 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2205 continue;
2206 prio = roaming_prio(wpa_s, cred2, bss);
2207 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2208 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2209 cred2->id);
2210 if (prio < best_prio) {
2211 int bh1, bh2, load1, load2, conn1, conn2;
2212 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2213 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2214 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2215 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2216 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2217 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2218 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2219 bh1, load1, conn1, bh2, load2, conn2);
2220 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2221 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2222 best_prio = prio;
2223 selected = bss;
2224 }
2225 }
2226 }
2227
2228 return selected;
2229 }
2230
2231
2232 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2233 {
2234 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2235 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2236 unsigned int count = 0;
2237 const char *type;
2238 int res;
2239 struct wpa_cred *cred, *selected_cred = NULL;
2240 struct wpa_cred *selected_home_cred = NULL;
2241 struct wpa_cred *selected2_cred = NULL;
2242 struct wpa_cred *selected2_home_cred = NULL;
2243
2244 wpa_s->network_select = 0;
2245
2246 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2247 wpa_s->auto_select);
2248 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2249 int excluded = 0;
2250 int bh, bss_load, conn_capab;
2251 cred = interworking_credentials_available(wpa_s, bss,
2252 &excluded);
2253 if (!cred)
2254 continue;
2255 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2256 /*
2257 * We currently support only HS 2.0 networks and those
2258 * are required to use WPA2-Enterprise.
2259 */
2260 wpa_printf(MSG_DEBUG, "Interworking: Credential match "
2261 "with " MACSTR " but network does not use "
2262 "RSN", MAC2STR(bss->bssid));
2263 continue;
2264 }
2265 if (!excluded)
2266 count++;
2267 res = interworking_home_sp(wpa_s, bss->anqp ?
2268 bss->anqp->domain_name : NULL);
2269 if (res > 0)
2270 type = "home";
2271 else if (res == 0)
2272 type = "roaming";
2273 else
2274 type = "unknown";
2275 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2276 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2277 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2278 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2279 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2280 MAC2STR(bss->bssid), type,
2281 bh ? " below_min_backhaul=1" : "",
2282 bss_load ? " over_max_bss_load=1" : "",
2283 conn_capab ? " conn_capab_missing=1" : "",
2284 cred->id, cred->priority, cred->sp_priority);
2285 if (excluded)
2286 continue;
2287 if (wpa_s->auto_select ||
2288 (wpa_s->conf->auto_interworking &&
2289 wpa_s->auto_network_select)) {
2290 if (bh || bss_load || conn_capab) {
2291 if (selected2_cred == NULL ||
2292 cred_prio_cmp(cred, selected2_cred) > 0) {
2293 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2294 selected2 = bss;
2295 selected2_cred = cred;
2296 }
2297 if (res > 0 &&
2298 (selected2_home_cred == NULL ||
2299 cred_prio_cmp(cred, selected2_home_cred) >
2300 0)) {
2301 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2302 selected2_home = bss;
2303 selected2_home_cred = cred;
2304 }
2305 } else {
2306 if (selected_cred == NULL ||
2307 cred_prio_cmp(cred, selected_cred) > 0) {
2308 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2309 selected = bss;
2310 selected_cred = cred;
2311 }
2312 if (res > 0 &&
2313 (selected_home_cred == NULL ||
2314 cred_prio_cmp(cred, selected_home_cred) >
2315 0)) {
2316 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2317 selected_home = bss;
2318 selected_home_cred = cred;
2319 }
2320 }
2321 }
2322 }
2323
2324 if (selected_home && selected_home != selected &&
2325 selected_home_cred &&
2326 (selected_cred == NULL ||
2327 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2328 /* Prefer network operated by the Home SP */
2329 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2330 selected = selected_home;
2331 selected_cred = selected_home_cred;
2332 }
2333
2334 if (!selected) {
2335 if (selected2_home) {
2336 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2337 selected = selected2_home;
2338 selected_cred = selected2_home_cred;
2339 } else if (selected2) {
2340 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2341 selected = selected2;
2342 selected_cred = selected2_cred;
2343 }
2344 }
2345
2346 if (count == 0) {
2347 /*
2348 * No matching network was found based on configured
2349 * credentials. Check whether any of the enabled network blocks
2350 * have matching APs.
2351 */
2352 if (interworking_find_network_match(wpa_s)) {
2353 wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
2354 "match for enabled network configurations");
2355 if (wpa_s->auto_select)
2356 interworking_reconnect(wpa_s);
2357 return;
2358 }
2359
2360 if (wpa_s->auto_network_select) {
2361 wpa_printf(MSG_DEBUG, "Interworking: Continue "
2362 "scanning after ANQP fetch");
2363 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2364 0);
2365 return;
2366 }
2367
2368 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2369 "with matching credentials found");
2370 }
2371
2372 if (selected) {
2373 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2374 MAC2STR(selected->bssid));
2375 selected = pick_best_roaming_partner(wpa_s, selected,
2376 selected_cred);
2377 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2378 " (after best roaming partner selection)",
2379 MAC2STR(selected->bssid));
2380 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2381 MAC2STR(selected->bssid));
2382 interworking_connect(wpa_s, selected);
2383 }
2384 }
2385
2386
2387 static struct wpa_bss_anqp *
2388 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2389 {
2390 struct wpa_bss *other;
2391
2392 if (is_zero_ether_addr(bss->hessid))
2393 return NULL; /* Cannot be in the same homegenous ESS */
2394
2395 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2396 if (other == bss)
2397 continue;
2398 if (other->anqp == NULL)
2399 continue;
2400 if (other->anqp->roaming_consortium == NULL &&
2401 other->anqp->nai_realm == NULL &&
2402 other->anqp->anqp_3gpp == NULL &&
2403 other->anqp->domain_name == NULL)
2404 continue;
2405 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2406 continue;
2407 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2408 continue;
2409 if (bss->ssid_len != other->ssid_len ||
2410 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2411 continue;
2412
2413 wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
2414 "already fetched BSSID " MACSTR " and " MACSTR,
2415 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2416 other->anqp->users++;
2417 return other->anqp;
2418 }
2419
2420 return NULL;
2421 }
2422
2423
2424 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2425 {
2426 struct wpa_bss *bss;
2427 int found = 0;
2428 const u8 *ie;
2429
2430 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2431 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2432 wpa_s->fetch_anqp_in_progress,
2433 wpa_s->fetch_osu_icon_in_progress);
2434
2435 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2436 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2437 return;
2438 }
2439
2440 if (wpa_s->fetch_osu_icon_in_progress) {
2441 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2442 hs20_next_osu_icon(wpa_s);
2443 return;
2444 }
2445
2446 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2447 if (!(bss->caps & IEEE80211_CAP_ESS))
2448 continue;
2449 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2450 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2451 continue; /* AP does not support Interworking */
2452 if (disallowed_bssid(wpa_s, bss->bssid) ||
2453 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2454 continue; /* Disallowed BSS */
2455
2456 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2457 if (bss->anqp == NULL) {
2458 bss->anqp = interworking_match_anqp_info(wpa_s,
2459 bss);
2460 if (bss->anqp) {
2461 /* Shared data already fetched */
2462 continue;
2463 }
2464 bss->anqp = wpa_bss_anqp_alloc();
2465 if (bss->anqp == NULL)
2466 break;
2467 }
2468 found++;
2469 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2470 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2471 MACSTR, MAC2STR(bss->bssid));
2472 interworking_anqp_send_req(wpa_s, bss);
2473 break;
2474 }
2475 }
2476
2477 if (found == 0) {
2478 if (wpa_s->fetch_osu_info) {
2479 if (wpa_s->num_prov_found == 0 &&
2480 wpa_s->num_osu_scans < 3) {
2481 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2482 hs20_start_osu_scan(wpa_s);
2483 return;
2484 }
2485 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2486 hs20_osu_icon_fetch(wpa_s);
2487 return;
2488 }
2489 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2490 wpa_s->fetch_anqp_in_progress = 0;
2491 if (wpa_s->network_select)
2492 interworking_select_network(wpa_s);
2493 }
2494 }
2495
2496
2497 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2498 {
2499 struct wpa_bss *bss;
2500
2501 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2502 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2503
2504 wpa_s->fetch_anqp_in_progress = 1;
2505 interworking_next_anqp_fetch(wpa_s);
2506 }
2507
2508
2509 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2510 {
2511 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2512 return 0;
2513
2514 wpa_s->network_select = 0;
2515 wpa_s->fetch_all_anqp = 1;
2516 wpa_s->fetch_osu_info = 0;
2517
2518 interworking_start_fetch_anqp(wpa_s);
2519
2520 return 0;
2521 }
2522
2523
2524 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2525 {
2526 if (!wpa_s->fetch_anqp_in_progress)
2527 return;
2528
2529 wpa_s->fetch_anqp_in_progress = 0;
2530 }
2531
2532
2533 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2534 u16 info_ids[], size_t num_ids)
2535 {
2536 struct wpabuf *buf;
2537 int ret = 0;
2538 int freq;
2539 struct wpa_bss *bss;
2540 int res;
2541
2542 freq = wpa_s->assoc_freq;
2543 bss = wpa_bss_get_bssid(wpa_s, dst);
2544 if (bss) {
2545 wpa_bss_anqp_unshare_alloc(bss);
2546 freq = bss->freq;
2547 }
2548 if (freq <= 0)
2549 return -1;
2550
2551 wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
2552 MAC2STR(dst), (unsigned int) num_ids);
2553
2554 buf = anqp_build_req(info_ids, num_ids, NULL);
2555 if (buf == NULL)
2556 return -1;
2557
2558 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2559 if (res < 0) {
2560 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
2561 wpabuf_free(buf);
2562 ret = -1;
2563 } else
2564 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
2565 "%u", res);
2566
2567 return ret;
2568 }
2569
2570
2571 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2572 struct wpa_bss *bss, const u8 *sa,
2573 u16 info_id,
2574 const u8 *data, size_t slen)
2575 {
2576 const u8 *pos = data;
2577 struct wpa_bss_anqp *anqp = NULL;
2578 #ifdef CONFIG_HS20
2579 u8 type;
2580 #endif /* CONFIG_HS20 */
2581
2582 if (bss)
2583 anqp = bss->anqp;
2584
2585 switch (info_id) {
2586 case ANQP_CAPABILITY_LIST:
2587 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2588 " ANQP Capability list", MAC2STR(sa));
2589 break;
2590 case ANQP_VENUE_NAME:
2591 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2592 " Venue Name", MAC2STR(sa));
2593 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2594 if (anqp) {
2595 wpabuf_free(anqp->venue_name);
2596 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2597 }
2598 break;
2599 case ANQP_NETWORK_AUTH_TYPE:
2600 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2601 " Network Authentication Type information",
2602 MAC2STR(sa));
2603 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2604 "Type", pos, slen);
2605 if (anqp) {
2606 wpabuf_free(anqp->network_auth_type);
2607 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2608 }
2609 break;
2610 case ANQP_ROAMING_CONSORTIUM:
2611 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2612 " Roaming Consortium list", MAC2STR(sa));
2613 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2614 pos, slen);
2615 if (anqp) {
2616 wpabuf_free(anqp->roaming_consortium);
2617 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2618 }
2619 break;
2620 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2621 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2622 " IP Address Type Availability information",
2623 MAC2STR(sa));
2624 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2625 pos, slen);
2626 if (anqp) {
2627 wpabuf_free(anqp->ip_addr_type_availability);
2628 anqp->ip_addr_type_availability =
2629 wpabuf_alloc_copy(pos, slen);
2630 }
2631 break;
2632 case ANQP_NAI_REALM:
2633 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2634 " NAI Realm list", MAC2STR(sa));
2635 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2636 if (anqp) {
2637 wpabuf_free(anqp->nai_realm);
2638 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2639 }
2640 break;
2641 case ANQP_3GPP_CELLULAR_NETWORK:
2642 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2643 " 3GPP Cellular Network information", MAC2STR(sa));
2644 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2645 pos, slen);
2646 if (anqp) {
2647 wpabuf_free(anqp->anqp_3gpp);
2648 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2649 }
2650 break;
2651 case ANQP_DOMAIN_NAME:
2652 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2653 " Domain Name list", MAC2STR(sa));
2654 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2655 if (anqp) {
2656 wpabuf_free(anqp->domain_name);
2657 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2658 }
2659 break;
2660 case ANQP_VENDOR_SPECIFIC:
2661 if (slen < 3)
2662 return;
2663
2664 switch (WPA_GET_BE24(pos)) {
2665 #ifdef CONFIG_HS20
2666 case OUI_WFA:
2667 pos += 3;
2668 slen -= 3;
2669
2670 if (slen < 1)
2671 return;
2672 type = *pos++;
2673 slen--;
2674
2675 switch (type) {
2676 case HS20_ANQP_OUI_TYPE:
2677 hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
2678 slen);
2679 break;
2680 default:
2681 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
2682 "vendor type %u", type);
2683 break;
2684 }
2685 break;
2686 #endif /* CONFIG_HS20 */
2687 default:
2688 wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
2689 "vendor-specific ANQP OUI %06x",
2690 WPA_GET_BE24(pos));
2691 return;
2692 }
2693 break;
2694 default:
2695 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
2696 "%u", info_id);
2697 break;
2698 }
2699 }
2700
2701
2702 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2703 enum gas_query_result result,
2704 const struct wpabuf *adv_proto,
2705 const struct wpabuf *resp, u16 status_code)
2706 {
2707 struct wpa_supplicant *wpa_s = ctx;
2708 const u8 *pos;
2709 const u8 *end;
2710 u16 info_id;
2711 u16 slen;
2712 struct wpa_bss *bss = NULL, *tmp;
2713
2714 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2715 " dialog_token=%u result=%d status_code=%u",
2716 MAC2STR(dst), dialog_token, result, status_code);
2717 if (result != GAS_QUERY_SUCCESS) {
2718 if (wpa_s->fetch_osu_icon_in_progress)
2719 hs20_icon_fetch_failed(wpa_s);
2720 return;
2721 }
2722
2723 pos = wpabuf_head(adv_proto);
2724 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2725 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2726 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
2727 "Protocol in response");
2728 if (wpa_s->fetch_osu_icon_in_progress)
2729 hs20_icon_fetch_failed(wpa_s);
2730 return;
2731 }
2732
2733 /*
2734 * If possible, select the BSS entry based on which BSS entry was used
2735 * for the request. This can help in cases where multiple BSS entries
2736 * may exist for the same AP.
2737 */
2738 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2739 if (tmp == wpa_s->interworking_gas_bss &&
2740 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2741 bss = tmp;
2742 break;
2743 }
2744 }
2745 if (bss == NULL)
2746 bss = wpa_bss_get_bssid(wpa_s, dst);
2747
2748 pos = wpabuf_head(resp);
2749 end = pos + wpabuf_len(resp);
2750
2751 while (pos < end) {
2752 if (pos + 4 > end) {
2753 wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
2754 break;
2755 }
2756 info_id = WPA_GET_LE16(pos);
2757 pos += 2;
2758 slen = WPA_GET_LE16(pos);
2759 pos += 2;
2760 if (pos + slen > end) {
2761 wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
2762 "for Info ID %u", info_id);
2763 break;
2764 }
2765 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2766 slen);
2767 pos += slen;
2768 }
2769
2770 hs20_notify_parse_done(wpa_s);
2771 }
2772
2773
2774 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2775 struct wpa_scan_results *scan_res)
2776 {
2777 wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
2778 "ANQP fetch");
2779 interworking_start_fetch_anqp(wpa_s);
2780 }
2781
2782
2783 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2784 int *freqs)
2785 {
2786 interworking_stop_fetch_anqp(wpa_s);
2787 wpa_s->network_select = 1;
2788 wpa_s->auto_network_select = 0;
2789 wpa_s->auto_select = !!auto_select;
2790 wpa_s->fetch_all_anqp = 0;
2791 wpa_s->fetch_osu_info = 0;
2792 wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
2793 "selection");
2794 wpa_s->scan_res_handler = interworking_scan_res_handler;
2795 wpa_s->normal_scans = 0;
2796 wpa_s->scan_req = MANUAL_SCAN_REQ;
2797 os_free(wpa_s->manual_scan_freqs);
2798 wpa_s->manual_scan_freqs = freqs;
2799 wpa_s->after_wps = 0;
2800 wpa_s->known_wps_freq = 0;
2801 wpa_supplicant_req_scan(wpa_s, 0, 0);
2802
2803 return 0;
2804 }
2805
2806
2807 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2808 enum gas_query_result result,
2809 const struct wpabuf *adv_proto,
2810 const struct wpabuf *resp, u16 status_code)
2811 {
2812 struct wpa_supplicant *wpa_s = ctx;
2813 struct wpabuf *n;
2814
2815 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2816 " dialog_token=%d status_code=%d resp_len=%d",
2817 MAC2STR(addr), dialog_token, status_code,
2818 resp ? (int) wpabuf_len(resp) : -1);
2819 if (!resp)
2820 return;
2821
2822 n = wpabuf_dup(resp);
2823 if (n == NULL)
2824 return;
2825 wpabuf_free(wpa_s->prev_gas_resp);
2826 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2827 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2828 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2829 wpa_s->last_gas_resp = n;
2830 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2831 wpa_s->last_gas_dialog_token = dialog_token;
2832 }
2833
2834
2835 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2836 const struct wpabuf *adv_proto,
2837 const struct wpabuf *query)
2838 {
2839 struct wpabuf *buf;
2840 int ret = 0;
2841 int freq;
2842 struct wpa_bss *bss;
2843 int res;
2844 size_t len;
2845 u8 query_resp_len_limit = 0, pame_bi = 0;
2846
2847 freq = wpa_s->assoc_freq;
2848 bss = wpa_bss_get_bssid(wpa_s, dst);
2849 if (bss)
2850 freq = bss->freq;
2851 if (freq <= 0)
2852 return -1;
2853
2854 wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2855 MAC2STR(dst), freq);
2856 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2857 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2858
2859 len = 3 + wpabuf_len(adv_proto) + 2;
2860 if (query)
2861 len += wpabuf_len(query);
2862 buf = gas_build_initial_req(0, len);
2863 if (buf == NULL)
2864 return -1;
2865
2866 /* Advertisement Protocol IE */
2867 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2868 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2869 wpabuf_put_u8(buf, (query_resp_len_limit & 0x7f) |
2870 (pame_bi ? 0x80 : 0));
2871 wpabuf_put_buf(buf, adv_proto);
2872
2873 /* GAS Query */
2874 if (query) {
2875 wpabuf_put_le16(buf, wpabuf_len(query));
2876 wpabuf_put_buf(buf, query);
2877 } else
2878 wpabuf_put_le16(buf, 0);
2879
2880 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2881 if (res < 0) {
2882 wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2883 wpabuf_free(buf);
2884 ret = -1;
2885 } else
2886 wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "
2887 "%u", res);
2888
2889 return ret;
2890 }
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