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Interworking: Fix network selection warning without SIM/USIM support
[thirdparty/hostap.git] / wpa_supplicant / interworking.c
1 /*
2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/gas.h"
15 #include "common/wpa_ctrl.h"
16 #include "utils/pcsc_funcs.h"
17 #include "utils/eloop.h"
18 #include "drivers/driver.h"
19 #include "eap_common/eap_defs.h"
20 #include "eap_peer/eap.h"
21 #include "eap_peer/eap_methods.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wpa_supplicant_i.h"
25 #include "config.h"
26 #include "config_ssid.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "notify.h"
30 #include "driver_i.h"
31 #include "gas_query.h"
32 #include "hs20_supplicant.h"
33 #include "interworking.h"
34
35
36 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
37 #define INTERWORKING_3GPP
38 #else
39 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
40 #define INTERWORKING_3GPP
41 #else
42 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
43 #define INTERWORKING_3GPP
44 #endif
45 #endif
46 #endif
47
48 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
49 static struct wpa_cred * interworking_credentials_available_realm(
50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
51 int *excluded);
52 static struct wpa_cred * interworking_credentials_available_3gpp(
53 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
54 int *excluded);
55
56
57 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 {
59 if (a->priority > b->priority)
60 return 1;
61 if (a->priority < b->priority)
62 return -1;
63 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 return 0;
66 if (a->sp_priority < b->sp_priority)
67 return 1;
68 if (a->sp_priority > b->sp_priority)
69 return -1;
70 return 0;
71 }
72
73
74 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 {
76 unsigned int tried;
77
78 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
79 wpa_supplicant_cancel_sched_scan(wpa_s);
80 wpa_s->own_disconnect_req = 1;
81 wpa_supplicant_deauthenticate(wpa_s,
82 WLAN_REASON_DEAUTH_LEAVING);
83 }
84 wpa_s->disconnected = 0;
85 wpa_s->reassociate = 1;
86 tried = wpa_s->interworking_fast_assoc_tried;
87 wpa_s->interworking_fast_assoc_tried = 1;
88
89 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
90 return;
91
92 wpa_s->interworking_fast_assoc_tried = 0;
93 wpa_supplicant_req_scan(wpa_s, 0, 0);
94 }
95
96
97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
98 struct wpabuf *extra)
99 {
100 struct wpabuf *buf;
101 size_t i;
102 u8 *len_pos;
103
104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 (extra ? wpabuf_len(extra) : 0));
106 if (buf == NULL)
107 return NULL;
108
109 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
110 for (i = 0; i < num_ids; i++)
111 wpabuf_put_le16(buf, info_ids[i]);
112 gas_anqp_set_element_len(buf, len_pos);
113 if (extra)
114 wpabuf_put_buf(buf, extra);
115
116 gas_anqp_set_len(buf);
117
118 return buf;
119 }
120
121
122 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
123 u8 dialog_token,
124 enum gas_query_result result,
125 const struct wpabuf *adv_proto,
126 const struct wpabuf *resp,
127 u16 status_code)
128 {
129 struct wpa_supplicant *wpa_s = ctx;
130
131 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
132 " dialog_token=%u result=%d status_code=%u",
133 MAC2STR(dst), dialog_token, result, status_code);
134 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
135 status_code);
136 interworking_next_anqp_fetch(wpa_s);
137 }
138
139
140 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
141 {
142 struct wpa_cred *cred;
143
144 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
145 if (cred->roaming_consortium_len)
146 return 1;
147 if (cred->required_roaming_consortium_len)
148 return 1;
149 }
150 return 0;
151 }
152
153
154 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
155 {
156 struct wpa_cred *cred;
157
158 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
159 if (cred->pcsc || cred->imsi)
160 return 1;
161 }
162 return 0;
163 }
164
165
166 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
167 {
168 struct wpa_cred *cred;
169
170 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
171 if (cred->pcsc || cred->imsi)
172 continue;
173 if (!cred->eap_method)
174 return 1;
175 if (cred->realm && cred->roaming_consortium_len == 0)
176 return 1;
177 }
178 return 0;
179 }
180
181
182 static int cred_with_domain(struct wpa_supplicant *wpa_s)
183 {
184 struct wpa_cred *cred;
185
186 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
187 if (cred->domain || cred->pcsc || cred->imsi ||
188 cred->roaming_partner)
189 return 1;
190 }
191 return 0;
192 }
193
194
195 #ifdef CONFIG_HS20
196
197 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
198 {
199 struct wpa_cred *cred;
200
201 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
202 if (cred->min_dl_bandwidth_home ||
203 cred->min_ul_bandwidth_home ||
204 cred->min_dl_bandwidth_roaming ||
205 cred->min_ul_bandwidth_roaming)
206 return 1;
207 }
208 return 0;
209 }
210
211
212 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
213 {
214 struct wpa_cred *cred;
215
216 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
217 if (cred->num_req_conn_capab)
218 return 1;
219 }
220 return 0;
221 }
222
223 #endif /* CONFIG_HS20 */
224
225
226 static int additional_roaming_consortiums(struct wpa_bss *bss)
227 {
228 const u8 *ie;
229 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
230 if (ie == NULL || ie[1] == 0)
231 return 0;
232 return ie[2]; /* Number of ANQP OIs */
233 }
234
235
236 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
237 {
238 struct wpa_supplicant *wpa_s = eloop_ctx;
239 interworking_next_anqp_fetch(wpa_s);
240 }
241
242
243 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
244 struct wpa_bss *bss)
245 {
246 struct wpabuf *buf;
247 int ret = 0;
248 int res;
249 u16 info_ids[8];
250 size_t num_info_ids = 0;
251 struct wpabuf *extra = NULL;
252 int all = wpa_s->fetch_all_anqp;
253
254 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
255 MAC2STR(bss->bssid));
256 wpa_s->interworking_gas_bss = bss;
257
258 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
259 if (all) {
260 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
261 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
262 }
263 if (all || (cred_with_roaming_consortium(wpa_s) &&
264 additional_roaming_consortiums(bss)))
265 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
266 if (all)
267 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
268 if (all || cred_with_nai_realm(wpa_s))
269 info_ids[num_info_ids++] = ANQP_NAI_REALM;
270 if (all || cred_with_3gpp(wpa_s)) {
271 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
272 wpa_supplicant_scard_init(wpa_s, NULL);
273 }
274 if (all || cred_with_domain(wpa_s))
275 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
276 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
277 (u8 *) info_ids, num_info_ids * 2);
278
279 #ifdef CONFIG_HS20
280 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
281 u8 *len_pos;
282
283 extra = wpabuf_alloc(100);
284 if (!extra)
285 return -1;
286
287 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
288 wpabuf_put_be24(extra, OUI_WFA);
289 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
290 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
291 wpabuf_put_u8(extra, 0); /* Reserved */
292 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
293 if (all)
294 wpabuf_put_u8(extra,
295 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
296 if (all || cred_with_min_backhaul(wpa_s))
297 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
298 if (all || cred_with_conn_capab(wpa_s))
299 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
300 if (all)
301 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
302 if (all)
303 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
304 gas_anqp_set_element_len(extra, len_pos);
305 }
306 #endif /* CONFIG_HS20 */
307
308 buf = anqp_build_req(info_ids, num_info_ids, extra);
309 wpabuf_free(extra);
310 if (buf == NULL)
311 return -1;
312
313 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
314 interworking_anqp_resp_cb, wpa_s);
315 if (res < 0) {
316 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
317 wpabuf_free(buf);
318 ret = -1;
319 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
320 NULL);
321 } else
322 wpa_msg(wpa_s, MSG_DEBUG,
323 "ANQP: Query started with dialog token %u", res);
324
325 return ret;
326 }
327
328
329 struct nai_realm_eap {
330 u8 method;
331 u8 inner_method;
332 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
333 u8 cred_type;
334 u8 tunneled_cred_type;
335 };
336
337 struct nai_realm {
338 u8 encoding;
339 char *realm;
340 u8 eap_count;
341 struct nai_realm_eap *eap;
342 };
343
344
345 static void nai_realm_free(struct nai_realm *realms, u16 count)
346 {
347 u16 i;
348
349 if (realms == NULL)
350 return;
351 for (i = 0; i < count; i++) {
352 os_free(realms[i].eap);
353 os_free(realms[i].realm);
354 }
355 os_free(realms);
356 }
357
358
359 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
360 const u8 *end)
361 {
362 u8 elen, auth_count, a;
363 const u8 *e_end;
364
365 if (pos + 3 > end) {
366 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
367 return NULL;
368 }
369
370 elen = *pos++;
371 if (pos + elen > end || elen < 2) {
372 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
373 return NULL;
374 }
375 e_end = pos + elen;
376 e->method = *pos++;
377 auth_count = *pos++;
378 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
379 elen, e->method, auth_count);
380
381 for (a = 0; a < auth_count; a++) {
382 u8 id, len;
383
384 if (pos + 2 > end || pos + 2 + pos[1] > end) {
385 wpa_printf(MSG_DEBUG, "No room for Authentication "
386 "Parameter subfield");
387 return NULL;
388 }
389
390 id = *pos++;
391 len = *pos++;
392
393 switch (id) {
394 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
395 if (len < 1)
396 break;
397 e->inner_non_eap = *pos;
398 if (e->method != EAP_TYPE_TTLS)
399 break;
400 switch (*pos) {
401 case NAI_REALM_INNER_NON_EAP_PAP:
402 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
403 break;
404 case NAI_REALM_INNER_NON_EAP_CHAP:
405 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
406 break;
407 case NAI_REALM_INNER_NON_EAP_MSCHAP:
408 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
409 break;
410 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
411 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
412 break;
413 }
414 break;
415 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
416 if (len < 1)
417 break;
418 e->inner_method = *pos;
419 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
420 e->inner_method);
421 break;
422 case NAI_REALM_EAP_AUTH_CRED_TYPE:
423 if (len < 1)
424 break;
425 e->cred_type = *pos;
426 wpa_printf(MSG_DEBUG, "Credential Type: %u",
427 e->cred_type);
428 break;
429 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
430 if (len < 1)
431 break;
432 e->tunneled_cred_type = *pos;
433 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
434 "Type: %u", e->tunneled_cred_type);
435 break;
436 default:
437 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
438 "Parameter: id=%u len=%u", id, len);
439 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
440 "Value", pos, len);
441 break;
442 }
443
444 pos += len;
445 }
446
447 return e_end;
448 }
449
450
451 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
452 const u8 *end)
453 {
454 u16 len;
455 const u8 *f_end;
456 u8 realm_len, e;
457
458 if (end - pos < 4) {
459 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
460 "fixed fields");
461 return NULL;
462 }
463
464 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
465 pos += 2;
466 if (pos + len > end || len < 3) {
467 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
468 "(len=%u; left=%u)",
469 len, (unsigned int) (end - pos));
470 return NULL;
471 }
472 f_end = pos + len;
473
474 r->encoding = *pos++;
475 realm_len = *pos++;
476 if (pos + realm_len > f_end) {
477 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
478 "(len=%u; left=%u)",
479 realm_len, (unsigned int) (f_end - pos));
480 return NULL;
481 }
482 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
483 r->realm = dup_binstr(pos, realm_len);
484 if (r->realm == NULL)
485 return NULL;
486 pos += realm_len;
487
488 if (pos + 1 > f_end) {
489 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
490 return NULL;
491 }
492 r->eap_count = *pos++;
493 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
494 if (pos + r->eap_count * 3 > f_end) {
495 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
496 return NULL;
497 }
498 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
499 if (r->eap == NULL)
500 return NULL;
501
502 for (e = 0; e < r->eap_count; e++) {
503 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
504 if (pos == NULL)
505 return NULL;
506 }
507
508 return f_end;
509 }
510
511
512 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
513 {
514 struct nai_realm *realm;
515 const u8 *pos, *end;
516 u16 i, num;
517 size_t left;
518
519 if (anqp == NULL)
520 return NULL;
521 left = wpabuf_len(anqp);
522 if (left < 2)
523 return NULL;
524
525 pos = wpabuf_head_u8(anqp);
526 end = pos + left;
527 num = WPA_GET_LE16(pos);
528 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
529 pos += 2;
530 left -= 2;
531
532 if (num > left / 5) {
533 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
534 "enough data (%u octets) for that many realms",
535 num, (unsigned int) left);
536 return NULL;
537 }
538
539 realm = os_calloc(num, sizeof(struct nai_realm));
540 if (realm == NULL)
541 return NULL;
542
543 for (i = 0; i < num; i++) {
544 pos = nai_realm_parse_realm(&realm[i], pos, end);
545 if (pos == NULL) {
546 nai_realm_free(realm, num);
547 return NULL;
548 }
549 }
550
551 *count = num;
552 return realm;
553 }
554
555
556 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
557 {
558 char *tmp, *pos, *end;
559 int match = 0;
560
561 if (realm->realm == NULL || home_realm == NULL)
562 return 0;
563
564 if (os_strchr(realm->realm, ';') == NULL)
565 return os_strcasecmp(realm->realm, home_realm) == 0;
566
567 tmp = os_strdup(realm->realm);
568 if (tmp == NULL)
569 return 0;
570
571 pos = tmp;
572 while (*pos) {
573 end = os_strchr(pos, ';');
574 if (end)
575 *end = '\0';
576 if (os_strcasecmp(pos, home_realm) == 0) {
577 match = 1;
578 break;
579 }
580 if (end == NULL)
581 break;
582 pos = end + 1;
583 }
584
585 os_free(tmp);
586
587 return match;
588 }
589
590
591 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
592 struct nai_realm_eap *eap)
593 {
594 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
595 wpa_msg(wpa_s, MSG_DEBUG,
596 "nai-realm-cred-username: EAP method not supported: %d",
597 eap->method);
598 return 0; /* method not supported */
599 }
600
601 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
602 eap->method != EAP_TYPE_FAST) {
603 /* Only tunneled methods with username/password supported */
604 wpa_msg(wpa_s, MSG_DEBUG,
605 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
606 eap->method);
607 return 0;
608 }
609
610 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
611 if (eap->inner_method &&
612 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
613 wpa_msg(wpa_s, MSG_DEBUG,
614 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
615 eap->inner_method);
616 return 0;
617 }
618 if (!eap->inner_method &&
619 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
620 wpa_msg(wpa_s, MSG_DEBUG,
621 "nai-realm-cred-username: MSCHAPv2 not supported");
622 return 0;
623 }
624 }
625
626 if (eap->method == EAP_TYPE_TTLS) {
627 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
628 return 1; /* Assume TTLS/MSCHAPv2 is used */
629 if (eap->inner_method &&
630 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
631 wpa_msg(wpa_s, MSG_DEBUG,
632 "nai-realm-cred-username: TTLS, but inner not supported: %d",
633 eap->inner_method);
634 return 0;
635 }
636 if (eap->inner_non_eap &&
637 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
638 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
639 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
640 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
641 wpa_msg(wpa_s, MSG_DEBUG,
642 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
643 eap->inner_non_eap);
644 return 0;
645 }
646 }
647
648 if (eap->inner_method &&
649 eap->inner_method != EAP_TYPE_GTC &&
650 eap->inner_method != EAP_TYPE_MSCHAPV2) {
651 wpa_msg(wpa_s, MSG_DEBUG,
652 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
653 eap->inner_method);
654 return 0;
655 }
656
657 return 1;
658 }
659
660
661 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
662 struct nai_realm_eap *eap)
663 {
664 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
665 wpa_msg(wpa_s, MSG_DEBUG,
666 "nai-realm-cred-cert: Method not supported: %d",
667 eap->method);
668 return 0; /* method not supported */
669 }
670
671 if (eap->method != EAP_TYPE_TLS) {
672 /* Only EAP-TLS supported for credential authentication */
673 wpa_msg(wpa_s, MSG_DEBUG,
674 "nai-realm-cred-cert: Method not TLS: %d",
675 eap->method);
676 return 0;
677 }
678
679 return 1;
680 }
681
682
683 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
684 struct wpa_cred *cred,
685 struct nai_realm *realm)
686 {
687 u8 e;
688
689 if (cred->username == NULL ||
690 cred->username[0] == '\0' ||
691 ((cred->password == NULL ||
692 cred->password[0] == '\0') &&
693 (cred->private_key == NULL ||
694 cred->private_key[0] == '\0'))) {
695 wpa_msg(wpa_s, MSG_DEBUG,
696 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
697 cred->username ? cred->username : "NULL",
698 cred->password ? cred->password : "NULL",
699 cred->private_key ? cred->private_key : "NULL");
700 return NULL;
701 }
702
703 for (e = 0; e < realm->eap_count; e++) {
704 struct nai_realm_eap *eap = &realm->eap[e];
705 if (cred->password && cred->password[0] &&
706 nai_realm_cred_username(wpa_s, eap))
707 return eap;
708 if (cred->private_key && cred->private_key[0] &&
709 nai_realm_cred_cert(wpa_s, eap))
710 return eap;
711 }
712
713 return NULL;
714 }
715
716
717 #ifdef INTERWORKING_3GPP
718
719 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
720 {
721 u8 plmn[3], plmn2[3];
722 const u8 *pos, *end;
723 u8 udhl;
724
725 /*
726 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
727 * operator is allowed to include only two digits of the MNC, so allow
728 * matches based on both two and three digit MNC assumptions. Since some
729 * SIM/USIM cards may not expose MNC length conveniently, we may be
730 * provided the default MNC length 3 here and as such, checking with MNC
731 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
732 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
733 * with otherwise matching values would not be good idea in general, so
734 * this should not result in selecting incorrect networks.
735 */
736 /* Match with 3 digit MNC */
737 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
738 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
739 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
740 /* Match with 2 digit MNC */
741 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
742 plmn2[1] = (imsi[2] - '0') | 0xf0;
743 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
744
745 if (anqp == NULL)
746 return 0;
747 pos = wpabuf_head_u8(anqp);
748 end = pos + wpabuf_len(anqp);
749 if (pos + 2 > end)
750 return 0;
751 if (*pos != 0) {
752 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
753 return 0;
754 }
755 pos++;
756 udhl = *pos++;
757 if (pos + udhl > end) {
758 wpa_printf(MSG_DEBUG, "Invalid UDHL");
759 return 0;
760 }
761 end = pos + udhl;
762
763 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
764 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
765 imsi, mnc_len);
766
767 while (pos + 2 <= end) {
768 u8 iei, len;
769 const u8 *l_end;
770 iei = *pos++;
771 len = *pos++ & 0x7f;
772 if (pos + len > end)
773 break;
774 l_end = pos + len;
775
776 if (iei == 0 && len > 0) {
777 /* PLMN List */
778 u8 num, i;
779 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
780 pos, len);
781 num = *pos++;
782 for (i = 0; i < num; i++) {
783 if (pos + 3 > l_end)
784 break;
785 if (os_memcmp(pos, plmn, 3) == 0 ||
786 os_memcmp(pos, plmn2, 3) == 0)
787 return 1; /* Found matching PLMN */
788 pos += 3;
789 }
790 } else {
791 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
792 pos, len);
793 }
794
795 pos = l_end;
796 }
797
798 return 0;
799 }
800
801
802 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
803 size_t mnc_len, char prefix)
804 {
805 const char *sep, *msin;
806 char *end, *pos;
807 size_t msin_len, plmn_len;
808
809 /*
810 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
811 * Root NAI:
812 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
813 * <MNC> is zero-padded to three digits in case two-digit MNC is used
814 */
815
816 if (imsi == NULL || os_strlen(imsi) > 16) {
817 wpa_printf(MSG_DEBUG, "No valid IMSI available");
818 return -1;
819 }
820 sep = os_strchr(imsi, '-');
821 if (sep) {
822 plmn_len = sep - imsi;
823 msin = sep + 1;
824 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
825 plmn_len = 3 + mnc_len;
826 msin = imsi + plmn_len;
827 } else
828 return -1;
829 if (plmn_len != 5 && plmn_len != 6)
830 return -1;
831 msin_len = os_strlen(msin);
832
833 pos = nai;
834 end = nai + nai_len;
835 if (prefix)
836 *pos++ = prefix;
837 os_memcpy(pos, imsi, plmn_len);
838 pos += plmn_len;
839 os_memcpy(pos, msin, msin_len);
840 pos += msin_len;
841 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
842 if (plmn_len == 5) {
843 *pos++ = '0';
844 *pos++ = imsi[3];
845 *pos++ = imsi[4];
846 } else {
847 *pos++ = imsi[3];
848 *pos++ = imsi[4];
849 *pos++ = imsi[5];
850 }
851 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
852 imsi[0], imsi[1], imsi[2]);
853
854 return 0;
855 }
856
857
858 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
859 {
860 char nai[100];
861 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
862 return -1;
863 return wpa_config_set_quoted(ssid, "identity", nai);
864 }
865
866 #endif /* INTERWORKING_3GPP */
867
868
869 static int already_connected(struct wpa_supplicant *wpa_s,
870 struct wpa_cred *cred, struct wpa_bss *bss)
871 {
872 struct wpa_ssid *ssid, *sel_ssid;
873 struct wpa_bss *selected;
874
875 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
876 return 0;
877
878 ssid = wpa_s->current_ssid;
879 if (ssid->parent_cred != cred)
880 return 0;
881
882 if (ssid->ssid_len != bss->ssid_len ||
883 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
884 return 0;
885
886 sel_ssid = NULL;
887 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
888 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
889 return 0; /* higher priority network in scan results */
890
891 return 1;
892 }
893
894
895 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
896 struct wpa_cred *cred,
897 struct wpa_bss *bss)
898 {
899 struct wpa_ssid *ssid;
900
901 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
902 if (ssid->parent_cred != cred)
903 continue;
904 if (ssid->ssid_len != bss->ssid_len ||
905 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
906 continue;
907
908 break;
909 }
910
911 if (ssid == NULL)
912 return;
913
914 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
915
916 if (ssid == wpa_s->current_ssid) {
917 wpa_sm_set_config(wpa_s->wpa, NULL);
918 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
919 wpa_s->own_disconnect_req = 1;
920 wpa_supplicant_deauthenticate(wpa_s,
921 WLAN_REASON_DEAUTH_LEAVING);
922 }
923
924 wpas_notify_network_removed(wpa_s, ssid);
925 wpa_config_remove_network(wpa_s->conf, ssid->id);
926 }
927
928
929 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
930 struct wpa_ssid *ssid)
931 {
932 const char *key_mgmt = NULL;
933 #ifdef CONFIG_IEEE80211R
934 int res;
935 struct wpa_driver_capa capa;
936
937 res = wpa_drv_get_capa(wpa_s, &capa);
938 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
939 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
940 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
941 "WPA-EAP FT-EAP";
942 }
943 #endif /* CONFIG_IEEE80211R */
944
945 if (!key_mgmt)
946 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
947 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
948 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0)
949 return -1;
950 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
951 return -1;
952 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
953 return -1;
954 return 0;
955 }
956
957
958 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
959 struct wpa_cred *cred,
960 struct wpa_bss *bss, int only_add)
961 {
962 #ifdef INTERWORKING_3GPP
963 struct wpa_ssid *ssid;
964 int eap_type;
965 int res;
966 char prefix;
967
968 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
969 return -1;
970
971 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
972 " (3GPP)", MAC2STR(bss->bssid));
973
974 if (already_connected(wpa_s, cred, bss)) {
975 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
976 MAC2STR(bss->bssid));
977 return wpa_s->current_ssid->id;
978 }
979
980 remove_duplicate_network(wpa_s, cred, bss);
981
982 ssid = wpa_config_add_network(wpa_s->conf);
983 if (ssid == NULL)
984 return -1;
985 ssid->parent_cred = cred;
986
987 wpas_notify_network_added(wpa_s, ssid);
988 wpa_config_set_network_defaults(ssid);
989 ssid->priority = cred->priority;
990 ssid->temporary = 1;
991 ssid->ssid = os_zalloc(bss->ssid_len + 1);
992 if (ssid->ssid == NULL)
993 goto fail;
994 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
995 ssid->ssid_len = bss->ssid_len;
996 ssid->eap.sim_num = cred->sim_num;
997
998 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
999 goto fail;
1000
1001 eap_type = EAP_TYPE_SIM;
1002 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1003 eap_type = EAP_TYPE_AKA;
1004 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1005 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1006 cred->eap_method[0].method == EAP_TYPE_AKA ||
1007 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1008 eap_type = cred->eap_method[0].method;
1009 }
1010
1011 switch (eap_type) {
1012 case EAP_TYPE_SIM:
1013 prefix = '1';
1014 res = wpa_config_set(ssid, "eap", "SIM", 0);
1015 break;
1016 case EAP_TYPE_AKA:
1017 prefix = '0';
1018 res = wpa_config_set(ssid, "eap", "AKA", 0);
1019 break;
1020 case EAP_TYPE_AKA_PRIME:
1021 prefix = '6';
1022 res = wpa_config_set(ssid, "eap", "AKA'", 0);
1023 break;
1024 default:
1025 res = -1;
1026 break;
1027 }
1028 if (res < 0) {
1029 wpa_msg(wpa_s, MSG_DEBUG,
1030 "Selected EAP method (%d) not supported", eap_type);
1031 goto fail;
1032 }
1033
1034 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1035 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1036 goto fail;
1037 }
1038
1039 if (cred->milenage && cred->milenage[0]) {
1040 if (wpa_config_set_quoted(ssid, "password",
1041 cred->milenage) < 0)
1042 goto fail;
1043 } else if (cred->pcsc) {
1044 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1045 goto fail;
1046 if (wpa_s->conf->pcsc_pin &&
1047 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1048 < 0)
1049 goto fail;
1050 }
1051
1052 wpa_s->next_ssid = ssid;
1053 wpa_config_update_prio_list(wpa_s->conf);
1054 if (!only_add)
1055 interworking_reconnect(wpa_s);
1056
1057 return ssid->id;
1058
1059 fail:
1060 wpas_notify_network_removed(wpa_s, ssid);
1061 wpa_config_remove_network(wpa_s->conf, ssid->id);
1062 #endif /* INTERWORKING_3GPP */
1063 return -1;
1064 }
1065
1066
1067 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1068 size_t rc_len)
1069 {
1070 const u8 *pos, *end;
1071 u8 lens;
1072
1073 if (ie == NULL)
1074 return 0;
1075
1076 pos = ie + 2;
1077 end = ie + 2 + ie[1];
1078
1079 /* Roaming Consortium element:
1080 * Number of ANQP OIs
1081 * OI #1 and #2 lengths
1082 * OI #1, [OI #2], [OI #3]
1083 */
1084
1085 if (pos + 2 > end)
1086 return 0;
1087
1088 pos++; /* skip Number of ANQP OIs */
1089 lens = *pos++;
1090 if (pos + (lens & 0x0f) + (lens >> 4) > end)
1091 return 0;
1092
1093 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1094 return 1;
1095 pos += lens & 0x0f;
1096
1097 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1098 return 1;
1099 pos += lens >> 4;
1100
1101 if (pos < end && (size_t) (end - pos) == rc_len &&
1102 os_memcmp(pos, rc_id, rc_len) == 0)
1103 return 1;
1104
1105 return 0;
1106 }
1107
1108
1109 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1110 const u8 *rc_id, size_t rc_len)
1111 {
1112 const u8 *pos, *end;
1113 u8 len;
1114
1115 if (anqp == NULL)
1116 return 0;
1117
1118 pos = wpabuf_head(anqp);
1119 end = pos + wpabuf_len(anqp);
1120
1121 /* Set of <OI Length, OI> duples */
1122 while (pos < end) {
1123 len = *pos++;
1124 if (pos + len > end)
1125 break;
1126 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1127 return 1;
1128 pos += len;
1129 }
1130
1131 return 0;
1132 }
1133
1134
1135 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1136 const u8 *rc_id, size_t rc_len)
1137 {
1138 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1139 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1140 }
1141
1142
1143 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1144 {
1145 const u8 *ie;
1146
1147 if (cred->required_roaming_consortium_len == 0)
1148 return 0;
1149
1150 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1151
1152 if (ie == NULL &&
1153 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1154 return 1;
1155
1156 return !roaming_consortium_match(ie,
1157 bss->anqp ?
1158 bss->anqp->roaming_consortium : NULL,
1159 cred->required_roaming_consortium,
1160 cred->required_roaming_consortium_len);
1161 }
1162
1163
1164 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1165 {
1166 size_t i;
1167
1168 if (!cred->excluded_ssid)
1169 return 0;
1170
1171 for (i = 0; i < cred->num_excluded_ssid; i++) {
1172 struct excluded_ssid *e = &cred->excluded_ssid[i];
1173 if (bss->ssid_len == e->ssid_len &&
1174 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1175 return 1;
1176 }
1177
1178 return 0;
1179 }
1180
1181
1182 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1183 struct wpa_cred *cred, struct wpa_bss *bss)
1184 {
1185 int res;
1186 unsigned int dl_bandwidth, ul_bandwidth;
1187 const u8 *wan;
1188 u8 wan_info, dl_load, ul_load;
1189 u16 lmd;
1190 u32 ul_speed, dl_speed;
1191
1192 if (!cred->min_dl_bandwidth_home &&
1193 !cred->min_ul_bandwidth_home &&
1194 !cred->min_dl_bandwidth_roaming &&
1195 !cred->min_ul_bandwidth_roaming)
1196 return 0; /* No bandwidth constraint specified */
1197
1198 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1199 return 0; /* No WAN Metrics known - ignore constraint */
1200
1201 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1202 wan_info = wan[0];
1203 if (wan_info & BIT(3))
1204 return 1; /* WAN link at capacity */
1205 lmd = WPA_GET_LE16(wan + 11);
1206 if (lmd == 0)
1207 return 0; /* Downlink/Uplink Load was not measured */
1208 dl_speed = WPA_GET_LE32(wan + 1);
1209 ul_speed = WPA_GET_LE32(wan + 5);
1210 dl_load = wan[9];
1211 ul_load = wan[10];
1212
1213 if (dl_speed >= 0xffffff)
1214 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1215 else
1216 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1217
1218 if (ul_speed >= 0xffffff)
1219 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1220 else
1221 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1222
1223 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1224 bss->anqp->domain_name : NULL);
1225 if (res > 0) {
1226 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1227 return 1;
1228 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1229 return 1;
1230 } else {
1231 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1232 return 1;
1233 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1234 return 1;
1235 }
1236
1237 return 0;
1238 }
1239
1240
1241 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1242 struct wpa_cred *cred, struct wpa_bss *bss)
1243 {
1244 const u8 *ie;
1245 int res;
1246
1247 if (!cred->max_bss_load)
1248 return 0; /* No BSS Load constraint specified */
1249
1250 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1251 if (ie == NULL || ie[1] < 3)
1252 return 0; /* No BSS Load advertised */
1253
1254 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1255 bss->anqp->domain_name : NULL);
1256 if (res <= 0)
1257 return 0; /* Not a home network */
1258
1259 return ie[4] > cred->max_bss_load;
1260 }
1261
1262
1263 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1264 {
1265 while (pos + 4 <= end) {
1266 if (pos[0] == proto && pos[3] == 1 /* Open */)
1267 return 1;
1268 pos += 4;
1269 }
1270
1271 return 0;
1272 }
1273
1274
1275 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1276 u16 port)
1277 {
1278 while (pos + 4 <= end) {
1279 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1280 pos[3] == 1 /* Open */)
1281 return 1;
1282 pos += 4;
1283 }
1284
1285 return 0;
1286 }
1287
1288
1289 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1290 struct wpa_cred *cred, struct wpa_bss *bss)
1291 {
1292 int res;
1293 const u8 *capab, *end;
1294 unsigned int i, j;
1295 int *ports;
1296
1297 if (!cred->num_req_conn_capab)
1298 return 0; /* No connection capability constraint specified */
1299
1300 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1301 return 0; /* No Connection Capability known - ignore constraint
1302 */
1303
1304 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1305 bss->anqp->domain_name : NULL);
1306 if (res > 0)
1307 return 0; /* No constraint in home network */
1308
1309 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1310 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1311
1312 for (i = 0; i < cred->num_req_conn_capab; i++) {
1313 ports = cred->req_conn_capab_port[i];
1314 if (!ports) {
1315 if (!has_proto_match(capab, end,
1316 cred->req_conn_capab_proto[i]))
1317 return 1;
1318 } else {
1319 for (j = 0; ports[j] > -1; j++) {
1320 if (!has_proto_port_match(
1321 capab, end,
1322 cred->req_conn_capab_proto[i],
1323 ports[j]))
1324 return 1;
1325 }
1326 }
1327 }
1328
1329 return 0;
1330 }
1331
1332
1333 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1334 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1335 int *excluded)
1336 {
1337 struct wpa_cred *cred, *selected = NULL;
1338 const u8 *ie;
1339 int is_excluded = 0;
1340
1341 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1342
1343 if (ie == NULL &&
1344 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1345 return NULL;
1346
1347 if (wpa_s->conf->cred == NULL)
1348 return NULL;
1349
1350 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1351 if (cred->roaming_consortium_len == 0)
1352 continue;
1353
1354 if (!roaming_consortium_match(ie,
1355 bss->anqp ?
1356 bss->anqp->roaming_consortium :
1357 NULL,
1358 cred->roaming_consortium,
1359 cred->roaming_consortium_len))
1360 continue;
1361
1362 if (cred_no_required_oi_match(cred, bss))
1363 continue;
1364 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1365 continue;
1366 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1367 continue;
1368 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1369 continue;
1370 if (cred_excluded_ssid(cred, bss)) {
1371 if (excluded == NULL)
1372 continue;
1373 if (selected == NULL) {
1374 selected = cred;
1375 is_excluded = 1;
1376 }
1377 } else {
1378 if (selected == NULL || is_excluded ||
1379 cred_prio_cmp(selected, cred) < 0) {
1380 selected = cred;
1381 is_excluded = 0;
1382 }
1383 }
1384 }
1385
1386 if (excluded)
1387 *excluded = is_excluded;
1388
1389 return selected;
1390 }
1391
1392
1393 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1394 struct wpa_cred *cred, int ttls)
1395 {
1396 if (cred->eap_method) {
1397 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1398 cred->eap_method->method == EAP_TYPE_TTLS;
1399
1400 os_free(ssid->eap.eap_methods);
1401 ssid->eap.eap_methods =
1402 os_malloc(sizeof(struct eap_method_type) * 2);
1403 if (ssid->eap.eap_methods == NULL)
1404 return -1;
1405 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1406 sizeof(*cred->eap_method));
1407 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1408 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1409 }
1410
1411 if (ttls && cred->username && cred->username[0]) {
1412 const char *pos;
1413 char *anon;
1414 /* Use anonymous NAI in Phase 1 */
1415 pos = os_strchr(cred->username, '@');
1416 if (pos) {
1417 size_t buflen = 9 + os_strlen(pos) + 1;
1418 anon = os_malloc(buflen);
1419 if (anon == NULL)
1420 return -1;
1421 os_snprintf(anon, buflen, "anonymous%s", pos);
1422 } else if (cred->realm) {
1423 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1424 anon = os_malloc(buflen);
1425 if (anon == NULL)
1426 return -1;
1427 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1428 } else {
1429 anon = os_strdup("anonymous");
1430 if (anon == NULL)
1431 return -1;
1432 }
1433 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1434 0) {
1435 os_free(anon);
1436 return -1;
1437 }
1438 os_free(anon);
1439 }
1440
1441 if (cred->username && cred->username[0] &&
1442 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1443 return -1;
1444
1445 if (cred->password && cred->password[0]) {
1446 if (cred->ext_password &&
1447 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1448 return -1;
1449 if (!cred->ext_password &&
1450 wpa_config_set_quoted(ssid, "password", cred->password) <
1451 0)
1452 return -1;
1453 }
1454
1455 if (cred->client_cert && cred->client_cert[0] &&
1456 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1457 return -1;
1458
1459 #ifdef ANDROID
1460 if (cred->private_key &&
1461 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1462 /* Use OpenSSL engine configuration for Android keystore */
1463 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1464 wpa_config_set_quoted(ssid, "key_id",
1465 cred->private_key + 11) < 0 ||
1466 wpa_config_set(ssid, "engine", "1", 0) < 0)
1467 return -1;
1468 } else
1469 #endif /* ANDROID */
1470 if (cred->private_key && cred->private_key[0] &&
1471 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1472 return -1;
1473
1474 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1475 wpa_config_set_quoted(ssid, "private_key_passwd",
1476 cred->private_key_passwd) < 0)
1477 return -1;
1478
1479 if (cred->phase1) {
1480 os_free(ssid->eap.phase1);
1481 ssid->eap.phase1 = os_strdup(cred->phase1);
1482 }
1483 if (cred->phase2) {
1484 os_free(ssid->eap.phase2);
1485 ssid->eap.phase2 = os_strdup(cred->phase2);
1486 }
1487
1488 if (cred->ca_cert && cred->ca_cert[0] &&
1489 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1490 return -1;
1491
1492 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1493 wpa_config_set_quoted(ssid, "domain_suffix_match",
1494 cred->domain_suffix_match) < 0)
1495 return -1;
1496
1497 ssid->eap.ocsp = cred->ocsp;
1498
1499 return 0;
1500 }
1501
1502
1503 static int interworking_connect_roaming_consortium(
1504 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1505 struct wpa_bss *bss, int only_add)
1506 {
1507 struct wpa_ssid *ssid;
1508
1509 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1510 " based on roaming consortium match", MAC2STR(bss->bssid));
1511
1512 if (already_connected(wpa_s, cred, bss)) {
1513 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1514 MAC2STR(bss->bssid));
1515 return wpa_s->current_ssid->id;
1516 }
1517
1518 remove_duplicate_network(wpa_s, cred, bss);
1519
1520 ssid = wpa_config_add_network(wpa_s->conf);
1521 if (ssid == NULL)
1522 return -1;
1523 ssid->parent_cred = cred;
1524 wpas_notify_network_added(wpa_s, ssid);
1525 wpa_config_set_network_defaults(ssid);
1526 ssid->priority = cred->priority;
1527 ssid->temporary = 1;
1528 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1529 if (ssid->ssid == NULL)
1530 goto fail;
1531 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1532 ssid->ssid_len = bss->ssid_len;
1533
1534 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1535 goto fail;
1536
1537 if (cred->eap_method == NULL) {
1538 wpa_msg(wpa_s, MSG_DEBUG,
1539 "Interworking: No EAP method set for credential using roaming consortium");
1540 goto fail;
1541 }
1542
1543 if (interworking_set_eap_params(
1544 ssid, cred,
1545 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1546 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1547 goto fail;
1548
1549 wpa_s->next_ssid = ssid;
1550 wpa_config_update_prio_list(wpa_s->conf);
1551 if (!only_add)
1552 interworking_reconnect(wpa_s);
1553
1554 return ssid->id;
1555
1556 fail:
1557 wpas_notify_network_removed(wpa_s, ssid);
1558 wpa_config_remove_network(wpa_s->conf, ssid->id);
1559 return -1;
1560 }
1561
1562
1563 static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1564 struct wpa_bss *bss, int allow_excluded,
1565 int only_add)
1566 {
1567 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1568 struct wpa_ssid *ssid;
1569 struct nai_realm *realm;
1570 struct nai_realm_eap *eap = NULL;
1571 u16 count, i;
1572 char buf[100];
1573 int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1574 const char *name;
1575
1576 if (wpa_s->conf->cred == NULL || bss == NULL)
1577 return -1;
1578 if (disallowed_bssid(wpa_s, bss->bssid) ||
1579 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1580 wpa_msg(wpa_s, MSG_DEBUG,
1581 "Interworking: Reject connection to disallowed BSS "
1582 MACSTR, MAC2STR(bss->bssid));
1583 return -1;
1584 }
1585
1586 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1587 " for connection (allow_excluded=%d)",
1588 MAC2STR(bss->bssid), allow_excluded);
1589
1590 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1591 /*
1592 * We currently support only HS 2.0 networks and those are
1593 * required to use WPA2-Enterprise.
1594 */
1595 wpa_msg(wpa_s, MSG_DEBUG,
1596 "Interworking: Network does not use RSN");
1597 return -1;
1598 }
1599
1600 cred_rc = interworking_credentials_available_roaming_consortium(
1601 wpa_s, bss, 0, excl);
1602 if (cred_rc) {
1603 wpa_msg(wpa_s, MSG_DEBUG,
1604 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1605 cred_rc->priority, cred_rc->sp_priority);
1606 if (allow_excluded && excl && !(*excl))
1607 excl = NULL;
1608 }
1609
1610 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1611 if (cred) {
1612 wpa_msg(wpa_s, MSG_DEBUG,
1613 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1614 cred->priority, cred->sp_priority);
1615 if (allow_excluded && excl && !(*excl))
1616 excl = NULL;
1617 }
1618
1619 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1620 excl);
1621 if (cred_3gpp) {
1622 wpa_msg(wpa_s, MSG_DEBUG,
1623 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1624 cred_3gpp->priority, cred_3gpp->sp_priority);
1625 if (allow_excluded && excl && !(*excl))
1626 excl = NULL;
1627 }
1628
1629 if (!cred_rc && !cred && !cred_3gpp) {
1630 wpa_msg(wpa_s, MSG_DEBUG,
1631 "Interworking: No full credential matches - consider options without BW(etc.) limits");
1632 cred_rc = interworking_credentials_available_roaming_consortium(
1633 wpa_s, bss, 1, excl);
1634 if (cred_rc) {
1635 wpa_msg(wpa_s, MSG_DEBUG,
1636 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1637 cred_rc->priority, cred_rc->sp_priority);
1638 if (allow_excluded && excl && !(*excl))
1639 excl = NULL;
1640 }
1641
1642 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1643 excl);
1644 if (cred) {
1645 wpa_msg(wpa_s, MSG_DEBUG,
1646 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1647 cred->priority, cred->sp_priority);
1648 if (allow_excluded && excl && !(*excl))
1649 excl = NULL;
1650 }
1651
1652 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1653 1, excl);
1654 if (cred_3gpp) {
1655 wpa_msg(wpa_s, MSG_DEBUG,
1656 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1657 cred_3gpp->priority, cred_3gpp->sp_priority);
1658 if (allow_excluded && excl && !(*excl))
1659 excl = NULL;
1660 }
1661 }
1662
1663 if (cred_rc &&
1664 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1665 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1666 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1667 bss, only_add);
1668
1669 if (cred_3gpp &&
1670 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1671 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1672 only_add);
1673 }
1674
1675 if (cred == NULL) {
1676 wpa_msg(wpa_s, MSG_DEBUG,
1677 "Interworking: No matching credentials found for "
1678 MACSTR, MAC2STR(bss->bssid));
1679 return -1;
1680 }
1681
1682 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1683 &count);
1684 if (realm == NULL) {
1685 wpa_msg(wpa_s, MSG_DEBUG,
1686 "Interworking: Could not parse NAI Realm list from "
1687 MACSTR, MAC2STR(bss->bssid));
1688 return -1;
1689 }
1690
1691 for (i = 0; i < count; i++) {
1692 if (!nai_realm_match(&realm[i], cred->realm))
1693 continue;
1694 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1695 if (eap)
1696 break;
1697 }
1698
1699 if (!eap) {
1700 wpa_msg(wpa_s, MSG_DEBUG,
1701 "Interworking: No matching credentials and EAP method found for "
1702 MACSTR, MAC2STR(bss->bssid));
1703 nai_realm_free(realm, count);
1704 return -1;
1705 }
1706
1707 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1708 MAC2STR(bss->bssid));
1709
1710 if (already_connected(wpa_s, cred, bss)) {
1711 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1712 MAC2STR(bss->bssid));
1713 nai_realm_free(realm, count);
1714 return 0;
1715 }
1716
1717 remove_duplicate_network(wpa_s, cred, bss);
1718
1719 ssid = wpa_config_add_network(wpa_s->conf);
1720 if (ssid == NULL) {
1721 nai_realm_free(realm, count);
1722 return -1;
1723 }
1724 ssid->parent_cred = cred;
1725 wpas_notify_network_added(wpa_s, ssid);
1726 wpa_config_set_network_defaults(ssid);
1727 ssid->priority = cred->priority;
1728 ssid->temporary = 1;
1729 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1730 if (ssid->ssid == NULL)
1731 goto fail;
1732 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1733 ssid->ssid_len = bss->ssid_len;
1734
1735 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1736 goto fail;
1737
1738 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1739 eap->method), 0) < 0)
1740 goto fail;
1741
1742 switch (eap->method) {
1743 case EAP_TYPE_TTLS:
1744 if (eap->inner_method) {
1745 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1746 eap_get_name(EAP_VENDOR_IETF,
1747 eap->inner_method));
1748 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1749 goto fail;
1750 break;
1751 }
1752 switch (eap->inner_non_eap) {
1753 case NAI_REALM_INNER_NON_EAP_PAP:
1754 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1755 0)
1756 goto fail;
1757 break;
1758 case NAI_REALM_INNER_NON_EAP_CHAP:
1759 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1760 < 0)
1761 goto fail;
1762 break;
1763 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1764 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1765 0) < 0)
1766 goto fail;
1767 break;
1768 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1769 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1770 0) < 0)
1771 goto fail;
1772 break;
1773 default:
1774 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1775 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1776 0) < 0)
1777 goto fail;
1778 break;
1779 }
1780 break;
1781 case EAP_TYPE_PEAP:
1782 case EAP_TYPE_FAST:
1783 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1784 0) < 0)
1785 goto fail;
1786 if (wpa_config_set(ssid, "pac_file",
1787 "\"blob://pac_interworking\"", 0) < 0)
1788 goto fail;
1789 name = eap_get_name(EAP_VENDOR_IETF,
1790 eap->inner_method ? eap->inner_method :
1791 EAP_TYPE_MSCHAPV2);
1792 if (name == NULL)
1793 goto fail;
1794 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1795 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1796 goto fail;
1797 break;
1798 case EAP_TYPE_TLS:
1799 break;
1800 }
1801
1802 if (interworking_set_eap_params(ssid, cred,
1803 eap->method == EAP_TYPE_TTLS) < 0)
1804 goto fail;
1805
1806 nai_realm_free(realm, count);
1807
1808 wpa_s->next_ssid = ssid;
1809 wpa_config_update_prio_list(wpa_s->conf);
1810 if (!only_add)
1811 interworking_reconnect(wpa_s);
1812
1813 return ssid->id;
1814
1815 fail:
1816 wpas_notify_network_removed(wpa_s, ssid);
1817 wpa_config_remove_network(wpa_s->conf, ssid->id);
1818 nai_realm_free(realm, count);
1819 return -1;
1820 }
1821
1822
1823 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1824 int only_add)
1825 {
1826 return interworking_connect_helper(wpa_s, bss, 1, only_add);
1827 }
1828
1829
1830 #ifdef PCSC_FUNCS
1831 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1832 {
1833 size_t len;
1834
1835 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1836 return 0;
1837
1838 len = sizeof(wpa_s->imsi) - 1;
1839 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1840 scard_deinit(wpa_s->scard);
1841 wpa_s->scard = NULL;
1842 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1843 return -1;
1844 }
1845 wpa_s->imsi[len] = '\0';
1846 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1847 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1848 wpa_s->imsi, wpa_s->mnc_len);
1849
1850 return 0;
1851 }
1852 #endif /* PCSC_FUNCS */
1853
1854
1855 static struct wpa_cred * interworking_credentials_available_3gpp(
1856 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1857 int *excluded)
1858 {
1859 struct wpa_cred *selected = NULL;
1860 #ifdef INTERWORKING_3GPP
1861 struct wpa_cred *cred;
1862 int ret;
1863 int is_excluded = 0;
1864
1865 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1866 wpa_msg(wpa_s, MSG_DEBUG,
1867 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1868 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1869 return NULL;
1870 }
1871
1872 #ifdef CONFIG_EAP_PROXY
1873 if (!wpa_s->imsi[0]) {
1874 size_t len;
1875 wpa_msg(wpa_s, MSG_DEBUG,
1876 "Interworking: IMSI not available - try to read again through eap_proxy");
1877 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1878 wpa_s->imsi,
1879 &len);
1880 if (wpa_s->mnc_len > 0) {
1881 wpa_s->imsi[len] = '\0';
1882 wpa_msg(wpa_s, MSG_DEBUG,
1883 "eap_proxy: IMSI %s (MNC length %d)",
1884 wpa_s->imsi, wpa_s->mnc_len);
1885 } else {
1886 wpa_msg(wpa_s, MSG_DEBUG,
1887 "eap_proxy: IMSI not available");
1888 }
1889 }
1890 #endif /* CONFIG_EAP_PROXY */
1891
1892 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1893 char *sep;
1894 const char *imsi;
1895 int mnc_len;
1896 char imsi_buf[16];
1897 size_t msin_len;
1898
1899 #ifdef PCSC_FUNCS
1900 if (cred->pcsc && wpa_s->scard) {
1901 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1902 continue;
1903 imsi = wpa_s->imsi;
1904 mnc_len = wpa_s->mnc_len;
1905 goto compare;
1906 }
1907 #endif /* PCSC_FUNCS */
1908 #ifdef CONFIG_EAP_PROXY
1909 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1910 imsi = wpa_s->imsi;
1911 mnc_len = wpa_s->mnc_len;
1912 goto compare;
1913 }
1914 #endif /* CONFIG_EAP_PROXY */
1915
1916 if (cred->imsi == NULL || !cred->imsi[0] ||
1917 (!wpa_s->conf->external_sim &&
1918 (cred->milenage == NULL || !cred->milenage[0])))
1919 continue;
1920
1921 sep = os_strchr(cred->imsi, '-');
1922 if (sep == NULL ||
1923 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1924 continue;
1925 mnc_len = sep - cred->imsi - 3;
1926 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1927 sep++;
1928 msin_len = os_strlen(cred->imsi);
1929 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1930 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1931 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1932 imsi_buf[3 + mnc_len + msin_len] = '\0';
1933 imsi = imsi_buf;
1934
1935 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1936 compare:
1937 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1938 wpa_msg(wpa_s, MSG_DEBUG,
1939 "Interworking: Parsing 3GPP info from " MACSTR,
1940 MAC2STR(bss->bssid));
1941 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1942 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
1943 ret ? "" : "not ");
1944 if (ret) {
1945 if (cred_no_required_oi_match(cred, bss))
1946 continue;
1947 if (!ignore_bw &&
1948 cred_below_min_backhaul(wpa_s, cred, bss))
1949 continue;
1950 if (!ignore_bw &&
1951 cred_over_max_bss_load(wpa_s, cred, bss))
1952 continue;
1953 if (!ignore_bw &&
1954 cred_conn_capab_missing(wpa_s, cred, bss))
1955 continue;
1956 if (cred_excluded_ssid(cred, bss)) {
1957 if (excluded == NULL)
1958 continue;
1959 if (selected == NULL) {
1960 selected = cred;
1961 is_excluded = 1;
1962 }
1963 } else {
1964 if (selected == NULL || is_excluded ||
1965 cred_prio_cmp(selected, cred) < 0) {
1966 selected = cred;
1967 is_excluded = 0;
1968 }
1969 }
1970 }
1971 }
1972
1973 if (excluded)
1974 *excluded = is_excluded;
1975 #endif /* INTERWORKING_3GPP */
1976 return selected;
1977 }
1978
1979
1980 static struct wpa_cred * interworking_credentials_available_realm(
1981 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1982 int *excluded)
1983 {
1984 struct wpa_cred *cred, *selected = NULL;
1985 struct nai_realm *realm;
1986 u16 count, i;
1987 int is_excluded = 0;
1988
1989 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1990 return NULL;
1991
1992 if (wpa_s->conf->cred == NULL)
1993 return NULL;
1994
1995 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1996 MACSTR, MAC2STR(bss->bssid));
1997 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1998 if (realm == NULL) {
1999 wpa_msg(wpa_s, MSG_DEBUG,
2000 "Interworking: Could not parse NAI Realm list from "
2001 MACSTR, MAC2STR(bss->bssid));
2002 return NULL;
2003 }
2004
2005 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2006 if (cred->realm == NULL)
2007 continue;
2008
2009 for (i = 0; i < count; i++) {
2010 if (!nai_realm_match(&realm[i], cred->realm))
2011 continue;
2012 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2013 if (cred_no_required_oi_match(cred, bss))
2014 continue;
2015 if (!ignore_bw &&
2016 cred_below_min_backhaul(wpa_s, cred, bss))
2017 continue;
2018 if (!ignore_bw &&
2019 cred_over_max_bss_load(wpa_s, cred, bss))
2020 continue;
2021 if (!ignore_bw &&
2022 cred_conn_capab_missing(wpa_s, cred, bss))
2023 continue;
2024 if (cred_excluded_ssid(cred, bss)) {
2025 if (excluded == NULL)
2026 continue;
2027 if (selected == NULL) {
2028 selected = cred;
2029 is_excluded = 1;
2030 }
2031 } else {
2032 if (selected == NULL || is_excluded ||
2033 cred_prio_cmp(selected, cred) < 0)
2034 {
2035 selected = cred;
2036 is_excluded = 0;
2037 }
2038 }
2039 break;
2040 } else {
2041 wpa_msg(wpa_s, MSG_DEBUG,
2042 "Interworking: realm-find-eap returned false");
2043 }
2044 }
2045 }
2046
2047 nai_realm_free(realm, count);
2048
2049 if (excluded)
2050 *excluded = is_excluded;
2051
2052 return selected;
2053 }
2054
2055
2056 static struct wpa_cred * interworking_credentials_available_helper(
2057 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2058 int *excluded)
2059 {
2060 struct wpa_cred *cred, *cred2;
2061 int excluded1, excluded2 = 0;
2062
2063 if (disallowed_bssid(wpa_s, bss->bssid) ||
2064 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2065 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2066 MACSTR, MAC2STR(bss->bssid));
2067 return NULL;
2068 }
2069
2070 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2071 &excluded1);
2072 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2073 &excluded2);
2074 if (cred && cred2 &&
2075 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2076 cred = cred2;
2077 excluded1 = excluded2;
2078 }
2079 if (!cred) {
2080 cred = cred2;
2081 excluded1 = excluded2;
2082 }
2083
2084 cred2 = interworking_credentials_available_roaming_consortium(
2085 wpa_s, bss, ignore_bw, &excluded2);
2086 if (cred && cred2 &&
2087 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2088 cred = cred2;
2089 excluded1 = excluded2;
2090 }
2091 if (!cred) {
2092 cred = cred2;
2093 excluded1 = excluded2;
2094 }
2095
2096 if (excluded)
2097 *excluded = excluded1;
2098 return cred;
2099 }
2100
2101
2102 static struct wpa_cred * interworking_credentials_available(
2103 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2104 {
2105 struct wpa_cred *cred;
2106
2107 if (excluded)
2108 *excluded = 0;
2109 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2110 excluded);
2111 if (cred)
2112 return cred;
2113 return interworking_credentials_available_helper(wpa_s, bss, 1,
2114 excluded);
2115 }
2116
2117
2118 int domain_name_list_contains(struct wpabuf *domain_names,
2119 const char *domain, int exact_match)
2120 {
2121 const u8 *pos, *end;
2122 size_t len;
2123
2124 len = os_strlen(domain);
2125 pos = wpabuf_head(domain_names);
2126 end = pos + wpabuf_len(domain_names);
2127
2128 while (pos + 1 < end) {
2129 if (pos + 1 + pos[0] > end)
2130 break;
2131
2132 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2133 pos + 1, pos[0]);
2134 if (pos[0] == len &&
2135 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2136 return 1;
2137 if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2138 const char *ap = (const char *) (pos + 1);
2139 int offset = pos[0] - len;
2140 if (os_strncasecmp(domain, ap + offset, len) == 0)
2141 return 1;
2142 }
2143
2144 pos += 1 + pos[0];
2145 }
2146
2147 return 0;
2148 }
2149
2150
2151 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2152 struct wpa_cred *cred,
2153 struct wpabuf *domain_names)
2154 {
2155 size_t i;
2156 int ret = -1;
2157 #ifdef INTERWORKING_3GPP
2158 char nai[100], *realm;
2159
2160 char *imsi = NULL;
2161 int mnc_len = 0;
2162 if (cred->imsi)
2163 imsi = cred->imsi;
2164 #ifdef PCSC_FUNCS
2165 else if (cred->pcsc && wpa_s->scard) {
2166 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2167 return -1;
2168 imsi = wpa_s->imsi;
2169 mnc_len = wpa_s->mnc_len;
2170 }
2171 #endif /* PCSC_FUNCS */
2172 #ifdef CONFIG_EAP_PROXY
2173 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2174 imsi = wpa_s->imsi;
2175 mnc_len = wpa_s->mnc_len;
2176 }
2177 #endif /* CONFIG_EAP_PROXY */
2178 if (domain_names &&
2179 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2180 realm = os_strchr(nai, '@');
2181 if (realm)
2182 realm++;
2183 wpa_msg(wpa_s, MSG_DEBUG,
2184 "Interworking: Search for match with SIM/USIM domain %s",
2185 realm);
2186 if (realm &&
2187 domain_name_list_contains(domain_names, realm, 1))
2188 return 1;
2189 if (realm)
2190 ret = 0;
2191 }
2192 #endif /* INTERWORKING_3GPP */
2193
2194 if (domain_names == NULL || cred->domain == NULL)
2195 return ret;
2196
2197 for (i = 0; i < cred->num_domain; i++) {
2198 wpa_msg(wpa_s, MSG_DEBUG,
2199 "Interworking: Search for match with home SP FQDN %s",
2200 cred->domain[i]);
2201 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2202 return 1;
2203 }
2204
2205 return 0;
2206 }
2207
2208
2209 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2210 struct wpabuf *domain_names)
2211 {
2212 struct wpa_cred *cred;
2213
2214 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2215 return -1;
2216
2217 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2218 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2219 if (res)
2220 return res;
2221 }
2222
2223 return 0;
2224 }
2225
2226
2227 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2228 {
2229 struct wpa_bss *bss;
2230 struct wpa_ssid *ssid;
2231
2232 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2233 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2234 if (wpas_network_disabled(wpa_s, ssid) ||
2235 ssid->mode != WPAS_MODE_INFRA)
2236 continue;
2237 if (ssid->ssid_len != bss->ssid_len ||
2238 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2239 0)
2240 continue;
2241 /*
2242 * TODO: Consider more accurate matching of security
2243 * configuration similarly to what is done in events.c
2244 */
2245 return 1;
2246 }
2247 }
2248
2249 return 0;
2250 }
2251
2252
2253 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2254 struct roaming_partner *partner,
2255 struct wpabuf *domain_names)
2256 {
2257 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2258 partner->fqdn, partner->exact_match, partner->priority,
2259 partner->country);
2260 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2261 wpabuf_head(domain_names),
2262 wpabuf_len(domain_names));
2263 if (!domain_name_list_contains(domain_names, partner->fqdn,
2264 partner->exact_match))
2265 return 0;
2266 /* TODO: match Country */
2267 return 1;
2268 }
2269
2270
2271 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2272 struct wpa_bss *bss)
2273 {
2274 size_t i;
2275
2276 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2277 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2278 return 128; /* cannot check preference with domain name */
2279 }
2280
2281 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2282 {
2283 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2284 return 0; /* max preference for home SP network */
2285 }
2286
2287 for (i = 0; i < cred->num_roaming_partner; i++) {
2288 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2289 bss->anqp->domain_name)) {
2290 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2291 cred->roaming_partner[i].priority);
2292 return cred->roaming_partner[i].priority;
2293 }
2294 }
2295
2296 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2297 return 128;
2298 }
2299
2300
2301 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2302 struct wpa_bss *selected,
2303 struct wpa_cred *cred)
2304 {
2305 struct wpa_bss *bss;
2306 u8 best_prio, prio;
2307 struct wpa_cred *cred2;
2308
2309 /*
2310 * Check if any other BSS is operated by a more preferred roaming
2311 * partner.
2312 */
2313
2314 best_prio = roaming_prio(wpa_s, cred, selected);
2315 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2316 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2317 cred->id);
2318
2319 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2320 if (bss == selected)
2321 continue;
2322 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2323 if (!cred2)
2324 continue;
2325 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2326 continue;
2327 prio = roaming_prio(wpa_s, cred2, bss);
2328 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2329 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2330 cred2->id);
2331 if (prio < best_prio) {
2332 int bh1, bh2, load1, load2, conn1, conn2;
2333 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2334 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2335 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2336 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2337 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2338 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2339 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2340 bh1, load1, conn1, bh2, load2, conn2);
2341 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2342 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2343 best_prio = prio;
2344 selected = bss;
2345 }
2346 }
2347 }
2348
2349 return selected;
2350 }
2351
2352
2353 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2354 {
2355 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2356 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2357 unsigned int count = 0;
2358 const char *type;
2359 int res;
2360 struct wpa_cred *cred, *selected_cred = NULL;
2361 struct wpa_cred *selected_home_cred = NULL;
2362 struct wpa_cred *selected2_cred = NULL;
2363 struct wpa_cred *selected2_home_cred = NULL;
2364
2365 wpa_s->network_select = 0;
2366
2367 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2368 wpa_s->auto_select);
2369 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2370 int excluded = 0;
2371 int bh, bss_load, conn_capab;
2372 cred = interworking_credentials_available(wpa_s, bss,
2373 &excluded);
2374 if (!cred)
2375 continue;
2376
2377 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2378 /*
2379 * We currently support only HS 2.0 networks and those
2380 * are required to use WPA2-Enterprise.
2381 */
2382 wpa_msg(wpa_s, MSG_DEBUG,
2383 "Interworking: Credential match with " MACSTR
2384 " but network does not use RSN",
2385 MAC2STR(bss->bssid));
2386 continue;
2387 }
2388 if (!excluded)
2389 count++;
2390 res = interworking_home_sp(wpa_s, bss->anqp ?
2391 bss->anqp->domain_name : NULL);
2392 if (res > 0)
2393 type = "home";
2394 else if (res == 0)
2395 type = "roaming";
2396 else
2397 type = "unknown";
2398 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2399 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2400 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2401 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2402 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2403 MAC2STR(bss->bssid), type,
2404 bh ? " below_min_backhaul=1" : "",
2405 bss_load ? " over_max_bss_load=1" : "",
2406 conn_capab ? " conn_capab_missing=1" : "",
2407 cred->id, cred->priority, cred->sp_priority);
2408 if (excluded)
2409 continue;
2410 if (wpa_s->auto_select ||
2411 (wpa_s->conf->auto_interworking &&
2412 wpa_s->auto_network_select)) {
2413 if (bh || bss_load || conn_capab) {
2414 if (selected2_cred == NULL ||
2415 cred_prio_cmp(cred, selected2_cred) > 0) {
2416 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2417 selected2 = bss;
2418 selected2_cred = cred;
2419 }
2420 if (res > 0 &&
2421 (selected2_home_cred == NULL ||
2422 cred_prio_cmp(cred, selected2_home_cred) >
2423 0)) {
2424 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2425 selected2_home = bss;
2426 selected2_home_cred = cred;
2427 }
2428 } else {
2429 if (selected_cred == NULL ||
2430 cred_prio_cmp(cred, selected_cred) > 0) {
2431 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2432 selected = bss;
2433 selected_cred = cred;
2434 }
2435 if (res > 0 &&
2436 (selected_home_cred == NULL ||
2437 cred_prio_cmp(cred, selected_home_cred) >
2438 0)) {
2439 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2440 selected_home = bss;
2441 selected_home_cred = cred;
2442 }
2443 }
2444 }
2445 }
2446
2447 if (selected_home && selected_home != selected &&
2448 selected_home_cred &&
2449 (selected_cred == NULL ||
2450 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2451 /* Prefer network operated by the Home SP */
2452 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2453 selected = selected_home;
2454 selected_cred = selected_home_cred;
2455 }
2456
2457 if (!selected) {
2458 if (selected2_home) {
2459 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2460 selected = selected2_home;
2461 selected_cred = selected2_home_cred;
2462 } else if (selected2) {
2463 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2464 selected = selected2;
2465 selected_cred = selected2_cred;
2466 }
2467 }
2468
2469 if (count == 0) {
2470 /*
2471 * No matching network was found based on configured
2472 * credentials. Check whether any of the enabled network blocks
2473 * have matching APs.
2474 */
2475 if (interworking_find_network_match(wpa_s)) {
2476 wpa_msg(wpa_s, MSG_DEBUG,
2477 "Interworking: Possible BSS match for enabled network configurations");
2478 if (wpa_s->auto_select) {
2479 interworking_reconnect(wpa_s);
2480 return;
2481 }
2482 }
2483
2484 if (wpa_s->auto_network_select) {
2485 wpa_msg(wpa_s, MSG_DEBUG,
2486 "Interworking: Continue scanning after ANQP fetch");
2487 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2488 0);
2489 return;
2490 }
2491
2492 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2493 "with matching credentials found");
2494 if (wpa_s->wpa_state == WPA_SCANNING)
2495 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2496 }
2497
2498 if (selected) {
2499 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2500 MAC2STR(selected->bssid));
2501 selected = pick_best_roaming_partner(wpa_s, selected,
2502 selected_cred);
2503 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2504 " (after best roaming partner selection)",
2505 MAC2STR(selected->bssid));
2506 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2507 MAC2STR(selected->bssid));
2508 interworking_connect(wpa_s, selected, 0);
2509 }
2510 }
2511
2512
2513 static struct wpa_bss_anqp *
2514 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2515 {
2516 struct wpa_bss *other;
2517
2518 if (is_zero_ether_addr(bss->hessid))
2519 return NULL; /* Cannot be in the same homegenous ESS */
2520
2521 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2522 if (other == bss)
2523 continue;
2524 if (other->anqp == NULL)
2525 continue;
2526 if (other->anqp->roaming_consortium == NULL &&
2527 other->anqp->nai_realm == NULL &&
2528 other->anqp->anqp_3gpp == NULL &&
2529 other->anqp->domain_name == NULL)
2530 continue;
2531 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2532 continue;
2533 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2534 continue;
2535 if (bss->ssid_len != other->ssid_len ||
2536 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2537 continue;
2538
2539 wpa_msg(wpa_s, MSG_DEBUG,
2540 "Interworking: Share ANQP data with already fetched BSSID "
2541 MACSTR " and " MACSTR,
2542 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2543 other->anqp->users++;
2544 return other->anqp;
2545 }
2546
2547 return NULL;
2548 }
2549
2550
2551 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2552 {
2553 struct wpa_bss *bss;
2554 int found = 0;
2555 const u8 *ie;
2556
2557 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2558 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2559 wpa_s->fetch_anqp_in_progress,
2560 wpa_s->fetch_osu_icon_in_progress);
2561
2562 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2563 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2564 return;
2565 }
2566
2567 if (wpa_s->fetch_osu_icon_in_progress) {
2568 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2569 hs20_next_osu_icon(wpa_s);
2570 return;
2571 }
2572
2573 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2574 if (!(bss->caps & IEEE80211_CAP_ESS))
2575 continue;
2576 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2577 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2578 continue; /* AP does not support Interworking */
2579 if (disallowed_bssid(wpa_s, bss->bssid) ||
2580 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2581 continue; /* Disallowed BSS */
2582
2583 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2584 if (bss->anqp == NULL) {
2585 bss->anqp = interworking_match_anqp_info(wpa_s,
2586 bss);
2587 if (bss->anqp) {
2588 /* Shared data already fetched */
2589 continue;
2590 }
2591 bss->anqp = wpa_bss_anqp_alloc();
2592 if (bss->anqp == NULL)
2593 break;
2594 }
2595 found++;
2596 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2597 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2598 MACSTR, MAC2STR(bss->bssid));
2599 interworking_anqp_send_req(wpa_s, bss);
2600 break;
2601 }
2602 }
2603
2604 if (found == 0) {
2605 if (wpa_s->fetch_osu_info) {
2606 if (wpa_s->num_prov_found == 0 &&
2607 wpa_s->fetch_osu_waiting_scan &&
2608 wpa_s->num_osu_scans < 3) {
2609 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2610 hs20_start_osu_scan(wpa_s);
2611 return;
2612 }
2613 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2614 hs20_osu_icon_fetch(wpa_s);
2615 return;
2616 }
2617 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2618 wpa_s->fetch_anqp_in_progress = 0;
2619 if (wpa_s->network_select)
2620 interworking_select_network(wpa_s);
2621 }
2622 }
2623
2624
2625 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2626 {
2627 struct wpa_bss *bss;
2628
2629 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2630 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2631
2632 wpa_s->fetch_anqp_in_progress = 1;
2633
2634 /*
2635 * Start actual ANQP operation from eloop call to make sure the loop
2636 * does not end up using excessive recursion.
2637 */
2638 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2639 }
2640
2641
2642 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2643 {
2644 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2645 return 0;
2646
2647 wpa_s->network_select = 0;
2648 wpa_s->fetch_all_anqp = 1;
2649 wpa_s->fetch_osu_info = 0;
2650
2651 interworking_start_fetch_anqp(wpa_s);
2652
2653 return 0;
2654 }
2655
2656
2657 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2658 {
2659 if (!wpa_s->fetch_anqp_in_progress)
2660 return;
2661
2662 wpa_s->fetch_anqp_in_progress = 0;
2663 }
2664
2665
2666 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2667 u16 info_ids[], size_t num_ids, u32 subtypes)
2668 {
2669 struct wpabuf *buf;
2670 struct wpabuf *hs20_buf = NULL;
2671 int ret = 0;
2672 int freq;
2673 struct wpa_bss *bss;
2674 int res;
2675
2676 freq = wpa_s->assoc_freq;
2677 bss = wpa_bss_get_bssid(wpa_s, dst);
2678 if (bss) {
2679 wpa_bss_anqp_unshare_alloc(bss);
2680 freq = bss->freq;
2681 }
2682 if (freq <= 0)
2683 return -1;
2684
2685 wpa_msg(wpa_s, MSG_DEBUG,
2686 "ANQP: Query Request to " MACSTR " for %u id(s)",
2687 MAC2STR(dst), (unsigned int) num_ids);
2688
2689 #ifdef CONFIG_HS20
2690 if (subtypes != 0) {
2691 hs20_buf = wpabuf_alloc(100);
2692 if (hs20_buf == NULL)
2693 return -1;
2694 hs20_put_anqp_req(subtypes, NULL, 0, hs20_buf);
2695 }
2696 #endif /* CONFIG_HS20 */
2697
2698 buf = anqp_build_req(info_ids, num_ids, hs20_buf);
2699 wpabuf_free(hs20_buf);
2700 if (buf == NULL)
2701 return -1;
2702
2703 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2704 if (res < 0) {
2705 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2706 wpabuf_free(buf);
2707 ret = -1;
2708 } else {
2709 wpa_msg(wpa_s, MSG_DEBUG,
2710 "ANQP: Query started with dialog token %u", res);
2711 }
2712
2713 return ret;
2714 }
2715
2716
2717 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2718 struct wpa_bss *bss, const u8 *sa,
2719 u16 info_id,
2720 const u8 *data, size_t slen)
2721 {
2722 const u8 *pos = data;
2723 struct wpa_bss_anqp *anqp = NULL;
2724 #ifdef CONFIG_HS20
2725 u8 type;
2726 #endif /* CONFIG_HS20 */
2727
2728 if (bss)
2729 anqp = bss->anqp;
2730
2731 switch (info_id) {
2732 case ANQP_CAPABILITY_LIST:
2733 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2734 " ANQP Capability list", MAC2STR(sa));
2735 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2736 pos, slen);
2737 if (anqp) {
2738 wpabuf_free(anqp->capability_list);
2739 anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2740 }
2741 break;
2742 case ANQP_VENUE_NAME:
2743 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2744 " Venue Name", MAC2STR(sa));
2745 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2746 if (anqp) {
2747 wpabuf_free(anqp->venue_name);
2748 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2749 }
2750 break;
2751 case ANQP_NETWORK_AUTH_TYPE:
2752 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2753 " Network Authentication Type information",
2754 MAC2STR(sa));
2755 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2756 "Type", pos, slen);
2757 if (anqp) {
2758 wpabuf_free(anqp->network_auth_type);
2759 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2760 }
2761 break;
2762 case ANQP_ROAMING_CONSORTIUM:
2763 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2764 " Roaming Consortium list", MAC2STR(sa));
2765 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2766 pos, slen);
2767 if (anqp) {
2768 wpabuf_free(anqp->roaming_consortium);
2769 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2770 }
2771 break;
2772 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2773 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2774 " IP Address Type Availability information",
2775 MAC2STR(sa));
2776 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2777 pos, slen);
2778 if (anqp) {
2779 wpabuf_free(anqp->ip_addr_type_availability);
2780 anqp->ip_addr_type_availability =
2781 wpabuf_alloc_copy(pos, slen);
2782 }
2783 break;
2784 case ANQP_NAI_REALM:
2785 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2786 " NAI Realm list", MAC2STR(sa));
2787 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2788 if (anqp) {
2789 wpabuf_free(anqp->nai_realm);
2790 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2791 }
2792 break;
2793 case ANQP_3GPP_CELLULAR_NETWORK:
2794 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2795 " 3GPP Cellular Network information", MAC2STR(sa));
2796 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2797 pos, slen);
2798 if (anqp) {
2799 wpabuf_free(anqp->anqp_3gpp);
2800 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2801 }
2802 break;
2803 case ANQP_DOMAIN_NAME:
2804 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2805 " Domain Name list", MAC2STR(sa));
2806 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2807 if (anqp) {
2808 wpabuf_free(anqp->domain_name);
2809 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2810 }
2811 break;
2812 case ANQP_VENDOR_SPECIFIC:
2813 if (slen < 3)
2814 return;
2815
2816 switch (WPA_GET_BE24(pos)) {
2817 #ifdef CONFIG_HS20
2818 case OUI_WFA:
2819 pos += 3;
2820 slen -= 3;
2821
2822 if (slen < 1)
2823 return;
2824 type = *pos++;
2825 slen--;
2826
2827 switch (type) {
2828 case HS20_ANQP_OUI_TYPE:
2829 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
2830 pos, slen);
2831 break;
2832 default:
2833 wpa_msg(wpa_s, MSG_DEBUG,
2834 "HS20: Unsupported ANQP vendor type %u",
2835 type);
2836 break;
2837 }
2838 break;
2839 #endif /* CONFIG_HS20 */
2840 default:
2841 wpa_msg(wpa_s, MSG_DEBUG,
2842 "Interworking: Unsupported vendor-specific ANQP OUI %06x",
2843 WPA_GET_BE24(pos));
2844 return;
2845 }
2846 break;
2847 default:
2848 wpa_msg(wpa_s, MSG_DEBUG,
2849 "Interworking: Unsupported ANQP Info ID %u", info_id);
2850 break;
2851 }
2852 }
2853
2854
2855 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2856 enum gas_query_result result,
2857 const struct wpabuf *adv_proto,
2858 const struct wpabuf *resp, u16 status_code)
2859 {
2860 struct wpa_supplicant *wpa_s = ctx;
2861 const u8 *pos;
2862 const u8 *end;
2863 u16 info_id;
2864 u16 slen;
2865 struct wpa_bss *bss = NULL, *tmp;
2866 const char *anqp_result = "SUCCESS";
2867
2868 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2869 " dialog_token=%u result=%d status_code=%u",
2870 MAC2STR(dst), dialog_token, result, status_code);
2871 if (result != GAS_QUERY_SUCCESS) {
2872 if (wpa_s->fetch_osu_icon_in_progress)
2873 hs20_icon_fetch_failed(wpa_s);
2874 anqp_result = "FAILURE";
2875 goto out;
2876 }
2877
2878 pos = wpabuf_head(adv_proto);
2879 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2880 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2881 wpa_msg(wpa_s, MSG_DEBUG,
2882 "ANQP: Unexpected Advertisement Protocol in response");
2883 if (wpa_s->fetch_osu_icon_in_progress)
2884 hs20_icon_fetch_failed(wpa_s);
2885 anqp_result = "INVALID_FRAME";
2886 goto out;
2887 }
2888
2889 /*
2890 * If possible, select the BSS entry based on which BSS entry was used
2891 * for the request. This can help in cases where multiple BSS entries
2892 * may exist for the same AP.
2893 */
2894 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2895 if (tmp == wpa_s->interworking_gas_bss &&
2896 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2897 bss = tmp;
2898 break;
2899 }
2900 }
2901 if (bss == NULL)
2902 bss = wpa_bss_get_bssid(wpa_s, dst);
2903
2904 pos = wpabuf_head(resp);
2905 end = pos + wpabuf_len(resp);
2906
2907 while (pos < end) {
2908 unsigned int left = end - pos;
2909
2910 if (left < 4) {
2911 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
2912 anqp_result = "INVALID_FRAME";
2913 goto out_parse_done;
2914 }
2915 info_id = WPA_GET_LE16(pos);
2916 pos += 2;
2917 slen = WPA_GET_LE16(pos);
2918 pos += 2;
2919 left -= 4;
2920 if (left < slen) {
2921 wpa_msg(wpa_s, MSG_DEBUG,
2922 "ANQP: Invalid element length for Info ID %u",
2923 info_id);
2924 anqp_result = "INVALID_FRAME";
2925 goto out_parse_done;
2926 }
2927 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2928 slen);
2929 pos += slen;
2930 }
2931
2932 out_parse_done:
2933 hs20_notify_parse_done(wpa_s);
2934 out:
2935 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
2936 MAC2STR(dst), anqp_result);
2937 }
2938
2939
2940 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2941 struct wpa_scan_results *scan_res)
2942 {
2943 wpa_msg(wpa_s, MSG_DEBUG,
2944 "Interworking: Scan results available - start ANQP fetch");
2945 interworking_start_fetch_anqp(wpa_s);
2946 }
2947
2948
2949 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2950 int *freqs)
2951 {
2952 interworking_stop_fetch_anqp(wpa_s);
2953 wpa_s->network_select = 1;
2954 wpa_s->auto_network_select = 0;
2955 wpa_s->auto_select = !!auto_select;
2956 wpa_s->fetch_all_anqp = 0;
2957 wpa_s->fetch_osu_info = 0;
2958 wpa_msg(wpa_s, MSG_DEBUG,
2959 "Interworking: Start scan for network selection");
2960 wpa_s->scan_res_handler = interworking_scan_res_handler;
2961 wpa_s->normal_scans = 0;
2962 wpa_s->scan_req = MANUAL_SCAN_REQ;
2963 os_free(wpa_s->manual_scan_freqs);
2964 wpa_s->manual_scan_freqs = freqs;
2965 wpa_s->after_wps = 0;
2966 wpa_s->known_wps_freq = 0;
2967 wpa_supplicant_req_scan(wpa_s, 0, 0);
2968
2969 return 0;
2970 }
2971
2972
2973 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2974 enum gas_query_result result,
2975 const struct wpabuf *adv_proto,
2976 const struct wpabuf *resp, u16 status_code)
2977 {
2978 struct wpa_supplicant *wpa_s = ctx;
2979 struct wpabuf *n;
2980
2981 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2982 " dialog_token=%d status_code=%d resp_len=%d",
2983 MAC2STR(addr), dialog_token, status_code,
2984 resp ? (int) wpabuf_len(resp) : -1);
2985 if (!resp)
2986 return;
2987
2988 n = wpabuf_dup(resp);
2989 if (n == NULL)
2990 return;
2991 wpabuf_free(wpa_s->prev_gas_resp);
2992 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2993 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2994 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2995 wpa_s->last_gas_resp = n;
2996 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2997 wpa_s->last_gas_dialog_token = dialog_token;
2998 }
2999
3000
3001 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3002 const struct wpabuf *adv_proto,
3003 const struct wpabuf *query)
3004 {
3005 struct wpabuf *buf;
3006 int ret = 0;
3007 int freq;
3008 struct wpa_bss *bss;
3009 int res;
3010 size_t len;
3011 u8 query_resp_len_limit = 0;
3012
3013 freq = wpa_s->assoc_freq;
3014 bss = wpa_bss_get_bssid(wpa_s, dst);
3015 if (bss)
3016 freq = bss->freq;
3017 if (freq <= 0)
3018 return -1;
3019
3020 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3021 MAC2STR(dst), freq);
3022 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3023 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3024
3025 len = 3 + wpabuf_len(adv_proto) + 2;
3026 if (query)
3027 len += wpabuf_len(query);
3028 buf = gas_build_initial_req(0, len);
3029 if (buf == NULL)
3030 return -1;
3031
3032 /* Advertisement Protocol IE */
3033 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3034 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3035 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3036 wpabuf_put_buf(buf, adv_proto);
3037
3038 /* GAS Query */
3039 if (query) {
3040 wpabuf_put_le16(buf, wpabuf_len(query));
3041 wpabuf_put_buf(buf, query);
3042 } else
3043 wpabuf_put_le16(buf, 0);
3044
3045 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
3046 if (res < 0) {
3047 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3048 wpabuf_free(buf);
3049 ret = -1;
3050 } else
3051 wpa_msg(wpa_s, MSG_DEBUG,
3052 "GAS: Query started with dialog token %u", res);
3053
3054 return ret;
3055 }
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