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