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
cred_prio_cmp(const struct wpa_cred * a,const struct wpa_cred * b)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
interworking_reconnect(struct wpa_supplicant * wpa_s)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
anqp_build_req(u16 info_ids[],size_t num_ids,struct wpabuf * extra)97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
98 struct wpabuf *extra)
99 {
100 struct wpabuf *buf;
101 size_t i;
102 u8 *len_pos;
103
104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 (extra ? wpabuf_len(extra) : 0));
106 if (buf == NULL)
107 return NULL;
108
109 if (num_ids > 0) {
110 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
111 for (i = 0; i < num_ids; i++)
112 wpabuf_put_le16(buf, info_ids[i]);
113 gas_anqp_set_element_len(buf, len_pos);
114 }
115 if (extra)
116 wpabuf_put_buf(buf, extra);
117
118 gas_anqp_set_len(buf);
119
120 return buf;
121 }
122
123
interworking_anqp_resp_cb(void * ctx,const u8 * dst,u8 dialog_token,enum gas_query_result result,const struct wpabuf * adv_proto,const struct wpabuf * resp,u16 status_code)124 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
125 u8 dialog_token,
126 enum gas_query_result result,
127 const struct wpabuf *adv_proto,
128 const struct wpabuf *resp,
129 u16 status_code)
130 {
131 struct wpa_supplicant *wpa_s = ctx;
132
133 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
134 " dialog_token=%u result=%d status_code=%u",
135 MAC2STR(dst), dialog_token, result, status_code);
136 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
137 status_code);
138 interworking_next_anqp_fetch(wpa_s);
139 }
140
141
cred_with_roaming_consortium(struct wpa_supplicant * wpa_s)142 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
143 {
144 struct wpa_cred *cred;
145
146 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
147 if (cred->roaming_consortium_len)
148 return 1;
149 if (cred->required_roaming_consortium_len)
150 return 1;
151 if (cred->num_roaming_consortiums)
152 return 1;
153 }
154 return 0;
155 }
156
157
cred_with_3gpp(struct wpa_supplicant * wpa_s)158 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
159 {
160 struct wpa_cred *cred;
161
162 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
163 if (cred->pcsc || cred->imsi)
164 return 1;
165 }
166 return 0;
167 }
168
169
cred_with_nai_realm(struct wpa_supplicant * wpa_s)170 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
171 {
172 struct wpa_cred *cred;
173
174 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
175 if (cred->pcsc || cred->imsi)
176 continue;
177 if (!cred->eap_method)
178 return 1;
179 if (cred->realm)
180 return 1;
181 }
182 return 0;
183 }
184
185
cred_with_domain(struct wpa_supplicant * wpa_s)186 static int cred_with_domain(struct wpa_supplicant *wpa_s)
187 {
188 struct wpa_cred *cred;
189
190 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
191 if (cred->domain || cred->pcsc || cred->imsi ||
192 cred->roaming_partner)
193 return 1;
194 }
195 return 0;
196 }
197
198
199 #ifdef CONFIG_HS20
200
cred_with_min_backhaul(struct wpa_supplicant * wpa_s)201 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
202 {
203 struct wpa_cred *cred;
204
205 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
206 if (cred->min_dl_bandwidth_home ||
207 cred->min_ul_bandwidth_home ||
208 cred->min_dl_bandwidth_roaming ||
209 cred->min_ul_bandwidth_roaming)
210 return 1;
211 }
212 return 0;
213 }
214
215
cred_with_conn_capab(struct wpa_supplicant * wpa_s)216 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
217 {
218 struct wpa_cred *cred;
219
220 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
221 if (cred->num_req_conn_capab)
222 return 1;
223 }
224 return 0;
225 }
226
227 #endif /* CONFIG_HS20 */
228
229
additional_roaming_consortiums(struct wpa_bss * bss)230 static int additional_roaming_consortiums(struct wpa_bss *bss)
231 {
232 const u8 *ie;
233 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
234 if (ie == NULL || ie[1] == 0)
235 return 0;
236 return ie[2]; /* Number of ANQP OIs */
237 }
238
239
interworking_continue_anqp(void * eloop_ctx,void * sock_ctx)240 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
241 {
242 struct wpa_supplicant *wpa_s = eloop_ctx;
243 interworking_next_anqp_fetch(wpa_s);
244 }
245
246
interworking_anqp_send_req(struct wpa_supplicant * wpa_s,struct wpa_bss * bss)247 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
248 struct wpa_bss *bss)
249 {
250 struct wpabuf *buf;
251 int ret = 0;
252 int res;
253 u16 info_ids[8];
254 size_t num_info_ids = 0;
255 struct wpabuf *extra = NULL;
256 int all = wpa_s->fetch_all_anqp;
257
258 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
259 MAC2STR(bss->bssid));
260 wpa_s->interworking_gas_bss = bss;
261
262 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
263 if (all) {
264 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
265 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
266 }
267 if (all || (cred_with_roaming_consortium(wpa_s) &&
268 additional_roaming_consortiums(bss)))
269 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
270 if (all)
271 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
272 if (all || cred_with_nai_realm(wpa_s))
273 info_ids[num_info_ids++] = ANQP_NAI_REALM;
274 if (all || cred_with_3gpp(wpa_s)) {
275 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
276 wpa_supplicant_scard_init(wpa_s, NULL);
277 }
278 if (all || cred_with_domain(wpa_s))
279 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
280 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
281 (u8 *) info_ids, num_info_ids * 2);
282
283 #ifdef CONFIG_HS20
284 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
285 u8 *len_pos;
286
287 extra = wpabuf_alloc(100);
288 if (!extra)
289 return -1;
290
291 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
292 wpabuf_put_be24(extra, OUI_WFA);
293 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
294 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
295 wpabuf_put_u8(extra, 0); /* Reserved */
296 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
297 if (all)
298 wpabuf_put_u8(extra,
299 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
300 if (all || cred_with_min_backhaul(wpa_s))
301 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
302 if (all || cred_with_conn_capab(wpa_s))
303 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
304 if (all)
305 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
306 if (all) {
307 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
308 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_NAI_LIST);
309 }
310 gas_anqp_set_element_len(extra, len_pos);
311 }
312 #endif /* CONFIG_HS20 */
313
314 buf = anqp_build_req(info_ids, num_info_ids, extra);
315 wpabuf_free(extra);
316 if (buf == NULL)
317 return -1;
318
319 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, 0, 0, buf,
320 interworking_anqp_resp_cb, wpa_s);
321 if (res < 0) {
322 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
323 wpabuf_free(buf);
324 ret = -1;
325 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
326 NULL);
327 } else
328 wpa_msg(wpa_s, MSG_DEBUG,
329 "ANQP: Query started with dialog token %u", res);
330
331 return ret;
332 }
333
334
335 struct nai_realm_eap {
336 u8 method;
337 u8 inner_method;
338 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
339 u8 cred_type;
340 u8 tunneled_cred_type;
341 };
342
343 struct nai_realm {
344 u8 encoding;
345 char *realm;
346 u8 eap_count;
347 struct nai_realm_eap *eap;
348 };
349
350
nai_realm_free(struct nai_realm * realms,u16 count)351 static void nai_realm_free(struct nai_realm *realms, u16 count)
352 {
353 u16 i;
354
355 if (realms == NULL)
356 return;
357 for (i = 0; i < count; i++) {
358 os_free(realms[i].eap);
359 os_free(realms[i].realm);
360 }
361 os_free(realms);
362 }
363
364
nai_realm_parse_eap(struct nai_realm_eap * e,const u8 * pos,const u8 * end)365 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
366 const u8 *end)
367 {
368 u8 elen, auth_count, a;
369 const u8 *e_end;
370
371 if (end - pos < 3) {
372 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
373 return NULL;
374 }
375
376 elen = *pos++;
377 if (elen > end - pos || elen < 2) {
378 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
379 return NULL;
380 }
381 e_end = pos + elen;
382 e->method = *pos++;
383 auth_count = *pos++;
384 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
385 elen, e->method, auth_count);
386
387 for (a = 0; a < auth_count; a++) {
388 u8 id, len;
389
390 if (end - pos < 2) {
391 wpa_printf(MSG_DEBUG,
392 "No room for Authentication Parameter subfield header");
393 return NULL;
394 }
395
396 id = *pos++;
397 len = *pos++;
398 if (len > end - pos) {
399 wpa_printf(MSG_DEBUG,
400 "No room for Authentication Parameter subfield");
401 return NULL;
402 }
403
404 switch (id) {
405 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
406 if (len < 1)
407 break;
408 e->inner_non_eap = *pos;
409 if (e->method != EAP_TYPE_TTLS)
410 break;
411 switch (*pos) {
412 case NAI_REALM_INNER_NON_EAP_PAP:
413 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
414 break;
415 case NAI_REALM_INNER_NON_EAP_CHAP:
416 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
417 break;
418 case NAI_REALM_INNER_NON_EAP_MSCHAP:
419 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
420 break;
421 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
422 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
423 break;
424 }
425 break;
426 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
427 if (len < 1)
428 break;
429 e->inner_method = *pos;
430 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
431 e->inner_method);
432 break;
433 case NAI_REALM_EAP_AUTH_CRED_TYPE:
434 if (len < 1)
435 break;
436 e->cred_type = *pos;
437 wpa_printf(MSG_DEBUG, "Credential Type: %u",
438 e->cred_type);
439 break;
440 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
441 if (len < 1)
442 break;
443 e->tunneled_cred_type = *pos;
444 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
445 "Type: %u", e->tunneled_cred_type);
446 break;
447 default:
448 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
449 "Parameter: id=%u len=%u", id, len);
450 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
451 "Value", pos, len);
452 break;
453 }
454
455 pos += len;
456 }
457
458 return e_end;
459 }
460
461
nai_realm_parse_realm(struct nai_realm * r,const u8 * pos,const u8 * end)462 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
463 const u8 *end)
464 {
465 u16 len;
466 const u8 *f_end;
467 u8 realm_len, e;
468
469 if (end - pos < 4) {
470 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
471 "fixed fields");
472 return NULL;
473 }
474
475 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
476 pos += 2;
477 if (len > end - pos || len < 3) {
478 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
479 "(len=%u; left=%u)",
480 len, (unsigned int) (end - pos));
481 return NULL;
482 }
483 f_end = pos + len;
484
485 r->encoding = *pos++;
486 realm_len = *pos++;
487 if (realm_len > f_end - pos) {
488 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
489 "(len=%u; left=%u)",
490 realm_len, (unsigned int) (f_end - pos));
491 return NULL;
492 }
493 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
494 r->realm = dup_binstr(pos, realm_len);
495 if (r->realm == NULL)
496 return NULL;
497 pos += realm_len;
498
499 if (f_end - pos < 1) {
500 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
501 return NULL;
502 }
503 r->eap_count = *pos++;
504 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
505 if (r->eap_count * 3 > f_end - pos) {
506 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
507 return NULL;
508 }
509 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
510 if (r->eap == NULL)
511 return NULL;
512
513 for (e = 0; e < r->eap_count; e++) {
514 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
515 if (pos == NULL)
516 return NULL;
517 }
518
519 return f_end;
520 }
521
522
nai_realm_parse(struct wpabuf * anqp,u16 * count)523 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
524 {
525 struct nai_realm *realm;
526 const u8 *pos, *end;
527 u16 i, num;
528 size_t left;
529
530 if (anqp == NULL)
531 return NULL;
532 left = wpabuf_len(anqp);
533 if (left < 2)
534 return NULL;
535
536 pos = wpabuf_head_u8(anqp);
537 end = pos + left;
538 num = WPA_GET_LE16(pos);
539 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
540 pos += 2;
541 left -= 2;
542
543 if (num > left / 5) {
544 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
545 "enough data (%u octets) for that many realms",
546 num, (unsigned int) left);
547 return NULL;
548 }
549
550 realm = os_calloc(num, sizeof(struct nai_realm));
551 if (realm == NULL)
552 return NULL;
553
554 for (i = 0; i < num; i++) {
555 pos = nai_realm_parse_realm(&realm[i], pos, end);
556 if (pos == NULL) {
557 nai_realm_free(realm, num);
558 return NULL;
559 }
560 }
561
562 *count = num;
563 return realm;
564 }
565
566
nai_realm_match(struct nai_realm * realm,const char * home_realm)567 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
568 {
569 char *tmp, *pos, *end;
570 int match = 0;
571
572 if (realm->realm == NULL || home_realm == NULL)
573 return 0;
574
575 if (os_strchr(realm->realm, ';') == NULL)
576 return os_strcasecmp(realm->realm, home_realm) == 0;
577
578 tmp = os_strdup(realm->realm);
579 if (tmp == NULL)
580 return 0;
581
582 pos = tmp;
583 while (*pos) {
584 end = os_strchr(pos, ';');
585 if (end)
586 *end = '\0';
587 if (os_strcasecmp(pos, home_realm) == 0) {
588 match = 1;
589 break;
590 }
591 if (end == NULL)
592 break;
593 pos = end + 1;
594 }
595
596 os_free(tmp);
597
598 return match;
599 }
600
601
nai_realm_cred_username(struct wpa_supplicant * wpa_s,struct nai_realm_eap * eap)602 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
603 struct nai_realm_eap *eap)
604 {
605 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
606 wpa_msg(wpa_s, MSG_DEBUG,
607 "nai-realm-cred-username: EAP method not supported: %d",
608 eap->method);
609 return 0; /* method not supported */
610 }
611
612 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
613 eap->method != EAP_TYPE_FAST) {
614 /* Only tunneled methods with username/password supported */
615 wpa_msg(wpa_s, MSG_DEBUG,
616 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
617 eap->method);
618 return 0;
619 }
620
621 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
622 if (eap->inner_method &&
623 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
624 wpa_msg(wpa_s, MSG_DEBUG,
625 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
626 eap->inner_method);
627 return 0;
628 }
629 if (!eap->inner_method &&
630 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
631 wpa_msg(wpa_s, MSG_DEBUG,
632 "nai-realm-cred-username: MSCHAPv2 not supported");
633 return 0;
634 }
635 }
636
637 if (eap->method == EAP_TYPE_TTLS) {
638 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
639 return 1; /* Assume TTLS/MSCHAPv2 is used */
640 if (eap->inner_method &&
641 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
642 wpa_msg(wpa_s, MSG_DEBUG,
643 "nai-realm-cred-username: TTLS, but inner not supported: %d",
644 eap->inner_method);
645 return 0;
646 }
647 if (eap->inner_non_eap &&
648 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
649 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
650 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
651 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
652 wpa_msg(wpa_s, MSG_DEBUG,
653 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
654 eap->inner_non_eap);
655 return 0;
656 }
657 }
658
659 if (eap->inner_method &&
660 eap->inner_method != EAP_TYPE_GTC &&
661 eap->inner_method != EAP_TYPE_MSCHAPV2) {
662 wpa_msg(wpa_s, MSG_DEBUG,
663 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
664 eap->inner_method);
665 return 0;
666 }
667
668 return 1;
669 }
670
671
nai_realm_cred_cert(struct wpa_supplicant * wpa_s,struct nai_realm_eap * eap)672 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
673 struct nai_realm_eap *eap)
674 {
675 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
676 wpa_msg(wpa_s, MSG_DEBUG,
677 "nai-realm-cred-cert: Method not supported: %d",
678 eap->method);
679 return 0; /* method not supported */
680 }
681
682 if (eap->method != EAP_TYPE_TLS) {
683 /* Only EAP-TLS supported for credential authentication */
684 wpa_msg(wpa_s, MSG_DEBUG,
685 "nai-realm-cred-cert: Method not TLS: %d",
686 eap->method);
687 return 0;
688 }
689
690 return 1;
691 }
692
693
nai_realm_find_eap(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct nai_realm * realm)694 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
695 struct wpa_cred *cred,
696 struct nai_realm *realm)
697 {
698 u8 e;
699
700 if (cred->username == NULL ||
701 cred->username[0] == '\0' ||
702 ((cred->password == NULL ||
703 cred->password[0] == '\0') &&
704 (cred->private_key == NULL ||
705 cred->private_key[0] == '\0') &&
706 (!cred->key_id || cred->key_id[0] == '\0'))) {
707 wpa_msg(wpa_s, MSG_DEBUG,
708 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s key_id: %s",
709 cred->username ? cred->username : "NULL",
710 cred->password ? cred->password : "NULL",
711 cred->private_key ? cred->private_key : "NULL",
712 cred->key_id ? cred->key_id : "NULL");
713 return NULL;
714 }
715
716 for (e = 0; e < realm->eap_count; e++) {
717 struct nai_realm_eap *eap = &realm->eap[e];
718 if (cred->password && cred->password[0] &&
719 nai_realm_cred_username(wpa_s, eap))
720 return eap;
721 if (((cred->private_key && cred->private_key[0]) ||
722 (cred->key_id && cred->key_id[0])) &&
723 nai_realm_cred_cert(wpa_s, eap))
724 return eap;
725 }
726
727 return NULL;
728 }
729
730
731 #ifdef INTERWORKING_3GPP
732
plmn_id_match(struct wpabuf * anqp,const char * imsi,int mnc_len)733 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
734 {
735 u8 plmn[3], plmn2[3];
736 const u8 *pos, *end;
737 u8 udhl;
738
739 /*
740 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
741 * operator is allowed to include only two digits of the MNC, so allow
742 * matches based on both two and three digit MNC assumptions. Since some
743 * SIM/USIM cards may not expose MNC length conveniently, we may be
744 * provided the default MNC length 3 here and as such, checking with MNC
745 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
746 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
747 * with otherwise matching values would not be good idea in general, so
748 * this should not result in selecting incorrect networks.
749 */
750 /* Match with 3 digit MNC */
751 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
752 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
753 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
754 /* Match with 2 digit MNC */
755 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
756 plmn2[1] = (imsi[2] - '0') | 0xf0;
757 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
758
759 if (anqp == NULL)
760 return 0;
761 pos = wpabuf_head_u8(anqp);
762 end = pos + wpabuf_len(anqp);
763 if (end - pos < 2)
764 return 0;
765 if (*pos != 0) {
766 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
767 return 0;
768 }
769 pos++;
770 udhl = *pos++;
771 if (udhl > end - pos) {
772 wpa_printf(MSG_DEBUG, "Invalid UDHL");
773 return 0;
774 }
775 end = pos + udhl;
776
777 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
778 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
779 imsi, mnc_len);
780
781 while (end - pos >= 2) {
782 u8 iei, len;
783 const u8 *l_end;
784 iei = *pos++;
785 len = *pos++ & 0x7f;
786 if (len > end - pos)
787 break;
788 l_end = pos + len;
789
790 if (iei == 0 && len > 0) {
791 /* PLMN List */
792 u8 num, i;
793 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
794 pos, len);
795 num = *pos++;
796 for (i = 0; i < num; i++) {
797 if (l_end - pos < 3)
798 break;
799 if (os_memcmp(pos, plmn, 3) == 0 ||
800 os_memcmp(pos, plmn2, 3) == 0)
801 return 1; /* Found matching PLMN */
802 pos += 3;
803 }
804 } else {
805 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
806 pos, len);
807 }
808
809 pos = l_end;
810 }
811
812 return 0;
813 }
814
815
build_root_nai(char * nai,size_t nai_len,const char * imsi,size_t mnc_len,char prefix)816 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
817 size_t mnc_len, char prefix)
818 {
819 const char *sep, *msin;
820 char *end, *pos;
821 size_t msin_len, plmn_len;
822
823 /*
824 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
825 * Root NAI:
826 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
827 * <MNC> is zero-padded to three digits in case two-digit MNC is used
828 */
829
830 if (imsi == NULL || os_strlen(imsi) > 16) {
831 wpa_printf(MSG_DEBUG, "No valid IMSI available");
832 return -1;
833 }
834 sep = os_strchr(imsi, '-');
835 if (sep) {
836 plmn_len = sep - imsi;
837 msin = sep + 1;
838 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
839 plmn_len = 3 + mnc_len;
840 msin = imsi + plmn_len;
841 } else
842 return -1;
843 if (plmn_len != 5 && plmn_len != 6)
844 return -1;
845 msin_len = os_strlen(msin);
846
847 pos = nai;
848 end = nai + nai_len;
849 if (prefix)
850 *pos++ = prefix;
851 os_memcpy(pos, imsi, plmn_len);
852 pos += plmn_len;
853 os_memcpy(pos, msin, msin_len);
854 pos += msin_len;
855 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
856 if (plmn_len == 5) {
857 *pos++ = '0';
858 *pos++ = imsi[3];
859 *pos++ = imsi[4];
860 } else {
861 *pos++ = imsi[3];
862 *pos++ = imsi[4];
863 *pos++ = imsi[5];
864 }
865 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
866 imsi[0], imsi[1], imsi[2]);
867
868 return 0;
869 }
870
871
set_root_nai(struct wpa_ssid * ssid,const char * imsi,char prefix)872 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
873 {
874 char nai[100];
875 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
876 return -1;
877 return wpa_config_set_quoted(ssid, "identity", nai);
878 }
879
880 #endif /* INTERWORKING_3GPP */
881
882
already_connected(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)883 static int already_connected(struct wpa_supplicant *wpa_s,
884 struct wpa_cred *cred, struct wpa_bss *bss)
885 {
886 struct wpa_ssid *ssid, *sel_ssid;
887 struct wpa_bss *selected;
888
889 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
890 return 0;
891
892 ssid = wpa_s->current_ssid;
893 if (ssid->parent_cred != cred)
894 return 0;
895
896 if (ssid->ssid_len != bss->ssid_len ||
897 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
898 return 0;
899
900 sel_ssid = NULL;
901 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
902 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
903 return 0; /* higher priority network in scan results */
904
905 return 1;
906 }
907
908
remove_duplicate_network(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)909 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
910 struct wpa_cred *cred,
911 struct wpa_bss *bss)
912 {
913 struct wpa_ssid *ssid;
914
915 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
916 if (ssid->parent_cred != cred)
917 continue;
918 if (ssid->ssid_len != bss->ssid_len ||
919 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
920 continue;
921
922 break;
923 }
924
925 if (ssid == NULL)
926 return;
927
928 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
929
930 if (ssid == wpa_s->current_ssid) {
931 wpa_sm_set_config(wpa_s->wpa, NULL);
932 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
933 wpa_s->own_disconnect_req = 1;
934 wpa_supplicant_deauthenticate(wpa_s,
935 WLAN_REASON_DEAUTH_LEAVING);
936 }
937
938 wpas_notify_network_removed(wpa_s, ssid);
939 wpa_config_remove_network(wpa_s->conf, ssid->id);
940 }
941
942
interworking_set_hs20_params(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)943 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
944 struct wpa_ssid *ssid)
945 {
946 const char *key_mgmt = NULL;
947 #ifdef CONFIG_IEEE80211R
948 int res;
949 struct wpa_driver_capa capa;
950
951 res = wpa_drv_get_capa(wpa_s, &capa);
952 if (res == 0 && capa.key_mgmt_iftype[WPA_IF_STATION] &
953 WPA_DRIVER_CAPA_KEY_MGMT_FT) {
954 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
955 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
956 "WPA-EAP FT-EAP";
957 }
958 #endif /* CONFIG_IEEE80211R */
959
960 if (!key_mgmt)
961 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
962 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
963 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
964 wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
965 wpa_config_set(ssid, "ieee80211w",
966 wpa_s->conf->pmf == MGMT_FRAME_PROTECTION_REQUIRED ?
967 "2" : "1", 0) < 0 ||
968 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
969 return -1;
970 return 0;
971 }
972
973
interworking_connect_3gpp(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss,int only_add)974 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
975 struct wpa_cred *cred,
976 struct wpa_bss *bss, int only_add)
977 {
978 #ifdef INTERWORKING_3GPP
979 struct wpa_ssid *ssid;
980 int eap_type;
981 int res;
982 char prefix;
983
984 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
985 return -1;
986
987 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
988 " (3GPP)", MAC2STR(bss->bssid));
989
990 if (already_connected(wpa_s, cred, bss)) {
991 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
992 MAC2STR(bss->bssid));
993 return wpa_s->current_ssid->id;
994 }
995
996 remove_duplicate_network(wpa_s, cred, bss);
997
998 ssid = wpa_config_add_network(wpa_s->conf);
999 if (ssid == NULL)
1000 return -1;
1001 ssid->parent_cred = cred;
1002
1003 wpas_notify_network_added(wpa_s, ssid);
1004 wpa_config_set_network_defaults(ssid);
1005 ssid->priority = cred->priority;
1006 ssid->temporary = 1;
1007 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1008 if (ssid->ssid == NULL)
1009 goto fail;
1010 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1011 ssid->ssid_len = bss->ssid_len;
1012 ssid->eap.sim_num = cred->sim_num;
1013
1014 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1015 goto fail;
1016
1017 eap_type = EAP_TYPE_SIM;
1018 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1019 eap_type = EAP_TYPE_AKA;
1020 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1021 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1022 cred->eap_method[0].method == EAP_TYPE_AKA ||
1023 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1024 eap_type = cred->eap_method[0].method;
1025 }
1026
1027 switch (eap_type) {
1028 case EAP_TYPE_SIM:
1029 prefix = '1';
1030 res = wpa_config_set(ssid, "eap", "SIM", 0);
1031 break;
1032 case EAP_TYPE_AKA:
1033 prefix = '0';
1034 res = wpa_config_set(ssid, "eap", "AKA", 0);
1035 break;
1036 case EAP_TYPE_AKA_PRIME:
1037 prefix = '6';
1038 res = wpa_config_set(ssid, "eap", "AKA'", 0);
1039 break;
1040 default:
1041 res = -1;
1042 break;
1043 }
1044 if (res < 0) {
1045 wpa_msg(wpa_s, MSG_DEBUG,
1046 "Selected EAP method (%d) not supported", eap_type);
1047 goto fail;
1048 }
1049
1050 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1051 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1052 goto fail;
1053 }
1054
1055 if (cred->milenage && cred->milenage[0]) {
1056 if (wpa_config_set_quoted(ssid, "password",
1057 cred->milenage) < 0)
1058 goto fail;
1059 } else if (cred->pcsc) {
1060 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1061 goto fail;
1062 if (wpa_s->conf->pcsc_pin &&
1063 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1064 < 0)
1065 goto fail;
1066 }
1067
1068 if (cred->imsi_privacy_key && cred->imsi_privacy_key[0]) {
1069 if (wpa_config_set_quoted(ssid, "imsi_privacy_key",
1070 cred->imsi_privacy_key) < 0)
1071 goto fail;
1072 }
1073
1074 wpa_s->next_ssid = ssid;
1075 wpa_config_update_prio_list(wpa_s->conf);
1076 if (!only_add)
1077 interworking_reconnect(wpa_s);
1078
1079 return ssid->id;
1080
1081 fail:
1082 wpas_notify_network_removed(wpa_s, ssid);
1083 wpa_config_remove_network(wpa_s->conf, ssid->id);
1084 #endif /* INTERWORKING_3GPP */
1085 return -1;
1086 }
1087
1088
roaming_consortium_element_match(const u8 * ie,const u8 * rc_id,size_t rc_len)1089 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1090 size_t rc_len)
1091 {
1092 const u8 *pos, *end;
1093 u8 lens;
1094
1095 if (ie == NULL)
1096 return 0;
1097
1098 pos = ie + 2;
1099 end = ie + 2 + ie[1];
1100
1101 /* Roaming Consortium element:
1102 * Number of ANQP OIs
1103 * OI #1 and #2 lengths
1104 * OI #1, [OI #2], [OI #3]
1105 */
1106
1107 if (end - pos < 2)
1108 return 0;
1109
1110 pos++; /* skip Number of ANQP OIs */
1111 lens = *pos++;
1112 if ((lens & 0x0f) + (lens >> 4) > end - pos)
1113 return 0;
1114
1115 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1116 return 1;
1117 pos += lens & 0x0f;
1118
1119 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1120 return 1;
1121 pos += lens >> 4;
1122
1123 if (pos < end && (size_t) (end - pos) == rc_len &&
1124 os_memcmp(pos, rc_id, rc_len) == 0)
1125 return 1;
1126
1127 return 0;
1128 }
1129
1130
roaming_consortium_anqp_match(const struct wpabuf * anqp,const u8 * rc_id,size_t rc_len)1131 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1132 const u8 *rc_id, size_t rc_len)
1133 {
1134 const u8 *pos, *end;
1135 u8 len;
1136
1137 if (anqp == NULL)
1138 return 0;
1139
1140 pos = wpabuf_head(anqp);
1141 end = pos + wpabuf_len(anqp);
1142
1143 /* Set of <OI Length, OI> duples */
1144 while (pos < end) {
1145 len = *pos++;
1146 if (len > end - pos)
1147 break;
1148 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1149 return 1;
1150 pos += len;
1151 }
1152
1153 return 0;
1154 }
1155
1156
roaming_consortium_match(const u8 * ie,const struct wpabuf * anqp,const u8 * rc_id,size_t rc_len)1157 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1158 const u8 *rc_id, size_t rc_len)
1159 {
1160 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1161 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1162 }
1163
1164
cred_roaming_consortiums_match(const u8 * ie,const struct wpabuf * anqp,const struct wpa_cred * cred)1165 static int cred_roaming_consortiums_match(const u8 *ie,
1166 const struct wpabuf *anqp,
1167 const struct wpa_cred *cred)
1168 {
1169 unsigned int i;
1170
1171 for (i = 0; i < cred->num_roaming_consortiums; i++) {
1172 if (roaming_consortium_match(ie, anqp,
1173 cred->roaming_consortiums[i],
1174 cred->roaming_consortiums_len[i]))
1175 return 1;
1176 }
1177
1178 return 0;
1179 }
1180
1181
cred_no_required_oi_match(struct wpa_cred * cred,struct wpa_bss * bss)1182 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1183 {
1184 const u8 *ie;
1185
1186 if (cred->required_roaming_consortium_len == 0)
1187 return 0;
1188
1189 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1190
1191 if (ie == NULL &&
1192 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1193 return 1;
1194
1195 return !roaming_consortium_match(ie,
1196 bss->anqp ?
1197 bss->anqp->roaming_consortium : NULL,
1198 cred->required_roaming_consortium,
1199 cred->required_roaming_consortium_len);
1200 }
1201
1202
cred_excluded_ssid(struct wpa_cred * cred,struct wpa_bss * bss)1203 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1204 {
1205 size_t i;
1206
1207 if (!cred->excluded_ssid)
1208 return 0;
1209
1210 for (i = 0; i < cred->num_excluded_ssid; i++) {
1211 struct excluded_ssid *e = &cred->excluded_ssid[i];
1212 if (bss->ssid_len == e->ssid_len &&
1213 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1214 return 1;
1215 }
1216
1217 return 0;
1218 }
1219
1220
cred_below_min_backhaul(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)1221 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1222 struct wpa_cred *cred, struct wpa_bss *bss)
1223 {
1224 #ifdef CONFIG_HS20
1225 int res;
1226 unsigned int dl_bandwidth, ul_bandwidth;
1227 const u8 *wan;
1228 u8 wan_info, dl_load, ul_load;
1229 u16 lmd;
1230 u32 ul_speed, dl_speed;
1231
1232 if (!cred->min_dl_bandwidth_home &&
1233 !cred->min_ul_bandwidth_home &&
1234 !cred->min_dl_bandwidth_roaming &&
1235 !cred->min_ul_bandwidth_roaming)
1236 return 0; /* No bandwidth constraint specified */
1237
1238 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1239 return 0; /* No WAN Metrics known - ignore constraint */
1240
1241 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1242 wan_info = wan[0];
1243 if (wan_info & BIT(3))
1244 return 1; /* WAN link at capacity */
1245 lmd = WPA_GET_LE16(wan + 11);
1246 if (lmd == 0)
1247 return 0; /* Downlink/Uplink Load was not measured */
1248 dl_speed = WPA_GET_LE32(wan + 1);
1249 ul_speed = WPA_GET_LE32(wan + 5);
1250 dl_load = wan[9];
1251 ul_load = wan[10];
1252
1253 if (dl_speed >= 0xffffff)
1254 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1255 else
1256 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1257
1258 if (ul_speed >= 0xffffff)
1259 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1260 else
1261 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1262
1263 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1264 bss->anqp->domain_name : NULL);
1265 if (res > 0) {
1266 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1267 return 1;
1268 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1269 return 1;
1270 } else {
1271 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1272 return 1;
1273 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1274 return 1;
1275 }
1276 #endif /* CONFIG_HS20 */
1277
1278 return 0;
1279 }
1280
1281
cred_over_max_bss_load(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)1282 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1283 struct wpa_cred *cred, struct wpa_bss *bss)
1284 {
1285 const u8 *ie;
1286 int res;
1287
1288 if (!cred->max_bss_load)
1289 return 0; /* No BSS Load constraint specified */
1290
1291 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1292 if (ie == NULL || ie[1] < 3)
1293 return 0; /* No BSS Load advertised */
1294
1295 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1296 bss->anqp->domain_name : NULL);
1297 if (res <= 0)
1298 return 0; /* Not a home network */
1299
1300 return ie[4] > cred->max_bss_load;
1301 }
1302
1303
1304 #ifdef CONFIG_HS20
1305
has_proto_match(const u8 * pos,const u8 * end,u8 proto)1306 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1307 {
1308 while (end - pos >= 4) {
1309 if (pos[0] == proto && pos[3] == 1 /* Open */)
1310 return 1;
1311 pos += 4;
1312 }
1313
1314 return 0;
1315 }
1316
1317
has_proto_port_match(const u8 * pos,const u8 * end,u8 proto,u16 port)1318 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1319 u16 port)
1320 {
1321 while (end - pos >= 4) {
1322 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1323 pos[3] == 1 /* Open */)
1324 return 1;
1325 pos += 4;
1326 }
1327
1328 return 0;
1329 }
1330
1331 #endif /* CONFIG_HS20 */
1332
1333
cred_conn_capab_missing(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)1334 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1335 struct wpa_cred *cred, struct wpa_bss *bss)
1336 {
1337 #ifdef CONFIG_HS20
1338 int res;
1339 const u8 *capab, *end;
1340 unsigned int i, j;
1341 int *ports;
1342
1343 if (!cred->num_req_conn_capab)
1344 return 0; /* No connection capability constraint specified */
1345
1346 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1347 return 0; /* No Connection Capability known - ignore constraint
1348 */
1349
1350 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1351 bss->anqp->domain_name : NULL);
1352 if (res > 0)
1353 return 0; /* No constraint in home network */
1354
1355 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1356 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1357
1358 for (i = 0; i < cred->num_req_conn_capab; i++) {
1359 ports = cred->req_conn_capab_port[i];
1360 if (!ports) {
1361 if (!has_proto_match(capab, end,
1362 cred->req_conn_capab_proto[i]))
1363 return 1;
1364 } else {
1365 for (j = 0; ports[j] > -1; j++) {
1366 if (!has_proto_port_match(
1367 capab, end,
1368 cred->req_conn_capab_proto[i],
1369 ports[j]))
1370 return 1;
1371 }
1372 }
1373 }
1374 #endif /* CONFIG_HS20 */
1375
1376 return 0;
1377 }
1378
1379
interworking_credentials_available_roaming_consortium(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int ignore_bw,int * excluded)1380 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1381 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1382 int *excluded)
1383 {
1384 struct wpa_cred *cred, *selected = NULL;
1385 const u8 *ie;
1386 const struct wpabuf *anqp;
1387 int is_excluded = 0;
1388
1389 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1390 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1391
1392 if (!ie && !anqp)
1393 return NULL;
1394
1395 if (wpa_s->conf->cred == NULL)
1396 return NULL;
1397
1398 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1399 if (cred->roaming_consortium_len == 0 &&
1400 cred->num_roaming_consortiums == 0)
1401 continue;
1402
1403 if (!cred->eap_method)
1404 continue;
1405
1406 if ((cred->roaming_consortium_len == 0 ||
1407 !roaming_consortium_match(ie, anqp,
1408 cred->roaming_consortium,
1409 cred->roaming_consortium_len)) &&
1410 !cred_roaming_consortiums_match(ie, anqp, cred) &&
1411 (cred->required_roaming_consortium_len == 0 ||
1412 !roaming_consortium_match(
1413 ie, anqp, cred->required_roaming_consortium,
1414 cred->required_roaming_consortium_len)))
1415 continue;
1416
1417 if (cred_no_required_oi_match(cred, bss))
1418 continue;
1419 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1420 continue;
1421 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1422 continue;
1423 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1424 continue;
1425 if (cred_excluded_ssid(cred, bss)) {
1426 if (excluded == NULL)
1427 continue;
1428 if (selected == NULL) {
1429 selected = cred;
1430 is_excluded = 1;
1431 }
1432 } else {
1433 if (selected == NULL || is_excluded ||
1434 cred_prio_cmp(selected, cred) < 0) {
1435 selected = cred;
1436 is_excluded = 0;
1437 }
1438 }
1439 }
1440
1441 if (excluded)
1442 *excluded = is_excluded;
1443
1444 return selected;
1445 }
1446
1447
interworking_set_eap_params(struct wpa_ssid * ssid,struct wpa_cred * cred,int ttls)1448 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1449 struct wpa_cred *cred, int ttls)
1450 {
1451 if (cred->eap_method) {
1452 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1453 cred->eap_method->method == EAP_TYPE_TTLS;
1454
1455 os_free(ssid->eap.eap_methods);
1456 ssid->eap.eap_methods =
1457 os_malloc(sizeof(struct eap_method_type) * 2);
1458 if (ssid->eap.eap_methods == NULL)
1459 return -1;
1460 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1461 sizeof(*cred->eap_method));
1462 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1463 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1464 }
1465
1466 if (ttls && cred->username && cred->username[0]) {
1467 const char *pos;
1468 char *anon;
1469 /* Use anonymous NAI in Phase 1 */
1470 pos = os_strchr(cred->username, '@');
1471 if (pos) {
1472 size_t buflen = 9 + os_strlen(pos) + 1;
1473 anon = os_malloc(buflen);
1474 if (anon == NULL)
1475 return -1;
1476 os_snprintf(anon, buflen, "anonymous%s", pos);
1477 } else if (cred->realm) {
1478 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1479 anon = os_malloc(buflen);
1480 if (anon == NULL)
1481 return -1;
1482 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1483 } else {
1484 anon = os_strdup("anonymous");
1485 if (anon == NULL)
1486 return -1;
1487 }
1488 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1489 0) {
1490 os_free(anon);
1491 return -1;
1492 }
1493 os_free(anon);
1494 }
1495
1496 if (!ttls && cred->username && cred->username[0] && cred->realm &&
1497 !os_strchr(cred->username, '@')) {
1498 char *id;
1499 size_t buflen;
1500 int res;
1501
1502 buflen = os_strlen(cred->username) + 1 +
1503 os_strlen(cred->realm) + 1;
1504
1505 id = os_malloc(buflen);
1506 if (!id)
1507 return -1;
1508 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
1509 res = wpa_config_set_quoted(ssid, "identity", id);
1510 os_free(id);
1511 if (res < 0)
1512 return -1;
1513 } else if (cred->username && cred->username[0] &&
1514 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1515 return -1;
1516
1517 if (cred->password && cred->password[0]) {
1518 if (cred->ext_password &&
1519 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1520 return -1;
1521 if (!cred->ext_password &&
1522 wpa_config_set_quoted(ssid, "password", cred->password) <
1523 0)
1524 return -1;
1525 }
1526
1527 if (cred->client_cert && cred->client_cert[0] &&
1528 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1529 return -1;
1530
1531 #ifdef ANDROID
1532 if (cred->private_key &&
1533 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1534 /* Use OpenSSL engine configuration for Android keystore */
1535 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1536 wpa_config_set_quoted(ssid, "key_id",
1537 cred->private_key + 11) < 0 ||
1538 wpa_config_set(ssid, "engine", "1", 0) < 0)
1539 return -1;
1540 } else
1541 #endif /* ANDROID */
1542 if (cred->private_key && cred->private_key[0] &&
1543 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1544 return -1;
1545
1546 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1547 wpa_config_set_quoted(ssid, "private_key_passwd",
1548 cred->private_key_passwd) < 0)
1549 return -1;
1550
1551 if (cred->ca_cert_id && cred->ca_cert_id[0] &&
1552 wpa_config_set_quoted(ssid, "ca_cert_id", cred->ca_cert_id) < 0)
1553 return -1;
1554
1555 if (cred->cert_id && cred->cert_id[0] &&
1556 wpa_config_set_quoted(ssid, "cert_id", cred->cert_id) < 0)
1557 return -1;
1558
1559 if (cred->key_id && cred->key_id[0] &&
1560 wpa_config_set_quoted(ssid, "key_id", cred->key_id) < 0)
1561 return -1;
1562
1563 if (cred->engine_id && cred->engine_id[0] &&
1564 wpa_config_set_quoted(ssid, "engine_id", cred->engine_id) < 0)
1565 return -1;
1566
1567 ssid->eap.cert.engine = cred->engine;
1568
1569 if (cred->phase1) {
1570 os_free(ssid->eap.phase1);
1571 ssid->eap.phase1 = os_strdup(cred->phase1);
1572 }
1573 if (cred->phase2) {
1574 os_free(ssid->eap.phase2);
1575 ssid->eap.phase2 = os_strdup(cred->phase2);
1576 }
1577
1578 if (cred->ca_cert && cred->ca_cert[0] &&
1579 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1580 return -1;
1581
1582 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1583 wpa_config_set_quoted(ssid, "domain_suffix_match",
1584 cred->domain_suffix_match) < 0)
1585 return -1;
1586
1587 ssid->eap.cert.ocsp = cred->ocsp;
1588
1589 return 0;
1590 }
1591
1592
interworking_connect_roaming_consortium(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss,int only_add)1593 static int interworking_connect_roaming_consortium(
1594 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1595 struct wpa_bss *bss, int only_add)
1596 {
1597 struct wpa_ssid *ssid;
1598 const u8 *ie;
1599 const struct wpabuf *anqp;
1600 unsigned int i;
1601
1602 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1603 " based on roaming consortium match", MAC2STR(bss->bssid));
1604
1605 if (already_connected(wpa_s, cred, bss)) {
1606 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1607 MAC2STR(bss->bssid));
1608 return wpa_s->current_ssid->id;
1609 }
1610
1611 remove_duplicate_network(wpa_s, cred, bss);
1612
1613 ssid = wpa_config_add_network(wpa_s->conf);
1614 if (ssid == NULL)
1615 return -1;
1616 ssid->parent_cred = cred;
1617 wpas_notify_network_added(wpa_s, ssid);
1618 wpa_config_set_network_defaults(ssid);
1619 ssid->priority = cred->priority;
1620 ssid->temporary = 1;
1621 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1622 if (ssid->ssid == NULL)
1623 goto fail;
1624 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1625 ssid->ssid_len = bss->ssid_len;
1626
1627 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1628 goto fail;
1629
1630 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1631 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1632 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) {
1633 if (!roaming_consortium_match(
1634 ie, anqp, cred->roaming_consortiums[i],
1635 cred->roaming_consortiums_len[i]))
1636 continue;
1637
1638 ssid->roaming_consortium_selection =
1639 os_malloc(cred->roaming_consortiums_len[i]);
1640 if (!ssid->roaming_consortium_selection)
1641 goto fail;
1642 os_memcpy(ssid->roaming_consortium_selection,
1643 cred->roaming_consortiums[i],
1644 cred->roaming_consortiums_len[i]);
1645 ssid->roaming_consortium_selection_len =
1646 cred->roaming_consortiums_len[i];
1647 break;
1648 }
1649
1650 if (cred->eap_method == NULL) {
1651 wpa_msg(wpa_s, MSG_DEBUG,
1652 "Interworking: No EAP method set for credential using roaming consortium");
1653 goto fail;
1654 }
1655
1656 if (interworking_set_eap_params(
1657 ssid, cred,
1658 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1659 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1660 goto fail;
1661
1662 wpa_s->next_ssid = ssid;
1663 wpa_config_update_prio_list(wpa_s->conf);
1664 if (!only_add)
1665 interworking_reconnect(wpa_s);
1666
1667 return ssid->id;
1668
1669 fail:
1670 wpas_notify_network_removed(wpa_s, ssid);
1671 wpa_config_remove_network(wpa_s->conf, ssid->id);
1672 return -1;
1673 }
1674
1675
interworking_connect(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int only_add)1676 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1677 int only_add)
1678 {
1679 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1680 struct wpa_ssid *ssid;
1681 struct nai_realm *realm;
1682 struct nai_realm_eap *eap = NULL;
1683 u16 count, i;
1684 char buf[100];
1685 int excluded = 0, *excl = &excluded;
1686 const char *name;
1687
1688 if (wpa_s->conf->cred == NULL || bss == NULL)
1689 return -1;
1690 if (disallowed_bssid(wpa_s, bss->bssid) ||
1691 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1692 wpa_msg(wpa_s, MSG_DEBUG,
1693 "Interworking: Reject connection to disallowed BSS "
1694 MACSTR, MAC2STR(bss->bssid));
1695 return -1;
1696 }
1697
1698 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1699 " for connection",
1700 MAC2STR(bss->bssid));
1701
1702 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1703 /*
1704 * We currently support only HS 2.0 networks and those are
1705 * required to use WPA2-Enterprise.
1706 */
1707 wpa_msg(wpa_s, MSG_DEBUG,
1708 "Interworking: Network does not use RSN");
1709 return -1;
1710 }
1711
1712 cred_rc = interworking_credentials_available_roaming_consortium(
1713 wpa_s, bss, 0, excl);
1714 if (cred_rc) {
1715 wpa_msg(wpa_s, MSG_DEBUG,
1716 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1717 cred_rc->priority, cred_rc->sp_priority);
1718 if (excl && !(*excl))
1719 excl = NULL;
1720 }
1721
1722 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1723 if (cred) {
1724 wpa_msg(wpa_s, MSG_DEBUG,
1725 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1726 cred->priority, cred->sp_priority);
1727 if (excl && !(*excl))
1728 excl = NULL;
1729 }
1730
1731 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1732 excl);
1733 if (cred_3gpp) {
1734 wpa_msg(wpa_s, MSG_DEBUG,
1735 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1736 cred_3gpp->priority, cred_3gpp->sp_priority);
1737 if (excl && !(*excl))
1738 excl = NULL;
1739 }
1740
1741 if (!cred_rc && !cred && !cred_3gpp) {
1742 wpa_msg(wpa_s, MSG_DEBUG,
1743 "Interworking: No full credential matches - consider options without BW(etc.) limits");
1744 cred_rc = interworking_credentials_available_roaming_consortium(
1745 wpa_s, bss, 1, excl);
1746 if (cred_rc) {
1747 wpa_msg(wpa_s, MSG_DEBUG,
1748 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1749 cred_rc->priority, cred_rc->sp_priority);
1750 if (excl && !(*excl))
1751 excl = NULL;
1752 }
1753
1754 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1755 excl);
1756 if (cred) {
1757 wpa_msg(wpa_s, MSG_DEBUG,
1758 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1759 cred->priority, cred->sp_priority);
1760 if (excl && !(*excl))
1761 excl = NULL;
1762 }
1763
1764 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1765 1, excl);
1766 if (cred_3gpp) {
1767 wpa_msg(wpa_s, MSG_DEBUG,
1768 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1769 cred_3gpp->priority, cred_3gpp->sp_priority);
1770 if (excl && !(*excl))
1771 excl = NULL;
1772 }
1773 }
1774
1775 if (cred_rc &&
1776 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1777 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1778 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1779 bss, only_add);
1780
1781 if (cred_3gpp &&
1782 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1783 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1784 only_add);
1785 }
1786
1787 if (cred == NULL) {
1788 wpa_msg(wpa_s, MSG_DEBUG,
1789 "Interworking: No matching credentials found for "
1790 MACSTR, MAC2STR(bss->bssid));
1791 return -1;
1792 }
1793
1794 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1795 &count);
1796 if (realm == NULL) {
1797 wpa_msg(wpa_s, MSG_DEBUG,
1798 "Interworking: Could not parse NAI Realm list from "
1799 MACSTR, MAC2STR(bss->bssid));
1800 return -1;
1801 }
1802
1803 for (i = 0; i < count; i++) {
1804 if (!nai_realm_match(&realm[i], cred->realm))
1805 continue;
1806 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1807 if (eap)
1808 break;
1809 }
1810
1811 if (!eap) {
1812 wpa_msg(wpa_s, MSG_DEBUG,
1813 "Interworking: No matching credentials and EAP method found for "
1814 MACSTR, MAC2STR(bss->bssid));
1815 nai_realm_free(realm, count);
1816 return -1;
1817 }
1818
1819 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1820 MAC2STR(bss->bssid));
1821
1822 if (already_connected(wpa_s, cred, bss)) {
1823 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1824 MAC2STR(bss->bssid));
1825 nai_realm_free(realm, count);
1826 return 0;
1827 }
1828
1829 remove_duplicate_network(wpa_s, cred, bss);
1830
1831 ssid = wpa_config_add_network(wpa_s->conf);
1832 if (ssid == NULL) {
1833 nai_realm_free(realm, count);
1834 return -1;
1835 }
1836 ssid->parent_cred = cred;
1837 wpas_notify_network_added(wpa_s, ssid);
1838 wpa_config_set_network_defaults(ssid);
1839 ssid->priority = cred->priority;
1840 ssid->temporary = 1;
1841 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1842 if (ssid->ssid == NULL)
1843 goto fail;
1844 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1845 ssid->ssid_len = bss->ssid_len;
1846
1847 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1848 goto fail;
1849
1850 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1851 eap->method), 0) < 0)
1852 goto fail;
1853
1854 switch (eap->method) {
1855 case EAP_TYPE_TTLS:
1856 if (eap->inner_method) {
1857 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method);
1858 if (!name)
1859 goto fail;
1860 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name);
1861 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1862 goto fail;
1863 break;
1864 }
1865 switch (eap->inner_non_eap) {
1866 case NAI_REALM_INNER_NON_EAP_PAP:
1867 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1868 0)
1869 goto fail;
1870 break;
1871 case NAI_REALM_INNER_NON_EAP_CHAP:
1872 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1873 < 0)
1874 goto fail;
1875 break;
1876 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1877 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1878 0) < 0)
1879 goto fail;
1880 break;
1881 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1882 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1883 0) < 0)
1884 goto fail;
1885 break;
1886 default:
1887 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1888 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1889 0) < 0)
1890 goto fail;
1891 break;
1892 }
1893 break;
1894 case EAP_TYPE_PEAP:
1895 case EAP_TYPE_FAST:
1896 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1897 0) < 0)
1898 goto fail;
1899 if (wpa_config_set(ssid, "pac_file",
1900 "\"blob://pac_interworking\"", 0) < 0)
1901 goto fail;
1902 name = eap_get_name(EAP_VENDOR_IETF,
1903 eap->inner_method ? eap->inner_method :
1904 EAP_TYPE_MSCHAPV2);
1905 if (name == NULL)
1906 goto fail;
1907 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1908 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1909 goto fail;
1910 break;
1911 case EAP_TYPE_TLS:
1912 break;
1913 }
1914
1915 if (interworking_set_eap_params(ssid, cred,
1916 eap->method == EAP_TYPE_TTLS) < 0)
1917 goto fail;
1918
1919 nai_realm_free(realm, count);
1920
1921 wpa_s->next_ssid = ssid;
1922 wpa_config_update_prio_list(wpa_s->conf);
1923 if (!only_add)
1924 interworking_reconnect(wpa_s);
1925
1926 return ssid->id;
1927
1928 fail:
1929 wpas_notify_network_removed(wpa_s, ssid);
1930 wpa_config_remove_network(wpa_s->conf, ssid->id);
1931 nai_realm_free(realm, count);
1932 return -1;
1933 }
1934
1935
1936 #ifdef PCSC_FUNCS
interworking_pcsc_read_imsi(struct wpa_supplicant * wpa_s)1937 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1938 {
1939 size_t len;
1940
1941 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1942 return 0;
1943
1944 len = sizeof(wpa_s->imsi) - 1;
1945 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1946 scard_deinit(wpa_s->scard);
1947 wpa_s->scard = NULL;
1948 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1949 return -1;
1950 }
1951 wpa_s->imsi[len] = '\0';
1952 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1953 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1954 wpa_s->imsi, wpa_s->mnc_len);
1955
1956 return 0;
1957 }
1958 #endif /* PCSC_FUNCS */
1959
1960
interworking_credentials_available_3gpp(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int ignore_bw,int * excluded)1961 static struct wpa_cred * interworking_credentials_available_3gpp(
1962 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1963 int *excluded)
1964 {
1965 struct wpa_cred *selected = NULL;
1966 #ifdef INTERWORKING_3GPP
1967 struct wpa_cred *cred;
1968 int ret;
1969 int is_excluded = 0;
1970
1971 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1972 wpa_msg(wpa_s, MSG_DEBUG,
1973 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1974 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1975 return NULL;
1976 }
1977
1978 #ifdef CONFIG_EAP_PROXY
1979 if (!wpa_s->imsi[0]) {
1980 size_t len;
1981 wpa_msg(wpa_s, MSG_DEBUG,
1982 "Interworking: IMSI not available - try to read again through eap_proxy");
1983 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1,
1984 wpa_s->imsi,
1985 &len);
1986 if (wpa_s->mnc_len > 0) {
1987 wpa_s->imsi[len] = '\0';
1988 wpa_msg(wpa_s, MSG_DEBUG,
1989 "eap_proxy: IMSI %s (MNC length %d)",
1990 wpa_s->imsi, wpa_s->mnc_len);
1991 } else {
1992 wpa_msg(wpa_s, MSG_DEBUG,
1993 "eap_proxy: IMSI not available");
1994 }
1995 }
1996 #endif /* CONFIG_EAP_PROXY */
1997
1998 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1999 char *sep;
2000 const char *imsi;
2001 int mnc_len;
2002 char imsi_buf[16];
2003 size_t msin_len;
2004
2005 #ifdef PCSC_FUNCS
2006 if (cred->pcsc && wpa_s->scard) {
2007 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2008 continue;
2009 imsi = wpa_s->imsi;
2010 mnc_len = wpa_s->mnc_len;
2011 goto compare;
2012 }
2013 #endif /* PCSC_FUNCS */
2014 #ifdef CONFIG_EAP_PROXY
2015 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2016 imsi = wpa_s->imsi;
2017 mnc_len = wpa_s->mnc_len;
2018 goto compare;
2019 }
2020 #endif /* CONFIG_EAP_PROXY */
2021
2022 if (cred->imsi == NULL || !cred->imsi[0] ||
2023 (!wpa_s->conf->external_sim &&
2024 (cred->milenage == NULL || !cred->milenage[0])))
2025 continue;
2026
2027 sep = os_strchr(cred->imsi, '-');
2028 if (sep == NULL ||
2029 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
2030 continue;
2031 mnc_len = sep - cred->imsi - 3;
2032 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
2033 sep++;
2034 msin_len = os_strlen(cred->imsi);
2035 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
2036 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
2037 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
2038 imsi_buf[3 + mnc_len + msin_len] = '\0';
2039 imsi = imsi_buf;
2040
2041 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
2042 compare:
2043 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
2044 wpa_msg(wpa_s, MSG_DEBUG,
2045 "Interworking: Parsing 3GPP info from " MACSTR,
2046 MAC2STR(bss->bssid));
2047 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
2048 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
2049 ret ? "" : "not ");
2050 if (ret) {
2051 if (cred_no_required_oi_match(cred, bss))
2052 continue;
2053 if (!ignore_bw &&
2054 cred_below_min_backhaul(wpa_s, cred, bss))
2055 continue;
2056 if (!ignore_bw &&
2057 cred_over_max_bss_load(wpa_s, cred, bss))
2058 continue;
2059 if (!ignore_bw &&
2060 cred_conn_capab_missing(wpa_s, cred, bss))
2061 continue;
2062 if (cred_excluded_ssid(cred, bss)) {
2063 if (excluded == NULL)
2064 continue;
2065 if (selected == NULL) {
2066 selected = cred;
2067 is_excluded = 1;
2068 }
2069 } else {
2070 if (selected == NULL || is_excluded ||
2071 cred_prio_cmp(selected, cred) < 0) {
2072 selected = cred;
2073 is_excluded = 0;
2074 }
2075 }
2076 }
2077 }
2078
2079 if (excluded)
2080 *excluded = is_excluded;
2081 #endif /* INTERWORKING_3GPP */
2082 return selected;
2083 }
2084
2085
interworking_credentials_available_realm(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int ignore_bw,int * excluded)2086 static struct wpa_cred * interworking_credentials_available_realm(
2087 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2088 int *excluded)
2089 {
2090 struct wpa_cred *cred, *selected = NULL;
2091 struct nai_realm *realm;
2092 u16 count, i;
2093 int is_excluded = 0;
2094
2095 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
2096 return NULL;
2097
2098 if (wpa_s->conf->cred == NULL)
2099 return NULL;
2100
2101 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
2102 MACSTR, MAC2STR(bss->bssid));
2103 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
2104 if (realm == NULL) {
2105 wpa_msg(wpa_s, MSG_DEBUG,
2106 "Interworking: Could not parse NAI Realm list from "
2107 MACSTR, MAC2STR(bss->bssid));
2108 return NULL;
2109 }
2110
2111 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2112 if (cred->realm == NULL)
2113 continue;
2114
2115 for (i = 0; i < count; i++) {
2116 if (!nai_realm_match(&realm[i], cred->realm))
2117 continue;
2118 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2119 if (cred_no_required_oi_match(cred, bss))
2120 continue;
2121 if (!ignore_bw &&
2122 cred_below_min_backhaul(wpa_s, cred, bss))
2123 continue;
2124 if (!ignore_bw &&
2125 cred_over_max_bss_load(wpa_s, cred, bss))
2126 continue;
2127 if (!ignore_bw &&
2128 cred_conn_capab_missing(wpa_s, cred, bss))
2129 continue;
2130 if (cred_excluded_ssid(cred, bss)) {
2131 if (excluded == NULL)
2132 continue;
2133 if (selected == NULL) {
2134 selected = cred;
2135 is_excluded = 1;
2136 }
2137 } else {
2138 if (selected == NULL || is_excluded ||
2139 cred_prio_cmp(selected, cred) < 0)
2140 {
2141 selected = cred;
2142 is_excluded = 0;
2143 }
2144 }
2145 break;
2146 } else {
2147 wpa_msg(wpa_s, MSG_DEBUG,
2148 "Interworking: realm-find-eap returned false");
2149 }
2150 }
2151 }
2152
2153 nai_realm_free(realm, count);
2154
2155 if (excluded)
2156 *excluded = is_excluded;
2157
2158 return selected;
2159 }
2160
2161
interworking_credentials_available_helper(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int ignore_bw,int * excluded)2162 static struct wpa_cred * interworking_credentials_available_helper(
2163 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2164 int *excluded)
2165 {
2166 struct wpa_cred *cred, *cred2;
2167 int excluded1, excluded2 = 0;
2168
2169 if (disallowed_bssid(wpa_s, bss->bssid) ||
2170 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2171 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2172 MACSTR, MAC2STR(bss->bssid));
2173 return NULL;
2174 }
2175
2176 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2177 &excluded1);
2178 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2179 &excluded2);
2180 if (cred && cred2 &&
2181 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2182 cred = cred2;
2183 excluded1 = excluded2;
2184 }
2185 if (!cred) {
2186 cred = cred2;
2187 excluded1 = excluded2;
2188 }
2189
2190 cred2 = interworking_credentials_available_roaming_consortium(
2191 wpa_s, bss, ignore_bw, &excluded2);
2192 if (cred && cred2 &&
2193 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2194 cred = cred2;
2195 excluded1 = excluded2;
2196 }
2197 if (!cred) {
2198 cred = cred2;
2199 excluded1 = excluded2;
2200 }
2201
2202 if (excluded)
2203 *excluded = excluded1;
2204 return cred;
2205 }
2206
2207
interworking_credentials_available(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,int * excluded)2208 static struct wpa_cred * interworking_credentials_available(
2209 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2210 {
2211 struct wpa_cred *cred;
2212
2213 if (excluded)
2214 *excluded = 0;
2215 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2216 excluded);
2217 if (cred)
2218 return cred;
2219 return interworking_credentials_available_helper(wpa_s, bss, 1,
2220 excluded);
2221 }
2222
2223
domain_name_list_contains(struct wpabuf * domain_names,const char * domain,int exact_match)2224 int domain_name_list_contains(struct wpabuf *domain_names,
2225 const char *domain, int exact_match)
2226 {
2227 const u8 *pos, *end;
2228 size_t len;
2229
2230 len = os_strlen(domain);
2231 pos = wpabuf_head(domain_names);
2232 end = pos + wpabuf_len(domain_names);
2233
2234 while (end - pos > 1) {
2235 u8 elen;
2236
2237 elen = *pos++;
2238 if (elen > end - pos)
2239 break;
2240
2241 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2242 pos, elen);
2243 if (elen == len &&
2244 os_strncasecmp(domain, (const char *) pos, len) == 0)
2245 return 1;
2246 if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
2247 const char *ap = (const char *) pos;
2248 int offset = elen - len;
2249
2250 if (os_strncasecmp(domain, ap + offset, len) == 0)
2251 return 1;
2252 }
2253
2254 pos += elen;
2255 }
2256
2257 return 0;
2258 }
2259
2260
interworking_home_sp_cred(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpabuf * domain_names)2261 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2262 struct wpa_cred *cred,
2263 struct wpabuf *domain_names)
2264 {
2265 size_t i;
2266 int ret = -1;
2267 #ifdef INTERWORKING_3GPP
2268 char nai[100], *realm;
2269
2270 char *imsi = NULL;
2271 int mnc_len = 0;
2272 if (cred->imsi)
2273 imsi = cred->imsi;
2274 #ifdef PCSC_FUNCS
2275 else if (cred->pcsc && wpa_s->scard) {
2276 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2277 return -1;
2278 imsi = wpa_s->imsi;
2279 mnc_len = wpa_s->mnc_len;
2280 }
2281 #endif /* PCSC_FUNCS */
2282 #ifdef CONFIG_EAP_PROXY
2283 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2284 imsi = wpa_s->imsi;
2285 mnc_len = wpa_s->mnc_len;
2286 }
2287 #endif /* CONFIG_EAP_PROXY */
2288 if (domain_names &&
2289 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2290 realm = os_strchr(nai, '@');
2291 if (realm)
2292 realm++;
2293 wpa_msg(wpa_s, MSG_DEBUG,
2294 "Interworking: Search for match with SIM/USIM domain %s",
2295 realm ? realm : "[NULL]");
2296 if (realm &&
2297 domain_name_list_contains(domain_names, realm, 1))
2298 return 1;
2299 if (realm)
2300 ret = 0;
2301 }
2302 #endif /* INTERWORKING_3GPP */
2303
2304 if (domain_names == NULL || cred->domain == NULL)
2305 return ret;
2306
2307 for (i = 0; i < cred->num_domain; i++) {
2308 wpa_msg(wpa_s, MSG_DEBUG,
2309 "Interworking: Search for match with home SP FQDN %s",
2310 cred->domain[i]);
2311 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2312 return 1;
2313 }
2314
2315 return 0;
2316 }
2317
2318
interworking_home_sp(struct wpa_supplicant * wpa_s,struct wpabuf * domain_names)2319 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2320 struct wpabuf *domain_names)
2321 {
2322 struct wpa_cred *cred;
2323
2324 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2325 return -1;
2326
2327 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2328 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2329 if (res)
2330 return res;
2331 }
2332
2333 return 0;
2334 }
2335
2336
interworking_find_network_match(struct wpa_supplicant * wpa_s)2337 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2338 {
2339 struct wpa_bss *bss;
2340 struct wpa_ssid *ssid;
2341
2342 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2343 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2344 if (wpas_network_disabled(wpa_s, ssid) ||
2345 ssid->mode != WPAS_MODE_INFRA)
2346 continue;
2347 if (ssid->ssid_len != bss->ssid_len ||
2348 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2349 0)
2350 continue;
2351 /*
2352 * TODO: Consider more accurate matching of security
2353 * configuration similarly to what is done in events.c
2354 */
2355 return 1;
2356 }
2357 }
2358
2359 return 0;
2360 }
2361
2362
roaming_partner_match(struct wpa_supplicant * wpa_s,struct roaming_partner * partner,struct wpabuf * domain_names)2363 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2364 struct roaming_partner *partner,
2365 struct wpabuf *domain_names)
2366 {
2367 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2368 partner->fqdn, partner->exact_match, partner->priority,
2369 partner->country);
2370 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2371 wpabuf_head(domain_names),
2372 wpabuf_len(domain_names));
2373 if (!domain_name_list_contains(domain_names, partner->fqdn,
2374 partner->exact_match))
2375 return 0;
2376 /* TODO: match Country */
2377 return 1;
2378 }
2379
2380
roaming_prio(struct wpa_supplicant * wpa_s,struct wpa_cred * cred,struct wpa_bss * bss)2381 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2382 struct wpa_bss *bss)
2383 {
2384 size_t i;
2385
2386 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2387 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2388 return 128; /* cannot check preference with domain name */
2389 }
2390
2391 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2392 {
2393 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2394 return 0; /* max preference for home SP network */
2395 }
2396
2397 for (i = 0; i < cred->num_roaming_partner; i++) {
2398 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2399 bss->anqp->domain_name)) {
2400 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2401 cred->roaming_partner[i].priority);
2402 return cred->roaming_partner[i].priority;
2403 }
2404 }
2405
2406 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2407 return 128;
2408 }
2409
2410
pick_best_roaming_partner(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_cred * cred)2411 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2412 struct wpa_bss *selected,
2413 struct wpa_cred *cred)
2414 {
2415 struct wpa_bss *bss;
2416 u8 best_prio, prio;
2417 struct wpa_cred *cred2;
2418
2419 /*
2420 * Check if any other BSS is operated by a more preferred roaming
2421 * partner.
2422 */
2423
2424 best_prio = roaming_prio(wpa_s, cred, selected);
2425 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2426 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2427 cred->id);
2428
2429 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2430 if (bss == selected)
2431 continue;
2432 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2433 if (!cred2)
2434 continue;
2435 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2436 continue;
2437 prio = roaming_prio(wpa_s, cred2, bss);
2438 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2439 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2440 cred2->id);
2441 if (prio < best_prio) {
2442 int bh1, bh2, load1, load2, conn1, conn2;
2443 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2444 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2445 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2446 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2447 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2448 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2449 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2450 bh1, load1, conn1, bh2, load2, conn2);
2451 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2452 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2453 best_prio = prio;
2454 selected = bss;
2455 }
2456 }
2457 }
2458
2459 return selected;
2460 }
2461
2462
interworking_select_network(struct wpa_supplicant * wpa_s)2463 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2464 {
2465 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2466 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2467 unsigned int count = 0;
2468 const char *type;
2469 int res;
2470 struct wpa_cred *cred, *selected_cred = NULL;
2471 struct wpa_cred *selected_home_cred = NULL;
2472 struct wpa_cred *selected2_cred = NULL;
2473 struct wpa_cred *selected2_home_cred = NULL;
2474
2475 wpa_s->network_select = 0;
2476
2477 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2478 wpa_s->auto_select);
2479 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2480 int excluded = 0;
2481 int bh, bss_load, conn_capab;
2482 cred = interworking_credentials_available(wpa_s, bss,
2483 &excluded);
2484 if (!cred)
2485 continue;
2486
2487 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2488 /*
2489 * We currently support only HS 2.0 networks and those
2490 * are required to use WPA2-Enterprise.
2491 */
2492 wpa_msg(wpa_s, MSG_DEBUG,
2493 "Interworking: Credential match with " MACSTR
2494 " but network does not use RSN",
2495 MAC2STR(bss->bssid));
2496 continue;
2497 }
2498 if (!excluded)
2499 count++;
2500 res = interworking_home_sp(wpa_s, bss->anqp ?
2501 bss->anqp->domain_name : NULL);
2502 if (res > 0)
2503 type = "home";
2504 else if (res == 0)
2505 type = "roaming";
2506 else
2507 type = "unknown";
2508 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2509 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2510 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2511 wpas_notify_interworking_ap_added(wpa_s, bss, cred, excluded,
2512 type, bh, bss_load,
2513 conn_capab);
2514 if (excluded)
2515 continue;
2516 if (wpa_s->auto_select ||
2517 (wpa_s->conf->auto_interworking &&
2518 wpa_s->auto_network_select)) {
2519 if (bh || bss_load || conn_capab) {
2520 if (selected2_cred == NULL ||
2521 cred_prio_cmp(cred, selected2_cred) > 0) {
2522 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2523 selected2 = bss;
2524 selected2_cred = cred;
2525 }
2526 if (res > 0 &&
2527 (selected2_home_cred == NULL ||
2528 cred_prio_cmp(cred, selected2_home_cred) >
2529 0)) {
2530 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2531 selected2_home = bss;
2532 selected2_home_cred = cred;
2533 }
2534 } else {
2535 if (selected_cred == NULL ||
2536 cred_prio_cmp(cred, selected_cred) > 0) {
2537 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2538 selected = bss;
2539 selected_cred = cred;
2540 }
2541 if (res > 0 &&
2542 (selected_home_cred == NULL ||
2543 cred_prio_cmp(cred, selected_home_cred) >
2544 0)) {
2545 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2546 selected_home = bss;
2547 selected_home_cred = cred;
2548 }
2549 }
2550 }
2551 }
2552
2553 if (selected_home && selected_home != selected &&
2554 selected_home_cred &&
2555 (selected_cred == NULL ||
2556 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2557 /* Prefer network operated by the Home SP */
2558 wpa_printf(MSG_DEBUG, "Interworking: Overrode selected with selected_home");
2559 selected = selected_home;
2560 selected_cred = selected_home_cred;
2561 }
2562
2563 if (!selected) {
2564 if (selected2_home) {
2565 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2566 selected = selected2_home;
2567 selected_cred = selected2_home_cred;
2568 } else if (selected2) {
2569 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2570 selected = selected2;
2571 selected_cred = selected2_cred;
2572 }
2573 }
2574
2575 if (count == 0) {
2576 /*
2577 * No matching network was found based on configured
2578 * credentials. Check whether any of the enabled network blocks
2579 * have matching APs.
2580 */
2581 if (interworking_find_network_match(wpa_s)) {
2582 wpa_msg(wpa_s, MSG_DEBUG,
2583 "Interworking: Possible BSS match for enabled network configurations");
2584 if (wpa_s->auto_select) {
2585 interworking_reconnect(wpa_s);
2586 return;
2587 }
2588 }
2589
2590 if (wpa_s->auto_network_select) {
2591 wpa_msg(wpa_s, MSG_DEBUG,
2592 "Interworking: Continue scanning after ANQP fetch");
2593 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2594 0);
2595 return;
2596 }
2597
2598 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2599 "with matching credentials found");
2600 if (wpa_s->wpa_state == WPA_SCANNING)
2601 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2602 }
2603
2604 wpas_notify_interworking_select_done(wpa_s);
2605
2606 if (selected) {
2607 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2608 MAC2STR(selected->bssid));
2609 selected = pick_best_roaming_partner(wpa_s, selected,
2610 selected_cred);
2611 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2612 " (after best roaming partner selection)",
2613 MAC2STR(selected->bssid));
2614 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2615 MAC2STR(selected->bssid));
2616 interworking_connect(wpa_s, selected, 0);
2617 } else if (wpa_s->wpa_state == WPA_SCANNING)
2618 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2619 }
2620
2621
2622 static struct wpa_bss_anqp *
interworking_match_anqp_info(struct wpa_supplicant * wpa_s,struct wpa_bss * bss)2623 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2624 {
2625 struct wpa_bss *other;
2626
2627 if (is_zero_ether_addr(bss->hessid))
2628 return NULL; /* Cannot be in the same homegenous ESS */
2629
2630 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2631 if (other == bss)
2632 continue;
2633 if (other->anqp == NULL)
2634 continue;
2635 if (other->anqp->roaming_consortium == NULL &&
2636 other->anqp->nai_realm == NULL &&
2637 other->anqp->anqp_3gpp == NULL &&
2638 other->anqp->domain_name == NULL)
2639 continue;
2640 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2641 continue;
2642 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2643 continue;
2644 if (bss->ssid_len != other->ssid_len ||
2645 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2646 continue;
2647
2648 wpa_msg(wpa_s, MSG_DEBUG,
2649 "Interworking: Share ANQP data with already fetched BSSID "
2650 MACSTR " and " MACSTR,
2651 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2652 other->anqp->users++;
2653 return other->anqp;
2654 }
2655
2656 return NULL;
2657 }
2658
2659
interworking_next_anqp_fetch(struct wpa_supplicant * wpa_s)2660 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2661 {
2662 struct wpa_bss *bss;
2663 int found = 0;
2664
2665 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2666 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2667 wpa_s->fetch_anqp_in_progress,
2668 wpa_s->fetch_osu_icon_in_progress);
2669
2670 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2671 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2672 return;
2673 }
2674
2675 #ifdef CONFIG_HS20
2676 if (wpa_s->fetch_osu_icon_in_progress) {
2677 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2678 hs20_next_osu_icon(wpa_s);
2679 return;
2680 }
2681 #endif /* CONFIG_HS20 */
2682
2683 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2684 if (!(bss->caps & IEEE80211_CAP_ESS))
2685 continue;
2686 if (!wpa_bss_ext_capab(bss, WLAN_EXT_CAPAB_INTERWORKING))
2687 continue; /* AP does not support Interworking */
2688 if (disallowed_bssid(wpa_s, bss->bssid) ||
2689 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2690 continue; /* Disallowed BSS */
2691
2692 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2693 if (bss->anqp == NULL) {
2694 bss->anqp = interworking_match_anqp_info(wpa_s,
2695 bss);
2696 if (bss->anqp) {
2697 /* Shared data already fetched */
2698 continue;
2699 }
2700 bss->anqp = wpa_bss_anqp_alloc();
2701 if (bss->anqp == NULL)
2702 break;
2703 }
2704 found++;
2705 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2706 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2707 MACSTR " (HESSID " MACSTR ")",
2708 MAC2STR(bss->bssid), MAC2STR(bss->hessid));
2709 interworking_anqp_send_req(wpa_s, bss);
2710 break;
2711 }
2712 }
2713
2714 if (found == 0) {
2715 #ifdef CONFIG_HS20
2716 if (wpa_s->fetch_osu_info) {
2717 if (wpa_s->num_prov_found == 0 &&
2718 wpa_s->fetch_osu_waiting_scan &&
2719 wpa_s->num_osu_scans < 3) {
2720 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2721 hs20_start_osu_scan(wpa_s);
2722 return;
2723 }
2724 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2725 hs20_osu_icon_fetch(wpa_s);
2726 return;
2727 }
2728 #endif /* CONFIG_HS20 */
2729 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2730 wpa_s->fetch_anqp_in_progress = 0;
2731 if (wpa_s->network_select)
2732 interworking_select_network(wpa_s);
2733 }
2734 }
2735
2736
interworking_start_fetch_anqp(struct wpa_supplicant * wpa_s)2737 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2738 {
2739 struct wpa_bss *bss;
2740
2741 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2742 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2743
2744 wpa_s->fetch_anqp_in_progress = 1;
2745
2746 /*
2747 * Start actual ANQP operation from eloop call to make sure the loop
2748 * does not end up using excessive recursion.
2749 */
2750 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2751 }
2752
2753
interworking_fetch_anqp(struct wpa_supplicant * wpa_s)2754 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2755 {
2756 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2757 return 0;
2758
2759 wpa_s->network_select = 0;
2760 wpa_s->fetch_all_anqp = 1;
2761 wpa_s->fetch_osu_info = 0;
2762
2763 interworking_start_fetch_anqp(wpa_s);
2764
2765 return 0;
2766 }
2767
2768
interworking_stop_fetch_anqp(struct wpa_supplicant * wpa_s)2769 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2770 {
2771 if (!wpa_s->fetch_anqp_in_progress)
2772 return;
2773
2774 wpa_s->fetch_anqp_in_progress = 0;
2775 }
2776
2777
anqp_send_req(struct wpa_supplicant * wpa_s,const u8 * dst,int freq,u16 info_ids[],size_t num_ids,u32 subtypes,u32 mbo_subtypes)2778 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, int freq,
2779 u16 info_ids[], size_t num_ids, u32 subtypes,
2780 u32 mbo_subtypes)
2781 {
2782 struct wpabuf *buf;
2783 struct wpabuf *extra_buf = NULL;
2784 int ret = 0;
2785 struct wpa_bss *bss;
2786 int res;
2787
2788 bss = wpa_bss_get_bssid(wpa_s, dst);
2789 if (!bss && !freq) {
2790 wpa_printf(MSG_WARNING,
2791 "ANQP: Cannot send query without BSS freq info");
2792 return -1;
2793 }
2794
2795 if (bss)
2796 wpa_bss_anqp_unshare_alloc(bss);
2797 if (bss && !freq)
2798 freq = bss->freq;
2799
2800 wpa_msg(wpa_s, MSG_DEBUG,
2801 "ANQP: Query Request to " MACSTR " for %u id(s)",
2802 MAC2STR(dst), (unsigned int) num_ids);
2803
2804 #ifdef CONFIG_HS20
2805 if (subtypes != 0) {
2806 extra_buf = wpabuf_alloc(100);
2807 if (extra_buf == NULL)
2808 return -1;
2809 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
2810 }
2811 #endif /* CONFIG_HS20 */
2812
2813 #ifdef CONFIG_MBO
2814 if (mbo_subtypes) {
2815 struct wpabuf *mbo;
2816
2817 if (!bss) {
2818 wpa_printf(MSG_WARNING,
2819 "ANQP: Cannot send MBO query to unknown BSS "
2820 MACSTR, MAC2STR(dst));
2821 wpabuf_free(extra_buf);
2822 return -1;
2823 }
2824
2825 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes);
2826 if (mbo) {
2827 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
2828 wpabuf_free(extra_buf);
2829 wpabuf_free(mbo);
2830 return -1;
2831 }
2832 wpabuf_put_buf(extra_buf, mbo);
2833 wpabuf_free(mbo);
2834 }
2835 }
2836 #endif /* CONFIG_MBO */
2837
2838 buf = anqp_build_req(info_ids, num_ids, extra_buf);
2839 wpabuf_free(extra_buf);
2840 if (buf == NULL)
2841 return -1;
2842
2843 res = gas_query_req(wpa_s->gas, dst, freq, 0, 0, buf, anqp_resp_cb,
2844 wpa_s);
2845 if (res < 0) {
2846 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2847 wpabuf_free(buf);
2848 ret = -1;
2849 } else {
2850 wpa_msg(wpa_s, MSG_DEBUG,
2851 "ANQP: Query started with dialog token %u", res);
2852 }
2853
2854 return ret;
2855 }
2856
2857
anqp_add_extra(struct wpa_supplicant * wpa_s,struct wpa_bss_anqp * anqp,u16 info_id,const u8 * data,size_t slen,bool protected_response)2858 static void anqp_add_extra(struct wpa_supplicant *wpa_s,
2859 struct wpa_bss_anqp *anqp, u16 info_id,
2860 const u8 *data, size_t slen, bool protected_response)
2861 {
2862 struct wpa_bss_anqp_elem *tmp, *elem = NULL;
2863
2864 if (!anqp)
2865 return;
2866
2867 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
2868 list) {
2869 if (tmp->infoid == info_id) {
2870 elem = tmp;
2871 break;
2872 }
2873 }
2874
2875 if (!elem) {
2876 elem = os_zalloc(sizeof(*elem));
2877 if (!elem)
2878 return;
2879 elem->infoid = info_id;
2880 dl_list_add(&anqp->anqp_elems, &elem->list);
2881 } else {
2882 wpabuf_free(elem->payload);
2883 }
2884
2885 elem->protected_response = protected_response;
2886 elem->payload = wpabuf_alloc_copy(data, slen);
2887 if (!elem->payload) {
2888 dl_list_del(&elem->list);
2889 os_free(elem);
2890 }
2891 }
2892
2893
interworking_parse_venue_url(struct wpa_supplicant * wpa_s,const u8 * data,size_t len)2894 static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s,
2895 const u8 *data, size_t len)
2896 {
2897 const u8 *pos = data, *end = data + len;
2898 char url[255];
2899
2900 while (end - pos >= 2) {
2901 u8 slen, num;
2902
2903 slen = *pos++;
2904 if (slen < 1 || slen > end - pos) {
2905 wpa_printf(MSG_DEBUG,
2906 "ANQP: Truncated Venue URL Duple field");
2907 return;
2908 }
2909
2910 num = *pos++;
2911 os_memcpy(url, pos, slen - 1);
2912 url[slen - 1] = '\0';
2913 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url);
2914 pos += slen - 1;
2915 }
2916 }
2917
2918
interworking_parse_rx_anqp_resp(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,const u8 * sa,u16 info_id,const u8 * data,size_t slen,u8 dialog_token)2919 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2920 struct wpa_bss *bss, const u8 *sa,
2921 u16 info_id,
2922 const u8 *data, size_t slen,
2923 u8 dialog_token)
2924 {
2925 const u8 *pos = data;
2926 struct wpa_bss_anqp *anqp = NULL;
2927 u8 type;
2928 bool protected_response;
2929
2930 if (bss)
2931 anqp = bss->anqp;
2932
2933 switch (info_id) {
2934 case ANQP_CAPABILITY_LIST:
2935 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2936 " ANQP Capability list", MAC2STR(sa));
2937 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2938 pos, slen);
2939 if (anqp) {
2940 wpabuf_free(anqp->capability_list);
2941 anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2942 }
2943 break;
2944 case ANQP_VENUE_NAME:
2945 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2946 " Venue Name", MAC2STR(sa));
2947 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2948 if (anqp) {
2949 wpabuf_free(anqp->venue_name);
2950 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2951 }
2952 break;
2953 case ANQP_NETWORK_AUTH_TYPE:
2954 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2955 " Network Authentication Type information",
2956 MAC2STR(sa));
2957 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2958 "Type", pos, slen);
2959 if (anqp) {
2960 wpabuf_free(anqp->network_auth_type);
2961 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2962 }
2963 break;
2964 case ANQP_ROAMING_CONSORTIUM:
2965 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2966 " Roaming Consortium list", MAC2STR(sa));
2967 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2968 pos, slen);
2969 if (anqp) {
2970 wpabuf_free(anqp->roaming_consortium);
2971 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2972 }
2973 break;
2974 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2975 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2976 " IP Address Type Availability information",
2977 MAC2STR(sa));
2978 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2979 pos, slen);
2980 if (anqp) {
2981 wpabuf_free(anqp->ip_addr_type_availability);
2982 anqp->ip_addr_type_availability =
2983 wpabuf_alloc_copy(pos, slen);
2984 }
2985 break;
2986 case ANQP_NAI_REALM:
2987 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2988 " NAI Realm list", MAC2STR(sa));
2989 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2990 if (anqp) {
2991 wpabuf_free(anqp->nai_realm);
2992 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2993 }
2994 break;
2995 case ANQP_3GPP_CELLULAR_NETWORK:
2996 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2997 " 3GPP Cellular Network information", MAC2STR(sa));
2998 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2999 pos, slen);
3000 if (anqp) {
3001 wpabuf_free(anqp->anqp_3gpp);
3002 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
3003 }
3004 break;
3005 case ANQP_DOMAIN_NAME:
3006 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
3007 " Domain Name list", MAC2STR(sa));
3008 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
3009 if (anqp) {
3010 wpabuf_free(anqp->domain_name);
3011 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
3012 }
3013 break;
3014 #ifdef CONFIG_FILS
3015 case ANQP_FILS_REALM_INFO:
3016 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
3017 " FILS Realm Information", MAC2STR(sa));
3018 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information",
3019 pos, slen);
3020 if (anqp) {
3021 wpabuf_free(anqp->fils_realm_info);
3022 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen);
3023 }
3024 break;
3025 #endif /* CONFIG_FILS */
3026 case ANQP_VENUE_URL:
3027 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL",
3028 MAC2STR(sa));
3029 protected_response = pmf_in_use(wpa_s, sa);
3030 anqp_add_extra(wpa_s, anqp, info_id, pos, slen,
3031 protected_response);
3032
3033 if (!protected_response) {
3034 wpa_printf(MSG_DEBUG,
3035 "ANQP: Ignore Venue URL since PMF was not enabled");
3036 break;
3037 }
3038 interworking_parse_venue_url(wpa_s, pos, slen);
3039 break;
3040 case ANQP_VENDOR_SPECIFIC:
3041 if (slen < 3)
3042 return;
3043
3044 switch (WPA_GET_BE24(pos)) {
3045 case OUI_WFA:
3046 pos += 3;
3047 slen -= 3;
3048
3049 if (slen < 1)
3050 return;
3051 type = *pos++;
3052 slen--;
3053
3054 switch (type) {
3055 #ifdef CONFIG_HS20
3056 case HS20_ANQP_OUI_TYPE:
3057 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
3058 pos, slen,
3059 dialog_token);
3060 break;
3061 #endif /* CONFIG_HS20 */
3062 #ifdef CONFIG_MBO
3063 case MBO_ANQP_OUI_TYPE:
3064 mbo_parse_rx_anqp_resp(wpa_s, bss, sa,
3065 pos, slen);
3066 break;
3067 #endif /* CONFIG_MBO */
3068 default:
3069 wpa_msg(wpa_s, MSG_DEBUG,
3070 "ANQP: Unsupported ANQP vendor type %u",
3071 type);
3072 break;
3073 }
3074 break;
3075 default:
3076 wpa_msg(wpa_s, MSG_DEBUG,
3077 "Interworking: Unsupported vendor-specific ANQP OUI %06x",
3078 WPA_GET_BE24(pos));
3079 return;
3080 }
3081 break;
3082 default:
3083 wpa_msg(wpa_s, MSG_DEBUG,
3084 "Interworking: Unsupported ANQP Info ID %u", info_id);
3085 anqp_add_extra(wpa_s, anqp, info_id, data, slen,
3086 pmf_in_use(wpa_s, sa));
3087 break;
3088 }
3089 }
3090
3091
anqp_resp_cb(void * ctx,const u8 * dst,u8 dialog_token,enum gas_query_result result,const struct wpabuf * adv_proto,const struct wpabuf * resp,u16 status_code)3092 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
3093 enum gas_query_result result,
3094 const struct wpabuf *adv_proto,
3095 const struct wpabuf *resp, u16 status_code)
3096 {
3097 struct wpa_supplicant *wpa_s = ctx;
3098 const u8 *pos;
3099 const u8 *end;
3100 u16 info_id;
3101 u16 slen;
3102 struct wpa_bss *bss = NULL, *tmp;
3103 const char *anqp_result = "SUCCESS";
3104
3105 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
3106 " dialog_token=%u result=%d status_code=%u",
3107 MAC2STR(dst), dialog_token, result, status_code);
3108 if (result != GAS_QUERY_SUCCESS) {
3109 #ifdef CONFIG_HS20
3110 if (wpa_s->fetch_osu_icon_in_progress)
3111 hs20_icon_fetch_failed(wpa_s);
3112 #endif /* CONFIG_HS20 */
3113 anqp_result = "FAILURE";
3114 goto out;
3115 }
3116
3117 pos = wpabuf_head(adv_proto);
3118 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
3119 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
3120 wpa_msg(wpa_s, MSG_DEBUG,
3121 "ANQP: Unexpected Advertisement Protocol in response");
3122 #ifdef CONFIG_HS20
3123 if (wpa_s->fetch_osu_icon_in_progress)
3124 hs20_icon_fetch_failed(wpa_s);
3125 #endif /* CONFIG_HS20 */
3126 anqp_result = "INVALID_FRAME";
3127 goto out;
3128 }
3129
3130 /*
3131 * If possible, select the BSS entry based on which BSS entry was used
3132 * for the request. This can help in cases where multiple BSS entries
3133 * may exist for the same AP.
3134 */
3135 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
3136 if (tmp == wpa_s->interworking_gas_bss &&
3137 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
3138 bss = tmp;
3139 break;
3140 }
3141 }
3142 if (bss == NULL)
3143 bss = wpa_bss_get_bssid(wpa_s, dst);
3144
3145 pos = wpabuf_head(resp);
3146 end = pos + wpabuf_len(resp);
3147
3148 while (pos < end) {
3149 unsigned int left = end - pos;
3150
3151 if (left < 4) {
3152 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
3153 anqp_result = "INVALID_FRAME";
3154 goto out_parse_done;
3155 }
3156 info_id = WPA_GET_LE16(pos);
3157 pos += 2;
3158 slen = WPA_GET_LE16(pos);
3159 pos += 2;
3160 left -= 4;
3161 if (left < slen) {
3162 wpa_msg(wpa_s, MSG_DEBUG,
3163 "ANQP: Invalid element length for Info ID %u",
3164 info_id);
3165 anqp_result = "INVALID_FRAME";
3166 goto out_parse_done;
3167 }
3168 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
3169 slen, dialog_token);
3170 pos += slen;
3171 }
3172
3173 out_parse_done:
3174 #ifdef CONFIG_HS20
3175 hs20_notify_parse_done(wpa_s);
3176 #endif /* CONFIG_HS20 */
3177 out:
3178 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
3179 MAC2STR(dst), anqp_result);
3180 wpas_notify_anqp_query_done(wpa_s, dst, anqp_result, bss ? bss->anqp : NULL);
3181 }
3182
3183
interworking_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)3184 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
3185 struct wpa_scan_results *scan_res)
3186 {
3187 wpa_msg(wpa_s, MSG_DEBUG,
3188 "Interworking: Scan results available - start ANQP fetch");
3189 interworking_start_fetch_anqp(wpa_s);
3190 }
3191
3192
interworking_select(struct wpa_supplicant * wpa_s,int auto_select,int * freqs)3193 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
3194 int *freqs)
3195 {
3196 interworking_stop_fetch_anqp(wpa_s);
3197 wpa_s->network_select = 1;
3198 wpa_s->auto_network_select = 0;
3199 wpa_s->auto_select = !!auto_select;
3200 wpa_s->fetch_all_anqp = 0;
3201 wpa_s->fetch_osu_info = 0;
3202 wpa_msg(wpa_s, MSG_DEBUG,
3203 "Interworking: Start scan for network selection");
3204 wpa_s->scan_res_handler = interworking_scan_res_handler;
3205 wpa_s->normal_scans = 0;
3206 wpa_s->scan_req = MANUAL_SCAN_REQ;
3207 os_free(wpa_s->manual_scan_freqs);
3208 wpa_s->manual_scan_freqs = freqs;
3209 wpa_s->after_wps = 0;
3210 wpa_s->known_wps_freq = 0;
3211 wpa_supplicant_req_scan(wpa_s, 0, 0);
3212
3213 return 0;
3214 }
3215
3216
gas_resp_cb(void * ctx,const u8 * addr,u8 dialog_token,enum gas_query_result result,const struct wpabuf * adv_proto,const struct wpabuf * resp,u16 status_code)3217 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
3218 enum gas_query_result result,
3219 const struct wpabuf *adv_proto,
3220 const struct wpabuf *resp, u16 status_code)
3221 {
3222 struct wpa_supplicant *wpa_s = ctx;
3223 struct wpabuf *n;
3224
3225 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
3226 " dialog_token=%d status_code=%d resp_len=%d",
3227 MAC2STR(addr), dialog_token, status_code,
3228 resp ? (int) wpabuf_len(resp) : -1);
3229 if (!resp)
3230 return;
3231
3232 n = wpabuf_dup(resp);
3233 if (n == NULL)
3234 return;
3235 wpabuf_free(wpa_s->prev_gas_resp);
3236 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
3237 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
3238 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
3239 wpa_s->last_gas_resp = n;
3240 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
3241 wpa_s->last_gas_dialog_token = dialog_token;
3242 }
3243
3244
gas_send_request(struct wpa_supplicant * wpa_s,const u8 * dst,const struct wpabuf * adv_proto,const struct wpabuf * query)3245 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3246 const struct wpabuf *adv_proto,
3247 const struct wpabuf *query)
3248 {
3249 struct wpabuf *buf;
3250 int ret = 0;
3251 int freq;
3252 struct wpa_bss *bss;
3253 int res;
3254 size_t len;
3255 u8 query_resp_len_limit = 0;
3256
3257 freq = wpa_s->assoc_freq;
3258 bss = wpa_bss_get_bssid(wpa_s, dst);
3259 if (bss)
3260 freq = bss->freq;
3261 if (freq <= 0)
3262 return -1;
3263
3264 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3265 MAC2STR(dst), freq);
3266 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3267 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3268
3269 len = 3 + wpabuf_len(adv_proto) + 2;
3270 if (query)
3271 len += wpabuf_len(query);
3272 buf = gas_build_initial_req(0, len);
3273 if (buf == NULL)
3274 return -1;
3275
3276 /* Advertisement Protocol IE */
3277 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3278 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3279 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3280 wpabuf_put_buf(buf, adv_proto);
3281
3282 /* GAS Query */
3283 if (query) {
3284 wpabuf_put_le16(buf, wpabuf_len(query));
3285 wpabuf_put_buf(buf, query);
3286 } else
3287 wpabuf_put_le16(buf, 0);
3288
3289 res = gas_query_req(wpa_s->gas, dst, freq, 0, 0, buf, gas_resp_cb,
3290 wpa_s);
3291 if (res < 0) {
3292 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3293 wpabuf_free(buf);
3294 ret = -1;
3295 } else
3296 wpa_msg(wpa_s, MSG_DEBUG,
3297 "GAS: Query started with dialog token %u", res);
3298
3299 return ret;
3300 }
3301