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[thirdparty/hostap.git] / wpa_supplicant / interworking.c
1 /*
2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "common/gas.h"
14 #include "common/wpa_ctrl.h"
15 #include "utils/pcsc_funcs.h"
16 #include "drivers/driver.h"
17 #include "eap_common/eap_defs.h"
18 #include "eap_peer/eap.h"
19 #include "eap_peer/eap_methods.h"
20 #include "wpa_supplicant_i.h"
21 #include "config.h"
22 #include "config_ssid.h"
23 #include "bss.h"
24 #include "scan.h"
25 #include "notify.h"
26 #include "gas_query.h"
27 #include "hs20_supplicant.h"
28 #include "interworking.h"
29
30
31 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
32 #define INTERWORKING_3GPP
33 #else
34 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
35 #define INTERWORKING_3GPP
36 #else
37 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
38 #define INTERWORKING_3GPP
39 #endif
40 #endif
41 #endif
42
43 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
44
45
46 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
47 {
48 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
49 wpa_supplicant_cancel_sched_scan(wpa_s);
50 wpa_supplicant_deauthenticate(wpa_s,
51 WLAN_REASON_DEAUTH_LEAVING);
52 }
53 wpa_s->disconnected = 0;
54 wpa_s->reassociate = 1;
55
56 if (wpa_s->last_scan_res_used > 0) {
57 struct os_time now;
58 os_get_time(&now);
59 if (now.sec - wpa_s->last_scan.sec <= 5) {
60 wpa_printf(MSG_DEBUG, "Interworking: Old scan results "
61 "are fresh - connect without new scan");
62 if (wpas_select_network_from_last_scan(wpa_s) >= 0)
63 return;
64 }
65 }
66
67 wpa_supplicant_req_scan(wpa_s, 0, 0);
68 }
69
70
71 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
72 struct wpabuf *extra)
73 {
74 struct wpabuf *buf;
75 size_t i;
76 u8 *len_pos;
77
78 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
79 (extra ? wpabuf_len(extra) : 0));
80 if (buf == NULL)
81 return NULL;
82
83 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
84 for (i = 0; i < num_ids; i++)
85 wpabuf_put_le16(buf, info_ids[i]);
86 gas_anqp_set_element_len(buf, len_pos);
87 if (extra)
88 wpabuf_put_buf(buf, extra);
89
90 gas_anqp_set_len(buf);
91
92 return buf;
93 }
94
95
96 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
97 u8 dialog_token,
98 enum gas_query_result result,
99 const struct wpabuf *adv_proto,
100 const struct wpabuf *resp,
101 u16 status_code)
102 {
103 struct wpa_supplicant *wpa_s = ctx;
104
105 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
106 status_code);
107 interworking_next_anqp_fetch(wpa_s);
108 }
109
110
111 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
112 {
113 struct wpa_cred *cred;
114
115 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
116 if (cred->roaming_consortium_len)
117 return 1;
118 }
119 return 0;
120 }
121
122
123 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
124 {
125 struct wpa_cred *cred;
126
127 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
128 if (cred->pcsc || cred->imsi)
129 return 1;
130 }
131 return 0;
132 }
133
134
135 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
136 {
137 struct wpa_cred *cred;
138
139 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
140 if (cred->pcsc || cred->imsi)
141 continue;
142 if (!cred->eap_method)
143 return 1;
144 if (cred->realm && cred->roaming_consortium_len == 0)
145 return 1;
146 }
147 return 0;
148 }
149
150
151 static int cred_with_domain(struct wpa_supplicant *wpa_s)
152 {
153 struct wpa_cred *cred;
154
155 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
156 if (cred->domain || cred->pcsc || cred->imsi)
157 return 1;
158 }
159 return 0;
160 }
161
162
163 static int additional_roaming_consortiums(struct wpa_bss *bss)
164 {
165 const u8 *ie;
166 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
167 if (ie == NULL || ie[1] == 0)
168 return 0;
169 return ie[2]; /* Number of ANQP OIs */
170 }
171
172
173 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
174 struct wpa_bss *bss)
175 {
176 struct wpabuf *buf;
177 int ret = 0;
178 int res;
179 u16 info_ids[8];
180 size_t num_info_ids = 0;
181 struct wpabuf *extra = NULL;
182 int all = wpa_s->fetch_all_anqp;
183
184 wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
185 MAC2STR(bss->bssid));
186
187 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
188 if (all) {
189 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
190 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
191 }
192 if (all || (cred_with_roaming_consortium(wpa_s) &&
193 additional_roaming_consortiums(bss)))
194 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
195 if (all)
196 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
197 if (all || cred_with_nai_realm(wpa_s))
198 info_ids[num_info_ids++] = ANQP_NAI_REALM;
199 if (all || cred_with_3gpp(wpa_s))
200 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
201 if (all || cred_with_domain(wpa_s))
202 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
203 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
204 (u8 *) info_ids, num_info_ids * 2);
205
206 #ifdef CONFIG_HS20
207 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
208 u8 *len_pos;
209
210 extra = wpabuf_alloc(100);
211 if (!extra)
212 return -1;
213
214 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
215 wpabuf_put_be24(extra, OUI_WFA);
216 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
217 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
218 wpabuf_put_u8(extra, 0); /* Reserved */
219 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
220 if (all) {
221 wpabuf_put_u8(extra,
222 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
223 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
224 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
225 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
226 }
227 gas_anqp_set_element_len(extra, len_pos);
228 }
229 #endif /* CONFIG_HS20 */
230
231 buf = anqp_build_req(info_ids, num_info_ids, extra);
232 wpabuf_free(extra);
233 if (buf == NULL)
234 return -1;
235
236 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
237 interworking_anqp_resp_cb, wpa_s);
238 if (res < 0) {
239 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
240 ret = -1;
241 } else
242 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
243 "%u", res);
244
245 wpabuf_free(buf);
246 return ret;
247 }
248
249
250 struct nai_realm_eap {
251 u8 method;
252 u8 inner_method;
253 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
254 u8 cred_type;
255 u8 tunneled_cred_type;
256 };
257
258 struct nai_realm {
259 u8 encoding;
260 char *realm;
261 u8 eap_count;
262 struct nai_realm_eap *eap;
263 };
264
265
266 static void nai_realm_free(struct nai_realm *realms, u16 count)
267 {
268 u16 i;
269
270 if (realms == NULL)
271 return;
272 for (i = 0; i < count; i++) {
273 os_free(realms[i].eap);
274 os_free(realms[i].realm);
275 }
276 os_free(realms);
277 }
278
279
280 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
281 const u8 *end)
282 {
283 u8 elen, auth_count, a;
284 const u8 *e_end;
285
286 if (pos + 3 > end) {
287 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
288 return NULL;
289 }
290
291 elen = *pos++;
292 if (pos + elen > end || elen < 2) {
293 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
294 return NULL;
295 }
296 e_end = pos + elen;
297 e->method = *pos++;
298 auth_count = *pos++;
299 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
300 elen, e->method, auth_count);
301
302 for (a = 0; a < auth_count; a++) {
303 u8 id, len;
304
305 if (pos + 2 > end || pos + 2 + pos[1] > end) {
306 wpa_printf(MSG_DEBUG, "No room for Authentication "
307 "Parameter subfield");
308 return NULL;
309 }
310
311 id = *pos++;
312 len = *pos++;
313
314 switch (id) {
315 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
316 if (len < 1)
317 break;
318 e->inner_non_eap = *pos;
319 if (e->method != EAP_TYPE_TTLS)
320 break;
321 switch (*pos) {
322 case NAI_REALM_INNER_NON_EAP_PAP:
323 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
324 break;
325 case NAI_REALM_INNER_NON_EAP_CHAP:
326 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
327 break;
328 case NAI_REALM_INNER_NON_EAP_MSCHAP:
329 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
330 break;
331 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
332 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
333 break;
334 }
335 break;
336 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
337 if (len < 1)
338 break;
339 e->inner_method = *pos;
340 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
341 e->inner_method);
342 break;
343 case NAI_REALM_EAP_AUTH_CRED_TYPE:
344 if (len < 1)
345 break;
346 e->cred_type = *pos;
347 wpa_printf(MSG_DEBUG, "Credential Type: %u",
348 e->cred_type);
349 break;
350 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
351 if (len < 1)
352 break;
353 e->tunneled_cred_type = *pos;
354 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
355 "Type: %u", e->tunneled_cred_type);
356 break;
357 default:
358 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
359 "Parameter: id=%u len=%u", id, len);
360 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
361 "Value", pos, len);
362 break;
363 }
364
365 pos += len;
366 }
367
368 return e_end;
369 }
370
371
372 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
373 const u8 *end)
374 {
375 u16 len;
376 const u8 *f_end;
377 u8 realm_len, e;
378
379 if (end - pos < 4) {
380 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
381 "fixed fields");
382 return NULL;
383 }
384
385 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
386 pos += 2;
387 if (pos + len > end || len < 3) {
388 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
389 "(len=%u; left=%u)",
390 len, (unsigned int) (end - pos));
391 return NULL;
392 }
393 f_end = pos + len;
394
395 r->encoding = *pos++;
396 realm_len = *pos++;
397 if (pos + realm_len > f_end) {
398 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
399 "(len=%u; left=%u)",
400 realm_len, (unsigned int) (f_end - pos));
401 return NULL;
402 }
403 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
404 r->realm = os_malloc(realm_len + 1);
405 if (r->realm == NULL)
406 return NULL;
407 os_memcpy(r->realm, pos, realm_len);
408 r->realm[realm_len] = '\0';
409 pos += realm_len;
410
411 if (pos + 1 > f_end) {
412 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
413 return NULL;
414 }
415 r->eap_count = *pos++;
416 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
417 if (pos + r->eap_count * 3 > f_end) {
418 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
419 return NULL;
420 }
421 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
422 if (r->eap == NULL)
423 return NULL;
424
425 for (e = 0; e < r->eap_count; e++) {
426 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
427 if (pos == NULL)
428 return NULL;
429 }
430
431 return f_end;
432 }
433
434
435 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
436 {
437 struct nai_realm *realm;
438 const u8 *pos, *end;
439 u16 i, num;
440
441 if (anqp == NULL || wpabuf_len(anqp) < 2)
442 return NULL;
443
444 pos = wpabuf_head_u8(anqp);
445 end = pos + wpabuf_len(anqp);
446 num = WPA_GET_LE16(pos);
447 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
448 pos += 2;
449
450 if (num * 5 > end - pos) {
451 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
452 "enough data (%u octets) for that many realms",
453 num, (unsigned int) (end - pos));
454 return NULL;
455 }
456
457 realm = os_calloc(num, sizeof(struct nai_realm));
458 if (realm == NULL)
459 return NULL;
460
461 for (i = 0; i < num; i++) {
462 pos = nai_realm_parse_realm(&realm[i], pos, end);
463 if (pos == NULL) {
464 nai_realm_free(realm, num);
465 return NULL;
466 }
467 }
468
469 *count = num;
470 return realm;
471 }
472
473
474 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
475 {
476 char *tmp, *pos, *end;
477 int match = 0;
478
479 if (realm->realm == NULL || home_realm == NULL)
480 return 0;
481
482 if (os_strchr(realm->realm, ';') == NULL)
483 return os_strcasecmp(realm->realm, home_realm) == 0;
484
485 tmp = os_strdup(realm->realm);
486 if (tmp == NULL)
487 return 0;
488
489 pos = tmp;
490 while (*pos) {
491 end = os_strchr(pos, ';');
492 if (end)
493 *end = '\0';
494 if (os_strcasecmp(pos, home_realm) == 0) {
495 match = 1;
496 break;
497 }
498 if (end == NULL)
499 break;
500 pos = end + 1;
501 }
502
503 os_free(tmp);
504
505 return match;
506 }
507
508
509 static int nai_realm_cred_username(struct nai_realm_eap *eap)
510 {
511 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
512 return 0; /* method not supported */
513
514 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP) {
515 /* Only tunneled methods with username/password supported */
516 return 0;
517 }
518
519 if (eap->method == EAP_TYPE_PEAP &&
520 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
521 return 0;
522
523 if (eap->method == EAP_TYPE_TTLS) {
524 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
525 return 1; /* Assume TTLS/MSCHAPv2 is used */
526 if (eap->inner_method &&
527 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
528 return 0;
529 if (eap->inner_non_eap &&
530 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
531 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
532 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
533 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
534 return 0;
535 }
536
537 if (eap->inner_method &&
538 eap->inner_method != EAP_TYPE_GTC &&
539 eap->inner_method != EAP_TYPE_MSCHAPV2)
540 return 0;
541
542 return 1;
543 }
544
545
546 static int nai_realm_cred_cert(struct nai_realm_eap *eap)
547 {
548 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
549 return 0; /* method not supported */
550
551 if (eap->method != EAP_TYPE_TLS) {
552 /* Only EAP-TLS supported for credential authentication */
553 return 0;
554 }
555
556 return 1;
557 }
558
559
560 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
561 struct nai_realm *realm)
562 {
563 u8 e;
564
565 if (cred == NULL ||
566 cred->username == NULL ||
567 cred->username[0] == '\0' ||
568 ((cred->password == NULL ||
569 cred->password[0] == '\0') &&
570 (cred->private_key == NULL ||
571 cred->private_key[0] == '\0')))
572 return NULL;
573
574 for (e = 0; e < realm->eap_count; e++) {
575 struct nai_realm_eap *eap = &realm->eap[e];
576 if (cred->password && cred->password[0] &&
577 nai_realm_cred_username(eap))
578 return eap;
579 if (cred->private_key && cred->private_key[0] &&
580 nai_realm_cred_cert(eap))
581 return eap;
582 }
583
584 return NULL;
585 }
586
587
588 #ifdef INTERWORKING_3GPP
589
590 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
591 {
592 u8 plmn[3];
593 const u8 *pos, *end;
594 u8 udhl;
595
596 /* See Annex A of 3GPP TS 24.234 v8.1.0 for description */
597 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
598 plmn[1] = imsi[2] - '0';
599 /* default to MNC length 3 if unknown */
600 if (mnc_len != 2)
601 plmn[1] |= (imsi[5] - '0') << 4;
602 else
603 plmn[1] |= 0xf0;
604 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
605
606 if (anqp == NULL)
607 return 0;
608 pos = wpabuf_head_u8(anqp);
609 end = pos + wpabuf_len(anqp);
610 if (pos + 2 > end)
611 return 0;
612 if (*pos != 0) {
613 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
614 return 0;
615 }
616 pos++;
617 udhl = *pos++;
618 if (pos + udhl > end) {
619 wpa_printf(MSG_DEBUG, "Invalid UDHL");
620 return 0;
621 }
622 end = pos + udhl;
623
624 while (pos + 2 <= end) {
625 u8 iei, len;
626 const u8 *l_end;
627 iei = *pos++;
628 len = *pos++ & 0x7f;
629 if (pos + len > end)
630 break;
631 l_end = pos + len;
632
633 if (iei == 0 && len > 0) {
634 /* PLMN List */
635 u8 num, i;
636 num = *pos++;
637 for (i = 0; i < num; i++) {
638 if (pos + 3 > end)
639 break;
640 if (os_memcmp(pos, plmn, 3) == 0)
641 return 1; /* Found matching PLMN */
642 pos += 3;
643 }
644 }
645
646 pos = l_end;
647 }
648
649 return 0;
650 }
651
652
653 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
654 size_t mnc_len, char prefix)
655 {
656 const char *sep, *msin;
657 char *end, *pos;
658 size_t msin_len, plmn_len;
659
660 /*
661 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
662 * Root NAI:
663 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
664 * <MNC> is zero-padded to three digits in case two-digit MNC is used
665 */
666
667 if (imsi == NULL || os_strlen(imsi) > 16) {
668 wpa_printf(MSG_DEBUG, "No valid IMSI available");
669 return -1;
670 }
671 sep = os_strchr(imsi, '-');
672 if (sep) {
673 plmn_len = sep - imsi;
674 msin = sep + 1;
675 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
676 plmn_len = 3 + mnc_len;
677 msin = imsi + plmn_len;
678 } else
679 return -1;
680 if (plmn_len != 5 && plmn_len != 6)
681 return -1;
682 msin_len = os_strlen(msin);
683
684 pos = nai;
685 end = nai + nai_len;
686 if (prefix)
687 *pos++ = prefix;
688 os_memcpy(pos, imsi, plmn_len);
689 pos += plmn_len;
690 os_memcpy(pos, msin, msin_len);
691 pos += msin_len;
692 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
693 if (plmn_len == 5) {
694 *pos++ = '0';
695 *pos++ = imsi[3];
696 *pos++ = imsi[4];
697 } else {
698 *pos++ = imsi[3];
699 *pos++ = imsi[4];
700 *pos++ = imsi[5];
701 }
702 pos += os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
703 imsi[0], imsi[1], imsi[2]);
704
705 return 0;
706 }
707
708
709 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
710 {
711 char nai[100];
712 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
713 return -1;
714 return wpa_config_set_quoted(ssid, "identity", nai);
715 }
716
717 #endif /* INTERWORKING_3GPP */
718
719
720 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
721 struct wpa_ssid *ssid)
722 {
723 if (wpa_config_set(ssid, "key_mgmt",
724 wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
725 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP", 0) < 0)
726 return -1;
727 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
728 return -1;
729 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
730 return -1;
731 return 0;
732 }
733
734
735 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
736 struct wpa_bss *bss)
737 {
738 #ifdef INTERWORKING_3GPP
739 struct wpa_cred *cred;
740 struct wpa_ssid *ssid;
741 const u8 *ie;
742 int eap_type;
743 int res;
744 char prefix;
745
746 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
747 return -1;
748
749 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
750 char *sep;
751 const char *imsi;
752 int mnc_len;
753
754 #ifdef PCSC_FUNCS
755 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
756 wpa_s->imsi[0]) {
757 imsi = wpa_s->imsi;
758 mnc_len = wpa_s->mnc_len;
759 goto compare;
760 }
761 #endif /* PCSC_FUNCS */
762
763 if (cred->imsi == NULL || !cred->imsi[0] ||
764 cred->milenage == NULL || !cred->milenage[0])
765 continue;
766
767 sep = os_strchr(cred->imsi, '-');
768 if (sep == NULL ||
769 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
770 continue;
771 mnc_len = sep - cred->imsi - 3;
772 imsi = cred->imsi;
773
774 #ifdef PCSC_FUNCS
775 compare:
776 #endif /* PCSC_FUNCS */
777 if (plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len))
778 break;
779 }
780 if (cred == NULL)
781 return -1;
782
783 ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
784 if (ie == NULL)
785 return -1;
786 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
787 MAC2STR(bss->bssid));
788
789 ssid = wpa_config_add_network(wpa_s->conf);
790 if (ssid == NULL)
791 return -1;
792 ssid->parent_cred = cred;
793
794 wpas_notify_network_added(wpa_s, ssid);
795 wpa_config_set_network_defaults(ssid);
796 ssid->priority = cred->priority;
797 ssid->temporary = 1;
798 ssid->ssid = os_zalloc(ie[1] + 1);
799 if (ssid->ssid == NULL)
800 goto fail;
801 os_memcpy(ssid->ssid, ie + 2, ie[1]);
802 ssid->ssid_len = ie[1];
803
804 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
805 goto fail;
806
807 eap_type = EAP_TYPE_SIM;
808 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
809 eap_type = EAP_TYPE_AKA;
810 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
811 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
812 cred->eap_method[0].method == EAP_TYPE_AKA ||
813 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
814 eap_type = cred->eap_method[0].method;
815 }
816
817 switch (eap_type) {
818 case EAP_TYPE_SIM:
819 prefix = '1';
820 res = wpa_config_set(ssid, "eap", "SIM", 0);
821 break;
822 case EAP_TYPE_AKA:
823 prefix = '0';
824 res = wpa_config_set(ssid, "eap", "AKA", 0);
825 break;
826 case EAP_TYPE_AKA_PRIME:
827 prefix = '6';
828 res = wpa_config_set(ssid, "eap", "AKA'", 0);
829 break;
830 default:
831 res = -1;
832 break;
833 }
834 if (res < 0) {
835 wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
836 eap_type);
837 goto fail;
838 }
839
840 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
841 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
842 goto fail;
843 }
844
845 if (cred->milenage && cred->milenage[0]) {
846 if (wpa_config_set_quoted(ssid, "password",
847 cred->milenage) < 0)
848 goto fail;
849 } else if (cred->pcsc) {
850 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
851 goto fail;
852 if (wpa_s->conf->pcsc_pin &&
853 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
854 < 0)
855 goto fail;
856 }
857
858 if (cred->password && cred->password[0] &&
859 wpa_config_set_quoted(ssid, "password", cred->password) < 0)
860 goto fail;
861
862 wpa_config_update_prio_list(wpa_s->conf);
863 interworking_reconnect(wpa_s);
864
865 return 0;
866
867 fail:
868 wpas_notify_network_removed(wpa_s, ssid);
869 wpa_config_remove_network(wpa_s->conf, ssid->id);
870 #endif /* INTERWORKING_3GPP */
871 return -1;
872 }
873
874
875 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
876 size_t rc_len)
877 {
878 const u8 *pos, *end;
879 u8 lens;
880
881 if (ie == NULL)
882 return 0;
883
884 pos = ie + 2;
885 end = ie + 2 + ie[1];
886
887 /* Roaming Consortium element:
888 * Number of ANQP OIs
889 * OI #1 and #2 lengths
890 * OI #1, [OI #2], [OI #3]
891 */
892
893 if (pos + 2 > end)
894 return 0;
895
896 pos++; /* skip Number of ANQP OIs */
897 lens = *pos++;
898 if (pos + (lens & 0x0f) + (lens >> 4) > end)
899 return 0;
900
901 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
902 return 1;
903 pos += lens & 0x0f;
904
905 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
906 return 1;
907 pos += lens >> 4;
908
909 if (pos < end && (size_t) (end - pos) == rc_len &&
910 os_memcmp(pos, rc_id, rc_len) == 0)
911 return 1;
912
913 return 0;
914 }
915
916
917 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
918 const u8 *rc_id, size_t rc_len)
919 {
920 const u8 *pos, *end;
921 u8 len;
922
923 if (anqp == NULL)
924 return 0;
925
926 pos = wpabuf_head(anqp);
927 end = pos + wpabuf_len(anqp);
928
929 /* Set of <OI Length, OI> duples */
930 while (pos < end) {
931 len = *pos++;
932 if (pos + len > end)
933 break;
934 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
935 return 1;
936 pos += len;
937 }
938
939 return 0;
940 }
941
942
943 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
944 const u8 *rc_id, size_t rc_len)
945 {
946 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
947 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
948 }
949
950
951 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
952 {
953 size_t i;
954
955 if (!cred->excluded_ssid)
956 return 0;
957
958 for (i = 0; i < cred->num_excluded_ssid; i++) {
959 struct excluded_ssid *e = &cred->excluded_ssid[i];
960 if (bss->ssid_len == e->ssid_len &&
961 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
962 return 1;
963 }
964
965 return 0;
966 }
967
968
969 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
970 struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
971 {
972 struct wpa_cred *cred, *selected = NULL;
973 const u8 *ie;
974
975 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
976
977 if (ie == NULL &&
978 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
979 return NULL;
980
981 if (wpa_s->conf->cred == NULL)
982 return NULL;
983
984 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
985 if (cred->roaming_consortium_len == 0)
986 continue;
987
988 if (!roaming_consortium_match(ie,
989 bss->anqp ?
990 bss->anqp->roaming_consortium :
991 NULL,
992 cred->roaming_consortium,
993 cred->roaming_consortium_len))
994 continue;
995
996 if (cred_excluded_ssid(cred, bss))
997 continue;
998
999 if (selected == NULL ||
1000 selected->priority < cred->priority)
1001 selected = cred;
1002 }
1003
1004 return selected;
1005 }
1006
1007
1008 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1009 struct wpa_cred *cred, int ttls)
1010 {
1011 if (cred->eap_method) {
1012 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1013 cred->eap_method->method == EAP_TYPE_TTLS;
1014
1015 os_free(ssid->eap.eap_methods);
1016 ssid->eap.eap_methods =
1017 os_malloc(sizeof(struct eap_method_type) * 2);
1018 if (ssid->eap.eap_methods == NULL)
1019 return -1;
1020 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1021 sizeof(*cred->eap_method));
1022 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1023 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1024 }
1025
1026 if (ttls && cred->username && cred->username[0]) {
1027 const char *pos;
1028 char *anon;
1029 /* Use anonymous NAI in Phase 1 */
1030 pos = os_strchr(cred->username, '@');
1031 if (pos) {
1032 size_t buflen = 9 + os_strlen(pos) + 1;
1033 anon = os_malloc(buflen);
1034 if (anon == NULL)
1035 return -1;
1036 os_snprintf(anon, buflen, "anonymous%s", pos);
1037 } else if (cred->realm) {
1038 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1039 anon = os_malloc(buflen);
1040 if (anon == NULL)
1041 return -1;
1042 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1043 } else {
1044 anon = os_strdup("anonymous");
1045 if (anon == NULL)
1046 return -1;
1047 }
1048 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1049 0) {
1050 os_free(anon);
1051 return -1;
1052 }
1053 os_free(anon);
1054 }
1055
1056 if (cred->username && cred->username[0] &&
1057 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1058 return -1;
1059
1060 if (cred->password && cred->password[0]) {
1061 if (cred->ext_password &&
1062 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1063 return -1;
1064 if (!cred->ext_password &&
1065 wpa_config_set_quoted(ssid, "password", cred->password) <
1066 0)
1067 return -1;
1068 }
1069
1070 if (cred->client_cert && cred->client_cert[0] &&
1071 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1072 return -1;
1073
1074 #ifdef ANDROID
1075 if (cred->private_key &&
1076 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1077 /* Use OpenSSL engine configuration for Android keystore */
1078 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1079 wpa_config_set_quoted(ssid, "key_id",
1080 cred->private_key + 11) < 0 ||
1081 wpa_config_set(ssid, "engine", "1", 0) < 0)
1082 return -1;
1083 } else
1084 #endif /* ANDROID */
1085 if (cred->private_key && cred->private_key[0] &&
1086 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1087 return -1;
1088
1089 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1090 wpa_config_set_quoted(ssid, "private_key_passwd",
1091 cred->private_key_passwd) < 0)
1092 return -1;
1093
1094 if (cred->phase1) {
1095 os_free(ssid->eap.phase1);
1096 ssid->eap.phase1 = os_strdup(cred->phase1);
1097 }
1098 if (cred->phase2) {
1099 os_free(ssid->eap.phase2);
1100 ssid->eap.phase2 = os_strdup(cred->phase2);
1101 }
1102
1103 if (cred->ca_cert && cred->ca_cert[0] &&
1104 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1105 return -1;
1106
1107 return 0;
1108 }
1109
1110
1111 static int interworking_connect_roaming_consortium(
1112 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1113 struct wpa_bss *bss, const u8 *ssid_ie)
1114 {
1115 struct wpa_ssid *ssid;
1116
1117 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1118 "roaming consortium match", MAC2STR(bss->bssid));
1119
1120 ssid = wpa_config_add_network(wpa_s->conf);
1121 if (ssid == NULL)
1122 return -1;
1123 ssid->parent_cred = cred;
1124 wpas_notify_network_added(wpa_s, ssid);
1125 wpa_config_set_network_defaults(ssid);
1126 ssid->priority = cred->priority;
1127 ssid->temporary = 1;
1128 ssid->ssid = os_zalloc(ssid_ie[1] + 1);
1129 if (ssid->ssid == NULL)
1130 goto fail;
1131 os_memcpy(ssid->ssid, ssid_ie + 2, ssid_ie[1]);
1132 ssid->ssid_len = ssid_ie[1];
1133
1134 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1135 goto fail;
1136
1137 if (cred->eap_method == NULL) {
1138 wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1139 "credential using roaming consortium");
1140 goto fail;
1141 }
1142
1143 if (interworking_set_eap_params(
1144 ssid, cred,
1145 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1146 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1147 goto fail;
1148
1149 wpa_config_update_prio_list(wpa_s->conf);
1150 interworking_reconnect(wpa_s);
1151
1152 return 0;
1153
1154 fail:
1155 wpas_notify_network_removed(wpa_s, ssid);
1156 wpa_config_remove_network(wpa_s->conf, ssid->id);
1157 return -1;
1158 }
1159
1160
1161 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1162 {
1163 struct wpa_cred *cred;
1164 struct wpa_ssid *ssid;
1165 struct nai_realm *realm;
1166 struct nai_realm_eap *eap = NULL;
1167 u16 count, i;
1168 char buf[100];
1169 const u8 *ie;
1170
1171 if (wpa_s->conf->cred == NULL || bss == NULL)
1172 return -1;
1173 ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1174 if (ie == NULL || ie[1] == 0) {
1175 wpa_printf(MSG_DEBUG, "Interworking: No SSID known for "
1176 MACSTR, MAC2STR(bss->bssid));
1177 return -1;
1178 }
1179
1180 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1181 /*
1182 * We currently support only HS 2.0 networks and those are
1183 * required to use WPA2-Enterprise.
1184 */
1185 wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1186 "RSN");
1187 return -1;
1188 }
1189
1190 cred = interworking_credentials_available_roaming_consortium(wpa_s,
1191 bss);
1192 if (cred)
1193 return interworking_connect_roaming_consortium(wpa_s, cred,
1194 bss, ie);
1195
1196 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1197 &count);
1198 if (realm == NULL) {
1199 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1200 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1201 count = 0;
1202 }
1203
1204 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1205 for (i = 0; i < count; i++) {
1206 if (!nai_realm_match(&realm[i], cred->realm))
1207 continue;
1208 eap = nai_realm_find_eap(cred, &realm[i]);
1209 if (eap)
1210 break;
1211 }
1212 if (eap)
1213 break;
1214 }
1215
1216 if (!eap) {
1217 if (interworking_connect_3gpp(wpa_s, bss) == 0) {
1218 if (realm)
1219 nai_realm_free(realm, count);
1220 return 0;
1221 }
1222
1223 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1224 "and EAP method found for " MACSTR,
1225 MAC2STR(bss->bssid));
1226 nai_realm_free(realm, count);
1227 return -1;
1228 }
1229
1230 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1231 MAC2STR(bss->bssid));
1232
1233 ssid = wpa_config_add_network(wpa_s->conf);
1234 if (ssid == NULL) {
1235 nai_realm_free(realm, count);
1236 return -1;
1237 }
1238 ssid->parent_cred = cred;
1239 wpas_notify_network_added(wpa_s, ssid);
1240 wpa_config_set_network_defaults(ssid);
1241 ssid->priority = cred->priority;
1242 ssid->temporary = 1;
1243 ssid->ssid = os_zalloc(ie[1] + 1);
1244 if (ssid->ssid == NULL)
1245 goto fail;
1246 os_memcpy(ssid->ssid, ie + 2, ie[1]);
1247 ssid->ssid_len = ie[1];
1248
1249 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1250 goto fail;
1251
1252 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1253 eap->method), 0) < 0)
1254 goto fail;
1255
1256 switch (eap->method) {
1257 case EAP_TYPE_TTLS:
1258 if (eap->inner_method) {
1259 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1260 eap_get_name(EAP_VENDOR_IETF,
1261 eap->inner_method));
1262 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1263 goto fail;
1264 break;
1265 }
1266 switch (eap->inner_non_eap) {
1267 case NAI_REALM_INNER_NON_EAP_PAP:
1268 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1269 0)
1270 goto fail;
1271 break;
1272 case NAI_REALM_INNER_NON_EAP_CHAP:
1273 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1274 < 0)
1275 goto fail;
1276 break;
1277 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1278 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1279 0) < 0)
1280 goto fail;
1281 break;
1282 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1283 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1284 0) < 0)
1285 goto fail;
1286 break;
1287 default:
1288 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1289 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1290 0) < 0)
1291 goto fail;
1292 break;
1293 }
1294 break;
1295 case EAP_TYPE_PEAP:
1296 os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
1297 eap_get_name(EAP_VENDOR_IETF, eap->inner_method));
1298 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1299 goto fail;
1300 break;
1301 case EAP_TYPE_TLS:
1302 break;
1303 }
1304
1305 if (interworking_set_eap_params(ssid, cred,
1306 eap->method == EAP_TYPE_TTLS) < 0)
1307 goto fail;
1308
1309 nai_realm_free(realm, count);
1310
1311 wpa_config_update_prio_list(wpa_s->conf);
1312 interworking_reconnect(wpa_s);
1313
1314 return 0;
1315
1316 fail:
1317 wpas_notify_network_removed(wpa_s, ssid);
1318 wpa_config_remove_network(wpa_s->conf, ssid->id);
1319 nai_realm_free(realm, count);
1320 return -1;
1321 }
1322
1323
1324 static struct wpa_cred * interworking_credentials_available_3gpp(
1325 struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1326 {
1327 struct wpa_cred *cred, *selected = NULL;
1328 int ret;
1329
1330 #ifdef INTERWORKING_3GPP
1331 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1332 return NULL;
1333
1334 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1335 char *sep;
1336 const char *imsi;
1337 int mnc_len;
1338
1339 #ifdef PCSC_FUNCS
1340 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
1341 wpa_s->imsi[0]) {
1342 imsi = wpa_s->imsi;
1343 mnc_len = wpa_s->mnc_len;
1344 goto compare;
1345 }
1346 #endif /* PCSC_FUNCS */
1347
1348 if (cred->imsi == NULL || !cred->imsi[0] ||
1349 cred->milenage == NULL || !cred->milenage[0])
1350 continue;
1351
1352 sep = os_strchr(cred->imsi, '-');
1353 if (sep == NULL ||
1354 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1355 continue;
1356 mnc_len = sep - cred->imsi - 3;
1357 imsi = cred->imsi;
1358
1359 #ifdef PCSC_FUNCS
1360 compare:
1361 #endif /* PCSC_FUNCS */
1362 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1363 MACSTR, MAC2STR(bss->bssid));
1364 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1365 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1366 if (ret) {
1367 if (cred_excluded_ssid(cred, bss))
1368 continue;
1369 if (selected == NULL ||
1370 selected->priority < cred->priority)
1371 selected = cred;
1372 }
1373 }
1374 #endif /* INTERWORKING_3GPP */
1375 return selected;
1376 }
1377
1378
1379 static struct wpa_cred * interworking_credentials_available_realm(
1380 struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1381 {
1382 struct wpa_cred *cred, *selected = NULL;
1383 struct nai_realm *realm;
1384 u16 count, i;
1385
1386 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1387 return NULL;
1388
1389 if (wpa_s->conf->cred == NULL)
1390 return NULL;
1391
1392 wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1393 MACSTR, MAC2STR(bss->bssid));
1394 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1395 if (realm == NULL) {
1396 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1397 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1398 return NULL;
1399 }
1400
1401 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1402 if (cred->realm == NULL)
1403 continue;
1404
1405 for (i = 0; i < count; i++) {
1406 if (!nai_realm_match(&realm[i], cred->realm))
1407 continue;
1408 if (nai_realm_find_eap(cred, &realm[i])) {
1409 if (cred_excluded_ssid(cred, bss))
1410 continue;
1411 if (selected == NULL ||
1412 selected->priority < cred->priority)
1413 selected = cred;
1414 break;
1415 }
1416 }
1417 }
1418
1419 nai_realm_free(realm, count);
1420
1421 return selected;
1422 }
1423
1424
1425 static struct wpa_cred * interworking_credentials_available(
1426 struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1427 {
1428 struct wpa_cred *cred, *cred2;
1429
1430 cred = interworking_credentials_available_realm(wpa_s, bss);
1431 cred2 = interworking_credentials_available_3gpp(wpa_s, bss);
1432 if (cred && cred2 && cred2->priority >= cred->priority)
1433 cred = cred2;
1434 if (!cred)
1435 cred = cred2;
1436
1437 cred2 = interworking_credentials_available_roaming_consortium(wpa_s,
1438 bss);
1439 if (cred && cred2 && cred2->priority >= cred->priority)
1440 cred = cred2;
1441 if (!cred)
1442 cred = cred2;
1443
1444 return cred;
1445 }
1446
1447
1448 static int domain_name_list_contains(struct wpabuf *domain_names,
1449 const char *domain)
1450 {
1451 const u8 *pos, *end;
1452 size_t len;
1453
1454 len = os_strlen(domain);
1455 pos = wpabuf_head(domain_names);
1456 end = pos + wpabuf_len(domain_names);
1457
1458 while (pos + 1 < end) {
1459 if (pos + 1 + pos[0] > end)
1460 break;
1461
1462 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
1463 pos + 1, pos[0]);
1464 if (pos[0] == len &&
1465 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
1466 return 1;
1467
1468 pos += 1 + pos[0];
1469 }
1470
1471 return 0;
1472 }
1473
1474
1475 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
1476 struct wpa_cred *cred,
1477 struct wpabuf *domain_names)
1478 {
1479 #ifdef INTERWORKING_3GPP
1480 char nai[100], *realm;
1481
1482 char *imsi = NULL;
1483 int mnc_len = 0;
1484 if (cred->imsi)
1485 imsi = cred->imsi;
1486 #ifdef CONFIG_PCSC
1487 else if (cred->pcsc && wpa_s->conf->pcsc_reader &&
1488 wpa_s->scard && wpa_s->imsi[0]) {
1489 imsi = wpa_s->imsi;
1490 mnc_len = wpa_s->mnc_len;
1491 }
1492 #endif /* CONFIG_PCSC */
1493 if (domain_names &&
1494 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
1495 realm = os_strchr(nai, '@');
1496 if (realm)
1497 realm++;
1498 wpa_printf(MSG_DEBUG, "Interworking: Search for match "
1499 "with SIM/USIM domain %s", realm);
1500 if (realm &&
1501 domain_name_list_contains(domain_names, realm))
1502 return 1;
1503 }
1504 #endif /* INTERWORKING_3GPP */
1505
1506 if (domain_names == NULL || cred->domain == NULL)
1507 return 0;
1508
1509 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
1510 "home SP FQDN %s", cred->domain);
1511 if (domain_name_list_contains(domain_names, cred->domain))
1512 return 1;
1513
1514 return 0;
1515 }
1516
1517
1518 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
1519 struct wpabuf *domain_names)
1520 {
1521 struct wpa_cred *cred;
1522
1523 if (domain_names == NULL || wpa_s->conf->cred == NULL)
1524 return -1;
1525
1526 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1527 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
1528 if (res)
1529 return res;
1530 }
1531
1532 return 0;
1533 }
1534
1535
1536 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
1537 {
1538 struct wpa_bss *bss;
1539 struct wpa_ssid *ssid;
1540
1541 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1542 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1543 if (wpas_network_disabled(wpa_s, ssid) ||
1544 ssid->mode != WPAS_MODE_INFRA)
1545 continue;
1546 if (ssid->ssid_len != bss->ssid_len ||
1547 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
1548 0)
1549 continue;
1550 /*
1551 * TODO: Consider more accurate matching of security
1552 * configuration similarly to what is done in events.c
1553 */
1554 return 1;
1555 }
1556 }
1557
1558 return 0;
1559 }
1560
1561
1562 static void interworking_select_network(struct wpa_supplicant *wpa_s)
1563 {
1564 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
1565 int selected_prio = -999999, selected_home_prio = -999999;
1566 unsigned int count = 0;
1567 const char *type;
1568 int res;
1569 struct wpa_cred *cred;
1570
1571 wpa_s->network_select = 0;
1572
1573 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1574 cred = interworking_credentials_available(wpa_s, bss);
1575 if (!cred)
1576 continue;
1577 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1578 /*
1579 * We currently support only HS 2.0 networks and those
1580 * are required to use WPA2-Enterprise.
1581 */
1582 wpa_printf(MSG_DEBUG, "Interworking: Credential match "
1583 "with " MACSTR " but network does not use "
1584 "RSN", MAC2STR(bss->bssid));
1585 continue;
1586 }
1587 count++;
1588 res = interworking_home_sp(wpa_s, bss->anqp ?
1589 bss->anqp->domain_name : NULL);
1590 if (res > 0)
1591 type = "home";
1592 else if (res == 0)
1593 type = "roaming";
1594 else
1595 type = "unknown";
1596 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_AP MACSTR " type=%s",
1597 MAC2STR(bss->bssid), type);
1598 if (wpa_s->auto_select ||
1599 (wpa_s->conf->auto_interworking &&
1600 wpa_s->auto_network_select)) {
1601 if (selected == NULL ||
1602 cred->priority > selected_prio) {
1603 selected = bss;
1604 selected_prio = cred->priority;
1605 }
1606 if (res > 0 &&
1607 (selected_home == NULL ||
1608 cred->priority > selected_home_prio)) {
1609 selected_home = bss;
1610 selected_home_prio = cred->priority;
1611 }
1612 }
1613 }
1614
1615 if (selected_home && selected_home != selected &&
1616 selected_home_prio >= selected_prio) {
1617 /* Prefer network operated by the Home SP */
1618 selected = selected_home;
1619 }
1620
1621 if (count == 0) {
1622 /*
1623 * No matching network was found based on configured
1624 * credentials. Check whether any of the enabled network blocks
1625 * have matching APs.
1626 */
1627 if (interworking_find_network_match(wpa_s)) {
1628 wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
1629 "match for enabled network configurations");
1630 if (wpa_s->auto_select)
1631 interworking_reconnect(wpa_s);
1632 return;
1633 }
1634
1635 if (wpa_s->auto_network_select) {
1636 wpa_printf(MSG_DEBUG, "Interworking: Continue "
1637 "scanning after ANQP fetch");
1638 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
1639 0);
1640 return;
1641 }
1642
1643 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
1644 "with matching credentials found");
1645 }
1646
1647 if (selected)
1648 interworking_connect(wpa_s, selected);
1649 }
1650
1651
1652 static struct wpa_bss_anqp *
1653 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1654 {
1655 struct wpa_bss *other;
1656
1657 if (is_zero_ether_addr(bss->hessid))
1658 return NULL; /* Cannot be in the same homegenous ESS */
1659
1660 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
1661 if (other == bss)
1662 continue;
1663 if (other->anqp == NULL)
1664 continue;
1665 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
1666 continue;
1667 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
1668 continue;
1669 if (bss->ssid_len != other->ssid_len ||
1670 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
1671 continue;
1672
1673 wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
1674 "already fetched BSSID " MACSTR " and " MACSTR,
1675 MAC2STR(other->bssid), MAC2STR(bss->bssid));
1676 other->anqp->users++;
1677 return other->anqp;
1678 }
1679
1680 return NULL;
1681 }
1682
1683
1684 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
1685 {
1686 struct wpa_bss *bss;
1687 int found = 0;
1688 const u8 *ie;
1689
1690 if (!wpa_s->fetch_anqp_in_progress)
1691 return;
1692
1693 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1694 if (!(bss->caps & IEEE80211_CAP_ESS))
1695 continue;
1696 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
1697 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
1698 continue; /* AP does not support Interworking */
1699
1700 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
1701 if (bss->anqp == NULL) {
1702 bss->anqp = interworking_match_anqp_info(wpa_s,
1703 bss);
1704 if (bss->anqp) {
1705 /* Shared data already fetched */
1706 continue;
1707 }
1708 bss->anqp = wpa_bss_anqp_alloc();
1709 if (bss->anqp == NULL)
1710 break;
1711 }
1712 found++;
1713 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
1714 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
1715 MACSTR, MAC2STR(bss->bssid));
1716 interworking_anqp_send_req(wpa_s, bss);
1717 break;
1718 }
1719 }
1720
1721 if (found == 0) {
1722 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
1723 wpa_s->fetch_anqp_in_progress = 0;
1724 if (wpa_s->network_select)
1725 interworking_select_network(wpa_s);
1726 }
1727 }
1728
1729
1730 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
1731 {
1732 struct wpa_bss *bss;
1733
1734 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
1735 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
1736
1737 wpa_s->fetch_anqp_in_progress = 1;
1738 interworking_next_anqp_fetch(wpa_s);
1739 }
1740
1741
1742 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
1743 {
1744 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
1745 return 0;
1746
1747 wpa_s->network_select = 0;
1748 wpa_s->fetch_all_anqp = 1;
1749
1750 interworking_start_fetch_anqp(wpa_s);
1751
1752 return 0;
1753 }
1754
1755
1756 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
1757 {
1758 if (!wpa_s->fetch_anqp_in_progress)
1759 return;
1760
1761 wpa_s->fetch_anqp_in_progress = 0;
1762 }
1763
1764
1765 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
1766 u16 info_ids[], size_t num_ids)
1767 {
1768 struct wpabuf *buf;
1769 int ret = 0;
1770 int freq;
1771 struct wpa_bss *bss;
1772 int res;
1773
1774 freq = wpa_s->assoc_freq;
1775 bss = wpa_bss_get_bssid(wpa_s, dst);
1776 if (bss) {
1777 wpa_bss_anqp_unshare_alloc(bss);
1778 freq = bss->freq;
1779 }
1780 if (freq <= 0)
1781 return -1;
1782
1783 wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
1784 MAC2STR(dst), (unsigned int) num_ids);
1785
1786 buf = anqp_build_req(info_ids, num_ids, NULL);
1787 if (buf == NULL)
1788 return -1;
1789
1790 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
1791 if (res < 0) {
1792 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
1793 ret = -1;
1794 } else
1795 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
1796 "%u", res);
1797
1798 wpabuf_free(buf);
1799 return ret;
1800 }
1801
1802
1803 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
1804 const u8 *sa, u16 info_id,
1805 const u8 *data, size_t slen)
1806 {
1807 const u8 *pos = data;
1808 struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
1809 struct wpa_bss_anqp *anqp = NULL;
1810 #ifdef CONFIG_HS20
1811 u8 type;
1812 #endif /* CONFIG_HS20 */
1813
1814 if (bss)
1815 anqp = bss->anqp;
1816
1817 switch (info_id) {
1818 case ANQP_CAPABILITY_LIST:
1819 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1820 " ANQP Capability list", MAC2STR(sa));
1821 break;
1822 case ANQP_VENUE_NAME:
1823 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1824 " Venue Name", MAC2STR(sa));
1825 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
1826 if (anqp) {
1827 wpabuf_free(anqp->venue_name);
1828 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
1829 }
1830 break;
1831 case ANQP_NETWORK_AUTH_TYPE:
1832 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1833 " Network Authentication Type information",
1834 MAC2STR(sa));
1835 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
1836 "Type", pos, slen);
1837 if (anqp) {
1838 wpabuf_free(anqp->network_auth_type);
1839 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
1840 }
1841 break;
1842 case ANQP_ROAMING_CONSORTIUM:
1843 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1844 " Roaming Consortium list", MAC2STR(sa));
1845 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
1846 pos, slen);
1847 if (anqp) {
1848 wpabuf_free(anqp->roaming_consortium);
1849 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
1850 }
1851 break;
1852 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
1853 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1854 " IP Address Type Availability information",
1855 MAC2STR(sa));
1856 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
1857 pos, slen);
1858 if (anqp) {
1859 wpabuf_free(anqp->ip_addr_type_availability);
1860 anqp->ip_addr_type_availability =
1861 wpabuf_alloc_copy(pos, slen);
1862 }
1863 break;
1864 case ANQP_NAI_REALM:
1865 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1866 " NAI Realm list", MAC2STR(sa));
1867 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
1868 if (anqp) {
1869 wpabuf_free(anqp->nai_realm);
1870 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
1871 }
1872 break;
1873 case ANQP_3GPP_CELLULAR_NETWORK:
1874 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1875 " 3GPP Cellular Network information", MAC2STR(sa));
1876 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
1877 pos, slen);
1878 if (anqp) {
1879 wpabuf_free(anqp->anqp_3gpp);
1880 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
1881 }
1882 break;
1883 case ANQP_DOMAIN_NAME:
1884 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1885 " Domain Name list", MAC2STR(sa));
1886 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
1887 if (anqp) {
1888 wpabuf_free(anqp->domain_name);
1889 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
1890 }
1891 break;
1892 case ANQP_VENDOR_SPECIFIC:
1893 if (slen < 3)
1894 return;
1895
1896 switch (WPA_GET_BE24(pos)) {
1897 #ifdef CONFIG_HS20
1898 case OUI_WFA:
1899 pos += 3;
1900 slen -= 3;
1901
1902 if (slen < 1)
1903 return;
1904 type = *pos++;
1905 slen--;
1906
1907 switch (type) {
1908 case HS20_ANQP_OUI_TYPE:
1909 hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
1910 slen);
1911 break;
1912 default:
1913 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
1914 "vendor type %u", type);
1915 break;
1916 }
1917 break;
1918 #endif /* CONFIG_HS20 */
1919 default:
1920 wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
1921 "vendor-specific ANQP OUI %06x",
1922 WPA_GET_BE24(pos));
1923 return;
1924 }
1925 break;
1926 default:
1927 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
1928 "%u", info_id);
1929 break;
1930 }
1931 }
1932
1933
1934 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
1935 enum gas_query_result result,
1936 const struct wpabuf *adv_proto,
1937 const struct wpabuf *resp, u16 status_code)
1938 {
1939 struct wpa_supplicant *wpa_s = ctx;
1940 const u8 *pos;
1941 const u8 *end;
1942 u16 info_id;
1943 u16 slen;
1944
1945 if (result != GAS_QUERY_SUCCESS)
1946 return;
1947
1948 pos = wpabuf_head(adv_proto);
1949 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
1950 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
1951 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
1952 "Protocol in response");
1953 return;
1954 }
1955
1956 pos = wpabuf_head(resp);
1957 end = pos + wpabuf_len(resp);
1958
1959 while (pos < end) {
1960 if (pos + 4 > end) {
1961 wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
1962 break;
1963 }
1964 info_id = WPA_GET_LE16(pos);
1965 pos += 2;
1966 slen = WPA_GET_LE16(pos);
1967 pos += 2;
1968 if (pos + slen > end) {
1969 wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
1970 "for Info ID %u", info_id);
1971 break;
1972 }
1973 interworking_parse_rx_anqp_resp(wpa_s, dst, info_id, pos,
1974 slen);
1975 pos += slen;
1976 }
1977 }
1978
1979
1980 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
1981 struct wpa_scan_results *scan_res)
1982 {
1983 wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
1984 "ANQP fetch");
1985 interworking_start_fetch_anqp(wpa_s);
1986 }
1987
1988
1989 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select)
1990 {
1991 interworking_stop_fetch_anqp(wpa_s);
1992 wpa_s->network_select = 1;
1993 wpa_s->auto_network_select = 0;
1994 wpa_s->auto_select = !!auto_select;
1995 wpa_s->fetch_all_anqp = 0;
1996 wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
1997 "selection");
1998 wpa_s->scan_res_handler = interworking_scan_res_handler;
1999 wpa_s->scan_req = MANUAL_SCAN_REQ;
2000 wpa_supplicant_req_scan(wpa_s, 0, 0);
2001
2002 return 0;
2003 }
2004
2005
2006 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2007 enum gas_query_result result,
2008 const struct wpabuf *adv_proto,
2009 const struct wpabuf *resp, u16 status_code)
2010 {
2011 struct wpa_supplicant *wpa_s = ctx;
2012
2013 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2014 " dialog_token=%d status_code=%d resp_len=%d",
2015 MAC2STR(addr), dialog_token, status_code,
2016 resp ? (int) wpabuf_len(resp) : -1);
2017 if (!resp)
2018 return;
2019
2020 wpabuf_free(wpa_s->last_gas_resp);
2021 wpa_s->last_gas_resp = wpabuf_dup(resp);
2022 if (wpa_s->last_gas_resp == NULL)
2023 return;
2024 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2025 wpa_s->last_gas_dialog_token = dialog_token;
2026 }
2027
2028
2029 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2030 const struct wpabuf *adv_proto,
2031 const struct wpabuf *query)
2032 {
2033 struct wpabuf *buf;
2034 int ret = 0;
2035 int freq;
2036 struct wpa_bss *bss;
2037 int res;
2038 size_t len;
2039 u8 query_resp_len_limit = 0, pame_bi = 0;
2040
2041 freq = wpa_s->assoc_freq;
2042 bss = wpa_bss_get_bssid(wpa_s, dst);
2043 if (bss)
2044 freq = bss->freq;
2045 if (freq <= 0)
2046 return -1;
2047
2048 wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2049 MAC2STR(dst), freq);
2050 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2051 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2052
2053 len = 3 + wpabuf_len(adv_proto) + 2;
2054 if (query)
2055 len += wpabuf_len(query);
2056 buf = gas_build_initial_req(0, len);
2057 if (buf == NULL)
2058 return -1;
2059
2060 /* Advertisement Protocol IE */
2061 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2062 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2063 wpabuf_put_u8(buf, (query_resp_len_limit & 0x7f) |
2064 (pame_bi ? 0x80 : 0));
2065 wpabuf_put_buf(buf, adv_proto);
2066
2067 /* GAS Query */
2068 if (query) {
2069 wpabuf_put_le16(buf, wpabuf_len(query));
2070 wpabuf_put_buf(buf, query);
2071 } else
2072 wpabuf_put_le16(buf, 0);
2073
2074 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2075 if (res < 0) {
2076 wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2077 ret = -1;
2078 } else
2079 wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "
2080 "%u", res);
2081
2082 wpabuf_free(buf);
2083 return ret;
2084 }
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