Line data Source code
1 : /*
2 : * Interworking (IEEE 802.11u)
3 : * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 : * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
5 : *
6 : * This software may be distributed under the terms of the BSD license.
7 : * See README for more details.
8 : */
9 :
10 : #include "includes.h"
11 :
12 : #include "common.h"
13 : #include "common/ieee802_11_defs.h"
14 : #include "common/gas.h"
15 : #include "common/wpa_ctrl.h"
16 : #include "utils/pcsc_funcs.h"
17 : #include "utils/eloop.h"
18 : #include "drivers/driver.h"
19 : #include "eap_common/eap_defs.h"
20 : #include "eap_peer/eap.h"
21 : #include "eap_peer/eap_methods.h"
22 : #include "eapol_supp/eapol_supp_sm.h"
23 : #include "rsn_supp/wpa.h"
24 : #include "wpa_supplicant_i.h"
25 : #include "config.h"
26 : #include "config_ssid.h"
27 : #include "bss.h"
28 : #include "scan.h"
29 : #include "notify.h"
30 : #include "driver_i.h"
31 : #include "gas_query.h"
32 : #include "hs20_supplicant.h"
33 : #include "interworking.h"
34 :
35 :
36 : #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
37 : #define INTERWORKING_3GPP
38 : #else
39 : #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
40 : #define INTERWORKING_3GPP
41 : #else
42 : #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
43 : #define INTERWORKING_3GPP
44 : #endif
45 : #endif
46 : #endif
47 :
48 : static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
49 : static struct wpa_cred * interworking_credentials_available_realm(
50 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
51 : int *excluded);
52 : static struct wpa_cred * interworking_credentials_available_3gpp(
53 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
54 : int *excluded);
55 :
56 :
57 33 : static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 : {
59 33 : if (a->priority > b->priority)
60 4 : return 1;
61 29 : if (a->priority < b->priority)
62 3 : return -1;
63 32 : if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 6 : os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 20 : return 0;
66 6 : if (a->sp_priority < b->sp_priority)
67 3 : return 1;
68 3 : if (a->sp_priority > b->sp_priority)
69 3 : return -1;
70 0 : return 0;
71 : }
72 :
73 :
74 81 : static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 : {
76 81 : if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
77 4 : wpa_supplicant_cancel_sched_scan(wpa_s);
78 4 : wpa_supplicant_deauthenticate(wpa_s,
79 : WLAN_REASON_DEAUTH_LEAVING);
80 : }
81 81 : wpa_s->disconnected = 0;
82 81 : wpa_s->reassociate = 1;
83 :
84 81 : if (wpa_supplicant_fast_associate(wpa_s) >= 0)
85 162 : return;
86 :
87 0 : wpa_supplicant_req_scan(wpa_s, 0, 0);
88 : }
89 :
90 :
91 174 : static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
92 : struct wpabuf *extra)
93 : {
94 : struct wpabuf *buf;
95 : size_t i;
96 : u8 *len_pos;
97 :
98 348 : buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
99 174 : (extra ? wpabuf_len(extra) : 0));
100 174 : if (buf == NULL)
101 0 : return NULL;
102 :
103 174 : len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
104 669 : for (i = 0; i < num_ids; i++)
105 495 : wpabuf_put_le16(buf, info_ids[i]);
106 174 : gas_anqp_set_element_len(buf, len_pos);
107 174 : if (extra)
108 156 : wpabuf_put_buf(buf, extra);
109 :
110 174 : gas_anqp_set_len(buf);
111 :
112 174 : return buf;
113 : }
114 :
115 :
116 155 : static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
117 : u8 dialog_token,
118 : enum gas_query_result result,
119 : const struct wpabuf *adv_proto,
120 : const struct wpabuf *resp,
121 : u16 status_code)
122 : {
123 155 : struct wpa_supplicant *wpa_s = ctx;
124 :
125 1085 : wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
126 : " dialog_token=%u result=%d status_code=%u",
127 930 : MAC2STR(dst), dialog_token, result, status_code);
128 155 : anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
129 : status_code);
130 155 : interworking_next_anqp_fetch(wpa_s);
131 155 : }
132 :
133 :
134 147 : static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
135 : {
136 : struct wpa_cred *cred;
137 :
138 294 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
139 161 : if (cred->roaming_consortium_len)
140 10 : return 1;
141 151 : if (cred->required_roaming_consortium_len)
142 4 : return 1;
143 : }
144 133 : return 0;
145 : }
146 :
147 :
148 147 : static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
149 : {
150 : struct wpa_cred *cred;
151 :
152 284 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
153 155 : if (cred->pcsc || cred->imsi)
154 18 : return 1;
155 : }
156 129 : return 0;
157 : }
158 :
159 :
160 147 : static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
161 : {
162 : struct wpa_cred *cred;
163 :
164 171 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
165 153 : if (cred->pcsc || cred->imsi)
166 14 : continue;
167 139 : if (!cred->eap_method)
168 129 : return 1;
169 10 : if (cred->realm && cred->roaming_consortium_len == 0)
170 0 : return 1;
171 : }
172 18 : return 0;
173 : }
174 :
175 :
176 147 : static int cred_with_domain(struct wpa_supplicant *wpa_s)
177 : {
178 : struct wpa_cred *cred;
179 :
180 195 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
181 223 : if (cred->domain || cred->pcsc || cred->imsi ||
182 68 : cred->roaming_partner)
183 107 : return 1;
184 : }
185 40 : return 0;
186 : }
187 :
188 :
189 : #ifdef CONFIG_HS20
190 :
191 147 : static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
192 : {
193 : struct wpa_cred *cred;
194 :
195 289 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
196 314 : if (cred->min_dl_bandwidth_home ||
197 306 : cred->min_ul_bandwidth_home ||
198 295 : cred->min_dl_bandwidth_roaming ||
199 142 : cred->min_ul_bandwidth_roaming)
200 19 : return 1;
201 : }
202 128 : return 0;
203 : }
204 :
205 :
206 147 : static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
207 : {
208 : struct wpa_cred *cred;
209 :
210 297 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
211 161 : if (cred->num_req_conn_capab)
212 11 : return 1;
213 : }
214 136 : return 0;
215 : }
216 :
217 : #endif /* CONFIG_HS20 */
218 :
219 :
220 14 : static int additional_roaming_consortiums(struct wpa_bss *bss)
221 : {
222 : const u8 *ie;
223 14 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
224 14 : if (ie == NULL || ie[1] == 0)
225 0 : return 0;
226 14 : return ie[2]; /* Number of ANQP OIs */
227 : }
228 :
229 :
230 0 : static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
231 : {
232 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
233 0 : interworking_next_anqp_fetch(wpa_s);
234 0 : }
235 :
236 :
237 155 : static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
238 : struct wpa_bss *bss)
239 : {
240 : struct wpabuf *buf;
241 155 : int ret = 0;
242 : int res;
243 : u16 info_ids[8];
244 155 : size_t num_info_ids = 0;
245 155 : struct wpabuf *extra = NULL;
246 155 : int all = wpa_s->fetch_all_anqp;
247 :
248 930 : wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
249 930 : MAC2STR(bss->bssid));
250 155 : wpa_s->interworking_gas_bss = bss;
251 :
252 155 : info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
253 155 : if (all) {
254 8 : info_ids[num_info_ids++] = ANQP_VENUE_NAME;
255 8 : info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
256 : }
257 169 : if (all || (cred_with_roaming_consortium(wpa_s) &&
258 14 : additional_roaming_consortiums(bss)))
259 18 : info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
260 155 : if (all)
261 8 : info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
262 155 : if (all || cred_with_nai_realm(wpa_s))
263 137 : info_ids[num_info_ids++] = ANQP_NAI_REALM;
264 155 : if (all || cred_with_3gpp(wpa_s)) {
265 26 : info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
266 26 : wpa_supplicant_scard_init(wpa_s, NULL);
267 : }
268 155 : if (all || cred_with_domain(wpa_s))
269 115 : info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
270 155 : wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
271 : (u8 *) info_ids, num_info_ids * 2);
272 :
273 : #ifdef CONFIG_HS20
274 155 : if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
275 : u8 *len_pos;
276 :
277 155 : extra = wpabuf_alloc(100);
278 155 : if (!extra)
279 0 : return -1;
280 :
281 155 : len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
282 155 : wpabuf_put_be24(extra, OUI_WFA);
283 155 : wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
284 155 : wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
285 155 : wpabuf_put_u8(extra, 0); /* Reserved */
286 155 : wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
287 155 : if (all)
288 8 : wpabuf_put_u8(extra,
289 : HS20_STYPE_OPERATOR_FRIENDLY_NAME);
290 155 : if (all || cred_with_min_backhaul(wpa_s))
291 27 : wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
292 155 : if (all || cred_with_conn_capab(wpa_s))
293 19 : wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
294 155 : if (all)
295 8 : wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
296 155 : if (all)
297 8 : wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
298 155 : gas_anqp_set_element_len(extra, len_pos);
299 : }
300 : #endif /* CONFIG_HS20 */
301 :
302 155 : buf = anqp_build_req(info_ids, num_info_ids, extra);
303 155 : wpabuf_free(extra);
304 155 : if (buf == NULL)
305 0 : return -1;
306 :
307 155 : res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
308 : interworking_anqp_resp_cb, wpa_s);
309 155 : if (res < 0) {
310 0 : wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
311 0 : wpabuf_free(buf);
312 0 : ret = -1;
313 0 : eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
314 : NULL);
315 : } else
316 155 : wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
317 : "%u", res);
318 :
319 155 : return ret;
320 : }
321 :
322 :
323 : struct nai_realm_eap {
324 : u8 method;
325 : u8 inner_method;
326 : enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
327 : u8 cred_type;
328 : u8 tunneled_cred_type;
329 : };
330 :
331 : struct nai_realm {
332 : u8 encoding;
333 : char *realm;
334 : u8 eap_count;
335 : struct nai_realm_eap *eap;
336 : };
337 :
338 :
339 354 : static void nai_realm_free(struct nai_realm *realms, u16 count)
340 : {
341 : u16 i;
342 :
343 354 : if (realms == NULL)
344 354 : return;
345 995 : for (i = 0; i < count; i++) {
346 641 : os_free(realms[i].eap);
347 641 : os_free(realms[i].realm);
348 : }
349 354 : os_free(realms);
350 : }
351 :
352 :
353 648 : static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
354 : const u8 *end)
355 : {
356 : u8 elen, auth_count, a;
357 : const u8 *e_end;
358 :
359 648 : if (pos + 3 > end) {
360 0 : wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
361 0 : return NULL;
362 : }
363 :
364 648 : elen = *pos++;
365 648 : if (pos + elen > end || elen < 2) {
366 0 : wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
367 0 : return NULL;
368 : }
369 648 : e_end = pos + elen;
370 648 : e->method = *pos++;
371 648 : auth_count = *pos++;
372 1296 : wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
373 648 : elen, e->method, auth_count);
374 :
375 1593 : for (a = 0; a < auth_count; a++) {
376 : u8 id, len;
377 :
378 945 : if (pos + 2 > end || pos + 2 + pos[1] > end) {
379 0 : wpa_printf(MSG_DEBUG, "No room for Authentication "
380 : "Parameter subfield");
381 0 : return NULL;
382 : }
383 :
384 945 : id = *pos++;
385 945 : len = *pos++;
386 :
387 945 : switch (id) {
388 : case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
389 317 : if (len < 1)
390 0 : break;
391 317 : e->inner_non_eap = *pos;
392 317 : if (e->method != EAP_TYPE_TTLS)
393 0 : break;
394 317 : switch (*pos) {
395 : case NAI_REALM_INNER_NON_EAP_PAP:
396 3 : wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
397 3 : break;
398 : case NAI_REALM_INNER_NON_EAP_CHAP:
399 3 : wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
400 3 : break;
401 : case NAI_REALM_INNER_NON_EAP_MSCHAP:
402 3 : wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
403 3 : break;
404 : case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
405 306 : wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
406 306 : break;
407 : }
408 317 : break;
409 : case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
410 27 : if (len < 1)
411 0 : break;
412 27 : e->inner_method = *pos;
413 27 : wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
414 27 : e->inner_method);
415 27 : break;
416 : case NAI_REALM_EAP_AUTH_CRED_TYPE:
417 595 : if (len < 1)
418 0 : break;
419 595 : e->cred_type = *pos;
420 595 : wpa_printf(MSG_DEBUG, "Credential Type: %u",
421 595 : e->cred_type);
422 595 : break;
423 : case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
424 3 : if (len < 1)
425 0 : break;
426 3 : e->tunneled_cred_type = *pos;
427 3 : wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
428 3 : "Type: %u", e->tunneled_cred_type);
429 3 : break;
430 : default:
431 3 : wpa_printf(MSG_DEBUG, "Unsupported Authentication "
432 : "Parameter: id=%u len=%u", id, len);
433 3 : wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
434 : "Value", pos, len);
435 3 : break;
436 : }
437 :
438 945 : pos += len;
439 : }
440 :
441 648 : return e_end;
442 : }
443 :
444 :
445 641 : static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
446 : const u8 *end)
447 : {
448 : u16 len;
449 : const u8 *f_end;
450 : u8 realm_len, e;
451 :
452 641 : if (end - pos < 4) {
453 0 : wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
454 : "fixed fields");
455 0 : return NULL;
456 : }
457 :
458 641 : len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
459 641 : pos += 2;
460 641 : if (pos + len > end || len < 3) {
461 0 : wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
462 : "(len=%u; left=%u)",
463 0 : len, (unsigned int) (end - pos));
464 0 : return NULL;
465 : }
466 641 : f_end = pos + len;
467 :
468 641 : r->encoding = *pos++;
469 641 : realm_len = *pos++;
470 641 : if (pos + realm_len > f_end) {
471 0 : wpa_printf(MSG_DEBUG, "No room for NAI Realm "
472 : "(len=%u; left=%u)",
473 0 : realm_len, (unsigned int) (f_end - pos));
474 0 : return NULL;
475 : }
476 641 : wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
477 641 : r->realm = dup_binstr(pos, realm_len);
478 641 : if (r->realm == NULL)
479 0 : return NULL;
480 641 : pos += realm_len;
481 :
482 641 : if (pos + 1 > f_end) {
483 0 : wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
484 0 : return NULL;
485 : }
486 641 : r->eap_count = *pos++;
487 641 : wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
488 641 : if (pos + r->eap_count * 3 > f_end) {
489 0 : wpa_printf(MSG_DEBUG, "No room for EAP Methods");
490 0 : return NULL;
491 : }
492 641 : r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
493 641 : if (r->eap == NULL)
494 0 : return NULL;
495 :
496 1289 : for (e = 0; e < r->eap_count; e++) {
497 648 : pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
498 648 : if (pos == NULL)
499 0 : return NULL;
500 : }
501 :
502 641 : return f_end;
503 : }
504 :
505 :
506 354 : static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
507 : {
508 : struct nai_realm *realm;
509 : const u8 *pos, *end;
510 : u16 i, num;
511 :
512 354 : if (anqp == NULL || wpabuf_len(anqp) < 2)
513 0 : return NULL;
514 :
515 354 : pos = wpabuf_head_u8(anqp);
516 354 : end = pos + wpabuf_len(anqp);
517 354 : num = WPA_GET_LE16(pos);
518 354 : wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
519 354 : pos += 2;
520 :
521 354 : if (num * 5 > end - pos) {
522 0 : wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
523 : "enough data (%u octets) for that many realms",
524 0 : num, (unsigned int) (end - pos));
525 0 : return NULL;
526 : }
527 :
528 354 : realm = os_calloc(num, sizeof(struct nai_realm));
529 354 : if (realm == NULL)
530 0 : return NULL;
531 :
532 995 : for (i = 0; i < num; i++) {
533 641 : pos = nai_realm_parse_realm(&realm[i], pos, end);
534 641 : if (pos == NULL) {
535 0 : nai_realm_free(realm, num);
536 0 : return NULL;
537 : }
538 : }
539 :
540 354 : *count = num;
541 354 : return realm;
542 : }
543 :
544 :
545 419 : static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
546 : {
547 : char *tmp, *pos, *end;
548 419 : int match = 0;
549 :
550 419 : if (realm->realm == NULL || home_realm == NULL)
551 0 : return 0;
552 :
553 419 : if (os_strchr(realm->realm, ';') == NULL)
554 416 : return os_strcasecmp(realm->realm, home_realm) == 0;
555 :
556 3 : tmp = os_strdup(realm->realm);
557 3 : if (tmp == NULL)
558 0 : return 0;
559 :
560 3 : pos = tmp;
561 9 : while (*pos) {
562 6 : end = os_strchr(pos, ';');
563 6 : if (end)
564 6 : *end = '\0';
565 6 : if (os_strcasecmp(pos, home_realm) == 0) {
566 3 : match = 1;
567 3 : break;
568 : }
569 3 : if (end == NULL)
570 0 : break;
571 3 : pos = end + 1;
572 : }
573 :
574 3 : os_free(tmp);
575 :
576 3 : return match;
577 : }
578 :
579 :
580 611 : static int nai_realm_cred_username(struct nai_realm_eap *eap)
581 : {
582 611 : if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
583 2 : return 0; /* method not supported */
584 :
585 891 : if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
586 282 : eap->method != EAP_TYPE_FAST) {
587 : /* Only tunneled methods with username/password supported */
588 276 : return 0;
589 : }
590 :
591 333 : if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
592 31 : if (eap->inner_method &&
593 14 : eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
594 2 : return 0;
595 18 : if (!eap->inner_method &&
596 3 : eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL)
597 0 : return 0;
598 : }
599 :
600 331 : if (eap->method == EAP_TYPE_TTLS) {
601 316 : if (eap->inner_method == 0 && eap->inner_non_eap == 0)
602 1 : return 1; /* Assume TTLS/MSCHAPv2 is used */
603 328 : if (eap->inner_method &&
604 13 : eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
605 2 : return 0;
606 615 : if (eap->inner_non_eap &&
607 601 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
608 595 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
609 589 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
610 293 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
611 2 : return 0;
612 : }
613 :
614 349 : if (eap->inner_method &&
615 40 : eap->inner_method != EAP_TYPE_GTC &&
616 17 : eap->inner_method != EAP_TYPE_MSCHAPV2)
617 2 : return 0;
618 :
619 324 : return 1;
620 : }
621 :
622 :
623 7 : static int nai_realm_cred_cert(struct nai_realm_eap *eap)
624 : {
625 7 : if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
626 2 : return 0; /* method not supported */
627 :
628 5 : if (eap->method != EAP_TYPE_TLS) {
629 : /* Only EAP-TLS supported for credential authentication */
630 2 : return 0;
631 : }
632 :
633 3 : return 1;
634 : }
635 :
636 :
637 344 : static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
638 : struct nai_realm *realm)
639 : {
640 : u8 e;
641 :
642 688 : if (cred == NULL ||
643 688 : cred->username == NULL ||
644 688 : cred->username[0] == '\0' ||
645 679 : ((cred->password == NULL ||
646 344 : cred->password[0] == '\0') &&
647 16 : (cred->private_key == NULL ||
648 7 : cred->private_key[0] == '\0')))
649 2 : return NULL;
650 :
651 632 : for (e = 0; e < realm->eap_count; e++) {
652 618 : struct nai_realm_eap *eap = &realm->eap[e];
653 1229 : if (cred->password && cred->password[0] &&
654 611 : nai_realm_cred_username(eap))
655 325 : return eap;
656 300 : if (cred->private_key && cred->private_key[0] &&
657 7 : nai_realm_cred_cert(eap))
658 3 : return eap;
659 : }
660 :
661 14 : return NULL;
662 : }
663 :
664 :
665 : #ifdef INTERWORKING_3GPP
666 :
667 32 : static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
668 : {
669 : u8 plmn[3], plmn2[3];
670 : const u8 *pos, *end;
671 : u8 udhl;
672 :
673 : /*
674 : * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
675 : * operator is allowed to include only two digits of the MNC, so allow
676 : * matches based on both two and three digit MNC assumptions. Since some
677 : * SIM/USIM cards may not expose MNC length conveniently, we may be
678 : * provided the default MNC length 3 here and as such, checking with MNC
679 : * length 2 is justifiable even though 3GPP TS 24.234 does not mention
680 : * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
681 : * with otherwise matching values would not be good idea in general, so
682 : * this should not result in selecting incorrect networks.
683 : */
684 : /* Match with 3 digit MNC */
685 32 : plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
686 32 : plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
687 32 : plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
688 : /* Match with 2 digit MNC */
689 32 : plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
690 32 : plmn2[1] = (imsi[2] - '0') | 0xf0;
691 32 : plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
692 :
693 32 : if (anqp == NULL)
694 0 : return 0;
695 32 : pos = wpabuf_head_u8(anqp);
696 32 : end = pos + wpabuf_len(anqp);
697 32 : if (pos + 2 > end)
698 0 : return 0;
699 32 : if (*pos != 0) {
700 0 : wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
701 0 : return 0;
702 : }
703 32 : pos++;
704 32 : udhl = *pos++;
705 32 : if (pos + udhl > end) {
706 0 : wpa_printf(MSG_DEBUG, "Invalid UDHL");
707 0 : return 0;
708 : }
709 32 : end = pos + udhl;
710 :
711 192 : wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
712 192 : plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
713 : imsi, mnc_len);
714 :
715 68 : while (pos + 2 <= end) {
716 : u8 iei, len;
717 : const u8 *l_end;
718 32 : iei = *pos++;
719 32 : len = *pos++ & 0x7f;
720 32 : if (pos + len > end)
721 0 : break;
722 32 : l_end = pos + len;
723 :
724 36 : if (iei == 0 && len > 0) {
725 : /* PLMN List */
726 : u8 num, i;
727 32 : wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
728 : pos, len);
729 32 : num = *pos++;
730 40 : for (i = 0; i < num; i++) {
731 36 : if (pos + 3 > l_end)
732 0 : break;
733 56 : if (os_memcmp(pos, plmn, 3) == 0 ||
734 20 : os_memcmp(pos, plmn2, 3) == 0)
735 28 : return 1; /* Found matching PLMN */
736 8 : pos += 3;
737 : }
738 : } else {
739 0 : wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
740 : pos, len);
741 : }
742 :
743 4 : pos = l_end;
744 : }
745 :
746 4 : return 0;
747 : }
748 :
749 :
750 27 : static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
751 : size_t mnc_len, char prefix)
752 : {
753 : const char *sep, *msin;
754 : char *end, *pos;
755 : size_t msin_len, plmn_len;
756 :
757 : /*
758 : * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
759 : * Root NAI:
760 : * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
761 : * <MNC> is zero-padded to three digits in case two-digit MNC is used
762 : */
763 :
764 27 : if (imsi == NULL || os_strlen(imsi) > 16) {
765 0 : wpa_printf(MSG_DEBUG, "No valid IMSI available");
766 0 : return -1;
767 : }
768 27 : sep = os_strchr(imsi, '-');
769 27 : if (sep) {
770 27 : plmn_len = sep - imsi;
771 27 : msin = sep + 1;
772 0 : } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
773 0 : plmn_len = 3 + mnc_len;
774 0 : msin = imsi + plmn_len;
775 : } else
776 0 : return -1;
777 27 : if (plmn_len != 5 && plmn_len != 6)
778 0 : return -1;
779 27 : msin_len = os_strlen(msin);
780 :
781 27 : pos = nai;
782 27 : end = nai + nai_len;
783 27 : if (prefix)
784 9 : *pos++ = prefix;
785 27 : os_memcpy(pos, imsi, plmn_len);
786 27 : pos += plmn_len;
787 27 : os_memcpy(pos, msin, msin_len);
788 27 : pos += msin_len;
789 27 : pos += os_snprintf(pos, end - pos, "@wlan.mnc");
790 27 : if (plmn_len == 5) {
791 8 : *pos++ = '0';
792 8 : *pos++ = imsi[3];
793 8 : *pos++ = imsi[4];
794 : } else {
795 19 : *pos++ = imsi[3];
796 19 : *pos++ = imsi[4];
797 19 : *pos++ = imsi[5];
798 : }
799 81 : pos += os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
800 81 : imsi[0], imsi[1], imsi[2]);
801 :
802 27 : return 0;
803 : }
804 :
805 :
806 9 : static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
807 : {
808 : char nai[100];
809 9 : if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
810 0 : return -1;
811 9 : return wpa_config_set_quoted(ssid, "identity", nai);
812 : }
813 :
814 : #endif /* INTERWORKING_3GPP */
815 :
816 :
817 86 : static int already_connected(struct wpa_supplicant *wpa_s,
818 : struct wpa_cred *cred, struct wpa_bss *bss)
819 : {
820 : struct wpa_ssid *ssid, *sel_ssid;
821 : struct wpa_bss *selected;
822 :
823 86 : if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
824 75 : return 0;
825 :
826 11 : ssid = wpa_s->current_ssid;
827 11 : if (ssid->parent_cred != cred)
828 3 : return 0;
829 :
830 15 : if (ssid->ssid_len != bss->ssid_len ||
831 7 : os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
832 1 : return 0;
833 :
834 7 : sel_ssid = NULL;
835 7 : selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
836 7 : if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
837 1 : return 0; /* higher priority network in scan results */
838 :
839 6 : return 1;
840 : }
841 :
842 :
843 80 : static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
844 : struct wpa_cred *cred,
845 : struct wpa_bss *bss)
846 : {
847 : struct wpa_ssid *ssid;
848 :
849 86 : for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
850 8 : if (ssid->parent_cred != cred)
851 5 : continue;
852 5 : if (ssid->ssid_len != bss->ssid_len ||
853 2 : os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
854 1 : continue;
855 :
856 2 : break;
857 : }
858 :
859 80 : if (ssid == NULL)
860 158 : return;
861 :
862 2 : wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
863 :
864 2 : if (ssid == wpa_s->current_ssid) {
865 1 : wpa_sm_set_config(wpa_s->wpa, NULL);
866 1 : eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
867 1 : wpa_supplicant_deauthenticate(wpa_s,
868 : WLAN_REASON_DEAUTH_LEAVING);
869 : }
870 :
871 2 : wpas_notify_network_removed(wpa_s, ssid);
872 2 : wpa_config_remove_network(wpa_s->conf, ssid->id);
873 : }
874 :
875 :
876 80 : static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
877 : struct wpa_ssid *ssid)
878 : {
879 80 : const char *key_mgmt = NULL;
880 : #ifdef CONFIG_IEEE80211R
881 : int res;
882 : struct wpa_driver_capa capa;
883 :
884 80 : res = wpa_drv_get_capa(wpa_s, &capa);
885 80 : if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
886 160 : key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
887 80 : "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
888 : "WPA-EAP FT-EAP";
889 : }
890 : #endif /* CONFIG_IEEE80211R */
891 :
892 80 : if (!key_mgmt)
893 0 : key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
894 0 : "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
895 80 : if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0)
896 0 : return -1;
897 80 : if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
898 0 : return -1;
899 80 : if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
900 0 : return -1;
901 80 : return 0;
902 : }
903 :
904 :
905 10 : static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
906 : struct wpa_cred *cred,
907 : struct wpa_bss *bss)
908 : {
909 : #ifdef INTERWORKING_3GPP
910 : struct wpa_ssid *ssid;
911 : int eap_type;
912 : int res;
913 : char prefix;
914 :
915 10 : if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
916 0 : return -1;
917 :
918 60 : wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
919 60 : MAC2STR(bss->bssid));
920 :
921 10 : if (already_connected(wpa_s, cred, bss)) {
922 6 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
923 6 : MAC2STR(bss->bssid));
924 1 : return 0;
925 : }
926 :
927 9 : remove_duplicate_network(wpa_s, cred, bss);
928 :
929 9 : ssid = wpa_config_add_network(wpa_s->conf);
930 9 : if (ssid == NULL)
931 0 : return -1;
932 9 : ssid->parent_cred = cred;
933 :
934 9 : wpas_notify_network_added(wpa_s, ssid);
935 9 : wpa_config_set_network_defaults(ssid);
936 9 : ssid->priority = cred->priority;
937 9 : ssid->temporary = 1;
938 9 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
939 9 : if (ssid->ssid == NULL)
940 0 : goto fail;
941 9 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
942 9 : ssid->ssid_len = bss->ssid_len;
943 9 : ssid->eap.sim_num = cred->sim_num;
944 :
945 9 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
946 0 : goto fail;
947 :
948 9 : eap_type = EAP_TYPE_SIM;
949 : if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
950 : eap_type = EAP_TYPE_AKA;
951 9 : if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
952 11 : if (cred->eap_method[0].method == EAP_TYPE_SIM ||
953 3 : cred->eap_method[0].method == EAP_TYPE_AKA ||
954 1 : cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
955 9 : eap_type = cred->eap_method[0].method;
956 : }
957 :
958 9 : switch (eap_type) {
959 : case EAP_TYPE_SIM:
960 7 : prefix = '1';
961 7 : res = wpa_config_set(ssid, "eap", "SIM", 0);
962 7 : break;
963 : case EAP_TYPE_AKA:
964 1 : prefix = '0';
965 1 : res = wpa_config_set(ssid, "eap", "AKA", 0);
966 1 : break;
967 : case EAP_TYPE_AKA_PRIME:
968 1 : prefix = '6';
969 1 : res = wpa_config_set(ssid, "eap", "AKA'", 0);
970 1 : break;
971 : default:
972 0 : res = -1;
973 0 : break;
974 : }
975 9 : if (res < 0) {
976 0 : wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
977 : eap_type);
978 0 : goto fail;
979 : }
980 :
981 9 : if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
982 0 : wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
983 0 : goto fail;
984 : }
985 :
986 9 : if (cred->milenage && cred->milenage[0]) {
987 10 : if (wpa_config_set_quoted(ssid, "password",
988 5 : cred->milenage) < 0)
989 0 : goto fail;
990 4 : } else if (cred->pcsc) {
991 0 : if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
992 0 : goto fail;
993 0 : if (wpa_s->conf->pcsc_pin &&
994 0 : wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
995 : < 0)
996 0 : goto fail;
997 : }
998 :
999 9 : wpa_s->next_ssid = ssid;
1000 9 : wpa_config_update_prio_list(wpa_s->conf);
1001 9 : interworking_reconnect(wpa_s);
1002 :
1003 9 : return 0;
1004 :
1005 : fail:
1006 0 : wpas_notify_network_removed(wpa_s, ssid);
1007 0 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1008 : #endif /* INTERWORKING_3GPP */
1009 0 : return -1;
1010 : }
1011 :
1012 :
1013 32 : static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1014 : size_t rc_len)
1015 : {
1016 : const u8 *pos, *end;
1017 : u8 lens;
1018 :
1019 32 : if (ie == NULL)
1020 0 : return 0;
1021 :
1022 32 : pos = ie + 2;
1023 32 : end = ie + 2 + ie[1];
1024 :
1025 : /* Roaming Consortium element:
1026 : * Number of ANQP OIs
1027 : * OI #1 and #2 lengths
1028 : * OI #1, [OI #2], [OI #3]
1029 : */
1030 :
1031 32 : if (pos + 2 > end)
1032 0 : return 0;
1033 :
1034 32 : pos++; /* skip Number of ANQP OIs */
1035 32 : lens = *pos++;
1036 32 : if (pos + (lens & 0x0f) + (lens >> 4) > end)
1037 0 : return 0;
1038 :
1039 32 : if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1040 12 : return 1;
1041 20 : pos += lens & 0x0f;
1042 :
1043 20 : if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1044 4 : return 1;
1045 16 : pos += lens >> 4;
1046 :
1047 20 : if (pos < end && (size_t) (end - pos) == rc_len &&
1048 4 : os_memcmp(pos, rc_id, rc_len) == 0)
1049 4 : return 1;
1050 :
1051 12 : return 0;
1052 : }
1053 :
1054 :
1055 12 : static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1056 : const u8 *rc_id, size_t rc_len)
1057 : {
1058 : const u8 *pos, *end;
1059 : u8 len;
1060 :
1061 12 : if (anqp == NULL)
1062 4 : return 0;
1063 :
1064 8 : pos = wpabuf_head(anqp);
1065 8 : end = pos + wpabuf_len(anqp);
1066 :
1067 : /* Set of <OI Length, OI> duples */
1068 44 : while (pos < end) {
1069 32 : len = *pos++;
1070 32 : if (pos + len > end)
1071 0 : break;
1072 32 : if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1073 4 : return 1;
1074 28 : pos += len;
1075 : }
1076 :
1077 4 : return 0;
1078 : }
1079 :
1080 :
1081 32 : static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1082 : const u8 *rc_id, size_t rc_len)
1083 : {
1084 44 : return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1085 12 : roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1086 : }
1087 :
1088 :
1089 309 : static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1090 : {
1091 : const u8 *ie;
1092 :
1093 309 : if (cred->required_roaming_consortium_len == 0)
1094 297 : return 0;
1095 :
1096 12 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1097 :
1098 12 : if (ie == NULL &&
1099 0 : (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1100 0 : return 1;
1101 :
1102 36 : return !roaming_consortium_match(ie,
1103 12 : bss->anqp ?
1104 12 : bss->anqp->roaming_consortium : NULL,
1105 12 : cred->required_roaming_consortium,
1106 : cred->required_roaming_consortium_len);
1107 : }
1108 :
1109 :
1110 261 : static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1111 : {
1112 : size_t i;
1113 :
1114 261 : if (!cred->excluded_ssid)
1115 241 : return 0;
1116 :
1117 30 : for (i = 0; i < cred->num_excluded_ssid; i++) {
1118 20 : struct excluded_ssid *e = &cred->excluded_ssid[i];
1119 30 : if (bss->ssid_len == e->ssid_len &&
1120 10 : os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1121 10 : return 1;
1122 : }
1123 :
1124 10 : return 0;
1125 : }
1126 :
1127 :
1128 412 : static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1129 : struct wpa_cred *cred, struct wpa_bss *bss)
1130 : {
1131 : int res;
1132 : unsigned int dl_bandwidth, ul_bandwidth;
1133 : const u8 *wan;
1134 : u8 wan_info, dl_load, ul_load;
1135 : u16 lmd;
1136 : u32 ul_speed, dl_speed;
1137 :
1138 805 : if (!cred->min_dl_bandwidth_home &&
1139 786 : !cred->min_ul_bandwidth_home &&
1140 753 : !cred->min_dl_bandwidth_roaming &&
1141 360 : !cred->min_ul_bandwidth_roaming)
1142 360 : return 0; /* No bandwidth constraint specified */
1143 :
1144 52 : if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1145 2 : return 0; /* No WAN Metrics known - ignore constraint */
1146 :
1147 50 : wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1148 50 : wan_info = wan[0];
1149 50 : if (wan_info & BIT(3))
1150 0 : return 1; /* WAN link at capacity */
1151 50 : lmd = WPA_GET_LE16(wan + 11);
1152 50 : if (lmd == 0)
1153 0 : return 0; /* Downlink/Uplink Load was not measured */
1154 50 : dl_speed = WPA_GET_LE32(wan + 1);
1155 50 : ul_speed = WPA_GET_LE32(wan + 5);
1156 50 : dl_load = wan[9];
1157 50 : ul_load = wan[10];
1158 :
1159 50 : if (dl_speed >= 0xffffff)
1160 0 : dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1161 : else
1162 50 : dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1163 :
1164 50 : if (ul_speed >= 0xffffff)
1165 0 : ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1166 : else
1167 50 : ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1168 :
1169 100 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1170 50 : bss->anqp->domain_name : NULL);
1171 50 : if (res > 0) {
1172 17 : if (cred->min_dl_bandwidth_home > dl_bandwidth)
1173 10 : return 1;
1174 7 : if (cred->min_ul_bandwidth_home > ul_bandwidth)
1175 2 : return 1;
1176 : } else {
1177 33 : if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1178 22 : return 1;
1179 11 : if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1180 2 : return 1;
1181 : }
1182 :
1183 14 : return 0;
1184 : }
1185 :
1186 :
1187 392 : static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1188 : struct wpa_cred *cred, struct wpa_bss *bss)
1189 : {
1190 : const u8 *ie;
1191 : int res;
1192 :
1193 392 : if (!cred->max_bss_load)
1194 374 : return 0; /* No BSS Load constraint specified */
1195 :
1196 18 : ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1197 18 : if (ie == NULL || ie[1] < 3)
1198 3 : return 0; /* No BSS Load advertised */
1199 :
1200 30 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1201 15 : bss->anqp->domain_name : NULL);
1202 15 : if (res <= 0)
1203 0 : return 0; /* Not a home network */
1204 :
1205 15 : return ie[4] > cred->max_bss_load;
1206 : }
1207 :
1208 :
1209 20 : static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1210 : {
1211 103 : while (pos + 4 <= end) {
1212 69 : if (pos[0] == proto && pos[3] == 1 /* Open */)
1213 6 : return 1;
1214 63 : pos += 4;
1215 : }
1216 :
1217 14 : return 0;
1218 : }
1219 :
1220 :
1221 11 : static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1222 : u16 port)
1223 : {
1224 51 : while (pos + 4 <= end) {
1225 37 : if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1226 6 : pos[3] == 1 /* Open */)
1227 2 : return 1;
1228 29 : pos += 4;
1229 : }
1230 :
1231 9 : return 0;
1232 : }
1233 :
1234 :
1235 384 : static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1236 : struct wpa_cred *cred, struct wpa_bss *bss)
1237 : {
1238 : int res;
1239 : const u8 *capab, *end;
1240 : unsigned int i, j;
1241 : int *ports;
1242 :
1243 384 : if (!cred->num_req_conn_capab)
1244 353 : return 0; /* No connection capability constraint specified */
1245 :
1246 31 : if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1247 0 : return 0; /* No Connection Capability known - ignore constraint
1248 : */
1249 :
1250 62 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1251 31 : bss->anqp->domain_name : NULL);
1252 31 : if (res > 0)
1253 2 : return 0; /* No constraint in home network */
1254 :
1255 29 : capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1256 29 : end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1257 :
1258 37 : for (i = 0; i < cred->num_req_conn_capab; i++) {
1259 31 : ports = cred->req_conn_capab_port[i];
1260 31 : if (!ports) {
1261 20 : if (!has_proto_match(capab, end,
1262 20 : cred->req_conn_capab_proto[i]))
1263 14 : return 1;
1264 : } else {
1265 13 : for (j = 0; ports[j] > -1; j++) {
1266 22 : if (!has_proto_port_match(
1267 : capab, end,
1268 11 : cred->req_conn_capab_proto[i],
1269 11 : ports[j]))
1270 9 : return 1;
1271 : }
1272 : }
1273 : }
1274 :
1275 6 : return 0;
1276 : }
1277 :
1278 :
1279 331 : static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1280 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1281 : int *excluded)
1282 : {
1283 331 : struct wpa_cred *cred, *selected = NULL;
1284 : const u8 *ie;
1285 331 : int is_excluded = 0;
1286 :
1287 331 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1288 :
1289 343 : if (ie == NULL &&
1290 12 : (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1291 12 : return NULL;
1292 :
1293 319 : if (wpa_s->conf->cred == NULL)
1294 0 : return NULL;
1295 :
1296 666 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1297 347 : if (cred->roaming_consortium_len == 0)
1298 327 : continue;
1299 :
1300 60 : if (!roaming_consortium_match(ie,
1301 20 : bss->anqp ?
1302 20 : bss->anqp->roaming_consortium :
1303 : NULL,
1304 20 : cred->roaming_consortium,
1305 : cred->roaming_consortium_len))
1306 0 : continue;
1307 :
1308 20 : if (cred_no_required_oi_match(cred, bss))
1309 0 : continue;
1310 20 : if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1311 0 : continue;
1312 20 : if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1313 0 : continue;
1314 20 : if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1315 0 : continue;
1316 20 : if (cred_excluded_ssid(cred, bss)) {
1317 2 : if (excluded == NULL)
1318 0 : continue;
1319 2 : if (selected == NULL) {
1320 2 : selected = cred;
1321 2 : is_excluded = 1;
1322 : }
1323 : } else {
1324 18 : if (selected == NULL || is_excluded ||
1325 0 : cred_prio_cmp(selected, cred) < 0) {
1326 18 : selected = cred;
1327 18 : is_excluded = 0;
1328 : }
1329 : }
1330 : }
1331 :
1332 319 : if (excluded)
1333 319 : *excluded = is_excluded;
1334 :
1335 319 : return selected;
1336 : }
1337 :
1338 :
1339 71 : static int interworking_set_eap_params(struct wpa_ssid *ssid,
1340 : struct wpa_cred *cred, int ttls)
1341 : {
1342 71 : if (cred->eap_method) {
1343 10 : ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1344 5 : cred->eap_method->method == EAP_TYPE_TTLS;
1345 :
1346 5 : os_free(ssid->eap.eap_methods);
1347 5 : ssid->eap.eap_methods =
1348 5 : os_malloc(sizeof(struct eap_method_type) * 2);
1349 5 : if (ssid->eap.eap_methods == NULL)
1350 0 : return -1;
1351 5 : os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1352 : sizeof(*cred->eap_method));
1353 5 : ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1354 5 : ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1355 : }
1356 :
1357 71 : if (ttls && cred->username && cred->username[0]) {
1358 : const char *pos;
1359 : char *anon;
1360 : /* Use anonymous NAI in Phase 1 */
1361 61 : pos = os_strchr(cred->username, '@');
1362 61 : if (pos) {
1363 0 : size_t buflen = 9 + os_strlen(pos) + 1;
1364 0 : anon = os_malloc(buflen);
1365 0 : if (anon == NULL)
1366 0 : return -1;
1367 0 : os_snprintf(anon, buflen, "anonymous%s", pos);
1368 61 : } else if (cred->realm) {
1369 61 : size_t buflen = 10 + os_strlen(cred->realm) + 1;
1370 61 : anon = os_malloc(buflen);
1371 61 : if (anon == NULL)
1372 0 : return -1;
1373 61 : os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1374 : } else {
1375 0 : anon = os_strdup("anonymous");
1376 0 : if (anon == NULL)
1377 0 : return -1;
1378 : }
1379 61 : if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1380 : 0) {
1381 0 : os_free(anon);
1382 0 : return -1;
1383 : }
1384 61 : os_free(anon);
1385 : }
1386 :
1387 142 : if (cred->username && cred->username[0] &&
1388 71 : wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1389 0 : return -1;
1390 :
1391 71 : if (cred->password && cred->password[0]) {
1392 71 : if (cred->ext_password &&
1393 1 : wpa_config_set(ssid, "password", cred->password, 0) < 0)
1394 0 : return -1;
1395 139 : if (!cred->ext_password &&
1396 69 : wpa_config_set_quoted(ssid, "password", cred->password) <
1397 : 0)
1398 0 : return -1;
1399 : }
1400 :
1401 72 : if (cred->client_cert && cred->client_cert[0] &&
1402 1 : wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1403 0 : return -1;
1404 :
1405 : #ifdef ANDROID
1406 : if (cred->private_key &&
1407 : os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1408 : /* Use OpenSSL engine configuration for Android keystore */
1409 : if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1410 : wpa_config_set_quoted(ssid, "key_id",
1411 : cred->private_key + 11) < 0 ||
1412 : wpa_config_set(ssid, "engine", "1", 0) < 0)
1413 : return -1;
1414 : } else
1415 : #endif /* ANDROID */
1416 72 : if (cred->private_key && cred->private_key[0] &&
1417 1 : wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1418 0 : return -1;
1419 :
1420 71 : if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1421 0 : wpa_config_set_quoted(ssid, "private_key_passwd",
1422 0 : cred->private_key_passwd) < 0)
1423 0 : return -1;
1424 :
1425 71 : if (cred->phase1) {
1426 0 : os_free(ssid->eap.phase1);
1427 0 : ssid->eap.phase1 = os_strdup(cred->phase1);
1428 : }
1429 71 : if (cred->phase2) {
1430 1 : os_free(ssid->eap.phase2);
1431 1 : ssid->eap.phase2 = os_strdup(cred->phase2);
1432 : }
1433 :
1434 77 : if (cred->ca_cert && cred->ca_cert[0] &&
1435 6 : wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1436 0 : return -1;
1437 :
1438 73 : if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1439 2 : wpa_config_set_quoted(ssid, "domain_suffix_match",
1440 2 : cred->domain_suffix_match) < 0)
1441 0 : return -1;
1442 :
1443 71 : ssid->eap.ocsp = cred->ocsp;
1444 :
1445 71 : return 0;
1446 : }
1447 :
1448 :
1449 9 : static int interworking_connect_roaming_consortium(
1450 : struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1451 : struct wpa_bss *bss)
1452 : {
1453 : struct wpa_ssid *ssid;
1454 :
1455 54 : wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1456 54 : "roaming consortium match", MAC2STR(bss->bssid));
1457 :
1458 9 : if (already_connected(wpa_s, cred, bss)) {
1459 24 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1460 24 : MAC2STR(bss->bssid));
1461 4 : return 0;
1462 : }
1463 :
1464 5 : remove_duplicate_network(wpa_s, cred, bss);
1465 :
1466 5 : ssid = wpa_config_add_network(wpa_s->conf);
1467 5 : if (ssid == NULL)
1468 0 : return -1;
1469 5 : ssid->parent_cred = cred;
1470 5 : wpas_notify_network_added(wpa_s, ssid);
1471 5 : wpa_config_set_network_defaults(ssid);
1472 5 : ssid->priority = cred->priority;
1473 5 : ssid->temporary = 1;
1474 5 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
1475 5 : if (ssid->ssid == NULL)
1476 0 : goto fail;
1477 5 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1478 5 : ssid->ssid_len = bss->ssid_len;
1479 :
1480 5 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1481 0 : goto fail;
1482 :
1483 5 : if (cred->eap_method == NULL) {
1484 0 : wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1485 : "credential using roaming consortium");
1486 0 : goto fail;
1487 : }
1488 :
1489 10 : if (interworking_set_eap_params(
1490 : ssid, cred,
1491 5 : cred->eap_method->vendor == EAP_VENDOR_IETF &&
1492 5 : cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1493 0 : goto fail;
1494 :
1495 5 : wpa_s->next_ssid = ssid;
1496 5 : wpa_config_update_prio_list(wpa_s->conf);
1497 5 : interworking_reconnect(wpa_s);
1498 :
1499 5 : return 0;
1500 :
1501 : fail:
1502 0 : wpas_notify_network_removed(wpa_s, ssid);
1503 0 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1504 0 : return -1;
1505 : }
1506 :
1507 :
1508 87 : static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1509 : struct wpa_bss *bss, int allow_excluded)
1510 : {
1511 : struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1512 : struct wpa_ssid *ssid;
1513 : struct nai_realm *realm;
1514 87 : struct nai_realm_eap *eap = NULL;
1515 : u16 count, i;
1516 : char buf[100];
1517 87 : int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1518 :
1519 87 : if (wpa_s->conf->cred == NULL || bss == NULL)
1520 0 : return -1;
1521 173 : if (disallowed_bssid(wpa_s, bss->bssid) ||
1522 86 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1523 6 : wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS "
1524 6 : MACSTR, MAC2STR(bss->bssid));
1525 1 : return -1;
1526 : }
1527 :
1528 516 : wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1529 : " for connection (allow_excluded=%d)",
1530 516 : MAC2STR(bss->bssid), allow_excluded);
1531 :
1532 86 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1533 : /*
1534 : * We currently support only HS 2.0 networks and those are
1535 : * required to use WPA2-Enterprise.
1536 : */
1537 0 : wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1538 : "RSN");
1539 0 : return -1;
1540 : }
1541 :
1542 86 : cred_rc = interworking_credentials_available_roaming_consortium(
1543 : wpa_s, bss, 0, excl);
1544 86 : if (cred_rc) {
1545 9 : wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1546 : "consortium matching credential priority %d "
1547 : "sp_priority %d",
1548 : cred_rc->priority, cred_rc->sp_priority);
1549 9 : if (allow_excluded && excl && !(*excl))
1550 9 : excl = NULL;
1551 : }
1552 :
1553 86 : cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1554 86 : if (cred) {
1555 64 : wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list "
1556 : "matching credential priority %d sp_priority %d",
1557 : cred->priority, cred->sp_priority);
1558 64 : if (allow_excluded && excl && !(*excl))
1559 63 : excl = NULL;
1560 : }
1561 :
1562 86 : cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1563 : excl);
1564 86 : if (cred_3gpp) {
1565 11 : wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching "
1566 : "credential priority %d sp_priority %d",
1567 : cred_3gpp->priority, cred_3gpp->sp_priority);
1568 11 : if (allow_excluded && excl && !(*excl))
1569 8 : excl = NULL;
1570 : }
1571 :
1572 86 : if (!cred_rc && !cred && !cred_3gpp) {
1573 6 : wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits");
1574 6 : cred_rc = interworking_credentials_available_roaming_consortium(
1575 : wpa_s, bss, 1, excl);
1576 6 : if (cred_rc) {
1577 0 : wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1578 : "consortium matching credential priority %d "
1579 : "sp_priority %d (ignore BW)",
1580 : cred_rc->priority, cred_rc->sp_priority);
1581 0 : if (allow_excluded && excl && !(*excl))
1582 0 : excl = NULL;
1583 : }
1584 :
1585 6 : cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1586 : excl);
1587 6 : if (cred) {
1588 6 : wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm "
1589 : "list matching credential priority %d "
1590 : "sp_priority %d (ignore BW)",
1591 : cred->priority, cred->sp_priority);
1592 6 : if (allow_excluded && excl && !(*excl))
1593 6 : excl = NULL;
1594 : }
1595 :
1596 6 : cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1597 : 1, excl);
1598 6 : if (cred_3gpp) {
1599 0 : wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP "
1600 : "matching credential priority %d "
1601 : "sp_priority %d (ignore BW)",
1602 : cred_3gpp->priority, cred_3gpp->sp_priority);
1603 0 : if (allow_excluded && excl && !(*excl))
1604 0 : excl = NULL;
1605 : }
1606 : }
1607 :
1608 86 : if (cred_rc &&
1609 1 : (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1610 0 : (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1611 9 : return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1612 : bss);
1613 :
1614 77 : if (cred_3gpp &&
1615 3 : (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1616 10 : return interworking_connect_3gpp(wpa_s, cred_3gpp, bss);
1617 : }
1618 :
1619 67 : if (cred == NULL) {
1620 0 : wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1621 0 : "found for " MACSTR, MAC2STR(bss->bssid));
1622 0 : return -1;
1623 : }
1624 :
1625 67 : realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1626 : &count);
1627 67 : if (realm == NULL) {
1628 0 : wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1629 0 : "Realm list from " MACSTR, MAC2STR(bss->bssid));
1630 0 : return -1;
1631 : }
1632 :
1633 68 : for (i = 0; i < count; i++) {
1634 68 : if (!nai_realm_match(&realm[i], cred->realm))
1635 1 : continue;
1636 67 : eap = nai_realm_find_eap(cred, &realm[i]);
1637 67 : if (eap)
1638 67 : break;
1639 : }
1640 :
1641 67 : if (!eap) {
1642 0 : wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1643 : "and EAP method found for " MACSTR,
1644 0 : MAC2STR(bss->bssid));
1645 0 : nai_realm_free(realm, count);
1646 0 : return -1;
1647 : }
1648 :
1649 402 : wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1650 402 : MAC2STR(bss->bssid));
1651 :
1652 67 : if (already_connected(wpa_s, cred, bss)) {
1653 6 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1654 6 : MAC2STR(bss->bssid));
1655 1 : nai_realm_free(realm, count);
1656 1 : return 0;
1657 : }
1658 :
1659 66 : remove_duplicate_network(wpa_s, cred, bss);
1660 :
1661 66 : ssid = wpa_config_add_network(wpa_s->conf);
1662 66 : if (ssid == NULL) {
1663 0 : nai_realm_free(realm, count);
1664 0 : return -1;
1665 : }
1666 66 : ssid->parent_cred = cred;
1667 66 : wpas_notify_network_added(wpa_s, ssid);
1668 66 : wpa_config_set_network_defaults(ssid);
1669 66 : ssid->priority = cred->priority;
1670 66 : ssid->temporary = 1;
1671 66 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
1672 66 : if (ssid->ssid == NULL)
1673 0 : goto fail;
1674 66 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1675 66 : ssid->ssid_len = bss->ssid_len;
1676 :
1677 66 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1678 0 : goto fail;
1679 :
1680 66 : if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1681 66 : eap->method), 0) < 0)
1682 0 : goto fail;
1683 :
1684 66 : switch (eap->method) {
1685 : case EAP_TYPE_TTLS:
1686 60 : if (eap->inner_method) {
1687 3 : os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1688 : eap_get_name(EAP_VENDOR_IETF,
1689 3 : eap->inner_method));
1690 3 : if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1691 0 : goto fail;
1692 3 : break;
1693 : }
1694 57 : switch (eap->inner_non_eap) {
1695 : case NAI_REALM_INNER_NON_EAP_PAP:
1696 1 : if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1697 : 0)
1698 0 : goto fail;
1699 1 : break;
1700 : case NAI_REALM_INNER_NON_EAP_CHAP:
1701 1 : if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1702 : < 0)
1703 0 : goto fail;
1704 1 : break;
1705 : case NAI_REALM_INNER_NON_EAP_MSCHAP:
1706 1 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1707 : 0) < 0)
1708 0 : goto fail;
1709 1 : break;
1710 : case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1711 54 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1712 : 0) < 0)
1713 0 : goto fail;
1714 54 : break;
1715 : default:
1716 : /* EAP params were not set - assume TTLS/MSCHAPv2 */
1717 0 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1718 : 0) < 0)
1719 0 : goto fail;
1720 0 : break;
1721 : }
1722 57 : break;
1723 : case EAP_TYPE_PEAP:
1724 : case EAP_TYPE_FAST:
1725 5 : if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1726 : 0) < 0)
1727 0 : goto fail;
1728 5 : if (wpa_config_set(ssid, "pac_file",
1729 : "\"blob://pac_interworking\"", 0) < 0)
1730 0 : goto fail;
1731 9 : os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
1732 : eap_get_name(EAP_VENDOR_IETF,
1733 5 : eap->inner_method ?
1734 4 : eap->inner_method :
1735 : EAP_TYPE_MSCHAPV2));
1736 5 : if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1737 0 : goto fail;
1738 5 : break;
1739 : case EAP_TYPE_TLS:
1740 1 : break;
1741 : }
1742 :
1743 66 : if (interworking_set_eap_params(ssid, cred,
1744 66 : eap->method == EAP_TYPE_TTLS) < 0)
1745 0 : goto fail;
1746 :
1747 66 : nai_realm_free(realm, count);
1748 :
1749 66 : wpa_s->next_ssid = ssid;
1750 66 : wpa_config_update_prio_list(wpa_s->conf);
1751 66 : interworking_reconnect(wpa_s);
1752 :
1753 66 : return 0;
1754 :
1755 : fail:
1756 0 : wpas_notify_network_removed(wpa_s, ssid);
1757 0 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1758 0 : nai_realm_free(realm, count);
1759 0 : return -1;
1760 : }
1761 :
1762 :
1763 87 : int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1764 : {
1765 87 : return interworking_connect_helper(wpa_s, bss, 1);
1766 : }
1767 :
1768 :
1769 : #ifdef PCSC_FUNCS
1770 : static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1771 : {
1772 : size_t len;
1773 :
1774 : if (wpa_s->imsi[0] && wpa_s->mnc_len)
1775 : return 0;
1776 :
1777 : len = sizeof(wpa_s->imsi) - 1;
1778 : if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1779 : scard_deinit(wpa_s->scard);
1780 : wpa_s->scard = NULL;
1781 : wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1782 : return -1;
1783 : }
1784 : wpa_s->imsi[len] = '\0';
1785 : wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1786 : wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1787 : wpa_s->imsi, wpa_s->mnc_len);
1788 :
1789 : return 0;
1790 : }
1791 : #endif /* PCSC_FUNCS */
1792 :
1793 :
1794 331 : static struct wpa_cred * interworking_credentials_available_3gpp(
1795 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1796 : int *excluded)
1797 : {
1798 331 : struct wpa_cred *selected = NULL;
1799 : #ifdef INTERWORKING_3GPP
1800 : struct wpa_cred *cred;
1801 : int ret;
1802 331 : int is_excluded = 0;
1803 :
1804 331 : if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1805 299 : return NULL;
1806 :
1807 : #ifdef CONFIG_EAP_PROXY
1808 : if (!wpa_s->imsi[0]) {
1809 : size_t len;
1810 : wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy");
1811 : wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1812 : wpa_s->imsi,
1813 : &len);
1814 : if (wpa_s->mnc_len > 0) {
1815 : wpa_s->imsi[len] = '\0';
1816 : wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
1817 : wpa_s->imsi, wpa_s->mnc_len);
1818 : } else {
1819 : wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
1820 : }
1821 : }
1822 : #endif /* CONFIG_EAP_PROXY */
1823 :
1824 80 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1825 : char *sep;
1826 : const char *imsi;
1827 : int mnc_len;
1828 : char imsi_buf[16];
1829 : size_t msin_len;
1830 :
1831 : #ifdef PCSC_FUNCS
1832 : if (cred->pcsc && wpa_s->scard) {
1833 : if (interworking_pcsc_read_imsi(wpa_s) < 0)
1834 : continue;
1835 : imsi = wpa_s->imsi;
1836 : mnc_len = wpa_s->mnc_len;
1837 : goto compare;
1838 : }
1839 : #endif /* PCSC_FUNCS */
1840 : #ifdef CONFIG_EAP_PROXY
1841 : if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1842 : imsi = wpa_s->imsi;
1843 : mnc_len = wpa_s->mnc_len;
1844 : goto compare;
1845 : }
1846 : #endif /* CONFIG_EAP_PROXY */
1847 :
1848 80 : if (cred->imsi == NULL || !cred->imsi[0] ||
1849 52 : (!wpa_s->conf->external_sim &&
1850 40 : (cred->milenage == NULL || !cred->milenage[0])))
1851 32 : continue;
1852 :
1853 32 : sep = os_strchr(cred->imsi, '-');
1854 64 : if (sep == NULL ||
1855 52 : (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1856 0 : continue;
1857 32 : mnc_len = sep - cred->imsi - 3;
1858 32 : os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1859 32 : sep++;
1860 32 : msin_len = os_strlen(cred->imsi);
1861 32 : if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1862 32 : msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1863 32 : os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1864 32 : imsi_buf[3 + mnc_len + msin_len] = '\0';
1865 32 : imsi = imsi_buf;
1866 :
1867 : #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1868 : compare:
1869 : #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1870 192 : wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1871 192 : MACSTR, MAC2STR(bss->bssid));
1872 32 : ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1873 32 : wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1874 32 : if (ret) {
1875 28 : if (cred_no_required_oi_match(cred, bss))
1876 0 : continue;
1877 56 : if (!ignore_bw &&
1878 28 : cred_below_min_backhaul(wpa_s, cred, bss))
1879 0 : continue;
1880 56 : if (!ignore_bw &&
1881 28 : cred_over_max_bss_load(wpa_s, cred, bss))
1882 0 : continue;
1883 56 : if (!ignore_bw &&
1884 28 : cred_conn_capab_missing(wpa_s, cred, bss))
1885 0 : continue;
1886 28 : if (cred_excluded_ssid(cred, bss)) {
1887 2 : if (excluded == NULL)
1888 0 : continue;
1889 2 : if (selected == NULL) {
1890 2 : selected = cred;
1891 2 : is_excluded = 1;
1892 : }
1893 : } else {
1894 26 : if (selected == NULL || is_excluded ||
1895 0 : cred_prio_cmp(selected, cred) < 0) {
1896 26 : selected = cred;
1897 26 : is_excluded = 0;
1898 : }
1899 : }
1900 : }
1901 : }
1902 :
1903 32 : if (excluded)
1904 28 : *excluded = is_excluded;
1905 : #endif /* INTERWORKING_3GPP */
1906 32 : return selected;
1907 : }
1908 :
1909 :
1910 331 : static struct wpa_cred * interworking_credentials_available_realm(
1911 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1912 : int *excluded)
1913 : {
1914 331 : struct wpa_cred *cred, *selected = NULL;
1915 : struct nai_realm *realm;
1916 : u16 count, i;
1917 331 : int is_excluded = 0;
1918 :
1919 331 : if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1920 44 : return NULL;
1921 :
1922 287 : if (wpa_s->conf->cred == NULL)
1923 0 : return NULL;
1924 :
1925 1722 : wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1926 1722 : MACSTR, MAC2STR(bss->bssid));
1927 287 : realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1928 287 : if (realm == NULL) {
1929 0 : wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1930 0 : "Realm list from " MACSTR, MAC2STR(bss->bssid));
1931 0 : return NULL;
1932 : }
1933 :
1934 598 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1935 311 : if (cred->realm == NULL)
1936 20 : continue;
1937 :
1938 429 : for (i = 0; i < count; i++) {
1939 351 : if (!nai_realm_match(&realm[i], cred->realm))
1940 74 : continue;
1941 277 : if (nai_realm_find_eap(cred, &realm[i])) {
1942 261 : if (cred_no_required_oi_match(cred, bss))
1943 8 : continue;
1944 466 : if (!ignore_bw &&
1945 213 : cred_below_min_backhaul(wpa_s, cred, bss))
1946 20 : continue;
1947 426 : if (!ignore_bw &&
1948 193 : cred_over_max_bss_load(wpa_s, cred, bss))
1949 8 : continue;
1950 410 : if (!ignore_bw &&
1951 185 : cred_conn_capab_missing(wpa_s, cred, bss))
1952 12 : continue;
1953 213 : if (cred_excluded_ssid(cred, bss)) {
1954 6 : if (excluded == NULL)
1955 0 : continue;
1956 6 : if (selected == NULL) {
1957 6 : selected = cred;
1958 6 : is_excluded = 1;
1959 : }
1960 : } else {
1961 207 : if (selected == NULL || is_excluded ||
1962 0 : cred_prio_cmp(selected, cred) < 0)
1963 : {
1964 207 : selected = cred;
1965 207 : is_excluded = 0;
1966 : }
1967 : }
1968 213 : break;
1969 : }
1970 : }
1971 : }
1972 :
1973 287 : nai_realm_free(realm, count);
1974 :
1975 287 : if (excluded)
1976 286 : *excluded = is_excluded;
1977 :
1978 287 : return selected;
1979 : }
1980 :
1981 :
1982 243 : static struct wpa_cred * interworking_credentials_available_helper(
1983 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1984 : int *excluded)
1985 : {
1986 : struct wpa_cred *cred, *cred2;
1987 : int excluded1, excluded2;
1988 :
1989 484 : if (disallowed_bssid(wpa_s, bss->bssid) ||
1990 241 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1991 24 : wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
1992 24 : MACSTR, MAC2STR(bss->bssid));
1993 4 : return NULL;
1994 : }
1995 :
1996 239 : cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
1997 : &excluded1);
1998 239 : cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
1999 : &excluded2);
2000 244 : if (cred && cred2 &&
2001 8 : (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2002 2 : cred = cred2;
2003 2 : excluded1 = excluded2;
2004 : }
2005 239 : if (!cred) {
2006 96 : cred = cred2;
2007 96 : excluded1 = excluded2;
2008 : }
2009 :
2010 239 : cred2 = interworking_credentials_available_roaming_consortium(
2011 : wpa_s, bss, ignore_bw, &excluded2);
2012 242 : if (cred && cred2 &&
2013 3 : (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2014 3 : cred = cred2;
2015 3 : excluded1 = excluded2;
2016 : }
2017 239 : if (!cred) {
2018 84 : cred = cred2;
2019 84 : excluded1 = excluded2;
2020 : }
2021 :
2022 239 : if (excluded)
2023 194 : *excluded = excluded1;
2024 239 : return cred;
2025 : }
2026 :
2027 :
2028 186 : static struct wpa_cred * interworking_credentials_available(
2029 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2030 : {
2031 : struct wpa_cred *cred;
2032 :
2033 186 : if (excluded)
2034 154 : *excluded = 0;
2035 186 : cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2036 : excluded);
2037 186 : if (cred)
2038 129 : return cred;
2039 57 : return interworking_credentials_available_helper(wpa_s, bss, 1,
2040 : excluded);
2041 : }
2042 :
2043 :
2044 232 : int domain_name_list_contains(struct wpabuf *domain_names,
2045 : const char *domain, int exact_match)
2046 : {
2047 : const u8 *pos, *end;
2048 : size_t len;
2049 :
2050 232 : len = os_strlen(domain);
2051 232 : pos = wpabuf_head(domain_names);
2052 232 : end = pos + wpabuf_len(domain_names);
2053 :
2054 592 : while (pos + 1 < end) {
2055 285 : if (pos + 1 + pos[0] > end)
2056 0 : break;
2057 :
2058 285 : wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2059 285 : pos + 1, pos[0]);
2060 501 : if (pos[0] == len &&
2061 216 : os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2062 155 : return 1;
2063 130 : if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2064 4 : const char *ap = (const char *) (pos + 1);
2065 4 : int offset = pos[0] - len;
2066 4 : if (os_strncasecmp(domain, ap + offset, len) == 0)
2067 2 : return 1;
2068 : }
2069 :
2070 128 : pos += 1 + pos[0];
2071 : }
2072 :
2073 75 : return 0;
2074 : }
2075 :
2076 :
2077 293 : int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2078 : struct wpa_cred *cred,
2079 : struct wpabuf *domain_names)
2080 : {
2081 : size_t i;
2082 293 : int ret = -1;
2083 : #ifdef INTERWORKING_3GPP
2084 : char nai[100], *realm;
2085 :
2086 293 : char *imsi = NULL;
2087 293 : int mnc_len = 0;
2088 293 : if (cred->imsi)
2089 21 : imsi = cred->imsi;
2090 : #ifdef PCSC_FUNCS
2091 : else if (cred->pcsc && wpa_s->scard) {
2092 : if (interworking_pcsc_read_imsi(wpa_s) < 0)
2093 : return -1;
2094 : imsi = wpa_s->imsi;
2095 : mnc_len = wpa_s->mnc_len;
2096 : }
2097 : #endif /* PCSC_FUNCS */
2098 : #ifdef CONFIG_EAP_PROXY
2099 : else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2100 : imsi = wpa_s->imsi;
2101 : mnc_len = wpa_s->mnc_len;
2102 : }
2103 : #endif /* CONFIG_EAP_PROXY */
2104 293 : if (domain_names &&
2105 18 : imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2106 18 : realm = os_strchr(nai, '@');
2107 18 : if (realm)
2108 18 : realm++;
2109 18 : wpa_printf(MSG_DEBUG, "Interworking: Search for match "
2110 : "with SIM/USIM domain %s", realm);
2111 36 : if (realm &&
2112 18 : domain_name_list_contains(domain_names, realm, 1))
2113 11 : return 1;
2114 7 : if (realm)
2115 7 : ret = 0;
2116 : }
2117 : #endif /* INTERWORKING_3GPP */
2118 :
2119 282 : if (domain_names == NULL || cred->domain == NULL)
2120 105 : return ret;
2121 :
2122 234 : for (i = 0; i < cred->num_domain; i++) {
2123 177 : wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
2124 177 : "home SP FQDN %s", cred->domain[i]);
2125 177 : if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2126 120 : return 1;
2127 : }
2128 :
2129 57 : return 0;
2130 : }
2131 :
2132 :
2133 135 : static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2134 : struct wpabuf *domain_names)
2135 : {
2136 : struct wpa_cred *cred;
2137 :
2138 135 : if (domain_names == NULL || wpa_s->conf->cred == NULL)
2139 37 : return -1;
2140 :
2141 120 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2142 98 : int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2143 98 : if (res)
2144 76 : return res;
2145 : }
2146 :
2147 22 : return 0;
2148 : }
2149 :
2150 :
2151 12 : static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2152 : {
2153 : struct wpa_bss *bss;
2154 : struct wpa_ssid *ssid;
2155 :
2156 23 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2157 12 : for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2158 2 : if (wpas_network_disabled(wpa_s, ssid) ||
2159 1 : ssid->mode != WPAS_MODE_INFRA)
2160 0 : continue;
2161 2 : if (ssid->ssid_len != bss->ssid_len ||
2162 1 : os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2163 : 0)
2164 0 : continue;
2165 : /*
2166 : * TODO: Consider more accurate matching of security
2167 : * configuration similarly to what is done in events.c
2168 : */
2169 1 : return 1;
2170 : }
2171 : }
2172 :
2173 11 : return 0;
2174 : }
2175 :
2176 :
2177 20 : static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2178 : struct roaming_partner *partner,
2179 : struct wpabuf *domain_names)
2180 : {
2181 40 : wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2182 40 : partner->fqdn, partner->exact_match, partner->priority,
2183 20 : partner->country);
2184 20 : wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2185 : wpabuf_head(domain_names),
2186 : wpabuf_len(domain_names));
2187 20 : if (!domain_name_list_contains(domain_names, partner->fqdn,
2188 : partner->exact_match))
2189 10 : return 0;
2190 : /* TODO: match Country */
2191 10 : return 1;
2192 : }
2193 :
2194 :
2195 75 : static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2196 : struct wpa_bss *bss)
2197 : {
2198 : size_t i;
2199 :
2200 75 : if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2201 18 : wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2202 18 : return 128; /* cannot check preference with domain name */
2203 : }
2204 :
2205 57 : if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2206 : {
2207 25 : wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2208 25 : return 0; /* max preference for home SP network */
2209 : }
2210 :
2211 42 : for (i = 0; i < cred->num_roaming_partner; i++) {
2212 20 : if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2213 20 : bss->anqp->domain_name)) {
2214 10 : wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2215 10 : cred->roaming_partner[i].priority);
2216 10 : return cred->roaming_partner[i].priority;
2217 : }
2218 : }
2219 :
2220 22 : wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2221 22 : return 128;
2222 : }
2223 :
2224 :
2225 47 : static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2226 : struct wpa_bss *selected,
2227 : struct wpa_cred *cred)
2228 : {
2229 : struct wpa_bss *bss;
2230 : u8 best_prio, prio;
2231 : struct wpa_cred *cred2;
2232 :
2233 : /*
2234 : * Check if any other BSS is operated by a more preferred roaming
2235 : * partner.
2236 : */
2237 :
2238 47 : best_prio = roaming_prio(wpa_s, cred, selected);
2239 329 : wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2240 282 : MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2241 : cred->id);
2242 :
2243 126 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2244 79 : if (bss == selected)
2245 47 : continue;
2246 32 : cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2247 32 : if (!cred2)
2248 4 : continue;
2249 28 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2250 0 : continue;
2251 28 : prio = roaming_prio(wpa_s, cred2, bss);
2252 196 : wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2253 168 : MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2254 : cred2->id);
2255 28 : if (prio < best_prio) {
2256 : int bh1, bh2, load1, load2, conn1, conn2;
2257 8 : bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2258 8 : load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2259 8 : conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2260 8 : bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2261 8 : load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2262 8 : conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2263 8 : wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2264 : bh1, load1, conn1, bh2, load2, conn2);
2265 8 : if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2266 6 : wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2267 6 : best_prio = prio;
2268 6 : selected = bss;
2269 : }
2270 : }
2271 : }
2272 :
2273 47 : return selected;
2274 : }
2275 :
2276 :
2277 117 : static void interworking_select_network(struct wpa_supplicant *wpa_s)
2278 : {
2279 117 : struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2280 117 : struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2281 117 : unsigned int count = 0;
2282 : const char *type;
2283 : int res;
2284 117 : struct wpa_cred *cred, *selected_cred = NULL;
2285 117 : struct wpa_cred *selected_home_cred = NULL;
2286 117 : struct wpa_cred *selected2_cred = NULL;
2287 117 : struct wpa_cred *selected2_home_cred = NULL;
2288 :
2289 117 : wpa_s->network_select = 0;
2290 :
2291 117 : wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2292 117 : wpa_s->auto_select);
2293 271 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2294 154 : int excluded = 0;
2295 : int bh, bss_load, conn_capab;
2296 154 : cred = interworking_credentials_available(wpa_s, bss,
2297 : &excluded);
2298 154 : if (!cred)
2299 42 : continue;
2300 135 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2301 : /*
2302 : * We currently support only HS 2.0 networks and those
2303 : * are required to use WPA2-Enterprise.
2304 : */
2305 0 : wpa_printf(MSG_DEBUG, "Interworking: Credential match "
2306 : "with " MACSTR " but network does not use "
2307 0 : "RSN", MAC2STR(bss->bssid));
2308 0 : continue;
2309 : }
2310 135 : if (!excluded)
2311 131 : count++;
2312 270 : res = interworking_home_sp(wpa_s, bss->anqp ?
2313 135 : bss->anqp->domain_name : NULL);
2314 135 : if (res > 0)
2315 52 : type = "home";
2316 83 : else if (res == 0)
2317 22 : type = "roaming";
2318 : else
2319 61 : type = "unknown";
2320 135 : bh = cred_below_min_backhaul(wpa_s, cred, bss);
2321 135 : bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2322 135 : conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2323 1080 : wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2324 135 : excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2325 810 : MAC2STR(bss->bssid), type,
2326 : bh ? " below_min_backhaul=1" : "",
2327 : bss_load ? " over_max_bss_load=1" : "",
2328 : conn_capab ? " conn_capab_missing=1" : "",
2329 : cred->id, cred->priority, cred->sp_priority);
2330 135 : if (excluded)
2331 4 : continue;
2332 192 : if (wpa_s->auto_select ||
2333 62 : (wpa_s->conf->auto_interworking &&
2334 : wpa_s->auto_network_select)) {
2335 71 : if (bh || bss_load || conn_capab) {
2336 18 : if (selected2_cred == NULL ||
2337 3 : cred_prio_cmp(cred, selected2_cred) > 0) {
2338 12 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2339 12 : selected2 = bss;
2340 12 : selected2_cred = cred;
2341 : }
2342 30 : if (res > 0 &&
2343 1 : (selected2_home_cred == NULL ||
2344 1 : cred_prio_cmp(cred, selected2_home_cred) >
2345 : 0)) {
2346 5 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2347 5 : selected2_home = bss;
2348 5 : selected2_home_cred = cred;
2349 : }
2350 : } else {
2351 71 : if (selected_cred == NULL ||
2352 15 : cred_prio_cmp(cred, selected_cred) > 0) {
2353 44 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2354 44 : selected = bss;
2355 44 : selected_cred = cred;
2356 : }
2357 56 : if (res > 0 &&
2358 0 : (selected_home_cred == NULL ||
2359 0 : cred_prio_cmp(cred, selected_home_cred) >
2360 : 0)) {
2361 18 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2362 18 : selected_home = bss;
2363 18 : selected_home_cred = cred;
2364 : }
2365 : }
2366 : }
2367 : }
2368 :
2369 117 : if (selected_home && selected_home != selected &&
2370 2 : selected_home_cred &&
2371 2 : (selected_cred == NULL ||
2372 2 : cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2373 : /* Prefer network operated by the Home SP */
2374 2 : wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2375 2 : selected = selected_home;
2376 2 : selected_cred = selected_home_cred;
2377 : }
2378 :
2379 117 : if (!selected) {
2380 76 : if (selected2_home) {
2381 2 : wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2382 2 : selected = selected2_home;
2383 2 : selected_cred = selected2_home_cred;
2384 74 : } else if (selected2) {
2385 4 : wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2386 4 : selected = selected2;
2387 4 : selected_cred = selected2_cred;
2388 : }
2389 : }
2390 :
2391 117 : if (count == 0) {
2392 : /*
2393 : * No matching network was found based on configured
2394 : * credentials. Check whether any of the enabled network blocks
2395 : * have matching APs.
2396 : */
2397 12 : if (interworking_find_network_match(wpa_s)) {
2398 1 : wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
2399 : "match for enabled network configurations");
2400 1 : if (wpa_s->auto_select)
2401 1 : interworking_reconnect(wpa_s);
2402 1 : return;
2403 : }
2404 :
2405 11 : if (wpa_s->auto_network_select) {
2406 0 : wpa_printf(MSG_DEBUG, "Interworking: Continue "
2407 : "scanning after ANQP fetch");
2408 0 : wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2409 : 0);
2410 0 : return;
2411 : }
2412 :
2413 11 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2414 : "with matching credentials found");
2415 : }
2416 :
2417 116 : if (selected) {
2418 282 : wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2419 282 : MAC2STR(selected->bssid));
2420 47 : selected = pick_best_roaming_partner(wpa_s, selected,
2421 : selected_cred);
2422 282 : wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2423 : " (after best roaming partner selection)",
2424 282 : MAC2STR(selected->bssid));
2425 282 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2426 282 : MAC2STR(selected->bssid));
2427 47 : interworking_connect(wpa_s, selected);
2428 : }
2429 : }
2430 :
2431 :
2432 : static struct wpa_bss_anqp *
2433 88 : interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2434 : {
2435 : struct wpa_bss *other;
2436 :
2437 88 : if (is_zero_ether_addr(bss->hessid))
2438 58 : return NULL; /* Cannot be in the same homegenous ESS */
2439 :
2440 67 : dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2441 38 : if (other == bss)
2442 29 : continue;
2443 9 : if (other->anqp == NULL)
2444 3 : continue;
2445 11 : if (other->anqp->roaming_consortium == NULL &&
2446 6 : other->anqp->nai_realm == NULL &&
2447 1 : other->anqp->anqp_3gpp == NULL &&
2448 0 : other->anqp->domain_name == NULL)
2449 0 : continue;
2450 6 : if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2451 0 : continue;
2452 6 : if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2453 5 : continue;
2454 2 : if (bss->ssid_len != other->ssid_len ||
2455 1 : os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2456 0 : continue;
2457 :
2458 12 : wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
2459 : "already fetched BSSID " MACSTR " and " MACSTR,
2460 12 : MAC2STR(other->bssid), MAC2STR(bss->bssid));
2461 1 : other->anqp->users++;
2462 1 : return other->anqp;
2463 : }
2464 :
2465 29 : return NULL;
2466 : }
2467 :
2468 :
2469 278 : static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2470 : {
2471 : struct wpa_bss *bss;
2472 278 : int found = 0;
2473 : const u8 *ie;
2474 :
2475 556 : wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2476 : "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2477 278 : wpa_s->fetch_anqp_in_progress,
2478 278 : wpa_s->fetch_osu_icon_in_progress);
2479 :
2480 278 : if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2481 0 : wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2482 0 : return;
2483 : }
2484 :
2485 278 : if (wpa_s->fetch_osu_icon_in_progress) {
2486 0 : wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2487 0 : hs20_next_osu_icon(wpa_s);
2488 0 : return;
2489 : }
2490 :
2491 476 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2492 353 : if (!(bss->caps & IEEE80211_CAP_ESS))
2493 0 : continue;
2494 353 : ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2495 353 : if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2496 5 : continue; /* AP does not support Interworking */
2497 695 : if (disallowed_bssid(wpa_s, bss->bssid) ||
2498 347 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2499 2 : continue; /* Disallowed BSS */
2500 :
2501 346 : if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2502 156 : if (bss->anqp == NULL) {
2503 88 : bss->anqp = interworking_match_anqp_info(wpa_s,
2504 : bss);
2505 88 : if (bss->anqp) {
2506 : /* Shared data already fetched */
2507 1 : continue;
2508 : }
2509 87 : bss->anqp = wpa_bss_anqp_alloc();
2510 87 : if (bss->anqp == NULL)
2511 0 : break;
2512 : }
2513 155 : found++;
2514 155 : bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2515 930 : wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2516 930 : MACSTR, MAC2STR(bss->bssid));
2517 155 : interworking_anqp_send_req(wpa_s, bss);
2518 155 : break;
2519 : }
2520 : }
2521 :
2522 278 : if (found == 0) {
2523 123 : if (wpa_s->fetch_osu_info) {
2524 1 : if (wpa_s->num_prov_found == 0 &&
2525 0 : wpa_s->num_osu_scans < 3) {
2526 0 : wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2527 0 : hs20_start_osu_scan(wpa_s);
2528 0 : return;
2529 : }
2530 1 : wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2531 1 : hs20_osu_icon_fetch(wpa_s);
2532 1 : return;
2533 : }
2534 122 : wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2535 122 : wpa_s->fetch_anqp_in_progress = 0;
2536 122 : if (wpa_s->network_select)
2537 117 : interworking_select_network(wpa_s);
2538 : }
2539 : }
2540 :
2541 :
2542 123 : void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2543 : {
2544 : struct wpa_bss *bss;
2545 :
2546 285 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2547 162 : bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2548 :
2549 123 : wpa_s->fetch_anqp_in_progress = 1;
2550 123 : interworking_next_anqp_fetch(wpa_s);
2551 123 : }
2552 :
2553 :
2554 5 : int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2555 : {
2556 5 : if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2557 0 : return 0;
2558 :
2559 5 : wpa_s->network_select = 0;
2560 5 : wpa_s->fetch_all_anqp = 1;
2561 5 : wpa_s->fetch_osu_info = 0;
2562 :
2563 5 : interworking_start_fetch_anqp(wpa_s);
2564 :
2565 5 : return 0;
2566 : }
2567 :
2568 :
2569 2019 : void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2570 : {
2571 2019 : if (!wpa_s->fetch_anqp_in_progress)
2572 4038 : return;
2573 :
2574 0 : wpa_s->fetch_anqp_in_progress = 0;
2575 : }
2576 :
2577 :
2578 19 : int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2579 : u16 info_ids[], size_t num_ids, u32 subtypes)
2580 : {
2581 : struct wpabuf *buf;
2582 19 : struct wpabuf *hs20_buf = NULL;
2583 19 : int ret = 0;
2584 : int freq;
2585 : struct wpa_bss *bss;
2586 : int res;
2587 :
2588 19 : freq = wpa_s->assoc_freq;
2589 19 : bss = wpa_bss_get_bssid(wpa_s, dst);
2590 19 : if (bss) {
2591 19 : wpa_bss_anqp_unshare_alloc(bss);
2592 19 : freq = bss->freq;
2593 : }
2594 19 : if (freq <= 0)
2595 0 : return -1;
2596 :
2597 133 : wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
2598 114 : MAC2STR(dst), (unsigned int) num_ids);
2599 :
2600 : #ifdef CONFIG_HS20
2601 19 : if (subtypes != 0) {
2602 1 : hs20_buf = wpabuf_alloc(100);
2603 1 : if (hs20_buf == NULL)
2604 0 : return -1;
2605 1 : hs20_put_anqp_req(subtypes, NULL, 0, hs20_buf);
2606 : }
2607 : #endif /* CONFIG_HS20 */
2608 :
2609 19 : buf = anqp_build_req(info_ids, num_ids, hs20_buf);
2610 19 : wpabuf_free(hs20_buf);
2611 19 : if (buf == NULL)
2612 0 : return -1;
2613 :
2614 19 : res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2615 19 : if (res < 0) {
2616 0 : wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
2617 0 : wpabuf_free(buf);
2618 0 : ret = -1;
2619 : } else
2620 19 : wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
2621 : "%u", res);
2622 :
2623 19 : return ret;
2624 : }
2625 :
2626 :
2627 678 : static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2628 : struct wpa_bss *bss, const u8 *sa,
2629 : u16 info_id,
2630 : const u8 *data, size_t slen)
2631 : {
2632 678 : const u8 *pos = data;
2633 678 : struct wpa_bss_anqp *anqp = NULL;
2634 : #ifdef CONFIG_HS20
2635 : u8 type;
2636 : #endif /* CONFIG_HS20 */
2637 :
2638 678 : if (bss)
2639 678 : anqp = bss->anqp;
2640 :
2641 678 : switch (info_id) {
2642 : case ANQP_CAPABILITY_LIST:
2643 930 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2644 930 : " ANQP Capability list", MAC2STR(sa));
2645 155 : break;
2646 : case ANQP_VENUE_NAME:
2647 54 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2648 54 : " Venue Name", MAC2STR(sa));
2649 9 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2650 9 : if (anqp) {
2651 9 : wpabuf_free(anqp->venue_name);
2652 9 : anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2653 : }
2654 9 : break;
2655 : case ANQP_NETWORK_AUTH_TYPE:
2656 12 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2657 : " Network Authentication Type information",
2658 12 : MAC2STR(sa));
2659 2 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2660 : "Type", pos, slen);
2661 2 : if (anqp) {
2662 2 : wpabuf_free(anqp->network_auth_type);
2663 2 : anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2664 : }
2665 2 : break;
2666 : case ANQP_ROAMING_CONSORTIUM:
2667 108 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2668 108 : " Roaming Consortium list", MAC2STR(sa));
2669 18 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2670 : pos, slen);
2671 18 : if (anqp) {
2672 18 : wpabuf_free(anqp->roaming_consortium);
2673 18 : anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2674 : }
2675 18 : break;
2676 : case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2677 12 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2678 : " IP Address Type Availability information",
2679 12 : MAC2STR(sa));
2680 2 : wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2681 : pos, slen);
2682 2 : if (anqp) {
2683 2 : wpabuf_free(anqp->ip_addr_type_availability);
2684 2 : anqp->ip_addr_type_availability =
2685 2 : wpabuf_alloc_copy(pos, slen);
2686 : }
2687 2 : break;
2688 : case ANQP_NAI_REALM:
2689 840 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2690 840 : " NAI Realm list", MAC2STR(sa));
2691 140 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2692 140 : if (anqp) {
2693 140 : wpabuf_free(anqp->nai_realm);
2694 140 : anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2695 : }
2696 140 : break;
2697 : case ANQP_3GPP_CELLULAR_NETWORK:
2698 144 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2699 144 : " 3GPP Cellular Network information", MAC2STR(sa));
2700 24 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2701 : pos, slen);
2702 24 : if (anqp) {
2703 24 : wpabuf_free(anqp->anqp_3gpp);
2704 24 : anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2705 : }
2706 24 : break;
2707 : case ANQP_DOMAIN_NAME:
2708 654 : wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2709 654 : " Domain Name list", MAC2STR(sa));
2710 109 : wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2711 109 : if (anqp) {
2712 109 : wpabuf_free(anqp->domain_name);
2713 109 : anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2714 : }
2715 109 : break;
2716 : case ANQP_VENDOR_SPECIFIC:
2717 219 : if (slen < 3)
2718 0 : return;
2719 :
2720 219 : switch (WPA_GET_BE24(pos)) {
2721 : #ifdef CONFIG_HS20
2722 : case OUI_WFA:
2723 219 : pos += 3;
2724 219 : slen -= 3;
2725 :
2726 219 : if (slen < 1)
2727 0 : return;
2728 219 : type = *pos++;
2729 219 : slen--;
2730 :
2731 219 : switch (type) {
2732 : case HS20_ANQP_OUI_TYPE:
2733 219 : hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
2734 : slen);
2735 219 : break;
2736 : default:
2737 0 : wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
2738 : "vendor type %u", type);
2739 0 : break;
2740 : }
2741 219 : break;
2742 : #endif /* CONFIG_HS20 */
2743 : default:
2744 0 : wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
2745 : "vendor-specific ANQP OUI %06x",
2746 : WPA_GET_BE24(pos));
2747 0 : return;
2748 : }
2749 219 : break;
2750 : default:
2751 0 : wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
2752 : "%u", info_id);
2753 0 : break;
2754 : }
2755 : }
2756 :
2757 :
2758 179 : void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2759 : enum gas_query_result result,
2760 : const struct wpabuf *adv_proto,
2761 : const struct wpabuf *resp, u16 status_code)
2762 : {
2763 179 : struct wpa_supplicant *wpa_s = ctx;
2764 : const u8 *pos;
2765 : const u8 *end;
2766 : u16 info_id;
2767 : u16 slen;
2768 179 : struct wpa_bss *bss = NULL, *tmp;
2769 :
2770 1253 : wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2771 : " dialog_token=%u result=%d status_code=%u",
2772 1074 : MAC2STR(dst), dialog_token, result, status_code);
2773 179 : if (result != GAS_QUERY_SUCCESS) {
2774 11 : if (wpa_s->fetch_osu_icon_in_progress)
2775 0 : hs20_icon_fetch_failed(wpa_s);
2776 11 : return;
2777 : }
2778 :
2779 168 : pos = wpabuf_head(adv_proto);
2780 336 : if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2781 336 : pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2782 0 : wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
2783 : "Protocol in response");
2784 0 : if (wpa_s->fetch_osu_icon_in_progress)
2785 0 : hs20_icon_fetch_failed(wpa_s);
2786 0 : return;
2787 : }
2788 :
2789 : /*
2790 : * If possible, select the BSS entry based on which BSS entry was used
2791 : * for the request. This can help in cases where multiple BSS entries
2792 : * may exist for the same AP.
2793 : */
2794 218 : dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2795 372 : if (tmp == wpa_s->interworking_gas_bss &&
2796 162 : os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2797 160 : bss = tmp;
2798 160 : break;
2799 : }
2800 : }
2801 168 : if (bss == NULL)
2802 8 : bss = wpa_bss_get_bssid(wpa_s, dst);
2803 :
2804 168 : pos = wpabuf_head(resp);
2805 168 : end = pos + wpabuf_len(resp);
2806 :
2807 1014 : while (pos < end) {
2808 679 : if (pos + 4 > end) {
2809 1 : wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
2810 1 : break;
2811 : }
2812 678 : info_id = WPA_GET_LE16(pos);
2813 678 : pos += 2;
2814 678 : slen = WPA_GET_LE16(pos);
2815 678 : pos += 2;
2816 678 : if (pos + slen > end) {
2817 0 : wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
2818 : "for Info ID %u", info_id);
2819 0 : break;
2820 : }
2821 678 : interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2822 : slen);
2823 678 : pos += slen;
2824 : }
2825 :
2826 168 : hs20_notify_parse_done(wpa_s);
2827 : }
2828 :
2829 :
2830 116 : static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2831 : struct wpa_scan_results *scan_res)
2832 : {
2833 116 : wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
2834 : "ANQP fetch");
2835 116 : interworking_start_fetch_anqp(wpa_s);
2836 116 : }
2837 :
2838 :
2839 116 : int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2840 : int *freqs)
2841 : {
2842 116 : interworking_stop_fetch_anqp(wpa_s);
2843 116 : wpa_s->network_select = 1;
2844 116 : wpa_s->auto_network_select = 0;
2845 116 : wpa_s->auto_select = !!auto_select;
2846 116 : wpa_s->fetch_all_anqp = 0;
2847 116 : wpa_s->fetch_osu_info = 0;
2848 116 : wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
2849 : "selection");
2850 116 : wpa_s->scan_res_handler = interworking_scan_res_handler;
2851 116 : wpa_s->normal_scans = 0;
2852 116 : wpa_s->scan_req = MANUAL_SCAN_REQ;
2853 116 : os_free(wpa_s->manual_scan_freqs);
2854 116 : wpa_s->manual_scan_freqs = freqs;
2855 116 : wpa_s->after_wps = 0;
2856 116 : wpa_s->known_wps_freq = 0;
2857 116 : wpa_supplicant_req_scan(wpa_s, 0, 0);
2858 :
2859 116 : return 0;
2860 : }
2861 :
2862 :
2863 8 : static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2864 : enum gas_query_result result,
2865 : const struct wpabuf *adv_proto,
2866 : const struct wpabuf *resp, u16 status_code)
2867 : {
2868 8 : struct wpa_supplicant *wpa_s = ctx;
2869 : struct wpabuf *n;
2870 :
2871 63 : wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2872 : " dialog_token=%d status_code=%d resp_len=%d",
2873 48 : MAC2STR(addr), dialog_token, status_code,
2874 7 : resp ? (int) wpabuf_len(resp) : -1);
2875 8 : if (!resp)
2876 1 : return;
2877 :
2878 7 : n = wpabuf_dup(resp);
2879 7 : if (n == NULL)
2880 0 : return;
2881 7 : wpabuf_free(wpa_s->prev_gas_resp);
2882 7 : wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2883 7 : os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2884 7 : wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2885 7 : wpa_s->last_gas_resp = n;
2886 7 : os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2887 7 : wpa_s->last_gas_dialog_token = dialog_token;
2888 : }
2889 :
2890 :
2891 8 : int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2892 : const struct wpabuf *adv_proto,
2893 : const struct wpabuf *query)
2894 : {
2895 : struct wpabuf *buf;
2896 8 : int ret = 0;
2897 : int freq;
2898 : struct wpa_bss *bss;
2899 : int res;
2900 : size_t len;
2901 8 : u8 query_resp_len_limit = 0, pame_bi = 0;
2902 :
2903 8 : freq = wpa_s->assoc_freq;
2904 8 : bss = wpa_bss_get_bssid(wpa_s, dst);
2905 8 : if (bss)
2906 8 : freq = bss->freq;
2907 8 : if (freq <= 0)
2908 0 : return -1;
2909 :
2910 48 : wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2911 48 : MAC2STR(dst), freq);
2912 8 : wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2913 8 : wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2914 :
2915 8 : len = 3 + wpabuf_len(adv_proto) + 2;
2916 8 : if (query)
2917 8 : len += wpabuf_len(query);
2918 8 : buf = gas_build_initial_req(0, len);
2919 8 : if (buf == NULL)
2920 0 : return -1;
2921 :
2922 : /* Advertisement Protocol IE */
2923 8 : wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2924 8 : wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2925 8 : wpabuf_put_u8(buf, (query_resp_len_limit & 0x7f) |
2926 : (pame_bi ? 0x80 : 0));
2927 8 : wpabuf_put_buf(buf, adv_proto);
2928 :
2929 : /* GAS Query */
2930 8 : if (query) {
2931 8 : wpabuf_put_le16(buf, wpabuf_len(query));
2932 8 : wpabuf_put_buf(buf, query);
2933 : } else
2934 0 : wpabuf_put_le16(buf, 0);
2935 :
2936 8 : res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2937 8 : if (res < 0) {
2938 0 : wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2939 0 : wpabuf_free(buf);
2940 0 : ret = -1;
2941 : } else
2942 8 : wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "
2943 : "%u", res);
2944 :
2945 8 : return ret;
2946 : }
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