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 57 : static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 : {
59 57 : if (a->priority > b->priority)
60 10 : return 1;
61 47 : if (a->priority < b->priority)
62 5 : return -1;
63 50 : if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 8 : os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 34 : return 0;
66 8 : if (a->sp_priority < b->sp_priority)
67 3 : return 1;
68 5 : if (a->sp_priority > b->sp_priority)
69 3 : return -1;
70 2 : return 0;
71 : }
72 :
73 :
74 155 : static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 : {
76 : unsigned int tried;
77 :
78 155 : if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
79 4 : wpa_supplicant_cancel_sched_scan(wpa_s);
80 4 : wpa_s->own_disconnect_req = 1;
81 4 : wpa_supplicant_deauthenticate(wpa_s,
82 : WLAN_REASON_DEAUTH_LEAVING);
83 : }
84 155 : wpa_s->disconnected = 0;
85 155 : wpa_s->reassociate = 1;
86 155 : tried = wpa_s->interworking_fast_assoc_tried;
87 155 : wpa_s->interworking_fast_assoc_tried = 1;
88 :
89 155 : if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
90 289 : return;
91 :
92 21 : wpa_s->interworking_fast_assoc_tried = 0;
93 21 : wpa_supplicant_req_scan(wpa_s, 0, 0);
94 : }
95 :
96 :
97 374 : static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
98 : struct wpabuf *extra)
99 : {
100 : struct wpabuf *buf;
101 : size_t i;
102 : u8 *len_pos;
103 :
104 748 : buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 374 : (extra ? wpabuf_len(extra) : 0));
106 374 : if (buf == NULL)
107 2 : return NULL;
108 :
109 372 : len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
110 1660 : for (i = 0; i < num_ids; i++)
111 1288 : wpabuf_put_le16(buf, info_ids[i]);
112 372 : gas_anqp_set_element_len(buf, len_pos);
113 372 : if (extra)
114 326 : wpabuf_put_buf(buf, extra);
115 :
116 372 : gas_anqp_set_len(buf);
117 :
118 372 : return buf;
119 : }
120 :
121 :
122 324 : static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
123 : u8 dialog_token,
124 : enum gas_query_result result,
125 : const struct wpabuf *adv_proto,
126 : const struct wpabuf *resp,
127 : u16 status_code)
128 : {
129 324 : struct wpa_supplicant *wpa_s = ctx;
130 :
131 2268 : wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
132 : " dialog_token=%u result=%d status_code=%u",
133 1944 : MAC2STR(dst), dialog_token, result, status_code);
134 324 : anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
135 : status_code);
136 324 : interworking_next_anqp_fetch(wpa_s);
137 324 : }
138 :
139 :
140 276 : static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
141 : {
142 : struct wpa_cred *cred;
143 :
144 523 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
145 292 : if (cred->roaming_consortium_len)
146 38 : return 1;
147 254 : if (cred->required_roaming_consortium_len)
148 7 : return 1;
149 : }
150 231 : return 0;
151 : }
152 :
153 :
154 276 : static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
155 : {
156 : struct wpa_cred *cred;
157 :
158 531 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
159 289 : if (cred->pcsc || cred->imsi)
160 34 : return 1;
161 : }
162 242 : return 0;
163 : }
164 :
165 :
166 276 : static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
167 : {
168 : struct wpa_cred *cred;
169 :
170 340 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
171 281 : if (cred->pcsc || cred->imsi)
172 29 : continue;
173 252 : if (!cred->eap_method)
174 207 : return 1;
175 45 : if (cred->realm && cred->roaming_consortium_len == 0)
176 10 : return 1;
177 : }
178 59 : return 0;
179 : }
180 :
181 :
182 276 : static int cred_with_domain(struct wpa_supplicant *wpa_s)
183 : {
184 : struct wpa_cred *cred;
185 :
186 335 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
187 364 : if (cred->domain || cred->pcsc || cred->imsi ||
188 79 : cred->roaming_partner)
189 226 : return 1;
190 : }
191 50 : return 0;
192 : }
193 :
194 :
195 : #ifdef CONFIG_HS20
196 :
197 274 : static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
198 : {
199 : struct wpa_cred *cred;
200 :
201 534 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
202 566 : if (cred->min_dl_bandwidth_home ||
203 544 : cred->min_ul_bandwidth_home ||
204 532 : cred->min_dl_bandwidth_roaming ||
205 260 : cred->min_ul_bandwidth_roaming)
206 34 : return 1;
207 : }
208 240 : return 0;
209 : }
210 :
211 :
212 274 : static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
213 : {
214 : struct wpa_cred *cred;
215 :
216 554 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
217 294 : if (cred->num_req_conn_capab)
218 14 : return 1;
219 : }
220 260 : return 0;
221 : }
222 :
223 : #endif /* CONFIG_HS20 */
224 :
225 :
226 45 : static int additional_roaming_consortiums(struct wpa_bss *bss)
227 : {
228 : const u8 *ie;
229 45 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
230 45 : if (ie == NULL || ie[1] == 0)
231 3 : return 0;
232 42 : return ie[2]; /* Number of ANQP OIs */
233 : }
234 :
235 :
236 330 : static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
237 : {
238 330 : struct wpa_supplicant *wpa_s = eloop_ctx;
239 330 : interworking_next_anqp_fetch(wpa_s);
240 330 : }
241 :
242 :
243 328 : static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
244 : struct wpa_bss *bss)
245 : {
246 : struct wpabuf *buf;
247 328 : int ret = 0;
248 : int res;
249 : u16 info_ids[8];
250 328 : size_t num_info_ids = 0;
251 328 : struct wpabuf *extra = NULL;
252 328 : int all = wpa_s->fetch_all_anqp;
253 :
254 1968 : wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
255 1968 : MAC2STR(bss->bssid));
256 328 : wpa_s->interworking_gas_bss = bss;
257 :
258 328 : info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
259 328 : if (all) {
260 52 : info_ids[num_info_ids++] = ANQP_VENUE_NAME;
261 52 : info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
262 : }
263 373 : if (all || (cred_with_roaming_consortium(wpa_s) &&
264 45 : additional_roaming_consortiums(bss)))
265 88 : info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
266 328 : if (all)
267 52 : info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
268 328 : if (all || cred_with_nai_realm(wpa_s))
269 269 : info_ids[num_info_ids++] = ANQP_NAI_REALM;
270 328 : if (all || cred_with_3gpp(wpa_s)) {
271 86 : info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
272 86 : wpa_supplicant_scard_init(wpa_s, NULL);
273 : }
274 328 : if (all || cred_with_domain(wpa_s))
275 278 : info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
276 328 : wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
277 : (u8 *) info_ids, num_info_ids * 2);
278 :
279 : #ifdef CONFIG_HS20
280 328 : if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
281 : u8 *len_pos;
282 :
283 327 : extra = wpabuf_alloc(100);
284 327 : if (!extra)
285 1 : return -1;
286 :
287 326 : len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
288 326 : wpabuf_put_be24(extra, OUI_WFA);
289 326 : wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
290 326 : wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
291 326 : wpabuf_put_u8(extra, 0); /* Reserved */
292 326 : wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
293 326 : if (all)
294 52 : wpabuf_put_u8(extra,
295 : HS20_STYPE_OPERATOR_FRIENDLY_NAME);
296 326 : if (all || cred_with_min_backhaul(wpa_s))
297 86 : wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
298 326 : if (all || cred_with_conn_capab(wpa_s))
299 66 : wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
300 326 : if (all)
301 52 : wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
302 326 : if (all)
303 52 : wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
304 326 : gas_anqp_set_element_len(extra, len_pos);
305 : }
306 : #endif /* CONFIG_HS20 */
307 :
308 327 : buf = anqp_build_req(info_ids, num_info_ids, extra);
309 327 : wpabuf_free(extra);
310 327 : if (buf == NULL)
311 1 : return -1;
312 :
313 326 : res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
314 : interworking_anqp_resp_cb, wpa_s);
315 326 : if (res < 0) {
316 1 : wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
317 1 : wpabuf_free(buf);
318 1 : ret = -1;
319 1 : eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
320 : NULL);
321 : } else
322 325 : wpa_msg(wpa_s, MSG_DEBUG,
323 : "ANQP: Query started with dialog token %u", res);
324 :
325 326 : return ret;
326 : }
327 :
328 :
329 : struct nai_realm_eap {
330 : u8 method;
331 : u8 inner_method;
332 : enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
333 : u8 cred_type;
334 : u8 tunneled_cred_type;
335 : };
336 :
337 : struct nai_realm {
338 : u8 encoding;
339 : char *realm;
340 : u8 eap_count;
341 : struct nai_realm_eap *eap;
342 : };
343 :
344 :
345 607 : static void nai_realm_free(struct nai_realm *realms, u16 count)
346 : {
347 : u16 i;
348 :
349 607 : if (realms == NULL)
350 607 : return;
351 1659 : for (i = 0; i < count; i++) {
352 1052 : os_free(realms[i].eap);
353 1052 : os_free(realms[i].realm);
354 : }
355 607 : os_free(realms);
356 : }
357 :
358 :
359 1048 : static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
360 : const u8 *end)
361 : {
362 : u8 elen, auth_count, a;
363 : const u8 *e_end;
364 :
365 1048 : if (end - pos < 3) {
366 2 : wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
367 2 : return NULL;
368 : }
369 :
370 1046 : elen = *pos++;
371 1046 : if (elen > end - pos || elen < 2) {
372 4 : wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
373 4 : return NULL;
374 : }
375 1042 : e_end = pos + elen;
376 1042 : e->method = *pos++;
377 1042 : auth_count = *pos++;
378 2084 : wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
379 1042 : elen, e->method, auth_count);
380 :
381 2562 : for (a = 0; a < auth_count; a++) {
382 : u8 id, len;
383 :
384 1526 : if (end - pos < 2) {
385 2 : wpa_printf(MSG_DEBUG,
386 : "No room for Authentication Parameter subfield header");
387 2 : return NULL;
388 : }
389 :
390 1524 : id = *pos++;
391 1524 : len = *pos++;
392 1524 : if (len > end - pos) {
393 4 : wpa_printf(MSG_DEBUG,
394 : "No room for Authentication Parameter subfield");
395 4 : return NULL;
396 : }
397 :
398 1520 : switch (id) {
399 : case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
400 509 : if (len < 1)
401 2 : break;
402 507 : e->inner_non_eap = *pos;
403 507 : if (e->method != EAP_TYPE_TTLS)
404 2 : break;
405 505 : switch (*pos) {
406 : case NAI_REALM_INNER_NON_EAP_PAP:
407 18 : wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
408 18 : break;
409 : case NAI_REALM_INNER_NON_EAP_CHAP:
410 6 : wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
411 6 : break;
412 : case NAI_REALM_INNER_NON_EAP_MSCHAP:
413 6 : wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
414 6 : break;
415 : case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
416 473 : wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
417 473 : break;
418 : }
419 505 : break;
420 : case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
421 52 : if (len < 1)
422 2 : break;
423 50 : e->inner_method = *pos;
424 50 : wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
425 50 : e->inner_method);
426 50 : break;
427 : case NAI_REALM_EAP_AUTH_CRED_TYPE:
428 943 : if (len < 1)
429 2 : break;
430 941 : e->cred_type = *pos;
431 941 : wpa_printf(MSG_DEBUG, "Credential Type: %u",
432 941 : e->cred_type);
433 941 : break;
434 : case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
435 8 : if (len < 1)
436 2 : break;
437 6 : e->tunneled_cred_type = *pos;
438 6 : wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
439 6 : "Type: %u", e->tunneled_cred_type);
440 6 : break;
441 : default:
442 8 : wpa_printf(MSG_DEBUG, "Unsupported Authentication "
443 : "Parameter: id=%u len=%u", id, len);
444 8 : wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
445 : "Value", pos, len);
446 8 : break;
447 : }
448 :
449 1520 : pos += len;
450 : }
451 :
452 1036 : return e_end;
453 : }
454 :
455 :
456 1048 : static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
457 : const u8 *end)
458 : {
459 : u16 len;
460 : const u8 *f_end;
461 : u8 realm_len, e;
462 :
463 1048 : if (end - pos < 4) {
464 2 : wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
465 : "fixed fields");
466 2 : return NULL;
467 : }
468 :
469 1046 : len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
470 1046 : pos += 2;
471 1046 : if (len > end - pos || len < 3) {
472 4 : wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
473 : "(len=%u; left=%u)",
474 4 : len, (unsigned int) (end - pos));
475 4 : return NULL;
476 : }
477 1042 : f_end = pos + len;
478 :
479 1042 : r->encoding = *pos++;
480 1042 : realm_len = *pos++;
481 1042 : if (realm_len > f_end - pos) {
482 4 : wpa_printf(MSG_DEBUG, "No room for NAI Realm "
483 : "(len=%u; left=%u)",
484 4 : realm_len, (unsigned int) (f_end - pos));
485 4 : return NULL;
486 : }
487 1038 : wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
488 1038 : r->realm = dup_binstr(pos, realm_len);
489 1038 : if (r->realm == NULL)
490 1 : return NULL;
491 1037 : pos += realm_len;
492 :
493 1037 : if (f_end - pos < 1) {
494 2 : wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
495 2 : return NULL;
496 : }
497 1035 : r->eap_count = *pos++;
498 1035 : wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
499 1035 : if (r->eap_count * 3 > f_end - pos) {
500 4 : wpa_printf(MSG_DEBUG, "No room for EAP Methods");
501 4 : return NULL;
502 : }
503 1031 : r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
504 1031 : if (r->eap == NULL)
505 1 : return NULL;
506 :
507 2066 : for (e = 0; e < r->eap_count; e++) {
508 1048 : pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
509 1048 : if (pos == NULL)
510 12 : return NULL;
511 : }
512 :
513 1018 : return f_end;
514 : }
515 :
516 :
517 614 : static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
518 : {
519 : struct nai_realm *realm;
520 : const u8 *pos, *end;
521 : u16 i, num;
522 : size_t left;
523 :
524 614 : if (anqp == NULL)
525 0 : return NULL;
526 614 : left = wpabuf_len(anqp);
527 614 : if (left < 2)
528 2 : return NULL;
529 :
530 612 : pos = wpabuf_head_u8(anqp);
531 612 : end = pos + left;
532 612 : num = WPA_GET_LE16(pos);
533 612 : wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
534 612 : pos += 2;
535 612 : left -= 2;
536 :
537 612 : if (num > left / 5) {
538 4 : wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
539 : "enough data (%u octets) for that many realms",
540 : num, (unsigned int) left);
541 4 : return NULL;
542 : }
543 :
544 608 : realm = os_calloc(num, sizeof(struct nai_realm));
545 608 : if (realm == NULL)
546 1 : return NULL;
547 :
548 1625 : for (i = 0; i < num; i++) {
549 1048 : pos = nai_realm_parse_realm(&realm[i], pos, end);
550 1048 : if (pos == NULL) {
551 30 : nai_realm_free(realm, num);
552 30 : return NULL;
553 : }
554 : }
555 :
556 577 : *count = num;
557 577 : return realm;
558 : }
559 :
560 :
561 636 : static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
562 : {
563 : char *tmp, *pos, *end;
564 636 : int match = 0;
565 :
566 636 : if (realm->realm == NULL || home_realm == NULL)
567 0 : return 0;
568 :
569 636 : if (os_strchr(realm->realm, ';') == NULL)
570 621 : return os_strcasecmp(realm->realm, home_realm) == 0;
571 :
572 15 : tmp = os_strdup(realm->realm);
573 15 : if (tmp == NULL)
574 1 : return 0;
575 :
576 14 : pos = tmp;
577 42 : while (*pos) {
578 28 : end = os_strchr(pos, ';');
579 28 : if (end)
580 28 : *end = '\0';
581 28 : if (os_strcasecmp(pos, home_realm) == 0) {
582 14 : match = 1;
583 14 : break;
584 : }
585 14 : if (end == NULL)
586 0 : break;
587 14 : pos = end + 1;
588 : }
589 :
590 14 : os_free(tmp);
591 :
592 14 : return match;
593 : }
594 :
595 :
596 916 : static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
597 : struct nai_realm_eap *eap)
598 : {
599 916 : if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
600 2 : wpa_msg(wpa_s, MSG_DEBUG,
601 : "nai-realm-cred-username: EAP method not supported: %d",
602 2 : eap->method);
603 2 : return 0; /* method not supported */
604 : }
605 :
606 1324 : if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
607 410 : eap->method != EAP_TYPE_FAST) {
608 : /* Only tunneled methods with username/password supported */
609 404 : wpa_msg(wpa_s, MSG_DEBUG,
610 : "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
611 404 : eap->method);
612 404 : return 0;
613 : }
614 :
615 510 : if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
616 59 : if (eap->inner_method &&
617 28 : eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
618 2 : wpa_msg(wpa_s, MSG_DEBUG,
619 : "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
620 2 : eap->inner_method);
621 2 : return 0;
622 : }
623 32 : if (!eap->inner_method &&
624 3 : eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
625 0 : wpa_msg(wpa_s, MSG_DEBUG,
626 : "nai-realm-cred-username: MSCHAPv2 not supported");
627 0 : return 0;
628 : }
629 : }
630 :
631 508 : if (eap->method == EAP_TYPE_TTLS) {
632 479 : if (eap->inner_method == 0 && eap->inner_non_eap == 0)
633 7 : return 1; /* Assume TTLS/MSCHAPv2 is used */
634 494 : if (eap->inner_method &&
635 22 : eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
636 2 : wpa_msg(wpa_s, MSG_DEBUG,
637 : "nai-realm-cred-username: TTLS, but inner not supported: %d",
638 2 : eap->inner_method);
639 2 : return 0;
640 : }
641 920 : if (eap->inner_non_eap &&
642 883 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
643 860 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
644 848 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
645 421 : eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
646 2 : wpa_msg(wpa_s, MSG_DEBUG,
647 : "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
648 2 : eap->inner_non_eap);
649 2 : return 0;
650 : }
651 : }
652 :
653 543 : if (eap->inner_method &&
654 86 : eap->inner_method != EAP_TYPE_GTC &&
655 40 : eap->inner_method != EAP_TYPE_MSCHAPV2) {
656 2 : wpa_msg(wpa_s, MSG_DEBUG,
657 : "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
658 2 : eap->inner_method);
659 2 : return 0;
660 : }
661 :
662 495 : return 1;
663 : }
664 :
665 :
666 20 : static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
667 : struct nai_realm_eap *eap)
668 : {
669 20 : if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
670 2 : wpa_msg(wpa_s, MSG_DEBUG,
671 : "nai-realm-cred-cert: Method not supported: %d",
672 2 : eap->method);
673 2 : return 0; /* method not supported */
674 : }
675 :
676 18 : if (eap->method != EAP_TYPE_TLS) {
677 : /* Only EAP-TLS supported for credential authentication */
678 2 : wpa_msg(wpa_s, MSG_DEBUG,
679 : "nai-realm-cred-cert: Method not TLS: %d",
680 2 : eap->method);
681 2 : return 0;
682 : }
683 :
684 16 : return 1;
685 : }
686 :
687 :
688 534 : static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
689 : struct wpa_cred *cred,
690 : struct nai_realm *realm)
691 : {
692 : u8 e;
693 :
694 1068 : if (cred->username == NULL ||
695 1068 : cred->username[0] == '\0' ||
696 1046 : ((cred->password == NULL ||
697 534 : cred->password[0] == '\0') &&
698 42 : (cred->private_key == NULL ||
699 20 : cred->private_key[0] == '\0'))) {
700 6 : wpa_msg(wpa_s, MSG_DEBUG,
701 : "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
702 2 : cred->username ? cred->username : "NULL",
703 2 : cred->password ? cred->password : "NULL",
704 2 : cred->private_key ? cred->private_key : "NULL");
705 2 : return NULL;
706 : }
707 :
708 950 : for (e = 0; e < realm->eap_count; e++) {
709 936 : struct nai_realm_eap *eap = &realm->eap[e];
710 1852 : if (cred->password && cred->password[0] &&
711 916 : nai_realm_cred_username(wpa_s, eap))
712 502 : return eap;
713 454 : if (cred->private_key && cred->private_key[0] &&
714 20 : nai_realm_cred_cert(wpa_s, eap))
715 16 : return eap;
716 : }
717 :
718 14 : return NULL;
719 : }
720 :
721 :
722 : #ifdef INTERWORKING_3GPP
723 :
724 68 : static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
725 : {
726 : u8 plmn[3], plmn2[3];
727 : const u8 *pos, *end;
728 : u8 udhl;
729 :
730 : /*
731 : * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
732 : * operator is allowed to include only two digits of the MNC, so allow
733 : * matches based on both two and three digit MNC assumptions. Since some
734 : * SIM/USIM cards may not expose MNC length conveniently, we may be
735 : * provided the default MNC length 3 here and as such, checking with MNC
736 : * length 2 is justifiable even though 3GPP TS 24.234 does not mention
737 : * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
738 : * with otherwise matching values would not be good idea in general, so
739 : * this should not result in selecting incorrect networks.
740 : */
741 : /* Match with 3 digit MNC */
742 68 : plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
743 68 : plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
744 68 : plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
745 : /* Match with 2 digit MNC */
746 68 : plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
747 68 : plmn2[1] = (imsi[2] - '0') | 0xf0;
748 68 : plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
749 :
750 68 : if (anqp == NULL)
751 0 : return 0;
752 68 : pos = wpabuf_head_u8(anqp);
753 68 : end = pos + wpabuf_len(anqp);
754 68 : if (end - pos < 2)
755 2 : return 0;
756 66 : if (*pos != 0) {
757 2 : wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
758 2 : return 0;
759 : }
760 64 : pos++;
761 64 : udhl = *pos++;
762 64 : if (udhl > end - pos) {
763 4 : wpa_printf(MSG_DEBUG, "Invalid UDHL");
764 4 : return 0;
765 : }
766 60 : end = pos + udhl;
767 :
768 360 : wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
769 360 : plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
770 : imsi, mnc_len);
771 :
772 128 : while (end - pos >= 2) {
773 : u8 iei, len;
774 : const u8 *l_end;
775 60 : iei = *pos++;
776 60 : len = *pos++ & 0x7f;
777 60 : if (len > end - pos)
778 2 : break;
779 58 : l_end = pos + len;
780 :
781 64 : if (iei == 0 && len > 0) {
782 : /* PLMN List */
783 : u8 num, i;
784 56 : wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
785 : pos, len);
786 56 : num = *pos++;
787 64 : for (i = 0; i < num; i++) {
788 60 : if (l_end - pos < 3)
789 2 : break;
790 78 : if (os_memcmp(pos, plmn, 3) == 0 ||
791 20 : os_memcmp(pos, plmn2, 3) == 0)
792 50 : return 1; /* Found matching PLMN */
793 8 : pos += 3;
794 : }
795 : } else {
796 2 : wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
797 : pos, len);
798 : }
799 :
800 8 : pos = l_end;
801 : }
802 :
803 10 : return 0;
804 : }
805 :
806 :
807 46 : static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
808 : size_t mnc_len, char prefix)
809 : {
810 : const char *sep, *msin;
811 : char *end, *pos;
812 : size_t msin_len, plmn_len;
813 :
814 : /*
815 : * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
816 : * Root NAI:
817 : * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
818 : * <MNC> is zero-padded to three digits in case two-digit MNC is used
819 : */
820 :
821 46 : if (imsi == NULL || os_strlen(imsi) > 16) {
822 1 : wpa_printf(MSG_DEBUG, "No valid IMSI available");
823 1 : return -1;
824 : }
825 45 : sep = os_strchr(imsi, '-');
826 45 : if (sep) {
827 45 : plmn_len = sep - imsi;
828 45 : msin = sep + 1;
829 0 : } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
830 0 : plmn_len = 3 + mnc_len;
831 0 : msin = imsi + plmn_len;
832 : } else
833 0 : return -1;
834 45 : if (plmn_len != 5 && plmn_len != 6)
835 0 : return -1;
836 45 : msin_len = os_strlen(msin);
837 :
838 45 : pos = nai;
839 45 : end = nai + nai_len;
840 45 : if (prefix)
841 12 : *pos++ = prefix;
842 45 : os_memcpy(pos, imsi, plmn_len);
843 45 : pos += plmn_len;
844 45 : os_memcpy(pos, msin, msin_len);
845 45 : pos += msin_len;
846 45 : pos += os_snprintf(pos, end - pos, "@wlan.mnc");
847 45 : if (plmn_len == 5) {
848 8 : *pos++ = '0';
849 8 : *pos++ = imsi[3];
850 8 : *pos++ = imsi[4];
851 : } else {
852 37 : *pos++ = imsi[3];
853 37 : *pos++ = imsi[4];
854 37 : *pos++ = imsi[5];
855 : }
856 135 : os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
857 135 : imsi[0], imsi[1], imsi[2]);
858 :
859 45 : return 0;
860 : }
861 :
862 :
863 12 : static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
864 : {
865 : char nai[100];
866 12 : if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
867 0 : return -1;
868 12 : return wpa_config_set_quoted(ssid, "identity", nai);
869 : }
870 :
871 : #endif /* INTERWORKING_3GPP */
872 :
873 :
874 157 : static int already_connected(struct wpa_supplicant *wpa_s,
875 : struct wpa_cred *cred, struct wpa_bss *bss)
876 : {
877 : struct wpa_ssid *ssid, *sel_ssid;
878 : struct wpa_bss *selected;
879 :
880 157 : if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
881 146 : return 0;
882 :
883 11 : ssid = wpa_s->current_ssid;
884 11 : if (ssid->parent_cred != cred)
885 3 : return 0;
886 :
887 15 : if (ssid->ssid_len != bss->ssid_len ||
888 7 : os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
889 1 : return 0;
890 :
891 7 : sel_ssid = NULL;
892 7 : selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
893 7 : if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
894 1 : return 0; /* higher priority network in scan results */
895 :
896 6 : return 1;
897 : }
898 :
899 :
900 151 : static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
901 : struct wpa_cred *cred,
902 : struct wpa_bss *bss)
903 : {
904 : struct wpa_ssid *ssid;
905 :
906 161 : for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
907 15 : if (ssid->parent_cred != cred)
908 8 : continue;
909 12 : if (ssid->ssid_len != bss->ssid_len ||
910 5 : os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
911 2 : continue;
912 :
913 5 : break;
914 : }
915 :
916 151 : if (ssid == NULL)
917 297 : return;
918 :
919 5 : wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
920 :
921 5 : if (ssid == wpa_s->current_ssid) {
922 1 : wpa_sm_set_config(wpa_s->wpa, NULL);
923 1 : eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
924 1 : wpa_s->own_disconnect_req = 1;
925 1 : wpa_supplicant_deauthenticate(wpa_s,
926 : WLAN_REASON_DEAUTH_LEAVING);
927 : }
928 :
929 5 : wpas_notify_network_removed(wpa_s, ssid);
930 5 : wpa_config_remove_network(wpa_s->conf, ssid->id);
931 : }
932 :
933 :
934 145 : static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
935 : struct wpa_ssid *ssid)
936 : {
937 145 : const char *key_mgmt = NULL;
938 : #ifdef CONFIG_IEEE80211R
939 : int res;
940 : struct wpa_driver_capa capa;
941 :
942 145 : res = wpa_drv_get_capa(wpa_s, &capa);
943 145 : if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
944 290 : key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
945 145 : "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
946 : "WPA-EAP FT-EAP";
947 : }
948 : #endif /* CONFIG_IEEE80211R */
949 :
950 145 : if (!key_mgmt)
951 0 : key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
952 0 : "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
953 287 : if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
954 284 : wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
955 142 : wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
956 3 : return -1;
957 142 : return 0;
958 : }
959 :
960 :
961 17 : static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
962 : struct wpa_cred *cred,
963 : struct wpa_bss *bss, int only_add)
964 : {
965 : #ifdef INTERWORKING_3GPP
966 : struct wpa_ssid *ssid;
967 : int eap_type;
968 : int res;
969 : char prefix;
970 :
971 17 : if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
972 0 : return -1;
973 :
974 102 : wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
975 102 : " (3GPP)", MAC2STR(bss->bssid));
976 :
977 17 : if (already_connected(wpa_s, cred, bss)) {
978 6 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
979 6 : MAC2STR(bss->bssid));
980 1 : return wpa_s->current_ssid->id;
981 : }
982 :
983 16 : remove_duplicate_network(wpa_s, cred, bss);
984 :
985 16 : ssid = wpa_config_add_network(wpa_s->conf);
986 16 : if (ssid == NULL)
987 1 : return -1;
988 15 : ssid->parent_cred = cred;
989 :
990 15 : wpas_notify_network_added(wpa_s, ssid);
991 15 : wpa_config_set_network_defaults(ssid);
992 15 : ssid->priority = cred->priority;
993 15 : ssid->temporary = 1;
994 15 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
995 15 : if (ssid->ssid == NULL)
996 1 : goto fail;
997 14 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
998 14 : ssid->ssid_len = bss->ssid_len;
999 14 : ssid->eap.sim_num = cred->sim_num;
1000 :
1001 14 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1002 1 : goto fail;
1003 :
1004 13 : eap_type = EAP_TYPE_SIM;
1005 : if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1006 : eap_type = EAP_TYPE_AKA;
1007 13 : if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1008 15 : if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1009 3 : cred->eap_method[0].method == EAP_TYPE_AKA ||
1010 1 : cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1011 13 : eap_type = cred->eap_method[0].method;
1012 : }
1013 :
1014 13 : switch (eap_type) {
1015 : case EAP_TYPE_SIM:
1016 11 : prefix = '1';
1017 11 : res = wpa_config_set(ssid, "eap", "SIM", 0);
1018 11 : break;
1019 : case EAP_TYPE_AKA:
1020 1 : prefix = '0';
1021 1 : res = wpa_config_set(ssid, "eap", "AKA", 0);
1022 1 : break;
1023 : case EAP_TYPE_AKA_PRIME:
1024 1 : prefix = '6';
1025 1 : res = wpa_config_set(ssid, "eap", "AKA'", 0);
1026 1 : break;
1027 : default:
1028 0 : res = -1;
1029 0 : break;
1030 : }
1031 13 : if (res < 0) {
1032 1 : wpa_msg(wpa_s, MSG_DEBUG,
1033 : "Selected EAP method (%d) not supported", eap_type);
1034 1 : goto fail;
1035 : }
1036 :
1037 12 : if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1038 1 : wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1039 1 : goto fail;
1040 : }
1041 :
1042 11 : if (cred->milenage && cred->milenage[0]) {
1043 13 : if (wpa_config_set_quoted(ssid, "password",
1044 7 : cred->milenage) < 0)
1045 1 : goto fail;
1046 4 : } else if (cred->pcsc) {
1047 0 : if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1048 0 : goto fail;
1049 0 : if (wpa_s->conf->pcsc_pin &&
1050 0 : wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1051 : < 0)
1052 0 : goto fail;
1053 : }
1054 :
1055 10 : wpa_s->next_ssid = ssid;
1056 10 : wpa_config_update_prio_list(wpa_s->conf);
1057 10 : if (!only_add)
1058 10 : interworking_reconnect(wpa_s);
1059 :
1060 10 : return ssid->id;
1061 :
1062 : fail:
1063 5 : wpas_notify_network_removed(wpa_s, ssid);
1064 5 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1065 : #endif /* INTERWORKING_3GPP */
1066 5 : return -1;
1067 : }
1068 :
1069 :
1070 104 : static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1071 : size_t rc_len)
1072 : {
1073 : const u8 *pos, *end;
1074 : u8 lens;
1075 :
1076 104 : if (ie == NULL)
1077 0 : return 0;
1078 :
1079 104 : pos = ie + 2;
1080 104 : end = ie + 2 + ie[1];
1081 :
1082 : /* Roaming Consortium element:
1083 : * Number of ANQP OIs
1084 : * OI #1 and #2 lengths
1085 : * OI #1, [OI #2], [OI #3]
1086 : */
1087 :
1088 104 : if (end - pos < 2)
1089 2 : return 0;
1090 :
1091 102 : pos++; /* skip Number of ANQP OIs */
1092 102 : lens = *pos++;
1093 102 : if ((lens & 0x0f) + (lens >> 4) > end - pos)
1094 2 : return 0;
1095 :
1096 100 : if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1097 30 : return 1;
1098 70 : pos += lens & 0x0f;
1099 :
1100 70 : if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1101 4 : return 1;
1102 66 : pos += lens >> 4;
1103 :
1104 70 : if (pos < end && (size_t) (end - pos) == rc_len &&
1105 4 : os_memcmp(pos, rc_id, rc_len) == 0)
1106 4 : return 1;
1107 :
1108 62 : return 0;
1109 : }
1110 :
1111 :
1112 66 : static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1113 : const u8 *rc_id, size_t rc_len)
1114 : {
1115 : const u8 *pos, *end;
1116 : u8 len;
1117 :
1118 66 : if (anqp == NULL)
1119 28 : return 0;
1120 :
1121 38 : pos = wpabuf_head(anqp);
1122 38 : end = pos + wpabuf_len(anqp);
1123 :
1124 : /* Set of <OI Length, OI> duples */
1125 198 : while (pos < end) {
1126 146 : len = *pos++;
1127 146 : if (len > end - pos)
1128 2 : break;
1129 144 : if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1130 22 : return 1;
1131 122 : pos += len;
1132 : }
1133 :
1134 16 : return 0;
1135 : }
1136 :
1137 :
1138 104 : static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1139 : const u8 *rc_id, size_t rc_len)
1140 : {
1141 170 : return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1142 66 : roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1143 : }
1144 :
1145 :
1146 506 : static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1147 : {
1148 : const u8 *ie;
1149 :
1150 506 : if (cred->required_roaming_consortium_len == 0)
1151 486 : return 0;
1152 :
1153 20 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1154 :
1155 22 : if (ie == NULL &&
1156 4 : (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1157 2 : return 1;
1158 :
1159 54 : return !roaming_consortium_match(ie,
1160 18 : bss->anqp ?
1161 18 : bss->anqp->roaming_consortium : NULL,
1162 18 : cred->required_roaming_consortium,
1163 : cred->required_roaming_consortium_len);
1164 : }
1165 :
1166 :
1167 432 : static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1168 : {
1169 : size_t i;
1170 :
1171 432 : if (!cred->excluded_ssid)
1172 412 : return 0;
1173 :
1174 30 : for (i = 0; i < cred->num_excluded_ssid; i++) {
1175 20 : struct excluded_ssid *e = &cred->excluded_ssid[i];
1176 30 : if (bss->ssid_len == e->ssid_len &&
1177 10 : os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1178 10 : return 1;
1179 : }
1180 :
1181 10 : return 0;
1182 : }
1183 :
1184 :
1185 655 : static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1186 : struct wpa_cred *cred, struct wpa_bss *bss)
1187 : {
1188 : #ifdef CONFIG_HS20
1189 : int res;
1190 : unsigned int dl_bandwidth, ul_bandwidth;
1191 : const u8 *wan;
1192 : u8 wan_info, dl_load, ul_load;
1193 : u16 lmd;
1194 : u32 ul_speed, dl_speed;
1195 :
1196 1259 : if (!cred->min_dl_bandwidth_home &&
1197 1208 : !cred->min_ul_bandwidth_home &&
1198 1172 : !cred->min_dl_bandwidth_roaming &&
1199 568 : !cred->min_ul_bandwidth_roaming)
1200 568 : return 0; /* No bandwidth constraint specified */
1201 :
1202 87 : if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1203 2 : return 0; /* No WAN Metrics known - ignore constraint */
1204 :
1205 85 : wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1206 85 : wan_info = wan[0];
1207 85 : if (wan_info & BIT(3))
1208 2 : return 1; /* WAN link at capacity */
1209 83 : lmd = WPA_GET_LE16(wan + 11);
1210 83 : if (lmd == 0)
1211 2 : return 0; /* Downlink/Uplink Load was not measured */
1212 81 : dl_speed = WPA_GET_LE32(wan + 1);
1213 81 : ul_speed = WPA_GET_LE32(wan + 5);
1214 81 : dl_load = wan[9];
1215 81 : ul_load = wan[10];
1216 :
1217 81 : if (dl_speed >= 0xffffff)
1218 2 : dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1219 : else
1220 79 : dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1221 :
1222 81 : if (ul_speed >= 0xffffff)
1223 2 : ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1224 : else
1225 79 : ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1226 :
1227 162 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1228 81 : bss->anqp->domain_name : NULL);
1229 81 : if (res > 0) {
1230 45 : if (cred->min_dl_bandwidth_home > dl_bandwidth)
1231 27 : return 1;
1232 18 : if (cred->min_ul_bandwidth_home > ul_bandwidth)
1233 4 : return 1;
1234 : } else {
1235 36 : if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1236 25 : return 1;
1237 11 : if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1238 2 : return 1;
1239 : }
1240 : #endif /* CONFIG_HS20 */
1241 :
1242 23 : return 0;
1243 : }
1244 :
1245 :
1246 621 : static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1247 : struct wpa_cred *cred, struct wpa_bss *bss)
1248 : {
1249 : const u8 *ie;
1250 : int res;
1251 :
1252 621 : if (!cred->max_bss_load)
1253 596 : return 0; /* No BSS Load constraint specified */
1254 :
1255 25 : ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1256 25 : if (ie == NULL || ie[1] < 3)
1257 3 : return 0; /* No BSS Load advertised */
1258 :
1259 44 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1260 22 : bss->anqp->domain_name : NULL);
1261 22 : if (res <= 0)
1262 3 : return 0; /* Not a home network */
1263 :
1264 19 : return ie[4] > cred->max_bss_load;
1265 : }
1266 :
1267 :
1268 : #ifdef CONFIG_HS20
1269 :
1270 20 : static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1271 : {
1272 103 : while (end - pos >= 4) {
1273 69 : if (pos[0] == proto && pos[3] == 1 /* Open */)
1274 6 : return 1;
1275 63 : pos += 4;
1276 : }
1277 :
1278 14 : return 0;
1279 : }
1280 :
1281 :
1282 15 : static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1283 : u16 port)
1284 : {
1285 71 : while (end - pos >= 4) {
1286 49 : if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1287 6 : pos[3] == 1 /* Open */)
1288 2 : return 1;
1289 41 : pos += 4;
1290 : }
1291 :
1292 13 : return 0;
1293 : }
1294 :
1295 : #endif /* CONFIG_HS20 */
1296 :
1297 :
1298 611 : static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1299 : struct wpa_cred *cred, struct wpa_bss *bss)
1300 : {
1301 : #ifdef CONFIG_HS20
1302 : int res;
1303 : const u8 *capab, *end;
1304 : unsigned int i, j;
1305 : int *ports;
1306 :
1307 611 : if (!cred->num_req_conn_capab)
1308 574 : return 0; /* No connection capability constraint specified */
1309 :
1310 37 : if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1311 2 : return 0; /* No Connection Capability known - ignore constraint
1312 : */
1313 :
1314 70 : res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1315 35 : bss->anqp->domain_name : NULL);
1316 35 : if (res > 0)
1317 2 : return 0; /* No constraint in home network */
1318 :
1319 33 : capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1320 33 : end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1321 :
1322 41 : for (i = 0; i < cred->num_req_conn_capab; i++) {
1323 35 : ports = cred->req_conn_capab_port[i];
1324 35 : if (!ports) {
1325 20 : if (!has_proto_match(capab, end,
1326 20 : cred->req_conn_capab_proto[i]))
1327 14 : return 1;
1328 : } else {
1329 17 : for (j = 0; ports[j] > -1; j++) {
1330 30 : if (!has_proto_port_match(
1331 : capab, end,
1332 15 : cred->req_conn_capab_proto[i],
1333 15 : ports[j]))
1334 13 : return 1;
1335 : }
1336 : }
1337 : }
1338 : #endif /* CONFIG_HS20 */
1339 :
1340 6 : return 0;
1341 : }
1342 :
1343 :
1344 705 : static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1345 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1346 : int *excluded)
1347 : {
1348 705 : struct wpa_cred *cred, *selected = NULL;
1349 : const u8 *ie;
1350 705 : int is_excluded = 0;
1351 :
1352 705 : ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1353 :
1354 825 : if (ie == NULL &&
1355 126 : (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1356 120 : return NULL;
1357 :
1358 585 : if (wpa_s->conf->cred == NULL)
1359 2 : return NULL;
1360 :
1361 1204 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1362 621 : if (cred->roaming_consortium_len == 0)
1363 535 : continue;
1364 :
1365 258 : if (!roaming_consortium_match(ie,
1366 86 : bss->anqp ?
1367 86 : bss->anqp->roaming_consortium :
1368 : NULL,
1369 86 : cred->roaming_consortium,
1370 : cred->roaming_consortium_len))
1371 30 : continue;
1372 :
1373 56 : if (cred_no_required_oi_match(cred, bss))
1374 2 : continue;
1375 54 : if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1376 3 : continue;
1377 51 : if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1378 1 : continue;
1379 50 : if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1380 1 : continue;
1381 49 : if (cred_excluded_ssid(cred, bss)) {
1382 2 : if (excluded == NULL)
1383 0 : continue;
1384 2 : if (selected == NULL) {
1385 2 : selected = cred;
1386 2 : is_excluded = 1;
1387 : }
1388 : } else {
1389 51 : if (selected == NULL || is_excluded ||
1390 4 : cred_prio_cmp(selected, cred) < 0) {
1391 45 : selected = cred;
1392 45 : is_excluded = 0;
1393 : }
1394 : }
1395 : }
1396 :
1397 583 : if (excluded)
1398 583 : *excluded = is_excluded;
1399 :
1400 583 : return selected;
1401 : }
1402 :
1403 :
1404 118 : static int interworking_set_eap_params(struct wpa_ssid *ssid,
1405 : struct wpa_cred *cred, int ttls)
1406 : {
1407 118 : if (cred->eap_method) {
1408 38 : ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1409 19 : cred->eap_method->method == EAP_TYPE_TTLS;
1410 :
1411 19 : os_free(ssid->eap.eap_methods);
1412 19 : ssid->eap.eap_methods =
1413 19 : os_malloc(sizeof(struct eap_method_type) * 2);
1414 19 : if (ssid->eap.eap_methods == NULL)
1415 1 : return -1;
1416 18 : os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1417 : sizeof(*cred->eap_method));
1418 18 : ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1419 18 : ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1420 : }
1421 :
1422 117 : if (ttls && cred->username && cred->username[0]) {
1423 : const char *pos;
1424 : char *anon;
1425 : /* Use anonymous NAI in Phase 1 */
1426 97 : pos = os_strchr(cred->username, '@');
1427 97 : if (pos) {
1428 2 : size_t buflen = 9 + os_strlen(pos) + 1;
1429 2 : anon = os_malloc(buflen);
1430 2 : if (anon == NULL)
1431 1 : return -1;
1432 1 : os_snprintf(anon, buflen, "anonymous%s", pos);
1433 95 : } else if (cred->realm) {
1434 91 : size_t buflen = 10 + os_strlen(cred->realm) + 1;
1435 91 : anon = os_malloc(buflen);
1436 91 : if (anon == NULL)
1437 1 : return -1;
1438 90 : os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1439 : } else {
1440 4 : anon = os_strdup("anonymous");
1441 4 : if (anon == NULL)
1442 1 : return -1;
1443 : }
1444 94 : if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1445 : 0) {
1446 1 : os_free(anon);
1447 1 : return -1;
1448 : }
1449 93 : os_free(anon);
1450 : }
1451 :
1452 129 : if (!ttls && cred->username && cred->username[0] && cred->realm &&
1453 30 : !os_strchr(cred->username, '@')) {
1454 : char *id;
1455 : size_t buflen;
1456 : int res;
1457 :
1458 32 : buflen = os_strlen(cred->username) + 1 +
1459 16 : os_strlen(cred->realm) + 1;
1460 :
1461 16 : id = os_malloc(buflen);
1462 16 : if (!id)
1463 1 : return -1;
1464 15 : os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
1465 15 : res = wpa_config_set_quoted(ssid, "identity", id);
1466 15 : os_free(id);
1467 15 : if (res < 0)
1468 1 : return -1;
1469 194 : } else if (cred->username && cred->username[0] &&
1470 97 : wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1471 1 : return -1;
1472 :
1473 110 : if (cred->password && cred->password[0]) {
1474 106 : if (cred->ext_password &&
1475 2 : wpa_config_set(ssid, "password", cred->password, 0) < 0)
1476 1 : return -1;
1477 205 : if (!cred->ext_password &&
1478 102 : wpa_config_set_quoted(ssid, "password", cred->password) <
1479 : 0)
1480 1 : return -1;
1481 : }
1482 :
1483 114 : if (cred->client_cert && cred->client_cert[0] &&
1484 6 : wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1485 1 : return -1;
1486 :
1487 : #ifdef ANDROID
1488 : if (cred->private_key &&
1489 : os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1490 : /* Use OpenSSL engine configuration for Android keystore */
1491 : if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1492 : wpa_config_set_quoted(ssid, "key_id",
1493 : cred->private_key + 11) < 0 ||
1494 : wpa_config_set(ssid, "engine", "1", 0) < 0)
1495 : return -1;
1496 : } else
1497 : #endif /* ANDROID */
1498 112 : if (cred->private_key && cred->private_key[0] &&
1499 5 : wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1500 1 : return -1;
1501 :
1502 109 : if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1503 3 : wpa_config_set_quoted(ssid, "private_key_passwd",
1504 3 : cred->private_key_passwd) < 0)
1505 1 : return -1;
1506 :
1507 105 : if (cred->phase1) {
1508 2 : os_free(ssid->eap.phase1);
1509 2 : ssid->eap.phase1 = os_strdup(cred->phase1);
1510 : }
1511 105 : if (cred->phase2) {
1512 2 : os_free(ssid->eap.phase2);
1513 2 : ssid->eap.phase2 = os_strdup(cred->phase2);
1514 : }
1515 :
1516 190 : if (cred->ca_cert && cred->ca_cert[0] &&
1517 85 : wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1518 1 : return -1;
1519 :
1520 108 : if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1521 4 : wpa_config_set_quoted(ssid, "domain_suffix_match",
1522 4 : cred->domain_suffix_match) < 0)
1523 1 : return -1;
1524 :
1525 103 : ssid->eap.ocsp = cred->ocsp;
1526 :
1527 103 : return 0;
1528 : }
1529 :
1530 :
1531 22 : static int interworking_connect_roaming_consortium(
1532 : struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1533 : struct wpa_bss *bss, int only_add)
1534 : {
1535 : struct wpa_ssid *ssid;
1536 :
1537 132 : wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1538 132 : " based on roaming consortium match", MAC2STR(bss->bssid));
1539 :
1540 22 : if (already_connected(wpa_s, cred, bss)) {
1541 24 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1542 24 : MAC2STR(bss->bssid));
1543 4 : return wpa_s->current_ssid->id;
1544 : }
1545 :
1546 18 : remove_duplicate_network(wpa_s, cred, bss);
1547 :
1548 18 : ssid = wpa_config_add_network(wpa_s->conf);
1549 18 : if (ssid == NULL)
1550 1 : return -1;
1551 17 : ssid->parent_cred = cred;
1552 17 : wpas_notify_network_added(wpa_s, ssid);
1553 17 : wpa_config_set_network_defaults(ssid);
1554 17 : ssid->priority = cred->priority;
1555 17 : ssid->temporary = 1;
1556 17 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
1557 17 : if (ssid->ssid == NULL)
1558 1 : goto fail;
1559 16 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1560 16 : ssid->ssid_len = bss->ssid_len;
1561 :
1562 16 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1563 1 : goto fail;
1564 :
1565 15 : if (cred->eap_method == NULL) {
1566 1 : wpa_msg(wpa_s, MSG_DEBUG,
1567 : "Interworking: No EAP method set for credential using roaming consortium");
1568 1 : goto fail;
1569 : }
1570 :
1571 28 : if (interworking_set_eap_params(
1572 : ssid, cred,
1573 14 : cred->eap_method->vendor == EAP_VENDOR_IETF &&
1574 14 : cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1575 7 : goto fail;
1576 :
1577 7 : wpa_s->next_ssid = ssid;
1578 7 : wpa_config_update_prio_list(wpa_s->conf);
1579 7 : if (!only_add)
1580 7 : interworking_reconnect(wpa_s);
1581 :
1582 7 : return ssid->id;
1583 :
1584 : fail:
1585 10 : wpas_notify_network_removed(wpa_s, ssid);
1586 10 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1587 10 : return -1;
1588 : }
1589 :
1590 :
1591 161 : int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1592 : int only_add)
1593 : {
1594 : struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1595 : struct wpa_ssid *ssid;
1596 : struct nai_realm *realm;
1597 161 : struct nai_realm_eap *eap = NULL;
1598 : u16 count, i;
1599 : char buf[100];
1600 161 : int excluded = 0, *excl = &excluded;
1601 : const char *name;
1602 :
1603 161 : if (wpa_s->conf->cred == NULL || bss == NULL)
1604 1 : return -1;
1605 319 : if (disallowed_bssid(wpa_s, bss->bssid) ||
1606 159 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1607 6 : wpa_msg(wpa_s, MSG_DEBUG,
1608 : "Interworking: Reject connection to disallowed BSS "
1609 6 : MACSTR, MAC2STR(bss->bssid));
1610 1 : return -1;
1611 : }
1612 :
1613 954 : wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1614 : " for connection",
1615 954 : MAC2STR(bss->bssid));
1616 :
1617 159 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1618 : /*
1619 : * We currently support only HS 2.0 networks and those are
1620 : * required to use WPA2-Enterprise.
1621 : */
1622 1 : wpa_msg(wpa_s, MSG_DEBUG,
1623 : "Interworking: Network does not use RSN");
1624 1 : return -1;
1625 : }
1626 :
1627 158 : cred_rc = interworking_credentials_available_roaming_consortium(
1628 : wpa_s, bss, 0, excl);
1629 158 : if (cred_rc) {
1630 21 : wpa_msg(wpa_s, MSG_DEBUG,
1631 : "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1632 : cred_rc->priority, cred_rc->sp_priority);
1633 21 : if (excl && !(*excl))
1634 21 : excl = NULL;
1635 : }
1636 :
1637 158 : cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1638 158 : if (cred) {
1639 122 : wpa_msg(wpa_s, MSG_DEBUG,
1640 : "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1641 : cred->priority, cred->sp_priority);
1642 122 : if (excl && !(*excl))
1643 113 : excl = NULL;
1644 : }
1645 :
1646 158 : cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1647 : excl);
1648 158 : if (cred_3gpp) {
1649 17 : wpa_msg(wpa_s, MSG_DEBUG,
1650 : "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1651 : cred_3gpp->priority, cred_3gpp->sp_priority);
1652 17 : if (excl && !(*excl))
1653 14 : excl = NULL;
1654 : }
1655 :
1656 158 : if (!cred_rc && !cred && !cred_3gpp) {
1657 10 : wpa_msg(wpa_s, MSG_DEBUG,
1658 : "Interworking: No full credential matches - consider options without BW(etc.) limits");
1659 10 : cred_rc = interworking_credentials_available_roaming_consortium(
1660 : wpa_s, bss, 1, excl);
1661 10 : if (cred_rc) {
1662 1 : wpa_msg(wpa_s, MSG_DEBUG,
1663 : "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1664 : cred_rc->priority, cred_rc->sp_priority);
1665 1 : if (excl && !(*excl))
1666 1 : excl = NULL;
1667 : }
1668 :
1669 10 : cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1670 : excl);
1671 10 : if (cred) {
1672 7 : wpa_msg(wpa_s, MSG_DEBUG,
1673 : "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1674 : cred->priority, cred->sp_priority);
1675 7 : if (excl && !(*excl))
1676 7 : excl = NULL;
1677 : }
1678 :
1679 10 : cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1680 : 1, excl);
1681 10 : if (cred_3gpp) {
1682 1 : wpa_msg(wpa_s, MSG_DEBUG,
1683 : "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1684 : cred_3gpp->priority, cred_3gpp->sp_priority);
1685 1 : if (excl && !(*excl))
1686 1 : excl = NULL;
1687 : }
1688 : }
1689 :
1690 158 : if (cred_rc &&
1691 9 : (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1692 0 : (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1693 22 : return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1694 : bss, only_add);
1695 :
1696 136 : if (cred_3gpp &&
1697 3 : (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1698 17 : return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1699 : only_add);
1700 : }
1701 :
1702 119 : if (cred == NULL) {
1703 6 : wpa_msg(wpa_s, MSG_DEBUG,
1704 : "Interworking: No matching credentials found for "
1705 6 : MACSTR, MAC2STR(bss->bssid));
1706 1 : return -1;
1707 : }
1708 :
1709 118 : realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1710 : &count);
1711 118 : if (realm == NULL) {
1712 0 : wpa_msg(wpa_s, MSG_DEBUG,
1713 : "Interworking: Could not parse NAI Realm list from "
1714 0 : MACSTR, MAC2STR(bss->bssid));
1715 0 : return -1;
1716 : }
1717 :
1718 119 : for (i = 0; i < count; i++) {
1719 119 : if (!nai_realm_match(&realm[i], cred->realm))
1720 1 : continue;
1721 118 : eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1722 118 : if (eap)
1723 118 : break;
1724 : }
1725 :
1726 118 : if (!eap) {
1727 0 : wpa_msg(wpa_s, MSG_DEBUG,
1728 : "Interworking: No matching credentials and EAP method found for "
1729 0 : MACSTR, MAC2STR(bss->bssid));
1730 0 : nai_realm_free(realm, count);
1731 0 : return -1;
1732 : }
1733 :
1734 708 : wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1735 708 : MAC2STR(bss->bssid));
1736 :
1737 118 : if (already_connected(wpa_s, cred, bss)) {
1738 6 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1739 6 : MAC2STR(bss->bssid));
1740 1 : nai_realm_free(realm, count);
1741 1 : return 0;
1742 : }
1743 :
1744 117 : remove_duplicate_network(wpa_s, cred, bss);
1745 :
1746 117 : ssid = wpa_config_add_network(wpa_s->conf);
1747 117 : if (ssid == NULL) {
1748 1 : nai_realm_free(realm, count);
1749 1 : return -1;
1750 : }
1751 116 : ssid->parent_cred = cred;
1752 116 : wpas_notify_network_added(wpa_s, ssid);
1753 116 : wpa_config_set_network_defaults(ssid);
1754 116 : ssid->priority = cred->priority;
1755 116 : ssid->temporary = 1;
1756 116 : ssid->ssid = os_zalloc(bss->ssid_len + 1);
1757 116 : if (ssid->ssid == NULL)
1758 1 : goto fail;
1759 115 : os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1760 115 : ssid->ssid_len = bss->ssid_len;
1761 :
1762 115 : if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1763 1 : goto fail;
1764 :
1765 114 : if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1766 114 : eap->method), 0) < 0)
1767 1 : goto fail;
1768 :
1769 113 : switch (eap->method) {
1770 : case EAP_TYPE_TTLS:
1771 97 : if (eap->inner_method) {
1772 6 : os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1773 : eap_get_name(EAP_VENDOR_IETF,
1774 6 : eap->inner_method));
1775 6 : if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1776 1 : goto fail;
1777 5 : break;
1778 : }
1779 91 : switch (eap->inner_non_eap) {
1780 : case NAI_REALM_INNER_NON_EAP_PAP:
1781 6 : if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1782 : 0)
1783 1 : goto fail;
1784 5 : break;
1785 : case NAI_REALM_INNER_NON_EAP_CHAP:
1786 2 : if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1787 : < 0)
1788 1 : goto fail;
1789 1 : break;
1790 : case NAI_REALM_INNER_NON_EAP_MSCHAP:
1791 2 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1792 : 0) < 0)
1793 1 : goto fail;
1794 1 : break;
1795 : case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1796 79 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1797 : 0) < 0)
1798 1 : goto fail;
1799 78 : break;
1800 : default:
1801 : /* EAP params were not set - assume TTLS/MSCHAPv2 */
1802 2 : if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1803 : 0) < 0)
1804 1 : goto fail;
1805 1 : break;
1806 : }
1807 86 : break;
1808 : case EAP_TYPE_PEAP:
1809 : case EAP_TYPE_FAST:
1810 10 : if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1811 : 0) < 0)
1812 1 : goto fail;
1813 9 : if (wpa_config_set(ssid, "pac_file",
1814 : "\"blob://pac_interworking\"", 0) < 0)
1815 1 : goto fail;
1816 15 : name = eap_get_name(EAP_VENDOR_IETF,
1817 15 : eap->inner_method ? eap->inner_method :
1818 : EAP_TYPE_MSCHAPV2);
1819 8 : if (name == NULL)
1820 0 : goto fail;
1821 8 : os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1822 8 : if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1823 1 : goto fail;
1824 7 : break;
1825 : case EAP_TYPE_TLS:
1826 6 : break;
1827 : }
1828 :
1829 104 : if (interworking_set_eap_params(ssid, cred,
1830 104 : eap->method == EAP_TYPE_TTLS) < 0)
1831 8 : goto fail;
1832 :
1833 96 : nai_realm_free(realm, count);
1834 :
1835 96 : wpa_s->next_ssid = ssid;
1836 96 : wpa_config_update_prio_list(wpa_s->conf);
1837 96 : if (!only_add)
1838 95 : interworking_reconnect(wpa_s);
1839 :
1840 96 : return ssid->id;
1841 :
1842 : fail:
1843 20 : wpas_notify_network_removed(wpa_s, ssid);
1844 20 : wpa_config_remove_network(wpa_s->conf, ssid->id);
1845 20 : nai_realm_free(realm, count);
1846 20 : return -1;
1847 : }
1848 :
1849 :
1850 : #ifdef PCSC_FUNCS
1851 : static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1852 : {
1853 : size_t len;
1854 :
1855 : if (wpa_s->imsi[0] && wpa_s->mnc_len)
1856 : return 0;
1857 :
1858 : len = sizeof(wpa_s->imsi) - 1;
1859 : if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1860 : scard_deinit(wpa_s->scard);
1861 : wpa_s->scard = NULL;
1862 : wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1863 : return -1;
1864 : }
1865 : wpa_s->imsi[len] = '\0';
1866 : wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1867 : wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1868 : wpa_s->imsi, wpa_s->mnc_len);
1869 :
1870 : return 0;
1871 : }
1872 : #endif /* PCSC_FUNCS */
1873 :
1874 :
1875 705 : static struct wpa_cred * interworking_credentials_available_3gpp(
1876 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1877 : int *excluded)
1878 : {
1879 705 : struct wpa_cred *selected = NULL;
1880 : #ifdef INTERWORKING_3GPP
1881 : struct wpa_cred *cred;
1882 : int ret;
1883 705 : int is_excluded = 0;
1884 :
1885 705 : if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1886 1128 : wpa_msg(wpa_s, MSG_DEBUG,
1887 : "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1888 1128 : bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1889 621 : return NULL;
1890 : }
1891 :
1892 : #ifdef CONFIG_EAP_PROXY
1893 : if (!wpa_s->imsi[0]) {
1894 : size_t len;
1895 : wpa_msg(wpa_s, MSG_DEBUG,
1896 : "Interworking: IMSI not available - try to read again through eap_proxy");
1897 : wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1898 : wpa_s->imsi,
1899 : &len);
1900 : if (wpa_s->mnc_len > 0) {
1901 : wpa_s->imsi[len] = '\0';
1902 : wpa_msg(wpa_s, MSG_DEBUG,
1903 : "eap_proxy: IMSI %s (MNC length %d)",
1904 : wpa_s->imsi, wpa_s->mnc_len);
1905 : } else {
1906 : wpa_msg(wpa_s, MSG_DEBUG,
1907 : "eap_proxy: IMSI not available");
1908 : }
1909 : }
1910 : #endif /* CONFIG_EAP_PROXY */
1911 :
1912 186 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1913 : char *sep;
1914 : const char *imsi;
1915 : int mnc_len;
1916 : char imsi_buf[16];
1917 : size_t msin_len;
1918 :
1919 : #ifdef PCSC_FUNCS
1920 : if (cred->pcsc && wpa_s->scard) {
1921 : if (interworking_pcsc_read_imsi(wpa_s) < 0)
1922 : continue;
1923 : imsi = wpa_s->imsi;
1924 : mnc_len = wpa_s->mnc_len;
1925 : goto compare;
1926 : }
1927 : #endif /* PCSC_FUNCS */
1928 : #ifdef CONFIG_EAP_PROXY
1929 : if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1930 : imsi = wpa_s->imsi;
1931 : mnc_len = wpa_s->mnc_len;
1932 : goto compare;
1933 : }
1934 : #endif /* CONFIG_EAP_PROXY */
1935 :
1936 170 : if (cred->imsi == NULL || !cred->imsi[0] ||
1937 124 : (!wpa_s->conf->external_sim &&
1938 112 : (cred->milenage == NULL || !cred->milenage[0])))
1939 75 : continue;
1940 :
1941 68 : sep = os_strchr(cred->imsi, '-');
1942 136 : if (sep == NULL ||
1943 124 : (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1944 0 : continue;
1945 68 : mnc_len = sep - cred->imsi - 3;
1946 68 : os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1947 68 : sep++;
1948 68 : msin_len = os_strlen(cred->imsi);
1949 68 : if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1950 68 : msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1951 68 : os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1952 68 : imsi_buf[3 + mnc_len + msin_len] = '\0';
1953 68 : imsi = imsi_buf;
1954 :
1955 : #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1956 : compare:
1957 : #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1958 408 : wpa_msg(wpa_s, MSG_DEBUG,
1959 : "Interworking: Parsing 3GPP info from " MACSTR,
1960 408 : MAC2STR(bss->bssid));
1961 68 : ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1962 68 : wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
1963 : ret ? "" : "not ");
1964 68 : if (ret) {
1965 50 : if (cred_no_required_oi_match(cred, bss))
1966 2 : continue;
1967 91 : if (!ignore_bw &&
1968 43 : cred_below_min_backhaul(wpa_s, cred, bss))
1969 3 : continue;
1970 85 : if (!ignore_bw &&
1971 40 : cred_over_max_bss_load(wpa_s, cred, bss))
1972 1 : continue;
1973 83 : if (!ignore_bw &&
1974 39 : cred_conn_capab_missing(wpa_s, cred, bss))
1975 1 : continue;
1976 43 : if (cred_excluded_ssid(cred, bss)) {
1977 2 : if (excluded == NULL)
1978 0 : continue;
1979 2 : if (selected == NULL) {
1980 2 : selected = cred;
1981 2 : is_excluded = 1;
1982 : }
1983 : } else {
1984 41 : if (selected == NULL || is_excluded ||
1985 0 : cred_prio_cmp(selected, cred) < 0) {
1986 41 : selected = cred;
1987 41 : is_excluded = 0;
1988 : }
1989 : }
1990 : }
1991 : }
1992 :
1993 84 : if (excluded)
1994 71 : *excluded = is_excluded;
1995 : #endif /* INTERWORKING_3GPP */
1996 84 : return selected;
1997 : }
1998 :
1999 :
2000 705 : static struct wpa_cred * interworking_credentials_available_realm(
2001 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2002 : int *excluded)
2003 : {
2004 705 : struct wpa_cred *cred, *selected = NULL;
2005 : struct nai_realm *realm;
2006 : u16 count, i;
2007 705 : int is_excluded = 0;
2008 :
2009 705 : if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
2010 209 : return NULL;
2011 :
2012 496 : if (wpa_s->conf->cred == NULL)
2013 0 : return NULL;
2014 :
2015 2976 : wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
2016 2976 : MACSTR, MAC2STR(bss->bssid));
2017 496 : realm = nai_realm_parse(bss->anqp->nai_realm, &count);
2018 496 : if (realm == NULL) {
2019 222 : wpa_msg(wpa_s, MSG_DEBUG,
2020 : "Interworking: Could not parse NAI Realm list from "
2021 222 : MACSTR, MAC2STR(bss->bssid));
2022 37 : return NULL;
2023 : }
2024 :
2025 952 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2026 493 : if (cred->realm == NULL)
2027 49 : continue;
2028 :
2029 621 : for (i = 0; i < count; i++) {
2030 517 : if (!nai_realm_match(&realm[i], cred->realm))
2031 101 : continue;
2032 416 : if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2033 400 : if (cred_no_required_oi_match(cred, bss))
2034 12 : continue;
2035 725 : if (!ignore_bw &&
2036 337 : cred_below_min_backhaul(wpa_s, cred, bss))
2037 28 : continue;
2038 669 : if (!ignore_bw &&
2039 309 : cred_over_max_bss_load(wpa_s, cred, bss))
2040 8 : continue;
2041 653 : if (!ignore_bw &&
2042 301 : cred_conn_capab_missing(wpa_s, cred, bss))
2043 12 : continue;
2044 340 : if (cred_excluded_ssid(cred, bss)) {
2045 6 : if (excluded == NULL)
2046 0 : continue;
2047 6 : if (selected == NULL) {
2048 6 : selected = cred;
2049 6 : is_excluded = 1;
2050 : }
2051 : } else {
2052 338 : if (selected == NULL || is_excluded ||
2053 4 : cred_prio_cmp(selected, cred) < 0)
2054 : {
2055 330 : selected = cred;
2056 330 : is_excluded = 0;
2057 : }
2058 : }
2059 340 : break;
2060 : } else {
2061 16 : wpa_msg(wpa_s, MSG_DEBUG,
2062 : "Interworking: realm-find-eap returned false");
2063 : }
2064 : }
2065 : }
2066 :
2067 459 : nai_realm_free(realm, count);
2068 :
2069 459 : if (excluded)
2070 446 : *excluded = is_excluded;
2071 :
2072 459 : return selected;
2073 : }
2074 :
2075 :
2076 541 : static struct wpa_cred * interworking_credentials_available_helper(
2077 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2078 : int *excluded)
2079 : {
2080 : struct wpa_cred *cred, *cred2;
2081 541 : int excluded1, excluded2 = 0;
2082 :
2083 1080 : if (disallowed_bssid(wpa_s, bss->bssid) ||
2084 539 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2085 24 : wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2086 24 : MACSTR, MAC2STR(bss->bssid));
2087 4 : return NULL;
2088 : }
2089 :
2090 537 : cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2091 : &excluded1);
2092 537 : cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2093 : &excluded2);
2094 543 : if (cred && cred2 &&
2095 9 : (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2096 3 : cred = cred2;
2097 3 : excluded1 = excluded2;
2098 : }
2099 537 : if (!cred) {
2100 330 : cred = cred2;
2101 330 : excluded1 = excluded2;
2102 : }
2103 :
2104 537 : cred2 = interworking_credentials_available_roaming_consortium(
2105 : wpa_s, bss, ignore_bw, &excluded2);
2106 545 : if (cred && cred2 &&
2107 8 : (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2108 8 : cred = cred2;
2109 8 : excluded1 = excluded2;
2110 : }
2111 537 : if (!cred) {
2112 311 : cred = cred2;
2113 311 : excluded1 = excluded2;
2114 : }
2115 :
2116 537 : if (excluded)
2117 485 : *excluded = excluded1;
2118 537 : return cred;
2119 : }
2120 :
2121 :
2122 365 : static struct wpa_cred * interworking_credentials_available(
2123 : struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2124 : {
2125 : struct wpa_cred *cred;
2126 :
2127 365 : if (excluded)
2128 329 : *excluded = 0;
2129 365 : cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2130 : excluded);
2131 365 : if (cred)
2132 189 : return cred;
2133 176 : return interworking_credentials_available_helper(wpa_s, bss, 1,
2134 : excluded);
2135 : }
2136 :
2137 :
2138 362 : int domain_name_list_contains(struct wpabuf *domain_names,
2139 : const char *domain, int exact_match)
2140 : {
2141 : const u8 *pos, *end;
2142 : size_t len;
2143 :
2144 362 : len = os_strlen(domain);
2145 362 : pos = wpabuf_head(domain_names);
2146 362 : end = pos + wpabuf_len(domain_names);
2147 :
2148 891 : while (end - pos > 1) {
2149 : u8 elen;
2150 :
2151 434 : elen = *pos++;
2152 434 : if (elen > end - pos)
2153 0 : break;
2154 :
2155 434 : wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2156 : pos, elen);
2157 772 : if (elen == len &&
2158 338 : os_strncasecmp(domain, (const char *) pos, len) == 0)
2159 265 : return 1;
2160 169 : if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
2161 4 : const char *ap = (const char *) pos;
2162 4 : int offset = elen - len;
2163 :
2164 4 : if (os_strncasecmp(domain, ap + offset, len) == 0)
2165 2 : return 1;
2166 : }
2167 :
2168 167 : pos += elen;
2169 : }
2170 :
2171 95 : return 0;
2172 : }
2173 :
2174 :
2175 422 : int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2176 : struct wpa_cred *cred,
2177 : struct wpabuf *domain_names)
2178 : {
2179 : size_t i;
2180 422 : int ret = -1;
2181 : #ifdef INTERWORKING_3GPP
2182 : char nai[100], *realm;
2183 :
2184 422 : char *imsi = NULL;
2185 422 : int mnc_len = 0;
2186 422 : if (cred->imsi)
2187 37 : imsi = cred->imsi;
2188 : #ifdef PCSC_FUNCS
2189 : else if (cred->pcsc && wpa_s->scard) {
2190 : if (interworking_pcsc_read_imsi(wpa_s) < 0)
2191 : return -1;
2192 : imsi = wpa_s->imsi;
2193 : mnc_len = wpa_s->mnc_len;
2194 : }
2195 : #endif /* PCSC_FUNCS */
2196 : #ifdef CONFIG_EAP_PROXY
2197 : else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2198 : imsi = wpa_s->imsi;
2199 : mnc_len = wpa_s->mnc_len;
2200 : }
2201 : #endif /* CONFIG_EAP_PROXY */
2202 422 : if (domain_names &&
2203 34 : imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2204 33 : realm = os_strchr(nai, '@');
2205 33 : if (realm)
2206 33 : realm++;
2207 33 : wpa_msg(wpa_s, MSG_DEBUG,
2208 : "Interworking: Search for match with SIM/USIM domain %s",
2209 : realm);
2210 66 : if (realm &&
2211 33 : domain_name_list_contains(domain_names, realm, 1))
2212 18 : return 1;
2213 15 : if (realm)
2214 15 : ret = 0;
2215 : }
2216 : #endif /* INTERWORKING_3GPP */
2217 :
2218 404 : if (domain_names == NULL || cred->domain == NULL)
2219 118 : return ret;
2220 :
2221 354 : for (i = 0; i < cred->num_domain; i++) {
2222 286 : wpa_msg(wpa_s, MSG_DEBUG,
2223 : "Interworking: Search for match with home SP FQDN %s",
2224 286 : cred->domain[i]);
2225 286 : if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2226 218 : return 1;
2227 : }
2228 :
2229 68 : return 0;
2230 : }
2231 :
2232 :
2233 210 : static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2234 : struct wpabuf *domain_names)
2235 : {
2236 : struct wpa_cred *cred;
2237 :
2238 210 : if (domain_names == NULL || wpa_s->conf->cred == NULL)
2239 44 : return -1;
2240 :
2241 195 : for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2242 167 : int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2243 167 : if (res)
2244 138 : return res;
2245 : }
2246 :
2247 28 : return 0;
2248 : }
2249 :
2250 :
2251 101 : static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2252 : {
2253 : struct wpa_bss *bss;
2254 : struct wpa_ssid *ssid;
2255 :
2256 160 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2257 102 : for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2258 86 : if (wpas_network_disabled(wpa_s, ssid) ||
2259 43 : ssid->mode != WPAS_MODE_INFRA)
2260 0 : continue;
2261 86 : if (ssid->ssid_len != bss->ssid_len ||
2262 43 : os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2263 : 0)
2264 0 : continue;
2265 : /*
2266 : * TODO: Consider more accurate matching of security
2267 : * configuration similarly to what is done in events.c
2268 : */
2269 43 : return 1;
2270 : }
2271 : }
2272 :
2273 58 : return 0;
2274 : }
2275 :
2276 :
2277 20 : static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2278 : struct roaming_partner *partner,
2279 : struct wpabuf *domain_names)
2280 : {
2281 40 : wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2282 40 : partner->fqdn, partner->exact_match, partner->priority,
2283 20 : partner->country);
2284 20 : wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2285 : wpabuf_head(domain_names),
2286 : wpabuf_len(domain_names));
2287 20 : if (!domain_name_list_contains(domain_names, partner->fqdn,
2288 : partner->exact_match))
2289 10 : return 0;
2290 : /* TODO: match Country */
2291 10 : return 1;
2292 : }
2293 :
2294 :
2295 87 : static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2296 : struct wpa_bss *bss)
2297 : {
2298 : size_t i;
2299 :
2300 87 : if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2301 19 : wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2302 19 : return 128; /* cannot check preference with domain name */
2303 : }
2304 :
2305 68 : if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2306 : {
2307 35 : wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2308 35 : return 0; /* max preference for home SP network */
2309 : }
2310 :
2311 43 : for (i = 0; i < cred->num_roaming_partner; i++) {
2312 20 : if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2313 20 : bss->anqp->domain_name)) {
2314 10 : wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2315 10 : cred->roaming_partner[i].priority);
2316 10 : return cred->roaming_partner[i].priority;
2317 : }
2318 : }
2319 :
2320 23 : wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2321 23 : return 128;
2322 : }
2323 :
2324 :
2325 57 : static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2326 : struct wpa_bss *selected,
2327 : struct wpa_cred *cred)
2328 : {
2329 : struct wpa_bss *bss;
2330 : u8 best_prio, prio;
2331 : struct wpa_cred *cred2;
2332 :
2333 : /*
2334 : * Check if any other BSS is operated by a more preferred roaming
2335 : * partner.
2336 : */
2337 :
2338 57 : best_prio = roaming_prio(wpa_s, cred, selected);
2339 399 : wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2340 342 : MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2341 : cred->id);
2342 :
2343 150 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2344 93 : if (bss == selected)
2345 57 : continue;
2346 36 : cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2347 36 : if (!cred2)
2348 6 : continue;
2349 30 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2350 0 : continue;
2351 30 : prio = roaming_prio(wpa_s, cred2, bss);
2352 210 : wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2353 180 : MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2354 : cred2->id);
2355 30 : if (prio < best_prio) {
2356 : int bh1, bh2, load1, load2, conn1, conn2;
2357 8 : bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2358 8 : load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2359 8 : conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2360 8 : bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2361 8 : load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2362 8 : conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2363 8 : wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2364 : bh1, load1, conn1, bh2, load2, conn2);
2365 8 : if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2366 6 : wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2367 6 : best_prio = prio;
2368 6 : selected = bss;
2369 : }
2370 : }
2371 : }
2372 :
2373 57 : return selected;
2374 : }
2375 :
2376 :
2377 276 : static void interworking_select_network(struct wpa_supplicant *wpa_s)
2378 : {
2379 276 : struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2380 276 : struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2381 276 : unsigned int count = 0;
2382 : const char *type;
2383 : int res;
2384 276 : struct wpa_cred *cred, *selected_cred = NULL;
2385 276 : struct wpa_cred *selected_home_cred = NULL;
2386 276 : struct wpa_cred *selected2_cred = NULL;
2387 276 : struct wpa_cred *selected2_home_cred = NULL;
2388 :
2389 276 : wpa_s->network_select = 0;
2390 :
2391 276 : wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2392 276 : wpa_s->auto_select);
2393 605 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2394 329 : int excluded = 0;
2395 : int bh, bss_load, conn_capab;
2396 329 : cred = interworking_credentials_available(wpa_s, bss,
2397 : &excluded);
2398 329 : if (!cred)
2399 241 : continue;
2400 :
2401 211 : if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2402 : /*
2403 : * We currently support only HS 2.0 networks and those
2404 : * are required to use WPA2-Enterprise.
2405 : */
2406 6 : wpa_msg(wpa_s, MSG_DEBUG,
2407 : "Interworking: Credential match with " MACSTR
2408 : " but network does not use RSN",
2409 6 : MAC2STR(bss->bssid));
2410 1 : continue;
2411 : }
2412 210 : if (!excluded)
2413 206 : count++;
2414 420 : res = interworking_home_sp(wpa_s, bss->anqp ?
2415 210 : bss->anqp->domain_name : NULL);
2416 210 : if (res > 0)
2417 110 : type = "home";
2418 100 : else if (res == 0)
2419 28 : type = "roaming";
2420 : else
2421 72 : type = "unknown";
2422 210 : bh = cred_below_min_backhaul(wpa_s, cred, bss);
2423 210 : bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2424 210 : conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2425 1680 : wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2426 210 : excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2427 1260 : MAC2STR(bss->bssid), type,
2428 : bh ? " below_min_backhaul=1" : "",
2429 : bss_load ? " over_max_bss_load=1" : "",
2430 : conn_capab ? " conn_capab_missing=1" : "",
2431 : cred->id, cred->priority, cred->sp_priority);
2432 210 : if (excluded)
2433 4 : continue;
2434 330 : if (wpa_s->auto_select ||
2435 125 : (wpa_s->conf->auto_interworking &&
2436 : wpa_s->auto_network_select)) {
2437 83 : if (bh || bss_load || conn_capab) {
2438 20 : if (selected2_cred == NULL ||
2439 3 : cred_prio_cmp(cred, selected2_cred) > 0) {
2440 14 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2441 14 : selected2 = bss;
2442 14 : selected2_cred = cred;
2443 : }
2444 34 : if (res > 0 &&
2445 1 : (selected2_home_cred == NULL ||
2446 1 : cred_prio_cmp(cred, selected2_home_cred) >
2447 : 0)) {
2448 7 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2449 7 : selected2_home = bss;
2450 7 : selected2_home_cred = cred;
2451 : }
2452 : } else {
2453 82 : if (selected_cred == NULL ||
2454 16 : cred_prio_cmp(cred, selected_cred) > 0) {
2455 54 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2456 54 : selected = bss;
2457 54 : selected_cred = cred;
2458 : }
2459 66 : if (res > 0 &&
2460 1 : (selected_home_cred == NULL ||
2461 1 : cred_prio_cmp(cred, selected_home_cred) >
2462 : 0)) {
2463 26 : wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2464 26 : selected_home = bss;
2465 26 : selected_home_cred = cred;
2466 : }
2467 : }
2468 : }
2469 : }
2470 :
2471 276 : if (selected_home && selected_home != selected &&
2472 2 : selected_home_cred &&
2473 2 : (selected_cred == NULL ||
2474 2 : cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2475 : /* Prefer network operated by the Home SP */
2476 2 : wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2477 2 : selected = selected_home;
2478 2 : selected_cred = selected_home_cred;
2479 : }
2480 :
2481 276 : if (!selected) {
2482 226 : if (selected2_home) {
2483 3 : wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2484 3 : selected = selected2_home;
2485 3 : selected_cred = selected2_home_cred;
2486 223 : } else if (selected2) {
2487 4 : wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2488 4 : selected = selected2;
2489 4 : selected_cred = selected2_cred;
2490 : }
2491 : }
2492 :
2493 276 : if (count == 0) {
2494 : /*
2495 : * No matching network was found based on configured
2496 : * credentials. Check whether any of the enabled network blocks
2497 : * have matching APs.
2498 : */
2499 101 : if (interworking_find_network_match(wpa_s)) {
2500 43 : wpa_msg(wpa_s, MSG_DEBUG,
2501 : "Interworking: Possible BSS match for enabled network configurations");
2502 43 : if (wpa_s->auto_select) {
2503 43 : interworking_reconnect(wpa_s);
2504 43 : return;
2505 : }
2506 : }
2507 :
2508 58 : if (wpa_s->auto_network_select) {
2509 0 : wpa_msg(wpa_s, MSG_DEBUG,
2510 : "Interworking: Continue scanning after ANQP fetch");
2511 0 : wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2512 : 0);
2513 0 : return;
2514 : }
2515 :
2516 58 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2517 : "with matching credentials found");
2518 58 : if (wpa_s->wpa_state == WPA_SCANNING)
2519 58 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2520 : }
2521 :
2522 233 : if (selected) {
2523 342 : wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2524 342 : MAC2STR(selected->bssid));
2525 57 : selected = pick_best_roaming_partner(wpa_s, selected,
2526 : selected_cred);
2527 342 : wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2528 : " (after best roaming partner selection)",
2529 342 : MAC2STR(selected->bssid));
2530 342 : wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2531 342 : MAC2STR(selected->bssid));
2532 57 : interworking_connect(wpa_s, selected, 0);
2533 : }
2534 : }
2535 :
2536 :
2537 : static struct wpa_bss_anqp *
2538 182 : interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2539 : {
2540 : struct wpa_bss *other;
2541 :
2542 182 : if (is_zero_ether_addr(bss->hessid))
2543 108 : return NULL; /* Cannot be in the same homegenous ESS */
2544 :
2545 166 : dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2546 94 : if (other == bss)
2547 72 : continue;
2548 22 : if (other->anqp == NULL)
2549 10 : continue;
2550 23 : if (other->anqp->roaming_consortium == NULL &&
2551 13 : other->anqp->nai_realm == NULL &&
2552 3 : other->anqp->anqp_3gpp == NULL &&
2553 1 : other->anqp->domain_name == NULL)
2554 1 : continue;
2555 11 : if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2556 0 : continue;
2557 11 : if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2558 8 : continue;
2559 5 : if (bss->ssid_len != other->ssid_len ||
2560 2 : os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2561 1 : continue;
2562 :
2563 24 : wpa_msg(wpa_s, MSG_DEBUG,
2564 : "Interworking: Share ANQP data with already fetched BSSID "
2565 : MACSTR " and " MACSTR,
2566 24 : MAC2STR(other->bssid), MAC2STR(bss->bssid));
2567 2 : other->anqp->users++;
2568 2 : return other->anqp;
2569 : }
2570 :
2571 72 : return NULL;
2572 : }
2573 :
2574 :
2575 654 : static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2576 : {
2577 : struct wpa_bss *bss;
2578 654 : int found = 0;
2579 : const u8 *ie;
2580 :
2581 1308 : wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2582 : "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2583 654 : wpa_s->fetch_anqp_in_progress,
2584 654 : wpa_s->fetch_osu_icon_in_progress);
2585 :
2586 654 : if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2587 3 : wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2588 3 : return;
2589 : }
2590 :
2591 : #ifdef CONFIG_HS20
2592 651 : if (wpa_s->fetch_osu_icon_in_progress) {
2593 0 : wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2594 0 : hs20_next_osu_icon(wpa_s);
2595 0 : return;
2596 : }
2597 : #endif /* CONFIG_HS20 */
2598 :
2599 1073 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2600 750 : if (!(bss->caps & IEEE80211_CAP_ESS))
2601 0 : continue;
2602 750 : ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2603 750 : if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2604 54 : continue; /* AP does not support Interworking */
2605 1391 : if (disallowed_bssid(wpa_s, bss->bssid) ||
2606 695 : disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2607 2 : continue; /* Disallowed BSS */
2608 :
2609 694 : if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2610 330 : if (bss->anqp == NULL) {
2611 182 : bss->anqp = interworking_match_anqp_info(wpa_s,
2612 : bss);
2613 182 : if (bss->anqp) {
2614 : /* Shared data already fetched */
2615 2 : continue;
2616 : }
2617 180 : bss->anqp = wpa_bss_anqp_alloc();
2618 180 : if (bss->anqp == NULL)
2619 0 : break;
2620 : }
2621 328 : found++;
2622 328 : bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2623 1968 : wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2624 1968 : MACSTR, MAC2STR(bss->bssid));
2625 328 : interworking_anqp_send_req(wpa_s, bss);
2626 328 : break;
2627 : }
2628 : }
2629 :
2630 651 : if (found == 0) {
2631 : #ifdef CONFIG_HS20
2632 323 : if (wpa_s->fetch_osu_info) {
2633 37 : if (wpa_s->num_prov_found == 0 &&
2634 3 : wpa_s->fetch_osu_waiting_scan &&
2635 3 : wpa_s->num_osu_scans < 3) {
2636 2 : wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2637 2 : hs20_start_osu_scan(wpa_s);
2638 2 : return;
2639 : }
2640 35 : wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2641 35 : hs20_osu_icon_fetch(wpa_s);
2642 35 : return;
2643 : }
2644 : #endif /* CONFIG_HS20 */
2645 286 : wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2646 286 : wpa_s->fetch_anqp_in_progress = 0;
2647 286 : if (wpa_s->network_select)
2648 276 : interworking_select_network(wpa_s);
2649 : }
2650 : }
2651 :
2652 :
2653 329 : void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2654 : {
2655 : struct wpa_bss *bss;
2656 :
2657 713 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2658 384 : bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2659 :
2660 329 : wpa_s->fetch_anqp_in_progress = 1;
2661 :
2662 : /*
2663 : * Start actual ANQP operation from eloop call to make sure the loop
2664 : * does not end up using excessive recursion.
2665 : */
2666 329 : eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2667 329 : }
2668 :
2669 :
2670 12 : int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2671 : {
2672 12 : if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2673 0 : return 0;
2674 :
2675 12 : wpa_s->network_select = 0;
2676 12 : wpa_s->fetch_all_anqp = 1;
2677 12 : wpa_s->fetch_osu_info = 0;
2678 :
2679 12 : interworking_start_fetch_anqp(wpa_s);
2680 :
2681 12 : return 0;
2682 : }
2683 :
2684 :
2685 6301 : void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2686 : {
2687 6301 : if (!wpa_s->fetch_anqp_in_progress)
2688 12597 : return;
2689 :
2690 5 : wpa_s->fetch_anqp_in_progress = 0;
2691 : }
2692 :
2693 :
2694 49 : int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2695 : u16 info_ids[], size_t num_ids, u32 subtypes,
2696 : int get_cell_pref)
2697 : {
2698 : struct wpabuf *buf;
2699 49 : struct wpabuf *extra_buf = NULL;
2700 49 : int ret = 0;
2701 : int freq;
2702 : struct wpa_bss *bss;
2703 : int res;
2704 :
2705 49 : bss = wpa_bss_get_bssid(wpa_s, dst);
2706 49 : if (!bss) {
2707 6 : wpa_printf(MSG_WARNING,
2708 : "ANQP: Cannot send query to unknown BSS "
2709 6 : MACSTR, MAC2STR(dst));
2710 1 : return -1;
2711 : }
2712 :
2713 48 : wpa_bss_anqp_unshare_alloc(bss);
2714 48 : freq = bss->freq;
2715 :
2716 336 : wpa_msg(wpa_s, MSG_DEBUG,
2717 : "ANQP: Query Request to " MACSTR " for %u id(s)",
2718 288 : MAC2STR(dst), (unsigned int) num_ids);
2719 :
2720 : #ifdef CONFIG_HS20
2721 48 : if (subtypes != 0) {
2722 2 : extra_buf = wpabuf_alloc(100);
2723 2 : if (extra_buf == NULL)
2724 1 : return -1;
2725 1 : hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
2726 : }
2727 : #endif /* CONFIG_HS20 */
2728 :
2729 : #ifdef CONFIG_MBO
2730 47 : if (get_cell_pref) {
2731 : struct wpabuf *mbo;
2732 :
2733 1 : mbo = mbo_build_anqp_buf(wpa_s, bss);
2734 1 : if (mbo) {
2735 0 : if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
2736 0 : wpabuf_free(extra_buf);
2737 0 : return -1;
2738 : }
2739 0 : wpabuf_put_buf(extra_buf, mbo);
2740 0 : wpabuf_free(mbo);
2741 : }
2742 : }
2743 : #endif /* CONFIG_MBO */
2744 :
2745 47 : buf = anqp_build_req(info_ids, num_ids, extra_buf);
2746 47 : wpabuf_free(extra_buf);
2747 47 : if (buf == NULL)
2748 1 : return -1;
2749 :
2750 46 : res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2751 46 : if (res < 0) {
2752 2 : wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2753 2 : wpabuf_free(buf);
2754 2 : ret = -1;
2755 : } else {
2756 44 : wpa_msg(wpa_s, MSG_DEBUG,
2757 : "ANQP: Query started with dialog token %u", res);
2758 : }
2759 :
2760 46 : return ret;
2761 : }
2762 :
2763 :
2764 12 : static void anqp_add_extra(struct wpa_supplicant *wpa_s,
2765 : struct wpa_bss_anqp *anqp, u16 info_id,
2766 : const u8 *data, size_t slen)
2767 : {
2768 12 : struct wpa_bss_anqp_elem *tmp, *elem = NULL;
2769 :
2770 12 : if (!anqp)
2771 0 : return;
2772 :
2773 19 : dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
2774 : list) {
2775 10 : if (tmp->infoid == info_id) {
2776 3 : elem = tmp;
2777 3 : break;
2778 : }
2779 : }
2780 :
2781 12 : if (!elem) {
2782 9 : elem = os_zalloc(sizeof(*elem));
2783 9 : if (!elem)
2784 1 : return;
2785 8 : elem->infoid = info_id;
2786 8 : dl_list_add(&anqp->anqp_elems, &elem->list);
2787 : } else {
2788 3 : wpabuf_free(elem->payload);
2789 : }
2790 :
2791 11 : elem->payload = wpabuf_alloc_copy(data, slen);
2792 11 : if (!elem->payload) {
2793 1 : dl_list_del(&elem->list);
2794 1 : os_free(elem);
2795 : }
2796 : }
2797 :
2798 :
2799 1393 : static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2800 : struct wpa_bss *bss, const u8 *sa,
2801 : u16 info_id,
2802 : const u8 *data, size_t slen,
2803 : u8 dialog_token)
2804 : {
2805 1393 : const u8 *pos = data;
2806 1393 : struct wpa_bss_anqp *anqp = NULL;
2807 : #ifdef CONFIG_HS20
2808 : u8 type;
2809 : #endif /* CONFIG_HS20 */
2810 :
2811 1393 : if (bss)
2812 1393 : anqp = bss->anqp;
2813 :
2814 1393 : switch (info_id) {
2815 : case ANQP_CAPABILITY_LIST:
2816 1704 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2817 1704 : " ANQP Capability list", MAC2STR(sa));
2818 284 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2819 : pos, slen);
2820 284 : if (anqp) {
2821 284 : wpabuf_free(anqp->capability_list);
2822 284 : anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2823 : }
2824 284 : break;
2825 : case ANQP_VENUE_NAME:
2826 174 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2827 174 : " Venue Name", MAC2STR(sa));
2828 29 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2829 29 : if (anqp) {
2830 28 : wpabuf_free(anqp->venue_name);
2831 28 : anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2832 : }
2833 29 : break;
2834 : case ANQP_NETWORK_AUTH_TYPE:
2835 48 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2836 : " Network Authentication Type information",
2837 48 : MAC2STR(sa));
2838 8 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2839 : "Type", pos, slen);
2840 8 : if (anqp) {
2841 8 : wpabuf_free(anqp->network_auth_type);
2842 8 : anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2843 : }
2844 8 : break;
2845 : case ANQP_ROAMING_CONSORTIUM:
2846 294 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2847 294 : " Roaming Consortium list", MAC2STR(sa));
2848 49 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2849 : pos, slen);
2850 49 : if (anqp) {
2851 49 : wpabuf_free(anqp->roaming_consortium);
2852 49 : anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2853 : }
2854 49 : break;
2855 : case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2856 54 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2857 : " IP Address Type Availability information",
2858 54 : MAC2STR(sa));
2859 9 : wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2860 : pos, slen);
2861 9 : if (anqp) {
2862 9 : wpabuf_free(anqp->ip_addr_type_availability);
2863 9 : anqp->ip_addr_type_availability =
2864 9 : wpabuf_alloc_copy(pos, slen);
2865 : }
2866 9 : break;
2867 : case ANQP_NAI_REALM:
2868 1458 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2869 1458 : " NAI Realm list", MAC2STR(sa));
2870 243 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2871 243 : if (anqp) {
2872 243 : wpabuf_free(anqp->nai_realm);
2873 243 : anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2874 : }
2875 243 : break;
2876 : case ANQP_3GPP_CELLULAR_NETWORK:
2877 318 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2878 318 : " 3GPP Cellular Network information", MAC2STR(sa));
2879 53 : wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2880 : pos, slen);
2881 53 : if (anqp) {
2882 53 : wpabuf_free(anqp->anqp_3gpp);
2883 53 : anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2884 : }
2885 53 : break;
2886 : case ANQP_DOMAIN_NAME:
2887 1350 : wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2888 1350 : " Domain Name list", MAC2STR(sa));
2889 225 : wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2890 225 : if (anqp) {
2891 225 : wpabuf_free(anqp->domain_name);
2892 225 : anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2893 : }
2894 225 : break;
2895 : case ANQP_VENDOR_SPECIFIC:
2896 481 : if (slen < 3)
2897 1 : return;
2898 :
2899 480 : switch (WPA_GET_BE24(pos)) {
2900 : #ifdef CONFIG_HS20
2901 : case OUI_WFA:
2902 479 : pos += 3;
2903 479 : slen -= 3;
2904 :
2905 479 : if (slen < 1)
2906 1 : return;
2907 478 : type = *pos++;
2908 478 : slen--;
2909 :
2910 478 : switch (type) {
2911 : case HS20_ANQP_OUI_TYPE:
2912 477 : hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
2913 : pos, slen,
2914 : dialog_token);
2915 477 : break;
2916 : default:
2917 1 : wpa_msg(wpa_s, MSG_DEBUG,
2918 : "HS20: Unsupported ANQP vendor type %u",
2919 : type);
2920 1 : break;
2921 : }
2922 478 : break;
2923 : #endif /* CONFIG_HS20 */
2924 : default:
2925 1 : wpa_msg(wpa_s, MSG_DEBUG,
2926 : "Interworking: Unsupported vendor-specific ANQP OUI %06x",
2927 : WPA_GET_BE24(pos));
2928 1 : return;
2929 : }
2930 478 : break;
2931 : default:
2932 12 : wpa_msg(wpa_s, MSG_DEBUG,
2933 : "Interworking: Unsupported ANQP Info ID %u", info_id);
2934 12 : anqp_add_extra(wpa_s, anqp, info_id, data, slen);
2935 12 : break;
2936 : }
2937 : }
2938 :
2939 :
2940 411 : void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2941 : enum gas_query_result result,
2942 : const struct wpabuf *adv_proto,
2943 : const struct wpabuf *resp, u16 status_code)
2944 : {
2945 411 : struct wpa_supplicant *wpa_s = ctx;
2946 : const u8 *pos;
2947 : const u8 *end;
2948 : u16 info_id;
2949 : u16 slen;
2950 411 : struct wpa_bss *bss = NULL, *tmp;
2951 411 : const char *anqp_result = "SUCCESS";
2952 :
2953 2877 : wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2954 : " dialog_token=%u result=%d status_code=%u",
2955 2466 : MAC2STR(dst), dialog_token, result, status_code);
2956 411 : if (result != GAS_QUERY_SUCCESS) {
2957 : #ifdef CONFIG_HS20
2958 22 : if (wpa_s->fetch_osu_icon_in_progress)
2959 0 : hs20_icon_fetch_failed(wpa_s);
2960 : #endif /* CONFIG_HS20 */
2961 22 : anqp_result = "FAILURE";
2962 22 : goto out;
2963 : }
2964 :
2965 389 : pos = wpabuf_head(adv_proto);
2966 778 : if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2967 778 : pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2968 2 : wpa_msg(wpa_s, MSG_DEBUG,
2969 : "ANQP: Unexpected Advertisement Protocol in response");
2970 : #ifdef CONFIG_HS20
2971 2 : if (wpa_s->fetch_osu_icon_in_progress)
2972 1 : hs20_icon_fetch_failed(wpa_s);
2973 : #endif /* CONFIG_HS20 */
2974 2 : anqp_result = "INVALID_FRAME";
2975 2 : goto out;
2976 : }
2977 :
2978 : /*
2979 : * If possible, select the BSS entry based on which BSS entry was used
2980 : * for the request. This can help in cases where multiple BSS entries
2981 : * may exist for the same AP.
2982 : */
2983 496 : dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2984 804 : if (tmp == wpa_s->interworking_gas_bss &&
2985 350 : os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2986 345 : bss = tmp;
2987 345 : break;
2988 : }
2989 : }
2990 387 : if (bss == NULL)
2991 42 : bss = wpa_bss_get_bssid(wpa_s, dst);
2992 :
2993 387 : pos = wpabuf_head(resp);
2994 387 : end = pos + wpabuf_len(resp);
2995 :
2996 2167 : while (pos < end) {
2997 1395 : unsigned int left = end - pos;
2998 :
2999 1395 : if (left < 4) {
3000 1 : wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
3001 1 : anqp_result = "INVALID_FRAME";
3002 1 : goto out_parse_done;
3003 : }
3004 1394 : info_id = WPA_GET_LE16(pos);
3005 1394 : pos += 2;
3006 1394 : slen = WPA_GET_LE16(pos);
3007 1394 : pos += 2;
3008 1394 : left -= 4;
3009 1394 : if (left < slen) {
3010 1 : wpa_msg(wpa_s, MSG_DEBUG,
3011 : "ANQP: Invalid element length for Info ID %u",
3012 : info_id);
3013 1 : anqp_result = "INVALID_FRAME";
3014 1 : goto out_parse_done;
3015 : }
3016 1393 : interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
3017 : slen, dialog_token);
3018 1393 : pos += slen;
3019 : }
3020 :
3021 : out_parse_done:
3022 : #ifdef CONFIG_HS20
3023 387 : hs20_notify_parse_done(wpa_s);
3024 : #endif /* CONFIG_HS20 */
3025 : out:
3026 2466 : wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
3027 2466 : MAC2STR(dst), anqp_result);
3028 411 : }
3029 :
3030 :
3031 237 : static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
3032 : struct wpa_scan_results *scan_res)
3033 : {
3034 237 : wpa_msg(wpa_s, MSG_DEBUG,
3035 : "Interworking: Scan results available - start ANQP fetch");
3036 237 : interworking_start_fetch_anqp(wpa_s);
3037 237 : }
3038 :
3039 :
3040 237 : int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
3041 : int *freqs)
3042 : {
3043 237 : interworking_stop_fetch_anqp(wpa_s);
3044 237 : wpa_s->network_select = 1;
3045 237 : wpa_s->auto_network_select = 0;
3046 237 : wpa_s->auto_select = !!auto_select;
3047 237 : wpa_s->fetch_all_anqp = 0;
3048 237 : wpa_s->fetch_osu_info = 0;
3049 237 : wpa_msg(wpa_s, MSG_DEBUG,
3050 : "Interworking: Start scan for network selection");
3051 237 : wpa_s->scan_res_handler = interworking_scan_res_handler;
3052 237 : wpa_s->normal_scans = 0;
3053 237 : wpa_s->scan_req = MANUAL_SCAN_REQ;
3054 237 : os_free(wpa_s->manual_scan_freqs);
3055 237 : wpa_s->manual_scan_freqs = freqs;
3056 237 : wpa_s->after_wps = 0;
3057 237 : wpa_s->known_wps_freq = 0;
3058 237 : wpa_supplicant_req_scan(wpa_s, 0, 0);
3059 :
3060 237 : return 0;
3061 : }
3062 :
3063 :
3064 9 : static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
3065 : enum gas_query_result result,
3066 : const struct wpabuf *adv_proto,
3067 : const struct wpabuf *resp, u16 status_code)
3068 : {
3069 9 : struct wpa_supplicant *wpa_s = ctx;
3070 : struct wpabuf *n;
3071 :
3072 71 : wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
3073 : " dialog_token=%d status_code=%d resp_len=%d",
3074 54 : MAC2STR(addr), dialog_token, status_code,
3075 8 : resp ? (int) wpabuf_len(resp) : -1);
3076 9 : if (!resp)
3077 1 : return;
3078 :
3079 8 : n = wpabuf_dup(resp);
3080 8 : if (n == NULL)
3081 1 : return;
3082 7 : wpabuf_free(wpa_s->prev_gas_resp);
3083 7 : wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
3084 7 : os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
3085 7 : wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
3086 7 : wpa_s->last_gas_resp = n;
3087 7 : os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
3088 7 : wpa_s->last_gas_dialog_token = dialog_token;
3089 : }
3090 :
3091 :
3092 12 : int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3093 : const struct wpabuf *adv_proto,
3094 : const struct wpabuf *query)
3095 : {
3096 : struct wpabuf *buf;
3097 12 : int ret = 0;
3098 : int freq;
3099 : struct wpa_bss *bss;
3100 : int res;
3101 : size_t len;
3102 12 : u8 query_resp_len_limit = 0;
3103 :
3104 12 : freq = wpa_s->assoc_freq;
3105 12 : bss = wpa_bss_get_bssid(wpa_s, dst);
3106 12 : if (bss)
3107 11 : freq = bss->freq;
3108 12 : if (freq <= 0)
3109 1 : return -1;
3110 :
3111 66 : wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3112 66 : MAC2STR(dst), freq);
3113 11 : wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3114 11 : wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3115 :
3116 11 : len = 3 + wpabuf_len(adv_proto) + 2;
3117 11 : if (query)
3118 9 : len += wpabuf_len(query);
3119 11 : buf = gas_build_initial_req(0, len);
3120 11 : if (buf == NULL)
3121 1 : return -1;
3122 :
3123 : /* Advertisement Protocol IE */
3124 10 : wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3125 10 : wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3126 10 : wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3127 10 : wpabuf_put_buf(buf, adv_proto);
3128 :
3129 : /* GAS Query */
3130 10 : if (query) {
3131 9 : wpabuf_put_le16(buf, wpabuf_len(query));
3132 9 : wpabuf_put_buf(buf, query);
3133 : } else
3134 1 : wpabuf_put_le16(buf, 0);
3135 :
3136 10 : res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
3137 10 : if (res < 0) {
3138 1 : wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3139 1 : wpabuf_free(buf);
3140 1 : ret = -1;
3141 : } else
3142 9 : wpa_msg(wpa_s, MSG_DEBUG,
3143 : "GAS: Query started with dialog token %u", res);
3144 :
3145 10 : return ret;
3146 : }
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