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afc064fe JM |
1 | /* |
2 | * Interworking (IEEE 802.11u) | |
6ede8a7e | 3 | * Copyright (c) 2011-2013, Qualcomm Atheros, Inc. |
b6a9590b | 4 | * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi> |
afc064fe | 5 | * |
e22d4d95 JM |
6 | * This software may be distributed under the terms of the BSD license. |
7 | * See README for more details. | |
afc064fe JM |
8 | */ |
9 | ||
10 | #include "includes.h" | |
11 | ||
12 | #include "common.h" | |
13 | #include "common/ieee802_11_defs.h" | |
14 | #include "common/gas.h" | |
b02fe7ff | 15 | #include "common/wpa_ctrl.h" |
7f41c92b | 16 | #include "utils/pcsc_funcs.h" |
d1ec319f | 17 | #include "utils/eloop.h" |
afc064fe | 18 | #include "drivers/driver.h" |
73c41a8f | 19 | #include "eap_common/eap_defs.h" |
8ca93c59 | 20 | #include "eap_peer/eap.h" |
67e1b984 | 21 | #include "eap_peer/eap_methods.h" |
efc58df2 | 22 | #include "eapol_supp/eapol_supp_sm.h" |
6ede8a7e | 23 | #include "rsn_supp/wpa.h" |
afc064fe | 24 | #include "wpa_supplicant_i.h" |
73c41a8f | 25 | #include "config.h" |
5ed7880d | 26 | #include "config_ssid.h" |
afc064fe | 27 | #include "bss.h" |
b02fe7ff | 28 | #include "scan.h" |
67e1b984 | 29 | #include "notify.h" |
270c9a43 | 30 | #include "driver_i.h" |
afc064fe | 31 | #include "gas_query.h" |
2249d714 | 32 | #include "hs20_supplicant.h" |
afc064fe JM |
33 | #include "interworking.h" |
34 | ||
35 | ||
3b840b67 JM |
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 | ||
afc064fe | 48 | static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s); |
b618a469 | 49 | static struct wpa_cred * interworking_credentials_available_realm( |
28f2a7c4 JM |
50 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
51 | int *excluded); | |
b618a469 | 52 | static struct wpa_cred * interworking_credentials_available_3gpp( |
28f2a7c4 JM |
53 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
54 | int *excluded); | |
afc064fe JM |
55 | |
56 | ||
751ac997 JM |
57 | static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b) |
58 | { | |
59 | if (a->priority > b->priority) | |
60 | return 1; | |
61 | if (a->priority < b->priority) | |
62 | return -1; | |
74794891 JM |
63 | if (a->provisioning_sp == NULL || b->provisioning_sp == NULL || |
64 | os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0) | |
65 | return 0; | |
66 | if (a->sp_priority < b->sp_priority) | |
67 | return 1; | |
68 | if (a->sp_priority > b->sp_priority) | |
69 | return -1; | |
751ac997 JM |
70 | return 0; |
71 | } | |
72 | ||
73 | ||
08410f08 JM |
74 | static void interworking_reconnect(struct wpa_supplicant *wpa_s) |
75 | { | |
76 | if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { | |
77 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
78 | wpa_supplicant_deauthenticate(wpa_s, | |
79 | WLAN_REASON_DEAUTH_LEAVING); | |
80 | } | |
81 | wpa_s->disconnected = 0; | |
82 | wpa_s->reassociate = 1; | |
a594e2a9 | 83 | |
cecdddc1 PS |
84 | if (wpa_supplicant_fast_associate(wpa_s) >= 0) |
85 | return; | |
a594e2a9 | 86 | |
08410f08 JM |
87 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
88 | } | |
89 | ||
90 | ||
afc064fe JM |
91 | static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids, |
92 | struct wpabuf *extra) | |
93 | { | |
94 | struct wpabuf *buf; | |
95 | size_t i; | |
96 | u8 *len_pos; | |
97 | ||
98 | buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 + | |
99 | (extra ? wpabuf_len(extra) : 0)); | |
100 | if (buf == NULL) | |
101 | return NULL; | |
102 | ||
103 | len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST); | |
104 | for (i = 0; i < num_ids; i++) | |
105 | wpabuf_put_le16(buf, info_ids[i]); | |
106 | gas_anqp_set_element_len(buf, len_pos); | |
107 | if (extra) | |
108 | wpabuf_put_buf(buf, extra); | |
109 | ||
110 | gas_anqp_set_len(buf); | |
111 | ||
112 | return buf; | |
113 | } | |
114 | ||
115 | ||
116 | static void interworking_anqp_resp_cb(void *ctx, const u8 *dst, | |
117 | u8 dialog_token, | |
118 | enum gas_query_result result, | |
119 | const struct wpabuf *adv_proto, | |
120 | const struct wpabuf *resp, | |
121 | u16 status_code) | |
122 | { | |
123 | struct wpa_supplicant *wpa_s = ctx; | |
124 | ||
b572df86 JM |
125 | wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR |
126 | " dialog_token=%u result=%d status_code=%u", | |
127 | MAC2STR(dst), dialog_token, result, status_code); | |
afc064fe JM |
128 | anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp, |
129 | status_code); | |
130 | interworking_next_anqp_fetch(wpa_s); | |
131 | } | |
132 | ||
133 | ||
7ff83367 JM |
134 | static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s) |
135 | { | |
136 | struct wpa_cred *cred; | |
137 | ||
138 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
139 | if (cred->roaming_consortium_len) | |
140 | return 1; | |
f47c1452 JM |
141 | if (cred->required_roaming_consortium_len) |
142 | return 1; | |
7ff83367 JM |
143 | } |
144 | return 0; | |
145 | } | |
146 | ||
147 | ||
148 | static int cred_with_3gpp(struct wpa_supplicant *wpa_s) | |
149 | { | |
150 | struct wpa_cred *cred; | |
151 | ||
152 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
153 | if (cred->pcsc || cred->imsi) | |
154 | return 1; | |
155 | } | |
156 | return 0; | |
157 | } | |
158 | ||
159 | ||
160 | static int cred_with_nai_realm(struct wpa_supplicant *wpa_s) | |
161 | { | |
162 | struct wpa_cred *cred; | |
163 | ||
164 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
165 | if (cred->pcsc || cred->imsi) | |
166 | continue; | |
167 | if (!cred->eap_method) | |
168 | return 1; | |
169 | if (cred->realm && cred->roaming_consortium_len == 0) | |
170 | return 1; | |
171 | } | |
172 | return 0; | |
173 | } | |
174 | ||
175 | ||
176 | static int cred_with_domain(struct wpa_supplicant *wpa_s) | |
177 | { | |
178 | struct wpa_cred *cred; | |
179 | ||
180 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
bc00053c JM |
181 | if (cred->domain || cred->pcsc || cred->imsi || |
182 | cred->roaming_partner) | |
7ff83367 JM |
183 | return 1; |
184 | } | |
185 | return 0; | |
186 | } | |
187 | ||
188 | ||
4cad9df1 | 189 | #ifdef CONFIG_HS20 |
33fb8c52 | 190 | |
4cad9df1 JM |
191 | static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s) |
192 | { | |
193 | struct wpa_cred *cred; | |
194 | ||
195 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
196 | if (cred->min_dl_bandwidth_home || | |
197 | cred->min_ul_bandwidth_home || | |
198 | cred->min_dl_bandwidth_roaming || | |
199 | cred->min_ul_bandwidth_roaming) | |
200 | return 1; | |
201 | } | |
202 | return 0; | |
203 | } | |
33fb8c52 JM |
204 | |
205 | ||
206 | static int cred_with_conn_capab(struct wpa_supplicant *wpa_s) | |
207 | { | |
208 | struct wpa_cred *cred; | |
209 | ||
210 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
211 | if (cred->num_req_conn_capab) | |
212 | return 1; | |
213 | } | |
214 | return 0; | |
215 | } | |
216 | ||
4cad9df1 JM |
217 | #endif /* CONFIG_HS20 */ |
218 | ||
219 | ||
7ff83367 JM |
220 | static int additional_roaming_consortiums(struct wpa_bss *bss) |
221 | { | |
222 | const u8 *ie; | |
223 | ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); | |
224 | if (ie == NULL || ie[1] == 0) | |
225 | return 0; | |
226 | return ie[2]; /* Number of ANQP OIs */ | |
227 | } | |
228 | ||
229 | ||
d1ec319f JM |
230 | static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx) |
231 | { | |
232 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
233 | interworking_next_anqp_fetch(wpa_s); | |
234 | } | |
235 | ||
236 | ||
afc064fe JM |
237 | static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s, |
238 | struct wpa_bss *bss) | |
239 | { | |
240 | struct wpabuf *buf; | |
241 | int ret = 0; | |
242 | int res; | |
7ff83367 JM |
243 | u16 info_ids[8]; |
244 | size_t num_info_ids = 0; | |
afc064fe | 245 | struct wpabuf *extra = NULL; |
7ff83367 | 246 | int all = wpa_s->fetch_all_anqp; |
afc064fe JM |
247 | |
248 | wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR, | |
249 | MAC2STR(bss->bssid)); | |
17b8995c | 250 | wpa_s->interworking_gas_bss = bss; |
afc064fe | 251 | |
7ff83367 JM |
252 | info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST; |
253 | if (all) { | |
254 | info_ids[num_info_ids++] = ANQP_VENUE_NAME; | |
255 | info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE; | |
256 | } | |
257 | if (all || (cred_with_roaming_consortium(wpa_s) && | |
258 | additional_roaming_consortiums(bss))) | |
259 | info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM; | |
260 | if (all) | |
261 | info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY; | |
262 | if (all || cred_with_nai_realm(wpa_s)) | |
263 | info_ids[num_info_ids++] = ANQP_NAI_REALM; | |
62f736dd | 264 | if (all || cred_with_3gpp(wpa_s)) { |
7ff83367 | 265 | info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK; |
62f736dd JT |
266 | wpa_supplicant_scard_init(wpa_s, NULL); |
267 | } | |
7ff83367 JM |
268 | if (all || cred_with_domain(wpa_s)) |
269 | info_ids[num_info_ids++] = ANQP_DOMAIN_NAME; | |
270 | wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info", | |
271 | (u8 *) info_ids, num_info_ids * 2); | |
272 | ||
2249d714 JM |
273 | #ifdef CONFIG_HS20 |
274 | if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) { | |
275 | u8 *len_pos; | |
276 | ||
277 | extra = wpabuf_alloc(100); | |
278 | if (!extra) | |
279 | return -1; | |
280 | ||
281 | len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC); | |
282 | wpabuf_put_be24(extra, OUI_WFA); | |
283 | wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE); | |
284 | wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST); | |
285 | wpabuf_put_u8(extra, 0); /* Reserved */ | |
286 | wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST); | |
4cad9df1 | 287 | if (all) |
7ff83367 JM |
288 | wpabuf_put_u8(extra, |
289 | HS20_STYPE_OPERATOR_FRIENDLY_NAME); | |
4cad9df1 | 290 | if (all || cred_with_min_backhaul(wpa_s)) |
7ff83367 | 291 | wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS); |
33fb8c52 | 292 | if (all || cred_with_conn_capab(wpa_s)) |
7ff83367 | 293 | wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY); |
4cad9df1 | 294 | if (all) |
7ff83367 | 295 | wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS); |
4cad9df1 | 296 | if (all) |
1d2215fc | 297 | wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST); |
2249d714 JM |
298 | gas_anqp_set_element_len(extra, len_pos); |
299 | } | |
300 | #endif /* CONFIG_HS20 */ | |
301 | ||
7ff83367 | 302 | buf = anqp_build_req(info_ids, num_info_ids, extra); |
afc064fe JM |
303 | wpabuf_free(extra); |
304 | if (buf == NULL) | |
305 | return -1; | |
306 | ||
307 | res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf, | |
308 | interworking_anqp_resp_cb, wpa_s); | |
309 | if (res < 0) { | |
310 | wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); | |
24c694b4 | 311 | wpabuf_free(buf); |
afc064fe | 312 | ret = -1; |
d1ec319f JM |
313 | eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, |
314 | NULL); | |
afc064fe JM |
315 | } else |
316 | wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " | |
317 | "%u", res); | |
318 | ||
afc064fe JM |
319 | return ret; |
320 | } | |
321 | ||
322 | ||
73c41a8f JM |
323 | struct nai_realm_eap { |
324 | u8 method; | |
325 | u8 inner_method; | |
326 | enum nai_realm_eap_auth_inner_non_eap inner_non_eap; | |
327 | u8 cred_type; | |
328 | u8 tunneled_cred_type; | |
329 | }; | |
330 | ||
331 | struct nai_realm { | |
332 | u8 encoding; | |
333 | char *realm; | |
334 | u8 eap_count; | |
335 | struct nai_realm_eap *eap; | |
336 | }; | |
337 | ||
338 | ||
339 | static void nai_realm_free(struct nai_realm *realms, u16 count) | |
340 | { | |
341 | u16 i; | |
342 | ||
343 | if (realms == NULL) | |
344 | return; | |
345 | for (i = 0; i < count; i++) { | |
346 | os_free(realms[i].eap); | |
347 | os_free(realms[i].realm); | |
348 | } | |
349 | os_free(realms); | |
350 | } | |
351 | ||
352 | ||
353 | static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos, | |
354 | const u8 *end) | |
355 | { | |
356 | u8 elen, auth_count, a; | |
357 | const u8 *e_end; | |
358 | ||
359 | if (pos + 3 > end) { | |
360 | wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields"); | |
361 | return NULL; | |
362 | } | |
363 | ||
364 | elen = *pos++; | |
365 | if (pos + elen > end || elen < 2) { | |
366 | wpa_printf(MSG_DEBUG, "No room for EAP Method subfield"); | |
367 | return NULL; | |
368 | } | |
369 | e_end = pos + elen; | |
370 | e->method = *pos++; | |
371 | auth_count = *pos++; | |
372 | wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u", | |
373 | elen, e->method, auth_count); | |
374 | ||
375 | for (a = 0; a < auth_count; a++) { | |
376 | u8 id, len; | |
377 | ||
378 | if (pos + 2 > end || pos + 2 + pos[1] > end) { | |
379 | wpa_printf(MSG_DEBUG, "No room for Authentication " | |
380 | "Parameter subfield"); | |
381 | return NULL; | |
382 | } | |
383 | ||
384 | id = *pos++; | |
385 | len = *pos++; | |
386 | ||
387 | switch (id) { | |
388 | case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH: | |
389 | if (len < 1) | |
390 | break; | |
391 | e->inner_non_eap = *pos; | |
392 | if (e->method != EAP_TYPE_TTLS) | |
393 | break; | |
394 | switch (*pos) { | |
395 | case NAI_REALM_INNER_NON_EAP_PAP: | |
396 | wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP"); | |
397 | break; | |
398 | case NAI_REALM_INNER_NON_EAP_CHAP: | |
399 | wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP"); | |
400 | break; | |
401 | case NAI_REALM_INNER_NON_EAP_MSCHAP: | |
402 | wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP"); | |
403 | break; | |
404 | case NAI_REALM_INNER_NON_EAP_MSCHAPV2: | |
405 | wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2"); | |
406 | break; | |
407 | } | |
408 | break; | |
409 | case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD: | |
410 | if (len < 1) | |
411 | break; | |
412 | e->inner_method = *pos; | |
413 | wpa_printf(MSG_DEBUG, "Inner EAP method: %u", | |
414 | e->inner_method); | |
415 | break; | |
416 | case NAI_REALM_EAP_AUTH_CRED_TYPE: | |
417 | if (len < 1) | |
418 | break; | |
419 | e->cred_type = *pos; | |
420 | wpa_printf(MSG_DEBUG, "Credential Type: %u", | |
421 | e->cred_type); | |
422 | break; | |
423 | case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE: | |
424 | if (len < 1) | |
425 | break; | |
426 | e->tunneled_cred_type = *pos; | |
427 | wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential " | |
428 | "Type: %u", e->tunneled_cred_type); | |
429 | break; | |
430 | default: | |
431 | wpa_printf(MSG_DEBUG, "Unsupported Authentication " | |
432 | "Parameter: id=%u len=%u", id, len); | |
433 | wpa_hexdump(MSG_DEBUG, "Authentication Parameter " | |
434 | "Value", pos, len); | |
435 | break; | |
436 | } | |
437 | ||
438 | pos += len; | |
439 | } | |
440 | ||
441 | return e_end; | |
442 | } | |
443 | ||
444 | ||
445 | static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos, | |
446 | const u8 *end) | |
447 | { | |
448 | u16 len; | |
449 | const u8 *f_end; | |
450 | u8 realm_len, e; | |
451 | ||
452 | if (end - pos < 4) { | |
453 | wpa_printf(MSG_DEBUG, "No room for NAI Realm Data " | |
454 | "fixed fields"); | |
455 | return NULL; | |
456 | } | |
457 | ||
458 | len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */ | |
459 | pos += 2; | |
460 | if (pos + len > end || len < 3) { | |
461 | wpa_printf(MSG_DEBUG, "No room for NAI Realm Data " | |
462 | "(len=%u; left=%u)", | |
463 | len, (unsigned int) (end - pos)); | |
464 | return NULL; | |
465 | } | |
466 | f_end = pos + len; | |
467 | ||
468 | r->encoding = *pos++; | |
469 | realm_len = *pos++; | |
470 | if (pos + realm_len > f_end) { | |
471 | wpa_printf(MSG_DEBUG, "No room for NAI Realm " | |
472 | "(len=%u; left=%u)", | |
473 | realm_len, (unsigned int) (f_end - pos)); | |
474 | return NULL; | |
475 | } | |
476 | wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len); | |
5e24dc8a | 477 | r->realm = dup_binstr(pos, realm_len); |
73c41a8f JM |
478 | if (r->realm == NULL) |
479 | return NULL; | |
73c41a8f JM |
480 | pos += realm_len; |
481 | ||
482 | if (pos + 1 > f_end) { | |
483 | wpa_printf(MSG_DEBUG, "No room for EAP Method Count"); | |
484 | return NULL; | |
485 | } | |
486 | r->eap_count = *pos++; | |
487 | wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count); | |
488 | if (pos + r->eap_count * 3 > f_end) { | |
489 | wpa_printf(MSG_DEBUG, "No room for EAP Methods"); | |
490 | return NULL; | |
491 | } | |
f9884c09 | 492 | r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap)); |
73c41a8f JM |
493 | if (r->eap == NULL) |
494 | return NULL; | |
495 | ||
496 | for (e = 0; e < r->eap_count; e++) { | |
497 | pos = nai_realm_parse_eap(&r->eap[e], pos, f_end); | |
498 | if (pos == NULL) | |
499 | return NULL; | |
500 | } | |
501 | ||
502 | return f_end; | |
503 | } | |
504 | ||
505 | ||
506 | static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count) | |
507 | { | |
508 | struct nai_realm *realm; | |
509 | const u8 *pos, *end; | |
510 | u16 i, num; | |
511 | ||
512 | if (anqp == NULL || wpabuf_len(anqp) < 2) | |
513 | return NULL; | |
514 | ||
515 | pos = wpabuf_head_u8(anqp); | |
516 | end = pos + wpabuf_len(anqp); | |
517 | num = WPA_GET_LE16(pos); | |
518 | wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num); | |
519 | pos += 2; | |
520 | ||
521 | if (num * 5 > end - pos) { | |
522 | wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not " | |
523 | "enough data (%u octets) for that many realms", | |
524 | num, (unsigned int) (end - pos)); | |
525 | return NULL; | |
526 | } | |
527 | ||
f9884c09 | 528 | realm = os_calloc(num, sizeof(struct nai_realm)); |
73c41a8f JM |
529 | if (realm == NULL) |
530 | return NULL; | |
531 | ||
532 | for (i = 0; i < num; i++) { | |
533 | pos = nai_realm_parse_realm(&realm[i], pos, end); | |
534 | if (pos == NULL) { | |
535 | nai_realm_free(realm, num); | |
536 | return NULL; | |
537 | } | |
538 | } | |
539 | ||
540 | *count = num; | |
541 | return realm; | |
542 | } | |
543 | ||
544 | ||
545 | static int nai_realm_match(struct nai_realm *realm, const char *home_realm) | |
546 | { | |
547 | char *tmp, *pos, *end; | |
548 | int match = 0; | |
549 | ||
3b840b67 | 550 | if (realm->realm == NULL || home_realm == NULL) |
73c41a8f JM |
551 | return 0; |
552 | ||
553 | if (os_strchr(realm->realm, ';') == NULL) | |
554 | return os_strcasecmp(realm->realm, home_realm) == 0; | |
555 | ||
556 | tmp = os_strdup(realm->realm); | |
557 | if (tmp == NULL) | |
558 | return 0; | |
559 | ||
560 | pos = tmp; | |
561 | while (*pos) { | |
562 | end = os_strchr(pos, ';'); | |
563 | if (end) | |
564 | *end = '\0'; | |
565 | if (os_strcasecmp(pos, home_realm) == 0) { | |
566 | match = 1; | |
567 | break; | |
568 | } | |
569 | if (end == NULL) | |
570 | break; | |
571 | pos = end + 1; | |
572 | } | |
573 | ||
574 | os_free(tmp); | |
575 | ||
576 | return match; | |
577 | } | |
578 | ||
579 | ||
67e1b984 JM |
580 | static int nai_realm_cred_username(struct nai_realm_eap *eap) |
581 | { | |
582 | if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) | |
583 | return 0; /* method not supported */ | |
584 | ||
1f5d2dd3 JM |
585 | if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP && |
586 | eap->method != EAP_TYPE_FAST) { | |
67e1b984 JM |
587 | /* Only tunneled methods with username/password supported */ |
588 | return 0; | |
589 | } | |
590 | ||
1f5d2dd3 | 591 | if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) { |
03c961e5 JM |
592 | if (eap->inner_method && |
593 | eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) | |
594 | return 0; | |
595 | if (!eap->inner_method && | |
596 | eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) | |
597 | return 0; | |
598 | } | |
67e1b984 JM |
599 | |
600 | if (eap->method == EAP_TYPE_TTLS) { | |
601 | if (eap->inner_method == 0 && eap->inner_non_eap == 0) | |
2047e596 | 602 | return 1; /* Assume TTLS/MSCHAPv2 is used */ |
67e1b984 JM |
603 | if (eap->inner_method && |
604 | eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) | |
605 | return 0; | |
606 | if (eap->inner_non_eap && | |
607 | eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP && | |
608 | eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP && | |
609 | eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP && | |
610 | eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) | |
611 | return 0; | |
612 | } | |
613 | ||
614 | if (eap->inner_method && | |
615 | eap->inner_method != EAP_TYPE_GTC && | |
616 | eap->inner_method != EAP_TYPE_MSCHAPV2) | |
617 | return 0; | |
618 | ||
619 | return 1; | |
620 | } | |
621 | ||
622 | ||
11e4f46a JM |
623 | static int nai_realm_cred_cert(struct nai_realm_eap *eap) |
624 | { | |
625 | if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) | |
626 | return 0; /* method not supported */ | |
627 | ||
628 | if (eap->method != EAP_TYPE_TLS) { | |
629 | /* Only EAP-TLS supported for credential authentication */ | |
630 | return 0; | |
631 | } | |
632 | ||
633 | return 1; | |
634 | } | |
635 | ||
636 | ||
1bb7b8e8 | 637 | static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred, |
19df9b07 | 638 | struct nai_realm *realm) |
67e1b984 JM |
639 | { |
640 | u8 e; | |
641 | ||
1bb7b8e8 JM |
642 | if (cred == NULL || |
643 | cred->username == NULL || | |
644 | cred->username[0] == '\0' || | |
11e4f46a JM |
645 | ((cred->password == NULL || |
646 | cred->password[0] == '\0') && | |
647 | (cred->private_key == NULL || | |
648 | cred->private_key[0] == '\0'))) | |
67e1b984 JM |
649 | return NULL; |
650 | ||
651 | for (e = 0; e < realm->eap_count; e++) { | |
652 | struct nai_realm_eap *eap = &realm->eap[e]; | |
11e4f46a JM |
653 | if (cred->password && cred->password[0] && |
654 | nai_realm_cred_username(eap)) | |
655 | return eap; | |
656 | if (cred->private_key && cred->private_key[0] && | |
657 | nai_realm_cred_cert(eap)) | |
67e1b984 JM |
658 | return eap; |
659 | } | |
660 | ||
661 | return NULL; | |
662 | } | |
663 | ||
664 | ||
3b840b67 JM |
665 | #ifdef INTERWORKING_3GPP |
666 | ||
c21246f5 | 667 | static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len) |
3b840b67 | 668 | { |
0b9d3b22 | 669 | u8 plmn[3], plmn2[3]; |
3b840b67 JM |
670 | const u8 *pos, *end; |
671 | u8 udhl; | |
672 | ||
0b9d3b22 JM |
673 | /* |
674 | * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network | |
675 | * operator is allowed to include only two digits of the MNC, so allow | |
676 | * matches based on both two and three digit MNC assumptions. Since some | |
677 | * SIM/USIM cards may not expose MNC length conveniently, we may be | |
678 | * provided the default MNC length 3 here and as such, checking with MNC | |
679 | * length 2 is justifiable even though 3GPP TS 24.234 does not mention | |
680 | * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used | |
681 | * with otherwise matching values would not be good idea in general, so | |
682 | * this should not result in selecting incorrect networks. | |
683 | */ | |
684 | /* Match with 3 digit MNC */ | |
3b840b67 | 685 | plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4); |
0b9d3b22 | 686 | plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4); |
3b840b67 | 687 | plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4); |
0b9d3b22 JM |
688 | /* Match with 2 digit MNC */ |
689 | plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4); | |
690 | plmn2[1] = (imsi[2] - '0') | 0xf0; | |
691 | plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4); | |
3b840b67 JM |
692 | |
693 | if (anqp == NULL) | |
694 | return 0; | |
695 | pos = wpabuf_head_u8(anqp); | |
696 | end = pos + wpabuf_len(anqp); | |
697 | if (pos + 2 > end) | |
698 | return 0; | |
699 | if (*pos != 0) { | |
700 | wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos); | |
701 | return 0; | |
702 | } | |
703 | pos++; | |
704 | udhl = *pos++; | |
705 | if (pos + udhl > end) { | |
706 | wpa_printf(MSG_DEBUG, "Invalid UDHL"); | |
707 | return 0; | |
708 | } | |
709 | end = pos + udhl; | |
710 | ||
0b9d3b22 JM |
711 | wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)", |
712 | plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2], | |
713 | imsi, mnc_len); | |
714 | ||
3b840b67 JM |
715 | while (pos + 2 <= end) { |
716 | u8 iei, len; | |
717 | const u8 *l_end; | |
718 | iei = *pos++; | |
719 | len = *pos++ & 0x7f; | |
720 | if (pos + len > end) | |
721 | break; | |
722 | l_end = pos + len; | |
723 | ||
724 | if (iei == 0 && len > 0) { | |
725 | /* PLMN List */ | |
726 | u8 num, i; | |
0b9d3b22 JM |
727 | wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element", |
728 | pos, len); | |
3b840b67 JM |
729 | num = *pos++; |
730 | for (i = 0; i < num; i++) { | |
0b9d3b22 | 731 | if (pos + 3 > l_end) |
3b840b67 | 732 | break; |
0b9d3b22 JM |
733 | if (os_memcmp(pos, plmn, 3) == 0 || |
734 | os_memcmp(pos, plmn2, 3) == 0) | |
3b840b67 | 735 | return 1; /* Found matching PLMN */ |
8f234012 | 736 | pos += 3; |
3b840b67 | 737 | } |
0b9d3b22 JM |
738 | } else { |
739 | wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element", | |
740 | pos, len); | |
3b840b67 JM |
741 | } |
742 | ||
743 | pos = l_end; | |
744 | } | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | ||
d8e59fea | 750 | static int build_root_nai(char *nai, size_t nai_len, const char *imsi, |
632c9458 | 751 | size_t mnc_len, char prefix) |
3b840b67 JM |
752 | { |
753 | const char *sep, *msin; | |
9914c96f | 754 | char *end, *pos; |
3b840b67 JM |
755 | size_t msin_len, plmn_len; |
756 | ||
757 | /* | |
758 | * TS 23.003, Clause 14 (3GPP to WLAN Interworking) | |
759 | * Root NAI: | |
760 | * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org | |
761 | * <MNC> is zero-padded to three digits in case two-digit MNC is used | |
762 | */ | |
763 | ||
764 | if (imsi == NULL || os_strlen(imsi) > 16) { | |
765 | wpa_printf(MSG_DEBUG, "No valid IMSI available"); | |
766 | return -1; | |
767 | } | |
768 | sep = os_strchr(imsi, '-'); | |
632c9458 JM |
769 | if (sep) { |
770 | plmn_len = sep - imsi; | |
771 | msin = sep + 1; | |
772 | } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) { | |
773 | plmn_len = 3 + mnc_len; | |
774 | msin = imsi + plmn_len; | |
775 | } else | |
3b840b67 | 776 | return -1; |
3b840b67 JM |
777 | if (plmn_len != 5 && plmn_len != 6) |
778 | return -1; | |
3b840b67 JM |
779 | msin_len = os_strlen(msin); |
780 | ||
781 | pos = nai; | |
d8e59fea | 782 | end = nai + nai_len; |
9914c96f JM |
783 | if (prefix) |
784 | *pos++ = prefix; | |
3b840b67 JM |
785 | os_memcpy(pos, imsi, plmn_len); |
786 | pos += plmn_len; | |
787 | os_memcpy(pos, msin, msin_len); | |
788 | pos += msin_len; | |
789 | pos += os_snprintf(pos, end - pos, "@wlan.mnc"); | |
790 | if (plmn_len == 5) { | |
791 | *pos++ = '0'; | |
792 | *pos++ = imsi[3]; | |
793 | *pos++ = imsi[4]; | |
794 | } else { | |
795 | *pos++ = imsi[3]; | |
796 | *pos++ = imsi[4]; | |
797 | *pos++ = imsi[5]; | |
798 | } | |
5dbbf369 JM |
799 | os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org", |
800 | imsi[0], imsi[1], imsi[2]); | |
3b840b67 | 801 | |
9914c96f JM |
802 | return 0; |
803 | } | |
804 | ||
805 | ||
806 | static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix) | |
807 | { | |
808 | char nai[100]; | |
632c9458 | 809 | if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0) |
9914c96f | 810 | return -1; |
3b840b67 JM |
811 | return wpa_config_set_quoted(ssid, "identity", nai); |
812 | } | |
813 | ||
814 | #endif /* INTERWORKING_3GPP */ | |
815 | ||
816 | ||
d28f4e44 JM |
817 | static int already_connected(struct wpa_supplicant *wpa_s, |
818 | struct wpa_cred *cred, struct wpa_bss *bss) | |
819 | { | |
b7fb98f0 JM |
820 | struct wpa_ssid *ssid, *sel_ssid; |
821 | struct wpa_bss *selected; | |
d28f4e44 JM |
822 | |
823 | if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL) | |
824 | return 0; | |
825 | ||
826 | ssid = wpa_s->current_ssid; | |
827 | if (ssid->parent_cred != cred) | |
828 | return 0; | |
829 | ||
830 | if (ssid->ssid_len != bss->ssid_len || | |
831 | os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0) | |
832 | return 0; | |
833 | ||
b7fb98f0 JM |
834 | sel_ssid = NULL; |
835 | selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid); | |
836 | if (selected && sel_ssid && sel_ssid->priority > ssid->priority) | |
837 | return 0; /* higher priority network in scan results */ | |
838 | ||
d28f4e44 JM |
839 | return 1; |
840 | } | |
841 | ||
842 | ||
6ede8a7e JM |
843 | static void remove_duplicate_network(struct wpa_supplicant *wpa_s, |
844 | struct wpa_cred *cred, | |
845 | struct wpa_bss *bss) | |
846 | { | |
847 | struct wpa_ssid *ssid; | |
848 | ||
849 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
850 | if (ssid->parent_cred != cred) | |
851 | continue; | |
852 | if (ssid->ssid_len != bss->ssid_len || | |
853 | os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0) | |
854 | continue; | |
855 | ||
856 | break; | |
857 | } | |
858 | ||
859 | if (ssid == NULL) | |
860 | return; | |
861 | ||
862 | wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential"); | |
863 | ||
864 | if (ssid == wpa_s->current_ssid) { | |
865 | wpa_sm_set_config(wpa_s->wpa, NULL); | |
866 | eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); | |
867 | wpa_supplicant_deauthenticate(wpa_s, | |
868 | WLAN_REASON_DEAUTH_LEAVING); | |
869 | } | |
870 | ||
871 | wpas_notify_network_removed(wpa_s, ssid); | |
872 | wpa_config_remove_network(wpa_s->conf, ssid->id); | |
873 | } | |
874 | ||
875 | ||
3c8e4ec0 JM |
876 | static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s, |
877 | struct wpa_ssid *ssid) | |
8601b503 | 878 | { |
270c9a43 JM |
879 | const char *key_mgmt = NULL; |
880 | #ifdef CONFIG_IEEE80211R | |
881 | int res; | |
882 | struct wpa_driver_capa capa; | |
883 | ||
884 | res = wpa_drv_get_capa(wpa_s, &capa); | |
885 | if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) { | |
886 | key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ? | |
887 | "WPA-EAP WPA-EAP-SHA256 FT-EAP" : | |
888 | "WPA-EAP FT-EAP"; | |
889 | } | |
890 | #endif /* CONFIG_IEEE80211R */ | |
891 | ||
892 | if (!key_mgmt) | |
893 | key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ? | |
894 | "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP"; | |
895 | if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0) | |
8601b503 JM |
896 | return -1; |
897 | if (wpa_config_set(ssid, "proto", "RSN", 0) < 0) | |
898 | return -1; | |
899 | if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0) | |
900 | return -1; | |
901 | return 0; | |
902 | } | |
903 | ||
904 | ||
3b840b67 | 905 | static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s, |
b618a469 | 906 | struct wpa_cred *cred, |
3b840b67 JM |
907 | struct wpa_bss *bss) |
908 | { | |
909 | #ifdef INTERWORKING_3GPP | |
910 | struct wpa_ssid *ssid; | |
7e414b21 JM |
911 | int eap_type; |
912 | int res; | |
913 | char prefix; | |
3b840b67 | 914 | |
476aed35 | 915 | if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) |
1bb7b8e8 JM |
916 | return -1; |
917 | ||
3b840b67 JM |
918 | wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)", |
919 | MAC2STR(bss->bssid)); | |
920 | ||
d28f4e44 JM |
921 | if (already_connected(wpa_s, cred, bss)) { |
922 | wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, | |
923 | MAC2STR(bss->bssid)); | |
924 | return 0; | |
925 | } | |
926 | ||
6ede8a7e JM |
927 | remove_duplicate_network(wpa_s, cred, bss); |
928 | ||
3b840b67 JM |
929 | ssid = wpa_config_add_network(wpa_s->conf); |
930 | if (ssid == NULL) | |
931 | return -1; | |
736d4f2d | 932 | ssid->parent_cred = cred; |
3b840b67 JM |
933 | |
934 | wpas_notify_network_added(wpa_s, ssid); | |
935 | wpa_config_set_network_defaults(ssid); | |
1a712d2f | 936 | ssid->priority = cred->priority; |
3b840b67 | 937 | ssid->temporary = 1; |
08b26779 | 938 | ssid->ssid = os_zalloc(bss->ssid_len + 1); |
3b840b67 JM |
939 | if (ssid->ssid == NULL) |
940 | goto fail; | |
08b26779 JM |
941 | os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); |
942 | ssid->ssid_len = bss->ssid_len; | |
13f6a07e | 943 | ssid->eap.sim_num = cred->sim_num; |
3b840b67 | 944 | |
3c8e4ec0 | 945 | if (interworking_set_hs20_params(wpa_s, ssid) < 0) |
1ecd2ada JM |
946 | goto fail; |
947 | ||
7e414b21 JM |
948 | eap_type = EAP_TYPE_SIM; |
949 | if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard)) | |
950 | eap_type = EAP_TYPE_AKA; | |
951 | if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) { | |
952 | if (cred->eap_method[0].method == EAP_TYPE_SIM || | |
953 | cred->eap_method[0].method == EAP_TYPE_AKA || | |
954 | cred->eap_method[0].method == EAP_TYPE_AKA_PRIME) | |
955 | eap_type = cred->eap_method[0].method; | |
956 | } | |
957 | ||
958 | switch (eap_type) { | |
959 | case EAP_TYPE_SIM: | |
960 | prefix = '1'; | |
961 | res = wpa_config_set(ssid, "eap", "SIM", 0); | |
962 | break; | |
963 | case EAP_TYPE_AKA: | |
964 | prefix = '0'; | |
965 | res = wpa_config_set(ssid, "eap", "AKA", 0); | |
966 | break; | |
967 | case EAP_TYPE_AKA_PRIME: | |
968 | prefix = '6'; | |
969 | res = wpa_config_set(ssid, "eap", "AKA'", 0); | |
970 | break; | |
971 | default: | |
972 | res = -1; | |
973 | break; | |
974 | } | |
975 | if (res < 0) { | |
976 | wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported", | |
977 | eap_type); | |
3b840b67 JM |
978 | goto fail; |
979 | } | |
7e414b21 JM |
980 | |
981 | if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) { | |
3b840b67 JM |
982 | wpa_printf(MSG_DEBUG, "Failed to set Root NAI"); |
983 | goto fail; | |
984 | } | |
985 | ||
1bb7b8e8 | 986 | if (cred->milenage && cred->milenage[0]) { |
3b840b67 | 987 | if (wpa_config_set_quoted(ssid, "password", |
1bb7b8e8 | 988 | cred->milenage) < 0) |
3b840b67 | 989 | goto fail; |
d7b01abd | 990 | } else if (cred->pcsc) { |
3b840b67 JM |
991 | if (wpa_config_set_quoted(ssid, "pcsc", "") < 0) |
992 | goto fail; | |
d7b01abd JM |
993 | if (wpa_s->conf->pcsc_pin && |
994 | wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin) | |
995 | < 0) | |
996 | goto fail; | |
3b840b67 JM |
997 | } |
998 | ||
3d910ef4 | 999 | wpa_s->next_ssid = ssid; |
1a712d2f | 1000 | wpa_config_update_prio_list(wpa_s->conf); |
08410f08 | 1001 | interworking_reconnect(wpa_s); |
3b840b67 JM |
1002 | |
1003 | return 0; | |
1004 | ||
1005 | fail: | |
1006 | wpas_notify_network_removed(wpa_s, ssid); | |
1007 | wpa_config_remove_network(wpa_s->conf, ssid->id); | |
1008 | #endif /* INTERWORKING_3GPP */ | |
1009 | return -1; | |
1010 | } | |
1011 | ||
1012 | ||
955567bc JM |
1013 | static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id, |
1014 | size_t rc_len) | |
1015 | { | |
1016 | const u8 *pos, *end; | |
1017 | u8 lens; | |
1018 | ||
1019 | if (ie == NULL) | |
1020 | return 0; | |
1021 | ||
1022 | pos = ie + 2; | |
1023 | end = ie + 2 + ie[1]; | |
1024 | ||
1025 | /* Roaming Consortium element: | |
1026 | * Number of ANQP OIs | |
1027 | * OI #1 and #2 lengths | |
1028 | * OI #1, [OI #2], [OI #3] | |
1029 | */ | |
1030 | ||
1031 | if (pos + 2 > end) | |
1032 | return 0; | |
1033 | ||
1034 | pos++; /* skip Number of ANQP OIs */ | |
1035 | lens = *pos++; | |
1036 | if (pos + (lens & 0x0f) + (lens >> 4) > end) | |
1037 | return 0; | |
1038 | ||
1039 | if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) | |
1040 | return 1; | |
1041 | pos += lens & 0x0f; | |
1042 | ||
1043 | if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) | |
1044 | return 1; | |
1045 | pos += lens >> 4; | |
1046 | ||
1047 | if (pos < end && (size_t) (end - pos) == rc_len && | |
1048 | os_memcmp(pos, rc_id, rc_len) == 0) | |
1049 | return 1; | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | ||
1055 | static int roaming_consortium_anqp_match(const struct wpabuf *anqp, | |
1056 | const u8 *rc_id, size_t rc_len) | |
1057 | { | |
1058 | const u8 *pos, *end; | |
1059 | u8 len; | |
1060 | ||
1061 | if (anqp == NULL) | |
1062 | return 0; | |
1063 | ||
1064 | pos = wpabuf_head(anqp); | |
1065 | end = pos + wpabuf_len(anqp); | |
1066 | ||
1067 | /* Set of <OI Length, OI> duples */ | |
1068 | while (pos < end) { | |
1069 | len = *pos++; | |
1070 | if (pos + len > end) | |
1071 | break; | |
1072 | if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) | |
1073 | return 1; | |
1074 | pos += len; | |
1075 | } | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | ||
1081 | static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp, | |
1082 | const u8 *rc_id, size_t rc_len) | |
1083 | { | |
1084 | return roaming_consortium_element_match(ie, rc_id, rc_len) || | |
1085 | roaming_consortium_anqp_match(anqp, rc_id, rc_len); | |
1086 | } | |
1087 | ||
1088 | ||
f47c1452 JM |
1089 | static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss) |
1090 | { | |
1091 | const u8 *ie; | |
1092 | ||
1093 | if (cred->required_roaming_consortium_len == 0) | |
1094 | return 0; | |
1095 | ||
1096 | ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); | |
1097 | ||
1098 | if (ie == NULL && | |
1099 | (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL)) | |
1100 | return 1; | |
1101 | ||
1102 | return !roaming_consortium_match(ie, | |
1103 | bss->anqp ? | |
1104 | bss->anqp->roaming_consortium : NULL, | |
1105 | cred->required_roaming_consortium, | |
1106 | cred->required_roaming_consortium_len); | |
1107 | } | |
1108 | ||
1109 | ||
dbea8ac7 JM |
1110 | static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss) |
1111 | { | |
1112 | size_t i; | |
1113 | ||
1114 | if (!cred->excluded_ssid) | |
1115 | return 0; | |
1116 | ||
1117 | for (i = 0; i < cred->num_excluded_ssid; i++) { | |
1118 | struct excluded_ssid *e = &cred->excluded_ssid[i]; | |
1119 | if (bss->ssid_len == e->ssid_len && | |
1120 | os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0) | |
1121 | return 1; | |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | ||
4cad9df1 JM |
1128 | static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s, |
1129 | struct wpa_cred *cred, struct wpa_bss *bss) | |
1130 | { | |
1131 | int res; | |
1132 | unsigned int dl_bandwidth, ul_bandwidth; | |
1133 | const u8 *wan; | |
1134 | u8 wan_info, dl_load, ul_load; | |
1135 | u16 lmd; | |
1136 | u32 ul_speed, dl_speed; | |
1137 | ||
1138 | if (!cred->min_dl_bandwidth_home && | |
1139 | !cred->min_ul_bandwidth_home && | |
1140 | !cred->min_dl_bandwidth_roaming && | |
1141 | !cred->min_ul_bandwidth_roaming) | |
1142 | return 0; /* No bandwidth constraint specified */ | |
1143 | ||
1144 | if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL) | |
1145 | return 0; /* No WAN Metrics known - ignore constraint */ | |
1146 | ||
1147 | wan = wpabuf_head(bss->anqp->hs20_wan_metrics); | |
1148 | wan_info = wan[0]; | |
1149 | if (wan_info & BIT(3)) | |
1150 | return 1; /* WAN link at capacity */ | |
1151 | lmd = WPA_GET_LE16(wan + 11); | |
1152 | if (lmd == 0) | |
1153 | return 0; /* Downlink/Uplink Load was not measured */ | |
1154 | dl_speed = WPA_GET_LE32(wan + 1); | |
1155 | ul_speed = WPA_GET_LE32(wan + 5); | |
1156 | dl_load = wan[9]; | |
1157 | ul_load = wan[10]; | |
1158 | ||
1159 | if (dl_speed >= 0xffffff) | |
1160 | dl_bandwidth = dl_speed / 255 * (255 - dl_load); | |
1161 | else | |
1162 | dl_bandwidth = dl_speed * (255 - dl_load) / 255; | |
1163 | ||
1164 | if (ul_speed >= 0xffffff) | |
1165 | ul_bandwidth = ul_speed / 255 * (255 - ul_load); | |
1166 | else | |
1167 | ul_bandwidth = ul_speed * (255 - ul_load) / 255; | |
1168 | ||
1169 | res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? | |
1170 | bss->anqp->domain_name : NULL); | |
1171 | if (res > 0) { | |
1172 | if (cred->min_dl_bandwidth_home > dl_bandwidth) | |
1173 | return 1; | |
1174 | if (cred->min_ul_bandwidth_home > ul_bandwidth) | |
1175 | return 1; | |
1176 | } else { | |
1177 | if (cred->min_dl_bandwidth_roaming > dl_bandwidth) | |
1178 | return 1; | |
1179 | if (cred->min_ul_bandwidth_roaming > ul_bandwidth) | |
1180 | return 1; | |
1181 | } | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | ||
a45b2dc5 JM |
1187 | static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s, |
1188 | struct wpa_cred *cred, struct wpa_bss *bss) | |
1189 | { | |
1190 | const u8 *ie; | |
1191 | int res; | |
1192 | ||
1193 | if (!cred->max_bss_load) | |
1194 | return 0; /* No BSS Load constraint specified */ | |
1195 | ||
1196 | ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD); | |
1197 | if (ie == NULL || ie[1] < 3) | |
1198 | return 0; /* No BSS Load advertised */ | |
1199 | ||
1200 | res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? | |
1201 | bss->anqp->domain_name : NULL); | |
1202 | if (res <= 0) | |
1203 | return 0; /* Not a home network */ | |
1204 | ||
1205 | return ie[4] > cred->max_bss_load; | |
1206 | } | |
1207 | ||
1208 | ||
33fb8c52 JM |
1209 | static int has_proto_match(const u8 *pos, const u8 *end, u8 proto) |
1210 | { | |
1211 | while (pos + 4 <= end) { | |
1212 | if (pos[0] == proto && pos[3] == 1 /* Open */) | |
1213 | return 1; | |
1214 | pos += 4; | |
1215 | } | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | ||
1221 | static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto, | |
1222 | u16 port) | |
1223 | { | |
1224 | while (pos + 4 <= end) { | |
1225 | if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port && | |
1226 | pos[3] == 1 /* Open */) | |
1227 | return 1; | |
1228 | pos += 4; | |
1229 | } | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | ||
1235 | static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s, | |
1236 | struct wpa_cred *cred, struct wpa_bss *bss) | |
1237 | { | |
1238 | int res; | |
1239 | const u8 *capab, *end; | |
1240 | unsigned int i, j; | |
1241 | int *ports; | |
1242 | ||
1243 | if (!cred->num_req_conn_capab) | |
1244 | return 0; /* No connection capability constraint specified */ | |
1245 | ||
1246 | if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL) | |
1247 | return 0; /* No Connection Capability known - ignore constraint | |
1248 | */ | |
1249 | ||
1250 | res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? | |
1251 | bss->anqp->domain_name : NULL); | |
1252 | if (res > 0) | |
1253 | return 0; /* No constraint in home network */ | |
1254 | ||
1255 | capab = wpabuf_head(bss->anqp->hs20_connection_capability); | |
1256 | end = capab + wpabuf_len(bss->anqp->hs20_connection_capability); | |
1257 | ||
1258 | for (i = 0; i < cred->num_req_conn_capab; i++) { | |
1259 | ports = cred->req_conn_capab_port[i]; | |
1260 | if (!ports) { | |
1261 | if (!has_proto_match(capab, end, | |
1262 | cred->req_conn_capab_proto[i])) | |
1263 | return 1; | |
1264 | } else { | |
1265 | for (j = 0; ports[j] > -1; j++) { | |
1266 | if (!has_proto_port_match( | |
1267 | capab, end, | |
1268 | cred->req_conn_capab_proto[i], | |
1269 | ports[j])) | |
1270 | return 1; | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | return 0; | |
1276 | } | |
1277 | ||
1278 | ||
955567bc | 1279 | static struct wpa_cred * interworking_credentials_available_roaming_consortium( |
28f2a7c4 JM |
1280 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
1281 | int *excluded) | |
955567bc JM |
1282 | { |
1283 | struct wpa_cred *cred, *selected = NULL; | |
1284 | const u8 *ie; | |
28f2a7c4 | 1285 | int is_excluded = 0; |
955567bc JM |
1286 | |
1287 | ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); | |
1288 | ||
476aed35 JM |
1289 | if (ie == NULL && |
1290 | (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL)) | |
955567bc JM |
1291 | return NULL; |
1292 | ||
1293 | if (wpa_s->conf->cred == NULL) | |
1294 | return NULL; | |
1295 | ||
1296 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
1297 | if (cred->roaming_consortium_len == 0) | |
1298 | continue; | |
1299 | ||
476aed35 JM |
1300 | if (!roaming_consortium_match(ie, |
1301 | bss->anqp ? | |
1302 | bss->anqp->roaming_consortium : | |
1303 | NULL, | |
955567bc JM |
1304 | cred->roaming_consortium, |
1305 | cred->roaming_consortium_len)) | |
1306 | continue; | |
1307 | ||
f47c1452 JM |
1308 | if (cred_no_required_oi_match(cred, bss)) |
1309 | continue; | |
4cad9df1 JM |
1310 | if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss)) |
1311 | continue; | |
a45b2dc5 JM |
1312 | if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss)) |
1313 | continue; | |
33fb8c52 JM |
1314 | if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss)) |
1315 | continue; | |
28f2a7c4 JM |
1316 | if (cred_excluded_ssid(cred, bss)) { |
1317 | if (excluded == NULL) | |
1318 | continue; | |
1319 | if (selected == NULL) { | |
1320 | selected = cred; | |
1321 | is_excluded = 1; | |
1322 | } | |
1323 | } else { | |
1324 | if (selected == NULL || is_excluded || | |
751ac997 | 1325 | cred_prio_cmp(selected, cred) < 0) { |
28f2a7c4 JM |
1326 | selected = cred; |
1327 | is_excluded = 0; | |
1328 | } | |
1329 | } | |
955567bc JM |
1330 | } |
1331 | ||
28f2a7c4 JM |
1332 | if (excluded) |
1333 | *excluded = is_excluded; | |
1334 | ||
955567bc JM |
1335 | return selected; |
1336 | } | |
1337 | ||
1338 | ||
d5b5d801 JM |
1339 | static int interworking_set_eap_params(struct wpa_ssid *ssid, |
1340 | struct wpa_cred *cred, int ttls) | |
1341 | { | |
8ca93c59 JM |
1342 | if (cred->eap_method) { |
1343 | ttls = cred->eap_method->vendor == EAP_VENDOR_IETF && | |
1344 | cred->eap_method->method == EAP_TYPE_TTLS; | |
1345 | ||
1346 | os_free(ssid->eap.eap_methods); | |
1347 | ssid->eap.eap_methods = | |
1348 | os_malloc(sizeof(struct eap_method_type) * 2); | |
1349 | if (ssid->eap.eap_methods == NULL) | |
1350 | return -1; | |
1351 | os_memcpy(ssid->eap.eap_methods, cred->eap_method, | |
1352 | sizeof(*cred->eap_method)); | |
1353 | ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF; | |
1354 | ssid->eap.eap_methods[1].method = EAP_TYPE_NONE; | |
1355 | } | |
1356 | ||
d5b5d801 JM |
1357 | if (ttls && cred->username && cred->username[0]) { |
1358 | const char *pos; | |
1359 | char *anon; | |
1360 | /* Use anonymous NAI in Phase 1 */ | |
1361 | pos = os_strchr(cred->username, '@'); | |
1362 | if (pos) { | |
1363 | size_t buflen = 9 + os_strlen(pos) + 1; | |
1364 | anon = os_malloc(buflen); | |
1365 | if (anon == NULL) | |
1366 | return -1; | |
1367 | os_snprintf(anon, buflen, "anonymous%s", pos); | |
1368 | } else if (cred->realm) { | |
1369 | size_t buflen = 10 + os_strlen(cred->realm) + 1; | |
1370 | anon = os_malloc(buflen); | |
1371 | if (anon == NULL) | |
1372 | return -1; | |
1373 | os_snprintf(anon, buflen, "anonymous@%s", cred->realm); | |
1374 | } else { | |
1375 | anon = os_strdup("anonymous"); | |
1376 | if (anon == NULL) | |
1377 | return -1; | |
1378 | } | |
1379 | if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) < | |
1380 | 0) { | |
1381 | os_free(anon); | |
1382 | return -1; | |
1383 | } | |
1384 | os_free(anon); | |
1385 | } | |
1386 | ||
1387 | if (cred->username && cred->username[0] && | |
1388 | wpa_config_set_quoted(ssid, "identity", cred->username) < 0) | |
1389 | return -1; | |
1390 | ||
02af9c90 JM |
1391 | if (cred->password && cred->password[0]) { |
1392 | if (cred->ext_password && | |
1393 | wpa_config_set(ssid, "password", cred->password, 0) < 0) | |
1394 | return -1; | |
1395 | if (!cred->ext_password && | |
1396 | wpa_config_set_quoted(ssid, "password", cred->password) < | |
1397 | 0) | |
1398 | return -1; | |
1399 | } | |
d5b5d801 JM |
1400 | |
1401 | if (cred->client_cert && cred->client_cert[0] && | |
1402 | wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0) | |
1403 | return -1; | |
1404 | ||
93face0e JM |
1405 | #ifdef ANDROID |
1406 | if (cred->private_key && | |
1407 | os_strncmp(cred->private_key, "keystore://", 11) == 0) { | |
1408 | /* Use OpenSSL engine configuration for Android keystore */ | |
1409 | if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 || | |
1410 | wpa_config_set_quoted(ssid, "key_id", | |
1411 | cred->private_key + 11) < 0 || | |
1412 | wpa_config_set(ssid, "engine", "1", 0) < 0) | |
1413 | return -1; | |
1414 | } else | |
1415 | #endif /* ANDROID */ | |
d5b5d801 JM |
1416 | if (cred->private_key && cred->private_key[0] && |
1417 | wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0) | |
1418 | return -1; | |
1419 | ||
1420 | if (cred->private_key_passwd && cred->private_key_passwd[0] && | |
1421 | wpa_config_set_quoted(ssid, "private_key_passwd", | |
1422 | cred->private_key_passwd) < 0) | |
1423 | return -1; | |
1424 | ||
8ca93c59 JM |
1425 | if (cred->phase1) { |
1426 | os_free(ssid->eap.phase1); | |
1427 | ssid->eap.phase1 = os_strdup(cred->phase1); | |
1428 | } | |
1429 | if (cred->phase2) { | |
1430 | os_free(ssid->eap.phase2); | |
1431 | ssid->eap.phase2 = os_strdup(cred->phase2); | |
1432 | } | |
1433 | ||
d5b5d801 JM |
1434 | if (cred->ca_cert && cred->ca_cert[0] && |
1435 | wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0) | |
1436 | return -1; | |
1437 | ||
ac1bc549 JM |
1438 | if (cred->domain_suffix_match && cred->domain_suffix_match[0] && |
1439 | wpa_config_set_quoted(ssid, "domain_suffix_match", | |
1440 | cred->domain_suffix_match) < 0) | |
1441 | return -1; | |
1442 | ||
cf6d08a6 JM |
1443 | ssid->eap.ocsp = cred->ocsp; |
1444 | ||
d5b5d801 JM |
1445 | return 0; |
1446 | } | |
1447 | ||
1448 | ||
955567bc JM |
1449 | static int interworking_connect_roaming_consortium( |
1450 | struct wpa_supplicant *wpa_s, struct wpa_cred *cred, | |
08b26779 | 1451 | struct wpa_bss *bss) |
955567bc JM |
1452 | { |
1453 | struct wpa_ssid *ssid; | |
1454 | ||
1455 | wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on " | |
1456 | "roaming consortium match", MAC2STR(bss->bssid)); | |
1457 | ||
d28f4e44 JM |
1458 | if (already_connected(wpa_s, cred, bss)) { |
1459 | wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, | |
1460 | MAC2STR(bss->bssid)); | |
1461 | return 0; | |
1462 | } | |
1463 | ||
6ede8a7e JM |
1464 | remove_duplicate_network(wpa_s, cred, bss); |
1465 | ||
955567bc JM |
1466 | ssid = wpa_config_add_network(wpa_s->conf); |
1467 | if (ssid == NULL) | |
1468 | return -1; | |
736d4f2d | 1469 | ssid->parent_cred = cred; |
955567bc JM |
1470 | wpas_notify_network_added(wpa_s, ssid); |
1471 | wpa_config_set_network_defaults(ssid); | |
1472 | ssid->priority = cred->priority; | |
1473 | ssid->temporary = 1; | |
08b26779 | 1474 | ssid->ssid = os_zalloc(bss->ssid_len + 1); |
955567bc JM |
1475 | if (ssid->ssid == NULL) |
1476 | goto fail; | |
08b26779 JM |
1477 | os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); |
1478 | ssid->ssid_len = bss->ssid_len; | |
955567bc | 1479 | |
3c8e4ec0 | 1480 | if (interworking_set_hs20_params(wpa_s, ssid) < 0) |
1ecd2ada JM |
1481 | goto fail; |
1482 | ||
955567bc JM |
1483 | if (cred->eap_method == NULL) { |
1484 | wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for " | |
1485 | "credential using roaming consortium"); | |
1486 | goto fail; | |
1487 | } | |
1488 | ||
1489 | if (interworking_set_eap_params( | |
1490 | ssid, cred, | |
1491 | cred->eap_method->vendor == EAP_VENDOR_IETF && | |
1492 | cred->eap_method->method == EAP_TYPE_TTLS) < 0) | |
1493 | goto fail; | |
1494 | ||
3d910ef4 | 1495 | wpa_s->next_ssid = ssid; |
955567bc JM |
1496 | wpa_config_update_prio_list(wpa_s->conf); |
1497 | interworking_reconnect(wpa_s); | |
1498 | ||
1499 | return 0; | |
1500 | ||
1501 | fail: | |
1502 | wpas_notify_network_removed(wpa_s, ssid); | |
1503 | wpa_config_remove_network(wpa_s->conf, ssid->id); | |
1504 | return -1; | |
1505 | } | |
1506 | ||
1507 | ||
28f2a7c4 JM |
1508 | static int interworking_connect_helper(struct wpa_supplicant *wpa_s, |
1509 | struct wpa_bss *bss, int allow_excluded) | |
b02fe7ff | 1510 | { |
b618a469 | 1511 | struct wpa_cred *cred, *cred_rc, *cred_3gpp; |
67e1b984 JM |
1512 | struct wpa_ssid *ssid; |
1513 | struct nai_realm *realm; | |
1514 | struct nai_realm_eap *eap = NULL; | |
1515 | u16 count, i; | |
1516 | char buf[100]; | |
28f2a7c4 | 1517 | int excluded = 0, *excl = allow_excluded ? &excluded : NULL; |
9c6c5589 | 1518 | const char *name; |
67e1b984 | 1519 | |
1bb7b8e8 | 1520 | if (wpa_s->conf->cred == NULL || bss == NULL) |
b02fe7ff | 1521 | return -1; |
50589751 JM |
1522 | if (disallowed_bssid(wpa_s, bss->bssid) || |
1523 | disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { | |
1524 | wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS " | |
1525 | MACSTR, MAC2STR(bss->bssid)); | |
1526 | return -1; | |
1527 | } | |
67e1b984 | 1528 | |
8b4b9fb3 JM |
1529 | wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR |
1530 | " for connection (allow_excluded=%d)", | |
1531 | MAC2STR(bss->bssid), allow_excluded); | |
1532 | ||
63e5caaa JM |
1533 | if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { |
1534 | /* | |
1535 | * We currently support only HS 2.0 networks and those are | |
1536 | * required to use WPA2-Enterprise. | |
1537 | */ | |
1538 | wpa_printf(MSG_DEBUG, "Interworking: Network does not use " | |
1539 | "RSN"); | |
1540 | return -1; | |
1541 | } | |
1542 | ||
28f2a7c4 JM |
1543 | cred_rc = interworking_credentials_available_roaming_consortium( |
1544 | wpa_s, bss, 0, excl); | |
b618a469 JM |
1545 | if (cred_rc) { |
1546 | wpa_printf(MSG_DEBUG, "Interworking: Highest roaming " | |
74794891 JM |
1547 | "consortium matching credential priority %d " |
1548 | "sp_priority %d", | |
1549 | cred_rc->priority, cred_rc->sp_priority); | |
28f2a7c4 JM |
1550 | if (allow_excluded && excl && !(*excl)) |
1551 | excl = NULL; | |
b618a469 JM |
1552 | } |
1553 | ||
28f2a7c4 | 1554 | cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl); |
b618a469 JM |
1555 | if (cred) { |
1556 | wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list " | |
74794891 JM |
1557 | "matching credential priority %d sp_priority %d", |
1558 | cred->priority, cred->sp_priority); | |
28f2a7c4 JM |
1559 | if (allow_excluded && excl && !(*excl)) |
1560 | excl = NULL; | |
b618a469 JM |
1561 | } |
1562 | ||
28f2a7c4 JM |
1563 | cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0, |
1564 | excl); | |
b618a469 JM |
1565 | if (cred_3gpp) { |
1566 | wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching " | |
74794891 JM |
1567 | "credential priority %d sp_priority %d", |
1568 | cred_3gpp->priority, cred_3gpp->sp_priority); | |
28f2a7c4 JM |
1569 | if (allow_excluded && excl && !(*excl)) |
1570 | excl = NULL; | |
b618a469 JM |
1571 | } |
1572 | ||
4cad9df1 | 1573 | if (!cred_rc && !cred && !cred_3gpp) { |
8b4b9fb3 | 1574 | wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits"); |
4cad9df1 | 1575 | cred_rc = interworking_credentials_available_roaming_consortium( |
28f2a7c4 | 1576 | wpa_s, bss, 1, excl); |
4cad9df1 JM |
1577 | if (cred_rc) { |
1578 | wpa_printf(MSG_DEBUG, "Interworking: Highest roaming " | |
1579 | "consortium matching credential priority %d " | |
74794891 JM |
1580 | "sp_priority %d (ignore BW)", |
1581 | cred_rc->priority, cred_rc->sp_priority); | |
28f2a7c4 JM |
1582 | if (allow_excluded && excl && !(*excl)) |
1583 | excl = NULL; | |
4cad9df1 JM |
1584 | } |
1585 | ||
28f2a7c4 JM |
1586 | cred = interworking_credentials_available_realm(wpa_s, bss, 1, |
1587 | excl); | |
4cad9df1 JM |
1588 | if (cred) { |
1589 | wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm " | |
1590 | "list matching credential priority %d " | |
74794891 JM |
1591 | "sp_priority %d (ignore BW)", |
1592 | cred->priority, cred->sp_priority); | |
28f2a7c4 JM |
1593 | if (allow_excluded && excl && !(*excl)) |
1594 | excl = NULL; | |
4cad9df1 JM |
1595 | } |
1596 | ||
1597 | cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, | |
28f2a7c4 | 1598 | 1, excl); |
4cad9df1 JM |
1599 | if (cred_3gpp) { |
1600 | wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP " | |
74794891 JM |
1601 | "matching credential priority %d " |
1602 | "sp_priority %d (ignore BW)", | |
1603 | cred_3gpp->priority, cred_3gpp->sp_priority); | |
28f2a7c4 JM |
1604 | if (allow_excluded && excl && !(*excl)) |
1605 | excl = NULL; | |
4cad9df1 JM |
1606 | } |
1607 | } | |
1608 | ||
b618a469 | 1609 | if (cred_rc && |
751ac997 JM |
1610 | (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) && |
1611 | (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0)) | |
b618a469 | 1612 | return interworking_connect_roaming_consortium(wpa_s, cred_rc, |
08b26779 | 1613 | bss); |
955567bc | 1614 | |
b618a469 | 1615 | if (cred_3gpp && |
751ac997 | 1616 | (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) { |
b618a469 JM |
1617 | return interworking_connect_3gpp(wpa_s, cred_3gpp, bss); |
1618 | } | |
1619 | ||
1620 | if (cred == NULL) { | |
1621 | wpa_printf(MSG_DEBUG, "Interworking: No matching credentials " | |
1622 | "found for " MACSTR, MAC2STR(bss->bssid)); | |
1623 | return -1; | |
1624 | } | |
1625 | ||
476aed35 JM |
1626 | realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL, |
1627 | &count); | |
67e1b984 JM |
1628 | if (realm == NULL) { |
1629 | wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI " | |
1630 | "Realm list from " MACSTR, MAC2STR(bss->bssid)); | |
b618a469 | 1631 | return -1; |
67e1b984 JM |
1632 | } |
1633 | ||
b618a469 JM |
1634 | for (i = 0; i < count; i++) { |
1635 | if (!nai_realm_match(&realm[i], cred->realm)) | |
1636 | continue; | |
1637 | eap = nai_realm_find_eap(cred, &realm[i]); | |
67e1b984 JM |
1638 | if (eap) |
1639 | break; | |
1640 | } | |
1641 | ||
1642 | if (!eap) { | |
1643 | wpa_printf(MSG_DEBUG, "Interworking: No matching credentials " | |
1644 | "and EAP method found for " MACSTR, | |
1645 | MAC2STR(bss->bssid)); | |
1646 | nai_realm_free(realm, count); | |
1647 | return -1; | |
1648 | } | |
b02fe7ff JM |
1649 | |
1650 | wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR, | |
1651 | MAC2STR(bss->bssid)); | |
67e1b984 | 1652 | |
d28f4e44 JM |
1653 | if (already_connected(wpa_s, cred, bss)) { |
1654 | wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, | |
1655 | MAC2STR(bss->bssid)); | |
1656 | nai_realm_free(realm, count); | |
1657 | return 0; | |
1658 | } | |
1659 | ||
6ede8a7e JM |
1660 | remove_duplicate_network(wpa_s, cred, bss); |
1661 | ||
67e1b984 JM |
1662 | ssid = wpa_config_add_network(wpa_s->conf); |
1663 | if (ssid == NULL) { | |
1664 | nai_realm_free(realm, count); | |
1665 | return -1; | |
1666 | } | |
736d4f2d | 1667 | ssid->parent_cred = cred; |
67e1b984 JM |
1668 | wpas_notify_network_added(wpa_s, ssid); |
1669 | wpa_config_set_network_defaults(ssid); | |
1a712d2f | 1670 | ssid->priority = cred->priority; |
67e1b984 | 1671 | ssid->temporary = 1; |
08b26779 | 1672 | ssid->ssid = os_zalloc(bss->ssid_len + 1); |
67e1b984 JM |
1673 | if (ssid->ssid == NULL) |
1674 | goto fail; | |
08b26779 JM |
1675 | os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); |
1676 | ssid->ssid_len = bss->ssid_len; | |
67e1b984 | 1677 | |
3c8e4ec0 | 1678 | if (interworking_set_hs20_params(wpa_s, ssid) < 0) |
1ecd2ada JM |
1679 | goto fail; |
1680 | ||
67e1b984 JM |
1681 | if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF, |
1682 | eap->method), 0) < 0) | |
1683 | goto fail; | |
1684 | ||
67e1b984 JM |
1685 | switch (eap->method) { |
1686 | case EAP_TYPE_TTLS: | |
1687 | if (eap->inner_method) { | |
1688 | os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", | |
1689 | eap_get_name(EAP_VENDOR_IETF, | |
1690 | eap->inner_method)); | |
1691 | if (wpa_config_set(ssid, "phase2", buf, 0) < 0) | |
1692 | goto fail; | |
1693 | break; | |
1694 | } | |
1695 | switch (eap->inner_non_eap) { | |
1696 | case NAI_REALM_INNER_NON_EAP_PAP: | |
1697 | if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) < | |
1698 | 0) | |
1699 | goto fail; | |
1700 | break; | |
1701 | case NAI_REALM_INNER_NON_EAP_CHAP: | |
1702 | if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0) | |
1703 | < 0) | |
1704 | goto fail; | |
1705 | break; | |
1706 | case NAI_REALM_INNER_NON_EAP_MSCHAP: | |
d3f57d0f JM |
1707 | if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"", |
1708 | 0) < 0) | |
67e1b984 JM |
1709 | goto fail; |
1710 | break; | |
1711 | case NAI_REALM_INNER_NON_EAP_MSCHAPV2: | |
1712 | if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", | |
2047e596 JM |
1713 | 0) < 0) |
1714 | goto fail; | |
1715 | break; | |
1716 | default: | |
1717 | /* EAP params were not set - assume TTLS/MSCHAPv2 */ | |
1718 | if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", | |
67e1b984 JM |
1719 | 0) < 0) |
1720 | goto fail; | |
1721 | break; | |
1722 | } | |
1723 | break; | |
1724 | case EAP_TYPE_PEAP: | |
1f5d2dd3 JM |
1725 | case EAP_TYPE_FAST: |
1726 | if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"", | |
1727 | 0) < 0) | |
1728 | goto fail; | |
1729 | if (wpa_config_set(ssid, "pac_file", | |
1730 | "\"blob://pac_interworking\"", 0) < 0) | |
1731 | goto fail; | |
9c6c5589 JM |
1732 | name = eap_get_name(EAP_VENDOR_IETF, |
1733 | eap->inner_method ? eap->inner_method : | |
1734 | EAP_TYPE_MSCHAPV2); | |
1735 | if (name == NULL) | |
1736 | goto fail; | |
1737 | os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name); | |
67e1b984 JM |
1738 | if (wpa_config_set(ssid, "phase2", buf, 0) < 0) |
1739 | goto fail; | |
1740 | break; | |
11e4f46a JM |
1741 | case EAP_TYPE_TLS: |
1742 | break; | |
67e1b984 JM |
1743 | } |
1744 | ||
d5b5d801 JM |
1745 | if (interworking_set_eap_params(ssid, cred, |
1746 | eap->method == EAP_TYPE_TTLS) < 0) | |
67e1b984 JM |
1747 | goto fail; |
1748 | ||
1749 | nai_realm_free(realm, count); | |
1750 | ||
3d910ef4 | 1751 | wpa_s->next_ssid = ssid; |
1a712d2f | 1752 | wpa_config_update_prio_list(wpa_s->conf); |
08410f08 | 1753 | interworking_reconnect(wpa_s); |
67e1b984 | 1754 | |
b02fe7ff | 1755 | return 0; |
67e1b984 JM |
1756 | |
1757 | fail: | |
1758 | wpas_notify_network_removed(wpa_s, ssid); | |
1759 | wpa_config_remove_network(wpa_s->conf, ssid->id); | |
1760 | nai_realm_free(realm, count); | |
1761 | return -1; | |
b02fe7ff JM |
1762 | } |
1763 | ||
1764 | ||
28f2a7c4 JM |
1765 | int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) |
1766 | { | |
1767 | return interworking_connect_helper(wpa_s, bss, 1); | |
1768 | } | |
1769 | ||
1770 | ||
72300408 JT |
1771 | #ifdef PCSC_FUNCS |
1772 | static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s) | |
1773 | { | |
1774 | size_t len; | |
1775 | ||
1776 | if (wpa_s->imsi[0] && wpa_s->mnc_len) | |
1777 | return 0; | |
1778 | ||
1779 | len = sizeof(wpa_s->imsi) - 1; | |
1780 | if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { | |
1781 | scard_deinit(wpa_s->scard); | |
1782 | wpa_s->scard = NULL; | |
1783 | wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); | |
1784 | return -1; | |
1785 | } | |
1786 | wpa_s->imsi[len] = '\0'; | |
1787 | wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); | |
1788 | wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", | |
1789 | wpa_s->imsi, wpa_s->mnc_len); | |
1790 | ||
1791 | return 0; | |
1792 | } | |
1793 | #endif /* PCSC_FUNCS */ | |
1794 | ||
1795 | ||
1a712d2f | 1796 | static struct wpa_cred * interworking_credentials_available_3gpp( |
28f2a7c4 JM |
1797 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
1798 | int *excluded) | |
3b840b67 | 1799 | { |
ad5dda82 MH |
1800 | struct wpa_cred *selected = NULL; |
1801 | #ifdef INTERWORKING_3GPP | |
1802 | struct wpa_cred *cred; | |
1bb7b8e8 | 1803 | int ret; |
28f2a7c4 | 1804 | int is_excluded = 0; |
3b840b67 | 1805 | |
476aed35 | 1806 | if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) |
1a712d2f | 1807 | return NULL; |
3b840b67 | 1808 | |
efc58df2 NJ |
1809 | #ifdef CONFIG_EAP_PROXY |
1810 | if (!wpa_s->imsi[0]) { | |
1811 | size_t len; | |
1812 | wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy"); | |
1813 | wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, | |
1814 | wpa_s->imsi, | |
1815 | &len); | |
1816 | if (wpa_s->mnc_len > 0) { | |
1817 | wpa_s->imsi[len] = '\0'; | |
1818 | wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)", | |
1819 | wpa_s->imsi, wpa_s->mnc_len); | |
1820 | } else { | |
1821 | wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available"); | |
1822 | } | |
1823 | } | |
1824 | #endif /* CONFIG_EAP_PROXY */ | |
1825 | ||
1bb7b8e8 | 1826 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { |
c21246f5 | 1827 | char *sep; |
d7b01abd JM |
1828 | const char *imsi; |
1829 | int mnc_len; | |
0b9d3b22 JM |
1830 | char imsi_buf[16]; |
1831 | size_t msin_len; | |
d7b01abd JM |
1832 | |
1833 | #ifdef PCSC_FUNCS | |
72300408 JT |
1834 | if (cred->pcsc && wpa_s->scard) { |
1835 | if (interworking_pcsc_read_imsi(wpa_s) < 0) | |
1836 | continue; | |
d7b01abd JM |
1837 | imsi = wpa_s->imsi; |
1838 | mnc_len = wpa_s->mnc_len; | |
1839 | goto compare; | |
1840 | } | |
1841 | #endif /* PCSC_FUNCS */ | |
ec7b97ab JM |
1842 | #ifdef CONFIG_EAP_PROXY |
1843 | if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { | |
1844 | imsi = wpa_s->imsi; | |
1845 | mnc_len = wpa_s->mnc_len; | |
1846 | goto compare; | |
1847 | } | |
1848 | #endif /* CONFIG_EAP_PROXY */ | |
c21246f5 | 1849 | |
1bb7b8e8 | 1850 | if (cred->imsi == NULL || !cred->imsi[0] || |
a5d44ac0 JM |
1851 | (!wpa_s->conf->external_sim && |
1852 | (cred->milenage == NULL || !cred->milenage[0]))) | |
1bb7b8e8 | 1853 | continue; |
3b840b67 | 1854 | |
c21246f5 JM |
1855 | sep = os_strchr(cred->imsi, '-'); |
1856 | if (sep == NULL || | |
1857 | (sep - cred->imsi != 5 && sep - cred->imsi != 6)) | |
1858 | continue; | |
d7b01abd | 1859 | mnc_len = sep - cred->imsi - 3; |
0b9d3b22 JM |
1860 | os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len); |
1861 | sep++; | |
1862 | msin_len = os_strlen(cred->imsi); | |
1863 | if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1) | |
1864 | msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1; | |
1865 | os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len); | |
1866 | imsi_buf[3 + mnc_len + msin_len] = '\0'; | |
1867 | imsi = imsi_buf; | |
c21246f5 | 1868 | |
ec7b97ab | 1869 | #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY) |
d7b01abd | 1870 | compare: |
ec7b97ab | 1871 | #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */ |
1bb7b8e8 JM |
1872 | wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from " |
1873 | MACSTR, MAC2STR(bss->bssid)); | |
476aed35 | 1874 | ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len); |
1bb7b8e8 | 1875 | wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not "); |
1a712d2f | 1876 | if (ret) { |
f47c1452 JM |
1877 | if (cred_no_required_oi_match(cred, bss)) |
1878 | continue; | |
4cad9df1 JM |
1879 | if (!ignore_bw && |
1880 | cred_below_min_backhaul(wpa_s, cred, bss)) | |
1881 | continue; | |
a45b2dc5 JM |
1882 | if (!ignore_bw && |
1883 | cred_over_max_bss_load(wpa_s, cred, bss)) | |
1884 | continue; | |
33fb8c52 JM |
1885 | if (!ignore_bw && |
1886 | cred_conn_capab_missing(wpa_s, cred, bss)) | |
1887 | continue; | |
28f2a7c4 JM |
1888 | if (cred_excluded_ssid(cred, bss)) { |
1889 | if (excluded == NULL) | |
1890 | continue; | |
1891 | if (selected == NULL) { | |
1892 | selected = cred; | |
1893 | is_excluded = 1; | |
1894 | } | |
1895 | } else { | |
1896 | if (selected == NULL || is_excluded || | |
751ac997 | 1897 | cred_prio_cmp(selected, cred) < 0) { |
28f2a7c4 JM |
1898 | selected = cred; |
1899 | is_excluded = 0; | |
1900 | } | |
1901 | } | |
1a712d2f | 1902 | } |
1bb7b8e8 | 1903 | } |
28f2a7c4 JM |
1904 | |
1905 | if (excluded) | |
1906 | *excluded = is_excluded; | |
3b840b67 | 1907 | #endif /* INTERWORKING_3GPP */ |
1a712d2f | 1908 | return selected; |
3b840b67 JM |
1909 | } |
1910 | ||
1911 | ||
1a712d2f | 1912 | static struct wpa_cred * interworking_credentials_available_realm( |
28f2a7c4 JM |
1913 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
1914 | int *excluded) | |
73c41a8f | 1915 | { |
1a712d2f | 1916 | struct wpa_cred *cred, *selected = NULL; |
73c41a8f JM |
1917 | struct nai_realm *realm; |
1918 | u16 count, i; | |
28f2a7c4 | 1919 | int is_excluded = 0; |
73c41a8f | 1920 | |
476aed35 | 1921 | if (bss->anqp == NULL || bss->anqp->nai_realm == NULL) |
1a712d2f | 1922 | return NULL; |
73c41a8f | 1923 | |
1bb7b8e8 | 1924 | if (wpa_s->conf->cred == NULL) |
1a712d2f | 1925 | return NULL; |
73c41a8f JM |
1926 | |
1927 | wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from " | |
1928 | MACSTR, MAC2STR(bss->bssid)); | |
476aed35 | 1929 | realm = nai_realm_parse(bss->anqp->nai_realm, &count); |
73c41a8f JM |
1930 | if (realm == NULL) { |
1931 | wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI " | |
1932 | "Realm list from " MACSTR, MAC2STR(bss->bssid)); | |
1a712d2f | 1933 | return NULL; |
73c41a8f JM |
1934 | } |
1935 | ||
1bb7b8e8 JM |
1936 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { |
1937 | if (cred->realm == NULL) | |
67e1b984 | 1938 | continue; |
1bb7b8e8 JM |
1939 | |
1940 | for (i = 0; i < count; i++) { | |
1941 | if (!nai_realm_match(&realm[i], cred->realm)) | |
1942 | continue; | |
1943 | if (nai_realm_find_eap(cred, &realm[i])) { | |
f47c1452 JM |
1944 | if (cred_no_required_oi_match(cred, bss)) |
1945 | continue; | |
4cad9df1 JM |
1946 | if (!ignore_bw && |
1947 | cred_below_min_backhaul(wpa_s, cred, bss)) | |
1948 | continue; | |
a45b2dc5 JM |
1949 | if (!ignore_bw && |
1950 | cred_over_max_bss_load(wpa_s, cred, bss)) | |
1951 | continue; | |
33fb8c52 JM |
1952 | if (!ignore_bw && |
1953 | cred_conn_capab_missing(wpa_s, cred, bss)) | |
1954 | continue; | |
28f2a7c4 JM |
1955 | if (cred_excluded_ssid(cred, bss)) { |
1956 | if (excluded == NULL) | |
1957 | continue; | |
1958 | if (selected == NULL) { | |
1959 | selected = cred; | |
1960 | is_excluded = 1; | |
1961 | } | |
1962 | } else { | |
1963 | if (selected == NULL || is_excluded || | |
751ac997 JM |
1964 | cred_prio_cmp(selected, cred) < 0) |
1965 | { | |
28f2a7c4 JM |
1966 | selected = cred; |
1967 | is_excluded = 0; | |
1968 | } | |
1969 | } | |
1bb7b8e8 JM |
1970 | break; |
1971 | } | |
73c41a8f JM |
1972 | } |
1973 | } | |
1974 | ||
1975 | nai_realm_free(realm, count); | |
1976 | ||
28f2a7c4 JM |
1977 | if (excluded) |
1978 | *excluded = is_excluded; | |
1979 | ||
1a712d2f | 1980 | return selected; |
73c41a8f JM |
1981 | } |
1982 | ||
1983 | ||
4cad9df1 | 1984 | static struct wpa_cred * interworking_credentials_available_helper( |
28f2a7c4 JM |
1985 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, |
1986 | int *excluded) | |
3b840b67 | 1987 | { |
1a712d2f | 1988 | struct wpa_cred *cred, *cred2; |
28f2a7c4 | 1989 | int excluded1, excluded2; |
1a712d2f | 1990 | |
50589751 JM |
1991 | if (disallowed_bssid(wpa_s, bss->bssid) || |
1992 | disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { | |
1993 | wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS " | |
1994 | MACSTR, MAC2STR(bss->bssid)); | |
1995 | return NULL; | |
1996 | } | |
1997 | ||
28f2a7c4 JM |
1998 | cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw, |
1999 | &excluded1); | |
2000 | cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw, | |
2001 | &excluded2); | |
2002 | if (cred && cred2 && | |
751ac997 | 2003 | (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { |
1a712d2f | 2004 | cred = cred2; |
28f2a7c4 JM |
2005 | excluded1 = excluded2; |
2006 | } | |
2007 | if (!cred) { | |
1a712d2f | 2008 | cred = cred2; |
28f2a7c4 JM |
2009 | excluded1 = excluded2; |
2010 | } | |
1a712d2f | 2011 | |
28f2a7c4 JM |
2012 | cred2 = interworking_credentials_available_roaming_consortium( |
2013 | wpa_s, bss, ignore_bw, &excluded2); | |
2014 | if (cred && cred2 && | |
751ac997 | 2015 | (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { |
955567bc | 2016 | cred = cred2; |
28f2a7c4 JM |
2017 | excluded1 = excluded2; |
2018 | } | |
2019 | if (!cred) { | |
955567bc | 2020 | cred = cred2; |
28f2a7c4 JM |
2021 | excluded1 = excluded2; |
2022 | } | |
955567bc | 2023 | |
28f2a7c4 JM |
2024 | if (excluded) |
2025 | *excluded = excluded1; | |
1a712d2f | 2026 | return cred; |
3b840b67 JM |
2027 | } |
2028 | ||
2029 | ||
4cad9df1 | 2030 | static struct wpa_cred * interworking_credentials_available( |
28f2a7c4 | 2031 | struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded) |
4cad9df1 JM |
2032 | { |
2033 | struct wpa_cred *cred; | |
2034 | ||
28f2a7c4 JM |
2035 | if (excluded) |
2036 | *excluded = 0; | |
2037 | cred = interworking_credentials_available_helper(wpa_s, bss, 0, | |
2038 | excluded); | |
4cad9df1 JM |
2039 | if (cred) |
2040 | return cred; | |
28f2a7c4 JM |
2041 | return interworking_credentials_available_helper(wpa_s, bss, 1, |
2042 | excluded); | |
4cad9df1 JM |
2043 | } |
2044 | ||
2045 | ||
aa26ba68 JM |
2046 | int domain_name_list_contains(struct wpabuf *domain_names, |
2047 | const char *domain, int exact_match) | |
00bf219d JM |
2048 | { |
2049 | const u8 *pos, *end; | |
2050 | size_t len; | |
2051 | ||
9914c96f | 2052 | len = os_strlen(domain); |
00bf219d JM |
2053 | pos = wpabuf_head(domain_names); |
2054 | end = pos + wpabuf_len(domain_names); | |
2055 | ||
2056 | while (pos + 1 < end) { | |
2057 | if (pos + 1 + pos[0] > end) | |
2058 | break; | |
2059 | ||
9914c96f JM |
2060 | wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name", |
2061 | pos + 1, pos[0]); | |
00bf219d | 2062 | if (pos[0] == len && |
9914c96f | 2063 | os_strncasecmp(domain, (const char *) (pos + 1), len) == 0) |
00bf219d | 2064 | return 1; |
bc00053c JM |
2065 | if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') { |
2066 | const char *ap = (const char *) (pos + 1); | |
2067 | int offset = pos[0] - len; | |
2068 | if (os_strncasecmp(domain, ap + offset, len) == 0) | |
2069 | return 1; | |
2070 | } | |
00bf219d JM |
2071 | |
2072 | pos += 1 + pos[0]; | |
2073 | } | |
2074 | ||
2075 | return 0; | |
2076 | } | |
2077 | ||
2078 | ||
e99b4f3a JM |
2079 | int interworking_home_sp_cred(struct wpa_supplicant *wpa_s, |
2080 | struct wpa_cred *cred, | |
2081 | struct wpabuf *domain_names) | |
9914c96f | 2082 | { |
463c8ffb | 2083 | size_t i; |
7617388e | 2084 | int ret = -1; |
9914c96f JM |
2085 | #ifdef INTERWORKING_3GPP |
2086 | char nai[100], *realm; | |
9914c96f | 2087 | |
e99b4f3a JM |
2088 | char *imsi = NULL; |
2089 | int mnc_len = 0; | |
2090 | if (cred->imsi) | |
2091 | imsi = cred->imsi; | |
729897a3 | 2092 | #ifdef PCSC_FUNCS |
72300408 JT |
2093 | else if (cred->pcsc && wpa_s->scard) { |
2094 | if (interworking_pcsc_read_imsi(wpa_s) < 0) | |
2095 | return -1; | |
e99b4f3a JM |
2096 | imsi = wpa_s->imsi; |
2097 | mnc_len = wpa_s->mnc_len; | |
2098 | } | |
729897a3 | 2099 | #endif /* PCSC_FUNCS */ |
e241b1b4 JM |
2100 | #ifdef CONFIG_EAP_PROXY |
2101 | else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { | |
2102 | imsi = wpa_s->imsi; | |
2103 | mnc_len = wpa_s->mnc_len; | |
2104 | } | |
2105 | #endif /* CONFIG_EAP_PROXY */ | |
953d25ca JM |
2106 | if (domain_names && |
2107 | imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) { | |
e99b4f3a JM |
2108 | realm = os_strchr(nai, '@'); |
2109 | if (realm) | |
2110 | realm++; | |
2111 | wpa_printf(MSG_DEBUG, "Interworking: Search for match " | |
2112 | "with SIM/USIM domain %s", realm); | |
2113 | if (realm && | |
bc00053c | 2114 | domain_name_list_contains(domain_names, realm, 1)) |
e99b4f3a | 2115 | return 1; |
7617388e JM |
2116 | if (realm) |
2117 | ret = 0; | |
e99b4f3a | 2118 | } |
1bb7b8e8 JM |
2119 | #endif /* INTERWORKING_3GPP */ |
2120 | ||
953d25ca | 2121 | if (domain_names == NULL || cred->domain == NULL) |
7617388e | 2122 | return ret; |
1bb7b8e8 | 2123 | |
463c8ffb JM |
2124 | for (i = 0; i < cred->num_domain; i++) { |
2125 | wpa_printf(MSG_DEBUG, "Interworking: Search for match with " | |
2126 | "home SP FQDN %s", cred->domain[i]); | |
bc00053c | 2127 | if (domain_name_list_contains(domain_names, cred->domain[i], 1)) |
463c8ffb JM |
2128 | return 1; |
2129 | } | |
e99b4f3a JM |
2130 | |
2131 | return 0; | |
2132 | } | |
2133 | ||
2134 | ||
2135 | static int interworking_home_sp(struct wpa_supplicant *wpa_s, | |
2136 | struct wpabuf *domain_names) | |
2137 | { | |
2138 | struct wpa_cred *cred; | |
2139 | ||
2140 | if (domain_names == NULL || wpa_s->conf->cred == NULL) | |
2141 | return -1; | |
2142 | ||
2143 | for (cred = wpa_s->conf->cred; cred; cred = cred->next) { | |
2144 | int res = interworking_home_sp_cred(wpa_s, cred, domain_names); | |
2145 | if (res) | |
2146 | return res; | |
9914c96f | 2147 | } |
9914c96f | 2148 | |
1bb7b8e8 | 2149 | return 0; |
9914c96f JM |
2150 | } |
2151 | ||
2152 | ||
5ed7880d JM |
2153 | static int interworking_find_network_match(struct wpa_supplicant *wpa_s) |
2154 | { | |
2155 | struct wpa_bss *bss; | |
2156 | struct wpa_ssid *ssid; | |
2157 | ||
2158 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
2159 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
349493bd | 2160 | if (wpas_network_disabled(wpa_s, ssid) || |
fea7c3a0 | 2161 | ssid->mode != WPAS_MODE_INFRA) |
5ed7880d JM |
2162 | continue; |
2163 | if (ssid->ssid_len != bss->ssid_len || | |
2164 | os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != | |
2165 | 0) | |
2166 | continue; | |
2167 | /* | |
2168 | * TODO: Consider more accurate matching of security | |
2169 | * configuration similarly to what is done in events.c | |
2170 | */ | |
2171 | return 1; | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | ||
bc00053c JM |
2179 | static int roaming_partner_match(struct wpa_supplicant *wpa_s, |
2180 | struct roaming_partner *partner, | |
2181 | struct wpabuf *domain_names) | |
2182 | { | |
6402f2fe JM |
2183 | wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'", |
2184 | partner->fqdn, partner->exact_match, partner->priority, | |
2185 | partner->country); | |
2186 | wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names", | |
2187 | wpabuf_head(domain_names), | |
2188 | wpabuf_len(domain_names)); | |
bc00053c JM |
2189 | if (!domain_name_list_contains(domain_names, partner->fqdn, |
2190 | partner->exact_match)) | |
2191 | return 0; | |
2192 | /* TODO: match Country */ | |
2193 | return 1; | |
2194 | } | |
2195 | ||
2196 | ||
2197 | static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred, | |
2198 | struct wpa_bss *bss) | |
2199 | { | |
2200 | size_t i; | |
2201 | ||
6402f2fe JM |
2202 | if (bss->anqp == NULL || bss->anqp->domain_name == NULL) { |
2203 | wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128"); | |
bc00053c | 2204 | return 128; /* cannot check preference with domain name */ |
6402f2fe | 2205 | } |
bc00053c JM |
2206 | |
2207 | if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0) | |
6402f2fe JM |
2208 | { |
2209 | wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority"); | |
bc00053c | 2210 | return 0; /* max preference for home SP network */ |
6402f2fe | 2211 | } |
bc00053c JM |
2212 | |
2213 | for (i = 0; i < cred->num_roaming_partner; i++) { | |
2214 | if (roaming_partner_match(wpa_s, &cred->roaming_partner[i], | |
6402f2fe JM |
2215 | bss->anqp->domain_name)) { |
2216 | wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u", | |
2217 | cred->roaming_partner[i].priority); | |
bc00053c | 2218 | return cred->roaming_partner[i].priority; |
6402f2fe | 2219 | } |
bc00053c JM |
2220 | } |
2221 | ||
6402f2fe | 2222 | wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128"); |
bc00053c JM |
2223 | return 128; |
2224 | } | |
2225 | ||
2226 | ||
2227 | static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s, | |
2228 | struct wpa_bss *selected, | |
2229 | struct wpa_cred *cred) | |
2230 | { | |
2231 | struct wpa_bss *bss; | |
2232 | u8 best_prio, prio; | |
8b4b9fb3 | 2233 | struct wpa_cred *cred2; |
bc00053c JM |
2234 | |
2235 | /* | |
2236 | * Check if any other BSS is operated by a more preferred roaming | |
2237 | * partner. | |
2238 | */ | |
2239 | ||
2240 | best_prio = roaming_prio(wpa_s, cred, selected); | |
76a55a8e JM |
2241 | wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS " |
2242 | MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid), | |
2243 | cred->id); | |
bc00053c JM |
2244 | |
2245 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
2246 | if (bss == selected) | |
2247 | continue; | |
8b4b9fb3 JM |
2248 | cred2 = interworking_credentials_available(wpa_s, bss, NULL); |
2249 | if (!cred2) | |
bc00053c JM |
2250 | continue; |
2251 | if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) | |
2252 | continue; | |
8b4b9fb3 | 2253 | prio = roaming_prio(wpa_s, cred2, bss); |
76a55a8e JM |
2254 | wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS " |
2255 | MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid), | |
2256 | cred2->id); | |
bc00053c | 2257 | if (prio < best_prio) { |
8b4b9fb3 JM |
2258 | int bh1, bh2, load1, load2, conn1, conn2; |
2259 | bh1 = cred_below_min_backhaul(wpa_s, cred, selected); | |
2260 | load1 = cred_over_max_bss_load(wpa_s, cred, selected); | |
2261 | conn1 = cred_conn_capab_missing(wpa_s, cred, selected); | |
2262 | bh2 = cred_below_min_backhaul(wpa_s, cred2, bss); | |
2263 | load2 = cred_over_max_bss_load(wpa_s, cred2, bss); | |
2264 | conn2 = cred_conn_capab_missing(wpa_s, cred2, bss); | |
76a55a8e JM |
2265 | wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d", |
2266 | bh1, load1, conn1, bh2, load2, conn2); | |
8b4b9fb3 JM |
2267 | if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) { |
2268 | wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid)); | |
2269 | best_prio = prio; | |
2270 | selected = bss; | |
2271 | } | |
bc00053c JM |
2272 | } |
2273 | } | |
2274 | ||
bc00053c JM |
2275 | return selected; |
2276 | } | |
2277 | ||
2278 | ||
b02fe7ff JM |
2279 | static void interworking_select_network(struct wpa_supplicant *wpa_s) |
2280 | { | |
00bf219d | 2281 | struct wpa_bss *bss, *selected = NULL, *selected_home = NULL; |
8b4b9fb3 | 2282 | struct wpa_bss *selected2 = NULL, *selected2_home = NULL; |
b02fe7ff | 2283 | unsigned int count = 0; |
00bf219d JM |
2284 | const char *type; |
2285 | int res; | |
bc00053c JM |
2286 | struct wpa_cred *cred, *selected_cred = NULL; |
2287 | struct wpa_cred *selected_home_cred = NULL; | |
8b4b9fb3 JM |
2288 | struct wpa_cred *selected2_cred = NULL; |
2289 | struct wpa_cred *selected2_home_cred = NULL; | |
b02fe7ff JM |
2290 | |
2291 | wpa_s->network_select = 0; | |
2292 | ||
76a55a8e JM |
2293 | wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)", |
2294 | wpa_s->auto_select); | |
b02fe7ff | 2295 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { |
28f2a7c4 | 2296 | int excluded = 0; |
8b4b9fb3 | 2297 | int bh, bss_load, conn_capab; |
28f2a7c4 JM |
2298 | cred = interworking_credentials_available(wpa_s, bss, |
2299 | &excluded); | |
1a712d2f | 2300 | if (!cred) |
b02fe7ff | 2301 | continue; |
63e5caaa JM |
2302 | if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { |
2303 | /* | |
2304 | * We currently support only HS 2.0 networks and those | |
2305 | * are required to use WPA2-Enterprise. | |
2306 | */ | |
2307 | wpa_printf(MSG_DEBUG, "Interworking: Credential match " | |
2308 | "with " MACSTR " but network does not use " | |
2309 | "RSN", MAC2STR(bss->bssid)); | |
2310 | continue; | |
2311 | } | |
28f2a7c4 JM |
2312 | if (!excluded) |
2313 | count++; | |
476aed35 JM |
2314 | res = interworking_home_sp(wpa_s, bss->anqp ? |
2315 | bss->anqp->domain_name : NULL); | |
00bf219d JM |
2316 | if (res > 0) |
2317 | type = "home"; | |
2318 | else if (res == 0) | |
2319 | type = "roaming"; | |
2320 | else | |
2321 | type = "unknown"; | |
8b4b9fb3 JM |
2322 | bh = cred_below_min_backhaul(wpa_s, cred, bss); |
2323 | bss_load = cred_over_max_bss_load(wpa_s, cred, bss); | |
2324 | conn_capab = cred_conn_capab_missing(wpa_s, cred, bss); | |
74794891 | 2325 | wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d", |
28f2a7c4 | 2326 | excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP, |
4cad9df1 | 2327 | MAC2STR(bss->bssid), type, |
8b4b9fb3 JM |
2328 | bh ? " below_min_backhaul=1" : "", |
2329 | bss_load ? " over_max_bss_load=1" : "", | |
76a55a8e | 2330 | conn_capab ? " conn_capab_missing=1" : "", |
74794891 | 2331 | cred->id, cred->priority, cred->sp_priority); |
28f2a7c4 JM |
2332 | if (excluded) |
2333 | continue; | |
4d5bda5f JM |
2334 | if (wpa_s->auto_select || |
2335 | (wpa_s->conf->auto_interworking && | |
2336 | wpa_s->auto_network_select)) { | |
8b4b9fb3 | 2337 | if (bh || bss_load || conn_capab) { |
aff419f5 | 2338 | if (selected2_cred == NULL || |
751ac997 | 2339 | cred_prio_cmp(cred, selected2_cred) > 0) { |
76a55a8e | 2340 | wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2"); |
8b4b9fb3 | 2341 | selected2 = bss; |
8b4b9fb3 JM |
2342 | selected2_cred = cred; |
2343 | } | |
2344 | if (res > 0 && | |
aff419f5 | 2345 | (selected2_home_cred == NULL || |
751ac997 JM |
2346 | cred_prio_cmp(cred, selected2_home_cred) > |
2347 | 0)) { | |
76a55a8e | 2348 | wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home"); |
8b4b9fb3 | 2349 | selected2_home = bss; |
8b4b9fb3 JM |
2350 | selected2_home_cred = cred; |
2351 | } | |
2352 | } else { | |
aff419f5 | 2353 | if (selected_cred == NULL || |
751ac997 | 2354 | cred_prio_cmp(cred, selected_cred) > 0) { |
76a55a8e | 2355 | wpa_printf(MSG_DEBUG, "Interworking: Mark as selected"); |
8b4b9fb3 | 2356 | selected = bss; |
8b4b9fb3 JM |
2357 | selected_cred = cred; |
2358 | } | |
2359 | if (res > 0 && | |
aff419f5 | 2360 | (selected_home_cred == NULL || |
751ac997 JM |
2361 | cred_prio_cmp(cred, selected_home_cred) > |
2362 | 0)) { | |
76a55a8e | 2363 | wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home"); |
8b4b9fb3 | 2364 | selected_home = bss; |
8b4b9fb3 JM |
2365 | selected_home_cred = cred; |
2366 | } | |
1a712d2f | 2367 | } |
00bf219d JM |
2368 | } |
2369 | } | |
2370 | ||
1a712d2f | 2371 | if (selected_home && selected_home != selected && |
aff419f5 JM |
2372 | selected_home_cred && |
2373 | (selected_cred == NULL || | |
751ac997 | 2374 | cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) { |
00bf219d | 2375 | /* Prefer network operated by the Home SP */ |
76a55a8e | 2376 | wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home"); |
00bf219d | 2377 | selected = selected_home; |
bc00053c | 2378 | selected_cred = selected_home_cred; |
b02fe7ff JM |
2379 | } |
2380 | ||
8b4b9fb3 JM |
2381 | if (!selected) { |
2382 | if (selected2_home) { | |
2383 | wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected"); | |
2384 | selected = selected2_home; | |
2385 | selected_cred = selected2_home_cred; | |
2386 | } else if (selected2) { | |
2387 | wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected"); | |
2388 | selected = selected2; | |
2389 | selected_cred = selected2_cred; | |
2390 | } | |
2391 | } | |
2392 | ||
b02fe7ff | 2393 | if (count == 0) { |
5ed7880d JM |
2394 | /* |
2395 | * No matching network was found based on configured | |
2396 | * credentials. Check whether any of the enabled network blocks | |
2397 | * have matching APs. | |
2398 | */ | |
2399 | if (interworking_find_network_match(wpa_s)) { | |
2400 | wpa_printf(MSG_DEBUG, "Interworking: Possible BSS " | |
2401 | "match for enabled network configurations"); | |
b77aeae7 | 2402 | if (wpa_s->auto_select) { |
2b95f57b | 2403 | interworking_reconnect(wpa_s); |
b77aeae7 MK |
2404 | return; |
2405 | } | |
5ed7880d JM |
2406 | } |
2407 | ||
4d5bda5f JM |
2408 | if (wpa_s->auto_network_select) { |
2409 | wpa_printf(MSG_DEBUG, "Interworking: Continue " | |
2410 | "scanning after ANQP fetch"); | |
2411 | wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, | |
2412 | 0); | |
2413 | return; | |
2414 | } | |
2415 | ||
b02fe7ff JM |
2416 | wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network " |
2417 | "with matching credentials found"); | |
2418 | } | |
2419 | ||
bc00053c | 2420 | if (selected) { |
76a55a8e JM |
2421 | wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR, |
2422 | MAC2STR(selected->bssid)); | |
bc00053c JM |
2423 | selected = pick_best_roaming_partner(wpa_s, selected, |
2424 | selected_cred); | |
76a55a8e JM |
2425 | wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR |
2426 | " (after best roaming partner selection)", | |
2427 | MAC2STR(selected->bssid)); | |
2428 | wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR, | |
2429 | MAC2STR(selected->bssid)); | |
b02fe7ff | 2430 | interworking_connect(wpa_s, selected); |
bc00053c | 2431 | } |
b02fe7ff JM |
2432 | } |
2433 | ||
2434 | ||
53c9fc1d JM |
2435 | static struct wpa_bss_anqp * |
2436 | interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) | |
2437 | { | |
2438 | struct wpa_bss *other; | |
2439 | ||
2440 | if (is_zero_ether_addr(bss->hessid)) | |
2441 | return NULL; /* Cannot be in the same homegenous ESS */ | |
2442 | ||
2443 | dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) { | |
2444 | if (other == bss) | |
2445 | continue; | |
2446 | if (other->anqp == NULL) | |
2447 | continue; | |
569d43c7 JM |
2448 | if (other->anqp->roaming_consortium == NULL && |
2449 | other->anqp->nai_realm == NULL && | |
2450 | other->anqp->anqp_3gpp == NULL && | |
2451 | other->anqp->domain_name == NULL) | |
2452 | continue; | |
53c9fc1d JM |
2453 | if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED)) |
2454 | continue; | |
2455 | if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0) | |
2456 | continue; | |
2457 | if (bss->ssid_len != other->ssid_len || | |
2458 | os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0) | |
2459 | continue; | |
2460 | ||
2461 | wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with " | |
2462 | "already fetched BSSID " MACSTR " and " MACSTR, | |
2463 | MAC2STR(other->bssid), MAC2STR(bss->bssid)); | |
2464 | other->anqp->users++; | |
2465 | return other->anqp; | |
2466 | } | |
2467 | ||
2468 | return NULL; | |
2469 | } | |
2470 | ||
2471 | ||
afc064fe JM |
2472 | static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s) |
2473 | { | |
2474 | struct wpa_bss *bss; | |
2475 | int found = 0; | |
2476 | const u8 *ie; | |
2477 | ||
b572df86 JM |
2478 | wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - " |
2479 | "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d", | |
2480 | wpa_s->fetch_anqp_in_progress, | |
2481 | wpa_s->fetch_osu_icon_in_progress); | |
2482 | ||
2483 | if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) { | |
2484 | wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch"); | |
afc064fe | 2485 | return; |
b572df86 JM |
2486 | } |
2487 | ||
2488 | if (wpa_s->fetch_osu_icon_in_progress) { | |
2489 | wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)"); | |
2490 | hs20_next_osu_icon(wpa_s); | |
2491 | return; | |
2492 | } | |
afc064fe JM |
2493 | |
2494 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
2495 | if (!(bss->caps & IEEE80211_CAP_ESS)) | |
2496 | continue; | |
2497 | ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB); | |
2498 | if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80)) | |
2499 | continue; /* AP does not support Interworking */ | |
50589751 JM |
2500 | if (disallowed_bssid(wpa_s, bss->bssid) || |
2501 | disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) | |
2502 | continue; /* Disallowed BSS */ | |
afc064fe JM |
2503 | |
2504 | if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) { | |
476aed35 | 2505 | if (bss->anqp == NULL) { |
53c9fc1d JM |
2506 | bss->anqp = interworking_match_anqp_info(wpa_s, |
2507 | bss); | |
2508 | if (bss->anqp) { | |
2509 | /* Shared data already fetched */ | |
2510 | continue; | |
2511 | } | |
476aed35 JM |
2512 | bss->anqp = wpa_bss_anqp_alloc(); |
2513 | if (bss->anqp == NULL) | |
2514 | break; | |
2515 | } | |
afc064fe JM |
2516 | found++; |
2517 | bss->flags |= WPA_BSS_ANQP_FETCH_TRIED; | |
2518 | wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for " | |
2519 | MACSTR, MAC2STR(bss->bssid)); | |
2520 | interworking_anqp_send_req(wpa_s, bss); | |
2521 | break; | |
2522 | } | |
2523 | } | |
2524 | ||
2525 | if (found == 0) { | |
b572df86 | 2526 | if (wpa_s->fetch_osu_info) { |
a6739e19 JM |
2527 | if (wpa_s->num_prov_found == 0 && |
2528 | wpa_s->num_osu_scans < 3) { | |
2529 | wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again"); | |
2530 | hs20_start_osu_scan(wpa_s); | |
2531 | return; | |
2532 | } | |
b572df86 JM |
2533 | wpa_printf(MSG_DEBUG, "Interworking: Next icon"); |
2534 | hs20_osu_icon_fetch(wpa_s); | |
2535 | return; | |
2536 | } | |
afc064fe JM |
2537 | wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed"); |
2538 | wpa_s->fetch_anqp_in_progress = 0; | |
b02fe7ff JM |
2539 | if (wpa_s->network_select) |
2540 | interworking_select_network(wpa_s); | |
afc064fe JM |
2541 | } |
2542 | } | |
2543 | ||
2544 | ||
4d5bda5f | 2545 | void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s) |
afc064fe JM |
2546 | { |
2547 | struct wpa_bss *bss; | |
2548 | ||
afc064fe JM |
2549 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) |
2550 | bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED; | |
2551 | ||
2552 | wpa_s->fetch_anqp_in_progress = 1; | |
2553 | interworking_next_anqp_fetch(wpa_s); | |
b02fe7ff JM |
2554 | } |
2555 | ||
2556 | ||
2557 | int interworking_fetch_anqp(struct wpa_supplicant *wpa_s) | |
2558 | { | |
2559 | if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) | |
2560 | return 0; | |
2561 | ||
2562 | wpa_s->network_select = 0; | |
7ff83367 | 2563 | wpa_s->fetch_all_anqp = 1; |
b572df86 | 2564 | wpa_s->fetch_osu_info = 0; |
b02fe7ff JM |
2565 | |
2566 | interworking_start_fetch_anqp(wpa_s); | |
afc064fe JM |
2567 | |
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | ||
2572 | void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s) | |
2573 | { | |
2574 | if (!wpa_s->fetch_anqp_in_progress) | |
2575 | return; | |
2576 | ||
2577 | wpa_s->fetch_anqp_in_progress = 0; | |
2578 | } | |
2579 | ||
2580 | ||
2581 | int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, | |
cf28c66b | 2582 | u16 info_ids[], size_t num_ids, u32 subtypes) |
afc064fe JM |
2583 | { |
2584 | struct wpabuf *buf; | |
cf28c66b | 2585 | struct wpabuf *hs20_buf = NULL; |
afc064fe JM |
2586 | int ret = 0; |
2587 | int freq; | |
2588 | struct wpa_bss *bss; | |
2589 | int res; | |
2590 | ||
2591 | freq = wpa_s->assoc_freq; | |
2592 | bss = wpa_bss_get_bssid(wpa_s, dst); | |
485e3a92 JM |
2593 | if (bss) { |
2594 | wpa_bss_anqp_unshare_alloc(bss); | |
afc064fe | 2595 | freq = bss->freq; |
485e3a92 | 2596 | } |
afc064fe JM |
2597 | if (freq <= 0) |
2598 | return -1; | |
2599 | ||
2600 | wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)", | |
2601 | MAC2STR(dst), (unsigned int) num_ids); | |
2602 | ||
cf28c66b DS |
2603 | #ifdef CONFIG_HS20 |
2604 | if (subtypes != 0) { | |
2605 | hs20_buf = wpabuf_alloc(100); | |
2606 | if (hs20_buf == NULL) | |
2607 | return -1; | |
2608 | hs20_put_anqp_req(subtypes, NULL, 0, hs20_buf); | |
2609 | } | |
2610 | #endif /* CONFIG_HS20 */ | |
2611 | ||
2612 | buf = anqp_build_req(info_ids, num_ids, hs20_buf); | |
2613 | wpabuf_free(hs20_buf); | |
afc064fe JM |
2614 | if (buf == NULL) |
2615 | return -1; | |
2616 | ||
2617 | res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); | |
2618 | if (res < 0) { | |
2619 | wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); | |
24c694b4 | 2620 | wpabuf_free(buf); |
afc064fe JM |
2621 | ret = -1; |
2622 | } else | |
2623 | wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " | |
2624 | "%u", res); | |
2625 | ||
afc064fe JM |
2626 | return ret; |
2627 | } | |
2628 | ||
2629 | ||
2630 | static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s, | |
17b8995c JM |
2631 | struct wpa_bss *bss, const u8 *sa, |
2632 | u16 info_id, | |
afc064fe JM |
2633 | const u8 *data, size_t slen) |
2634 | { | |
2635 | const u8 *pos = data; | |
476aed35 | 2636 | struct wpa_bss_anqp *anqp = NULL; |
2249d714 JM |
2637 | #ifdef CONFIG_HS20 |
2638 | u8 type; | |
2639 | #endif /* CONFIG_HS20 */ | |
afc064fe | 2640 | |
476aed35 JM |
2641 | if (bss) |
2642 | anqp = bss->anqp; | |
2643 | ||
afc064fe JM |
2644 | switch (info_id) { |
2645 | case ANQP_CAPABILITY_LIST: | |
2646 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2647 | " ANQP Capability list", MAC2STR(sa)); | |
2648 | break; | |
2649 | case ANQP_VENUE_NAME: | |
2650 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2651 | " Venue Name", MAC2STR(sa)); | |
2652 | wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen); | |
476aed35 JM |
2653 | if (anqp) { |
2654 | wpabuf_free(anqp->venue_name); | |
2655 | anqp->venue_name = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2656 | } |
2657 | break; | |
2658 | case ANQP_NETWORK_AUTH_TYPE: | |
2659 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2660 | " Network Authentication Type information", | |
2661 | MAC2STR(sa)); | |
2662 | wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication " | |
2663 | "Type", pos, slen); | |
476aed35 JM |
2664 | if (anqp) { |
2665 | wpabuf_free(anqp->network_auth_type); | |
2666 | anqp->network_auth_type = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2667 | } |
2668 | break; | |
2669 | case ANQP_ROAMING_CONSORTIUM: | |
2670 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2671 | " Roaming Consortium list", MAC2STR(sa)); | |
2672 | wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium", | |
2673 | pos, slen); | |
476aed35 JM |
2674 | if (anqp) { |
2675 | wpabuf_free(anqp->roaming_consortium); | |
2676 | anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2677 | } |
2678 | break; | |
2679 | case ANQP_IP_ADDR_TYPE_AVAILABILITY: | |
2680 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2681 | " IP Address Type Availability information", | |
2682 | MAC2STR(sa)); | |
2683 | wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability", | |
2684 | pos, slen); | |
476aed35 JM |
2685 | if (anqp) { |
2686 | wpabuf_free(anqp->ip_addr_type_availability); | |
2687 | anqp->ip_addr_type_availability = | |
afc064fe JM |
2688 | wpabuf_alloc_copy(pos, slen); |
2689 | } | |
2690 | break; | |
2691 | case ANQP_NAI_REALM: | |
2692 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2693 | " NAI Realm list", MAC2STR(sa)); | |
2694 | wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen); | |
476aed35 JM |
2695 | if (anqp) { |
2696 | wpabuf_free(anqp->nai_realm); | |
2697 | anqp->nai_realm = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2698 | } |
2699 | break; | |
2700 | case ANQP_3GPP_CELLULAR_NETWORK: | |
2701 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2702 | " 3GPP Cellular Network information", MAC2STR(sa)); | |
2703 | wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network", | |
2704 | pos, slen); | |
476aed35 JM |
2705 | if (anqp) { |
2706 | wpabuf_free(anqp->anqp_3gpp); | |
2707 | anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2708 | } |
2709 | break; | |
2710 | case ANQP_DOMAIN_NAME: | |
2711 | wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR | |
2712 | " Domain Name list", MAC2STR(sa)); | |
2713 | wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen); | |
476aed35 JM |
2714 | if (anqp) { |
2715 | wpabuf_free(anqp->domain_name); | |
2716 | anqp->domain_name = wpabuf_alloc_copy(pos, slen); | |
afc064fe JM |
2717 | } |
2718 | break; | |
2719 | case ANQP_VENDOR_SPECIFIC: | |
2720 | if (slen < 3) | |
2721 | return; | |
2722 | ||
2723 | switch (WPA_GET_BE24(pos)) { | |
2249d714 JM |
2724 | #ifdef CONFIG_HS20 |
2725 | case OUI_WFA: | |
2726 | pos += 3; | |
2727 | slen -= 3; | |
2728 | ||
2729 | if (slen < 1) | |
2730 | return; | |
2731 | type = *pos++; | |
2732 | slen--; | |
2733 | ||
2734 | switch (type) { | |
2735 | case HS20_ANQP_OUI_TYPE: | |
2736 | hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos, | |
2737 | slen); | |
2738 | break; | |
2739 | default: | |
2740 | wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP " | |
2741 | "vendor type %u", type); | |
2742 | break; | |
2743 | } | |
2744 | break; | |
2745 | #endif /* CONFIG_HS20 */ | |
afc064fe JM |
2746 | default: |
2747 | wpa_printf(MSG_DEBUG, "Interworking: Unsupported " | |
2748 | "vendor-specific ANQP OUI %06x", | |
2749 | WPA_GET_BE24(pos)); | |
2750 | return; | |
2751 | } | |
2752 | break; | |
2753 | default: | |
2754 | wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID " | |
2755 | "%u", info_id); | |
2756 | break; | |
2757 | } | |
2758 | } | |
2759 | ||
2760 | ||
2761 | void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token, | |
2762 | enum gas_query_result result, | |
2763 | const struct wpabuf *adv_proto, | |
2764 | const struct wpabuf *resp, u16 status_code) | |
2765 | { | |
2766 | struct wpa_supplicant *wpa_s = ctx; | |
2767 | const u8 *pos; | |
2768 | const u8 *end; | |
2769 | u16 info_id; | |
2770 | u16 slen; | |
17b8995c | 2771 | struct wpa_bss *bss = NULL, *tmp; |
afc064fe | 2772 | |
b572df86 JM |
2773 | wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR |
2774 | " dialog_token=%u result=%d status_code=%u", | |
2775 | MAC2STR(dst), dialog_token, result, status_code); | |
2776 | if (result != GAS_QUERY_SUCCESS) { | |
2777 | if (wpa_s->fetch_osu_icon_in_progress) | |
2778 | hs20_icon_fetch_failed(wpa_s); | |
afc064fe | 2779 | return; |
b572df86 | 2780 | } |
afc064fe JM |
2781 | |
2782 | pos = wpabuf_head(adv_proto); | |
2783 | if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO || | |
2784 | pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) { | |
2785 | wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement " | |
2786 | "Protocol in response"); | |
b572df86 JM |
2787 | if (wpa_s->fetch_osu_icon_in_progress) |
2788 | hs20_icon_fetch_failed(wpa_s); | |
afc064fe JM |
2789 | return; |
2790 | } | |
2791 | ||
17b8995c JM |
2792 | /* |
2793 | * If possible, select the BSS entry based on which BSS entry was used | |
2794 | * for the request. This can help in cases where multiple BSS entries | |
2795 | * may exist for the same AP. | |
2796 | */ | |
2797 | dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) { | |
2798 | if (tmp == wpa_s->interworking_gas_bss && | |
2799 | os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) { | |
2800 | bss = tmp; | |
2801 | break; | |
2802 | } | |
2803 | } | |
2804 | if (bss == NULL) | |
2805 | bss = wpa_bss_get_bssid(wpa_s, dst); | |
2806 | ||
afc064fe JM |
2807 | pos = wpabuf_head(resp); |
2808 | end = pos + wpabuf_len(resp); | |
2809 | ||
2810 | while (pos < end) { | |
43aee948 JM |
2811 | unsigned int left = end - pos; |
2812 | ||
2813 | if (left < 4) { | |
afc064fe JM |
2814 | wpa_printf(MSG_DEBUG, "ANQP: Invalid element"); |
2815 | break; | |
2816 | } | |
2817 | info_id = WPA_GET_LE16(pos); | |
2818 | pos += 2; | |
2819 | slen = WPA_GET_LE16(pos); | |
2820 | pos += 2; | |
43aee948 JM |
2821 | left -= 4; |
2822 | if (left < slen) { | |
afc064fe JM |
2823 | wpa_printf(MSG_DEBUG, "ANQP: Invalid element length " |
2824 | "for Info ID %u", info_id); | |
2825 | break; | |
2826 | } | |
17b8995c | 2827 | interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos, |
afc064fe JM |
2828 | slen); |
2829 | pos += slen; | |
2830 | } | |
b572df86 JM |
2831 | |
2832 | hs20_notify_parse_done(wpa_s); | |
afc064fe | 2833 | } |
b02fe7ff JM |
2834 | |
2835 | ||
2836 | static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s, | |
2837 | struct wpa_scan_results *scan_res) | |
2838 | { | |
2839 | wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start " | |
2840 | "ANQP fetch"); | |
2841 | interworking_start_fetch_anqp(wpa_s); | |
2842 | } | |
2843 | ||
2844 | ||
356d1488 JM |
2845 | int interworking_select(struct wpa_supplicant *wpa_s, int auto_select, |
2846 | int *freqs) | |
b02fe7ff JM |
2847 | { |
2848 | interworking_stop_fetch_anqp(wpa_s); | |
2849 | wpa_s->network_select = 1; | |
4d5bda5f | 2850 | wpa_s->auto_network_select = 0; |
b02fe7ff | 2851 | wpa_s->auto_select = !!auto_select; |
7ff83367 | 2852 | wpa_s->fetch_all_anqp = 0; |
b572df86 | 2853 | wpa_s->fetch_osu_info = 0; |
b02fe7ff JM |
2854 | wpa_printf(MSG_DEBUG, "Interworking: Start scan for network " |
2855 | "selection"); | |
2856 | wpa_s->scan_res_handler = interworking_scan_res_handler; | |
1bd05d04 | 2857 | wpa_s->normal_scans = 0; |
4115303b | 2858 | wpa_s->scan_req = MANUAL_SCAN_REQ; |
356d1488 JM |
2859 | os_free(wpa_s->manual_scan_freqs); |
2860 | wpa_s->manual_scan_freqs = freqs; | |
1bd05d04 | 2861 | wpa_s->after_wps = 0; |
d20c340f | 2862 | wpa_s->known_wps_freq = 0; |
b02fe7ff JM |
2863 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
2864 | ||
2865 | return 0; | |
2866 | } | |
b1f12296 JM |
2867 | |
2868 | ||
2869 | static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token, | |
2870 | enum gas_query_result result, | |
2871 | const struct wpabuf *adv_proto, | |
2872 | const struct wpabuf *resp, u16 status_code) | |
2873 | { | |
2874 | struct wpa_supplicant *wpa_s = ctx; | |
b6a9590b | 2875 | struct wpabuf *n; |
b1f12296 JM |
2876 | |
2877 | wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR | |
2878 | " dialog_token=%d status_code=%d resp_len=%d", | |
2879 | MAC2STR(addr), dialog_token, status_code, | |
2880 | resp ? (int) wpabuf_len(resp) : -1); | |
2881 | if (!resp) | |
2882 | return; | |
2883 | ||
b6a9590b JM |
2884 | n = wpabuf_dup(resp); |
2885 | if (n == NULL) | |
b1f12296 | 2886 | return; |
b6a9590b JM |
2887 | wpabuf_free(wpa_s->prev_gas_resp); |
2888 | wpa_s->prev_gas_resp = wpa_s->last_gas_resp; | |
2889 | os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN); | |
2890 | wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token; | |
2891 | wpa_s->last_gas_resp = n; | |
b1f12296 JM |
2892 | os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN); |
2893 | wpa_s->last_gas_dialog_token = dialog_token; | |
2894 | } | |
2895 | ||
2896 | ||
2897 | int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst, | |
2898 | const struct wpabuf *adv_proto, | |
2899 | const struct wpabuf *query) | |
2900 | { | |
2901 | struct wpabuf *buf; | |
2902 | int ret = 0; | |
2903 | int freq; | |
2904 | struct wpa_bss *bss; | |
2905 | int res; | |
2906 | size_t len; | |
8b65fefe | 2907 | u8 query_resp_len_limit = 0; |
b1f12296 JM |
2908 | |
2909 | freq = wpa_s->assoc_freq; | |
2910 | bss = wpa_bss_get_bssid(wpa_s, dst); | |
2911 | if (bss) | |
2912 | freq = bss->freq; | |
2913 | if (freq <= 0) | |
2914 | return -1; | |
2915 | ||
2916 | wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)", | |
2917 | MAC2STR(dst), freq); | |
2918 | wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto); | |
2919 | wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query); | |
2920 | ||
2921 | len = 3 + wpabuf_len(adv_proto) + 2; | |
2922 | if (query) | |
2923 | len += wpabuf_len(query); | |
2924 | buf = gas_build_initial_req(0, len); | |
2925 | if (buf == NULL) | |
2926 | return -1; | |
2927 | ||
2928 | /* Advertisement Protocol IE */ | |
2929 | wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO); | |
2930 | wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */ | |
8b65fefe | 2931 | wpabuf_put_u8(buf, query_resp_len_limit & 0x7f); |
b1f12296 JM |
2932 | wpabuf_put_buf(buf, adv_proto); |
2933 | ||
2934 | /* GAS Query */ | |
2935 | if (query) { | |
2936 | wpabuf_put_le16(buf, wpabuf_len(query)); | |
2937 | wpabuf_put_buf(buf, query); | |
2938 | } else | |
2939 | wpabuf_put_le16(buf, 0); | |
2940 | ||
2941 | res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s); | |
2942 | if (res < 0) { | |
2943 | wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request"); | |
24c694b4 | 2944 | wpabuf_free(buf); |
b1f12296 JM |
2945 | ret = -1; |
2946 | } else | |
2947 | wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token " | |
2948 | "%u", res); | |
2949 | ||
b1f12296 JM |
2950 | return ret; |
2951 | } |