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HS20: Fix TrustRoot path for PolicyUpdate node in PPS MO
[thirdparty/hostap.git] / wpa_supplicant / hs20_supplicant.c
CommitLineData
25471fe3
JK		 1/*
2 * Copyright (c) 2009, Atheros Communications, Inc.
1d2215fc 3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
25471fe3
JK		 4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "includes.h"
10
11#include "common.h"
12#include "eloop.h"
13#include "common/ieee802_11_common.h"
14#include "common/ieee802_11_defs.h"
15#include "common/gas.h"
16#include "common/wpa_ctrl.h"
7ef69479 17#include "rsn_supp/wpa.h"
25471fe3
JK		 18#include "wpa_supplicant_i.h"
19#include "driver_i.h"
20#include "config.h"
b572df86 21#include "scan.h"
25471fe3 22#include "bss.h"
7ef69479 23#include "blacklist.h"
25471fe3
JK		 24#include "gas_query.h"
25#include "interworking.h"
26#include "hs20_supplicant.h"
27
28
b572df86
JM		 29#define OSU_MAX_ITEMS 10
30
31struct osu_lang_string {
32 char lang[4];
33 char text[253];
34};
35
36struct osu_icon {
37 u16 width;
38 u16 height;
39 char lang[4];
40 char icon_type[256];
41 char filename[256];
42 unsigned int id;
43 unsigned int failed:1;
44};
45
46struct osu_provider {
47 u8 bssid[ETH_ALEN];
48 u8 osu_ssid[32];
49 u8 osu_ssid_len;
50 char server_uri[256];
51 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
52 char osu_nai[256];
53 struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
54 size_t friendly_name_count;
55 struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
56 size_t serv_desc_count;
57 struct osu_icon icon[OSU_MAX_ITEMS];
58 size_t icon_count;
59};
60
61
f9cd147d 62void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
c923b8a5 63{
f9cd147d
JM		 64 u8 conf;
65
c923b8a5 66 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
f9cd147d 67 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
c923b8a5
JK		 68 wpabuf_put_be24(buf, OUI_WFA);
69 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
f9cd147d
JM		 70 conf = HS20_VERSION;
71 if (pps_mo_id >= 0)
72 conf |= HS20_PPS_MO_ID_PRESENT;
73 wpabuf_put_u8(buf, conf);
74 if (pps_mo_id >= 0)
75 wpabuf_put_le16(buf, pps_mo_id);
c923b8a5
JK		 76}
77
78
55a2df43
JM		 79int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
80 struct wpa_bss *bss)
81{
82 if (!wpa_s->conf->hs20 || !ssid)
83 return 0;
84
85 if (ssid->parent_cred)
86 return 1;
87
88 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE))
89 return 0;
90
91 /*
92 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that
93 * than cause Hotspot 2.0 connections without indication element getting
94 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element.
95 */
96
97 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X))
98 return 0;
99 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP))
100 return 0;
101 if (ssid->proto != WPA_PROTO_RSN)
102 return 0;
103
104 return 1;
105}
106
107
f9cd147d
JM		 108int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
109{
110 struct wpa_cred *cred;
111
e376290c
DS		 112 if (ssid == NULL)
113 return 0;
114
115 if (ssid->update_identifier)
116 return ssid->update_identifier;
117
118 if (ssid->parent_cred == NULL)
f9cd147d
JM		 119 return 0;
120
121 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
122 if (ssid->parent_cred == cred)
123 return cred->update_identifier;
124 }
125
126 return 0;
127}
128
129
cf28c66b
DS		 130void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
131 struct wpabuf *buf)
25471fe3 132{
25471fe3
JK		 133 u8 *len_pos;
134
25471fe3 135 if (buf == NULL)
cf28c66b 136 return;
25471fe3
JK		 137
138 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
139 wpabuf_put_be24(buf, OUI_WFA);
140 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
141 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
142 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
143 wpabuf_put_u8(buf, 0); /* Reserved */
144 if (payload)
145 wpabuf_put_data(buf, payload, payload_len);
184e110c
JM		 146 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
147 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
148 wpabuf_put_u8(buf, 0); /* Reserved */
149 if (payload)
150 wpabuf_put_data(buf, payload, payload_len);
25471fe3
JK		 151 } else {
152 u8 i;
153 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
154 wpabuf_put_u8(buf, 0); /* Reserved */
155 for (i = 0; i < 32; i++) {
156 if (stypes & BIT(i))
157 wpabuf_put_u8(buf, i);
158 }
159 }
160 gas_anqp_set_element_len(buf, len_pos);
161
162 gas_anqp_set_len(buf);
cf28c66b
DS		 163}
164
165
166struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
167 size_t payload_len)
168{
169 struct wpabuf *buf;
170
171 buf = gas_anqp_build_initial_req(0, 100 + payload_len);
172 if (buf == NULL)
173 return NULL;
174
175 hs20_put_anqp_req(stypes, payload, payload_len, buf);
25471fe3
JK		 176
177 return buf;
178}
179
180
181int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
182 const u8 *payload, size_t payload_len)
183{
184 struct wpabuf *buf;
185 int ret = 0;
186 int freq;
187 struct wpa_bss *bss;
188 int res;
189
190 freq = wpa_s->assoc_freq;
191 bss = wpa_bss_get_bssid(wpa_s, dst);
485e3a92
JM		 192 if (bss) {
193 wpa_bss_anqp_unshare_alloc(bss);
25471fe3 194 freq = bss->freq;
485e3a92 195 }
25471fe3
JK		 196 if (freq <= 0)
197 return -1;
198
199 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
200 "subtypes 0x%x", MAC2STR(dst), stypes);
201
202 buf = hs20_build_anqp_req(stypes, payload, payload_len);
203 if (buf == NULL)
204 return -1;
205
206 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
207 if (res < 0) {
208 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
24c694b4 209 wpabuf_free(buf);
25471fe3
JK		 210 ret = -1;
211 } else
212 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
213 "%u", res);
214
25471fe3
JK		 215 return ret;
216}
217
218
b572df86
JM		 219static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
220 const u8 *sa, const u8 *pos,
221 size_t slen)
222{
223 char fname[256];
224 int png;
225 FILE *f;
226 u16 data_len;
227
228 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File",
229 MAC2STR(sa));
230
231 if (slen < 4) {
232 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
233 "value from " MACSTR, MAC2STR(sa));
234 return -1;
235 }
236
237 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
238 if (*pos != 0)
239 return -1;
240 pos++;
241 slen--;
242
243 if ((size_t) 1 + pos[0] > slen) {
244 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
245 "value from " MACSTR, MAC2STR(sa));
246 return -1;
247 }
248 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
249 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
250 slen -= 1 + pos[0];
251 pos += 1 + pos[0];
252
253 if (slen < 2) {
254 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
255 "value from " MACSTR, MAC2STR(sa));
256 return -1;
257 }
258 data_len = WPA_GET_LE16(pos);
259 pos += 2;
260 slen -= 2;
261
262 if (data_len > slen) {
263 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
264 "value from " MACSTR, MAC2STR(sa));
265 return -1;
266 }
267
268 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
269 if (wpa_s->conf->osu_dir == NULL)
270 return -1;
271
272 wpa_s->osu_icon_id++;
273 if (wpa_s->osu_icon_id == 0)
274 wpa_s->osu_icon_id++;
275 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
276 wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
277 png ? "png" : "icon");
278 f = fopen(fname, "wb");
279 if (f == NULL)
280 return -1;
281 if (fwrite(pos, slen, 1, f) != 1) {
282 fclose(f);
283 unlink(fname);
284 return -1;
285 }
286 fclose(f);
287
288 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname);
289 return 0;
290}
291
292
293static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
294{
295 struct wpa_supplicant *wpa_s = eloop_ctx;
296 if (wpa_s->fetch_osu_icon_in_progress)
297 hs20_next_osu_icon(wpa_s);
298}
299
300
301static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
302{
303 size_t i, j;
230e3735
JM		 304 struct os_reltime now, tmp;
305 int dur;
306
307 os_get_reltime(&now);
308 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
309 dur = tmp.sec * 1000 + tmp.usec / 1000;
310 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
311 dur, res);
312
b572df86
JM		 313 for (i = 0; i < wpa_s->osu_prov_count; i++) {
314 struct osu_provider *osu = &wpa_s->osu_prov[i];
315 for (j = 0; j < osu->icon_count; j++) {
316 struct osu_icon *icon = &osu->icon[j];
317 if (icon->id || icon->failed)
318 continue;
319 if (res < 0)
320 icon->failed = 1;
321 else
322 icon->id = wpa_s->osu_icon_id;
323 return;
324 }
325 }
326}
327
328
25471fe3 329void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
8266e6c6
JM		 330 struct wpa_bss *bss, const u8 *sa,
331 const u8 *data, size_t slen)
25471fe3
JK		 332{
333 const u8 *pos = data;
334 u8 subtype;
476aed35 335 struct wpa_bss_anqp *anqp = NULL;
b572df86 336 int ret;
25471fe3
JK		 337
338 if (slen < 2)
339 return;
340
476aed35
JM		 341 if (bss)
342 anqp = bss->anqp;
343
25471fe3
JK		 344 subtype = *pos++;
345 slen--;
346
347 pos++; /* Reserved */
348 slen--;
349
350 switch (subtype) {
351 case HS20_STYPE_CAPABILITY_LIST:
352 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
353 " HS Capability List", MAC2STR(sa));
354 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
355 break;
356 case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
357 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
358 " Operator Friendly Name", MAC2STR(sa));
359 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
476aed35
JM		 360 if (anqp) {
361 wpabuf_free(anqp->hs20_operator_friendly_name);
362 anqp->hs20_operator_friendly_name =
25471fe3
JK		 363 wpabuf_alloc_copy(pos, slen);
364 }
365 break;
366 case HS20_STYPE_WAN_METRICS:
2edcd504
JM		 367 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen);
368 if (slen < 13) {
369 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN "
370 "Metrics value from " MACSTR, MAC2STR(sa));
371 break;
372 }
25471fe3 373 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
2edcd504
JM		 374 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa),
375 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5),
376 pos[9], pos[10], WPA_GET_LE16(pos + 11));
476aed35
JM		 377 if (anqp) {
378 wpabuf_free(anqp->hs20_wan_metrics);
379 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
25471fe3
JK		 380 }
381 break;
382 case HS20_STYPE_CONNECTION_CAPABILITY:
383 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
384 " Connection Capability", MAC2STR(sa));
385 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
476aed35
JM		 386 if (anqp) {
387 wpabuf_free(anqp->hs20_connection_capability);
388 anqp->hs20_connection_capability =
25471fe3
JK		 389 wpabuf_alloc_copy(pos, slen);
390 }
391 break;
392 case HS20_STYPE_OPERATING_CLASS:
393 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
394 " Operating Class", MAC2STR(sa));
395 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
476aed35
JM		 396 if (anqp) {
397 wpabuf_free(anqp->hs20_operating_class);
398 anqp->hs20_operating_class =
25471fe3
JK		 399 wpabuf_alloc_copy(pos, slen);
400 }
401 break;
1d2215fc
JM		 402 case HS20_STYPE_OSU_PROVIDERS_LIST:
403 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
404 " OSU Providers list", MAC2STR(sa));
a6739e19 405 wpa_s->num_prov_found++;
1d2215fc
JM		 406 if (anqp) {
407 wpabuf_free(anqp->hs20_osu_providers_list);
408 anqp->hs20_osu_providers_list =
409 wpabuf_alloc_copy(pos, slen);
410 }
411 break;
184e110c 412 case HS20_STYPE_ICON_BINARY_FILE:
b572df86
JM		 413 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen);
414 if (wpa_s->fetch_osu_icon_in_progress) {
415 hs20_osu_icon_fetch_result(wpa_s, ret);
416 eloop_cancel_timeout(hs20_continue_icon_fetch,
417 wpa_s, NULL);
418 eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
419 wpa_s, NULL);
420 }
421 break;
422 default:
423 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
424 break;
425 }
426}
427
428
429void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
430{
431 if (!wpa_s->fetch_osu_icon_in_progress)
432 return;
433 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
434 return;
435 /*
436 * We are going through icon fetch, but no icon response was received.
437 * Assume this means the current AP could not provide an answer to avoid
438 * getting stuck in fetch iteration.
439 */
440 hs20_icon_fetch_failed(wpa_s);
441}
442
443
444static void hs20_free_osu_prov_entry(struct osu_provider *prov)
445{
446}
447
448
449void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
450{
451 size_t i;
452 for (i = 0; i < wpa_s->osu_prov_count; i++)
453 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
454 os_free(wpa_s->osu_prov);
455 wpa_s->osu_prov = NULL;
456 wpa_s->osu_prov_count = 0;
457}
458
459
460static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
461{
462 char fname[256];
463 FILE *f;
464 size_t i, j;
465
466 wpa_s->fetch_osu_info = 0;
467 wpa_s->fetch_osu_icon_in_progress = 0;
184e110c 468
b572df86
JM		 469 if (wpa_s->conf->osu_dir == NULL) {
470 hs20_free_osu_prov(wpa_s);
471 wpa_s->fetch_anqp_in_progress = 0;
472 return;
473 }
474
475 snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
476 wpa_s->conf->osu_dir);
477 f = fopen(fname, "w");
478 if (f == NULL) {
479 hs20_free_osu_prov(wpa_s);
480 return;
481 }
482 for (i = 0; i < wpa_s->osu_prov_count; i++) {
483 struct osu_provider *osu = &wpa_s->osu_prov[i];
484 if (i > 0)
485 fprintf(f, "\n");
486 fprintf(f, "OSU-PROVIDER " MACSTR "\n"
487 "uri=%s\n"
488 "methods=%08x\n",
489 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
490 if (osu->osu_ssid_len) {
491 fprintf(f, "osu_ssid=%s\n",
492 wpa_ssid_txt(osu->osu_ssid,
493 osu->osu_ssid_len));
494 }
495 if (osu->osu_nai[0])
496 fprintf(f, "osu_nai=%s\n", osu->osu_nai);
497 for (j = 0; j < osu->friendly_name_count; j++) {
498 fprintf(f, "friendly_name=%s:%s\n",
499 osu->friendly_name[j].lang,
500 osu->friendly_name[j].text);
501 }
502 for (j = 0; j < osu->serv_desc_count; j++) {
503 fprintf(f, "desc=%s:%s\n",
504 osu->serv_desc[j].lang,
505 osu->serv_desc[j].text);
506 }
507 for (j = 0; j < osu->icon_count; j++) {
508 struct osu_icon *icon = &osu->icon[j];
509 if (icon->failed)
510 continue; /* could not fetch icon */
511 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
512 icon->id, icon->width, icon->height, icon->lang,
513 icon->icon_type, icon->filename);
514 }
515 }
516 fclose(f);
517 hs20_free_osu_prov(wpa_s);
518
519 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
520 wpa_s->fetch_anqp_in_progress = 0;
521}
522
523
524void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
525{
526 size_t i, j;
527
528 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
529
530 for (i = 0; i < wpa_s->osu_prov_count; i++) {
531 struct osu_provider *osu = &wpa_s->osu_prov[i];
532 for (j = 0; j < osu->icon_count; j++) {
533 struct osu_icon *icon = &osu->icon[j];
534 if (icon->id || icon->failed)
535 continue;
536
537 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
538 "from " MACSTR, icon->filename,
539 MAC2STR(osu->bssid));
230e3735 540 os_get_reltime(&wpa_s->osu_icon_fetch_start);
b572df86
JM		 541 if (hs20_anqp_send_req(wpa_s, osu->bssid,
542 BIT(HS20_STYPE_ICON_REQUEST),
543 (u8 *) icon->filename,
544 os_strlen(icon->filename)) < 0) {
545 icon->failed = 1;
546 continue;
547 }
548 return;
549 }
550 }
551
552 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
553 hs20_osu_fetch_done(wpa_s);
554}
555
556
557static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
558 const u8 *osu_ssid, u8 osu_ssid_len,
559 const u8 *pos, size_t len)
560{
561 struct osu_provider *prov;
562 const u8 *end = pos + len;
563 u16 len2;
564 const u8 *pos2;
0570a3ea 565 u8 uri_len, osu_method_len, osu_nai_len;
b572df86
JM		 566
567 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
568 prov = os_realloc_array(wpa_s->osu_prov,
569 wpa_s->osu_prov_count + 1,
570 sizeof(*prov));
571 if (prov == NULL)
572 return;
573 wpa_s->osu_prov = prov;
574 prov = &prov[wpa_s->osu_prov_count];
575 os_memset(prov, 0, sizeof(*prov));
576
577 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
578 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
579 prov->osu_ssid_len = osu_ssid_len;
580
581 /* OSU Friendly Name Length */
582 if (pos + 2 > end) {
583 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
584 "Friendly Name Length");
585 return;
586 }
587 len2 = WPA_GET_LE16(pos);
588 pos += 2;
0570a3ea 589 if (len2 > end - pos) {
b572df86
JM		 590 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
591 "Friendly Name Duples");
592 return;
593 }
594 pos2 = pos;
595 pos += len2;
596
597 /* OSU Friendly Name Duples */
598 while (pos2 + 4 <= pos && prov->friendly_name_count < OSU_MAX_ITEMS) {
599 struct osu_lang_string *f;
600 if (pos2 + 1 + pos2[0] > pos || pos2[0] < 3) {
601 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
602 break;
603 }
604 f = &prov->friendly_name[prov->friendly_name_count++];
605 os_memcpy(f->lang, pos2 + 1, 3);
606 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
607 pos2 += 1 + pos2[0];
608 }
609
610 /* OSU Server URI */
355e17eb
JM		 611 if (pos + 1 > end) {
612 wpa_printf(MSG_DEBUG,
613 "HS 2.0: Not enough room for OSU Server URI length");
614 return;
615 }
616 uri_len = *pos++;
617 if (uri_len > end - pos) {
b572df86
JM		 618 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
619 "URI");
620 return;
621 }
355e17eb
JM		 622 os_memcpy(prov->server_uri, pos, uri_len);
623 pos += uri_len;
b572df86
JM		 624
625 /* OSU Method list */
0570a3ea
JM		 626 if (pos + 1 > end) {
627 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
628 "list length");
629 return;
630 }
631 osu_method_len = pos[0];
632 if (osu_method_len > end - pos - 1) {
b572df86
JM		 633 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
634 "list");
635 return;
636 }
637 pos2 = pos + 1;
0570a3ea 638 pos += 1 + osu_method_len;
b572df86
JM		 639 while (pos2 < pos) {
640 if (*pos2 < 32)
641 prov->osu_methods |= BIT(*pos2);
642 pos2++;
643 }
644
645 /* Icons Available Length */
646 if (pos + 2 > end) {
647 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
648 "Available Length");
649 return;
650 }
651 len2 = WPA_GET_LE16(pos);
652 pos += 2;
0570a3ea 653 if (len2 > end - pos) {
b572df86
JM		 654 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
655 "Available");
656 return;
657 }
658 pos2 = pos;
659 pos += len2;
660
661 /* Icons Available */
662 while (pos2 < pos) {
663 struct osu_icon *icon = &prov->icon[prov->icon_count];
0570a3ea
JM		 664 u8 flen;
665
b572df86
JM		 666 if (pos2 + 2 + 2 + 3 + 1 + 1 > pos) {
667 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
184e110c
JM		 668 break;
669 }
670
b572df86
JM		 671 icon->width = WPA_GET_LE16(pos2);
672 pos2 += 2;
673 icon->height = WPA_GET_LE16(pos2);
674 pos2 += 2;
675 os_memcpy(icon->lang, pos2, 3);
676 pos2 += 3;
184e110c 677
0570a3ea
JM		 678 flen = pos2[0];
679 if (flen > pos - pos2 - 1) {
b572df86 680 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
184e110c
JM		 681 break;
682 }
0570a3ea
JM		 683 os_memcpy(icon->icon_type, pos2 + 1, flen);
684 pos2 += 1 + flen;
184e110c 685
0570a3ea
JM		 686 if (pos2 + 1 > pos) {
687 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
688 "Filename length");
689 break;
690 }
691 flen = pos2[0];
692 if (flen > pos - pos2 - 1) {
b572df86
JM		 693 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
694 "Filename");
184e110c
JM		 695 break;
696 }
0570a3ea
JM		 697 os_memcpy(icon->filename, pos2 + 1, flen);
698 pos2 += 1 + flen;
184e110c 699
b572df86
JM		 700 prov->icon_count++;
701 }
702
703 /* OSU_NAI */
0570a3ea 704 if (pos + 1 > end) {
b572df86
JM		 705 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
706 return;
707 }
0570a3ea
JM		 708 osu_nai_len = pos[0];
709 if (osu_nai_len > end - pos - 1) {
710 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
711 return;
712 }
713 os_memcpy(prov->osu_nai, pos + 1, osu_nai_len);
714 pos += 1 + osu_nai_len;
b572df86
JM		 715
716 /* OSU Service Description Length */
717 if (pos + 2 > end) {
718 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
719 "Service Description Length");
720 return;
721 }
722 len2 = WPA_GET_LE16(pos);
723 pos += 2;
0570a3ea 724 if (len2 > end - pos) {
b572df86
JM		 725 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
726 "Service Description Duples");
727 return;
728 }
729 pos2 = pos;
730 pos += len2;
731
732 /* OSU Service Description Duples */
733 while (pos2 + 4 <= pos && prov->serv_desc_count < OSU_MAX_ITEMS) {
734 struct osu_lang_string *f;
0570a3ea
JM		 735 u8 descr_len;
736
737 descr_len = pos2[0];
738 if (descr_len > pos - pos2 - 1 || descr_len < 3) {
b572df86
JM		 739 wpa_printf(MSG_DEBUG, "Invalid OSU Service "
740 "Description");
184e110c
JM		 741 break;
742 }
b572df86
JM		 743 f = &prov->serv_desc[prov->serv_desc_count++];
744 os_memcpy(f->lang, pos2 + 1, 3);
0570a3ea
JM		 745 os_memcpy(f->text, pos2 + 1 + 3, descr_len - 3);
746 pos2 += 1 + descr_len;
b572df86 747 }
184e110c 748
b572df86
JM		 749 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
750 MAC2STR(bss->bssid));
751 wpa_s->osu_prov_count++;
752}
753
754
755void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
756{
757 struct wpa_bss *bss;
758 struct wpabuf *prov_anqp;
759 const u8 *pos, *end;
760 u16 len;
761 const u8 *osu_ssid;
762 u8 osu_ssid_len;
763 u8 num_providers;
764
765 hs20_free_osu_prov(wpa_s);
766
767 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
768 if (bss->anqp == NULL)
769 continue;
770 prov_anqp = bss->anqp->hs20_osu_providers_list;
771 if (prov_anqp == NULL)
772 continue;
773 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
774 MACSTR, MAC2STR(bss->bssid));
775 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
776 prov_anqp);
777 pos = wpabuf_head(prov_anqp);
778 end = pos + wpabuf_len(prov_anqp);
779
780 /* OSU SSID */
781 if (pos + 1 > end)
782 continue;
783 if (pos + 1 + pos[0] > end) {
784 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
785 "OSU SSID");
786 continue;
787 }
788 osu_ssid_len = *pos++;
789 if (osu_ssid_len > 32) {
790 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
791 "Length %u", osu_ssid_len);
792 continue;
793 }
794 osu_ssid = pos;
795 pos += osu_ssid_len;
796
797 if (pos + 1 > end) {
798 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
799 "Number of OSU Providers");
800 continue;
801 }
802 num_providers = *pos++;
803 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
804 num_providers);
805
806 /* OSU Providers */
807 while (pos + 2 < end && num_providers > 0) {
808 num_providers--;
809 len = WPA_GET_LE16(pos);
810 pos += 2;
5c58c0ce 811 if (len > (unsigned int) (end - pos))
b572df86
JM		 812 break;
813 hs20_osu_add_prov(wpa_s, bss, osu_ssid,
814 osu_ssid_len, pos, len);
815 pos += len;
816 }
817
818 if (pos != end) {
819 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
820 "extra data after OSU Providers",
821 (int) (end - pos));
822 }
823 }
824
825 wpa_s->fetch_osu_icon_in_progress = 1;
826 hs20_next_osu_icon(wpa_s);
827}
828
829
830static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
831 struct wpa_scan_results *scan_res)
832{
833 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
568475b7
JM		 834 if (!wpa_s->fetch_osu_waiting_scan) {
835 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
836 return;
837 }
b572df86
JM		 838 wpa_s->network_select = 0;
839 wpa_s->fetch_all_anqp = 1;
840 wpa_s->fetch_osu_info = 1;
841 wpa_s->fetch_osu_icon_in_progress = 0;
842
843 interworking_start_fetch_anqp(wpa_s);
844}
845
846
847int hs20_fetch_osu(struct wpa_supplicant *wpa_s)
848{
849 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
850 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
851 "interface disabled");
852 return -1;
853 }
854
855 if (wpa_s->scanning) {
856 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
857 "scanning");
858 return -1;
25471fe3 859 }
b572df86
JM		 860
861 if (wpa_s->conf->osu_dir == NULL) {
862 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
863 "osu_dir not configured");
864 return -1;
865 }
866
867 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
868 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
869 "fetch in progress (%d, %d)",
870 wpa_s->fetch_anqp_in_progress,
871 wpa_s->network_select);
872 return -1;
873 }
874
875 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
a6739e19
JM		 876 wpa_s->num_osu_scans = 0;
877 wpa_s->num_prov_found = 0;
878 hs20_start_osu_scan(wpa_s);
879
880 return 0;
881}
882
883
884void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
885{
568475b7 886 wpa_s->fetch_osu_waiting_scan = 1;
a6739e19 887 wpa_s->num_osu_scans++;
b572df86
JM		 888 wpa_s->scan_req = MANUAL_SCAN_REQ;
889 wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
890 wpa_supplicant_req_scan(wpa_s, 0, 0);
b572df86
JM		 891}
892
893
894void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
895{
896 wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
897 interworking_stop_fetch_anqp(wpa_s);
568475b7 898 wpa_s->fetch_osu_waiting_scan = 0;
b572df86
JM		 899 wpa_s->network_select = 0;
900 wpa_s->fetch_osu_info = 0;
901 wpa_s->fetch_osu_icon_in_progress = 0;
902}
903
904
905void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
906{
907 hs20_osu_icon_fetch_result(wpa_s, -1);
908 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
909 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
25471fe3 910}
95a3ea94
JM		 911
912
913void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
914 const char *url, u8 osu_method)
915{
916 if (url)
917 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
918 osu_method, url);
919 else
920 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
921}
7ef69479
JM		 922
923
924void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
925 u16 reauth_delay, const char *url)
926{
927 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
928 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
929 return;
930 }
931
932 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
933 code, reauth_delay, url);
934
935 if (code == HS20_DEAUTH_REASON_CODE_BSS) {
936 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
937 wpa_blacklist_add(wpa_s, wpa_s->bssid);
533536d8
JM		 938 /* TODO: For now, disable full ESS since some drivers may not
939 * support disabling per BSS. */
940 if (wpa_s->current_ssid) {
06c7b7f0
JM		 941 struct os_reltime now;
942 os_get_reltime(&now);
533536d8
JM		 943 if (now.sec + reauth_delay <=
944 wpa_s->current_ssid->disabled_until.sec)
945 return;
946 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
947 reauth_delay);
948 wpa_s->current_ssid->disabled_until.sec =
949 now.sec + reauth_delay;
950 }
7ef69479
JM		 951 }
952
953 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
06c7b7f0
JM		 954 struct os_reltime now;
955 os_get_reltime(&now);
7ef69479
JM		 956 if (now.sec + reauth_delay <=
957 wpa_s->current_ssid->disabled_until.sec)
958 return;
959 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
960 reauth_delay);
961 wpa_s->current_ssid->disabled_until.sec =
962 now.sec + reauth_delay;
963 }
964}
fb2ac53d
AC		 965
966
967void hs20_deinit(struct wpa_supplicant *wpa_s)
968{
969 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
970 hs20_free_osu_prov(wpa_s);
971}
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