1 /*
2 * Copyright (c) 2009, Atheros Communications, Inc.
3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10 #include <sys/stat.h>
11
12 #include "common.h"
13 #include "eloop.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/gas.h"
17 #include "common/wpa_ctrl.h"
18 #include "rsn_supp/wpa.h"
19 #include "wpa_supplicant_i.h"
20 #include "driver_i.h"
21 #include "config.h"
22 #include "scan.h"
23 #include "bss.h"
24 #include "blacklist.h"
25 #include "gas_query.h"
26 #include "interworking.h"
27 #include "hs20_supplicant.h"
28
29
30 #define OSU_MAX_ITEMS 10
31
32 struct osu_lang_string {
33 char lang[4];
34 char text[253];
35 };
36
37 struct osu_icon {
38 u16 width;
39 u16 height;
40 char lang[4];
41 char icon_type[256];
42 char filename[256];
43 unsigned int id;
44 unsigned int failed:1;
45 };
46
47 struct osu_provider {
48 u8 bssid[ETH_ALEN];
49 u8 osu_ssid[SSID_MAX_LEN];
50 u8 osu_ssid_len;
51 char server_uri[256];
52 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
53 char osu_nai[256];
54 struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
55 size_t friendly_name_count;
56 struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
57 size_t serv_desc_count;
58 struct osu_icon icon[OSU_MAX_ITEMS];
59 size_t icon_count;
60 };
61
62
wpas_hs20_add_indication(struct wpabuf * buf,int pps_mo_id)63 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
64 {
65 u8 conf;
66
67 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
68 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
69 wpabuf_put_be24(buf, OUI_WFA);
70 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
71 conf = HS20_VERSION;
72 if (pps_mo_id >= 0)
73 conf |= HS20_PPS_MO_ID_PRESENT;
74 wpabuf_put_u8(buf, conf);
75 if (pps_mo_id >= 0)
76 wpabuf_put_le16(buf, pps_mo_id);
77 }
78
79
is_hs20_network(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)80 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
81 struct wpa_bss *bss)
82 {
83 if (!wpa_s->conf->hs20 || !ssid)
84 return 0;
85
86 if (ssid->parent_cred)
87 return 1;
88
89 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE))
90 return 0;
91
92 /*
93 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that
94 * than cause Hotspot 2.0 connections without indication element getting
95 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element.
96 */
97
98 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X))
99 return 0;
100 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP))
101 return 0;
102 if (ssid->proto != WPA_PROTO_RSN)
103 return 0;
104
105 return 1;
106 }
107
108
hs20_get_pps_mo_id(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)109 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
110 {
111 struct wpa_cred *cred;
112
113 if (ssid == NULL)
114 return 0;
115
116 if (ssid->update_identifier)
117 return ssid->update_identifier;
118
119 if (ssid->parent_cred == NULL)
120 return 0;
121
122 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
123 if (ssid->parent_cred == cred)
124 return cred->update_identifier;
125 }
126
127 return 0;
128 }
129
130
hs20_put_anqp_req(u32 stypes,const u8 * payload,size_t payload_len,struct wpabuf * buf)131 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
132 struct wpabuf *buf)
133 {
134 u8 *len_pos;
135
136 if (buf == NULL)
137 return;
138
139 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
140 wpabuf_put_be24(buf, OUI_WFA);
141 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
142 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
143 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
144 wpabuf_put_u8(buf, 0); /* Reserved */
145 if (payload)
146 wpabuf_put_data(buf, payload, payload_len);
147 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
148 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
149 wpabuf_put_u8(buf, 0); /* Reserved */
150 if (payload)
151 wpabuf_put_data(buf, payload, payload_len);
152 } else {
153 u8 i;
154 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
155 wpabuf_put_u8(buf, 0); /* Reserved */
156 for (i = 0; i < 32; i++) {
157 if (stypes & BIT(i))
158 wpabuf_put_u8(buf, i);
159 }
160 }
161 gas_anqp_set_element_len(buf, len_pos);
162
163 gas_anqp_set_len(buf);
164 }
165
166
hs20_build_anqp_req(u32 stypes,const u8 * payload,size_t payload_len)167 struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
168 size_t payload_len)
169 {
170 struct wpabuf *buf;
171
172 buf = gas_anqp_build_initial_req(0, 100 + payload_len);
173 if (buf == NULL)
174 return NULL;
175
176 hs20_put_anqp_req(stypes, payload, payload_len, buf);
177
178 return buf;
179 }
180
181
hs20_anqp_send_req(struct wpa_supplicant * wpa_s,const u8 * dst,u32 stypes,const u8 * payload,size_t payload_len)182 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
183 const u8 *payload, size_t payload_len)
184 {
185 struct wpabuf *buf;
186 int ret = 0;
187 int freq;
188 struct wpa_bss *bss;
189 int res;
190
191 bss = wpa_bss_get_bssid(wpa_s, dst);
192 if (!bss) {
193 wpa_printf(MSG_WARNING,
194 "ANQP: Cannot send query to unknown BSS "
195 MACSTR, MAC2STR(dst));
196 return -1;
197 }
198
199 wpa_bss_anqp_unshare_alloc(bss);
200 freq = bss->freq;
201
202 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
203 "subtypes 0x%x", MAC2STR(dst), stypes);
204
205 buf = hs20_build_anqp_req(stypes, payload, payload_len);
206 if (buf == NULL)
207 return -1;
208
209 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
210 if (res < 0) {
211 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
212 wpabuf_free(buf);
213 ret = -1;
214 } else
215 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
216 "%u", res);
217
218 return ret;
219 }
220
221
hs20_set_osu_access_permission(const char * osu_dir,const char * fname)222 static void hs20_set_osu_access_permission(const char *osu_dir,
223 const char *fname)
224 {
225 struct stat statbuf;
226
227 /* Get OSU directory information */
228 if (stat(osu_dir, &statbuf) < 0) {
229 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
230 osu_dir);
231 return;
232 }
233
234 if (chmod(fname, statbuf.st_mode) < 0) {
235 wpa_printf(MSG_WARNING,
236 "Cannot change the permissions for %s", fname);
237 return;
238 }
239
240 if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
241 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
242 fname);
243 }
244 }
245
hs20_process_icon_binary_file(struct wpa_supplicant * wpa_s,const u8 * sa,const u8 * pos,size_t slen)246 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
247 const u8 *sa, const u8 *pos,
248 size_t slen)
249 {
250 char fname[256];
251 int png;
252 FILE *f;
253 u16 data_len;
254
255 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File",
256 MAC2STR(sa));
257
258 if (slen < 4) {
259 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
260 "value from " MACSTR, MAC2STR(sa));
261 return -1;
262 }
263
264 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
265 if (*pos != 0)
266 return -1;
267 pos++;
268 slen--;
269
270 if ((size_t) 1 + pos[0] > slen) {
271 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
272 "value from " MACSTR, MAC2STR(sa));
273 return -1;
274 }
275 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
276 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
277 slen -= 1 + pos[0];
278 pos += 1 + pos[0];
279
280 if (slen < 2) {
281 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
282 "value from " MACSTR, MAC2STR(sa));
283 return -1;
284 }
285 data_len = WPA_GET_LE16(pos);
286 pos += 2;
287 slen -= 2;
288
289 if (data_len > slen) {
290 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
291 "value from " MACSTR, MAC2STR(sa));
292 return -1;
293 }
294
295 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
296 if (wpa_s->conf->osu_dir == NULL)
297 return -1;
298
299 wpa_s->osu_icon_id++;
300 if (wpa_s->osu_icon_id == 0)
301 wpa_s->osu_icon_id++;
302 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
303 wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
304 png ? "png" : "icon");
305 f = fopen(fname, "wb");
306 if (f == NULL)
307 return -1;
308
309 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
310
311 if (fwrite(pos, slen, 1, f) != 1) {
312 fclose(f);
313 unlink(fname);
314 return -1;
315 }
316 fclose(f);
317
318 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname);
319 return 0;
320 }
321
322
hs20_continue_icon_fetch(void * eloop_ctx,void * sock_ctx)323 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
324 {
325 struct wpa_supplicant *wpa_s = eloop_ctx;
326 if (wpa_s->fetch_osu_icon_in_progress)
327 hs20_next_osu_icon(wpa_s);
328 }
329
330
hs20_osu_icon_fetch_result(struct wpa_supplicant * wpa_s,int res)331 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
332 {
333 size_t i, j;
334 struct os_reltime now, tmp;
335 int dur;
336
337 os_get_reltime(&now);
338 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
339 dur = tmp.sec * 1000 + tmp.usec / 1000;
340 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
341 dur, res);
342
343 for (i = 0; i < wpa_s->osu_prov_count; i++) {
344 struct osu_provider *osu = &wpa_s->osu_prov[i];
345 for (j = 0; j < osu->icon_count; j++) {
346 struct osu_icon *icon = &osu->icon[j];
347 if (icon->id || icon->failed)
348 continue;
349 if (res < 0)
350 icon->failed = 1;
351 else
352 icon->id = wpa_s->osu_icon_id;
353 return;
354 }
355 }
356 }
357
358
hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,const u8 * sa,const u8 * data,size_t slen)359 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
360 struct wpa_bss *bss, const u8 *sa,
361 const u8 *data, size_t slen)
362 {
363 const u8 *pos = data;
364 u8 subtype;
365 struct wpa_bss_anqp *anqp = NULL;
366 int ret;
367
368 if (slen < 2)
369 return;
370
371 if (bss)
372 anqp = bss->anqp;
373
374 subtype = *pos++;
375 slen--;
376
377 pos++; /* Reserved */
378 slen--;
379
380 switch (subtype) {
381 case HS20_STYPE_CAPABILITY_LIST:
382 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
383 " HS Capability List", MAC2STR(sa));
384 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
385 if (anqp) {
386 wpabuf_free(anqp->hs20_capability_list);
387 anqp->hs20_capability_list =
388 wpabuf_alloc_copy(pos, slen);
389 }
390 break;
391 case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
392 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
393 " Operator Friendly Name", MAC2STR(sa));
394 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
395 if (anqp) {
396 wpabuf_free(anqp->hs20_operator_friendly_name);
397 anqp->hs20_operator_friendly_name =
398 wpabuf_alloc_copy(pos, slen);
399 }
400 break;
401 case HS20_STYPE_WAN_METRICS:
402 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen);
403 if (slen < 13) {
404 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN "
405 "Metrics value from " MACSTR, MAC2STR(sa));
406 break;
407 }
408 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
409 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa),
410 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5),
411 pos[9], pos[10], WPA_GET_LE16(pos + 11));
412 if (anqp) {
413 wpabuf_free(anqp->hs20_wan_metrics);
414 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
415 }
416 break;
417 case HS20_STYPE_CONNECTION_CAPABILITY:
418 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
419 " Connection Capability", MAC2STR(sa));
420 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
421 if (anqp) {
422 wpabuf_free(anqp->hs20_connection_capability);
423 anqp->hs20_connection_capability =
424 wpabuf_alloc_copy(pos, slen);
425 }
426 break;
427 case HS20_STYPE_OPERATING_CLASS:
428 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
429 " Operating Class", MAC2STR(sa));
430 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
431 if (anqp) {
432 wpabuf_free(anqp->hs20_operating_class);
433 anqp->hs20_operating_class =
434 wpabuf_alloc_copy(pos, slen);
435 }
436 break;
437 case HS20_STYPE_OSU_PROVIDERS_LIST:
438 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
439 " OSU Providers list", MAC2STR(sa));
440 wpa_s->num_prov_found++;
441 if (anqp) {
442 wpabuf_free(anqp->hs20_osu_providers_list);
443 anqp->hs20_osu_providers_list =
444 wpabuf_alloc_copy(pos, slen);
445 }
446 break;
447 case HS20_STYPE_ICON_BINARY_FILE:
448 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen);
449 if (wpa_s->fetch_osu_icon_in_progress) {
450 hs20_osu_icon_fetch_result(wpa_s, ret);
451 eloop_cancel_timeout(hs20_continue_icon_fetch,
452 wpa_s, NULL);
453 eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
454 wpa_s, NULL);
455 }
456 break;
457 default:
458 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
459 break;
460 }
461 }
462
463
hs20_notify_parse_done(struct wpa_supplicant * wpa_s)464 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
465 {
466 if (!wpa_s->fetch_osu_icon_in_progress)
467 return;
468 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
469 return;
470 /*
471 * We are going through icon fetch, but no icon response was received.
472 * Assume this means the current AP could not provide an answer to avoid
473 * getting stuck in fetch iteration.
474 */
475 hs20_icon_fetch_failed(wpa_s);
476 }
477
478
hs20_free_osu_prov_entry(struct osu_provider * prov)479 static void hs20_free_osu_prov_entry(struct osu_provider *prov)
480 {
481 }
482
483
hs20_free_osu_prov(struct wpa_supplicant * wpa_s)484 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
485 {
486 size_t i;
487 for (i = 0; i < wpa_s->osu_prov_count; i++)
488 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
489 os_free(wpa_s->osu_prov);
490 wpa_s->osu_prov = NULL;
491 wpa_s->osu_prov_count = 0;
492 }
493
494
hs20_osu_fetch_done(struct wpa_supplicant * wpa_s)495 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
496 {
497 char fname[256];
498 FILE *f;
499 size_t i, j;
500
501 wpa_s->fetch_osu_info = 0;
502 wpa_s->fetch_osu_icon_in_progress = 0;
503
504 if (wpa_s->conf->osu_dir == NULL) {
505 hs20_free_osu_prov(wpa_s);
506 wpa_s->fetch_anqp_in_progress = 0;
507 return;
508 }
509
510 snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
511 wpa_s->conf->osu_dir);
512 f = fopen(fname, "w");
513 if (f == NULL) {
514 hs20_free_osu_prov(wpa_s);
515 return;
516 }
517
518 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
519
520 for (i = 0; i < wpa_s->osu_prov_count; i++) {
521 struct osu_provider *osu = &wpa_s->osu_prov[i];
522 if (i > 0)
523 fprintf(f, "\n");
524 fprintf(f, "OSU-PROVIDER " MACSTR "\n"
525 "uri=%s\n"
526 "methods=%08x\n",
527 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
528 if (osu->osu_ssid_len) {
529 fprintf(f, "osu_ssid=%s\n",
530 wpa_ssid_txt(osu->osu_ssid,
531 osu->osu_ssid_len));
532 }
533 if (osu->osu_nai[0])
534 fprintf(f, "osu_nai=%s\n", osu->osu_nai);
535 for (j = 0; j < osu->friendly_name_count; j++) {
536 fprintf(f, "friendly_name=%s:%s\n",
537 osu->friendly_name[j].lang,
538 osu->friendly_name[j].text);
539 }
540 for (j = 0; j < osu->serv_desc_count; j++) {
541 fprintf(f, "desc=%s:%s\n",
542 osu->serv_desc[j].lang,
543 osu->serv_desc[j].text);
544 }
545 for (j = 0; j < osu->icon_count; j++) {
546 struct osu_icon *icon = &osu->icon[j];
547 if (icon->failed)
548 continue; /* could not fetch icon */
549 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
550 icon->id, icon->width, icon->height, icon->lang,
551 icon->icon_type, icon->filename);
552 }
553 }
554 fclose(f);
555 hs20_free_osu_prov(wpa_s);
556
557 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
558 wpa_s->fetch_anqp_in_progress = 0;
559 }
560
561
hs20_next_osu_icon(struct wpa_supplicant * wpa_s)562 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
563 {
564 size_t i, j;
565
566 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
567
568 for (i = 0; i < wpa_s->osu_prov_count; i++) {
569 struct osu_provider *osu = &wpa_s->osu_prov[i];
570 for (j = 0; j < osu->icon_count; j++) {
571 struct osu_icon *icon = &osu->icon[j];
572 if (icon->id || icon->failed)
573 continue;
574
575 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
576 "from " MACSTR, icon->filename,
577 MAC2STR(osu->bssid));
578 os_get_reltime(&wpa_s->osu_icon_fetch_start);
579 if (hs20_anqp_send_req(wpa_s, osu->bssid,
580 BIT(HS20_STYPE_ICON_REQUEST),
581 (u8 *) icon->filename,
582 os_strlen(icon->filename)) < 0) {
583 icon->failed = 1;
584 continue;
585 }
586 return;
587 }
588 }
589
590 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
591 hs20_osu_fetch_done(wpa_s);
592 }
593
594
hs20_osu_add_prov(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,const u8 * osu_ssid,u8 osu_ssid_len,const u8 * pos,size_t len)595 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
596 const u8 *osu_ssid, u8 osu_ssid_len,
597 const u8 *pos, size_t len)
598 {
599 struct osu_provider *prov;
600 const u8 *end = pos + len;
601 u16 len2;
602 const u8 *pos2;
603 u8 uri_len, osu_method_len, osu_nai_len;
604
605 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
606 prov = os_realloc_array(wpa_s->osu_prov,
607 wpa_s->osu_prov_count + 1,
608 sizeof(*prov));
609 if (prov == NULL)
610 return;
611 wpa_s->osu_prov = prov;
612 prov = &prov[wpa_s->osu_prov_count];
613 os_memset(prov, 0, sizeof(*prov));
614
615 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
616 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
617 prov->osu_ssid_len = osu_ssid_len;
618
619 /* OSU Friendly Name Length */
620 if (pos + 2 > end) {
621 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
622 "Friendly Name Length");
623 return;
624 }
625 len2 = WPA_GET_LE16(pos);
626 pos += 2;
627 if (len2 > end - pos) {
628 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
629 "Friendly Name Duples");
630 return;
631 }
632 pos2 = pos;
633 pos += len2;
634
635 /* OSU Friendly Name Duples */
636 while (pos2 + 4 <= pos && prov->friendly_name_count < OSU_MAX_ITEMS) {
637 struct osu_lang_string *f;
638 if (pos2 + 1 + pos2[0] > pos || pos2[0] < 3) {
639 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
640 break;
641 }
642 f = &prov->friendly_name[prov->friendly_name_count++];
643 os_memcpy(f->lang, pos2 + 1, 3);
644 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
645 pos2 += 1 + pos2[0];
646 }
647
648 /* OSU Server URI */
649 if (pos + 1 > end) {
650 wpa_printf(MSG_DEBUG,
651 "HS 2.0: Not enough room for OSU Server URI length");
652 return;
653 }
654 uri_len = *pos++;
655 if (uri_len > end - pos) {
656 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
657 "URI");
658 return;
659 }
660 os_memcpy(prov->server_uri, pos, uri_len);
661 pos += uri_len;
662
663 /* OSU Method list */
664 if (pos + 1 > end) {
665 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
666 "list length");
667 return;
668 }
669 osu_method_len = pos[0];
670 if (osu_method_len > end - pos - 1) {
671 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
672 "list");
673 return;
674 }
675 pos2 = pos + 1;
676 pos += 1 + osu_method_len;
677 while (pos2 < pos) {
678 if (*pos2 < 32)
679 prov->osu_methods |= BIT(*pos2);
680 pos2++;
681 }
682
683 /* Icons Available Length */
684 if (pos + 2 > end) {
685 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
686 "Available Length");
687 return;
688 }
689 len2 = WPA_GET_LE16(pos);
690 pos += 2;
691 if (len2 > end - pos) {
692 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
693 "Available");
694 return;
695 }
696 pos2 = pos;
697 pos += len2;
698
699 /* Icons Available */
700 while (pos2 < pos) {
701 struct osu_icon *icon = &prov->icon[prov->icon_count];
702 u8 flen;
703
704 if (pos2 + 2 + 2 + 3 + 1 + 1 > pos) {
705 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
706 break;
707 }
708
709 icon->width = WPA_GET_LE16(pos2);
710 pos2 += 2;
711 icon->height = WPA_GET_LE16(pos2);
712 pos2 += 2;
713 os_memcpy(icon->lang, pos2, 3);
714 pos2 += 3;
715
716 flen = pos2[0];
717 if (flen > pos - pos2 - 1) {
718 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
719 break;
720 }
721 os_memcpy(icon->icon_type, pos2 + 1, flen);
722 pos2 += 1 + flen;
723
724 if (pos2 + 1 > pos) {
725 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
726 "Filename length");
727 break;
728 }
729 flen = pos2[0];
730 if (flen > pos - pos2 - 1) {
731 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
732 "Filename");
733 break;
734 }
735 os_memcpy(icon->filename, pos2 + 1, flen);
736 pos2 += 1 + flen;
737
738 prov->icon_count++;
739 }
740
741 /* OSU_NAI */
742 if (pos + 1 > end) {
743 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
744 return;
745 }
746 osu_nai_len = pos[0];
747 if (osu_nai_len > end - pos - 1) {
748 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
749 return;
750 }
751 os_memcpy(prov->osu_nai, pos + 1, osu_nai_len);
752 pos += 1 + osu_nai_len;
753
754 /* OSU Service Description Length */
755 if (pos + 2 > end) {
756 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
757 "Service Description Length");
758 return;
759 }
760 len2 = WPA_GET_LE16(pos);
761 pos += 2;
762 if (len2 > end - pos) {
763 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
764 "Service Description Duples");
765 return;
766 }
767 pos2 = pos;
768 pos += len2;
769
770 /* OSU Service Description Duples */
771 while (pos2 + 4 <= pos && prov->serv_desc_count < OSU_MAX_ITEMS) {
772 struct osu_lang_string *f;
773 u8 descr_len;
774
775 descr_len = pos2[0];
776 if (descr_len > pos - pos2 - 1 || descr_len < 3) {
777 wpa_printf(MSG_DEBUG, "Invalid OSU Service "
778 "Description");
779 break;
780 }
781 f = &prov->serv_desc[prov->serv_desc_count++];
782 os_memcpy(f->lang, pos2 + 1, 3);
783 os_memcpy(f->text, pos2 + 1 + 3, descr_len - 3);
784 pos2 += 1 + descr_len;
785 }
786
787 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
788 MAC2STR(bss->bssid));
789 wpa_s->osu_prov_count++;
790 }
791
792
hs20_osu_icon_fetch(struct wpa_supplicant * wpa_s)793 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
794 {
795 struct wpa_bss *bss;
796 struct wpabuf *prov_anqp;
797 const u8 *pos, *end;
798 u16 len;
799 const u8 *osu_ssid;
800 u8 osu_ssid_len;
801 u8 num_providers;
802
803 hs20_free_osu_prov(wpa_s);
804
805 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
806 if (bss->anqp == NULL)
807 continue;
808 prov_anqp = bss->anqp->hs20_osu_providers_list;
809 if (prov_anqp == NULL)
810 continue;
811 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
812 MACSTR, MAC2STR(bss->bssid));
813 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
814 prov_anqp);
815 pos = wpabuf_head(prov_anqp);
816 end = pos + wpabuf_len(prov_anqp);
817
818 /* OSU SSID */
819 if (pos + 1 > end)
820 continue;
821 if (pos + 1 + pos[0] > end) {
822 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
823 "OSU SSID");
824 continue;
825 }
826 osu_ssid_len = *pos++;
827 if (osu_ssid_len > SSID_MAX_LEN) {
828 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
829 "Length %u", osu_ssid_len);
830 continue;
831 }
832 osu_ssid = pos;
833 pos += osu_ssid_len;
834
835 if (pos + 1 > end) {
836 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
837 "Number of OSU Providers");
838 continue;
839 }
840 num_providers = *pos++;
841 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
842 num_providers);
843
844 /* OSU Providers */
845 while (pos + 2 < end && num_providers > 0) {
846 num_providers--;
847 len = WPA_GET_LE16(pos);
848 pos += 2;
849 if (len > (unsigned int) (end - pos))
850 break;
851 hs20_osu_add_prov(wpa_s, bss, osu_ssid,
852 osu_ssid_len, pos, len);
853 pos += len;
854 }
855
856 if (pos != end) {
857 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
858 "extra data after OSU Providers",
859 (int) (end - pos));
860 }
861 }
862
863 wpa_s->fetch_osu_icon_in_progress = 1;
864 hs20_next_osu_icon(wpa_s);
865 }
866
867
hs20_osu_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)868 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
869 struct wpa_scan_results *scan_res)
870 {
871 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
872 if (!wpa_s->fetch_osu_waiting_scan) {
873 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
874 return;
875 }
876 wpa_s->network_select = 0;
877 wpa_s->fetch_all_anqp = 1;
878 wpa_s->fetch_osu_info = 1;
879 wpa_s->fetch_osu_icon_in_progress = 0;
880
881 interworking_start_fetch_anqp(wpa_s);
882 }
883
884
hs20_fetch_osu(struct wpa_supplicant * wpa_s)885 int hs20_fetch_osu(struct wpa_supplicant *wpa_s)
886 {
887 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
888 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
889 "interface disabled");
890 return -1;
891 }
892
893 if (wpa_s->scanning) {
894 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
895 "scanning");
896 return -1;
897 }
898
899 if (wpa_s->conf->osu_dir == NULL) {
900 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
901 "osu_dir not configured");
902 return -1;
903 }
904
905 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
906 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
907 "fetch in progress (%d, %d)",
908 wpa_s->fetch_anqp_in_progress,
909 wpa_s->network_select);
910 return -1;
911 }
912
913 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
914 wpa_s->num_osu_scans = 0;
915 wpa_s->num_prov_found = 0;
916 hs20_start_osu_scan(wpa_s);
917
918 return 0;
919 }
920
921
hs20_start_osu_scan(struct wpa_supplicant * wpa_s)922 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
923 {
924 wpa_s->fetch_osu_waiting_scan = 1;
925 wpa_s->num_osu_scans++;
926 wpa_s->scan_req = MANUAL_SCAN_REQ;
927 wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
928 wpa_supplicant_req_scan(wpa_s, 0, 0);
929 }
930
931
hs20_cancel_fetch_osu(struct wpa_supplicant * wpa_s)932 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
933 {
934 wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
935 interworking_stop_fetch_anqp(wpa_s);
936 wpa_s->fetch_osu_waiting_scan = 0;
937 wpa_s->network_select = 0;
938 wpa_s->fetch_osu_info = 0;
939 wpa_s->fetch_osu_icon_in_progress = 0;
940 }
941
942
hs20_icon_fetch_failed(struct wpa_supplicant * wpa_s)943 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
944 {
945 hs20_osu_icon_fetch_result(wpa_s, -1);
946 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
947 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
948 }
949
950
hs20_rx_subscription_remediation(struct wpa_supplicant * wpa_s,const char * url,u8 osu_method)951 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
952 const char *url, u8 osu_method)
953 {
954 if (url)
955 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
956 osu_method, url);
957 else
958 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
959 }
960
961
hs20_rx_deauth_imminent_notice(struct wpa_supplicant * wpa_s,u8 code,u16 reauth_delay,const char * url)962 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
963 u16 reauth_delay, const char *url)
964 {
965 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
966 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
967 return;
968 }
969
970 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
971 code, reauth_delay, url);
972
973 if (code == HS20_DEAUTH_REASON_CODE_BSS) {
974 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
975 wpa_blacklist_add(wpa_s, wpa_s->bssid);
976 /* TODO: For now, disable full ESS since some drivers may not
977 * support disabling per BSS. */
978 if (wpa_s->current_ssid) {
979 struct os_reltime now;
980 os_get_reltime(&now);
981 if (now.sec + reauth_delay <=
982 wpa_s->current_ssid->disabled_until.sec)
983 return;
984 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
985 reauth_delay);
986 wpa_s->current_ssid->disabled_until.sec =
987 now.sec + reauth_delay;
988 }
989 }
990
991 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
992 struct os_reltime now;
993 os_get_reltime(&now);
994 if (now.sec + reauth_delay <=
995 wpa_s->current_ssid->disabled_until.sec)
996 return;
997 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
998 reauth_delay);
999 wpa_s->current_ssid->disabled_until.sec =
1000 now.sec + reauth_delay;
1001 }
1002 }
1003
1004
hs20_deinit(struct wpa_supplicant * wpa_s)1005 void hs20_deinit(struct wpa_supplicant *wpa_s)
1006 {
1007 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1008 hs20_free_osu_prov(wpa_s);
1009 }
1010