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 #include "base64.h"
29
30
31 #define OSU_MAX_ITEMS 10
32
33 struct osu_lang_string {
34 char lang[4];
35 char text[253];
36 };
37
38 struct osu_icon {
39 u16 width;
40 u16 height;
41 char lang[4];
42 char icon_type[256];
43 char filename[256];
44 unsigned int id;
45 unsigned int failed:1;
46 };
47
48 struct osu_provider {
49 u8 bssid[ETH_ALEN];
50 u8 osu_ssid[SSID_MAX_LEN];
51 u8 osu_ssid_len;
52 char server_uri[256];
53 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
54 char osu_nai[256];
55 struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
56 size_t friendly_name_count;
57 struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
58 size_t serv_desc_count;
59 struct osu_icon icon[OSU_MAX_ITEMS];
60 size_t icon_count;
61 };
62
63
wpas_hs20_add_indication(struct wpabuf * buf,int pps_mo_id)64 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
65 {
66 u8 conf;
67
68 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
69 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
70 wpabuf_put_be24(buf, OUI_WFA);
71 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
72 conf = HS20_VERSION;
73 if (pps_mo_id >= 0)
74 conf |= HS20_PPS_MO_ID_PRESENT;
75 wpabuf_put_u8(buf, conf);
76 if (pps_mo_id >= 0)
77 wpabuf_put_le16(buf, pps_mo_id);
78 }
79
80
is_hs20_network(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)81 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
82 struct wpa_bss *bss)
83 {
84 if (!wpa_s->conf->hs20 || !ssid)
85 return 0;
86
87 if (ssid->parent_cred)
88 return 1;
89
90 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE))
91 return 0;
92
93 /*
94 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that
95 * than cause Hotspot 2.0 connections without indication element getting
96 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element.
97 */
98
99 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X))
100 return 0;
101 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP))
102 return 0;
103 if (ssid->proto != WPA_PROTO_RSN)
104 return 0;
105
106 return 1;
107 }
108
109
hs20_get_pps_mo_id(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)110 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
111 {
112 struct wpa_cred *cred;
113
114 if (ssid == NULL)
115 return 0;
116
117 if (ssid->update_identifier)
118 return ssid->update_identifier;
119
120 if (ssid->parent_cred == NULL)
121 return 0;
122
123 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
124 if (ssid->parent_cred == cred)
125 return cred->update_identifier;
126 }
127
128 return 0;
129 }
130
131
hs20_put_anqp_req(u32 stypes,const u8 * payload,size_t payload_len,struct wpabuf * buf)132 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
133 struct wpabuf *buf)
134 {
135 u8 *len_pos;
136
137 if (buf == NULL)
138 return;
139
140 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
141 wpabuf_put_be24(buf, OUI_WFA);
142 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
143 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
144 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
145 wpabuf_put_u8(buf, 0); /* Reserved */
146 if (payload)
147 wpabuf_put_data(buf, payload, payload_len);
148 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
149 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
150 wpabuf_put_u8(buf, 0); /* Reserved */
151 if (payload)
152 wpabuf_put_data(buf, payload, payload_len);
153 } else {
154 u8 i;
155 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
156 wpabuf_put_u8(buf, 0); /* Reserved */
157 for (i = 0; i < 32; i++) {
158 if (stypes & BIT(i))
159 wpabuf_put_u8(buf, i);
160 }
161 }
162 gas_anqp_set_element_len(buf, len_pos);
163
164 gas_anqp_set_len(buf);
165 }
166
167
hs20_build_anqp_req(u32 stypes,const u8 * payload,size_t payload_len)168 struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
169 size_t payload_len)
170 {
171 struct wpabuf *buf;
172
173 buf = gas_anqp_build_initial_req(0, 100 + payload_len);
174 if (buf == NULL)
175 return NULL;
176
177 hs20_put_anqp_req(stypes, payload, payload_len, buf);
178
179 return buf;
180 }
181
182
hs20_anqp_send_req(struct wpa_supplicant * wpa_s,const u8 * dst,u32 stypes,const u8 * payload,size_t payload_len,int inmem)183 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
184 const u8 *payload, size_t payload_len, int inmem)
185 {
186 struct wpabuf *buf;
187 int ret = 0;
188 int freq;
189 struct wpa_bss *bss;
190 int res;
191 struct icon_entry *icon_entry;
192
193 bss = wpa_bss_get_bssid(wpa_s, dst);
194 if (!bss) {
195 wpa_printf(MSG_WARNING,
196 "ANQP: Cannot send query to unknown BSS "
197 MACSTR, MAC2STR(dst));
198 return -1;
199 }
200
201 wpa_bss_anqp_unshare_alloc(bss);
202 freq = bss->freq;
203
204 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
205 "subtypes 0x%x", MAC2STR(dst), stypes);
206
207 buf = hs20_build_anqp_req(stypes, payload, payload_len);
208 if (buf == NULL)
209 return -1;
210
211 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
212 if (res < 0) {
213 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
214 wpabuf_free(buf);
215 return -1;
216 } else
217 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
218 "%u", res);
219
220 if (inmem) {
221 icon_entry = os_zalloc(sizeof(struct icon_entry));
222 if (!icon_entry)
223 return -1;
224 os_memcpy(icon_entry->bssid, dst, ETH_ALEN);
225 icon_entry->file_name = os_malloc(payload_len + 1);
226 if (!icon_entry->file_name) {
227 os_free(icon_entry);
228 return -1;
229 }
230 os_memcpy(icon_entry->file_name, payload, payload_len);
231 icon_entry->file_name[payload_len] = '\0';
232 icon_entry->dialog_token = res;
233
234 dl_list_add(&wpa_s->icon_head, &icon_entry->list);
235 }
236
237 return ret;
238 }
239
240
hs20_find_icon(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * file_name)241 static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s,
242 const u8 *bssid,
243 const char *file_name)
244 {
245 struct icon_entry *icon;
246
247 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
248 if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 &&
249 os_strcmp(icon->file_name, file_name) == 0 && icon->image)
250 return icon;
251 }
252
253 return NULL;
254 }
255
256
hs20_get_icon(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * file_name,size_t offset,size_t size,char * reply,size_t buf_len)257 int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
258 const char *file_name, size_t offset, size_t size,
259 char *reply, size_t buf_len)
260 {
261 struct icon_entry *icon;
262 size_t out_size;
263 unsigned char *b64;
264 size_t b64_size;
265 int reply_size;
266
267 wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)",
268 MAC2STR(bssid), file_name, (unsigned int) offset,
269 (unsigned int) size, (unsigned int) buf_len);
270
271 icon = hs20_find_icon(wpa_s, bssid, file_name);
272 if (!icon || !icon->image || offset >= icon->image_len)
273 return -1;
274 if (size > icon->image_len - offset)
275 size = icon->image_len - offset;
276 out_size = buf_len - 3 /* max base64 padding */;
277 if (size * 4 > out_size * 3)
278 size = out_size * 3 / 4;
279 if (size == 0)
280 return -1;
281
282 b64 = base64_encode(&icon->image[offset], size, &b64_size);
283 if (buf_len >= b64_size) {
284 os_memcpy(reply, b64, b64_size);
285 reply_size = b64_size;
286 } else {
287 reply_size = -1;
288 }
289 os_free(b64);
290 return reply_size;
291 }
292
293
hs20_free_icon_entry(struct icon_entry * icon)294 static void hs20_free_icon_entry(struct icon_entry *icon)
295 {
296 wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR
297 " dialog_token=%u file_name=%s image_len=%u",
298 MAC2STR(icon->bssid), icon->dialog_token,
299 icon->file_name ? icon->file_name : "N/A",
300 (unsigned int) icon->image_len);
301 os_free(icon->file_name);
302 os_free(icon->image);
303 os_free(icon);
304 }
305
306
hs20_del_icon(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * file_name)307 int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
308 const char *file_name)
309 {
310 struct icon_entry *icon, *tmp;
311 int count = 0;
312
313 if (!bssid)
314 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons");
315 else if (!file_name)
316 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for "
317 MACSTR, MAC2STR(bssid));
318 else
319 wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for "
320 MACSTR " file name %s", MAC2STR(bssid), file_name);
321
322 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
323 list) {
324 if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) &&
325 (!file_name ||
326 os_strcmp(icon->file_name, file_name) == 0)) {
327 dl_list_del(&icon->list);
328 hs20_free_icon_entry(icon);
329 count++;
330 }
331 }
332 return count == 0 ? -1 : 0;
333 }
334
335
hs20_set_osu_access_permission(const char * osu_dir,const char * fname)336 static void hs20_set_osu_access_permission(const char *osu_dir,
337 const char *fname)
338 {
339 struct stat statbuf;
340
341 /* Get OSU directory information */
342 if (stat(osu_dir, &statbuf) < 0) {
343 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
344 osu_dir);
345 return;
346 }
347
348 if (chmod(fname, statbuf.st_mode) < 0) {
349 wpa_printf(MSG_WARNING,
350 "Cannot change the permissions for %s", fname);
351 return;
352 }
353
354 if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
355 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
356 fname);
357 }
358 }
359
360
hs20_remove_duplicate_icons(struct wpa_supplicant * wpa_s,struct icon_entry * new_icon)361 static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s,
362 struct icon_entry *new_icon)
363 {
364 struct icon_entry *icon, *tmp;
365
366 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
367 list) {
368 if (icon == new_icon)
369 continue;
370 if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 &&
371 os_strcmp(icon->file_name, new_icon->file_name) == 0) {
372 dl_list_del(&icon->list);
373 hs20_free_icon_entry(icon);
374 }
375 }
376 }
377
378
hs20_process_icon_binary_file(struct wpa_supplicant * wpa_s,const u8 * sa,const u8 * pos,size_t slen,u8 dialog_token)379 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
380 const u8 *sa, const u8 *pos,
381 size_t slen, u8 dialog_token)
382 {
383 char fname[256];
384 int png;
385 FILE *f;
386 u16 data_len;
387 struct icon_entry *icon;
388
389 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
390 if (icon->dialog_token == dialog_token && !icon->image &&
391 os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) {
392 icon->image = os_malloc(slen);
393 if (!icon->image)
394 return -1;
395 os_memcpy(icon->image, pos, slen);
396 icon->image_len = slen;
397 hs20_remove_duplicate_icons(wpa_s, icon);
398 wpa_msg(wpa_s, MSG_INFO,
399 "RX-HS20-ICON " MACSTR " %s %u",
400 MAC2STR(sa), icon->file_name,
401 (unsigned int) icon->image_len);
402 return 0;
403 }
404 }
405
406 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File",
407 MAC2STR(sa));
408
409 if (slen < 4) {
410 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
411 "value from " MACSTR, MAC2STR(sa));
412 return -1;
413 }
414
415 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
416 if (*pos != 0)
417 return -1;
418 pos++;
419 slen--;
420
421 if ((size_t) 1 + pos[0] > slen) {
422 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
423 "value from " MACSTR, MAC2STR(sa));
424 return -1;
425 }
426 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
427 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
428 slen -= 1 + pos[0];
429 pos += 1 + pos[0];
430
431 if (slen < 2) {
432 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
433 "value from " MACSTR, MAC2STR(sa));
434 return -1;
435 }
436 data_len = WPA_GET_LE16(pos);
437 pos += 2;
438 slen -= 2;
439
440 if (data_len > slen) {
441 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
442 "value from " MACSTR, MAC2STR(sa));
443 return -1;
444 }
445
446 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
447 if (wpa_s->conf->osu_dir == NULL)
448 return -1;
449
450 wpa_s->osu_icon_id++;
451 if (wpa_s->osu_icon_id == 0)
452 wpa_s->osu_icon_id++;
453 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
454 wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
455 png ? "png" : "icon");
456 f = fopen(fname, "wb");
457 if (f == NULL)
458 return -1;
459
460 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
461
462 if (fwrite(pos, slen, 1, f) != 1) {
463 fclose(f);
464 unlink(fname);
465 return -1;
466 }
467 fclose(f);
468
469 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname);
470 return 0;
471 }
472
473
hs20_continue_icon_fetch(void * eloop_ctx,void * sock_ctx)474 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
475 {
476 struct wpa_supplicant *wpa_s = eloop_ctx;
477 if (wpa_s->fetch_osu_icon_in_progress)
478 hs20_next_osu_icon(wpa_s);
479 }
480
481
hs20_osu_icon_fetch_result(struct wpa_supplicant * wpa_s,int res)482 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
483 {
484 size_t i, j;
485 struct os_reltime now, tmp;
486 int dur;
487
488 os_get_reltime(&now);
489 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
490 dur = tmp.sec * 1000 + tmp.usec / 1000;
491 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
492 dur, res);
493
494 for (i = 0; i < wpa_s->osu_prov_count; i++) {
495 struct osu_provider *osu = &wpa_s->osu_prov[i];
496 for (j = 0; j < osu->icon_count; j++) {
497 struct osu_icon *icon = &osu->icon[j];
498 if (icon->id || icon->failed)
499 continue;
500 if (res < 0)
501 icon->failed = 1;
502 else
503 icon->id = wpa_s->osu_icon_id;
504 return;
505 }
506 }
507 }
508
509
hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,const u8 * sa,const u8 * data,size_t slen,u8 dialog_token)510 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
511 struct wpa_bss *bss, const u8 *sa,
512 const u8 *data, size_t slen, u8 dialog_token)
513 {
514 const u8 *pos = data;
515 u8 subtype;
516 struct wpa_bss_anqp *anqp = NULL;
517 int ret;
518
519 if (slen < 2)
520 return;
521
522 if (bss)
523 anqp = bss->anqp;
524
525 subtype = *pos++;
526 slen--;
527
528 pos++; /* Reserved */
529 slen--;
530
531 switch (subtype) {
532 case HS20_STYPE_CAPABILITY_LIST:
533 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
534 " HS Capability List", MAC2STR(sa));
535 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
536 if (anqp) {
537 wpabuf_free(anqp->hs20_capability_list);
538 anqp->hs20_capability_list =
539 wpabuf_alloc_copy(pos, slen);
540 }
541 break;
542 case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
543 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
544 " Operator Friendly Name", MAC2STR(sa));
545 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
546 if (anqp) {
547 wpabuf_free(anqp->hs20_operator_friendly_name);
548 anqp->hs20_operator_friendly_name =
549 wpabuf_alloc_copy(pos, slen);
550 }
551 break;
552 case HS20_STYPE_WAN_METRICS:
553 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen);
554 if (slen < 13) {
555 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN "
556 "Metrics value from " MACSTR, MAC2STR(sa));
557 break;
558 }
559 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
560 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa),
561 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5),
562 pos[9], pos[10], WPA_GET_LE16(pos + 11));
563 if (anqp) {
564 wpabuf_free(anqp->hs20_wan_metrics);
565 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
566 }
567 break;
568 case HS20_STYPE_CONNECTION_CAPABILITY:
569 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
570 " Connection Capability", MAC2STR(sa));
571 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
572 if (anqp) {
573 wpabuf_free(anqp->hs20_connection_capability);
574 anqp->hs20_connection_capability =
575 wpabuf_alloc_copy(pos, slen);
576 }
577 break;
578 case HS20_STYPE_OPERATING_CLASS:
579 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
580 " Operating Class", MAC2STR(sa));
581 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
582 if (anqp) {
583 wpabuf_free(anqp->hs20_operating_class);
584 anqp->hs20_operating_class =
585 wpabuf_alloc_copy(pos, slen);
586 }
587 break;
588 case HS20_STYPE_OSU_PROVIDERS_LIST:
589 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
590 " OSU Providers list", MAC2STR(sa));
591 wpa_s->num_prov_found++;
592 if (anqp) {
593 wpabuf_free(anqp->hs20_osu_providers_list);
594 anqp->hs20_osu_providers_list =
595 wpabuf_alloc_copy(pos, slen);
596 }
597 break;
598 case HS20_STYPE_ICON_BINARY_FILE:
599 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen,
600 dialog_token);
601 if (wpa_s->fetch_osu_icon_in_progress) {
602 hs20_osu_icon_fetch_result(wpa_s, ret);
603 eloop_cancel_timeout(hs20_continue_icon_fetch,
604 wpa_s, NULL);
605 eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
606 wpa_s, NULL);
607 }
608 break;
609 default:
610 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
611 break;
612 }
613 }
614
615
hs20_notify_parse_done(struct wpa_supplicant * wpa_s)616 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
617 {
618 if (!wpa_s->fetch_osu_icon_in_progress)
619 return;
620 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
621 return;
622 /*
623 * We are going through icon fetch, but no icon response was received.
624 * Assume this means the current AP could not provide an answer to avoid
625 * getting stuck in fetch iteration.
626 */
627 hs20_icon_fetch_failed(wpa_s);
628 }
629
630
hs20_free_osu_prov_entry(struct osu_provider * prov)631 static void hs20_free_osu_prov_entry(struct osu_provider *prov)
632 {
633 }
634
635
hs20_free_osu_prov(struct wpa_supplicant * wpa_s)636 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
637 {
638 size_t i;
639 for (i = 0; i < wpa_s->osu_prov_count; i++)
640 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
641 os_free(wpa_s->osu_prov);
642 wpa_s->osu_prov = NULL;
643 wpa_s->osu_prov_count = 0;
644 }
645
646
hs20_osu_fetch_done(struct wpa_supplicant * wpa_s)647 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
648 {
649 char fname[256];
650 FILE *f;
651 size_t i, j;
652
653 wpa_s->fetch_osu_info = 0;
654 wpa_s->fetch_osu_icon_in_progress = 0;
655
656 if (wpa_s->conf->osu_dir == NULL) {
657 hs20_free_osu_prov(wpa_s);
658 wpa_s->fetch_anqp_in_progress = 0;
659 return;
660 }
661
662 snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
663 wpa_s->conf->osu_dir);
664 f = fopen(fname, "w");
665 if (f == NULL) {
666 hs20_free_osu_prov(wpa_s);
667 wpa_s->fetch_anqp_in_progress = 0;
668 return;
669 }
670
671 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
672
673 for (i = 0; i < wpa_s->osu_prov_count; i++) {
674 struct osu_provider *osu = &wpa_s->osu_prov[i];
675 if (i > 0)
676 fprintf(f, "\n");
677 fprintf(f, "OSU-PROVIDER " MACSTR "\n"
678 "uri=%s\n"
679 "methods=%08x\n",
680 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
681 if (osu->osu_ssid_len) {
682 fprintf(f, "osu_ssid=%s\n",
683 wpa_ssid_txt(osu->osu_ssid,
684 osu->osu_ssid_len));
685 }
686 if (osu->osu_nai[0])
687 fprintf(f, "osu_nai=%s\n", osu->osu_nai);
688 for (j = 0; j < osu->friendly_name_count; j++) {
689 fprintf(f, "friendly_name=%s:%s\n",
690 osu->friendly_name[j].lang,
691 osu->friendly_name[j].text);
692 }
693 for (j = 0; j < osu->serv_desc_count; j++) {
694 fprintf(f, "desc=%s:%s\n",
695 osu->serv_desc[j].lang,
696 osu->serv_desc[j].text);
697 }
698 for (j = 0; j < osu->icon_count; j++) {
699 struct osu_icon *icon = &osu->icon[j];
700 if (icon->failed)
701 continue; /* could not fetch icon */
702 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
703 icon->id, icon->width, icon->height, icon->lang,
704 icon->icon_type, icon->filename);
705 }
706 }
707 fclose(f);
708 hs20_free_osu_prov(wpa_s);
709
710 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
711 wpa_s->fetch_anqp_in_progress = 0;
712 }
713
714
hs20_next_osu_icon(struct wpa_supplicant * wpa_s)715 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
716 {
717 size_t i, j;
718
719 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
720
721 for (i = 0; i < wpa_s->osu_prov_count; i++) {
722 struct osu_provider *osu = &wpa_s->osu_prov[i];
723 for (j = 0; j < osu->icon_count; j++) {
724 struct osu_icon *icon = &osu->icon[j];
725 if (icon->id || icon->failed)
726 continue;
727
728 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
729 "from " MACSTR, icon->filename,
730 MAC2STR(osu->bssid));
731 os_get_reltime(&wpa_s->osu_icon_fetch_start);
732 if (hs20_anqp_send_req(wpa_s, osu->bssid,
733 BIT(HS20_STYPE_ICON_REQUEST),
734 (u8 *) icon->filename,
735 os_strlen(icon->filename),
736 0) < 0) {
737 icon->failed = 1;
738 continue;
739 }
740 return;
741 }
742 }
743
744 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
745 hs20_osu_fetch_done(wpa_s);
746 }
747
748
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)749 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
750 const u8 *osu_ssid, u8 osu_ssid_len,
751 const u8 *pos, size_t len)
752 {
753 struct osu_provider *prov;
754 const u8 *end = pos + len;
755 u16 len2;
756 const u8 *pos2;
757 u8 uri_len, osu_method_len, osu_nai_len;
758
759 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
760 prov = os_realloc_array(wpa_s->osu_prov,
761 wpa_s->osu_prov_count + 1,
762 sizeof(*prov));
763 if (prov == NULL)
764 return;
765 wpa_s->osu_prov = prov;
766 prov = &prov[wpa_s->osu_prov_count];
767 os_memset(prov, 0, sizeof(*prov));
768
769 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
770 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
771 prov->osu_ssid_len = osu_ssid_len;
772
773 /* OSU Friendly Name Length */
774 if (end - pos < 2) {
775 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
776 "Friendly Name Length");
777 return;
778 }
779 len2 = WPA_GET_LE16(pos);
780 pos += 2;
781 if (len2 > end - pos) {
782 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
783 "Friendly Name Duples");
784 return;
785 }
786 pos2 = pos;
787 pos += len2;
788
789 /* OSU Friendly Name Duples */
790 while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) {
791 struct osu_lang_string *f;
792 if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) {
793 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
794 break;
795 }
796 f = &prov->friendly_name[prov->friendly_name_count++];
797 os_memcpy(f->lang, pos2 + 1, 3);
798 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
799 pos2 += 1 + pos2[0];
800 }
801
802 /* OSU Server URI */
803 if (end - pos < 1) {
804 wpa_printf(MSG_DEBUG,
805 "HS 2.0: Not enough room for OSU Server URI length");
806 return;
807 }
808 uri_len = *pos++;
809 if (uri_len > end - pos) {
810 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
811 "URI");
812 return;
813 }
814 os_memcpy(prov->server_uri, pos, uri_len);
815 pos += uri_len;
816
817 /* OSU Method list */
818 if (end - pos < 1) {
819 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
820 "list length");
821 return;
822 }
823 osu_method_len = pos[0];
824 if (osu_method_len > end - pos - 1) {
825 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
826 "list");
827 return;
828 }
829 pos2 = pos + 1;
830 pos += 1 + osu_method_len;
831 while (pos2 < pos) {
832 if (*pos2 < 32)
833 prov->osu_methods |= BIT(*pos2);
834 pos2++;
835 }
836
837 /* Icons Available Length */
838 if (end - pos < 2) {
839 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
840 "Available Length");
841 return;
842 }
843 len2 = WPA_GET_LE16(pos);
844 pos += 2;
845 if (len2 > end - pos) {
846 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
847 "Available");
848 return;
849 }
850 pos2 = pos;
851 pos += len2;
852
853 /* Icons Available */
854 while (pos2 < pos) {
855 struct osu_icon *icon = &prov->icon[prov->icon_count];
856 u8 flen;
857
858 if (2 + 2 + 3 + 1 + 1 > pos - pos2) {
859 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
860 break;
861 }
862
863 icon->width = WPA_GET_LE16(pos2);
864 pos2 += 2;
865 icon->height = WPA_GET_LE16(pos2);
866 pos2 += 2;
867 os_memcpy(icon->lang, pos2, 3);
868 pos2 += 3;
869
870 flen = *pos2++;
871 if (flen > pos - pos2) {
872 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
873 break;
874 }
875 os_memcpy(icon->icon_type, pos2, flen);
876 pos2 += flen;
877
878 if (pos - pos2 < 1) {
879 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
880 "Filename length");
881 break;
882 }
883 flen = *pos2++;
884 if (flen > pos - pos2) {
885 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
886 "Filename");
887 break;
888 }
889 os_memcpy(icon->filename, pos2, flen);
890 pos2 += flen;
891
892 prov->icon_count++;
893 }
894
895 /* OSU_NAI */
896 if (end - pos < 1) {
897 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
898 return;
899 }
900 osu_nai_len = *pos++;
901 if (osu_nai_len > end - pos) {
902 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
903 return;
904 }
905 os_memcpy(prov->osu_nai, pos, osu_nai_len);
906 pos += osu_nai_len;
907
908 /* OSU Service Description Length */
909 if (end - pos < 2) {
910 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
911 "Service Description Length");
912 return;
913 }
914 len2 = WPA_GET_LE16(pos);
915 pos += 2;
916 if (len2 > end - pos) {
917 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
918 "Service Description Duples");
919 return;
920 }
921 pos2 = pos;
922 pos += len2;
923
924 /* OSU Service Description Duples */
925 while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) {
926 struct osu_lang_string *f;
927 u8 descr_len;
928
929 descr_len = *pos2++;
930 if (descr_len > pos - pos2 || descr_len < 3) {
931 wpa_printf(MSG_DEBUG, "Invalid OSU Service "
932 "Description");
933 break;
934 }
935 f = &prov->serv_desc[prov->serv_desc_count++];
936 os_memcpy(f->lang, pos2, 3);
937 os_memcpy(f->text, pos2 + 3, descr_len - 3);
938 pos2 += descr_len;
939 }
940
941 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
942 MAC2STR(bss->bssid));
943 wpa_s->osu_prov_count++;
944 }
945
946
hs20_osu_icon_fetch(struct wpa_supplicant * wpa_s)947 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
948 {
949 struct wpa_bss *bss;
950 struct wpabuf *prov_anqp;
951 const u8 *pos, *end;
952 u16 len;
953 const u8 *osu_ssid;
954 u8 osu_ssid_len;
955 u8 num_providers;
956
957 hs20_free_osu_prov(wpa_s);
958
959 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
960 if (bss->anqp == NULL)
961 continue;
962 prov_anqp = bss->anqp->hs20_osu_providers_list;
963 if (prov_anqp == NULL)
964 continue;
965 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
966 MACSTR, MAC2STR(bss->bssid));
967 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
968 prov_anqp);
969 pos = wpabuf_head(prov_anqp);
970 end = pos + wpabuf_len(prov_anqp);
971
972 /* OSU SSID */
973 if (end - pos < 1)
974 continue;
975 if (1 + pos[0] > end - pos) {
976 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
977 "OSU SSID");
978 continue;
979 }
980 osu_ssid_len = *pos++;
981 if (osu_ssid_len > SSID_MAX_LEN) {
982 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
983 "Length %u", osu_ssid_len);
984 continue;
985 }
986 osu_ssid = pos;
987 pos += osu_ssid_len;
988
989 if (end - pos < 1) {
990 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
991 "Number of OSU Providers");
992 continue;
993 }
994 num_providers = *pos++;
995 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
996 num_providers);
997
998 /* OSU Providers */
999 while (end - pos > 2 && num_providers > 0) {
1000 num_providers--;
1001 len = WPA_GET_LE16(pos);
1002 pos += 2;
1003 if (len > (unsigned int) (end - pos))
1004 break;
1005 hs20_osu_add_prov(wpa_s, bss, osu_ssid,
1006 osu_ssid_len, pos, len);
1007 pos += len;
1008 }
1009
1010 if (pos != end) {
1011 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
1012 "extra data after OSU Providers",
1013 (int) (end - pos));
1014 }
1015 }
1016
1017 wpa_s->fetch_osu_icon_in_progress = 1;
1018 hs20_next_osu_icon(wpa_s);
1019 }
1020
1021
hs20_osu_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)1022 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
1023 struct wpa_scan_results *scan_res)
1024 {
1025 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
1026 if (!wpa_s->fetch_osu_waiting_scan) {
1027 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
1028 return;
1029 }
1030 wpa_s->network_select = 0;
1031 wpa_s->fetch_all_anqp = 1;
1032 wpa_s->fetch_osu_info = 1;
1033 wpa_s->fetch_osu_icon_in_progress = 0;
1034
1035 interworking_start_fetch_anqp(wpa_s);
1036 }
1037
1038
hs20_fetch_osu(struct wpa_supplicant * wpa_s)1039 int hs20_fetch_osu(struct wpa_supplicant *wpa_s)
1040 {
1041 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1042 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1043 "interface disabled");
1044 return -1;
1045 }
1046
1047 if (wpa_s->scanning) {
1048 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1049 "scanning");
1050 return -1;
1051 }
1052
1053 if (wpa_s->conf->osu_dir == NULL) {
1054 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1055 "osu_dir not configured");
1056 return -1;
1057 }
1058
1059 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
1060 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1061 "fetch in progress (%d, %d)",
1062 wpa_s->fetch_anqp_in_progress,
1063 wpa_s->network_select);
1064 return -1;
1065 }
1066
1067 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
1068 wpa_s->num_osu_scans = 0;
1069 wpa_s->num_prov_found = 0;
1070 hs20_start_osu_scan(wpa_s);
1071
1072 return 0;
1073 }
1074
1075
hs20_start_osu_scan(struct wpa_supplicant * wpa_s)1076 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
1077 {
1078 wpa_s->fetch_osu_waiting_scan = 1;
1079 wpa_s->num_osu_scans++;
1080 wpa_s->scan_req = MANUAL_SCAN_REQ;
1081 wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
1082 wpa_supplicant_req_scan(wpa_s, 0, 0);
1083 }
1084
1085
hs20_cancel_fetch_osu(struct wpa_supplicant * wpa_s)1086 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
1087 {
1088 wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
1089 interworking_stop_fetch_anqp(wpa_s);
1090 wpa_s->fetch_osu_waiting_scan = 0;
1091 wpa_s->network_select = 0;
1092 wpa_s->fetch_osu_info = 0;
1093 wpa_s->fetch_osu_icon_in_progress = 0;
1094 }
1095
1096
hs20_icon_fetch_failed(struct wpa_supplicant * wpa_s)1097 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
1098 {
1099 hs20_osu_icon_fetch_result(wpa_s, -1);
1100 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1101 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
1102 }
1103
1104
hs20_rx_subscription_remediation(struct wpa_supplicant * wpa_s,const char * url,u8 osu_method)1105 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
1106 const char *url, u8 osu_method)
1107 {
1108 if (url)
1109 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
1110 osu_method, url);
1111 else
1112 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
1113 }
1114
1115
hs20_rx_deauth_imminent_notice(struct wpa_supplicant * wpa_s,u8 code,u16 reauth_delay,const char * url)1116 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
1117 u16 reauth_delay, const char *url)
1118 {
1119 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
1120 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
1121 return;
1122 }
1123
1124 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
1125 code, reauth_delay, url);
1126
1127 if (code == HS20_DEAUTH_REASON_CODE_BSS) {
1128 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
1129 wpa_blacklist_add(wpa_s, wpa_s->bssid);
1130 /* TODO: For now, disable full ESS since some drivers may not
1131 * support disabling per BSS. */
1132 if (wpa_s->current_ssid) {
1133 struct os_reltime now;
1134 os_get_reltime(&now);
1135 if (now.sec + reauth_delay <=
1136 wpa_s->current_ssid->disabled_until.sec)
1137 return;
1138 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
1139 reauth_delay);
1140 wpa_s->current_ssid->disabled_until.sec =
1141 now.sec + reauth_delay;
1142 }
1143 }
1144
1145 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
1146 struct os_reltime now;
1147 os_get_reltime(&now);
1148 if (now.sec + reauth_delay <=
1149 wpa_s->current_ssid->disabled_until.sec)
1150 return;
1151 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
1152 reauth_delay);
1153 wpa_s->current_ssid->disabled_until.sec =
1154 now.sec + reauth_delay;
1155 }
1156 }
1157
1158
hs20_init(struct wpa_supplicant * wpa_s)1159 void hs20_init(struct wpa_supplicant *wpa_s)
1160 {
1161 dl_list_init(&wpa_s->icon_head);
1162 }
1163
1164
hs20_deinit(struct wpa_supplicant * wpa_s)1165 void hs20_deinit(struct wpa_supplicant *wpa_s)
1166 {
1167 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1168 hs20_free_osu_prov(wpa_s);
1169 if (wpa_s->icon_head.next)
1170 hs20_del_icon(wpa_s, NULL, NULL);
1171 }
1172