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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 "notify.h"
24 #include "bss.h"
25 #include "blacklist.h"
26 #include "gas_query.h"
27 #include "interworking.h"
28 #include "hs20_supplicant.h"
29 #include "base64.h"
30 
31 
32 #define OSU_MAX_ITEMS 10
33 
34 struct osu_lang_string {
35 	char lang[4];
36 	char text[253];
37 };
38 
39 struct osu_icon {
40 	u16 width;
41 	u16 height;
42 	char lang[4];
43 	char icon_type[256];
44 	char filename[256];
45 	unsigned int id;
46 	unsigned int failed:1;
47 };
48 
49 struct osu_provider {
50 	u8 bssid[ETH_ALEN];
51 	u8 osu_ssid[SSID_MAX_LEN];
52 	u8 osu_ssid_len;
53 	char server_uri[256];
54 	u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
55 	char osu_nai[256];
56 	struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
57 	size_t friendly_name_count;
58 	struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
59 	size_t serv_desc_count;
60 	struct osu_icon icon[OSU_MAX_ITEMS];
61 	size_t icon_count;
62 };
63 
64 
hs20_configure_frame_filters(struct wpa_supplicant * wpa_s)65 void hs20_configure_frame_filters(struct wpa_supplicant *wpa_s)
66 {
67 	struct wpa_bss *bss = wpa_s->current_bss;
68 	u8 *bssid = wpa_s->bssid;
69 	const u8 *ie;
70 	const u8 *ext_capa;
71 	u32 filter = 0;
72 
73 	if (!bss || !is_hs20_network(wpa_s, wpa_s->current_ssid, bss)) {
74 		wpa_printf(MSG_DEBUG,
75 			   "Not configuring frame filtering - BSS " MACSTR
76 			   " is not a Hotspot 2.0 network", MAC2STR(bssid));
77 		return;
78 	}
79 
80 	ie = wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE);
81 
82 	/* Check if DGAF disabled bit is zero (5th byte in the IE) */
83 	if (!ie || ie[1] < 5)
84 		wpa_printf(MSG_DEBUG,
85 			   "Not configuring frame filtering - Can't extract DGAF bit");
86 	else if (!(ie[6] & HS20_DGAF_DISABLED))
87 		filter |= WPA_DATA_FRAME_FILTER_FLAG_GTK;
88 
89 	ext_capa = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
90 	if (!ext_capa || ext_capa[1] < 2) {
91 		wpa_printf(MSG_DEBUG,
92 			   "Not configuring frame filtering - Can't extract Proxy ARP bit");
93 		return;
94 	}
95 
96 	/* Check if Proxy ARP is enabled (2nd byte in the IE) */
97 	if (ext_capa[3] & BIT(4))
98 		filter |= WPA_DATA_FRAME_FILTER_FLAG_ARP |
99 			WPA_DATA_FRAME_FILTER_FLAG_NA;
100 
101 	wpa_drv_configure_frame_filters(wpa_s, filter);
102 }
103 
104 
wpas_hs20_add_indication(struct wpabuf * buf,int pps_mo_id)105 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
106 {
107 	u8 conf;
108 
109 	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
110 	wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
111 	wpabuf_put_be24(buf, OUI_WFA);
112 	wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
113 	conf = HS20_VERSION;
114 	if (pps_mo_id >= 0)
115 		conf |= HS20_PPS_MO_ID_PRESENT;
116 	wpabuf_put_u8(buf, conf);
117 	if (pps_mo_id >= 0)
118 		wpabuf_put_le16(buf, pps_mo_id);
119 }
120 
121 
is_hs20_network(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)122 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
123 		    struct wpa_bss *bss)
124 {
125 	if (!wpa_s->conf->hs20 || !ssid)
126 		return 0;
127 
128 	if (ssid->parent_cred)
129 		return 1;
130 
131 	if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE))
132 		return 0;
133 
134 	/*
135 	 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that
136 	 * than cause Hotspot 2.0 connections without indication element getting
137 	 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element.
138 	 */
139 
140 	if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X))
141 		return 0;
142 	if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP))
143 		return 0;
144 	if (ssid->proto != WPA_PROTO_RSN)
145 		return 0;
146 
147 	return 1;
148 }
149 
150 
hs20_get_pps_mo_id(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)151 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
152 {
153 	struct wpa_cred *cred;
154 
155 	if (ssid == NULL)
156 		return 0;
157 
158 	if (ssid->update_identifier)
159 		return ssid->update_identifier;
160 
161 	if (ssid->parent_cred == NULL)
162 		return 0;
163 
164 	for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
165 		if (ssid->parent_cred == cred)
166 			return cred->update_identifier;
167 	}
168 
169 	return 0;
170 }
171 
172 
hs20_put_anqp_req(u32 stypes,const u8 * payload,size_t payload_len,struct wpabuf * buf)173 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
174 		       struct wpabuf *buf)
175 {
176 	u8 *len_pos;
177 
178 	if (buf == NULL)
179 		return;
180 
181 	len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
182 	wpabuf_put_be24(buf, OUI_WFA);
183 	wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
184 	if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
185 		wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
186 		wpabuf_put_u8(buf, 0); /* Reserved */
187 		if (payload)
188 			wpabuf_put_data(buf, payload, payload_len);
189 	} else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
190 		wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
191 		wpabuf_put_u8(buf, 0); /* Reserved */
192 		if (payload)
193 			wpabuf_put_data(buf, payload, payload_len);
194 	} else {
195 		u8 i;
196 		wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
197 		wpabuf_put_u8(buf, 0); /* Reserved */
198 		for (i = 0; i < 32; i++) {
199 			if (stypes & BIT(i))
200 				wpabuf_put_u8(buf, i);
201 		}
202 	}
203 	gas_anqp_set_element_len(buf, len_pos);
204 
205 	gas_anqp_set_len(buf);
206 }
207 
208 
hs20_build_anqp_req(u32 stypes,const u8 * payload,size_t payload_len)209 static struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
210 					   size_t payload_len)
211 {
212 	struct wpabuf *buf;
213 
214 	buf = gas_anqp_build_initial_req(0, 100 + payload_len);
215 	if (buf == NULL)
216 		return NULL;
217 
218 	hs20_put_anqp_req(stypes, payload, payload_len, buf);
219 
220 	return buf;
221 }
222 
223 
hs20_anqp_send_req(struct wpa_supplicant * wpa_s,const u8 * dst,u32 stypes,const u8 * payload,size_t payload_len,int inmem)224 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
225 		       const u8 *payload, size_t payload_len, int inmem)
226 {
227 	struct wpabuf *buf;
228 	int ret = 0;
229 	int freq;
230 	struct wpa_bss *bss;
231 	int res;
232 	struct icon_entry *icon_entry;
233 
234 	bss = wpa_bss_get_bssid(wpa_s, dst);
235 	if (!bss) {
236 		wpa_printf(MSG_WARNING,
237 			   "ANQP: Cannot send query to unknown BSS "
238 			   MACSTR, MAC2STR(dst));
239 		return -1;
240 	}
241 
242 	wpa_bss_anqp_unshare_alloc(bss);
243 	freq = bss->freq;
244 
245 	wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
246 		   "subtypes 0x%x", MAC2STR(dst), stypes);
247 
248 	buf = hs20_build_anqp_req(stypes, payload, payload_len);
249 	if (buf == NULL)
250 		return -1;
251 
252 	res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
253 	if (res < 0) {
254 		wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
255 		wpabuf_free(buf);
256 		return -1;
257 	} else
258 		wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
259 			   "%u", res);
260 
261 	if (inmem) {
262 		icon_entry = os_zalloc(sizeof(struct icon_entry));
263 		if (!icon_entry)
264 			return -1;
265 		os_memcpy(icon_entry->bssid, dst, ETH_ALEN);
266 		icon_entry->file_name = os_malloc(payload_len + 1);
267 		if (!icon_entry->file_name) {
268 			os_free(icon_entry);
269 			return -1;
270 		}
271 		os_memcpy(icon_entry->file_name, payload, payload_len);
272 		icon_entry->file_name[payload_len] = '\0';
273 		icon_entry->dialog_token = res;
274 
275 		dl_list_add(&wpa_s->icon_head, &icon_entry->list);
276 	}
277 
278 	return ret;
279 }
280 
281 
hs20_find_icon(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * file_name)282 static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s,
283 					  const u8 *bssid,
284 					  const char *file_name)
285 {
286 	struct icon_entry *icon;
287 
288 	dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
289 		if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 &&
290 		    os_strcmp(icon->file_name, file_name) == 0 && icon->image)
291 			return icon;
292 	}
293 
294 	return NULL;
295 }
296 
297 
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)298 int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
299 		  const char *file_name, size_t offset, size_t size,
300 		  char *reply, size_t buf_len)
301 {
302 	struct icon_entry *icon;
303 	size_t out_size;
304 	unsigned char *b64;
305 	size_t b64_size;
306 	int reply_size;
307 
308 	wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)",
309 		   MAC2STR(bssid), file_name, (unsigned int) offset,
310 		   (unsigned int) size, (unsigned int) buf_len);
311 
312 	icon = hs20_find_icon(wpa_s, bssid, file_name);
313 	if (!icon || !icon->image || offset >= icon->image_len)
314 		return -1;
315 	if (size > icon->image_len - offset)
316 		size = icon->image_len - offset;
317 	out_size = buf_len - 3 /* max base64 padding */;
318 	if (size * 4 > out_size * 3)
319 		size = out_size * 3 / 4;
320 	if (size == 0)
321 		return -1;
322 
323 	b64 = base64_encode(&icon->image[offset], size, &b64_size);
324 	if (b64 && buf_len >= b64_size) {
325 		os_memcpy(reply, b64, b64_size);
326 		reply_size = b64_size;
327 	} else {
328 		reply_size = -1;
329 	}
330 	os_free(b64);
331 	return reply_size;
332 }
333 
334 
hs20_free_icon_entry(struct icon_entry * icon)335 static void hs20_free_icon_entry(struct icon_entry *icon)
336 {
337 	wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR
338 		   " dialog_token=%u file_name=%s image_len=%u",
339 		   MAC2STR(icon->bssid), icon->dialog_token,
340 		   icon->file_name ? icon->file_name : "N/A",
341 		   (unsigned int) icon->image_len);
342 	os_free(icon->file_name);
343 	os_free(icon->image);
344 	os_free(icon);
345 }
346 
347 
hs20_del_icon(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * file_name)348 int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
349 		  const char *file_name)
350 {
351 	struct icon_entry *icon, *tmp;
352 	int count = 0;
353 
354 	if (!bssid)
355 		wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons");
356 	else if (!file_name)
357 		wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for "
358 			   MACSTR, MAC2STR(bssid));
359 	else
360 		wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for "
361 			   MACSTR " file name %s", MAC2STR(bssid), file_name);
362 
363 	dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
364 			      list) {
365 		if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) &&
366 		    (!file_name ||
367 		     os_strcmp(icon->file_name, file_name) == 0)) {
368 			dl_list_del(&icon->list);
369 			hs20_free_icon_entry(icon);
370 			count++;
371 		}
372 	}
373 	return count == 0 ? -1 : 0;
374 }
375 
376 
hs20_set_osu_access_permission(const char * osu_dir,const char * fname)377 static void hs20_set_osu_access_permission(const char *osu_dir,
378 					   const char *fname)
379 {
380 	struct stat statbuf;
381 
382 	/* Get OSU directory information */
383 	if (stat(osu_dir, &statbuf) < 0) {
384 		wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
385 			   osu_dir);
386 		return;
387 	}
388 
389 	if (chmod(fname, statbuf.st_mode) < 0) {
390 		wpa_printf(MSG_WARNING,
391 			   "Cannot change the permissions for %s", fname);
392 		return;
393 	}
394 
395 	if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
396 		wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
397 			   fname);
398 	}
399 }
400 
401 
hs20_remove_duplicate_icons(struct wpa_supplicant * wpa_s,struct icon_entry * new_icon)402 static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s,
403 					struct icon_entry *new_icon)
404 {
405 	struct icon_entry *icon, *tmp;
406 
407 	dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
408 			      list) {
409 		if (icon == new_icon)
410 			continue;
411 		if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 &&
412 		    os_strcmp(icon->file_name, new_icon->file_name) == 0) {
413 			dl_list_del(&icon->list);
414 			hs20_free_icon_entry(icon);
415 		}
416 	}
417 }
418 
419 
hs20_process_icon_binary_file(struct wpa_supplicant * wpa_s,const u8 * sa,const u8 * pos,size_t slen,u8 dialog_token)420 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
421 					 const u8 *sa, const u8 *pos,
422 					 size_t slen, u8 dialog_token)
423 {
424 	char fname[256];
425 	int png;
426 	FILE *f;
427 	u16 data_len;
428 	struct icon_entry *icon;
429 
430 	dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
431 		if (icon->dialog_token == dialog_token && !icon->image &&
432 		    os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) {
433 			icon->image = os_malloc(slen);
434 			if (!icon->image)
435 				return -1;
436 			os_memcpy(icon->image, pos, slen);
437 			icon->image_len = slen;
438 			hs20_remove_duplicate_icons(wpa_s, icon);
439 			wpa_msg(wpa_s, MSG_INFO,
440 				RX_HS20_ICON MACSTR " %s %u",
441 				MAC2STR(sa), icon->file_name,
442 				(unsigned int) icon->image_len);
443 			wpas_notify_hs20_icon_query_done(wpa_s, sa,
444 							 icon->file_name,
445 							 icon->image,
446 							 icon->image_len);
447 			return 0;
448 		}
449 	}
450 
451 	wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR " Icon Binary File",
452 		MAC2STR(sa));
453 
454 	if (slen < 4) {
455 		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
456 			"value from " MACSTR, MAC2STR(sa));
457 		return -1;
458 	}
459 
460 	wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
461 	if (*pos != 0)
462 		return -1;
463 	pos++;
464 	slen--;
465 
466 	if ((size_t) 1 + pos[0] > slen) {
467 		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
468 			"value from " MACSTR, MAC2STR(sa));
469 		return -1;
470 	}
471 	wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
472 	png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
473 	slen -= 1 + pos[0];
474 	pos += 1 + pos[0];
475 
476 	if (slen < 2) {
477 		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
478 			"value from " MACSTR, MAC2STR(sa));
479 		return -1;
480 	}
481 	data_len = WPA_GET_LE16(pos);
482 	pos += 2;
483 	slen -= 2;
484 
485 	if (data_len > slen) {
486 		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
487 			"value from " MACSTR, MAC2STR(sa));
488 		return -1;
489 	}
490 
491 	wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
492 	if (wpa_s->conf->osu_dir == NULL)
493 		return -1;
494 
495 	wpa_s->osu_icon_id++;
496 	if (wpa_s->osu_icon_id == 0)
497 		wpa_s->osu_icon_id++;
498 	snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
499 		 wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
500 		 png ? "png" : "icon");
501 	f = fopen(fname, "wb");
502 	if (f == NULL)
503 		return -1;
504 
505 	hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
506 
507 	if (fwrite(pos, slen, 1, f) != 1) {
508 		fclose(f);
509 		unlink(fname);
510 		return -1;
511 	}
512 	fclose(f);
513 
514 	wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP_ICON "%s", fname);
515 	return 0;
516 }
517 
518 
hs20_continue_icon_fetch(void * eloop_ctx,void * sock_ctx)519 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
520 {
521 	struct wpa_supplicant *wpa_s = eloop_ctx;
522 	if (wpa_s->fetch_osu_icon_in_progress)
523 		hs20_next_osu_icon(wpa_s);
524 }
525 
526 
hs20_osu_icon_fetch_result(struct wpa_supplicant * wpa_s,int res)527 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
528 {
529 	size_t i, j;
530 	struct os_reltime now, tmp;
531 	int dur;
532 
533 	os_get_reltime(&now);
534 	os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
535 	dur = tmp.sec * 1000 + tmp.usec / 1000;
536 	wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
537 		   dur, res);
538 
539 	for (i = 0; i < wpa_s->osu_prov_count; i++) {
540 		struct osu_provider *osu = &wpa_s->osu_prov[i];
541 		for (j = 0; j < osu->icon_count; j++) {
542 			struct osu_icon *icon = &osu->icon[j];
543 			if (icon->id || icon->failed)
544 				continue;
545 			if (res < 0)
546 				icon->failed = 1;
547 			else
548 				icon->id = wpa_s->osu_icon_id;
549 			return;
550 		}
551 	}
552 }
553 
554 
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)555 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
556 				  struct wpa_bss *bss, const u8 *sa,
557 				  const u8 *data, size_t slen, u8 dialog_token)
558 {
559 	const u8 *pos = data;
560 	u8 subtype;
561 	struct wpa_bss_anqp *anqp = NULL;
562 	int ret;
563 
564 	if (slen < 2)
565 		return;
566 
567 	if (bss)
568 		anqp = bss->anqp;
569 
570 	subtype = *pos++;
571 	slen--;
572 
573 	pos++; /* Reserved */
574 	slen--;
575 
576 	switch (subtype) {
577 	case HS20_STYPE_CAPABILITY_LIST:
578 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
579 			" HS Capability List", MAC2STR(sa));
580 		wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
581 		if (anqp) {
582 			wpabuf_free(anqp->hs20_capability_list);
583 			anqp->hs20_capability_list =
584 				wpabuf_alloc_copy(pos, slen);
585 		}
586 		break;
587 	case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
588 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
589 			" Operator Friendly Name", MAC2STR(sa));
590 		wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
591 		if (anqp) {
592 			wpabuf_free(anqp->hs20_operator_friendly_name);
593 			anqp->hs20_operator_friendly_name =
594 				wpabuf_alloc_copy(pos, slen);
595 		}
596 		break;
597 	case HS20_STYPE_WAN_METRICS:
598 		wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen);
599 		if (slen < 13) {
600 			wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN "
601 				"Metrics value from " MACSTR, MAC2STR(sa));
602 			break;
603 		}
604 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
605 			" WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa),
606 			pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5),
607 			pos[9], pos[10], WPA_GET_LE16(pos + 11));
608 		if (anqp) {
609 			wpabuf_free(anqp->hs20_wan_metrics);
610 			anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
611 		}
612 		break;
613 	case HS20_STYPE_CONNECTION_CAPABILITY:
614 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
615 			" Connection Capability", MAC2STR(sa));
616 		wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
617 		if (anqp) {
618 			wpabuf_free(anqp->hs20_connection_capability);
619 			anqp->hs20_connection_capability =
620 				wpabuf_alloc_copy(pos, slen);
621 		}
622 		break;
623 	case HS20_STYPE_OPERATING_CLASS:
624 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
625 			" Operating Class", MAC2STR(sa));
626 		wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
627 		if (anqp) {
628 			wpabuf_free(anqp->hs20_operating_class);
629 			anqp->hs20_operating_class =
630 				wpabuf_alloc_copy(pos, slen);
631 		}
632 		break;
633 	case HS20_STYPE_OSU_PROVIDERS_LIST:
634 		wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
635 			" OSU Providers list", MAC2STR(sa));
636 		wpa_s->num_prov_found++;
637 		if (anqp) {
638 			wpabuf_free(anqp->hs20_osu_providers_list);
639 			anqp->hs20_osu_providers_list =
640 				wpabuf_alloc_copy(pos, slen);
641 		}
642 		break;
643 	case HS20_STYPE_ICON_BINARY_FILE:
644 		ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen,
645 						    dialog_token);
646 		if (wpa_s->fetch_osu_icon_in_progress) {
647 			hs20_osu_icon_fetch_result(wpa_s, ret);
648 			eloop_cancel_timeout(hs20_continue_icon_fetch,
649 					     wpa_s, NULL);
650 			eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
651 					       wpa_s, NULL);
652 		}
653 		break;
654 	default:
655 		wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
656 		break;
657 	}
658 }
659 
660 
hs20_notify_parse_done(struct wpa_supplicant * wpa_s)661 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
662 {
663 	if (!wpa_s->fetch_osu_icon_in_progress)
664 		return;
665 	if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
666 		return;
667 	/*
668 	 * We are going through icon fetch, but no icon response was received.
669 	 * Assume this means the current AP could not provide an answer to avoid
670 	 * getting stuck in fetch iteration.
671 	 */
672 	hs20_icon_fetch_failed(wpa_s);
673 }
674 
675 
hs20_free_osu_prov_entry(struct osu_provider * prov)676 static void hs20_free_osu_prov_entry(struct osu_provider *prov)
677 {
678 }
679 
680 
hs20_free_osu_prov(struct wpa_supplicant * wpa_s)681 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
682 {
683 	size_t i;
684 	for (i = 0; i < wpa_s->osu_prov_count; i++)
685 		hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
686 	os_free(wpa_s->osu_prov);
687 	wpa_s->osu_prov = NULL;
688 	wpa_s->osu_prov_count = 0;
689 }
690 
691 
hs20_osu_fetch_done(struct wpa_supplicant * wpa_s)692 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
693 {
694 	char fname[256];
695 	FILE *f;
696 	size_t i, j;
697 
698 	wpa_s->fetch_osu_info = 0;
699 	wpa_s->fetch_osu_icon_in_progress = 0;
700 
701 	if (wpa_s->conf->osu_dir == NULL) {
702 		hs20_free_osu_prov(wpa_s);
703 		wpa_s->fetch_anqp_in_progress = 0;
704 		return;
705 	}
706 
707 	snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
708 		 wpa_s->conf->osu_dir);
709 	f = fopen(fname, "w");
710 	if (f == NULL) {
711 		wpa_msg(wpa_s, MSG_INFO,
712 			"Could not write OSU provider information");
713 		hs20_free_osu_prov(wpa_s);
714 		wpa_s->fetch_anqp_in_progress = 0;
715 		return;
716 	}
717 
718 	hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
719 
720 	for (i = 0; i < wpa_s->osu_prov_count; i++) {
721 		struct osu_provider *osu = &wpa_s->osu_prov[i];
722 		if (i > 0)
723 			fprintf(f, "\n");
724 		fprintf(f, "OSU-PROVIDER " MACSTR "\n"
725 			"uri=%s\n"
726 			"methods=%08x\n",
727 			MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
728 		if (osu->osu_ssid_len) {
729 			fprintf(f, "osu_ssid=%s\n",
730 				wpa_ssid_txt(osu->osu_ssid,
731 					     osu->osu_ssid_len));
732 		}
733 		if (osu->osu_nai[0])
734 			fprintf(f, "osu_nai=%s\n", osu->osu_nai);
735 		for (j = 0; j < osu->friendly_name_count; j++) {
736 			fprintf(f, "friendly_name=%s:%s\n",
737 				osu->friendly_name[j].lang,
738 				osu->friendly_name[j].text);
739 		}
740 		for (j = 0; j < osu->serv_desc_count; j++) {
741 			fprintf(f, "desc=%s:%s\n",
742 				osu->serv_desc[j].lang,
743 				osu->serv_desc[j].text);
744 		}
745 		for (j = 0; j < osu->icon_count; j++) {
746 			struct osu_icon *icon = &osu->icon[j];
747 			if (icon->failed)
748 				continue; /* could not fetch icon */
749 			fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
750 				icon->id, icon->width, icon->height, icon->lang,
751 				icon->icon_type, icon->filename);
752 		}
753 	}
754 	fclose(f);
755 	hs20_free_osu_prov(wpa_s);
756 
757 	wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
758 	wpa_s->fetch_anqp_in_progress = 0;
759 }
760 
761 
hs20_next_osu_icon(struct wpa_supplicant * wpa_s)762 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
763 {
764 	size_t i, j;
765 
766 	wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
767 
768 	for (i = 0; i < wpa_s->osu_prov_count; i++) {
769 		struct osu_provider *osu = &wpa_s->osu_prov[i];
770 		for (j = 0; j < osu->icon_count; j++) {
771 			struct osu_icon *icon = &osu->icon[j];
772 			if (icon->id || icon->failed)
773 				continue;
774 
775 			wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
776 				   "from " MACSTR, icon->filename,
777 				   MAC2STR(osu->bssid));
778 			os_get_reltime(&wpa_s->osu_icon_fetch_start);
779 			if (hs20_anqp_send_req(wpa_s, osu->bssid,
780 					       BIT(HS20_STYPE_ICON_REQUEST),
781 					       (u8 *) icon->filename,
782 					       os_strlen(icon->filename),
783 					       0) < 0) {
784 				icon->failed = 1;
785 				continue;
786 			}
787 			return;
788 		}
789 	}
790 
791 	wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
792 	hs20_osu_fetch_done(wpa_s);
793 }
794 
795 
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)796 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
797 			      const u8 *osu_ssid, u8 osu_ssid_len,
798 			      const u8 *pos, size_t len)
799 {
800 	struct osu_provider *prov;
801 	const u8 *end = pos + len;
802 	u16 len2;
803 	const u8 *pos2;
804 	u8 uri_len, osu_method_len, osu_nai_len;
805 
806 	wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
807 	prov = os_realloc_array(wpa_s->osu_prov,
808 				wpa_s->osu_prov_count + 1,
809 				sizeof(*prov));
810 	if (prov == NULL)
811 		return;
812 	wpa_s->osu_prov = prov;
813 	prov = &prov[wpa_s->osu_prov_count];
814 	os_memset(prov, 0, sizeof(*prov));
815 
816 	os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
817 	os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
818 	prov->osu_ssid_len = osu_ssid_len;
819 
820 	/* OSU Friendly Name Length */
821 	if (end - pos < 2) {
822 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
823 			   "Friendly Name Length");
824 		return;
825 	}
826 	len2 = WPA_GET_LE16(pos);
827 	pos += 2;
828 	if (len2 > end - pos) {
829 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
830 			   "Friendly Name Duples");
831 		return;
832 	}
833 	pos2 = pos;
834 	pos += len2;
835 
836 	/* OSU Friendly Name Duples */
837 	while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) {
838 		struct osu_lang_string *f;
839 		if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) {
840 			wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
841 			break;
842 		}
843 		f = &prov->friendly_name[prov->friendly_name_count++];
844 		os_memcpy(f->lang, pos2 + 1, 3);
845 		os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
846 		pos2 += 1 + pos2[0];
847 	}
848 
849 	/* OSU Server URI */
850 	if (end - pos < 1) {
851 		wpa_printf(MSG_DEBUG,
852 			   "HS 2.0: Not enough room for OSU Server URI length");
853 		return;
854 	}
855 	uri_len = *pos++;
856 	if (uri_len > end - pos) {
857 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
858 			   "URI");
859 		return;
860 	}
861 	os_memcpy(prov->server_uri, pos, uri_len);
862 	pos += uri_len;
863 
864 	/* OSU Method list */
865 	if (end - pos < 1) {
866 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
867 			   "list length");
868 		return;
869 	}
870 	osu_method_len = pos[0];
871 	if (osu_method_len > end - pos - 1) {
872 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
873 			   "list");
874 		return;
875 	}
876 	pos2 = pos + 1;
877 	pos += 1 + osu_method_len;
878 	while (pos2 < pos) {
879 		if (*pos2 < 32)
880 			prov->osu_methods |= BIT(*pos2);
881 		pos2++;
882 	}
883 
884 	/* Icons Available Length */
885 	if (end - pos < 2) {
886 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
887 			   "Available Length");
888 		return;
889 	}
890 	len2 = WPA_GET_LE16(pos);
891 	pos += 2;
892 	if (len2 > end - pos) {
893 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
894 			   "Available");
895 		return;
896 	}
897 	pos2 = pos;
898 	pos += len2;
899 
900 	/* Icons Available */
901 	while (pos2 < pos) {
902 		struct osu_icon *icon = &prov->icon[prov->icon_count];
903 		u8 flen;
904 
905 		if (2 + 2 + 3 + 1 + 1 > pos - pos2) {
906 			wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
907 			break;
908 		}
909 
910 		icon->width = WPA_GET_LE16(pos2);
911 		pos2 += 2;
912 		icon->height = WPA_GET_LE16(pos2);
913 		pos2 += 2;
914 		os_memcpy(icon->lang, pos2, 3);
915 		pos2 += 3;
916 
917 		flen = *pos2++;
918 		if (flen > pos - pos2) {
919 			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
920 			break;
921 		}
922 		os_memcpy(icon->icon_type, pos2, flen);
923 		pos2 += flen;
924 
925 		if (pos - pos2 < 1) {
926 			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
927 				   "Filename length");
928 			break;
929 		}
930 		flen = *pos2++;
931 		if (flen > pos - pos2) {
932 			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
933 				   "Filename");
934 			break;
935 		}
936 		os_memcpy(icon->filename, pos2, flen);
937 		pos2 += flen;
938 
939 		prov->icon_count++;
940 	}
941 
942 	/* OSU_NAI */
943 	if (end - pos < 1) {
944 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
945 		return;
946 	}
947 	osu_nai_len = *pos++;
948 	if (osu_nai_len > end - pos) {
949 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
950 		return;
951 	}
952 	os_memcpy(prov->osu_nai, pos, osu_nai_len);
953 	pos += osu_nai_len;
954 
955 	/* OSU Service Description Length */
956 	if (end - pos < 2) {
957 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
958 			   "Service Description Length");
959 		return;
960 	}
961 	len2 = WPA_GET_LE16(pos);
962 	pos += 2;
963 	if (len2 > end - pos) {
964 		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
965 			   "Service Description Duples");
966 		return;
967 	}
968 	pos2 = pos;
969 	pos += len2;
970 
971 	/* OSU Service Description Duples */
972 	while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) {
973 		struct osu_lang_string *f;
974 		u8 descr_len;
975 
976 		descr_len = *pos2++;
977 		if (descr_len > pos - pos2 || descr_len < 3) {
978 			wpa_printf(MSG_DEBUG, "Invalid OSU Service "
979 				   "Description");
980 			break;
981 		}
982 		f = &prov->serv_desc[prov->serv_desc_count++];
983 		os_memcpy(f->lang, pos2, 3);
984 		os_memcpy(f->text, pos2 + 3, descr_len - 3);
985 		pos2 += descr_len;
986 	}
987 
988 	wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
989 		   MAC2STR(bss->bssid));
990 	wpa_s->osu_prov_count++;
991 }
992 
993 
hs20_osu_icon_fetch(struct wpa_supplicant * wpa_s)994 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
995 {
996 	struct wpa_bss *bss;
997 	struct wpabuf *prov_anqp;
998 	const u8 *pos, *end;
999 	u16 len;
1000 	const u8 *osu_ssid;
1001 	u8 osu_ssid_len;
1002 	u8 num_providers;
1003 
1004 	hs20_free_osu_prov(wpa_s);
1005 
1006 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1007 		if (bss->anqp == NULL)
1008 			continue;
1009 		prov_anqp = bss->anqp->hs20_osu_providers_list;
1010 		if (prov_anqp == NULL)
1011 			continue;
1012 		wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
1013 			   MACSTR, MAC2STR(bss->bssid));
1014 		wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
1015 				prov_anqp);
1016 		pos = wpabuf_head(prov_anqp);
1017 		end = pos + wpabuf_len(prov_anqp);
1018 
1019 		/* OSU SSID */
1020 		if (end - pos < 1)
1021 			continue;
1022 		if (1 + pos[0] > end - pos) {
1023 			wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
1024 				   "OSU SSID");
1025 			continue;
1026 		}
1027 		osu_ssid_len = *pos++;
1028 		if (osu_ssid_len > SSID_MAX_LEN) {
1029 			wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
1030 				   "Length %u", osu_ssid_len);
1031 			continue;
1032 		}
1033 		osu_ssid = pos;
1034 		pos += osu_ssid_len;
1035 
1036 		if (end - pos < 1) {
1037 			wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
1038 				   "Number of OSU Providers");
1039 			continue;
1040 		}
1041 		num_providers = *pos++;
1042 		wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
1043 			   num_providers);
1044 
1045 		/* OSU Providers */
1046 		while (end - pos > 2 && num_providers > 0) {
1047 			num_providers--;
1048 			len = WPA_GET_LE16(pos);
1049 			pos += 2;
1050 			if (len > (unsigned int) (end - pos))
1051 				break;
1052 			hs20_osu_add_prov(wpa_s, bss, osu_ssid,
1053 					  osu_ssid_len, pos, len);
1054 			pos += len;
1055 		}
1056 
1057 		if (pos != end) {
1058 			wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
1059 				   "extra data after OSU Providers",
1060 				   (int) (end - pos));
1061 		}
1062 	}
1063 
1064 	wpa_s->fetch_osu_icon_in_progress = 1;
1065 	hs20_next_osu_icon(wpa_s);
1066 }
1067 
1068 
hs20_osu_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)1069 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
1070 				      struct wpa_scan_results *scan_res)
1071 {
1072 	wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
1073 	if (!wpa_s->fetch_osu_waiting_scan) {
1074 		wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
1075 		return;
1076 	}
1077 	wpa_s->network_select = 0;
1078 	wpa_s->fetch_all_anqp = 1;
1079 	wpa_s->fetch_osu_info = 1;
1080 	wpa_s->fetch_osu_icon_in_progress = 0;
1081 
1082 	interworking_start_fetch_anqp(wpa_s);
1083 }
1084 
1085 
hs20_fetch_osu(struct wpa_supplicant * wpa_s,int skip_scan)1086 int hs20_fetch_osu(struct wpa_supplicant *wpa_s, int skip_scan)
1087 {
1088 	if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1089 		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1090 			   "interface disabled");
1091 		return -1;
1092 	}
1093 
1094 	if (wpa_s->scanning) {
1095 		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1096 			   "scanning");
1097 		return -1;
1098 	}
1099 
1100 	if (wpa_s->conf->osu_dir == NULL) {
1101 		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1102 			   "osu_dir not configured");
1103 		return -1;
1104 	}
1105 
1106 	if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
1107 		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1108 			   "fetch in progress (%d, %d)",
1109 			   wpa_s->fetch_anqp_in_progress,
1110 			   wpa_s->network_select);
1111 		return -1;
1112 	}
1113 
1114 	wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
1115 	wpa_s->num_osu_scans = 0;
1116 	wpa_s->num_prov_found = 0;
1117 	if (skip_scan) {
1118 		wpa_s->network_select = 0;
1119 		wpa_s->fetch_all_anqp = 1;
1120 		wpa_s->fetch_osu_info = 1;
1121 		wpa_s->fetch_osu_icon_in_progress = 0;
1122 
1123 		interworking_start_fetch_anqp(wpa_s);
1124 	} else {
1125 		hs20_start_osu_scan(wpa_s);
1126 	}
1127 
1128 	return 0;
1129 }
1130 
1131 
hs20_start_osu_scan(struct wpa_supplicant * wpa_s)1132 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
1133 {
1134 	wpa_s->fetch_osu_waiting_scan = 1;
1135 	wpa_s->num_osu_scans++;
1136 	wpa_s->scan_req = MANUAL_SCAN_REQ;
1137 	wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
1138 	wpa_supplicant_req_scan(wpa_s, 0, 0);
1139 }
1140 
1141 
hs20_cancel_fetch_osu(struct wpa_supplicant * wpa_s)1142 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
1143 {
1144 	wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
1145 	interworking_stop_fetch_anqp(wpa_s);
1146 	wpa_s->fetch_osu_waiting_scan = 0;
1147 	wpa_s->network_select = 0;
1148 	wpa_s->fetch_osu_info = 0;
1149 	wpa_s->fetch_osu_icon_in_progress = 0;
1150 }
1151 
1152 
hs20_icon_fetch_failed(struct wpa_supplicant * wpa_s)1153 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
1154 {
1155 	hs20_osu_icon_fetch_result(wpa_s, -1);
1156 	eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1157 	eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
1158 }
1159 
1160 
hs20_rx_subscription_remediation(struct wpa_supplicant * wpa_s,const char * url,u8 osu_method)1161 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
1162 				      const char *url, u8 osu_method)
1163 {
1164 	if (url)
1165 		wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
1166 			osu_method, url);
1167 	else
1168 		wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
1169 	wpas_notify_hs20_rx_subscription_remediation(wpa_s, url, osu_method);
1170 }
1171 
1172 
hs20_rx_deauth_imminent_notice(struct wpa_supplicant * wpa_s,u8 code,u16 reauth_delay,const char * url)1173 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
1174 				    u16 reauth_delay, const char *url)
1175 {
1176 	if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
1177 		wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
1178 		return;
1179 	}
1180 
1181 	wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
1182 		code, reauth_delay, url);
1183 	wpas_notify_hs20_rx_deauth_imminent_notice(wpa_s, code, reauth_delay, url);
1184 
1185 	if (code == HS20_DEAUTH_REASON_CODE_BSS) {
1186 		wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
1187 		wpa_blacklist_add(wpa_s, wpa_s->bssid);
1188 		/* TODO: For now, disable full ESS since some drivers may not
1189 		 * support disabling per BSS. */
1190 		if (wpa_s->current_ssid) {
1191 			struct os_reltime now;
1192 			os_get_reltime(&now);
1193 			if (now.sec + reauth_delay <=
1194 			    wpa_s->current_ssid->disabled_until.sec)
1195 				return;
1196 			wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
1197 				   reauth_delay);
1198 			wpa_s->current_ssid->disabled_until.sec =
1199 				now.sec + reauth_delay;
1200 		}
1201 	}
1202 
1203 	if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
1204 		struct os_reltime now;
1205 		os_get_reltime(&now);
1206 		if (now.sec + reauth_delay <=
1207 		    wpa_s->current_ssid->disabled_until.sec)
1208 			return;
1209 		wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
1210 			   reauth_delay);
1211 		wpa_s->current_ssid->disabled_until.sec =
1212 			now.sec + reauth_delay;
1213 	}
1214 }
1215 
1216 
hs20_init(struct wpa_supplicant * wpa_s)1217 void hs20_init(struct wpa_supplicant *wpa_s)
1218 {
1219 	dl_list_init(&wpa_s->icon_head);
1220 }
1221 
1222 
hs20_deinit(struct wpa_supplicant * wpa_s)1223 void hs20_deinit(struct wpa_supplicant *wpa_s)
1224 {
1225 	eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1226 	hs20_free_osu_prov(wpa_s);
1227 	if (wpa_s->icon_head.next)
1228 		hs20_del_icon(wpa_s, NULL, NULL);
1229 }
1230