Line data Source code
1 : /*
2 : * Wi-Fi Direct - P2P module
3 : * Copyright (c) 2009-2010, Atheros Communications
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 :
11 : #include "common.h"
12 : #include "eloop.h"
13 : #include "common/ieee802_11_defs.h"
14 : #include "common/ieee802_11_common.h"
15 : #include "wps/wps_i.h"
16 : #include "p2p_i.h"
17 : #include "p2p.h"
18 :
19 :
20 : static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
21 : static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
22 : static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
23 : const u8 *sa, const u8 *data, size_t len,
24 : int rx_freq);
25 : static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
26 : const u8 *sa, const u8 *data,
27 : size_t len);
28 : static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
29 : static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
30 :
31 :
32 : /*
33 : * p2p_scan recovery timeout
34 : *
35 : * Many drivers are using 30 second timeout on scan results. Allow a bit larger
36 : * timeout for this to avoid hitting P2P timeout unnecessarily.
37 : */
38 : #define P2P_SCAN_TIMEOUT 35
39 :
40 : /**
41 : * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 : * entries will be removed
43 : */
44 : #ifndef P2P_PEER_EXPIRATION_AGE
45 : #define P2P_PEER_EXPIRATION_AGE 60
46 : #endif /* P2P_PEER_EXPIRATION_AGE */
47 :
48 : #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
49 :
50 243 : static void p2p_expire_peers(struct p2p_data *p2p)
51 : {
52 : struct p2p_device *dev, *n;
53 : struct os_reltime now;
54 : size_t i;
55 :
56 243 : os_get_reltime(&now);
57 292 : dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
58 49 : if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
59 46 : continue;
60 :
61 3 : if (dev == p2p->go_neg_peer) {
62 : /*
63 : * GO Negotiation is in progress with the peer, so
64 : * don't expire the peer entry until GO Negotiation
65 : * fails or times out.
66 : */
67 2 : continue;
68 : }
69 :
70 2 : if (p2p->cfg->go_connected &&
71 2 : p2p->cfg->go_connected(p2p->cfg->cb_ctx,
72 1 : dev->info.p2p_device_addr)) {
73 : /*
74 : * We are connected as a client to a group in which the
75 : * peer is the GO, so do not expire the peer entry.
76 : */
77 0 : os_get_reltime(&dev->last_seen);
78 0 : continue;
79 : }
80 :
81 1 : for (i = 0; i < p2p->num_groups; i++) {
82 0 : if (p2p_group_is_client_connected(
83 0 : p2p->groups[i], dev->info.p2p_device_addr))
84 0 : break;
85 : }
86 1 : if (i < p2p->num_groups) {
87 : /*
88 : * The peer is connected as a client in a group where
89 : * we are the GO, so do not expire the peer entry.
90 : */
91 0 : os_get_reltime(&dev->last_seen);
92 0 : continue;
93 : }
94 :
95 6 : p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
96 6 : MAC2STR(dev->info.p2p_device_addr));
97 1 : dl_list_del(&dev->list);
98 1 : p2p_device_free(p2p, dev);
99 : }
100 243 : }
101 :
102 :
103 243 : static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
104 : {
105 243 : struct p2p_data *p2p = eloop_ctx;
106 243 : p2p_expire_peers(p2p);
107 243 : eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
108 : p2p_expiration_timeout, p2p, NULL);
109 243 : }
110 :
111 :
112 28516 : static const char * p2p_state_txt(int state)
113 : {
114 28516 : switch (state) {
115 : case P2P_IDLE:
116 19585 : return "IDLE";
117 : case P2P_SEARCH:
118 3249 : return "SEARCH";
119 : case P2P_CONNECT:
120 931 : return "CONNECT";
121 : case P2P_CONNECT_LISTEN:
122 78 : return "CONNECT_LISTEN";
123 : case P2P_GO_NEG:
124 462 : return "GO_NEG";
125 : case P2P_LISTEN_ONLY:
126 977 : return "LISTEN_ONLY";
127 : case P2P_WAIT_PEER_CONNECT:
128 1414 : return "WAIT_PEER_CONNECT";
129 : case P2P_WAIT_PEER_IDLE:
130 1145 : return "WAIT_PEER_IDLE";
131 : case P2P_SD_DURING_FIND:
132 105 : return "SD_DURING_FIND";
133 : case P2P_PROVISIONING:
134 396 : return "PROVISIONING";
135 : case P2P_PD_DURING_FIND:
136 12 : return "PD_DURING_FIND";
137 : case P2P_INVITE:
138 158 : return "INVITE";
139 : case P2P_INVITE_LISTEN:
140 4 : return "INVITE_LISTEN";
141 : default:
142 0 : return "?";
143 : }
144 : }
145 :
146 :
147 6 : const char * p2p_get_state_txt(struct p2p_data *p2p)
148 : {
149 6 : return p2p_state_txt(p2p->state);
150 : }
151 :
152 :
153 35 : u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
154 : {
155 35 : struct p2p_device *dev = NULL;
156 :
157 35 : if (!addr || !p2p)
158 0 : return 0;
159 :
160 35 : dev = p2p_get_device(p2p, addr);
161 35 : if (dev)
162 35 : return dev->wps_prov_info;
163 : else
164 0 : return 0;
165 : }
166 :
167 :
168 126 : void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
169 : {
170 126 : struct p2p_device *dev = NULL;
171 :
172 126 : if (!addr || !p2p)
173 126 : return;
174 :
175 126 : dev = p2p_get_device(p2p, addr);
176 126 : if (dev)
177 118 : dev->wps_prov_info = 0;
178 : }
179 :
180 :
181 8748 : void p2p_set_state(struct p2p_data *p2p, int new_state)
182 : {
183 17496 : p2p_dbg(p2p, "State %s -> %s",
184 8748 : p2p_state_txt(p2p->state), p2p_state_txt(new_state));
185 8748 : p2p->state = new_state;
186 8748 : }
187 :
188 :
189 1772 : void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
190 : {
191 1772 : p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
192 1772 : p2p_state_txt(p2p->state), sec, usec);
193 1772 : eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
194 1772 : eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
195 1772 : }
196 :
197 :
198 7235 : void p2p_clear_timeout(struct p2p_data *p2p)
199 : {
200 7235 : p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
201 7235 : eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
202 7235 : }
203 :
204 :
205 21 : void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
206 : int status)
207 : {
208 : struct p2p_go_neg_results res;
209 21 : p2p_clear_timeout(p2p);
210 21 : p2p_set_state(p2p, P2P_IDLE);
211 21 : if (p2p->go_neg_peer) {
212 21 : p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
213 21 : p2p->go_neg_peer->wps_method = WPS_NOT_READY;
214 21 : p2p->go_neg_peer->oob_pw_id = 0;
215 : }
216 21 : p2p->go_neg_peer = NULL;
217 :
218 21 : os_memset(&res, 0, sizeof(res));
219 21 : res.status = status;
220 21 : if (peer) {
221 21 : wpabuf_free(peer->go_neg_conf);
222 21 : peer->go_neg_conf = NULL;
223 21 : os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
224 : ETH_ALEN);
225 21 : os_memcpy(res.peer_interface_addr, peer->intended_addr,
226 : ETH_ALEN);
227 : }
228 21 : p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
229 21 : }
230 :
231 :
232 838 : static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
233 : {
234 : unsigned int r, tu;
235 : int freq;
236 : struct wpabuf *ies;
237 :
238 838 : p2p_dbg(p2p, "Starting short listen state (state=%s)",
239 838 : p2p_state_txt(p2p->state));
240 :
241 838 : if (p2p->pending_listen_freq) {
242 : /* We have a pending p2p_listen request */
243 0 : p2p_dbg(p2p, "p2p_listen command pending already");
244 0 : return;
245 : }
246 :
247 838 : freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
248 838 : if (freq < 0) {
249 0 : p2p_dbg(p2p, "Unknown regulatory class/channel");
250 0 : return;
251 : }
252 :
253 838 : os_get_random((u8 *) &r, sizeof(r));
254 1676 : tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
255 838 : p2p->min_disc_int) * 100;
256 838 : if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
257 0 : tu = p2p->max_disc_tu;
258 838 : if (!dev_disc && tu < 100)
259 0 : tu = 100; /* Need to wait in non-device discovery use cases */
260 838 : if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
261 0 : tu = p2p->cfg->max_listen * 1000 / 1024;
262 :
263 838 : if (tu == 0) {
264 0 : p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
265 0 : p2p_set_timeout(p2p, 0, 0);
266 0 : return;
267 : }
268 :
269 838 : ies = p2p_build_probe_resp_ies(p2p);
270 838 : if (ies == NULL)
271 0 : return;
272 :
273 838 : p2p->pending_listen_freq = freq;
274 838 : p2p->pending_listen_sec = 0;
275 838 : p2p->pending_listen_usec = 1024 * tu;
276 :
277 838 : if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
278 : ies) < 0) {
279 0 : p2p_dbg(p2p, "Failed to start listen mode");
280 0 : p2p->pending_listen_freq = 0;
281 : }
282 838 : wpabuf_free(ies);
283 : }
284 :
285 :
286 275 : int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
287 : {
288 : int freq;
289 : struct wpabuf *ies;
290 :
291 275 : p2p_dbg(p2p, "Going to listen(only) state");
292 :
293 275 : if (p2p->pending_listen_freq) {
294 : /* We have a pending p2p_listen request */
295 0 : p2p_dbg(p2p, "p2p_listen command pending already");
296 0 : return -1;
297 : }
298 :
299 275 : freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
300 275 : if (freq < 0) {
301 0 : p2p_dbg(p2p, "Unknown regulatory class/channel");
302 0 : return -1;
303 : }
304 :
305 275 : p2p->pending_listen_sec = timeout / 1000;
306 275 : p2p->pending_listen_usec = (timeout % 1000) * 1000;
307 :
308 275 : if (p2p->p2p_scan_running) {
309 19 : if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
310 0 : p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
311 0 : return 0;
312 : }
313 19 : p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
314 19 : p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
315 19 : return 0;
316 : }
317 :
318 256 : ies = p2p_build_probe_resp_ies(p2p);
319 256 : if (ies == NULL)
320 0 : return -1;
321 :
322 256 : p2p->pending_listen_freq = freq;
323 :
324 256 : if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
325 0 : p2p_dbg(p2p, "Failed to start listen mode");
326 0 : p2p->pending_listen_freq = 0;
327 0 : wpabuf_free(ies);
328 0 : return -1;
329 : }
330 256 : wpabuf_free(ies);
331 :
332 256 : p2p_set_state(p2p, P2P_LISTEN_ONLY);
333 :
334 256 : return 0;
335 : }
336 :
337 :
338 207 : static void p2p_device_clear_reported(struct p2p_data *p2p)
339 : {
340 : struct p2p_device *dev;
341 268 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
342 61 : dev->flags &= ~P2P_DEV_REPORTED;
343 207 : }
344 :
345 :
346 : /**
347 : * p2p_get_device - Fetch a peer entry
348 : * @p2p: P2P module context from p2p_init()
349 : * @addr: P2P Device Address of the peer
350 : * Returns: Pointer to the device entry or %NULL if not found
351 : */
352 3279 : struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
353 : {
354 : struct p2p_device *dev;
355 3567 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
356 2876 : if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
357 2588 : return dev;
358 : }
359 691 : return NULL;
360 : }
361 :
362 :
363 : /**
364 : * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
365 : * @p2p: P2P module context from p2p_init()
366 : * @addr: P2P Interface Address of the peer
367 : * Returns: Pointer to the device entry or %NULL if not found
368 : */
369 104 : struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
370 : const u8 *addr)
371 : {
372 : struct p2p_device *dev;
373 230 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
374 137 : if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
375 11 : return dev;
376 : }
377 93 : return NULL;
378 : }
379 :
380 :
381 : /**
382 : * p2p_create_device - Create a peer entry
383 : * @p2p: P2P module context from p2p_init()
384 : * @addr: P2P Device Address of the peer
385 : * Returns: Pointer to the device entry or %NULL on failure
386 : *
387 : * If there is already an entry for the peer, it will be returned instead of
388 : * creating a new one.
389 : */
390 1058 : static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
391 : const u8 *addr)
392 : {
393 1058 : struct p2p_device *dev, *oldest = NULL;
394 1058 : size_t count = 0;
395 :
396 1058 : dev = p2p_get_device(p2p, addr);
397 1058 : if (dev)
398 716 : return dev;
399 :
400 394 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
401 52 : count++;
402 52 : if (oldest == NULL ||
403 0 : os_reltime_before(&dev->last_seen, &oldest->last_seen))
404 52 : oldest = dev;
405 : }
406 342 : if (count + 1 > p2p->cfg->max_peers && oldest) {
407 0 : p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
408 0 : dl_list_del(&oldest->list);
409 0 : p2p_device_free(p2p, oldest);
410 : }
411 :
412 342 : dev = os_zalloc(sizeof(*dev));
413 342 : if (dev == NULL)
414 0 : return NULL;
415 342 : dl_list_add(&p2p->devices, &dev->list);
416 342 : os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
417 :
418 342 : return dev;
419 : }
420 :
421 :
422 20 : static void p2p_copy_client_info(struct p2p_device *dev,
423 : struct p2p_client_info *cli)
424 : {
425 20 : os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
426 20 : dev->info.device_name[cli->dev_name_len] = '\0';
427 20 : dev->info.dev_capab = cli->dev_capab;
428 20 : dev->info.config_methods = cli->config_methods;
429 20 : os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
430 20 : dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
431 20 : os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
432 : dev->info.wps_sec_dev_type_list_len);
433 20 : }
434 :
435 :
436 551 : static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
437 : const u8 *go_interface_addr, int freq,
438 : const u8 *gi, size_t gi_len)
439 : {
440 : struct p2p_group_info info;
441 : size_t c;
442 : struct p2p_device *dev;
443 :
444 551 : if (gi == NULL)
445 529 : return 0;
446 :
447 22 : if (p2p_group_info_parse(gi, gi_len, &info) < 0)
448 0 : return -1;
449 :
450 : /*
451 : * Clear old data for this group; if the devices are still in the
452 : * group, the information will be restored in the loop following this.
453 : */
454 54 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
455 32 : if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
456 : ETH_ALEN) == 0) {
457 8 : os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
458 8 : os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
459 : }
460 : }
461 :
462 44 : for (c = 0; c < info.num_clients; c++) {
463 22 : struct p2p_client_info *cli = &info.client[c];
464 22 : if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
465 : ETH_ALEN) == 0)
466 1 : continue; /* ignore our own entry */
467 21 : dev = p2p_get_device(p2p, cli->p2p_device_addr);
468 21 : if (dev) {
469 10 : if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
470 : P2P_DEV_PROBE_REQ_ONLY)) {
471 : /*
472 : * Update information since we have not
473 : * received this directly from the client.
474 : */
475 9 : p2p_copy_client_info(dev, cli);
476 : } else {
477 : /*
478 : * Need to update P2P Client Discoverability
479 : * flag since it is valid only in P2P Group
480 : * Info attribute.
481 : */
482 1 : dev->info.dev_capab &=
483 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
484 2 : dev->info.dev_capab |=
485 1 : cli->dev_capab &
486 : P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
487 : }
488 10 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
489 0 : dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
490 : }
491 : } else {
492 11 : dev = p2p_create_device(p2p, cli->p2p_device_addr);
493 11 : if (dev == NULL)
494 0 : continue;
495 11 : dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
496 11 : p2p_copy_client_info(dev, cli);
497 11 : dev->oper_freq = freq;
498 22 : p2p->cfg->dev_found(p2p->cfg->cb_ctx,
499 11 : dev->info.p2p_device_addr,
500 11 : &dev->info, 1);
501 11 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
502 : }
503 :
504 21 : os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
505 : ETH_ALEN);
506 21 : os_get_reltime(&dev->last_seen);
507 21 : os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
508 21 : os_memcpy(dev->member_in_go_iface, go_interface_addr,
509 : ETH_ALEN);
510 : }
511 :
512 22 : return 0;
513 : }
514 :
515 :
516 999 : static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
517 : int probe_req, const struct p2p_message *msg)
518 : {
519 999 : os_memcpy(dev->info.device_name, msg->device_name,
520 : sizeof(dev->info.device_name));
521 :
522 1708 : if (msg->manufacturer &&
523 709 : msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
524 709 : os_memset(dev->info.manufacturer, 0,
525 : sizeof(dev->info.manufacturer));
526 709 : os_memcpy(dev->info.manufacturer, msg->manufacturer,
527 : msg->manufacturer_len);
528 : }
529 :
530 1708 : if (msg->model_name &&
531 709 : msg->model_name_len < sizeof(dev->info.model_name)) {
532 709 : os_memset(dev->info.model_name, 0,
533 : sizeof(dev->info.model_name));
534 709 : os_memcpy(dev->info.model_name, msg->model_name,
535 : msg->model_name_len);
536 : }
537 :
538 1708 : if (msg->model_number &&
539 709 : msg->model_number_len < sizeof(dev->info.model_number)) {
540 709 : os_memset(dev->info.model_number, 0,
541 : sizeof(dev->info.model_number));
542 709 : os_memcpy(dev->info.model_number, msg->model_number,
543 : msg->model_number_len);
544 : }
545 :
546 1571 : if (msg->serial_number &&
547 572 : msg->serial_number_len < sizeof(dev->info.serial_number)) {
548 572 : os_memset(dev->info.serial_number, 0,
549 : sizeof(dev->info.serial_number));
550 572 : os_memcpy(dev->info.serial_number, msg->serial_number,
551 : msg->serial_number_len);
552 : }
553 :
554 999 : if (msg->pri_dev_type)
555 859 : os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
556 : sizeof(dev->info.pri_dev_type));
557 140 : else if (msg->wps_pri_dev_type)
558 139 : os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
559 : sizeof(dev->info.pri_dev_type));
560 :
561 999 : if (msg->wps_sec_dev_type_list) {
562 25 : os_memcpy(dev->info.wps_sec_dev_type_list,
563 : msg->wps_sec_dev_type_list,
564 : msg->wps_sec_dev_type_list_len);
565 25 : dev->info.wps_sec_dev_type_list_len =
566 25 : msg->wps_sec_dev_type_list_len;
567 : }
568 :
569 999 : if (msg->capability) {
570 : /*
571 : * P2P Client Discoverability bit is reserved in all frames
572 : * that use this function, so do not change its value here.
573 : */
574 992 : dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
575 992 : dev->info.dev_capab |= msg->capability[0] &
576 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
577 992 : dev->info.group_capab = msg->capability[1];
578 : }
579 :
580 999 : if (msg->ext_listen_timing) {
581 7 : dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
582 7 : dev->ext_listen_interval =
583 7 : WPA_GET_LE16(msg->ext_listen_timing + 2);
584 : }
585 :
586 999 : if (!probe_req) {
587 : u16 new_config_methods;
588 861 : new_config_methods = msg->config_methods ?
589 : msg->config_methods : msg->wps_config_methods;
590 1712 : if (new_config_methods &&
591 851 : dev->info.config_methods != new_config_methods) {
592 2368 : p2p_dbg(p2p, "Update peer " MACSTR
593 : " config_methods 0x%x -> 0x%x",
594 1776 : MAC2STR(dev->info.p2p_device_addr),
595 296 : dev->info.config_methods,
596 : new_config_methods);
597 296 : dev->info.config_methods = new_config_methods;
598 : }
599 : }
600 999 : }
601 :
602 :
603 : /**
604 : * p2p_add_device - Add peer entries based on scan results or P2P frames
605 : * @p2p: P2P module context from p2p_init()
606 : * @addr: Source address of Beacon or Probe Response frame (may be either
607 : * P2P Device Address or P2P Interface Address)
608 : * @level: Signal level (signal strength of the received frame from the peer)
609 : * @freq: Frequency on which the Beacon or Probe Response frame was received
610 : * @rx_time: Time when the result was received
611 : * @ies: IEs from the Beacon or Probe Response frame
612 : * @ies_len: Length of ies buffer in octets
613 : * @scan_res: Whether this was based on scan results
614 : * Returns: 0 on success, -1 on failure
615 : *
616 : * If the scan result is for a GO, the clients in the group will also be added
617 : * to the peer table. This function can also be used with some other frames
618 : * like Provision Discovery Request that contains P2P Capability and P2P Device
619 : * Info attributes.
620 : */
621 966 : int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
622 : struct os_reltime *rx_time, int level, const u8 *ies,
623 : size_t ies_len, int scan_res)
624 : {
625 : struct p2p_device *dev;
626 : struct p2p_message msg;
627 : const u8 *p2p_dev_addr;
628 : int i;
629 : struct os_reltime time_now;
630 :
631 966 : os_memset(&msg, 0, sizeof(msg));
632 966 : if (p2p_parse_ies(ies, ies_len, &msg)) {
633 0 : p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
634 0 : p2p_parse_free(&msg);
635 0 : return -1;
636 : }
637 :
638 966 : if (msg.p2p_device_addr)
639 875 : p2p_dev_addr = msg.p2p_device_addr;
640 91 : else if (msg.device_id)
641 4 : p2p_dev_addr = msg.device_id;
642 : else {
643 87 : p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
644 87 : p2p_parse_free(&msg);
645 87 : return -1;
646 : }
647 :
648 879 : if (!is_zero_ether_addr(p2p->peer_filter) &&
649 0 : os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
650 0 : p2p_dbg(p2p, "Do not add peer filter for " MACSTR
651 0 : " due to peer filter", MAC2STR(p2p_dev_addr));
652 0 : p2p_parse_free(&msg);
653 0 : return 0;
654 : }
655 :
656 879 : dev = p2p_create_device(p2p, p2p_dev_addr);
657 879 : if (dev == NULL) {
658 0 : p2p_parse_free(&msg);
659 0 : return -1;
660 : }
661 :
662 879 : if (rx_time == NULL) {
663 267 : os_get_reltime(&time_now);
664 267 : rx_time = &time_now;
665 : }
666 :
667 : /*
668 : * Update the device entry only if the new peer
669 : * entry is newer than the one previously stored.
670 : */
671 1595 : if (dev->last_seen.sec > 0 &&
672 716 : os_reltime_before(rx_time, &dev->last_seen)) {
673 244 : p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
674 61 : (unsigned int) rx_time->sec,
675 61 : (unsigned int) rx_time->usec,
676 61 : (unsigned int) dev->last_seen.sec,
677 61 : (unsigned int) dev->last_seen.usec);
678 61 : p2p_parse_free(&msg);
679 61 : return -1;
680 : }
681 :
682 818 : os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
683 :
684 818 : dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
685 :
686 818 : if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
687 43 : os_memcpy(dev->interface_addr, addr, ETH_ALEN);
688 1596 : if (msg.ssid &&
689 1241 : (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
690 463 : os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
691 : != 0)) {
692 315 : os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
693 315 : dev->oper_ssid_len = msg.ssid[1];
694 : }
695 :
696 1369 : if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
697 1102 : *msg.ds_params >= 1 && *msg.ds_params <= 14) {
698 : int ds_freq;
699 551 : if (*msg.ds_params == 14)
700 0 : ds_freq = 2484;
701 : else
702 551 : ds_freq = 2407 + *msg.ds_params * 5;
703 551 : if (freq != ds_freq) {
704 0 : p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
705 : freq, ds_freq);
706 0 : freq = ds_freq;
707 : }
708 : }
709 :
710 818 : if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
711 16 : p2p_dbg(p2p, "Update Listen frequency based on scan results ("
712 : MACSTR " %d -> %d MHz (DS param %d)",
713 12 : MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
714 4 : freq, msg.ds_params ? *msg.ds_params : -1);
715 : }
716 818 : if (scan_res) {
717 551 : dev->listen_freq = freq;
718 551 : if (msg.group_info)
719 22 : dev->oper_freq = freq;
720 : }
721 818 : dev->info.level = level;
722 :
723 818 : p2p_copy_wps_info(p2p, dev, 0, &msg);
724 :
725 8998 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
726 8180 : wpabuf_free(dev->info.wps_vendor_ext[i]);
727 8180 : dev->info.wps_vendor_ext[i] = NULL;
728 : }
729 :
730 818 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
731 818 : if (msg.wps_vendor_ext[i] == NULL)
732 818 : break;
733 0 : dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
734 0 : msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
735 0 : if (dev->info.wps_vendor_ext[i] == NULL)
736 0 : break;
737 : }
738 :
739 818 : if (msg.wfd_subelems) {
740 7 : wpabuf_free(dev->info.wfd_subelems);
741 7 : dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
742 : }
743 :
744 818 : if (scan_res) {
745 551 : p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
746 : msg.group_info, msg.group_info_len);
747 : }
748 :
749 818 : p2p_parse_free(&msg);
750 :
751 818 : if (dev->flags & P2P_DEV_REPORTED)
752 556 : return 0;
753 :
754 524 : p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
755 262 : freq, (unsigned int) rx_time->sec,
756 262 : (unsigned int) rx_time->usec);
757 262 : if (dev->flags & P2P_DEV_USER_REJECTED) {
758 0 : p2p_dbg(p2p, "Do not report rejected device");
759 0 : return 0;
760 : }
761 :
762 262 : if (dev->info.config_methods == 0 &&
763 0 : (freq == 2412 || freq == 2437 || freq == 2462)) {
764 : /*
765 : * If we have only seen a Beacon frame from a GO, we do not yet
766 : * know what WPS config methods it supports. Since some
767 : * applications use config_methods value from P2P-DEVICE-FOUND
768 : * events, postpone reporting this peer until we've fully
769 : * discovered its capabilities.
770 : *
771 : * At least for now, do this only if the peer was detected on
772 : * one of the social channels since that peer can be easily be
773 : * found again and there are no limitations of having to use
774 : * passive scan on this channels, so this can be done through
775 : * Probe Response frame that includes the config_methods
776 : * information.
777 : */
778 12 : p2p_dbg(p2p, "Do not report peer " MACSTR
779 12 : " with unknown config methods", MAC2STR(addr));
780 2 : return 0;
781 : }
782 :
783 520 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
784 260 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
785 260 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
786 :
787 260 : return 0;
788 : }
789 :
790 :
791 342 : static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
792 : {
793 : int i;
794 :
795 342 : if (p2p->go_neg_peer == dev) {
796 : /*
797 : * If GO Negotiation is in progress, report that it has failed.
798 : */
799 0 : p2p_go_neg_failed(p2p, dev, -1);
800 0 : p2p->go_neg_peer = NULL;
801 : }
802 342 : if (p2p->invite_peer == dev)
803 0 : p2p->invite_peer = NULL;
804 342 : if (p2p->sd_peer == dev)
805 0 : p2p->sd_peer = NULL;
806 342 : if (p2p->pending_client_disc_go == dev)
807 1 : p2p->pending_client_disc_go = NULL;
808 :
809 : /* dev_lost() device, but only if it was previously dev_found() */
810 342 : if (dev->flags & P2P_DEV_REPORTED_ONCE)
811 616 : p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
812 308 : dev->info.p2p_device_addr);
813 :
814 3762 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
815 3420 : wpabuf_free(dev->info.wps_vendor_ext[i]);
816 3420 : dev->info.wps_vendor_ext[i] = NULL;
817 : }
818 :
819 342 : wpabuf_free(dev->info.wfd_subelems);
820 342 : wpabuf_free(dev->go_neg_conf);
821 :
822 342 : os_free(dev);
823 342 : }
824 :
825 :
826 3 : static int p2p_get_next_prog_freq(struct p2p_data *p2p)
827 : {
828 : struct p2p_channels *c;
829 : struct p2p_reg_class *cla;
830 : size_t cl, ch;
831 3 : int found = 0;
832 : u8 reg_class;
833 : u8 channel;
834 : int freq;
835 :
836 3 : c = &p2p->cfg->channels;
837 4 : for (cl = 0; cl < c->reg_classes; cl++) {
838 3 : cla = &c->reg_class[cl];
839 3 : if (cla->reg_class != p2p->last_prog_scan_class)
840 1 : continue;
841 3 : for (ch = 0; ch < cla->channels; ch++) {
842 3 : if (cla->channel[ch] == p2p->last_prog_scan_chan) {
843 2 : found = 1;
844 2 : break;
845 : }
846 : }
847 2 : if (found)
848 2 : break;
849 : }
850 :
851 3 : if (!found) {
852 : /* Start from beginning */
853 1 : reg_class = c->reg_class[0].reg_class;
854 1 : channel = c->reg_class[0].channel[0];
855 : } else {
856 : /* Pick the next channel */
857 2 : ch++;
858 2 : if (ch == cla->channels) {
859 0 : cl++;
860 0 : if (cl == c->reg_classes)
861 0 : cl = 0;
862 0 : ch = 0;
863 : }
864 2 : reg_class = c->reg_class[cl].reg_class;
865 2 : channel = c->reg_class[cl].channel[ch];
866 : }
867 :
868 3 : freq = p2p_channel_to_freq(reg_class, channel);
869 3 : p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
870 : reg_class, channel, freq);
871 3 : p2p->last_prog_scan_class = reg_class;
872 3 : p2p->last_prog_scan_chan = channel;
873 :
874 3 : if (freq == 2412 || freq == 2437 || freq == 2462)
875 1 : return 0; /* No need to add social channels */
876 2 : return freq;
877 : }
878 :
879 :
880 416 : static void p2p_search(struct p2p_data *p2p)
881 : {
882 416 : int freq = 0;
883 : enum p2p_scan_type type;
884 416 : u16 pw_id = DEV_PW_DEFAULT;
885 : int res;
886 :
887 416 : if (p2p->drv_in_listen) {
888 0 : p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
889 416 : return;
890 : }
891 416 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
892 :
893 416 : if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
894 : (freq = p2p_get_next_prog_freq(p2p)) > 0) {
895 2 : type = P2P_SCAN_SOCIAL_PLUS_ONE;
896 2 : p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
897 : } else {
898 414 : type = P2P_SCAN_SOCIAL;
899 414 : p2p_dbg(p2p, "Starting search");
900 : }
901 :
902 832 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
903 416 : p2p->num_req_dev_types, p2p->req_dev_types,
904 416 : p2p->find_dev_id, pw_id);
905 416 : if (res < 0) {
906 0 : p2p_dbg(p2p, "Scan request failed");
907 0 : p2p_continue_find(p2p);
908 : } else {
909 416 : p2p_dbg(p2p, "Running p2p_scan");
910 416 : p2p->p2p_scan_running = 1;
911 416 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
912 416 : eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
913 : p2p, NULL);
914 : }
915 : }
916 :
917 :
918 0 : static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
919 : {
920 0 : struct p2p_data *p2p = eloop_ctx;
921 0 : p2p_dbg(p2p, "Find timeout -> stop");
922 0 : p2p_stop_find(p2p);
923 0 : }
924 :
925 :
926 648 : static int p2p_run_after_scan(struct p2p_data *p2p)
927 : {
928 : struct p2p_device *dev;
929 : enum p2p_after_scan op;
930 :
931 648 : if (p2p->after_scan_tx) {
932 8 : p2p->after_scan_tx_in_progress = 1;
933 8 : p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
934 40 : p2p->cfg->send_action(p2p->cfg->cb_ctx,
935 8 : p2p->after_scan_tx->freq,
936 8 : p2p->after_scan_tx->dst,
937 8 : p2p->after_scan_tx->src,
938 8 : p2p->after_scan_tx->bssid,
939 8 : (u8 *) (p2p->after_scan_tx + 1),
940 8 : p2p->after_scan_tx->len,
941 8 : p2p->after_scan_tx->wait_time);
942 8 : os_free(p2p->after_scan_tx);
943 8 : p2p->after_scan_tx = NULL;
944 8 : return 1;
945 : }
946 :
947 640 : op = p2p->start_after_scan;
948 640 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
949 640 : switch (op) {
950 : case P2P_AFTER_SCAN_NOTHING:
951 590 : break;
952 : case P2P_AFTER_SCAN_LISTEN:
953 18 : p2p_dbg(p2p, "Start previously requested Listen state");
954 36 : p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
955 18 : p2p->pending_listen_usec / 1000);
956 18 : return 1;
957 : case P2P_AFTER_SCAN_CONNECT:
958 192 : p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
959 192 : MAC2STR(p2p->after_scan_peer));
960 32 : dev = p2p_get_device(p2p, p2p->after_scan_peer);
961 32 : if (dev == NULL) {
962 0 : p2p_dbg(p2p, "Peer not known anymore");
963 0 : break;
964 : }
965 32 : p2p_connect_send(p2p, dev);
966 32 : return 1;
967 : }
968 :
969 590 : return 0;
970 : }
971 :
972 :
973 0 : static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
974 : {
975 0 : struct p2p_data *p2p = eloop_ctx;
976 : int running;
977 0 : p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
978 0 : running = p2p->p2p_scan_running;
979 : /* Make sure we recover from missed scan results callback */
980 0 : p2p->p2p_scan_running = 0;
981 :
982 0 : if (running)
983 0 : p2p_run_after_scan(p2p);
984 0 : }
985 :
986 :
987 6536 : static void p2p_free_req_dev_types(struct p2p_data *p2p)
988 : {
989 6536 : p2p->num_req_dev_types = 0;
990 6536 : os_free(p2p->req_dev_types);
991 6536 : p2p->req_dev_types = NULL;
992 6536 : }
993 :
994 :
995 207 : int p2p_find(struct p2p_data *p2p, unsigned int timeout,
996 : enum p2p_discovery_type type,
997 : unsigned int num_req_dev_types, const u8 *req_dev_types,
998 : const u8 *dev_id, unsigned int search_delay)
999 : {
1000 : int res;
1001 :
1002 207 : p2p_dbg(p2p, "Starting find (type=%d)", type);
1003 207 : os_get_reltime(&p2p->find_start);
1004 207 : if (p2p->p2p_scan_running) {
1005 10 : p2p_dbg(p2p, "p2p_scan is already running");
1006 : }
1007 :
1008 207 : p2p_free_req_dev_types(p2p);
1009 207 : if (req_dev_types && num_req_dev_types) {
1010 4 : p2p->req_dev_types = os_malloc(num_req_dev_types *
1011 : WPS_DEV_TYPE_LEN);
1012 4 : if (p2p->req_dev_types == NULL)
1013 0 : return -1;
1014 4 : os_memcpy(p2p->req_dev_types, req_dev_types,
1015 : num_req_dev_types * WPS_DEV_TYPE_LEN);
1016 4 : p2p->num_req_dev_types = num_req_dev_types;
1017 : }
1018 :
1019 207 : if (dev_id) {
1020 4 : os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1021 4 : p2p->find_dev_id = p2p->find_dev_id_buf;
1022 : } else
1023 203 : p2p->find_dev_id = NULL;
1024 :
1025 207 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1026 207 : p2p_clear_timeout(p2p);
1027 207 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1028 207 : p2p->find_type = type;
1029 207 : p2p_device_clear_reported(p2p);
1030 207 : p2p_set_state(p2p, P2P_SEARCH);
1031 207 : p2p->search_delay = search_delay;
1032 207 : p2p->in_search_delay = 0;
1033 207 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1034 207 : p2p->last_p2p_find_timeout = timeout;
1035 207 : if (timeout)
1036 0 : eloop_register_timeout(timeout, 0, p2p_find_timeout,
1037 : p2p, NULL);
1038 207 : switch (type) {
1039 : case P2P_FIND_START_WITH_FULL:
1040 : case P2P_FIND_PROGRESSIVE:
1041 54 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1042 : p2p->num_req_dev_types,
1043 27 : p2p->req_dev_types, dev_id,
1044 : DEV_PW_DEFAULT);
1045 27 : break;
1046 : case P2P_FIND_ONLY_SOCIAL:
1047 360 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1048 : p2p->num_req_dev_types,
1049 180 : p2p->req_dev_types, dev_id,
1050 : DEV_PW_DEFAULT);
1051 180 : break;
1052 : default:
1053 0 : return -1;
1054 : }
1055 :
1056 207 : if (res == 0) {
1057 198 : p2p_dbg(p2p, "Running p2p_scan");
1058 198 : p2p->p2p_scan_running = 1;
1059 198 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1060 198 : eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1061 : p2p, NULL);
1062 9 : } else if (p2p->p2p_scan_running) {
1063 9 : p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1064 : /* wait for the previous p2p_scan to complete */
1065 9 : res = 0; /* do not report failure */
1066 : } else {
1067 0 : p2p_dbg(p2p, "Failed to start p2p_scan");
1068 0 : p2p_set_state(p2p, P2P_IDLE);
1069 0 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1070 : }
1071 :
1072 207 : return res;
1073 : }
1074 :
1075 :
1076 6295 : void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1077 : {
1078 6295 : p2p_dbg(p2p, "Stopping find");
1079 6295 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1080 6295 : p2p_clear_timeout(p2p);
1081 6295 : if (p2p->state == P2P_SEARCH)
1082 198 : p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1083 6295 : p2p_set_state(p2p, P2P_IDLE);
1084 6295 : p2p_free_req_dev_types(p2p);
1085 6295 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1086 6295 : if (p2p->go_neg_peer)
1087 14 : p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1088 6295 : p2p->go_neg_peer = NULL;
1089 6295 : p2p->sd_peer = NULL;
1090 6295 : p2p->invite_peer = NULL;
1091 6295 : p2p_stop_listen_for_freq(p2p, freq);
1092 6295 : }
1093 :
1094 :
1095 6304 : void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1096 : {
1097 6304 : if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1098 60 : p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1099 6364 : return;
1100 : }
1101 6244 : if (p2p->in_listen) {
1102 254 : p2p->in_listen = 0;
1103 254 : p2p_clear_timeout(p2p);
1104 : }
1105 6244 : if (p2p->drv_in_listen) {
1106 : /*
1107 : * The driver may not deliver callback to p2p_listen_end()
1108 : * when the operation gets canceled, so clear the internal
1109 : * variable that is tracking driver state.
1110 : */
1111 182 : p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1112 182 : p2p->drv_in_listen = 0;
1113 : }
1114 6244 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1115 : }
1116 :
1117 :
1118 969 : void p2p_stop_listen(struct p2p_data *p2p)
1119 : {
1120 969 : if (p2p->state != P2P_LISTEN_ONLY) {
1121 968 : p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1122 1937 : return;
1123 : }
1124 :
1125 1 : p2p_stop_listen_for_freq(p2p, 0);
1126 1 : p2p_set_state(p2p, P2P_IDLE);
1127 : }
1128 :
1129 :
1130 6229 : void p2p_stop_find(struct p2p_data *p2p)
1131 : {
1132 6229 : p2p->pending_listen_freq = 0;
1133 6229 : p2p_stop_find_for_freq(p2p, 0);
1134 6229 : }
1135 :
1136 :
1137 36 : static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1138 : unsigned int force_freq,
1139 : unsigned int pref_freq, int go)
1140 : {
1141 : u8 op_class, op_channel;
1142 36 : unsigned int freq = force_freq ? force_freq : pref_freq;
1143 :
1144 36 : p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1145 : force_freq, pref_freq, go);
1146 36 : if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1147 0 : p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1148 0 : return -1;
1149 : }
1150 :
1151 36 : if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1152 0 : (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1153 : op_channel))) {
1154 0 : p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1155 : freq, op_class, op_channel);
1156 0 : return -1;
1157 : }
1158 :
1159 36 : p2p->op_reg_class = op_class;
1160 36 : p2p->op_channel = op_channel;
1161 :
1162 36 : if (force_freq) {
1163 35 : p2p->channels.reg_classes = 1;
1164 35 : p2p->channels.reg_class[0].channels = 1;
1165 35 : p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1166 35 : p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1167 : } else {
1168 1 : os_memcpy(&p2p->channels, &p2p->cfg->channels,
1169 : sizeof(struct p2p_channels));
1170 : }
1171 :
1172 36 : return 0;
1173 : }
1174 :
1175 :
1176 152 : static void p2p_prepare_channel_best(struct p2p_data *p2p)
1177 : {
1178 : u8 op_class, op_channel;
1179 152 : const int op_classes_5ghz[] = { 124, 115, 0 };
1180 152 : const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1181 152 : const int op_classes_vht[] = { 128, 0 };
1182 :
1183 152 : p2p_dbg(p2p, "Prepare channel best");
1184 :
1185 152 : if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1186 0 : p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1187 0 : p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1188 : == 0) {
1189 0 : p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1190 0 : p2p->op_reg_class = op_class;
1191 0 : p2p->op_channel = op_channel;
1192 152 : } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1193 0 : p2p_supported_freq(p2p, p2p->best_freq_5) &&
1194 0 : p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1195 : == 0) {
1196 0 : p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1197 0 : p2p->op_reg_class = op_class;
1198 0 : p2p->op_channel = op_channel;
1199 152 : } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1200 0 : p2p_supported_freq(p2p, p2p->best_freq_24) &&
1201 0 : p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1202 : &op_channel) == 0) {
1203 0 : p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1204 0 : p2p->op_reg_class = op_class;
1205 0 : p2p->op_channel = op_channel;
1206 154 : } else if (p2p->cfg->num_pref_chan > 0 &&
1207 4 : p2p_channels_includes(&p2p->cfg->channels,
1208 2 : p2p->cfg->pref_chan[0].op_class,
1209 2 : p2p->cfg->pref_chan[0].chan)) {
1210 2 : p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1211 2 : p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1212 2 : p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1213 150 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1214 : &p2p->op_reg_class, &p2p->op_channel) ==
1215 : 0) {
1216 18 : p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1217 18 : p2p->op_reg_class, p2p->op_channel);
1218 141 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1219 : &p2p->op_reg_class, &p2p->op_channel) ==
1220 : 0) {
1221 2 : p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1222 2 : p2p->op_reg_class, p2p->op_channel);
1223 140 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1224 : &p2p->op_reg_class, &p2p->op_channel) ==
1225 : 0) {
1226 0 : p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1227 0 : p2p->op_reg_class, p2p->op_channel);
1228 280 : } else if (p2p_channels_includes(&p2p->cfg->channels,
1229 140 : p2p->cfg->op_reg_class,
1230 140 : p2p->cfg->op_channel)) {
1231 137 : p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1232 137 : p2p->op_reg_class = p2p->cfg->op_reg_class;
1233 137 : p2p->op_channel = p2p->cfg->op_channel;
1234 3 : } else if (p2p_channel_random_social(&p2p->cfg->channels,
1235 : &p2p->op_reg_class,
1236 : &p2p->op_channel) == 0) {
1237 1 : p2p_dbg(p2p, "Select random available social channel %d from 2.4 GHz band as operating channel preference",
1238 1 : p2p->op_channel);
1239 : } else {
1240 : /* Select any random available channel from the first available
1241 : * operating class */
1242 2 : p2p_channel_select(&p2p->cfg->channels, NULL,
1243 : &p2p->op_reg_class,
1244 : &p2p->op_channel);
1245 4 : p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1246 4 : p2p->op_channel, p2p->op_reg_class);
1247 : }
1248 :
1249 152 : os_memcpy(&p2p->channels, &p2p->cfg->channels,
1250 : sizeof(struct p2p_channels));
1251 152 : }
1252 :
1253 :
1254 : /**
1255 : * p2p_prepare_channel - Select operating channel for GO Negotiation
1256 : * @p2p: P2P module context from p2p_init()
1257 : * @dev: Selected peer device
1258 : * @force_freq: Forced frequency in MHz or 0 if not forced
1259 : * @pref_freq: Preferred frequency in MHz or 0 if no preference
1260 : * @go: Whether the local end will be forced to be GO
1261 : * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1262 : *
1263 : * This function is used to do initial operating channel selection for GO
1264 : * Negotiation prior to having received peer information. The selected channel
1265 : * may be further optimized in p2p_reselect_channel() once the peer information
1266 : * is available.
1267 : */
1268 188 : int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1269 : unsigned int force_freq, unsigned int pref_freq, int go)
1270 : {
1271 188 : p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1272 : force_freq, pref_freq, go);
1273 188 : if (force_freq || pref_freq) {
1274 72 : if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1275 : 0)
1276 0 : return -1;
1277 : } else {
1278 152 : p2p_prepare_channel_best(p2p);
1279 : }
1280 188 : p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1281 188 : if (go)
1282 68 : p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1283 120 : else if (!force_freq)
1284 102 : p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1285 : &p2p->channels);
1286 188 : p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1287 :
1288 564 : p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1289 376 : p2p->op_reg_class, p2p->op_channel,
1290 : force_freq ? " (forced)" : "");
1291 :
1292 188 : if (force_freq)
1293 35 : dev->flags |= P2P_DEV_FORCE_FREQ;
1294 : else
1295 153 : dev->flags &= ~P2P_DEV_FORCE_FREQ;
1296 :
1297 188 : return 0;
1298 : }
1299 :
1300 :
1301 163 : static void p2p_set_dev_persistent(struct p2p_device *dev,
1302 : int persistent_group)
1303 : {
1304 163 : switch (persistent_group) {
1305 : case 0:
1306 140 : dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1307 : P2P_DEV_PREFER_PERSISTENT_RECONN);
1308 140 : break;
1309 : case 1:
1310 4 : dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1311 4 : dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1312 4 : break;
1313 : case 2:
1314 19 : dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1315 : P2P_DEV_PREFER_PERSISTENT_RECONN;
1316 19 : break;
1317 : }
1318 163 : }
1319 :
1320 :
1321 101 : int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1322 : enum p2p_wps_method wps_method,
1323 : int go_intent, const u8 *own_interface_addr,
1324 : unsigned int force_freq, int persistent_group,
1325 : const u8 *force_ssid, size_t force_ssid_len,
1326 : int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1327 : {
1328 : struct p2p_device *dev;
1329 :
1330 1313 : p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1331 : " GO Intent=%d Intended Interface Address=" MACSTR
1332 : " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1333 : "oob_pw_id=%u",
1334 1212 : MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1335 : wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1336 :
1337 101 : dev = p2p_get_device(p2p, peer_addr);
1338 101 : if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1339 0 : p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1340 0 : MAC2STR(peer_addr));
1341 0 : return -1;
1342 : }
1343 :
1344 101 : if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1345 : go_intent == 15) < 0)
1346 0 : return -1;
1347 :
1348 101 : if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1349 1 : if (!(dev->info.dev_capab &
1350 : P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1351 0 : p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1352 : " that is in a group and is not discoverable",
1353 0 : MAC2STR(peer_addr));
1354 0 : return -1;
1355 : }
1356 1 : if (dev->oper_freq <= 0) {
1357 0 : p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1358 : " with incomplete information",
1359 0 : MAC2STR(peer_addr));
1360 0 : return -1;
1361 : }
1362 :
1363 : /*
1364 : * First, try to connect directly. If the peer does not
1365 : * acknowledge frames, assume it is sleeping and use device
1366 : * discoverability via the GO at that point.
1367 : */
1368 : }
1369 :
1370 101 : p2p->ssid_set = 0;
1371 101 : if (force_ssid) {
1372 1 : wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1373 : force_ssid, force_ssid_len);
1374 1 : os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1375 1 : p2p->ssid_len = force_ssid_len;
1376 1 : p2p->ssid_set = 1;
1377 : }
1378 :
1379 101 : dev->flags &= ~P2P_DEV_NOT_YET_READY;
1380 101 : dev->flags &= ~P2P_DEV_USER_REJECTED;
1381 101 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1382 101 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1383 101 : if (pd_before_go_neg)
1384 2 : dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1385 : else {
1386 99 : dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1387 : /*
1388 : * Assign dialog token and tie breaker here to use the same
1389 : * values in each retry within the same GO Negotiation exchange.
1390 : */
1391 99 : dev->dialog_token++;
1392 99 : if (dev->dialog_token == 0)
1393 0 : dev->dialog_token = 1;
1394 99 : dev->tie_breaker = p2p->next_tie_breaker;
1395 99 : p2p->next_tie_breaker = !p2p->next_tie_breaker;
1396 : }
1397 101 : dev->connect_reqs = 0;
1398 101 : dev->go_neg_req_sent = 0;
1399 101 : dev->go_state = UNKNOWN_GO;
1400 101 : p2p_set_dev_persistent(dev, persistent_group);
1401 101 : p2p->go_intent = go_intent;
1402 101 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1403 :
1404 101 : if (p2p->state != P2P_IDLE)
1405 79 : p2p_stop_find(p2p);
1406 :
1407 101 : if (p2p->after_scan_tx) {
1408 : /*
1409 : * We need to drop the pending frame to avoid issues with the
1410 : * new GO Negotiation, e.g., when the pending frame was from a
1411 : * previous attempt at starting a GO Negotiation.
1412 : */
1413 0 : p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1414 0 : os_free(p2p->after_scan_tx);
1415 0 : p2p->after_scan_tx = NULL;
1416 : }
1417 :
1418 101 : dev->wps_method = wps_method;
1419 101 : dev->oob_pw_id = oob_pw_id;
1420 101 : dev->status = P2P_SC_SUCCESS;
1421 :
1422 101 : if (p2p->p2p_scan_running) {
1423 32 : p2p_dbg(p2p, "p2p_scan running - delay connect send");
1424 32 : p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1425 32 : os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1426 32 : return 0;
1427 : }
1428 69 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1429 :
1430 69 : return p2p_connect_send(p2p, dev);
1431 : }
1432 :
1433 :
1434 62 : int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1435 : enum p2p_wps_method wps_method,
1436 : int go_intent, const u8 *own_interface_addr,
1437 : unsigned int force_freq, int persistent_group,
1438 : const u8 *force_ssid, size_t force_ssid_len,
1439 : unsigned int pref_freq, u16 oob_pw_id)
1440 : {
1441 : struct p2p_device *dev;
1442 :
1443 806 : p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1444 : " GO Intent=%d Intended Interface Address=" MACSTR
1445 : " wps_method=%d persistent_group=%d oob_pw_id=%u",
1446 744 : MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1447 : wps_method, persistent_group, oob_pw_id);
1448 :
1449 62 : dev = p2p_get_device(p2p, peer_addr);
1450 62 : if (dev == NULL) {
1451 0 : p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1452 0 : MAC2STR(peer_addr));
1453 0 : return -1;
1454 : }
1455 :
1456 62 : if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1457 : 15) < 0)
1458 0 : return -1;
1459 :
1460 62 : p2p->ssid_set = 0;
1461 62 : if (force_ssid) {
1462 0 : wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1463 : force_ssid, force_ssid_len);
1464 0 : os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1465 0 : p2p->ssid_len = force_ssid_len;
1466 0 : p2p->ssid_set = 1;
1467 : }
1468 :
1469 62 : dev->flags &= ~P2P_DEV_NOT_YET_READY;
1470 62 : dev->flags &= ~P2P_DEV_USER_REJECTED;
1471 62 : dev->go_neg_req_sent = 0;
1472 62 : dev->go_state = UNKNOWN_GO;
1473 62 : p2p_set_dev_persistent(dev, persistent_group);
1474 62 : p2p->go_intent = go_intent;
1475 62 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1476 :
1477 62 : dev->wps_method = wps_method;
1478 62 : dev->oob_pw_id = oob_pw_id;
1479 62 : dev->status = P2P_SC_SUCCESS;
1480 :
1481 62 : return 0;
1482 : }
1483 :
1484 :
1485 19 : void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1486 : struct p2p_device *dev, struct p2p_message *msg)
1487 : {
1488 19 : os_get_reltime(&dev->last_seen);
1489 :
1490 19 : p2p_copy_wps_info(p2p, dev, 0, msg);
1491 :
1492 19 : if (msg->listen_channel) {
1493 : int freq;
1494 19 : freq = p2p_channel_to_freq(msg->listen_channel[3],
1495 19 : msg->listen_channel[4]);
1496 19 : if (freq < 0) {
1497 0 : p2p_dbg(p2p, "Unknown peer Listen channel: "
1498 : "country=%c%c(0x%02x) reg_class=%u channel=%u",
1499 0 : msg->listen_channel[0],
1500 0 : msg->listen_channel[1],
1501 0 : msg->listen_channel[2],
1502 0 : msg->listen_channel[3],
1503 0 : msg->listen_channel[4]);
1504 : } else {
1505 133 : p2p_dbg(p2p, "Update peer " MACSTR
1506 : " Listen channel: %u -> %u MHz",
1507 114 : MAC2STR(dev->info.p2p_device_addr),
1508 : dev->listen_freq, freq);
1509 19 : dev->listen_freq = freq;
1510 : }
1511 : }
1512 :
1513 19 : if (msg->wfd_subelems) {
1514 0 : wpabuf_free(dev->info.wfd_subelems);
1515 0 : dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1516 : }
1517 :
1518 19 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1519 8 : dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1520 8 : p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1521 : } else {
1522 99 : p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1523 : MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1524 : "listen_freq=%d",
1525 66 : MAC2STR(dev->info.p2p_device_addr),
1526 22 : dev->info.dev_capab, dev->info.group_capab,
1527 11 : dev->info.device_name, dev->listen_freq);
1528 : }
1529 :
1530 19 : dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1531 :
1532 19 : if (dev->flags & P2P_DEV_USER_REJECTED) {
1533 1 : p2p_dbg(p2p, "Do not report rejected device");
1534 20 : return;
1535 : }
1536 :
1537 36 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1538 18 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
1539 18 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1540 : }
1541 :
1542 :
1543 100 : void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1544 : {
1545 100 : os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1546 100 : p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1547 100 : os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1548 : p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1549 100 : *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1550 100 : }
1551 :
1552 :
1553 35 : int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1554 : {
1555 35 : p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1556 35 : p2p_random(params->passphrase, 8);
1557 35 : return 0;
1558 : }
1559 :
1560 :
1561 132 : void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1562 : {
1563 : struct p2p_go_neg_results res;
1564 132 : int go = peer->go_state == LOCAL_GO;
1565 : struct p2p_channels intersection;
1566 : int freqs;
1567 : size_t i, j;
1568 :
1569 924 : p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1570 792 : MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1571 :
1572 132 : os_memset(&res, 0, sizeof(res));
1573 132 : res.role_go = go;
1574 132 : os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1575 132 : os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1576 132 : res.wps_method = peer->wps_method;
1577 132 : if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1578 23 : if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1579 19 : res.persistent_group = 2;
1580 : else
1581 4 : res.persistent_group = 1;
1582 : }
1583 :
1584 132 : if (go) {
1585 : /* Setup AP mode for WPS provisioning */
1586 66 : res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1587 66 : p2p->op_channel);
1588 66 : os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1589 66 : res.ssid_len = p2p->ssid_len;
1590 66 : p2p_random(res.passphrase, 8);
1591 : } else {
1592 66 : res.freq = peer->oper_freq;
1593 66 : if (p2p->ssid_len) {
1594 66 : os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1595 66 : res.ssid_len = p2p->ssid_len;
1596 : }
1597 : }
1598 :
1599 132 : p2p_channels_dump(p2p, "own channels", &p2p->channels);
1600 132 : p2p_channels_dump(p2p, "peer channels", &peer->channels);
1601 132 : p2p_channels_intersect(&p2p->channels, &peer->channels,
1602 : &intersection);
1603 132 : if (go) {
1604 66 : p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1605 66 : p2p_channels_dump(p2p, "intersection after no-GO removal",
1606 : &intersection);
1607 : }
1608 132 : freqs = 0;
1609 298 : for (i = 0; i < intersection.reg_classes; i++) {
1610 166 : struct p2p_reg_class *c = &intersection.reg_class[i];
1611 166 : if (freqs + 1 == P2P_MAX_CHANNELS)
1612 0 : break;
1613 1502 : for (j = 0; j < c->channels; j++) {
1614 : int freq;
1615 1336 : if (freqs + 1 == P2P_MAX_CHANNELS)
1616 0 : break;
1617 1336 : freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1618 1336 : if (freq < 0)
1619 0 : continue;
1620 1336 : res.freq_list[freqs++] = freq;
1621 : }
1622 : }
1623 :
1624 132 : res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1625 :
1626 132 : p2p_clear_timeout(p2p);
1627 132 : p2p->ssid_set = 0;
1628 132 : peer->go_neg_req_sent = 0;
1629 132 : peer->wps_method = WPS_NOT_READY;
1630 132 : peer->oob_pw_id = 0;
1631 132 : wpabuf_free(peer->go_neg_conf);
1632 132 : peer->go_neg_conf = NULL;
1633 :
1634 132 : p2p_set_state(p2p, P2P_PROVISIONING);
1635 132 : p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1636 132 : }
1637 :
1638 :
1639 460 : static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1640 : const u8 *data, size_t len, int rx_freq)
1641 : {
1642 460 : p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1643 460 : wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1644 :
1645 460 : if (len < 1)
1646 461 : return;
1647 :
1648 459 : switch (data[0]) {
1649 : case P2P_GO_NEG_REQ:
1650 107 : p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1651 107 : break;
1652 : case P2P_GO_NEG_RESP:
1653 103 : p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1654 103 : break;
1655 : case P2P_GO_NEG_CONF:
1656 66 : p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1657 66 : break;
1658 : case P2P_INVITATION_REQ:
1659 67 : p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1660 : rx_freq);
1661 67 : break;
1662 : case P2P_INVITATION_RESP:
1663 25 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1664 25 : p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1665 25 : break;
1666 : case P2P_PROV_DISC_REQ:
1667 44 : p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1668 44 : break;
1669 : case P2P_PROV_DISC_RESP:
1670 41 : p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1671 41 : break;
1672 : case P2P_DEV_DISC_REQ:
1673 3 : p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1674 3 : break;
1675 : case P2P_DEV_DISC_RESP:
1676 3 : p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1677 3 : break;
1678 : default:
1679 0 : p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1680 0 : data[0]);
1681 0 : break;
1682 : }
1683 : }
1684 :
1685 :
1686 532 : static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1687 : const u8 *sa, const u8 *bssid, const u8 *data,
1688 : size_t len, int freq)
1689 : {
1690 532 : if (len < 1)
1691 0 : return;
1692 :
1693 532 : switch (data[0]) {
1694 : case WLAN_PA_VENDOR_SPECIFIC:
1695 460 : data++;
1696 460 : len--;
1697 460 : if (len < 4)
1698 0 : return;
1699 460 : if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1700 0 : return;
1701 :
1702 460 : data += 4;
1703 460 : len -= 4;
1704 :
1705 460 : p2p_rx_p2p_action(p2p, sa, data, len, freq);
1706 460 : break;
1707 : case WLAN_PA_GAS_INITIAL_REQ:
1708 23 : p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1709 23 : break;
1710 : case WLAN_PA_GAS_INITIAL_RESP:
1711 23 : p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1712 23 : break;
1713 : case WLAN_PA_GAS_COMEBACK_REQ:
1714 13 : p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1715 13 : break;
1716 : case WLAN_PA_GAS_COMEBACK_RESP:
1717 13 : p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1718 13 : break;
1719 : }
1720 : }
1721 :
1722 :
1723 534 : void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1724 : const u8 *bssid, u8 category,
1725 : const u8 *data, size_t len, int freq)
1726 : {
1727 534 : if (category == WLAN_ACTION_PUBLIC) {
1728 532 : p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1729 532 : return;
1730 : }
1731 :
1732 2 : if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1733 0 : return;
1734 :
1735 2 : if (len < 4)
1736 0 : return;
1737 :
1738 2 : if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1739 0 : return;
1740 2 : data += 4;
1741 2 : len -= 4;
1742 :
1743 : /* P2P action frame */
1744 2 : p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1745 2 : wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1746 :
1747 2 : if (len < 1)
1748 0 : return;
1749 2 : switch (data[0]) {
1750 : case P2P_NOA:
1751 0 : p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1752 : /* TODO */
1753 0 : break;
1754 : case P2P_PRESENCE_REQ:
1755 1 : p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1756 1 : break;
1757 : case P2P_PRESENCE_RESP:
1758 1 : p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1759 1 : break;
1760 : case P2P_GO_DISC_REQ:
1761 0 : p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1762 0 : break;
1763 : default:
1764 0 : p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1765 0 : break;
1766 : }
1767 : }
1768 :
1769 :
1770 3 : static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1771 : {
1772 3 : struct p2p_data *p2p = eloop_ctx;
1773 3 : if (p2p->go_neg_peer == NULL)
1774 3 : return;
1775 3 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1776 3 : p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1777 3 : p2p_connect_send(p2p, p2p->go_neg_peer);
1778 : }
1779 :
1780 :
1781 0 : static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1782 : {
1783 0 : struct p2p_data *p2p = eloop_ctx;
1784 0 : if (p2p->invite_peer == NULL)
1785 0 : return;
1786 0 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1787 0 : p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1788 : p2p->invite_dev_pw_id);
1789 : }
1790 :
1791 :
1792 713 : static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1793 : const u8 *ie, size_t ie_len)
1794 : {
1795 : struct p2p_message msg;
1796 : struct p2p_device *dev;
1797 :
1798 713 : os_memset(&msg, 0, sizeof(msg));
1799 713 : if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1800 : {
1801 8 : p2p_parse_free(&msg);
1802 8 : return; /* not a P2P probe */
1803 : }
1804 :
1805 1250 : if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1806 545 : os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1807 : != 0) {
1808 : /* The Probe Request is not part of P2P Device Discovery. It is
1809 : * not known whether the source address of the frame is the P2P
1810 : * Device Address or P2P Interface Address. Do not add a new
1811 : * peer entry based on this frames.
1812 : */
1813 160 : p2p_parse_free(&msg);
1814 160 : return;
1815 : }
1816 :
1817 545 : dev = p2p_get_device(p2p, addr);
1818 545 : if (dev) {
1819 407 : if (dev->country[0] == 0 && msg.listen_channel)
1820 66 : os_memcpy(dev->country, msg.listen_channel, 3);
1821 407 : os_get_reltime(&dev->last_seen);
1822 407 : p2p_parse_free(&msg);
1823 407 : return; /* already known */
1824 : }
1825 :
1826 138 : dev = p2p_create_device(p2p, addr);
1827 138 : if (dev == NULL) {
1828 0 : p2p_parse_free(&msg);
1829 0 : return;
1830 : }
1831 :
1832 138 : os_get_reltime(&dev->last_seen);
1833 138 : dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1834 :
1835 138 : if (msg.listen_channel) {
1836 138 : os_memcpy(dev->country, msg.listen_channel, 3);
1837 138 : dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1838 138 : msg.listen_channel[4]);
1839 : }
1840 :
1841 138 : p2p_copy_wps_info(p2p, dev, 1, &msg);
1842 :
1843 138 : if (msg.wfd_subelems) {
1844 3 : wpabuf_free(dev->info.wfd_subelems);
1845 3 : dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1846 : }
1847 :
1848 138 : p2p_parse_free(&msg);
1849 :
1850 1242 : p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1851 : " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1852 966 : MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1853 138 : dev->info.group_capab, dev->info.device_name,
1854 : dev->listen_freq);
1855 : }
1856 :
1857 :
1858 6 : struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1859 : const u8 *addr,
1860 : struct p2p_message *msg)
1861 : {
1862 : struct p2p_device *dev;
1863 :
1864 6 : dev = p2p_get_device(p2p, addr);
1865 6 : if (dev) {
1866 0 : os_get_reltime(&dev->last_seen);
1867 0 : return dev; /* already known */
1868 : }
1869 :
1870 6 : dev = p2p_create_device(p2p, addr);
1871 6 : if (dev == NULL)
1872 0 : return NULL;
1873 :
1874 6 : p2p_add_dev_info(p2p, addr, dev, msg);
1875 :
1876 6 : return dev;
1877 : }
1878 :
1879 :
1880 20 : static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1881 : {
1882 20 : if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1883 2 : return 1;
1884 18 : if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1885 0 : WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1886 0 : WPA_GET_BE16(&req_dev_type[6]) == 0)
1887 0 : return 1; /* Category match with wildcard OUI/sub-category */
1888 18 : return 0;
1889 : }
1890 :
1891 :
1892 20 : int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1893 : size_t num_req_dev_type)
1894 : {
1895 : size_t i;
1896 38 : for (i = 0; i < num_req_dev_type; i++) {
1897 20 : if (dev_type_match(dev_type, req_dev_type[i]))
1898 2 : return 1;
1899 : }
1900 18 : return 0;
1901 : }
1902 :
1903 :
1904 : /**
1905 : * p2p_match_dev_type - Match local device type with requested type
1906 : * @p2p: P2P module context from p2p_init()
1907 : * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1908 : * Returns: 1 on match, 0 on mismatch
1909 : *
1910 : * This function can be used to match the Requested Device Type attribute in
1911 : * WPS IE with the local device types for deciding whether to reply to a Probe
1912 : * Request frame.
1913 : */
1914 687 : int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1915 : {
1916 : struct wps_parse_attr attr;
1917 : size_t i;
1918 :
1919 687 : if (wps_parse_msg(wps, &attr))
1920 0 : return 1; /* assume no Requested Device Type attributes */
1921 :
1922 687 : if (attr.num_req_dev_type == 0)
1923 679 : return 1; /* no Requested Device Type attributes -> match */
1924 :
1925 8 : if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1926 : attr.num_req_dev_type))
1927 0 : return 1; /* Own Primary Device Type matches */
1928 :
1929 11 : for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1930 4 : if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1931 : attr.req_dev_type,
1932 : attr.num_req_dev_type))
1933 1 : return 1; /* Own Secondary Device Type matches */
1934 :
1935 : /* No matching device type found */
1936 7 : return 0;
1937 : }
1938 :
1939 :
1940 1539 : struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1941 : {
1942 : struct wpabuf *buf;
1943 : u8 *len;
1944 1539 : int pw_id = -1;
1945 1539 : size_t extra = 0;
1946 :
1947 : #ifdef CONFIG_WIFI_DISPLAY
1948 1539 : if (p2p->wfd_ie_probe_resp)
1949 11 : extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1950 : #endif /* CONFIG_WIFI_DISPLAY */
1951 :
1952 1539 : buf = wpabuf_alloc(1000 + extra);
1953 1539 : if (buf == NULL)
1954 0 : return NULL;
1955 :
1956 1539 : if (p2p->go_neg_peer) {
1957 : /* Advertise immediate availability of WPS credential */
1958 301 : pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1959 : }
1960 :
1961 1539 : if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1962 0 : p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1963 0 : wpabuf_free(buf);
1964 0 : return NULL;
1965 : }
1966 :
1967 : #ifdef CONFIG_WIFI_DISPLAY
1968 1539 : if (p2p->wfd_ie_probe_resp)
1969 11 : wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1970 : #endif /* CONFIG_WIFI_DISPLAY */
1971 :
1972 : /* P2P IE */
1973 1539 : len = p2p_buf_add_ie_hdr(buf);
1974 1539 : p2p_buf_add_capability(buf, p2p->dev_capab &
1975 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1976 1539 : if (p2p->ext_listen_interval)
1977 9 : p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1978 9 : p2p->ext_listen_interval);
1979 1539 : p2p_buf_add_device_info(buf, p2p, NULL);
1980 1539 : p2p_buf_update_ie_hdr(buf, len);
1981 :
1982 1539 : return buf;
1983 : }
1984 :
1985 :
1986 : static enum p2p_probe_req_status
1987 713 : p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1988 : const u8 *bssid, const u8 *ie, size_t ie_len)
1989 : {
1990 : struct ieee802_11_elems elems;
1991 : struct wpabuf *buf;
1992 : struct ieee80211_mgmt *resp;
1993 : struct p2p_message msg;
1994 : struct wpabuf *ies;
1995 :
1996 713 : if (!p2p->in_listen || !p2p->drv_in_listen) {
1997 : /* not in Listen state - ignore Probe Request */
1998 256 : p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
1999 : p2p->in_listen, p2p->drv_in_listen);
2000 256 : return P2P_PREQ_NOT_LISTEN;
2001 : }
2002 :
2003 457 : if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2004 : ParseFailed) {
2005 : /* Ignore invalid Probe Request frames */
2006 0 : p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2007 0 : return P2P_PREQ_MALFORMED;
2008 : }
2009 :
2010 457 : if (elems.p2p == NULL) {
2011 : /* not a P2P probe - ignore it */
2012 0 : p2p_dbg(p2p, "Not a P2P probe - ignore it");
2013 0 : return P2P_PREQ_NOT_P2P;
2014 : }
2015 :
2016 457 : if (dst && !is_broadcast_ether_addr(dst) &&
2017 0 : os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2018 : /* Not sent to the broadcast address or our P2P Device Address
2019 : */
2020 0 : p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2021 0 : MAC2STR(dst));
2022 0 : return P2P_PREQ_NOT_PROCESSED;
2023 : }
2024 :
2025 457 : if (bssid && !is_broadcast_ether_addr(bssid)) {
2026 : /* Not sent to the Wildcard BSSID */
2027 0 : p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2028 0 : MAC2STR(bssid));
2029 0 : return P2P_PREQ_NOT_PROCESSED;
2030 : }
2031 :
2032 910 : if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2033 453 : os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2034 : 0) {
2035 : /* not using P2P Wildcard SSID - ignore */
2036 4 : p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2037 4 : return P2P_PREQ_NOT_PROCESSED;
2038 : }
2039 :
2040 453 : if (supp_rates_11b_only(&elems)) {
2041 : /* Indicates support for 11b rates only */
2042 0 : p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2043 0 : return P2P_PREQ_NOT_P2P;
2044 : }
2045 :
2046 453 : os_memset(&msg, 0, sizeof(msg));
2047 453 : if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2048 : /* Could not parse P2P attributes */
2049 0 : p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2050 0 : return P2P_PREQ_NOT_P2P;
2051 : }
2052 :
2053 459 : if (msg.device_id &&
2054 6 : os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2055 : /* Device ID did not match */
2056 30 : p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2057 30 : MAC2STR(msg.device_id));
2058 5 : p2p_parse_free(&msg);
2059 5 : return P2P_PREQ_NOT_PROCESSED;
2060 : }
2061 :
2062 : /* Check Requested Device Type match */
2063 895 : if (msg.wps_attributes &&
2064 447 : !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2065 : /* No match with Requested Device Type */
2066 3 : p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2067 3 : p2p_parse_free(&msg);
2068 3 : return P2P_PREQ_NOT_PROCESSED;
2069 : }
2070 445 : p2p_parse_free(&msg);
2071 :
2072 445 : if (!p2p->cfg->send_probe_resp) {
2073 : /* Response generated elsewhere */
2074 0 : p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2075 0 : return P2P_PREQ_NOT_PROCESSED;
2076 : }
2077 :
2078 445 : p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2079 :
2080 : /*
2081 : * We do not really have a specific BSS that this frame is advertising,
2082 : * so build a frame that has some information in valid format. This is
2083 : * really only used for discovery purposes, not to learn exact BSS
2084 : * parameters.
2085 : */
2086 445 : ies = p2p_build_probe_resp_ies(p2p);
2087 445 : if (ies == NULL)
2088 0 : return P2P_PREQ_NOT_PROCESSED;
2089 :
2090 445 : buf = wpabuf_alloc(200 + wpabuf_len(ies));
2091 445 : if (buf == NULL) {
2092 0 : wpabuf_free(ies);
2093 0 : return P2P_PREQ_NOT_PROCESSED;
2094 : }
2095 :
2096 445 : resp = NULL;
2097 445 : resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2098 :
2099 445 : resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2100 : (WLAN_FC_STYPE_PROBE_RESP << 4));
2101 445 : os_memcpy(resp->da, addr, ETH_ALEN);
2102 445 : os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2103 445 : os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2104 445 : resp->u.probe_resp.beacon_int = host_to_le16(100);
2105 : /* hardware or low-level driver will setup seq_ctrl and timestamp */
2106 445 : resp->u.probe_resp.capab_info =
2107 : host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2108 : WLAN_CAPABILITY_PRIVACY |
2109 : WLAN_CAPABILITY_SHORT_SLOT_TIME);
2110 :
2111 445 : wpabuf_put_u8(buf, WLAN_EID_SSID);
2112 445 : wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2113 445 : wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2114 :
2115 445 : wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2116 445 : wpabuf_put_u8(buf, 8);
2117 445 : wpabuf_put_u8(buf, (60 / 5) | 0x80);
2118 445 : wpabuf_put_u8(buf, 90 / 5);
2119 445 : wpabuf_put_u8(buf, (120 / 5) | 0x80);
2120 445 : wpabuf_put_u8(buf, 180 / 5);
2121 445 : wpabuf_put_u8(buf, (240 / 5) | 0x80);
2122 445 : wpabuf_put_u8(buf, 360 / 5);
2123 445 : wpabuf_put_u8(buf, 480 / 5);
2124 445 : wpabuf_put_u8(buf, 540 / 5);
2125 :
2126 445 : wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2127 445 : wpabuf_put_u8(buf, 1);
2128 445 : wpabuf_put_u8(buf, p2p->cfg->channel);
2129 :
2130 445 : wpabuf_put_buf(buf, ies);
2131 445 : wpabuf_free(ies);
2132 :
2133 445 : p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2134 :
2135 445 : wpabuf_free(buf);
2136 :
2137 445 : return P2P_PREQ_NOT_PROCESSED;
2138 : }
2139 :
2140 :
2141 : enum p2p_probe_req_status
2142 713 : p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2143 : const u8 *bssid, const u8 *ie, size_t ie_len)
2144 : {
2145 : enum p2p_probe_req_status res;
2146 :
2147 713 : p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2148 :
2149 713 : res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2150 :
2151 716 : if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2152 6 : p2p->go_neg_peer &&
2153 3 : os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2154 3 : == 0 &&
2155 3 : !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2156 : /* Received a Probe Request from GO Negotiation peer */
2157 3 : p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2158 3 : eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2159 3 : eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2160 3 : return P2P_PREQ_PROCESSED;
2161 : }
2162 :
2163 710 : if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2164 0 : p2p->invite_peer &&
2165 0 : (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2166 0 : os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2167 : == 0) {
2168 : /* Received a Probe Request from Invite peer */
2169 0 : p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2170 0 : eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2171 0 : eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2172 0 : return P2P_PREQ_PROCESSED;
2173 : }
2174 :
2175 710 : return res;
2176 : }
2177 :
2178 :
2179 837 : static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2180 : u8 *buf, size_t len, struct wpabuf *p2p_ie)
2181 : {
2182 : struct wpabuf *tmp;
2183 : u8 *lpos;
2184 : size_t tmplen;
2185 : int res;
2186 : u8 group_capab;
2187 :
2188 837 : if (p2p_ie == NULL)
2189 827 : return 0; /* WLAN AP is not a P2P manager */
2190 :
2191 : /*
2192 : * (Re)Association Request - P2P IE
2193 : * P2P Capability attribute (shall be present)
2194 : * P2P Interface attribute (present if concurrent device and
2195 : * P2P Management is enabled)
2196 : */
2197 10 : tmp = wpabuf_alloc(200);
2198 10 : if (tmp == NULL)
2199 0 : return -1;
2200 :
2201 10 : lpos = p2p_buf_add_ie_hdr(tmp);
2202 10 : group_capab = 0;
2203 10 : if (p2p->num_groups > 0) {
2204 0 : group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2205 0 : if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2206 0 : (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2207 0 : p2p->cross_connect)
2208 0 : group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2209 : }
2210 10 : p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2211 20 : if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2212 10 : (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2213 0 : p2p_buf_add_p2p_interface(tmp, p2p);
2214 10 : p2p_buf_update_ie_hdr(tmp, lpos);
2215 :
2216 10 : tmplen = wpabuf_len(tmp);
2217 10 : if (tmplen > len)
2218 0 : res = -1;
2219 : else {
2220 10 : os_memcpy(buf, wpabuf_head(tmp), tmplen);
2221 10 : res = tmplen;
2222 : }
2223 10 : wpabuf_free(tmp);
2224 :
2225 10 : return res;
2226 : }
2227 :
2228 :
2229 1067 : int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2230 : size_t len, int p2p_group, struct wpabuf *p2p_ie)
2231 : {
2232 : struct wpabuf *tmp;
2233 : u8 *lpos;
2234 : struct p2p_device *peer;
2235 : size_t tmplen;
2236 : int res;
2237 1067 : size_t extra = 0;
2238 :
2239 1067 : if (!p2p_group)
2240 837 : return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2241 :
2242 : #ifdef CONFIG_WIFI_DISPLAY
2243 230 : if (p2p->wfd_ie_assoc_req)
2244 2 : extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2245 : #endif /* CONFIG_WIFI_DISPLAY */
2246 :
2247 : /*
2248 : * (Re)Association Request - P2P IE
2249 : * P2P Capability attribute (shall be present)
2250 : * Extended Listen Timing (may be present)
2251 : * P2P Device Info attribute (shall be present)
2252 : */
2253 230 : tmp = wpabuf_alloc(200 + extra);
2254 230 : if (tmp == NULL)
2255 0 : return -1;
2256 :
2257 : #ifdef CONFIG_WIFI_DISPLAY
2258 230 : if (p2p->wfd_ie_assoc_req)
2259 2 : wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2260 : #endif /* CONFIG_WIFI_DISPLAY */
2261 :
2262 230 : peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2263 :
2264 230 : lpos = p2p_buf_add_ie_hdr(tmp);
2265 230 : p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2266 230 : if (p2p->ext_listen_interval)
2267 2 : p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2268 2 : p2p->ext_listen_interval);
2269 230 : p2p_buf_add_device_info(tmp, p2p, peer);
2270 230 : p2p_buf_update_ie_hdr(tmp, lpos);
2271 :
2272 230 : tmplen = wpabuf_len(tmp);
2273 230 : if (tmplen > len)
2274 0 : res = -1;
2275 : else {
2276 230 : os_memcpy(buf, wpabuf_head(tmp), tmplen);
2277 230 : res = tmplen;
2278 : }
2279 230 : wpabuf_free(tmp);
2280 :
2281 230 : return res;
2282 : }
2283 :
2284 :
2285 158 : int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2286 : {
2287 : struct wpabuf *p2p_ie;
2288 : int ret;
2289 :
2290 158 : p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2291 158 : if (p2p_ie == NULL)
2292 154 : return 0;
2293 :
2294 4 : ret = p2p_attr_text(p2p_ie, buf, end);
2295 4 : wpabuf_free(p2p_ie);
2296 4 : return ret;
2297 : }
2298 :
2299 :
2300 140 : int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2301 : {
2302 : struct p2p_message msg;
2303 :
2304 140 : os_memset(&msg, 0, sizeof(msg));
2305 140 : if (p2p_parse_p2p_ie(p2p_ie, &msg))
2306 0 : return -1;
2307 :
2308 140 : if (msg.p2p_device_addr) {
2309 139 : os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2310 139 : return 0;
2311 1 : } else if (msg.device_id) {
2312 0 : os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2313 0 : return 0;
2314 : }
2315 1 : return -1;
2316 : }
2317 :
2318 :
2319 17 : int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2320 : {
2321 : struct wpabuf *p2p_ie;
2322 : int ret;
2323 :
2324 17 : p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2325 : P2P_IE_VENDOR_TYPE);
2326 17 : if (p2p_ie == NULL)
2327 0 : return -1;
2328 17 : ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2329 17 : wpabuf_free(p2p_ie);
2330 17 : return ret;
2331 : }
2332 :
2333 :
2334 130 : static void p2p_clear_go_neg(struct p2p_data *p2p)
2335 : {
2336 130 : p2p->go_neg_peer = NULL;
2337 130 : p2p_clear_timeout(p2p);
2338 130 : p2p_set_state(p2p, P2P_IDLE);
2339 130 : }
2340 :
2341 :
2342 161 : void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2343 : {
2344 161 : if (p2p->go_neg_peer == NULL) {
2345 35 : p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2346 35 : return; /* No pending Group Formation */
2347 : }
2348 :
2349 126 : if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2350 : 0) {
2351 0 : p2p_dbg(p2p, "Ignore WPS registration success notification for "
2352 : MACSTR " (GO Negotiation peer " MACSTR ")",
2353 0 : MAC2STR(mac_addr),
2354 0 : MAC2STR(p2p->go_neg_peer->intended_addr));
2355 0 : return; /* Ignore unexpected peer address */
2356 : }
2357 :
2358 756 : p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2359 756 : MAC2STR(mac_addr));
2360 :
2361 126 : p2p_clear_go_neg(p2p);
2362 : }
2363 :
2364 :
2365 7 : void p2p_group_formation_failed(struct p2p_data *p2p)
2366 : {
2367 7 : if (p2p->go_neg_peer == NULL) {
2368 3 : p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2369 10 : return; /* No pending Group Formation */
2370 : }
2371 :
2372 24 : p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2373 24 : MAC2STR(p2p->go_neg_peer->intended_addr));
2374 :
2375 4 : p2p_clear_go_neg(p2p);
2376 : }
2377 :
2378 :
2379 34 : struct p2p_data * p2p_init(const struct p2p_config *cfg)
2380 : {
2381 : struct p2p_data *p2p;
2382 :
2383 34 : if (cfg->max_peers < 1)
2384 0 : return NULL;
2385 :
2386 34 : p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2387 34 : if (p2p == NULL)
2388 0 : return NULL;
2389 34 : p2p->cfg = (struct p2p_config *) (p2p + 1);
2390 34 : os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2391 34 : if (cfg->dev_name)
2392 5 : p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2393 34 : if (cfg->manufacturer)
2394 0 : p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2395 34 : if (cfg->model_name)
2396 0 : p2p->cfg->model_name = os_strdup(cfg->model_name);
2397 34 : if (cfg->model_number)
2398 0 : p2p->cfg->model_number = os_strdup(cfg->model_number);
2399 34 : if (cfg->serial_number)
2400 0 : p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2401 34 : if (cfg->pref_chan) {
2402 0 : p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2403 : sizeof(struct p2p_channel));
2404 0 : if (p2p->cfg->pref_chan) {
2405 0 : os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2406 : cfg->num_pref_chan *
2407 : sizeof(struct p2p_channel));
2408 : } else
2409 0 : p2p->cfg->num_pref_chan = 0;
2410 : }
2411 :
2412 34 : p2p->min_disc_int = 1;
2413 34 : p2p->max_disc_int = 3;
2414 34 : p2p->max_disc_tu = -1;
2415 :
2416 34 : os_get_random(&p2p->next_tie_breaker, 1);
2417 34 : p2p->next_tie_breaker &= 0x01;
2418 34 : if (cfg->sd_request)
2419 34 : p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2420 34 : p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2421 34 : if (cfg->concurrent_operations)
2422 34 : p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2423 34 : p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2424 :
2425 34 : dl_list_init(&p2p->devices);
2426 :
2427 34 : eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2428 : p2p_expiration_timeout, p2p, NULL);
2429 :
2430 34 : p2p->go_timeout = 100;
2431 34 : p2p->client_timeout = 20;
2432 34 : p2p->num_p2p_sd_queries = 0;
2433 :
2434 34 : p2p_dbg(p2p, "initialized");
2435 34 : p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2436 34 : p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2437 :
2438 34 : return p2p;
2439 : }
2440 :
2441 :
2442 34 : void p2p_deinit(struct p2p_data *p2p)
2443 : {
2444 : #ifdef CONFIG_WIFI_DISPLAY
2445 34 : wpabuf_free(p2p->wfd_ie_beacon);
2446 34 : wpabuf_free(p2p->wfd_ie_probe_req);
2447 34 : wpabuf_free(p2p->wfd_ie_probe_resp);
2448 34 : wpabuf_free(p2p->wfd_ie_assoc_req);
2449 34 : wpabuf_free(p2p->wfd_ie_invitation);
2450 34 : wpabuf_free(p2p->wfd_ie_prov_disc_req);
2451 34 : wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2452 34 : wpabuf_free(p2p->wfd_ie_go_neg);
2453 34 : wpabuf_free(p2p->wfd_dev_info);
2454 34 : wpabuf_free(p2p->wfd_assoc_bssid);
2455 34 : wpabuf_free(p2p->wfd_coupled_sink_info);
2456 : #endif /* CONFIG_WIFI_DISPLAY */
2457 :
2458 34 : eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2459 34 : eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2460 34 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2461 34 : eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2462 34 : p2p_flush(p2p);
2463 34 : p2p_free_req_dev_types(p2p);
2464 34 : os_free(p2p->cfg->dev_name);
2465 34 : os_free(p2p->cfg->manufacturer);
2466 34 : os_free(p2p->cfg->model_name);
2467 34 : os_free(p2p->cfg->model_number);
2468 34 : os_free(p2p->cfg->serial_number);
2469 34 : os_free(p2p->cfg->pref_chan);
2470 34 : os_free(p2p->groups);
2471 34 : wpabuf_free(p2p->sd_resp);
2472 34 : os_free(p2p->after_scan_tx);
2473 34 : p2p_remove_wps_vendor_extensions(p2p);
2474 34 : os_free(p2p->no_go_freq.range);
2475 34 : os_free(p2p);
2476 34 : }
2477 :
2478 :
2479 1957 : void p2p_flush(struct p2p_data *p2p)
2480 : {
2481 : struct p2p_device *dev, *prev;
2482 1957 : p2p_stop_find(p2p);
2483 2298 : dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2484 : list) {
2485 341 : dl_list_del(&dev->list);
2486 341 : p2p_device_free(p2p, dev);
2487 : }
2488 1957 : p2p_free_sd_queries(p2p);
2489 1957 : os_free(p2p->after_scan_tx);
2490 1957 : p2p->after_scan_tx = NULL;
2491 1957 : }
2492 :
2493 :
2494 2 : int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2495 : {
2496 : struct p2p_device *dev;
2497 :
2498 2 : dev = p2p_get_device(p2p, addr);
2499 2 : if (dev == NULL)
2500 0 : return -1;
2501 :
2502 2 : p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2503 :
2504 2 : if (p2p->go_neg_peer == dev)
2505 2 : p2p->go_neg_peer = NULL;
2506 :
2507 2 : dev->wps_method = WPS_NOT_READY;
2508 2 : dev->oob_pw_id = 0;
2509 2 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2510 2 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2511 :
2512 : /* Check if after_scan_tx is for this peer. If so free it */
2513 2 : if (p2p->after_scan_tx &&
2514 0 : os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2515 0 : os_free(p2p->after_scan_tx);
2516 0 : p2p->after_scan_tx = NULL;
2517 : }
2518 :
2519 2 : return 0;
2520 : }
2521 :
2522 :
2523 3 : int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2524 : {
2525 3 : os_free(p2p->cfg->dev_name);
2526 3 : if (dev_name) {
2527 3 : p2p->cfg->dev_name = os_strdup(dev_name);
2528 3 : if (p2p->cfg->dev_name == NULL)
2529 0 : return -1;
2530 : } else
2531 0 : p2p->cfg->dev_name = NULL;
2532 3 : return 0;
2533 : }
2534 :
2535 :
2536 1 : int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2537 : {
2538 1 : os_free(p2p->cfg->manufacturer);
2539 1 : p2p->cfg->manufacturer = NULL;
2540 1 : if (manufacturer) {
2541 0 : p2p->cfg->manufacturer = os_strdup(manufacturer);
2542 0 : if (p2p->cfg->manufacturer == NULL)
2543 0 : return -1;
2544 : }
2545 :
2546 1 : return 0;
2547 : }
2548 :
2549 :
2550 1 : int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2551 : {
2552 1 : os_free(p2p->cfg->model_name);
2553 1 : p2p->cfg->model_name = NULL;
2554 1 : if (model_name) {
2555 0 : p2p->cfg->model_name = os_strdup(model_name);
2556 0 : if (p2p->cfg->model_name == NULL)
2557 0 : return -1;
2558 : }
2559 :
2560 1 : return 0;
2561 : }
2562 :
2563 :
2564 1 : int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2565 : {
2566 1 : os_free(p2p->cfg->model_number);
2567 1 : p2p->cfg->model_number = NULL;
2568 1 : if (model_number) {
2569 0 : p2p->cfg->model_number = os_strdup(model_number);
2570 0 : if (p2p->cfg->model_number == NULL)
2571 0 : return -1;
2572 : }
2573 :
2574 1 : return 0;
2575 : }
2576 :
2577 :
2578 1 : int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2579 : {
2580 1 : os_free(p2p->cfg->serial_number);
2581 1 : p2p->cfg->serial_number = NULL;
2582 1 : if (serial_number) {
2583 0 : p2p->cfg->serial_number = os_strdup(serial_number);
2584 0 : if (p2p->cfg->serial_number == NULL)
2585 0 : return -1;
2586 : }
2587 :
2588 1 : return 0;
2589 : }
2590 :
2591 :
2592 1 : void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2593 : {
2594 1 : p2p->cfg->config_methods = config_methods;
2595 1 : }
2596 :
2597 :
2598 1 : void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2599 : {
2600 1 : os_memcpy(p2p->cfg->uuid, uuid, 16);
2601 1 : }
2602 :
2603 :
2604 1 : int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2605 : {
2606 1 : os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2607 1 : return 0;
2608 : }
2609 :
2610 :
2611 2 : int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2612 : size_t num_dev_types)
2613 : {
2614 2 : if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2615 0 : num_dev_types = P2P_SEC_DEVICE_TYPES;
2616 2 : p2p->cfg->num_sec_dev_types = num_dev_types;
2617 2 : os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2618 2 : return 0;
2619 : }
2620 :
2621 :
2622 35 : void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2623 : {
2624 : int i;
2625 :
2626 385 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2627 350 : wpabuf_free(p2p->wps_vendor_ext[i]);
2628 350 : p2p->wps_vendor_ext[i] = NULL;
2629 : }
2630 35 : }
2631 :
2632 :
2633 0 : int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2634 : const struct wpabuf *vendor_ext)
2635 : {
2636 : int i;
2637 :
2638 0 : if (vendor_ext == NULL)
2639 0 : return -1;
2640 :
2641 0 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2642 0 : if (p2p->wps_vendor_ext[i] == NULL)
2643 0 : break;
2644 : }
2645 0 : if (i >= P2P_MAX_WPS_VENDOR_EXT)
2646 0 : return -1;
2647 :
2648 0 : p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2649 0 : if (p2p->wps_vendor_ext[i] == NULL)
2650 0 : return -1;
2651 :
2652 0 : return 0;
2653 : }
2654 :
2655 :
2656 2 : int p2p_set_country(struct p2p_data *p2p, const char *country)
2657 : {
2658 2 : os_memcpy(p2p->cfg->country, country, 3);
2659 2 : return 0;
2660 : }
2661 :
2662 :
2663 565 : void p2p_continue_find(struct p2p_data *p2p)
2664 : {
2665 : struct p2p_device *dev;
2666 565 : p2p_set_state(p2p, P2P_SEARCH);
2667 1106 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2668 567 : if (dev->sd_pending_bcast_queries == 0) {
2669 : /* Initialize with total number of registered broadcast
2670 : * SD queries. */
2671 516 : dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2672 : }
2673 :
2674 567 : if (p2p_start_sd(p2p, dev) == 0)
2675 23 : return;
2676 547 : if (dev->req_config_methods &&
2677 3 : !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2678 21 : p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2679 : MACSTR " (config methods 0x%x)",
2680 18 : MAC2STR(dev->info.p2p_device_addr),
2681 3 : dev->req_config_methods);
2682 3 : if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2683 3 : return;
2684 : }
2685 : }
2686 :
2687 539 : p2p_listen_in_find(p2p, 1);
2688 : }
2689 :
2690 :
2691 23 : static void p2p_sd_cb(struct p2p_data *p2p, int success)
2692 : {
2693 23 : p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2694 : success);
2695 23 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2696 :
2697 23 : if (!success) {
2698 0 : p2p->sd_peer = NULL;
2699 0 : p2p_continue_find(p2p);
2700 0 : return;
2701 : }
2702 :
2703 23 : if (p2p->sd_peer == NULL) {
2704 0 : p2p_dbg(p2p, "No SD peer entry known");
2705 0 : p2p_continue_find(p2p);
2706 0 : return;
2707 : }
2708 :
2709 : /* Wait for response from the peer */
2710 23 : p2p_set_state(p2p, P2P_SD_DURING_FIND);
2711 23 : p2p_set_timeout(p2p, 0, 200000);
2712 : }
2713 :
2714 :
2715 : /**
2716 : * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2717 : * @p2p: P2P module context from p2p_init()
2718 : */
2719 123 : static void p2p_retry_pd(struct p2p_data *p2p)
2720 : {
2721 : struct p2p_device *dev;
2722 :
2723 123 : if (p2p->state != P2P_IDLE)
2724 3 : return;
2725 :
2726 : /*
2727 : * Retry the prov disc req attempt only for the peer that the user had
2728 : * requested.
2729 : */
2730 :
2731 120 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2732 120 : if (os_memcmp(p2p->pending_pd_devaddr,
2733 : dev->info.p2p_device_addr, ETH_ALEN) != 0)
2734 0 : continue;
2735 120 : if (!dev->req_config_methods)
2736 0 : continue;
2737 :
2738 840 : p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2739 : MACSTR " (config methods 0x%x)",
2740 720 : MAC2STR(dev->info.p2p_device_addr),
2741 120 : dev->req_config_methods);
2742 240 : p2p_send_prov_disc_req(p2p, dev,
2743 120 : dev->flags & P2P_DEV_PD_FOR_JOIN,
2744 : p2p->pd_force_freq);
2745 120 : return;
2746 : }
2747 : }
2748 :
2749 :
2750 164 : static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2751 : {
2752 164 : p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2753 : success);
2754 :
2755 : /*
2756 : * Postpone resetting the pending action state till after we actually
2757 : * time out. This allows us to take some action like notifying any
2758 : * interested parties about no response to the request.
2759 : *
2760 : * When the timer (below) goes off we check in IDLE, SEARCH, or
2761 : * LISTEN_ONLY state, which are the only allowed states to issue a PD
2762 : * requests in, if this was still pending and then raise notification.
2763 : */
2764 :
2765 164 : if (!success) {
2766 124 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2767 :
2768 248 : if (p2p->user_initiated_pd &&
2769 245 : (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2770 : {
2771 : /* Retry request from timeout to avoid busy loops */
2772 3 : p2p->pending_action_state = P2P_PENDING_PD;
2773 3 : p2p_set_timeout(p2p, 0, 50000);
2774 121 : } else if (p2p->state != P2P_IDLE)
2775 0 : p2p_continue_find(p2p);
2776 121 : else if (p2p->user_initiated_pd) {
2777 121 : p2p->pending_action_state = P2P_PENDING_PD;
2778 121 : p2p_set_timeout(p2p, 0, 300000);
2779 : }
2780 288 : return;
2781 : }
2782 :
2783 : /*
2784 : * This postponing, of resetting pending_action_state, needs to be
2785 : * done only for user initiated PD requests and not internal ones.
2786 : */
2787 40 : if (p2p->user_initiated_pd)
2788 39 : p2p->pending_action_state = P2P_PENDING_PD;
2789 : else
2790 1 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2791 :
2792 : /* Wait for response from the peer */
2793 40 : if (p2p->state == P2P_SEARCH)
2794 3 : p2p_set_state(p2p, P2P_PD_DURING_FIND);
2795 40 : p2p_set_timeout(p2p, 0, 200000);
2796 : }
2797 :
2798 :
2799 1353 : int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2800 : struct os_reltime *rx_time, int level, const u8 *ies,
2801 : size_t ies_len)
2802 : {
2803 1353 : if (os_reltime_before(rx_time, &p2p->find_start)) {
2804 : /*
2805 : * The driver may have cached (e.g., in cfg80211 BSS table) the
2806 : * scan results for relatively long time. To avoid reporting
2807 : * stale information, update P2P peers only based on results
2808 : * that have based on frames received after the last p2p_find
2809 : * operation was started.
2810 : */
2811 5480 : p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2812 : " (rx_time=%u.%06u)",
2813 4795 : MAC2STR(bssid), (unsigned int) rx_time->sec,
2814 685 : (unsigned int) rx_time->usec);
2815 685 : return 0;
2816 : }
2817 :
2818 668 : p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2819 :
2820 668 : return 0;
2821 : }
2822 :
2823 :
2824 648 : void p2p_scan_res_handled(struct p2p_data *p2p)
2825 : {
2826 648 : if (!p2p->p2p_scan_running) {
2827 35 : p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2828 : }
2829 648 : p2p->p2p_scan_running = 0;
2830 648 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2831 :
2832 648 : if (p2p_run_after_scan(p2p))
2833 706 : return;
2834 590 : if (p2p->state == P2P_SEARCH)
2835 539 : p2p_continue_find(p2p);
2836 : }
2837 :
2838 :
2839 1836 : void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2840 : {
2841 : u8 *len;
2842 :
2843 : #ifdef CONFIG_WIFI_DISPLAY
2844 1836 : if (p2p->wfd_ie_probe_req)
2845 11 : wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2846 : #endif /* CONFIG_WIFI_DISPLAY */
2847 :
2848 1836 : len = p2p_buf_add_ie_hdr(ies);
2849 1836 : p2p_buf_add_capability(ies, p2p->dev_capab &
2850 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2851 1836 : if (dev_id)
2852 7 : p2p_buf_add_device_id(ies, dev_id);
2853 1836 : if (p2p->cfg->reg_class && p2p->cfg->channel)
2854 3672 : p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2855 1836 : p2p->cfg->reg_class,
2856 1836 : p2p->cfg->channel);
2857 1836 : if (p2p->ext_listen_interval)
2858 5 : p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2859 5 : p2p->ext_listen_interval);
2860 : /* TODO: p2p_buf_add_operating_channel() if GO */
2861 1836 : p2p_buf_update_ie_hdr(ies, len);
2862 1836 : }
2863 :
2864 :
2865 1837 : size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2866 : {
2867 1837 : size_t len = 100;
2868 :
2869 : #ifdef CONFIG_WIFI_DISPLAY
2870 1837 : if (p2p && p2p->wfd_ie_probe_req)
2871 11 : len += wpabuf_len(p2p->wfd_ie_probe_req);
2872 : #endif /* CONFIG_WIFI_DISPLAY */
2873 :
2874 1837 : return len;
2875 : }
2876 :
2877 :
2878 0 : int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2879 : {
2880 0 : return p2p_attr_text(p2p_ie, buf, end);
2881 : }
2882 :
2883 :
2884 121 : static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2885 : {
2886 121 : struct p2p_device *dev = p2p->go_neg_peer;
2887 : int timeout;
2888 :
2889 121 : p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2890 :
2891 121 : if (dev == NULL) {
2892 0 : p2p_dbg(p2p, "No pending GO Negotiation");
2893 0 : return;
2894 : }
2895 :
2896 121 : if (success) {
2897 107 : if (dev->flags & P2P_DEV_USER_REJECTED) {
2898 0 : p2p_set_state(p2p, P2P_IDLE);
2899 0 : return;
2900 : }
2901 14 : } else if (dev->go_neg_req_sent) {
2902 : /* Cancel the increment from p2p_connect_send() on failure */
2903 14 : dev->go_neg_req_sent--;
2904 : }
2905 :
2906 135 : if (!success &&
2907 17 : (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2908 3 : !is_zero_ether_addr(dev->member_in_go_dev)) {
2909 18 : p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2910 18 : MAC2STR(dev->info.p2p_device_addr));
2911 3 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2912 3 : p2p_send_dev_disc_req(p2p, dev);
2913 3 : return;
2914 : }
2915 :
2916 : /*
2917 : * Use P2P find, if needed, to find the other device from its listen
2918 : * channel.
2919 : */
2920 118 : p2p_set_state(p2p, P2P_CONNECT);
2921 118 : timeout = success ? 500000 : 100000;
2922 129 : if (!success && p2p->go_neg_peer &&
2923 11 : (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2924 : unsigned int r;
2925 : /*
2926 : * Peer is expected to wait our response and we will skip the
2927 : * listen phase. Add some randomness to the wait time here to
2928 : * make it less likely to hit cases where we could end up in
2929 : * sync with peer not listening.
2930 : */
2931 3 : os_get_random((u8 *) &r, sizeof(r));
2932 3 : timeout += r % 100000;
2933 : }
2934 118 : p2p_set_timeout(p2p, 0, timeout);
2935 : }
2936 :
2937 :
2938 66 : static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2939 : {
2940 66 : p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2941 : success);
2942 66 : if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2943 0 : p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2944 66 : return;
2945 : }
2946 66 : p2p_set_state(p2p, P2P_CONNECT);
2947 66 : p2p_set_timeout(p2p, 0, 500000);
2948 : }
2949 :
2950 :
2951 35 : static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2952 : const u8 *addr)
2953 : {
2954 35 : p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2955 35 : if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2956 0 : p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2957 0 : p2p->go_neg_peer->status);
2958 35 : } else if (success) {
2959 : struct p2p_device *dev;
2960 35 : dev = p2p_get_device(p2p, addr);
2961 63 : if (dev &&
2962 28 : dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2963 13 : dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2964 : }
2965 35 : }
2966 :
2967 :
2968 66 : static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2969 : enum p2p_send_action_result result)
2970 : {
2971 : struct p2p_device *dev;
2972 :
2973 66 : p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2974 66 : if (result == P2P_SEND_ACTION_FAILED) {
2975 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2976 0 : p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2977 0 : return;
2978 : }
2979 :
2980 66 : dev = p2p->go_neg_peer;
2981 :
2982 66 : if (result == P2P_SEND_ACTION_NO_ACK) {
2983 : /*
2984 : * Retry GO Negotiation Confirmation
2985 : * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
2986 : * ACK for confirmation.
2987 : */
2988 0 : if (dev && dev->go_neg_conf &&
2989 0 : dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
2990 0 : p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
2991 0 : dev->go_neg_conf_sent);
2992 0 : p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
2993 0 : if (p2p_send_action(p2p, dev->go_neg_conf_freq,
2994 0 : dev->info.p2p_device_addr,
2995 0 : p2p->cfg->dev_addr,
2996 0 : dev->info.p2p_device_addr,
2997 0 : wpabuf_head(dev->go_neg_conf),
2998 0 : wpabuf_len(dev->go_neg_conf), 0) >=
2999 : 0) {
3000 0 : dev->go_neg_conf_sent++;
3001 0 : return;
3002 : }
3003 0 : p2p_dbg(p2p, "Failed to re-send Action frame");
3004 :
3005 : /*
3006 : * Continue with the assumption that the first attempt
3007 : * went through and just the ACK frame was lost.
3008 : */
3009 : }
3010 :
3011 : /*
3012 : * It looks like the TX status for GO Negotiation Confirm is
3013 : * often showing failure even when the peer has actually
3014 : * received the frame. Since the peer may change channels
3015 : * immediately after having received the frame, we may not see
3016 : * an Ack for retries, so just dropping a single frame may
3017 : * trigger this. To allow the group formation to succeed if the
3018 : * peer did indeed receive the frame, continue regardless of
3019 : * the TX status.
3020 : */
3021 0 : p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3022 : }
3023 :
3024 66 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3025 :
3026 66 : if (dev == NULL)
3027 0 : return;
3028 :
3029 66 : p2p_go_complete(p2p, dev);
3030 : }
3031 :
3032 :
3033 647 : void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3034 : const u8 *src, const u8 *bssid,
3035 : enum p2p_send_action_result result)
3036 : {
3037 : enum p2p_pending_action_state state;
3038 : int success;
3039 :
3040 12293 : p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3041 : " src=" MACSTR " bssid=" MACSTR " result=%d",
3042 8411 : p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3043 3882 : MAC2STR(bssid), result);
3044 647 : success = result == P2P_SEND_ACTION_SUCCESS;
3045 647 : state = p2p->pending_action_state;
3046 647 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3047 647 : switch (state) {
3048 : case P2P_NO_PENDING_ACTION:
3049 103 : if (p2p->send_action_in_progress) {
3050 43 : p2p->send_action_in_progress = 0;
3051 43 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3052 : }
3053 103 : if (p2p->after_scan_tx_in_progress) {
3054 0 : p2p->after_scan_tx_in_progress = 0;
3055 0 : if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3056 0 : p2p_run_after_scan(p2p))
3057 0 : break;
3058 0 : if (p2p->state == P2P_SEARCH) {
3059 0 : p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3060 0 : p2p_continue_find(p2p);
3061 : }
3062 : }
3063 103 : break;
3064 : case P2P_PENDING_GO_NEG_REQUEST:
3065 121 : p2p_go_neg_req_cb(p2p, success);
3066 121 : break;
3067 : case P2P_PENDING_GO_NEG_RESPONSE:
3068 66 : p2p_go_neg_resp_cb(p2p, success);
3069 66 : break;
3070 : case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3071 35 : p2p_go_neg_resp_failure_cb(p2p, success, dst);
3072 35 : break;
3073 : case P2P_PENDING_GO_NEG_CONFIRM:
3074 66 : p2p_go_neg_conf_cb(p2p, result);
3075 66 : break;
3076 : case P2P_PENDING_SD:
3077 23 : p2p_sd_cb(p2p, success);
3078 23 : break;
3079 : case P2P_PENDING_PD:
3080 164 : p2p_prov_disc_cb(p2p, success);
3081 164 : break;
3082 : case P2P_PENDING_INVITATION_REQUEST:
3083 26 : p2p_invitation_req_cb(p2p, success);
3084 26 : break;
3085 : case P2P_PENDING_INVITATION_RESPONSE:
3086 37 : p2p_invitation_resp_cb(p2p, success);
3087 37 : break;
3088 : case P2P_PENDING_DEV_DISC_REQUEST:
3089 3 : p2p_dev_disc_req_cb(p2p, success);
3090 3 : break;
3091 : case P2P_PENDING_DEV_DISC_RESPONSE:
3092 3 : p2p_dev_disc_resp_cb(p2p, success);
3093 3 : break;
3094 : case P2P_PENDING_GO_DISC_REQ:
3095 0 : p2p_go_disc_req_cb(p2p, success);
3096 0 : break;
3097 : }
3098 :
3099 647 : p2p->after_scan_tx_in_progress = 0;
3100 647 : }
3101 :
3102 :
3103 1091 : void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3104 : unsigned int duration)
3105 : {
3106 1091 : if (freq == p2p->pending_client_disc_freq) {
3107 0 : p2p_dbg(p2p, "Client discoverability remain-awake completed");
3108 0 : p2p->pending_client_disc_freq = 0;
3109 0 : return;
3110 : }
3111 :
3112 1091 : if (freq != p2p->pending_listen_freq) {
3113 12 : p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3114 : freq, duration, p2p->pending_listen_freq);
3115 12 : return;
3116 : }
3117 :
3118 1079 : p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3119 : p2p->pending_listen_sec, p2p->pending_listen_usec,
3120 : p2p->pending_listen_freq);
3121 1079 : p2p->in_listen = 1;
3122 1079 : p2p->drv_in_listen = freq;
3123 1079 : if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3124 : /*
3125 : * Add 20 msec extra wait to avoid race condition with driver
3126 : * remain-on-channel end event, i.e., give driver more time to
3127 : * complete the operation before our timeout expires.
3128 : */
3129 1079 : p2p_set_timeout(p2p, p2p->pending_listen_sec,
3130 1079 : p2p->pending_listen_usec + 20000);
3131 : }
3132 :
3133 1079 : p2p->pending_listen_freq = 0;
3134 : }
3135 :
3136 :
3137 1064 : int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3138 : {
3139 1064 : p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3140 1064 : p2p->drv_in_listen = 0;
3141 1064 : if (p2p->in_listen)
3142 896 : return 0; /* Internal timeout will trigger the next step */
3143 :
3144 168 : if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3145 0 : if (p2p->go_neg_peer->connect_reqs >= 120) {
3146 0 : p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3147 0 : p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3148 0 : return 0;
3149 : }
3150 :
3151 0 : p2p_set_state(p2p, P2P_CONNECT);
3152 0 : p2p_connect_send(p2p, p2p->go_neg_peer);
3153 0 : return 1;
3154 168 : } else if (p2p->state == P2P_SEARCH) {
3155 0 : if (p2p->p2p_scan_running) {
3156 : /*
3157 : * Search is already in progress. This can happen if
3158 : * an Action frame RX is reported immediately after
3159 : * the end of a remain-on-channel operation and the
3160 : * response frame to that is sent using an offchannel
3161 : * operation while in p2p_find. Avoid an attempt to
3162 : * restart a scan here.
3163 : */
3164 0 : p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3165 0 : return 1;
3166 : }
3167 0 : if (p2p->pending_listen_freq) {
3168 : /*
3169 : * Better wait a bit if the driver is unable to start
3170 : * offchannel operation for some reason. p2p_search()
3171 : * will be started from internal timeout.
3172 : */
3173 0 : p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3174 0 : p2p_set_timeout(p2p, 0, 100000);
3175 0 : return 1;
3176 : }
3177 0 : if (p2p->search_delay) {
3178 0 : p2p_dbg(p2p, "Delay search operation by %u ms",
3179 : p2p->search_delay);
3180 0 : p2p_set_timeout(p2p, p2p->search_delay / 1000,
3181 0 : (p2p->search_delay % 1000) * 1000);
3182 0 : return 1;
3183 : }
3184 0 : p2p_search(p2p);
3185 0 : return 1;
3186 : }
3187 :
3188 168 : return 0;
3189 : }
3190 :
3191 :
3192 19 : static void p2p_timeout_connect(struct p2p_data *p2p)
3193 : {
3194 19 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3195 38 : if (p2p->go_neg_peer &&
3196 19 : (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3197 0 : p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3198 0 : p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3199 0 : return;
3200 : }
3201 38 : if (p2p->go_neg_peer &&
3202 22 : (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3203 3 : p2p->go_neg_peer->connect_reqs < 120) {
3204 3 : p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3205 3 : p2p_connect_send(p2p, p2p->go_neg_peer);
3206 3 : return;
3207 : }
3208 16 : if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3209 0 : p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3210 0 : p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3211 0 : p2p_set_timeout(p2p, 0, 30000);
3212 0 : return;
3213 : }
3214 16 : p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3215 16 : p2p_listen_in_find(p2p, 0);
3216 : }
3217 :
3218 :
3219 14 : static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3220 : {
3221 14 : if (p2p->go_neg_peer) {
3222 14 : if (p2p->drv_in_listen) {
3223 0 : p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3224 0 : return;
3225 : }
3226 :
3227 14 : if (p2p->go_neg_peer->connect_reqs >= 120) {
3228 0 : p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3229 0 : p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3230 0 : return;
3231 : }
3232 :
3233 14 : p2p_set_state(p2p, P2P_CONNECT);
3234 14 : p2p_connect_send(p2p, p2p->go_neg_peer);
3235 : } else
3236 0 : p2p_set_state(p2p, P2P_IDLE);
3237 : }
3238 :
3239 :
3240 272 : static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3241 : {
3242 272 : p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3243 :
3244 544 : if (p2p->cfg->is_concurrent_session_active &&
3245 272 : p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3246 0 : p2p_set_timeout(p2p, 0, 500000);
3247 : else
3248 272 : p2p_set_timeout(p2p, 0, 200000);
3249 272 : }
3250 :
3251 :
3252 284 : static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3253 : {
3254 284 : struct p2p_device *dev = p2p->go_neg_peer;
3255 : struct os_reltime now;
3256 :
3257 284 : if (dev == NULL) {
3258 0 : p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3259 0 : return;
3260 : }
3261 :
3262 284 : os_get_reltime(&now);
3263 284 : if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
3264 1 : p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3265 1 : p2p_go_neg_failed(p2p, dev, -1);
3266 1 : return;
3267 : }
3268 :
3269 283 : p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3270 283 : p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3271 283 : p2p_listen_in_find(p2p, 0);
3272 : }
3273 :
3274 :
3275 0 : static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3276 : {
3277 0 : p2p_dbg(p2p, "Service Discovery Query timeout");
3278 0 : if (p2p->sd_peer) {
3279 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3280 0 : p2p->sd_peer = NULL;
3281 : }
3282 0 : p2p_continue_find(p2p);
3283 0 : }
3284 :
3285 :
3286 0 : static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3287 : {
3288 0 : p2p_dbg(p2p, "Provision Discovery Request timeout");
3289 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3290 0 : p2p_continue_find(p2p);
3291 0 : }
3292 :
3293 :
3294 124 : static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3295 : {
3296 124 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3297 :
3298 : /*
3299 : * For user initiated PD requests that we have not gotten any responses
3300 : * for while in IDLE state, we retry them a couple of times before
3301 : * giving up.
3302 : */
3303 124 : if (!p2p->user_initiated_pd)
3304 124 : return;
3305 :
3306 124 : p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3307 :
3308 124 : if (p2p->pd_retries) {
3309 123 : p2p->pd_retries--;
3310 123 : p2p_retry_pd(p2p);
3311 : } else {
3312 : struct p2p_device *dev;
3313 1 : int for_join = 0;
3314 :
3315 2 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3316 1 : if (os_memcmp(p2p->pending_pd_devaddr,
3317 : dev->info.p2p_device_addr, ETH_ALEN) != 0)
3318 0 : continue;
3319 2 : if (dev->req_config_methods &&
3320 1 : (dev->flags & P2P_DEV_PD_FOR_JOIN))
3321 0 : for_join = 1;
3322 : }
3323 :
3324 1 : if (p2p->cfg->prov_disc_fail)
3325 2 : p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3326 1 : p2p->pending_pd_devaddr,
3327 : for_join ?
3328 : P2P_PROV_DISC_TIMEOUT_JOIN :
3329 : P2P_PROV_DISC_TIMEOUT);
3330 1 : p2p_reset_pending_pd(p2p);
3331 : }
3332 : }
3333 :
3334 :
3335 1 : static void p2p_timeout_invite(struct p2p_data *p2p)
3336 : {
3337 1 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3338 1 : p2p_set_state(p2p, P2P_INVITE_LISTEN);
3339 1 : if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3340 : /*
3341 : * Better remain on operating channel instead of listen channel
3342 : * when running a group.
3343 : */
3344 1 : p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3345 1 : p2p_set_timeout(p2p, 0, 100000);
3346 2 : return;
3347 : }
3348 0 : p2p_listen_in_find(p2p, 0);
3349 : }
3350 :
3351 :
3352 1 : static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3353 : {
3354 1 : if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3355 1 : p2p_set_state(p2p, P2P_INVITE);
3356 1 : p2p_invite_send(p2p, p2p->invite_peer,
3357 : p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3358 : } else {
3359 0 : if (p2p->invite_peer) {
3360 0 : p2p_dbg(p2p, "Invitation Request retry limit reached");
3361 0 : if (p2p->cfg->invitation_result)
3362 0 : p2p->cfg->invitation_result(
3363 0 : p2p->cfg->cb_ctx, -1, NULL, NULL,
3364 0 : p2p->invite_peer->info.p2p_device_addr,
3365 : 0, 0);
3366 : }
3367 0 : p2p_set_state(p2p, P2P_IDLE);
3368 : }
3369 1 : }
3370 :
3371 :
3372 1169 : static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3373 : {
3374 1169 : struct p2p_data *p2p = eloop_ctx;
3375 :
3376 1169 : p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3377 :
3378 1169 : p2p->in_listen = 0;
3379 :
3380 1169 : switch (p2p->state) {
3381 : case P2P_IDLE:
3382 : /* Check if we timed out waiting for PD req */
3383 154 : if (p2p->pending_action_state == P2P_PENDING_PD)
3384 121 : p2p_timeout_prov_disc_req(p2p);
3385 154 : break;
3386 : case P2P_SEARCH:
3387 : /* Check if we timed out waiting for PD req */
3388 422 : if (p2p->pending_action_state == P2P_PENDING_PD)
3389 3 : p2p_timeout_prov_disc_req(p2p);
3390 422 : if (p2p->search_delay && !p2p->in_search_delay) {
3391 6 : p2p_dbg(p2p, "Delay search operation by %u ms",
3392 : p2p->search_delay);
3393 6 : p2p->in_search_delay = 1;
3394 6 : p2p_set_timeout(p2p, p2p->search_delay / 1000,
3395 6 : (p2p->search_delay % 1000) * 1000);
3396 6 : break;
3397 : }
3398 416 : p2p->in_search_delay = 0;
3399 416 : p2p_search(p2p);
3400 416 : break;
3401 : case P2P_CONNECT:
3402 19 : p2p_timeout_connect(p2p);
3403 19 : break;
3404 : case P2P_CONNECT_LISTEN:
3405 14 : p2p_timeout_connect_listen(p2p);
3406 14 : break;
3407 : case P2P_GO_NEG:
3408 0 : break;
3409 : case P2P_LISTEN_ONLY:
3410 : /* Check if we timed out waiting for PD req */
3411 2 : if (p2p->pending_action_state == P2P_PENDING_PD)
3412 0 : p2p_timeout_prov_disc_req(p2p);
3413 :
3414 2 : if (p2p->ext_listen_only) {
3415 0 : p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3416 0 : p2p->ext_listen_only = 0;
3417 0 : p2p_set_state(p2p, P2P_IDLE);
3418 : }
3419 2 : break;
3420 : case P2P_WAIT_PEER_CONNECT:
3421 272 : p2p_timeout_wait_peer_connect(p2p);
3422 272 : break;
3423 : case P2P_WAIT_PEER_IDLE:
3424 284 : p2p_timeout_wait_peer_idle(p2p);
3425 284 : break;
3426 : case P2P_SD_DURING_FIND:
3427 0 : p2p_timeout_sd_during_find(p2p);
3428 0 : break;
3429 : case P2P_PROVISIONING:
3430 0 : break;
3431 : case P2P_PD_DURING_FIND:
3432 0 : p2p_timeout_prov_disc_during_find(p2p);
3433 0 : break;
3434 : case P2P_INVITE:
3435 1 : p2p_timeout_invite(p2p);
3436 1 : break;
3437 : case P2P_INVITE_LISTEN:
3438 1 : p2p_timeout_invite_listen(p2p);
3439 1 : break;
3440 : }
3441 1169 : }
3442 :
3443 :
3444 2 : int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3445 : {
3446 : struct p2p_device *dev;
3447 :
3448 2 : dev = p2p_get_device(p2p, peer_addr);
3449 12 : p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3450 12 : MACSTR, MAC2STR(peer_addr));
3451 2 : if (dev == NULL) {
3452 0 : p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3453 0 : return -1;
3454 : }
3455 2 : dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3456 2 : dev->flags |= P2P_DEV_USER_REJECTED;
3457 2 : return 0;
3458 : }
3459 :
3460 :
3461 458 : const char * p2p_wps_method_text(enum p2p_wps_method method)
3462 : {
3463 458 : switch (method) {
3464 : case WPS_NOT_READY:
3465 325 : return "not-ready";
3466 : case WPS_PIN_DISPLAY:
3467 50 : return "Display";
3468 : case WPS_PIN_KEYPAD:
3469 50 : return "Keypad";
3470 : case WPS_PBC:
3471 17 : return "PBC";
3472 : case WPS_NFC:
3473 16 : return "NFC";
3474 : }
3475 :
3476 0 : return "??";
3477 : }
3478 :
3479 :
3480 326 : static const char * p2p_go_state_text(enum p2p_go_state go_state)
3481 : {
3482 326 : switch (go_state) {
3483 : case UNKNOWN_GO:
3484 278 : return "unknown";
3485 : case LOCAL_GO:
3486 24 : return "local";
3487 : case REMOTE_GO:
3488 24 : return "remote";
3489 : }
3490 :
3491 0 : return "??";
3492 : }
3493 :
3494 :
3495 465 : const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3496 : const u8 *addr, int next)
3497 : {
3498 : struct p2p_device *dev;
3499 :
3500 465 : if (addr)
3501 465 : dev = p2p_get_device(p2p, addr);
3502 : else
3503 0 : dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3504 :
3505 465 : if (dev && next) {
3506 0 : dev = dl_list_first(&dev->list, struct p2p_device, list);
3507 0 : if (&dev->list == &p2p->devices)
3508 0 : dev = NULL;
3509 : }
3510 :
3511 465 : if (dev == NULL)
3512 139 : return NULL;
3513 :
3514 326 : return &dev->info;
3515 : }
3516 :
3517 :
3518 326 : int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3519 : char *buf, size_t buflen)
3520 : {
3521 : struct p2p_device *dev;
3522 : int res;
3523 : char *pos, *end;
3524 : struct os_reltime now;
3525 :
3526 326 : if (info == NULL)
3527 0 : return -1;
3528 :
3529 326 : dev = (struct p2p_device *) (((u8 *) info) -
3530 : offsetof(struct p2p_device, info));
3531 :
3532 326 : pos = buf;
3533 326 : end = buf + buflen;
3534 :
3535 326 : os_get_reltime(&now);
3536 14720 : res = os_snprintf(pos, end - pos,
3537 : "age=%d\n"
3538 : "listen_freq=%d\n"
3539 : "wps_method=%s\n"
3540 : "interface_addr=" MACSTR "\n"
3541 : "member_in_go_dev=" MACSTR "\n"
3542 : "member_in_go_iface=" MACSTR "\n"
3543 : "go_neg_req_sent=%d\n"
3544 : "go_state=%s\n"
3545 : "dialog_token=%u\n"
3546 : "intended_addr=" MACSTR "\n"
3547 : "country=%c%c\n"
3548 : "oper_freq=%d\n"
3549 : "req_config_methods=0x%x\n"
3550 : "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3551 : "status=%d\n"
3552 : "invitation_reqs=%u\n",
3553 652 : (int) (now.sec - dev->last_seen.sec),
3554 : dev->listen_freq,
3555 : p2p_wps_method_text(dev->wps_method),
3556 1956 : MAC2STR(dev->interface_addr),
3557 1956 : MAC2STR(dev->member_in_go_dev),
3558 1956 : MAC2STR(dev->member_in_go_iface),
3559 : dev->go_neg_req_sent,
3560 : p2p_go_state_text(dev->go_state),
3561 326 : dev->dialog_token,
3562 1956 : MAC2STR(dev->intended_addr),
3563 514 : dev->country[0] ? dev->country[0] : '_',
3564 514 : dev->country[1] ? dev->country[1] : '_',
3565 : dev->oper_freq,
3566 326 : dev->req_config_methods,
3567 326 : dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3568 : "[PROBE_REQ_ONLY]" : "",
3569 326 : dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3570 326 : dev->flags & P2P_DEV_NOT_YET_READY ?
3571 : "[NOT_YET_READY]" : "",
3572 326 : dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3573 : "[PD_PEER_DISPLAY]" : "",
3574 326 : dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3575 : "[PD_PEER_KEYPAD]" : "",
3576 326 : dev->flags & P2P_DEV_USER_REJECTED ?
3577 : "[USER_REJECTED]" : "",
3578 326 : dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3579 : "[PEER_WAITING_RESPONSE]" : "",
3580 326 : dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3581 : "[PREFER_PERSISTENT_GROUP]" : "",
3582 326 : dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3583 : "[WAIT_GO_NEG_RESPONSE]" : "",
3584 326 : dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3585 : "[WAIT_GO_NEG_CONFIRM]" : "",
3586 326 : dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3587 : "[GROUP_CLIENT_ONLY]" : "",
3588 326 : dev->flags & P2P_DEV_FORCE_FREQ ?
3589 : "[FORCE_FREQ]" : "",
3590 326 : dev->flags & P2P_DEV_PD_FOR_JOIN ?
3591 : "[PD_FOR_JOIN]" : "",
3592 : dev->status,
3593 : dev->invitation_reqs);
3594 326 : if (res < 0 || res >= end - pos)
3595 0 : return pos - buf;
3596 326 : pos += res;
3597 :
3598 326 : if (dev->ext_listen_period) {
3599 8 : res = os_snprintf(pos, end - pos,
3600 : "ext_listen_period=%u\n"
3601 : "ext_listen_interval=%u\n",
3602 4 : dev->ext_listen_period,
3603 4 : dev->ext_listen_interval);
3604 4 : if (res < 0 || res >= end - pos)
3605 0 : return pos - buf;
3606 4 : pos += res;
3607 : }
3608 :
3609 326 : if (dev->oper_ssid_len) {
3610 122 : res = os_snprintf(pos, end - pos,
3611 : "oper_ssid=%s\n",
3612 61 : wpa_ssid_txt(dev->oper_ssid,
3613 : dev->oper_ssid_len));
3614 61 : if (res < 0 || res >= end - pos)
3615 0 : return pos - buf;
3616 61 : pos += res;
3617 : }
3618 :
3619 : #ifdef CONFIG_WIFI_DISPLAY
3620 326 : if (dev->info.wfd_subelems) {
3621 6 : res = os_snprintf(pos, end - pos, "wfd_subelems=");
3622 6 : if (res < 0 || res >= end - pos)
3623 0 : return pos - buf;
3624 6 : pos += res;
3625 :
3626 12 : pos += wpa_snprintf_hex(pos, end - pos,
3627 6 : wpabuf_head(dev->info.wfd_subelems),
3628 6 : wpabuf_len(dev->info.wfd_subelems));
3629 :
3630 6 : res = os_snprintf(pos, end - pos, "\n");
3631 6 : if (res < 0 || res >= end - pos)
3632 0 : return pos - buf;
3633 6 : pos += res;
3634 : }
3635 : #endif /* CONFIG_WIFI_DISPLAY */
3636 :
3637 326 : return pos - buf;
3638 : }
3639 :
3640 :
3641 0 : int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3642 : {
3643 0 : return p2p_get_device(p2p, addr) != NULL;
3644 : }
3645 :
3646 :
3647 0 : void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3648 : {
3649 0 : if (enabled) {
3650 0 : p2p_dbg(p2p, "Client discoverability enabled");
3651 0 : p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3652 : } else {
3653 0 : p2p_dbg(p2p, "Client discoverability disabled");
3654 0 : p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3655 : }
3656 0 : }
3657 :
3658 :
3659 1 : static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3660 : u32 duration2, u32 interval2)
3661 : {
3662 : struct wpabuf *req;
3663 1 : struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3664 : u8 *len;
3665 :
3666 1 : req = wpabuf_alloc(100);
3667 1 : if (req == NULL)
3668 0 : return NULL;
3669 :
3670 1 : if (duration1 || interval1) {
3671 1 : os_memset(&desc1, 0, sizeof(desc1));
3672 1 : desc1.count_type = 1;
3673 1 : desc1.duration = duration1;
3674 1 : desc1.interval = interval1;
3675 1 : ptr1 = &desc1;
3676 :
3677 1 : if (duration2 || interval2) {
3678 0 : os_memset(&desc2, 0, sizeof(desc2));
3679 0 : desc2.count_type = 2;
3680 0 : desc2.duration = duration2;
3681 0 : desc2.interval = interval2;
3682 0 : ptr2 = &desc2;
3683 : }
3684 : }
3685 :
3686 1 : p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3687 1 : len = p2p_buf_add_ie_hdr(req);
3688 1 : p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3689 1 : p2p_buf_update_ie_hdr(req, len);
3690 :
3691 1 : return req;
3692 : }
3693 :
3694 :
3695 1 : int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3696 : const u8 *own_interface_addr, unsigned int freq,
3697 : u32 duration1, u32 interval1, u32 duration2,
3698 : u32 interval2)
3699 : {
3700 : struct wpabuf *req;
3701 :
3702 12 : p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3703 : " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3704 : "dur2=%u int2=%u",
3705 12 : MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3706 : freq, duration1, interval1, duration2, interval2);
3707 :
3708 1 : req = p2p_build_presence_req(duration1, interval1, duration2,
3709 : interval2);
3710 1 : if (req == NULL)
3711 0 : return -1;
3712 :
3713 1 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3714 2 : if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3715 : go_interface_addr,
3716 1 : wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3717 0 : p2p_dbg(p2p, "Failed to send Action frame");
3718 : }
3719 1 : wpabuf_free(req);
3720 :
3721 1 : return 0;
3722 : }
3723 :
3724 :
3725 1 : static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3726 : size_t noa_len, u8 dialog_token)
3727 : {
3728 : struct wpabuf *resp;
3729 : u8 *len;
3730 :
3731 1 : resp = wpabuf_alloc(100 + noa_len);
3732 1 : if (resp == NULL)
3733 0 : return NULL;
3734 :
3735 1 : p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3736 1 : len = p2p_buf_add_ie_hdr(resp);
3737 1 : p2p_buf_add_status(resp, status);
3738 1 : if (noa) {
3739 0 : wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3740 0 : wpabuf_put_le16(resp, noa_len);
3741 0 : wpabuf_put_data(resp, noa, noa_len);
3742 : } else
3743 1 : p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3744 1 : p2p_buf_update_ie_hdr(resp, len);
3745 :
3746 1 : return resp;
3747 : }
3748 :
3749 :
3750 1 : static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3751 : const u8 *sa, const u8 *data, size_t len,
3752 : int rx_freq)
3753 : {
3754 : struct p2p_message msg;
3755 : u8 status;
3756 : struct wpabuf *resp;
3757 : size_t g;
3758 1 : struct p2p_group *group = NULL;
3759 1 : int parsed = 0;
3760 : u8 noa[50];
3761 : int noa_len;
3762 :
3763 1 : p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3764 :
3765 1 : for (g = 0; g < p2p->num_groups; g++) {
3766 1 : if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3767 : ETH_ALEN) == 0) {
3768 1 : group = p2p->groups[g];
3769 1 : break;
3770 : }
3771 : }
3772 1 : if (group == NULL) {
3773 0 : p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3774 0 : MACSTR, MAC2STR(da));
3775 0 : return;
3776 : }
3777 :
3778 1 : if (p2p_parse(data, len, &msg) < 0) {
3779 0 : p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3780 0 : status = P2P_SC_FAIL_INVALID_PARAMS;
3781 0 : goto fail;
3782 : }
3783 1 : parsed = 1;
3784 :
3785 1 : if (msg.noa == NULL) {
3786 0 : p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3787 0 : status = P2P_SC_FAIL_INVALID_PARAMS;
3788 0 : goto fail;
3789 : }
3790 :
3791 1 : status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3792 :
3793 : fail:
3794 1 : if (p2p->cfg->get_noa)
3795 1 : noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3796 : sizeof(noa));
3797 : else
3798 0 : noa_len = -1;
3799 2 : resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3800 1 : noa_len > 0 ? noa_len : 0,
3801 1 : msg.dialog_token);
3802 1 : if (parsed)
3803 1 : p2p_parse_free(&msg);
3804 1 : if (resp == NULL)
3805 0 : return;
3806 :
3807 1 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3808 2 : if (p2p_send_action(p2p, rx_freq, sa, da, da,
3809 1 : wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3810 0 : p2p_dbg(p2p, "Failed to send Action frame");
3811 : }
3812 1 : wpabuf_free(resp);
3813 : }
3814 :
3815 :
3816 1 : static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3817 : const u8 *sa, const u8 *data, size_t len)
3818 : {
3819 : struct p2p_message msg;
3820 :
3821 1 : p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3822 :
3823 1 : if (p2p_parse(data, len, &msg) < 0) {
3824 0 : p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3825 0 : return;
3826 : }
3827 :
3828 1 : if (msg.status == NULL || msg.noa == NULL) {
3829 0 : p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3830 0 : p2p_parse_free(&msg);
3831 0 : return;
3832 : }
3833 :
3834 1 : if (p2p->cfg->presence_resp) {
3835 1 : p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3836 : msg.noa, msg.noa_len);
3837 : }
3838 :
3839 1 : if (*msg.status) {
3840 1 : p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3841 1 : *msg.status);
3842 1 : p2p_parse_free(&msg);
3843 1 : return;
3844 : }
3845 :
3846 0 : p2p_dbg(p2p, "P2P Presence Request was accepted");
3847 0 : wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3848 0 : msg.noa, msg.noa_len);
3849 : /* TODO: process NoA */
3850 0 : p2p_parse_free(&msg);
3851 : }
3852 :
3853 :
3854 0 : static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3855 : {
3856 0 : struct p2p_data *p2p = eloop_ctx;
3857 :
3858 0 : if (p2p->ext_listen_interval) {
3859 : /* Schedule next extended listen timeout */
3860 0 : eloop_register_timeout(p2p->ext_listen_interval_sec,
3861 : p2p->ext_listen_interval_usec,
3862 : p2p_ext_listen_timeout, p2p, NULL);
3863 : }
3864 :
3865 0 : if ((p2p->cfg->is_p2p_in_progress &&
3866 0 : p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
3867 0 : (p2p->pending_action_state == P2P_PENDING_PD &&
3868 0 : p2p->pd_retries > 0)) {
3869 0 : p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
3870 0 : p2p_state_txt(p2p->state));
3871 0 : return;
3872 : }
3873 :
3874 0 : if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3875 : /*
3876 : * This should not really happen, but it looks like the Listen
3877 : * command may fail is something else (e.g., a scan) was
3878 : * running at an inconvenient time. As a workaround, allow new
3879 : * Extended Listen operation to be started.
3880 : */
3881 0 : p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3882 0 : p2p->ext_listen_only = 0;
3883 0 : p2p_set_state(p2p, P2P_IDLE);
3884 : }
3885 :
3886 0 : if (p2p->state != P2P_IDLE) {
3887 0 : p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3888 0 : return;
3889 : }
3890 :
3891 0 : p2p_dbg(p2p, "Extended Listen timeout");
3892 0 : p2p->ext_listen_only = 1;
3893 0 : if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3894 0 : p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3895 0 : p2p->ext_listen_only = 0;
3896 : }
3897 : }
3898 :
3899 :
3900 4 : int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3901 : unsigned int interval)
3902 : {
3903 4 : if (period > 65535 || interval > 65535 || period > interval ||
3904 2 : (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3905 0 : p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3906 : period, interval);
3907 0 : return -1;
3908 : }
3909 :
3910 4 : eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3911 :
3912 4 : if (interval == 0) {
3913 2 : p2p_dbg(p2p, "Disabling Extended Listen Timing");
3914 2 : p2p->ext_listen_period = 0;
3915 2 : p2p->ext_listen_interval = 0;
3916 2 : return 0;
3917 : }
3918 :
3919 2 : p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3920 : period, interval);
3921 2 : p2p->ext_listen_period = period;
3922 2 : p2p->ext_listen_interval = interval;
3923 2 : p2p->ext_listen_interval_sec = interval / 1000;
3924 2 : p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3925 :
3926 2 : eloop_register_timeout(p2p->ext_listen_interval_sec,
3927 : p2p->ext_listen_interval_usec,
3928 : p2p_ext_listen_timeout, p2p, NULL);
3929 :
3930 2 : return 0;
3931 : }
3932 :
3933 :
3934 154 : void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3935 : const u8 *ie, size_t ie_len)
3936 : {
3937 : struct p2p_message msg;
3938 :
3939 154 : if (bssid == NULL || ie == NULL)
3940 306 : return;
3941 :
3942 1 : os_memset(&msg, 0, sizeof(msg));
3943 1 : if (p2p_parse_ies(ie, ie_len, &msg))
3944 0 : return;
3945 1 : if (msg.minor_reason_code == NULL) {
3946 0 : p2p_parse_free(&msg);
3947 0 : return;
3948 : }
3949 :
3950 7 : p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3951 : " reason_code=%u minor_reason_code=%u",
3952 7 : MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3953 :
3954 1 : p2p_parse_free(&msg);
3955 : }
3956 :
3957 :
3958 3 : void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3959 : const u8 *ie, size_t ie_len)
3960 : {
3961 : struct p2p_message msg;
3962 :
3963 3 : if (bssid == NULL || ie == NULL)
3964 4 : return;
3965 :
3966 1 : os_memset(&msg, 0, sizeof(msg));
3967 1 : if (p2p_parse_ies(ie, ie_len, &msg))
3968 0 : return;
3969 1 : if (msg.minor_reason_code == NULL) {
3970 0 : p2p_parse_free(&msg);
3971 0 : return;
3972 : }
3973 :
3974 7 : p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3975 : " reason_code=%u minor_reason_code=%u",
3976 7 : MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3977 :
3978 1 : p2p_parse_free(&msg);
3979 : }
3980 :
3981 :
3982 0 : void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3983 : {
3984 0 : if (enabled) {
3985 0 : p2p_dbg(p2p, "Managed P2P Device operations enabled");
3986 0 : p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3987 : } else {
3988 0 : p2p_dbg(p2p, "Managed P2P Device operations disabled");
3989 0 : p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3990 : }
3991 0 : }
3992 :
3993 :
3994 2 : int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3995 : {
3996 2 : if (p2p_channel_to_freq(reg_class, channel) < 0)
3997 0 : return -1;
3998 :
3999 2 : p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4000 : reg_class, channel);
4001 2 : p2p->cfg->reg_class = reg_class;
4002 2 : p2p->cfg->channel = channel;
4003 :
4004 2 : return 0;
4005 : }
4006 :
4007 :
4008 0 : int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4009 : {
4010 0 : p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4011 0 : if (postfix == NULL) {
4012 0 : p2p->cfg->ssid_postfix_len = 0;
4013 0 : return 0;
4014 : }
4015 0 : if (len > sizeof(p2p->cfg->ssid_postfix))
4016 0 : return -1;
4017 0 : os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4018 0 : p2p->cfg->ssid_postfix_len = len;
4019 0 : return 0;
4020 : }
4021 :
4022 :
4023 6 : int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4024 : int cfg_op_channel)
4025 : {
4026 6 : if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4027 2 : return -1;
4028 :
4029 4 : p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4030 : op_reg_class, op_channel);
4031 4 : p2p->cfg->op_reg_class = op_reg_class;
4032 4 : p2p->cfg->op_channel = op_channel;
4033 4 : p2p->cfg->cfg_op_channel = cfg_op_channel;
4034 4 : return 0;
4035 : }
4036 :
4037 :
4038 3790 : int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4039 : const struct p2p_channel *pref_chan)
4040 : {
4041 : struct p2p_channel *n;
4042 :
4043 3790 : if (pref_chan) {
4044 4 : n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4045 4 : if (n == NULL)
4046 0 : return -1;
4047 4 : os_memcpy(n, pref_chan,
4048 : num_pref_chan * sizeof(struct p2p_channel));
4049 : } else
4050 3786 : n = NULL;
4051 :
4052 3790 : os_free(p2p->cfg->pref_chan);
4053 3790 : p2p->cfg->pref_chan = n;
4054 3790 : p2p->cfg->num_pref_chan = num_pref_chan;
4055 :
4056 3790 : return 0;
4057 : }
4058 :
4059 :
4060 3824 : int p2p_set_no_go_freq(struct p2p_data *p2p,
4061 : const struct wpa_freq_range_list *list)
4062 : {
4063 : struct wpa_freq_range *tmp;
4064 :
4065 3824 : if (list == NULL || list->num == 0) {
4066 3822 : os_free(p2p->no_go_freq.range);
4067 3822 : p2p->no_go_freq.range = NULL;
4068 3822 : p2p->no_go_freq.num = 0;
4069 3822 : return 0;
4070 : }
4071 :
4072 2 : tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4073 2 : if (tmp == NULL)
4074 0 : return -1;
4075 2 : os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4076 2 : os_free(p2p->no_go_freq.range);
4077 2 : p2p->no_go_freq.range = tmp;
4078 2 : p2p->no_go_freq.num = list->num;
4079 2 : p2p_dbg(p2p, "Updated no GO chan list");
4080 :
4081 2 : return 0;
4082 : }
4083 :
4084 :
4085 67 : int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4086 : u8 *iface_addr)
4087 : {
4088 67 : struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4089 67 : if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4090 60 : return -1;
4091 7 : os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4092 7 : return 0;
4093 : }
4094 :
4095 :
4096 29 : int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4097 : u8 *dev_addr)
4098 : {
4099 29 : struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4100 29 : if (dev == NULL)
4101 29 : return -1;
4102 0 : os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4103 0 : return 0;
4104 : }
4105 :
4106 :
4107 0 : void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4108 : {
4109 0 : os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4110 0 : if (is_zero_ether_addr(p2p->peer_filter))
4111 0 : p2p_dbg(p2p, "Disable peer filter");
4112 : else
4113 0 : p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4114 0 : MAC2STR(p2p->peer_filter));
4115 0 : }
4116 :
4117 :
4118 0 : void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4119 : {
4120 0 : p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4121 0 : if (p2p->cross_connect == enabled)
4122 0 : return;
4123 0 : p2p->cross_connect = enabled;
4124 : /* TODO: may need to tear down any action group where we are GO(?) */
4125 : }
4126 :
4127 :
4128 74 : int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4129 : {
4130 74 : struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4131 74 : if (dev == NULL)
4132 63 : return -1;
4133 11 : if (dev->oper_freq <= 0)
4134 11 : return -1;
4135 0 : return dev->oper_freq;
4136 : }
4137 :
4138 :
4139 0 : void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4140 : {
4141 0 : p2p_dbg(p2p, "Intra BSS distribution %s",
4142 : enabled ? "enabled" : "disabled");
4143 0 : p2p->cfg->p2p_intra_bss = enabled;
4144 0 : }
4145 :
4146 :
4147 2683 : void p2p_update_channel_list(struct p2p_data *p2p,
4148 : const struct p2p_channels *chan,
4149 : const struct p2p_channels *cli_chan)
4150 : {
4151 2683 : p2p_dbg(p2p, "Update channel list");
4152 2683 : os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4153 2683 : p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4154 2683 : os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4155 : sizeof(struct p2p_channels));
4156 2683 : p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4157 2683 : }
4158 :
4159 :
4160 649 : int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4161 : const u8 *src, const u8 *bssid, const u8 *buf,
4162 : size_t len, unsigned int wait_time)
4163 : {
4164 649 : if (p2p->p2p_scan_running) {
4165 8 : p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4166 8 : if (p2p->after_scan_tx) {
4167 0 : p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4168 0 : os_free(p2p->after_scan_tx);
4169 : }
4170 8 : p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4171 : len);
4172 8 : if (p2p->after_scan_tx == NULL)
4173 0 : return -1;
4174 8 : p2p->after_scan_tx->freq = freq;
4175 8 : os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4176 8 : os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4177 8 : os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4178 8 : p2p->after_scan_tx->len = len;
4179 8 : p2p->after_scan_tx->wait_time = wait_time;
4180 8 : os_memcpy(p2p->after_scan_tx + 1, buf, len);
4181 8 : return 0;
4182 : }
4183 :
4184 641 : return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4185 : buf, len, wait_time);
4186 : }
4187 :
4188 :
4189 0 : void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4190 : int freq_overall)
4191 : {
4192 0 : p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4193 : freq_24, freq_5, freq_overall);
4194 0 : p2p->best_freq_24 = freq_24;
4195 0 : p2p->best_freq_5 = freq_5;
4196 0 : p2p->best_freq_overall = freq_overall;
4197 0 : }
4198 :
4199 :
4200 189 : void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4201 : {
4202 189 : p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4203 189 : p2p->own_freq_preference = freq;
4204 189 : }
4205 :
4206 :
4207 1903 : const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4208 : {
4209 1903 : if (p2p == NULL || p2p->go_neg_peer == NULL)
4210 1901 : return NULL;
4211 2 : return p2p->go_neg_peer->info.p2p_device_addr;
4212 : }
4213 :
4214 :
4215 : const struct p2p_peer_info *
4216 0 : p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4217 : {
4218 : struct p2p_device *dev;
4219 :
4220 0 : if (addr) {
4221 0 : dev = p2p_get_device(p2p, addr);
4222 0 : if (!dev)
4223 0 : return NULL;
4224 :
4225 0 : if (!next) {
4226 0 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4227 0 : return NULL;
4228 :
4229 0 : return &dev->info;
4230 : } else {
4231 : do {
4232 0 : dev = dl_list_first(&dev->list,
4233 : struct p2p_device,
4234 : list);
4235 0 : if (!dev || &dev->list == &p2p->devices)
4236 0 : return NULL;
4237 0 : } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4238 : }
4239 : } else {
4240 0 : dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4241 0 : if (!dev)
4242 0 : return NULL;
4243 0 : while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4244 0 : dev = dl_list_first(&dev->list,
4245 : struct p2p_device,
4246 : list);
4247 0 : if (!dev || &dev->list == &p2p->devices)
4248 0 : return NULL;
4249 : }
4250 : }
4251 :
4252 0 : return &dev->info;
4253 : }
4254 :
4255 :
4256 1307 : int p2p_in_progress(struct p2p_data *p2p)
4257 : {
4258 1307 : if (p2p == NULL)
4259 0 : return 0;
4260 1307 : if (p2p->state == P2P_SEARCH)
4261 1 : return 2;
4262 1306 : return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4263 : }
4264 :
4265 :
4266 101 : void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4267 : u8 client_timeout)
4268 : {
4269 101 : if (p2p) {
4270 101 : p2p->go_timeout = go_timeout;
4271 101 : p2p->client_timeout = client_timeout;
4272 : }
4273 101 : }
4274 :
4275 :
4276 : #ifdef CONFIG_WIFI_DISPLAY
4277 :
4278 42 : static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4279 : {
4280 : size_t g;
4281 : struct p2p_group *group;
4282 :
4283 44 : for (g = 0; g < p2p->num_groups; g++) {
4284 2 : group = p2p->groups[g];
4285 2 : p2p_group_force_beacon_update_ies(group);
4286 : }
4287 42 : }
4288 :
4289 :
4290 21 : int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4291 : {
4292 21 : wpabuf_free(p2p->wfd_ie_beacon);
4293 21 : p2p->wfd_ie_beacon = ie;
4294 21 : p2p_update_wfd_ie_groups(p2p);
4295 21 : return 0;
4296 : }
4297 :
4298 :
4299 21 : int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4300 : {
4301 21 : wpabuf_free(p2p->wfd_ie_probe_req);
4302 21 : p2p->wfd_ie_probe_req = ie;
4303 21 : return 0;
4304 : }
4305 :
4306 :
4307 21 : int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4308 : {
4309 21 : wpabuf_free(p2p->wfd_ie_probe_resp);
4310 21 : p2p->wfd_ie_probe_resp = ie;
4311 21 : p2p_update_wfd_ie_groups(p2p);
4312 21 : return 0;
4313 : }
4314 :
4315 :
4316 21 : int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4317 : {
4318 21 : wpabuf_free(p2p->wfd_ie_assoc_req);
4319 21 : p2p->wfd_ie_assoc_req = ie;
4320 21 : return 0;
4321 : }
4322 :
4323 :
4324 21 : int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4325 : {
4326 21 : wpabuf_free(p2p->wfd_ie_invitation);
4327 21 : p2p->wfd_ie_invitation = ie;
4328 21 : return 0;
4329 : }
4330 :
4331 :
4332 21 : int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4333 : {
4334 21 : wpabuf_free(p2p->wfd_ie_prov_disc_req);
4335 21 : p2p->wfd_ie_prov_disc_req = ie;
4336 21 : return 0;
4337 : }
4338 :
4339 :
4340 21 : int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4341 : {
4342 21 : wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4343 21 : p2p->wfd_ie_prov_disc_resp = ie;
4344 21 : return 0;
4345 : }
4346 :
4347 :
4348 21 : int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4349 : {
4350 21 : wpabuf_free(p2p->wfd_ie_go_neg);
4351 21 : p2p->wfd_ie_go_neg = ie;
4352 21 : return 0;
4353 : }
4354 :
4355 :
4356 21 : int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4357 : {
4358 21 : wpabuf_free(p2p->wfd_dev_info);
4359 21 : if (elem) {
4360 13 : p2p->wfd_dev_info = wpabuf_dup(elem);
4361 13 : if (p2p->wfd_dev_info == NULL)
4362 0 : return -1;
4363 : } else
4364 8 : p2p->wfd_dev_info = NULL;
4365 :
4366 21 : return 0;
4367 : }
4368 :
4369 :
4370 21 : int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4371 : {
4372 21 : wpabuf_free(p2p->wfd_assoc_bssid);
4373 21 : if (elem) {
4374 10 : p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4375 10 : if (p2p->wfd_assoc_bssid == NULL)
4376 0 : return -1;
4377 : } else
4378 11 : p2p->wfd_assoc_bssid = NULL;
4379 :
4380 21 : return 0;
4381 : }
4382 :
4383 :
4384 21 : int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4385 : const struct wpabuf *elem)
4386 : {
4387 21 : wpabuf_free(p2p->wfd_coupled_sink_info);
4388 21 : if (elem) {
4389 7 : p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4390 7 : if (p2p->wfd_coupled_sink_info == NULL)
4391 0 : return -1;
4392 : } else
4393 14 : p2p->wfd_coupled_sink_info = NULL;
4394 :
4395 21 : return 0;
4396 : }
4397 :
4398 : #endif /* CONFIG_WIFI_DISPLAY */
4399 :
4400 :
4401 0 : int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4402 : int max_disc_tu)
4403 : {
4404 0 : if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4405 0 : return -1;
4406 :
4407 0 : p2p->min_disc_int = min_disc_int;
4408 0 : p2p->max_disc_int = max_disc_int;
4409 0 : p2p->max_disc_tu = max_disc_tu;
4410 0 : p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4411 : min_disc_int, max_disc_int, max_disc_tu);
4412 :
4413 0 : return 0;
4414 : }
4415 :
4416 :
4417 49719 : void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4418 : {
4419 : va_list ap;
4420 : char buf[500];
4421 :
4422 49719 : if (!p2p->cfg->debug_print)
4423 49719 : return;
4424 :
4425 49719 : va_start(ap, fmt);
4426 49719 : vsnprintf(buf, sizeof(buf), fmt, ap);
4427 49719 : buf[sizeof(buf) - 1] = '\0';
4428 49719 : va_end(ap);
4429 49719 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4430 : }
4431 :
4432 :
4433 4 : void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4434 : {
4435 : va_list ap;
4436 : char buf[500];
4437 :
4438 4 : if (!p2p->cfg->debug_print)
4439 4 : return;
4440 :
4441 4 : va_start(ap, fmt);
4442 4 : vsnprintf(buf, sizeof(buf), fmt, ap);
4443 4 : buf[sizeof(buf) - 1] = '\0';
4444 4 : va_end(ap);
4445 4 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4446 : }
4447 :
4448 :
4449 0 : void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4450 : {
4451 : va_list ap;
4452 : char buf[500];
4453 :
4454 0 : if (!p2p->cfg->debug_print)
4455 0 : return;
4456 :
4457 0 : va_start(ap, fmt);
4458 0 : vsnprintf(buf, sizeof(buf), fmt, ap);
4459 0 : buf[sizeof(buf) - 1] = '\0';
4460 0 : va_end(ap);
4461 0 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4462 : }
4463 :
4464 :
4465 : #ifdef CONFIG_WPS_NFC
4466 :
4467 29 : static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4468 : int client_freq,
4469 : const u8 *go_dev_addr,
4470 : const u8 *ssid, size_t ssid_len)
4471 : {
4472 : struct wpabuf *buf;
4473 : u8 op_class, channel;
4474 29 : enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4475 :
4476 29 : buf = wpabuf_alloc(1000);
4477 29 : if (buf == NULL)
4478 0 : return NULL;
4479 :
4480 29 : op_class = p2p->cfg->reg_class;
4481 29 : channel = p2p->cfg->channel;
4482 :
4483 29 : p2p_buf_add_capability(buf, p2p->dev_capab &
4484 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4485 29 : p2p_buf_add_device_info(buf, p2p, NULL);
4486 :
4487 29 : if (p2p->num_groups > 0) {
4488 5 : int freq = p2p_group_get_freq(p2p->groups[0]);
4489 5 : role = P2P_GO_IN_A_GROUP;
4490 5 : if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4491 0 : p2p_dbg(p2p,
4492 : "Unknown GO operating frequency %d MHz for NFC handover",
4493 : freq);
4494 0 : wpabuf_free(buf);
4495 0 : return NULL;
4496 : }
4497 24 : } else if (client_freq > 0) {
4498 1 : role = P2P_CLIENT_IN_A_GROUP;
4499 1 : if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4500 0 : p2p_dbg(p2p,
4501 : "Unknown client operating frequency %d MHz for NFC handover",
4502 : client_freq);
4503 0 : wpabuf_free(buf);
4504 0 : return NULL;
4505 : }
4506 : }
4507 :
4508 29 : p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4509 : channel, role);
4510 :
4511 29 : if (p2p->num_groups > 0) {
4512 : /* Limit number of clients to avoid very long message */
4513 5 : p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4514 5 : p2p_group_buf_add_id(p2p->groups[0], buf);
4515 24 : } else if (client_freq > 0 &&
4516 1 : go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4517 1 : ssid && ssid_len > 0) {
4518 : /*
4519 : * Add the optional P2P Group ID to indicate in which group this
4520 : * device is a P2P Client.
4521 : */
4522 1 : p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4523 : }
4524 :
4525 29 : return buf;
4526 : }
4527 :
4528 :
4529 10 : struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4530 : int client_freq,
4531 : const u8 *go_dev_addr,
4532 : const u8 *ssid, size_t ssid_len)
4533 : {
4534 10 : return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4535 : ssid_len);
4536 : }
4537 :
4538 :
4539 19 : struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4540 : int client_freq,
4541 : const u8 *go_dev_addr,
4542 : const u8 *ssid, size_t ssid_len)
4543 : {
4544 19 : return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4545 : ssid_len);
4546 : }
4547 :
4548 :
4549 24 : int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4550 : struct p2p_nfc_params *params)
4551 : {
4552 : struct p2p_message msg;
4553 : struct p2p_device *dev;
4554 : const u8 *p2p_dev_addr;
4555 : int freq;
4556 : enum p2p_role_indication role;
4557 :
4558 24 : params->next_step = NO_ACTION;
4559 :
4560 24 : if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4561 : params->p2p_attr, params->p2p_len, &msg)) {
4562 0 : p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4563 0 : p2p_parse_free(&msg);
4564 0 : return -1;
4565 : }
4566 :
4567 24 : if (msg.p2p_device_addr)
4568 24 : p2p_dev_addr = msg.p2p_device_addr;
4569 0 : else if (msg.device_id)
4570 0 : p2p_dev_addr = msg.device_id;
4571 : else {
4572 0 : p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4573 0 : p2p_parse_free(&msg);
4574 0 : return -1;
4575 : }
4576 :
4577 24 : if (msg.oob_dev_password) {
4578 23 : os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4579 : msg.oob_dev_password_len);
4580 23 : params->oob_dev_pw_len = msg.oob_dev_password_len;
4581 : }
4582 :
4583 24 : dev = p2p_create_device(p2p, p2p_dev_addr);
4584 24 : if (dev == NULL) {
4585 0 : p2p_parse_free(&msg);
4586 0 : return -1;
4587 : }
4588 :
4589 24 : params->peer = &dev->info;
4590 :
4591 24 : os_get_reltime(&dev->last_seen);
4592 24 : dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4593 24 : p2p_copy_wps_info(p2p, dev, 0, &msg);
4594 :
4595 24 : if (!msg.oob_go_neg_channel) {
4596 0 : p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4597 0 : return -1;
4598 : }
4599 :
4600 24 : if (msg.oob_go_neg_channel[3] == 0 &&
4601 0 : msg.oob_go_neg_channel[4] == 0)
4602 0 : freq = 0;
4603 : else
4604 24 : freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4605 24 : msg.oob_go_neg_channel[4]);
4606 24 : if (freq < 0) {
4607 0 : p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4608 0 : return -1;
4609 : }
4610 24 : role = msg.oob_go_neg_channel[5];
4611 :
4612 24 : if (role == P2P_GO_IN_A_GROUP) {
4613 6 : p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4614 6 : params->go_freq = freq;
4615 18 : } else if (role == P2P_CLIENT_IN_A_GROUP) {
4616 1 : p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4617 : freq);
4618 1 : params->go_freq = freq;
4619 : } else
4620 17 : p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4621 24 : dev->oob_go_neg_freq = freq;
4622 :
4623 24 : if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4624 6 : freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4625 6 : p2p->cfg->channel);
4626 6 : if (freq < 0) {
4627 0 : p2p_dbg(p2p, "Own listen channel not known");
4628 0 : return -1;
4629 : }
4630 6 : p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4631 6 : dev->oob_go_neg_freq = freq;
4632 : }
4633 :
4634 24 : if (msg.group_id) {
4635 7 : os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4636 7 : params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4637 7 : os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4638 : params->go_ssid_len);
4639 : }
4640 :
4641 24 : p2p_parse_free(&msg);
4642 :
4643 24 : if (dev->flags & P2P_DEV_USER_REJECTED) {
4644 0 : p2p_dbg(p2p, "Do not report rejected device");
4645 0 : return 0;
4646 : }
4647 :
4648 24 : if (!(dev->flags & P2P_DEV_REPORTED)) {
4649 48 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4650 24 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
4651 24 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4652 : }
4653 :
4654 24 : if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4655 2 : params->next_step = BOTH_GO;
4656 22 : else if (role == P2P_GO_IN_A_GROUP)
4657 4 : params->next_step = JOIN_GROUP;
4658 18 : else if (role == P2P_CLIENT_IN_A_GROUP) {
4659 1 : dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4660 1 : params->next_step = PEER_CLIENT;
4661 17 : } else if (p2p->num_groups > 0)
4662 4 : params->next_step = AUTH_JOIN;
4663 13 : else if (params->sel)
4664 9 : params->next_step = INIT_GO_NEG;
4665 : else
4666 4 : params->next_step = RESP_GO_NEG;
4667 :
4668 24 : return 0;
4669 : }
4670 :
4671 :
4672 13 : void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4673 : int go_intent,
4674 : const u8 *own_interface_addr)
4675 : {
4676 :
4677 13 : p2p->authorized_oob_dev_pw_id = dev_pw_id;
4678 13 : if (dev_pw_id == 0) {
4679 3 : p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4680 16 : return;
4681 : }
4682 :
4683 10 : p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4684 : dev_pw_id);
4685 :
4686 10 : p2p->go_intent = go_intent;
4687 10 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4688 : }
4689 :
4690 : #endif /* CONFIG_WPS_NFC */
|
