1 /*
2 * wpa_supplicant - P2P
3 * Copyright (c) 2009-2010, Atheros Communications
4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "eloop.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/wpa_ctrl.h"
17 #include "wps/wps_i.h"
18 #include "p2p/p2p.h"
19 #include "ap/hostapd.h"
20 #include "ap/ap_config.h"
21 #include "ap/sta_info.h"
22 #include "ap/ap_drv_ops.h"
23 #include "ap/wps_hostapd.h"
24 #include "ap/p2p_hostapd.h"
25 #include "eapol_supp/eapol_supp_sm.h"
26 #include "rsn_supp/wpa.h"
27 #include "wpa_supplicant_i.h"
28 #include "driver_i.h"
29 #include "ap.h"
30 #include "config_ssid.h"
31 #include "config.h"
32 #include "notify.h"
33 #include "scan.h"
34 #include "bss.h"
35 #include "offchannel.h"
36 #include "wps_supplicant.h"
37 #include "p2p_supplicant.h"
38 #include "wifi_display.h"
39
40
41 /*
42 * How many times to try to scan to find the GO before giving up on join
43 * request.
44 */
45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
46
47 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
48
49 #ifndef P2P_MAX_CLIENT_IDLE
50 /*
51 * How many seconds to try to reconnect to the GO when connection in P2P client
52 * role has been lost.
53 */
54 #define P2P_MAX_CLIENT_IDLE 10
55 #endif /* P2P_MAX_CLIENT_IDLE */
56
57 #ifndef P2P_MAX_INITIAL_CONN_WAIT
58 /*
59 * How many seconds to wait for initial 4-way handshake to get completed after
60 * WPS provisioning step or after the re-invocation of a persistent group on a
61 * P2P Client.
62 */
63 #define P2P_MAX_INITIAL_CONN_WAIT 10
64 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
65
66 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
67 /*
68 * How many seconds to wait for initial 4-way handshake to get completed after
69 * WPS provisioning step on the GO. This controls the extra time the P2P
70 * operation is considered to be in progress (e.g., to delay other scans) after
71 * WPS provisioning has been completed on the GO during group formation.
72 */
73 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
74 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
75
76 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
77 /*
78 * How many seconds to wait for initial 4-way handshake to get completed after
79 * re-invocation of a persistent group on the GO when the client is expected
80 * to connect automatically (no user interaction).
81 */
82 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
83 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
84
85 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
86
87 enum p2p_group_removal_reason {
88 P2P_GROUP_REMOVAL_UNKNOWN,
89 P2P_GROUP_REMOVAL_SILENT,
90 P2P_GROUP_REMOVAL_FORMATION_FAILED,
91 P2P_GROUP_REMOVAL_REQUESTED,
92 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
93 P2P_GROUP_REMOVAL_UNAVAILABLE,
94 P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
95 P2P_GROUP_REMOVAL_PSK_FAILURE,
96 P2P_GROUP_REMOVAL_FREQ_CONFLICT
97 };
98
99
100 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
101 static struct wpa_supplicant *
102 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
103 int go);
104 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
105 const u8 *ssid, size_t ssid_len);
106 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
107 const u8 *ssid, size_t ssid_len);
108 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
109 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
110 const u8 *dev_addr, enum p2p_wps_method wps_method,
111 int auto_join, int freq,
112 const u8 *ssid, size_t ssid_len);
113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
114 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
115 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
116 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
117 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
118 void *timeout_ctx);
119 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
120 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
121 int group_added);
122 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
123 static void wpas_stop_listen(void *ctx);
124 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
125 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
126
127
128 /*
129 * Get the number of concurrent channels that the HW can operate, but that are
130 * currently not in use by any of the wpa_supplicant interfaces.
131 */
wpas_p2p_num_unused_channels(struct wpa_supplicant * wpa_s)132 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
133 {
134 int *freqs;
135 int num, unused;
136
137 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
138 if (!freqs)
139 return -1;
140
141 num = get_shared_radio_freqs(wpa_s, freqs,
142 wpa_s->num_multichan_concurrent);
143 os_free(freqs);
144
145 unused = wpa_s->num_multichan_concurrent - num;
146 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
147 return unused;
148 }
149
150
151 /*
152 * Get the frequencies that are currently in use by one or more of the virtual
153 * interfaces, and that are also valid for P2P operation.
154 */
155 static unsigned int
wpas_p2p_valid_oper_freqs(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * p2p_freqs,unsigned int len)156 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
157 struct wpa_used_freq_data *p2p_freqs,
158 unsigned int len)
159 {
160 struct wpa_used_freq_data *freqs;
161 unsigned int num, i, j;
162
163 freqs = os_calloc(wpa_s->num_multichan_concurrent,
164 sizeof(struct wpa_used_freq_data));
165 if (!freqs)
166 return 0;
167
168 num = get_shared_radio_freqs_data(wpa_s, freqs,
169 wpa_s->num_multichan_concurrent);
170
171 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
172
173 for (i = 0, j = 0; i < num && j < len; i++) {
174 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
175 p2p_freqs[j++] = freqs[i];
176 }
177
178 os_free(freqs);
179
180 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
181
182 return j;
183 }
184
185
wpas_p2p_set_own_freq_preference(struct wpa_supplicant * wpa_s,int freq)186 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
187 int freq)
188 {
189 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
190 return;
191 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
192 freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
193 wpas_p2p_num_unused_channels(wpa_s) > 0) {
194 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
195 freq);
196 freq = 0;
197 }
198 p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
199 }
200
201
wpas_p2p_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)202 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
203 struct wpa_scan_results *scan_res)
204 {
205 size_t i;
206
207 if (wpa_s->p2p_scan_work) {
208 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
209 wpa_s->p2p_scan_work = NULL;
210 radio_work_done(work);
211 }
212
213 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
214 return;
215
216 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
217 (int) scan_res->num);
218
219 for (i = 0; i < scan_res->num; i++) {
220 struct wpa_scan_res *bss = scan_res->res[i];
221 struct os_reltime time_tmp_age, entry_ts;
222 const u8 *ies;
223 size_t ies_len;
224
225 time_tmp_age.sec = bss->age / 1000;
226 time_tmp_age.usec = (bss->age % 1000) * 1000;
227 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
228
229 ies = (const u8 *) (bss + 1);
230 ies_len = bss->ie_len;
231 if (bss->beacon_ie_len > 0 &&
232 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
233 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
234 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
235 MACSTR, MAC2STR(bss->bssid));
236 ies = ies + ies_len;
237 ies_len = bss->beacon_ie_len;
238 }
239
240
241 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
242 bss->freq, &entry_ts, bss->level,
243 ies, ies_len) > 0)
244 break;
245 }
246
247 p2p_scan_res_handled(wpa_s->global->p2p);
248 }
249
250
wpas_p2p_trigger_scan_cb(struct wpa_radio_work * work,int deinit)251 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
252 {
253 struct wpa_supplicant *wpa_s = work->wpa_s;
254 struct wpa_driver_scan_params *params = work->ctx;
255 int ret;
256
257 if (deinit) {
258 if (!work->started) {
259 wpa_scan_free_params(params);
260 return;
261 }
262
263 wpa_s->p2p_scan_work = NULL;
264 return;
265 }
266
267 ret = wpa_drv_scan(wpa_s, params);
268 wpa_scan_free_params(params);
269 work->ctx = NULL;
270 if (ret) {
271 radio_work_done(work);
272 return;
273 }
274
275 os_get_reltime(&wpa_s->scan_trigger_time);
276 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
277 wpa_s->own_scan_requested = 1;
278 wpa_s->p2p_scan_work = work;
279 }
280
281
wpas_p2p_scan(void * ctx,enum p2p_scan_type type,int freq,unsigned int num_req_dev_types,const u8 * req_dev_types,const u8 * dev_id,u16 pw_id)282 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
283 unsigned int num_req_dev_types,
284 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
285 {
286 struct wpa_supplicant *wpa_s = ctx;
287 struct wpa_driver_scan_params *params = NULL;
288 struct wpabuf *wps_ie, *ies;
289 size_t ielen;
290 u8 *n;
291
292 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
293 return -1;
294
295 if (wpa_s->p2p_scan_work) {
296 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
297 return -1;
298 }
299
300 params = os_zalloc(sizeof(*params));
301 if (params == NULL)
302 return -1;
303
304 /* P2P Wildcard SSID */
305 params->num_ssids = 1;
306 n = os_malloc(P2P_WILDCARD_SSID_LEN);
307 if (n == NULL)
308 goto fail;
309 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
310 params->ssids[0].ssid = n;
311 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
312
313 wpa_s->wps->dev.p2p = 1;
314 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
315 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
316 num_req_dev_types, req_dev_types);
317 if (wps_ie == NULL)
318 goto fail;
319
320 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
321 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
322 if (ies == NULL) {
323 wpabuf_free(wps_ie);
324 goto fail;
325 }
326 wpabuf_put_buf(ies, wps_ie);
327 wpabuf_free(wps_ie);
328
329 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
330
331 params->p2p_probe = 1;
332 n = os_malloc(wpabuf_len(ies));
333 if (n == NULL) {
334 wpabuf_free(ies);
335 goto fail;
336 }
337 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
338 params->extra_ies = n;
339 params->extra_ies_len = wpabuf_len(ies);
340 wpabuf_free(ies);
341
342 switch (type) {
343 case P2P_SCAN_SOCIAL:
344 params->freqs = os_malloc(4 * sizeof(int));
345 if (params->freqs == NULL)
346 goto fail;
347 params->freqs[0] = 2412;
348 params->freqs[1] = 2437;
349 params->freqs[2] = 2462;
350 params->freqs[3] = 0;
351 break;
352 case P2P_SCAN_FULL:
353 break;
354 case P2P_SCAN_SOCIAL_PLUS_ONE:
355 params->freqs = os_malloc(5 * sizeof(int));
356 if (params->freqs == NULL)
357 goto fail;
358 params->freqs[0] = 2412;
359 params->freqs[1] = 2437;
360 params->freqs[2] = 2462;
361 params->freqs[3] = freq;
362 params->freqs[4] = 0;
363 break;
364 }
365
366 radio_remove_works(wpa_s, "p2p-scan", 0);
367 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
368 params) < 0)
369 goto fail;
370 return 0;
371
372 fail:
373 wpa_scan_free_params(params);
374 return -1;
375 }
376
377
wpas_p2p_if_type(int p2p_group_interface)378 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
379 {
380 switch (p2p_group_interface) {
381 case P2P_GROUP_INTERFACE_PENDING:
382 return WPA_IF_P2P_GROUP;
383 case P2P_GROUP_INTERFACE_GO:
384 return WPA_IF_P2P_GO;
385 case P2P_GROUP_INTERFACE_CLIENT:
386 return WPA_IF_P2P_CLIENT;
387 }
388
389 return WPA_IF_P2P_GROUP;
390 }
391
392
wpas_get_p2p_group(struct wpa_supplicant * wpa_s,const u8 * ssid,size_t ssid_len,int * go)393 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
394 const u8 *ssid,
395 size_t ssid_len, int *go)
396 {
397 struct wpa_ssid *s;
398
399 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
400 for (s = wpa_s->conf->ssid; s; s = s->next) {
401 if (s->disabled != 0 || !s->p2p_group ||
402 s->ssid_len != ssid_len ||
403 os_memcmp(ssid, s->ssid, ssid_len) != 0)
404 continue;
405 if (s->mode == WPAS_MODE_P2P_GO &&
406 s != wpa_s->current_ssid)
407 continue;
408 if (go)
409 *go = s->mode == WPAS_MODE_P2P_GO;
410 return wpa_s;
411 }
412 }
413
414 return NULL;
415 }
416
417
wpas_p2p_group_delete(struct wpa_supplicant * wpa_s,enum p2p_group_removal_reason removal_reason)418 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
419 enum p2p_group_removal_reason removal_reason)
420 {
421 struct wpa_ssid *ssid;
422 char *gtype;
423 const char *reason;
424
425 ssid = wpa_s->current_ssid;
426 if (ssid == NULL) {
427 /*
428 * The current SSID was not known, but there may still be a
429 * pending P2P group interface waiting for provisioning or a
430 * P2P group that is trying to reconnect.
431 */
432 ssid = wpa_s->conf->ssid;
433 while (ssid) {
434 if (ssid->p2p_group && ssid->disabled != 2)
435 break;
436 ssid = ssid->next;
437 }
438 if (ssid == NULL &&
439 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
440 {
441 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
442 "not found");
443 return -1;
444 }
445 }
446 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
447 gtype = "GO";
448 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
449 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
450 wpa_s->reassociate = 0;
451 wpa_s->disconnected = 1;
452 wpa_supplicant_deauthenticate(wpa_s,
453 WLAN_REASON_DEAUTH_LEAVING);
454 gtype = "client";
455 } else
456 gtype = "GO";
457 if (wpa_s->cross_connect_in_use) {
458 wpa_s->cross_connect_in_use = 0;
459 wpa_msg_global(wpa_s->parent, MSG_INFO,
460 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
461 wpa_s->ifname, wpa_s->cross_connect_uplink);
462 }
463 switch (removal_reason) {
464 case P2P_GROUP_REMOVAL_REQUESTED:
465 reason = " reason=REQUESTED";
466 break;
467 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
468 reason = " reason=FORMATION_FAILED";
469 break;
470 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
471 reason = " reason=IDLE";
472 break;
473 case P2P_GROUP_REMOVAL_UNAVAILABLE:
474 reason = " reason=UNAVAILABLE";
475 break;
476 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
477 reason = " reason=GO_ENDING_SESSION";
478 break;
479 case P2P_GROUP_REMOVAL_PSK_FAILURE:
480 reason = " reason=PSK_FAILURE";
481 break;
482 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
483 reason = " reason=FREQ_CONFLICT";
484 break;
485 default:
486 reason = "";
487 break;
488 }
489 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
490 wpa_msg_global(wpa_s->parent, MSG_INFO,
491 P2P_EVENT_GROUP_REMOVED "%s %s%s",
492 wpa_s->ifname, gtype, reason);
493 }
494
495 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
496 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
497 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
498 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
499 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
500 wpa_s->parent, NULL) > 0) {
501 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
502 "timeout");
503 wpa_s->p2p_in_provisioning = 0;
504 }
505
506 wpa_s->p2p_in_invitation = 0;
507
508 /*
509 * Make sure wait for the first client does not remain active after the
510 * group has been removed.
511 */
512 wpa_s->global->p2p_go_wait_client.sec = 0;
513
514 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
515 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
516
517 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
518 struct wpa_global *global;
519 char *ifname;
520 enum wpa_driver_if_type type;
521 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
522 wpa_s->ifname);
523 global = wpa_s->global;
524 ifname = os_strdup(wpa_s->ifname);
525 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
526 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
527 wpa_s = global->ifaces;
528 if (wpa_s && ifname)
529 wpa_drv_if_remove(wpa_s, type, ifname);
530 os_free(ifname);
531 return 1;
532 }
533
534 if (!wpa_s->p2p_go_group_formation_completed) {
535 wpa_s->global->p2p_group_formation = NULL;
536 wpa_s->p2p_in_provisioning = 0;
537 }
538
539 wpa_s->show_group_started = 0;
540 os_free(wpa_s->go_params);
541 wpa_s->go_params = NULL;
542
543 wpa_s->waiting_presence_resp = 0;
544
545 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
546 if (ssid && (ssid->p2p_group ||
547 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
548 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
549 int id = ssid->id;
550 if (ssid == wpa_s->current_ssid) {
551 wpa_sm_set_config(wpa_s->wpa, NULL);
552 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
553 wpa_s->current_ssid = NULL;
554 }
555 /*
556 * Networks objects created during any P2P activities are not
557 * exposed out as they might/will confuse certain non-P2P aware
558 * applications since these network objects won't behave like
559 * regular ones.
560 *
561 * Likewise, we don't send out network removed signals for such
562 * network objects.
563 */
564 wpa_config_remove_network(wpa_s->conf, id);
565 wpa_supplicant_clear_status(wpa_s);
566 wpa_supplicant_cancel_sched_scan(wpa_s);
567 } else {
568 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
569 "found");
570 }
571 if (wpa_s->ap_iface)
572 wpa_supplicant_ap_deinit(wpa_s);
573 else
574 wpa_drv_deinit_p2p_cli(wpa_s);
575
576 return 0;
577 }
578
579
wpas_p2p_persistent_group(struct wpa_supplicant * wpa_s,u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)580 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
581 u8 *go_dev_addr,
582 const u8 *ssid, size_t ssid_len)
583 {
584 struct wpa_bss *bss;
585 const u8 *bssid;
586 struct wpabuf *p2p;
587 u8 group_capab;
588 const u8 *addr;
589
590 if (wpa_s->go_params)
591 bssid = wpa_s->go_params->peer_interface_addr;
592 else
593 bssid = wpa_s->bssid;
594
595 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
596 if (bss == NULL && wpa_s->go_params &&
597 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
598 bss = wpa_bss_get_p2p_dev_addr(
599 wpa_s, wpa_s->go_params->peer_device_addr);
600 if (bss == NULL) {
601 u8 iface_addr[ETH_ALEN];
602 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
603 iface_addr) == 0)
604 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
605 }
606 if (bss == NULL) {
607 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
608 "group is persistent - BSS " MACSTR " not found",
609 MAC2STR(bssid));
610 return 0;
611 }
612
613 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
614 if (p2p == NULL)
615 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
616 P2P_IE_VENDOR_TYPE);
617 if (p2p == NULL) {
618 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
619 "group is persistent - BSS " MACSTR
620 " did not include P2P IE", MAC2STR(bssid));
621 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
622 (u8 *) (bss + 1), bss->ie_len);
623 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
624 ((u8 *) bss + 1) + bss->ie_len,
625 bss->beacon_ie_len);
626 return 0;
627 }
628
629 group_capab = p2p_get_group_capab(p2p);
630 addr = p2p_get_go_dev_addr(p2p);
631 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
632 "group_capab=0x%x", group_capab);
633 if (addr) {
634 os_memcpy(go_dev_addr, addr, ETH_ALEN);
635 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
636 MAC2STR(addr));
637 } else
638 os_memset(go_dev_addr, 0, ETH_ALEN);
639 wpabuf_free(p2p);
640
641 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
642 "go_dev_addr=" MACSTR,
643 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
644
645 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
646 }
647
648
wpas_p2p_store_persistent_group(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * go_dev_addr)649 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
650 struct wpa_ssid *ssid,
651 const u8 *go_dev_addr)
652 {
653 struct wpa_ssid *s;
654 int changed = 0;
655
656 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
657 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
658 for (s = wpa_s->conf->ssid; s; s = s->next) {
659 if (s->disabled == 2 &&
660 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
661 s->ssid_len == ssid->ssid_len &&
662 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
663 break;
664 }
665
666 if (s) {
667 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
668 "entry");
669 if (ssid->passphrase && !s->passphrase)
670 changed = 1;
671 else if (ssid->passphrase && s->passphrase &&
672 os_strcmp(ssid->passphrase, s->passphrase) != 0)
673 changed = 1;
674 } else {
675 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
676 "entry");
677 changed = 1;
678 s = wpa_config_add_network(wpa_s->conf);
679 if (s == NULL)
680 return -1;
681
682 /*
683 * Instead of network_added we emit persistent_group_added
684 * notification. Also to keep the defense checks in
685 * persistent_group obj registration method, we set the
686 * relevant flags in s to designate it as a persistent group.
687 */
688 s->p2p_group = 1;
689 s->p2p_persistent_group = 1;
690 wpas_notify_persistent_group_added(wpa_s, s);
691 wpa_config_set_network_defaults(s);
692 }
693
694 s->p2p_group = 1;
695 s->p2p_persistent_group = 1;
696 s->disabled = 2;
697 s->bssid_set = 1;
698 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
699 s->mode = ssid->mode;
700 s->auth_alg = WPA_AUTH_ALG_OPEN;
701 s->key_mgmt = WPA_KEY_MGMT_PSK;
702 s->proto = WPA_PROTO_RSN;
703 s->pairwise_cipher = WPA_CIPHER_CCMP;
704 s->export_keys = 1;
705 if (ssid->passphrase) {
706 os_free(s->passphrase);
707 s->passphrase = os_strdup(ssid->passphrase);
708 }
709 if (ssid->psk_set) {
710 s->psk_set = 1;
711 os_memcpy(s->psk, ssid->psk, 32);
712 }
713 if (s->passphrase && !s->psk_set)
714 wpa_config_update_psk(s);
715 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
716 os_free(s->ssid);
717 s->ssid = os_malloc(ssid->ssid_len);
718 }
719 if (s->ssid) {
720 s->ssid_len = ssid->ssid_len;
721 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
722 }
723 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
724 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
725 wpa_s->global->add_psk = NULL;
726 changed = 1;
727 }
728
729 if (changed && wpa_s->conf->update_config &&
730 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
731 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
732 }
733
734 return s->id;
735 }
736
737
wpas_p2p_add_persistent_group_client(struct wpa_supplicant * wpa_s,const u8 * addr)738 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
739 const u8 *addr)
740 {
741 struct wpa_ssid *ssid, *s;
742 u8 *n;
743 size_t i;
744 int found = 0;
745
746 ssid = wpa_s->current_ssid;
747 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
748 !ssid->p2p_persistent_group)
749 return;
750
751 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
752 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
753 continue;
754
755 if (s->ssid_len == ssid->ssid_len &&
756 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
757 break;
758 }
759
760 if (s == NULL)
761 return;
762
763 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
764 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
765 ETH_ALEN) != 0)
766 continue;
767
768 if (i == s->num_p2p_clients - 1)
769 return; /* already the most recent entry */
770
771 /* move the entry to mark it most recent */
772 os_memmove(s->p2p_client_list + i * ETH_ALEN,
773 s->p2p_client_list + (i + 1) * ETH_ALEN,
774 (s->num_p2p_clients - i - 1) * ETH_ALEN);
775 os_memcpy(s->p2p_client_list +
776 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
777 found = 1;
778 break;
779 }
780
781 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
782 n = os_realloc_array(s->p2p_client_list,
783 s->num_p2p_clients + 1, ETH_ALEN);
784 if (n == NULL)
785 return;
786 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
787 s->p2p_client_list = n;
788 s->num_p2p_clients++;
789 } else if (!found && s->p2p_client_list) {
790 /* Not enough room for an additional entry - drop the oldest
791 * entry */
792 os_memmove(s->p2p_client_list,
793 s->p2p_client_list + ETH_ALEN,
794 (s->num_p2p_clients - 1) * ETH_ALEN);
795 os_memcpy(s->p2p_client_list +
796 (s->num_p2p_clients - 1) * ETH_ALEN,
797 addr, ETH_ALEN);
798 }
799
800 if (wpa_s->parent->conf->update_config &&
801 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
802 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
803 }
804
805
wpas_p2p_group_started(struct wpa_supplicant * wpa_s,int go,struct wpa_ssid * ssid,int freq,const u8 * psk,const char * passphrase,const u8 * go_dev_addr,int persistent,const char * extra)806 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
807 int go, struct wpa_ssid *ssid, int freq,
808 const u8 *psk, const char *passphrase,
809 const u8 *go_dev_addr, int persistent,
810 const char *extra)
811 {
812 const char *ssid_txt;
813 char psk_txt[65];
814
815 if (psk)
816 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
817 else
818 psk_txt[0] = '\0';
819
820 if (ssid)
821 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
822 else
823 ssid_txt = "";
824
825 if (passphrase && passphrase[0] == '\0')
826 passphrase = NULL;
827
828 /*
829 * Include PSK/passphrase only in the control interface message and
830 * leave it out from the debug log entry.
831 */
832 wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
833 P2P_EVENT_GROUP_STARTED
834 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
835 MACSTR "%s%s",
836 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
837 psk ? " psk=" : "", psk_txt,
838 passphrase ? " passphrase=\"" : "",
839 passphrase ? passphrase : "",
840 passphrase ? "\"" : "",
841 MAC2STR(go_dev_addr),
842 persistent ? " [PERSISTENT]" : "", extra);
843 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
844 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
845 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
846 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
847 extra);
848 }
849
850
wpas_group_formation_completed(struct wpa_supplicant * wpa_s,int success)851 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
852 int success)
853 {
854 struct wpa_ssid *ssid;
855 int client;
856 int persistent;
857 u8 go_dev_addr[ETH_ALEN];
858 int network_id = -1;
859
860 /*
861 * This callback is likely called for the main interface. Update wpa_s
862 * to use the group interface if a new interface was created for the
863 * group.
864 */
865 if (wpa_s->global->p2p_group_formation)
866 wpa_s = wpa_s->global->p2p_group_formation;
867 if (wpa_s->p2p_go_group_formation_completed) {
868 wpa_s->global->p2p_group_formation = NULL;
869 wpa_s->p2p_in_provisioning = 0;
870 }
871 wpa_s->p2p_in_invitation = 0;
872
873 if (!success) {
874 wpa_msg_global(wpa_s->parent, MSG_INFO,
875 P2P_EVENT_GROUP_FORMATION_FAILURE);
876 wpas_p2p_group_delete(wpa_s,
877 P2P_GROUP_REMOVAL_FORMATION_FAILED);
878 return;
879 }
880
881 wpa_msg_global(wpa_s->parent, MSG_INFO,
882 P2P_EVENT_GROUP_FORMATION_SUCCESS);
883
884 ssid = wpa_s->current_ssid;
885 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
886 ssid->mode = WPAS_MODE_P2P_GO;
887 p2p_group_notif_formation_done(wpa_s->p2p_group);
888 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
889 }
890
891 persistent = 0;
892 if (ssid) {
893 client = ssid->mode == WPAS_MODE_INFRA;
894 if (ssid->mode == WPAS_MODE_P2P_GO) {
895 persistent = ssid->p2p_persistent_group;
896 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
897 ETH_ALEN);
898 } else
899 persistent = wpas_p2p_persistent_group(wpa_s,
900 go_dev_addr,
901 ssid->ssid,
902 ssid->ssid_len);
903 } else {
904 client = wpa_s->p2p_group_interface ==
905 P2P_GROUP_INTERFACE_CLIENT;
906 os_memset(go_dev_addr, 0, ETH_ALEN);
907 }
908
909 wpa_s->show_group_started = 0;
910 if (client) {
911 /*
912 * Indicate event only after successfully completed 4-way
913 * handshake, i.e., when the interface is ready for data
914 * packets.
915 */
916 wpa_s->show_group_started = 1;
917 } else {
918 wpas_p2p_group_started(wpa_s, 1, ssid,
919 ssid ? ssid->frequency : 0,
920 ssid && ssid->passphrase == NULL &&
921 ssid->psk_set ? ssid->psk : NULL,
922 ssid ? ssid->passphrase : NULL,
923 go_dev_addr, persistent, "");
924 wpas_p2p_cross_connect_setup(wpa_s);
925 wpas_p2p_set_group_idle_timeout(wpa_s);
926 }
927
928 if (persistent)
929 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
930 ssid, go_dev_addr);
931 else {
932 os_free(wpa_s->global->add_psk);
933 wpa_s->global->add_psk = NULL;
934 }
935 if (network_id < 0 && ssid)
936 network_id = ssid->id;
937 if (!client) {
938 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
939 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
940 }
941 }
942
943
944 struct send_action_work {
945 unsigned int freq;
946 u8 dst[ETH_ALEN];
947 u8 src[ETH_ALEN];
948 u8 bssid[ETH_ALEN];
949 size_t len;
950 unsigned int wait_time;
951 u8 buf[0];
952 };
953
954
wpas_p2p_send_action_work_timeout(void * eloop_ctx,void * timeout_ctx)955 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
956 void *timeout_ctx)
957 {
958 struct wpa_supplicant *wpa_s = eloop_ctx;
959
960 if (!wpa_s->p2p_send_action_work)
961 return;
962
963 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
964 os_free(wpa_s->p2p_send_action_work->ctx);
965 radio_work_done(wpa_s->p2p_send_action_work);
966 wpa_s->p2p_send_action_work = NULL;
967 }
968
969
wpas_p2p_action_tx_clear(struct wpa_supplicant * wpa_s)970 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
971 {
972 if (wpa_s->p2p_send_action_work) {
973 struct send_action_work *awork;
974 awork = wpa_s->p2p_send_action_work->ctx;
975 if (awork->wait_time == 0) {
976 os_free(awork);
977 radio_work_done(wpa_s->p2p_send_action_work);
978 wpa_s->p2p_send_action_work = NULL;
979 } else {
980 /*
981 * In theory, this should not be needed, but number of
982 * places in the P2P code is still using non-zero wait
983 * time for the last Action frame in the sequence and
984 * some of these do not call send_action_done().
985 */
986 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
987 wpa_s, NULL);
988 eloop_register_timeout(
989 0, awork->wait_time * 1000,
990 wpas_p2p_send_action_work_timeout,
991 wpa_s, NULL);
992 }
993 }
994 }
995
996
wpas_p2p_send_action_tx_status(struct wpa_supplicant * wpa_s,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * data,size_t data_len,enum offchannel_send_action_result result)997 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
998 unsigned int freq,
999 const u8 *dst, const u8 *src,
1000 const u8 *bssid,
1001 const u8 *data, size_t data_len,
1002 enum offchannel_send_action_result
1003 result)
1004 {
1005 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1006
1007 wpas_p2p_action_tx_clear(wpa_s);
1008
1009 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1010 return;
1011
1012 switch (result) {
1013 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1014 res = P2P_SEND_ACTION_SUCCESS;
1015 break;
1016 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1017 res = P2P_SEND_ACTION_NO_ACK;
1018 break;
1019 case OFFCHANNEL_SEND_ACTION_FAILED:
1020 res = P2P_SEND_ACTION_FAILED;
1021 break;
1022 }
1023
1024 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1025
1026 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1027 wpa_s->pending_pd_before_join &&
1028 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1029 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1030 wpa_s->p2p_fallback_to_go_neg) {
1031 wpa_s->pending_pd_before_join = 0;
1032 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1033 "during p2p_connect-auto");
1034 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1035 return;
1036 }
1037 }
1038
1039
wpas_send_action_cb(struct wpa_radio_work * work,int deinit)1040 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1041 {
1042 struct wpa_supplicant *wpa_s = work->wpa_s;
1043 struct send_action_work *awork = work->ctx;
1044
1045 if (deinit) {
1046 if (work->started) {
1047 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1048 wpa_s, NULL);
1049 wpa_s->p2p_send_action_work = NULL;
1050 offchannel_send_action_done(wpa_s);
1051 }
1052 os_free(awork);
1053 return;
1054 }
1055
1056 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1057 awork->bssid, awork->buf, awork->len,
1058 awork->wait_time,
1059 wpas_p2p_send_action_tx_status, 1) < 0) {
1060 os_free(awork);
1061 radio_work_done(work);
1062 return;
1063 }
1064 wpa_s->p2p_send_action_work = work;
1065 }
1066
1067
wpas_send_action_work(struct wpa_supplicant * wpa_s,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time)1068 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1069 unsigned int freq, const u8 *dst,
1070 const u8 *src, const u8 *bssid, const u8 *buf,
1071 size_t len, unsigned int wait_time)
1072 {
1073 struct send_action_work *awork;
1074
1075 if (wpa_s->p2p_send_action_work) {
1076 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1077 return -1;
1078 }
1079
1080 awork = os_zalloc(sizeof(*awork) + len);
1081 if (awork == NULL)
1082 return -1;
1083
1084 awork->freq = freq;
1085 os_memcpy(awork->dst, dst, ETH_ALEN);
1086 os_memcpy(awork->src, src, ETH_ALEN);
1087 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1088 awork->len = len;
1089 awork->wait_time = wait_time;
1090 os_memcpy(awork->buf, buf, len);
1091
1092 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1093 wpas_send_action_cb, awork) < 0) {
1094 os_free(awork);
1095 return -1;
1096 }
1097
1098 return 0;
1099 }
1100
1101
wpas_send_action(void * ctx,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time)1102 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1103 const u8 *src, const u8 *bssid, const u8 *buf,
1104 size_t len, unsigned int wait_time)
1105 {
1106 struct wpa_supplicant *wpa_s = ctx;
1107 int listen_freq = -1, send_freq = -1;
1108
1109 if (wpa_s->p2p_listen_work)
1110 listen_freq = wpa_s->p2p_listen_work->freq;
1111 if (wpa_s->p2p_send_action_work)
1112 send_freq = wpa_s->p2p_send_action_work->freq;
1113 if (listen_freq != (int) freq && send_freq != (int) freq) {
1114 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1115 listen_freq, send_freq);
1116 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1117 len, wait_time);
1118 }
1119
1120 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1121 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1122 wait_time,
1123 wpas_p2p_send_action_tx_status, 1);
1124 }
1125
1126
wpas_send_action_done(void * ctx)1127 static void wpas_send_action_done(void *ctx)
1128 {
1129 struct wpa_supplicant *wpa_s = ctx;
1130
1131 if (wpa_s->p2p_send_action_work) {
1132 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1133 wpa_s, NULL);
1134 os_free(wpa_s->p2p_send_action_work->ctx);
1135 radio_work_done(wpa_s->p2p_send_action_work);
1136 wpa_s->p2p_send_action_work = NULL;
1137 }
1138
1139 offchannel_send_action_done(wpa_s);
1140 }
1141
1142
wpas_copy_go_neg_results(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params)1143 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1144 struct p2p_go_neg_results *params)
1145 {
1146 if (wpa_s->go_params == NULL) {
1147 wpa_s->go_params = os_malloc(sizeof(*params));
1148 if (wpa_s->go_params == NULL)
1149 return -1;
1150 }
1151 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1152 return 0;
1153 }
1154
1155
wpas_start_wps_enrollee(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * res)1156 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1157 struct p2p_go_neg_results *res)
1158 {
1159 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1160 " dev_addr " MACSTR " wps_method %d",
1161 MAC2STR(res->peer_interface_addr),
1162 MAC2STR(res->peer_device_addr), res->wps_method);
1163 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1164 res->ssid, res->ssid_len);
1165 wpa_supplicant_ap_deinit(wpa_s);
1166 wpas_copy_go_neg_results(wpa_s, res);
1167 if (res->wps_method == WPS_PBC) {
1168 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1169 #ifdef CONFIG_WPS_NFC
1170 } else if (res->wps_method == WPS_NFC) {
1171 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1172 res->peer_interface_addr,
1173 wpa_s->parent->p2p_oob_dev_pw,
1174 wpa_s->parent->p2p_oob_dev_pw_id, 1,
1175 wpa_s->parent->p2p_oob_dev_pw_id ==
1176 DEV_PW_NFC_CONNECTION_HANDOVER ?
1177 wpa_s->parent->p2p_peer_oob_pubkey_hash :
1178 NULL,
1179 NULL, 0, 0);
1180 #endif /* CONFIG_WPS_NFC */
1181 } else {
1182 u16 dev_pw_id = DEV_PW_DEFAULT;
1183 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1184 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1185 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1186 wpa_s->p2p_pin, 1, dev_pw_id);
1187 }
1188 }
1189
1190
wpas_p2p_add_psk_list(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)1191 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1192 struct wpa_ssid *ssid)
1193 {
1194 struct wpa_ssid *persistent;
1195 struct psk_list_entry *psk;
1196 struct hostapd_data *hapd;
1197
1198 if (!wpa_s->ap_iface)
1199 return;
1200
1201 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1202 ssid->ssid_len);
1203 if (persistent == NULL)
1204 return;
1205
1206 hapd = wpa_s->ap_iface->bss[0];
1207
1208 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1209 list) {
1210 struct hostapd_wpa_psk *hpsk;
1211
1212 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1213 MACSTR " psk=%d",
1214 MAC2STR(psk->addr), psk->p2p);
1215 hpsk = os_zalloc(sizeof(*hpsk));
1216 if (hpsk == NULL)
1217 break;
1218 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1219 if (psk->p2p)
1220 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1221 else
1222 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1223 hpsk->next = hapd->conf->ssid.wpa_psk;
1224 hapd->conf->ssid.wpa_psk = hpsk;
1225 }
1226 }
1227
1228
p2p_go_configured(void * ctx,void * data)1229 static void p2p_go_configured(void *ctx, void *data)
1230 {
1231 struct wpa_supplicant *wpa_s = ctx;
1232 struct p2p_go_neg_results *params = data;
1233 struct wpa_ssid *ssid;
1234 int network_id = -1;
1235
1236 ssid = wpa_s->current_ssid;
1237 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1238 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1239 if (wpa_s->global->p2p_group_formation == wpa_s)
1240 wpa_s->global->p2p_group_formation = NULL;
1241 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1242 params->passphrase[0] == '\0' ?
1243 params->psk : NULL,
1244 params->passphrase,
1245 wpa_s->global->p2p_dev_addr,
1246 params->persistent_group, "");
1247
1248 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1249 if (params->persistent_group) {
1250 network_id = wpas_p2p_store_persistent_group(
1251 wpa_s->parent, ssid,
1252 wpa_s->global->p2p_dev_addr);
1253 wpas_p2p_add_psk_list(wpa_s, ssid);
1254 }
1255 if (network_id < 0)
1256 network_id = ssid->id;
1257 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1258 wpas_p2p_cross_connect_setup(wpa_s);
1259 wpas_p2p_set_group_idle_timeout(wpa_s);
1260
1261 if (wpa_s->p2p_first_connection_timeout) {
1262 wpa_dbg(wpa_s, MSG_DEBUG,
1263 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1264 wpa_s->p2p_first_connection_timeout);
1265 wpa_s->p2p_go_group_formation_completed = 0;
1266 wpa_s->global->p2p_group_formation = wpa_s;
1267 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1268 wpa_s->parent, NULL);
1269 eloop_register_timeout(
1270 wpa_s->p2p_first_connection_timeout, 0,
1271 wpas_p2p_group_formation_timeout,
1272 wpa_s->parent, NULL);
1273 }
1274
1275 return;
1276 }
1277
1278 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1279 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1280 params->peer_interface_addr)) {
1281 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1282 "filtering");
1283 return;
1284 }
1285 if (params->wps_method == WPS_PBC) {
1286 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1287 params->peer_device_addr);
1288 #ifdef CONFIG_WPS_NFC
1289 } else if (params->wps_method == WPS_NFC) {
1290 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1291 DEV_PW_NFC_CONNECTION_HANDOVER &&
1292 !wpa_s->parent->p2p_oob_dev_pw) {
1293 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1294 return;
1295 }
1296 wpas_ap_wps_add_nfc_pw(
1297 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1298 wpa_s->parent->p2p_oob_dev_pw,
1299 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1300 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1301 #endif /* CONFIG_WPS_NFC */
1302 } else if (wpa_s->p2p_pin[0])
1303 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1304 wpa_s->p2p_pin, NULL, 0, 0);
1305 os_free(wpa_s->go_params);
1306 wpa_s->go_params = NULL;
1307 }
1308
1309
wpas_start_wps_go(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,int group_formation)1310 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1311 struct p2p_go_neg_results *params,
1312 int group_formation)
1313 {
1314 struct wpa_ssid *ssid;
1315
1316 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1317 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1318 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1319 "results");
1320 return;
1321 }
1322
1323 ssid = wpa_config_add_network(wpa_s->conf);
1324 if (ssid == NULL) {
1325 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1326 return;
1327 }
1328
1329 wpa_s->show_group_started = 0;
1330
1331 wpa_config_set_network_defaults(ssid);
1332 ssid->temporary = 1;
1333 ssid->p2p_group = 1;
1334 ssid->p2p_persistent_group = params->persistent_group;
1335 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1336 WPAS_MODE_P2P_GO;
1337 ssid->frequency = params->freq;
1338 ssid->ht40 = params->ht40;
1339 ssid->vht = params->vht;
1340 ssid->ssid = os_zalloc(params->ssid_len + 1);
1341 if (ssid->ssid) {
1342 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1343 ssid->ssid_len = params->ssid_len;
1344 }
1345 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1346 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1347 ssid->proto = WPA_PROTO_RSN;
1348 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1349 if (os_strlen(params->passphrase) > 0) {
1350 ssid->passphrase = os_strdup(params->passphrase);
1351 if (ssid->passphrase == NULL) {
1352 wpa_msg_global(wpa_s, MSG_ERROR,
1353 "P2P: Failed to copy passphrase for GO");
1354 wpa_config_remove_network(wpa_s->conf, ssid->id);
1355 return;
1356 }
1357 } else
1358 ssid->passphrase = NULL;
1359 ssid->psk_set = params->psk_set;
1360 if (ssid->psk_set)
1361 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1362 else if (ssid->passphrase)
1363 wpa_config_update_psk(ssid);
1364 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1365
1366 wpa_s->ap_configured_cb = p2p_go_configured;
1367 wpa_s->ap_configured_cb_ctx = wpa_s;
1368 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1369 wpa_s->scan_req = NORMAL_SCAN_REQ;
1370 wpa_s->connect_without_scan = ssid;
1371 wpa_s->reassociate = 1;
1372 wpa_s->disconnected = 0;
1373 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1374 "start GO)");
1375 wpa_supplicant_req_scan(wpa_s, 0, 0);
1376 }
1377
1378
wpas_p2p_clone_config(struct wpa_supplicant * dst,const struct wpa_supplicant * src)1379 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1380 const struct wpa_supplicant *src)
1381 {
1382 struct wpa_config *d;
1383 const struct wpa_config *s;
1384
1385 d = dst->conf;
1386 s = src->conf;
1387
1388 #define C(n) if (s->n) d->n = os_strdup(s->n)
1389 C(device_name);
1390 C(manufacturer);
1391 C(model_name);
1392 C(model_number);
1393 C(serial_number);
1394 C(config_methods);
1395 #undef C
1396
1397 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1398 os_memcpy(d->sec_device_type, s->sec_device_type,
1399 sizeof(d->sec_device_type));
1400 d->num_sec_device_types = s->num_sec_device_types;
1401
1402 d->p2p_group_idle = s->p2p_group_idle;
1403 d->p2p_intra_bss = s->p2p_intra_bss;
1404 d->persistent_reconnect = s->persistent_reconnect;
1405 d->max_num_sta = s->max_num_sta;
1406 d->pbc_in_m1 = s->pbc_in_m1;
1407 d->ignore_old_scan_res = s->ignore_old_scan_res;
1408 d->beacon_int = s->beacon_int;
1409 d->dtim_period = s->dtim_period;
1410 d->disassoc_low_ack = s->disassoc_low_ack;
1411 d->disable_scan_offload = s->disable_scan_offload;
1412
1413 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1414 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1415 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1416 }
1417 }
1418
1419
wpas_p2p_get_group_ifname(struct wpa_supplicant * wpa_s,char * ifname,size_t len)1420 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1421 char *ifname, size_t len)
1422 {
1423 char *ifname_ptr = wpa_s->ifname;
1424
1425 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1426 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1427 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1428 }
1429
1430 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1431 if (os_strlen(ifname) >= IFNAMSIZ &&
1432 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1433 /* Try to avoid going over the IFNAMSIZ length limit */
1434 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1435 }
1436 }
1437
1438
wpas_p2p_add_group_interface(struct wpa_supplicant * wpa_s,enum wpa_driver_if_type type)1439 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1440 enum wpa_driver_if_type type)
1441 {
1442 char ifname[120], force_ifname[120];
1443
1444 if (wpa_s->pending_interface_name[0]) {
1445 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1446 "- skip creation of a new one");
1447 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1448 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1449 "unknown?! ifname='%s'",
1450 wpa_s->pending_interface_name);
1451 return -1;
1452 }
1453 return 0;
1454 }
1455
1456 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1457 force_ifname[0] = '\0';
1458
1459 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1460 ifname);
1461 wpa_s->p2p_group_idx++;
1462
1463 wpa_s->pending_interface_type = type;
1464 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1465 wpa_s->pending_interface_addr, NULL) < 0) {
1466 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1467 "interface");
1468 return -1;
1469 }
1470
1471 if (force_ifname[0]) {
1472 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1473 force_ifname);
1474 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1475 sizeof(wpa_s->pending_interface_name));
1476 } else
1477 os_strlcpy(wpa_s->pending_interface_name, ifname,
1478 sizeof(wpa_s->pending_interface_name));
1479 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1480 MACSTR, wpa_s->pending_interface_name,
1481 MAC2STR(wpa_s->pending_interface_addr));
1482
1483 return 0;
1484 }
1485
1486
wpas_p2p_remove_pending_group_interface(struct wpa_supplicant * wpa_s)1487 static void wpas_p2p_remove_pending_group_interface(
1488 struct wpa_supplicant *wpa_s)
1489 {
1490 if (!wpa_s->pending_interface_name[0] ||
1491 is_zero_ether_addr(wpa_s->pending_interface_addr))
1492 return; /* No pending virtual interface */
1493
1494 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1495 wpa_s->pending_interface_name);
1496 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1497 wpa_s->pending_interface_name);
1498 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1499 wpa_s->pending_interface_name[0] = '\0';
1500 }
1501
1502
1503 static struct wpa_supplicant *
wpas_p2p_init_group_interface(struct wpa_supplicant * wpa_s,int go)1504 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1505 {
1506 struct wpa_interface iface;
1507 struct wpa_supplicant *group_wpa_s;
1508
1509 if (!wpa_s->pending_interface_name[0]) {
1510 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1511 if (!wpas_p2p_create_iface(wpa_s))
1512 return NULL;
1513 /*
1514 * Something has forced us to remove the pending interface; try
1515 * to create a new one and hope for the best that we will get
1516 * the same local address.
1517 */
1518 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1519 WPA_IF_P2P_CLIENT) < 0)
1520 return NULL;
1521 }
1522
1523 os_memset(&iface, 0, sizeof(iface));
1524 iface.ifname = wpa_s->pending_interface_name;
1525 iface.driver = wpa_s->driver->name;
1526 if (wpa_s->conf->ctrl_interface == NULL &&
1527 wpa_s->parent != wpa_s &&
1528 wpa_s->p2p_mgmt &&
1529 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1530 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1531 else
1532 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1533 iface.driver_param = wpa_s->conf->driver_param;
1534 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1535 if (group_wpa_s == NULL) {
1536 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1537 "wpa_supplicant interface");
1538 return NULL;
1539 }
1540 wpa_s->pending_interface_name[0] = '\0';
1541 group_wpa_s->parent = wpa_s;
1542 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1543 P2P_GROUP_INTERFACE_CLIENT;
1544 wpa_s->global->p2p_group_formation = group_wpa_s;
1545
1546 wpas_p2p_clone_config(group_wpa_s, wpa_s);
1547
1548 return group_wpa_s;
1549 }
1550
1551
wpas_p2p_group_formation_timeout(void * eloop_ctx,void * timeout_ctx)1552 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1553 void *timeout_ctx)
1554 {
1555 struct wpa_supplicant *wpa_s = eloop_ctx;
1556 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1557 wpas_p2p_group_formation_failed(wpa_s);
1558 }
1559
1560
wpas_p2p_group_formation_failed(struct wpa_supplicant * wpa_s)1561 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1562 {
1563 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1564 wpa_s->parent, NULL);
1565 if (wpa_s->global->p2p)
1566 p2p_group_formation_failed(wpa_s->global->p2p);
1567 wpas_group_formation_completed(wpa_s, 0);
1568 }
1569
1570
wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant * wpa_s)1571 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1572 {
1573 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1574 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1575 wpa_s->parent, NULL);
1576 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1577 wpa_s->parent, NULL);
1578 wpa_s->global->p2p_fail_on_wps_complete = 0;
1579 }
1580
1581
wpas_p2p_ap_setup_failed(struct wpa_supplicant * wpa_s)1582 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1583 {
1584 if (wpa_s->global->p2p_group_formation != wpa_s)
1585 return;
1586 /* Speed up group formation timeout since this cannot succeed */
1587 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1588 wpa_s->parent, NULL);
1589 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1590 wpa_s->parent, NULL);
1591 }
1592
1593
wpas_go_neg_completed(void * ctx,struct p2p_go_neg_results * res)1594 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1595 {
1596 struct wpa_supplicant *wpa_s = ctx;
1597
1598 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1599 wpa_drv_cancel_remain_on_channel(wpa_s);
1600 wpa_s->off_channel_freq = 0;
1601 wpa_s->roc_waiting_drv_freq = 0;
1602 }
1603
1604 if (res->status) {
1605 wpa_msg_global(wpa_s, MSG_INFO,
1606 P2P_EVENT_GO_NEG_FAILURE "status=%d",
1607 res->status);
1608 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1609 wpas_p2p_remove_pending_group_interface(wpa_s);
1610 return;
1611 }
1612
1613 if (wpa_s->p2p_go_ht40)
1614 res->ht40 = 1;
1615 if (wpa_s->p2p_go_vht)
1616 res->vht = 1;
1617
1618 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1619 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1620 " wps_method=%s",
1621 res->role_go ? "GO" : "client", res->freq, res->ht40,
1622 MAC2STR(res->peer_device_addr),
1623 MAC2STR(res->peer_interface_addr),
1624 p2p_wps_method_text(res->wps_method));
1625 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1626
1627 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1628 struct wpa_ssid *ssid;
1629 ssid = wpa_config_get_network(wpa_s->conf,
1630 wpa_s->p2p_persistent_id);
1631 if (ssid && ssid->disabled == 2 &&
1632 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1633 size_t len = os_strlen(ssid->passphrase);
1634 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1635 "on requested persistent group");
1636 os_memcpy(res->passphrase, ssid->passphrase, len);
1637 res->passphrase[len] = '\0';
1638 }
1639 }
1640
1641 if (wpa_s->create_p2p_iface) {
1642 struct wpa_supplicant *group_wpa_s =
1643 wpas_p2p_init_group_interface(wpa_s, res->role_go);
1644 if (group_wpa_s == NULL) {
1645 wpas_p2p_remove_pending_group_interface(wpa_s);
1646 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1647 wpa_s, NULL);
1648 wpas_p2p_group_formation_failed(wpa_s);
1649 return;
1650 }
1651 if (group_wpa_s != wpa_s) {
1652 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1653 sizeof(group_wpa_s->p2p_pin));
1654 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1655 }
1656 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1657 wpa_s->pending_interface_name[0] = '\0';
1658 group_wpa_s->p2p_in_provisioning = 1;
1659
1660 if (res->role_go)
1661 wpas_start_wps_go(group_wpa_s, res, 1);
1662 else
1663 wpas_start_wps_enrollee(group_wpa_s, res);
1664 } else {
1665 wpa_s->p2p_in_provisioning = 1;
1666 wpa_s->global->p2p_group_formation = wpa_s;
1667
1668 if (res->role_go)
1669 wpas_start_wps_go(wpa_s, res, 1);
1670 else
1671 wpas_start_wps_enrollee(ctx, res);
1672 }
1673
1674 wpa_s->p2p_long_listen = 0;
1675 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1676
1677 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1678 eloop_register_timeout(15 + res->peer_config_timeout / 100,
1679 (res->peer_config_timeout % 100) * 10000,
1680 wpas_p2p_group_formation_timeout, wpa_s, NULL);
1681 }
1682
1683
wpas_go_neg_req_rx(void * ctx,const u8 * src,u16 dev_passwd_id)1684 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1685 {
1686 struct wpa_supplicant *wpa_s = ctx;
1687 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1688 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1689
1690 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1691 }
1692
1693
wpas_dev_found(void * ctx,const u8 * addr,const struct p2p_peer_info * info,int new_device)1694 static void wpas_dev_found(void *ctx, const u8 *addr,
1695 const struct p2p_peer_info *info,
1696 int new_device)
1697 {
1698 #ifndef CONFIG_NO_STDOUT_DEBUG
1699 struct wpa_supplicant *wpa_s = ctx;
1700 char devtype[WPS_DEV_TYPE_BUFSIZE];
1701 char *wfd_dev_info_hex = NULL;
1702
1703 #ifdef CONFIG_WIFI_DISPLAY
1704 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1705 WFD_SUBELEM_DEVICE_INFO);
1706 #endif /* CONFIG_WIFI_DISPLAY */
1707
1708 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1709 " p2p_dev_addr=" MACSTR
1710 " pri_dev_type=%s name='%s' config_methods=0x%x "
1711 "dev_capab=0x%x group_capab=0x%x%s%s%s",
1712 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1713 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1714 sizeof(devtype)),
1715 info->device_name, info->config_methods,
1716 info->dev_capab, info->group_capab,
1717 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1718 wfd_dev_info_hex ? wfd_dev_info_hex : "",
1719 info->vendor_elems ? " vendor_elems=1" : "");
1720
1721 os_free(wfd_dev_info_hex);
1722 #endif /* CONFIG_NO_STDOUT_DEBUG */
1723
1724 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1725 }
1726
1727
wpas_dev_lost(void * ctx,const u8 * dev_addr)1728 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1729 {
1730 struct wpa_supplicant *wpa_s = ctx;
1731
1732 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1733 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1734
1735 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1736 }
1737
1738
wpas_find_stopped(void * ctx)1739 static void wpas_find_stopped(void *ctx)
1740 {
1741 struct wpa_supplicant *wpa_s = ctx;
1742 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1743 }
1744
1745
1746 struct wpas_p2p_listen_work {
1747 unsigned int freq;
1748 unsigned int duration;
1749 struct wpabuf *probe_resp_ie;
1750 };
1751
1752
wpas_p2p_listen_work_free(struct wpas_p2p_listen_work * lwork)1753 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1754 {
1755 if (lwork == NULL)
1756 return;
1757 wpabuf_free(lwork->probe_resp_ie);
1758 os_free(lwork);
1759 }
1760
1761
wpas_p2p_listen_work_done(struct wpa_supplicant * wpa_s)1762 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1763 {
1764 struct wpas_p2p_listen_work *lwork;
1765
1766 if (!wpa_s->p2p_listen_work)
1767 return;
1768
1769 lwork = wpa_s->p2p_listen_work->ctx;
1770 wpas_p2p_listen_work_free(lwork);
1771 radio_work_done(wpa_s->p2p_listen_work);
1772 wpa_s->p2p_listen_work = NULL;
1773 }
1774
1775
wpas_start_listen_cb(struct wpa_radio_work * work,int deinit)1776 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1777 {
1778 struct wpa_supplicant *wpa_s = work->wpa_s;
1779 struct wpas_p2p_listen_work *lwork = work->ctx;
1780
1781 if (deinit) {
1782 if (work->started) {
1783 wpa_s->p2p_listen_work = NULL;
1784 wpas_stop_listen(wpa_s);
1785 }
1786 wpas_p2p_listen_work_free(lwork);
1787 return;
1788 }
1789
1790 wpa_s->p2p_listen_work = work;
1791
1792 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1793
1794 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1795 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1796 "report received Probe Request frames");
1797 wpas_p2p_listen_work_done(wpa_s);
1798 return;
1799 }
1800
1801 wpa_s->pending_listen_freq = lwork->freq;
1802 wpa_s->pending_listen_duration = lwork->duration;
1803
1804 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1805 {
1806 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1807 "to remain on channel (%u MHz) for Listen "
1808 "state", lwork->freq);
1809 wpas_p2p_listen_work_done(wpa_s);
1810 wpa_s->pending_listen_freq = 0;
1811 return;
1812 }
1813 wpa_s->off_channel_freq = 0;
1814 wpa_s->roc_waiting_drv_freq = lwork->freq;
1815 }
1816
1817
wpas_start_listen(void * ctx,unsigned int freq,unsigned int duration,const struct wpabuf * probe_resp_ie)1818 static int wpas_start_listen(void *ctx, unsigned int freq,
1819 unsigned int duration,
1820 const struct wpabuf *probe_resp_ie)
1821 {
1822 struct wpa_supplicant *wpa_s = ctx;
1823 struct wpas_p2p_listen_work *lwork;
1824
1825 if (wpa_s->p2p_listen_work) {
1826 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1827 return -1;
1828 }
1829
1830 lwork = os_zalloc(sizeof(*lwork));
1831 if (lwork == NULL)
1832 return -1;
1833 lwork->freq = freq;
1834 lwork->duration = duration;
1835 if (probe_resp_ie) {
1836 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1837 if (lwork->probe_resp_ie == NULL) {
1838 wpas_p2p_listen_work_free(lwork);
1839 return -1;
1840 }
1841 }
1842
1843 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1844 lwork) < 0) {
1845 wpas_p2p_listen_work_free(lwork);
1846 return -1;
1847 }
1848
1849 return 0;
1850 }
1851
1852
wpas_stop_listen(void * ctx)1853 static void wpas_stop_listen(void *ctx)
1854 {
1855 struct wpa_supplicant *wpa_s = ctx;
1856 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1857 wpa_drv_cancel_remain_on_channel(wpa_s);
1858 wpa_s->off_channel_freq = 0;
1859 wpa_s->roc_waiting_drv_freq = 0;
1860 }
1861 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1862 wpa_drv_probe_req_report(wpa_s, 0);
1863 wpas_p2p_listen_work_done(wpa_s);
1864 }
1865
1866
wpas_send_probe_resp(void * ctx,const struct wpabuf * buf)1867 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1868 {
1869 struct wpa_supplicant *wpa_s = ctx;
1870 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1871 }
1872
1873
1874 /*
1875 * DNS Header section is used only to calculate compression pointers, so the
1876 * contents of this data does not matter, but the length needs to be reserved
1877 * in the virtual packet.
1878 */
1879 #define DNS_HEADER_LEN 12
1880
1881 /*
1882 * 27-octet in-memory packet from P2P specification containing two implied
1883 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1884 */
1885 #define P2P_SD_IN_MEMORY_LEN 27
1886
p2p_sd_dns_uncompress_label(char ** upos,char * uend,u8 * start,u8 ** spos,const u8 * end)1887 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1888 u8 **spos, const u8 *end)
1889 {
1890 while (*spos < end) {
1891 u8 val = ((*spos)[0] & 0xc0) >> 6;
1892 int len;
1893
1894 if (val == 1 || val == 2) {
1895 /* These are reserved values in RFC 1035 */
1896 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1897 "sequence starting with 0x%x", val);
1898 return -1;
1899 }
1900
1901 if (val == 3) {
1902 u16 offset;
1903 u8 *spos_tmp;
1904
1905 /* Offset */
1906 if (*spos + 2 > end) {
1907 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1908 "DNS offset field");
1909 return -1;
1910 }
1911
1912 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1913 if (offset >= *spos - start) {
1914 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1915 "pointer offset %u", offset);
1916 return -1;
1917 }
1918
1919 (*spos) += 2;
1920 spos_tmp = start + offset;
1921 return p2p_sd_dns_uncompress_label(upos, uend, start,
1922 &spos_tmp,
1923 *spos - 2);
1924 }
1925
1926 /* Label */
1927 len = (*spos)[0] & 0x3f;
1928 if (len == 0)
1929 return 0;
1930
1931 (*spos)++;
1932 if (*spos + len > end) {
1933 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1934 "sequence - no room for label with length "
1935 "%u", len);
1936 return -1;
1937 }
1938
1939 if (*upos + len + 2 > uend)
1940 return -2;
1941
1942 os_memcpy(*upos, *spos, len);
1943 *spos += len;
1944 *upos += len;
1945 (*upos)[0] = '.';
1946 (*upos)++;
1947 (*upos)[0] = '\0';
1948 }
1949
1950 return 0;
1951 }
1952
1953
1954 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1955 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1956 * not large enough */
p2p_sd_dns_uncompress(char * buf,size_t buf_len,const u8 * msg,size_t msg_len,size_t offset)1957 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1958 size_t msg_len, size_t offset)
1959 {
1960 /* 27-octet in-memory packet from P2P specification */
1961 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1962 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1963 u8 *tmp, *end, *spos;
1964 char *upos, *uend;
1965 int ret = 0;
1966
1967 if (buf_len < 2)
1968 return -1;
1969 if (offset > msg_len)
1970 return -1;
1971
1972 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1973 if (tmp == NULL)
1974 return -1;
1975 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1976 end = spos + msg_len;
1977 spos += offset;
1978
1979 os_memset(tmp, 0, DNS_HEADER_LEN);
1980 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1981 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1982
1983 upos = buf;
1984 uend = buf + buf_len;
1985
1986 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1987 if (ret) {
1988 os_free(tmp);
1989 return ret;
1990 }
1991
1992 if (upos == buf) {
1993 upos[0] = '.';
1994 upos[1] = '\0';
1995 } else if (upos[-1] == '.')
1996 upos[-1] = '\0';
1997
1998 os_free(tmp);
1999 return 0;
2000 }
2001
2002
2003 static struct p2p_srv_bonjour *
wpas_p2p_service_get_bonjour(struct wpa_supplicant * wpa_s,const struct wpabuf * query)2004 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
2005 const struct wpabuf *query)
2006 {
2007 struct p2p_srv_bonjour *bsrv;
2008 size_t len;
2009
2010 len = wpabuf_len(query);
2011 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2012 struct p2p_srv_bonjour, list) {
2013 if (len == wpabuf_len(bsrv->query) &&
2014 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
2015 len) == 0)
2016 return bsrv;
2017 }
2018 return NULL;
2019 }
2020
2021
2022 static struct p2p_srv_upnp *
wpas_p2p_service_get_upnp(struct wpa_supplicant * wpa_s,u8 version,const char * service)2023 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2024 const char *service)
2025 {
2026 struct p2p_srv_upnp *usrv;
2027
2028 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2029 struct p2p_srv_upnp, list) {
2030 if (version == usrv->version &&
2031 os_strcmp(service, usrv->service) == 0)
2032 return usrv;
2033 }
2034 return NULL;
2035 }
2036
2037
wpas_sd_add_proto_not_avail(struct wpabuf * resp,u8 srv_proto,u8 srv_trans_id)2038 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2039 u8 srv_trans_id)
2040 {
2041 u8 *len_pos;
2042
2043 if (wpabuf_tailroom(resp) < 5)
2044 return;
2045
2046 /* Length (to be filled) */
2047 len_pos = wpabuf_put(resp, 2);
2048 wpabuf_put_u8(resp, srv_proto);
2049 wpabuf_put_u8(resp, srv_trans_id);
2050 /* Status Code */
2051 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2052 /* Response Data: empty */
2053 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2054 }
2055
2056
wpas_sd_all_bonjour(struct wpa_supplicant * wpa_s,struct wpabuf * resp,u8 srv_trans_id)2057 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2058 struct wpabuf *resp, u8 srv_trans_id)
2059 {
2060 struct p2p_srv_bonjour *bsrv;
2061 u8 *len_pos;
2062
2063 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2064
2065 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2066 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2067 return;
2068 }
2069
2070 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2071 struct p2p_srv_bonjour, list) {
2072 if (wpabuf_tailroom(resp) <
2073 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2074 return;
2075 /* Length (to be filled) */
2076 len_pos = wpabuf_put(resp, 2);
2077 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2078 wpabuf_put_u8(resp, srv_trans_id);
2079 /* Status Code */
2080 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2081 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2082 wpabuf_head(bsrv->resp),
2083 wpabuf_len(bsrv->resp));
2084 /* Response Data */
2085 wpabuf_put_buf(resp, bsrv->query); /* Key */
2086 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2087 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2088 2);
2089 }
2090 }
2091
2092
match_bonjour_query(struct p2p_srv_bonjour * bsrv,const u8 * query,size_t query_len)2093 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2094 size_t query_len)
2095 {
2096 char str_rx[256], str_srv[256];
2097
2098 if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2099 return 0; /* Too short to include DNS Type and Version */
2100 if (os_memcmp(query + query_len - 3,
2101 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2102 3) != 0)
2103 return 0; /* Mismatch in DNS Type or Version */
2104 if (query_len == wpabuf_len(bsrv->query) &&
2105 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2106 return 1; /* Binary match */
2107
2108 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2109 0))
2110 return 0; /* Failed to uncompress query */
2111 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2112 wpabuf_head(bsrv->query),
2113 wpabuf_len(bsrv->query) - 3, 0))
2114 return 0; /* Failed to uncompress service */
2115
2116 return os_strcmp(str_rx, str_srv) == 0;
2117 }
2118
2119
wpas_sd_req_bonjour(struct wpa_supplicant * wpa_s,struct wpabuf * resp,u8 srv_trans_id,const u8 * query,size_t query_len)2120 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2121 struct wpabuf *resp, u8 srv_trans_id,
2122 const u8 *query, size_t query_len)
2123 {
2124 struct p2p_srv_bonjour *bsrv;
2125 u8 *len_pos;
2126 int matches = 0;
2127
2128 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2129 query, query_len);
2130 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2131 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2132 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2133 srv_trans_id);
2134 return;
2135 }
2136
2137 if (query_len == 0) {
2138 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2139 return;
2140 }
2141
2142 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2143 struct p2p_srv_bonjour, list) {
2144 if (!match_bonjour_query(bsrv, query, query_len))
2145 continue;
2146
2147 if (wpabuf_tailroom(resp) <
2148 5 + query_len + wpabuf_len(bsrv->resp))
2149 return;
2150
2151 matches++;
2152
2153 /* Length (to be filled) */
2154 len_pos = wpabuf_put(resp, 2);
2155 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2156 wpabuf_put_u8(resp, srv_trans_id);
2157
2158 /* Status Code */
2159 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2160 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2161 wpabuf_head(bsrv->resp),
2162 wpabuf_len(bsrv->resp));
2163
2164 /* Response Data */
2165 wpabuf_put_data(resp, query, query_len); /* Key */
2166 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2167
2168 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2169 }
2170
2171 if (matches == 0) {
2172 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2173 "available");
2174 if (wpabuf_tailroom(resp) < 5)
2175 return;
2176
2177 /* Length (to be filled) */
2178 len_pos = wpabuf_put(resp, 2);
2179 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2180 wpabuf_put_u8(resp, srv_trans_id);
2181
2182 /* Status Code */
2183 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2184 /* Response Data: empty */
2185 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2186 2);
2187 }
2188 }
2189
2190
wpas_sd_all_upnp(struct wpa_supplicant * wpa_s,struct wpabuf * resp,u8 srv_trans_id)2191 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2192 struct wpabuf *resp, u8 srv_trans_id)
2193 {
2194 struct p2p_srv_upnp *usrv;
2195 u8 *len_pos;
2196
2197 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2198
2199 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2200 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2201 return;
2202 }
2203
2204 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2205 struct p2p_srv_upnp, list) {
2206 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2207 return;
2208
2209 /* Length (to be filled) */
2210 len_pos = wpabuf_put(resp, 2);
2211 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2212 wpabuf_put_u8(resp, srv_trans_id);
2213
2214 /* Status Code */
2215 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2216 /* Response Data */
2217 wpabuf_put_u8(resp, usrv->version);
2218 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2219 usrv->service);
2220 wpabuf_put_str(resp, usrv->service);
2221 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2222 2);
2223 }
2224 }
2225
2226
wpas_sd_req_upnp(struct wpa_supplicant * wpa_s,struct wpabuf * resp,u8 srv_trans_id,const u8 * query,size_t query_len)2227 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2228 struct wpabuf *resp, u8 srv_trans_id,
2229 const u8 *query, size_t query_len)
2230 {
2231 struct p2p_srv_upnp *usrv;
2232 u8 *len_pos;
2233 u8 version;
2234 char *str;
2235 int count = 0;
2236
2237 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2238 query, query_len);
2239
2240 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2241 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2242 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2243 srv_trans_id);
2244 return;
2245 }
2246
2247 if (query_len == 0) {
2248 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2249 return;
2250 }
2251
2252 if (wpabuf_tailroom(resp) < 5)
2253 return;
2254
2255 /* Length (to be filled) */
2256 len_pos = wpabuf_put(resp, 2);
2257 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2258 wpabuf_put_u8(resp, srv_trans_id);
2259
2260 version = query[0];
2261 str = os_malloc(query_len);
2262 if (str == NULL)
2263 return;
2264 os_memcpy(str, query + 1, query_len - 1);
2265 str[query_len - 1] = '\0';
2266
2267 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2268 struct p2p_srv_upnp, list) {
2269 if (version != usrv->version)
2270 continue;
2271
2272 if (os_strcmp(str, "ssdp:all") != 0 &&
2273 os_strstr(usrv->service, str) == NULL)
2274 continue;
2275
2276 if (wpabuf_tailroom(resp) < 2)
2277 break;
2278 if (count == 0) {
2279 /* Status Code */
2280 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2281 /* Response Data */
2282 wpabuf_put_u8(resp, version);
2283 } else
2284 wpabuf_put_u8(resp, ',');
2285
2286 count++;
2287
2288 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2289 usrv->service);
2290 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2291 break;
2292 wpabuf_put_str(resp, usrv->service);
2293 }
2294 os_free(str);
2295
2296 if (count == 0) {
2297 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2298 "available");
2299 /* Status Code */
2300 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2301 /* Response Data: empty */
2302 }
2303
2304 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2305 }
2306
2307
2308 #ifdef CONFIG_WIFI_DISPLAY
wpas_sd_req_wfd(struct wpa_supplicant * wpa_s,struct wpabuf * resp,u8 srv_trans_id,const u8 * query,size_t query_len)2309 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2310 struct wpabuf *resp, u8 srv_trans_id,
2311 const u8 *query, size_t query_len)
2312 {
2313 const u8 *pos;
2314 u8 role;
2315 u8 *len_pos;
2316
2317 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2318
2319 if (!wpa_s->global->wifi_display) {
2320 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2321 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2322 srv_trans_id);
2323 return;
2324 }
2325
2326 if (query_len < 1) {
2327 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2328 "Role");
2329 return;
2330 }
2331
2332 if (wpabuf_tailroom(resp) < 5)
2333 return;
2334
2335 pos = query;
2336 role = *pos++;
2337 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2338
2339 /* TODO: role specific handling */
2340
2341 /* Length (to be filled) */
2342 len_pos = wpabuf_put(resp, 2);
2343 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2344 wpabuf_put_u8(resp, srv_trans_id);
2345 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2346
2347 while (pos < query + query_len) {
2348 if (*pos < MAX_WFD_SUBELEMS &&
2349 wpa_s->global->wfd_subelem[*pos] &&
2350 wpabuf_tailroom(resp) >=
2351 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2352 wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2353 "subelement %u", *pos);
2354 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2355 }
2356 pos++;
2357 }
2358
2359 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2360 }
2361 #endif /* CONFIG_WIFI_DISPLAY */
2362
2363
wpas_sd_request(void * ctx,int freq,const u8 * sa,u8 dialog_token,u16 update_indic,const u8 * tlvs,size_t tlvs_len)2364 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2365 u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2366 {
2367 struct wpa_supplicant *wpa_s = ctx;
2368 const u8 *pos = tlvs;
2369 const u8 *end = tlvs + tlvs_len;
2370 const u8 *tlv_end;
2371 u16 slen;
2372 struct wpabuf *resp;
2373 u8 srv_proto, srv_trans_id;
2374 size_t buf_len;
2375 char *buf;
2376
2377 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2378 tlvs, tlvs_len);
2379 buf_len = 2 * tlvs_len + 1;
2380 buf = os_malloc(buf_len);
2381 if (buf) {
2382 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2383 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2384 MACSTR " %u %u %s",
2385 freq, MAC2STR(sa), dialog_token, update_indic,
2386 buf);
2387 os_free(buf);
2388 }
2389
2390 if (wpa_s->p2p_sd_over_ctrl_iface) {
2391 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2392 update_indic, tlvs, tlvs_len);
2393 return; /* to be processed by an external program */
2394 }
2395
2396 resp = wpabuf_alloc(10000);
2397 if (resp == NULL)
2398 return;
2399
2400 while (pos + 1 < end) {
2401 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2402 slen = WPA_GET_LE16(pos);
2403 pos += 2;
2404 if (pos + slen > end || slen < 2) {
2405 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2406 "length");
2407 wpabuf_free(resp);
2408 return;
2409 }
2410 tlv_end = pos + slen;
2411
2412 srv_proto = *pos++;
2413 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2414 srv_proto);
2415 srv_trans_id = *pos++;
2416 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2417 srv_trans_id);
2418
2419 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2420 pos, tlv_end - pos);
2421
2422
2423 if (wpa_s->force_long_sd) {
2424 wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2425 "response");
2426 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2427 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2428 goto done;
2429 }
2430
2431 switch (srv_proto) {
2432 case P2P_SERV_ALL_SERVICES:
2433 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2434 "for all services");
2435 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2436 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2437 wpa_printf(MSG_DEBUG, "P2P: No service "
2438 "discovery protocols available");
2439 wpas_sd_add_proto_not_avail(
2440 resp, P2P_SERV_ALL_SERVICES,
2441 srv_trans_id);
2442 break;
2443 }
2444 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2445 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2446 break;
2447 case P2P_SERV_BONJOUR:
2448 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2449 pos, tlv_end - pos);
2450 break;
2451 case P2P_SERV_UPNP:
2452 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2453 pos, tlv_end - pos);
2454 break;
2455 #ifdef CONFIG_WIFI_DISPLAY
2456 case P2P_SERV_WIFI_DISPLAY:
2457 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2458 pos, tlv_end - pos);
2459 break;
2460 #endif /* CONFIG_WIFI_DISPLAY */
2461 default:
2462 wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2463 "protocol %u", srv_proto);
2464 wpas_sd_add_proto_not_avail(resp, srv_proto,
2465 srv_trans_id);
2466 break;
2467 }
2468
2469 pos = tlv_end;
2470 }
2471
2472 done:
2473 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2474 update_indic, tlvs, tlvs_len);
2475
2476 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2477
2478 wpabuf_free(resp);
2479 }
2480
2481
wpas_sd_response(void * ctx,const u8 * sa,u16 update_indic,const u8 * tlvs,size_t tlvs_len)2482 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2483 const u8 *tlvs, size_t tlvs_len)
2484 {
2485 struct wpa_supplicant *wpa_s = ctx;
2486 const u8 *pos = tlvs;
2487 const u8 *end = tlvs + tlvs_len;
2488 const u8 *tlv_end;
2489 u16 slen;
2490 size_t buf_len;
2491 char *buf;
2492
2493 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2494 tlvs, tlvs_len);
2495 if (tlvs_len > 1500) {
2496 /* TODO: better way for handling this */
2497 wpa_msg_ctrl(wpa_s, MSG_INFO,
2498 P2P_EVENT_SERV_DISC_RESP MACSTR
2499 " %u <long response: %u bytes>",
2500 MAC2STR(sa), update_indic,
2501 (unsigned int) tlvs_len);
2502 } else {
2503 buf_len = 2 * tlvs_len + 1;
2504 buf = os_malloc(buf_len);
2505 if (buf) {
2506 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2507 wpa_msg_ctrl(wpa_s, MSG_INFO,
2508 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2509 MAC2STR(sa), update_indic, buf);
2510 os_free(buf);
2511 }
2512 }
2513
2514 while (pos < end) {
2515 u8 srv_proto, srv_trans_id, status;
2516
2517 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2518 slen = WPA_GET_LE16(pos);
2519 pos += 2;
2520 if (pos + slen > end || slen < 3) {
2521 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2522 "length");
2523 return;
2524 }
2525 tlv_end = pos + slen;
2526
2527 srv_proto = *pos++;
2528 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2529 srv_proto);
2530 srv_trans_id = *pos++;
2531 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2532 srv_trans_id);
2533 status = *pos++;
2534 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2535 status);
2536
2537 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2538 pos, tlv_end - pos);
2539
2540 pos = tlv_end;
2541 }
2542
2543 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2544 }
2545
2546
wpas_p2p_sd_request(struct wpa_supplicant * wpa_s,const u8 * dst,const struct wpabuf * tlvs)2547 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2548 const struct wpabuf *tlvs)
2549 {
2550 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2551 return 0;
2552 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2553 }
2554
2555
wpas_p2p_sd_request_upnp(struct wpa_supplicant * wpa_s,const u8 * dst,u8 version,const char * query)2556 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2557 u8 version, const char *query)
2558 {
2559 struct wpabuf *tlvs;
2560 u64 ret;
2561
2562 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2563 if (tlvs == NULL)
2564 return 0;
2565 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2566 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2567 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2568 wpabuf_put_u8(tlvs, version);
2569 wpabuf_put_str(tlvs, query);
2570 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2571 wpabuf_free(tlvs);
2572 return ret;
2573 }
2574
2575
2576 #ifdef CONFIG_WIFI_DISPLAY
2577
wpas_p2p_sd_request_wfd(struct wpa_supplicant * wpa_s,const u8 * dst,const struct wpabuf * tlvs)2578 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2579 const struct wpabuf *tlvs)
2580 {
2581 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2582 return 0;
2583 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2584 }
2585
2586
2587 #define MAX_WFD_SD_SUBELEMS 20
2588
wfd_add_sd_req_role(struct wpabuf * tlvs,u8 id,u8 role,const char * subelems)2589 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2590 const char *subelems)
2591 {
2592 u8 *len;
2593 const char *pos;
2594 int val;
2595 int count = 0;
2596
2597 len = wpabuf_put(tlvs, 2);
2598 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2599 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2600
2601 wpabuf_put_u8(tlvs, role);
2602
2603 pos = subelems;
2604 while (*pos) {
2605 val = atoi(pos);
2606 if (val >= 0 && val < 256) {
2607 wpabuf_put_u8(tlvs, val);
2608 count++;
2609 if (count == MAX_WFD_SD_SUBELEMS)
2610 break;
2611 }
2612 pos = os_strchr(pos + 1, ',');
2613 if (pos == NULL)
2614 break;
2615 pos++;
2616 }
2617
2618 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2619 }
2620
2621
wpas_p2p_sd_request_wifi_display(struct wpa_supplicant * wpa_s,const u8 * dst,const char * role)2622 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2623 const u8 *dst, const char *role)
2624 {
2625 struct wpabuf *tlvs;
2626 u64 ret;
2627 const char *subelems;
2628 u8 id = 1;
2629
2630 subelems = os_strchr(role, ' ');
2631 if (subelems == NULL)
2632 return 0;
2633 subelems++;
2634
2635 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2636 if (tlvs == NULL)
2637 return 0;
2638
2639 if (os_strstr(role, "[source]"))
2640 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2641 if (os_strstr(role, "[pri-sink]"))
2642 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2643 if (os_strstr(role, "[sec-sink]"))
2644 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2645 if (os_strstr(role, "[source+sink]"))
2646 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2647
2648 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2649 wpabuf_free(tlvs);
2650 return ret;
2651 }
2652
2653 #endif /* CONFIG_WIFI_DISPLAY */
2654
2655
wpas_p2p_sd_cancel_request(struct wpa_supplicant * wpa_s,u64 req)2656 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2657 {
2658 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2659 return -1;
2660 return p2p_sd_cancel_request(wpa_s->global->p2p,
2661 (void *) (uintptr_t) req);
2662 }
2663
2664
wpas_p2p_sd_response(struct wpa_supplicant * wpa_s,int freq,const u8 * dst,u8 dialog_token,const struct wpabuf * resp_tlvs)2665 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2666 const u8 *dst, u8 dialog_token,
2667 const struct wpabuf *resp_tlvs)
2668 {
2669 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2670 return;
2671 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2672 resp_tlvs);
2673 }
2674
2675
wpas_p2p_sd_service_update(struct wpa_supplicant * wpa_s)2676 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2677 {
2678 if (wpa_s->global->p2p)
2679 p2p_sd_service_update(wpa_s->global->p2p);
2680 }
2681
2682
wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour * bsrv)2683 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2684 {
2685 dl_list_del(&bsrv->list);
2686 wpabuf_free(bsrv->query);
2687 wpabuf_free(bsrv->resp);
2688 os_free(bsrv);
2689 }
2690
2691
wpas_p2p_srv_upnp_free(struct p2p_srv_upnp * usrv)2692 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2693 {
2694 dl_list_del(&usrv->list);
2695 os_free(usrv->service);
2696 os_free(usrv);
2697 }
2698
2699
wpas_p2p_service_flush(struct wpa_supplicant * wpa_s)2700 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2701 {
2702 struct p2p_srv_bonjour *bsrv, *bn;
2703 struct p2p_srv_upnp *usrv, *un;
2704
2705 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2706 struct p2p_srv_bonjour, list)
2707 wpas_p2p_srv_bonjour_free(bsrv);
2708
2709 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2710 struct p2p_srv_upnp, list)
2711 wpas_p2p_srv_upnp_free(usrv);
2712
2713 wpas_p2p_sd_service_update(wpa_s);
2714 }
2715
2716
wpas_p2p_service_add_bonjour(struct wpa_supplicant * wpa_s,struct wpabuf * query,struct wpabuf * resp)2717 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2718 struct wpabuf *query, struct wpabuf *resp)
2719 {
2720 struct p2p_srv_bonjour *bsrv;
2721
2722 bsrv = os_zalloc(sizeof(*bsrv));
2723 if (bsrv == NULL)
2724 return -1;
2725 bsrv->query = query;
2726 bsrv->resp = resp;
2727 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2728
2729 wpas_p2p_sd_service_update(wpa_s);
2730 return 0;
2731 }
2732
2733
wpas_p2p_service_del_bonjour(struct wpa_supplicant * wpa_s,const struct wpabuf * query)2734 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2735 const struct wpabuf *query)
2736 {
2737 struct p2p_srv_bonjour *bsrv;
2738
2739 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2740 if (bsrv == NULL)
2741 return -1;
2742 wpas_p2p_srv_bonjour_free(bsrv);
2743 wpas_p2p_sd_service_update(wpa_s);
2744 return 0;
2745 }
2746
2747
wpas_p2p_service_add_upnp(struct wpa_supplicant * wpa_s,u8 version,const char * service)2748 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2749 const char *service)
2750 {
2751 struct p2p_srv_upnp *usrv;
2752
2753 if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2754 return 0; /* Already listed */
2755 usrv = os_zalloc(sizeof(*usrv));
2756 if (usrv == NULL)
2757 return -1;
2758 usrv->version = version;
2759 usrv->service = os_strdup(service);
2760 if (usrv->service == NULL) {
2761 os_free(usrv);
2762 return -1;
2763 }
2764 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2765
2766 wpas_p2p_sd_service_update(wpa_s);
2767 return 0;
2768 }
2769
2770
wpas_p2p_service_del_upnp(struct wpa_supplicant * wpa_s,u8 version,const char * service)2771 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2772 const char *service)
2773 {
2774 struct p2p_srv_upnp *usrv;
2775
2776 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2777 if (usrv == NULL)
2778 return -1;
2779 wpas_p2p_srv_upnp_free(usrv);
2780 wpas_p2p_sd_service_update(wpa_s);
2781 return 0;
2782 }
2783
2784
wpas_prov_disc_local_display(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params,unsigned int generated_pin)2785 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2786 const u8 *peer, const char *params,
2787 unsigned int generated_pin)
2788 {
2789 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2790 " %08d%s", MAC2STR(peer), generated_pin, params);
2791 }
2792
2793
wpas_prov_disc_local_keypad(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params)2794 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2795 const u8 *peer, const char *params)
2796 {
2797 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2798 "%s", MAC2STR(peer), params);
2799 }
2800
2801
wpas_prov_disc_req(void * ctx,const u8 * peer,u16 config_methods,const u8 * dev_addr,const u8 * pri_dev_type,const char * dev_name,u16 supp_config_methods,u8 dev_capab,u8 group_capab,const u8 * group_id,size_t group_id_len)2802 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2803 const u8 *dev_addr, const u8 *pri_dev_type,
2804 const char *dev_name, u16 supp_config_methods,
2805 u8 dev_capab, u8 group_capab, const u8 *group_id,
2806 size_t group_id_len)
2807 {
2808 struct wpa_supplicant *wpa_s = ctx;
2809 char devtype[WPS_DEV_TYPE_BUFSIZE];
2810 char params[300];
2811 u8 empty_dev_type[8];
2812 unsigned int generated_pin = 0;
2813 struct wpa_supplicant *group = NULL;
2814
2815 if (group_id) {
2816 for (group = wpa_s->global->ifaces; group; group = group->next)
2817 {
2818 struct wpa_ssid *s = group->current_ssid;
2819 if (s != NULL &&
2820 s->mode == WPAS_MODE_P2P_GO &&
2821 group_id_len - ETH_ALEN == s->ssid_len &&
2822 os_memcmp(group_id + ETH_ALEN, s->ssid,
2823 s->ssid_len) == 0)
2824 break;
2825 }
2826 }
2827
2828 if (pri_dev_type == NULL) {
2829 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2830 pri_dev_type = empty_dev_type;
2831 }
2832 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2833 " pri_dev_type=%s name='%s' config_methods=0x%x "
2834 "dev_capab=0x%x group_capab=0x%x%s%s",
2835 MAC2STR(dev_addr),
2836 wps_dev_type_bin2str(pri_dev_type, devtype,
2837 sizeof(devtype)),
2838 dev_name, supp_config_methods, dev_capab, group_capab,
2839 group ? " group=" : "",
2840 group ? group->ifname : "");
2841 params[sizeof(params) - 1] = '\0';
2842
2843 if (config_methods & WPS_CONFIG_DISPLAY) {
2844 generated_pin = wps_generate_pin();
2845 wpas_prov_disc_local_display(wpa_s, peer, params,
2846 generated_pin);
2847 } else if (config_methods & WPS_CONFIG_KEYPAD)
2848 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2849 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2850 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2851 MACSTR "%s", MAC2STR(peer), params);
2852
2853 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2854 P2P_PROV_DISC_SUCCESS,
2855 config_methods, generated_pin);
2856 }
2857
2858
wpas_prov_disc_resp(void * ctx,const u8 * peer,u16 config_methods)2859 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2860 {
2861 struct wpa_supplicant *wpa_s = ctx;
2862 unsigned int generated_pin = 0;
2863 char params[20];
2864
2865 if (wpa_s->pending_pd_before_join &&
2866 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2867 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2868 wpa_s->pending_pd_before_join = 0;
2869 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2870 "join-existing-group operation");
2871 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2872 return;
2873 }
2874
2875 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2876 wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2877 os_snprintf(params, sizeof(params), " peer_go=%d",
2878 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2879 else
2880 params[0] = '\0';
2881
2882 if (config_methods & WPS_CONFIG_DISPLAY)
2883 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2884 else if (config_methods & WPS_CONFIG_KEYPAD) {
2885 generated_pin = wps_generate_pin();
2886 wpas_prov_disc_local_display(wpa_s, peer, params,
2887 generated_pin);
2888 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2889 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2890 MACSTR "%s", MAC2STR(peer), params);
2891
2892 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2893 P2P_PROV_DISC_SUCCESS,
2894 config_methods, generated_pin);
2895 }
2896
2897
wpas_prov_disc_fail(void * ctx,const u8 * peer,enum p2p_prov_disc_status status)2898 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2899 enum p2p_prov_disc_status status)
2900 {
2901 struct wpa_supplicant *wpa_s = ctx;
2902
2903 if (wpa_s->p2p_fallback_to_go_neg) {
2904 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2905 "failed - fall back to GO Negotiation");
2906 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2907 return;
2908 }
2909
2910 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2911 wpa_s->pending_pd_before_join = 0;
2912 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2913 "join-existing-group operation (no ACK for PD "
2914 "Req attempts)");
2915 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2916 return;
2917 }
2918
2919 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2920 " p2p_dev_addr=" MACSTR " status=%d",
2921 MAC2STR(peer), status);
2922
2923 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2924 status, 0, 0);
2925 }
2926
2927
freq_included(const struct p2p_channels * channels,unsigned int freq)2928 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2929 {
2930 if (channels == NULL)
2931 return 1; /* Assume no restrictions */
2932 return p2p_channels_includes_freq(channels, freq);
2933
2934 }
2935
2936
2937 /**
2938 * Pick the best frequency to use from all the currently used frequencies.
2939 */
wpas_p2p_pick_best_used_freq(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)2940 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2941 struct wpa_used_freq_data *freqs,
2942 unsigned int num)
2943 {
2944 unsigned int i, c;
2945
2946 /* find a candidate freq that is supported by P2P */
2947 for (c = 0; c < num; c++)
2948 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2949 break;
2950
2951 if (c == num)
2952 return 0;
2953
2954 /* once we have a candidate, try to find a 'better' one */
2955 for (i = c + 1; i < num; i++) {
2956 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2957 continue;
2958
2959 /*
2960 * 1. Infrastructure station interfaces have higher preference.
2961 * 2. P2P Clients have higher preference.
2962 * 3. All others.
2963 */
2964 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2965 c = i;
2966 break;
2967 }
2968
2969 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2970 c = i;
2971 }
2972 return freqs[c].freq;
2973 }
2974
2975
wpas_invitation_process(void * ctx,const u8 * sa,const u8 * bssid,const u8 * go_dev_addr,const u8 * ssid,size_t ssid_len,int * go,u8 * group_bssid,int * force_freq,int persistent_group,const struct p2p_channels * channels,int dev_pw_id)2976 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2977 const u8 *go_dev_addr, const u8 *ssid,
2978 size_t ssid_len, int *go, u8 *group_bssid,
2979 int *force_freq, int persistent_group,
2980 const struct p2p_channels *channels,
2981 int dev_pw_id)
2982 {
2983 struct wpa_supplicant *wpa_s = ctx;
2984 struct wpa_ssid *s;
2985 struct wpa_used_freq_data *freqs;
2986 struct wpa_supplicant *grp;
2987 int best_freq;
2988
2989 if (!persistent_group) {
2990 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2991 " to join an active group (SSID: %s)",
2992 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2993 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2994 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2995 == 0 ||
2996 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2997 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2998 "authorized invitation");
2999 goto accept_inv;
3000 }
3001
3002 #ifdef CONFIG_WPS_NFC
3003 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
3004 dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
3005 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
3006 wpa_s->parent->p2p_wps_method = WPS_NFC;
3007 wpa_s->parent->pending_join_wps_method = WPS_NFC;
3008 os_memcpy(wpa_s->parent->pending_join_dev_addr,
3009 go_dev_addr, ETH_ALEN);
3010 os_memcpy(wpa_s->parent->pending_join_iface_addr,
3011 bssid, ETH_ALEN);
3012 goto accept_inv;
3013 }
3014 #endif /* CONFIG_WPS_NFC */
3015
3016 /*
3017 * Do not accept the invitation automatically; notify user and
3018 * request approval.
3019 */
3020 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3021 }
3022
3023 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
3024 if (grp) {
3025 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
3026 "running persistent group");
3027 if (*go)
3028 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
3029 goto accept_inv;
3030 }
3031
3032 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3033 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
3034 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
3035 "invitation to re-invoke a persistent group");
3036 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
3037 } else if (!wpa_s->conf->persistent_reconnect)
3038 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3039
3040 for (s = wpa_s->conf->ssid; s; s = s->next) {
3041 if (s->disabled == 2 &&
3042 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
3043 s->ssid_len == ssid_len &&
3044 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3045 break;
3046 }
3047
3048 if (!s) {
3049 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3050 " requested reinvocation of an unknown group",
3051 MAC2STR(sa));
3052 return P2P_SC_FAIL_UNKNOWN_GROUP;
3053 }
3054
3055 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
3056 *go = 1;
3057 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3058 wpa_printf(MSG_DEBUG, "P2P: The only available "
3059 "interface is already in use - reject "
3060 "invitation");
3061 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3062 }
3063 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3064 } else if (s->mode == WPAS_MODE_P2P_GO) {
3065 *go = 1;
3066 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3067 {
3068 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3069 "interface address for the group");
3070 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3071 }
3072 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3073 ETH_ALEN);
3074 }
3075
3076 accept_inv:
3077 wpas_p2p_set_own_freq_preference(wpa_s, 0);
3078
3079 best_freq = 0;
3080 freqs = os_calloc(wpa_s->num_multichan_concurrent,
3081 sizeof(struct wpa_used_freq_data));
3082 if (freqs) {
3083 int num_channels = wpa_s->num_multichan_concurrent;
3084 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3085 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3086 os_free(freqs);
3087 }
3088
3089 /* Get one of the frequencies currently in use */
3090 if (best_freq > 0) {
3091 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3092 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3093
3094 if (wpa_s->num_multichan_concurrent < 2 ||
3095 wpas_p2p_num_unused_channels(wpa_s) < 1) {
3096 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3097 *force_freq = best_freq;
3098 }
3099 }
3100
3101 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3102 wpas_p2p_num_unused_channels(wpa_s) > 0) {
3103 if (*go == 0) {
3104 /* We are the client */
3105 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3106 "running a GO but we are capable of MCC, "
3107 "figure out the best channel to use");
3108 *force_freq = 0;
3109 } else if (!freq_included(channels, *force_freq)) {
3110 /* We are the GO, and *force_freq is not in the
3111 * intersection */
3112 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3113 "in intersection but we are capable of MCC, "
3114 "figure out the best channel to use",
3115 *force_freq);
3116 *force_freq = 0;
3117 }
3118 }
3119
3120 return P2P_SC_SUCCESS;
3121 }
3122
3123
wpas_invitation_received(void * ctx,const u8 * sa,const u8 * bssid,const u8 * ssid,size_t ssid_len,const u8 * go_dev_addr,u8 status,int op_freq)3124 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3125 const u8 *ssid, size_t ssid_len,
3126 const u8 *go_dev_addr, u8 status,
3127 int op_freq)
3128 {
3129 struct wpa_supplicant *wpa_s = ctx;
3130 struct wpa_ssid *s;
3131
3132 for (s = wpa_s->conf->ssid; s; s = s->next) {
3133 if (s->disabled == 2 &&
3134 s->ssid_len == ssid_len &&
3135 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3136 break;
3137 }
3138
3139 if (status == P2P_SC_SUCCESS) {
3140 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3141 " was accepted; op_freq=%d MHz, SSID=%s",
3142 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3143 if (s) {
3144 int go = s->mode == WPAS_MODE_P2P_GO;
3145 wpas_p2p_group_add_persistent(
3146 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3147 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3148 } else if (bssid) {
3149 wpa_s->user_initiated_pd = 0;
3150 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3151 wpa_s->p2p_wps_method, 0, op_freq,
3152 ssid, ssid_len);
3153 }
3154 return;
3155 }
3156
3157 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3158 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3159 " was rejected (status %u)", MAC2STR(sa), status);
3160 return;
3161 }
3162
3163 if (!s) {
3164 if (bssid) {
3165 wpa_msg_global(wpa_s, MSG_INFO,
3166 P2P_EVENT_INVITATION_RECEIVED
3167 "sa=" MACSTR " go_dev_addr=" MACSTR
3168 " bssid=" MACSTR " unknown-network",
3169 MAC2STR(sa), MAC2STR(go_dev_addr),
3170 MAC2STR(bssid));
3171 } else {
3172 wpa_msg_global(wpa_s, MSG_INFO,
3173 P2P_EVENT_INVITATION_RECEIVED
3174 "sa=" MACSTR " go_dev_addr=" MACSTR
3175 " unknown-network",
3176 MAC2STR(sa), MAC2STR(go_dev_addr));
3177 }
3178 return;
3179 }
3180
3181 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3182 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3183 "sa=" MACSTR " persistent=%d freq=%d",
3184 MAC2STR(sa), s->id, op_freq);
3185 } else {
3186 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3187 "sa=" MACSTR " persistent=%d",
3188 MAC2STR(sa), s->id);
3189 }
3190 }
3191
3192
wpas_remove_persistent_peer(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * peer,int inv)3193 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3194 struct wpa_ssid *ssid,
3195 const u8 *peer, int inv)
3196 {
3197 size_t i;
3198
3199 if (ssid == NULL)
3200 return;
3201
3202 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3203 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3204 ETH_ALEN) == 0)
3205 break;
3206 }
3207 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3208 if (ssid->mode != WPAS_MODE_P2P_GO &&
3209 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3210 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3211 "due to invitation result", ssid->id);
3212 wpas_notify_network_removed(wpa_s, ssid);
3213 wpa_config_remove_network(wpa_s->conf, ssid->id);
3214 return;
3215 }
3216 return; /* Peer not found in client list */
3217 }
3218
3219 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3220 "group %d client list%s",
3221 MAC2STR(peer), ssid->id,
3222 inv ? " due to invitation result" : "");
3223 os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3224 ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3225 (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3226 ssid->num_p2p_clients--;
3227 if (wpa_s->parent->conf->update_config &&
3228 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3229 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3230 }
3231
3232
wpas_remove_persistent_client(struct wpa_supplicant * wpa_s,const u8 * peer)3233 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3234 const u8 *peer)
3235 {
3236 struct wpa_ssid *ssid;
3237
3238 wpa_s = wpa_s->global->p2p_invite_group;
3239 if (wpa_s == NULL)
3240 return; /* No known invitation group */
3241 ssid = wpa_s->current_ssid;
3242 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3243 !ssid->p2p_persistent_group)
3244 return; /* Not operating as a GO in persistent group */
3245 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3246 ssid->ssid, ssid->ssid_len);
3247 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3248 }
3249
3250
wpas_invitation_result(void * ctx,int status,const u8 * bssid,const struct p2p_channels * channels,const u8 * peer,int neg_freq,int peer_oper_freq)3251 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3252 const struct p2p_channels *channels,
3253 const u8 *peer, int neg_freq,
3254 int peer_oper_freq)
3255 {
3256 struct wpa_supplicant *wpa_s = ctx;
3257 struct wpa_ssid *ssid;
3258 int freq;
3259
3260 if (bssid) {
3261 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3262 "status=%d " MACSTR,
3263 status, MAC2STR(bssid));
3264 } else {
3265 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3266 "status=%d ", status);
3267 }
3268 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3269
3270 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3271 status, MAC2STR(peer));
3272 if (wpa_s->pending_invite_ssid_id == -1) {
3273 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3274 wpas_remove_persistent_client(wpa_s, peer);
3275 return; /* Invitation to active group */
3276 }
3277
3278 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3279 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3280 "invitation exchange to indicate readiness for "
3281 "re-invocation");
3282 }
3283
3284 if (status != P2P_SC_SUCCESS) {
3285 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3286 ssid = wpa_config_get_network(
3287 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3288 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3289 }
3290 wpas_p2p_remove_pending_group_interface(wpa_s);
3291 return;
3292 }
3293
3294 ssid = wpa_config_get_network(wpa_s->conf,
3295 wpa_s->pending_invite_ssid_id);
3296 if (ssid == NULL) {
3297 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3298 "data matching with invitation");
3299 return;
3300 }
3301
3302 /*
3303 * The peer could have missed our ctrl::ack frame for Invitation
3304 * Response and continue retransmitting the frame. To reduce the
3305 * likelihood of the peer not getting successful TX status for the
3306 * Invitation Response frame, wait a short time here before starting
3307 * the persistent group so that we will remain on the current channel to
3308 * acknowledge any possible retransmission from the peer.
3309 */
3310 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3311 "starting persistent group");
3312 os_sleep(0, 50000);
3313
3314 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3315 freq_included(channels, neg_freq))
3316 freq = neg_freq;
3317 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3318 freq_included(channels, peer_oper_freq))
3319 freq = peer_oper_freq;
3320 else
3321 freq = 0;
3322
3323 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3324 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3325 wpas_p2p_group_add_persistent(wpa_s, ssid,
3326 ssid->mode == WPAS_MODE_P2P_GO,
3327 wpa_s->p2p_persistent_go_freq,
3328 freq,
3329 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3330 channels,
3331 ssid->mode == WPAS_MODE_P2P_GO ?
3332 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3333 0);
3334 }
3335
3336
wpas_p2p_disallowed_freq(struct wpa_global * global,unsigned int freq)3337 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3338 unsigned int freq)
3339 {
3340 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3341 return 1;
3342 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3343 }
3344
3345
wpas_p2p_add_chan(struct p2p_reg_class * reg,u8 chan)3346 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3347 {
3348 reg->channel[reg->channels] = chan;
3349 reg->channels++;
3350 }
3351
3352
wpas_p2p_default_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3353 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3354 struct p2p_channels *chan,
3355 struct p2p_channels *cli_chan)
3356 {
3357 int i, cla = 0;
3358
3359 os_memset(cli_chan, 0, sizeof(*cli_chan));
3360
3361 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3362 "band");
3363
3364 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3365 chan->reg_class[cla].reg_class = 81;
3366 chan->reg_class[cla].channels = 0;
3367 for (i = 0; i < 11; i++) {
3368 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3369 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3370 }
3371 if (chan->reg_class[cla].channels)
3372 cla++;
3373
3374 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3375 "band");
3376
3377 /* Operating class 115 - 5 GHz, channels 36-48 */
3378 chan->reg_class[cla].reg_class = 115;
3379 chan->reg_class[cla].channels = 0;
3380 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3381 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3382 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3383 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3384 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3385 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3386 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3387 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3388 if (chan->reg_class[cla].channels)
3389 cla++;
3390
3391 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3392 "band");
3393
3394 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3395 chan->reg_class[cla].reg_class = 124;
3396 chan->reg_class[cla].channels = 0;
3397 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3398 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3399 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3400 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3401 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3402 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3403 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3404 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3405 if (chan->reg_class[cla].channels)
3406 cla++;
3407
3408 chan->reg_classes = cla;
3409 return 0;
3410 }
3411
3412
get_mode(struct hostapd_hw_modes * modes,u16 num_modes,enum hostapd_hw_mode mode)3413 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3414 u16 num_modes,
3415 enum hostapd_hw_mode mode)
3416 {
3417 u16 i;
3418
3419 for (i = 0; i < num_modes; i++) {
3420 if (modes[i].mode == mode)
3421 return &modes[i];
3422 }
3423
3424 return NULL;
3425 }
3426
3427
3428 enum chan_allowed {
3429 NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3430 };
3431
has_channel(struct wpa_global * global,struct hostapd_hw_modes * mode,u8 chan,int * flags)3432 static int has_channel(struct wpa_global *global,
3433 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3434 {
3435 int i;
3436 unsigned int freq;
3437
3438 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3439 chan * 5;
3440 if (wpas_p2p_disallowed_freq(global, freq))
3441 return NOT_ALLOWED;
3442
3443 for (i = 0; i < mode->num_channels; i++) {
3444 if (mode->channels[i].chan == chan) {
3445 if (flags)
3446 *flags = mode->channels[i].flag;
3447 if (mode->channels[i].flag &
3448 (HOSTAPD_CHAN_DISABLED |
3449 HOSTAPD_CHAN_RADAR))
3450 return NOT_ALLOWED;
3451 if (mode->channels[i].flag &
3452 (HOSTAPD_CHAN_PASSIVE_SCAN |
3453 HOSTAPD_CHAN_NO_IBSS))
3454 return PASSIVE_ONLY;
3455 return ALLOWED;
3456 }
3457 }
3458
3459 return NOT_ALLOWED;
3460 }
3461
3462
3463 struct p2p_oper_class_map {
3464 enum hostapd_hw_mode mode;
3465 u8 op_class;
3466 u8 min_chan;
3467 u8 max_chan;
3468 u8 inc;
3469 enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3470 };
3471
3472 static struct p2p_oper_class_map op_class[] = {
3473 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3474 #if 0 /* Do not enable HT40 on 2 GHz for now */
3475 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3476 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3477 #endif
3478 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3479 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3480 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3481 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3482 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3483 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3484
3485 /*
3486 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3487 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3488 * 80 MHz, but currently use the following definition for simplicity
3489 * (these center frequencies are not actual channels, which makes
3490 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3491 * removing invalid channels.
3492 */
3493 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3494 { -1, 0, 0, 0, 0, BW20 }
3495 };
3496
3497
wpas_p2p_get_center_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3498 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3499 struct hostapd_hw_modes *mode,
3500 u8 channel)
3501 {
3502 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3503 unsigned int i;
3504
3505 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3506 return 0;
3507
3508 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3509 /*
3510 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3511 * so the center channel is 6 channels away from the start/end.
3512 */
3513 if (channel >= center_channels[i] - 6 &&
3514 channel <= center_channels[i] + 6)
3515 return center_channels[i];
3516
3517 return 0;
3518 }
3519
3520
wpas_p2p_verify_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3521 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3522 struct hostapd_hw_modes *mode,
3523 u8 channel, u8 bw)
3524 {
3525 u8 center_chan;
3526 int i, flags;
3527 enum chan_allowed res, ret = ALLOWED;
3528
3529 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3530 if (!center_chan)
3531 return NOT_ALLOWED;
3532 if (center_chan >= 58 && center_chan <= 138)
3533 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3534
3535 /* check all the channels are available */
3536 for (i = 0; i < 4; i++) {
3537 int adj_chan = center_chan - 6 + i * 4;
3538
3539 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3540 if (res == NOT_ALLOWED)
3541 return NOT_ALLOWED;
3542 if (res == PASSIVE_ONLY)
3543 ret = PASSIVE_ONLY;
3544
3545 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3546 return NOT_ALLOWED;
3547 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3548 return NOT_ALLOWED;
3549 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3550 return NOT_ALLOWED;
3551 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3552 return NOT_ALLOWED;
3553 }
3554
3555 return ret;
3556 }
3557
3558
wpas_p2p_verify_channel(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3559 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3560 struct hostapd_hw_modes *mode,
3561 u8 channel, u8 bw)
3562 {
3563 int flag = 0;
3564 enum chan_allowed res, res2;
3565
3566 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3567 if (bw == BW40MINUS) {
3568 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3569 return NOT_ALLOWED;
3570 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3571 } else if (bw == BW40PLUS) {
3572 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3573 return NOT_ALLOWED;
3574 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3575 } else if (bw == BW80) {
3576 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3577 }
3578
3579 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3580 return NOT_ALLOWED;
3581 if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3582 return PASSIVE_ONLY;
3583 return res;
3584 }
3585
3586
wpas_p2p_setup_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3587 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3588 struct p2p_channels *chan,
3589 struct p2p_channels *cli_chan)
3590 {
3591 struct hostapd_hw_modes *mode;
3592 int cla, op, cli_cla;
3593
3594 if (wpa_s->hw.modes == NULL) {
3595 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3596 "of all supported channels; assume dualband "
3597 "support");
3598 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3599 }
3600
3601 cla = cli_cla = 0;
3602
3603 for (op = 0; op_class[op].op_class; op++) {
3604 struct p2p_oper_class_map *o = &op_class[op];
3605 u8 ch;
3606 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3607
3608 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3609 if (mode == NULL)
3610 continue;
3611 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3612 enum chan_allowed res;
3613 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3614 if (res == ALLOWED) {
3615 if (reg == NULL) {
3616 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3617 o->op_class);
3618 reg = &chan->reg_class[cla];
3619 cla++;
3620 reg->reg_class = o->op_class;
3621 }
3622 reg->channel[reg->channels] = ch;
3623 reg->channels++;
3624 } else if (res == PASSIVE_ONLY &&
3625 wpa_s->conf->p2p_add_cli_chan) {
3626 if (cli_reg == NULL) {
3627 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3628 o->op_class);
3629 cli_reg = &cli_chan->reg_class[cli_cla];
3630 cli_cla++;
3631 cli_reg->reg_class = o->op_class;
3632 }
3633 cli_reg->channel[cli_reg->channels] = ch;
3634 cli_reg->channels++;
3635 }
3636 }
3637 if (reg) {
3638 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3639 reg->channel, reg->channels);
3640 }
3641 if (cli_reg) {
3642 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3643 cli_reg->channel, cli_reg->channels);
3644 }
3645 }
3646
3647 chan->reg_classes = cla;
3648 cli_chan->reg_classes = cli_cla;
3649
3650 return 0;
3651 }
3652
3653
wpas_p2p_get_ht40_mode(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3654 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3655 struct hostapd_hw_modes *mode, u8 channel)
3656 {
3657 int op;
3658 enum chan_allowed ret;
3659
3660 for (op = 0; op_class[op].op_class; op++) {
3661 struct p2p_oper_class_map *o = &op_class[op];
3662 u8 ch;
3663
3664 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3665 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3666 o->bw == BW20 || ch != channel)
3667 continue;
3668 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3669 if (ret == ALLOWED)
3670 return (o->bw == BW40MINUS) ? -1 : 1;
3671 }
3672 }
3673 return 0;
3674 }
3675
3676
wpas_p2p_get_vht80_center(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3677 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3678 struct hostapd_hw_modes *mode, u8 channel)
3679 {
3680 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3681 return 0;
3682
3683 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3684 }
3685
3686
wpas_get_noa(void * ctx,const u8 * interface_addr,u8 * buf,size_t buf_len)3687 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3688 size_t buf_len)
3689 {
3690 struct wpa_supplicant *wpa_s = ctx;
3691
3692 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3693 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3694 break;
3695 }
3696 if (wpa_s == NULL)
3697 return -1;
3698
3699 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3700 }
3701
3702
wpas_get_p2p_go_iface(struct wpa_supplicant * wpa_s,const u8 * ssid,size_t ssid_len)3703 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3704 const u8 *ssid, size_t ssid_len)
3705 {
3706 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3707 struct wpa_ssid *s = wpa_s->current_ssid;
3708 if (s == NULL)
3709 continue;
3710 if (s->mode != WPAS_MODE_P2P_GO &&
3711 s->mode != WPAS_MODE_AP &&
3712 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3713 continue;
3714 if (s->ssid_len != ssid_len ||
3715 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3716 continue;
3717 return wpa_s;
3718 }
3719
3720 return NULL;
3721
3722 }
3723
3724
wpas_get_p2p_client_iface(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)3725 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3726 const u8 *peer_dev_addr)
3727 {
3728 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3729 struct wpa_ssid *ssid = wpa_s->current_ssid;
3730 if (ssid == NULL)
3731 continue;
3732 if (ssid->mode != WPAS_MODE_INFRA)
3733 continue;
3734 if (wpa_s->wpa_state != WPA_COMPLETED &&
3735 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3736 continue;
3737 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3738 return wpa_s;
3739 }
3740
3741 return NULL;
3742 }
3743
3744
wpas_go_connected(void * ctx,const u8 * dev_addr)3745 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3746 {
3747 struct wpa_supplicant *wpa_s = ctx;
3748
3749 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3750 }
3751
3752
wpas_is_concurrent_session_active(void * ctx)3753 static int wpas_is_concurrent_session_active(void *ctx)
3754 {
3755 struct wpa_supplicant *wpa_s = ctx;
3756 struct wpa_supplicant *ifs;
3757
3758 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3759 if (ifs == wpa_s)
3760 continue;
3761 if (ifs->wpa_state > WPA_ASSOCIATED)
3762 return 1;
3763 }
3764 return 0;
3765 }
3766
3767
wpas_p2p_debug_print(void * ctx,int level,const char * msg)3768 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3769 {
3770 struct wpa_supplicant *wpa_s = ctx;
3771 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3772 }
3773
3774
wpas_p2p_add_p2pdev_interface(struct wpa_supplicant * wpa_s)3775 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3776 {
3777 struct wpa_interface iface;
3778 struct wpa_supplicant *p2pdev_wpa_s;
3779 char ifname[100];
3780 char force_name[100];
3781 int ret;
3782
3783 os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3784 wpa_s->ifname);
3785 force_name[0] = '\0';
3786 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3787 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3788 force_name, wpa_s->pending_interface_addr, NULL);
3789 if (ret < 0) {
3790 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3791 return ret;
3792 }
3793 os_strlcpy(wpa_s->pending_interface_name, ifname,
3794 sizeof(wpa_s->pending_interface_name));
3795
3796 os_memset(&iface, 0, sizeof(iface));
3797 iface.p2p_mgmt = 1;
3798 iface.ifname = wpa_s->pending_interface_name;
3799 iface.driver = wpa_s->driver->name;
3800 iface.driver_param = wpa_s->conf->driver_param;
3801
3802 /*
3803 * If a P2P Device configuration file was given, use it as the interface
3804 * configuration file (instead of using parent's configuration file.
3805 */
3806 if (wpa_s->conf_p2p_dev) {
3807 iface.confname = wpa_s->conf_p2p_dev;
3808 iface.ctrl_interface = NULL;
3809 } else {
3810 iface.confname = wpa_s->confname;
3811 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3812 }
3813 iface.conf_p2p_dev = NULL;
3814
3815 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3816 if (!p2pdev_wpa_s) {
3817 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3818 return -1;
3819 }
3820 p2pdev_wpa_s->parent = wpa_s;
3821
3822 wpa_s->pending_interface_name[0] = '\0';
3823 return 0;
3824 }
3825
3826
wpas_presence_resp(void * ctx,const u8 * src,u8 status,const u8 * noa,size_t noa_len)3827 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3828 const u8 *noa, size_t noa_len)
3829 {
3830 struct wpa_supplicant *wpa_s, *intf = ctx;
3831 char hex[100];
3832
3833 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3834 if (wpa_s->waiting_presence_resp)
3835 break;
3836 }
3837 if (!wpa_s) {
3838 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3839 return;
3840 }
3841 wpa_s->waiting_presence_resp = 0;
3842
3843 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3844 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3845 " status=%u noa=%s", MAC2STR(src), status, hex);
3846 }
3847
3848
_wpas_p2p_in_progress(void * ctx)3849 static int _wpas_p2p_in_progress(void *ctx)
3850 {
3851 struct wpa_supplicant *wpa_s = ctx;
3852 return wpas_p2p_in_progress(wpa_s);
3853 }
3854
3855
3856 /**
3857 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3858 * @global: Pointer to global data from wpa_supplicant_init()
3859 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3860 * Returns: 0 on success, -1 on failure
3861 */
wpas_p2p_init(struct wpa_global * global,struct wpa_supplicant * wpa_s)3862 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3863 {
3864 struct p2p_config p2p;
3865 unsigned int r;
3866 int i;
3867
3868 if (wpa_s->conf->p2p_disabled)
3869 return 0;
3870
3871 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3872 return 0;
3873
3874 if (global->p2p)
3875 return 0;
3876
3877 os_memset(&p2p, 0, sizeof(p2p));
3878 p2p.cb_ctx = wpa_s;
3879 p2p.debug_print = wpas_p2p_debug_print;
3880 p2p.p2p_scan = wpas_p2p_scan;
3881 p2p.send_action = wpas_send_action;
3882 p2p.send_action_done = wpas_send_action_done;
3883 p2p.go_neg_completed = wpas_go_neg_completed;
3884 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3885 p2p.dev_found = wpas_dev_found;
3886 p2p.dev_lost = wpas_dev_lost;
3887 p2p.find_stopped = wpas_find_stopped;
3888 p2p.start_listen = wpas_start_listen;
3889 p2p.stop_listen = wpas_stop_listen;
3890 p2p.send_probe_resp = wpas_send_probe_resp;
3891 p2p.sd_request = wpas_sd_request;
3892 p2p.sd_response = wpas_sd_response;
3893 p2p.prov_disc_req = wpas_prov_disc_req;
3894 p2p.prov_disc_resp = wpas_prov_disc_resp;
3895 p2p.prov_disc_fail = wpas_prov_disc_fail;
3896 p2p.invitation_process = wpas_invitation_process;
3897 p2p.invitation_received = wpas_invitation_received;
3898 p2p.invitation_result = wpas_invitation_result;
3899 p2p.get_noa = wpas_get_noa;
3900 p2p.go_connected = wpas_go_connected;
3901 p2p.presence_resp = wpas_presence_resp;
3902 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3903 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3904
3905 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3906 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3907 p2p.dev_name = wpa_s->conf->device_name;
3908 p2p.manufacturer = wpa_s->conf->manufacturer;
3909 p2p.model_name = wpa_s->conf->model_name;
3910 p2p.model_number = wpa_s->conf->model_number;
3911 p2p.serial_number = wpa_s->conf->serial_number;
3912 if (wpa_s->wps) {
3913 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3914 p2p.config_methods = wpa_s->wps->config_methods;
3915 }
3916
3917 if (wpa_s->conf->p2p_listen_reg_class &&
3918 wpa_s->conf->p2p_listen_channel) {
3919 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3920 p2p.channel = wpa_s->conf->p2p_listen_channel;
3921 p2p.channel_forced = 1;
3922 } else {
3923 p2p.reg_class = 81;
3924 /*
3925 * Pick one of the social channels randomly as the listen
3926 * channel.
3927 */
3928 os_get_random((u8 *) &r, sizeof(r));
3929 p2p.channel = 1 + (r % 3) * 5;
3930 p2p.channel_forced = 0;
3931 }
3932 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3933
3934 if (wpa_s->conf->p2p_oper_reg_class &&
3935 wpa_s->conf->p2p_oper_channel) {
3936 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3937 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3938 p2p.cfg_op_channel = 1;
3939 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3940 "%d:%d", p2p.op_reg_class, p2p.op_channel);
3941
3942 } else {
3943 p2p.op_reg_class = 81;
3944 /*
3945 * Use random operation channel from (1, 6, 11) if no other
3946 * preference is indicated.
3947 */
3948 os_get_random((u8 *) &r, sizeof(r));
3949 p2p.op_channel = 1 + (r % 3) * 5;
3950 p2p.cfg_op_channel = 0;
3951 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3952 "%d:%d", p2p.op_reg_class, p2p.op_channel);
3953 }
3954
3955 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3956 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3957 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3958 }
3959
3960 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3961 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3962 p2p.country[2] = 0x04;
3963 } else
3964 os_memcpy(p2p.country, "XX\x04", 3);
3965
3966 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3967 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3968 "channel list");
3969 return -1;
3970 }
3971
3972 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3973 WPS_DEV_TYPE_LEN);
3974
3975 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3976 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3977 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3978
3979 p2p.concurrent_operations = !!(wpa_s->drv_flags &
3980 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3981
3982 p2p.max_peers = 100;
3983
3984 if (wpa_s->conf->p2p_ssid_postfix) {
3985 p2p.ssid_postfix_len =
3986 os_strlen(wpa_s->conf->p2p_ssid_postfix);
3987 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3988 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3989 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3990 p2p.ssid_postfix_len);
3991 }
3992
3993 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3994
3995 p2p.max_listen = wpa_s->max_remain_on_chan;
3996
3997 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
3998 wpa_s->conf->p2p_passphrase_len <= 63)
3999 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4000 else
4001 p2p.passphrase_len = 8;
4002
4003 global->p2p = p2p_init(&p2p);
4004 if (global->p2p == NULL)
4005 return -1;
4006 global->p2p_init_wpa_s = wpa_s;
4007
4008 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4009 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4010 continue;
4011 p2p_add_wps_vendor_extension(
4012 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4013 }
4014
4015 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4016
4017 return 0;
4018 }
4019
4020
4021 /**
4022 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4023 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4024 *
4025 * This function deinitialize per-interface P2P data.
4026 */
wpas_p2p_deinit(struct wpa_supplicant * wpa_s)4027 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4028 {
4029 if (wpa_s->driver && wpa_s->drv_priv)
4030 wpa_drv_probe_req_report(wpa_s, 0);
4031
4032 if (wpa_s->go_params) {
4033 /* Clear any stored provisioning info */
4034 p2p_clear_provisioning_info(
4035 wpa_s->global->p2p,
4036 wpa_s->go_params->peer_device_addr);
4037 }
4038
4039 os_free(wpa_s->go_params);
4040 wpa_s->go_params = NULL;
4041 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4042 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4043 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4044 wpa_s->p2p_long_listen = 0;
4045 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4046 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4047 wpas_p2p_remove_pending_group_interface(wpa_s);
4048 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4049 wpas_p2p_listen_work_done(wpa_s);
4050 if (wpa_s->p2p_send_action_work) {
4051 os_free(wpa_s->p2p_send_action_work->ctx);
4052 radio_work_done(wpa_s->p2p_send_action_work);
4053 wpa_s->p2p_send_action_work = NULL;
4054 }
4055 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4056
4057 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4058 wpa_s->p2p_oob_dev_pw = NULL;
4059
4060 /* TODO: remove group interface from the driver if this wpa_s instance
4061 * is on top of a P2P group interface */
4062 }
4063
4064
4065 /**
4066 * wpas_p2p_deinit_global - Deinitialize global P2P module
4067 * @global: Pointer to global data from wpa_supplicant_init()
4068 *
4069 * This function deinitializes the global (per device) P2P module.
4070 */
wpas_p2p_deinit_global(struct wpa_global * global)4071 static void wpas_p2p_deinit_global(struct wpa_global *global)
4072 {
4073 struct wpa_supplicant *wpa_s, *tmp;
4074
4075 wpa_s = global->ifaces;
4076 if (wpa_s)
4077 wpas_p2p_service_flush(wpa_s);
4078
4079 if (global->p2p == NULL)
4080 return;
4081
4082 /* Remove remaining P2P group interfaces */
4083 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4084 wpa_s = wpa_s->next;
4085 while (wpa_s) {
4086 tmp = global->ifaces;
4087 while (tmp &&
4088 (tmp == wpa_s ||
4089 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4090 tmp = tmp->next;
4091 }
4092 if (tmp == NULL)
4093 break;
4094 /* Disconnect from the P2P group and deinit the interface */
4095 wpas_p2p_disconnect(tmp);
4096 }
4097
4098 /*
4099 * Deinit GO data on any possibly remaining interface (if main
4100 * interface is used as GO).
4101 */
4102 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4103 if (wpa_s->ap_iface)
4104 wpas_p2p_group_deinit(wpa_s);
4105 }
4106
4107 p2p_deinit(global->p2p);
4108 global->p2p = NULL;
4109 global->p2p_init_wpa_s = NULL;
4110 }
4111
4112
wpas_p2p_create_iface(struct wpa_supplicant * wpa_s)4113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4114 {
4115 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4116 wpa_s->conf->p2p_no_group_iface)
4117 return 0; /* separate interface disabled per configuration */
4118 if (wpa_s->drv_flags &
4119 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4120 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4121 return 1; /* P2P group requires a new interface in every case
4122 */
4123 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4124 return 0; /* driver does not support concurrent operations */
4125 if (wpa_s->global->ifaces->next)
4126 return 1; /* more that one interface already in use */
4127 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4128 return 1; /* this interface is already in use */
4129 return 0;
4130 }
4131
4132
wpas_p2p_start_go_neg(struct wpa_supplicant * wpa_s,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,struct wpa_ssid * ssid,unsigned int pref_freq)4133 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4134 const u8 *peer_addr,
4135 enum p2p_wps_method wps_method,
4136 int go_intent, const u8 *own_interface_addr,
4137 unsigned int force_freq, int persistent_group,
4138 struct wpa_ssid *ssid, unsigned int pref_freq)
4139 {
4140 if (persistent_group && wpa_s->conf->persistent_reconnect)
4141 persistent_group = 2;
4142
4143 /*
4144 * Increase GO config timeout if HT40 is used since it takes some time
4145 * to scan channels for coex purposes before the BSS can be started.
4146 */
4147 p2p_set_config_timeout(wpa_s->global->p2p,
4148 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4149
4150 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4151 go_intent, own_interface_addr, force_freq,
4152 persistent_group, ssid ? ssid->ssid : NULL,
4153 ssid ? ssid->ssid_len : 0,
4154 wpa_s->p2p_pd_before_go_neg, pref_freq,
4155 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4156 0);
4157 }
4158
4159
wpas_p2p_auth_go_neg(struct wpa_supplicant * wpa_s,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,struct wpa_ssid * ssid,unsigned int pref_freq)4160 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4161 const u8 *peer_addr,
4162 enum p2p_wps_method wps_method,
4163 int go_intent, const u8 *own_interface_addr,
4164 unsigned int force_freq, int persistent_group,
4165 struct wpa_ssid *ssid, unsigned int pref_freq)
4166 {
4167 if (persistent_group && wpa_s->conf->persistent_reconnect)
4168 persistent_group = 2;
4169
4170 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4171 go_intent, own_interface_addr, force_freq,
4172 persistent_group, ssid ? ssid->ssid : NULL,
4173 ssid ? ssid->ssid_len : 0, pref_freq,
4174 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4175 0);
4176 }
4177
4178
wpas_p2p_check_join_scan_limit(struct wpa_supplicant * wpa_s)4179 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4180 {
4181 wpa_s->p2p_join_scan_count++;
4182 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4183 wpa_s->p2p_join_scan_count);
4184 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4185 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4186 " for join operationg - stop join attempt",
4187 MAC2STR(wpa_s->pending_join_iface_addr));
4188 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4189 if (wpa_s->p2p_auto_pd) {
4190 wpa_s->p2p_auto_pd = 0;
4191 wpa_msg_global(wpa_s, MSG_INFO,
4192 P2P_EVENT_PROV_DISC_FAILURE
4193 " p2p_dev_addr=" MACSTR " status=N/A",
4194 MAC2STR(wpa_s->pending_join_dev_addr));
4195 return;
4196 }
4197 wpa_msg_global(wpa_s->parent, MSG_INFO,
4198 P2P_EVENT_GROUP_FORMATION_FAILURE);
4199 }
4200 }
4201
4202
wpas_check_freq_conflict(struct wpa_supplicant * wpa_s,int freq)4203 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4204 {
4205 int res;
4206 unsigned int num, i;
4207 struct wpa_used_freq_data *freqs;
4208
4209 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4210 /* Multiple channels are supported and not all are in use */
4211 return 0;
4212 }
4213
4214 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4215 sizeof(struct wpa_used_freq_data));
4216 if (!freqs)
4217 return 1;
4218
4219 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4220 wpa_s->num_multichan_concurrent);
4221
4222 for (i = 0; i < num; i++) {
4223 if (freqs[i].freq == freq) {
4224 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4225 freq);
4226 res = 0;
4227 goto exit_free;
4228 }
4229 }
4230
4231 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4232 res = 1;
4233
4234 exit_free:
4235 os_free(freqs);
4236 return res;
4237 }
4238
4239
wpas_p2p_peer_go(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)4240 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4241 const u8 *peer_dev_addr)
4242 {
4243 struct wpa_bss *bss;
4244 int updated;
4245
4246 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4247 if (bss == NULL)
4248 return -1;
4249 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4250 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4251 "last scan");
4252 return 0;
4253 }
4254
4255 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4256 &bss->last_update);
4257 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4258 "%ld.%06ld (%supdated in last scan)",
4259 bss->last_update.sec, bss->last_update.usec,
4260 updated ? "": "not ");
4261
4262 return updated;
4263 }
4264
4265
wpas_p2p_scan_res_join(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)4266 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4267 struct wpa_scan_results *scan_res)
4268 {
4269 struct wpa_bss *bss = NULL;
4270 int freq;
4271 u8 iface_addr[ETH_ALEN];
4272
4273 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4274
4275 if (wpa_s->global->p2p_disabled)
4276 return;
4277
4278 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4279 scan_res ? (int) scan_res->num : -1,
4280 wpa_s->p2p_auto_join ? "auto_" : "");
4281
4282 if (scan_res)
4283 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4284
4285 if (wpa_s->p2p_auto_pd) {
4286 int join = wpas_p2p_peer_go(wpa_s,
4287 wpa_s->pending_join_dev_addr);
4288 if (join == 0 &&
4289 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4290 wpa_s->auto_pd_scan_retry++;
4291 bss = wpa_bss_get_bssid_latest(
4292 wpa_s, wpa_s->pending_join_dev_addr);
4293 if (bss) {
4294 freq = bss->freq;
4295 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4296 "the peer " MACSTR " at %d MHz",
4297 wpa_s->auto_pd_scan_retry,
4298 MAC2STR(wpa_s->
4299 pending_join_dev_addr),
4300 freq);
4301 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4302 return;
4303 }
4304 }
4305
4306 if (join < 0)
4307 join = 0;
4308
4309 wpa_s->p2p_auto_pd = 0;
4310 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4311 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4312 MAC2STR(wpa_s->pending_join_dev_addr), join);
4313 if (p2p_prov_disc_req(wpa_s->global->p2p,
4314 wpa_s->pending_join_dev_addr,
4315 wpa_s->pending_pd_config_methods, join,
4316 0, wpa_s->user_initiated_pd) < 0) {
4317 wpa_s->p2p_auto_pd = 0;
4318 wpa_msg_global(wpa_s, MSG_INFO,
4319 P2P_EVENT_PROV_DISC_FAILURE
4320 " p2p_dev_addr=" MACSTR " status=N/A",
4321 MAC2STR(wpa_s->pending_join_dev_addr));
4322 }
4323 return;
4324 }
4325
4326 if (wpa_s->p2p_auto_join) {
4327 int join = wpas_p2p_peer_go(wpa_s,
4328 wpa_s->pending_join_dev_addr);
4329 if (join < 0) {
4330 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4331 "running a GO -> use GO Negotiation");
4332 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4333 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4334 wpa_s->p2p_persistent_group, 0, 0, 0,
4335 wpa_s->p2p_go_intent,
4336 wpa_s->p2p_connect_freq,
4337 wpa_s->p2p_persistent_id,
4338 wpa_s->p2p_pd_before_go_neg,
4339 wpa_s->p2p_go_ht40,
4340 wpa_s->p2p_go_vht);
4341 return;
4342 }
4343
4344 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4345 "try to join the group", join ? "" :
4346 " in older scan");
4347 if (!join)
4348 wpa_s->p2p_fallback_to_go_neg = 1;
4349 }
4350
4351 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4352 wpa_s->pending_join_iface_addr);
4353 if (freq < 0 &&
4354 p2p_get_interface_addr(wpa_s->global->p2p,
4355 wpa_s->pending_join_dev_addr,
4356 iface_addr) == 0 &&
4357 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4358 {
4359 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4360 "address for join from " MACSTR " to " MACSTR
4361 " based on newly discovered P2P peer entry",
4362 MAC2STR(wpa_s->pending_join_iface_addr),
4363 MAC2STR(iface_addr));
4364 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4365 ETH_ALEN);
4366
4367 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4368 wpa_s->pending_join_iface_addr);
4369 }
4370 if (freq >= 0) {
4371 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4372 "from P2P peer table: %d MHz", freq);
4373 }
4374 if (wpa_s->p2p_join_ssid_len) {
4375 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4376 MACSTR " and SSID %s",
4377 MAC2STR(wpa_s->pending_join_iface_addr),
4378 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4379 wpa_s->p2p_join_ssid_len));
4380 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4381 wpa_s->p2p_join_ssid,
4382 wpa_s->p2p_join_ssid_len);
4383 }
4384 if (!bss) {
4385 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4386 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4387 bss = wpa_bss_get_bssid_latest(wpa_s,
4388 wpa_s->pending_join_iface_addr);
4389 }
4390 if (bss) {
4391 freq = bss->freq;
4392 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4393 "from BSS table: %d MHz (SSID %s)", freq,
4394 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4395 }
4396 if (freq > 0) {
4397 u16 method;
4398
4399 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4400 wpa_msg_global(wpa_s->parent, MSG_INFO,
4401 P2P_EVENT_GROUP_FORMATION_FAILURE
4402 "reason=FREQ_CONFLICT");
4403 return;
4404 }
4405
4406 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4407 "prior to joining an existing group (GO " MACSTR
4408 " freq=%u MHz)",
4409 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4410 wpa_s->pending_pd_before_join = 1;
4411
4412 switch (wpa_s->pending_join_wps_method) {
4413 case WPS_PIN_DISPLAY:
4414 method = WPS_CONFIG_KEYPAD;
4415 break;
4416 case WPS_PIN_KEYPAD:
4417 method = WPS_CONFIG_DISPLAY;
4418 break;
4419 case WPS_PBC:
4420 method = WPS_CONFIG_PUSHBUTTON;
4421 break;
4422 default:
4423 method = 0;
4424 break;
4425 }
4426
4427 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4428 wpa_s->pending_join_dev_addr) ==
4429 method)) {
4430 /*
4431 * We have already performed provision discovery for
4432 * joining the group. Proceed directly to join
4433 * operation without duplicated provision discovery. */
4434 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4435 "with " MACSTR " already done - proceed to "
4436 "join",
4437 MAC2STR(wpa_s->pending_join_dev_addr));
4438 wpa_s->pending_pd_before_join = 0;
4439 goto start;
4440 }
4441
4442 if (p2p_prov_disc_req(wpa_s->global->p2p,
4443 wpa_s->pending_join_dev_addr, method, 1,
4444 freq, wpa_s->user_initiated_pd) < 0) {
4445 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4446 "Discovery Request before joining an "
4447 "existing group");
4448 wpa_s->pending_pd_before_join = 0;
4449 goto start;
4450 }
4451 return;
4452 }
4453
4454 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4455 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4456 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4457 wpas_p2p_check_join_scan_limit(wpa_s);
4458 return;
4459
4460 start:
4461 /* Start join operation immediately */
4462 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4463 }
4464
4465
wpas_p2p_join_scan_req(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)4466 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4467 const u8 *ssid, size_t ssid_len)
4468 {
4469 int ret;
4470 struct wpa_driver_scan_params params;
4471 struct wpabuf *wps_ie, *ies;
4472 size_t ielen;
4473 int freqs[2] = { 0, 0 };
4474
4475 os_memset(¶ms, 0, sizeof(params));
4476
4477 /* P2P Wildcard SSID */
4478 params.num_ssids = 1;
4479 if (ssid && ssid_len) {
4480 params.ssids[0].ssid = ssid;
4481 params.ssids[0].ssid_len = ssid_len;
4482 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4483 wpa_s->p2p_join_ssid_len = ssid_len;
4484 } else {
4485 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4486 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4487 wpa_s->p2p_join_ssid_len = 0;
4488 }
4489
4490 wpa_s->wps->dev.p2p = 1;
4491 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4492 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4493 NULL);
4494 if (wps_ie == NULL) {
4495 wpas_p2p_scan_res_join(wpa_s, NULL);
4496 return;
4497 }
4498
4499 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4500 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4501 if (ies == NULL) {
4502 wpabuf_free(wps_ie);
4503 wpas_p2p_scan_res_join(wpa_s, NULL);
4504 return;
4505 }
4506 wpabuf_put_buf(ies, wps_ie);
4507 wpabuf_free(wps_ie);
4508
4509 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4510
4511 params.p2p_probe = 1;
4512 params.extra_ies = wpabuf_head(ies);
4513 params.extra_ies_len = wpabuf_len(ies);
4514
4515 if (!freq) {
4516 int oper_freq;
4517 /*
4518 * If freq is not provided, check the operating freq of the GO
4519 * and use a single channel scan on if possible.
4520 */
4521 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4522 wpa_s->pending_join_iface_addr);
4523 if (oper_freq > 0)
4524 freq = oper_freq;
4525 }
4526 if (freq > 0) {
4527 freqs[0] = freq;
4528 params.freqs = freqs;
4529 }
4530
4531 /*
4532 * Run a scan to update BSS table and start Provision Discovery once
4533 * the new scan results become available.
4534 */
4535 ret = wpa_drv_scan(wpa_s, ¶ms);
4536 if (!ret) {
4537 os_get_reltime(&wpa_s->scan_trigger_time);
4538 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4539 wpa_s->own_scan_requested = 1;
4540 }
4541
4542 wpabuf_free(ies);
4543
4544 if (ret) {
4545 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4546 "try again later");
4547 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4548 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4549 wpas_p2p_check_join_scan_limit(wpa_s);
4550 }
4551 }
4552
4553
wpas_p2p_join_scan(void * eloop_ctx,void * timeout_ctx)4554 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4555 {
4556 struct wpa_supplicant *wpa_s = eloop_ctx;
4557 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4558 }
4559
4560
wpas_p2p_join(struct wpa_supplicant * wpa_s,const u8 * iface_addr,const u8 * dev_addr,enum p2p_wps_method wps_method,int auto_join,int op_freq,const u8 * ssid,size_t ssid_len)4561 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4562 const u8 *dev_addr, enum p2p_wps_method wps_method,
4563 int auto_join, int op_freq,
4564 const u8 *ssid, size_t ssid_len)
4565 {
4566 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4567 MACSTR " dev " MACSTR " op_freq=%d)%s",
4568 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4569 auto_join ? " (auto_join)" : "");
4570 if (ssid && ssid_len) {
4571 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4572 wpa_ssid_txt(ssid, ssid_len));
4573 }
4574
4575 wpa_s->p2p_auto_pd = 0;
4576 wpa_s->p2p_auto_join = !!auto_join;
4577 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4578 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4579 wpa_s->pending_join_wps_method = wps_method;
4580
4581 /* Make sure we are not running find during connection establishment */
4582 wpas_p2p_stop_find(wpa_s);
4583
4584 wpa_s->p2p_join_scan_count = 0;
4585 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4586 return 0;
4587 }
4588
4589
wpas_p2p_join_start(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)4590 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4591 const u8 *ssid, size_t ssid_len)
4592 {
4593 struct wpa_supplicant *group;
4594 struct p2p_go_neg_results res;
4595 struct wpa_bss *bss;
4596
4597 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4598 if (group == NULL)
4599 return -1;
4600 if (group != wpa_s) {
4601 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4602 sizeof(group->p2p_pin));
4603 group->p2p_wps_method = wpa_s->p2p_wps_method;
4604 } else {
4605 /*
4606 * Need to mark the current interface for p2p_group_formation
4607 * when a separate group interface is not used. This is needed
4608 * to allow p2p_cancel stop a pending p2p_connect-join.
4609 * wpas_p2p_init_group_interface() addresses this for the case
4610 * where a separate group interface is used.
4611 */
4612 wpa_s->global->p2p_group_formation = wpa_s;
4613 }
4614
4615 group->p2p_in_provisioning = 1;
4616 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4617
4618 os_memset(&res, 0, sizeof(res));
4619 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4620 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4621 ETH_ALEN);
4622 res.wps_method = wpa_s->pending_join_wps_method;
4623 if (freq && ssid && ssid_len) {
4624 res.freq = freq;
4625 res.ssid_len = ssid_len;
4626 os_memcpy(res.ssid, ssid, ssid_len);
4627 } else {
4628 bss = wpa_bss_get_bssid_latest(wpa_s,
4629 wpa_s->pending_join_iface_addr);
4630 if (bss) {
4631 res.freq = bss->freq;
4632 res.ssid_len = bss->ssid_len;
4633 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4634 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4635 bss->freq,
4636 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4637 }
4638 }
4639
4640 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4641 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4642 "starting client");
4643 wpa_drv_cancel_remain_on_channel(wpa_s);
4644 wpa_s->off_channel_freq = 0;
4645 wpa_s->roc_waiting_drv_freq = 0;
4646 }
4647 wpas_start_wps_enrollee(group, &res);
4648
4649 /*
4650 * Allow a longer timeout for join-a-running-group than normal 15
4651 * second group formation timeout since the GO may not have authorized
4652 * our connection yet.
4653 */
4654 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4655 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4656 wpa_s, NULL);
4657
4658 return 0;
4659 }
4660
4661
wpas_p2p_setup_freqs(struct wpa_supplicant * wpa_s,int freq,int * force_freq,int * pref_freq,int go)4662 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4663 int *force_freq, int *pref_freq, int go)
4664 {
4665 struct wpa_used_freq_data *freqs;
4666 int res, best_freq, num_unused;
4667 unsigned int freq_in_use = 0, num, i;
4668
4669 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4670 sizeof(struct wpa_used_freq_data));
4671 if (!freqs)
4672 return -1;
4673
4674 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4675 wpa_s->num_multichan_concurrent);
4676
4677 /*
4678 * It is possible that the total number of used frequencies is bigger
4679 * than the number of frequencies used for P2P, so get the system wide
4680 * number of unused frequencies.
4681 */
4682 num_unused = wpas_p2p_num_unused_channels(wpa_s);
4683
4684 wpa_printf(MSG_DEBUG,
4685 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4686 freq, wpa_s->num_multichan_concurrent, num, num_unused);
4687
4688 if (freq > 0) {
4689 int ret;
4690 if (go)
4691 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4692 else
4693 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4694 if (!ret) {
4695 wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4696 "(%u MHz) is not supported for P2P uses",
4697 freq);
4698 res = -3;
4699 goto exit_free;
4700 }
4701
4702 for (i = 0; i < num; i++) {
4703 if (freqs[i].freq == freq)
4704 freq_in_use = 1;
4705 }
4706
4707 if (num_unused <= 0 && !freq_in_use) {
4708 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4709 freq);
4710 res = -2;
4711 goto exit_free;
4712 }
4713 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4714 "requested channel (%u MHz)", freq);
4715 *force_freq = freq;
4716 goto exit_ok;
4717 }
4718
4719 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4720
4721 /* We have a candidate frequency to use */
4722 if (best_freq > 0) {
4723 if (*pref_freq == 0 && num_unused > 0) {
4724 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4725 best_freq);
4726 *pref_freq = best_freq;
4727 } else {
4728 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4729 best_freq);
4730 *force_freq = best_freq;
4731 }
4732 } else if (num_unused > 0) {
4733 wpa_printf(MSG_DEBUG,
4734 "P2P: Current operating channels are not available for P2P. Try to use another channel");
4735 *force_freq = 0;
4736 } else {
4737 wpa_printf(MSG_DEBUG,
4738 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4739 res = -2;
4740 goto exit_free;
4741 }
4742
4743 exit_ok:
4744 res = 0;
4745 exit_free:
4746 os_free(freqs);
4747 return res;
4748 }
4749
4750
4751 /**
4752 * wpas_p2p_connect - Request P2P Group Formation to be started
4753 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4754 * @peer_addr: Address of the peer P2P Device
4755 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4756 * @persistent_group: Whether to create a persistent group
4757 * @auto_join: Whether to select join vs. GO Negotiation automatically
4758 * @join: Whether to join an existing group (as a client) instead of starting
4759 * Group Owner negotiation; @peer_addr is BSSID in that case
4760 * @auth: Whether to only authorize the connection instead of doing that and
4761 * initiating Group Owner negotiation
4762 * @go_intent: GO Intent or -1 to use default
4763 * @freq: Frequency for the group or 0 for auto-selection
4764 * @persistent_id: Persistent group credentials to use for forcing GO
4765 * parameters or -1 to generate new values (SSID/passphrase)
4766 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4767 * interoperability workaround when initiating group formation
4768 * @ht40: Start GO with 40 MHz channel width
4769 * @vht: Start GO with VHT support
4770 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4771 * failure, -2 on failure due to channel not currently available,
4772 * -3 if forced channel is not supported
4773 */
wpas_p2p_connect(struct wpa_supplicant * wpa_s,const u8 * peer_addr,const char * pin,enum p2p_wps_method wps_method,int persistent_group,int auto_join,int join,int auth,int go_intent,int freq,int persistent_id,int pd,int ht40,int vht)4774 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4775 const char *pin, enum p2p_wps_method wps_method,
4776 int persistent_group, int auto_join, int join, int auth,
4777 int go_intent, int freq, int persistent_id, int pd,
4778 int ht40, int vht)
4779 {
4780 int force_freq = 0, pref_freq = 0;
4781 int ret = 0, res;
4782 enum wpa_driver_if_type iftype;
4783 const u8 *if_addr;
4784 struct wpa_ssid *ssid = NULL;
4785
4786 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4787 return -1;
4788
4789 if (persistent_id >= 0) {
4790 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4791 if (ssid == NULL || ssid->disabled != 2 ||
4792 ssid->mode != WPAS_MODE_P2P_GO)
4793 return -1;
4794 }
4795
4796 os_free(wpa_s->global->add_psk);
4797 wpa_s->global->add_psk = NULL;
4798
4799 wpa_s->global->p2p_fail_on_wps_complete = 0;
4800
4801 if (go_intent < 0)
4802 go_intent = wpa_s->conf->p2p_go_intent;
4803
4804 if (!auth)
4805 wpa_s->p2p_long_listen = 0;
4806
4807 wpa_s->p2p_wps_method = wps_method;
4808 wpa_s->p2p_persistent_group = !!persistent_group;
4809 wpa_s->p2p_persistent_id = persistent_id;
4810 wpa_s->p2p_go_intent = go_intent;
4811 wpa_s->p2p_connect_freq = freq;
4812 wpa_s->p2p_fallback_to_go_neg = 0;
4813 wpa_s->p2p_pd_before_go_neg = !!pd;
4814 wpa_s->p2p_go_ht40 = !!ht40;
4815 wpa_s->p2p_go_vht = !!vht;
4816
4817 if (pin)
4818 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4819 else if (wps_method == WPS_PIN_DISPLAY) {
4820 ret = wps_generate_pin();
4821 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4822 ret);
4823 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4824 wpa_s->p2p_pin);
4825 } else
4826 wpa_s->p2p_pin[0] = '\0';
4827
4828 if (join || auto_join) {
4829 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4830 if (auth) {
4831 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4832 "connect a running group from " MACSTR,
4833 MAC2STR(peer_addr));
4834 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4835 return ret;
4836 }
4837 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4838 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4839 iface_addr) < 0) {
4840 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4841 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4842 dev_addr);
4843 }
4844 if (auto_join) {
4845 os_get_reltime(&wpa_s->p2p_auto_started);
4846 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4847 "%ld.%06ld",
4848 wpa_s->p2p_auto_started.sec,
4849 wpa_s->p2p_auto_started.usec);
4850 }
4851 wpa_s->user_initiated_pd = 1;
4852 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4853 auto_join, freq, NULL, 0) < 0)
4854 return -1;
4855 return ret;
4856 }
4857
4858 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4859 go_intent == 15);
4860 if (res)
4861 return res;
4862 wpas_p2p_set_own_freq_preference(wpa_s,
4863 force_freq ? force_freq : pref_freq);
4864
4865 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4866
4867 if (wpa_s->create_p2p_iface) {
4868 /* Prepare to add a new interface for the group */
4869 iftype = WPA_IF_P2P_GROUP;
4870 if (go_intent == 15)
4871 iftype = WPA_IF_P2P_GO;
4872 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4873 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4874 "interface for the group");
4875 return -1;
4876 }
4877
4878 if_addr = wpa_s->pending_interface_addr;
4879 } else
4880 if_addr = wpa_s->own_addr;
4881
4882 if (auth) {
4883 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4884 go_intent, if_addr,
4885 force_freq, persistent_group, ssid,
4886 pref_freq) < 0)
4887 return -1;
4888 return ret;
4889 }
4890
4891 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4892 go_intent, if_addr, force_freq,
4893 persistent_group, ssid, pref_freq) < 0) {
4894 if (wpa_s->create_p2p_iface)
4895 wpas_p2p_remove_pending_group_interface(wpa_s);
4896 return -1;
4897 }
4898 return ret;
4899 }
4900
4901
4902 /**
4903 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4904 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4905 * @freq: Frequency of the channel in MHz
4906 * @duration: Duration of the stay on the channel in milliseconds
4907 *
4908 * This callback is called when the driver indicates that it has started the
4909 * requested remain-on-channel duration.
4910 */
wpas_p2p_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq,unsigned int duration)4911 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4912 unsigned int freq, unsigned int duration)
4913 {
4914 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4915 return;
4916 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4917 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4918 wpa_s->pending_listen_duration);
4919 wpa_s->pending_listen_freq = 0;
4920 } else {
4921 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4922 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4923 freq, duration);
4924 }
4925 }
4926
4927
wpas_p2p_listen_start(struct wpa_supplicant * wpa_s,unsigned int timeout)4928 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
4929 {
4930 /* Limit maximum Listen state time based on driver limitation. */
4931 if (timeout > wpa_s->max_remain_on_chan)
4932 timeout = wpa_s->max_remain_on_chan;
4933
4934 return p2p_listen(wpa_s->global->p2p, timeout);
4935 }
4936
4937
4938 /**
4939 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4940 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4941 * @freq: Frequency of the channel in MHz
4942 *
4943 * This callback is called when the driver indicates that a remain-on-channel
4944 * operation has been completed, i.e., the duration on the requested channel
4945 * has timed out.
4946 */
wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq)4947 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4948 unsigned int freq)
4949 {
4950 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4951 "(p2p_long_listen=%d ms pending_action_tx=%p)",
4952 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4953 wpas_p2p_listen_work_done(wpa_s);
4954 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4955 return;
4956 if (wpa_s->p2p_long_listen > 0)
4957 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4958 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4959 return; /* P2P module started a new operation */
4960 if (offchannel_pending_action_tx(wpa_s))
4961 return;
4962 if (wpa_s->p2p_long_listen > 0) {
4963 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4964 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4965 } else {
4966 /*
4967 * When listen duration is over, stop listen & update p2p_state
4968 * to IDLE.
4969 */
4970 p2p_stop_listen(wpa_s->global->p2p);
4971 }
4972 }
4973
4974
4975 /**
4976 * wpas_p2p_group_remove - Remove a P2P group
4977 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4978 * @ifname: Network interface name of the group interface or "*" to remove all
4979 * groups
4980 * Returns: 0 on success, -1 on failure
4981 *
4982 * This function is used to remove a P2P group. This can be used to disconnect
4983 * from a group in which the local end is a P2P Client or to end a P2P Group in
4984 * case the local end is the Group Owner. If a virtual network interface was
4985 * created for this group, that interface will be removed. Otherwise, only the
4986 * configured P2P group network will be removed from the interface.
4987 */
wpas_p2p_group_remove(struct wpa_supplicant * wpa_s,const char * ifname)4988 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4989 {
4990 struct wpa_global *global = wpa_s->global;
4991
4992 if (os_strcmp(ifname, "*") == 0) {
4993 struct wpa_supplicant *prev;
4994 wpa_s = global->ifaces;
4995 while (wpa_s) {
4996 prev = wpa_s;
4997 wpa_s = wpa_s->next;
4998 if (prev->p2p_group_interface !=
4999 NOT_P2P_GROUP_INTERFACE ||
5000 (prev->current_ssid &&
5001 prev->current_ssid->p2p_group))
5002 wpas_p2p_disconnect(prev);
5003 }
5004 return 0;
5005 }
5006
5007 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5008 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5009 break;
5010 }
5011
5012 return wpas_p2p_disconnect(wpa_s);
5013 }
5014
5015
wpas_p2p_select_go_freq(struct wpa_supplicant * wpa_s,int freq)5016 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5017 {
5018 unsigned int r;
5019
5020 if (freq == 2) {
5021 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5022 "band");
5023 if (wpa_s->best_24_freq > 0 &&
5024 p2p_supported_freq_go(wpa_s->global->p2p,
5025 wpa_s->best_24_freq)) {
5026 freq = wpa_s->best_24_freq;
5027 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5028 "channel: %d MHz", freq);
5029 } else {
5030 os_get_random((u8 *) &r, sizeof(r));
5031 freq = 2412 + (r % 3) * 25;
5032 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5033 "channel: %d MHz", freq);
5034 }
5035 }
5036
5037 if (freq == 5) {
5038 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5039 "band");
5040 if (wpa_s->best_5_freq > 0 &&
5041 p2p_supported_freq_go(wpa_s->global->p2p,
5042 wpa_s->best_5_freq)) {
5043 freq = wpa_s->best_5_freq;
5044 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5045 "channel: %d MHz", freq);
5046 } else {
5047 os_get_random((u8 *) &r, sizeof(r));
5048 freq = 5180 + (r % 4) * 20;
5049 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5050 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5051 "5 GHz channel for P2P group");
5052 return -1;
5053 }
5054 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5055 "channel: %d MHz", freq);
5056 }
5057 }
5058
5059 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5060 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5061 "(%u MHz) is not supported for P2P uses",
5062 freq);
5063 return -1;
5064 }
5065
5066 return freq;
5067 }
5068
5069
wpas_p2p_select_freq_no_pref(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,const struct p2p_channels * channels)5070 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5071 struct p2p_go_neg_results *params,
5072 const struct p2p_channels *channels)
5073 {
5074 unsigned int i, r;
5075
5076 /* first try some random selection of the social channels */
5077 os_get_random((u8 *) &r, sizeof(r));
5078
5079 for (i = 0; i < 3; i++) {
5080 params->freq = 2412 + ((r + i) % 3) * 25;
5081 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5082 freq_included(channels, params->freq))
5083 goto out;
5084 }
5085
5086 /* try all channels in reg. class 81 */
5087 for (i = 0; i < 11; i++) {
5088 params->freq = 2412 + i * 5;
5089 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5090 freq_included(channels, params->freq))
5091 goto out;
5092 }
5093
5094 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel allowed");
5095 return -1;
5096 out:
5097 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5098 params->freq);
5099 return 0;
5100 }
5101
5102
wpas_p2p_init_go_params(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,int freq,int ht40,int vht,const struct p2p_channels * channels)5103 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5104 struct p2p_go_neg_results *params,
5105 int freq, int ht40, int vht,
5106 const struct p2p_channels *channels)
5107 {
5108 struct wpa_used_freq_data *freqs;
5109 unsigned int pref_freq, cand_freq;
5110 unsigned int num, i;
5111
5112 os_memset(params, 0, sizeof(*params));
5113 params->role_go = 1;
5114 params->ht40 = ht40;
5115 params->vht = vht;
5116 if (freq) {
5117 if (!freq_included(channels, freq)) {
5118 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5119 "accepted", freq);
5120 return -1;
5121 }
5122 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5123 "frequency %d MHz", freq);
5124 params->freq = freq;
5125 } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5126 wpa_s->conf->p2p_oper_channel >= 1 &&
5127 wpa_s->conf->p2p_oper_channel <= 11 &&
5128 freq_included(channels,
5129 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5130 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5131 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5132 "frequency %d MHz", params->freq);
5133 } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5134 wpa_s->conf->p2p_oper_reg_class == 116 ||
5135 wpa_s->conf->p2p_oper_reg_class == 117 ||
5136 wpa_s->conf->p2p_oper_reg_class == 124 ||
5137 wpa_s->conf->p2p_oper_reg_class == 126 ||
5138 wpa_s->conf->p2p_oper_reg_class == 127) &&
5139 freq_included(channels,
5140 5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5141 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5142 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5143 "frequency %d MHz", params->freq);
5144 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5145 wpa_s->best_overall_freq > 0 &&
5146 p2p_supported_freq_go(wpa_s->global->p2p,
5147 wpa_s->best_overall_freq) &&
5148 freq_included(channels, wpa_s->best_overall_freq)) {
5149 params->freq = wpa_s->best_overall_freq;
5150 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5151 "channel %d MHz", params->freq);
5152 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5153 wpa_s->best_24_freq > 0 &&
5154 p2p_supported_freq_go(wpa_s->global->p2p,
5155 wpa_s->best_24_freq) &&
5156 freq_included(channels, wpa_s->best_24_freq)) {
5157 params->freq = wpa_s->best_24_freq;
5158 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5159 "channel %d MHz", params->freq);
5160 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5161 wpa_s->best_5_freq > 0 &&
5162 p2p_supported_freq_go(wpa_s->global->p2p,
5163 wpa_s->best_5_freq) &&
5164 freq_included(channels, wpa_s->best_5_freq)) {
5165 params->freq = wpa_s->best_5_freq;
5166 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5167 "channel %d MHz", params->freq);
5168 } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5169 channels))) {
5170 params->freq = pref_freq;
5171 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5172 "channels", params->freq);
5173 } else {
5174 /* no preference, select some channel */
5175 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5176 return -1;
5177 }
5178
5179 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5180 sizeof(struct wpa_used_freq_data));
5181 if (!freqs)
5182 return -1;
5183
5184 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5185 wpa_s->num_multichan_concurrent);
5186
5187 cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5188
5189 /* First try the best used frequency if possible */
5190 if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5191 params->freq = cand_freq;
5192 } else if (!freq) {
5193 /* Try any of the used frequencies */
5194 for (i = 0; i < num; i++) {
5195 if (freq_included(channels, freqs[i].freq)) {
5196 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5197 freqs[i].freq);
5198 params->freq = freqs[i].freq;
5199 break;
5200 }
5201 }
5202
5203 if (i == num) {
5204 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5205 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5206 os_free(freqs);
5207 return -1;
5208 } else {
5209 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5210 }
5211 }
5212 } else {
5213 for (i = 0; i < num; i++) {
5214 if (freqs[i].freq == freq)
5215 break;
5216 }
5217
5218 if (i == num) {
5219 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5220 if (freq)
5221 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5222 os_free(freqs);
5223 return -1;
5224 } else {
5225 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5226 }
5227 }
5228 }
5229
5230 os_free(freqs);
5231 return 0;
5232 }
5233
5234
5235 static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant * wpa_s,int addr_allocated,int go)5236 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5237 int go)
5238 {
5239 struct wpa_supplicant *group_wpa_s;
5240
5241 if (!wpas_p2p_create_iface(wpa_s)) {
5242 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5243 "operations");
5244 wpa_s->p2p_first_connection_timeout = 0;
5245 return wpa_s;
5246 }
5247
5248 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5249 WPA_IF_P2P_CLIENT) < 0) {
5250 wpa_msg_global(wpa_s, MSG_ERROR,
5251 "P2P: Failed to add group interface");
5252 return NULL;
5253 }
5254 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5255 if (group_wpa_s == NULL) {
5256 wpa_msg_global(wpa_s, MSG_ERROR,
5257 "P2P: Failed to initialize group interface");
5258 wpas_p2p_remove_pending_group_interface(wpa_s);
5259 return NULL;
5260 }
5261
5262 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5263 group_wpa_s->ifname);
5264 group_wpa_s->p2p_first_connection_timeout = 0;
5265 return group_wpa_s;
5266 }
5267
5268
5269 /**
5270 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5271 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5272 * @persistent_group: Whether to create a persistent group
5273 * @freq: Frequency for the group or 0 to indicate no hardcoding
5274 * @ht40: Start GO with 40 MHz channel width
5275 * @vht: Start GO with VHT support
5276 * Returns: 0 on success, -1 on failure
5277 *
5278 * This function creates a new P2P group with the local end as the Group Owner,
5279 * i.e., without using Group Owner Negotiation.
5280 */
wpas_p2p_group_add(struct wpa_supplicant * wpa_s,int persistent_group,int freq,int ht40,int vht)5281 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5282 int freq, int ht40, int vht)
5283 {
5284 struct p2p_go_neg_results params;
5285
5286 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5287 return -1;
5288
5289 os_free(wpa_s->global->add_psk);
5290 wpa_s->global->add_psk = NULL;
5291
5292 /* Make sure we are not running find during connection establishment */
5293 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5294 wpas_p2p_stop_find_oper(wpa_s);
5295
5296 freq = wpas_p2p_select_go_freq(wpa_s, freq);
5297 if (freq < 0)
5298 return -1;
5299
5300 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, NULL))
5301 return -1;
5302 if (params.freq &&
5303 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5304 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5305 "(%u MHz) is not supported for P2P uses",
5306 params.freq);
5307 return -1;
5308 }
5309 p2p_go_params(wpa_s->global->p2p, ¶ms);
5310 params.persistent_group = persistent_group;
5311
5312 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5313 if (wpa_s == NULL)
5314 return -1;
5315 wpas_start_wps_go(wpa_s, ¶ms, 0);
5316
5317 return 0;
5318 }
5319
5320
wpas_start_p2p_client(struct wpa_supplicant * wpa_s,struct wpa_ssid * params,int addr_allocated,int freq)5321 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5322 struct wpa_ssid *params, int addr_allocated,
5323 int freq)
5324 {
5325 struct wpa_ssid *ssid;
5326
5327 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5328 if (wpa_s == NULL)
5329 return -1;
5330 wpa_s->p2p_last_4way_hs_fail = NULL;
5331
5332 wpa_supplicant_ap_deinit(wpa_s);
5333
5334 ssid = wpa_config_add_network(wpa_s->conf);
5335 if (ssid == NULL)
5336 return -1;
5337 wpa_config_set_network_defaults(ssid);
5338 ssid->temporary = 1;
5339 ssid->proto = WPA_PROTO_RSN;
5340 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5341 ssid->group_cipher = WPA_CIPHER_CCMP;
5342 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5343 ssid->ssid = os_malloc(params->ssid_len);
5344 if (ssid->ssid == NULL) {
5345 wpa_config_remove_network(wpa_s->conf, ssid->id);
5346 return -1;
5347 }
5348 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5349 ssid->ssid_len = params->ssid_len;
5350 ssid->p2p_group = 1;
5351 ssid->export_keys = 1;
5352 if (params->psk_set) {
5353 os_memcpy(ssid->psk, params->psk, 32);
5354 ssid->psk_set = 1;
5355 }
5356 if (params->passphrase)
5357 ssid->passphrase = os_strdup(params->passphrase);
5358
5359 wpa_s->show_group_started = 1;
5360 wpa_s->p2p_in_invitation = 1;
5361 wpa_s->p2p_invite_go_freq = freq;
5362
5363 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5364 NULL);
5365 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5366 wpas_p2p_group_formation_timeout,
5367 wpa_s->parent, NULL);
5368 wpa_supplicant_select_network(wpa_s, ssid);
5369
5370 return 0;
5371 }
5372
5373
wpas_p2p_group_add_persistent(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,int addr_allocated,int force_freq,int neg_freq,int ht40,int vht,const struct p2p_channels * channels,int connection_timeout)5374 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5375 struct wpa_ssid *ssid, int addr_allocated,
5376 int force_freq, int neg_freq, int ht40,
5377 int vht, const struct p2p_channels *channels,
5378 int connection_timeout)
5379 {
5380 struct p2p_go_neg_results params;
5381 int go = 0, freq;
5382
5383 if (ssid->disabled != 2 || ssid->ssid == NULL)
5384 return -1;
5385
5386 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5387 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5388 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5389 "already running");
5390 return 0;
5391 }
5392
5393 os_free(wpa_s->global->add_psk);
5394 wpa_s->global->add_psk = NULL;
5395
5396 /* Make sure we are not running find during connection establishment */
5397 wpas_p2p_stop_find_oper(wpa_s);
5398
5399 wpa_s->p2p_fallback_to_go_neg = 0;
5400
5401 if (force_freq > 0) {
5402 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5403 if (freq < 0)
5404 return -1;
5405 } else {
5406 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5407 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5408 freq = 0;
5409 }
5410
5411 if (ssid->mode == WPAS_MODE_INFRA)
5412 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5413
5414 if (ssid->mode != WPAS_MODE_P2P_GO)
5415 return -1;
5416
5417 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, channels))
5418 return -1;
5419
5420 params.role_go = 1;
5421 params.psk_set = ssid->psk_set;
5422 if (params.psk_set)
5423 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5424 if (ssid->passphrase) {
5425 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5426 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5427 "persistent group");
5428 return -1;
5429 }
5430 os_strlcpy(params.passphrase, ssid->passphrase,
5431 sizeof(params.passphrase));
5432 }
5433 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5434 params.ssid_len = ssid->ssid_len;
5435 params.persistent_group = 1;
5436
5437 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5438 if (wpa_s == NULL)
5439 return -1;
5440
5441 wpa_s->p2p_first_connection_timeout = connection_timeout;
5442 wpas_start_wps_go(wpa_s, ¶ms, 0);
5443
5444 return 0;
5445 }
5446
5447
wpas_p2p_ie_update(void * ctx,struct wpabuf * beacon_ies,struct wpabuf * proberesp_ies)5448 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5449 struct wpabuf *proberesp_ies)
5450 {
5451 struct wpa_supplicant *wpa_s = ctx;
5452 if (wpa_s->ap_iface) {
5453 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5454 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5455 wpabuf_free(beacon_ies);
5456 wpabuf_free(proberesp_ies);
5457 return;
5458 }
5459 if (beacon_ies) {
5460 wpabuf_free(hapd->p2p_beacon_ie);
5461 hapd->p2p_beacon_ie = beacon_ies;
5462 }
5463 wpabuf_free(hapd->p2p_probe_resp_ie);
5464 hapd->p2p_probe_resp_ie = proberesp_ies;
5465 } else {
5466 wpabuf_free(beacon_ies);
5467 wpabuf_free(proberesp_ies);
5468 }
5469 wpa_supplicant_ap_update_beacon(wpa_s);
5470 }
5471
5472
wpas_p2p_idle_update(void * ctx,int idle)5473 static void wpas_p2p_idle_update(void *ctx, int idle)
5474 {
5475 struct wpa_supplicant *wpa_s = ctx;
5476 if (!wpa_s->ap_iface)
5477 return;
5478 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5479 if (idle) {
5480 if (wpa_s->global->p2p_fail_on_wps_complete &&
5481 wpa_s->p2p_in_provisioning) {
5482 wpas_p2p_grpform_fail_after_wps(wpa_s);
5483 return;
5484 }
5485 wpas_p2p_set_group_idle_timeout(wpa_s);
5486 } else
5487 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5488 }
5489
5490
wpas_p2p_group_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)5491 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5492 struct wpa_ssid *ssid)
5493 {
5494 struct p2p_group *group;
5495 struct p2p_group_config *cfg;
5496
5497 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5498 return NULL;
5499
5500 cfg = os_zalloc(sizeof(*cfg));
5501 if (cfg == NULL)
5502 return NULL;
5503
5504 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5505 cfg->persistent_group = 2;
5506 else if (ssid->p2p_persistent_group)
5507 cfg->persistent_group = 1;
5508 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5509 if (wpa_s->max_stations &&
5510 wpa_s->max_stations < wpa_s->conf->max_num_sta)
5511 cfg->max_clients = wpa_s->max_stations;
5512 else
5513 cfg->max_clients = wpa_s->conf->max_num_sta;
5514 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5515 cfg->ssid_len = ssid->ssid_len;
5516 cfg->freq = ssid->frequency;
5517 cfg->cb_ctx = wpa_s;
5518 cfg->ie_update = wpas_p2p_ie_update;
5519 cfg->idle_update = wpas_p2p_idle_update;
5520
5521 group = p2p_group_init(wpa_s->global->p2p, cfg);
5522 if (group == NULL)
5523 os_free(cfg);
5524 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5525 p2p_group_notif_formation_done(group);
5526 wpa_s->p2p_group = group;
5527 return group;
5528 }
5529
5530
wpas_p2p_wps_success(struct wpa_supplicant * wpa_s,const u8 * peer_addr,int registrar)5531 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5532 int registrar)
5533 {
5534 struct wpa_ssid *ssid = wpa_s->current_ssid;
5535
5536 if (!wpa_s->p2p_in_provisioning) {
5537 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5538 "provisioning not in progress");
5539 return;
5540 }
5541
5542 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5543 u8 go_dev_addr[ETH_ALEN];
5544 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5545 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5546 ssid->ssid_len);
5547 /* Clear any stored provisioning info */
5548 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5549 }
5550
5551 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5552 NULL);
5553 wpa_s->p2p_go_group_formation_completed = 1;
5554 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5555 /*
5556 * Use a separate timeout for initial data connection to
5557 * complete to allow the group to be removed automatically if
5558 * something goes wrong in this step before the P2P group idle
5559 * timeout mechanism is taken into use.
5560 */
5561 wpa_dbg(wpa_s, MSG_DEBUG,
5562 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5563 P2P_MAX_INITIAL_CONN_WAIT);
5564 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5565 wpas_p2p_group_formation_timeout,
5566 wpa_s->parent, NULL);
5567 } else if (ssid) {
5568 /*
5569 * Use a separate timeout for initial data connection to
5570 * complete to allow the group to be removed automatically if
5571 * the client does not complete data connection successfully.
5572 */
5573 wpa_dbg(wpa_s, MSG_DEBUG,
5574 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5575 P2P_MAX_INITIAL_CONN_WAIT_GO);
5576 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5577 wpas_p2p_group_formation_timeout,
5578 wpa_s->parent, NULL);
5579 /*
5580 * Complete group formation on first successful data connection
5581 */
5582 wpa_s->p2p_go_group_formation_completed = 0;
5583 }
5584 if (wpa_s->global->p2p)
5585 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5586 wpas_group_formation_completed(wpa_s, 1);
5587 }
5588
5589
wpas_p2p_wps_failed(struct wpa_supplicant * wpa_s,struct wps_event_fail * fail)5590 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5591 struct wps_event_fail *fail)
5592 {
5593 if (!wpa_s->p2p_in_provisioning) {
5594 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5595 "provisioning not in progress");
5596 return;
5597 }
5598
5599 if (wpa_s->go_params) {
5600 p2p_clear_provisioning_info(
5601 wpa_s->global->p2p,
5602 wpa_s->go_params->peer_device_addr);
5603 }
5604
5605 wpas_notify_p2p_wps_failed(wpa_s, fail);
5606
5607 if (wpa_s == wpa_s->global->p2p_group_formation) {
5608 /*
5609 * Allow some time for the failed WPS negotiation exchange to
5610 * complete, but remove the group since group formation cannot
5611 * succeed after provisioning failure.
5612 */
5613 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5614 wpa_s->global->p2p_fail_on_wps_complete = 1;
5615 eloop_deplete_timeout(0, 50000,
5616 wpas_p2p_group_formation_timeout,
5617 wpa_s->parent, NULL);
5618 }
5619 }
5620
5621
wpas_p2p_wps_eapol_cb(struct wpa_supplicant * wpa_s)5622 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5623 {
5624 if (!wpa_s->global->p2p_fail_on_wps_complete ||
5625 !wpa_s->p2p_in_provisioning)
5626 return 0;
5627
5628 wpas_p2p_grpform_fail_after_wps(wpa_s);
5629
5630 return 1;
5631 }
5632
5633
wpas_p2p_prov_disc(struct wpa_supplicant * wpa_s,const u8 * peer_addr,const char * config_method,enum wpas_p2p_prov_disc_use use)5634 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5635 const char *config_method,
5636 enum wpas_p2p_prov_disc_use use)
5637 {
5638 u16 config_methods;
5639
5640 wpa_s->p2p_fallback_to_go_neg = 0;
5641 wpa_s->pending_pd_use = NORMAL_PD;
5642 if (os_strncmp(config_method, "display", 7) == 0)
5643 config_methods = WPS_CONFIG_DISPLAY;
5644 else if (os_strncmp(config_method, "keypad", 6) == 0)
5645 config_methods = WPS_CONFIG_KEYPAD;
5646 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5647 os_strncmp(config_method, "pushbutton", 10) == 0)
5648 config_methods = WPS_CONFIG_PUSHBUTTON;
5649 else {
5650 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5651 return -1;
5652 }
5653
5654 if (use == WPAS_P2P_PD_AUTO) {
5655 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5656 wpa_s->pending_pd_config_methods = config_methods;
5657 wpa_s->p2p_auto_pd = 1;
5658 wpa_s->p2p_auto_join = 0;
5659 wpa_s->pending_pd_before_join = 0;
5660 wpa_s->auto_pd_scan_retry = 0;
5661 wpas_p2p_stop_find(wpa_s);
5662 wpa_s->p2p_join_scan_count = 0;
5663 os_get_reltime(&wpa_s->p2p_auto_started);
5664 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5665 wpa_s->p2p_auto_started.sec,
5666 wpa_s->p2p_auto_started.usec);
5667 wpas_p2p_join_scan(wpa_s, NULL);
5668 return 0;
5669 }
5670
5671 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5672 return -1;
5673
5674 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5675 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5676 0, 1);
5677 }
5678
5679
wpas_p2p_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)5680 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5681 char *end)
5682 {
5683 return p2p_scan_result_text(ies, ies_len, buf, end);
5684 }
5685
5686
wpas_p2p_clear_pending_action_tx(struct wpa_supplicant * wpa_s)5687 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5688 {
5689 if (!offchannel_pending_action_tx(wpa_s))
5690 return;
5691
5692 wpas_p2p_action_tx_clear(wpa_s);
5693
5694 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5695 "operation request");
5696 offchannel_clear_pending_action_tx(wpa_s);
5697 }
5698
5699
wpas_p2p_find(struct wpa_supplicant * wpa_s,unsigned int timeout,enum p2p_discovery_type type,unsigned int num_req_dev_types,const u8 * req_dev_types,const u8 * dev_id,unsigned int search_delay)5700 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5701 enum p2p_discovery_type type,
5702 unsigned int num_req_dev_types, const u8 *req_dev_types,
5703 const u8 *dev_id, unsigned int search_delay)
5704 {
5705 wpas_p2p_clear_pending_action_tx(wpa_s);
5706 wpa_s->p2p_long_listen = 0;
5707
5708 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5709 wpa_s->p2p_in_provisioning)
5710 return -1;
5711
5712 wpa_supplicant_cancel_sched_scan(wpa_s);
5713
5714 return p2p_find(wpa_s->global->p2p, timeout, type,
5715 num_req_dev_types, req_dev_types, dev_id,
5716 search_delay);
5717 }
5718
5719
wpas_p2p_stop_find_oper(struct wpa_supplicant * wpa_s)5720 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5721 {
5722 wpas_p2p_clear_pending_action_tx(wpa_s);
5723 wpa_s->p2p_long_listen = 0;
5724 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5725 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5726
5727 if (wpa_s->global->p2p)
5728 p2p_stop_find(wpa_s->global->p2p);
5729
5730 return 0;
5731 }
5732
5733
wpas_p2p_stop_find(struct wpa_supplicant * wpa_s)5734 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5735 {
5736 if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5737 return;
5738 wpas_p2p_remove_pending_group_interface(wpa_s);
5739 }
5740
5741
wpas_p2p_long_listen_timeout(void * eloop_ctx,void * timeout_ctx)5742 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5743 {
5744 struct wpa_supplicant *wpa_s = eloop_ctx;
5745 wpa_s->p2p_long_listen = 0;
5746 }
5747
5748
wpas_p2p_listen(struct wpa_supplicant * wpa_s,unsigned int timeout)5749 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5750 {
5751 int res;
5752
5753 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5754 return -1;
5755
5756 wpa_supplicant_cancel_sched_scan(wpa_s);
5757 wpas_p2p_clear_pending_action_tx(wpa_s);
5758
5759 if (timeout == 0) {
5760 /*
5761 * This is a request for unlimited Listen state. However, at
5762 * least for now, this is mapped to a Listen state for one
5763 * hour.
5764 */
5765 timeout = 3600;
5766 }
5767 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5768 wpa_s->p2p_long_listen = 0;
5769
5770 /*
5771 * Stop previous find/listen operation to avoid trying to request a new
5772 * remain-on-channel operation while the driver is still running the
5773 * previous one.
5774 */
5775 if (wpa_s->global->p2p)
5776 p2p_stop_find(wpa_s->global->p2p);
5777
5778 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5779 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5780 wpa_s->p2p_long_listen = timeout * 1000;
5781 eloop_register_timeout(timeout, 0,
5782 wpas_p2p_long_listen_timeout,
5783 wpa_s, NULL);
5784 }
5785
5786 return res;
5787 }
5788
5789
wpas_p2p_assoc_req_ie(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,u8 * buf,size_t len,int p2p_group)5790 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5791 u8 *buf, size_t len, int p2p_group)
5792 {
5793 struct wpabuf *p2p_ie;
5794 int ret;
5795
5796 if (wpa_s->global->p2p_disabled)
5797 return -1;
5798 if (wpa_s->global->p2p == NULL)
5799 return -1;
5800 if (bss == NULL)
5801 return -1;
5802
5803 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5804 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5805 p2p_group, p2p_ie);
5806 wpabuf_free(p2p_ie);
5807
5808 return ret;
5809 }
5810
5811
wpas_p2p_probe_req_rx(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * dst,const u8 * bssid,const u8 * ie,size_t ie_len,int ssi_signal)5812 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5813 const u8 *dst, const u8 *bssid,
5814 const u8 *ie, size_t ie_len, int ssi_signal)
5815 {
5816 if (wpa_s->global->p2p_disabled)
5817 return 0;
5818 if (wpa_s->global->p2p == NULL)
5819 return 0;
5820
5821 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5822 ie, ie_len)) {
5823 case P2P_PREQ_NOT_P2P:
5824 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5825 ssi_signal);
5826 /* fall through */
5827 case P2P_PREQ_MALFORMED:
5828 case P2P_PREQ_NOT_LISTEN:
5829 case P2P_PREQ_NOT_PROCESSED:
5830 default: /* make gcc happy */
5831 return 0;
5832 case P2P_PREQ_PROCESSED:
5833 return 1;
5834 }
5835 }
5836
5837
wpas_p2p_rx_action(struct wpa_supplicant * wpa_s,const u8 * da,const u8 * sa,const u8 * bssid,u8 category,const u8 * data,size_t len,int freq)5838 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5839 const u8 *sa, const u8 *bssid,
5840 u8 category, const u8 *data, size_t len, int freq)
5841 {
5842 if (wpa_s->global->p2p_disabled)
5843 return;
5844 if (wpa_s->global->p2p == NULL)
5845 return;
5846
5847 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5848 freq);
5849 }
5850
5851
wpas_p2p_scan_ie(struct wpa_supplicant * wpa_s,struct wpabuf * ies)5852 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5853 {
5854 if (wpa_s->global->p2p_disabled)
5855 return;
5856 if (wpa_s->global->p2p == NULL)
5857 return;
5858
5859 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5860 }
5861
5862
wpas_p2p_group_deinit(struct wpa_supplicant * wpa_s)5863 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5864 {
5865 p2p_group_deinit(wpa_s->p2p_group);
5866 wpa_s->p2p_group = NULL;
5867
5868 wpa_s->ap_configured_cb = NULL;
5869 wpa_s->ap_configured_cb_ctx = NULL;
5870 wpa_s->ap_configured_cb_data = NULL;
5871 wpa_s->connect_without_scan = NULL;
5872 }
5873
5874
wpas_p2p_reject(struct wpa_supplicant * wpa_s,const u8 * addr)5875 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5876 {
5877 wpa_s->p2p_long_listen = 0;
5878
5879 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5880 return -1;
5881
5882 return p2p_reject(wpa_s->global->p2p, addr);
5883 }
5884
5885
5886 /* Invite to reinvoke a persistent group */
wpas_p2p_invite(struct wpa_supplicant * wpa_s,const u8 * peer_addr,struct wpa_ssid * ssid,const u8 * go_dev_addr,int freq,int ht40,int vht,int pref_freq)5887 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5888 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5889 int ht40, int vht, int pref_freq)
5890 {
5891 enum p2p_invite_role role;
5892 u8 *bssid = NULL;
5893 int force_freq = 0;
5894 int res;
5895 int no_pref_freq_given = pref_freq == 0;
5896
5897 wpa_s->global->p2p_invite_group = NULL;
5898 if (peer_addr)
5899 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5900 else
5901 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5902
5903 wpa_s->p2p_persistent_go_freq = freq;
5904 wpa_s->p2p_go_ht40 = !!ht40;
5905 if (ssid->mode == WPAS_MODE_P2P_GO) {
5906 role = P2P_INVITE_ROLE_GO;
5907 if (peer_addr == NULL) {
5908 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5909 "address in invitation command");
5910 return -1;
5911 }
5912 if (wpas_p2p_create_iface(wpa_s)) {
5913 if (wpas_p2p_add_group_interface(wpa_s,
5914 WPA_IF_P2P_GO) < 0) {
5915 wpa_printf(MSG_ERROR, "P2P: Failed to "
5916 "allocate a new interface for the "
5917 "group");
5918 return -1;
5919 }
5920 bssid = wpa_s->pending_interface_addr;
5921 } else
5922 bssid = wpa_s->own_addr;
5923 } else {
5924 role = P2P_INVITE_ROLE_CLIENT;
5925 peer_addr = ssid->bssid;
5926 }
5927 wpa_s->pending_invite_ssid_id = ssid->id;
5928
5929 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5930 role == P2P_INVITE_ROLE_GO);
5931 if (res)
5932 return res;
5933
5934 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5935 return -1;
5936
5937 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5938 no_pref_freq_given && pref_freq > 0 &&
5939 wpa_s->num_multichan_concurrent > 1 &&
5940 wpas_p2p_num_unused_channels(wpa_s) > 0) {
5941 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5942 pref_freq);
5943 pref_freq = 0;
5944 }
5945
5946 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5947 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5948 1, pref_freq, -1);
5949 }
5950
5951
5952 /* Invite to join an active group */
wpas_p2p_invite_group(struct wpa_supplicant * wpa_s,const char * ifname,const u8 * peer_addr,const u8 * go_dev_addr)5953 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5954 const u8 *peer_addr, const u8 *go_dev_addr)
5955 {
5956 struct wpa_global *global = wpa_s->global;
5957 enum p2p_invite_role role;
5958 u8 *bssid = NULL;
5959 struct wpa_ssid *ssid;
5960 int persistent;
5961 int freq = 0, force_freq = 0, pref_freq = 0;
5962 int res;
5963
5964 wpa_s->p2p_persistent_go_freq = 0;
5965 wpa_s->p2p_go_ht40 = 0;
5966 wpa_s->p2p_go_vht = 0;
5967
5968 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5969 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5970 break;
5971 }
5972 if (wpa_s == NULL) {
5973 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5974 return -1;
5975 }
5976
5977 ssid = wpa_s->current_ssid;
5978 if (ssid == NULL) {
5979 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5980 "invitation");
5981 return -1;
5982 }
5983
5984 wpa_s->global->p2p_invite_group = wpa_s;
5985 persistent = ssid->p2p_persistent_group &&
5986 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5987 ssid->ssid, ssid->ssid_len);
5988
5989 if (ssid->mode == WPAS_MODE_P2P_GO) {
5990 role = P2P_INVITE_ROLE_ACTIVE_GO;
5991 bssid = wpa_s->own_addr;
5992 if (go_dev_addr == NULL)
5993 go_dev_addr = wpa_s->global->p2p_dev_addr;
5994 freq = ssid->frequency;
5995 } else {
5996 role = P2P_INVITE_ROLE_CLIENT;
5997 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5998 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5999 "invite to current group");
6000 return -1;
6001 }
6002 bssid = wpa_s->bssid;
6003 if (go_dev_addr == NULL &&
6004 !is_zero_ether_addr(wpa_s->go_dev_addr))
6005 go_dev_addr = wpa_s->go_dev_addr;
6006 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6007 (int) wpa_s->assoc_freq;
6008 }
6009 wpa_s->parent->pending_invite_ssid_id = -1;
6010
6011 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6012 return -1;
6013
6014 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6015 role == P2P_INVITE_ROLE_ACTIVE_GO);
6016 if (res)
6017 return res;
6018 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6019
6020 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6021 ssid->ssid, ssid->ssid_len, force_freq,
6022 go_dev_addr, persistent, pref_freq, -1);
6023 }
6024
6025
wpas_p2p_completed(struct wpa_supplicant * wpa_s)6026 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6027 {
6028 struct wpa_ssid *ssid = wpa_s->current_ssid;
6029 u8 go_dev_addr[ETH_ALEN];
6030 int network_id = -1;
6031 int persistent;
6032 int freq;
6033 u8 ip[3 * 4];
6034 char ip_addr[100];
6035
6036 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6037 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6038 wpa_s->parent, NULL);
6039 }
6040
6041 if (!wpa_s->show_group_started || !ssid)
6042 return;
6043
6044 wpa_s->show_group_started = 0;
6045
6046 os_memset(go_dev_addr, 0, ETH_ALEN);
6047 if (ssid->bssid_set)
6048 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6049 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6050 ssid->ssid_len);
6051 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6052
6053 if (wpa_s->global->p2p_group_formation == wpa_s)
6054 wpa_s->global->p2p_group_formation = NULL;
6055
6056 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6057 (int) wpa_s->assoc_freq;
6058
6059 ip_addr[0] = '\0';
6060 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6061 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
6062 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6063 ip[0], ip[1], ip[2], ip[3],
6064 ip[4], ip[5], ip[6], ip[7],
6065 ip[8], ip[9], ip[10], ip[11]);
6066 }
6067
6068 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6069 ssid->passphrase == NULL && ssid->psk_set ?
6070 ssid->psk : NULL,
6071 ssid->passphrase, go_dev_addr, persistent,
6072 ip_addr);
6073
6074 if (persistent)
6075 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6076 ssid, go_dev_addr);
6077 if (network_id < 0)
6078 network_id = ssid->id;
6079 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6080 }
6081
6082
wpas_p2p_presence_req(struct wpa_supplicant * wpa_s,u32 duration1,u32 interval1,u32 duration2,u32 interval2)6083 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6084 u32 interval1, u32 duration2, u32 interval2)
6085 {
6086 int ret;
6087
6088 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6089 return -1;
6090
6091 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6092 wpa_s->current_ssid == NULL ||
6093 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6094 return -1;
6095
6096 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6097 wpa_s->own_addr, wpa_s->assoc_freq,
6098 duration1, interval1, duration2, interval2);
6099 if (ret == 0)
6100 wpa_s->waiting_presence_resp = 1;
6101
6102 return ret;
6103 }
6104
6105
wpas_p2p_ext_listen(struct wpa_supplicant * wpa_s,unsigned int period,unsigned int interval)6106 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6107 unsigned int interval)
6108 {
6109 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6110 return -1;
6111
6112 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6113 }
6114
6115
wpas_p2p_is_client(struct wpa_supplicant * wpa_s)6116 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6117 {
6118 if (wpa_s->current_ssid == NULL) {
6119 /*
6120 * current_ssid can be cleared when P2P client interface gets
6121 * disconnected, so assume this interface was used as P2P
6122 * client.
6123 */
6124 return 1;
6125 }
6126 return wpa_s->current_ssid->p2p_group &&
6127 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6128 }
6129
6130
wpas_p2p_group_idle_timeout(void * eloop_ctx,void * timeout_ctx)6131 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6132 {
6133 struct wpa_supplicant *wpa_s = eloop_ctx;
6134
6135 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6136 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6137 "disabled");
6138 return;
6139 }
6140
6141 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6142 "group");
6143 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6144 }
6145
6146
wpas_p2p_set_group_idle_timeout(struct wpa_supplicant * wpa_s)6147 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6148 {
6149 int timeout;
6150
6151 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6152 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6153
6154 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6155 return;
6156
6157 timeout = wpa_s->conf->p2p_group_idle;
6158 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6159 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6160 timeout = P2P_MAX_CLIENT_IDLE;
6161
6162 if (timeout == 0)
6163 return;
6164
6165 if (timeout < 0) {
6166 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6167 timeout = 0; /* special client mode no-timeout */
6168 else
6169 return;
6170 }
6171
6172 if (wpa_s->p2p_in_provisioning) {
6173 /*
6174 * Use the normal group formation timeout during the
6175 * provisioning phase to avoid terminating this process too
6176 * early due to group idle timeout.
6177 */
6178 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6179 "during provisioning");
6180 return;
6181 }
6182
6183 if (wpa_s->show_group_started) {
6184 /*
6185 * Use the normal group formation timeout between the end of
6186 * the provisioning phase and completion of 4-way handshake to
6187 * avoid terminating this process too early due to group idle
6188 * timeout.
6189 */
6190 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6191 "while waiting for initial 4-way handshake to "
6192 "complete");
6193 return;
6194 }
6195
6196 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6197 timeout);
6198 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6199 wpa_s, NULL);
6200 }
6201
6202
6203 /* Returns 1 if the interface was removed */
wpas_p2p_deauth_notif(struct wpa_supplicant * wpa_s,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len,int locally_generated)6204 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6205 u16 reason_code, const u8 *ie, size_t ie_len,
6206 int locally_generated)
6207 {
6208 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6209 return 0;
6210
6211 if (!locally_generated)
6212 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6213 ie_len);
6214
6215 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6216 wpa_s->current_ssid &&
6217 wpa_s->current_ssid->p2p_group &&
6218 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6219 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6220 "session is ending");
6221 if (wpas_p2p_group_delete(wpa_s,
6222 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6223 > 0)
6224 return 1;
6225 }
6226
6227 return 0;
6228 }
6229
6230
wpas_p2p_disassoc_notif(struct wpa_supplicant * wpa_s,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len,int locally_generated)6231 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6232 u16 reason_code, const u8 *ie, size_t ie_len,
6233 int locally_generated)
6234 {
6235 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6236 return;
6237
6238 if (!locally_generated)
6239 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6240 ie_len);
6241 }
6242
6243
wpas_p2p_update_config(struct wpa_supplicant * wpa_s)6244 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6245 {
6246 struct p2p_data *p2p = wpa_s->global->p2p;
6247
6248 if (p2p == NULL)
6249 return;
6250
6251 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6252 return;
6253
6254 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6255 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6256
6257 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6258 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6259
6260 if (wpa_s->wps &&
6261 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6262 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6263
6264 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6265 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6266
6267 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6268 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6269 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6270 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6271 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6272 }
6273
6274 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6275 p2p_set_sec_dev_types(p2p,
6276 (void *) wpa_s->conf->sec_device_type,
6277 wpa_s->conf->num_sec_device_types);
6278
6279 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6280 int i;
6281 p2p_remove_wps_vendor_extensions(p2p);
6282 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6283 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6284 continue;
6285 p2p_add_wps_vendor_extension(
6286 p2p, wpa_s->conf->wps_vendor_ext[i]);
6287 }
6288 }
6289
6290 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6291 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6292 char country[3];
6293 country[0] = wpa_s->conf->country[0];
6294 country[1] = wpa_s->conf->country[1];
6295 country[2] = 0x04;
6296 p2p_set_country(p2p, country);
6297 }
6298
6299 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6300 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6301 wpa_s->conf->p2p_ssid_postfix ?
6302 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6303 0);
6304 }
6305
6306 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6307 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6308
6309 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6310 u8 reg_class, channel;
6311 int ret;
6312 unsigned int r;
6313 u8 channel_forced;
6314
6315 if (wpa_s->conf->p2p_listen_reg_class &&
6316 wpa_s->conf->p2p_listen_channel) {
6317 reg_class = wpa_s->conf->p2p_listen_reg_class;
6318 channel = wpa_s->conf->p2p_listen_channel;
6319 channel_forced = 1;
6320 } else {
6321 reg_class = 81;
6322 /*
6323 * Pick one of the social channels randomly as the
6324 * listen channel.
6325 */
6326 os_get_random((u8 *) &r, sizeof(r));
6327 channel = 1 + (r % 3) * 5;
6328 channel_forced = 0;
6329 }
6330 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6331 channel_forced);
6332 if (ret)
6333 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6334 "failed: %d", ret);
6335 }
6336 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6337 u8 op_reg_class, op_channel, cfg_op_channel;
6338 int ret = 0;
6339 unsigned int r;
6340 if (wpa_s->conf->p2p_oper_reg_class &&
6341 wpa_s->conf->p2p_oper_channel) {
6342 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6343 op_channel = wpa_s->conf->p2p_oper_channel;
6344 cfg_op_channel = 1;
6345 } else {
6346 op_reg_class = 81;
6347 /*
6348 * Use random operation channel from (1, 6, 11)
6349 *if no other preference is indicated.
6350 */
6351 os_get_random((u8 *) &r, sizeof(r));
6352 op_channel = 1 + (r % 3) * 5;
6353 cfg_op_channel = 0;
6354 }
6355 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6356 cfg_op_channel);
6357 if (ret)
6358 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6359 "failed: %d", ret);
6360 }
6361
6362 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6363 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6364 wpa_s->conf->p2p_pref_chan) < 0) {
6365 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6366 "update failed");
6367 }
6368
6369 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6370 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6371 "update failed");
6372 }
6373 }
6374
6375 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6376 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6377 }
6378
6379
wpas_p2p_set_noa(struct wpa_supplicant * wpa_s,u8 count,int start,int duration)6380 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6381 int duration)
6382 {
6383 if (!wpa_s->ap_iface)
6384 return -1;
6385 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6386 duration);
6387 }
6388
6389
wpas_p2p_set_cross_connect(struct wpa_supplicant * wpa_s,int enabled)6390 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6391 {
6392 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6393 return -1;
6394
6395 wpa_s->global->cross_connection = enabled;
6396 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6397
6398 if (!enabled) {
6399 struct wpa_supplicant *iface;
6400
6401 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6402 {
6403 if (iface->cross_connect_enabled == 0)
6404 continue;
6405
6406 iface->cross_connect_enabled = 0;
6407 iface->cross_connect_in_use = 0;
6408 wpa_msg_global(iface->parent, MSG_INFO,
6409 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6410 iface->ifname,
6411 iface->cross_connect_uplink);
6412 }
6413 }
6414
6415 return 0;
6416 }
6417
6418
wpas_p2p_enable_cross_connect(struct wpa_supplicant * uplink)6419 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6420 {
6421 struct wpa_supplicant *iface;
6422
6423 if (!uplink->global->cross_connection)
6424 return;
6425
6426 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6427 if (!iface->cross_connect_enabled)
6428 continue;
6429 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6430 0)
6431 continue;
6432 if (iface->ap_iface == NULL)
6433 continue;
6434 if (iface->cross_connect_in_use)
6435 continue;
6436
6437 iface->cross_connect_in_use = 1;
6438 wpa_msg_global(iface->parent, MSG_INFO,
6439 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6440 iface->ifname, iface->cross_connect_uplink);
6441 }
6442 }
6443
6444
wpas_p2p_disable_cross_connect(struct wpa_supplicant * uplink)6445 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6446 {
6447 struct wpa_supplicant *iface;
6448
6449 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6450 if (!iface->cross_connect_enabled)
6451 continue;
6452 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6453 0)
6454 continue;
6455 if (!iface->cross_connect_in_use)
6456 continue;
6457
6458 wpa_msg_global(iface->parent, MSG_INFO,
6459 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6460 iface->ifname, iface->cross_connect_uplink);
6461 iface->cross_connect_in_use = 0;
6462 }
6463 }
6464
6465
wpas_p2p_notif_connected(struct wpa_supplicant * wpa_s)6466 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6467 {
6468 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6469 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6470 wpa_s->cross_connect_disallowed)
6471 wpas_p2p_disable_cross_connect(wpa_s);
6472 else
6473 wpas_p2p_enable_cross_connect(wpa_s);
6474 if (!wpa_s->ap_iface &&
6475 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6476 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6477 }
6478
6479
wpas_p2p_notif_disconnected(struct wpa_supplicant * wpa_s)6480 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6481 {
6482 wpas_p2p_disable_cross_connect(wpa_s);
6483 if (!wpa_s->ap_iface &&
6484 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6485 wpa_s, NULL))
6486 wpas_p2p_set_group_idle_timeout(wpa_s);
6487 }
6488
6489
wpas_p2p_cross_connect_setup(struct wpa_supplicant * wpa_s)6490 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6491 {
6492 struct wpa_supplicant *iface;
6493
6494 if (!wpa_s->global->cross_connection)
6495 return;
6496
6497 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6498 if (iface == wpa_s)
6499 continue;
6500 if (iface->drv_flags &
6501 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6502 continue;
6503 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6504 continue;
6505
6506 wpa_s->cross_connect_enabled = 1;
6507 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6508 sizeof(wpa_s->cross_connect_uplink));
6509 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6510 "%s to %s whenever uplink is available",
6511 wpa_s->ifname, wpa_s->cross_connect_uplink);
6512
6513 if (iface->ap_iface || iface->current_ssid == NULL ||
6514 iface->current_ssid->mode != WPAS_MODE_INFRA ||
6515 iface->cross_connect_disallowed ||
6516 iface->wpa_state != WPA_COMPLETED)
6517 break;
6518
6519 wpa_s->cross_connect_in_use = 1;
6520 wpa_msg_global(wpa_s->parent, MSG_INFO,
6521 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6522 wpa_s->ifname, wpa_s->cross_connect_uplink);
6523 break;
6524 }
6525 }
6526
6527
wpas_p2p_notif_pbc_overlap(struct wpa_supplicant * wpa_s)6528 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6529 {
6530 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6531 !wpa_s->p2p_in_provisioning)
6532 return 0; /* not P2P client operation */
6533
6534 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6535 "session overlap");
6536 if (wpa_s != wpa_s->parent)
6537 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6538 wpas_p2p_group_formation_failed(wpa_s);
6539 return 1;
6540 }
6541
6542
wpas_p2p_pbc_overlap_cb(void * eloop_ctx,void * timeout_ctx)6543 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6544 {
6545 struct wpa_supplicant *wpa_s = eloop_ctx;
6546 wpas_p2p_notif_pbc_overlap(wpa_s);
6547 }
6548
6549
wpas_p2p_update_channel_list(struct wpa_supplicant * wpa_s)6550 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6551 {
6552 struct p2p_channels chan, cli_chan;
6553 struct wpa_supplicant *ifs;
6554
6555 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6556 return;
6557
6558 os_memset(&chan, 0, sizeof(chan));
6559 os_memset(&cli_chan, 0, sizeof(cli_chan));
6560 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6561 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6562 "channel list");
6563 return;
6564 }
6565
6566 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6567
6568 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6569 int freq;
6570 if (!ifs->current_ssid ||
6571 !ifs->current_ssid->p2p_group ||
6572 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6573 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6574 continue;
6575 freq = ifs->current_ssid->frequency;
6576 if (freq_included(&chan, freq)) {
6577 wpa_dbg(ifs, MSG_DEBUG,
6578 "P2P GO operating frequency %d MHz in valid range",
6579 freq);
6580 continue;
6581 }
6582
6583 wpa_dbg(ifs, MSG_DEBUG,
6584 "P2P GO operating in invalid frequency %d MHz", freq);
6585 /* TODO: Consider using CSA or removing the group within
6586 * wpa_supplicant */
6587 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6588 }
6589 }
6590
6591
wpas_p2p_scan_res_ignore(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)6592 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6593 struct wpa_scan_results *scan_res)
6594 {
6595 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6596 }
6597
6598
wpas_p2p_cancel(struct wpa_supplicant * wpa_s)6599 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6600 {
6601 struct wpa_global *global = wpa_s->global;
6602 int found = 0;
6603 const u8 *peer;
6604
6605 if (global->p2p == NULL)
6606 return -1;
6607
6608 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6609
6610 if (wpa_s->pending_interface_name[0] &&
6611 !is_zero_ether_addr(wpa_s->pending_interface_addr))
6612 found = 1;
6613
6614 peer = p2p_get_go_neg_peer(global->p2p);
6615 if (peer) {
6616 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6617 MACSTR, MAC2STR(peer));
6618 p2p_unauthorize(global->p2p, peer);
6619 found = 1;
6620 }
6621
6622 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6623 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6624 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6625 found = 1;
6626 }
6627
6628 if (wpa_s->pending_pd_before_join) {
6629 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6630 wpa_s->pending_pd_before_join = 0;
6631 found = 1;
6632 }
6633
6634 wpas_p2p_stop_find(wpa_s);
6635
6636 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6637 if (wpa_s == global->p2p_group_formation &&
6638 (wpa_s->p2p_in_provisioning ||
6639 wpa_s->parent->pending_interface_type ==
6640 WPA_IF_P2P_CLIENT)) {
6641 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6642 "formation found - cancelling",
6643 wpa_s->ifname);
6644 found = 1;
6645 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6646 wpa_s->parent, NULL);
6647 if (wpa_s->p2p_in_provisioning) {
6648 wpas_group_formation_completed(wpa_s, 0);
6649 break;
6650 }
6651 wpas_p2p_group_delete(wpa_s,
6652 P2P_GROUP_REMOVAL_REQUESTED);
6653 break;
6654 } else if (wpa_s->p2p_in_invitation) {
6655 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6656 wpa_s->ifname);
6657 found = 1;
6658 wpas_p2p_group_formation_failed(wpa_s);
6659 }
6660 }
6661
6662 if (!found) {
6663 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6664 return -1;
6665 }
6666
6667 return 0;
6668 }
6669
6670
wpas_p2p_interface_unavailable(struct wpa_supplicant * wpa_s)6671 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6672 {
6673 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6674 return;
6675
6676 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6677 "being available anymore");
6678 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6679 }
6680
6681
wpas_p2p_update_best_channels(struct wpa_supplicant * wpa_s,int freq_24,int freq_5,int freq_overall)6682 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6683 int freq_24, int freq_5, int freq_overall)
6684 {
6685 struct p2p_data *p2p = wpa_s->global->p2p;
6686 if (p2p == NULL)
6687 return;
6688 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6689 }
6690
6691
wpas_p2p_unauthorize(struct wpa_supplicant * wpa_s,const char * addr)6692 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6693 {
6694 u8 peer[ETH_ALEN];
6695 struct p2p_data *p2p = wpa_s->global->p2p;
6696
6697 if (p2p == NULL)
6698 return -1;
6699
6700 if (hwaddr_aton(addr, peer))
6701 return -1;
6702
6703 return p2p_unauthorize(p2p, peer);
6704 }
6705
6706
6707 /**
6708 * wpas_p2p_disconnect - Disconnect from a P2P Group
6709 * @wpa_s: Pointer to wpa_supplicant data
6710 * Returns: 0 on success, -1 on failure
6711 *
6712 * This can be used to disconnect from a group in which the local end is a P2P
6713 * Client or to end a P2P Group in case the local end is the Group Owner. If a
6714 * virtual network interface was created for this group, that interface will be
6715 * removed. Otherwise, only the configured P2P group network will be removed
6716 * from the interface.
6717 */
wpas_p2p_disconnect(struct wpa_supplicant * wpa_s)6718 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6719 {
6720
6721 if (wpa_s == NULL)
6722 return -1;
6723
6724 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6725 -1 : 0;
6726 }
6727
6728
wpas_p2p_in_progress(struct wpa_supplicant * wpa_s)6729 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6730 {
6731 int ret;
6732
6733 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6734 return 0;
6735
6736 ret = p2p_in_progress(wpa_s->global->p2p);
6737 if (ret == 0) {
6738 /*
6739 * Check whether there is an ongoing WPS provisioning step (or
6740 * other parts of group formation) on another interface since
6741 * p2p_in_progress() does not report this to avoid issues for
6742 * scans during such provisioning step.
6743 */
6744 if (wpa_s->global->p2p_group_formation &&
6745 wpa_s->global->p2p_group_formation != wpa_s) {
6746 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6747 "in group formation",
6748 wpa_s->global->p2p_group_formation->ifname);
6749 ret = 1;
6750 }
6751 }
6752
6753 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6754 struct os_reltime now;
6755 os_get_reltime(&now);
6756 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6757 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6758 /* Wait for the first client has expired */
6759 wpa_s->global->p2p_go_wait_client.sec = 0;
6760 } else {
6761 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6762 ret = 1;
6763 }
6764 }
6765
6766 return ret;
6767 }
6768
6769
wpas_p2p_network_removed(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)6770 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6771 struct wpa_ssid *ssid)
6772 {
6773 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6774 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6775 wpa_s->parent, NULL) > 0) {
6776 /**
6777 * Remove the network by scheduling the group formation
6778 * timeout to happen immediately. The teardown code
6779 * needs to be scheduled to run asynch later so that we
6780 * don't delete data from under ourselves unexpectedly.
6781 * Calling wpas_p2p_group_formation_timeout directly
6782 * causes a series of crashes in WPS failure scenarios.
6783 */
6784 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6785 "P2P group network getting removed");
6786 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6787 wpa_s->parent, NULL);
6788 }
6789 }
6790
6791
wpas_p2p_get_persistent(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * ssid,size_t ssid_len)6792 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6793 const u8 *addr, const u8 *ssid,
6794 size_t ssid_len)
6795 {
6796 struct wpa_ssid *s;
6797 size_t i;
6798
6799 for (s = wpa_s->conf->ssid; s; s = s->next) {
6800 if (s->disabled != 2)
6801 continue;
6802 if (ssid &&
6803 (ssid_len != s->ssid_len ||
6804 os_memcmp(ssid, s->ssid, ssid_len) != 0))
6805 continue;
6806 if (addr == NULL) {
6807 if (s->mode == WPAS_MODE_P2P_GO)
6808 return s;
6809 continue;
6810 }
6811 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6812 return s; /* peer is GO in the persistent group */
6813 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6814 continue;
6815 for (i = 0; i < s->num_p2p_clients; i++) {
6816 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6817 addr, ETH_ALEN) == 0)
6818 return s; /* peer is P2P client in persistent
6819 * group */
6820 }
6821 }
6822
6823 return NULL;
6824 }
6825
6826
wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant * wpa_s,const u8 * addr)6827 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6828 const u8 *addr)
6829 {
6830 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6831 wpa_s->parent, NULL) > 0) {
6832 /*
6833 * This can happen if WPS provisioning step is not terminated
6834 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6835 * peer was able to connect, there is no need to time out group
6836 * formation after this, though. In addition, this is used with
6837 * the initial connection wait on the GO as a separate formation
6838 * timeout and as such, expected to be hit after the initial WPS
6839 * provisioning step.
6840 */
6841 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6842 }
6843 if (!wpa_s->p2p_go_group_formation_completed) {
6844 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6845 wpa_s->p2p_go_group_formation_completed = 1;
6846 wpa_s->global->p2p_group_formation = NULL;
6847 wpa_s->p2p_in_provisioning = 0;
6848 wpa_s->p2p_in_invitation = 0;
6849 }
6850 wpa_s->global->p2p_go_wait_client.sec = 0;
6851 if (addr == NULL)
6852 return;
6853 wpas_p2p_add_persistent_group_client(wpa_s, addr);
6854 }
6855
6856
wpas_p2p_fallback_to_go_neg(struct wpa_supplicant * wpa_s,int group_added)6857 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6858 int group_added)
6859 {
6860 struct wpa_supplicant *group = wpa_s;
6861 if (wpa_s->global->p2p_group_formation)
6862 group = wpa_s->global->p2p_group_formation;
6863 wpa_s = wpa_s->parent;
6864 offchannel_send_action_done(wpa_s);
6865 if (group_added)
6866 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6867 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6868 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6869 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6870 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6871 wpa_s->p2p_persistent_id,
6872 wpa_s->p2p_pd_before_go_neg,
6873 wpa_s->p2p_go_ht40,
6874 wpa_s->p2p_go_vht);
6875 }
6876
6877
wpas_p2p_scan_no_go_seen(struct wpa_supplicant * wpa_s)6878 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6879 {
6880 if (!wpa_s->p2p_fallback_to_go_neg ||
6881 wpa_s->p2p_in_provisioning <= 5)
6882 return 0;
6883
6884 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6885 return 0; /* peer operating as a GO */
6886
6887 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6888 "fallback to GO Negotiation");
6889 wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6890
6891 return 1;
6892 }
6893
6894
wpas_p2p_search_delay(struct wpa_supplicant * wpa_s)6895 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6896 {
6897 struct wpa_supplicant *ifs;
6898
6899 if (wpa_s->wpa_state > WPA_SCANNING) {
6900 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6901 "concurrent operation",
6902 wpa_s->conf->p2p_search_delay);
6903 return wpa_s->conf->p2p_search_delay;
6904 }
6905
6906 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6907 radio_list) {
6908 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6909 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6910 "delay due to concurrent operation on "
6911 "interface %s",
6912 wpa_s->conf->p2p_search_delay,
6913 ifs->ifname);
6914 return wpa_s->conf->p2p_search_delay;
6915 }
6916 }
6917
6918 return 0;
6919 }
6920
6921
wpas_p2p_remove_psk_entry(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)6922 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6923 struct wpa_ssid *s, const u8 *addr,
6924 int iface_addr)
6925 {
6926 struct psk_list_entry *psk, *tmp;
6927 int changed = 0;
6928
6929 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6930 list) {
6931 if ((iface_addr && !psk->p2p &&
6932 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6933 (!iface_addr && psk->p2p &&
6934 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6935 wpa_dbg(wpa_s, MSG_DEBUG,
6936 "P2P: Remove persistent group PSK list entry for "
6937 MACSTR " p2p=%u",
6938 MAC2STR(psk->addr), psk->p2p);
6939 dl_list_del(&psk->list);
6940 os_free(psk);
6941 changed++;
6942 }
6943 }
6944
6945 return changed;
6946 }
6947
6948
wpas_p2p_new_psk_cb(struct wpa_supplicant * wpa_s,const u8 * mac_addr,const u8 * p2p_dev_addr,const u8 * psk,size_t psk_len)6949 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6950 const u8 *p2p_dev_addr,
6951 const u8 *psk, size_t psk_len)
6952 {
6953 struct wpa_ssid *ssid = wpa_s->current_ssid;
6954 struct wpa_ssid *persistent;
6955 struct psk_list_entry *p, *last;
6956
6957 if (psk_len != sizeof(p->psk))
6958 return;
6959
6960 if (p2p_dev_addr) {
6961 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6962 " p2p_dev_addr=" MACSTR,
6963 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6964 if (is_zero_ether_addr(p2p_dev_addr))
6965 p2p_dev_addr = NULL;
6966 } else {
6967 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6968 MAC2STR(mac_addr));
6969 }
6970
6971 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6972 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6973 /* To be added to persistent group once created */
6974 if (wpa_s->global->add_psk == NULL) {
6975 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6976 if (wpa_s->global->add_psk == NULL)
6977 return;
6978 }
6979 p = wpa_s->global->add_psk;
6980 if (p2p_dev_addr) {
6981 p->p2p = 1;
6982 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6983 } else {
6984 p->p2p = 0;
6985 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6986 }
6987 os_memcpy(p->psk, psk, psk_len);
6988 return;
6989 }
6990
6991 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6992 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6993 return;
6994 }
6995
6996 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6997 ssid->ssid_len);
6998 if (!persistent) {
6999 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7000 return;
7001 }
7002
7003 p = os_zalloc(sizeof(*p));
7004 if (p == NULL)
7005 return;
7006 if (p2p_dev_addr) {
7007 p->p2p = 1;
7008 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7009 } else {
7010 p->p2p = 0;
7011 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7012 }
7013 os_memcpy(p->psk, psk, psk_len);
7014
7015 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7016 (last = dl_list_last(&persistent->psk_list,
7017 struct psk_list_entry, list))) {
7018 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7019 MACSTR " (p2p=%u) to make room for a new one",
7020 MAC2STR(last->addr), last->p2p);
7021 dl_list_del(&last->list);
7022 os_free(last);
7023 }
7024
7025 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7026 p2p_dev_addr ? p2p_dev_addr : mac_addr,
7027 p2p_dev_addr == NULL);
7028 if (p2p_dev_addr) {
7029 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7030 MACSTR, MAC2STR(p2p_dev_addr));
7031 } else {
7032 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7033 MAC2STR(mac_addr));
7034 }
7035 dl_list_add(&persistent->psk_list, &p->list);
7036
7037 if (wpa_s->parent->conf->update_config &&
7038 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7039 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7040 }
7041
7042
wpas_p2p_remove_psk(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)7043 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7044 struct wpa_ssid *s, const u8 *addr,
7045 int iface_addr)
7046 {
7047 int res;
7048
7049 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7050 if (res > 0 && wpa_s->conf->update_config &&
7051 wpa_config_write(wpa_s->confname, wpa_s->conf))
7052 wpa_dbg(wpa_s, MSG_DEBUG,
7053 "P2P: Failed to update configuration");
7054 }
7055
7056
wpas_p2p_remove_client_go(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)7057 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7058 const u8 *peer, int iface_addr)
7059 {
7060 struct hostapd_data *hapd;
7061 struct hostapd_wpa_psk *psk, *prev, *rem;
7062 struct sta_info *sta;
7063
7064 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7065 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7066 return;
7067
7068 /* Remove per-station PSK entry */
7069 hapd = wpa_s->ap_iface->bss[0];
7070 prev = NULL;
7071 psk = hapd->conf->ssid.wpa_psk;
7072 while (psk) {
7073 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7074 (!iface_addr &&
7075 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7076 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7077 MACSTR " iface_addr=%d",
7078 MAC2STR(peer), iface_addr);
7079 if (prev)
7080 prev->next = psk->next;
7081 else
7082 hapd->conf->ssid.wpa_psk = psk->next;
7083 rem = psk;
7084 psk = psk->next;
7085 os_free(rem);
7086 } else {
7087 prev = psk;
7088 psk = psk->next;
7089 }
7090 }
7091
7092 /* Disconnect from group */
7093 if (iface_addr)
7094 sta = ap_get_sta(hapd, peer);
7095 else
7096 sta = ap_get_sta_p2p(hapd, peer);
7097 if (sta) {
7098 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7099 " (iface_addr=%d) from group",
7100 MAC2STR(peer), iface_addr);
7101 hostapd_drv_sta_deauth(hapd, sta->addr,
7102 WLAN_REASON_DEAUTH_LEAVING);
7103 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7104 }
7105 }
7106
7107
wpas_p2p_remove_client(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)7108 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7109 int iface_addr)
7110 {
7111 struct wpa_ssid *s;
7112 struct wpa_supplicant *w;
7113
7114 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7115
7116 /* Remove from any persistent group */
7117 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
7118 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7119 continue;
7120 if (!iface_addr)
7121 wpas_remove_persistent_peer(wpa_s, s, peer, 0);
7122 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
7123 }
7124
7125 /* Remove from any operating group */
7126 for (w = wpa_s->global->ifaces; w; w = w->next)
7127 wpas_p2p_remove_client_go(w, peer, iface_addr);
7128 }
7129
7130
wpas_p2p_psk_failure_removal(void * eloop_ctx,void * timeout_ctx)7131 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7132 {
7133 struct wpa_supplicant *wpa_s = eloop_ctx;
7134 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7135 }
7136
7137
wpas_p2p_group_freq_conflict(void * eloop_ctx,void * timeout_ctx)7138 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7139 {
7140 struct wpa_supplicant *wpa_s = eloop_ctx;
7141
7142 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7143 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7144 }
7145
7146
wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant * wpa_s,int freq,struct wpa_ssid * ssid)7147 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7148 struct wpa_ssid *ssid)
7149 {
7150 struct wpa_supplicant *iface;
7151
7152 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7153 if (!iface->current_ssid ||
7154 iface->current_ssid->frequency == freq ||
7155 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7156 !iface->current_ssid->p2p_group))
7157 continue;
7158
7159 /* Remove the connection with least priority */
7160 if (!wpas_is_p2p_prioritized(iface)) {
7161 /* STA connection has priority over existing
7162 * P2P connection, so remove the interface. */
7163 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7164 eloop_register_timeout(0, 0,
7165 wpas_p2p_group_freq_conflict,
7166 iface, NULL);
7167 /* If connection in progress is P2P connection, do not
7168 * proceed for the connection. */
7169 if (wpa_s == iface)
7170 return -1;
7171 else
7172 return 0;
7173 } else {
7174 /* P2P connection has priority, disable the STA network
7175 */
7176 wpa_supplicant_disable_network(wpa_s->global->ifaces,
7177 ssid);
7178 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7179 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7180 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7181 ETH_ALEN);
7182 /* If P2P connection is in progress, continue
7183 * connecting...*/
7184 if (wpa_s == iface)
7185 return 0;
7186 else
7187 return -1;
7188 }
7189 }
7190
7191 return 0;
7192 }
7193
7194
wpas_p2p_4way_hs_failed(struct wpa_supplicant * wpa_s)7195 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7196 {
7197 struct wpa_ssid *ssid = wpa_s->current_ssid;
7198
7199 if (ssid == NULL || !ssid->p2p_group)
7200 return 0;
7201
7202 if (wpa_s->p2p_last_4way_hs_fail &&
7203 wpa_s->p2p_last_4way_hs_fail == ssid) {
7204 u8 go_dev_addr[ETH_ALEN];
7205 struct wpa_ssid *persistent;
7206
7207 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7208 ssid->ssid,
7209 ssid->ssid_len) <= 0) {
7210 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7211 goto disconnect;
7212 }
7213
7214 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7215 MACSTR, MAC2STR(go_dev_addr));
7216 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7217 ssid->ssid,
7218 ssid->ssid_len);
7219 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7220 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7221 goto disconnect;
7222 }
7223 wpa_msg_global(wpa_s->parent, MSG_INFO,
7224 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7225 persistent->id);
7226 disconnect:
7227 wpa_s->p2p_last_4way_hs_fail = NULL;
7228 /*
7229 * Remove the group from a timeout to avoid issues with caller
7230 * continuing to use the interface if this is on a P2P group
7231 * interface.
7232 */
7233 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7234 wpa_s, NULL);
7235 return 1;
7236 }
7237
7238 wpa_s->p2p_last_4way_hs_fail = ssid;
7239 return 0;
7240 }
7241
7242
7243 #ifdef CONFIG_WPS_NFC
7244
wpas_p2p_nfc_handover(int ndef,struct wpabuf * wsc,struct wpabuf * p2p)7245 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7246 struct wpabuf *p2p)
7247 {
7248 struct wpabuf *ret;
7249 size_t wsc_len;
7250
7251 if (p2p == NULL) {
7252 wpabuf_free(wsc);
7253 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7254 return NULL;
7255 }
7256
7257 wsc_len = wsc ? wpabuf_len(wsc) : 0;
7258 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7259 if (ret == NULL) {
7260 wpabuf_free(wsc);
7261 wpabuf_free(p2p);
7262 return NULL;
7263 }
7264
7265 wpabuf_put_be16(ret, wsc_len);
7266 if (wsc)
7267 wpabuf_put_buf(ret, wsc);
7268 wpabuf_put_be16(ret, wpabuf_len(p2p));
7269 wpabuf_put_buf(ret, p2p);
7270
7271 wpabuf_free(wsc);
7272 wpabuf_free(p2p);
7273 wpa_hexdump_buf(MSG_DEBUG,
7274 "P2P: Generated NFC connection handover message", ret);
7275
7276 if (ndef && ret) {
7277 struct wpabuf *tmp;
7278 tmp = ndef_build_p2p(ret);
7279 wpabuf_free(ret);
7280 if (tmp == NULL) {
7281 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7282 return NULL;
7283 }
7284 ret = tmp;
7285 }
7286
7287 return ret;
7288 }
7289
7290
wpas_p2p_cli_freq(struct wpa_supplicant * wpa_s,struct wpa_ssid ** ssid,u8 * go_dev_addr)7291 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7292 struct wpa_ssid **ssid, u8 *go_dev_addr)
7293 {
7294 struct wpa_supplicant *iface;
7295
7296 if (go_dev_addr)
7297 os_memset(go_dev_addr, 0, ETH_ALEN);
7298 if (ssid)
7299 *ssid = NULL;
7300 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7301 if (iface->wpa_state < WPA_ASSOCIATING ||
7302 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7303 !iface->current_ssid->p2p_group ||
7304 iface->current_ssid->mode != WPAS_MODE_INFRA)
7305 continue;
7306 if (ssid)
7307 *ssid = iface->current_ssid;
7308 if (go_dev_addr)
7309 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7310 return iface->assoc_freq;
7311 }
7312 return 0;
7313 }
7314
7315
wpas_p2p_nfc_handover_req(struct wpa_supplicant * wpa_s,int ndef)7316 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7317 int ndef)
7318 {
7319 struct wpabuf *wsc, *p2p;
7320 struct wpa_ssid *ssid;
7321 u8 go_dev_addr[ETH_ALEN];
7322 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7323
7324 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7325 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7326 return NULL;
7327 }
7328
7329 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7330 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7331 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7332 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7333 return NULL;
7334 }
7335
7336 if (cli_freq == 0) {
7337 wsc = wps_build_nfc_handover_req_p2p(
7338 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7339 } else
7340 wsc = NULL;
7341 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7342 go_dev_addr, ssid ? ssid->ssid : NULL,
7343 ssid ? ssid->ssid_len : 0);
7344
7345 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7346 }
7347
7348
wpas_p2p_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,int tag)7349 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7350 int ndef, int tag)
7351 {
7352 struct wpabuf *wsc, *p2p;
7353 struct wpa_ssid *ssid;
7354 u8 go_dev_addr[ETH_ALEN];
7355 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7356
7357 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7358 return NULL;
7359
7360 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7361 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7362 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7363 return NULL;
7364
7365 if (cli_freq == 0) {
7366 wsc = wps_build_nfc_handover_sel_p2p(
7367 wpa_s->parent->wps,
7368 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7369 DEV_PW_NFC_CONNECTION_HANDOVER,
7370 wpa_s->conf->wps_nfc_dh_pubkey,
7371 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7372 } else
7373 wsc = NULL;
7374 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7375 go_dev_addr, ssid ? ssid->ssid : NULL,
7376 ssid ? ssid->ssid_len : 0);
7377
7378 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7379 }
7380
7381
wpas_p2p_nfc_join_group(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params)7382 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7383 struct p2p_nfc_params *params)
7384 {
7385 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7386 "connection handover (freq=%d)",
7387 params->go_freq);
7388
7389 if (params->go_freq && params->go_ssid_len) {
7390 wpa_s->p2p_wps_method = WPS_NFC;
7391 wpa_s->pending_join_wps_method = WPS_NFC;
7392 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7393 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7394 ETH_ALEN);
7395 return wpas_p2p_join_start(wpa_s, params->go_freq,
7396 params->go_ssid,
7397 params->go_ssid_len);
7398 }
7399
7400 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7401 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7402 params->go_freq, -1, 0, 1, 1);
7403 }
7404
7405
wpas_p2p_nfc_auth_join(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int tag)7406 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7407 struct p2p_nfc_params *params, int tag)
7408 {
7409 int res, persistent;
7410 struct wpa_ssid *ssid;
7411
7412 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7413 "connection handover");
7414 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7415 ssid = wpa_s->current_ssid;
7416 if (ssid == NULL)
7417 continue;
7418 if (ssid->mode != WPAS_MODE_P2P_GO)
7419 continue;
7420 if (wpa_s->ap_iface == NULL)
7421 continue;
7422 break;
7423 }
7424 if (wpa_s == NULL) {
7425 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7426 return -1;
7427 }
7428
7429 if (wpa_s->parent->p2p_oob_dev_pw_id !=
7430 DEV_PW_NFC_CONNECTION_HANDOVER &&
7431 !wpa_s->parent->p2p_oob_dev_pw) {
7432 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7433 return -1;
7434 }
7435 res = wpas_ap_wps_add_nfc_pw(
7436 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7437 wpa_s->parent->p2p_oob_dev_pw,
7438 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7439 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7440 if (res)
7441 return res;
7442
7443 if (!tag) {
7444 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7445 return 0;
7446 }
7447
7448 if (!params->peer ||
7449 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7450 return 0;
7451
7452 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7453 " to join", MAC2STR(params->peer->p2p_device_addr));
7454
7455 wpa_s->global->p2p_invite_group = wpa_s;
7456 persistent = ssid->p2p_persistent_group &&
7457 wpas_p2p_get_persistent(wpa_s->parent,
7458 params->peer->p2p_device_addr,
7459 ssid->ssid, ssid->ssid_len);
7460 wpa_s->parent->pending_invite_ssid_id = -1;
7461
7462 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7463 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7464 ssid->ssid, ssid->ssid_len, ssid->frequency,
7465 wpa_s->global->p2p_dev_addr, persistent, 0,
7466 wpa_s->parent->p2p_oob_dev_pw_id);
7467 }
7468
7469
wpas_p2p_nfc_init_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)7470 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7471 struct p2p_nfc_params *params,
7472 int forced_freq)
7473 {
7474 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7475 "connection handover");
7476 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7477 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7478 forced_freq, -1, 0, 1, 1);
7479 }
7480
7481
wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)7482 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7483 struct p2p_nfc_params *params,
7484 int forced_freq)
7485 {
7486 int res;
7487
7488 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7489 "connection handover");
7490 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7491 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7492 forced_freq, -1, 0, 1, 1);
7493 if (res)
7494 return res;
7495
7496 res = wpas_p2p_listen(wpa_s, 60);
7497 if (res) {
7498 p2p_unauthorize(wpa_s->global->p2p,
7499 params->peer->p2p_device_addr);
7500 }
7501
7502 return res;
7503 }
7504
7505
wpas_p2p_nfc_connection_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int sel,int tag,int forced_freq)7506 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7507 const struct wpabuf *data,
7508 int sel, int tag, int forced_freq)
7509 {
7510 const u8 *pos, *end;
7511 u16 len, id;
7512 struct p2p_nfc_params params;
7513 int res;
7514
7515 os_memset(¶ms, 0, sizeof(params));
7516 params.sel = sel;
7517
7518 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7519
7520 pos = wpabuf_head(data);
7521 end = pos + wpabuf_len(data);
7522
7523 if (end - pos < 2) {
7524 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7525 "attributes");
7526 return -1;
7527 }
7528 len = WPA_GET_BE16(pos);
7529 pos += 2;
7530 if (pos + len > end) {
7531 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7532 "attributes");
7533 return -1;
7534 }
7535 params.wsc_attr = pos;
7536 params.wsc_len = len;
7537 pos += len;
7538
7539 if (end - pos < 2) {
7540 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7541 "attributes");
7542 return -1;
7543 }
7544 len = WPA_GET_BE16(pos);
7545 pos += 2;
7546 if (pos + len > end) {
7547 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7548 "attributes");
7549 return -1;
7550 }
7551 params.p2p_attr = pos;
7552 params.p2p_len = len;
7553 pos += len;
7554
7555 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7556 params.wsc_attr, params.wsc_len);
7557 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7558 params.p2p_attr, params.p2p_len);
7559 if (pos < end) {
7560 wpa_hexdump(MSG_DEBUG,
7561 "P2P: Ignored extra data after P2P attributes",
7562 pos, end - pos);
7563 }
7564
7565 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms);
7566 if (res)
7567 return res;
7568
7569 if (params.next_step == NO_ACTION)
7570 return 0;
7571
7572 if (params.next_step == BOTH_GO) {
7573 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7574 MAC2STR(params.peer->p2p_device_addr));
7575 return 0;
7576 }
7577
7578 if (params.next_step == PEER_CLIENT) {
7579 if (!is_zero_ether_addr(params.go_dev_addr)) {
7580 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7581 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7582 " ssid=\"%s\"",
7583 MAC2STR(params.peer->p2p_device_addr),
7584 params.go_freq,
7585 MAC2STR(params.go_dev_addr),
7586 wpa_ssid_txt(params.go_ssid,
7587 params.go_ssid_len));
7588 } else {
7589 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7590 "peer=" MACSTR " freq=%d",
7591 MAC2STR(params.peer->p2p_device_addr),
7592 params.go_freq);
7593 }
7594 return 0;
7595 }
7596
7597 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7598 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7599 MACSTR, MAC2STR(params.peer->p2p_device_addr));
7600 return 0;
7601 }
7602
7603 wpabuf_free(wpa_s->p2p_oob_dev_pw);
7604 wpa_s->p2p_oob_dev_pw = NULL;
7605
7606 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7607 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7608 "received");
7609 return -1;
7610 }
7611
7612 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7613 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7614 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7615 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7616 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7617 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7618 wpa_s->p2p_peer_oob_pk_hash_known = 1;
7619
7620 if (tag) {
7621 if (id < 0x10) {
7622 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7623 "peer OOB Device Password Id %u", id);
7624 return -1;
7625 }
7626 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7627 "Device Password Id %u", id);
7628 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7629 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7630 params.oob_dev_pw_len -
7631 WPS_OOB_PUBKEY_HASH_LEN - 2);
7632 wpa_s->p2p_oob_dev_pw_id = id;
7633 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7634 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7635 params.oob_dev_pw_len -
7636 WPS_OOB_PUBKEY_HASH_LEN - 2);
7637 if (wpa_s->p2p_oob_dev_pw == NULL)
7638 return -1;
7639
7640 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7641 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7642 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7643 return -1;
7644 } else {
7645 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7646 "without Device Password");
7647 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7648 }
7649
7650 switch (params.next_step) {
7651 case NO_ACTION:
7652 case BOTH_GO:
7653 case PEER_CLIENT:
7654 /* already covered above */
7655 return 0;
7656 case JOIN_GROUP:
7657 return wpas_p2p_nfc_join_group(wpa_s, ¶ms);
7658 case AUTH_JOIN:
7659 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag);
7660 case INIT_GO_NEG:
7661 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq);
7662 case RESP_GO_NEG:
7663 /* TODO: use own OOB Dev Pw */
7664 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq);
7665 }
7666
7667 return -1;
7668 }
7669
7670
wpas_p2p_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int forced_freq)7671 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7672 const struct wpabuf *data, int forced_freq)
7673 {
7674 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7675 return -1;
7676
7677 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7678 }
7679
7680
wpas_p2p_nfc_report_handover(struct wpa_supplicant * wpa_s,int init,const struct wpabuf * req,const struct wpabuf * sel,int forced_freq)7681 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7682 const struct wpabuf *req,
7683 const struct wpabuf *sel, int forced_freq)
7684 {
7685 struct wpabuf *tmp;
7686 int ret;
7687
7688 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7689 return -1;
7690
7691 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7692
7693 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7694 wpabuf_head(req), wpabuf_len(req));
7695 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7696 wpabuf_head(sel), wpabuf_len(sel));
7697 if (forced_freq)
7698 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7699 tmp = ndef_parse_p2p(init ? sel : req);
7700 if (tmp == NULL) {
7701 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7702 return -1;
7703 }
7704
7705 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7706 forced_freq);
7707 wpabuf_free(tmp);
7708
7709 return ret;
7710 }
7711
7712
wpas_p2p_nfc_tag_enabled(struct wpa_supplicant * wpa_s,int enabled)7713 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7714 {
7715 const u8 *if_addr;
7716 int go_intent = wpa_s->conf->p2p_go_intent;
7717 struct wpa_supplicant *iface;
7718
7719 if (wpa_s->global->p2p == NULL)
7720 return -1;
7721
7722 if (!enabled) {
7723 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7724 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7725 {
7726 if (!iface->ap_iface)
7727 continue;
7728 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7729 }
7730 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7731 0, NULL);
7732 if (wpa_s->p2p_nfc_tag_enabled)
7733 wpas_p2p_remove_pending_group_interface(wpa_s);
7734 wpa_s->p2p_nfc_tag_enabled = 0;
7735 return 0;
7736 }
7737
7738 if (wpa_s->global->p2p_disabled)
7739 return -1;
7740
7741 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7742 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7743 wpa_s->conf->wps_nfc_dev_pw == NULL ||
7744 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7745 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7746 "to allow static handover cases");
7747 return -1;
7748 }
7749
7750 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7751
7752 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7753 wpabuf_free(wpa_s->p2p_oob_dev_pw);
7754 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7755 if (wpa_s->p2p_oob_dev_pw == NULL)
7756 return -1;
7757 wpa_s->p2p_peer_oob_pk_hash_known = 0;
7758
7759 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7760 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7761 /*
7762 * P2P Group Interface present and the command came on group
7763 * interface, so enable the token for the current interface.
7764 */
7765 wpa_s->create_p2p_iface = 0;
7766 } else {
7767 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7768 }
7769
7770 if (wpa_s->create_p2p_iface) {
7771 enum wpa_driver_if_type iftype;
7772 /* Prepare to add a new interface for the group */
7773 iftype = WPA_IF_P2P_GROUP;
7774 if (go_intent == 15)
7775 iftype = WPA_IF_P2P_GO;
7776 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7777 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7778 "interface for the group");
7779 return -1;
7780 }
7781
7782 if_addr = wpa_s->pending_interface_addr;
7783 } else
7784 if_addr = wpa_s->own_addr;
7785
7786 wpa_s->p2p_nfc_tag_enabled = enabled;
7787
7788 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7789 struct hostapd_data *hapd;
7790 if (iface->ap_iface == NULL)
7791 continue;
7792 hapd = iface->ap_iface->bss[0];
7793 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7794 hapd->conf->wps_nfc_dh_pubkey =
7795 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7796 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7797 hapd->conf->wps_nfc_dh_privkey =
7798 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7799 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7800 hapd->conf->wps_nfc_dev_pw =
7801 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7802 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7803
7804 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7805 wpa_dbg(iface, MSG_DEBUG,
7806 "P2P: Failed to enable NFC Tag for GO");
7807 }
7808 }
7809 p2p_set_authorized_oob_dev_pw_id(
7810 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7811 if_addr);
7812
7813 return 0;
7814 }
7815
7816 #endif /* CONFIG_WPS_NFC */
7817
7818
wpas_p2p_optimize_listen_channel(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)7819 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
7820 struct wpa_used_freq_data *freqs,
7821 unsigned int num)
7822 {
7823 u8 curr_chan, cand, chan;
7824 unsigned int i;
7825
7826 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
7827 for (i = 0, cand = 0; i < num; i++) {
7828 ieee80211_freq_to_chan(freqs[i].freq, &chan);
7829 if (curr_chan == chan) {
7830 cand = 0;
7831 break;
7832 }
7833
7834 if (chan == 1 || chan == 6 || chan == 11)
7835 cand = chan;
7836 }
7837
7838 if (cand) {
7839 wpa_dbg(wpa_s, MSG_DEBUG,
7840 "P2P: Update Listen channel to %u baased on operating channel",
7841 cand);
7842 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
7843 }
7844 }
7845
7846
wpas_p2p_indicate_state_change(struct wpa_supplicant * wpa_s)7847 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
7848 {
7849 struct wpa_used_freq_data *freqs;
7850 unsigned int num = wpa_s->num_multichan_concurrent;
7851
7852 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7853 return;
7854
7855 /*
7856 * If possible, optimize the Listen channel to be a channel that is
7857 * already used by one of the other interfaces.
7858 */
7859 if (!wpa_s->conf->p2p_optimize_listen_chan)
7860 return;
7861
7862 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
7863 return;
7864
7865 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7866 if (!freqs)
7867 return;
7868
7869 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7870
7871 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7872 os_free(freqs);
7873 }
7874
7875
wpas_p2p_deinit_iface(struct wpa_supplicant * wpa_s)7876 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
7877 {
7878 if (wpa_s == wpa_s->parent)
7879 wpas_p2p_group_remove(wpa_s, "*");
7880 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
7881 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
7882 "the management interface is being removed");
7883 wpas_p2p_deinit_global(wpa_s->global);
7884 }
7885 }
7886
7887
wpas_p2p_ap_deinit(struct wpa_supplicant * wpa_s)7888 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
7889 {
7890 if (wpa_s->ap_iface->bss)
7891 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
7892 wpas_p2p_group_deinit(wpa_s);
7893 }
7894