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P2P: Add support for IP address assignment in 4-way handshake
[thirdparty/hostap.git] / wpa_supplicant / p2p_supplicant.c
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/p2p_hostapd.h"
24 #include "eapol_supp/eapol_supp_sm.h"
25 #include "rsn_supp/wpa.h"
26 #include "wpa_supplicant_i.h"
27 #include "driver_i.h"
28 #include "ap.h"
29 #include "config_ssid.h"
30 #include "config.h"
31 #include "notify.h"
32 #include "scan.h"
33 #include "bss.h"
34 #include "offchannel.h"
35 #include "wps_supplicant.h"
36 #include "p2p_supplicant.h"
37 #include "wifi_display.h"
38
39
40 /*
41 * How many times to try to scan to find the GO before giving up on join
42 * request.
43 */
44 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
45
46 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
47
48 #ifndef P2P_MAX_CLIENT_IDLE
49 /*
50 * How many seconds to try to reconnect to the GO when connection in P2P client
51 * role has been lost.
52 */
53 #define P2P_MAX_CLIENT_IDLE 10
54 #endif /* P2P_MAX_CLIENT_IDLE */
55
56 #ifndef P2P_MAX_INITIAL_CONN_WAIT
57 /*
58 * How many seconds to wait for initial 4-way handshake to get completed after
59 * WPS provisioning step.
60 */
61 #define P2P_MAX_INITIAL_CONN_WAIT 10
62 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
63
64 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
65 /*
66 * How many seconds to wait for initial 4-way handshake to get completed after
67 * WPS provisioning step on the GO. This controls the extra time the P2P
68 * operation is considered to be in progress (e.g., to delay other scans) after
69 * WPS provisioning has been completed on the GO during group formation.
70 */
71 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
72 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
73
74 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
75 /*
76 * How many seconds to wait for initial 4-way handshake to get completed after
77 * re-invocation of a persistent group on the GO when the client is expected
78 * to connect automatically (no user interaction).
79 */
80 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
81 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
82
83 #ifndef P2P_CONCURRENT_SEARCH_DELAY
84 #define P2P_CONCURRENT_SEARCH_DELAY 500
85 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
86
87 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
88
89 enum p2p_group_removal_reason {
90 P2P_GROUP_REMOVAL_UNKNOWN,
91 P2P_GROUP_REMOVAL_SILENT,
92 P2P_GROUP_REMOVAL_FORMATION_FAILED,
93 P2P_GROUP_REMOVAL_REQUESTED,
94 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
95 P2P_GROUP_REMOVAL_UNAVAILABLE,
96 P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
97 P2P_GROUP_REMOVAL_PSK_FAILURE,
98 P2P_GROUP_REMOVAL_FREQ_CONFLICT
99 };
100
101
102 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
103 static struct wpa_supplicant *
104 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
105 int go);
106 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
108 const u8 *ssid, size_t ssid_len);
109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
111 const u8 *dev_addr, enum p2p_wps_method wps_method,
112 int auto_join, 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
124
125 /*
126 * Get the number of concurrent channels that the HW can operate, but that are
127 * currently not in use by any of the wpa_supplicant interfaces.
128 */
129 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
130 {
131 int *freqs;
132 int num, unused;
133
134 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
135 if (!freqs)
136 return -1;
137
138 num = get_shared_radio_freqs(wpa_s, freqs,
139 wpa_s->num_multichan_concurrent);
140 os_free(freqs);
141
142 unused = wpa_s->num_multichan_concurrent - num;
143 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
144 return unused;
145 }
146
147
148 /*
149 * Get the frequencies that are currently in use by one or more of the virtual
150 * interfaces, and that are also valid for P2P operation.
151 */
152 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
153 int *p2p_freqs, unsigned int len)
154 {
155 int *freqs;
156 unsigned int num, i, j;
157
158 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
159 if (!freqs)
160 return -1;
161
162 num = get_shared_radio_freqs(wpa_s, freqs,
163 wpa_s->num_multichan_concurrent);
164
165 os_memset(p2p_freqs, 0, sizeof(int) * len);
166
167 for (i = 0, j = 0; i < num && j < len; i++) {
168 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
169 p2p_freqs[j++] = freqs[i];
170 }
171
172 os_free(freqs);
173
174 dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
175
176 return j;
177 }
178
179
180 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
181 int freq)
182 {
183 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
184 return;
185 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
186 freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
187 wpas_p2p_num_unused_channels(wpa_s) > 0) {
188 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
189 freq);
190 freq = 0;
191 }
192 p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
193 }
194
195
196 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
197 struct wpa_scan_results *scan_res)
198 {
199 size_t i;
200
201 if (wpa_s->p2p_scan_work) {
202 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
203 wpa_s->p2p_scan_work = NULL;
204 radio_work_done(work);
205 }
206
207 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
208 return;
209
210 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
211 (int) scan_res->num);
212
213 for (i = 0; i < scan_res->num; i++) {
214 struct wpa_scan_res *bss = scan_res->res[i];
215 struct os_reltime time_tmp_age, entry_ts;
216 const u8 *ies;
217 size_t ies_len;
218
219 time_tmp_age.sec = bss->age / 1000;
220 time_tmp_age.usec = (bss->age % 1000) * 1000;
221 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
222
223 ies = (const u8 *) (bss + 1);
224 ies_len = bss->ie_len;
225 if (bss->beacon_ie_len > 0 &&
226 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
227 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
228 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
229 MACSTR, MAC2STR(bss->bssid));
230 ies = ies + ies_len;
231 ies_len = bss->beacon_ie_len;
232 }
233
234
235 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
236 bss->freq, &entry_ts, bss->level,
237 ies, ies_len) > 0)
238 break;
239 }
240
241 p2p_scan_res_handled(wpa_s->global->p2p);
242 }
243
244
245 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
246 {
247 struct wpa_supplicant *wpa_s = work->wpa_s;
248 struct wpa_driver_scan_params *params = work->ctx;
249 int ret;
250
251 if (deinit) {
252 wpa_scan_free_params(params);
253 return;
254 }
255
256 ret = wpa_drv_scan(wpa_s, params);
257 wpa_scan_free_params(params);
258 work->ctx = NULL;
259 if (ret) {
260 radio_work_done(work);
261 return;
262 }
263
264 os_get_reltime(&wpa_s->scan_trigger_time);
265 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
266 wpa_s->own_scan_requested = 1;
267 wpa_s->p2p_scan_work = work;
268 }
269
270
271 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
272 unsigned int num_req_dev_types,
273 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
274 {
275 struct wpa_supplicant *wpa_s = ctx;
276 struct wpa_driver_scan_params *params = NULL;
277 struct wpabuf *wps_ie, *ies;
278 size_t ielen;
279 u8 *n;
280
281 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
282 return -1;
283
284 if (wpa_s->p2p_scan_work) {
285 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
286 return -1;
287 }
288
289 params = os_zalloc(sizeof(*params));
290 if (params == NULL)
291 return -1;
292
293 /* P2P Wildcard SSID */
294 params->num_ssids = 1;
295 n = os_malloc(P2P_WILDCARD_SSID_LEN);
296 if (n == NULL)
297 goto fail;
298 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
299 params->ssids[0].ssid = n;
300 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
301
302 wpa_s->wps->dev.p2p = 1;
303 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
304 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
305 num_req_dev_types, req_dev_types);
306 if (wps_ie == NULL)
307 goto fail;
308
309 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
310 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
311 if (ies == NULL) {
312 wpabuf_free(wps_ie);
313 goto fail;
314 }
315 wpabuf_put_buf(ies, wps_ie);
316 wpabuf_free(wps_ie);
317
318 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
319
320 params->p2p_probe = 1;
321 n = os_malloc(wpabuf_len(ies));
322 if (n == NULL) {
323 wpabuf_free(ies);
324 goto fail;
325 }
326 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
327 params->extra_ies = n;
328 params->extra_ies_len = wpabuf_len(ies);
329 wpabuf_free(ies);
330
331 switch (type) {
332 case P2P_SCAN_SOCIAL:
333 params->freqs = os_malloc(4 * sizeof(int));
334 if (params->freqs == NULL)
335 goto fail;
336 params->freqs[0] = 2412;
337 params->freqs[1] = 2437;
338 params->freqs[2] = 2462;
339 params->freqs[3] = 0;
340 break;
341 case P2P_SCAN_FULL:
342 break;
343 case P2P_SCAN_SOCIAL_PLUS_ONE:
344 params->freqs = os_malloc(5 * 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] = freq;
351 params->freqs[4] = 0;
352 break;
353 }
354
355 radio_remove_unstarted_work(wpa_s, "p2p-scan");
356 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
357 params) < 0)
358 goto fail;
359 return 0;
360
361 fail:
362 wpa_scan_free_params(params);
363 return -1;
364 }
365
366
367 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
368 {
369 switch (p2p_group_interface) {
370 case P2P_GROUP_INTERFACE_PENDING:
371 return WPA_IF_P2P_GROUP;
372 case P2P_GROUP_INTERFACE_GO:
373 return WPA_IF_P2P_GO;
374 case P2P_GROUP_INTERFACE_CLIENT:
375 return WPA_IF_P2P_CLIENT;
376 }
377
378 return WPA_IF_P2P_GROUP;
379 }
380
381
382 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
383 const u8 *ssid,
384 size_t ssid_len, int *go)
385 {
386 struct wpa_ssid *s;
387
388 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
389 for (s = wpa_s->conf->ssid; s; s = s->next) {
390 if (s->disabled != 0 || !s->p2p_group ||
391 s->ssid_len != ssid_len ||
392 os_memcmp(ssid, s->ssid, ssid_len) != 0)
393 continue;
394 if (s->mode == WPAS_MODE_P2P_GO &&
395 s != wpa_s->current_ssid)
396 continue;
397 if (go)
398 *go = s->mode == WPAS_MODE_P2P_GO;
399 return wpa_s;
400 }
401 }
402
403 return NULL;
404 }
405
406
407 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
408 enum p2p_group_removal_reason removal_reason)
409 {
410 struct wpa_ssid *ssid;
411 char *gtype;
412 const char *reason;
413
414 ssid = wpa_s->current_ssid;
415 if (ssid == NULL) {
416 /*
417 * The current SSID was not known, but there may still be a
418 * pending P2P group interface waiting for provisioning or a
419 * P2P group that is trying to reconnect.
420 */
421 ssid = wpa_s->conf->ssid;
422 while (ssid) {
423 if (ssid->p2p_group && ssid->disabled != 2)
424 break;
425 ssid = ssid->next;
426 }
427 if (ssid == NULL &&
428 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
429 {
430 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
431 "not found");
432 return -1;
433 }
434 }
435 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
436 gtype = "GO";
437 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
438 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
439 wpa_s->reassociate = 0;
440 wpa_s->disconnected = 1;
441 wpa_supplicant_deauthenticate(wpa_s,
442 WLAN_REASON_DEAUTH_LEAVING);
443 gtype = "client";
444 } else
445 gtype = "GO";
446 if (wpa_s->cross_connect_in_use) {
447 wpa_s->cross_connect_in_use = 0;
448 wpa_msg_global(wpa_s->parent, MSG_INFO,
449 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
450 wpa_s->ifname, wpa_s->cross_connect_uplink);
451 }
452 switch (removal_reason) {
453 case P2P_GROUP_REMOVAL_REQUESTED:
454 reason = " reason=REQUESTED";
455 break;
456 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
457 reason = " reason=FORMATION_FAILED";
458 break;
459 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
460 reason = " reason=IDLE";
461 break;
462 case P2P_GROUP_REMOVAL_UNAVAILABLE:
463 reason = " reason=UNAVAILABLE";
464 break;
465 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
466 reason = " reason=GO_ENDING_SESSION";
467 break;
468 case P2P_GROUP_REMOVAL_PSK_FAILURE:
469 reason = " reason=PSK_FAILURE";
470 break;
471 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
472 reason = " reason=FREQ_CONFLICT";
473 break;
474 default:
475 reason = "";
476 break;
477 }
478 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
479 wpa_msg_global(wpa_s->parent, MSG_INFO,
480 P2P_EVENT_GROUP_REMOVED "%s %s%s",
481 wpa_s->ifname, gtype, reason);
482 }
483
484 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
485 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
486 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
487 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
488 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
489 wpa_s->parent, NULL) > 0) {
490 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
491 "timeout");
492 wpa_s->p2p_in_provisioning = 0;
493 }
494
495 /*
496 * Make sure wait for the first client does not remain active after the
497 * group has been removed.
498 */
499 wpa_s->global->p2p_go_wait_client.sec = 0;
500
501 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
502 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
503
504 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
505 struct wpa_global *global;
506 char *ifname;
507 enum wpa_driver_if_type type;
508 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
509 wpa_s->ifname);
510 global = wpa_s->global;
511 ifname = os_strdup(wpa_s->ifname);
512 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
513 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
514 wpa_s = global->ifaces;
515 if (wpa_s && ifname)
516 wpa_drv_if_remove(wpa_s, type, ifname);
517 os_free(ifname);
518 return 1;
519 }
520
521 if (!wpa_s->p2p_go_group_formation_completed) {
522 wpa_s->global->p2p_group_formation = NULL;
523 wpa_s->p2p_in_provisioning = 0;
524 }
525
526 wpa_s->show_group_started = 0;
527 os_free(wpa_s->go_params);
528 wpa_s->go_params = NULL;
529
530 wpa_s->waiting_presence_resp = 0;
531
532 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
533 if (ssid && (ssid->p2p_group ||
534 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
535 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
536 int id = ssid->id;
537 if (ssid == wpa_s->current_ssid) {
538 wpa_sm_set_config(wpa_s->wpa, NULL);
539 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
540 wpa_s->current_ssid = NULL;
541 }
542 /*
543 * Networks objects created during any P2P activities are not
544 * exposed out as they might/will confuse certain non-P2P aware
545 * applications since these network objects won't behave like
546 * regular ones.
547 *
548 * Likewise, we don't send out network removed signals for such
549 * network objects.
550 */
551 wpa_config_remove_network(wpa_s->conf, id);
552 wpa_supplicant_clear_status(wpa_s);
553 wpa_supplicant_cancel_sched_scan(wpa_s);
554 } else {
555 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
556 "found");
557 }
558 if (wpa_s->ap_iface)
559 wpa_supplicant_ap_deinit(wpa_s);
560 else
561 wpa_drv_deinit_p2p_cli(wpa_s);
562
563 return 0;
564 }
565
566
567 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
568 u8 *go_dev_addr,
569 const u8 *ssid, size_t ssid_len)
570 {
571 struct wpa_bss *bss;
572 const u8 *bssid;
573 struct wpabuf *p2p;
574 u8 group_capab;
575 const u8 *addr;
576
577 if (wpa_s->go_params)
578 bssid = wpa_s->go_params->peer_interface_addr;
579 else
580 bssid = wpa_s->bssid;
581
582 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
583 if (bss == NULL) {
584 u8 iface_addr[ETH_ALEN];
585 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
586 iface_addr) == 0)
587 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
588 }
589 if (bss == NULL) {
590 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
591 "group is persistent - BSS " MACSTR " not found",
592 MAC2STR(bssid));
593 return 0;
594 }
595
596 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
597 if (p2p == NULL)
598 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
599 P2P_IE_VENDOR_TYPE);
600 if (p2p == NULL) {
601 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
602 "group is persistent - BSS " MACSTR
603 " did not include P2P IE", MAC2STR(bssid));
604 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
605 (u8 *) (bss + 1), bss->ie_len);
606 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
607 ((u8 *) bss + 1) + bss->ie_len,
608 bss->beacon_ie_len);
609 return 0;
610 }
611
612 group_capab = p2p_get_group_capab(p2p);
613 addr = p2p_get_go_dev_addr(p2p);
614 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
615 "group_capab=0x%x", group_capab);
616 if (addr) {
617 os_memcpy(go_dev_addr, addr, ETH_ALEN);
618 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
619 MAC2STR(addr));
620 } else
621 os_memset(go_dev_addr, 0, ETH_ALEN);
622 wpabuf_free(p2p);
623
624 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
625 "go_dev_addr=" MACSTR,
626 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
627
628 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
629 }
630
631
632 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
633 struct wpa_ssid *ssid,
634 const u8 *go_dev_addr)
635 {
636 struct wpa_ssid *s;
637 int changed = 0;
638
639 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
640 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
641 for (s = wpa_s->conf->ssid; s; s = s->next) {
642 if (s->disabled == 2 &&
643 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
644 s->ssid_len == ssid->ssid_len &&
645 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
646 break;
647 }
648
649 if (s) {
650 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
651 "entry");
652 if (ssid->passphrase && !s->passphrase)
653 changed = 1;
654 else if (ssid->passphrase && s->passphrase &&
655 os_strcmp(ssid->passphrase, s->passphrase) != 0)
656 changed = 1;
657 } else {
658 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
659 "entry");
660 changed = 1;
661 s = wpa_config_add_network(wpa_s->conf);
662 if (s == NULL)
663 return -1;
664
665 /*
666 * Instead of network_added we emit persistent_group_added
667 * notification. Also to keep the defense checks in
668 * persistent_group obj registration method, we set the
669 * relevant flags in s to designate it as a persistent group.
670 */
671 s->p2p_group = 1;
672 s->p2p_persistent_group = 1;
673 wpas_notify_persistent_group_added(wpa_s, s);
674 wpa_config_set_network_defaults(s);
675 }
676
677 s->p2p_group = 1;
678 s->p2p_persistent_group = 1;
679 s->disabled = 2;
680 s->bssid_set = 1;
681 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
682 s->mode = ssid->mode;
683 s->auth_alg = WPA_AUTH_ALG_OPEN;
684 s->key_mgmt = WPA_KEY_MGMT_PSK;
685 s->proto = WPA_PROTO_RSN;
686 s->pairwise_cipher = WPA_CIPHER_CCMP;
687 s->export_keys = 1;
688 if (ssid->passphrase) {
689 os_free(s->passphrase);
690 s->passphrase = os_strdup(ssid->passphrase);
691 }
692 if (ssid->psk_set) {
693 s->psk_set = 1;
694 os_memcpy(s->psk, ssid->psk, 32);
695 }
696 if (s->passphrase && !s->psk_set)
697 wpa_config_update_psk(s);
698 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
699 os_free(s->ssid);
700 s->ssid = os_malloc(ssid->ssid_len);
701 }
702 if (s->ssid) {
703 s->ssid_len = ssid->ssid_len;
704 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
705 }
706 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
707 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
708 wpa_s->global->add_psk = NULL;
709 changed = 1;
710 }
711
712 #ifndef CONFIG_NO_CONFIG_WRITE
713 if (changed && wpa_s->conf->update_config &&
714 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
715 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
716 }
717 #endif /* CONFIG_NO_CONFIG_WRITE */
718
719 return s->id;
720 }
721
722
723 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
724 const u8 *addr)
725 {
726 struct wpa_ssid *ssid, *s;
727 u8 *n;
728 size_t i;
729 int found = 0;
730
731 ssid = wpa_s->current_ssid;
732 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
733 !ssid->p2p_persistent_group)
734 return;
735
736 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
737 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
738 continue;
739
740 if (s->ssid_len == ssid->ssid_len &&
741 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
742 break;
743 }
744
745 if (s == NULL)
746 return;
747
748 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
749 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
750 ETH_ALEN) != 0)
751 continue;
752
753 if (i == s->num_p2p_clients - 1)
754 return; /* already the most recent entry */
755
756 /* move the entry to mark it most recent */
757 os_memmove(s->p2p_client_list + i * ETH_ALEN,
758 s->p2p_client_list + (i + 1) * ETH_ALEN,
759 (s->num_p2p_clients - i - 1) * ETH_ALEN);
760 os_memcpy(s->p2p_client_list +
761 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
762 found = 1;
763 break;
764 }
765
766 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
767 n = os_realloc_array(s->p2p_client_list,
768 s->num_p2p_clients + 1, ETH_ALEN);
769 if (n == NULL)
770 return;
771 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
772 s->p2p_client_list = n;
773 s->num_p2p_clients++;
774 } else if (!found) {
775 /* Not enough room for an additional entry - drop the oldest
776 * entry */
777 os_memmove(s->p2p_client_list,
778 s->p2p_client_list + ETH_ALEN,
779 (s->num_p2p_clients - 1) * ETH_ALEN);
780 os_memcpy(s->p2p_client_list +
781 (s->num_p2p_clients - 1) * ETH_ALEN,
782 addr, ETH_ALEN);
783 }
784
785 #ifndef CONFIG_NO_CONFIG_WRITE
786 if (wpa_s->parent->conf->update_config &&
787 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
788 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
789 #endif /* CONFIG_NO_CONFIG_WRITE */
790 }
791
792
793 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
794 int success)
795 {
796 struct wpa_ssid *ssid;
797 const char *ssid_txt;
798 int client;
799 int persistent;
800 u8 go_dev_addr[ETH_ALEN];
801 int network_id = -1;
802
803 /*
804 * This callback is likely called for the main interface. Update wpa_s
805 * to use the group interface if a new interface was created for the
806 * group.
807 */
808 if (wpa_s->global->p2p_group_formation)
809 wpa_s = wpa_s->global->p2p_group_formation;
810 if (wpa_s->p2p_go_group_formation_completed) {
811 wpa_s->global->p2p_group_formation = NULL;
812 wpa_s->p2p_in_provisioning = 0;
813 }
814
815 if (!success) {
816 wpa_msg_global(wpa_s->parent, MSG_INFO,
817 P2P_EVENT_GROUP_FORMATION_FAILURE);
818 wpas_p2p_group_delete(wpa_s,
819 P2P_GROUP_REMOVAL_FORMATION_FAILED);
820 return;
821 }
822
823 wpa_msg_global(wpa_s->parent, MSG_INFO,
824 P2P_EVENT_GROUP_FORMATION_SUCCESS);
825
826 ssid = wpa_s->current_ssid;
827 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
828 ssid->mode = WPAS_MODE_P2P_GO;
829 p2p_group_notif_formation_done(wpa_s->p2p_group);
830 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
831 }
832
833 persistent = 0;
834 if (ssid) {
835 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
836 client = ssid->mode == WPAS_MODE_INFRA;
837 if (ssid->mode == WPAS_MODE_P2P_GO) {
838 persistent = ssid->p2p_persistent_group;
839 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
840 ETH_ALEN);
841 } else
842 persistent = wpas_p2p_persistent_group(wpa_s,
843 go_dev_addr,
844 ssid->ssid,
845 ssid->ssid_len);
846 } else {
847 ssid_txt = "";
848 client = wpa_s->p2p_group_interface ==
849 P2P_GROUP_INTERFACE_CLIENT;
850 os_memset(go_dev_addr, 0, ETH_ALEN);
851 }
852
853 wpa_s->show_group_started = 0;
854 if (client) {
855 /*
856 * Indicate event only after successfully completed 4-way
857 * handshake, i.e., when the interface is ready for data
858 * packets.
859 */
860 wpa_s->show_group_started = 1;
861 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
862 char psk[65];
863 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
864 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
865 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
866 MACSTR "%s",
867 wpa_s->ifname, ssid_txt, ssid->frequency, psk,
868 MAC2STR(go_dev_addr),
869 persistent ? " [PERSISTENT]" : "");
870 wpas_p2p_cross_connect_setup(wpa_s);
871 wpas_p2p_set_group_idle_timeout(wpa_s);
872 } else {
873 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
874 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
875 "go_dev_addr=" MACSTR "%s",
876 wpa_s->ifname, ssid_txt,
877 ssid ? ssid->frequency : 0,
878 ssid && ssid->passphrase ? ssid->passphrase : "",
879 MAC2STR(go_dev_addr),
880 persistent ? " [PERSISTENT]" : "");
881 wpas_p2p_cross_connect_setup(wpa_s);
882 wpas_p2p_set_group_idle_timeout(wpa_s);
883 }
884
885 if (persistent)
886 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
887 ssid, go_dev_addr);
888 else {
889 os_free(wpa_s->global->add_psk);
890 wpa_s->global->add_psk = NULL;
891 }
892 if (network_id < 0 && ssid)
893 network_id = ssid->id;
894 if (!client) {
895 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
896 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
897 }
898 }
899
900
901 struct send_action_work {
902 unsigned int freq;
903 u8 dst[ETH_ALEN];
904 u8 src[ETH_ALEN];
905 u8 bssid[ETH_ALEN];
906 size_t len;
907 unsigned int wait_time;
908 u8 buf[0];
909 };
910
911
912 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
913 void *timeout_ctx)
914 {
915 struct wpa_supplicant *wpa_s = eloop_ctx;
916
917 if (!wpa_s->p2p_send_action_work)
918 return;
919
920 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
921 os_free(wpa_s->p2p_send_action_work->ctx);
922 radio_work_done(wpa_s->p2p_send_action_work);
923 wpa_s->p2p_send_action_work = NULL;
924 }
925
926
927 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
928 unsigned int freq,
929 const u8 *dst, const u8 *src,
930 const u8 *bssid,
931 const u8 *data, size_t data_len,
932 enum offchannel_send_action_result
933 result)
934 {
935 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
936
937 if (wpa_s->p2p_send_action_work) {
938 struct send_action_work *awork;
939 awork = wpa_s->p2p_send_action_work->ctx;
940 if (awork->wait_time == 0) {
941 os_free(awork);
942 radio_work_done(wpa_s->p2p_send_action_work);
943 wpa_s->p2p_send_action_work = NULL;
944 } else {
945 /*
946 * In theory, this should not be needed, but number of
947 * places in the P2P code is still using non-zero wait
948 * time for the last Action frame in the sequence and
949 * some of these do not call send_action_done().
950 */
951 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
952 wpa_s, NULL);
953 eloop_register_timeout(
954 0, awork->wait_time * 1000,
955 wpas_p2p_send_action_work_timeout,
956 wpa_s, NULL);
957 }
958 }
959
960 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
961 return;
962
963 switch (result) {
964 case OFFCHANNEL_SEND_ACTION_SUCCESS:
965 res = P2P_SEND_ACTION_SUCCESS;
966 break;
967 case OFFCHANNEL_SEND_ACTION_NO_ACK:
968 res = P2P_SEND_ACTION_NO_ACK;
969 break;
970 case OFFCHANNEL_SEND_ACTION_FAILED:
971 res = P2P_SEND_ACTION_FAILED;
972 break;
973 }
974
975 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
976
977 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
978 wpa_s->pending_pd_before_join &&
979 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
980 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
981 wpa_s->p2p_fallback_to_go_neg) {
982 wpa_s->pending_pd_before_join = 0;
983 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
984 "during p2p_connect-auto");
985 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
986 return;
987 }
988 }
989
990
991 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
992 {
993 struct wpa_supplicant *wpa_s = work->wpa_s;
994 struct send_action_work *awork = work->ctx;
995
996 if (deinit) {
997 os_free(awork);
998 return;
999 }
1000
1001 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1002 awork->bssid, awork->buf, awork->len,
1003 awork->wait_time,
1004 wpas_p2p_send_action_tx_status, 1) < 0) {
1005 os_free(awork);
1006 radio_work_done(work);
1007 return;
1008 }
1009 wpa_s->p2p_send_action_work = work;
1010 }
1011
1012
1013 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1014 unsigned int freq, const u8 *dst,
1015 const u8 *src, const u8 *bssid, const u8 *buf,
1016 size_t len, unsigned int wait_time)
1017 {
1018 struct send_action_work *awork;
1019
1020 if (wpa_s->p2p_send_action_work) {
1021 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1022 return -1;
1023 }
1024
1025 awork = os_zalloc(sizeof(*awork) + len);
1026 if (awork == NULL)
1027 return -1;
1028
1029 awork->freq = freq;
1030 os_memcpy(awork->dst, dst, ETH_ALEN);
1031 os_memcpy(awork->src, src, ETH_ALEN);
1032 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1033 awork->len = len;
1034 awork->wait_time = wait_time;
1035 os_memcpy(awork->buf, buf, len);
1036
1037 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1038 wpas_send_action_cb, awork) < 0) {
1039 os_free(awork);
1040 return -1;
1041 }
1042
1043 return 0;
1044 }
1045
1046
1047 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1048 const u8 *src, const u8 *bssid, const u8 *buf,
1049 size_t len, unsigned int wait_time)
1050 {
1051 struct wpa_supplicant *wpa_s = ctx;
1052 int listen_freq = -1, send_freq = -1;
1053
1054 if (wpa_s->p2p_listen_work)
1055 listen_freq = wpa_s->p2p_listen_work->freq;
1056 if (wpa_s->p2p_send_action_work)
1057 send_freq = wpa_s->p2p_send_action_work->freq;
1058 if (listen_freq != (int) freq && send_freq != (int) freq) {
1059 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1060 listen_freq, send_freq);
1061 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1062 len, wait_time);
1063 }
1064
1065 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1066 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1067 wait_time,
1068 wpas_p2p_send_action_tx_status, 1);
1069 }
1070
1071
1072 static void wpas_send_action_done(void *ctx)
1073 {
1074 struct wpa_supplicant *wpa_s = ctx;
1075
1076 if (wpa_s->p2p_send_action_work) {
1077 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1078 wpa_s, NULL);
1079 os_free(wpa_s->p2p_send_action_work->ctx);
1080 radio_work_done(wpa_s->p2p_send_action_work);
1081 wpa_s->p2p_send_action_work = NULL;
1082 }
1083
1084 offchannel_send_action_done(wpa_s);
1085 }
1086
1087
1088 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1089 struct p2p_go_neg_results *params)
1090 {
1091 if (wpa_s->go_params == NULL) {
1092 wpa_s->go_params = os_malloc(sizeof(*params));
1093 if (wpa_s->go_params == NULL)
1094 return -1;
1095 }
1096 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1097 return 0;
1098 }
1099
1100
1101 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1102 struct p2p_go_neg_results *res)
1103 {
1104 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
1105 MAC2STR(res->peer_interface_addr));
1106 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1107 res->ssid, res->ssid_len);
1108 wpa_supplicant_ap_deinit(wpa_s);
1109 wpas_copy_go_neg_results(wpa_s, res);
1110 if (res->wps_method == WPS_PBC) {
1111 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1112 #ifdef CONFIG_WPS_NFC
1113 } else if (res->wps_method == WPS_NFC) {
1114 wpas_wps_start_nfc(wpa_s, res->peer_interface_addr,
1115 wpa_s->parent->p2p_oob_dev_pw,
1116 wpa_s->parent->p2p_oob_dev_pw_id, 1,
1117 wpa_s->parent->p2p_oob_dev_pw_id ==
1118 DEV_PW_NFC_CONNECTION_HANDOVER ?
1119 wpa_s->parent->p2p_peer_oob_pubkey_hash :
1120 NULL,
1121 NULL, 0);
1122 #endif /* CONFIG_WPS_NFC */
1123 } else {
1124 u16 dev_pw_id = DEV_PW_DEFAULT;
1125 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1126 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1127 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1128 wpa_s->p2p_pin, 1, dev_pw_id);
1129 }
1130 }
1131
1132
1133 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1134 struct wpa_ssid *ssid)
1135 {
1136 struct wpa_ssid *persistent;
1137 struct psk_list_entry *psk;
1138 struct hostapd_data *hapd;
1139
1140 if (!wpa_s->ap_iface)
1141 return;
1142
1143 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1144 ssid->ssid_len);
1145 if (persistent == NULL)
1146 return;
1147
1148 hapd = wpa_s->ap_iface->bss[0];
1149
1150 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1151 list) {
1152 struct hostapd_wpa_psk *hpsk;
1153
1154 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1155 MACSTR " psk=%d",
1156 MAC2STR(psk->addr), psk->p2p);
1157 hpsk = os_zalloc(sizeof(*hpsk));
1158 if (hpsk == NULL)
1159 break;
1160 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1161 if (psk->p2p)
1162 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1163 else
1164 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1165 hpsk->next = hapd->conf->ssid.wpa_psk;
1166 hapd->conf->ssid.wpa_psk = hpsk;
1167 }
1168 }
1169
1170
1171 static void p2p_go_configured(void *ctx, void *data)
1172 {
1173 struct wpa_supplicant *wpa_s = ctx;
1174 struct p2p_go_neg_results *params = data;
1175 struct wpa_ssid *ssid;
1176 int network_id = -1;
1177
1178 ssid = wpa_s->current_ssid;
1179 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1180 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1181 if (wpa_s->global->p2p_group_formation == wpa_s)
1182 wpa_s->global->p2p_group_formation = NULL;
1183 if (os_strlen(params->passphrase) > 0) {
1184 wpa_msg_global(wpa_s->parent, MSG_INFO,
1185 P2P_EVENT_GROUP_STARTED
1186 "%s GO ssid=\"%s\" freq=%d "
1187 "passphrase=\"%s\" go_dev_addr=" MACSTR
1188 "%s", wpa_s->ifname,
1189 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1190 ssid->frequency, params->passphrase,
1191 MAC2STR(wpa_s->global->p2p_dev_addr),
1192 params->persistent_group ?
1193 " [PERSISTENT]" : "");
1194 } else {
1195 char psk[65];
1196 wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1197 sizeof(params->psk));
1198 wpa_msg_global(wpa_s->parent, MSG_INFO,
1199 P2P_EVENT_GROUP_STARTED
1200 "%s GO ssid=\"%s\" freq=%d psk=%s "
1201 "go_dev_addr=" MACSTR "%s",
1202 wpa_s->ifname,
1203 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1204 ssid->frequency, psk,
1205 MAC2STR(wpa_s->global->p2p_dev_addr),
1206 params->persistent_group ?
1207 " [PERSISTENT]" : "");
1208 }
1209
1210 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1211 if (params->persistent_group) {
1212 network_id = wpas_p2p_store_persistent_group(
1213 wpa_s->parent, ssid,
1214 wpa_s->global->p2p_dev_addr);
1215 wpas_p2p_add_psk_list(wpa_s, ssid);
1216 }
1217 if (network_id < 0)
1218 network_id = ssid->id;
1219 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1220 wpas_p2p_cross_connect_setup(wpa_s);
1221 wpas_p2p_set_group_idle_timeout(wpa_s);
1222
1223 if (wpa_s->p2p_first_connection_timeout) {
1224 wpa_dbg(wpa_s, MSG_DEBUG,
1225 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1226 wpa_s->p2p_first_connection_timeout);
1227 wpa_s->p2p_go_group_formation_completed = 0;
1228 wpa_s->global->p2p_group_formation = wpa_s;
1229 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1230 wpa_s->parent, NULL);
1231 eloop_register_timeout(
1232 wpa_s->p2p_first_connection_timeout, 0,
1233 wpas_p2p_group_formation_timeout,
1234 wpa_s->parent, NULL);
1235 }
1236
1237 return;
1238 }
1239
1240 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1241 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1242 params->peer_interface_addr)) {
1243 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1244 "filtering");
1245 return;
1246 }
1247 if (params->wps_method == WPS_PBC) {
1248 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1249 params->peer_device_addr);
1250 #ifdef CONFIG_WPS_NFC
1251 } else if (params->wps_method == WPS_NFC) {
1252 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1253 DEV_PW_NFC_CONNECTION_HANDOVER &&
1254 !wpa_s->parent->p2p_oob_dev_pw) {
1255 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1256 return;
1257 }
1258 wpas_ap_wps_add_nfc_pw(
1259 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1260 wpa_s->parent->p2p_oob_dev_pw,
1261 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1262 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1263 #endif /* CONFIG_WPS_NFC */
1264 } else if (wpa_s->p2p_pin[0])
1265 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1266 wpa_s->p2p_pin, NULL, 0, 0);
1267 os_free(wpa_s->go_params);
1268 wpa_s->go_params = NULL;
1269 }
1270
1271
1272 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1273 struct p2p_go_neg_results *params,
1274 int group_formation)
1275 {
1276 struct wpa_ssid *ssid;
1277
1278 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1279 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1280 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1281 "results");
1282 return;
1283 }
1284
1285 ssid = wpa_config_add_network(wpa_s->conf);
1286 if (ssid == NULL) {
1287 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1288 return;
1289 }
1290
1291 wpa_s->show_group_started = 0;
1292
1293 wpa_config_set_network_defaults(ssid);
1294 ssid->temporary = 1;
1295 ssid->p2p_group = 1;
1296 ssid->p2p_persistent_group = params->persistent_group;
1297 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1298 WPAS_MODE_P2P_GO;
1299 ssid->frequency = params->freq;
1300 ssid->ht40 = params->ht40;
1301 ssid->vht = params->vht;
1302 ssid->ssid = os_zalloc(params->ssid_len + 1);
1303 if (ssid->ssid) {
1304 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1305 ssid->ssid_len = params->ssid_len;
1306 }
1307 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1308 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1309 ssid->proto = WPA_PROTO_RSN;
1310 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1311 if (os_strlen(params->passphrase) > 0) {
1312 ssid->passphrase = os_strdup(params->passphrase);
1313 if (ssid->passphrase == NULL) {
1314 wpa_msg_global(wpa_s, MSG_ERROR,
1315 "P2P: Failed to copy passphrase for GO");
1316 wpa_config_remove_network(wpa_s->conf, ssid->id);
1317 return;
1318 }
1319 } else
1320 ssid->passphrase = NULL;
1321 ssid->psk_set = params->psk_set;
1322 if (ssid->psk_set)
1323 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1324 else if (ssid->passphrase)
1325 wpa_config_update_psk(ssid);
1326 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1327
1328 wpa_s->ap_configured_cb = p2p_go_configured;
1329 wpa_s->ap_configured_cb_ctx = wpa_s;
1330 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1331 wpa_s->connect_without_scan = ssid;
1332 wpa_s->reassociate = 1;
1333 wpa_s->disconnected = 0;
1334 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1335 "start GO)");
1336 wpa_supplicant_req_scan(wpa_s, 0, 0);
1337 }
1338
1339
1340 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1341 const struct wpa_supplicant *src)
1342 {
1343 struct wpa_config *d;
1344 const struct wpa_config *s;
1345
1346 d = dst->conf;
1347 s = src->conf;
1348
1349 #define C(n) if (s->n) d->n = os_strdup(s->n)
1350 C(device_name);
1351 C(manufacturer);
1352 C(model_name);
1353 C(model_number);
1354 C(serial_number);
1355 C(config_methods);
1356 #undef C
1357
1358 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1359 os_memcpy(d->sec_device_type, s->sec_device_type,
1360 sizeof(d->sec_device_type));
1361 d->num_sec_device_types = s->num_sec_device_types;
1362
1363 d->p2p_group_idle = s->p2p_group_idle;
1364 d->p2p_intra_bss = s->p2p_intra_bss;
1365 d->persistent_reconnect = s->persistent_reconnect;
1366 d->max_num_sta = s->max_num_sta;
1367 d->pbc_in_m1 = s->pbc_in_m1;
1368 d->ignore_old_scan_res = s->ignore_old_scan_res;
1369 d->beacon_int = s->beacon_int;
1370 d->dtim_period = s->dtim_period;
1371 d->disassoc_low_ack = s->disassoc_low_ack;
1372 d->disable_scan_offload = s->disable_scan_offload;
1373 }
1374
1375
1376 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1377 char *ifname, size_t len)
1378 {
1379 char *ifname_ptr = wpa_s->ifname;
1380
1381 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1382 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1383 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1384 }
1385
1386 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1387 if (os_strlen(ifname) >= IFNAMSIZ &&
1388 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1389 /* Try to avoid going over the IFNAMSIZ length limit */
1390 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1391 }
1392 }
1393
1394
1395 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1396 enum wpa_driver_if_type type)
1397 {
1398 char ifname[120], force_ifname[120];
1399
1400 if (wpa_s->pending_interface_name[0]) {
1401 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1402 "- skip creation of a new one");
1403 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1404 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1405 "unknown?! ifname='%s'",
1406 wpa_s->pending_interface_name);
1407 return -1;
1408 }
1409 return 0;
1410 }
1411
1412 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1413 force_ifname[0] = '\0';
1414
1415 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1416 ifname);
1417 wpa_s->p2p_group_idx++;
1418
1419 wpa_s->pending_interface_type = type;
1420 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1421 wpa_s->pending_interface_addr, NULL) < 0) {
1422 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1423 "interface");
1424 return -1;
1425 }
1426
1427 if (force_ifname[0]) {
1428 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1429 force_ifname);
1430 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1431 sizeof(wpa_s->pending_interface_name));
1432 } else
1433 os_strlcpy(wpa_s->pending_interface_name, ifname,
1434 sizeof(wpa_s->pending_interface_name));
1435 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1436 MACSTR, wpa_s->pending_interface_name,
1437 MAC2STR(wpa_s->pending_interface_addr));
1438
1439 return 0;
1440 }
1441
1442
1443 static void wpas_p2p_remove_pending_group_interface(
1444 struct wpa_supplicant *wpa_s)
1445 {
1446 if (!wpa_s->pending_interface_name[0] ||
1447 is_zero_ether_addr(wpa_s->pending_interface_addr))
1448 return; /* No pending virtual interface */
1449
1450 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1451 wpa_s->pending_interface_name);
1452 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1453 wpa_s->pending_interface_name);
1454 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1455 wpa_s->pending_interface_name[0] = '\0';
1456 }
1457
1458
1459 static struct wpa_supplicant *
1460 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1461 {
1462 struct wpa_interface iface;
1463 struct wpa_supplicant *group_wpa_s;
1464
1465 if (!wpa_s->pending_interface_name[0]) {
1466 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1467 if (!wpas_p2p_create_iface(wpa_s))
1468 return NULL;
1469 /*
1470 * Something has forced us to remove the pending interface; try
1471 * to create a new one and hope for the best that we will get
1472 * the same local address.
1473 */
1474 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1475 WPA_IF_P2P_CLIENT) < 0)
1476 return NULL;
1477 }
1478
1479 os_memset(&iface, 0, sizeof(iface));
1480 iface.ifname = wpa_s->pending_interface_name;
1481 iface.driver = wpa_s->driver->name;
1482 if (wpa_s->conf->ctrl_interface == NULL &&
1483 wpa_s->parent != wpa_s &&
1484 wpa_s->p2p_mgmt &&
1485 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1486 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1487 else
1488 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1489 iface.driver_param = wpa_s->conf->driver_param;
1490 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1491 if (group_wpa_s == NULL) {
1492 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1493 "wpa_supplicant interface");
1494 return NULL;
1495 }
1496 wpa_s->pending_interface_name[0] = '\0';
1497 group_wpa_s->parent = wpa_s;
1498 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1499 P2P_GROUP_INTERFACE_CLIENT;
1500 wpa_s->global->p2p_group_formation = group_wpa_s;
1501
1502 wpas_p2p_clone_config(group_wpa_s, wpa_s);
1503
1504 return group_wpa_s;
1505 }
1506
1507
1508 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1509 void *timeout_ctx)
1510 {
1511 struct wpa_supplicant *wpa_s = eloop_ctx;
1512 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1513 wpas_p2p_group_formation_failed(wpa_s);
1514 }
1515
1516
1517 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1518 {
1519 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1520 wpa_s->parent, NULL);
1521 if (wpa_s->global->p2p)
1522 p2p_group_formation_failed(wpa_s->global->p2p);
1523 wpas_group_formation_completed(wpa_s, 0);
1524 }
1525
1526
1527 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1528 {
1529 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1530 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1531 wpa_s->parent, NULL);
1532 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1533 wpa_s->parent, NULL);
1534 wpa_s->global->p2p_fail_on_wps_complete = 0;
1535 }
1536
1537
1538 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1539 {
1540 if (wpa_s->global->p2p_group_formation != wpa_s)
1541 return;
1542 /* Speed up group formation timeout since this cannot succeed */
1543 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1544 wpa_s->parent, NULL);
1545 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1546 wpa_s->parent, NULL);
1547 }
1548
1549
1550 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1551 {
1552 struct wpa_supplicant *wpa_s = ctx;
1553
1554 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1555 wpa_drv_cancel_remain_on_channel(wpa_s);
1556 wpa_s->off_channel_freq = 0;
1557 wpa_s->roc_waiting_drv_freq = 0;
1558 }
1559
1560 if (res->status) {
1561 wpa_msg_global(wpa_s, MSG_INFO,
1562 P2P_EVENT_GO_NEG_FAILURE "status=%d",
1563 res->status);
1564 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1565 wpas_p2p_remove_pending_group_interface(wpa_s);
1566 return;
1567 }
1568
1569 if (wpa_s->p2p_go_ht40)
1570 res->ht40 = 1;
1571 if (wpa_s->p2p_go_vht)
1572 res->vht = 1;
1573
1574 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1575 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1576 " wps_method=%s",
1577 res->role_go ? "GO" : "client", res->freq, res->ht40,
1578 MAC2STR(res->peer_device_addr),
1579 MAC2STR(res->peer_interface_addr),
1580 p2p_wps_method_text(res->wps_method));
1581 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1582
1583 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1584 struct wpa_ssid *ssid;
1585 ssid = wpa_config_get_network(wpa_s->conf,
1586 wpa_s->p2p_persistent_id);
1587 if (ssid && ssid->disabled == 2 &&
1588 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1589 size_t len = os_strlen(ssid->passphrase);
1590 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1591 "on requested persistent group");
1592 os_memcpy(res->passphrase, ssid->passphrase, len);
1593 res->passphrase[len] = '\0';
1594 }
1595 }
1596
1597 if (wpa_s->create_p2p_iface) {
1598 struct wpa_supplicant *group_wpa_s =
1599 wpas_p2p_init_group_interface(wpa_s, res->role_go);
1600 if (group_wpa_s == NULL) {
1601 wpas_p2p_remove_pending_group_interface(wpa_s);
1602 return;
1603 }
1604 if (group_wpa_s != wpa_s) {
1605 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1606 sizeof(group_wpa_s->p2p_pin));
1607 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1608 }
1609 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1610 wpa_s->pending_interface_name[0] = '\0';
1611 group_wpa_s->p2p_in_provisioning = 1;
1612
1613 if (res->role_go)
1614 wpas_start_wps_go(group_wpa_s, res, 1);
1615 else
1616 wpas_start_wps_enrollee(group_wpa_s, res);
1617 } else {
1618 wpa_s->p2p_in_provisioning = 1;
1619 wpa_s->global->p2p_group_formation = wpa_s;
1620
1621 if (res->role_go)
1622 wpas_start_wps_go(wpa_s, res, 1);
1623 else
1624 wpas_start_wps_enrollee(ctx, res);
1625 }
1626
1627 wpa_s->p2p_long_listen = 0;
1628 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1629
1630 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1631 eloop_register_timeout(15 + res->peer_config_timeout / 100,
1632 (res->peer_config_timeout % 100) * 10000,
1633 wpas_p2p_group_formation_timeout, wpa_s, NULL);
1634 }
1635
1636
1637 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1638 {
1639 struct wpa_supplicant *wpa_s = ctx;
1640 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1641 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1642
1643 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1644 }
1645
1646
1647 static void wpas_dev_found(void *ctx, const u8 *addr,
1648 const struct p2p_peer_info *info,
1649 int new_device)
1650 {
1651 #ifndef CONFIG_NO_STDOUT_DEBUG
1652 struct wpa_supplicant *wpa_s = ctx;
1653 char devtype[WPS_DEV_TYPE_BUFSIZE];
1654 char *wfd_dev_info_hex = NULL;
1655
1656 #ifdef CONFIG_WIFI_DISPLAY
1657 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1658 WFD_SUBELEM_DEVICE_INFO);
1659 #endif /* CONFIG_WIFI_DISPLAY */
1660
1661 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1662 " p2p_dev_addr=" MACSTR
1663 " pri_dev_type=%s name='%s' config_methods=0x%x "
1664 "dev_capab=0x%x group_capab=0x%x%s%s",
1665 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1666 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1667 sizeof(devtype)),
1668 info->device_name, info->config_methods,
1669 info->dev_capab, info->group_capab,
1670 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1671 wfd_dev_info_hex ? wfd_dev_info_hex : "");
1672 #endif /* CONFIG_NO_STDOUT_DEBUG */
1673
1674 os_free(wfd_dev_info_hex);
1675
1676 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1677 }
1678
1679
1680 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1681 {
1682 struct wpa_supplicant *wpa_s = ctx;
1683
1684 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1685 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1686
1687 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1688 }
1689
1690
1691 static void wpas_find_stopped(void *ctx)
1692 {
1693 struct wpa_supplicant *wpa_s = ctx;
1694 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1695 }
1696
1697
1698 struct wpas_p2p_listen_work {
1699 unsigned int freq;
1700 unsigned int duration;
1701 struct wpabuf *probe_resp_ie;
1702 };
1703
1704
1705 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1706 {
1707 if (lwork == NULL)
1708 return;
1709 wpabuf_free(lwork->probe_resp_ie);
1710 os_free(lwork);
1711 }
1712
1713
1714 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1715 {
1716 struct wpas_p2p_listen_work *lwork;
1717
1718 if (!wpa_s->p2p_listen_work)
1719 return;
1720
1721 lwork = wpa_s->p2p_listen_work->ctx;
1722 wpas_p2p_listen_work_free(lwork);
1723 radio_work_done(wpa_s->p2p_listen_work);
1724 wpa_s->p2p_listen_work = NULL;
1725 }
1726
1727
1728 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1729 {
1730 struct wpa_supplicant *wpa_s = work->wpa_s;
1731 struct wpas_p2p_listen_work *lwork = work->ctx;
1732
1733 if (deinit) {
1734 wpas_p2p_listen_work_free(lwork);
1735 return;
1736 }
1737
1738 wpa_s->p2p_listen_work = work;
1739
1740 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1741
1742 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1743 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1744 "report received Probe Request frames");
1745 wpas_p2p_listen_work_done(wpa_s);
1746 return;
1747 }
1748
1749 wpa_s->pending_listen_freq = lwork->freq;
1750 wpa_s->pending_listen_duration = lwork->duration;
1751
1752 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1753 {
1754 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1755 "to remain on channel (%u MHz) for Listen "
1756 "state", lwork->freq);
1757 wpas_p2p_listen_work_done(wpa_s);
1758 wpa_s->pending_listen_freq = 0;
1759 return;
1760 }
1761 wpa_s->off_channel_freq = 0;
1762 wpa_s->roc_waiting_drv_freq = lwork->freq;
1763 }
1764
1765
1766 static int wpas_start_listen(void *ctx, unsigned int freq,
1767 unsigned int duration,
1768 const struct wpabuf *probe_resp_ie)
1769 {
1770 struct wpa_supplicant *wpa_s = ctx;
1771 struct wpas_p2p_listen_work *lwork;
1772
1773 if (wpa_s->p2p_listen_work) {
1774 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1775 return -1;
1776 }
1777
1778 lwork = os_zalloc(sizeof(*lwork));
1779 if (lwork == NULL)
1780 return -1;
1781 lwork->freq = freq;
1782 lwork->duration = duration;
1783 if (probe_resp_ie) {
1784 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1785 if (lwork->probe_resp_ie == NULL) {
1786 wpas_p2p_listen_work_free(lwork);
1787 return -1;
1788 }
1789 }
1790
1791 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1792 lwork) < 0) {
1793 wpas_p2p_listen_work_free(lwork);
1794 return -1;
1795 }
1796
1797 return 0;
1798 }
1799
1800
1801 static void wpas_stop_listen(void *ctx)
1802 {
1803 struct wpa_supplicant *wpa_s = ctx;
1804 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1805 wpa_drv_cancel_remain_on_channel(wpa_s);
1806 wpa_s->off_channel_freq = 0;
1807 wpa_s->roc_waiting_drv_freq = 0;
1808 }
1809 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1810 wpa_drv_probe_req_report(wpa_s, 0);
1811 wpas_p2p_listen_work_done(wpa_s);
1812 }
1813
1814
1815 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1816 {
1817 struct wpa_supplicant *wpa_s = ctx;
1818 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1819 }
1820
1821
1822 /*
1823 * DNS Header section is used only to calculate compression pointers, so the
1824 * contents of this data does not matter, but the length needs to be reserved
1825 * in the virtual packet.
1826 */
1827 #define DNS_HEADER_LEN 12
1828
1829 /*
1830 * 27-octet in-memory packet from P2P specification containing two implied
1831 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1832 */
1833 #define P2P_SD_IN_MEMORY_LEN 27
1834
1835 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1836 u8 **spos, const u8 *end)
1837 {
1838 while (*spos < end) {
1839 u8 val = ((*spos)[0] & 0xc0) >> 6;
1840 int len;
1841
1842 if (val == 1 || val == 2) {
1843 /* These are reserved values in RFC 1035 */
1844 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1845 "sequence starting with 0x%x", val);
1846 return -1;
1847 }
1848
1849 if (val == 3) {
1850 u16 offset;
1851 u8 *spos_tmp;
1852
1853 /* Offset */
1854 if (*spos + 2 > end) {
1855 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1856 "DNS offset field");
1857 return -1;
1858 }
1859
1860 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1861 if (offset >= *spos - start) {
1862 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1863 "pointer offset %u", offset);
1864 return -1;
1865 }
1866
1867 (*spos) += 2;
1868 spos_tmp = start + offset;
1869 return p2p_sd_dns_uncompress_label(upos, uend, start,
1870 &spos_tmp,
1871 *spos - 2);
1872 }
1873
1874 /* Label */
1875 len = (*spos)[0] & 0x3f;
1876 if (len == 0)
1877 return 0;
1878
1879 (*spos)++;
1880 if (*spos + len > end) {
1881 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1882 "sequence - no room for label with length "
1883 "%u", len);
1884 return -1;
1885 }
1886
1887 if (*upos + len + 2 > uend)
1888 return -2;
1889
1890 os_memcpy(*upos, *spos, len);
1891 *spos += len;
1892 *upos += len;
1893 (*upos)[0] = '.';
1894 (*upos)++;
1895 (*upos)[0] = '\0';
1896 }
1897
1898 return 0;
1899 }
1900
1901
1902 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1903 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1904 * not large enough */
1905 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1906 size_t msg_len, size_t offset)
1907 {
1908 /* 27-octet in-memory packet from P2P specification */
1909 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1910 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1911 u8 *tmp, *end, *spos;
1912 char *upos, *uend;
1913 int ret = 0;
1914
1915 if (buf_len < 2)
1916 return -1;
1917 if (offset > msg_len)
1918 return -1;
1919
1920 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1921 if (tmp == NULL)
1922 return -1;
1923 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1924 end = spos + msg_len;
1925 spos += offset;
1926
1927 os_memset(tmp, 0, DNS_HEADER_LEN);
1928 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1929 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1930
1931 upos = buf;
1932 uend = buf + buf_len;
1933
1934 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1935 if (ret) {
1936 os_free(tmp);
1937 return ret;
1938 }
1939
1940 if (upos == buf) {
1941 upos[0] = '.';
1942 upos[1] = '\0';
1943 } else if (upos[-1] == '.')
1944 upos[-1] = '\0';
1945
1946 os_free(tmp);
1947 return 0;
1948 }
1949
1950
1951 static struct p2p_srv_bonjour *
1952 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1953 const struct wpabuf *query)
1954 {
1955 struct p2p_srv_bonjour *bsrv;
1956 size_t len;
1957
1958 len = wpabuf_len(query);
1959 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1960 struct p2p_srv_bonjour, list) {
1961 if (len == wpabuf_len(bsrv->query) &&
1962 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1963 len) == 0)
1964 return bsrv;
1965 }
1966 return NULL;
1967 }
1968
1969
1970 static struct p2p_srv_upnp *
1971 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1972 const char *service)
1973 {
1974 struct p2p_srv_upnp *usrv;
1975
1976 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1977 struct p2p_srv_upnp, list) {
1978 if (version == usrv->version &&
1979 os_strcmp(service, usrv->service) == 0)
1980 return usrv;
1981 }
1982 return NULL;
1983 }
1984
1985
1986 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1987 u8 srv_trans_id)
1988 {
1989 u8 *len_pos;
1990
1991 if (wpabuf_tailroom(resp) < 5)
1992 return;
1993
1994 /* Length (to be filled) */
1995 len_pos = wpabuf_put(resp, 2);
1996 wpabuf_put_u8(resp, srv_proto);
1997 wpabuf_put_u8(resp, srv_trans_id);
1998 /* Status Code */
1999 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2000 /* Response Data: empty */
2001 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2002 }
2003
2004
2005 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2006 struct wpabuf *resp, u8 srv_trans_id)
2007 {
2008 struct p2p_srv_bonjour *bsrv;
2009 u8 *len_pos;
2010
2011 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2012
2013 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2014 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2015 return;
2016 }
2017
2018 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2019 struct p2p_srv_bonjour, list) {
2020 if (wpabuf_tailroom(resp) <
2021 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2022 return;
2023 /* Length (to be filled) */
2024 len_pos = wpabuf_put(resp, 2);
2025 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2026 wpabuf_put_u8(resp, srv_trans_id);
2027 /* Status Code */
2028 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2029 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2030 wpabuf_head(bsrv->resp),
2031 wpabuf_len(bsrv->resp));
2032 /* Response Data */
2033 wpabuf_put_buf(resp, bsrv->query); /* Key */
2034 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2035 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2036 2);
2037 }
2038 }
2039
2040
2041 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2042 size_t query_len)
2043 {
2044 char str_rx[256], str_srv[256];
2045
2046 if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2047 return 0; /* Too short to include DNS Type and Version */
2048 if (os_memcmp(query + query_len - 3,
2049 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2050 3) != 0)
2051 return 0; /* Mismatch in DNS Type or Version */
2052 if (query_len == wpabuf_len(bsrv->query) &&
2053 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2054 return 1; /* Binary match */
2055
2056 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2057 0))
2058 return 0; /* Failed to uncompress query */
2059 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2060 wpabuf_head(bsrv->query),
2061 wpabuf_len(bsrv->query) - 3, 0))
2062 return 0; /* Failed to uncompress service */
2063
2064 return os_strcmp(str_rx, str_srv) == 0;
2065 }
2066
2067
2068 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2069 struct wpabuf *resp, u8 srv_trans_id,
2070 const u8 *query, size_t query_len)
2071 {
2072 struct p2p_srv_bonjour *bsrv;
2073 u8 *len_pos;
2074 int matches = 0;
2075
2076 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2077 query, query_len);
2078 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2079 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2080 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2081 srv_trans_id);
2082 return;
2083 }
2084
2085 if (query_len == 0) {
2086 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2087 return;
2088 }
2089
2090 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2091 struct p2p_srv_bonjour, list) {
2092 if (!match_bonjour_query(bsrv, query, query_len))
2093 continue;
2094
2095 if (wpabuf_tailroom(resp) <
2096 5 + query_len + wpabuf_len(bsrv->resp))
2097 return;
2098
2099 matches++;
2100
2101 /* Length (to be filled) */
2102 len_pos = wpabuf_put(resp, 2);
2103 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2104 wpabuf_put_u8(resp, srv_trans_id);
2105
2106 /* Status Code */
2107 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2108 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2109 wpabuf_head(bsrv->resp),
2110 wpabuf_len(bsrv->resp));
2111
2112 /* Response Data */
2113 wpabuf_put_data(resp, query, query_len); /* Key */
2114 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2115
2116 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2117 }
2118
2119 if (matches == 0) {
2120 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2121 "available");
2122 if (wpabuf_tailroom(resp) < 5)
2123 return;
2124
2125 /* Length (to be filled) */
2126 len_pos = wpabuf_put(resp, 2);
2127 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2128 wpabuf_put_u8(resp, srv_trans_id);
2129
2130 /* Status Code */
2131 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2132 /* Response Data: empty */
2133 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2134 2);
2135 }
2136 }
2137
2138
2139 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2140 struct wpabuf *resp, u8 srv_trans_id)
2141 {
2142 struct p2p_srv_upnp *usrv;
2143 u8 *len_pos;
2144
2145 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2146
2147 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2148 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2149 return;
2150 }
2151
2152 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2153 struct p2p_srv_upnp, list) {
2154 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2155 return;
2156
2157 /* Length (to be filled) */
2158 len_pos = wpabuf_put(resp, 2);
2159 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2160 wpabuf_put_u8(resp, srv_trans_id);
2161
2162 /* Status Code */
2163 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2164 /* Response Data */
2165 wpabuf_put_u8(resp, usrv->version);
2166 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2167 usrv->service);
2168 wpabuf_put_str(resp, usrv->service);
2169 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2170 2);
2171 }
2172 }
2173
2174
2175 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2176 struct wpabuf *resp, u8 srv_trans_id,
2177 const u8 *query, size_t query_len)
2178 {
2179 struct p2p_srv_upnp *usrv;
2180 u8 *len_pos;
2181 u8 version;
2182 char *str;
2183 int count = 0;
2184
2185 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2186 query, query_len);
2187
2188 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2189 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2190 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2191 srv_trans_id);
2192 return;
2193 }
2194
2195 if (query_len == 0) {
2196 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2197 return;
2198 }
2199
2200 if (wpabuf_tailroom(resp) < 5)
2201 return;
2202
2203 /* Length (to be filled) */
2204 len_pos = wpabuf_put(resp, 2);
2205 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2206 wpabuf_put_u8(resp, srv_trans_id);
2207
2208 version = query[0];
2209 str = os_malloc(query_len);
2210 if (str == NULL)
2211 return;
2212 os_memcpy(str, query + 1, query_len - 1);
2213 str[query_len - 1] = '\0';
2214
2215 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2216 struct p2p_srv_upnp, list) {
2217 if (version != usrv->version)
2218 continue;
2219
2220 if (os_strcmp(str, "ssdp:all") != 0 &&
2221 os_strstr(usrv->service, str) == NULL)
2222 continue;
2223
2224 if (wpabuf_tailroom(resp) < 2)
2225 break;
2226 if (count == 0) {
2227 /* Status Code */
2228 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2229 /* Response Data */
2230 wpabuf_put_u8(resp, version);
2231 } else
2232 wpabuf_put_u8(resp, ',');
2233
2234 count++;
2235
2236 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2237 usrv->service);
2238 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2239 break;
2240 wpabuf_put_str(resp, usrv->service);
2241 }
2242 os_free(str);
2243
2244 if (count == 0) {
2245 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2246 "available");
2247 /* Status Code */
2248 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2249 /* Response Data: empty */
2250 }
2251
2252 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2253 }
2254
2255
2256 #ifdef CONFIG_WIFI_DISPLAY
2257 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2258 struct wpabuf *resp, u8 srv_trans_id,
2259 const u8 *query, size_t query_len)
2260 {
2261 const u8 *pos;
2262 u8 role;
2263 u8 *len_pos;
2264
2265 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2266
2267 if (!wpa_s->global->wifi_display) {
2268 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2269 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2270 srv_trans_id);
2271 return;
2272 }
2273
2274 if (query_len < 1) {
2275 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2276 "Role");
2277 return;
2278 }
2279
2280 if (wpabuf_tailroom(resp) < 5)
2281 return;
2282
2283 pos = query;
2284 role = *pos++;
2285 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2286
2287 /* TODO: role specific handling */
2288
2289 /* Length (to be filled) */
2290 len_pos = wpabuf_put(resp, 2);
2291 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2292 wpabuf_put_u8(resp, srv_trans_id);
2293 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2294
2295 while (pos < query + query_len) {
2296 if (*pos < MAX_WFD_SUBELEMS &&
2297 wpa_s->global->wfd_subelem[*pos] &&
2298 wpabuf_tailroom(resp) >=
2299 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2300 wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2301 "subelement %u", *pos);
2302 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2303 }
2304 pos++;
2305 }
2306
2307 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2308 }
2309 #endif /* CONFIG_WIFI_DISPLAY */
2310
2311
2312 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2313 u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2314 {
2315 struct wpa_supplicant *wpa_s = ctx;
2316 const u8 *pos = tlvs;
2317 const u8 *end = tlvs + tlvs_len;
2318 const u8 *tlv_end;
2319 u16 slen;
2320 struct wpabuf *resp;
2321 u8 srv_proto, srv_trans_id;
2322 size_t buf_len;
2323 char *buf;
2324
2325 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2326 tlvs, tlvs_len);
2327 buf_len = 2 * tlvs_len + 1;
2328 buf = os_malloc(buf_len);
2329 if (buf) {
2330 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2331 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2332 MACSTR " %u %u %s",
2333 freq, MAC2STR(sa), dialog_token, update_indic,
2334 buf);
2335 os_free(buf);
2336 }
2337
2338 if (wpa_s->p2p_sd_over_ctrl_iface) {
2339 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2340 update_indic, tlvs, tlvs_len);
2341 return; /* to be processed by an external program */
2342 }
2343
2344 resp = wpabuf_alloc(10000);
2345 if (resp == NULL)
2346 return;
2347
2348 while (pos + 1 < end) {
2349 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2350 slen = WPA_GET_LE16(pos);
2351 pos += 2;
2352 if (pos + slen > end || slen < 2) {
2353 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2354 "length");
2355 wpabuf_free(resp);
2356 return;
2357 }
2358 tlv_end = pos + slen;
2359
2360 srv_proto = *pos++;
2361 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2362 srv_proto);
2363 srv_trans_id = *pos++;
2364 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2365 srv_trans_id);
2366
2367 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2368 pos, tlv_end - pos);
2369
2370
2371 if (wpa_s->force_long_sd) {
2372 wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2373 "response");
2374 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2375 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2376 goto done;
2377 }
2378
2379 switch (srv_proto) {
2380 case P2P_SERV_ALL_SERVICES:
2381 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2382 "for all services");
2383 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2384 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2385 wpa_printf(MSG_DEBUG, "P2P: No service "
2386 "discovery protocols available");
2387 wpas_sd_add_proto_not_avail(
2388 resp, P2P_SERV_ALL_SERVICES,
2389 srv_trans_id);
2390 break;
2391 }
2392 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2393 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2394 break;
2395 case P2P_SERV_BONJOUR:
2396 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2397 pos, tlv_end - pos);
2398 break;
2399 case P2P_SERV_UPNP:
2400 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2401 pos, tlv_end - pos);
2402 break;
2403 #ifdef CONFIG_WIFI_DISPLAY
2404 case P2P_SERV_WIFI_DISPLAY:
2405 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2406 pos, tlv_end - pos);
2407 break;
2408 #endif /* CONFIG_WIFI_DISPLAY */
2409 default:
2410 wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2411 "protocol %u", srv_proto);
2412 wpas_sd_add_proto_not_avail(resp, srv_proto,
2413 srv_trans_id);
2414 break;
2415 }
2416
2417 pos = tlv_end;
2418 }
2419
2420 done:
2421 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2422 update_indic, tlvs, tlvs_len);
2423
2424 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2425
2426 wpabuf_free(resp);
2427 }
2428
2429
2430 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2431 const u8 *tlvs, size_t tlvs_len)
2432 {
2433 struct wpa_supplicant *wpa_s = ctx;
2434 const u8 *pos = tlvs;
2435 const u8 *end = tlvs + tlvs_len;
2436 const u8 *tlv_end;
2437 u16 slen;
2438 size_t buf_len;
2439 char *buf;
2440
2441 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2442 tlvs, tlvs_len);
2443 if (tlvs_len > 1500) {
2444 /* TODO: better way for handling this */
2445 wpa_msg_ctrl(wpa_s, MSG_INFO,
2446 P2P_EVENT_SERV_DISC_RESP MACSTR
2447 " %u <long response: %u bytes>",
2448 MAC2STR(sa), update_indic,
2449 (unsigned int) tlvs_len);
2450 } else {
2451 buf_len = 2 * tlvs_len + 1;
2452 buf = os_malloc(buf_len);
2453 if (buf) {
2454 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2455 wpa_msg_ctrl(wpa_s, MSG_INFO,
2456 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2457 MAC2STR(sa), update_indic, buf);
2458 os_free(buf);
2459 }
2460 }
2461
2462 while (pos < end) {
2463 u8 srv_proto, srv_trans_id, status;
2464
2465 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2466 slen = WPA_GET_LE16(pos);
2467 pos += 2;
2468 if (pos + slen > end || slen < 3) {
2469 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2470 "length");
2471 return;
2472 }
2473 tlv_end = pos + slen;
2474
2475 srv_proto = *pos++;
2476 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2477 srv_proto);
2478 srv_trans_id = *pos++;
2479 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2480 srv_trans_id);
2481 status = *pos++;
2482 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2483 status);
2484
2485 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2486 pos, tlv_end - pos);
2487
2488 pos = tlv_end;
2489 }
2490
2491 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2492 }
2493
2494
2495 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2496 const struct wpabuf *tlvs)
2497 {
2498 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2499 return 0;
2500 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2501 }
2502
2503
2504 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2505 u8 version, const char *query)
2506 {
2507 struct wpabuf *tlvs;
2508 u64 ret;
2509
2510 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2511 if (tlvs == NULL)
2512 return 0;
2513 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2514 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2515 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2516 wpabuf_put_u8(tlvs, version);
2517 wpabuf_put_str(tlvs, query);
2518 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2519 wpabuf_free(tlvs);
2520 return ret;
2521 }
2522
2523
2524 #ifdef CONFIG_WIFI_DISPLAY
2525
2526 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2527 const struct wpabuf *tlvs)
2528 {
2529 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2530 return 0;
2531 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2532 }
2533
2534
2535 #define MAX_WFD_SD_SUBELEMS 20
2536
2537 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2538 const char *subelems)
2539 {
2540 u8 *len;
2541 const char *pos;
2542 int val;
2543 int count = 0;
2544
2545 len = wpabuf_put(tlvs, 2);
2546 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2547 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2548
2549 wpabuf_put_u8(tlvs, role);
2550
2551 pos = subelems;
2552 while (*pos) {
2553 val = atoi(pos);
2554 if (val >= 0 && val < 256) {
2555 wpabuf_put_u8(tlvs, val);
2556 count++;
2557 if (count == MAX_WFD_SD_SUBELEMS)
2558 break;
2559 }
2560 pos = os_strchr(pos + 1, ',');
2561 if (pos == NULL)
2562 break;
2563 pos++;
2564 }
2565
2566 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2567 }
2568
2569
2570 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2571 const u8 *dst, const char *role)
2572 {
2573 struct wpabuf *tlvs;
2574 u64 ret;
2575 const char *subelems;
2576 u8 id = 1;
2577
2578 subelems = os_strchr(role, ' ');
2579 if (subelems == NULL)
2580 return 0;
2581 subelems++;
2582
2583 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2584 if (tlvs == NULL)
2585 return 0;
2586
2587 if (os_strstr(role, "[source]"))
2588 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2589 if (os_strstr(role, "[pri-sink]"))
2590 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2591 if (os_strstr(role, "[sec-sink]"))
2592 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2593 if (os_strstr(role, "[source+sink]"))
2594 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2595
2596 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2597 wpabuf_free(tlvs);
2598 return ret;
2599 }
2600
2601 #endif /* CONFIG_WIFI_DISPLAY */
2602
2603
2604 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2605 {
2606 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2607 return -1;
2608 return p2p_sd_cancel_request(wpa_s->global->p2p,
2609 (void *) (uintptr_t) req);
2610 }
2611
2612
2613 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2614 const u8 *dst, u8 dialog_token,
2615 const struct wpabuf *resp_tlvs)
2616 {
2617 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2618 return;
2619 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2620 resp_tlvs);
2621 }
2622
2623
2624 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2625 {
2626 if (wpa_s->global->p2p)
2627 p2p_sd_service_update(wpa_s->global->p2p);
2628 }
2629
2630
2631 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2632 {
2633 dl_list_del(&bsrv->list);
2634 wpabuf_free(bsrv->query);
2635 wpabuf_free(bsrv->resp);
2636 os_free(bsrv);
2637 }
2638
2639
2640 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2641 {
2642 dl_list_del(&usrv->list);
2643 os_free(usrv->service);
2644 os_free(usrv);
2645 }
2646
2647
2648 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2649 {
2650 struct p2p_srv_bonjour *bsrv, *bn;
2651 struct p2p_srv_upnp *usrv, *un;
2652
2653 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2654 struct p2p_srv_bonjour, list)
2655 wpas_p2p_srv_bonjour_free(bsrv);
2656
2657 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2658 struct p2p_srv_upnp, list)
2659 wpas_p2p_srv_upnp_free(usrv);
2660
2661 wpas_p2p_sd_service_update(wpa_s);
2662 }
2663
2664
2665 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2666 struct wpabuf *query, struct wpabuf *resp)
2667 {
2668 struct p2p_srv_bonjour *bsrv;
2669
2670 bsrv = os_zalloc(sizeof(*bsrv));
2671 if (bsrv == NULL)
2672 return -1;
2673 bsrv->query = query;
2674 bsrv->resp = resp;
2675 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2676
2677 wpas_p2p_sd_service_update(wpa_s);
2678 return 0;
2679 }
2680
2681
2682 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2683 const struct wpabuf *query)
2684 {
2685 struct p2p_srv_bonjour *bsrv;
2686
2687 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2688 if (bsrv == NULL)
2689 return -1;
2690 wpas_p2p_srv_bonjour_free(bsrv);
2691 wpas_p2p_sd_service_update(wpa_s);
2692 return 0;
2693 }
2694
2695
2696 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2697 const char *service)
2698 {
2699 struct p2p_srv_upnp *usrv;
2700
2701 if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2702 return 0; /* Already listed */
2703 usrv = os_zalloc(sizeof(*usrv));
2704 if (usrv == NULL)
2705 return -1;
2706 usrv->version = version;
2707 usrv->service = os_strdup(service);
2708 if (usrv->service == NULL) {
2709 os_free(usrv);
2710 return -1;
2711 }
2712 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2713
2714 wpas_p2p_sd_service_update(wpa_s);
2715 return 0;
2716 }
2717
2718
2719 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2720 const char *service)
2721 {
2722 struct p2p_srv_upnp *usrv;
2723
2724 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2725 if (usrv == NULL)
2726 return -1;
2727 wpas_p2p_srv_upnp_free(usrv);
2728 wpas_p2p_sd_service_update(wpa_s);
2729 return 0;
2730 }
2731
2732
2733 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2734 const u8 *peer, const char *params,
2735 unsigned int generated_pin)
2736 {
2737 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2738 " %08d%s", MAC2STR(peer), generated_pin, params);
2739 }
2740
2741
2742 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2743 const u8 *peer, const char *params)
2744 {
2745 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2746 "%s", MAC2STR(peer), params);
2747 }
2748
2749
2750 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2751 const u8 *dev_addr, const u8 *pri_dev_type,
2752 const char *dev_name, u16 supp_config_methods,
2753 u8 dev_capab, u8 group_capab, const u8 *group_id,
2754 size_t group_id_len)
2755 {
2756 struct wpa_supplicant *wpa_s = ctx;
2757 char devtype[WPS_DEV_TYPE_BUFSIZE];
2758 char params[300];
2759 u8 empty_dev_type[8];
2760 unsigned int generated_pin = 0;
2761 struct wpa_supplicant *group = NULL;
2762
2763 if (group_id) {
2764 for (group = wpa_s->global->ifaces; group; group = group->next)
2765 {
2766 struct wpa_ssid *s = group->current_ssid;
2767 if (s != NULL &&
2768 s->mode == WPAS_MODE_P2P_GO &&
2769 group_id_len - ETH_ALEN == s->ssid_len &&
2770 os_memcmp(group_id + ETH_ALEN, s->ssid,
2771 s->ssid_len) == 0)
2772 break;
2773 }
2774 }
2775
2776 if (pri_dev_type == NULL) {
2777 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2778 pri_dev_type = empty_dev_type;
2779 }
2780 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2781 " pri_dev_type=%s name='%s' config_methods=0x%x "
2782 "dev_capab=0x%x group_capab=0x%x%s%s",
2783 MAC2STR(dev_addr),
2784 wps_dev_type_bin2str(pri_dev_type, devtype,
2785 sizeof(devtype)),
2786 dev_name, supp_config_methods, dev_capab, group_capab,
2787 group ? " group=" : "",
2788 group ? group->ifname : "");
2789 params[sizeof(params) - 1] = '\0';
2790
2791 if (config_methods & WPS_CONFIG_DISPLAY) {
2792 generated_pin = wps_generate_pin();
2793 wpas_prov_disc_local_display(wpa_s, peer, params,
2794 generated_pin);
2795 } else if (config_methods & WPS_CONFIG_KEYPAD)
2796 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2797 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2798 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2799 MACSTR "%s", MAC2STR(peer), params);
2800
2801 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2802 P2P_PROV_DISC_SUCCESS,
2803 config_methods, generated_pin);
2804 }
2805
2806
2807 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2808 {
2809 struct wpa_supplicant *wpa_s = ctx;
2810 unsigned int generated_pin = 0;
2811 char params[20];
2812
2813 if (wpa_s->pending_pd_before_join &&
2814 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2815 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2816 wpa_s->pending_pd_before_join = 0;
2817 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2818 "join-existing-group operation");
2819 wpas_p2p_join_start(wpa_s);
2820 return;
2821 }
2822
2823 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2824 wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2825 os_snprintf(params, sizeof(params), " peer_go=%d",
2826 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2827 else
2828 params[0] = '\0';
2829
2830 if (config_methods & WPS_CONFIG_DISPLAY)
2831 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2832 else if (config_methods & WPS_CONFIG_KEYPAD) {
2833 generated_pin = wps_generate_pin();
2834 wpas_prov_disc_local_display(wpa_s, peer, params,
2835 generated_pin);
2836 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2837 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2838 MACSTR "%s", MAC2STR(peer), params);
2839
2840 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2841 P2P_PROV_DISC_SUCCESS,
2842 config_methods, generated_pin);
2843 }
2844
2845
2846 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2847 enum p2p_prov_disc_status status)
2848 {
2849 struct wpa_supplicant *wpa_s = ctx;
2850
2851 if (wpa_s->p2p_fallback_to_go_neg) {
2852 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2853 "failed - fall back to GO Negotiation");
2854 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2855 return;
2856 }
2857
2858 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2859 wpa_s->pending_pd_before_join = 0;
2860 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2861 "join-existing-group operation (no ACK for PD "
2862 "Req attempts)");
2863 wpas_p2p_join_start(wpa_s);
2864 return;
2865 }
2866
2867 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2868 " p2p_dev_addr=" MACSTR " status=%d",
2869 MAC2STR(peer), status);
2870
2871 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2872 status, 0, 0);
2873 }
2874
2875
2876 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2877 {
2878 if (channels == NULL)
2879 return 1; /* Assume no restrictions */
2880 return p2p_channels_includes_freq(channels, freq);
2881
2882 }
2883
2884
2885 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2886 const u8 *go_dev_addr, const u8 *ssid,
2887 size_t ssid_len, int *go, u8 *group_bssid,
2888 int *force_freq, int persistent_group,
2889 const struct p2p_channels *channels)
2890 {
2891 struct wpa_supplicant *wpa_s = ctx;
2892 struct wpa_ssid *s;
2893 int res;
2894 struct wpa_supplicant *grp;
2895
2896 if (!persistent_group) {
2897 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2898 " to join an active group (SSID: %s)",
2899 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2900 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2901 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2902 == 0 ||
2903 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2904 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2905 "authorized invitation");
2906 goto accept_inv;
2907 }
2908 /*
2909 * Do not accept the invitation automatically; notify user and
2910 * request approval.
2911 */
2912 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2913 }
2914
2915 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2916 if (grp) {
2917 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2918 "running persistent group");
2919 if (*go)
2920 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2921 goto accept_inv;
2922 }
2923
2924 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2925 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2926 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2927 "invitation to re-invoke a persistent group");
2928 } else if (!wpa_s->conf->persistent_reconnect)
2929 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2930
2931 for (s = wpa_s->conf->ssid; s; s = s->next) {
2932 if (s->disabled == 2 &&
2933 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2934 s->ssid_len == ssid_len &&
2935 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2936 break;
2937 }
2938
2939 if (!s) {
2940 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2941 " requested reinvocation of an unknown group",
2942 MAC2STR(sa));
2943 return P2P_SC_FAIL_UNKNOWN_GROUP;
2944 }
2945
2946 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2947 *go = 1;
2948 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2949 wpa_printf(MSG_DEBUG, "P2P: The only available "
2950 "interface is already in use - reject "
2951 "invitation");
2952 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2953 }
2954 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2955 } else if (s->mode == WPAS_MODE_P2P_GO) {
2956 *go = 1;
2957 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2958 {
2959 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2960 "interface address for the group");
2961 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2962 }
2963 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2964 ETH_ALEN);
2965 }
2966
2967 accept_inv:
2968 wpas_p2p_set_own_freq_preference(wpa_s, 0);
2969
2970 /* Get one of the frequencies currently in use */
2971 if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
2972 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2973 wpas_p2p_set_own_freq_preference(wpa_s, res);
2974
2975 if (wpa_s->num_multichan_concurrent < 2 ||
2976 wpas_p2p_num_unused_channels(wpa_s) < 1) {
2977 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2978 *force_freq = res;
2979 }
2980 }
2981
2982 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2983 wpas_p2p_num_unused_channels(wpa_s) > 0) {
2984 if (*go == 0) {
2985 /* We are the client */
2986 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2987 "running a GO but we are capable of MCC, "
2988 "figure out the best channel to use");
2989 *force_freq = 0;
2990 } else if (!freq_included(channels, *force_freq)) {
2991 /* We are the GO, and *force_freq is not in the
2992 * intersection */
2993 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2994 "in intersection but we are capable of MCC, "
2995 "figure out the best channel to use",
2996 *force_freq);
2997 *force_freq = 0;
2998 }
2999 }
3000
3001 return P2P_SC_SUCCESS;
3002 }
3003
3004
3005 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3006 const u8 *ssid, size_t ssid_len,
3007 const u8 *go_dev_addr, u8 status,
3008 int op_freq)
3009 {
3010 struct wpa_supplicant *wpa_s = ctx;
3011 struct wpa_ssid *s;
3012
3013 for (s = wpa_s->conf->ssid; s; s = s->next) {
3014 if (s->disabled == 2 &&
3015 s->ssid_len == ssid_len &&
3016 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3017 break;
3018 }
3019
3020 if (status == P2P_SC_SUCCESS) {
3021 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3022 " was accepted; op_freq=%d MHz, SSID=%s",
3023 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3024 if (s) {
3025 int go = s->mode == WPAS_MODE_P2P_GO;
3026 wpas_p2p_group_add_persistent(
3027 wpa_s, s, go, go ? op_freq : 0, 0, 0, NULL,
3028 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3029 } else if (bssid) {
3030 wpa_s->user_initiated_pd = 0;
3031 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3032 wpa_s->p2p_wps_method, 0,
3033 ssid, ssid_len);
3034 }
3035 return;
3036 }
3037
3038 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3039 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3040 " was rejected (status %u)", MAC2STR(sa), status);
3041 return;
3042 }
3043
3044 if (!s) {
3045 if (bssid) {
3046 wpa_msg_global(wpa_s, MSG_INFO,
3047 P2P_EVENT_INVITATION_RECEIVED
3048 "sa=" MACSTR " go_dev_addr=" MACSTR
3049 " bssid=" MACSTR " unknown-network",
3050 MAC2STR(sa), MAC2STR(go_dev_addr),
3051 MAC2STR(bssid));
3052 } else {
3053 wpa_msg_global(wpa_s, MSG_INFO,
3054 P2P_EVENT_INVITATION_RECEIVED
3055 "sa=" MACSTR " go_dev_addr=" MACSTR
3056 " unknown-network",
3057 MAC2STR(sa), MAC2STR(go_dev_addr));
3058 }
3059 return;
3060 }
3061
3062 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3063 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3064 "sa=" MACSTR " persistent=%d freq=%d",
3065 MAC2STR(sa), s->id, op_freq);
3066 } else {
3067 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3068 "sa=" MACSTR " persistent=%d",
3069 MAC2STR(sa), s->id);
3070 }
3071 }
3072
3073
3074 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3075 struct wpa_ssid *ssid,
3076 const u8 *peer, int inv)
3077 {
3078 size_t i;
3079
3080 if (ssid == NULL)
3081 return;
3082
3083 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3084 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3085 ETH_ALEN) == 0)
3086 break;
3087 }
3088 if (i >= ssid->num_p2p_clients) {
3089 if (ssid->mode != WPAS_MODE_P2P_GO &&
3090 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3091 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3092 "due to invitation result", ssid->id);
3093 wpas_notify_network_removed(wpa_s, ssid);
3094 wpa_config_remove_network(wpa_s->conf, ssid->id);
3095 return;
3096 }
3097 return; /* Peer not found in client list */
3098 }
3099
3100 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3101 "group %d client list%s",
3102 MAC2STR(peer), ssid->id,
3103 inv ? " due to invitation result" : "");
3104 os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3105 ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3106 (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3107 ssid->num_p2p_clients--;
3108 #ifndef CONFIG_NO_CONFIG_WRITE
3109 if (wpa_s->parent->conf->update_config &&
3110 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3111 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3112 #endif /* CONFIG_NO_CONFIG_WRITE */
3113 }
3114
3115
3116 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3117 const u8 *peer)
3118 {
3119 struct wpa_ssid *ssid;
3120
3121 wpa_s = wpa_s->global->p2p_invite_group;
3122 if (wpa_s == NULL)
3123 return; /* No known invitation group */
3124 ssid = wpa_s->current_ssid;
3125 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3126 !ssid->p2p_persistent_group)
3127 return; /* Not operating as a GO in persistent group */
3128 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3129 ssid->ssid, ssid->ssid_len);
3130 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3131 }
3132
3133
3134 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3135 const struct p2p_channels *channels,
3136 const u8 *peer, int neg_freq)
3137 {
3138 struct wpa_supplicant *wpa_s = ctx;
3139 struct wpa_ssid *ssid;
3140 int freq;
3141
3142 if (bssid) {
3143 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3144 "status=%d " MACSTR,
3145 status, MAC2STR(bssid));
3146 } else {
3147 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3148 "status=%d ", status);
3149 }
3150 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3151
3152 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3153 status, MAC2STR(peer));
3154 if (wpa_s->pending_invite_ssid_id == -1) {
3155 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3156 wpas_remove_persistent_client(wpa_s, peer);
3157 return; /* Invitation to active group */
3158 }
3159
3160 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3161 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3162 "invitation exchange to indicate readiness for "
3163 "re-invocation");
3164 }
3165
3166 if (status != P2P_SC_SUCCESS) {
3167 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3168 ssid = wpa_config_get_network(
3169 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3170 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3171 }
3172 wpas_p2p_remove_pending_group_interface(wpa_s);
3173 return;
3174 }
3175
3176 ssid = wpa_config_get_network(wpa_s->conf,
3177 wpa_s->pending_invite_ssid_id);
3178 if (ssid == NULL) {
3179 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3180 "data matching with invitation");
3181 return;
3182 }
3183
3184 /*
3185 * The peer could have missed our ctrl::ack frame for Invitation
3186 * Response and continue retransmitting the frame. To reduce the
3187 * likelihood of the peer not getting successful TX status for the
3188 * Invitation Response frame, wait a short time here before starting
3189 * the persistent group so that we will remain on the current channel to
3190 * acknowledge any possible retransmission from the peer.
3191 */
3192 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3193 "starting persistent group");
3194 os_sleep(0, 50000);
3195
3196 freq = wpa_s->p2p_persistent_go_freq;
3197 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3198 freq_included(channels, neg_freq)) {
3199 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use frequence %d MHz from invitation for GO mode",
3200 neg_freq);
3201 freq = neg_freq;
3202 }
3203
3204 wpas_p2p_group_add_persistent(wpa_s, ssid,
3205 ssid->mode == WPAS_MODE_P2P_GO,
3206 freq,
3207 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3208 channels,
3209 ssid->mode == WPAS_MODE_P2P_GO ?
3210 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3211 0);
3212 }
3213
3214
3215 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3216 unsigned int freq)
3217 {
3218 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3219 return 1;
3220 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3221 }
3222
3223
3224 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3225 {
3226 reg->channel[reg->channels] = chan;
3227 reg->channels++;
3228 }
3229
3230
3231 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3232 struct p2p_channels *chan,
3233 struct p2p_channels *cli_chan)
3234 {
3235 int i, cla = 0;
3236
3237 os_memset(cli_chan, 0, sizeof(*cli_chan));
3238
3239 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3240 "band");
3241
3242 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3243 chan->reg_class[cla].reg_class = 81;
3244 chan->reg_class[cla].channels = 0;
3245 for (i = 0; i < 11; i++) {
3246 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3247 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3248 }
3249 if (chan->reg_class[cla].channels)
3250 cla++;
3251
3252 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3253 "band");
3254
3255 /* Operating class 115 - 5 GHz, channels 36-48 */
3256 chan->reg_class[cla].reg_class = 115;
3257 chan->reg_class[cla].channels = 0;
3258 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3259 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3260 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3261 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3262 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3263 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3264 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3265 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3266 if (chan->reg_class[cla].channels)
3267 cla++;
3268
3269 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3270 "band");
3271
3272 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3273 chan->reg_class[cla].reg_class = 124;
3274 chan->reg_class[cla].channels = 0;
3275 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3276 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3277 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3278 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3279 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3280 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3281 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3282 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3283 if (chan->reg_class[cla].channels)
3284 cla++;
3285
3286 chan->reg_classes = cla;
3287 return 0;
3288 }
3289
3290
3291 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3292 u16 num_modes,
3293 enum hostapd_hw_mode mode)
3294 {
3295 u16 i;
3296
3297 for (i = 0; i < num_modes; i++) {
3298 if (modes[i].mode == mode)
3299 return &modes[i];
3300 }
3301
3302 return NULL;
3303 }
3304
3305
3306 enum chan_allowed {
3307 NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3308 };
3309
3310 static int has_channel(struct wpa_global *global,
3311 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3312 {
3313 int i;
3314 unsigned int freq;
3315
3316 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3317 chan * 5;
3318 if (wpas_p2p_disallowed_freq(global, freq))
3319 return NOT_ALLOWED;
3320
3321 for (i = 0; i < mode->num_channels; i++) {
3322 if (mode->channels[i].chan == chan) {
3323 if (flags)
3324 *flags = mode->channels[i].flag;
3325 if (mode->channels[i].flag &
3326 (HOSTAPD_CHAN_DISABLED |
3327 HOSTAPD_CHAN_RADAR))
3328 return NOT_ALLOWED;
3329 if (mode->channels[i].flag &
3330 (HOSTAPD_CHAN_PASSIVE_SCAN |
3331 HOSTAPD_CHAN_NO_IBSS))
3332 return PASSIVE_ONLY;
3333 return ALLOWED;
3334 }
3335 }
3336
3337 return NOT_ALLOWED;
3338 }
3339
3340
3341 struct p2p_oper_class_map {
3342 enum hostapd_hw_mode mode;
3343 u8 op_class;
3344 u8 min_chan;
3345 u8 max_chan;
3346 u8 inc;
3347 enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3348 };
3349
3350 static struct p2p_oper_class_map op_class[] = {
3351 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3352 #if 0 /* Do not enable HT40 on 2 GHz for now */
3353 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3354 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3355 #endif
3356 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3357 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3358 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3359 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3360 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3361 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3362
3363 /*
3364 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3365 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3366 * 80 MHz, but currently use the following definition for simplicity
3367 * (these center frequencies are not actual channels, which makes
3368 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3369 * removing invalid channels.
3370 */
3371 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3372 { -1, 0, 0, 0, 0, BW20 }
3373 };
3374
3375
3376 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3377 struct hostapd_hw_modes *mode,
3378 u8 channel)
3379 {
3380 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3381 unsigned int i;
3382
3383 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3384 return 0;
3385
3386 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3387 /*
3388 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3389 * so the center channel is 6 channels away from the start/end.
3390 */
3391 if (channel >= center_channels[i] - 6 &&
3392 channel <= center_channels[i] + 6)
3393 return center_channels[i];
3394
3395 return 0;
3396 }
3397
3398
3399 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3400 struct hostapd_hw_modes *mode,
3401 u8 channel, u8 bw)
3402 {
3403 u8 center_chan;
3404 int i, flags;
3405 enum chan_allowed res, ret = ALLOWED;
3406
3407 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3408 if (!center_chan)
3409 return NOT_ALLOWED;
3410 if (center_chan >= 58 && center_chan <= 138)
3411 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3412
3413 /* check all the channels are available */
3414 for (i = 0; i < 4; i++) {
3415 int adj_chan = center_chan - 6 + i * 4;
3416
3417 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3418 if (res == NOT_ALLOWED)
3419 return NOT_ALLOWED;
3420 if (res == PASSIVE_ONLY)
3421 ret = PASSIVE_ONLY;
3422
3423 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3424 return NOT_ALLOWED;
3425 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3426 return NOT_ALLOWED;
3427 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3428 return NOT_ALLOWED;
3429 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3430 return NOT_ALLOWED;
3431 }
3432
3433 return ret;
3434 }
3435
3436
3437 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3438 struct hostapd_hw_modes *mode,
3439 u8 channel, u8 bw)
3440 {
3441 int flag;
3442 enum chan_allowed res, res2;
3443
3444 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3445 if (bw == BW40MINUS) {
3446 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3447 return NOT_ALLOWED;
3448 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3449 } else if (bw == BW40PLUS) {
3450 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3451 return NOT_ALLOWED;
3452 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3453 } else if (bw == BW80) {
3454 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3455 }
3456
3457 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3458 return NOT_ALLOWED;
3459 if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3460 return PASSIVE_ONLY;
3461 return res;
3462 }
3463
3464
3465 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3466 struct p2p_channels *chan,
3467 struct p2p_channels *cli_chan)
3468 {
3469 struct hostapd_hw_modes *mode;
3470 int cla, op, cli_cla;
3471
3472 if (wpa_s->hw.modes == NULL) {
3473 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3474 "of all supported channels; assume dualband "
3475 "support");
3476 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3477 }
3478
3479 cla = cli_cla = 0;
3480
3481 for (op = 0; op_class[op].op_class; op++) {
3482 struct p2p_oper_class_map *o = &op_class[op];
3483 u8 ch;
3484 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3485
3486 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3487 if (mode == NULL)
3488 continue;
3489 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3490 enum chan_allowed res;
3491 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3492 if (res == ALLOWED) {
3493 if (reg == NULL) {
3494 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3495 o->op_class);
3496 reg = &chan->reg_class[cla];
3497 cla++;
3498 reg->reg_class = o->op_class;
3499 }
3500 reg->channel[reg->channels] = ch;
3501 reg->channels++;
3502 } else if (res == PASSIVE_ONLY &&
3503 wpa_s->conf->p2p_add_cli_chan) {
3504 if (cli_reg == NULL) {
3505 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3506 o->op_class);
3507 cli_reg = &cli_chan->reg_class[cli_cla];
3508 cli_cla++;
3509 cli_reg->reg_class = o->op_class;
3510 }
3511 cli_reg->channel[cli_reg->channels] = ch;
3512 cli_reg->channels++;
3513 }
3514 }
3515 if (reg) {
3516 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3517 reg->channel, reg->channels);
3518 }
3519 if (cli_reg) {
3520 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3521 cli_reg->channel, cli_reg->channels);
3522 }
3523 }
3524
3525 chan->reg_classes = cla;
3526 cli_chan->reg_classes = cli_cla;
3527
3528 return 0;
3529 }
3530
3531
3532 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3533 struct hostapd_hw_modes *mode, u8 channel)
3534 {
3535 int op;
3536 enum chan_allowed ret;
3537
3538 for (op = 0; op_class[op].op_class; op++) {
3539 struct p2p_oper_class_map *o = &op_class[op];
3540 u8 ch;
3541
3542 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3543 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3544 o->bw == BW20 || ch != channel)
3545 continue;
3546 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3547 if (ret == ALLOWED)
3548 return (o->bw == BW40MINUS) ? -1 : 1;
3549 }
3550 }
3551 return 0;
3552 }
3553
3554
3555 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3556 struct hostapd_hw_modes *mode, u8 channel)
3557 {
3558 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3559 return 0;
3560
3561 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3562 }
3563
3564
3565 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3566 size_t buf_len)
3567 {
3568 struct wpa_supplicant *wpa_s = ctx;
3569
3570 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3571 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3572 break;
3573 }
3574 if (wpa_s == NULL)
3575 return -1;
3576
3577 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3578 }
3579
3580
3581 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3582 {
3583 struct wpa_supplicant *wpa_s = ctx;
3584
3585 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3586 struct wpa_ssid *ssid = wpa_s->current_ssid;
3587 if (ssid == NULL)
3588 continue;
3589 if (ssid->mode != WPAS_MODE_INFRA)
3590 continue;
3591 if (wpa_s->wpa_state != WPA_COMPLETED &&
3592 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3593 continue;
3594 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3595 return 1;
3596 }
3597
3598 return 0;
3599 }
3600
3601
3602 static int wpas_is_concurrent_session_active(void *ctx)
3603 {
3604 struct wpa_supplicant *wpa_s = ctx;
3605 struct wpa_supplicant *ifs;
3606
3607 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3608 if (ifs == wpa_s)
3609 continue;
3610 if (ifs->wpa_state > WPA_ASSOCIATED)
3611 return 1;
3612 }
3613 return 0;
3614 }
3615
3616
3617 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3618 {
3619 struct wpa_supplicant *wpa_s = ctx;
3620 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3621 }
3622
3623
3624 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3625 {
3626 struct wpa_interface iface;
3627 struct wpa_supplicant *p2pdev_wpa_s;
3628 char ifname[100];
3629 char force_name[100];
3630 int ret;
3631
3632 os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3633 wpa_s->ifname);
3634 force_name[0] = '\0';
3635 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3636 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3637 force_name, wpa_s->pending_interface_addr, NULL);
3638 if (ret < 0) {
3639 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3640 return ret;
3641 }
3642 os_strlcpy(wpa_s->pending_interface_name, ifname,
3643 sizeof(wpa_s->pending_interface_name));
3644
3645 os_memset(&iface, 0, sizeof(iface));
3646 iface.p2p_mgmt = 1;
3647 iface.ifname = wpa_s->pending_interface_name;
3648 iface.driver = wpa_s->driver->name;
3649 iface.driver_param = wpa_s->conf->driver_param;
3650 iface.confname = wpa_s->confname;
3651 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3652 if (!p2pdev_wpa_s) {
3653 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3654 return -1;
3655 }
3656 p2pdev_wpa_s->parent = wpa_s;
3657
3658 wpa_s->pending_interface_name[0] = '\0';
3659 return 0;
3660 }
3661
3662
3663 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3664 const u8 *noa, size_t noa_len)
3665 {
3666 struct wpa_supplicant *wpa_s, *intf = ctx;
3667 char hex[100];
3668
3669 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3670 if (wpa_s->waiting_presence_resp)
3671 break;
3672 }
3673 if (!wpa_s) {
3674 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3675 return;
3676 }
3677 wpa_s->waiting_presence_resp = 0;
3678
3679 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3680 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3681 " status=%u noa=%s", MAC2STR(src), status, hex);
3682 }
3683
3684
3685 /**
3686 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3687 * @global: Pointer to global data from wpa_supplicant_init()
3688 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3689 * Returns: 0 on success, -1 on failure
3690 */
3691 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3692 {
3693 struct p2p_config p2p;
3694 unsigned int r;
3695 int i;
3696
3697 if (wpa_s->conf->p2p_disabled)
3698 return 0;
3699
3700 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3701 return 0;
3702
3703 if (global->p2p)
3704 return 0;
3705
3706 os_memset(&p2p, 0, sizeof(p2p));
3707 p2p.cb_ctx = wpa_s;
3708 p2p.debug_print = wpas_p2p_debug_print;
3709 p2p.p2p_scan = wpas_p2p_scan;
3710 p2p.send_action = wpas_send_action;
3711 p2p.send_action_done = wpas_send_action_done;
3712 p2p.go_neg_completed = wpas_go_neg_completed;
3713 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3714 p2p.dev_found = wpas_dev_found;
3715 p2p.dev_lost = wpas_dev_lost;
3716 p2p.find_stopped = wpas_find_stopped;
3717 p2p.start_listen = wpas_start_listen;
3718 p2p.stop_listen = wpas_stop_listen;
3719 p2p.send_probe_resp = wpas_send_probe_resp;
3720 p2p.sd_request = wpas_sd_request;
3721 p2p.sd_response = wpas_sd_response;
3722 p2p.prov_disc_req = wpas_prov_disc_req;
3723 p2p.prov_disc_resp = wpas_prov_disc_resp;
3724 p2p.prov_disc_fail = wpas_prov_disc_fail;
3725 p2p.invitation_process = wpas_invitation_process;
3726 p2p.invitation_received = wpas_invitation_received;
3727 p2p.invitation_result = wpas_invitation_result;
3728 p2p.get_noa = wpas_get_noa;
3729 p2p.go_connected = wpas_go_connected;
3730 p2p.presence_resp = wpas_presence_resp;
3731 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3732
3733 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3734 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3735 p2p.dev_name = wpa_s->conf->device_name;
3736 p2p.manufacturer = wpa_s->conf->manufacturer;
3737 p2p.model_name = wpa_s->conf->model_name;
3738 p2p.model_number = wpa_s->conf->model_number;
3739 p2p.serial_number = wpa_s->conf->serial_number;
3740 if (wpa_s->wps) {
3741 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3742 p2p.config_methods = wpa_s->wps->config_methods;
3743 }
3744
3745 if (wpa_s->conf->p2p_listen_reg_class &&
3746 wpa_s->conf->p2p_listen_channel) {
3747 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3748 p2p.channel = wpa_s->conf->p2p_listen_channel;
3749 } else {
3750 p2p.reg_class = 81;
3751 /*
3752 * Pick one of the social channels randomly as the listen
3753 * channel.
3754 */
3755 os_get_random((u8 *) &r, sizeof(r));
3756 p2p.channel = 1 + (r % 3) * 5;
3757 }
3758 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3759
3760 if (wpa_s->conf->p2p_oper_reg_class &&
3761 wpa_s->conf->p2p_oper_channel) {
3762 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3763 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3764 p2p.cfg_op_channel = 1;
3765 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3766 "%d:%d", p2p.op_reg_class, p2p.op_channel);
3767
3768 } else {
3769 p2p.op_reg_class = 81;
3770 /*
3771 * Use random operation channel from (1, 6, 11) if no other
3772 * preference is indicated.
3773 */
3774 os_get_random((u8 *) &r, sizeof(r));
3775 p2p.op_channel = 1 + (r % 3) * 5;
3776 p2p.cfg_op_channel = 0;
3777 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3778 "%d:%d", p2p.op_reg_class, p2p.op_channel);
3779 }
3780
3781 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3782 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3783 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3784 }
3785
3786 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3787 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3788 p2p.country[2] = 0x04;
3789 } else
3790 os_memcpy(p2p.country, "XX\x04", 3);
3791
3792 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3793 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3794 "channel list");
3795 return -1;
3796 }
3797
3798 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3799 WPS_DEV_TYPE_LEN);
3800
3801 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3802 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3803 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3804
3805 p2p.concurrent_operations = !!(wpa_s->drv_flags &
3806 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3807
3808 p2p.max_peers = 100;
3809
3810 if (wpa_s->conf->p2p_ssid_postfix) {
3811 p2p.ssid_postfix_len =
3812 os_strlen(wpa_s->conf->p2p_ssid_postfix);
3813 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3814 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3815 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3816 p2p.ssid_postfix_len);
3817 }
3818
3819 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3820
3821 p2p.max_listen = wpa_s->max_remain_on_chan;
3822
3823 global->p2p = p2p_init(&p2p);
3824 if (global->p2p == NULL)
3825 return -1;
3826 global->p2p_init_wpa_s = wpa_s;
3827
3828 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3829 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3830 continue;
3831 p2p_add_wps_vendor_extension(
3832 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3833 }
3834
3835 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3836
3837 return 0;
3838 }
3839
3840
3841 /**
3842 * wpas_p2p_deinit - Deinitialize per-interface P2P data
3843 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3844 *
3845 * This function deinitialize per-interface P2P data.
3846 */
3847 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3848 {
3849 if (wpa_s->driver && wpa_s->drv_priv)
3850 wpa_drv_probe_req_report(wpa_s, 0);
3851
3852 if (wpa_s->go_params) {
3853 /* Clear any stored provisioning info */
3854 p2p_clear_provisioning_info(
3855 wpa_s->global->p2p,
3856 wpa_s->go_params->peer_device_addr);
3857 }
3858
3859 os_free(wpa_s->go_params);
3860 wpa_s->go_params = NULL;
3861 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3862 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3863 wpa_s->p2p_long_listen = 0;
3864 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3865 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3866 wpas_p2p_remove_pending_group_interface(wpa_s);
3867 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3868 wpas_p2p_listen_work_done(wpa_s);
3869 if (wpa_s->p2p_send_action_work) {
3870 os_free(wpa_s->p2p_send_action_work->ctx);
3871 radio_work_done(wpa_s->p2p_send_action_work);
3872 wpa_s->p2p_send_action_work = NULL;
3873 }
3874 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3875
3876 wpabuf_free(wpa_s->p2p_oob_dev_pw);
3877 wpa_s->p2p_oob_dev_pw = NULL;
3878
3879 /* TODO: remove group interface from the driver if this wpa_s instance
3880 * is on top of a P2P group interface */
3881 }
3882
3883
3884 /**
3885 * wpas_p2p_deinit_global - Deinitialize global P2P module
3886 * @global: Pointer to global data from wpa_supplicant_init()
3887 *
3888 * This function deinitializes the global (per device) P2P module.
3889 */
3890 void wpas_p2p_deinit_global(struct wpa_global *global)
3891 {
3892 struct wpa_supplicant *wpa_s, *tmp;
3893
3894 wpa_s = global->ifaces;
3895 if (wpa_s)
3896 wpas_p2p_service_flush(wpa_s);
3897
3898 if (global->p2p == NULL)
3899 return;
3900
3901 /* Remove remaining P2P group interfaces */
3902 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3903 wpa_s = wpa_s->next;
3904 while (wpa_s) {
3905 tmp = global->ifaces;
3906 while (tmp &&
3907 (tmp == wpa_s ||
3908 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3909 tmp = tmp->next;
3910 }
3911 if (tmp == NULL)
3912 break;
3913 /* Disconnect from the P2P group and deinit the interface */
3914 wpas_p2p_disconnect(tmp);
3915 }
3916
3917 /*
3918 * Deinit GO data on any possibly remaining interface (if main
3919 * interface is used as GO).
3920 */
3921 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3922 if (wpa_s->ap_iface)
3923 wpas_p2p_group_deinit(wpa_s);
3924 }
3925
3926 p2p_deinit(global->p2p);
3927 global->p2p = NULL;
3928 global->p2p_init_wpa_s = NULL;
3929 }
3930
3931
3932 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3933 {
3934 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
3935 wpa_s->conf->p2p_no_group_iface)
3936 return 0; /* separate interface disabled per configuration */
3937 if (wpa_s->drv_flags &
3938 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3939 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3940 return 1; /* P2P group requires a new interface in every case
3941 */
3942 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3943 return 0; /* driver does not support concurrent operations */
3944 if (wpa_s->global->ifaces->next)
3945 return 1; /* more that one interface already in use */
3946 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3947 return 1; /* this interface is already in use */
3948 return 0;
3949 }
3950
3951
3952 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3953 const u8 *peer_addr,
3954 enum p2p_wps_method wps_method,
3955 int go_intent, const u8 *own_interface_addr,
3956 unsigned int force_freq, int persistent_group,
3957 struct wpa_ssid *ssid, unsigned int pref_freq)
3958 {
3959 if (persistent_group && wpa_s->conf->persistent_reconnect)
3960 persistent_group = 2;
3961
3962 /*
3963 * Increase GO config timeout if HT40 is used since it takes some time
3964 * to scan channels for coex purposes before the BSS can be started.
3965 */
3966 p2p_set_config_timeout(wpa_s->global->p2p,
3967 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3968
3969 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3970 go_intent, own_interface_addr, force_freq,
3971 persistent_group, ssid ? ssid->ssid : NULL,
3972 ssid ? ssid->ssid_len : 0,
3973 wpa_s->p2p_pd_before_go_neg, pref_freq,
3974 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
3975 0);
3976 }
3977
3978
3979 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3980 const u8 *peer_addr,
3981 enum p2p_wps_method wps_method,
3982 int go_intent, const u8 *own_interface_addr,
3983 unsigned int force_freq, int persistent_group,
3984 struct wpa_ssid *ssid, unsigned int pref_freq)
3985 {
3986 if (persistent_group && wpa_s->conf->persistent_reconnect)
3987 persistent_group = 2;
3988
3989 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3990 go_intent, own_interface_addr, force_freq,
3991 persistent_group, ssid ? ssid->ssid : NULL,
3992 ssid ? ssid->ssid_len : 0, pref_freq,
3993 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
3994 0);
3995 }
3996
3997
3998 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3999 {
4000 wpa_s->p2p_join_scan_count++;
4001 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4002 wpa_s->p2p_join_scan_count);
4003 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4004 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4005 " for join operationg - stop join attempt",
4006 MAC2STR(wpa_s->pending_join_iface_addr));
4007 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4008 if (wpa_s->p2p_auto_pd) {
4009 wpa_s->p2p_auto_pd = 0;
4010 wpa_msg_global(wpa_s, MSG_INFO,
4011 P2P_EVENT_PROV_DISC_FAILURE
4012 " p2p_dev_addr=" MACSTR " status=N/A",
4013 MAC2STR(wpa_s->pending_join_dev_addr));
4014 return;
4015 }
4016 wpa_msg_global(wpa_s->parent, MSG_INFO,
4017 P2P_EVENT_GROUP_FORMATION_FAILURE);
4018 }
4019 }
4020
4021
4022 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4023 {
4024 int *freqs, res, num, i;
4025
4026 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4027 /* Multiple channels are supported and not all are in use */
4028 return 0;
4029 }
4030
4031 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4032 if (!freqs)
4033 return 1;
4034
4035 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4036 wpa_s->num_multichan_concurrent);
4037 if (num < 0) {
4038 res = 1;
4039 goto exit_free;
4040 }
4041
4042 for (i = 0; i < num; i++) {
4043 if (freqs[i] == freq) {
4044 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4045 freq);
4046 res = 0;
4047 goto exit_free;
4048 }
4049 }
4050
4051 res = 1;
4052
4053 exit_free:
4054 os_free(freqs);
4055 return res;
4056 }
4057
4058
4059 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4060 const u8 *peer_dev_addr)
4061 {
4062 struct wpa_bss *bss;
4063 int updated;
4064
4065 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4066 if (bss == NULL)
4067 return -1;
4068 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4069 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4070 "last scan");
4071 return 0;
4072 }
4073
4074 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4075 &bss->last_update);
4076 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4077 "%ld.%06ld (%supdated in last scan)",
4078 bss->last_update.sec, bss->last_update.usec,
4079 updated ? "": "not ");
4080
4081 return updated;
4082 }
4083
4084
4085 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4086 struct wpa_scan_results *scan_res)
4087 {
4088 struct wpa_bss *bss = NULL;
4089 int freq;
4090 u8 iface_addr[ETH_ALEN];
4091
4092 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4093
4094 if (wpa_s->global->p2p_disabled)
4095 return;
4096
4097 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4098 scan_res ? (int) scan_res->num : -1,
4099 wpa_s->p2p_auto_join ? "auto_" : "");
4100
4101 if (scan_res)
4102 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4103
4104 if (wpa_s->p2p_auto_pd) {
4105 int join = wpas_p2p_peer_go(wpa_s,
4106 wpa_s->pending_join_dev_addr);
4107 if (join == 0 &&
4108 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4109 wpa_s->auto_pd_scan_retry++;
4110 bss = wpa_bss_get_bssid_latest(
4111 wpa_s, wpa_s->pending_join_dev_addr);
4112 if (bss) {
4113 freq = bss->freq;
4114 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4115 "the peer " MACSTR " at %d MHz",
4116 wpa_s->auto_pd_scan_retry,
4117 MAC2STR(wpa_s->
4118 pending_join_dev_addr),
4119 freq);
4120 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4121 return;
4122 }
4123 }
4124
4125 if (join < 0)
4126 join = 0;
4127
4128 wpa_s->p2p_auto_pd = 0;
4129 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4130 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4131 MAC2STR(wpa_s->pending_join_dev_addr), join);
4132 if (p2p_prov_disc_req(wpa_s->global->p2p,
4133 wpa_s->pending_join_dev_addr,
4134 wpa_s->pending_pd_config_methods, join,
4135 0, wpa_s->user_initiated_pd) < 0) {
4136 wpa_s->p2p_auto_pd = 0;
4137 wpa_msg_global(wpa_s, MSG_INFO,
4138 P2P_EVENT_PROV_DISC_FAILURE
4139 " p2p_dev_addr=" MACSTR " status=N/A",
4140 MAC2STR(wpa_s->pending_join_dev_addr));
4141 }
4142 return;
4143 }
4144
4145 if (wpa_s->p2p_auto_join) {
4146 int join = wpas_p2p_peer_go(wpa_s,
4147 wpa_s->pending_join_dev_addr);
4148 if (join < 0) {
4149 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4150 "running a GO -> use GO Negotiation");
4151 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4152 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4153 wpa_s->p2p_persistent_group, 0, 0, 0,
4154 wpa_s->p2p_go_intent,
4155 wpa_s->p2p_connect_freq,
4156 wpa_s->p2p_persistent_id,
4157 wpa_s->p2p_pd_before_go_neg,
4158 wpa_s->p2p_go_ht40,
4159 wpa_s->p2p_go_vht);
4160 return;
4161 }
4162
4163 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4164 "try to join the group", join ? "" :
4165 " in older scan");
4166 if (!join)
4167 wpa_s->p2p_fallback_to_go_neg = 1;
4168 }
4169
4170 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4171 wpa_s->pending_join_iface_addr);
4172 if (freq < 0 &&
4173 p2p_get_interface_addr(wpa_s->global->p2p,
4174 wpa_s->pending_join_dev_addr,
4175 iface_addr) == 0 &&
4176 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4177 {
4178 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4179 "address for join from " MACSTR " to " MACSTR
4180 " based on newly discovered P2P peer entry",
4181 MAC2STR(wpa_s->pending_join_iface_addr),
4182 MAC2STR(iface_addr));
4183 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4184 ETH_ALEN);
4185
4186 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4187 wpa_s->pending_join_iface_addr);
4188 }
4189 if (freq >= 0) {
4190 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4191 "from P2P peer table: %d MHz", freq);
4192 }
4193 if (wpa_s->p2p_join_ssid_len) {
4194 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4195 MACSTR " and SSID %s",
4196 MAC2STR(wpa_s->pending_join_iface_addr),
4197 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4198 wpa_s->p2p_join_ssid_len));
4199 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4200 wpa_s->p2p_join_ssid,
4201 wpa_s->p2p_join_ssid_len);
4202 }
4203 if (!bss) {
4204 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4205 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4206 bss = wpa_bss_get_bssid_latest(wpa_s,
4207 wpa_s->pending_join_iface_addr);
4208 }
4209 if (bss) {
4210 freq = bss->freq;
4211 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4212 "from BSS table: %d MHz (SSID %s)", freq,
4213 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4214 }
4215 if (freq > 0) {
4216 u16 method;
4217
4218 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4219 wpa_msg_global(wpa_s->parent, MSG_INFO,
4220 P2P_EVENT_GROUP_FORMATION_FAILURE
4221 "reason=FREQ_CONFLICT");
4222 return;
4223 }
4224
4225 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4226 "prior to joining an existing group (GO " MACSTR
4227 " freq=%u MHz)",
4228 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4229 wpa_s->pending_pd_before_join = 1;
4230
4231 switch (wpa_s->pending_join_wps_method) {
4232 case WPS_PIN_DISPLAY:
4233 method = WPS_CONFIG_KEYPAD;
4234 break;
4235 case WPS_PIN_KEYPAD:
4236 method = WPS_CONFIG_DISPLAY;
4237 break;
4238 case WPS_PBC:
4239 method = WPS_CONFIG_PUSHBUTTON;
4240 break;
4241 default:
4242 method = 0;
4243 break;
4244 }
4245
4246 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4247 wpa_s->pending_join_dev_addr) ==
4248 method)) {
4249 /*
4250 * We have already performed provision discovery for
4251 * joining the group. Proceed directly to join
4252 * operation without duplicated provision discovery. */
4253 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4254 "with " MACSTR " already done - proceed to "
4255 "join",
4256 MAC2STR(wpa_s->pending_join_dev_addr));
4257 wpa_s->pending_pd_before_join = 0;
4258 goto start;
4259 }
4260
4261 if (p2p_prov_disc_req(wpa_s->global->p2p,
4262 wpa_s->pending_join_dev_addr, method, 1,
4263 freq, wpa_s->user_initiated_pd) < 0) {
4264 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4265 "Discovery Request before joining an "
4266 "existing group");
4267 wpa_s->pending_pd_before_join = 0;
4268 goto start;
4269 }
4270 return;
4271 }
4272
4273 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4274 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4275 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4276 wpas_p2p_check_join_scan_limit(wpa_s);
4277 return;
4278
4279 start:
4280 /* Start join operation immediately */
4281 wpas_p2p_join_start(wpa_s);
4282 }
4283
4284
4285 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4286 const u8 *ssid, size_t ssid_len)
4287 {
4288 int ret;
4289 struct wpa_driver_scan_params params;
4290 struct wpabuf *wps_ie, *ies;
4291 size_t ielen;
4292 int freqs[2] = { 0, 0 };
4293
4294 os_memset(&params, 0, sizeof(params));
4295
4296 /* P2P Wildcard SSID */
4297 params.num_ssids = 1;
4298 if (ssid && ssid_len) {
4299 params.ssids[0].ssid = ssid;
4300 params.ssids[0].ssid_len = ssid_len;
4301 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4302 wpa_s->p2p_join_ssid_len = ssid_len;
4303 } else {
4304 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4305 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4306 wpa_s->p2p_join_ssid_len = 0;
4307 }
4308
4309 wpa_s->wps->dev.p2p = 1;
4310 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4311 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4312 NULL);
4313 if (wps_ie == NULL) {
4314 wpas_p2p_scan_res_join(wpa_s, NULL);
4315 return;
4316 }
4317
4318 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4319 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4320 if (ies == NULL) {
4321 wpabuf_free(wps_ie);
4322 wpas_p2p_scan_res_join(wpa_s, NULL);
4323 return;
4324 }
4325 wpabuf_put_buf(ies, wps_ie);
4326 wpabuf_free(wps_ie);
4327
4328 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4329
4330 params.p2p_probe = 1;
4331 params.extra_ies = wpabuf_head(ies);
4332 params.extra_ies_len = wpabuf_len(ies);
4333
4334 if (!freq) {
4335 int oper_freq;
4336 /*
4337 * If freq is not provided, check the operating freq of the GO
4338 * and use a single channel scan on if possible.
4339 */
4340 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4341 wpa_s->pending_join_iface_addr);
4342 if (oper_freq > 0)
4343 freq = oper_freq;
4344 }
4345 if (freq > 0) {
4346 freqs[0] = freq;
4347 params.freqs = freqs;
4348 }
4349
4350 /*
4351 * Run a scan to update BSS table and start Provision Discovery once
4352 * the new scan results become available.
4353 */
4354 ret = wpa_drv_scan(wpa_s, &params);
4355 if (!ret) {
4356 os_get_reltime(&wpa_s->scan_trigger_time);
4357 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4358 wpa_s->own_scan_requested = 1;
4359 }
4360
4361 wpabuf_free(ies);
4362
4363 if (ret) {
4364 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4365 "try again later");
4366 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4367 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4368 wpas_p2p_check_join_scan_limit(wpa_s);
4369 }
4370 }
4371
4372
4373 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4374 {
4375 struct wpa_supplicant *wpa_s = eloop_ctx;
4376 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4377 }
4378
4379
4380 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4381 const u8 *dev_addr, enum p2p_wps_method wps_method,
4382 int auto_join, const u8 *ssid, size_t ssid_len)
4383 {
4384 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4385 MACSTR " dev " MACSTR ")%s",
4386 MAC2STR(iface_addr), MAC2STR(dev_addr),
4387 auto_join ? " (auto_join)" : "");
4388 if (ssid && ssid_len) {
4389 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4390 wpa_ssid_txt(ssid, ssid_len));
4391 }
4392
4393 wpa_s->p2p_auto_pd = 0;
4394 wpa_s->p2p_auto_join = !!auto_join;
4395 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4396 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4397 wpa_s->pending_join_wps_method = wps_method;
4398
4399 /* Make sure we are not running find during connection establishment */
4400 wpas_p2p_stop_find(wpa_s);
4401
4402 wpa_s->p2p_join_scan_count = 0;
4403 wpas_p2p_join_scan_req(wpa_s, 0, ssid, ssid_len);
4404 return 0;
4405 }
4406
4407
4408 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
4409 {
4410 struct wpa_supplicant *group;
4411 struct p2p_go_neg_results res;
4412 struct wpa_bss *bss;
4413
4414 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4415 if (group == NULL)
4416 return -1;
4417 if (group != wpa_s) {
4418 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4419 sizeof(group->p2p_pin));
4420 group->p2p_wps_method = wpa_s->p2p_wps_method;
4421 } else {
4422 /*
4423 * Need to mark the current interface for p2p_group_formation
4424 * when a separate group interface is not used. This is needed
4425 * to allow p2p_cancel stop a pending p2p_connect-join.
4426 * wpas_p2p_init_group_interface() addresses this for the case
4427 * where a separate group interface is used.
4428 */
4429 wpa_s->global->p2p_group_formation = wpa_s;
4430 }
4431
4432 group->p2p_in_provisioning = 1;
4433 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4434
4435 os_memset(&res, 0, sizeof(res));
4436 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4437 ETH_ALEN);
4438 res.wps_method = wpa_s->pending_join_wps_method;
4439 bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr);
4440 if (bss) {
4441 res.freq = bss->freq;
4442 res.ssid_len = bss->ssid_len;
4443 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4444 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency "
4445 "from BSS table: %d MHz (SSID %s)", bss->freq,
4446 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4447 }
4448
4449 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4450 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4451 "starting client");
4452 wpa_drv_cancel_remain_on_channel(wpa_s);
4453 wpa_s->off_channel_freq = 0;
4454 wpa_s->roc_waiting_drv_freq = 0;
4455 }
4456 wpas_start_wps_enrollee(group, &res);
4457
4458 /*
4459 * Allow a longer timeout for join-a-running-group than normal 15
4460 * second group formation timeout since the GO may not have authorized
4461 * our connection yet.
4462 */
4463 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4464 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4465 wpa_s, NULL);
4466
4467 return 0;
4468 }
4469
4470
4471 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4472 int *force_freq, int *pref_freq, int go)
4473 {
4474 int *freqs, res;
4475 unsigned int freq_in_use = 0, num, i;
4476
4477 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4478 if (!freqs)
4479 return -1;
4480
4481 num = get_shared_radio_freqs(wpa_s, freqs,
4482 wpa_s->num_multichan_concurrent);
4483 wpa_printf(MSG_DEBUG,
4484 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4485 freq, wpa_s->num_multichan_concurrent, num);
4486
4487 if (freq > 0) {
4488 int ret;
4489 if (go)
4490 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4491 else
4492 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4493 if (!ret) {
4494 wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4495 "(%u MHz) is not supported for P2P uses",
4496 freq);
4497 res = -3;
4498 goto exit_free;
4499 }
4500
4501 for (i = 0; i < num; i++) {
4502 if (freqs[i] == freq)
4503 freq_in_use = 1;
4504 }
4505
4506 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4507 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4508 freq);
4509 res = -2;
4510 goto exit_free;
4511 }
4512 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4513 "requested channel (%u MHz)", freq);
4514 *force_freq = freq;
4515 goto exit_ok;
4516 }
4517
4518 for (i = 0; i < num; i++) {
4519 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4520 continue;
4521
4522 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4523 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4524 freqs[i]);
4525 *pref_freq = freqs[i];
4526 } else {
4527 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4528 freqs[i]);
4529 *force_freq = freqs[i];
4530 }
4531 break;
4532 }
4533
4534 if (i == num) {
4535 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4536 wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4537 *force_freq = 0;
4538 } else if (num < wpa_s->num_multichan_concurrent) {
4539 wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4540 *force_freq = 0;
4541 } else {
4542 wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4543 res = -2;
4544 goto exit_free;
4545 }
4546 }
4547
4548 exit_ok:
4549 res = 0;
4550 exit_free:
4551 os_free(freqs);
4552 return res;
4553 }
4554
4555
4556 /**
4557 * wpas_p2p_connect - Request P2P Group Formation to be started
4558 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4559 * @peer_addr: Address of the peer P2P Device
4560 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4561 * @persistent_group: Whether to create a persistent group
4562 * @auto_join: Whether to select join vs. GO Negotiation automatically
4563 * @join: Whether to join an existing group (as a client) instead of starting
4564 * Group Owner negotiation; @peer_addr is BSSID in that case
4565 * @auth: Whether to only authorize the connection instead of doing that and
4566 * initiating Group Owner negotiation
4567 * @go_intent: GO Intent or -1 to use default
4568 * @freq: Frequency for the group or 0 for auto-selection
4569 * @persistent_id: Persistent group credentials to use for forcing GO
4570 * parameters or -1 to generate new values (SSID/passphrase)
4571 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4572 * interoperability workaround when initiating group formation
4573 * @ht40: Start GO with 40 MHz channel width
4574 * @vht: Start GO with VHT support
4575 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4576 * failure, -2 on failure due to channel not currently available,
4577 * -3 if forced channel is not supported
4578 */
4579 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4580 const char *pin, enum p2p_wps_method wps_method,
4581 int persistent_group, int auto_join, int join, int auth,
4582 int go_intent, int freq, int persistent_id, int pd,
4583 int ht40, int vht)
4584 {
4585 int force_freq = 0, pref_freq = 0;
4586 int ret = 0, res;
4587 enum wpa_driver_if_type iftype;
4588 const u8 *if_addr;
4589 struct wpa_ssid *ssid = NULL;
4590
4591 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4592 return -1;
4593
4594 if (persistent_id >= 0) {
4595 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4596 if (ssid == NULL || ssid->disabled != 2 ||
4597 ssid->mode != WPAS_MODE_P2P_GO)
4598 return -1;
4599 }
4600
4601 os_free(wpa_s->global->add_psk);
4602 wpa_s->global->add_psk = NULL;
4603
4604 wpa_s->global->p2p_fail_on_wps_complete = 0;
4605
4606 if (go_intent < 0)
4607 go_intent = wpa_s->conf->p2p_go_intent;
4608
4609 if (!auth)
4610 wpa_s->p2p_long_listen = 0;
4611
4612 wpa_s->p2p_wps_method = wps_method;
4613 wpa_s->p2p_persistent_group = !!persistent_group;
4614 wpa_s->p2p_persistent_id = persistent_id;
4615 wpa_s->p2p_go_intent = go_intent;
4616 wpa_s->p2p_connect_freq = freq;
4617 wpa_s->p2p_fallback_to_go_neg = 0;
4618 wpa_s->p2p_pd_before_go_neg = !!pd;
4619 wpa_s->p2p_go_ht40 = !!ht40;
4620 wpa_s->p2p_go_vht = !!vht;
4621
4622 if (pin)
4623 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4624 else if (wps_method == WPS_PIN_DISPLAY) {
4625 ret = wps_generate_pin();
4626 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4627 ret);
4628 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4629 wpa_s->p2p_pin);
4630 } else
4631 wpa_s->p2p_pin[0] = '\0';
4632
4633 if (join || auto_join) {
4634 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4635 if (auth) {
4636 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4637 "connect a running group from " MACSTR,
4638 MAC2STR(peer_addr));
4639 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4640 return ret;
4641 }
4642 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4643 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4644 iface_addr) < 0) {
4645 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4646 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4647 dev_addr);
4648 }
4649 if (auto_join) {
4650 os_get_reltime(&wpa_s->p2p_auto_started);
4651 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4652 "%ld.%06ld",
4653 wpa_s->p2p_auto_started.sec,
4654 wpa_s->p2p_auto_started.usec);
4655 }
4656 wpa_s->user_initiated_pd = 1;
4657 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4658 auto_join, NULL, 0) < 0)
4659 return -1;
4660 return ret;
4661 }
4662
4663 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4664 go_intent == 15);
4665 if (res)
4666 return res;
4667 wpas_p2p_set_own_freq_preference(wpa_s,
4668 force_freq ? force_freq : pref_freq);
4669
4670 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4671
4672 if (wpa_s->create_p2p_iface) {
4673 /* Prepare to add a new interface for the group */
4674 iftype = WPA_IF_P2P_GROUP;
4675 if (go_intent == 15)
4676 iftype = WPA_IF_P2P_GO;
4677 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4678 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4679 "interface for the group");
4680 return -1;
4681 }
4682
4683 if_addr = wpa_s->pending_interface_addr;
4684 } else
4685 if_addr = wpa_s->own_addr;
4686
4687 if (auth) {
4688 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4689 go_intent, if_addr,
4690 force_freq, persistent_group, ssid,
4691 pref_freq) < 0)
4692 return -1;
4693 return ret;
4694 }
4695
4696 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4697 go_intent, if_addr, force_freq,
4698 persistent_group, ssid, pref_freq) < 0) {
4699 if (wpa_s->create_p2p_iface)
4700 wpas_p2p_remove_pending_group_interface(wpa_s);
4701 return -1;
4702 }
4703 return ret;
4704 }
4705
4706
4707 /**
4708 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4709 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4710 * @freq: Frequency of the channel in MHz
4711 * @duration: Duration of the stay on the channel in milliseconds
4712 *
4713 * This callback is called when the driver indicates that it has started the
4714 * requested remain-on-channel duration.
4715 */
4716 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4717 unsigned int freq, unsigned int duration)
4718 {
4719 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4720 return;
4721 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4722 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4723 wpa_s->pending_listen_duration);
4724 wpa_s->pending_listen_freq = 0;
4725 }
4726 }
4727
4728
4729 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4730 unsigned int timeout)
4731 {
4732 /* Limit maximum Listen state time based on driver limitation. */
4733 if (timeout > wpa_s->max_remain_on_chan)
4734 timeout = wpa_s->max_remain_on_chan;
4735
4736 return p2p_listen(wpa_s->global->p2p, timeout);
4737 }
4738
4739
4740 /**
4741 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4742 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4743 * @freq: Frequency of the channel in MHz
4744 *
4745 * This callback is called when the driver indicates that a remain-on-channel
4746 * operation has been completed, i.e., the duration on the requested channel
4747 * has timed out.
4748 */
4749 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4750 unsigned int freq)
4751 {
4752 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4753 "(p2p_long_listen=%d ms pending_action_tx=%p)",
4754 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4755 wpas_p2p_listen_work_done(wpa_s);
4756 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4757 return;
4758 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4759 return; /* P2P module started a new operation */
4760 if (offchannel_pending_action_tx(wpa_s))
4761 return;
4762 if (wpa_s->p2p_long_listen > 0)
4763 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4764 if (wpa_s->p2p_long_listen > 0) {
4765 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4766 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4767 } else {
4768 /*
4769 * When listen duration is over, stop listen & update p2p_state
4770 * to IDLE.
4771 */
4772 p2p_stop_listen(wpa_s->global->p2p);
4773 }
4774 }
4775
4776
4777 /**
4778 * wpas_p2p_group_remove - Remove a P2P group
4779 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4780 * @ifname: Network interface name of the group interface or "*" to remove all
4781 * groups
4782 * Returns: 0 on success, -1 on failure
4783 *
4784 * This function is used to remove a P2P group. This can be used to disconnect
4785 * from a group in which the local end is a P2P Client or to end a P2P Group in
4786 * case the local end is the Group Owner. If a virtual network interface was
4787 * created for this group, that interface will be removed. Otherwise, only the
4788 * configured P2P group network will be removed from the interface.
4789 */
4790 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4791 {
4792 struct wpa_global *global = wpa_s->global;
4793
4794 if (os_strcmp(ifname, "*") == 0) {
4795 struct wpa_supplicant *prev;
4796 wpa_s = global->ifaces;
4797 while (wpa_s) {
4798 prev = wpa_s;
4799 wpa_s = wpa_s->next;
4800 if (prev->p2p_group_interface !=
4801 NOT_P2P_GROUP_INTERFACE ||
4802 (prev->current_ssid &&
4803 prev->current_ssid->p2p_group))
4804 wpas_p2p_disconnect(prev);
4805 }
4806 return 0;
4807 }
4808
4809 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4810 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4811 break;
4812 }
4813
4814 return wpas_p2p_disconnect(wpa_s);
4815 }
4816
4817
4818 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4819 {
4820 unsigned int r;
4821
4822 if (freq == 2) {
4823 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4824 "band");
4825 if (wpa_s->best_24_freq > 0 &&
4826 p2p_supported_freq_go(wpa_s->global->p2p,
4827 wpa_s->best_24_freq)) {
4828 freq = wpa_s->best_24_freq;
4829 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4830 "channel: %d MHz", freq);
4831 } else {
4832 os_get_random((u8 *) &r, sizeof(r));
4833 freq = 2412 + (r % 3) * 25;
4834 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4835 "channel: %d MHz", freq);
4836 }
4837 }
4838
4839 if (freq == 5) {
4840 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4841 "band");
4842 if (wpa_s->best_5_freq > 0 &&
4843 p2p_supported_freq_go(wpa_s->global->p2p,
4844 wpa_s->best_5_freq)) {
4845 freq = wpa_s->best_5_freq;
4846 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4847 "channel: %d MHz", freq);
4848 } else {
4849 os_get_random((u8 *) &r, sizeof(r));
4850 freq = 5180 + (r % 4) * 20;
4851 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4852 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4853 "5 GHz channel for P2P group");
4854 return -1;
4855 }
4856 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4857 "channel: %d MHz", freq);
4858 }
4859 }
4860
4861 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4862 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4863 "(%u MHz) is not supported for P2P uses",
4864 freq);
4865 return -1;
4866 }
4867
4868 return freq;
4869 }
4870
4871
4872 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4873 struct p2p_go_neg_results *params,
4874 int freq, int ht40, int vht,
4875 const struct p2p_channels *channels)
4876 {
4877 int res, *freqs;
4878 unsigned int pref_freq;
4879 unsigned int num, i;
4880
4881 os_memset(params, 0, sizeof(*params));
4882 params->role_go = 1;
4883 params->ht40 = ht40;
4884 params->vht = vht;
4885 if (freq) {
4886 if (!freq_included(channels, freq)) {
4887 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4888 "accepted", freq);
4889 return -1;
4890 }
4891 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4892 "frequency %d MHz", freq);
4893 params->freq = freq;
4894 } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4895 wpa_s->conf->p2p_oper_channel >= 1 &&
4896 wpa_s->conf->p2p_oper_channel <= 11 &&
4897 freq_included(channels,
4898 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4899 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4900 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4901 "frequency %d MHz", params->freq);
4902 } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4903 wpa_s->conf->p2p_oper_reg_class == 116 ||
4904 wpa_s->conf->p2p_oper_reg_class == 117 ||
4905 wpa_s->conf->p2p_oper_reg_class == 124 ||
4906 wpa_s->conf->p2p_oper_reg_class == 126 ||
4907 wpa_s->conf->p2p_oper_reg_class == 127) &&
4908 freq_included(channels,
4909 5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4910 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4911 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4912 "frequency %d MHz", params->freq);
4913 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4914 wpa_s->best_overall_freq > 0 &&
4915 p2p_supported_freq_go(wpa_s->global->p2p,
4916 wpa_s->best_overall_freq) &&
4917 freq_included(channels, wpa_s->best_overall_freq)) {
4918 params->freq = wpa_s->best_overall_freq;
4919 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
4920 "channel %d MHz", params->freq);
4921 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4922 wpa_s->best_24_freq > 0 &&
4923 p2p_supported_freq_go(wpa_s->global->p2p,
4924 wpa_s->best_24_freq) &&
4925 freq_included(channels, wpa_s->best_24_freq)) {
4926 params->freq = wpa_s->best_24_freq;
4927 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
4928 "channel %d MHz", params->freq);
4929 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4930 wpa_s->best_5_freq > 0 &&
4931 p2p_supported_freq_go(wpa_s->global->p2p,
4932 wpa_s->best_5_freq) &&
4933 freq_included(channels, wpa_s->best_5_freq)) {
4934 params->freq = wpa_s->best_5_freq;
4935 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
4936 "channel %d MHz", params->freq);
4937 } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
4938 channels))) {
4939 params->freq = pref_freq;
4940 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
4941 "channels", params->freq);
4942 } else {
4943 int chan;
4944 for (chan = 0; chan < 11; chan++) {
4945 params->freq = 2412 + chan * 5;
4946 if (!wpas_p2p_disallowed_freq(wpa_s->global,
4947 params->freq) &&
4948 freq_included(channels, params->freq))
4949 break;
4950 }
4951 if (chan == 11) {
4952 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
4953 "allowed");
4954 return -1;
4955 }
4956 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
4957 "known)", params->freq);
4958 }
4959
4960 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4961 if (!freqs)
4962 return -1;
4963
4964 res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4965 wpa_s->num_multichan_concurrent);
4966 if (res < 0) {
4967 os_free(freqs);
4968 return -1;
4969 }
4970 num = res;
4971
4972 for (i = 0; i < num; i++) {
4973 if (freq && freqs[i] == freq)
4974 break;
4975 if (!freq && freq_included(channels, freqs[i])) {
4976 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
4977 freqs[i]);
4978 params->freq = freqs[i];
4979 break;
4980 }
4981 }
4982
4983 if (i == num) {
4984 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
4985 if (freq)
4986 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
4987 else
4988 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
4989 os_free(freqs);
4990 return -1;
4991 } else if (num == 0) {
4992 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
4993 } else {
4994 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
4995 }
4996 }
4997
4998 os_free(freqs);
4999 return 0;
5000 }
5001
5002
5003 static struct wpa_supplicant *
5004 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5005 int go)
5006 {
5007 struct wpa_supplicant *group_wpa_s;
5008
5009 if (!wpas_p2p_create_iface(wpa_s)) {
5010 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5011 "operations");
5012 wpa_s->p2p_first_connection_timeout = 0;
5013 return wpa_s;
5014 }
5015
5016 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5017 WPA_IF_P2P_CLIENT) < 0) {
5018 wpa_msg_global(wpa_s, MSG_ERROR,
5019 "P2P: Failed to add group interface");
5020 return NULL;
5021 }
5022 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5023 if (group_wpa_s == NULL) {
5024 wpa_msg_global(wpa_s, MSG_ERROR,
5025 "P2P: Failed to initialize group interface");
5026 wpas_p2p_remove_pending_group_interface(wpa_s);
5027 return NULL;
5028 }
5029
5030 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5031 group_wpa_s->ifname);
5032 group_wpa_s->p2p_first_connection_timeout = 0;
5033 return group_wpa_s;
5034 }
5035
5036
5037 /**
5038 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5039 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5040 * @persistent_group: Whether to create a persistent group
5041 * @freq: Frequency for the group or 0 to indicate no hardcoding
5042 * @ht40: Start GO with 40 MHz channel width
5043 * @vht: Start GO with VHT support
5044 * Returns: 0 on success, -1 on failure
5045 *
5046 * This function creates a new P2P group with the local end as the Group Owner,
5047 * i.e., without using Group Owner Negotiation.
5048 */
5049 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5050 int freq, int ht40, int vht)
5051 {
5052 struct p2p_go_neg_results params;
5053
5054 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5055 return -1;
5056
5057 os_free(wpa_s->global->add_psk);
5058 wpa_s->global->add_psk = NULL;
5059
5060 /* Make sure we are not running find during connection establishment */
5061 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5062 wpas_p2p_stop_find_oper(wpa_s);
5063
5064 freq = wpas_p2p_select_go_freq(wpa_s, freq);
5065 if (freq < 0)
5066 return -1;
5067
5068 if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5069 return -1;
5070 if (params.freq &&
5071 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5072 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5073 "(%u MHz) is not supported for P2P uses",
5074 params.freq);
5075 return -1;
5076 }
5077 p2p_go_params(wpa_s->global->p2p, &params);
5078 params.persistent_group = persistent_group;
5079
5080 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5081 if (wpa_s == NULL)
5082 return -1;
5083 wpas_start_wps_go(wpa_s, &params, 0);
5084
5085 return 0;
5086 }
5087
5088
5089 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5090 struct wpa_ssid *params, int addr_allocated)
5091 {
5092 struct wpa_ssid *ssid;
5093
5094 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5095 if (wpa_s == NULL)
5096 return -1;
5097 wpa_s->p2p_last_4way_hs_fail = NULL;
5098
5099 wpa_supplicant_ap_deinit(wpa_s);
5100
5101 ssid = wpa_config_add_network(wpa_s->conf);
5102 if (ssid == NULL)
5103 return -1;
5104 wpa_config_set_network_defaults(ssid);
5105 ssid->temporary = 1;
5106 ssid->proto = WPA_PROTO_RSN;
5107 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5108 ssid->group_cipher = WPA_CIPHER_CCMP;
5109 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5110 ssid->ssid = os_malloc(params->ssid_len);
5111 if (ssid->ssid == NULL) {
5112 wpa_config_remove_network(wpa_s->conf, ssid->id);
5113 return -1;
5114 }
5115 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5116 ssid->ssid_len = params->ssid_len;
5117 ssid->p2p_group = 1;
5118 ssid->export_keys = 1;
5119 if (params->psk_set) {
5120 os_memcpy(ssid->psk, params->psk, 32);
5121 ssid->psk_set = 1;
5122 }
5123 if (params->passphrase)
5124 ssid->passphrase = os_strdup(params->passphrase);
5125
5126 wpa_s->show_group_started = 1;
5127
5128 wpa_supplicant_select_network(wpa_s, ssid);
5129
5130 return 0;
5131 }
5132
5133
5134 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5135 struct wpa_ssid *ssid, int addr_allocated,
5136 int freq, int ht40, int vht,
5137 const struct p2p_channels *channels,
5138 int connection_timeout)
5139 {
5140 struct p2p_go_neg_results params;
5141 int go = 0;
5142
5143 if (ssid->disabled != 2 || ssid->ssid == NULL)
5144 return -1;
5145
5146 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5147 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5148 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5149 "already running");
5150 return 0;
5151 }
5152
5153 os_free(wpa_s->global->add_psk);
5154 wpa_s->global->add_psk = NULL;
5155
5156 /* Make sure we are not running find during connection establishment */
5157 wpas_p2p_stop_find_oper(wpa_s);
5158
5159 wpa_s->p2p_fallback_to_go_neg = 0;
5160
5161 if (ssid->mode == WPAS_MODE_INFRA)
5162 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
5163
5164 if (ssid->mode != WPAS_MODE_P2P_GO)
5165 return -1;
5166
5167 freq = wpas_p2p_select_go_freq(wpa_s, freq);
5168 if (freq < 0)
5169 return -1;
5170
5171 if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5172 return -1;
5173
5174 params.role_go = 1;
5175 params.psk_set = ssid->psk_set;
5176 if (params.psk_set)
5177 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5178 if (ssid->passphrase) {
5179 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5180 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5181 "persistent group");
5182 return -1;
5183 }
5184 os_strlcpy(params.passphrase, ssid->passphrase,
5185 sizeof(params.passphrase));
5186 }
5187 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5188 params.ssid_len = ssid->ssid_len;
5189 params.persistent_group = 1;
5190
5191 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5192 if (wpa_s == NULL)
5193 return -1;
5194
5195 wpa_s->p2p_first_connection_timeout = connection_timeout;
5196 wpas_start_wps_go(wpa_s, &params, 0);
5197
5198 return 0;
5199 }
5200
5201
5202 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5203 struct wpabuf *proberesp_ies)
5204 {
5205 struct wpa_supplicant *wpa_s = ctx;
5206 if (wpa_s->ap_iface) {
5207 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5208 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5209 wpabuf_free(beacon_ies);
5210 wpabuf_free(proberesp_ies);
5211 return;
5212 }
5213 if (beacon_ies) {
5214 wpabuf_free(hapd->p2p_beacon_ie);
5215 hapd->p2p_beacon_ie = beacon_ies;
5216 }
5217 wpabuf_free(hapd->p2p_probe_resp_ie);
5218 hapd->p2p_probe_resp_ie = proberesp_ies;
5219 } else {
5220 wpabuf_free(beacon_ies);
5221 wpabuf_free(proberesp_ies);
5222 }
5223 wpa_supplicant_ap_update_beacon(wpa_s);
5224 }
5225
5226
5227 static void wpas_p2p_idle_update(void *ctx, int idle)
5228 {
5229 struct wpa_supplicant *wpa_s = ctx;
5230 if (!wpa_s->ap_iface)
5231 return;
5232 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5233 if (idle) {
5234 if (wpa_s->global->p2p_fail_on_wps_complete &&
5235 wpa_s->p2p_in_provisioning) {
5236 wpas_p2p_grpform_fail_after_wps(wpa_s);
5237 return;
5238 }
5239 wpas_p2p_set_group_idle_timeout(wpa_s);
5240 } else
5241 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5242 }
5243
5244
5245 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5246 struct wpa_ssid *ssid)
5247 {
5248 struct p2p_group *group;
5249 struct p2p_group_config *cfg;
5250
5251 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5252 return NULL;
5253
5254 cfg = os_zalloc(sizeof(*cfg));
5255 if (cfg == NULL)
5256 return NULL;
5257
5258 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5259 cfg->persistent_group = 2;
5260 else if (ssid->p2p_persistent_group)
5261 cfg->persistent_group = 1;
5262 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5263 if (wpa_s->max_stations &&
5264 wpa_s->max_stations < wpa_s->conf->max_num_sta)
5265 cfg->max_clients = wpa_s->max_stations;
5266 else
5267 cfg->max_clients = wpa_s->conf->max_num_sta;
5268 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5269 cfg->ssid_len = ssid->ssid_len;
5270 cfg->freq = ssid->frequency;
5271 cfg->cb_ctx = wpa_s;
5272 cfg->ie_update = wpas_p2p_ie_update;
5273 cfg->idle_update = wpas_p2p_idle_update;
5274
5275 group = p2p_group_init(wpa_s->global->p2p, cfg);
5276 if (group == NULL)
5277 os_free(cfg);
5278 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5279 p2p_group_notif_formation_done(group);
5280 wpa_s->p2p_group = group;
5281 return group;
5282 }
5283
5284
5285 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5286 int registrar)
5287 {
5288 struct wpa_ssid *ssid = wpa_s->current_ssid;
5289
5290 if (!wpa_s->p2p_in_provisioning) {
5291 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5292 "provisioning not in progress");
5293 return;
5294 }
5295
5296 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5297 u8 go_dev_addr[ETH_ALEN];
5298 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5299 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5300 ssid->ssid_len);
5301 /* Clear any stored provisioning info */
5302 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5303 }
5304
5305 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5306 NULL);
5307 wpa_s->p2p_go_group_formation_completed = 1;
5308 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5309 /*
5310 * Use a separate timeout for initial data connection to
5311 * complete to allow the group to be removed automatically if
5312 * something goes wrong in this step before the P2P group idle
5313 * timeout mechanism is taken into use.
5314 */
5315 wpa_dbg(wpa_s, MSG_DEBUG,
5316 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5317 P2P_MAX_INITIAL_CONN_WAIT);
5318 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5319 wpas_p2p_group_formation_timeout,
5320 wpa_s->parent, NULL);
5321 } else if (ssid) {
5322 /*
5323 * Use a separate timeout for initial data connection to
5324 * complete to allow the group to be removed automatically if
5325 * the client does not complete data connection successfully.
5326 */
5327 wpa_dbg(wpa_s, MSG_DEBUG,
5328 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5329 P2P_MAX_INITIAL_CONN_WAIT_GO);
5330 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5331 wpas_p2p_group_formation_timeout,
5332 wpa_s->parent, NULL);
5333 /*
5334 * Complete group formation on first successful data connection
5335 */
5336 wpa_s->p2p_go_group_formation_completed = 0;
5337 }
5338 if (wpa_s->global->p2p)
5339 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5340 wpas_group_formation_completed(wpa_s, 1);
5341 }
5342
5343
5344 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5345 struct wps_event_fail *fail)
5346 {
5347 if (!wpa_s->p2p_in_provisioning) {
5348 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5349 "provisioning not in progress");
5350 return;
5351 }
5352
5353 if (wpa_s->go_params) {
5354 p2p_clear_provisioning_info(
5355 wpa_s->global->p2p,
5356 wpa_s->go_params->peer_device_addr);
5357 }
5358
5359 wpas_notify_p2p_wps_failed(wpa_s, fail);
5360
5361 if (wpa_s == wpa_s->global->p2p_group_formation) {
5362 /*
5363 * Allow some time for the failed WPS negotiation exchange to
5364 * complete, but remove the group since group formation cannot
5365 * succeed after provisioning failure.
5366 */
5367 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5368 wpa_s->global->p2p_fail_on_wps_complete = 1;
5369 eloop_deplete_timeout(0, 50000,
5370 wpas_p2p_group_formation_timeout,
5371 wpa_s->parent, NULL);
5372 }
5373 }
5374
5375
5376 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5377 {
5378 if (!wpa_s->global->p2p_fail_on_wps_complete ||
5379 !wpa_s->p2p_in_provisioning)
5380 return 0;
5381
5382 wpas_p2p_grpform_fail_after_wps(wpa_s);
5383
5384 return 1;
5385 }
5386
5387
5388 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5389 const char *config_method,
5390 enum wpas_p2p_prov_disc_use use)
5391 {
5392 u16 config_methods;
5393
5394 wpa_s->p2p_fallback_to_go_neg = 0;
5395 wpa_s->pending_pd_use = NORMAL_PD;
5396 if (os_strncmp(config_method, "display", 7) == 0)
5397 config_methods = WPS_CONFIG_DISPLAY;
5398 else if (os_strncmp(config_method, "keypad", 6) == 0)
5399 config_methods = WPS_CONFIG_KEYPAD;
5400 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5401 os_strncmp(config_method, "pushbutton", 10) == 0)
5402 config_methods = WPS_CONFIG_PUSHBUTTON;
5403 else {
5404 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5405 return -1;
5406 }
5407
5408 if (use == WPAS_P2P_PD_AUTO) {
5409 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5410 wpa_s->pending_pd_config_methods = config_methods;
5411 wpa_s->p2p_auto_pd = 1;
5412 wpa_s->p2p_auto_join = 0;
5413 wpa_s->pending_pd_before_join = 0;
5414 wpa_s->auto_pd_scan_retry = 0;
5415 wpas_p2p_stop_find(wpa_s);
5416 wpa_s->p2p_join_scan_count = 0;
5417 os_get_reltime(&wpa_s->p2p_auto_started);
5418 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5419 wpa_s->p2p_auto_started.sec,
5420 wpa_s->p2p_auto_started.usec);
5421 wpas_p2p_join_scan(wpa_s, NULL);
5422 return 0;
5423 }
5424
5425 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5426 return -1;
5427
5428 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5429 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5430 0, 1);
5431 }
5432
5433
5434 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5435 char *end)
5436 {
5437 return p2p_scan_result_text(ies, ies_len, buf, end);
5438 }
5439
5440
5441 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5442 {
5443 if (!offchannel_pending_action_tx(wpa_s))
5444 return;
5445
5446 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5447 "operation request");
5448 offchannel_clear_pending_action_tx(wpa_s);
5449 }
5450
5451
5452 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5453 enum p2p_discovery_type type,
5454 unsigned int num_req_dev_types, const u8 *req_dev_types,
5455 const u8 *dev_id, unsigned int search_delay)
5456 {
5457 wpas_p2p_clear_pending_action_tx(wpa_s);
5458 wpa_s->p2p_long_listen = 0;
5459
5460 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5461 wpa_s->p2p_in_provisioning)
5462 return -1;
5463
5464 wpa_supplicant_cancel_sched_scan(wpa_s);
5465
5466 return p2p_find(wpa_s->global->p2p, timeout, type,
5467 num_req_dev_types, req_dev_types, dev_id,
5468 search_delay);
5469 }
5470
5471
5472 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5473 {
5474 wpas_p2p_clear_pending_action_tx(wpa_s);
5475 wpa_s->p2p_long_listen = 0;
5476 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5477 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5478
5479 if (wpa_s->global->p2p)
5480 p2p_stop_find(wpa_s->global->p2p);
5481
5482 return 0;
5483 }
5484
5485
5486 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5487 {
5488 if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5489 return;
5490 wpas_p2p_remove_pending_group_interface(wpa_s);
5491 }
5492
5493
5494 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5495 {
5496 struct wpa_supplicant *wpa_s = eloop_ctx;
5497 wpa_s->p2p_long_listen = 0;
5498 }
5499
5500
5501 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5502 {
5503 int res;
5504
5505 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5506 return -1;
5507
5508 wpa_supplicant_cancel_sched_scan(wpa_s);
5509 wpas_p2p_clear_pending_action_tx(wpa_s);
5510
5511 if (timeout == 0) {
5512 /*
5513 * This is a request for unlimited Listen state. However, at
5514 * least for now, this is mapped to a Listen state for one
5515 * hour.
5516 */
5517 timeout = 3600;
5518 }
5519 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5520 wpa_s->p2p_long_listen = 0;
5521
5522 /*
5523 * Stop previous find/listen operation to avoid trying to request a new
5524 * remain-on-channel operation while the driver is still running the
5525 * previous one.
5526 */
5527 if (wpa_s->global->p2p)
5528 p2p_stop_find(wpa_s->global->p2p);
5529
5530 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5531 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5532 wpa_s->p2p_long_listen = timeout * 1000;
5533 eloop_register_timeout(timeout, 0,
5534 wpas_p2p_long_listen_timeout,
5535 wpa_s, NULL);
5536 }
5537
5538 return res;
5539 }
5540
5541
5542 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5543 u8 *buf, size_t len, int p2p_group)
5544 {
5545 struct wpabuf *p2p_ie;
5546 int ret;
5547
5548 if (wpa_s->global->p2p_disabled)
5549 return -1;
5550 if (wpa_s->global->p2p == NULL)
5551 return -1;
5552 if (bss == NULL)
5553 return -1;
5554
5555 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5556 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5557 p2p_group, p2p_ie);
5558 wpabuf_free(p2p_ie);
5559
5560 return ret;
5561 }
5562
5563
5564 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5565 const u8 *dst, const u8 *bssid,
5566 const u8 *ie, size_t ie_len, int ssi_signal)
5567 {
5568 if (wpa_s->global->p2p_disabled)
5569 return 0;
5570 if (wpa_s->global->p2p == NULL)
5571 return 0;
5572
5573 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5574 ie, ie_len)) {
5575 case P2P_PREQ_NOT_P2P:
5576 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5577 ssi_signal);
5578 /* fall through */
5579 case P2P_PREQ_MALFORMED:
5580 case P2P_PREQ_NOT_LISTEN:
5581 case P2P_PREQ_NOT_PROCESSED:
5582 default: /* make gcc happy */
5583 return 0;
5584 case P2P_PREQ_PROCESSED:
5585 return 1;
5586 }
5587 }
5588
5589
5590 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5591 const u8 *sa, const u8 *bssid,
5592 u8 category, const u8 *data, size_t len, int freq)
5593 {
5594 if (wpa_s->global->p2p_disabled)
5595 return;
5596 if (wpa_s->global->p2p == NULL)
5597 return;
5598
5599 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5600 freq);
5601 }
5602
5603
5604 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5605 {
5606 if (wpa_s->global->p2p_disabled)
5607 return;
5608 if (wpa_s->global->p2p == NULL)
5609 return;
5610
5611 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5612 }
5613
5614
5615 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5616 {
5617 p2p_group_deinit(wpa_s->p2p_group);
5618 wpa_s->p2p_group = NULL;
5619
5620 wpa_s->ap_configured_cb = NULL;
5621 wpa_s->ap_configured_cb_ctx = NULL;
5622 wpa_s->ap_configured_cb_data = NULL;
5623 wpa_s->connect_without_scan = NULL;
5624 }
5625
5626
5627 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5628 {
5629 wpa_s->p2p_long_listen = 0;
5630
5631 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5632 return -1;
5633
5634 return p2p_reject(wpa_s->global->p2p, addr);
5635 }
5636
5637
5638 /* Invite to reinvoke a persistent group */
5639 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5640 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5641 int ht40, int vht, int pref_freq)
5642 {
5643 enum p2p_invite_role role;
5644 u8 *bssid = NULL;
5645 int force_freq = 0;
5646 int res;
5647 int no_pref_freq_given = pref_freq == 0;
5648
5649 wpa_s->global->p2p_invite_group = NULL;
5650 if (peer_addr)
5651 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5652 else
5653 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5654
5655 wpa_s->p2p_persistent_go_freq = freq;
5656 wpa_s->p2p_go_ht40 = !!ht40;
5657 if (ssid->mode == WPAS_MODE_P2P_GO) {
5658 role = P2P_INVITE_ROLE_GO;
5659 if (peer_addr == NULL) {
5660 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5661 "address in invitation command");
5662 return -1;
5663 }
5664 if (wpas_p2p_create_iface(wpa_s)) {
5665 if (wpas_p2p_add_group_interface(wpa_s,
5666 WPA_IF_P2P_GO) < 0) {
5667 wpa_printf(MSG_ERROR, "P2P: Failed to "
5668 "allocate a new interface for the "
5669 "group");
5670 return -1;
5671 }
5672 bssid = wpa_s->pending_interface_addr;
5673 } else
5674 bssid = wpa_s->own_addr;
5675 } else {
5676 role = P2P_INVITE_ROLE_CLIENT;
5677 peer_addr = ssid->bssid;
5678 }
5679 wpa_s->pending_invite_ssid_id = ssid->id;
5680
5681 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5682 role == P2P_INVITE_ROLE_GO);
5683 if (res)
5684 return res;
5685
5686 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5687 return -1;
5688
5689 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5690 no_pref_freq_given && pref_freq > 0 &&
5691 wpa_s->num_multichan_concurrent > 1 &&
5692 wpas_p2p_num_unused_channels(wpa_s) > 0) {
5693 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5694 pref_freq);
5695 pref_freq = 0;
5696 }
5697
5698 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5699 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5700 1, pref_freq);
5701 }
5702
5703
5704 /* Invite to join an active group */
5705 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5706 const u8 *peer_addr, const u8 *go_dev_addr)
5707 {
5708 struct wpa_global *global = wpa_s->global;
5709 enum p2p_invite_role role;
5710 u8 *bssid = NULL;
5711 struct wpa_ssid *ssid;
5712 int persistent;
5713 int freq = 0, force_freq = 0, pref_freq = 0;
5714 int res;
5715
5716 wpa_s->p2p_persistent_go_freq = 0;
5717 wpa_s->p2p_go_ht40 = 0;
5718 wpa_s->p2p_go_vht = 0;
5719
5720 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5721 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5722 break;
5723 }
5724 if (wpa_s == NULL) {
5725 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5726 return -1;
5727 }
5728
5729 ssid = wpa_s->current_ssid;
5730 if (ssid == NULL) {
5731 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5732 "invitation");
5733 return -1;
5734 }
5735
5736 wpa_s->global->p2p_invite_group = wpa_s;
5737 persistent = ssid->p2p_persistent_group &&
5738 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5739 ssid->ssid, ssid->ssid_len);
5740
5741 if (ssid->mode == WPAS_MODE_P2P_GO) {
5742 role = P2P_INVITE_ROLE_ACTIVE_GO;
5743 bssid = wpa_s->own_addr;
5744 if (go_dev_addr == NULL)
5745 go_dev_addr = wpa_s->global->p2p_dev_addr;
5746 freq = ssid->frequency;
5747 } else {
5748 role = P2P_INVITE_ROLE_CLIENT;
5749 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5750 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5751 "invite to current group");
5752 return -1;
5753 }
5754 bssid = wpa_s->bssid;
5755 if (go_dev_addr == NULL &&
5756 !is_zero_ether_addr(wpa_s->go_dev_addr))
5757 go_dev_addr = wpa_s->go_dev_addr;
5758 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5759 (int) wpa_s->assoc_freq;
5760 }
5761 wpa_s->parent->pending_invite_ssid_id = -1;
5762
5763 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5764 return -1;
5765
5766 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5767 role == P2P_INVITE_ROLE_ACTIVE_GO);
5768 if (res)
5769 return res;
5770 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5771
5772 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5773 ssid->ssid, ssid->ssid_len, force_freq,
5774 go_dev_addr, persistent, pref_freq);
5775 }
5776
5777
5778 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5779 {
5780 struct wpa_ssid *ssid = wpa_s->current_ssid;
5781 const char *ssid_txt;
5782 u8 go_dev_addr[ETH_ALEN];
5783 int network_id = -1;
5784 int persistent;
5785 int freq;
5786 u8 ip[3 * 4];
5787 char ip_addr[100];
5788
5789 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5790 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5791 wpa_s->parent, NULL);
5792 }
5793
5794 if (!wpa_s->show_group_started || !ssid)
5795 return;
5796
5797 wpa_s->show_group_started = 0;
5798
5799 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5800 os_memset(go_dev_addr, 0, ETH_ALEN);
5801 if (ssid->bssid_set)
5802 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5803 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5804 ssid->ssid_len);
5805 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5806
5807 if (wpa_s->global->p2p_group_formation == wpa_s)
5808 wpa_s->global->p2p_group_formation = NULL;
5809
5810 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5811 (int) wpa_s->assoc_freq;
5812
5813 ip_addr[0] = '\0';
5814 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5815 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5816 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5817 ip[0], ip[1], ip[2], ip[3],
5818 ip[4], ip[5], ip[6], ip[7],
5819 ip[8], ip[9], ip[10], ip[11]);
5820 }
5821
5822 if (ssid->passphrase == NULL && ssid->psk_set) {
5823 char psk[65];
5824 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5825 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5826 "%s client ssid=\"%s\" freq=%d psk=%s "
5827 "go_dev_addr=" MACSTR "%s%s",
5828 wpa_s->ifname, ssid_txt, freq, psk,
5829 MAC2STR(go_dev_addr),
5830 persistent ? " [PERSISTENT]" : "", ip_addr);
5831 } else {
5832 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5833 "%s client ssid=\"%s\" freq=%d "
5834 "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5835 wpa_s->ifname, ssid_txt, freq,
5836 ssid->passphrase ? ssid->passphrase : "",
5837 MAC2STR(go_dev_addr),
5838 persistent ? " [PERSISTENT]" : "", ip_addr);
5839 }
5840
5841 if (persistent)
5842 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5843 ssid, go_dev_addr);
5844 if (network_id < 0)
5845 network_id = ssid->id;
5846 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5847 }
5848
5849
5850 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5851 u32 interval1, u32 duration2, u32 interval2)
5852 {
5853 int ret;
5854
5855 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5856 return -1;
5857
5858 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5859 wpa_s->current_ssid == NULL ||
5860 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5861 return -1;
5862
5863 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5864 wpa_s->own_addr, wpa_s->assoc_freq,
5865 duration1, interval1, duration2, interval2);
5866 if (ret == 0)
5867 wpa_s->waiting_presence_resp = 1;
5868
5869 return ret;
5870 }
5871
5872
5873 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5874 unsigned int interval)
5875 {
5876 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5877 return -1;
5878
5879 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5880 }
5881
5882
5883 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5884 {
5885 if (wpa_s->current_ssid == NULL) {
5886 /*
5887 * current_ssid can be cleared when P2P client interface gets
5888 * disconnected, so assume this interface was used as P2P
5889 * client.
5890 */
5891 return 1;
5892 }
5893 return wpa_s->current_ssid->p2p_group &&
5894 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5895 }
5896
5897
5898 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5899 {
5900 struct wpa_supplicant *wpa_s = eloop_ctx;
5901
5902 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5903 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5904 "disabled");
5905 return;
5906 }
5907
5908 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
5909 "group");
5910 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
5911 }
5912
5913
5914 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
5915 {
5916 int timeout;
5917
5918 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5919 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5920
5921 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5922 return;
5923
5924 timeout = wpa_s->conf->p2p_group_idle;
5925 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
5926 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
5927 timeout = P2P_MAX_CLIENT_IDLE;
5928
5929 if (timeout == 0)
5930 return;
5931
5932 if (timeout < 0) {
5933 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
5934 timeout = 0; /* special client mode no-timeout */
5935 else
5936 return;
5937 }
5938
5939 if (wpa_s->p2p_in_provisioning) {
5940 /*
5941 * Use the normal group formation timeout during the
5942 * provisioning phase to avoid terminating this process too
5943 * early due to group idle timeout.
5944 */
5945 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5946 "during provisioning");
5947 return;
5948 }
5949
5950 if (wpa_s->show_group_started) {
5951 /*
5952 * Use the normal group formation timeout between the end of
5953 * the provisioning phase and completion of 4-way handshake to
5954 * avoid terminating this process too early due to group idle
5955 * timeout.
5956 */
5957 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5958 "while waiting for initial 4-way handshake to "
5959 "complete");
5960 return;
5961 }
5962
5963 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
5964 timeout);
5965 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
5966 wpa_s, NULL);
5967 }
5968
5969
5970 /* Returns 1 if the interface was removed */
5971 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5972 u16 reason_code, const u8 *ie, size_t ie_len,
5973 int locally_generated)
5974 {
5975 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5976 return 0;
5977
5978 if (!locally_generated)
5979 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
5980 ie_len);
5981
5982 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
5983 wpa_s->current_ssid &&
5984 wpa_s->current_ssid->p2p_group &&
5985 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
5986 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
5987 "session is ending");
5988 if (wpas_p2p_group_delete(wpa_s,
5989 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
5990 > 0)
5991 return 1;
5992 }
5993
5994 return 0;
5995 }
5996
5997
5998 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5999 u16 reason_code, const u8 *ie, size_t ie_len,
6000 int locally_generated)
6001 {
6002 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6003 return;
6004
6005 if (!locally_generated)
6006 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6007 ie_len);
6008 }
6009
6010
6011 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6012 {
6013 struct p2p_data *p2p = wpa_s->global->p2p;
6014
6015 if (p2p == NULL)
6016 return;
6017
6018 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6019 return;
6020
6021 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6022 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6023
6024 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6025 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6026
6027 if (wpa_s->wps &&
6028 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6029 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6030
6031 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6032 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6033
6034 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6035 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6036 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6037 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6038 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6039 }
6040
6041 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6042 p2p_set_sec_dev_types(p2p,
6043 (void *) wpa_s->conf->sec_device_type,
6044 wpa_s->conf->num_sec_device_types);
6045
6046 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6047 int i;
6048 p2p_remove_wps_vendor_extensions(p2p);
6049 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6050 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6051 continue;
6052 p2p_add_wps_vendor_extension(
6053 p2p, wpa_s->conf->wps_vendor_ext[i]);
6054 }
6055 }
6056
6057 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6058 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6059 char country[3];
6060 country[0] = wpa_s->conf->country[0];
6061 country[1] = wpa_s->conf->country[1];
6062 country[2] = 0x04;
6063 p2p_set_country(p2p, country);
6064 }
6065
6066 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6067 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6068 wpa_s->conf->p2p_ssid_postfix ?
6069 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6070 0);
6071 }
6072
6073 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6074 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6075
6076 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6077 u8 reg_class, channel;
6078 int ret;
6079 unsigned int r;
6080 if (wpa_s->conf->p2p_listen_reg_class &&
6081 wpa_s->conf->p2p_listen_channel) {
6082 reg_class = wpa_s->conf->p2p_listen_reg_class;
6083 channel = wpa_s->conf->p2p_listen_channel;
6084 } else {
6085 reg_class = 81;
6086 /*
6087 * Pick one of the social channels randomly as the
6088 * listen channel.
6089 */
6090 os_get_random((u8 *) &r, sizeof(r));
6091 channel = 1 + (r % 3) * 5;
6092 }
6093 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6094 if (ret)
6095 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6096 "failed: %d", ret);
6097 }
6098 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6099 u8 op_reg_class, op_channel, cfg_op_channel;
6100 int ret = 0;
6101 unsigned int r;
6102 if (wpa_s->conf->p2p_oper_reg_class &&
6103 wpa_s->conf->p2p_oper_channel) {
6104 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6105 op_channel = wpa_s->conf->p2p_oper_channel;
6106 cfg_op_channel = 1;
6107 } else {
6108 op_reg_class = 81;
6109 /*
6110 * Use random operation channel from (1, 6, 11)
6111 *if no other preference is indicated.
6112 */
6113 os_get_random((u8 *) &r, sizeof(r));
6114 op_channel = 1 + (r % 3) * 5;
6115 cfg_op_channel = 0;
6116 }
6117 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6118 cfg_op_channel);
6119 if (ret)
6120 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6121 "failed: %d", ret);
6122 }
6123
6124 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6125 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6126 wpa_s->conf->p2p_pref_chan) < 0) {
6127 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6128 "update failed");
6129 }
6130
6131 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6132 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6133 "update failed");
6134 }
6135 }
6136 }
6137
6138
6139 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6140 int duration)
6141 {
6142 if (!wpa_s->ap_iface)
6143 return -1;
6144 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6145 duration);
6146 }
6147
6148
6149 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6150 {
6151 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6152 return -1;
6153
6154 wpa_s->global->cross_connection = enabled;
6155 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6156
6157 if (!enabled) {
6158 struct wpa_supplicant *iface;
6159
6160 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6161 {
6162 if (iface->cross_connect_enabled == 0)
6163 continue;
6164
6165 iface->cross_connect_enabled = 0;
6166 iface->cross_connect_in_use = 0;
6167 wpa_msg_global(iface->parent, MSG_INFO,
6168 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6169 iface->ifname,
6170 iface->cross_connect_uplink);
6171 }
6172 }
6173
6174 return 0;
6175 }
6176
6177
6178 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6179 {
6180 struct wpa_supplicant *iface;
6181
6182 if (!uplink->global->cross_connection)
6183 return;
6184
6185 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6186 if (!iface->cross_connect_enabled)
6187 continue;
6188 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6189 0)
6190 continue;
6191 if (iface->ap_iface == NULL)
6192 continue;
6193 if (iface->cross_connect_in_use)
6194 continue;
6195
6196 iface->cross_connect_in_use = 1;
6197 wpa_msg_global(iface->parent, MSG_INFO,
6198 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6199 iface->ifname, iface->cross_connect_uplink);
6200 }
6201 }
6202
6203
6204 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6205 {
6206 struct wpa_supplicant *iface;
6207
6208 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6209 if (!iface->cross_connect_enabled)
6210 continue;
6211 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6212 0)
6213 continue;
6214 if (!iface->cross_connect_in_use)
6215 continue;
6216
6217 wpa_msg_global(iface->parent, MSG_INFO,
6218 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6219 iface->ifname, iface->cross_connect_uplink);
6220 iface->cross_connect_in_use = 0;
6221 }
6222 }
6223
6224
6225 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6226 {
6227 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6228 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6229 wpa_s->cross_connect_disallowed)
6230 wpas_p2p_disable_cross_connect(wpa_s);
6231 else
6232 wpas_p2p_enable_cross_connect(wpa_s);
6233 if (!wpa_s->ap_iface &&
6234 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6235 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6236 }
6237
6238
6239 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6240 {
6241 wpas_p2p_disable_cross_connect(wpa_s);
6242 if (!wpa_s->ap_iface &&
6243 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6244 wpa_s, NULL))
6245 wpas_p2p_set_group_idle_timeout(wpa_s);
6246 }
6247
6248
6249 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6250 {
6251 struct wpa_supplicant *iface;
6252
6253 if (!wpa_s->global->cross_connection)
6254 return;
6255
6256 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6257 if (iface == wpa_s)
6258 continue;
6259 if (iface->drv_flags &
6260 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6261 continue;
6262 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6263 continue;
6264
6265 wpa_s->cross_connect_enabled = 1;
6266 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6267 sizeof(wpa_s->cross_connect_uplink));
6268 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6269 "%s to %s whenever uplink is available",
6270 wpa_s->ifname, wpa_s->cross_connect_uplink);
6271
6272 if (iface->ap_iface || iface->current_ssid == NULL ||
6273 iface->current_ssid->mode != WPAS_MODE_INFRA ||
6274 iface->cross_connect_disallowed ||
6275 iface->wpa_state != WPA_COMPLETED)
6276 break;
6277
6278 wpa_s->cross_connect_in_use = 1;
6279 wpa_msg_global(wpa_s->parent, MSG_INFO,
6280 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6281 wpa_s->ifname, wpa_s->cross_connect_uplink);
6282 break;
6283 }
6284 }
6285
6286
6287 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6288 {
6289 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6290 !wpa_s->p2p_in_provisioning)
6291 return 0; /* not P2P client operation */
6292
6293 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6294 "session overlap");
6295 if (wpa_s != wpa_s->parent)
6296 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6297 wpas_p2p_group_formation_failed(wpa_s);
6298 return 1;
6299 }
6300
6301
6302 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6303 {
6304 struct p2p_channels chan, cli_chan;
6305
6306 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6307 return;
6308
6309 os_memset(&chan, 0, sizeof(chan));
6310 os_memset(&cli_chan, 0, sizeof(cli_chan));
6311 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6312 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6313 "channel list");
6314 return;
6315 }
6316
6317 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6318 }
6319
6320
6321 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6322 struct wpa_scan_results *scan_res)
6323 {
6324 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6325 }
6326
6327
6328 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6329 {
6330 struct wpa_global *global = wpa_s->global;
6331 int found = 0;
6332 const u8 *peer;
6333
6334 if (global->p2p == NULL)
6335 return -1;
6336
6337 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6338
6339 if (wpa_s->pending_interface_name[0] &&
6340 !is_zero_ether_addr(wpa_s->pending_interface_addr))
6341 found = 1;
6342
6343 peer = p2p_get_go_neg_peer(global->p2p);
6344 if (peer) {
6345 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6346 MACSTR, MAC2STR(peer));
6347 p2p_unauthorize(global->p2p, peer);
6348 found = 1;
6349 }
6350
6351 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6352 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6353 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6354 found = 1;
6355 }
6356
6357 if (wpa_s->pending_pd_before_join) {
6358 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6359 wpa_s->pending_pd_before_join = 0;
6360 found = 1;
6361 }
6362
6363 wpas_p2p_stop_find(wpa_s);
6364
6365 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6366 if (wpa_s == global->p2p_group_formation &&
6367 (wpa_s->p2p_in_provisioning ||
6368 wpa_s->parent->pending_interface_type ==
6369 WPA_IF_P2P_CLIENT)) {
6370 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6371 "formation found - cancelling",
6372 wpa_s->ifname);
6373 found = 1;
6374 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6375 wpa_s->parent, NULL);
6376 if (wpa_s->p2p_in_provisioning) {
6377 wpas_group_formation_completed(wpa_s, 0);
6378 break;
6379 }
6380 wpas_p2p_group_delete(wpa_s,
6381 P2P_GROUP_REMOVAL_REQUESTED);
6382 break;
6383 }
6384 }
6385
6386 if (!found) {
6387 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6388 return -1;
6389 }
6390
6391 return 0;
6392 }
6393
6394
6395 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6396 {
6397 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6398 return;
6399
6400 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6401 "being available anymore");
6402 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6403 }
6404
6405
6406 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6407 int freq_24, int freq_5, int freq_overall)
6408 {
6409 struct p2p_data *p2p = wpa_s->global->p2p;
6410 if (p2p == NULL)
6411 return;
6412 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6413 }
6414
6415
6416 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6417 {
6418 u8 peer[ETH_ALEN];
6419 struct p2p_data *p2p = wpa_s->global->p2p;
6420
6421 if (p2p == NULL)
6422 return -1;
6423
6424 if (hwaddr_aton(addr, peer))
6425 return -1;
6426
6427 return p2p_unauthorize(p2p, peer);
6428 }
6429
6430
6431 /**
6432 * wpas_p2p_disconnect - Disconnect from a P2P Group
6433 * @wpa_s: Pointer to wpa_supplicant data
6434 * Returns: 0 on success, -1 on failure
6435 *
6436 * This can be used to disconnect from a group in which the local end is a P2P
6437 * Client or to end a P2P Group in case the local end is the Group Owner. If a
6438 * virtual network interface was created for this group, that interface will be
6439 * removed. Otherwise, only the configured P2P group network will be removed
6440 * from the interface.
6441 */
6442 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6443 {
6444
6445 if (wpa_s == NULL)
6446 return -1;
6447
6448 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6449 -1 : 0;
6450 }
6451
6452
6453 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6454 {
6455 int ret;
6456
6457 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6458 return 0;
6459
6460 ret = p2p_in_progress(wpa_s->global->p2p);
6461 if (ret == 0) {
6462 /*
6463 * Check whether there is an ongoing WPS provisioning step (or
6464 * other parts of group formation) on another interface since
6465 * p2p_in_progress() does not report this to avoid issues for
6466 * scans during such provisioning step.
6467 */
6468 if (wpa_s->global->p2p_group_formation &&
6469 wpa_s->global->p2p_group_formation != wpa_s) {
6470 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6471 "in group formation",
6472 wpa_s->global->p2p_group_formation->ifname);
6473 ret = 1;
6474 }
6475 }
6476
6477 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6478 struct os_reltime now;
6479 os_get_reltime(&now);
6480 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6481 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6482 /* Wait for the first client has expired */
6483 wpa_s->global->p2p_go_wait_client.sec = 0;
6484 } else {
6485 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6486 ret = 1;
6487 }
6488 }
6489
6490 return ret;
6491 }
6492
6493
6494 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6495 struct wpa_ssid *ssid)
6496 {
6497 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6498 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6499 wpa_s->parent, NULL) > 0) {
6500 /**
6501 * Remove the network by scheduling the group formation
6502 * timeout to happen immediately. The teardown code
6503 * needs to be scheduled to run asynch later so that we
6504 * don't delete data from under ourselves unexpectedly.
6505 * Calling wpas_p2p_group_formation_timeout directly
6506 * causes a series of crashes in WPS failure scenarios.
6507 */
6508 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6509 "P2P group network getting removed");
6510 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6511 wpa_s->parent, NULL);
6512 }
6513 }
6514
6515
6516 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6517 const u8 *addr, const u8 *ssid,
6518 size_t ssid_len)
6519 {
6520 struct wpa_ssid *s;
6521 size_t i;
6522
6523 for (s = wpa_s->conf->ssid; s; s = s->next) {
6524 if (s->disabled != 2)
6525 continue;
6526 if (ssid &&
6527 (ssid_len != s->ssid_len ||
6528 os_memcmp(ssid, s->ssid, ssid_len) != 0))
6529 continue;
6530 if (addr == NULL) {
6531 if (s->mode == WPAS_MODE_P2P_GO)
6532 return s;
6533 continue;
6534 }
6535 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6536 return s; /* peer is GO in the persistent group */
6537 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6538 continue;
6539 for (i = 0; i < s->num_p2p_clients; i++) {
6540 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6541 addr, ETH_ALEN) == 0)
6542 return s; /* peer is P2P client in persistent
6543 * group */
6544 }
6545 }
6546
6547 return NULL;
6548 }
6549
6550
6551 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6552 const u8 *addr)
6553 {
6554 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6555 wpa_s->parent, NULL) > 0) {
6556 /*
6557 * This can happen if WPS provisioning step is not terminated
6558 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6559 * peer was able to connect, there is no need to time out group
6560 * formation after this, though. In addition, this is used with
6561 * the initial connection wait on the GO as a separate formation
6562 * timeout and as such, expected to be hit after the initial WPS
6563 * provisioning step.
6564 */
6565 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6566 }
6567 if (!wpa_s->p2p_go_group_formation_completed) {
6568 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6569 wpa_s->p2p_go_group_formation_completed = 1;
6570 wpa_s->global->p2p_group_formation = NULL;
6571 wpa_s->p2p_in_provisioning = 0;
6572 }
6573 wpa_s->global->p2p_go_wait_client.sec = 0;
6574 if (addr == NULL)
6575 return;
6576 wpas_p2p_add_persistent_group_client(wpa_s, addr);
6577 }
6578
6579
6580 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6581 int group_added)
6582 {
6583 struct wpa_supplicant *group = wpa_s;
6584 if (wpa_s->global->p2p_group_formation)
6585 group = wpa_s->global->p2p_group_formation;
6586 wpa_s = wpa_s->parent;
6587 offchannel_send_action_done(wpa_s);
6588 if (group_added)
6589 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6590 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6591 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6592 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6593 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6594 wpa_s->p2p_persistent_id,
6595 wpa_s->p2p_pd_before_go_neg,
6596 wpa_s->p2p_go_ht40,
6597 wpa_s->p2p_go_vht);
6598 }
6599
6600
6601 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6602 {
6603 if (!wpa_s->p2p_fallback_to_go_neg ||
6604 wpa_s->p2p_in_provisioning <= 5)
6605 return 0;
6606
6607 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6608 return 0; /* peer operating as a GO */
6609
6610 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6611 "fallback to GO Negotiation");
6612 wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6613
6614 return 1;
6615 }
6616
6617
6618 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6619 {
6620 struct wpa_supplicant *ifs;
6621
6622 if (wpa_s->wpa_state > WPA_SCANNING) {
6623 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6624 "concurrent operation",
6625 P2P_CONCURRENT_SEARCH_DELAY);
6626 return P2P_CONCURRENT_SEARCH_DELAY;
6627 }
6628
6629 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6630 radio_list) {
6631 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6632 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6633 "delay due to concurrent operation on "
6634 "interface %s",
6635 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6636 return P2P_CONCURRENT_SEARCH_DELAY;
6637 }
6638 }
6639
6640 return 0;
6641 }
6642
6643
6644 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6645 struct wpa_ssid *s, const u8 *addr,
6646 int iface_addr)
6647 {
6648 struct psk_list_entry *psk, *tmp;
6649 int changed = 0;
6650
6651 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6652 list) {
6653 if ((iface_addr && !psk->p2p &&
6654 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6655 (!iface_addr && psk->p2p &&
6656 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6657 wpa_dbg(wpa_s, MSG_DEBUG,
6658 "P2P: Remove persistent group PSK list entry for "
6659 MACSTR " p2p=%u",
6660 MAC2STR(psk->addr), psk->p2p);
6661 dl_list_del(&psk->list);
6662 os_free(psk);
6663 changed++;
6664 }
6665 }
6666
6667 return changed;
6668 }
6669
6670
6671 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6672 const u8 *p2p_dev_addr,
6673 const u8 *psk, size_t psk_len)
6674 {
6675 struct wpa_ssid *ssid = wpa_s->current_ssid;
6676 struct wpa_ssid *persistent;
6677 struct psk_list_entry *p;
6678
6679 if (psk_len != sizeof(p->psk))
6680 return;
6681
6682 if (p2p_dev_addr) {
6683 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6684 " p2p_dev_addr=" MACSTR,
6685 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6686 if (is_zero_ether_addr(p2p_dev_addr))
6687 p2p_dev_addr = NULL;
6688 } else {
6689 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6690 MAC2STR(mac_addr));
6691 }
6692
6693 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6694 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6695 /* To be added to persistent group once created */
6696 if (wpa_s->global->add_psk == NULL) {
6697 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6698 if (wpa_s->global->add_psk == NULL)
6699 return;
6700 }
6701 p = wpa_s->global->add_psk;
6702 if (p2p_dev_addr) {
6703 p->p2p = 1;
6704 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6705 } else {
6706 p->p2p = 0;
6707 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6708 }
6709 os_memcpy(p->psk, psk, psk_len);
6710 return;
6711 }
6712
6713 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6714 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6715 return;
6716 }
6717
6718 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6719 ssid->ssid_len);
6720 if (!persistent) {
6721 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6722 return;
6723 }
6724
6725 p = os_zalloc(sizeof(*p));
6726 if (p == NULL)
6727 return;
6728 if (p2p_dev_addr) {
6729 p->p2p = 1;
6730 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6731 } else {
6732 p->p2p = 0;
6733 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6734 }
6735 os_memcpy(p->psk, psk, psk_len);
6736
6737 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS) {
6738 struct psk_list_entry *last;
6739 last = dl_list_last(&persistent->psk_list,
6740 struct psk_list_entry, list);
6741 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6742 MACSTR " (p2p=%u) to make room for a new one",
6743 MAC2STR(last->addr), last->p2p);
6744 dl_list_del(&last->list);
6745 os_free(last);
6746 }
6747
6748 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6749 p2p_dev_addr ? p2p_dev_addr : mac_addr,
6750 p2p_dev_addr == NULL);
6751 if (p2p_dev_addr) {
6752 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6753 MACSTR, MAC2STR(p2p_dev_addr));
6754 } else {
6755 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6756 MAC2STR(mac_addr));
6757 }
6758 dl_list_add(&persistent->psk_list, &p->list);
6759
6760 #ifndef CONFIG_NO_CONFIG_WRITE
6761 if (wpa_s->parent->conf->update_config &&
6762 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6763 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6764 #endif /* CONFIG_NO_CONFIG_WRITE */
6765 }
6766
6767
6768 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6769 struct wpa_ssid *s, const u8 *addr,
6770 int iface_addr)
6771 {
6772 int res;
6773
6774 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6775 if (res > 0) {
6776 #ifndef CONFIG_NO_CONFIG_WRITE
6777 if (wpa_s->conf->update_config &&
6778 wpa_config_write(wpa_s->confname, wpa_s->conf))
6779 wpa_dbg(wpa_s, MSG_DEBUG,
6780 "P2P: Failed to update configuration");
6781 #endif /* CONFIG_NO_CONFIG_WRITE */
6782 }
6783 }
6784
6785
6786 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6787 const u8 *peer, int iface_addr)
6788 {
6789 struct hostapd_data *hapd;
6790 struct hostapd_wpa_psk *psk, *prev, *rem;
6791 struct sta_info *sta;
6792
6793 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6794 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6795 return;
6796
6797 /* Remove per-station PSK entry */
6798 hapd = wpa_s->ap_iface->bss[0];
6799 prev = NULL;
6800 psk = hapd->conf->ssid.wpa_psk;
6801 while (psk) {
6802 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6803 (!iface_addr &&
6804 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6805 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6806 MACSTR " iface_addr=%d",
6807 MAC2STR(peer), iface_addr);
6808 if (prev)
6809 prev->next = psk->next;
6810 else
6811 hapd->conf->ssid.wpa_psk = psk->next;
6812 rem = psk;
6813 psk = psk->next;
6814 os_free(rem);
6815 } else {
6816 prev = psk;
6817 psk = psk->next;
6818 }
6819 }
6820
6821 /* Disconnect from group */
6822 if (iface_addr)
6823 sta = ap_get_sta(hapd, peer);
6824 else
6825 sta = ap_get_sta_p2p(hapd, peer);
6826 if (sta) {
6827 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6828 " (iface_addr=%d) from group",
6829 MAC2STR(peer), iface_addr);
6830 hostapd_drv_sta_deauth(hapd, sta->addr,
6831 WLAN_REASON_DEAUTH_LEAVING);
6832 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6833 }
6834 }
6835
6836
6837 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6838 int iface_addr)
6839 {
6840 struct wpa_ssid *s;
6841 struct wpa_supplicant *w;
6842
6843 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6844
6845 /* Remove from any persistent group */
6846 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6847 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6848 continue;
6849 if (!iface_addr)
6850 wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6851 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6852 }
6853
6854 /* Remove from any operating group */
6855 for (w = wpa_s->global->ifaces; w; w = w->next)
6856 wpas_p2p_remove_client_go(w, peer, iface_addr);
6857 }
6858
6859
6860 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6861 {
6862 struct wpa_supplicant *wpa_s = eloop_ctx;
6863 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6864 }
6865
6866
6867 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
6868 {
6869 struct wpa_supplicant *wpa_s = eloop_ctx;
6870
6871 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
6872 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
6873 }
6874
6875
6876 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
6877 struct wpa_ssid *ssid)
6878 {
6879 struct wpa_supplicant *iface;
6880
6881 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6882 if (!iface->current_ssid ||
6883 iface->current_ssid->frequency == freq ||
6884 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
6885 !iface->current_ssid->p2p_group))
6886 continue;
6887
6888 /* Remove the connection with least priority */
6889 if (!wpas_is_p2p_prioritized(iface)) {
6890 /* STA connection has priority over existing
6891 * P2P connection, so remove the interface. */
6892 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
6893 eloop_register_timeout(0, 0,
6894 wpas_p2p_group_freq_conflict,
6895 iface, NULL);
6896 /* If connection in progress is P2P connection, do not
6897 * proceed for the connection. */
6898 if (wpa_s == iface)
6899 return -1;
6900 else
6901 return 0;
6902 } else {
6903 /* P2P connection has priority, disable the STA network
6904 */
6905 wpa_supplicant_disable_network(wpa_s->global->ifaces,
6906 ssid);
6907 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
6908 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
6909 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
6910 ETH_ALEN);
6911 /* If P2P connection is in progress, continue
6912 * connecting...*/
6913 if (wpa_s == iface)
6914 return 0;
6915 else
6916 return -1;
6917 }
6918 }
6919
6920 return 0;
6921 }
6922
6923
6924 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
6925 {
6926 struct wpa_ssid *ssid = wpa_s->current_ssid;
6927
6928 if (ssid == NULL || !ssid->p2p_group)
6929 return 0;
6930
6931 if (wpa_s->p2p_last_4way_hs_fail &&
6932 wpa_s->p2p_last_4way_hs_fail == ssid) {
6933 u8 go_dev_addr[ETH_ALEN];
6934 struct wpa_ssid *persistent;
6935
6936 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
6937 ssid->ssid,
6938 ssid->ssid_len) <= 0) {
6939 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
6940 goto disconnect;
6941 }
6942
6943 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
6944 MACSTR, MAC2STR(go_dev_addr));
6945 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
6946 ssid->ssid,
6947 ssid->ssid_len);
6948 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
6949 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
6950 goto disconnect;
6951 }
6952 wpa_msg_global(wpa_s->parent, MSG_INFO,
6953 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
6954 persistent->id);
6955 disconnect:
6956 wpa_s->p2p_last_4way_hs_fail = NULL;
6957 /*
6958 * Remove the group from a timeout to avoid issues with caller
6959 * continuing to use the interface if this is on a P2P group
6960 * interface.
6961 */
6962 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
6963 wpa_s, NULL);
6964 return 1;
6965 }
6966
6967 wpa_s->p2p_last_4way_hs_fail = ssid;
6968 return 0;
6969 }
6970
6971
6972 #ifdef CONFIG_WPS_NFC
6973
6974 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
6975 struct wpabuf *p2p)
6976 {
6977 struct wpabuf *ret;
6978
6979 if (wsc == NULL) {
6980 wpabuf_free(p2p);
6981 return NULL;
6982 }
6983
6984 if (p2p == NULL) {
6985 wpabuf_free(wsc);
6986 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
6987 return NULL;
6988 }
6989
6990 ret = wpabuf_alloc(2 + wpabuf_len(wsc) + 2 + wpabuf_len(p2p));
6991 if (ret == NULL) {
6992 wpabuf_free(wsc);
6993 wpabuf_free(p2p);
6994 return NULL;
6995 }
6996
6997 wpabuf_put_be16(ret, wpabuf_len(wsc));
6998 wpabuf_put_buf(ret, wsc);
6999 wpabuf_put_be16(ret, wpabuf_len(p2p));
7000 wpabuf_put_buf(ret, p2p);
7001
7002 wpabuf_free(wsc);
7003 wpabuf_free(p2p);
7004 wpa_hexdump_buf(MSG_DEBUG,
7005 "P2P: Generated NFC connection handover message", ret);
7006
7007 if (ndef && ret) {
7008 struct wpabuf *tmp;
7009 tmp = ndef_build_p2p(ret);
7010 wpabuf_free(ret);
7011 if (tmp == NULL) {
7012 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7013 return NULL;
7014 }
7015 ret = tmp;
7016 }
7017
7018 return ret;
7019 }
7020
7021
7022 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7023 int ndef)
7024 {
7025 struct wpabuf *wsc, *p2p;
7026
7027 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7028 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7029 return NULL;
7030 }
7031
7032 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7033 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7034 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7035 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7036 return NULL;
7037 }
7038
7039 wsc = wps_build_nfc_handover_req_p2p(wpa_s->parent->wps,
7040 wpa_s->conf->wps_nfc_dh_pubkey);
7041 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p);
7042
7043 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7044 }
7045
7046
7047 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7048 int ndef, int tag)
7049 {
7050 struct wpabuf *wsc, *p2p;
7051
7052 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7053 return NULL;
7054
7055 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7056 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7057 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7058 return NULL;
7059
7060 wsc = wps_build_nfc_handover_sel_p2p(wpa_s->parent->wps,
7061 tag ?
7062 wpa_s->conf->wps_nfc_dev_pw_id :
7063 DEV_PW_NFC_CONNECTION_HANDOVER,
7064 wpa_s->conf->wps_nfc_dh_pubkey,
7065 tag ? wpa_s->conf->wps_nfc_dev_pw :
7066 NULL);
7067 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p);
7068
7069 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7070 }
7071
7072
7073 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7074 struct p2p_nfc_params *params)
7075 {
7076 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7077 "connection handover");
7078 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7079 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7080 0, -1, 0, 1, 1);
7081 }
7082
7083
7084 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7085 struct p2p_nfc_params *params)
7086 {
7087 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7088 "connection handover");
7089 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7090 struct wpa_ssid *ssid = wpa_s->current_ssid;
7091 if (ssid == NULL)
7092 continue;
7093 if (ssid->mode != WPAS_MODE_P2P_GO)
7094 continue;
7095 if (wpa_s->ap_iface == NULL)
7096 continue;
7097 break;
7098 }
7099 if (wpa_s == NULL) {
7100 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7101 return -1;
7102 }
7103
7104 if (wpa_s->parent->p2p_oob_dev_pw_id !=
7105 DEV_PW_NFC_CONNECTION_HANDOVER &&
7106 !wpa_s->parent->p2p_oob_dev_pw) {
7107 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7108 return -1;
7109 }
7110 return wpas_ap_wps_add_nfc_pw(
7111 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7112 wpa_s->parent->p2p_oob_dev_pw,
7113 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7114 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7115 }
7116
7117
7118 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7119 struct p2p_nfc_params *params)
7120 {
7121 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7122 "connection handover");
7123 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7124 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7125 0, -1, 0, 1, 1);
7126 }
7127
7128
7129 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7130 struct p2p_nfc_params *params)
7131 {
7132 int res;
7133
7134 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7135 "connection handover");
7136 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7137 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7138 0, -1, 0, 1, 1);
7139 if (res)
7140 return res;
7141
7142 res = wpas_p2p_listen(wpa_s, 60);
7143 if (res) {
7144 p2p_unauthorize(wpa_s->global->p2p,
7145 params->peer->p2p_device_addr);
7146 }
7147
7148 return res;
7149 }
7150
7151
7152 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7153 const struct wpabuf *data,
7154 int sel, int tag)
7155 {
7156 const u8 *pos, *end;
7157 u16 len, id;
7158 struct p2p_nfc_params params;
7159 int res;
7160
7161 os_memset(&params, 0, sizeof(params));
7162 params.sel = sel;
7163
7164 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7165
7166 pos = wpabuf_head(data);
7167 end = pos + wpabuf_len(data);
7168
7169 if (end - pos < 2) {
7170 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7171 "attributes");
7172 return -1;
7173 }
7174 len = WPA_GET_BE16(pos);
7175 pos += 2;
7176 if (pos + len > end) {
7177 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7178 "attributes");
7179 return -1;
7180 }
7181 params.wsc_attr = pos;
7182 params.wsc_len = len;
7183 pos += len;
7184
7185 if (end - pos < 2) {
7186 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7187 "attributes");
7188 return -1;
7189 }
7190 len = WPA_GET_BE16(pos);
7191 pos += 2;
7192 if (pos + len > end) {
7193 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7194 "attributes");
7195 return -1;
7196 }
7197 params.p2p_attr = pos;
7198 params.p2p_len = len;
7199 pos += len;
7200
7201 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7202 params.wsc_attr, params.wsc_len);
7203 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7204 params.p2p_attr, params.p2p_len);
7205 if (pos < end) {
7206 wpa_hexdump(MSG_DEBUG,
7207 "P2P: Ignored extra data after P2P attributes",
7208 pos, end - pos);
7209 }
7210
7211 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7212 if (res)
7213 return res;
7214
7215 wpabuf_free(wpa_s->p2p_oob_dev_pw);
7216 wpa_s->p2p_oob_dev_pw = NULL;
7217
7218 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7219 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7220 "received");
7221 return -1;
7222 }
7223
7224 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7225 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7226 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7227 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7228 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7229 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7230 wpa_s->p2p_peer_oob_pk_hash_known = 1;
7231
7232 if (tag) {
7233 if (id < 0x10) {
7234 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7235 "peer OOB Device Password Id %u", id);
7236 return -1;
7237 }
7238 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7239 "Device Password Id %u", id);
7240 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7241 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7242 params.oob_dev_pw_len -
7243 WPS_OOB_PUBKEY_HASH_LEN - 2);
7244 wpa_s->p2p_oob_dev_pw_id = id;
7245 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7246 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7247 params.oob_dev_pw_len -
7248 WPS_OOB_PUBKEY_HASH_LEN - 2);
7249 if (wpa_s->p2p_oob_dev_pw == NULL)
7250 return -1;
7251
7252 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7253 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7254 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7255 return -1;
7256 } else {
7257 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7258 "without Device Password");
7259 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7260 }
7261
7262 switch (params.next_step) {
7263 case NO_ACTION:
7264 return 0;
7265 case JOIN_GROUP:
7266 return wpas_p2p_nfc_join_group(wpa_s, &params);
7267 case AUTH_JOIN:
7268 return wpas_p2p_nfc_auth_join(wpa_s, &params);
7269 case INIT_GO_NEG:
7270 return wpas_p2p_nfc_init_go_neg(wpa_s, &params);
7271 case RESP_GO_NEG:
7272 /* TODO: use own OOB Dev Pw */
7273 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params);
7274 }
7275
7276 return -1;
7277 }
7278
7279
7280 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7281 const struct wpabuf *data)
7282 {
7283 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7284 return -1;
7285
7286 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1);
7287 }
7288
7289
7290 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7291 const struct wpabuf *req,
7292 const struct wpabuf *sel)
7293 {
7294 struct wpabuf *tmp;
7295 int ret;
7296
7297 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7298 return -1;
7299
7300 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7301
7302 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7303 wpabuf_head(req), wpabuf_len(req));
7304 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7305 wpabuf_head(sel), wpabuf_len(sel));
7306 tmp = ndef_parse_p2p(init ? sel : req);
7307 if (tmp == NULL) {
7308 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7309 return -1;
7310 }
7311
7312 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0);
7313 wpabuf_free(tmp);
7314
7315 return ret;
7316 }
7317
7318
7319 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7320 {
7321 const u8 *if_addr;
7322 int go_intent = wpa_s->conf->p2p_go_intent;
7323
7324 if (wpa_s->global->p2p == NULL)
7325 return -1;
7326
7327 if (!enabled) {
7328 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7329 0, NULL);
7330 if (wpa_s->p2p_nfc_tag_enabled)
7331 wpas_p2p_remove_pending_group_interface(wpa_s);
7332 wpa_s->p2p_nfc_tag_enabled = 0;
7333 return 0;
7334 }
7335
7336 if (wpa_s->global->p2p_disabled)
7337 return -1;
7338
7339 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7340 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7341 wpa_s->conf->wps_nfc_dev_pw == NULL ||
7342 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7343 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7344 "to allow static handover cases");
7345 return -1;
7346 }
7347
7348 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7349 wpabuf_free(wpa_s->p2p_oob_dev_pw);
7350 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7351 if (wpa_s->p2p_oob_dev_pw == NULL)
7352 return -1;
7353 wpa_s->p2p_peer_oob_pk_hash_known = 0;
7354
7355 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7356
7357 if (wpa_s->create_p2p_iface) {
7358 enum wpa_driver_if_type iftype;
7359 /* Prepare to add a new interface for the group */
7360 iftype = WPA_IF_P2P_GROUP;
7361 if (go_intent == 15)
7362 iftype = WPA_IF_P2P_GO;
7363 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7364 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7365 "interface for the group");
7366 return -1;
7367 }
7368
7369 if_addr = wpa_s->pending_interface_addr;
7370 } else
7371 if_addr = wpa_s->own_addr;
7372
7373 wpa_s->p2p_nfc_tag_enabled = enabled;
7374
7375 p2p_set_authorized_oob_dev_pw_id(
7376 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7377 if_addr);
7378
7379 return 0;
7380 }
7381
7382 #endif /* CONFIG_WPS_NFC */
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