3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
8 * This file implements functions for registering and unregistering
9 * %wpa_supplicant interfaces. In addition, this file contains number of
10 * functions for managing network connections.
16 #include "crypto/random.h"
17 #include "crypto/sha1.h"
18 #include "eapol_supp/eapol_supp_sm.h"
19 #include "eap_peer/eap.h"
20 #include "eap_peer/eap_proxy.h"
21 #include "eap_server/eap_methods.h"
22 #include "rsn_supp/wpa.h"
25 #include "utils/ext_password.h"
26 #include "l2_packet/l2_packet.h"
27 #include "wpa_supplicant_i.h"
29 #include "ctrl_iface.h"
30 #include "pcsc_funcs.h"
31 #include "common/version.h"
32 #include "rsn_supp/preauth.h"
33 #include "rsn_supp/pmksa_cache.h"
34 #include "common/wpa_ctrl.h"
35 #include "common/ieee802_11_defs.h"
37 #include "blacklist.h"
38 #include "wpas_glue.h"
39 #include "wps_supplicant.h"
42 #include "gas_query.h"
44 #include "p2p_supplicant.h"
45 #include "wifi_display.h"
51 #include "offchannel.h"
52 #include "hs20_supplicant.h"
55 const char *wpa_supplicant_version =
56 "wpa_supplicant v" VERSION_STR "\n"
57 "Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi> and contributors";
59 const char *wpa_supplicant_license =
60 "This software may be distributed under the terms of the BSD license.\n"
61 "See README for more details.\n"
62 #ifdef EAP_TLS_OPENSSL
63 "\nThis product includes software developed by the OpenSSL Project\n"
64 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
65 #endif /* EAP_TLS_OPENSSL */
68 #ifndef CONFIG_NO_STDOUT_DEBUG
69 /* Long text divided into parts in order to fit in C89 strings size limits. */
70 const char *wpa_supplicant_full_license1 =
72 const char *wpa_supplicant_full_license2 =
73 "This software may be distributed under the terms of the BSD license.\n"
75 "Redistribution and use in source and binary forms, with or without\n"
76 "modification, are permitted provided that the following conditions are\n"
79 const char *wpa_supplicant_full_license3 =
80 "1. Redistributions of source code must retain the above copyright\n"
81 " notice, this list of conditions and the following disclaimer.\n"
83 "2. Redistributions in binary form must reproduce the above copyright\n"
84 " notice, this list of conditions and the following disclaimer in the\n"
85 " documentation and/or other materials provided with the distribution.\n"
87 const char *wpa_supplicant_full_license4 =
88 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
89 " names of its contributors may be used to endorse or promote products\n"
90 " derived from this software without specific prior written permission.\n"
92 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
93 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
94 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
95 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
96 const char *wpa_supplicant_full_license5 =
97 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
98 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
99 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
100 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
101 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
102 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
103 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
105 #endif /* CONFIG_NO_STDOUT_DEBUG */
107 /* Configure default/group WEP keys for static WEP */
108 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
112 for (i = 0; i < NUM_WEP_KEYS; i++) {
113 if (ssid->wep_key_len[i] == 0)
117 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
118 i, i == ssid->wep_tx_keyidx, NULL, 0,
119 ssid->wep_key[i], ssid->wep_key_len[i]);
126 int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
127 struct wpa_ssid *ssid)
134 /* IBSS/WPA-None uses only one key (Group) for both receiving and
135 * sending unicast and multicast packets. */
137 if (ssid->mode != WPAS_MODE_IBSS) {
138 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
139 "IBSS/ad-hoc) for WPA-None", ssid->mode);
143 if (!ssid->psk_set) {
144 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
149 switch (wpa_s->group_cipher) {
150 case WPA_CIPHER_CCMP:
151 os_memcpy(key, ssid->psk, 16);
155 case WPA_CIPHER_GCMP:
156 os_memcpy(key, ssid->psk, 16);
160 case WPA_CIPHER_TKIP:
161 /* WPA-None uses the same Michael MIC key for both TX and RX */
162 os_memcpy(key, ssid->psk, 16 + 8);
163 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
168 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
169 "WPA-None", wpa_s->group_cipher);
173 /* TODO: should actually remember the previously used seq#, both for TX
174 * and RX from each STA.. */
176 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
180 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
182 struct wpa_supplicant *wpa_s = eloop_ctx;
183 const u8 *bssid = wpa_s->bssid;
184 if (is_zero_ether_addr(bssid))
185 bssid = wpa_s->pending_bssid;
186 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
188 wpa_blacklist_add(wpa_s, bssid);
189 wpa_sm_notify_disassoc(wpa_s->wpa);
190 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
191 wpa_s->reassociate = 1;
194 * If we timed out, the AP or the local radio may be busy.
195 * So, wait a second until scanning again.
197 wpa_supplicant_req_scan(wpa_s, 1, 0);
202 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
203 * @wpa_s: Pointer to wpa_supplicant data
204 * @sec: Number of seconds after which to time out authentication
205 * @usec: Number of microseconds after which to time out authentication
207 * This function is used to schedule a timeout for the current authentication
210 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
213 if (wpa_s->conf->ap_scan == 0 &&
214 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
217 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
218 "%d usec", sec, usec);
219 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
220 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
225 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
226 * @wpa_s: Pointer to wpa_supplicant data
228 * This function is used to cancel authentication timeout scheduled with
229 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
232 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
234 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
235 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
236 wpa_blacklist_del(wpa_s, wpa_s->bssid);
241 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
242 * @wpa_s: Pointer to wpa_supplicant data
244 * This function is used to configure EAPOL state machine based on the selected
245 * authentication mode.
247 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
249 #ifdef IEEE8021X_EAPOL
250 struct eapol_config eapol_conf;
251 struct wpa_ssid *ssid = wpa_s->current_ssid;
253 #ifdef CONFIG_IBSS_RSN
254 if (ssid->mode == WPAS_MODE_IBSS &&
255 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
256 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
258 * RSN IBSS authentication is per-STA and we can disable the
259 * per-BSSID EAPOL authentication.
261 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
262 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
263 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
266 #endif /* CONFIG_IBSS_RSN */
268 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
269 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
271 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
272 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
273 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
275 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
277 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
278 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
279 eapol_conf.accept_802_1x_keys = 1;
280 eapol_conf.required_keys = 0;
281 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
282 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
284 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
285 eapol_conf.required_keys |=
286 EAPOL_REQUIRE_KEY_BROADCAST;
289 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)
290 eapol_conf.required_keys = 0;
292 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
293 eapol_conf.workaround = ssid->eap_workaround;
294 eapol_conf.eap_disabled =
295 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
296 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
297 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
298 eapol_conf.external_sim = wpa_s->conf->external_sim;
299 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
300 #endif /* IEEE8021X_EAPOL */
305 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
306 * @wpa_s: Pointer to wpa_supplicant data
307 * @ssid: Configuration data for the network
309 * This function is used to configure WPA state machine and related parameters
310 * to a mode where WPA is not enabled. This is called as part of the
311 * authentication configuration when the selected network does not use WPA.
313 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
314 struct wpa_ssid *ssid)
318 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
319 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
320 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
321 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
323 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
324 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
325 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
326 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
327 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
328 wpa_s->group_cipher = WPA_CIPHER_NONE;
329 wpa_s->mgmt_group_cipher = 0;
331 for (i = 0; i < NUM_WEP_KEYS; i++) {
332 if (ssid->wep_key_len[i] > 5) {
333 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
334 wpa_s->group_cipher = WPA_CIPHER_WEP104;
336 } else if (ssid->wep_key_len[i] > 0) {
337 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
338 wpa_s->group_cipher = WPA_CIPHER_WEP40;
343 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
344 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
345 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
346 wpa_s->pairwise_cipher);
347 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
348 #ifdef CONFIG_IEEE80211W
349 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
350 wpa_s->mgmt_group_cipher);
351 #endif /* CONFIG_IEEE80211W */
353 pmksa_cache_clear_current(wpa_s->wpa);
357 void free_hw_features(struct wpa_supplicant *wpa_s)
360 if (wpa_s->hw.modes == NULL)
363 for (i = 0; i < wpa_s->hw.num_modes; i++) {
364 os_free(wpa_s->hw.modes[i].channels);
365 os_free(wpa_s->hw.modes[i].rates);
368 os_free(wpa_s->hw.modes);
369 wpa_s->hw.modes = NULL;
373 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
375 bgscan_deinit(wpa_s);
376 autoscan_deinit(wpa_s);
377 scard_deinit(wpa_s->scard);
379 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
380 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
381 l2_packet_deinit(wpa_s->l2);
384 l2_packet_deinit(wpa_s->l2_br);
388 if (wpa_s->conf != NULL) {
389 struct wpa_ssid *ssid;
390 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
391 wpas_notify_network_removed(wpa_s, ssid);
394 os_free(wpa_s->confname);
395 wpa_s->confname = NULL;
397 os_free(wpa_s->confanother);
398 wpa_s->confanother = NULL;
401 os_free(wpa_s->conf_p2p_dev);
402 wpa_s->conf_p2p_dev = NULL;
403 #endif /* CONFIG_P2P */
405 wpa_sm_set_eapol(wpa_s->wpa, NULL);
406 eapol_sm_deinit(wpa_s->eapol);
409 rsn_preauth_deinit(wpa_s->wpa);
412 wpa_tdls_deinit(wpa_s->wpa);
413 #endif /* CONFIG_TDLS */
415 pmksa_candidate_free(wpa_s->wpa);
416 wpa_sm_deinit(wpa_s->wpa);
418 wpa_blacklist_clear(wpa_s);
420 wpa_bss_deinit(wpa_s);
422 wpa_supplicant_cancel_delayed_sched_scan(wpa_s);
423 wpa_supplicant_cancel_scan(wpa_s);
424 wpa_supplicant_cancel_auth_timeout(wpa_s);
425 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL);
426 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
427 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report,
429 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
431 wpas_wps_deinit(wpa_s);
433 wpabuf_free(wpa_s->pending_eapol_rx);
434 wpa_s->pending_eapol_rx = NULL;
436 #ifdef CONFIG_IBSS_RSN
437 ibss_rsn_deinit(wpa_s->ibss_rsn);
438 wpa_s->ibss_rsn = NULL;
439 #endif /* CONFIG_IBSS_RSN */
444 wpa_supplicant_ap_deinit(wpa_s);
445 #endif /* CONFIG_AP */
448 wpas_p2p_deinit(wpa_s);
449 #endif /* CONFIG_P2P */
451 #ifdef CONFIG_OFFCHANNEL
452 offchannel_deinit(wpa_s);
453 #endif /* CONFIG_OFFCHANNEL */
455 wpa_supplicant_cancel_sched_scan(wpa_s);
457 os_free(wpa_s->next_scan_freqs);
458 wpa_s->next_scan_freqs = NULL;
460 os_free(wpa_s->manual_scan_freqs);
461 wpa_s->manual_scan_freqs = NULL;
463 os_free(wpa_s->manual_sched_scan_freqs);
464 wpa_s->manual_sched_scan_freqs = NULL;
466 gas_query_deinit(wpa_s->gas);
469 free_hw_features(wpa_s);
471 os_free(wpa_s->bssid_filter);
472 wpa_s->bssid_filter = NULL;
474 os_free(wpa_s->disallow_aps_bssid);
475 wpa_s->disallow_aps_bssid = NULL;
476 os_free(wpa_s->disallow_aps_ssid);
477 wpa_s->disallow_aps_ssid = NULL;
479 wnm_bss_keep_alive_deinit(wpa_s);
481 wnm_deallocate_memory(wpa_s);
482 #endif /* CONFIG_WNM */
484 ext_password_deinit(wpa_s->ext_pw);
485 wpa_s->ext_pw = NULL;
487 wpabuf_free(wpa_s->last_gas_resp);
488 wpa_s->last_gas_resp = NULL;
489 wpabuf_free(wpa_s->prev_gas_resp);
490 wpa_s->prev_gas_resp = NULL;
492 os_free(wpa_s->last_scan_res);
493 wpa_s->last_scan_res = NULL;
496 hs20_free_osu_prov(wpa_s);
497 #endif /* CONFIG_HS20 */
502 * wpa_clear_keys - Clear keys configured for the driver
503 * @wpa_s: Pointer to wpa_supplicant data
504 * @addr: Previously used BSSID or %NULL if not available
506 * This function clears the encryption keys that has been previously configured
509 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
513 #ifdef CONFIG_IEEE80211W
515 #else /* CONFIG_IEEE80211W */
517 #endif /* CONFIG_IEEE80211W */
519 /* MLME-DELETEKEYS.request */
520 for (i = 0; i < max; i++) {
521 if (wpa_s->keys_cleared & BIT(i))
523 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, i, 0, NULL, 0,
526 if (!(wpa_s->keys_cleared & BIT(0)) && addr &&
527 !is_zero_ether_addr(addr)) {
528 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
530 /* MLME-SETPROTECTION.request(None) */
531 wpa_drv_mlme_setprotection(
533 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
534 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
536 wpa_s->keys_cleared = (u32) -1;
541 * wpa_supplicant_state_txt - Get the connection state name as a text string
542 * @state: State (wpa_state; WPA_*)
543 * Returns: The state name as a printable text string
545 const char * wpa_supplicant_state_txt(enum wpa_states state)
548 case WPA_DISCONNECTED:
549 return "DISCONNECTED";
552 case WPA_INTERFACE_DISABLED:
553 return "INTERFACE_DISABLED";
556 case WPA_AUTHENTICATING:
557 return "AUTHENTICATING";
558 case WPA_ASSOCIATING:
559 return "ASSOCIATING";
562 case WPA_4WAY_HANDSHAKE:
563 return "4WAY_HANDSHAKE";
564 case WPA_GROUP_HANDSHAKE:
565 return "GROUP_HANDSHAKE";
576 static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
580 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan)
581 name = wpa_s->current_ssid->bgscan;
583 name = wpa_s->conf->bgscan;
584 if (name == NULL || name[0] == '\0')
586 if (wpas_driver_bss_selection(wpa_s))
588 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
591 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
593 #endif /* CONFIG_P2P */
595 bgscan_deinit(wpa_s);
596 if (wpa_s->current_ssid) {
597 if (bgscan_init(wpa_s, wpa_s->current_ssid, name)) {
598 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
601 * Live without bgscan; it is only used as a roaming
602 * optimization, so the initial connection is not
606 struct wpa_scan_results *scan_res;
607 wpa_s->bgscan_ssid = wpa_s->current_ssid;
608 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL,
611 bgscan_notify_scan(wpa_s, scan_res);
612 wpa_scan_results_free(scan_res);
616 wpa_s->bgscan_ssid = NULL;
620 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
622 if (wpa_s->bgscan_ssid != NULL) {
623 bgscan_deinit(wpa_s);
624 wpa_s->bgscan_ssid = NULL;
628 #endif /* CONFIG_BGSCAN */
631 static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s)
633 if (autoscan_init(wpa_s, 0))
634 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan");
638 static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s)
640 autoscan_deinit(wpa_s);
644 void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s)
646 if (wpa_s->wpa_state == WPA_DISCONNECTED ||
647 wpa_s->wpa_state == WPA_SCANNING) {
648 autoscan_deinit(wpa_s);
649 wpa_supplicant_start_autoscan(wpa_s);
655 * wpa_supplicant_set_state - Set current connection state
656 * @wpa_s: Pointer to wpa_supplicant data
657 * @state: The new connection state
659 * This function is called whenever the connection state changes, e.g.,
660 * association is completed for WPA/WPA2 4-Way Handshake is started.
662 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
663 enum wpa_states state)
665 enum wpa_states old_state = wpa_s->wpa_state;
667 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
668 wpa_supplicant_state_txt(wpa_s->wpa_state),
669 wpa_supplicant_state_txt(state));
671 if (state == WPA_INTERFACE_DISABLED) {
672 /* Assure normal scan when interface is restored */
673 wpa_s->normal_scans = 0;
676 if (state == WPA_COMPLETED)
677 wpas_connect_work_done(wpa_s);
679 if (state != WPA_SCANNING)
680 wpa_supplicant_notify_scanning(wpa_s, 0);
682 if (state == WPA_COMPLETED && wpa_s->new_connection) {
683 struct wpa_ssid *ssid = wpa_s->current_ssid;
684 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
685 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
686 MACSTR " completed [id=%d id_str=%s]",
687 MAC2STR(wpa_s->bssid),
688 ssid ? ssid->id : -1,
689 ssid && ssid->id_str ? ssid->id_str : "");
690 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
691 wpas_clear_temp_disabled(wpa_s, ssid, 1);
692 wpa_s->extra_blacklist_count = 0;
693 wpa_s->new_connection = 0;
694 wpa_drv_set_operstate(wpa_s, 1);
695 #ifndef IEEE8021X_EAPOL
696 wpa_drv_set_supp_port(wpa_s, 1);
697 #endif /* IEEE8021X_EAPOL */
698 wpa_s->after_wps = 0;
699 wpa_s->known_wps_freq = 0;
701 wpas_p2p_completed(wpa_s);
702 #endif /* CONFIG_P2P */
704 sme_sched_obss_scan(wpa_s, 1);
705 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
706 state == WPA_ASSOCIATED) {
707 wpa_s->new_connection = 1;
708 wpa_drv_set_operstate(wpa_s, 0);
709 #ifndef IEEE8021X_EAPOL
710 wpa_drv_set_supp_port(wpa_s, 0);
711 #endif /* IEEE8021X_EAPOL */
712 sme_sched_obss_scan(wpa_s, 0);
714 wpa_s->wpa_state = state;
717 if (state == WPA_COMPLETED)
718 wpa_supplicant_start_bgscan(wpa_s);
719 else if (state < WPA_ASSOCIATED)
720 wpa_supplicant_stop_bgscan(wpa_s);
721 #endif /* CONFIG_BGSCAN */
723 if (state == WPA_AUTHENTICATING)
724 wpa_supplicant_stop_autoscan(wpa_s);
726 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE)
727 wpa_supplicant_start_autoscan(wpa_s);
729 if (wpa_s->wpa_state != old_state) {
730 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
732 if (wpa_s->wpa_state == WPA_COMPLETED ||
733 old_state == WPA_COMPLETED)
734 wpas_notify_auth_changed(wpa_s);
739 void wpa_supplicant_terminate_proc(struct wpa_global *global)
743 struct wpa_supplicant *wpa_s = global->ifaces;
745 struct wpa_supplicant *next = wpa_s->next;
747 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE ||
748 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group))
749 wpas_p2p_disconnect(wpa_s);
750 #endif /* CONFIG_P2P */
751 if (wpas_wps_terminate_pending(wpa_s) == 1)
755 #endif /* CONFIG_WPS */
762 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
764 struct wpa_global *global = signal_ctx;
765 wpa_supplicant_terminate_proc(global);
769 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
771 enum wpa_states old_state = wpa_s->wpa_state;
773 wpa_s->pairwise_cipher = 0;
774 wpa_s->group_cipher = 0;
775 wpa_s->mgmt_group_cipher = 0;
777 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
778 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
780 if (wpa_s->wpa_state != old_state)
781 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
786 * wpa_supplicant_reload_configuration - Reload configuration data
787 * @wpa_s: Pointer to wpa_supplicant data
788 * Returns: 0 on success or -1 if configuration parsing failed
790 * This function can be used to request that the configuration data is reloaded
791 * (e.g., after configuration file change). This function is reloading
792 * configuration only for one interface, so this may need to be called multiple
793 * times if %wpa_supplicant is controlling multiple interfaces and all
794 * interfaces need reconfiguration.
796 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
798 struct wpa_config *conf;
802 if (wpa_s->confname == NULL)
804 conf = wpa_config_read(wpa_s->confname, NULL);
806 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
807 "file '%s' - exiting", wpa_s->confname);
810 wpa_config_read(wpa_s->confanother, conf);
812 conf->changed_parameters = (unsigned int) -1;
814 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
815 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
816 os_strcmp(conf->ctrl_interface,
817 wpa_s->conf->ctrl_interface) != 0);
819 if (reconf_ctrl && wpa_s->ctrl_iface) {
820 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
821 wpa_s->ctrl_iface = NULL;
824 eapol_sm_invalidate_cached_session(wpa_s->eapol);
825 if (wpa_s->current_ssid) {
826 wpa_supplicant_deauthenticate(wpa_s,
827 WLAN_REASON_DEAUTH_LEAVING);
831 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
832 * pkcs11_engine_path, pkcs11_module_path.
834 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
836 * Clear forced success to clear EAP state for next
839 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
841 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
842 wpa_sm_set_config(wpa_s->wpa, NULL);
843 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
844 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
845 rsn_preauth_deinit(wpa_s->wpa);
847 old_ap_scan = wpa_s->conf->ap_scan;
848 wpa_config_free(wpa_s->conf);
850 if (old_ap_scan != wpa_s->conf->ap_scan)
851 wpas_notify_ap_scan_changed(wpa_s);
854 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
856 wpa_supplicant_update_config(wpa_s);
858 wpa_supplicant_clear_status(wpa_s);
859 if (wpa_supplicant_enabled_networks(wpa_s)) {
860 wpa_s->reassociate = 1;
861 wpa_supplicant_req_scan(wpa_s, 0, 0);
863 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
868 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
870 struct wpa_global *global = signal_ctx;
871 struct wpa_supplicant *wpa_s;
872 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
873 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
875 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
876 wpa_supplicant_terminate_proc(global);
882 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
883 struct wpa_ssid *ssid,
884 struct wpa_ie_data *ie)
886 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
889 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
890 "from association info");
895 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
897 if (!(ie->group_cipher & ssid->group_cipher)) {
898 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
899 "cipher 0x%x (mask 0x%x) - reject",
900 ie->group_cipher, ssid->group_cipher);
903 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
904 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
905 "cipher 0x%x (mask 0x%x) - reject",
906 ie->pairwise_cipher, ssid->pairwise_cipher);
909 if (!(ie->key_mgmt & ssid->key_mgmt)) {
910 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
911 "management 0x%x (mask 0x%x) - reject",
912 ie->key_mgmt, ssid->key_mgmt);
916 #ifdef CONFIG_IEEE80211W
917 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
918 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
919 wpa_s->conf->pmf : ssid->ieee80211w) ==
920 MGMT_FRAME_PROTECTION_REQUIRED) {
921 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
922 "that does not support management frame protection - "
926 #endif /* CONFIG_IEEE80211W */
933 * wpa_supplicant_set_suites - Set authentication and encryption parameters
934 * @wpa_s: Pointer to wpa_supplicant data
935 * @bss: Scan results for the selected BSS, or %NULL if not available
936 * @ssid: Configuration data for the selected network
937 * @wpa_ie: Buffer for the WPA/RSN IE
938 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
939 * used buffer length in case the functions returns success.
940 * Returns: 0 on success or -1 on failure
942 * This function is used to configure authentication and encryption parameters
943 * based on the network configuration and scan result for the selected BSS (if
946 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
947 struct wpa_bss *bss, struct wpa_ssid *ssid,
948 u8 *wpa_ie, size_t *wpa_ie_len)
950 struct wpa_ie_data ie;
952 const u8 *bss_wpa, *bss_rsn, *bss_osen;
955 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
956 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
957 bss_osen = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
959 bss_wpa = bss_rsn = bss_osen = NULL;
961 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
962 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
963 (ie.group_cipher & ssid->group_cipher) &&
964 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
965 (ie.key_mgmt & ssid->key_mgmt)) {
966 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
967 proto = WPA_PROTO_RSN;
968 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
969 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
970 (ie.group_cipher & ssid->group_cipher) &&
971 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
972 (ie.key_mgmt & ssid->key_mgmt)) {
973 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
974 proto = WPA_PROTO_WPA;
976 } else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) {
977 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN");
978 /* TODO: parse OSEN element */
979 ie.group_cipher = WPA_CIPHER_CCMP;
980 ie.pairwise_cipher = WPA_CIPHER_CCMP;
981 ie.key_mgmt = WPA_KEY_MGMT_OSEN;
982 proto = WPA_PROTO_OSEN;
983 #endif /* CONFIG_HS20 */
985 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
988 if (ssid->proto & WPA_PROTO_OSEN)
989 proto = WPA_PROTO_OSEN;
990 else if (ssid->proto & WPA_PROTO_RSN)
991 proto = WPA_PROTO_RSN;
993 proto = WPA_PROTO_WPA;
994 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
995 os_memset(&ie, 0, sizeof(ie));
996 ie.group_cipher = ssid->group_cipher;
997 ie.pairwise_cipher = ssid->pairwise_cipher;
998 ie.key_mgmt = ssid->key_mgmt;
999 #ifdef CONFIG_IEEE80211W
1000 ie.mgmt_group_cipher =
1001 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
1002 WPA_CIPHER_AES_128_CMAC : 0;
1003 #endif /* CONFIG_IEEE80211W */
1004 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
1005 "based on configuration");
1010 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
1011 "pairwise %d key_mgmt %d proto %d",
1012 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
1013 #ifdef CONFIG_IEEE80211W
1014 if (ssid->ieee80211w) {
1015 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
1016 ie.mgmt_group_cipher);
1018 #endif /* CONFIG_IEEE80211W */
1020 wpa_s->wpa_proto = proto;
1021 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
1022 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
1023 !!(ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN)));
1025 if (bss || !wpa_s->ap_ies_from_associnfo) {
1026 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1027 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1028 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1029 bss_rsn ? 2 + bss_rsn[1] : 0))
1033 sel = ie.group_cipher & ssid->group_cipher;
1034 wpa_s->group_cipher = wpa_pick_group_cipher(sel);
1035 if (wpa_s->group_cipher < 0) {
1036 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
1040 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK %s",
1041 wpa_cipher_txt(wpa_s->group_cipher));
1043 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
1044 wpa_s->pairwise_cipher = wpa_pick_pairwise_cipher(sel, 1);
1045 if (wpa_s->pairwise_cipher < 0) {
1046 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
1050 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK %s",
1051 wpa_cipher_txt(wpa_s->pairwise_cipher));
1053 sel = ie.key_mgmt & ssid->key_mgmt;
1055 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE))
1056 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE);
1057 #endif /* CONFIG_SAE */
1059 #ifdef CONFIG_IEEE80211R
1060 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
1061 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
1062 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
1063 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1064 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
1065 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
1066 #endif /* CONFIG_IEEE80211R */
1068 } else if (sel & WPA_KEY_MGMT_SAE) {
1069 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE;
1070 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE");
1071 } else if (sel & WPA_KEY_MGMT_FT_SAE) {
1072 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE;
1073 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE");
1074 #endif /* CONFIG_SAE */
1075 #ifdef CONFIG_IEEE80211W
1076 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1077 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
1078 wpa_dbg(wpa_s, MSG_DEBUG,
1079 "WPA: using KEY_MGMT 802.1X with SHA256");
1080 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1081 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
1082 wpa_dbg(wpa_s, MSG_DEBUG,
1083 "WPA: using KEY_MGMT PSK with SHA256");
1084 #endif /* CONFIG_IEEE80211W */
1085 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1086 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1087 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
1088 } else if (sel & WPA_KEY_MGMT_PSK) {
1089 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
1090 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
1091 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1092 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
1093 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
1095 } else if (sel & WPA_KEY_MGMT_OSEN) {
1096 wpa_s->key_mgmt = WPA_KEY_MGMT_OSEN;
1097 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using KEY_MGMT OSEN");
1098 #endif /* CONFIG_HS20 */
1100 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1101 "authenticated key management type");
1105 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1106 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1107 wpa_s->pairwise_cipher);
1108 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1110 #ifdef CONFIG_IEEE80211W
1111 sel = ie.mgmt_group_cipher;
1112 if ((ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1113 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION ||
1114 !(ie.capabilities & WPA_CAPABILITY_MFPC))
1116 if (sel & WPA_CIPHER_AES_128_CMAC) {
1117 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1118 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1120 } else if (sel & WPA_CIPHER_BIP_GMAC_128) {
1121 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_128;
1122 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1124 } else if (sel & WPA_CIPHER_BIP_GMAC_256) {
1125 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_256;
1126 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1128 } else if (sel & WPA_CIPHER_BIP_CMAC_256) {
1129 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_CMAC_256;
1130 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1133 wpa_s->mgmt_group_cipher = 0;
1134 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
1136 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1137 wpa_s->mgmt_group_cipher);
1138 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP,
1139 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1140 wpa_s->conf->pmf : ssid->ieee80211w));
1141 #endif /* CONFIG_IEEE80211W */
1143 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
1144 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
1148 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
1149 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
1150 #ifndef CONFIG_NO_PBKDF2
1151 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1154 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len,
1155 4096, psk, PMK_LEN);
1156 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1158 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1160 #endif /* CONFIG_NO_PBKDF2 */
1161 #ifdef CONFIG_EXT_PASSWORD
1162 if (ssid->ext_psk) {
1163 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw,
1165 char pw_str[64 + 1];
1169 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK "
1170 "found from external storage");
1174 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) {
1175 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected "
1176 "PSK length %d in external storage",
1177 (int) wpabuf_len(pw));
1178 ext_password_free(pw);
1182 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw));
1183 pw_str[wpabuf_len(pw)] = '\0';
1185 #ifndef CONFIG_NO_PBKDF2
1186 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss)
1188 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len,
1189 4096, psk, PMK_LEN);
1190 os_memset(pw_str, 0, sizeof(pw_str));
1191 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from "
1192 "external passphrase)",
1194 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1196 #endif /* CONFIG_NO_PBKDF2 */
1197 if (wpabuf_len(pw) == 2 * PMK_LEN) {
1198 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) {
1199 wpa_msg(wpa_s, MSG_INFO, "EXT PW: "
1200 "Invalid PSK hex string");
1201 os_memset(pw_str, 0, sizeof(pw_str));
1202 ext_password_free(pw);
1205 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1207 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable "
1209 os_memset(pw_str, 0, sizeof(pw_str));
1210 ext_password_free(pw);
1214 os_memset(pw_str, 0, sizeof(pw_str));
1215 ext_password_free(pw);
1217 #endif /* CONFIG_EXT_PASSWORD */
1219 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1225 static void wpas_ext_capab_byte(struct wpa_supplicant *wpa_s, u8 *pos, int idx)
1230 case 0: /* Bits 0-7 */
1232 case 1: /* Bits 8-15 */
1234 case 2: /* Bits 16-23 */
1236 *pos |= 0x02; /* Bit 17 - WNM-Sleep Mode */
1237 *pos |= 0x08; /* Bit 19 - BSS Transition */
1238 #endif /* CONFIG_WNM */
1240 case 3: /* Bits 24-31 */
1242 *pos |= 0x02; /* Bit 25 - SSID List */
1243 #endif /* CONFIG_WNM */
1244 #ifdef CONFIG_INTERWORKING
1245 if (wpa_s->conf->interworking)
1246 *pos |= 0x80; /* Bit 31 - Interworking */
1247 #endif /* CONFIG_INTERWORKING */
1249 case 4: /* Bits 32-39 */
1250 #ifdef CONFIG_INTERWORKING
1251 if (wpa_s->drv_flags / WPA_DRIVER_FLAGS_QOS_MAPPING)
1252 *pos |= 0x01; /* Bit 32 - QoS Map */
1253 #endif /* CONFIG_INTERWORKING */
1255 case 5: /* Bits 40-47 */
1257 if (wpa_s->conf->hs20)
1258 *pos |= 0x40; /* Bit 46 - WNM-Notification */
1259 #endif /* CONFIG_HS20 */
1261 case 6: /* Bits 48-55 */
1267 int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf)
1272 if (len < wpa_s->extended_capa_len)
1273 len = wpa_s->extended_capa_len;
1275 *pos++ = WLAN_EID_EXT_CAPAB;
1277 for (i = 0; i < len; i++, pos++) {
1278 wpas_ext_capab_byte(wpa_s, pos, i);
1280 if (i < wpa_s->extended_capa_len) {
1281 *pos &= ~wpa_s->extended_capa_mask[i];
1282 *pos |= wpa_s->extended_capa[i];
1286 while (len > 0 && buf[1 + len] == 0) {
1297 static int wpas_valid_bss(struct wpa_supplicant *wpa_s,
1298 struct wpa_bss *test_bss)
1300 struct wpa_bss *bss;
1302 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1303 if (bss == test_bss)
1311 static int wpas_valid_ssid(struct wpa_supplicant *wpa_s,
1312 struct wpa_ssid *test_ssid)
1314 struct wpa_ssid *ssid;
1316 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1317 if (ssid == test_ssid)
1325 int wpas_valid_bss_ssid(struct wpa_supplicant *wpa_s, struct wpa_bss *test_bss,
1326 struct wpa_ssid *test_ssid)
1328 if (test_bss && !wpas_valid_bss(wpa_s, test_bss))
1331 return test_ssid == NULL || wpas_valid_ssid(wpa_s, test_ssid);
1335 void wpas_connect_work_free(struct wpa_connect_work *cwork)
1343 void wpas_connect_work_done(struct wpa_supplicant *wpa_s)
1345 struct wpa_connect_work *cwork;
1346 struct wpa_radio_work *work = wpa_s->connect_work;
1351 wpa_s->connect_work = NULL;
1354 wpas_connect_work_free(cwork);
1355 radio_work_done(work);
1359 static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit);
1362 * wpa_supplicant_associate - Request association
1363 * @wpa_s: Pointer to wpa_supplicant data
1364 * @bss: Scan results for the selected BSS, or %NULL if not available
1365 * @ssid: Configuration data for the selected network
1367 * This function is used to request %wpa_supplicant to associate with a BSS.
1369 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
1370 struct wpa_bss *bss, struct wpa_ssid *ssid)
1372 struct wpa_connect_work *cwork;
1374 #ifdef CONFIG_IBSS_RSN
1375 ibss_rsn_deinit(wpa_s->ibss_rsn);
1376 wpa_s->ibss_rsn = NULL;
1377 #endif /* CONFIG_IBSS_RSN */
1379 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1380 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1382 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1383 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1387 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) {
1388 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1389 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
1390 wpas_p2p_ap_setup_failed(wpa_s);
1393 wpa_s->current_bss = bss;
1394 #else /* CONFIG_AP */
1395 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1397 #endif /* CONFIG_AP */
1403 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1405 #endif /* CONFIG_TDLS */
1407 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1408 ssid->mode == IEEE80211_MODE_INFRA) {
1409 sme_authenticate(wpa_s, bss, ssid);
1413 if (wpa_s->connect_work) {
1414 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since connect_work exist");
1418 if (radio_work_pending(wpa_s, "connect")) {
1419 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since pending work exist");
1423 cwork = os_zalloc(sizeof(*cwork));
1430 if (radio_add_work(wpa_s, bss ? bss->freq : 0, "connect", 1,
1431 wpas_start_assoc_cb, cwork) < 0) {
1437 static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit)
1439 struct wpa_connect_work *cwork = work->ctx;
1440 struct wpa_bss *bss = cwork->bss;
1441 struct wpa_ssid *ssid = cwork->ssid;
1442 struct wpa_supplicant *wpa_s = work->wpa_s;
1445 int use_crypt, ret, i, bssid_changed;
1446 int algs = WPA_AUTH_ALG_OPEN;
1447 unsigned int cipher_pairwise, cipher_group;
1448 struct wpa_driver_associate_params params;
1449 int wep_keys_set = 0;
1450 int assoc_failed = 0;
1451 struct wpa_ssid *old_ssid;
1452 #ifdef CONFIG_HT_OVERRIDES
1453 struct ieee80211_ht_capabilities htcaps;
1454 struct ieee80211_ht_capabilities htcaps_mask;
1455 #endif /* CONFIG_HT_OVERRIDES */
1456 #ifdef CONFIG_VHT_OVERRIDES
1457 struct ieee80211_vht_capabilities vhtcaps;
1458 struct ieee80211_vht_capabilities vhtcaps_mask;
1459 #endif /* CONFIG_VHT_OVERRIDES */
1462 if (work->started) {
1463 wpa_s->connect_work = NULL;
1465 /* cancel possible auth. timeout */
1466 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s,
1469 wpas_connect_work_free(cwork);
1473 wpa_s->connect_work = work;
1475 if (!wpas_valid_bss_ssid(wpa_s, bss, ssid)) {
1476 wpa_dbg(wpa_s, MSG_DEBUG, "BSS/SSID entry for association not valid anymore - drop connection attempt");
1477 wpas_connect_work_done(wpa_s);
1481 os_memset(¶ms, 0, sizeof(params));
1482 wpa_s->reassociate = 0;
1483 wpa_s->eap_expected_failure = 0;
1484 if (bss && !wpas_driver_bss_selection(wpa_s)) {
1485 #ifdef CONFIG_IEEE80211R
1486 const u8 *ie, *md = NULL;
1487 #endif /* CONFIG_IEEE80211R */
1488 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1489 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1490 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
1491 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1492 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1493 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1495 wpas_notify_bssid_changed(wpa_s);
1496 #ifdef CONFIG_IEEE80211R
1497 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1498 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1500 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
1502 /* Prepare for the next transition */
1503 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
1505 #endif /* CONFIG_IEEE80211R */
1507 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1508 wpa_s->conf->ap_scan == 2 &&
1509 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1510 /* Use ap_scan==1 style network selection to find the network
1512 wpa_s->scan_req = MANUAL_SCAN_REQ;
1513 wpa_s->reassociate = 1;
1514 wpa_supplicant_req_scan(wpa_s, 0, 0);
1516 #endif /* CONFIG_WPS */
1518 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1519 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1520 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1522 wpa_supplicant_cancel_sched_scan(wpa_s);
1523 wpa_supplicant_cancel_scan(wpa_s);
1525 /* Starting new association, so clear the possibly used WPA IE from the
1526 * previous association. */
1527 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1529 #ifdef IEEE8021X_EAPOL
1530 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1532 if (ssid->non_leap == 0)
1533 algs = WPA_AUTH_ALG_LEAP;
1535 algs |= WPA_AUTH_ALG_LEAP;
1538 #endif /* IEEE8021X_EAPOL */
1539 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1540 if (ssid->auth_alg) {
1541 algs = ssid->auth_alg;
1542 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1546 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1547 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
1548 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
1549 int try_opportunistic;
1550 try_opportunistic = (ssid->proactive_key_caching < 0 ?
1552 ssid->proactive_key_caching) &&
1553 (ssid->proto & WPA_PROTO_RSN);
1554 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1555 ssid, try_opportunistic) == 0)
1556 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1557 wpa_ie_len = sizeof(wpa_ie);
1558 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1559 wpa_ie, &wpa_ie_len)) {
1560 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1561 "key management and encryption suites");
1564 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss &&
1565 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
1567 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
1568 * use non-WPA since the scan results did not indicate that the
1569 * AP is using WPA or WPA2.
1571 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1573 wpa_s->wpa_proto = 0;
1574 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
1575 wpa_ie_len = sizeof(wpa_ie);
1576 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1577 wpa_ie, &wpa_ie_len)) {
1578 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1579 "key management and encryption suites (no "
1584 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1585 struct wpabuf *wps_ie;
1586 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1587 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1588 wpa_ie_len = wpabuf_len(wps_ie);
1589 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1592 wpabuf_free(wps_ie);
1593 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1594 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1595 params.wps = WPS_MODE_PRIVACY;
1597 params.wps = WPS_MODE_OPEN;
1598 wpa_s->wpa_proto = 0;
1599 #endif /* CONFIG_WPS */
1601 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1603 wpa_s->wpa_proto = 0;
1607 if (wpa_s->global->p2p) {
1611 pos = wpa_ie + wpa_ie_len;
1612 len = sizeof(wpa_ie) - wpa_ie_len;
1613 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
1619 wpa_s->cross_connect_disallowed = 0;
1622 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1624 wpa_s->cross_connect_disallowed =
1625 p2p_get_cross_connect_disallowed(p2p);
1627 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1629 wpa_s->cross_connect_disallowed ?
1630 "disallows" : "allows");
1634 os_memset(wpa_s->p2p_ip_addr_info, 0, sizeof(wpa_s->p2p_ip_addr_info));
1635 #endif /* CONFIG_P2P */
1638 if (is_hs20_network(wpa_s, ssid, bss)) {
1639 struct wpabuf *hs20;
1640 hs20 = wpabuf_alloc(20);
1642 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
1643 wpas_hs20_add_indication(hs20, pps_mo_id);
1644 os_memcpy(wpa_ie + wpa_ie_len, wpabuf_head(hs20),
1646 wpa_ie_len += wpabuf_len(hs20);
1650 #endif /* CONFIG_HS20 */
1653 * Workaround: Add Extended Capabilities element only if the AP
1654 * included this element in Beacon/Probe Response frames. Some older
1655 * APs seem to have interoperability issues if this element is
1656 * included, so while the standard may require us to include the
1657 * element in all cases, it is justifiable to skip it to avoid
1658 * interoperability issues.
1660 if (!bss || wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB)) {
1663 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
1664 if (ext_capab_len > 0) {
1666 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
1668 os_memmove(pos + ext_capab_len, pos,
1669 wpa_ie_len - (pos - wpa_ie));
1670 wpa_ie_len += ext_capab_len;
1671 os_memcpy(pos, ext_capab, ext_capab_len);
1675 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1677 cipher_pairwise = wpa_s->pairwise_cipher;
1678 cipher_group = wpa_s->group_cipher;
1679 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1680 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1681 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1683 if (wpa_set_wep_keys(wpa_s, ssid)) {
1688 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1691 #ifdef IEEE8021X_EAPOL
1692 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1693 if ((ssid->eapol_flags &
1694 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1695 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1699 /* Assume that dynamic WEP-104 keys will be used and
1700 * set cipher suites in order for drivers to expect
1702 cipher_pairwise = cipher_group = WPA_CIPHER_WEP104;
1705 #endif /* IEEE8021X_EAPOL */
1707 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1708 /* Set the key before (and later after) association */
1709 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1712 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1714 params.ssid = bss->ssid;
1715 params.ssid_len = bss->ssid_len;
1716 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) {
1717 wpa_printf(MSG_DEBUG, "Limit connection to BSSID "
1718 MACSTR " freq=%u MHz based on scan results "
1720 MAC2STR(bss->bssid), bss->freq,
1722 params.bssid = bss->bssid;
1723 params.freq = bss->freq;
1725 params.bssid_hint = bss->bssid;
1726 params.freq_hint = bss->freq;
1728 params.ssid = ssid->ssid;
1729 params.ssid_len = ssid->ssid_len;
1732 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set &&
1733 wpa_s->conf->ap_scan == 2) {
1734 params.bssid = ssid->bssid;
1735 params.fixed_bssid = 1;
1738 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1740 params.freq = ssid->frequency; /* Initial channel for IBSS */
1742 if (ssid->mode == WPAS_MODE_IBSS) {
1743 if (ssid->beacon_int)
1744 params.beacon_int = ssid->beacon_int;
1746 params.beacon_int = wpa_s->conf->beacon_int;
1749 params.wpa_ie = wpa_ie;
1750 params.wpa_ie_len = wpa_ie_len;
1751 params.pairwise_suite = cipher_pairwise;
1752 params.group_suite = cipher_group;
1753 params.key_mgmt_suite = wpa_s->key_mgmt;
1754 params.wpa_proto = wpa_s->wpa_proto;
1755 params.auth_alg = algs;
1756 params.mode = ssid->mode;
1757 params.bg_scan_period = ssid->bg_scan_period;
1758 for (i = 0; i < NUM_WEP_KEYS; i++) {
1759 if (ssid->wep_key_len[i])
1760 params.wep_key[i] = ssid->wep_key[i];
1761 params.wep_key_len[i] = ssid->wep_key_len[i];
1763 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1765 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1766 (params.key_mgmt_suite == WPA_KEY_MGMT_PSK ||
1767 params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
1768 params.passphrase = ssid->passphrase;
1770 params.psk = ssid->psk;
1773 params.drop_unencrypted = use_crypt;
1775 #ifdef CONFIG_IEEE80211W
1776 params.mgmt_frame_protection =
1777 ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1778 wpa_s->conf->pmf : ssid->ieee80211w;
1779 if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) {
1780 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1781 struct wpa_ie_data ie;
1782 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1784 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1785 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1786 "MFP: require MFP");
1787 params.mgmt_frame_protection =
1788 MGMT_FRAME_PROTECTION_REQUIRED;
1791 #endif /* CONFIG_IEEE80211W */
1793 params.p2p = ssid->p2p_group;
1795 if (wpa_s->parent->set_sta_uapsd)
1796 params.uapsd = wpa_s->parent->sta_uapsd;
1800 #ifdef CONFIG_HT_OVERRIDES
1801 os_memset(&htcaps, 0, sizeof(htcaps));
1802 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1803 params.htcaps = (u8 *) &htcaps;
1804 params.htcaps_mask = (u8 *) &htcaps_mask;
1805 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms);
1806 #endif /* CONFIG_HT_OVERRIDES */
1807 #ifdef CONFIG_VHT_OVERRIDES
1808 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1809 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1810 params.vhtcaps = &vhtcaps;
1811 params.vhtcaps_mask = &vhtcaps_mask;
1812 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
1813 #endif /* CONFIG_VHT_OVERRIDES */
1817 * If multi-channel concurrency is not supported, check for any
1818 * frequency conflict. In case of any frequency conflict, remove the
1819 * least prioritized connection.
1821 if (wpa_s->num_multichan_concurrent < 2) {
1822 int freq = wpa_drv_shared_freq(wpa_s);
1823 if (freq > 0 && freq != params.freq) {
1824 wpa_printf(MSG_DEBUG, "Shared interface with conflicting frequency found (%d != %d)",
1826 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
1832 #endif /* CONFIG_P2P */
1834 ret = wpa_drv_associate(wpa_s, ¶ms);
1836 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1838 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1840 * The driver is known to mean what is saying, so we
1841 * can stop right here; the association will not
1844 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1845 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1846 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1849 /* try to continue anyway; new association will be tried again
1854 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1855 /* Set the key after the association just in case association
1856 * cleared the previously configured key. */
1857 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1858 /* No need to timeout authentication since there is no key
1860 wpa_supplicant_cancel_auth_timeout(wpa_s);
1861 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1862 #ifdef CONFIG_IBSS_RSN
1863 } else if (ssid->mode == WPAS_MODE_IBSS &&
1864 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1865 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1867 * RSN IBSS authentication is per-STA and we can disable the
1868 * per-BSSID authentication.
1870 wpa_supplicant_cancel_auth_timeout(wpa_s);
1871 #endif /* CONFIG_IBSS_RSN */
1873 /* Timeout for IEEE 802.11 authentication and association */
1877 /* give IBSS a bit more time */
1878 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1879 } else if (wpa_s->conf->ap_scan == 1) {
1880 /* give IBSS a bit more time */
1881 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1883 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1887 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC)) {
1888 /* Set static WEP keys again */
1889 wpa_set_wep_keys(wpa_s, ssid);
1892 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1894 * Do not allow EAP session resumption between different
1895 * network configurations.
1897 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1899 old_ssid = wpa_s->current_ssid;
1900 wpa_s->current_ssid = ssid;
1901 wpa_s->current_bss = bss;
1902 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1903 wpa_supplicant_initiate_eapol(wpa_s);
1904 if (old_ssid != wpa_s->current_ssid)
1905 wpas_notify_network_changed(wpa_s);
1909 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1912 struct wpa_ssid *old_ssid;
1914 wpa_clear_keys(wpa_s, addr);
1915 old_ssid = wpa_s->current_ssid;
1916 wpa_supplicant_mark_disassoc(wpa_s);
1917 wpa_sm_set_config(wpa_s->wpa, NULL);
1918 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1919 if (old_ssid != wpa_s->current_ssid)
1920 wpas_notify_network_changed(wpa_s);
1921 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1926 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1927 * @wpa_s: Pointer to wpa_supplicant data
1928 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1930 * This function is used to request %wpa_supplicant to deauthenticate from the
1933 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1937 union wpa_event_data event;
1940 wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR
1941 " pending_bssid=" MACSTR " reason=%d state=%s",
1942 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1943 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state));
1945 if (!is_zero_ether_addr(wpa_s->bssid))
1946 addr = wpa_s->bssid;
1947 else if (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1948 (wpa_s->wpa_state == WPA_AUTHENTICATING ||
1949 wpa_s->wpa_state == WPA_ASSOCIATING))
1950 addr = wpa_s->pending_bssid;
1951 else if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1953 * When using driver-based BSS selection, we may not know the
1954 * BSSID with which we are currently trying to associate. We
1955 * need to notify the driver of this disconnection even in such
1956 * a case, so use the all zeros address here.
1958 addr = wpa_s->bssid;
1963 wpa_tdls_teardown_peers(wpa_s->wpa);
1964 #endif /* CONFIG_TDLS */
1967 wpa_drv_deauthenticate(wpa_s, addr, reason_code);
1968 os_memset(&event, 0, sizeof(event));
1969 event.deauth_info.reason_code = (u16) reason_code;
1970 event.deauth_info.locally_generated = 1;
1971 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event);
1976 wpa_supplicant_clear_connection(wpa_s, addr);
1979 static void wpa_supplicant_enable_one_network(struct wpa_supplicant *wpa_s,
1980 struct wpa_ssid *ssid)
1982 if (!ssid || !ssid->disabled || ssid->disabled == 2)
1986 wpas_clear_temp_disabled(wpa_s, ssid, 1);
1987 wpas_notify_network_enabled_changed(wpa_s, ssid);
1990 * Try to reassociate since there is no current configuration and a new
1991 * network was made available.
1993 if (!wpa_s->current_ssid && !wpa_s->disconnected)
1994 wpa_s->reassociate = 1;
1999 * wpa_supplicant_enable_network - Mark a configured network as enabled
2000 * @wpa_s: wpa_supplicant structure for a network interface
2001 * @ssid: wpa_ssid structure for a configured network or %NULL
2003 * Enables the specified network or all networks if no network specified.
2005 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
2006 struct wpa_ssid *ssid)
2009 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2010 wpa_supplicant_enable_one_network(wpa_s, ssid);
2012 wpa_supplicant_enable_one_network(wpa_s, ssid);
2014 if (wpa_s->reassociate && !wpa_s->disconnected) {
2015 if (wpa_s->sched_scanning) {
2016 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan to add "
2017 "new network to scan filters");
2018 wpa_supplicant_cancel_sched_scan(wpa_s);
2021 if (wpa_supplicant_fast_associate(wpa_s) != 1)
2022 wpa_supplicant_req_scan(wpa_s, 0, 0);
2028 * wpa_supplicant_disable_network - Mark a configured network as disabled
2029 * @wpa_s: wpa_supplicant structure for a network interface
2030 * @ssid: wpa_ssid structure for a configured network or %NULL
2032 * Disables the specified network or all networks if no network specified.
2034 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
2035 struct wpa_ssid *ssid)
2037 struct wpa_ssid *other_ssid;
2041 if (wpa_s->sched_scanning)
2042 wpa_supplicant_cancel_sched_scan(wpa_s);
2044 for (other_ssid = wpa_s->conf->ssid; other_ssid;
2045 other_ssid = other_ssid->next) {
2046 was_disabled = other_ssid->disabled;
2047 if (was_disabled == 2)
2048 continue; /* do not change persistent P2P group
2051 other_ssid->disabled = 1;
2053 if (was_disabled != other_ssid->disabled)
2054 wpas_notify_network_enabled_changed(
2057 if (wpa_s->current_ssid)
2058 wpa_supplicant_deauthenticate(
2059 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2060 } else if (ssid->disabled != 2) {
2061 if (ssid == wpa_s->current_ssid)
2062 wpa_supplicant_deauthenticate(
2063 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2065 was_disabled = ssid->disabled;
2069 if (was_disabled != ssid->disabled) {
2070 wpas_notify_network_enabled_changed(wpa_s, ssid);
2071 if (wpa_s->sched_scanning) {
2072 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan "
2073 "to remove network from filters");
2074 wpa_supplicant_cancel_sched_scan(wpa_s);
2075 wpa_supplicant_req_scan(wpa_s, 0, 0);
2083 * wpa_supplicant_select_network - Attempt association with a network
2084 * @wpa_s: wpa_supplicant structure for a network interface
2085 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
2087 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
2088 struct wpa_ssid *ssid)
2091 struct wpa_ssid *other_ssid;
2092 int disconnected = 0;
2094 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) {
2095 wpa_supplicant_deauthenticate(
2096 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2101 wpas_clear_temp_disabled(wpa_s, ssid, 1);
2104 * Mark all other networks disabled or mark all networks enabled if no
2105 * network specified.
2107 for (other_ssid = wpa_s->conf->ssid; other_ssid;
2108 other_ssid = other_ssid->next) {
2109 int was_disabled = other_ssid->disabled;
2110 if (was_disabled == 2)
2111 continue; /* do not change persistent P2P group data */
2113 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
2114 if (was_disabled && !other_ssid->disabled)
2115 wpas_clear_temp_disabled(wpa_s, other_ssid, 0);
2117 if (was_disabled != other_ssid->disabled)
2118 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
2121 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) {
2122 /* We are already associated with the selected network */
2123 wpa_printf(MSG_DEBUG, "Already associated with the "
2124 "selected network - do nothing");
2129 wpa_s->current_ssid = ssid;
2130 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
2132 wpa_s->connect_without_scan = NULL;
2133 wpa_s->disconnected = 0;
2134 wpa_s->reassociate = 1;
2136 if (wpa_supplicant_fast_associate(wpa_s) != 1)
2137 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0);
2140 wpas_notify_network_selected(wpa_s, ssid);
2145 * wpas_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path
2146 * @wpa_s: wpa_supplicant structure for a network interface
2147 * @pkcs11_engine_path: PKCS #11 engine path or NULL
2148 * @pkcs11_module_path: PKCS #11 module path or NULL
2149 * Returns: 0 on success; -1 on failure
2151 * Sets the PKCS #11 engine and module path. Both have to be NULL or a valid
2152 * path. If resetting the EAPOL state machine with the new PKCS #11 engine and
2153 * module path fails the paths will be reset to the default value (NULL).
2155 int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s,
2156 const char *pkcs11_engine_path,
2157 const char *pkcs11_module_path)
2159 char *pkcs11_engine_path_copy = NULL;
2160 char *pkcs11_module_path_copy = NULL;
2162 if (pkcs11_engine_path != NULL) {
2163 pkcs11_engine_path_copy = os_strdup(pkcs11_engine_path);
2164 if (pkcs11_engine_path_copy == NULL)
2167 if (pkcs11_module_path != NULL) {
2168 pkcs11_module_path_copy = os_strdup(pkcs11_module_path);
2169 if (pkcs11_module_path_copy == NULL) {
2170 os_free(pkcs11_engine_path_copy);
2175 os_free(wpa_s->conf->pkcs11_engine_path);
2176 os_free(wpa_s->conf->pkcs11_module_path);
2177 wpa_s->conf->pkcs11_engine_path = pkcs11_engine_path_copy;
2178 wpa_s->conf->pkcs11_module_path = pkcs11_module_path_copy;
2180 wpa_sm_set_eapol(wpa_s->wpa, NULL);
2181 eapol_sm_deinit(wpa_s->eapol);
2182 wpa_s->eapol = NULL;
2183 if (wpa_supplicant_init_eapol(wpa_s)) {
2184 /* Error -> Reset paths to the default value (NULL) once. */
2185 if (pkcs11_engine_path != NULL && pkcs11_module_path != NULL)
2186 wpas_set_pkcs11_engine_and_module_path(wpa_s, NULL,
2191 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2198 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
2199 * @wpa_s: wpa_supplicant structure for a network interface
2200 * @ap_scan: AP scan mode
2201 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
2204 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
2209 if (ap_scan < 0 || ap_scan > 2)
2213 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
2214 wpa_s->wpa_state >= WPA_ASSOCIATING &&
2215 wpa_s->wpa_state < WPA_COMPLETED) {
2216 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
2217 "associating", wpa_s->conf->ap_scan, ap_scan);
2220 #endif /* ANDROID */
2222 old_ap_scan = wpa_s->conf->ap_scan;
2223 wpa_s->conf->ap_scan = ap_scan;
2225 if (old_ap_scan != wpa_s->conf->ap_scan)
2226 wpas_notify_ap_scan_changed(wpa_s);
2233 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
2234 * @wpa_s: wpa_supplicant structure for a network interface
2235 * @expire_age: Expiration age in seconds
2236 * Returns: 0 if succeed or -1 if expire_age has an invalid value
2239 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
2240 unsigned int bss_expire_age)
2242 if (bss_expire_age < 10) {
2243 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
2247 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
2249 wpa_s->conf->bss_expiration_age = bss_expire_age;
2256 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
2257 * @wpa_s: wpa_supplicant structure for a network interface
2258 * @expire_count: number of scans after which an unseen BSS is reclaimed
2259 * Returns: 0 if succeed or -1 if expire_count has an invalid value
2262 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
2263 unsigned int bss_expire_count)
2265 if (bss_expire_count < 1) {
2266 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
2270 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
2272 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
2279 * wpa_supplicant_set_scan_interval - Set scan interval
2280 * @wpa_s: wpa_supplicant structure for a network interface
2281 * @scan_interval: scan interval in seconds
2282 * Returns: 0 if succeed or -1 if scan_interval has an invalid value
2285 int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s,
2288 if (scan_interval < 0) {
2289 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d",
2293 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec",
2295 wpa_supplicant_update_scan_int(wpa_s, scan_interval);
2302 * wpa_supplicant_set_debug_params - Set global debug params
2303 * @global: wpa_global structure
2304 * @debug_level: debug level
2305 * @debug_timestamp: determines if show timestamp in debug data
2306 * @debug_show_keys: determines if show keys in debug data
2307 * Returns: 0 if succeed or -1 if debug_level has wrong value
2309 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
2310 int debug_timestamp, int debug_show_keys)
2313 int old_level, old_timestamp, old_show_keys;
2315 /* check for allowed debuglevels */
2316 if (debug_level != MSG_EXCESSIVE &&
2317 debug_level != MSG_MSGDUMP &&
2318 debug_level != MSG_DEBUG &&
2319 debug_level != MSG_INFO &&
2320 debug_level != MSG_WARNING &&
2321 debug_level != MSG_ERROR)
2324 old_level = wpa_debug_level;
2325 old_timestamp = wpa_debug_timestamp;
2326 old_show_keys = wpa_debug_show_keys;
2328 wpa_debug_level = debug_level;
2329 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
2330 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
2332 if (wpa_debug_level != old_level)
2333 wpas_notify_debug_level_changed(global);
2334 if (wpa_debug_timestamp != old_timestamp)
2335 wpas_notify_debug_timestamp_changed(global);
2336 if (wpa_debug_show_keys != old_show_keys)
2337 wpas_notify_debug_show_keys_changed(global);
2344 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
2345 * @wpa_s: Pointer to wpa_supplicant data
2346 * Returns: A pointer to the current network structure or %NULL on failure
2348 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
2350 struct wpa_ssid *entry;
2351 u8 ssid[MAX_SSID_LEN];
2357 res = wpa_drv_get_ssid(wpa_s, ssid);
2359 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
2365 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2366 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
2371 wired = wpa_s->conf->ap_scan == 0 &&
2372 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
2374 entry = wpa_s->conf->ssid;
2376 if (!wpas_network_disabled(wpa_s, entry) &&
2377 ((ssid_len == entry->ssid_len &&
2378 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
2379 (!entry->bssid_set ||
2380 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
2383 if (!wpas_network_disabled(wpa_s, entry) &&
2384 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
2385 (entry->ssid == NULL || entry->ssid_len == 0) &&
2386 (!entry->bssid_set ||
2387 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
2389 #endif /* CONFIG_WPS */
2391 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set &&
2392 entry->ssid_len == 0 &&
2393 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
2396 entry = entry->next;
2403 static int select_driver(struct wpa_supplicant *wpa_s, int i)
2405 struct wpa_global *global = wpa_s->global;
2407 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
2408 global->drv_priv[i] = wpa_drivers[i]->global_init();
2409 if (global->drv_priv[i] == NULL) {
2410 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2411 "'%s'", wpa_drivers[i]->name);
2416 wpa_s->driver = wpa_drivers[i];
2417 wpa_s->global_drv_priv = global->drv_priv[i];
2423 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
2428 const char *pos, *driver = name;
2433 if (wpa_drivers[0] == NULL) {
2434 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
2440 /* default to first driver in the list */
2441 return select_driver(wpa_s, 0);
2445 pos = os_strchr(driver, ',');
2449 len = os_strlen(driver);
2451 for (i = 0; wpa_drivers[i]; i++) {
2452 if (os_strlen(wpa_drivers[i]->name) == len &&
2453 os_strncmp(driver, wpa_drivers[i]->name, len) ==
2455 /* First driver that succeeds wins */
2456 if (select_driver(wpa_s, i) == 0)
2464 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
2470 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
2471 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
2472 * with struct wpa_driver_ops::init()
2473 * @src_addr: Source address of the EAPOL frame
2474 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
2475 * @len: Length of the EAPOL data
2477 * This function is called for each received EAPOL frame. Most driver
2478 * interfaces rely on more generic OS mechanism for receiving frames through
2479 * l2_packet, but if such a mechanism is not available, the driver wrapper may
2480 * take care of received EAPOL frames and deliver them to the core supplicant
2481 * code by calling this function.
2483 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
2484 const u8 *buf, size_t len)
2486 struct wpa_supplicant *wpa_s = ctx;
2488 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
2489 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
2491 #ifdef CONFIG_PEERKEY
2492 if (wpa_s->wpa_state > WPA_ASSOCIATED && wpa_s->current_ssid &&
2493 wpa_s->current_ssid->peerkey &&
2494 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2495 wpa_sm_rx_eapol_peerkey(wpa_s->wpa, src_addr, buf, len) == 1) {
2496 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: Processed PeerKey EAPOL-Key");
2499 #endif /* CONFIG_PEERKEY */
2501 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
2502 (wpa_s->last_eapol_matches_bssid &&
2505 #endif /* CONFIG_AP */
2506 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) != 0)) {
2508 * There is possible race condition between receiving the
2509 * association event and the EAPOL frame since they are coming
2510 * through different paths from the driver. In order to avoid
2511 * issues in trying to process the EAPOL frame before receiving
2512 * association information, lets queue it for processing until
2513 * the association event is received. This may also be needed in
2514 * driver-based roaming case, so also use src_addr != BSSID as a
2515 * trigger if we have previously confirmed that the
2516 * Authenticator uses BSSID as the src_addr (which is not the
2517 * case with wired IEEE 802.1X).
2519 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
2520 "of received EAPOL frame (state=%s bssid=" MACSTR ")",
2521 wpa_supplicant_state_txt(wpa_s->wpa_state),
2522 MAC2STR(wpa_s->bssid));
2523 wpabuf_free(wpa_s->pending_eapol_rx);
2524 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
2525 if (wpa_s->pending_eapol_rx) {
2526 os_get_reltime(&wpa_s->pending_eapol_rx_time);
2527 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
2533 wpa_s->last_eapol_matches_bssid =
2534 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) == 0;
2537 if (wpa_s->ap_iface) {
2538 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
2541 #endif /* CONFIG_AP */
2543 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
2544 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
2545 "no key management is configured");
2549 if (wpa_s->eapol_received == 0 &&
2550 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
2551 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
2552 wpa_s->wpa_state != WPA_COMPLETED) &&
2553 (wpa_s->current_ssid == NULL ||
2554 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
2555 /* Timeout for completing IEEE 802.1X and WPA authentication */
2556 wpa_supplicant_req_auth_timeout(
2558 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2559 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
2560 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
2563 wpa_s->eapol_received++;
2565 if (wpa_s->countermeasures) {
2566 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
2571 #ifdef CONFIG_IBSS_RSN
2572 if (wpa_s->current_ssid &&
2573 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
2574 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
2577 #endif /* CONFIG_IBSS_RSN */
2579 /* Source address of the incoming EAPOL frame could be compared to the
2580 * current BSSID. However, it is possible that a centralized
2581 * Authenticator could be using another MAC address than the BSSID of
2582 * an AP, so just allow any address to be used for now. The replies are
2583 * still sent to the current BSSID (if available), though. */
2585 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
2586 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
2587 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
2589 wpa_drv_poll(wpa_s);
2590 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
2591 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
2592 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2594 * Set portValid = TRUE here since we are going to skip 4-way
2595 * handshake processing which would normally set portValid. We
2596 * need this to allow the EAPOL state machines to be completed
2597 * without going through EAPOL-Key handshake.
2599 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2604 int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s)
2606 if (wpa_s->driver->send_eapol) {
2607 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2609 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2610 } else if ((!wpa_s->p2p_mgmt ||
2611 !(wpa_s->drv_flags &
2612 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) &&
2613 !(wpa_s->drv_flags &
2614 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
2615 l2_packet_deinit(wpa_s->l2);
2616 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2617 wpa_drv_get_mac_addr(wpa_s),
2619 wpa_supplicant_rx_eapol, wpa_s, 0);
2620 if (wpa_s->l2 == NULL)
2623 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2625 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2628 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
2629 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
2637 static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr,
2638 const u8 *buf, size_t len)
2640 struct wpa_supplicant *wpa_s = ctx;
2641 const struct l2_ethhdr *eth;
2643 if (len < sizeof(*eth))
2645 eth = (const struct l2_ethhdr *) buf;
2647 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 &&
2648 !(eth->h_dest[0] & 0x01)) {
2649 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
2650 " (bridge - not for this interface - ignore)",
2651 MAC2STR(src_addr), MAC2STR(eth->h_dest));
2655 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
2656 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest));
2657 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth),
2658 len - sizeof(*eth));
2663 * wpa_supplicant_driver_init - Initialize driver interface parameters
2664 * @wpa_s: Pointer to wpa_supplicant data
2665 * Returns: 0 on success, -1 on failure
2667 * This function is called to initialize driver interface parameters.
2668 * wpa_drv_init() must have been called before this function to initialize the
2671 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
2673 static int interface_count = 0;
2675 if (wpa_supplicant_update_mac_addr(wpa_s) < 0)
2678 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2679 MAC2STR(wpa_s->own_addr));
2680 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2682 if (wpa_s->bridge_ifname[0]) {
2683 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2684 "interface '%s'", wpa_s->bridge_ifname);
2685 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2688 wpa_supplicant_rx_eapol_bridge,
2690 if (wpa_s->l2_br == NULL) {
2691 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2692 "connection for the bridge interface '%s'",
2693 wpa_s->bridge_ifname);
2698 wpa_clear_keys(wpa_s, NULL);
2700 /* Make sure that TKIP countermeasures are not left enabled (could
2701 * happen if wpa_supplicant is killed during countermeasures. */
2702 wpa_drv_set_countermeasures(wpa_s, 0);
2704 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
2705 wpa_drv_flush_pmkid(wpa_s);
2707 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
2708 wpa_s->prev_scan_wildcard = 0;
2710 if (wpa_supplicant_enabled_networks(wpa_s)) {
2711 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2712 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2713 interface_count = 0;
2715 if (!wpa_s->p2p_mgmt &&
2716 wpa_supplicant_delayed_sched_scan(wpa_s,
2717 interface_count % 3,
2719 wpa_supplicant_req_scan(wpa_s, interface_count % 3,
2723 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
2729 static int wpa_supplicant_daemon(const char *pid_file)
2731 wpa_printf(MSG_DEBUG, "Daemonize..");
2732 return os_daemonize(pid_file);
2736 static struct wpa_supplicant * wpa_supplicant_alloc(void)
2738 struct wpa_supplicant *wpa_s;
2740 wpa_s = os_zalloc(sizeof(*wpa_s));
2743 wpa_s->scan_req = INITIAL_SCAN_REQ;
2744 wpa_s->scan_interval = 5;
2745 wpa_s->new_connection = 1;
2746 wpa_s->parent = wpa_s;
2747 wpa_s->sched_scanning = 0;
2753 #ifdef CONFIG_HT_OVERRIDES
2755 static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s,
2756 struct ieee80211_ht_capabilities *htcaps,
2757 struct ieee80211_ht_capabilities *htcaps_mask,
2760 /* parse ht_mcs into hex array */
2762 const char *tmp = ht_mcs;
2765 /* If ht_mcs is null, do not set anything */
2769 /* This is what we are setting in the kernel */
2770 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN);
2772 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs);
2774 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
2776 long v = strtol(tmp, &end, 16);
2778 wpa_msg(wpa_s, MSG_DEBUG,
2779 "htcap value[%i]: %ld end: %p tmp: %p",
2784 htcaps->supported_mcs_set[i] = v;
2787 wpa_msg(wpa_s, MSG_ERROR,
2788 "Failed to parse ht-mcs: %s, error: %s\n",
2789 ht_mcs, strerror(errno));
2795 * If we were able to parse any values, then set mask for the MCS set.
2798 os_memset(&htcaps_mask->supported_mcs_set, 0xff,
2799 IEEE80211_HT_MCS_MASK_LEN - 1);
2800 /* skip the 3 reserved bits */
2801 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] =
2809 static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s,
2810 struct ieee80211_ht_capabilities *htcaps,
2811 struct ieee80211_ht_capabilities *htcaps_mask,
2816 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled);
2821 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE);
2822 htcaps_mask->ht_capabilities_info |= msk;
2824 htcaps->ht_capabilities_info &= msk;
2826 htcaps->ht_capabilities_info |= msk;
2832 static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s,
2833 struct ieee80211_ht_capabilities *htcaps,
2834 struct ieee80211_ht_capabilities *htcaps_mask,
2837 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor);
2842 if (factor < 0 || factor > 3) {
2843 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. "
2844 "Must be 0-3 or -1", factor);
2848 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */
2849 htcaps->a_mpdu_params &= ~0x3;
2850 htcaps->a_mpdu_params |= factor & 0x3;
2856 static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s,
2857 struct ieee80211_ht_capabilities *htcaps,
2858 struct ieee80211_ht_capabilities *htcaps_mask,
2861 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density);
2866 if (density < 0 || density > 7) {
2867 wpa_msg(wpa_s, MSG_ERROR,
2868 "ampdu_density: %d out of range. Must be 0-7 or -1.",
2873 htcaps_mask->a_mpdu_params |= 0x1C;
2874 htcaps->a_mpdu_params &= ~(0x1C);
2875 htcaps->a_mpdu_params |= (density << 2) & 0x1C;
2881 static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s,
2882 struct ieee80211_ht_capabilities *htcaps,
2883 struct ieee80211_ht_capabilities *htcaps_mask,
2886 /* Masking these out disables HT40 */
2887 u16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET |
2888 HT_CAP_INFO_SHORT_GI40MHZ);
2890 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled);
2893 htcaps->ht_capabilities_info &= ~msk;
2895 htcaps->ht_capabilities_info |= msk;
2897 htcaps_mask->ht_capabilities_info |= msk;
2903 static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s,
2904 struct ieee80211_ht_capabilities *htcaps,
2905 struct ieee80211_ht_capabilities *htcaps_mask,
2908 /* Masking these out disables SGI */
2909 u16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ |
2910 HT_CAP_INFO_SHORT_GI40MHZ);
2912 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled);
2915 htcaps->ht_capabilities_info &= ~msk;
2917 htcaps->ht_capabilities_info |= msk;
2919 htcaps_mask->ht_capabilities_info |= msk;
2925 void wpa_supplicant_apply_ht_overrides(
2926 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
2927 struct wpa_driver_associate_params *params)
2929 struct ieee80211_ht_capabilities *htcaps;
2930 struct ieee80211_ht_capabilities *htcaps_mask;
2935 params->disable_ht = ssid->disable_ht;
2936 if (!params->htcaps || !params->htcaps_mask)
2939 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps;
2940 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask;
2941 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs);
2942 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask,
2943 ssid->disable_max_amsdu);
2944 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor);
2945 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density);
2946 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40);
2947 wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi);
2950 #endif /* CONFIG_HT_OVERRIDES */
2953 #ifdef CONFIG_VHT_OVERRIDES
2954 void wpa_supplicant_apply_vht_overrides(
2955 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
2956 struct wpa_driver_associate_params *params)
2958 struct ieee80211_vht_capabilities *vhtcaps;
2959 struct ieee80211_vht_capabilities *vhtcaps_mask;
2964 params->disable_vht = ssid->disable_vht;
2966 vhtcaps = (void *) params->vhtcaps;
2967 vhtcaps_mask = (void *) params->vhtcaps_mask;
2969 if (!vhtcaps || !vhtcaps_mask)
2972 vhtcaps->vht_capabilities_info = ssid->vht_capa;
2973 vhtcaps_mask->vht_capabilities_info = ssid->vht_capa_mask;
2975 #define OVERRIDE_MCS(i) \
2976 if (ssid->vht_tx_mcs_nss_ ##i >= 0) { \
2977 vhtcaps_mask->vht_supported_mcs_set.tx_map |= \
2979 vhtcaps->vht_supported_mcs_set.tx_map |= \
2980 ssid->vht_tx_mcs_nss_ ##i << 2 * (i - 1); \
2982 if (ssid->vht_rx_mcs_nss_ ##i >= 0) { \
2983 vhtcaps_mask->vht_supported_mcs_set.rx_map |= \
2985 vhtcaps->vht_supported_mcs_set.rx_map |= \
2986 ssid->vht_rx_mcs_nss_ ##i << 2 * (i - 1); \
2998 #endif /* CONFIG_VHT_OVERRIDES */
3001 static int pcsc_reader_init(struct wpa_supplicant *wpa_s)
3006 if (!wpa_s->conf->pcsc_reader)
3009 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
3013 if (wpa_s->conf->pcsc_pin &&
3014 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) {
3015 scard_deinit(wpa_s->scard);
3016 wpa_s->scard = NULL;
3017 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed");
3021 len = sizeof(wpa_s->imsi) - 1;
3022 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
3023 scard_deinit(wpa_s->scard);
3024 wpa_s->scard = NULL;
3025 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
3028 wpa_s->imsi[len] = '\0';
3030 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
3032 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
3033 wpa_s->imsi, wpa_s->mnc_len);
3035 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
3036 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
3037 #endif /* PCSC_FUNCS */
3043 int wpas_init_ext_pw(struct wpa_supplicant *wpa_s)
3047 ext_password_deinit(wpa_s->ext_pw);
3048 wpa_s->ext_pw = NULL;
3049 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL);
3051 if (!wpa_s->conf->ext_password_backend)
3054 val = os_strdup(wpa_s->conf->ext_password_backend);
3057 pos = os_strchr(val, ':');
3061 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val);
3063 wpa_s->ext_pw = ext_password_init(val, pos);
3065 if (wpa_s->ext_pw == NULL) {
3066 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend");
3069 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw);
3075 static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s,
3078 struct wpa_supplicant *iface = wpa_s->global->ifaces;
3079 struct wpa_radio *radio;
3081 while (rn && iface) {
3082 radio = iface->radio;
3083 if (radio && os_strcmp(rn, radio->name) == 0) {
3084 wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s",
3086 dl_list_add(&radio->ifaces, &wpa_s->radio_list);
3090 iface = iface->next;
3093 wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s",
3094 wpa_s->ifname, rn ? rn : "N/A");
3095 radio = os_zalloc(sizeof(*radio));
3100 os_strlcpy(radio->name, rn, sizeof(radio->name));
3101 dl_list_init(&radio->ifaces);
3102 dl_list_init(&radio->work);
3103 dl_list_add(&radio->ifaces, &wpa_s->radio_list);
3109 static void radio_work_free(struct wpa_radio_work *work)
3111 if (work->wpa_s->scan_work == work) {
3112 /* This should not really happen. */
3113 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as scan_work",
3114 work->type, work, work->started);
3115 work->wpa_s->scan_work = NULL;
3119 if (work->wpa_s->p2p_scan_work == work) {
3120 /* This should not really happen. */
3121 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as p2p_scan_work",
3122 work->type, work, work->started);
3123 work->wpa_s->p2p_scan_work = NULL;
3125 #endif /* CONFIG_P2P */
3127 dl_list_del(&work->list);
3132 static void radio_start_next_work(void *eloop_ctx, void *timeout_ctx)
3134 struct wpa_radio *radio = eloop_ctx;
3135 struct wpa_radio_work *work;
3136 struct os_reltime now, diff;
3137 struct wpa_supplicant *wpa_s;
3139 work = dl_list_first(&radio->work, struct wpa_radio_work, list);
3144 return; /* already started and still in progress */
3146 wpa_s = dl_list_first(&radio->ifaces, struct wpa_supplicant,
3148 if (wpa_s && wpa_s->external_scan_running) {
3149 wpa_printf(MSG_DEBUG, "Delay radio work start until externally triggered scan completes");
3153 os_get_reltime(&now);
3154 os_reltime_sub(&now, &work->time, &diff);
3155 wpa_dbg(work->wpa_s, MSG_DEBUG, "Starting radio work '%s'@%p after %ld.%06ld second wait",
3156 work->type, work, diff.sec, diff.usec);
3164 * This function removes both started and pending radio works running on
3165 * the provided interface's radio.
3166 * Prior to the removal of the radio work, its callback (cb) is called with
3167 * deinit set to be 1. Each work's callback is responsible for clearing its
3168 * internal data and restoring to a correct state.
3169 * @wpa_s: wpa_supplicant data
3170 * @type: type of works to be removed
3171 * @remove_all: 1 to remove all the works on this radio, 0 to remove only
3172 * this interface's works.
3174 void radio_remove_works(struct wpa_supplicant *wpa_s,
3175 const char *type, int remove_all)
3177 struct wpa_radio_work *work, *tmp;
3178 struct wpa_radio *radio = wpa_s->radio;
3180 dl_list_for_each_safe(work, tmp, &radio->work, struct wpa_radio_work,
3182 if (type && os_strcmp(type, work->type) != 0)
3185 /* skip other ifaces' works */
3186 if (!remove_all && work->wpa_s != wpa_s)
3189 wpa_dbg(wpa_s, MSG_DEBUG, "Remove radio work '%s'@%p%s",
3190 work->type, work, work->started ? " (started)" : "");
3192 radio_work_free(work);
3195 /* in case we removed the started work */
3196 radio_work_check_next(wpa_s);
3200 static void radio_remove_interface(struct wpa_supplicant *wpa_s)
3202 struct wpa_radio *radio = wpa_s->radio;
3207 wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s",
3208 wpa_s->ifname, radio->name);
3209 dl_list_del(&wpa_s->radio_list);
3210 radio_remove_works(wpa_s, NULL, 0);
3211 wpa_s->radio = NULL;
3212 if (!dl_list_empty(&radio->ifaces))
3213 return; /* Interfaces remain for this radio */
3215 wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name);
3216 eloop_cancel_timeout(radio_start_next_work, radio, NULL);
3221 void radio_work_check_next(struct wpa_supplicant *wpa_s)
3223 struct wpa_radio *radio = wpa_s->radio;
3225 if (dl_list_empty(&radio->work))
3227 eloop_cancel_timeout(radio_start_next_work, radio, NULL);
3228 eloop_register_timeout(0, 0, radio_start_next_work, radio, NULL);
3233 * radio_add_work - Add a radio work item
3234 * @wpa_s: Pointer to wpa_supplicant data
3235 * @freq: Frequency of the offchannel operation in MHz or 0
3236 * @type: Unique identifier for each type of work
3237 * @next: Force as the next work to be executed
3238 * @cb: Callback function for indicating when radio is available
3239 * @ctx: Context pointer for the work (work->ctx in cb())
3240 * Returns: 0 on success, -1 on failure
3242 * This function is used to request time for an operation that requires
3243 * exclusive radio control. Once the radio is available, the registered callback
3244 * function will be called. radio_work_done() must be called once the exclusive
3245 * radio operation has been completed, so that the radio is freed for other
3246 * operations. The special case of deinit=1 is used to free the context data
3247 * during interface removal. That does not allow the callback function to start
3248 * the radio operation, i.e., it must free any resources allocated for the radio
3251 * The @freq parameter can be used to indicate a single channel on which the
3252 * offchannel operation will occur. This may allow multiple radio work
3253 * operations to be performed in parallel if they apply for the same channel.
3254 * Setting this to 0 indicates that the work item may use multiple channels or
3255 * requires exclusive control of the radio.
3257 int radio_add_work(struct wpa_supplicant *wpa_s, unsigned int freq,
3258 const char *type, int next,
3259 void (*cb)(struct wpa_radio_work *work, int deinit),
3262 struct wpa_radio_work *work;
3265 work = os_zalloc(sizeof(*work));
3268 wpa_dbg(wpa_s, MSG_DEBUG, "Add radio work '%s'@%p", type, work);
3269 os_get_reltime(&work->time);
3272 work->wpa_s = wpa_s;
3276 was_empty = dl_list_empty(&wpa_s->radio->work);
3278 dl_list_add(&wpa_s->radio->work, &work->list);
3280 dl_list_add_tail(&wpa_s->radio->work, &work->list);
3282 wpa_dbg(wpa_s, MSG_DEBUG, "First radio work item in the queue - schedule start immediately");
3283 radio_work_check_next(wpa_s);
3291 * radio_work_done - Indicate that a radio work item has been completed
3292 * @work: Completed work
3294 * This function is called once the callback function registered with
3295 * radio_add_work() has completed its work.
3297 void radio_work_done(struct wpa_radio_work *work)
3299 struct wpa_supplicant *wpa_s = work->wpa_s;
3300 struct os_reltime now, diff;
3301 unsigned int started = work->started;
3303 os_get_reltime(&now);
3304 os_reltime_sub(&now, &work->time, &diff);
3305 wpa_dbg(wpa_s, MSG_DEBUG, "Radio work '%s'@%p %s in %ld.%06ld seconds",
3306 work->type, work, started ? "done" : "canceled",
3307 diff.sec, diff.usec);
3308 radio_work_free(work);
3310 radio_work_check_next(wpa_s);
3314 int radio_work_pending(struct wpa_supplicant *wpa_s, const char *type)
3316 struct wpa_radio_work *work;
3317 struct wpa_radio *radio = wpa_s->radio;
3319 dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) {
3320 if (work->wpa_s == wpa_s && os_strcmp(work->type, type) == 0)
3328 static int wpas_init_driver(struct wpa_supplicant *wpa_s,
3329 struct wpa_interface *iface)
3331 const char *ifname, *driver, *rn;
3333 driver = iface->driver;
3335 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
3338 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
3339 if (wpa_s->drv_priv == NULL) {
3341 pos = driver ? os_strchr(driver, ',') : NULL;
3343 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
3344 "driver interface - try next driver wrapper");
3348 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
3352 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
3353 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
3354 "driver_param '%s'", wpa_s->conf->driver_param);
3358 ifname = wpa_drv_get_ifname(wpa_s);
3359 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
3360 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
3361 "interface name with '%s'", ifname);
3362 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
3365 rn = wpa_driver_get_radio_name(wpa_s);
3366 if (rn && rn[0] == '\0')
3369 wpa_s->radio = radio_add_interface(wpa_s, rn);
3370 if (wpa_s->radio == NULL)
3377 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
3378 struct wpa_interface *iface)
3380 struct wpa_driver_capa capa;
3382 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
3383 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
3384 iface->confname ? iface->confname : "N/A",
3385 iface->driver ? iface->driver : "default",
3386 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
3387 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
3389 if (iface->confname) {
3390 #ifdef CONFIG_BACKEND_FILE
3391 wpa_s->confname = os_rel2abs_path(iface->confname);
3392 if (wpa_s->confname == NULL) {
3393 wpa_printf(MSG_ERROR, "Failed to get absolute path "
3394 "for configuration file '%s'.",
3398 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
3399 iface->confname, wpa_s->confname);
3400 #else /* CONFIG_BACKEND_FILE */
3401 wpa_s->confname = os_strdup(iface->confname);
3402 #endif /* CONFIG_BACKEND_FILE */
3403 wpa_s->conf = wpa_config_read(wpa_s->confname, NULL);
3404 if (wpa_s->conf == NULL) {
3405 wpa_printf(MSG_ERROR, "Failed to read or parse "
3406 "configuration '%s'.", wpa_s->confname);
3409 wpa_s->confanother = os_rel2abs_path(iface->confanother);
3410 wpa_config_read(wpa_s->confanother, wpa_s->conf);
3413 wpa_s->conf_p2p_dev = os_rel2abs_path(iface->conf_p2p_dev);
3414 wpa_config_read(wpa_s->conf_p2p_dev, wpa_s->conf);
3415 #endif /* CONFIG_P2P */
3418 * Override ctrl_interface and driver_param if set on command
3421 if (iface->ctrl_interface) {
3422 os_free(wpa_s->conf->ctrl_interface);
3423 wpa_s->conf->ctrl_interface =
3424 os_strdup(iface->ctrl_interface);
3427 if (iface->driver_param) {
3428 os_free(wpa_s->conf->driver_param);
3429 wpa_s->conf->driver_param =
3430 os_strdup(iface->driver_param);
3433 if (iface->p2p_mgmt && !iface->ctrl_interface) {
3434 os_free(wpa_s->conf->ctrl_interface);
3435 wpa_s->conf->ctrl_interface = NULL;
3438 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
3439 iface->driver_param);
3441 if (wpa_s->conf == NULL) {
3442 wpa_printf(MSG_ERROR, "\nNo configuration found.");
3446 if (iface->ifname == NULL) {
3447 wpa_printf(MSG_ERROR, "\nInterface name is required.");
3450 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
3451 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
3455 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
3457 if (iface->bridge_ifname) {
3458 if (os_strlen(iface->bridge_ifname) >=
3459 sizeof(wpa_s->bridge_ifname)) {
3460 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
3461 "name '%s'.", iface->bridge_ifname);
3464 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
3465 sizeof(wpa_s->bridge_ifname));
3468 /* RSNA Supplicant Key Management - INITIALIZE */
3469 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
3470 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
3472 /* Initialize driver interface and register driver event handler before
3473 * L2 receive handler so that association events are processed before
3474 * EAPOL-Key packets if both become available for the same select()
3476 if (wpas_init_driver(wpa_s, iface) < 0)
3479 if (wpa_supplicant_init_wpa(wpa_s) < 0)
3482 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
3483 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
3485 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
3487 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
3488 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
3489 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
3490 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
3491 "dot11RSNAConfigPMKLifetime");
3495 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
3496 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
3497 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
3498 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
3499 "dot11RSNAConfigPMKReauthThreshold");
3503 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
3504 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
3505 wpa_s->conf->dot11RSNAConfigSATimeout)) {
3506 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
3507 "dot11RSNAConfigSATimeout");
3511 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
3512 &wpa_s->hw.num_modes,
3515 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
3516 wpa_s->drv_capa_known = 1;
3517 wpa_s->drv_flags = capa.flags;
3518 wpa_s->drv_enc = capa.enc;
3519 wpa_s->probe_resp_offloads = capa.probe_resp_offloads;
3520 wpa_s->max_scan_ssids = capa.max_scan_ssids;
3521 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
3522 wpa_s->sched_scan_supported = capa.sched_scan_supported;
3523 wpa_s->max_match_sets = capa.max_match_sets;
3524 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
3525 wpa_s->max_stations = capa.max_stations;
3526 wpa_s->extended_capa = capa.extended_capa;
3527 wpa_s->extended_capa_mask = capa.extended_capa_mask;
3528 wpa_s->extended_capa_len = capa.extended_capa_len;
3529 wpa_s->num_multichan_concurrent =
3530 capa.num_multichan_concurrent;
3532 if (wpa_s->max_remain_on_chan == 0)
3533 wpa_s->max_remain_on_chan = 1000;
3536 * Only take p2p_mgmt parameters when P2P Device is supported.
3537 * Doing it here as it determines whether l2_packet_init() will be done
3538 * during wpa_supplicant_driver_init().
3540 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
3541 wpa_s->p2p_mgmt = iface->p2p_mgmt;
3543 iface->p2p_mgmt = 1;
3545 if (wpa_s->num_multichan_concurrent == 0)
3546 wpa_s->num_multichan_concurrent = 1;
3548 if (wpa_supplicant_driver_init(wpa_s) < 0)
3552 if ((!iface->p2p_mgmt ||
3553 !(wpa_s->drv_flags &
3554 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) &&
3555 wpa_tdls_init(wpa_s->wpa))
3557 #endif /* CONFIG_TDLS */
3559 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
3560 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
3561 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
3565 if (wpas_wps_init(wpa_s))
3568 if (wpa_supplicant_init_eapol(wpa_s) < 0)
3570 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
3572 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
3573 if (wpa_s->ctrl_iface == NULL) {
3574 wpa_printf(MSG_ERROR,
3575 "Failed to initialize control interface '%s'.\n"
3576 "You may have another wpa_supplicant process "
3577 "already running or the file was\n"
3578 "left by an unclean termination of wpa_supplicant "
3579 "in which case you will need\n"
3580 "to manually remove this file before starting "
3581 "wpa_supplicant again.\n",
3582 wpa_s->conf->ctrl_interface);
3586 wpa_s->gas = gas_query_init(wpa_s);
3587 if (wpa_s->gas == NULL) {
3588 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
3593 if (iface->p2p_mgmt && wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
3594 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
3597 #endif /* CONFIG_P2P */
3599 if (wpa_bss_init(wpa_s) < 0)
3602 #ifdef CONFIG_EAP_PROXY
3605 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, wpa_s->imsi,
3607 if (wpa_s->mnc_len > 0) {
3608 wpa_s->imsi[len] = '\0';
3609 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
3610 wpa_s->imsi, wpa_s->mnc_len);
3612 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
3615 #endif /* CONFIG_EAP_PROXY */
3617 if (pcsc_reader_init(wpa_s) < 0)
3620 if (wpas_init_ext_pw(wpa_s) < 0)
3627 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
3628 int notify, int terminate)
3630 wpa_s->disconnected = 1;
3631 if (wpa_s->drv_priv) {
3632 wpa_supplicant_deauthenticate(wpa_s,
3633 WLAN_REASON_DEAUTH_LEAVING);
3635 wpa_drv_set_countermeasures(wpa_s, 0);
3636 wpa_clear_keys(wpa_s, NULL);
3639 wpa_supplicant_cleanup(wpa_s);
3642 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
3643 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
3644 "the management interface is being removed");
3645 wpas_p2p_deinit_global(wpa_s->global);
3647 #endif /* CONFIG_P2P */
3649 wpas_ctrl_radio_work_flush(wpa_s);
3650 radio_remove_interface(wpa_s);
3652 if (wpa_s->drv_priv)
3653 wpa_drv_deinit(wpa_s);
3656 wpas_notify_iface_removed(wpa_s);
3659 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING);
3661 if (wpa_s->ctrl_iface) {
3662 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
3663 wpa_s->ctrl_iface = NULL;
3666 if (wpa_s->conf != NULL) {
3667 wpa_config_free(wpa_s->conf);
3676 * wpa_supplicant_add_iface - Add a new network interface
3677 * @global: Pointer to global data from wpa_supplicant_init()
3678 * @iface: Interface configuration options
3679 * Returns: Pointer to the created interface or %NULL on failure
3681 * This function is used to add new network interfaces for %wpa_supplicant.
3682 * This can be called before wpa_supplicant_run() to add interfaces before the
3683 * main event loop has been started. In addition, new interfaces can be added
3684 * dynamically while %wpa_supplicant is already running. This could happen,
3685 * e.g., when a hotplug network adapter is inserted.
3687 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
3688 struct wpa_interface *iface)
3690 struct wpa_supplicant *wpa_s;
3691 struct wpa_interface t_iface;
3692 struct wpa_ssid *ssid;
3694 if (global == NULL || iface == NULL)
3697 wpa_s = wpa_supplicant_alloc();
3701 wpa_s->global = global;
3704 if (global->params.override_driver) {
3705 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
3707 iface->driver, global->params.override_driver);
3708 t_iface.driver = global->params.override_driver;
3710 if (global->params.override_ctrl_interface) {
3711 wpa_printf(MSG_DEBUG, "Override interface parameter: "
3712 "ctrl_interface ('%s' -> '%s')",
3713 iface->ctrl_interface,
3714 global->params.override_ctrl_interface);
3715 t_iface.ctrl_interface =
3716 global->params.override_ctrl_interface;
3718 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
3719 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
3721 wpa_supplicant_deinit_iface(wpa_s, 0, 0);
3725 /* Notify the control interfaces about new iface */
3726 if (wpas_notify_iface_added(wpa_s)) {
3727 wpa_supplicant_deinit_iface(wpa_s, 1, 0);
3731 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
3732 wpas_notify_network_added(wpa_s, ssid);
3734 wpa_s->next = global->ifaces;
3735 global->ifaces = wpa_s;
3737 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
3738 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3745 * wpa_supplicant_remove_iface - Remove a network interface
3746 * @global: Pointer to global data from wpa_supplicant_init()
3747 * @wpa_s: Pointer to the network interface to be removed
3748 * Returns: 0 if interface was removed, -1 if interface was not found
3750 * This function can be used to dynamically remove network interfaces from
3751 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
3752 * addition, this function is used to remove all remaining interfaces when
3753 * %wpa_supplicant is terminated.
3755 int wpa_supplicant_remove_iface(struct wpa_global *global,
3756 struct wpa_supplicant *wpa_s,
3759 struct wpa_supplicant *prev;
3761 /* Remove interface from the global list of interfaces */
3762 prev = global->ifaces;
3763 if (prev == wpa_s) {
3764 global->ifaces = wpa_s->next;
3766 while (prev && prev->next != wpa_s)
3770 prev->next = wpa_s->next;
3773 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
3775 if (global->p2p_group_formation == wpa_s)
3776 global->p2p_group_formation = NULL;
3777 if (global->p2p_invite_group == wpa_s)
3778 global->p2p_invite_group = NULL;
3779 wpa_supplicant_deinit_iface(wpa_s, 1, terminate);
3786 * wpa_supplicant_get_eap_mode - Get the current EAP mode
3787 * @wpa_s: Pointer to the network interface
3788 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
3790 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
3792 const char *eapol_method;
3794 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
3795 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
3799 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
3800 if (eapol_method == NULL)
3801 return "UNKNOWN-EAP";
3803 return eapol_method;
3808 * wpa_supplicant_get_iface - Get a new network interface
3809 * @global: Pointer to global data from wpa_supplicant_init()
3810 * @ifname: Interface name
3811 * Returns: Pointer to the interface or %NULL if not found
3813 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
3816 struct wpa_supplicant *wpa_s;
3818 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3819 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3826 #ifndef CONFIG_NO_WPA_MSG
3827 static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
3829 struct wpa_supplicant *wpa_s = ctx;
3832 return wpa_s->ifname;
3834 #endif /* CONFIG_NO_WPA_MSG */
3838 * wpa_supplicant_init - Initialize %wpa_supplicant
3839 * @params: Parameters for %wpa_supplicant
3840 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
3842 * This function is used to initialize %wpa_supplicant. After successful
3843 * initialization, the returned data pointer can be used to add and remove
3844 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
3846 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
3848 struct wpa_global *global;
3854 #ifdef CONFIG_DRIVER_NDIS
3856 void driver_ndis_init_ops(void);
3857 driver_ndis_init_ops();
3859 #endif /* CONFIG_DRIVER_NDIS */
3861 #ifndef CONFIG_NO_WPA_MSG
3862 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
3863 #endif /* CONFIG_NO_WPA_MSG */
3865 wpa_debug_open_file(params->wpa_debug_file_path);
3866 if (params->wpa_debug_syslog)
3867 wpa_debug_open_syslog();
3868 if (params->wpa_debug_tracing) {
3869 ret = wpa_debug_open_linux_tracing();
3871 wpa_printf(MSG_ERROR,
3872 "Failed to enable trace logging");
3877 ret = eap_register_methods();
3879 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
3881 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
3882 "the same EAP type.");
3886 global = os_zalloc(sizeof(*global));
3889 dl_list_init(&global->p2p_srv_bonjour);
3890 dl_list_init(&global->p2p_srv_upnp);
3891 global->params.daemonize = params->daemonize;
3892 global->params.wait_for_monitor = params->wait_for_monitor;
3893 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
3894 if (params->pid_file)
3895 global->params.pid_file = os_strdup(params->pid_file);
3896 if (params->ctrl_interface)
3897 global->params.ctrl_interface =
3898 os_strdup(params->ctrl_interface);
3899 if (params->ctrl_interface_group)
3900 global->params.ctrl_interface_group =
3901 os_strdup(params->ctrl_interface_group);
3902 if (params->override_driver)
3903 global->params.override_driver =
3904 os_strdup(params->override_driver);
3905 if (params->override_ctrl_interface)
3906 global->params.override_ctrl_interface =
3907 os_strdup(params->override_ctrl_interface);
3908 wpa_debug_level = global->params.wpa_debug_level =
3909 params->wpa_debug_level;
3910 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
3911 params->wpa_debug_show_keys;
3912 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
3913 params->wpa_debug_timestamp;
3915 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
3918 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
3919 wpa_supplicant_deinit(global);
3923 random_init(params->entropy_file);
3925 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
3926 if (global->ctrl_iface == NULL) {
3927 wpa_supplicant_deinit(global);
3931 if (wpas_notify_supplicant_initialized(global)) {
3932 wpa_supplicant_deinit(global);
3936 for (i = 0; wpa_drivers[i]; i++)
3937 global->drv_count++;
3938 if (global->drv_count == 0) {
3939 wpa_printf(MSG_ERROR, "No drivers enabled");
3940 wpa_supplicant_deinit(global);
3943 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
3944 if (global->drv_priv == NULL) {
3945 wpa_supplicant_deinit(global);
3949 #ifdef CONFIG_WIFI_DISPLAY
3950 if (wifi_display_init(global) < 0) {
3951 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display");
3952 wpa_supplicant_deinit(global);
3955 #endif /* CONFIG_WIFI_DISPLAY */
3962 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
3963 * @global: Pointer to global data from wpa_supplicant_init()
3964 * Returns: 0 after successful event loop run, -1 on failure
3966 * This function starts the main event loop and continues running as long as
3967 * there are any remaining events. In most cases, this function is running as
3968 * long as the %wpa_supplicant process in still in use.
3970 int wpa_supplicant_run(struct wpa_global *global)
3972 struct wpa_supplicant *wpa_s;
3974 if (global->params.daemonize &&
3975 wpa_supplicant_daemon(global->params.pid_file))
3978 if (global->params.wait_for_monitor) {
3979 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
3980 if (wpa_s->ctrl_iface)
3981 wpa_supplicant_ctrl_iface_wait(
3985 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
3986 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
3995 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
3996 * @global: Pointer to global data from wpa_supplicant_init()
3998 * This function is called to deinitialize %wpa_supplicant and to free all
3999 * allocated resources. Remaining network interfaces will also be removed.
4001 void wpa_supplicant_deinit(struct wpa_global *global)
4008 #ifdef CONFIG_WIFI_DISPLAY
4009 wifi_display_deinit(global);
4010 #endif /* CONFIG_WIFI_DISPLAY */
4012 while (global->ifaces)
4013 wpa_supplicant_remove_iface(global, global->ifaces, 1);
4015 if (global->ctrl_iface)
4016 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
4018 wpas_notify_supplicant_deinitialized(global);
4020 eap_peer_unregister_methods();
4022 eap_server_unregister_methods();
4023 #endif /* CONFIG_AP */
4025 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
4026 if (!global->drv_priv[i])
4028 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
4030 os_free(global->drv_priv);
4036 if (global->params.pid_file) {
4037 os_daemonize_terminate(global->params.pid_file);
4038 os_free(global->params.pid_file);
4040 os_free(global->params.ctrl_interface);
4041 os_free(global->params.ctrl_interface_group);
4042 os_free(global->params.override_driver);
4043 os_free(global->params.override_ctrl_interface);
4045 os_free(global->p2p_disallow_freq.range);
4046 os_free(global->p2p_go_avoid_freq.range);
4047 os_free(global->add_psk);
4050 wpa_debug_close_syslog();
4051 wpa_debug_close_file();
4052 wpa_debug_close_linux_tracing();
4056 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
4058 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4059 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4061 country[0] = wpa_s->conf->country[0];
4062 country[1] = wpa_s->conf->country[1];
4064 if (wpa_drv_set_country(wpa_s, country) < 0) {
4065 wpa_printf(MSG_ERROR, "Failed to set country code "
4070 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND)
4071 wpas_init_ext_pw(wpa_s);
4074 wpas_wps_update_config(wpa_s);
4075 #endif /* CONFIG_WPS */
4078 wpas_p2p_update_config(wpa_s);
4079 #endif /* CONFIG_P2P */
4081 wpa_s->conf->changed_parameters = 0;
4085 static void add_freq(int *freqs, int *num_freqs, int freq)
4089 for (i = 0; i < *num_freqs; i++) {
4090 if (freqs[i] == freq)
4094 freqs[*num_freqs] = freq;
4099 static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
4101 struct wpa_bss *bss, *cbss;
4102 const int max_freqs = 10;
4106 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
4110 cbss = wpa_s->current_bss;
4112 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
4115 if (bss->ssid_len == cbss->ssid_len &&
4116 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
4117 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
4118 add_freq(freqs, &num_freqs, bss->freq);
4119 if (num_freqs == max_freqs)
4124 if (num_freqs == 0) {
4133 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
4139 wpas_connect_work_done(wpa_s);
4142 * Remove possible authentication timeout since the connection failed.
4144 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
4146 if (wpa_s->disconnected) {
4148 * There is no point in blacklisting the AP if this event is
4149 * generated based on local request to disconnect.
4151 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore connection failure "
4152 "indication since interface has been put into "
4153 "disconnected state");
4158 * Add the failed BSSID into the blacklist and speed up next scan
4159 * attempt if there could be other APs that could accept association.
4160 * The current blacklist count indicates how many times we have tried
4161 * connecting to this AP and multiple attempts mean that other APs are
4162 * either not available or has already been tried, so that we can start
4163 * increasing the delay here to avoid constant scanning.
4165 count = wpa_blacklist_add(wpa_s, bssid);
4166 if (count == 1 && wpa_s->current_bss) {
4168 * This BSS was not in the blacklist before. If there is
4169 * another BSS available for the same ESS, we should try that
4170 * next. Otherwise, we may as well try this one once more
4171 * before allowing other, likely worse, ESSes to be considered.
4173 freqs = get_bss_freqs_in_ess(wpa_s);
4175 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
4176 "has been seen; try it next");
4177 wpa_blacklist_add(wpa_s, bssid);
4179 * On the next scan, go through only the known channels
4180 * used in this ESS based on previous scans to speed up
4181 * common load balancing use case.
4183 os_free(wpa_s->next_scan_freqs);
4184 wpa_s->next_scan_freqs = freqs;
4189 * Add previous failure count in case the temporary blacklist was
4190 * cleared due to no other BSSes being available.
4192 count += wpa_s->extra_blacklist_count;
4194 if (count > 3 && wpa_s->current_ssid) {
4195 wpa_printf(MSG_DEBUG, "Continuous association failures - "
4196 "consider temporary network disabling");
4197 wpas_auth_failed(wpa_s);
4218 wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d "
4219 "ms", count, timeout);
4222 * TODO: if more than one possible AP is available in scan results,
4223 * could try the other ones before requesting a new scan.
4225 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
4226 1000 * (timeout % 1000));
4230 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
4232 return wpa_s->conf->ap_scan == 2 ||
4233 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);
4237 #if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW)
4238 int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s,
4239 struct wpa_ssid *ssid,
4243 #ifdef IEEE8021X_EAPOL
4244 struct eap_peer_config *eap = &ssid->eap;
4246 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field);
4247 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value",
4248 (const u8 *) value, os_strlen(value));
4250 switch (wpa_supplicant_ctrl_req_from_string(field)) {
4251 case WPA_CTRL_REQ_EAP_IDENTITY:
4252 os_free(eap->identity);
4253 eap->identity = (u8 *) os_strdup(value);
4254 eap->identity_len = os_strlen(value);
4255 eap->pending_req_identity = 0;
4256 if (ssid == wpa_s->current_ssid)
4257 wpa_s->reassociate = 1;
4259 case WPA_CTRL_REQ_EAP_PASSWORD:
4260 os_free(eap->password);
4261 eap->password = (u8 *) os_strdup(value);
4262 eap->password_len = os_strlen(value);
4263 eap->pending_req_password = 0;
4264 if (ssid == wpa_s->current_ssid)
4265 wpa_s->reassociate = 1;
4267 case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
4268 os_free(eap->new_password);
4269 eap->new_password = (u8 *) os_strdup(value);
4270 eap->new_password_len = os_strlen(value);
4271 eap->pending_req_new_password = 0;
4272 if (ssid == wpa_s->current_ssid)
4273 wpa_s->reassociate = 1;
4275 case WPA_CTRL_REQ_EAP_PIN:
4277 eap->pin = os_strdup(value);
4278 eap->pending_req_pin = 0;
4279 if (ssid == wpa_s->current_ssid)
4280 wpa_s->reassociate = 1;
4282 case WPA_CTRL_REQ_EAP_OTP:
4284 eap->otp = (u8 *) os_strdup(value);
4285 eap->otp_len = os_strlen(value);
4286 os_free(eap->pending_req_otp);
4287 eap->pending_req_otp = NULL;
4288 eap->pending_req_otp_len = 0;
4290 case WPA_CTRL_REQ_EAP_PASSPHRASE:
4291 os_free(eap->private_key_passwd);
4292 eap->private_key_passwd = (u8 *) os_strdup(value);
4293 eap->pending_req_passphrase = 0;
4294 if (ssid == wpa_s->current_ssid)
4295 wpa_s->reassociate = 1;
4297 case WPA_CTRL_REQ_SIM:
4298 os_free(eap->external_sim_resp);
4299 eap->external_sim_resp = os_strdup(value);
4302 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field);
4307 #else /* IEEE8021X_EAPOL */
4308 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included");
4310 #endif /* IEEE8021X_EAPOL */
4312 #endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */
4315 int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
4318 unsigned int drv_enc;
4326 if (wpa_s && wpa_s->drv_capa_known)
4327 drv_enc = wpa_s->drv_enc;
4329 drv_enc = (unsigned int) -1;
4331 for (i = 0; i < NUM_WEP_KEYS; i++) {
4332 size_t len = ssid->wep_key_len[i];
4335 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40))
4337 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104))
4339 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128))
4341 return 1; /* invalid WEP key */
4344 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
4352 int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s)
4354 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P)
4356 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA)
4362 void wpas_auth_failed(struct wpa_supplicant *wpa_s)
4364 struct wpa_ssid *ssid = wpa_s->current_ssid;
4366 struct os_reltime now;
4369 wpa_printf(MSG_DEBUG, "Authentication failure but no known "
4374 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
4377 ssid->auth_failures++;
4380 if (ssid->p2p_group &&
4381 (wpa_s->p2p_in_provisioning || wpa_s->show_group_started)) {
4383 * Skip the wait time since there is a short timeout on the
4384 * connection to a P2P group.
4388 #endif /* CONFIG_P2P */
4390 if (ssid->auth_failures > 50)
4392 else if (ssid->auth_failures > 10)
4394 else if (ssid->auth_failures > 5)
4396 else if (ssid->auth_failures > 3)
4398 else if (ssid->auth_failures > 2)
4400 else if (ssid->auth_failures > 1)
4405 if (ssid->auth_failures > 1 &&
4406 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt))
4407 dur += os_random() % (ssid->auth_failures * 10);
4409 os_get_reltime(&now);
4410 if (now.sec + dur <= ssid->disabled_until.sec)
4413 ssid->disabled_until.sec = now.sec + dur;
4415 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED
4416 "id=%d ssid=\"%s\" auth_failures=%u duration=%d",
4417 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
4418 ssid->auth_failures, dur);
4422 void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s,
4423 struct wpa_ssid *ssid, int clear_failures)
4428 if (ssid->disabled_until.sec) {
4429 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED
4430 "id=%d ssid=\"%s\"",
4431 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
4433 ssid->disabled_until.sec = 0;
4434 ssid->disabled_until.usec = 0;
4436 ssid->auth_failures = 0;
4440 int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid)
4444 if (wpa_s->disallow_aps_bssid == NULL)
4447 for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) {
4448 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN,
4449 bssid, ETH_ALEN) == 0)
4457 int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid,
4462 if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL)
4465 for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) {
4466 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i];
4467 if (ssid_len == s->ssid_len &&
4468 os_memcmp(ssid, s->ssid, ssid_len) == 0)
4477 * wpas_request_connection - Request a new connection
4478 * @wpa_s: Pointer to the network interface
4480 * This function is used to request a new connection to be found. It will mark
4481 * the interface to allow reassociation and request a new scan to find a
4482 * suitable network to connect to.
4484 void wpas_request_connection(struct wpa_supplicant *wpa_s)
4486 wpa_s->normal_scans = 0;
4487 wpa_supplicant_reinit_autoscan(wpa_s);
4488 wpa_s->extra_blacklist_count = 0;
4489 wpa_s->disconnected = 0;
4490 wpa_s->reassociate = 1;
4492 if (wpa_supplicant_fast_associate(wpa_s) != 1)
4493 wpa_supplicant_req_scan(wpa_s, 0, 0);
4497 void dump_freq_array(struct wpa_supplicant *wpa_s, const char *title,
4498 int *freq_array, unsigned int len)
4502 wpa_dbg(wpa_s, MSG_DEBUG, "Shared frequencies (len=%u): %s",
4504 for (i = 0; i < len; i++)
4505 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d", i, freq_array[i]);
4510 * Find the operating frequencies of any of the virtual interfaces that
4511 * are using the same radio as the current interface.
4513 int get_shared_radio_freqs(struct wpa_supplicant *wpa_s,
4514 int *freq_array, unsigned int len)
4516 struct wpa_supplicant *ifs;
4519 unsigned int idx = 0, i;
4521 wpa_dbg(wpa_s, MSG_DEBUG,
4522 "Determining shared radio frequencies (max len %u)", len);
4523 os_memset(freq_array, 0, sizeof(int) * len);
4525 /* First add the frequency of the local interface */
4526 if (wpa_s->current_ssid != NULL && wpa_s->assoc_freq != 0) {
4527 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
4528 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)
4529 freq_array[idx++] = wpa_s->current_ssid->frequency;
4530 else if (wpa_drv_get_bssid(wpa_s, bssid) == 0)
4531 freq_array[idx++] = wpa_s->assoc_freq;
4534 /* If get_radio_name is not supported, use only the local freq */
4535 if (!wpa_driver_get_radio_name(wpa_s)) {
4536 freq = wpa_drv_shared_freq(wpa_s);
4537 if (freq > 0 && idx < len &&
4538 (idx == 0 || freq_array[0] != freq))
4539 freq_array[idx++] = freq;
4540 dump_freq_array(wpa_s, "No get_radio_name", freq_array, idx);
4544 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
4549 if (ifs->current_ssid == NULL || ifs->assoc_freq == 0)
4552 if (ifs->current_ssid->mode == WPAS_MODE_AP ||
4553 ifs->current_ssid->mode == WPAS_MODE_P2P_GO)
4554 freq = ifs->current_ssid->frequency;
4555 else if (wpa_drv_get_bssid(ifs, bssid) == 0)
4556 freq = ifs->assoc_freq;
4560 /* Hold only distinct freqs */
4561 for (i = 0; i < idx; i++)
4562 if (freq_array[i] == freq)
4566 freq_array[idx++] = freq;
4569 dump_freq_array(wpa_s, "completed iteration", freq_array, idx);