3 * Copyright (c) 2003-2012, 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_server/eap_methods.h"
21 #include "rsn_supp/wpa.h"
24 #include "utils/ext_password.h"
25 #include "l2_packet/l2_packet.h"
26 #include "wpa_supplicant_i.h"
28 #include "ctrl_iface.h"
29 #include "pcsc_funcs.h"
30 #include "common/version.h"
31 #include "rsn_supp/preauth.h"
32 #include "rsn_supp/pmksa_cache.h"
33 #include "common/wpa_ctrl.h"
34 #include "common/ieee802_11_defs.h"
36 #include "blacklist.h"
37 #include "wpas_glue.h"
38 #include "wps_supplicant.h"
41 #include "gas_query.h"
43 #include "p2p_supplicant.h"
44 #include "wifi_display.h"
50 #include "offchannel.h"
51 #include "hs20_supplicant.h"
53 const char *wpa_supplicant_version =
54 "wpa_supplicant v" VERSION_STR "\n"
55 "Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi> and contributors";
57 const char *wpa_supplicant_license =
58 "This software may be distributed under the terms of the BSD license.\n"
59 "See README for more details.\n"
60 #ifdef EAP_TLS_OPENSSL
61 "\nThis product includes software developed by the OpenSSL Project\n"
62 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
63 #endif /* EAP_TLS_OPENSSL */
66 #ifndef CONFIG_NO_STDOUT_DEBUG
67 /* Long text divided into parts in order to fit in C89 strings size limits. */
68 const char *wpa_supplicant_full_license1 =
70 const char *wpa_supplicant_full_license2 =
71 "This software may be distributed under the terms of the BSD license.\n"
73 "Redistribution and use in source and binary forms, with or without\n"
74 "modification, are permitted provided that the following conditions are\n"
77 const char *wpa_supplicant_full_license3 =
78 "1. Redistributions of source code must retain the above copyright\n"
79 " notice, this list of conditions and the following disclaimer.\n"
81 "2. Redistributions in binary form must reproduce the above copyright\n"
82 " notice, this list of conditions and the following disclaimer in the\n"
83 " documentation and/or other materials provided with the distribution.\n"
85 const char *wpa_supplicant_full_license4 =
86 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
87 " names of its contributors may be used to endorse or promote products\n"
88 " derived from this software without specific prior written permission.\n"
90 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
91 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
92 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
93 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
94 const char *wpa_supplicant_full_license5 =
95 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
96 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
97 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
98 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
99 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
100 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
101 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
103 #endif /* CONFIG_NO_STDOUT_DEBUG */
105 extern int wpa_debug_level;
106 extern int wpa_debug_show_keys;
107 extern int wpa_debug_timestamp;
108 extern struct wpa_driver_ops *wpa_drivers[];
110 /* Configure default/group WEP keys for static WEP */
111 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
115 for (i = 0; i < NUM_WEP_KEYS; i++) {
116 if (ssid->wep_key_len[i] == 0)
120 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
121 i, i == ssid->wep_tx_keyidx, NULL, 0,
122 ssid->wep_key[i], ssid->wep_key_len[i]);
129 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
130 struct wpa_ssid *ssid)
137 /* IBSS/WPA-None uses only one key (Group) for both receiving and
138 * sending unicast and multicast packets. */
140 if (ssid->mode != WPAS_MODE_IBSS) {
141 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
142 "IBSS/ad-hoc) for WPA-None", ssid->mode);
146 if (!ssid->psk_set) {
147 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
152 switch (wpa_s->group_cipher) {
153 case WPA_CIPHER_CCMP:
154 os_memcpy(key, ssid->psk, 16);
158 case WPA_CIPHER_GCMP:
159 os_memcpy(key, ssid->psk, 16);
163 case WPA_CIPHER_TKIP:
164 /* WPA-None uses the same Michael MIC key for both TX and RX */
165 os_memcpy(key, ssid->psk, 16 + 8);
166 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
171 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
172 "WPA-None", wpa_s->group_cipher);
176 /* TODO: should actually remember the previously used seq#, both for TX
177 * and RX from each STA.. */
179 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
183 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
185 struct wpa_supplicant *wpa_s = eloop_ctx;
186 const u8 *bssid = wpa_s->bssid;
187 if (is_zero_ether_addr(bssid))
188 bssid = wpa_s->pending_bssid;
189 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
191 wpa_blacklist_add(wpa_s, bssid);
192 wpa_sm_notify_disassoc(wpa_s->wpa);
193 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
194 wpa_s->reassociate = 1;
197 * If we timed out, the AP or the local radio may be busy.
198 * So, wait a second until scanning again.
200 wpa_supplicant_req_scan(wpa_s, 1, 0);
203 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
204 wpa_s->global->p2p != NULL) {
205 wpa_s->global->p2p_cb_on_scan_complete = 0;
206 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
207 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
208 "continued after timed out authentication");
211 #endif /* CONFIG_P2P */
216 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
217 * @wpa_s: Pointer to wpa_supplicant data
218 * @sec: Number of seconds after which to time out authentication
219 * @usec: Number of microseconds after which to time out authentication
221 * This function is used to schedule a timeout for the current authentication
224 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
227 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
228 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
231 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
232 "%d usec", sec, usec);
233 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
234 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
239 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
240 * @wpa_s: Pointer to wpa_supplicant data
242 * This function is used to cancel authentication timeout scheduled with
243 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
246 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
248 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
249 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
250 wpa_blacklist_del(wpa_s, wpa_s->bssid);
255 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
256 * @wpa_s: Pointer to wpa_supplicant data
258 * This function is used to configure EAPOL state machine based on the selected
259 * authentication mode.
261 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
263 #ifdef IEEE8021X_EAPOL
264 struct eapol_config eapol_conf;
265 struct wpa_ssid *ssid = wpa_s->current_ssid;
267 #ifdef CONFIG_IBSS_RSN
268 if (ssid->mode == WPAS_MODE_IBSS &&
269 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
270 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
272 * RSN IBSS authentication is per-STA and we can disable the
273 * per-BSSID EAPOL authentication.
275 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
276 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
277 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
280 #endif /* CONFIG_IBSS_RSN */
282 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
283 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
286 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
287 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
289 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
291 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
292 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
293 eapol_conf.accept_802_1x_keys = 1;
294 eapol_conf.required_keys = 0;
295 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
296 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
298 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
299 eapol_conf.required_keys |=
300 EAPOL_REQUIRE_KEY_BROADCAST;
303 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
304 eapol_conf.required_keys = 0;
307 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
308 eapol_conf.workaround = ssid->eap_workaround;
309 eapol_conf.eap_disabled =
310 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
311 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
312 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
313 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
314 #endif /* IEEE8021X_EAPOL */
319 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
320 * @wpa_s: Pointer to wpa_supplicant data
321 * @ssid: Configuration data for the network
323 * This function is used to configure WPA state machine and related parameters
324 * to a mode where WPA is not enabled. This is called as part of the
325 * authentication configuration when the selected network does not use WPA.
327 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
328 struct wpa_ssid *ssid)
332 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
333 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
334 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
335 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
337 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
338 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
339 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
340 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
341 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
342 wpa_s->group_cipher = WPA_CIPHER_NONE;
343 wpa_s->mgmt_group_cipher = 0;
345 for (i = 0; i < NUM_WEP_KEYS; i++) {
346 if (ssid->wep_key_len[i] > 5) {
347 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
348 wpa_s->group_cipher = WPA_CIPHER_WEP104;
350 } else if (ssid->wep_key_len[i] > 0) {
351 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
352 wpa_s->group_cipher = WPA_CIPHER_WEP40;
357 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
358 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
360 wpa_s->pairwise_cipher);
361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
362 #ifdef CONFIG_IEEE80211W
363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
364 wpa_s->mgmt_group_cipher);
365 #endif /* CONFIG_IEEE80211W */
367 pmksa_cache_clear_current(wpa_s->wpa);
371 void free_hw_features(struct wpa_supplicant *wpa_s)
374 if (wpa_s->hw.modes == NULL)
377 for (i = 0; i < wpa_s->hw.num_modes; i++) {
378 os_free(wpa_s->hw.modes[i].channels);
379 os_free(wpa_s->hw.modes[i].rates);
382 os_free(wpa_s->hw.modes);
383 wpa_s->hw.modes = NULL;
387 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
389 bgscan_deinit(wpa_s);
390 autoscan_deinit(wpa_s);
391 scard_deinit(wpa_s->scard);
393 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
394 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
395 l2_packet_deinit(wpa_s->l2);
398 l2_packet_deinit(wpa_s->l2_br);
402 if (wpa_s->conf != NULL) {
403 struct wpa_ssid *ssid;
404 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
405 wpas_notify_network_removed(wpa_s, ssid);
408 os_free(wpa_s->confname);
409 wpa_s->confname = NULL;
411 wpa_sm_set_eapol(wpa_s->wpa, NULL);
412 eapol_sm_deinit(wpa_s->eapol);
415 rsn_preauth_deinit(wpa_s->wpa);
418 wpa_tdls_deinit(wpa_s->wpa);
419 #endif /* CONFIG_TDLS */
421 pmksa_candidate_free(wpa_s->wpa);
422 wpa_sm_deinit(wpa_s->wpa);
424 wpa_blacklist_clear(wpa_s);
426 wpa_bss_deinit(wpa_s);
428 wpa_supplicant_cancel_scan(wpa_s);
429 wpa_supplicant_cancel_auth_timeout(wpa_s);
430 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL);
431 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
432 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report,
434 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
436 wpas_wps_deinit(wpa_s);
438 wpabuf_free(wpa_s->pending_eapol_rx);
439 wpa_s->pending_eapol_rx = NULL;
441 #ifdef CONFIG_IBSS_RSN
442 ibss_rsn_deinit(wpa_s->ibss_rsn);
443 wpa_s->ibss_rsn = NULL;
444 #endif /* CONFIG_IBSS_RSN */
449 wpa_supplicant_ap_deinit(wpa_s);
450 #endif /* CONFIG_AP */
453 wpas_p2p_deinit(wpa_s);
454 #endif /* CONFIG_P2P */
456 #ifdef CONFIG_OFFCHANNEL
457 offchannel_deinit(wpa_s);
458 #endif /* CONFIG_OFFCHANNEL */
460 wpa_supplicant_cancel_sched_scan(wpa_s);
462 os_free(wpa_s->next_scan_freqs);
463 wpa_s->next_scan_freqs = NULL;
465 gas_query_deinit(wpa_s->gas);
468 free_hw_features(wpa_s);
470 os_free(wpa_s->bssid_filter);
471 wpa_s->bssid_filter = NULL;
473 os_free(wpa_s->disallow_aps_bssid);
474 wpa_s->disallow_aps_bssid = NULL;
475 os_free(wpa_s->disallow_aps_ssid);
476 wpa_s->disallow_aps_ssid = NULL;
478 wnm_bss_keep_alive_deinit(wpa_s);
480 ext_password_deinit(wpa_s->ext_pw);
481 wpa_s->ext_pw = NULL;
483 wpabuf_free(wpa_s->last_gas_resp);
485 os_free(wpa_s->last_scan_res);
486 wpa_s->last_scan_res = NULL;
491 * wpa_clear_keys - Clear keys configured for the driver
492 * @wpa_s: Pointer to wpa_supplicant data
493 * @addr: Previously used BSSID or %NULL if not available
495 * This function clears the encryption keys that has been previously configured
498 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
500 if (wpa_s->keys_cleared) {
501 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
502 * timing issues with keys being cleared just before new keys
503 * are set or just after association or something similar. This
504 * shows up in group key handshake failing often because of the
505 * client not receiving the first encrypted packets correctly.
506 * Skipping some of the extra key clearing steps seems to help
507 * in completing group key handshake more reliably. */
508 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - "
509 "skip key clearing");
513 /* MLME-DELETEKEYS.request */
514 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0);
515 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0);
516 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0);
517 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0);
518 #ifdef CONFIG_IEEE80211W
519 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0);
520 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0);
521 #endif /* CONFIG_IEEE80211W */
523 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
525 /* MLME-SETPROTECTION.request(None) */
526 wpa_drv_mlme_setprotection(
528 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
529 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
531 wpa_s->keys_cleared = 1;
536 * wpa_supplicant_state_txt - Get the connection state name as a text string
537 * @state: State (wpa_state; WPA_*)
538 * Returns: The state name as a printable text string
540 const char * wpa_supplicant_state_txt(enum wpa_states state)
543 case WPA_DISCONNECTED:
544 return "DISCONNECTED";
547 case WPA_INTERFACE_DISABLED:
548 return "INTERFACE_DISABLED";
551 case WPA_AUTHENTICATING:
552 return "AUTHENTICATING";
553 case WPA_ASSOCIATING:
554 return "ASSOCIATING";
557 case WPA_4WAY_HANDSHAKE:
558 return "4WAY_HANDSHAKE";
559 case WPA_GROUP_HANDSHAKE:
560 return "GROUP_HANDSHAKE";
571 static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
573 if (wpas_driver_bss_selection(wpa_s))
575 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
578 bgscan_deinit(wpa_s);
579 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
580 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
581 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
584 * Live without bgscan; it is only used as a roaming
585 * optimization, so the initial connection is not
589 struct wpa_scan_results *scan_res;
590 wpa_s->bgscan_ssid = wpa_s->current_ssid;
591 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL,
594 bgscan_notify_scan(wpa_s, scan_res);
595 wpa_scan_results_free(scan_res);
599 wpa_s->bgscan_ssid = NULL;
603 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
605 if (wpa_s->bgscan_ssid != NULL) {
606 bgscan_deinit(wpa_s);
607 wpa_s->bgscan_ssid = NULL;
611 #endif /* CONFIG_BGSCAN */
614 static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s)
616 if (autoscan_init(wpa_s, 0))
617 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan");
621 static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s)
623 autoscan_deinit(wpa_s);
627 void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s)
629 if (wpa_s->wpa_state == WPA_DISCONNECTED ||
630 wpa_s->wpa_state == WPA_SCANNING) {
631 autoscan_deinit(wpa_s);
632 wpa_supplicant_start_autoscan(wpa_s);
638 * wpa_supplicant_set_state - Set current connection state
639 * @wpa_s: Pointer to wpa_supplicant data
640 * @state: The new connection state
642 * This function is called whenever the connection state changes, e.g.,
643 * association is completed for WPA/WPA2 4-Way Handshake is started.
645 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
646 enum wpa_states state)
648 enum wpa_states old_state = wpa_s->wpa_state;
650 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
651 wpa_supplicant_state_txt(wpa_s->wpa_state),
652 wpa_supplicant_state_txt(state));
654 if (state != WPA_SCANNING)
655 wpa_supplicant_notify_scanning(wpa_s, 0);
657 if (state == WPA_COMPLETED && wpa_s->new_connection) {
658 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
659 struct wpa_ssid *ssid = wpa_s->current_ssid;
660 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
661 MACSTR " completed %s [id=%d id_str=%s]",
662 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
663 "(reauth)" : "(auth)",
664 ssid ? ssid->id : -1,
665 ssid && ssid->id_str ? ssid->id_str : "");
666 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
667 wpas_clear_temp_disabled(wpa_s, ssid, 1);
668 wpa_s->extra_blacklist_count = 0;
669 wpa_s->new_connection = 0;
670 wpa_s->reassociated_connection = 1;
671 wpa_drv_set_operstate(wpa_s, 1);
672 #ifndef IEEE8021X_EAPOL
673 wpa_drv_set_supp_port(wpa_s, 1);
674 #endif /* IEEE8021X_EAPOL */
675 wpa_s->after_wps = 0;
677 wpas_p2p_completed(wpa_s);
678 #endif /* CONFIG_P2P */
680 sme_sched_obss_scan(wpa_s, 1);
681 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
682 state == WPA_ASSOCIATED) {
683 wpa_s->new_connection = 1;
684 wpa_drv_set_operstate(wpa_s, 0);
685 #ifndef IEEE8021X_EAPOL
686 wpa_drv_set_supp_port(wpa_s, 0);
687 #endif /* IEEE8021X_EAPOL */
688 sme_sched_obss_scan(wpa_s, 0);
690 wpa_s->wpa_state = state;
693 if (state == WPA_COMPLETED)
694 wpa_supplicant_start_bgscan(wpa_s);
696 wpa_supplicant_stop_bgscan(wpa_s);
697 #endif /* CONFIG_BGSCAN */
699 if (state == WPA_AUTHENTICATING)
700 wpa_supplicant_stop_autoscan(wpa_s);
702 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE)
703 wpa_supplicant_start_autoscan(wpa_s);
705 if (wpa_s->wpa_state != old_state) {
706 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
708 if (wpa_s->wpa_state == WPA_COMPLETED ||
709 old_state == WPA_COMPLETED)
710 wpas_notify_auth_changed(wpa_s);
715 void wpa_supplicant_terminate_proc(struct wpa_global *global)
719 struct wpa_supplicant *wpa_s = global->ifaces;
721 if (wpas_wps_terminate_pending(wpa_s) == 1)
725 #endif /* CONFIG_WPS */
732 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
734 struct wpa_global *global = signal_ctx;
735 wpa_supplicant_terminate_proc(global);
739 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
741 enum wpa_states old_state = wpa_s->wpa_state;
743 wpa_s->pairwise_cipher = 0;
744 wpa_s->group_cipher = 0;
745 wpa_s->mgmt_group_cipher = 0;
747 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
748 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
750 if (wpa_s->wpa_state != old_state)
751 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
756 * wpa_supplicant_reload_configuration - Reload configuration data
757 * @wpa_s: Pointer to wpa_supplicant data
758 * Returns: 0 on success or -1 if configuration parsing failed
760 * This function can be used to request that the configuration data is reloaded
761 * (e.g., after configuration file change). This function is reloading
762 * configuration only for one interface, so this may need to be called multiple
763 * times if %wpa_supplicant is controlling multiple interfaces and all
764 * interfaces need reconfiguration.
766 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
768 struct wpa_config *conf;
772 if (wpa_s->confname == NULL)
774 conf = wpa_config_read(wpa_s->confname);
776 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
777 "file '%s' - exiting", wpa_s->confname);
780 conf->changed_parameters = (unsigned int) -1;
782 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
783 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
784 os_strcmp(conf->ctrl_interface,
785 wpa_s->conf->ctrl_interface) != 0);
787 if (reconf_ctrl && wpa_s->ctrl_iface) {
788 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
789 wpa_s->ctrl_iface = NULL;
792 eapol_sm_invalidate_cached_session(wpa_s->eapol);
793 if (wpa_s->current_ssid) {
794 wpa_supplicant_deauthenticate(wpa_s,
795 WLAN_REASON_DEAUTH_LEAVING);
799 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
800 * pkcs11_engine_path, pkcs11_module_path.
802 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
804 * Clear forced success to clear EAP state for next
807 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
809 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
810 wpa_sm_set_config(wpa_s->wpa, NULL);
811 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
812 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
813 rsn_preauth_deinit(wpa_s->wpa);
815 old_ap_scan = wpa_s->conf->ap_scan;
816 wpa_config_free(wpa_s->conf);
818 if (old_ap_scan != wpa_s->conf->ap_scan)
819 wpas_notify_ap_scan_changed(wpa_s);
822 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
824 wpa_supplicant_update_config(wpa_s);
826 wpa_supplicant_clear_status(wpa_s);
827 if (wpa_supplicant_enabled_networks(wpa_s)) {
828 wpa_s->reassociate = 1;
829 wpa_supplicant_req_scan(wpa_s, 0, 0);
831 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
836 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
838 struct wpa_global *global = signal_ctx;
839 struct wpa_supplicant *wpa_s;
840 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
841 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
843 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
844 wpa_supplicant_terminate_proc(global);
850 enum wpa_cipher cipher_suite2driver(int cipher)
853 case WPA_CIPHER_NONE:
855 case WPA_CIPHER_WEP40:
857 case WPA_CIPHER_WEP104:
858 return CIPHER_WEP104;
859 case WPA_CIPHER_CCMP:
861 case WPA_CIPHER_GCMP:
863 case WPA_CIPHER_TKIP:
870 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
873 case WPA_KEY_MGMT_NONE:
874 return KEY_MGMT_NONE;
875 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
876 return KEY_MGMT_802_1X_NO_WPA;
877 case WPA_KEY_MGMT_IEEE8021X:
878 return KEY_MGMT_802_1X;
879 case WPA_KEY_MGMT_WPA_NONE:
880 return KEY_MGMT_WPA_NONE;
881 case WPA_KEY_MGMT_FT_IEEE8021X:
882 return KEY_MGMT_FT_802_1X;
883 case WPA_KEY_MGMT_FT_PSK:
884 return KEY_MGMT_FT_PSK;
885 case WPA_KEY_MGMT_IEEE8021X_SHA256:
886 return KEY_MGMT_802_1X_SHA256;
887 case WPA_KEY_MGMT_PSK_SHA256:
888 return KEY_MGMT_PSK_SHA256;
889 case WPA_KEY_MGMT_WPS:
891 case WPA_KEY_MGMT_PSK:
898 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
899 struct wpa_ssid *ssid,
900 struct wpa_ie_data *ie)
902 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
905 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
906 "from association info");
911 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
913 if (!(ie->group_cipher & ssid->group_cipher)) {
914 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
915 "cipher 0x%x (mask 0x%x) - reject",
916 ie->group_cipher, ssid->group_cipher);
919 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
920 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
921 "cipher 0x%x (mask 0x%x) - reject",
922 ie->pairwise_cipher, ssid->pairwise_cipher);
925 if (!(ie->key_mgmt & ssid->key_mgmt)) {
926 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
927 "management 0x%x (mask 0x%x) - reject",
928 ie->key_mgmt, ssid->key_mgmt);
932 #ifdef CONFIG_IEEE80211W
933 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
934 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
935 wpa_s->conf->pmf : ssid->ieee80211w) ==
936 MGMT_FRAME_PROTECTION_REQUIRED) {
937 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
938 "that does not support management frame protection - "
942 #endif /* CONFIG_IEEE80211W */
949 * wpa_supplicant_set_suites - Set authentication and encryption parameters
950 * @wpa_s: Pointer to wpa_supplicant data
951 * @bss: Scan results for the selected BSS, or %NULL if not available
952 * @ssid: Configuration data for the selected network
953 * @wpa_ie: Buffer for the WPA/RSN IE
954 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
955 * used buffer length in case the functions returns success.
956 * Returns: 0 on success or -1 on failure
958 * This function is used to configure authentication and encryption parameters
959 * based on the network configuration and scan result for the selected BSS (if
962 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
963 struct wpa_bss *bss, struct wpa_ssid *ssid,
964 u8 *wpa_ie, size_t *wpa_ie_len)
966 struct wpa_ie_data ie;
968 const u8 *bss_wpa, *bss_rsn;
971 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
972 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
974 bss_wpa = bss_rsn = NULL;
976 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
977 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
978 (ie.group_cipher & ssid->group_cipher) &&
979 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
980 (ie.key_mgmt & ssid->key_mgmt)) {
981 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
982 proto = WPA_PROTO_RSN;
983 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
984 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
985 (ie.group_cipher & ssid->group_cipher) &&
986 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
987 (ie.key_mgmt & ssid->key_mgmt)) {
988 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
989 proto = WPA_PROTO_WPA;
991 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
994 if (ssid->proto & WPA_PROTO_RSN)
995 proto = WPA_PROTO_RSN;
997 proto = WPA_PROTO_WPA;
998 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
999 os_memset(&ie, 0, sizeof(ie));
1000 ie.group_cipher = ssid->group_cipher;
1001 ie.pairwise_cipher = ssid->pairwise_cipher;
1002 ie.key_mgmt = ssid->key_mgmt;
1003 #ifdef CONFIG_IEEE80211W
1004 ie.mgmt_group_cipher =
1005 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
1006 WPA_CIPHER_AES_128_CMAC : 0;
1007 #endif /* CONFIG_IEEE80211W */
1008 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
1009 "based on configuration");
1014 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
1015 "pairwise %d key_mgmt %d proto %d",
1016 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
1017 #ifdef CONFIG_IEEE80211W
1018 if (ssid->ieee80211w) {
1019 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
1020 ie.mgmt_group_cipher);
1022 #endif /* CONFIG_IEEE80211W */
1024 wpa_s->wpa_proto = proto;
1025 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
1026 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
1027 !!(ssid->proto & WPA_PROTO_RSN));
1029 if (bss || !wpa_s->ap_ies_from_associnfo) {
1030 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1031 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1032 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1033 bss_rsn ? 2 + bss_rsn[1] : 0))
1037 sel = ie.group_cipher & ssid->group_cipher;
1038 if (sel & WPA_CIPHER_CCMP) {
1039 wpa_s->group_cipher = WPA_CIPHER_CCMP;
1040 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
1041 } else if (sel & WPA_CIPHER_GCMP) {
1042 wpa_s->group_cipher = WPA_CIPHER_GCMP;
1043 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK GCMP");
1044 } else if (sel & WPA_CIPHER_TKIP) {
1045 wpa_s->group_cipher = WPA_CIPHER_TKIP;
1046 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
1047 } else if (sel & WPA_CIPHER_WEP104) {
1048 wpa_s->group_cipher = WPA_CIPHER_WEP104;
1049 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
1050 } else if (sel & WPA_CIPHER_WEP40) {
1051 wpa_s->group_cipher = WPA_CIPHER_WEP40;
1052 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
1054 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
1059 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
1060 if (sel & WPA_CIPHER_CCMP) {
1061 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
1062 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
1063 } else if (sel & WPA_CIPHER_GCMP) {
1064 wpa_s->pairwise_cipher = WPA_CIPHER_GCMP;
1065 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK GCMP");
1066 } else if (sel & WPA_CIPHER_TKIP) {
1067 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
1068 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
1069 } else if (sel & WPA_CIPHER_NONE) {
1070 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
1071 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
1073 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
1078 sel = ie.key_mgmt & ssid->key_mgmt;
1080 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE))
1081 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE);
1082 #endif /* CONFIG_SAE */
1084 #ifdef CONFIG_IEEE80211R
1085 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
1086 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
1087 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
1088 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1089 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
1090 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
1091 #endif /* CONFIG_IEEE80211R */
1093 } else if (sel & WPA_KEY_MGMT_SAE) {
1094 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE;
1095 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE");
1096 } else if (sel & WPA_KEY_MGMT_FT_SAE) {
1097 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE;
1098 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE");
1099 #endif /* CONFIG_SAE */
1100 #ifdef CONFIG_IEEE80211W
1101 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1102 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
1103 wpa_dbg(wpa_s, MSG_DEBUG,
1104 "WPA: using KEY_MGMT 802.1X with SHA256");
1105 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1106 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
1107 wpa_dbg(wpa_s, MSG_DEBUG,
1108 "WPA: using KEY_MGMT PSK with SHA256");
1109 #endif /* CONFIG_IEEE80211W */
1110 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1111 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1112 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
1113 } else if (sel & WPA_KEY_MGMT_PSK) {
1114 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
1115 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
1116 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1117 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
1118 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
1120 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1121 "authenticated key management type");
1125 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1126 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1127 wpa_s->pairwise_cipher);
1128 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1130 #ifdef CONFIG_IEEE80211W
1131 sel = ie.mgmt_group_cipher;
1132 if ((ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1133 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION ||
1134 !(ie.capabilities & WPA_CAPABILITY_MFPC))
1136 if (sel & WPA_CIPHER_AES_128_CMAC) {
1137 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1138 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1141 wpa_s->mgmt_group_cipher = 0;
1142 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
1144 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1145 wpa_s->mgmt_group_cipher);
1146 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP,
1147 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1148 wpa_s->conf->pmf : ssid->ieee80211w));
1149 #endif /* CONFIG_IEEE80211W */
1151 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
1152 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
1156 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
1157 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
1158 #ifndef CONFIG_NO_PBKDF2
1159 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1162 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len,
1163 4096, psk, PMK_LEN);
1164 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1166 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1168 #endif /* CONFIG_NO_PBKDF2 */
1169 #ifdef CONFIG_EXT_PASSWORD
1170 if (ssid->ext_psk) {
1171 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw,
1173 char pw_str[64 + 1];
1177 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK "
1178 "found from external storage");
1182 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) {
1183 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected "
1184 "PSK length %d in external storage",
1185 (int) wpabuf_len(pw));
1186 ext_password_free(pw);
1190 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw));
1191 pw_str[wpabuf_len(pw)] = '\0';
1193 #ifndef CONFIG_NO_PBKDF2
1194 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss)
1196 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len,
1197 4096, psk, PMK_LEN);
1198 os_memset(pw_str, 0, sizeof(pw_str));
1199 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from "
1200 "external passphrase)",
1202 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1204 #endif /* CONFIG_NO_PBKDF2 */
1205 if (wpabuf_len(pw) == 2 * PMK_LEN) {
1206 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) {
1207 wpa_msg(wpa_s, MSG_INFO, "EXT PW: "
1208 "Invalid PSK hex string");
1209 os_memset(pw_str, 0, sizeof(pw_str));
1210 ext_password_free(pw);
1213 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1215 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable "
1217 os_memset(pw_str, 0, sizeof(pw_str));
1218 ext_password_free(pw);
1222 os_memset(pw_str, 0, sizeof(pw_str));
1223 ext_password_free(pw);
1225 #endif /* CONFIG_EXT_PASSWORD */
1227 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1234 * wpa_supplicant_associate - Request association
1235 * @wpa_s: Pointer to wpa_supplicant data
1236 * @bss: Scan results for the selected BSS, or %NULL if not available
1237 * @ssid: Configuration data for the selected network
1239 * This function is used to request %wpa_supplicant to associate with a BSS.
1241 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
1242 struct wpa_bss *bss, struct wpa_ssid *ssid)
1246 int use_crypt, ret, i, bssid_changed;
1247 int algs = WPA_AUTH_ALG_OPEN;
1248 enum wpa_cipher cipher_pairwise, cipher_group;
1249 struct wpa_driver_associate_params params;
1250 int wep_keys_set = 0;
1251 struct wpa_driver_capa capa;
1252 int assoc_failed = 0;
1253 struct wpa_ssid *old_ssid;
1255 #ifdef CONFIG_HT_OVERRIDES
1256 struct ieee80211_ht_capabilities htcaps;
1257 struct ieee80211_ht_capabilities htcaps_mask;
1258 #endif /* CONFIG_HT_OVERRIDES */
1260 #ifdef CONFIG_IBSS_RSN
1261 ibss_rsn_deinit(wpa_s->ibss_rsn);
1262 wpa_s->ibss_rsn = NULL;
1263 #endif /* CONFIG_IBSS_RSN */
1265 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1266 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1268 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1269 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1273 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) {
1274 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1277 wpa_s->current_bss = bss;
1278 #else /* CONFIG_AP */
1279 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1281 #endif /* CONFIG_AP */
1287 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1289 #endif /* CONFIG_TDLS */
1291 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1292 ssid->mode == IEEE80211_MODE_INFRA) {
1293 sme_authenticate(wpa_s, bss, ssid);
1297 os_memset(¶ms, 0, sizeof(params));
1298 wpa_s->reassociate = 0;
1299 if (bss && !wpas_driver_bss_selection(wpa_s)) {
1300 #ifdef CONFIG_IEEE80211R
1301 const u8 *ie, *md = NULL;
1302 #endif /* CONFIG_IEEE80211R */
1303 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1304 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1305 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
1306 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1307 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1308 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1310 wpas_notify_bssid_changed(wpa_s);
1311 #ifdef CONFIG_IEEE80211R
1312 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1313 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1315 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
1317 /* Prepare for the next transition */
1318 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
1320 #endif /* CONFIG_IEEE80211R */
1322 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1323 wpa_s->conf->ap_scan == 2 &&
1324 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1325 /* Use ap_scan==1 style network selection to find the network
1327 wpa_s->scan_req = MANUAL_SCAN_REQ;
1328 wpa_s->reassociate = 1;
1329 wpa_supplicant_req_scan(wpa_s, 0, 0);
1331 #endif /* CONFIG_WPS */
1333 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1334 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1335 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1337 wpa_supplicant_cancel_sched_scan(wpa_s);
1338 wpa_supplicant_cancel_scan(wpa_s);
1340 /* Starting new association, so clear the possibly used WPA IE from the
1341 * previous association. */
1342 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1344 #ifdef IEEE8021X_EAPOL
1345 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1347 if (ssid->non_leap == 0)
1348 algs = WPA_AUTH_ALG_LEAP;
1350 algs |= WPA_AUTH_ALG_LEAP;
1353 #endif /* IEEE8021X_EAPOL */
1354 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1355 if (ssid->auth_alg) {
1356 algs = ssid->auth_alg;
1357 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1361 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1362 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
1363 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
1364 int try_opportunistic;
1365 try_opportunistic = (ssid->proactive_key_caching < 0 ?
1367 ssid->proactive_key_caching) &&
1368 (ssid->proto & WPA_PROTO_RSN);
1369 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1370 wpa_s->current_ssid,
1371 try_opportunistic) == 0)
1372 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1373 wpa_ie_len = sizeof(wpa_ie);
1374 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1375 wpa_ie, &wpa_ie_len)) {
1376 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1377 "key management and encryption suites");
1380 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss &&
1381 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
1383 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
1384 * use non-WPA since the scan results did not indicate that the
1385 * AP is using WPA or WPA2.
1387 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1389 wpa_s->wpa_proto = 0;
1390 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
1391 wpa_ie_len = sizeof(wpa_ie);
1392 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1393 wpa_ie, &wpa_ie_len)) {
1394 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1395 "key management and encryption suites (no "
1400 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1401 struct wpabuf *wps_ie;
1402 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1403 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1404 wpa_ie_len = wpabuf_len(wps_ie);
1405 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1408 wpabuf_free(wps_ie);
1409 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1410 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1411 params.wps = WPS_MODE_PRIVACY;
1413 params.wps = WPS_MODE_OPEN;
1414 wpa_s->wpa_proto = 0;
1415 #endif /* CONFIG_WPS */
1417 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1419 wpa_s->wpa_proto = 0;
1423 if (wpa_s->global->p2p) {
1427 pos = wpa_ie + wpa_ie_len;
1428 len = sizeof(wpa_ie) - wpa_ie_len;
1429 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
1435 wpa_s->cross_connect_disallowed = 0;
1438 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1440 wpa_s->cross_connect_disallowed =
1441 p2p_get_cross_connect_disallowed(p2p);
1443 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1445 wpa_s->cross_connect_disallowed ?
1446 "disallows" : "allows");
1449 #endif /* CONFIG_P2P */
1452 if (wpa_s->conf->hs20) {
1453 struct wpabuf *hs20;
1454 hs20 = wpabuf_alloc(20);
1456 wpas_hs20_add_indication(hs20);
1457 os_memcpy(wpa_ie + wpa_ie_len, wpabuf_head(hs20),
1459 wpa_ie_len += wpabuf_len(hs20);
1463 #endif /* CONFIG_HS20 */
1466 #ifdef CONFIG_INTERWORKING
1467 if (wpa_s->conf->interworking)
1468 ext_capab |= BIT(31); /* Interworking */
1469 #endif /* CONFIG_INTERWORKING */
1471 ext_capab |= BIT(17); /* WNM-Sleep Mode */
1472 #endif /* CONFIG_WNM */
1476 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
1478 os_memmove(pos + 6, pos, wpa_ie_len - (pos - wpa_ie));
1480 *pos++ = WLAN_EID_EXT_CAPAB;
1482 WPA_PUT_LE32(pos, ext_capab);
1485 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1487 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1488 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1489 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1490 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1491 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1493 if (wpa_set_wep_keys(wpa_s, ssid)) {
1498 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1501 #ifdef IEEE8021X_EAPOL
1502 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1503 if ((ssid->eapol_flags &
1504 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1505 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1509 /* Assume that dynamic WEP-104 keys will be used and
1510 * set cipher suites in order for drivers to expect
1512 cipher_pairwise = cipher_group = CIPHER_WEP104;
1515 #endif /* IEEE8021X_EAPOL */
1517 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1518 /* Set the key before (and later after) association */
1519 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1522 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1524 params.ssid = bss->ssid;
1525 params.ssid_len = bss->ssid_len;
1526 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) {
1527 wpa_printf(MSG_DEBUG, "Limit connection to BSSID "
1528 MACSTR " freq=%u MHz based on scan results "
1530 MAC2STR(bss->bssid), bss->freq,
1532 params.bssid = bss->bssid;
1533 params.freq = bss->freq;
1536 params.ssid = ssid->ssid;
1537 params.ssid_len = ssid->ssid_len;
1540 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set &&
1541 wpa_s->conf->ap_scan == 2) {
1542 params.bssid = ssid->bssid;
1543 params.fixed_bssid = 1;
1546 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1548 params.freq = ssid->frequency; /* Initial channel for IBSS */
1549 params.wpa_ie = wpa_ie;
1550 params.wpa_ie_len = wpa_ie_len;
1551 params.pairwise_suite = cipher_pairwise;
1552 params.group_suite = cipher_group;
1553 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1554 params.wpa_proto = wpa_s->wpa_proto;
1555 params.auth_alg = algs;
1556 params.mode = ssid->mode;
1557 params.bg_scan_period = ssid->bg_scan_period;
1558 for (i = 0; i < NUM_WEP_KEYS; i++) {
1559 if (ssid->wep_key_len[i])
1560 params.wep_key[i] = ssid->wep_key[i];
1561 params.wep_key_len[i] = ssid->wep_key_len[i];
1563 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1565 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1566 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1567 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1568 params.passphrase = ssid->passphrase;
1570 params.psk = ssid->psk;
1573 params.drop_unencrypted = use_crypt;
1575 #ifdef CONFIG_IEEE80211W
1576 params.mgmt_frame_protection =
1577 ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1578 wpa_s->conf->pmf : ssid->ieee80211w;
1579 if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) {
1580 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1581 struct wpa_ie_data ie;
1582 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1584 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1585 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1586 "MFP: require MFP");
1587 params.mgmt_frame_protection =
1588 MGMT_FRAME_PROTECTION_REQUIRED;
1591 #endif /* CONFIG_IEEE80211W */
1593 params.p2p = ssid->p2p_group;
1595 if (wpa_s->parent->set_sta_uapsd)
1596 params.uapsd = wpa_s->parent->sta_uapsd;
1600 #ifdef CONFIG_HT_OVERRIDES
1601 os_memset(&htcaps, 0, sizeof(htcaps));
1602 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1603 params.htcaps = (u8 *) &htcaps;
1604 params.htcaps_mask = (u8 *) &htcaps_mask;
1605 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms);
1606 #endif /* CONFIG_HT_OVERRIDES */
1608 ret = wpa_drv_associate(wpa_s, ¶ms);
1610 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1612 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1614 * The driver is known to mean what is saying, so we
1615 * can stop right here; the association will not
1618 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1619 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1620 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1623 /* try to continue anyway; new association will be tried again
1628 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1629 /* Set the key after the association just in case association
1630 * cleared the previously configured key. */
1631 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1632 /* No need to timeout authentication since there is no key
1634 wpa_supplicant_cancel_auth_timeout(wpa_s);
1635 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1636 #ifdef CONFIG_IBSS_RSN
1637 } else if (ssid->mode == WPAS_MODE_IBSS &&
1638 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1639 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1641 * RSN IBSS authentication is per-STA and we can disable the
1642 * per-BSSID authentication.
1644 wpa_supplicant_cancel_auth_timeout(wpa_s);
1645 #endif /* CONFIG_IBSS_RSN */
1647 /* Timeout for IEEE 802.11 authentication and association */
1651 /* give IBSS a bit more time */
1652 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1653 } else if (wpa_s->conf->ap_scan == 1) {
1654 /* give IBSS a bit more time */
1655 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1657 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1660 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1661 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1662 /* Set static WEP keys again */
1663 wpa_set_wep_keys(wpa_s, ssid);
1666 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1668 * Do not allow EAP session resumption between different
1669 * network configurations.
1671 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1673 old_ssid = wpa_s->current_ssid;
1674 wpa_s->current_ssid = ssid;
1675 wpa_s->current_bss = bss;
1676 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1677 wpa_supplicant_initiate_eapol(wpa_s);
1678 if (old_ssid != wpa_s->current_ssid)
1679 wpas_notify_network_changed(wpa_s);
1683 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1686 struct wpa_ssid *old_ssid;
1688 wpa_clear_keys(wpa_s, addr);
1689 old_ssid = wpa_s->current_ssid;
1690 wpa_supplicant_mark_disassoc(wpa_s);
1691 wpa_sm_set_config(wpa_s->wpa, NULL);
1692 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1693 if (old_ssid != wpa_s->current_ssid)
1694 wpas_notify_network_changed(wpa_s);
1695 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1700 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1701 * @wpa_s: Pointer to wpa_supplicant data
1702 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1704 * This function is used to request %wpa_supplicant to deauthenticate from the
1707 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1711 union wpa_event_data event;
1714 wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR
1715 " pending_bssid=" MACSTR " reason=%d state=%s",
1716 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1717 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state));
1719 if (!is_zero_ether_addr(wpa_s->bssid))
1720 addr = wpa_s->bssid;
1721 else if (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1722 (wpa_s->wpa_state == WPA_AUTHENTICATING ||
1723 wpa_s->wpa_state == WPA_ASSOCIATING))
1724 addr = wpa_s->pending_bssid;
1725 else if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1727 * When using driver-based BSS selection, we may not know the
1728 * BSSID with which we are currently trying to associate. We
1729 * need to notify the driver of this disconnection even in such
1730 * a case, so use the all zeros address here.
1732 addr = wpa_s->bssid;
1737 wpa_drv_deauthenticate(wpa_s, addr, reason_code);
1738 os_memset(&event, 0, sizeof(event));
1739 event.deauth_info.reason_code = (u16) reason_code;
1740 event.deauth_info.locally_generated = 1;
1741 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event);
1746 wpa_supplicant_clear_connection(wpa_s, addr);
1751 * wpa_supplicant_enable_network - Mark a configured network as enabled
1752 * @wpa_s: wpa_supplicant structure for a network interface
1753 * @ssid: wpa_ssid structure for a configured network or %NULL
1755 * Enables the specified network or all networks if no network specified.
1757 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1758 struct wpa_ssid *ssid)
1760 struct wpa_ssid *other_ssid;
1764 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1765 other_ssid = other_ssid->next) {
1766 if (other_ssid->disabled == 2)
1767 continue; /* do not change persistent P2P group
1769 if (other_ssid == wpa_s->current_ssid &&
1770 other_ssid->disabled)
1771 wpa_s->reassociate = 1;
1773 was_disabled = other_ssid->disabled;
1775 other_ssid->disabled = 0;
1777 wpas_clear_temp_disabled(wpa_s, other_ssid, 0);
1779 if (was_disabled != other_ssid->disabled)
1780 wpas_notify_network_enabled_changed(
1783 if (wpa_s->reassociate)
1784 wpa_supplicant_req_scan(wpa_s, 0, 0);
1785 } else if (ssid->disabled && ssid->disabled != 2) {
1786 if (wpa_s->current_ssid == NULL) {
1788 * Try to reassociate since there is no current
1789 * configuration and a new network was made available.
1791 wpa_s->reassociate = 1;
1792 wpa_supplicant_req_scan(wpa_s, 0, 0);
1795 was_disabled = ssid->disabled;
1798 wpas_clear_temp_disabled(wpa_s, ssid, 1);
1800 if (was_disabled != ssid->disabled)
1801 wpas_notify_network_enabled_changed(wpa_s, ssid);
1807 * wpa_supplicant_disable_network - Mark a configured network as disabled
1808 * @wpa_s: wpa_supplicant structure for a network interface
1809 * @ssid: wpa_ssid structure for a configured network or %NULL
1811 * Disables the specified network or all networks if no network specified.
1813 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1814 struct wpa_ssid *ssid)
1816 struct wpa_ssid *other_ssid;
1820 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1821 other_ssid = other_ssid->next) {
1822 was_disabled = other_ssid->disabled;
1823 if (was_disabled == 2)
1824 continue; /* do not change persistent P2P group
1827 other_ssid->disabled = 1;
1829 if (was_disabled != other_ssid->disabled)
1830 wpas_notify_network_enabled_changed(
1833 if (wpa_s->current_ssid)
1834 wpa_supplicant_deauthenticate(
1835 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1836 } else if (ssid->disabled != 2) {
1837 if (ssid == wpa_s->current_ssid)
1838 wpa_supplicant_deauthenticate(
1839 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1841 was_disabled = ssid->disabled;
1845 if (was_disabled != ssid->disabled)
1846 wpas_notify_network_enabled_changed(wpa_s, ssid);
1852 * wpa_supplicant_select_network - Attempt association with a network
1853 * @wpa_s: wpa_supplicant structure for a network interface
1854 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1856 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1857 struct wpa_ssid *ssid)
1860 struct wpa_ssid *other_ssid;
1861 int disconnected = 0;
1863 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) {
1864 wpa_supplicant_deauthenticate(
1865 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1870 wpas_clear_temp_disabled(wpa_s, ssid, 1);
1873 * Mark all other networks disabled or mark all networks enabled if no
1874 * network specified.
1876 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1877 other_ssid = other_ssid->next) {
1878 int was_disabled = other_ssid->disabled;
1879 if (was_disabled == 2)
1880 continue; /* do not change persistent P2P group data */
1882 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1883 if (was_disabled && !other_ssid->disabled)
1884 wpas_clear_temp_disabled(wpa_s, other_ssid, 0);
1886 if (was_disabled != other_ssid->disabled)
1887 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1890 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) {
1891 /* We are already associated with the selected network */
1892 wpa_printf(MSG_DEBUG, "Already associated with the "
1893 "selected network - do nothing");
1898 wpa_s->current_ssid = ssid;
1899 wpa_s->connect_without_scan = NULL;
1900 wpa_s->disconnected = 0;
1901 wpa_s->reassociate = 1;
1902 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0);
1905 wpas_notify_network_selected(wpa_s, ssid);
1910 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1911 * @wpa_s: wpa_supplicant structure for a network interface
1912 * @ap_scan: AP scan mode
1913 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1916 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1921 if (ap_scan < 0 || ap_scan > 2)
1925 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
1926 wpa_s->wpa_state >= WPA_ASSOCIATING &&
1927 wpa_s->wpa_state < WPA_COMPLETED) {
1928 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
1929 "associating", wpa_s->conf->ap_scan, ap_scan);
1932 #endif /* ANDROID */
1934 old_ap_scan = wpa_s->conf->ap_scan;
1935 wpa_s->conf->ap_scan = ap_scan;
1937 if (old_ap_scan != wpa_s->conf->ap_scan)
1938 wpas_notify_ap_scan_changed(wpa_s);
1945 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1946 * @wpa_s: wpa_supplicant structure for a network interface
1947 * @expire_age: Expiration age in seconds
1948 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1951 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
1952 unsigned int bss_expire_age)
1954 if (bss_expire_age < 10) {
1955 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
1959 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
1961 wpa_s->conf->bss_expiration_age = bss_expire_age;
1968 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1969 * @wpa_s: wpa_supplicant structure for a network interface
1970 * @expire_count: number of scans after which an unseen BSS is reclaimed
1971 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1974 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
1975 unsigned int bss_expire_count)
1977 if (bss_expire_count < 1) {
1978 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
1982 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
1984 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
1991 * wpa_supplicant_set_scan_interval - Set scan interval
1992 * @wpa_s: wpa_supplicant structure for a network interface
1993 * @scan_interval: scan interval in seconds
1994 * Returns: 0 if succeed or -1 if scan_interval has an invalid value
1997 int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s,
2000 if (scan_interval < 0) {
2001 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d",
2005 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec",
2007 wpa_s->scan_interval = scan_interval;
2014 * wpa_supplicant_set_debug_params - Set global debug params
2015 * @global: wpa_global structure
2016 * @debug_level: debug level
2017 * @debug_timestamp: determines if show timestamp in debug data
2018 * @debug_show_keys: determines if show keys in debug data
2019 * Returns: 0 if succeed or -1 if debug_level has wrong value
2021 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
2022 int debug_timestamp, int debug_show_keys)
2025 int old_level, old_timestamp, old_show_keys;
2027 /* check for allowed debuglevels */
2028 if (debug_level != MSG_EXCESSIVE &&
2029 debug_level != MSG_MSGDUMP &&
2030 debug_level != MSG_DEBUG &&
2031 debug_level != MSG_INFO &&
2032 debug_level != MSG_WARNING &&
2033 debug_level != MSG_ERROR)
2036 old_level = wpa_debug_level;
2037 old_timestamp = wpa_debug_timestamp;
2038 old_show_keys = wpa_debug_show_keys;
2040 wpa_debug_level = debug_level;
2041 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
2042 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
2044 if (wpa_debug_level != old_level)
2045 wpas_notify_debug_level_changed(global);
2046 if (wpa_debug_timestamp != old_timestamp)
2047 wpas_notify_debug_timestamp_changed(global);
2048 if (wpa_debug_show_keys != old_show_keys)
2049 wpas_notify_debug_show_keys_changed(global);
2056 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
2057 * @wpa_s: Pointer to wpa_supplicant data
2058 * Returns: A pointer to the current network structure or %NULL on failure
2060 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
2062 struct wpa_ssid *entry;
2063 u8 ssid[MAX_SSID_LEN];
2069 res = wpa_drv_get_ssid(wpa_s, ssid);
2071 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
2077 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2078 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
2083 wired = wpa_s->conf->ap_scan == 0 &&
2084 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
2086 entry = wpa_s->conf->ssid;
2088 if (!wpas_network_disabled(wpa_s, entry) &&
2089 ((ssid_len == entry->ssid_len &&
2090 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
2091 (!entry->bssid_set ||
2092 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
2095 if (!wpas_network_disabled(wpa_s, entry) &&
2096 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
2097 (entry->ssid == NULL || entry->ssid_len == 0) &&
2098 (!entry->bssid_set ||
2099 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
2101 #endif /* CONFIG_WPS */
2103 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set &&
2104 entry->ssid_len == 0 &&
2105 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
2108 entry = entry->next;
2115 static int select_driver(struct wpa_supplicant *wpa_s, int i)
2117 struct wpa_global *global = wpa_s->global;
2119 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
2120 global->drv_priv[i] = wpa_drivers[i]->global_init();
2121 if (global->drv_priv[i] == NULL) {
2122 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2123 "'%s'", wpa_drivers[i]->name);
2128 wpa_s->driver = wpa_drivers[i];
2129 wpa_s->global_drv_priv = global->drv_priv[i];
2135 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
2140 const char *pos, *driver = name;
2145 if (wpa_drivers[0] == NULL) {
2146 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
2152 /* default to first driver in the list */
2153 return select_driver(wpa_s, 0);
2157 pos = os_strchr(driver, ',');
2161 len = os_strlen(driver);
2163 for (i = 0; wpa_drivers[i]; i++) {
2164 if (os_strlen(wpa_drivers[i]->name) == len &&
2165 os_strncmp(driver, wpa_drivers[i]->name, len) ==
2167 /* First driver that succeeds wins */
2168 if (select_driver(wpa_s, i) == 0)
2176 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
2182 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
2183 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
2184 * with struct wpa_driver_ops::init()
2185 * @src_addr: Source address of the EAPOL frame
2186 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
2187 * @len: Length of the EAPOL data
2189 * This function is called for each received EAPOL frame. Most driver
2190 * interfaces rely on more generic OS mechanism for receiving frames through
2191 * l2_packet, but if such a mechanism is not available, the driver wrapper may
2192 * take care of received EAPOL frames and deliver them to the core supplicant
2193 * code by calling this function.
2195 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
2196 const u8 *buf, size_t len)
2198 struct wpa_supplicant *wpa_s = ctx;
2200 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
2201 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
2203 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
2205 * There is possible race condition between receiving the
2206 * association event and the EAPOL frame since they are coming
2207 * through different paths from the driver. In order to avoid
2208 * issues in trying to process the EAPOL frame before receiving
2209 * association information, lets queue it for processing until
2210 * the association event is received.
2212 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
2213 "of received EAPOL frame");
2214 wpabuf_free(wpa_s->pending_eapol_rx);
2215 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
2216 if (wpa_s->pending_eapol_rx) {
2217 os_get_time(&wpa_s->pending_eapol_rx_time);
2218 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
2225 if (wpa_s->ap_iface) {
2226 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
2229 #endif /* CONFIG_AP */
2231 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
2232 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
2233 "no key management is configured");
2237 if (wpa_s->eapol_received == 0 &&
2238 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
2239 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
2240 wpa_s->wpa_state != WPA_COMPLETED) &&
2241 (wpa_s->current_ssid == NULL ||
2242 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
2243 /* Timeout for completing IEEE 802.1X and WPA authentication */
2244 wpa_supplicant_req_auth_timeout(
2246 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2247 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
2248 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
2251 wpa_s->eapol_received++;
2253 if (wpa_s->countermeasures) {
2254 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
2259 #ifdef CONFIG_IBSS_RSN
2260 if (wpa_s->current_ssid &&
2261 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
2262 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
2265 #endif /* CONFIG_IBSS_RSN */
2267 /* Source address of the incoming EAPOL frame could be compared to the
2268 * current BSSID. However, it is possible that a centralized
2269 * Authenticator could be using another MAC address than the BSSID of
2270 * an AP, so just allow any address to be used for now. The replies are
2271 * still sent to the current BSSID (if available), though. */
2273 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
2274 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
2275 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
2277 wpa_drv_poll(wpa_s);
2278 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
2279 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
2280 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2282 * Set portValid = TRUE here since we are going to skip 4-way
2283 * handshake processing which would normally set portValid. We
2284 * need this to allow the EAPOL state machines to be completed
2285 * without going through EAPOL-Key handshake.
2287 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2292 int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s)
2294 if (wpa_s->driver->send_eapol) {
2295 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2297 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2298 } else if (!(wpa_s->drv_flags &
2299 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
2300 l2_packet_deinit(wpa_s->l2);
2301 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2302 wpa_drv_get_mac_addr(wpa_s),
2304 wpa_supplicant_rx_eapol, wpa_s, 0);
2305 if (wpa_s->l2 == NULL)
2308 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2310 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2313 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
2314 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
2318 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2319 MAC2STR(wpa_s->own_addr));
2320 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2326 static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr,
2327 const u8 *buf, size_t len)
2329 struct wpa_supplicant *wpa_s = ctx;
2330 const struct l2_ethhdr *eth;
2332 if (len < sizeof(*eth))
2334 eth = (const struct l2_ethhdr *) buf;
2336 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 &&
2337 !(eth->h_dest[0] & 0x01)) {
2338 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
2339 " (bridge - not for this interface - ignore)",
2340 MAC2STR(src_addr), MAC2STR(eth->h_dest));
2344 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
2345 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest));
2346 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth),
2347 len - sizeof(*eth));
2352 * wpa_supplicant_driver_init - Initialize driver interface parameters
2353 * @wpa_s: Pointer to wpa_supplicant data
2354 * Returns: 0 on success, -1 on failure
2356 * This function is called to initialize driver interface parameters.
2357 * wpa_drv_init() must have been called before this function to initialize the
2360 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
2362 static int interface_count = 0;
2364 if (wpa_supplicant_update_mac_addr(wpa_s) < 0)
2367 if (wpa_s->bridge_ifname[0]) {
2368 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2369 "interface '%s'", wpa_s->bridge_ifname);
2370 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2373 wpa_supplicant_rx_eapol_bridge,
2375 if (wpa_s->l2_br == NULL) {
2376 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2377 "connection for the bridge interface '%s'",
2378 wpa_s->bridge_ifname);
2383 wpa_clear_keys(wpa_s, NULL);
2385 /* Make sure that TKIP countermeasures are not left enabled (could
2386 * happen if wpa_supplicant is killed during countermeasures. */
2387 wpa_drv_set_countermeasures(wpa_s, 0);
2389 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
2390 wpa_drv_flush_pmkid(wpa_s);
2392 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
2393 wpa_s->prev_scan_wildcard = 0;
2395 if (wpa_supplicant_enabled_networks(wpa_s)) {
2396 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count,
2398 wpa_supplicant_req_scan(wpa_s, interface_count,
2402 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
2408 static int wpa_supplicant_daemon(const char *pid_file)
2410 wpa_printf(MSG_DEBUG, "Daemonize..");
2411 return os_daemonize(pid_file);
2415 static struct wpa_supplicant * wpa_supplicant_alloc(void)
2417 struct wpa_supplicant *wpa_s;
2419 wpa_s = os_zalloc(sizeof(*wpa_s));
2422 wpa_s->scan_req = INITIAL_SCAN_REQ;
2423 wpa_s->scan_interval = 5;
2424 wpa_s->new_connection = 1;
2425 wpa_s->parent = wpa_s;
2426 wpa_s->sched_scanning = 0;
2432 #ifdef CONFIG_HT_OVERRIDES
2434 static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s,
2435 struct ieee80211_ht_capabilities *htcaps,
2436 struct ieee80211_ht_capabilities *htcaps_mask,
2439 /* parse ht_mcs into hex array */
2441 const char *tmp = ht_mcs;
2444 /* If ht_mcs is null, do not set anything */
2448 /* This is what we are setting in the kernel */
2449 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN);
2451 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs);
2453 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
2455 long v = strtol(tmp, &end, 16);
2457 wpa_msg(wpa_s, MSG_DEBUG,
2458 "htcap value[%i]: %ld end: %p tmp: %p",
2463 htcaps->supported_mcs_set[i] = v;
2466 wpa_msg(wpa_s, MSG_ERROR,
2467 "Failed to parse ht-mcs: %s, error: %s\n",
2468 ht_mcs, strerror(errno));
2474 * If we were able to parse any values, then set mask for the MCS set.
2477 os_memset(&htcaps_mask->supported_mcs_set, 0xff,
2478 IEEE80211_HT_MCS_MASK_LEN - 1);
2479 /* skip the 3 reserved bits */
2480 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] =
2488 static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s,
2489 struct ieee80211_ht_capabilities *htcaps,
2490 struct ieee80211_ht_capabilities *htcaps_mask,
2495 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled);
2500 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE);
2501 htcaps_mask->ht_capabilities_info |= msk;
2503 htcaps->ht_capabilities_info &= msk;
2505 htcaps->ht_capabilities_info |= msk;
2511 static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s,
2512 struct ieee80211_ht_capabilities *htcaps,
2513 struct ieee80211_ht_capabilities *htcaps_mask,
2516 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor);
2521 if (factor < 0 || factor > 3) {
2522 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. "
2523 "Must be 0-3 or -1", factor);
2527 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */
2528 htcaps->a_mpdu_params &= ~0x3;
2529 htcaps->a_mpdu_params |= factor & 0x3;
2535 static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s,
2536 struct ieee80211_ht_capabilities *htcaps,
2537 struct ieee80211_ht_capabilities *htcaps_mask,
2540 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density);
2545 if (density < 0 || density > 7) {
2546 wpa_msg(wpa_s, MSG_ERROR,
2547 "ampdu_density: %d out of range. Must be 0-7 or -1.",
2552 htcaps_mask->a_mpdu_params |= 0x1C;
2553 htcaps->a_mpdu_params &= ~(0x1C);
2554 htcaps->a_mpdu_params |= (density << 2) & 0x1C;
2560 static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s,
2561 struct ieee80211_ht_capabilities *htcaps,
2562 struct ieee80211_ht_capabilities *htcaps_mask,
2565 /* Masking these out disables HT40 */
2566 u16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET |
2567 HT_CAP_INFO_SHORT_GI40MHZ);
2569 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled);
2572 htcaps->ht_capabilities_info &= ~msk;
2574 htcaps->ht_capabilities_info |= msk;
2576 htcaps_mask->ht_capabilities_info |= msk;
2582 static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s,
2583 struct ieee80211_ht_capabilities *htcaps,
2584 struct ieee80211_ht_capabilities *htcaps_mask,
2587 /* Masking these out disables SGI */
2588 u16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ |
2589 HT_CAP_INFO_SHORT_GI40MHZ);
2591 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled);
2594 htcaps->ht_capabilities_info &= ~msk;
2596 htcaps->ht_capabilities_info |= msk;
2598 htcaps_mask->ht_capabilities_info |= msk;
2604 void wpa_supplicant_apply_ht_overrides(
2605 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
2606 struct wpa_driver_associate_params *params)
2608 struct ieee80211_ht_capabilities *htcaps;
2609 struct ieee80211_ht_capabilities *htcaps_mask;
2614 params->disable_ht = ssid->disable_ht;
2615 if (!params->htcaps || !params->htcaps_mask)
2618 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps;
2619 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask;
2620 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs);
2621 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask,
2622 ssid->disable_max_amsdu);
2623 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor);
2624 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density);
2625 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40);
2626 wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi);
2629 #endif /* CONFIG_HT_OVERRIDES */
2632 static int pcsc_reader_init(struct wpa_supplicant *wpa_s)
2637 if (!wpa_s->conf->pcsc_reader)
2640 wpa_s->scard = scard_init(SCARD_TRY_BOTH, wpa_s->conf->pcsc_reader);
2644 if (wpa_s->conf->pcsc_pin &&
2645 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) {
2646 scard_deinit(wpa_s->scard);
2647 wpa_s->scard = NULL;
2648 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed");
2652 len = sizeof(wpa_s->imsi) - 1;
2653 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
2654 scard_deinit(wpa_s->scard);
2655 wpa_s->scard = NULL;
2656 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
2659 wpa_s->imsi[len] = '\0';
2661 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
2663 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
2664 wpa_s->imsi, wpa_s->mnc_len);
2666 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
2667 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
2668 #endif /* PCSC_FUNCS */
2674 int wpas_init_ext_pw(struct wpa_supplicant *wpa_s)
2678 ext_password_deinit(wpa_s->ext_pw);
2679 wpa_s->ext_pw = NULL;
2680 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL);
2682 if (!wpa_s->conf->ext_password_backend)
2685 val = os_strdup(wpa_s->conf->ext_password_backend);
2688 pos = os_strchr(val, ':');
2692 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val);
2694 wpa_s->ext_pw = ext_password_init(val, pos);
2696 if (wpa_s->ext_pw == NULL) {
2697 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend");
2700 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw);
2706 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2707 struct wpa_interface *iface)
2709 const char *ifname, *driver;
2710 struct wpa_driver_capa capa;
2712 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2713 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2714 iface->confname ? iface->confname : "N/A",
2715 iface->driver ? iface->driver : "default",
2716 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2717 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2719 if (iface->confname) {
2720 #ifdef CONFIG_BACKEND_FILE
2721 wpa_s->confname = os_rel2abs_path(iface->confname);
2722 if (wpa_s->confname == NULL) {
2723 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2724 "for configuration file '%s'.",
2728 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2729 iface->confname, wpa_s->confname);
2730 #else /* CONFIG_BACKEND_FILE */
2731 wpa_s->confname = os_strdup(iface->confname);
2732 #endif /* CONFIG_BACKEND_FILE */
2733 wpa_s->conf = wpa_config_read(wpa_s->confname);
2734 if (wpa_s->conf == NULL) {
2735 wpa_printf(MSG_ERROR, "Failed to read or parse "
2736 "configuration '%s'.", wpa_s->confname);
2741 * Override ctrl_interface and driver_param if set on command
2744 if (iface->ctrl_interface) {
2745 os_free(wpa_s->conf->ctrl_interface);
2746 wpa_s->conf->ctrl_interface =
2747 os_strdup(iface->ctrl_interface);
2750 if (iface->driver_param) {
2751 os_free(wpa_s->conf->driver_param);
2752 wpa_s->conf->driver_param =
2753 os_strdup(iface->driver_param);
2756 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2757 iface->driver_param);
2759 if (wpa_s->conf == NULL) {
2760 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2764 if (iface->ifname == NULL) {
2765 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2768 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2769 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2773 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2775 if (iface->bridge_ifname) {
2776 if (os_strlen(iface->bridge_ifname) >=
2777 sizeof(wpa_s->bridge_ifname)) {
2778 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2779 "name '%s'.", iface->bridge_ifname);
2782 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2783 sizeof(wpa_s->bridge_ifname));
2786 /* RSNA Supplicant Key Management - INITIALIZE */
2787 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2788 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2790 /* Initialize driver interface and register driver event handler before
2791 * L2 receive handler so that association events are processed before
2792 * EAPOL-Key packets if both become available for the same select()
2794 driver = iface->driver;
2796 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2799 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2800 if (wpa_s->drv_priv == NULL) {
2802 pos = driver ? os_strchr(driver, ',') : NULL;
2804 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
2805 "driver interface - try next driver wrapper");
2809 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
2813 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2814 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
2815 "driver_param '%s'", wpa_s->conf->driver_param);
2819 ifname = wpa_drv_get_ifname(wpa_s);
2820 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2821 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
2822 "interface name with '%s'", ifname);
2823 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2826 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2829 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2830 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2832 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2834 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2835 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2836 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2837 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2838 "dot11RSNAConfigPMKLifetime");
2842 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2843 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2844 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2845 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2846 "dot11RSNAConfigPMKReauthThreshold");
2850 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2851 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2852 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2853 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2854 "dot11RSNAConfigSATimeout");
2858 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
2859 &wpa_s->hw.num_modes,
2862 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2863 wpa_s->drv_capa_known = 1;
2864 wpa_s->drv_flags = capa.flags;
2865 wpa_s->drv_enc = capa.enc;
2866 wpa_s->probe_resp_offloads = capa.probe_resp_offloads;
2867 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2868 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
2869 wpa_s->sched_scan_supported = capa.sched_scan_supported;
2870 wpa_s->max_match_sets = capa.max_match_sets;
2871 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
2872 wpa_s->max_stations = capa.max_stations;
2874 if (wpa_s->max_remain_on_chan == 0)
2875 wpa_s->max_remain_on_chan = 1000;
2877 if (wpa_supplicant_driver_init(wpa_s) < 0)
2881 if (wpa_tdls_init(wpa_s->wpa))
2883 #endif /* CONFIG_TDLS */
2885 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2886 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2887 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
2891 if (wpas_wps_init(wpa_s))
2894 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2896 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2898 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2899 if (wpa_s->ctrl_iface == NULL) {
2900 wpa_printf(MSG_ERROR,
2901 "Failed to initialize control interface '%s'.\n"
2902 "You may have another wpa_supplicant process "
2903 "already running or the file was\n"
2904 "left by an unclean termination of wpa_supplicant "
2905 "in which case you will need\n"
2906 "to manually remove this file before starting "
2907 "wpa_supplicant again.\n",
2908 wpa_s->conf->ctrl_interface);
2912 wpa_s->gas = gas_query_init(wpa_s);
2913 if (wpa_s->gas == NULL) {
2914 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
2919 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
2920 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
2923 #endif /* CONFIG_P2P */
2925 if (wpa_bss_init(wpa_s) < 0)
2928 if (pcsc_reader_init(wpa_s) < 0)
2931 if (wpas_init_ext_pw(wpa_s) < 0)
2938 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2939 int notify, int terminate)
2941 if (wpa_s->drv_priv) {
2942 wpa_supplicant_deauthenticate(wpa_s,
2943 WLAN_REASON_DEAUTH_LEAVING);
2945 wpa_drv_set_countermeasures(wpa_s, 0);
2946 wpa_clear_keys(wpa_s, NULL);
2949 wpa_supplicant_cleanup(wpa_s);
2952 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
2953 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
2954 "the management interface is being removed");
2955 wpas_p2p_deinit_global(wpa_s->global);
2957 #endif /* CONFIG_P2P */
2959 if (wpa_s->drv_priv)
2960 wpa_drv_deinit(wpa_s);
2963 wpas_notify_iface_removed(wpa_s);
2966 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING);
2968 if (wpa_s->ctrl_iface) {
2969 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
2970 wpa_s->ctrl_iface = NULL;
2973 if (wpa_s->conf != NULL) {
2974 wpa_config_free(wpa_s->conf);
2981 * wpa_supplicant_add_iface - Add a new network interface
2982 * @global: Pointer to global data from wpa_supplicant_init()
2983 * @iface: Interface configuration options
2984 * Returns: Pointer to the created interface or %NULL on failure
2986 * This function is used to add new network interfaces for %wpa_supplicant.
2987 * This can be called before wpa_supplicant_run() to add interfaces before the
2988 * main event loop has been started. In addition, new interfaces can be added
2989 * dynamically while %wpa_supplicant is already running. This could happen,
2990 * e.g., when a hotplug network adapter is inserted.
2992 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2993 struct wpa_interface *iface)
2995 struct wpa_supplicant *wpa_s;
2996 struct wpa_interface t_iface;
2997 struct wpa_ssid *ssid;
2999 if (global == NULL || iface == NULL)
3002 wpa_s = wpa_supplicant_alloc();
3006 wpa_s->global = global;
3009 if (global->params.override_driver) {
3010 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
3012 iface->driver, global->params.override_driver);
3013 t_iface.driver = global->params.override_driver;
3015 if (global->params.override_ctrl_interface) {
3016 wpa_printf(MSG_DEBUG, "Override interface parameter: "
3017 "ctrl_interface ('%s' -> '%s')",
3018 iface->ctrl_interface,
3019 global->params.override_ctrl_interface);
3020 t_iface.ctrl_interface =
3021 global->params.override_ctrl_interface;
3023 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
3024 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
3026 wpa_supplicant_deinit_iface(wpa_s, 0, 0);
3031 /* Notify the control interfaces about new iface */
3032 if (wpas_notify_iface_added(wpa_s)) {
3033 wpa_supplicant_deinit_iface(wpa_s, 1, 0);
3038 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
3039 wpas_notify_network_added(wpa_s, ssid);
3041 wpa_s->next = global->ifaces;
3042 global->ifaces = wpa_s;
3044 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
3045 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3052 * wpa_supplicant_remove_iface - Remove a network interface
3053 * @global: Pointer to global data from wpa_supplicant_init()
3054 * @wpa_s: Pointer to the network interface to be removed
3055 * Returns: 0 if interface was removed, -1 if interface was not found
3057 * This function can be used to dynamically remove network interfaces from
3058 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
3059 * addition, this function is used to remove all remaining interfaces when
3060 * %wpa_supplicant is terminated.
3062 int wpa_supplicant_remove_iface(struct wpa_global *global,
3063 struct wpa_supplicant *wpa_s,
3066 struct wpa_supplicant *prev;
3068 /* Remove interface from the global list of interfaces */
3069 prev = global->ifaces;
3070 if (prev == wpa_s) {
3071 global->ifaces = wpa_s->next;
3073 while (prev && prev->next != wpa_s)
3077 prev->next = wpa_s->next;
3080 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
3082 if (global->p2p_group_formation == wpa_s)
3083 global->p2p_group_formation = NULL;
3084 wpa_supplicant_deinit_iface(wpa_s, 1, terminate);
3092 * wpa_supplicant_get_eap_mode - Get the current EAP mode
3093 * @wpa_s: Pointer to the network interface
3094 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
3096 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
3098 const char *eapol_method;
3100 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
3101 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
3105 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
3106 if (eapol_method == NULL)
3107 return "UNKNOWN-EAP";
3109 return eapol_method;
3114 * wpa_supplicant_get_iface - Get a new network interface
3115 * @global: Pointer to global data from wpa_supplicant_init()
3116 * @ifname: Interface name
3117 * Returns: Pointer to the interface or %NULL if not found
3119 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
3122 struct wpa_supplicant *wpa_s;
3124 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3125 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3132 #ifndef CONFIG_NO_WPA_MSG
3133 static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
3135 struct wpa_supplicant *wpa_s = ctx;
3138 return wpa_s->ifname;
3140 #endif /* CONFIG_NO_WPA_MSG */
3144 * wpa_supplicant_init - Initialize %wpa_supplicant
3145 * @params: Parameters for %wpa_supplicant
3146 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
3148 * This function is used to initialize %wpa_supplicant. After successful
3149 * initialization, the returned data pointer can be used to add and remove
3150 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
3152 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
3154 struct wpa_global *global;
3160 #ifdef CONFIG_DRIVER_NDIS
3162 void driver_ndis_init_ops(void);
3163 driver_ndis_init_ops();
3165 #endif /* CONFIG_DRIVER_NDIS */
3167 #ifndef CONFIG_NO_WPA_MSG
3168 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
3169 #endif /* CONFIG_NO_WPA_MSG */
3171 wpa_debug_open_file(params->wpa_debug_file_path);
3172 if (params->wpa_debug_syslog)
3173 wpa_debug_open_syslog();
3174 if (params->wpa_debug_tracing) {
3175 ret = wpa_debug_open_linux_tracing();
3177 wpa_printf(MSG_ERROR,
3178 "Failed to enable trace logging");
3183 ret = eap_register_methods();
3185 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
3187 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
3188 "the same EAP type.");
3192 global = os_zalloc(sizeof(*global));
3195 dl_list_init(&global->p2p_srv_bonjour);
3196 dl_list_init(&global->p2p_srv_upnp);
3197 global->params.daemonize = params->daemonize;
3198 global->params.wait_for_monitor = params->wait_for_monitor;
3199 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
3200 if (params->pid_file)
3201 global->params.pid_file = os_strdup(params->pid_file);
3202 if (params->ctrl_interface)
3203 global->params.ctrl_interface =
3204 os_strdup(params->ctrl_interface);
3205 if (params->override_driver)
3206 global->params.override_driver =
3207 os_strdup(params->override_driver);
3208 if (params->override_ctrl_interface)
3209 global->params.override_ctrl_interface =
3210 os_strdup(params->override_ctrl_interface);
3211 wpa_debug_level = global->params.wpa_debug_level =
3212 params->wpa_debug_level;
3213 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
3214 params->wpa_debug_show_keys;
3215 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
3216 params->wpa_debug_timestamp;
3218 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
3221 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
3222 wpa_supplicant_deinit(global);
3226 random_init(params->entropy_file);
3228 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
3229 if (global->ctrl_iface == NULL) {
3230 wpa_supplicant_deinit(global);
3234 if (wpas_notify_supplicant_initialized(global)) {
3235 wpa_supplicant_deinit(global);
3239 for (i = 0; wpa_drivers[i]; i++)
3240 global->drv_count++;
3241 if (global->drv_count == 0) {
3242 wpa_printf(MSG_ERROR, "No drivers enabled");
3243 wpa_supplicant_deinit(global);
3246 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
3247 if (global->drv_priv == NULL) {
3248 wpa_supplicant_deinit(global);
3252 #ifdef CONFIG_WIFI_DISPLAY
3253 if (wifi_display_init(global) < 0) {
3254 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display");
3255 wpa_supplicant_deinit(global);
3258 #endif /* CONFIG_WIFI_DISPLAY */
3265 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
3266 * @global: Pointer to global data from wpa_supplicant_init()
3267 * Returns: 0 after successful event loop run, -1 on failure
3269 * This function starts the main event loop and continues running as long as
3270 * there are any remaining events. In most cases, this function is running as
3271 * long as the %wpa_supplicant process in still in use.
3273 int wpa_supplicant_run(struct wpa_global *global)
3275 struct wpa_supplicant *wpa_s;
3277 if (global->params.daemonize &&
3278 wpa_supplicant_daemon(global->params.pid_file))
3281 if (global->params.wait_for_monitor) {
3282 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
3283 if (wpa_s->ctrl_iface)
3284 wpa_supplicant_ctrl_iface_wait(
3288 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
3289 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
3298 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
3299 * @global: Pointer to global data from wpa_supplicant_init()
3301 * This function is called to deinitialize %wpa_supplicant and to free all
3302 * allocated resources. Remaining network interfaces will also be removed.
3304 void wpa_supplicant_deinit(struct wpa_global *global)
3311 #ifdef CONFIG_WIFI_DISPLAY
3312 wifi_display_deinit(global);
3313 #endif /* CONFIG_WIFI_DISPLAY */
3315 wpas_p2p_deinit_global(global);
3316 #endif /* CONFIG_P2P */
3318 while (global->ifaces)
3319 wpa_supplicant_remove_iface(global, global->ifaces, 1);
3321 if (global->ctrl_iface)
3322 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
3324 wpas_notify_supplicant_deinitialized(global);
3326 eap_peer_unregister_methods();
3328 eap_server_unregister_methods();
3329 #endif /* CONFIG_AP */
3331 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
3332 if (!global->drv_priv[i])
3334 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
3336 os_free(global->drv_priv);
3342 if (global->params.pid_file) {
3343 os_daemonize_terminate(global->params.pid_file);
3344 os_free(global->params.pid_file);
3346 os_free(global->params.ctrl_interface);
3347 os_free(global->params.override_driver);
3348 os_free(global->params.override_ctrl_interface);
3350 os_free(global->p2p_disallow_freq);
3353 wpa_debug_close_syslog();
3354 wpa_debug_close_file();
3355 wpa_debug_close_linux_tracing();
3359 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
3361 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
3362 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3364 country[0] = wpa_s->conf->country[0];
3365 country[1] = wpa_s->conf->country[1];
3367 if (wpa_drv_set_country(wpa_s, country) < 0) {
3368 wpa_printf(MSG_ERROR, "Failed to set country code "
3373 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND)
3374 wpas_init_ext_pw(wpa_s);
3377 wpas_wps_update_config(wpa_s);
3378 #endif /* CONFIG_WPS */
3381 wpas_p2p_update_config(wpa_s);
3382 #endif /* CONFIG_P2P */
3384 wpa_s->conf->changed_parameters = 0;
3388 static void add_freq(int *freqs, int *num_freqs, int freq)
3392 for (i = 0; i < *num_freqs; i++) {
3393 if (freqs[i] == freq)
3397 freqs[*num_freqs] = freq;
3402 static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
3404 struct wpa_bss *bss, *cbss;
3405 const int max_freqs = 10;
3409 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
3413 cbss = wpa_s->current_bss;
3415 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
3418 if (bss->ssid_len == cbss->ssid_len &&
3419 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
3420 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
3421 add_freq(freqs, &num_freqs, bss->freq);
3422 if (num_freqs == max_freqs)
3427 if (num_freqs == 0) {
3436 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
3443 * Remove possible authentication timeout since the connection failed.
3445 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
3448 * Add the failed BSSID into the blacklist and speed up next scan
3449 * attempt if there could be other APs that could accept association.
3450 * The current blacklist count indicates how many times we have tried
3451 * connecting to this AP and multiple attempts mean that other APs are
3452 * either not available or has already been tried, so that we can start
3453 * increasing the delay here to avoid constant scanning.
3455 count = wpa_blacklist_add(wpa_s, bssid);
3456 if (count == 1 && wpa_s->current_bss) {
3458 * This BSS was not in the blacklist before. If there is
3459 * another BSS available for the same ESS, we should try that
3460 * next. Otherwise, we may as well try this one once more
3461 * before allowing other, likely worse, ESSes to be considered.
3463 freqs = get_bss_freqs_in_ess(wpa_s);
3465 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
3466 "has been seen; try it next");
3467 wpa_blacklist_add(wpa_s, bssid);
3469 * On the next scan, go through only the known channels
3470 * used in this ESS based on previous scans to speed up
3471 * common load balancing use case.
3473 os_free(wpa_s->next_scan_freqs);
3474 wpa_s->next_scan_freqs = freqs;
3479 * Add previous failure count in case the temporary blacklist was
3480 * cleared due to no other BSSes being available.
3482 count += wpa_s->extra_blacklist_count;
3502 wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d "
3503 "ms", count, timeout);
3506 * TODO: if more than one possible AP is available in scan results,
3507 * could try the other ones before requesting a new scan.
3509 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
3510 1000 * (timeout % 1000));
3513 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
3514 wpa_s->global->p2p != NULL) {
3515 wpa_s->global->p2p_cb_on_scan_complete = 0;
3516 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
3517 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
3518 "continued after failed association");
3521 #endif /* CONFIG_P2P */
3525 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
3527 return wpa_s->conf->ap_scan == 2 ||
3528 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);
3532 #if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW)
3533 int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s,
3534 struct wpa_ssid *ssid,
3538 #ifdef IEEE8021X_EAPOL
3539 struct eap_peer_config *eap = &ssid->eap;
3541 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field);
3542 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value",
3543 (const u8 *) value, os_strlen(value));
3545 switch (wpa_supplicant_ctrl_req_from_string(field)) {
3546 case WPA_CTRL_REQ_EAP_IDENTITY:
3547 os_free(eap->identity);
3548 eap->identity = (u8 *) os_strdup(value);
3549 eap->identity_len = os_strlen(value);
3550 eap->pending_req_identity = 0;
3551 if (ssid == wpa_s->current_ssid)
3552 wpa_s->reassociate = 1;
3554 case WPA_CTRL_REQ_EAP_PASSWORD:
3555 os_free(eap->password);
3556 eap->password = (u8 *) os_strdup(value);
3557 eap->password_len = os_strlen(value);
3558 eap->pending_req_password = 0;
3559 if (ssid == wpa_s->current_ssid)
3560 wpa_s->reassociate = 1;
3562 case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
3563 os_free(eap->new_password);
3564 eap->new_password = (u8 *) os_strdup(value);
3565 eap->new_password_len = os_strlen(value);
3566 eap->pending_req_new_password = 0;
3567 if (ssid == wpa_s->current_ssid)
3568 wpa_s->reassociate = 1;
3570 case WPA_CTRL_REQ_EAP_PIN:
3572 eap->pin = os_strdup(value);
3573 eap->pending_req_pin = 0;
3574 if (ssid == wpa_s->current_ssid)
3575 wpa_s->reassociate = 1;
3577 case WPA_CTRL_REQ_EAP_OTP:
3579 eap->otp = (u8 *) os_strdup(value);
3580 eap->otp_len = os_strlen(value);
3581 os_free(eap->pending_req_otp);
3582 eap->pending_req_otp = NULL;
3583 eap->pending_req_otp_len = 0;
3585 case WPA_CTRL_REQ_EAP_PASSPHRASE:
3586 os_free(eap->private_key_passwd);
3587 eap->private_key_passwd = (u8 *) os_strdup(value);
3588 eap->pending_req_passphrase = 0;
3589 if (ssid == wpa_s->current_ssid)
3590 wpa_s->reassociate = 1;
3593 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field);
3598 #else /* IEEE8021X_EAPOL */
3599 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included");
3601 #endif /* IEEE8021X_EAPOL */
3603 #endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */
3606 int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
3609 unsigned int drv_enc;
3617 if (wpa_s && wpa_s->drv_capa_known)
3618 drv_enc = wpa_s->drv_enc;
3620 drv_enc = (unsigned int) -1;
3622 for (i = 0; i < NUM_WEP_KEYS; i++) {
3623 size_t len = ssid->wep_key_len[i];
3626 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40))
3628 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104))
3630 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128))
3632 return 1; /* invalid WEP key */
3635 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
3643 int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s)
3645 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P)
3647 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA)
3653 void wpas_auth_failed(struct wpa_supplicant *wpa_s)
3655 struct wpa_ssid *ssid = wpa_s->current_ssid;
3660 wpa_printf(MSG_DEBUG, "Authentication failure but no known "
3665 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
3668 ssid->auth_failures++;
3669 if (ssid->auth_failures > 50)
3671 else if (ssid->auth_failures > 20)
3673 else if (ssid->auth_failures > 10)
3675 else if (ssid->auth_failures > 5)
3677 else if (ssid->auth_failures > 1)
3683 if (now.sec + dur <= ssid->disabled_until.sec)
3686 ssid->disabled_until.sec = now.sec + dur;
3688 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED
3689 "id=%d ssid=\"%s\" auth_failures=%u duration=%d",
3690 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
3691 ssid->auth_failures, dur);
3695 void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s,
3696 struct wpa_ssid *ssid, int clear_failures)
3701 if (ssid->disabled_until.sec) {
3702 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED
3703 "id=%d ssid=\"%s\"",
3704 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3706 ssid->disabled_until.sec = 0;
3707 ssid->disabled_until.usec = 0;
3709 ssid->auth_failures = 0;
3713 int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid)
3717 if (wpa_s->disallow_aps_bssid == NULL)
3720 for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) {
3721 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN,
3722 bssid, ETH_ALEN) == 0)
3730 int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid,
3735 if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL)
3738 for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) {
3739 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i];
3740 if (ssid_len == s->ssid_len &&
3741 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3750 * wpas_request_connection - Request a new connection
3751 * @wpa_s: Pointer to the network interface
3753 * This function is used to request a new connection to be found. It will mark
3754 * the interface to allow reassociation and request a new scan to find a
3755 * suitable network to connect to.
3757 void wpas_request_connection(struct wpa_supplicant *wpa_s)
3759 wpa_s->normal_scans = 0;
3760 wpa_supplicant_reinit_autoscan(wpa_s);
3761 wpa_s->extra_blacklist_count = 0;
3762 wpa_s->disconnected = 0;
3763 wpa_s->reassociate = 1;
3764 wpa_supplicant_req_scan(wpa_s, 0, 0);