3 * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
14 * This file implements functions for registering and unregistering
15 * %wpa_supplicant interfaces. In addition, this file contains number of
16 * functions for managing network connections.
22 #include "crypto/random.h"
23 #include "crypto/sha1.h"
24 #include "eapol_supp/eapol_supp_sm.h"
25 #include "eap_peer/eap.h"
26 #include "eap_server/eap_methods.h"
27 #include "rsn_supp/wpa.h"
30 #include "l2_packet/l2_packet.h"
31 #include "wpa_supplicant_i.h"
33 #include "ctrl_iface.h"
34 #include "pcsc_funcs.h"
35 #include "common/version.h"
36 #include "rsn_supp/preauth.h"
37 #include "rsn_supp/pmksa_cache.h"
38 #include "common/wpa_ctrl.h"
39 #include "common/ieee802_11_defs.h"
41 #include "blacklist.h"
42 #include "wpas_glue.h"
43 #include "wps_supplicant.h"
46 #include "gas_query.h"
48 #include "p2p_supplicant.h"
53 #include "offchannel.h"
55 const char *wpa_supplicant_version =
56 "wpa_supplicant v" VERSION_STR "\n"
57 "Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi> and contributors";
59 const char *wpa_supplicant_license =
60 "This program is free software. You can distribute it and/or modify it\n"
61 "under the terms of the GNU General Public License version 2.\n"
63 "Alternatively, this software may be distributed under the terms of the\n"
64 "BSD license. See README and COPYING for more details.\n"
65 #ifdef EAP_TLS_OPENSSL
66 "\nThis product includes software developed by the OpenSSL Project\n"
67 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
68 #endif /* EAP_TLS_OPENSSL */
71 #ifndef CONFIG_NO_STDOUT_DEBUG
72 /* Long text divided into parts in order to fit in C89 strings size limits. */
73 const char *wpa_supplicant_full_license1 =
74 "This program is free software; you can redistribute it and/or modify\n"
75 "it under the terms of the GNU General Public License version 2 as\n"
76 "published by the Free Software Foundation.\n"
78 "This program is distributed in the hope that it will be useful,\n"
79 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
80 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
81 "GNU General Public License for more details.\n"
83 const char *wpa_supplicant_full_license2 =
84 "You should have received a copy of the GNU General Public License\n"
85 "along with this program; if not, write to the Free Software\n"
86 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
88 "Alternatively, this software may be distributed under the terms of the\n"
91 "Redistribution and use in source and binary forms, with or without\n"
92 "modification, are permitted provided that the following conditions are\n"
95 const char *wpa_supplicant_full_license3 =
96 "1. Redistributions of source code must retain the above copyright\n"
97 " notice, this list of conditions and the following disclaimer.\n"
99 "2. Redistributions in binary form must reproduce the above copyright\n"
100 " notice, this list of conditions and the following disclaimer in the\n"
101 " documentation and/or other materials provided with the distribution.\n"
103 const char *wpa_supplicant_full_license4 =
104 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
105 " names of its contributors may be used to endorse or promote products\n"
106 " derived from this software without specific prior written permission.\n"
108 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
109 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
110 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
111 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
112 const char *wpa_supplicant_full_license5 =
113 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
114 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
115 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
116 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
117 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
118 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
119 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
121 #endif /* CONFIG_NO_STDOUT_DEBUG */
123 extern int wpa_debug_level;
124 extern int wpa_debug_show_keys;
125 extern int wpa_debug_timestamp;
126 extern struct wpa_driver_ops *wpa_drivers[];
128 /* Configure default/group WEP keys for static WEP */
129 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
133 for (i = 0; i < NUM_WEP_KEYS; i++) {
134 if (ssid->wep_key_len[i] == 0)
138 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
139 i, i == ssid->wep_tx_keyidx, NULL, 0,
140 ssid->wep_key[i], ssid->wep_key_len[i]);
147 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
148 struct wpa_ssid *ssid)
155 /* IBSS/WPA-None uses only one key (Group) for both receiving and
156 * sending unicast and multicast packets. */
158 if (ssid->mode != WPAS_MODE_IBSS) {
159 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
160 "IBSS/ad-hoc) for WPA-None", ssid->mode);
164 if (!ssid->psk_set) {
165 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
170 switch (wpa_s->group_cipher) {
171 case WPA_CIPHER_CCMP:
172 os_memcpy(key, ssid->psk, 16);
176 case WPA_CIPHER_TKIP:
177 /* WPA-None uses the same Michael MIC key for both TX and RX */
178 os_memcpy(key, ssid->psk, 16 + 8);
179 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
184 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
185 "WPA-None", wpa_s->group_cipher);
189 /* TODO: should actually remember the previously used seq#, both for TX
190 * and RX from each STA.. */
192 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
196 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
198 struct wpa_supplicant *wpa_s = eloop_ctx;
199 const u8 *bssid = wpa_s->bssid;
200 if (is_zero_ether_addr(bssid))
201 bssid = wpa_s->pending_bssid;
202 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
204 wpa_blacklist_add(wpa_s, bssid);
205 wpa_sm_notify_disassoc(wpa_s->wpa);
206 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
207 wpa_s->reassociate = 1;
210 * If we timed out, the AP or the local radio may be busy.
211 * So, wait a second until scanning again.
213 wpa_supplicant_req_scan(wpa_s, 1, 0);
218 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
219 * @wpa_s: Pointer to wpa_supplicant data
220 * @sec: Number of seconds after which to time out authentication
221 * @usec: Number of microseconds after which to time out authentication
223 * This function is used to schedule a timeout for the current authentication
226 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
229 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
230 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
233 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
234 "%d usec", sec, usec);
235 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
236 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
241 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
242 * @wpa_s: Pointer to wpa_supplicant data
244 * This function is used to cancel authentication timeout scheduled with
245 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
248 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
250 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
251 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
252 wpa_blacklist_del(wpa_s, wpa_s->bssid);
257 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
258 * @wpa_s: Pointer to wpa_supplicant data
260 * This function is used to configure EAPOL state machine based on the selected
261 * authentication mode.
263 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
265 #ifdef IEEE8021X_EAPOL
266 struct eapol_config eapol_conf;
267 struct wpa_ssid *ssid = wpa_s->current_ssid;
269 #ifdef CONFIG_IBSS_RSN
270 if (ssid->mode == WPAS_MODE_IBSS &&
271 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
272 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
274 * RSN IBSS authentication is per-STA and we can disable the
275 * per-BSSID EAPOL authentication.
277 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
278 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
279 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
282 #endif /* CONFIG_IBSS_RSN */
284 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
285 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
287 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
288 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
289 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
291 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
293 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
294 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
295 eapol_conf.accept_802_1x_keys = 1;
296 eapol_conf.required_keys = 0;
297 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
298 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
300 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
301 eapol_conf.required_keys |=
302 EAPOL_REQUIRE_KEY_BROADCAST;
305 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
306 eapol_conf.required_keys = 0;
309 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
310 eapol_conf.workaround = ssid->eap_workaround;
311 eapol_conf.eap_disabled =
312 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
313 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
314 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
315 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
316 #endif /* IEEE8021X_EAPOL */
321 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
322 * @wpa_s: Pointer to wpa_supplicant data
323 * @ssid: Configuration data for the network
325 * This function is used to configure WPA state machine and related parameters
326 * to a mode where WPA is not enabled. This is called as part of the
327 * authentication configuration when the selected network does not use WPA.
329 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
330 struct wpa_ssid *ssid)
334 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
335 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
336 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
337 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
339 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
340 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
341 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
342 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
343 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
344 wpa_s->group_cipher = WPA_CIPHER_NONE;
345 wpa_s->mgmt_group_cipher = 0;
347 for (i = 0; i < NUM_WEP_KEYS; i++) {
348 if (ssid->wep_key_len[i] > 5) {
349 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
350 wpa_s->group_cipher = WPA_CIPHER_WEP104;
352 } else if (ssid->wep_key_len[i] > 0) {
353 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
354 wpa_s->group_cipher = WPA_CIPHER_WEP40;
359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
360 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
362 wpa_s->pairwise_cipher);
363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
364 #ifdef CONFIG_IEEE80211W
365 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
366 wpa_s->mgmt_group_cipher);
367 #endif /* CONFIG_IEEE80211W */
369 pmksa_cache_clear_current(wpa_s->wpa);
373 static void free_hw_features(struct wpa_supplicant *wpa_s)
376 if (wpa_s->hw.modes == NULL)
379 for (i = 0; i < wpa_s->hw.num_modes; i++) {
380 os_free(wpa_s->hw.modes[i].channels);
381 os_free(wpa_s->hw.modes[i].rates);
384 os_free(wpa_s->hw.modes);
385 wpa_s->hw.modes = NULL;
389 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
391 bgscan_deinit(wpa_s);
392 scard_deinit(wpa_s->scard);
394 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
395 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
396 l2_packet_deinit(wpa_s->l2);
399 l2_packet_deinit(wpa_s->l2_br);
403 if (wpa_s->ctrl_iface) {
404 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
405 wpa_s->ctrl_iface = NULL;
407 if (wpa_s->conf != NULL) {
408 struct wpa_ssid *ssid;
409 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
410 wpas_notify_network_removed(wpa_s, ssid);
411 wpa_config_free(wpa_s->conf);
415 os_free(wpa_s->confname);
416 wpa_s->confname = NULL;
418 wpa_sm_set_eapol(wpa_s->wpa, NULL);
419 eapol_sm_deinit(wpa_s->eapol);
422 rsn_preauth_deinit(wpa_s->wpa);
425 wpa_tdls_deinit(wpa_s->wpa);
426 #endif /* CONFIG_TDLS */
428 pmksa_candidate_free(wpa_s->wpa);
429 wpa_sm_deinit(wpa_s->wpa);
431 wpa_blacklist_clear(wpa_s);
433 wpa_bss_deinit(wpa_s);
435 wpa_supplicant_cancel_scan(wpa_s);
436 wpa_supplicant_cancel_auth_timeout(wpa_s);
438 wpas_wps_deinit(wpa_s);
440 wpabuf_free(wpa_s->pending_eapol_rx);
441 wpa_s->pending_eapol_rx = NULL;
443 #ifdef CONFIG_IBSS_RSN
444 ibss_rsn_deinit(wpa_s->ibss_rsn);
445 wpa_s->ibss_rsn = NULL;
446 #endif /* CONFIG_IBSS_RSN */
451 wpa_supplicant_ap_deinit(wpa_s);
452 #endif /* CONFIG_AP */
455 wpas_p2p_deinit(wpa_s);
456 #endif /* CONFIG_P2P */
458 #ifdef CONFIG_OFFCHANNEL
459 offchannel_deinit(wpa_s);
460 #endif /* CONFIG_OFFCHANNEL */
462 wpa_supplicant_cancel_sched_scan(wpa_s);
464 os_free(wpa_s->next_scan_freqs);
465 wpa_s->next_scan_freqs = NULL;
467 gas_query_deinit(wpa_s->gas);
470 free_hw_features(wpa_s);
475 * wpa_clear_keys - Clear keys configured for the driver
476 * @wpa_s: Pointer to wpa_supplicant data
477 * @addr: Previously used BSSID or %NULL if not available
479 * This function clears the encryption keys that has been previously configured
482 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
484 if (wpa_s->keys_cleared) {
485 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
486 * timing issues with keys being cleared just before new keys
487 * are set or just after association or something similar. This
488 * shows up in group key handshake failing often because of the
489 * client not receiving the first encrypted packets correctly.
490 * Skipping some of the extra key clearing steps seems to help
491 * in completing group key handshake more reliably. */
492 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - "
493 "skip key clearing");
497 /* MLME-DELETEKEYS.request */
498 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0);
499 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0);
500 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0);
501 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0);
502 #ifdef CONFIG_IEEE80211W
503 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0);
504 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0);
505 #endif /* CONFIG_IEEE80211W */
507 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
509 /* MLME-SETPROTECTION.request(None) */
510 wpa_drv_mlme_setprotection(
512 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
513 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
515 wpa_s->keys_cleared = 1;
520 * wpa_supplicant_state_txt - Get the connection state name as a text string
521 * @state: State (wpa_state; WPA_*)
522 * Returns: The state name as a printable text string
524 const char * wpa_supplicant_state_txt(enum wpa_states state)
527 case WPA_DISCONNECTED:
528 return "DISCONNECTED";
531 case WPA_INTERFACE_DISABLED:
532 return "INTERFACE_DISABLED";
535 case WPA_AUTHENTICATING:
536 return "AUTHENTICATING";
537 case WPA_ASSOCIATING:
538 return "ASSOCIATING";
541 case WPA_4WAY_HANDSHAKE:
542 return "4WAY_HANDSHAKE";
543 case WPA_GROUP_HANDSHAKE:
544 return "GROUP_HANDSHAKE";
555 static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
557 if (wpas_driver_bss_selection(wpa_s))
559 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
562 bgscan_deinit(wpa_s);
563 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
564 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
565 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
568 * Live without bgscan; it is only used as a roaming
569 * optimization, so the initial connection is not
573 wpa_s->bgscan_ssid = wpa_s->current_ssid;
575 wpa_s->bgscan_ssid = NULL;
579 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
581 if (wpa_s->bgscan_ssid != NULL) {
582 bgscan_deinit(wpa_s);
583 wpa_s->bgscan_ssid = NULL;
587 #endif /* CONFIG_BGSCAN */
591 * wpa_supplicant_set_state - Set current connection state
592 * @wpa_s: Pointer to wpa_supplicant data
593 * @state: The new connection state
595 * This function is called whenever the connection state changes, e.g.,
596 * association is completed for WPA/WPA2 4-Way Handshake is started.
598 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
599 enum wpa_states state)
601 enum wpa_states old_state = wpa_s->wpa_state;
603 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
604 wpa_supplicant_state_txt(wpa_s->wpa_state),
605 wpa_supplicant_state_txt(state));
607 if (state != WPA_SCANNING)
608 wpa_supplicant_notify_scanning(wpa_s, 0);
610 if (state == WPA_COMPLETED && wpa_s->new_connection) {
611 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
612 struct wpa_ssid *ssid = wpa_s->current_ssid;
613 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
614 MACSTR " completed %s [id=%d id_str=%s]",
615 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
616 "(reauth)" : "(auth)",
617 ssid ? ssid->id : -1,
618 ssid && ssid->id_str ? ssid->id_str : "");
619 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
620 wpa_s->new_connection = 0;
621 wpa_s->reassociated_connection = 1;
622 wpa_drv_set_operstate(wpa_s, 1);
623 #ifndef IEEE8021X_EAPOL
624 wpa_drv_set_supp_port(wpa_s, 1);
625 #endif /* IEEE8021X_EAPOL */
626 wpa_s->after_wps = 0;
628 wpas_p2p_completed(wpa_s);
629 #endif /* CONFIG_P2P */
630 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
631 state == WPA_ASSOCIATED) {
632 wpa_s->new_connection = 1;
633 wpa_drv_set_operstate(wpa_s, 0);
634 #ifndef IEEE8021X_EAPOL
635 wpa_drv_set_supp_port(wpa_s, 0);
636 #endif /* IEEE8021X_EAPOL */
638 wpa_s->wpa_state = state;
641 if (state == WPA_COMPLETED)
642 wpa_supplicant_start_bgscan(wpa_s);
644 wpa_supplicant_stop_bgscan(wpa_s);
645 #endif /* CONFIG_BGSCAN */
647 if (wpa_s->wpa_state != old_state) {
648 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
650 if (wpa_s->wpa_state == WPA_COMPLETED ||
651 old_state == WPA_COMPLETED)
652 wpas_notify_auth_changed(wpa_s);
657 void wpa_supplicant_terminate_proc(struct wpa_global *global)
661 struct wpa_supplicant *wpa_s = global->ifaces;
663 if (wpas_wps_terminate_pending(wpa_s) == 1)
667 #endif /* CONFIG_WPS */
674 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
676 struct wpa_global *global = signal_ctx;
677 struct wpa_supplicant *wpa_s;
678 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
679 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
682 wpa_supplicant_terminate_proc(global);
686 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
688 enum wpa_states old_state = wpa_s->wpa_state;
690 wpa_s->pairwise_cipher = 0;
691 wpa_s->group_cipher = 0;
692 wpa_s->mgmt_group_cipher = 0;
694 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
695 wpa_s->wpa_state = WPA_DISCONNECTED;
697 if (wpa_s->wpa_state != old_state)
698 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
703 * wpa_supplicant_reload_configuration - Reload configuration data
704 * @wpa_s: Pointer to wpa_supplicant data
705 * Returns: 0 on success or -1 if configuration parsing failed
707 * This function can be used to request that the configuration data is reloaded
708 * (e.g., after configuration file change). This function is reloading
709 * configuration only for one interface, so this may need to be called multiple
710 * times if %wpa_supplicant is controlling multiple interfaces and all
711 * interfaces need reconfiguration.
713 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
715 struct wpa_config *conf;
719 if (wpa_s->confname == NULL)
721 conf = wpa_config_read(wpa_s->confname);
723 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
724 "file '%s' - exiting", wpa_s->confname);
727 conf->changed_parameters = (unsigned int) -1;
729 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
730 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
731 os_strcmp(conf->ctrl_interface,
732 wpa_s->conf->ctrl_interface) != 0);
734 if (reconf_ctrl && wpa_s->ctrl_iface) {
735 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
736 wpa_s->ctrl_iface = NULL;
739 eapol_sm_invalidate_cached_session(wpa_s->eapol);
740 if (wpa_s->current_ssid) {
741 wpa_supplicant_deauthenticate(wpa_s,
742 WLAN_REASON_DEAUTH_LEAVING);
746 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
747 * pkcs11_engine_path, pkcs11_module_path.
749 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
751 * Clear forced success to clear EAP state for next
754 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
756 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
757 wpa_sm_set_config(wpa_s->wpa, NULL);
758 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
759 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
760 rsn_preauth_deinit(wpa_s->wpa);
762 old_ap_scan = wpa_s->conf->ap_scan;
763 wpa_config_free(wpa_s->conf);
765 if (old_ap_scan != wpa_s->conf->ap_scan)
766 wpas_notify_ap_scan_changed(wpa_s);
769 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
771 wpa_supplicant_update_config(wpa_s);
773 wpa_supplicant_clear_status(wpa_s);
774 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
775 wpa_s->reassociate = 1;
776 wpa_supplicant_req_scan(wpa_s, 0, 0);
778 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
783 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
785 struct wpa_global *global = signal_ctx;
786 struct wpa_supplicant *wpa_s;
787 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
788 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
790 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
791 wpa_supplicant_terminate_proc(global);
797 enum wpa_cipher cipher_suite2driver(int cipher)
800 case WPA_CIPHER_NONE:
802 case WPA_CIPHER_WEP40:
804 case WPA_CIPHER_WEP104:
805 return CIPHER_WEP104;
806 case WPA_CIPHER_CCMP:
808 case WPA_CIPHER_TKIP:
815 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
818 case WPA_KEY_MGMT_NONE:
819 return KEY_MGMT_NONE;
820 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
821 return KEY_MGMT_802_1X_NO_WPA;
822 case WPA_KEY_MGMT_IEEE8021X:
823 return KEY_MGMT_802_1X;
824 case WPA_KEY_MGMT_WPA_NONE:
825 return KEY_MGMT_WPA_NONE;
826 case WPA_KEY_MGMT_FT_IEEE8021X:
827 return KEY_MGMT_FT_802_1X;
828 case WPA_KEY_MGMT_FT_PSK:
829 return KEY_MGMT_FT_PSK;
830 case WPA_KEY_MGMT_IEEE8021X_SHA256:
831 return KEY_MGMT_802_1X_SHA256;
832 case WPA_KEY_MGMT_PSK_SHA256:
833 return KEY_MGMT_PSK_SHA256;
834 case WPA_KEY_MGMT_WPS:
836 case WPA_KEY_MGMT_PSK:
843 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
844 struct wpa_ssid *ssid,
845 struct wpa_ie_data *ie)
847 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
850 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
851 "from association info");
856 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
858 if (!(ie->group_cipher & ssid->group_cipher)) {
859 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
860 "cipher 0x%x (mask 0x%x) - reject",
861 ie->group_cipher, ssid->group_cipher);
864 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
865 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
866 "cipher 0x%x (mask 0x%x) - reject",
867 ie->pairwise_cipher, ssid->pairwise_cipher);
870 if (!(ie->key_mgmt & ssid->key_mgmt)) {
871 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
872 "management 0x%x (mask 0x%x) - reject",
873 ie->key_mgmt, ssid->key_mgmt);
877 #ifdef CONFIG_IEEE80211W
878 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
879 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
880 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
881 "that does not support management frame protection - "
885 #endif /* CONFIG_IEEE80211W */
892 * wpa_supplicant_set_suites - Set authentication and encryption parameters
893 * @wpa_s: Pointer to wpa_supplicant data
894 * @bss: Scan results for the selected BSS, or %NULL if not available
895 * @ssid: Configuration data for the selected network
896 * @wpa_ie: Buffer for the WPA/RSN IE
897 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
898 * used buffer length in case the functions returns success.
899 * Returns: 0 on success or -1 on failure
901 * This function is used to configure authentication and encryption parameters
902 * based on the network configuration and scan result for the selected BSS (if
905 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
906 struct wpa_bss *bss, struct wpa_ssid *ssid,
907 u8 *wpa_ie, size_t *wpa_ie_len)
909 struct wpa_ie_data ie;
911 const u8 *bss_wpa, *bss_rsn;
914 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
915 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
917 bss_wpa = bss_rsn = NULL;
919 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
920 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
921 (ie.group_cipher & ssid->group_cipher) &&
922 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
923 (ie.key_mgmt & ssid->key_mgmt)) {
924 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
925 proto = WPA_PROTO_RSN;
926 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
927 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
928 (ie.group_cipher & ssid->group_cipher) &&
929 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
930 (ie.key_mgmt & ssid->key_mgmt)) {
931 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
932 proto = WPA_PROTO_WPA;
934 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
937 if (ssid->proto & WPA_PROTO_RSN)
938 proto = WPA_PROTO_RSN;
940 proto = WPA_PROTO_WPA;
941 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
942 os_memset(&ie, 0, sizeof(ie));
943 ie.group_cipher = ssid->group_cipher;
944 ie.pairwise_cipher = ssid->pairwise_cipher;
945 ie.key_mgmt = ssid->key_mgmt;
946 #ifdef CONFIG_IEEE80211W
947 ie.mgmt_group_cipher =
948 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
949 WPA_CIPHER_AES_128_CMAC : 0;
950 #endif /* CONFIG_IEEE80211W */
951 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
952 "based on configuration");
957 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
958 "pairwise %d key_mgmt %d proto %d",
959 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
960 #ifdef CONFIG_IEEE80211W
961 if (ssid->ieee80211w) {
962 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
963 ie.mgmt_group_cipher);
965 #endif /* CONFIG_IEEE80211W */
967 wpa_s->wpa_proto = proto;
968 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
969 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
970 !!(ssid->proto & WPA_PROTO_RSN));
972 if (bss || !wpa_s->ap_ies_from_associnfo) {
973 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
974 bss_wpa ? 2 + bss_wpa[1] : 0) ||
975 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
976 bss_rsn ? 2 + bss_rsn[1] : 0))
980 sel = ie.group_cipher & ssid->group_cipher;
981 if (sel & WPA_CIPHER_CCMP) {
982 wpa_s->group_cipher = WPA_CIPHER_CCMP;
983 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
984 } else if (sel & WPA_CIPHER_TKIP) {
985 wpa_s->group_cipher = WPA_CIPHER_TKIP;
986 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
987 } else if (sel & WPA_CIPHER_WEP104) {
988 wpa_s->group_cipher = WPA_CIPHER_WEP104;
989 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
990 } else if (sel & WPA_CIPHER_WEP40) {
991 wpa_s->group_cipher = WPA_CIPHER_WEP40;
992 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
994 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
999 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
1000 if (sel & WPA_CIPHER_CCMP) {
1001 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
1002 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
1003 } else if (sel & WPA_CIPHER_TKIP) {
1004 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
1005 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
1006 } else if (sel & WPA_CIPHER_NONE) {
1007 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
1008 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
1010 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
1015 sel = ie.key_mgmt & ssid->key_mgmt;
1017 #ifdef CONFIG_IEEE80211R
1018 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
1019 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
1020 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
1021 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1022 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
1023 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
1024 #endif /* CONFIG_IEEE80211R */
1025 #ifdef CONFIG_IEEE80211W
1026 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1027 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
1028 wpa_dbg(wpa_s, MSG_DEBUG,
1029 "WPA: using KEY_MGMT 802.1X with SHA256");
1030 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1031 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
1032 wpa_dbg(wpa_s, MSG_DEBUG,
1033 "WPA: using KEY_MGMT PSK with SHA256");
1034 #endif /* CONFIG_IEEE80211W */
1035 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1036 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1037 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
1038 } else if (sel & WPA_KEY_MGMT_PSK) {
1039 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
1040 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
1041 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1042 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
1043 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
1045 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1046 "authenticated key management type");
1050 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1051 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1052 wpa_s->pairwise_cipher);
1053 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1055 #ifdef CONFIG_IEEE80211W
1056 sel = ie.mgmt_group_cipher;
1057 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
1058 !(ie.capabilities & WPA_CAPABILITY_MFPC))
1060 if (sel & WPA_CIPHER_AES_128_CMAC) {
1061 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1062 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1065 wpa_s->mgmt_group_cipher = 0;
1066 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
1068 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1069 wpa_s->mgmt_group_cipher);
1070 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
1071 #endif /* CONFIG_IEEE80211W */
1073 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
1074 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
1078 if (ssid->key_mgmt &
1079 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
1081 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
1082 #ifndef CONFIG_NO_PBKDF2
1083 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1086 pbkdf2_sha1(ssid->passphrase, (char *) bss->ssid,
1087 bss->ssid_len, 4096, psk, PMK_LEN);
1088 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1090 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1092 #endif /* CONFIG_NO_PBKDF2 */
1094 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1101 * wpa_supplicant_associate - Request association
1102 * @wpa_s: Pointer to wpa_supplicant data
1103 * @bss: Scan results for the selected BSS, or %NULL if not available
1104 * @ssid: Configuration data for the selected network
1106 * This function is used to request %wpa_supplicant to associate with a BSS.
1108 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
1109 struct wpa_bss *bss, struct wpa_ssid *ssid)
1113 int use_crypt, ret, i, bssid_changed;
1114 int algs = WPA_AUTH_ALG_OPEN;
1115 enum wpa_cipher cipher_pairwise, cipher_group;
1116 struct wpa_driver_associate_params params;
1117 int wep_keys_set = 0;
1118 struct wpa_driver_capa capa;
1119 int assoc_failed = 0;
1120 struct wpa_ssid *old_ssid;
1122 #ifdef CONFIG_IBSS_RSN
1123 ibss_rsn_deinit(wpa_s->ibss_rsn);
1124 wpa_s->ibss_rsn = NULL;
1125 #endif /* CONFIG_IBSS_RSN */
1127 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1128 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1130 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1131 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1135 wpa_supplicant_create_ap(wpa_s, ssid);
1136 wpa_s->current_bss = bss;
1137 #else /* CONFIG_AP */
1138 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1140 #endif /* CONFIG_AP */
1146 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1148 #endif /* CONFIG_TDLS */
1150 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1151 ssid->mode == IEEE80211_MODE_INFRA) {
1152 sme_authenticate(wpa_s, bss, ssid);
1156 os_memset(¶ms, 0, sizeof(params));
1157 wpa_s->reassociate = 0;
1158 if (bss && !wpas_driver_bss_selection(wpa_s)) {
1159 #ifdef CONFIG_IEEE80211R
1160 const u8 *ie, *md = NULL;
1161 #endif /* CONFIG_IEEE80211R */
1162 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1163 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1164 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
1165 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1166 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1167 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1169 wpas_notify_bssid_changed(wpa_s);
1170 #ifdef CONFIG_IEEE80211R
1171 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1172 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1174 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
1176 /* Prepare for the next transition */
1177 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
1179 #endif /* CONFIG_IEEE80211R */
1181 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1182 wpa_s->conf->ap_scan == 2 &&
1183 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1184 /* Use ap_scan==1 style network selection to find the network
1186 wpa_s->scan_req = 2;
1187 wpa_s->reassociate = 1;
1188 wpa_supplicant_req_scan(wpa_s, 0, 0);
1190 #endif /* CONFIG_WPS */
1192 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1193 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1194 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1196 wpa_supplicant_cancel_sched_scan(wpa_s);
1197 wpa_supplicant_cancel_scan(wpa_s);
1199 /* Starting new association, so clear the possibly used WPA IE from the
1200 * previous association. */
1201 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1203 #ifdef IEEE8021X_EAPOL
1204 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1206 if (ssid->non_leap == 0)
1207 algs = WPA_AUTH_ALG_LEAP;
1209 algs |= WPA_AUTH_ALG_LEAP;
1212 #endif /* IEEE8021X_EAPOL */
1213 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1214 if (ssid->auth_alg) {
1215 algs = ssid->auth_alg;
1216 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1220 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1221 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
1222 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1223 WPA_KEY_MGMT_FT_IEEE8021X |
1224 WPA_KEY_MGMT_FT_PSK |
1225 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1226 WPA_KEY_MGMT_PSK_SHA256))) {
1227 int try_opportunistic;
1228 try_opportunistic = ssid->proactive_key_caching &&
1229 (ssid->proto & WPA_PROTO_RSN);
1230 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1231 wpa_s->current_ssid,
1232 try_opportunistic) == 0)
1233 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1234 wpa_ie_len = sizeof(wpa_ie);
1235 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1236 wpa_ie, &wpa_ie_len)) {
1237 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1238 "key management and encryption suites");
1241 } else if (ssid->key_mgmt &
1242 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1243 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1244 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1245 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1246 wpa_ie_len = sizeof(wpa_ie);
1247 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1248 wpa_ie, &wpa_ie_len)) {
1249 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1250 "key management and encryption suites (no "
1255 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1256 struct wpabuf *wps_ie;
1257 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1258 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1259 wpa_ie_len = wpabuf_len(wps_ie);
1260 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1263 wpabuf_free(wps_ie);
1264 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1265 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1266 params.wps = WPS_MODE_PRIVACY;
1268 params.wps = WPS_MODE_OPEN;
1269 wpa_s->wpa_proto = 0;
1270 #endif /* CONFIG_WPS */
1272 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1274 wpa_s->wpa_proto = 0;
1278 if (wpa_s->global->p2p) {
1283 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
1284 pos = wpa_ie + wpa_ie_len;
1285 len = sizeof(wpa_ie) - wpa_ie_len;
1286 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
1291 wpa_s->cross_connect_disallowed = 0;
1294 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1296 wpa_s->cross_connect_disallowed =
1297 p2p_get_cross_connect_disallowed(p2p);
1299 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1301 wpa_s->cross_connect_disallowed ?
1302 "disallows" : "allows");
1305 #endif /* CONFIG_P2P */
1307 #ifdef CONFIG_INTERWORKING
1308 if (wpa_s->conf->interworking) {
1310 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
1312 os_memmove(pos + 6, pos, wpa_ie_len - (pos - wpa_ie));
1314 *pos++ = WLAN_EID_EXT_CAPAB;
1319 *pos++ = 0x80; /* Bit 31 - Interworking */
1321 #endif /* CONFIG_INTERWORKING */
1323 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1325 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1326 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1327 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1328 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1329 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1331 if (wpa_set_wep_keys(wpa_s, ssid)) {
1336 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1339 #ifdef IEEE8021X_EAPOL
1340 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1341 if ((ssid->eapol_flags &
1342 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1343 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1347 /* Assume that dynamic WEP-104 keys will be used and
1348 * set cipher suites in order for drivers to expect
1350 cipher_pairwise = cipher_group = CIPHER_WEP104;
1353 #endif /* IEEE8021X_EAPOL */
1355 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1356 /* Set the key before (and later after) association */
1357 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1360 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1362 params.ssid = bss->ssid;
1363 params.ssid_len = bss->ssid_len;
1364 if (!wpas_driver_bss_selection(wpa_s)) {
1365 params.bssid = bss->bssid;
1366 params.freq = bss->freq;
1369 params.ssid = ssid->ssid;
1370 params.ssid_len = ssid->ssid_len;
1372 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1374 params.freq = ssid->frequency; /* Initial channel for IBSS */
1375 params.wpa_ie = wpa_ie;
1376 params.wpa_ie_len = wpa_ie_len;
1377 params.pairwise_suite = cipher_pairwise;
1378 params.group_suite = cipher_group;
1379 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1380 params.wpa_proto = wpa_s->wpa_proto;
1381 params.auth_alg = algs;
1382 params.mode = ssid->mode;
1383 for (i = 0; i < NUM_WEP_KEYS; i++) {
1384 if (ssid->wep_key_len[i])
1385 params.wep_key[i] = ssid->wep_key[i];
1386 params.wep_key_len[i] = ssid->wep_key_len[i];
1388 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1390 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1391 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1392 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1393 params.passphrase = ssid->passphrase;
1395 params.psk = ssid->psk;
1398 params.drop_unencrypted = use_crypt;
1400 #ifdef CONFIG_IEEE80211W
1401 params.mgmt_frame_protection = ssid->ieee80211w;
1402 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
1403 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1404 struct wpa_ie_data ie;
1405 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1407 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1408 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1409 "MFP: require MFP");
1410 params.mgmt_frame_protection =
1411 MGMT_FRAME_PROTECTION_REQUIRED;
1414 #endif /* CONFIG_IEEE80211W */
1416 params.p2p = ssid->p2p_group;
1418 if (wpa_s->parent->set_sta_uapsd)
1419 params.uapsd = wpa_s->parent->sta_uapsd;
1423 ret = wpa_drv_associate(wpa_s, ¶ms);
1425 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1427 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1429 * The driver is known to mean what is saying, so we
1430 * can stop right here; the association will not
1433 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1434 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1437 /* try to continue anyway; new association will be tried again
1442 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1443 /* Set the key after the association just in case association
1444 * cleared the previously configured key. */
1445 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1446 /* No need to timeout authentication since there is no key
1448 wpa_supplicant_cancel_auth_timeout(wpa_s);
1449 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1450 #ifdef CONFIG_IBSS_RSN
1451 } else if (ssid->mode == WPAS_MODE_IBSS &&
1452 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1453 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1455 * RSN IBSS authentication is per-STA and we can disable the
1456 * per-BSSID authentication.
1458 wpa_supplicant_cancel_auth_timeout(wpa_s);
1459 #endif /* CONFIG_IBSS_RSN */
1461 /* Timeout for IEEE 802.11 authentication and association */
1465 /* give IBSS a bit more time */
1466 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1467 } else if (wpa_s->conf->ap_scan == 1) {
1468 /* give IBSS a bit more time */
1469 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1471 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1474 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1475 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1476 /* Set static WEP keys again */
1477 wpa_set_wep_keys(wpa_s, ssid);
1480 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1482 * Do not allow EAP session resumption between different
1483 * network configurations.
1485 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1487 old_ssid = wpa_s->current_ssid;
1488 wpa_s->current_ssid = ssid;
1489 wpa_s->current_bss = bss;
1490 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1491 wpa_supplicant_initiate_eapol(wpa_s);
1492 if (old_ssid != wpa_s->current_ssid)
1493 wpas_notify_network_changed(wpa_s);
1497 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1500 struct wpa_ssid *old_ssid;
1502 wpa_clear_keys(wpa_s, addr);
1503 wpa_supplicant_mark_disassoc(wpa_s);
1504 old_ssid = wpa_s->current_ssid;
1505 wpa_s->current_ssid = NULL;
1506 wpa_s->current_bss = NULL;
1507 wpa_sm_set_config(wpa_s->wpa, NULL);
1508 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1509 if (old_ssid != wpa_s->current_ssid)
1510 wpas_notify_network_changed(wpa_s);
1511 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1516 * wpa_supplicant_disassociate - Disassociate the current connection
1517 * @wpa_s: Pointer to wpa_supplicant data
1518 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1520 * This function is used to request %wpa_supplicant to disassociate with the
1523 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1528 if (!is_zero_ether_addr(wpa_s->bssid)) {
1529 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1530 addr = wpa_s->bssid;
1533 wpa_supplicant_clear_connection(wpa_s, addr);
1538 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1539 * @wpa_s: Pointer to wpa_supplicant data
1540 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1542 * This function is used to request %wpa_supplicant to deauthenticate from the
1545 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1550 if (!is_zero_ether_addr(wpa_s->bssid)) {
1551 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid, reason_code);
1552 addr = wpa_s->bssid;
1555 wpa_supplicant_clear_connection(wpa_s, addr);
1560 * wpa_supplicant_enable_network - Mark a configured network as enabled
1561 * @wpa_s: wpa_supplicant structure for a network interface
1562 * @ssid: wpa_ssid structure for a configured network or %NULL
1564 * Enables the specified network or all networks if no network specified.
1566 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1567 struct wpa_ssid *ssid)
1569 struct wpa_ssid *other_ssid;
1573 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1574 other_ssid = other_ssid->next) {
1575 if (other_ssid->disabled == 2)
1576 continue; /* do not change persistent P2P group
1578 if (other_ssid == wpa_s->current_ssid &&
1579 other_ssid->disabled)
1580 wpa_s->reassociate = 1;
1582 was_disabled = other_ssid->disabled;
1584 other_ssid->disabled = 0;
1586 if (was_disabled != other_ssid->disabled)
1587 wpas_notify_network_enabled_changed(
1590 if (wpa_s->reassociate)
1591 wpa_supplicant_req_scan(wpa_s, 0, 0);
1592 } else if (ssid->disabled && ssid->disabled != 2) {
1593 if (wpa_s->current_ssid == NULL) {
1595 * Try to reassociate since there is no current
1596 * configuration and a new network was made available.
1598 wpa_s->reassociate = 1;
1599 wpa_supplicant_req_scan(wpa_s, 0, 0);
1602 was_disabled = ssid->disabled;
1606 if (was_disabled != ssid->disabled)
1607 wpas_notify_network_enabled_changed(wpa_s, ssid);
1613 * wpa_supplicant_disable_network - Mark a configured network as disabled
1614 * @wpa_s: wpa_supplicant structure for a network interface
1615 * @ssid: wpa_ssid structure for a configured network or %NULL
1617 * Disables the specified network or all networks if no network specified.
1619 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1620 struct wpa_ssid *ssid)
1622 struct wpa_ssid *other_ssid;
1626 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1627 other_ssid = other_ssid->next) {
1628 was_disabled = other_ssid->disabled;
1629 if (was_disabled == 2)
1630 continue; /* do not change persistent P2P group
1633 other_ssid->disabled = 1;
1635 if (was_disabled != other_ssid->disabled)
1636 wpas_notify_network_enabled_changed(
1639 if (wpa_s->current_ssid)
1640 wpa_supplicant_disassociate(
1641 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1642 } else if (ssid->disabled != 2) {
1643 if (ssid == wpa_s->current_ssid)
1644 wpa_supplicant_disassociate(
1645 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1647 was_disabled = ssid->disabled;
1651 if (was_disabled != ssid->disabled)
1652 wpas_notify_network_enabled_changed(wpa_s, ssid);
1658 * wpa_supplicant_select_network - Attempt association with a network
1659 * @wpa_s: wpa_supplicant structure for a network interface
1660 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1662 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1663 struct wpa_ssid *ssid)
1666 struct wpa_ssid *other_ssid;
1668 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1669 wpa_supplicant_disassociate(
1670 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1673 * Mark all other networks disabled or mark all networks enabled if no
1674 * network specified.
1676 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1677 other_ssid = other_ssid->next) {
1678 int was_disabled = other_ssid->disabled;
1679 if (was_disabled == 2)
1680 continue; /* do not change persistent P2P group data */
1682 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1684 if (was_disabled != other_ssid->disabled)
1685 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1688 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) {
1689 /* We are already associated with the selected network */
1690 wpa_printf(MSG_DEBUG, "Already associated with the "
1691 "selected network - do nothing");
1695 wpa_s->connect_without_scan = NULL;
1696 wpa_s->disconnected = 0;
1697 wpa_s->reassociate = 1;
1698 wpa_supplicant_req_scan(wpa_s, 0, 0);
1701 wpas_notify_network_selected(wpa_s, ssid);
1706 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1707 * @wpa_s: wpa_supplicant structure for a network interface
1708 * @ap_scan: AP scan mode
1709 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1712 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1717 if (ap_scan < 0 || ap_scan > 2)
1721 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
1722 wpa_s->wpa_state >= WPA_ASSOCIATING &&
1723 wpa_s->wpa_state < WPA_COMPLETED) {
1724 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
1725 "associating", wpa_s->conf->ap_scan, ap_scan);
1728 #endif /* ANDROID */
1730 old_ap_scan = wpa_s->conf->ap_scan;
1731 wpa_s->conf->ap_scan = ap_scan;
1733 if (old_ap_scan != wpa_s->conf->ap_scan)
1734 wpas_notify_ap_scan_changed(wpa_s);
1741 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1742 * @wpa_s: wpa_supplicant structure for a network interface
1743 * @expire_age: Expiration age in seconds
1744 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1747 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
1748 unsigned int bss_expire_age)
1750 if (bss_expire_age < 10) {
1751 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
1755 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
1757 wpa_s->conf->bss_expiration_age = bss_expire_age;
1764 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1765 * @wpa_s: wpa_supplicant structure for a network interface
1766 * @expire_count: number of scans after which an unseen BSS is reclaimed
1767 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1770 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
1771 unsigned int bss_expire_count)
1773 if (bss_expire_count < 1) {
1774 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
1778 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
1780 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
1787 * wpa_supplicant_set_debug_params - Set global debug params
1788 * @global: wpa_global structure
1789 * @debug_level: debug level
1790 * @debug_timestamp: determines if show timestamp in debug data
1791 * @debug_show_keys: determines if show keys in debug data
1792 * Returns: 0 if succeed or -1 if debug_level has wrong value
1794 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1795 int debug_timestamp, int debug_show_keys)
1798 int old_level, old_timestamp, old_show_keys;
1800 /* check for allowed debuglevels */
1801 if (debug_level != MSG_EXCESSIVE &&
1802 debug_level != MSG_MSGDUMP &&
1803 debug_level != MSG_DEBUG &&
1804 debug_level != MSG_INFO &&
1805 debug_level != MSG_WARNING &&
1806 debug_level != MSG_ERROR)
1809 old_level = wpa_debug_level;
1810 old_timestamp = wpa_debug_timestamp;
1811 old_show_keys = wpa_debug_show_keys;
1813 wpa_debug_level = debug_level;
1814 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1815 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1817 if (wpa_debug_level != old_level)
1818 wpas_notify_debug_level_changed(global);
1819 if (wpa_debug_timestamp != old_timestamp)
1820 wpas_notify_debug_timestamp_changed(global);
1821 if (wpa_debug_show_keys != old_show_keys)
1822 wpas_notify_debug_show_keys_changed(global);
1829 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1830 * @wpa_s: Pointer to wpa_supplicant data
1831 * Returns: A pointer to the current network structure or %NULL on failure
1833 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1835 struct wpa_ssid *entry;
1836 u8 ssid[MAX_SSID_LEN];
1842 res = wpa_drv_get_ssid(wpa_s, ssid);
1844 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
1850 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1851 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
1856 wired = wpa_s->conf->ap_scan == 0 &&
1857 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1859 entry = wpa_s->conf->ssid;
1861 if (!entry->disabled &&
1862 ((ssid_len == entry->ssid_len &&
1863 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1864 (!entry->bssid_set ||
1865 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1868 if (!entry->disabled &&
1869 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1870 (entry->ssid == NULL || entry->ssid_len == 0) &&
1871 (!entry->bssid_set ||
1872 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1874 #endif /* CONFIG_WPS */
1876 if (!entry->disabled && entry->bssid_set &&
1877 entry->ssid_len == 0 &&
1878 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
1881 entry = entry->next;
1888 static int select_driver(struct wpa_supplicant *wpa_s, int i)
1890 struct wpa_global *global = wpa_s->global;
1892 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
1893 global->drv_priv[i] = wpa_drivers[i]->global_init();
1894 if (global->drv_priv[i] == NULL) {
1895 wpa_printf(MSG_ERROR, "Failed to initialize driver "
1896 "'%s'", wpa_drivers[i]->name);
1901 wpa_s->driver = wpa_drivers[i];
1902 wpa_s->global_drv_priv = global->drv_priv[i];
1908 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1913 const char *pos, *driver = name;
1918 if (wpa_drivers[0] == NULL) {
1919 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
1925 /* default to first driver in the list */
1926 return select_driver(wpa_s, 0);
1930 pos = os_strchr(driver, ',');
1934 len = os_strlen(driver);
1936 for (i = 0; wpa_drivers[i]; i++) {
1937 if (os_strlen(wpa_drivers[i]->name) == len &&
1938 os_strncmp(driver, wpa_drivers[i]->name, len) ==
1940 return select_driver(wpa_s, i);
1946 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
1952 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1953 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1954 * with struct wpa_driver_ops::init()
1955 * @src_addr: Source address of the EAPOL frame
1956 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1957 * @len: Length of the EAPOL data
1959 * This function is called for each received EAPOL frame. Most driver
1960 * interfaces rely on more generic OS mechanism for receiving frames through
1961 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1962 * take care of received EAPOL frames and deliver them to the core supplicant
1963 * code by calling this function.
1965 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1966 const u8 *buf, size_t len)
1968 struct wpa_supplicant *wpa_s = ctx;
1970 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1971 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1973 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1975 * There is possible race condition between receiving the
1976 * association event and the EAPOL frame since they are coming
1977 * through different paths from the driver. In order to avoid
1978 * issues in trying to process the EAPOL frame before receiving
1979 * association information, lets queue it for processing until
1980 * the association event is received.
1982 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
1983 "of received EAPOL frame");
1984 wpabuf_free(wpa_s->pending_eapol_rx);
1985 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1986 if (wpa_s->pending_eapol_rx) {
1987 os_get_time(&wpa_s->pending_eapol_rx_time);
1988 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1995 if (wpa_s->ap_iface) {
1996 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1999 #endif /* CONFIG_AP */
2001 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
2002 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
2003 "no key management is configured");
2007 if (wpa_s->eapol_received == 0 &&
2008 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
2009 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
2010 wpa_s->wpa_state != WPA_COMPLETED) &&
2011 (wpa_s->current_ssid == NULL ||
2012 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
2013 /* Timeout for completing IEEE 802.1X and WPA authentication */
2014 wpa_supplicant_req_auth_timeout(
2016 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2017 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
2018 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
2021 wpa_s->eapol_received++;
2023 if (wpa_s->countermeasures) {
2024 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
2029 #ifdef CONFIG_IBSS_RSN
2030 if (wpa_s->current_ssid &&
2031 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
2032 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
2035 #endif /* CONFIG_IBSS_RSN */
2037 /* Source address of the incoming EAPOL frame could be compared to the
2038 * current BSSID. However, it is possible that a centralized
2039 * Authenticator could be using another MAC address than the BSSID of
2040 * an AP, so just allow any address to be used for now. The replies are
2041 * still sent to the current BSSID (if available), though. */
2043 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
2044 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
2045 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
2047 wpa_drv_poll(wpa_s);
2048 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
2049 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
2050 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2052 * Set portValid = TRUE here since we are going to skip 4-way
2053 * handshake processing which would normally set portValid. We
2054 * need this to allow the EAPOL state machines to be completed
2055 * without going through EAPOL-Key handshake.
2057 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2063 * wpa_supplicant_driver_init - Initialize driver interface parameters
2064 * @wpa_s: Pointer to wpa_supplicant data
2065 * Returns: 0 on success, -1 on failure
2067 * This function is called to initialize driver interface parameters.
2068 * wpa_drv_init() must have been called before this function to initialize the
2071 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
2073 static int interface_count = 0;
2075 if (wpa_s->driver->send_eapol) {
2076 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2078 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2079 } else if (!(wpa_s->drv_flags &
2080 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
2081 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2082 wpa_drv_get_mac_addr(wpa_s),
2084 wpa_supplicant_rx_eapol, wpa_s, 0);
2085 if (wpa_s->l2 == NULL)
2088 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2090 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
2093 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
2094 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
2098 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2099 MAC2STR(wpa_s->own_addr));
2101 if (wpa_s->bridge_ifname[0]) {
2102 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2103 "interface '%s'", wpa_s->bridge_ifname);
2104 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2107 wpa_supplicant_rx_eapol, wpa_s,
2109 if (wpa_s->l2_br == NULL) {
2110 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2111 "connection for the bridge interface '%s'",
2112 wpa_s->bridge_ifname);
2117 wpa_clear_keys(wpa_s, NULL);
2119 /* Make sure that TKIP countermeasures are not left enabled (could
2120 * happen if wpa_supplicant is killed during countermeasures. */
2121 wpa_drv_set_countermeasures(wpa_s, 0);
2123 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
2124 wpa_drv_flush_pmkid(wpa_s);
2126 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
2127 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
2128 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count,
2130 wpa_supplicant_req_scan(wpa_s, interface_count,
2134 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
2140 static int wpa_supplicant_daemon(const char *pid_file)
2142 wpa_printf(MSG_DEBUG, "Daemonize..");
2143 return os_daemonize(pid_file);
2147 static struct wpa_supplicant * wpa_supplicant_alloc(void)
2149 struct wpa_supplicant *wpa_s;
2151 wpa_s = os_zalloc(sizeof(*wpa_s));
2154 wpa_s->scan_req = 1;
2155 wpa_s->scan_interval = 5;
2156 wpa_s->new_connection = 1;
2157 wpa_s->parent = wpa_s;
2158 wpa_s->sched_scanning = 0;
2164 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2165 struct wpa_interface *iface)
2167 const char *ifname, *driver;
2168 struct wpa_driver_capa capa;
2170 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2171 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2172 iface->confname ? iface->confname : "N/A",
2173 iface->driver ? iface->driver : "default",
2174 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2175 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2177 if (iface->confname) {
2178 #ifdef CONFIG_BACKEND_FILE
2179 wpa_s->confname = os_rel2abs_path(iface->confname);
2180 if (wpa_s->confname == NULL) {
2181 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2182 "for configuration file '%s'.",
2186 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2187 iface->confname, wpa_s->confname);
2188 #else /* CONFIG_BACKEND_FILE */
2189 wpa_s->confname = os_strdup(iface->confname);
2190 #endif /* CONFIG_BACKEND_FILE */
2191 wpa_s->conf = wpa_config_read(wpa_s->confname);
2192 if (wpa_s->conf == NULL) {
2193 wpa_printf(MSG_ERROR, "Failed to read or parse "
2194 "configuration '%s'.", wpa_s->confname);
2199 * Override ctrl_interface and driver_param if set on command
2202 if (iface->ctrl_interface) {
2203 os_free(wpa_s->conf->ctrl_interface);
2204 wpa_s->conf->ctrl_interface =
2205 os_strdup(iface->ctrl_interface);
2208 if (iface->driver_param) {
2209 os_free(wpa_s->conf->driver_param);
2210 wpa_s->conf->driver_param =
2211 os_strdup(iface->driver_param);
2214 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2215 iface->driver_param);
2217 if (wpa_s->conf == NULL) {
2218 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2222 if (iface->ifname == NULL) {
2223 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2226 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2227 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2231 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2233 if (iface->bridge_ifname) {
2234 if (os_strlen(iface->bridge_ifname) >=
2235 sizeof(wpa_s->bridge_ifname)) {
2236 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2237 "name '%s'.", iface->bridge_ifname);
2240 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2241 sizeof(wpa_s->bridge_ifname));
2244 /* RSNA Supplicant Key Management - INITIALIZE */
2245 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2246 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2248 /* Initialize driver interface and register driver event handler before
2249 * L2 receive handler so that association events are processed before
2250 * EAPOL-Key packets if both become available for the same select()
2252 driver = iface->driver;
2254 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2257 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2258 if (wpa_s->drv_priv == NULL) {
2260 pos = driver ? os_strchr(driver, ',') : NULL;
2262 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
2263 "driver interface - try next driver wrapper");
2267 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
2271 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2272 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
2273 "driver_param '%s'", wpa_s->conf->driver_param);
2277 ifname = wpa_drv_get_ifname(wpa_s);
2278 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2279 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
2280 "interface name with '%s'", ifname);
2281 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2284 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2287 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2288 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2290 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2292 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2293 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2294 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2295 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2296 "dot11RSNAConfigPMKLifetime");
2300 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2301 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2302 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2303 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2304 "dot11RSNAConfigPMKReauthThreshold");
2308 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2309 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2310 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2311 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2312 "dot11RSNAConfigSATimeout");
2316 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
2317 &wpa_s->hw.num_modes,
2320 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2321 wpa_s->drv_capa_known = 1;
2322 wpa_s->drv_flags = capa.flags;
2323 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2324 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
2325 wpa_s->sched_scan_supported = capa.sched_scan_supported;
2326 wpa_s->max_match_sets = capa.max_match_sets;
2327 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
2328 wpa_s->max_stations = capa.max_stations;
2330 if (wpa_s->max_remain_on_chan == 0)
2331 wpa_s->max_remain_on_chan = 1000;
2333 if (wpa_supplicant_driver_init(wpa_s) < 0)
2337 if (wpa_tdls_init(wpa_s->wpa))
2339 #endif /* CONFIG_TDLS */
2341 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2342 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2343 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
2347 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2349 if (wpas_wps_init(wpa_s))
2352 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2354 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2356 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2357 if (wpa_s->ctrl_iface == NULL) {
2358 wpa_printf(MSG_ERROR,
2359 "Failed to initialize control interface '%s'.\n"
2360 "You may have another wpa_supplicant process "
2361 "already running or the file was\n"
2362 "left by an unclean termination of wpa_supplicant "
2363 "in which case you will need\n"
2364 "to manually remove this file before starting "
2365 "wpa_supplicant again.\n",
2366 wpa_s->conf->ctrl_interface);
2370 wpa_s->gas = gas_query_init(wpa_s);
2371 if (wpa_s->gas == NULL) {
2372 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
2377 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
2378 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
2381 #endif /* CONFIG_P2P */
2383 if (wpa_bss_init(wpa_s) < 0)
2390 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2393 if (wpa_s->drv_priv) {
2394 wpa_supplicant_deauthenticate(wpa_s,
2395 WLAN_REASON_DEAUTH_LEAVING);
2397 wpa_drv_set_countermeasures(wpa_s, 0);
2398 wpa_clear_keys(wpa_s, NULL);
2401 wpa_supplicant_cleanup(wpa_s);
2404 wpas_notify_iface_removed(wpa_s);
2406 if (wpa_s->drv_priv)
2407 wpa_drv_deinit(wpa_s);
2412 * wpa_supplicant_add_iface - Add a new network interface
2413 * @global: Pointer to global data from wpa_supplicant_init()
2414 * @iface: Interface configuration options
2415 * Returns: Pointer to the created interface or %NULL on failure
2417 * This function is used to add new network interfaces for %wpa_supplicant.
2418 * This can be called before wpa_supplicant_run() to add interfaces before the
2419 * main event loop has been started. In addition, new interfaces can be added
2420 * dynamically while %wpa_supplicant is already running. This could happen,
2421 * e.g., when a hotplug network adapter is inserted.
2423 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2424 struct wpa_interface *iface)
2426 struct wpa_supplicant *wpa_s;
2427 struct wpa_interface t_iface;
2428 struct wpa_ssid *ssid;
2430 if (global == NULL || iface == NULL)
2433 wpa_s = wpa_supplicant_alloc();
2437 wpa_s->global = global;
2440 if (global->params.override_driver) {
2441 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2443 iface->driver, global->params.override_driver);
2444 t_iface.driver = global->params.override_driver;
2446 if (global->params.override_ctrl_interface) {
2447 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2448 "ctrl_interface ('%s' -> '%s')",
2449 iface->ctrl_interface,
2450 global->params.override_ctrl_interface);
2451 t_iface.ctrl_interface =
2452 global->params.override_ctrl_interface;
2454 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2455 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2457 wpa_supplicant_deinit_iface(wpa_s, 0);
2462 /* Notify the control interfaces about new iface */
2463 if (wpas_notify_iface_added(wpa_s)) {
2464 wpa_supplicant_deinit_iface(wpa_s, 1);
2469 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2470 wpas_notify_network_added(wpa_s, ssid);
2472 wpa_s->next = global->ifaces;
2473 global->ifaces = wpa_s;
2475 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2482 * wpa_supplicant_remove_iface - Remove a network interface
2483 * @global: Pointer to global data from wpa_supplicant_init()
2484 * @wpa_s: Pointer to the network interface to be removed
2485 * Returns: 0 if interface was removed, -1 if interface was not found
2487 * This function can be used to dynamically remove network interfaces from
2488 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2489 * addition, this function is used to remove all remaining interfaces when
2490 * %wpa_supplicant is terminated.
2492 int wpa_supplicant_remove_iface(struct wpa_global *global,
2493 struct wpa_supplicant *wpa_s)
2495 struct wpa_supplicant *prev;
2497 /* Remove interface from the global list of interfaces */
2498 prev = global->ifaces;
2499 if (prev == wpa_s) {
2500 global->ifaces = wpa_s->next;
2502 while (prev && prev->next != wpa_s)
2506 prev->next = wpa_s->next;
2509 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2511 if (global->p2p_group_formation == wpa_s)
2512 global->p2p_group_formation = NULL;
2513 wpa_supplicant_deinit_iface(wpa_s, 1);
2521 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2522 * @wpa_s: Pointer to the network interface
2523 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2525 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
2527 const char *eapol_method;
2529 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
2530 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2534 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
2535 if (eapol_method == NULL)
2536 return "UNKNOWN-EAP";
2538 return eapol_method;
2543 * wpa_supplicant_get_iface - Get a new network interface
2544 * @global: Pointer to global data from wpa_supplicant_init()
2545 * @ifname: Interface name
2546 * Returns: Pointer to the interface or %NULL if not found
2548 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2551 struct wpa_supplicant *wpa_s;
2553 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2554 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2561 #ifndef CONFIG_NO_WPA_MSG
2562 static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
2564 struct wpa_supplicant *wpa_s = ctx;
2567 return wpa_s->ifname;
2569 #endif /* CONFIG_NO_WPA_MSG */
2573 * wpa_supplicant_init - Initialize %wpa_supplicant
2574 * @params: Parameters for %wpa_supplicant
2575 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2577 * This function is used to initialize %wpa_supplicant. After successful
2578 * initialization, the returned data pointer can be used to add and remove
2579 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2581 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2583 struct wpa_global *global;
2589 #ifndef CONFIG_NO_WPA_MSG
2590 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
2591 #endif /* CONFIG_NO_WPA_MSG */
2593 wpa_debug_open_file(params->wpa_debug_file_path);
2594 if (params->wpa_debug_syslog)
2595 wpa_debug_open_syslog();
2597 ret = eap_register_methods();
2599 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2601 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2602 "the same EAP type.");
2606 global = os_zalloc(sizeof(*global));
2609 dl_list_init(&global->p2p_srv_bonjour);
2610 dl_list_init(&global->p2p_srv_upnp);
2611 global->params.daemonize = params->daemonize;
2612 global->params.wait_for_monitor = params->wait_for_monitor;
2613 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2614 if (params->pid_file)
2615 global->params.pid_file = os_strdup(params->pid_file);
2616 if (params->ctrl_interface)
2617 global->params.ctrl_interface =
2618 os_strdup(params->ctrl_interface);
2619 if (params->override_driver)
2620 global->params.override_driver =
2621 os_strdup(params->override_driver);
2622 if (params->override_ctrl_interface)
2623 global->params.override_ctrl_interface =
2624 os_strdup(params->override_ctrl_interface);
2625 wpa_debug_level = global->params.wpa_debug_level =
2626 params->wpa_debug_level;
2627 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2628 params->wpa_debug_show_keys;
2629 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2630 params->wpa_debug_timestamp;
2632 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
2635 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2636 wpa_supplicant_deinit(global);
2640 random_init(params->entropy_file);
2642 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2643 if (global->ctrl_iface == NULL) {
2644 wpa_supplicant_deinit(global);
2648 if (wpas_notify_supplicant_initialized(global)) {
2649 wpa_supplicant_deinit(global);
2653 for (i = 0; wpa_drivers[i]; i++)
2654 global->drv_count++;
2655 if (global->drv_count == 0) {
2656 wpa_printf(MSG_ERROR, "No drivers enabled");
2657 wpa_supplicant_deinit(global);
2660 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2661 if (global->drv_priv == NULL) {
2662 wpa_supplicant_deinit(global);
2671 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2672 * @global: Pointer to global data from wpa_supplicant_init()
2673 * Returns: 0 after successful event loop run, -1 on failure
2675 * This function starts the main event loop and continues running as long as
2676 * there are any remaining events. In most cases, this function is running as
2677 * long as the %wpa_supplicant process in still in use.
2679 int wpa_supplicant_run(struct wpa_global *global)
2681 struct wpa_supplicant *wpa_s;
2683 if (global->params.daemonize &&
2684 wpa_supplicant_daemon(global->params.pid_file))
2687 if (global->params.wait_for_monitor) {
2688 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2689 if (wpa_s->ctrl_iface)
2690 wpa_supplicant_ctrl_iface_wait(
2694 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2695 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
2704 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2705 * @global: Pointer to global data from wpa_supplicant_init()
2707 * This function is called to deinitialize %wpa_supplicant and to free all
2708 * allocated resources. Remaining network interfaces will also be removed.
2710 void wpa_supplicant_deinit(struct wpa_global *global)
2718 wpas_p2p_deinit_global(global);
2719 #endif /* CONFIG_P2P */
2721 while (global->ifaces)
2722 wpa_supplicant_remove_iface(global, global->ifaces);
2724 if (global->ctrl_iface)
2725 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2727 wpas_notify_supplicant_deinitialized(global);
2729 eap_peer_unregister_methods();
2731 eap_server_unregister_methods();
2732 #endif /* CONFIG_AP */
2734 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2735 if (!global->drv_priv[i])
2737 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2739 os_free(global->drv_priv);
2745 if (global->params.pid_file) {
2746 os_daemonize_terminate(global->params.pid_file);
2747 os_free(global->params.pid_file);
2749 os_free(global->params.ctrl_interface);
2750 os_free(global->params.override_driver);
2751 os_free(global->params.override_ctrl_interface);
2754 wpa_debug_close_syslog();
2755 wpa_debug_close_file();
2759 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2761 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
2762 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2764 country[0] = wpa_s->conf->country[0];
2765 country[1] = wpa_s->conf->country[1];
2767 if (wpa_drv_set_country(wpa_s, country) < 0) {
2768 wpa_printf(MSG_ERROR, "Failed to set country code "
2774 wpas_wps_update_config(wpa_s);
2775 #endif /* CONFIG_WPS */
2778 wpas_p2p_update_config(wpa_s);
2779 #endif /* CONFIG_P2P */
2781 wpa_s->conf->changed_parameters = 0;
2785 static void add_freq(int *freqs, int *num_freqs, int freq)
2789 for (i = 0; i < *num_freqs; i++) {
2790 if (freqs[i] == freq)
2794 freqs[*num_freqs] = freq;
2799 static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
2801 struct wpa_bss *bss, *cbss;
2802 const int max_freqs = 10;
2806 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
2810 cbss = wpa_s->current_bss;
2812 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2815 if (bss->ssid_len == cbss->ssid_len &&
2816 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
2817 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
2818 add_freq(freqs, &num_freqs, bss->freq);
2819 if (num_freqs == max_freqs)
2824 if (num_freqs == 0) {
2833 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
2840 * Add the failed BSSID into the blacklist and speed up next scan
2841 * attempt if there could be other APs that could accept association.
2842 * The current blacklist count indicates how many times we have tried
2843 * connecting to this AP and multiple attempts mean that other APs are
2844 * either not available or has already been tried, so that we can start
2845 * increasing the delay here to avoid constant scanning.
2847 count = wpa_blacklist_add(wpa_s, bssid);
2848 if (count == 1 && wpa_s->current_bss) {
2850 * This BSS was not in the blacklist before. If there is
2851 * another BSS available for the same ESS, we should try that
2852 * next. Otherwise, we may as well try this one once more
2853 * before allowing other, likely worse, ESSes to be considered.
2855 freqs = get_bss_freqs_in_ess(wpa_s);
2857 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
2858 "has been seen; try it next");
2859 wpa_blacklist_add(wpa_s, bssid);
2861 * On the next scan, go through only the known channels
2862 * used in this ESS based on previous scans to speed up
2863 * common load balancing use case.
2865 os_free(wpa_s->next_scan_freqs);
2866 wpa_s->next_scan_freqs = freqs;
2885 * TODO: if more than one possible AP is available in scan results,
2886 * could try the other ones before requesting a new scan.
2888 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
2889 1000 * (timeout % 1000));
2893 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
2895 return wpa_s->conf->ap_scan == 2 ||
2896 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);