3 * Copyright (c) 2003-2010, 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 "eapol_supp/eapol_supp_sm.h"
23 #include "eap_peer/eap.h"
24 #include "eap_server/eap_methods.h"
25 #include "rsn_supp/wpa.h"
28 #include "l2_packet/l2_packet.h"
29 #include "wpa_supplicant_i.h"
31 #include "ctrl_iface.h"
32 #include "pcsc_funcs.h"
33 #include "common/version.h"
34 #include "rsn_supp/preauth.h"
35 #include "rsn_supp/pmksa_cache.h"
36 #include "common/wpa_ctrl.h"
38 #include "common/ieee802_11_defs.h"
40 #include "blacklist.h"
41 #include "wpas_glue.h"
42 #include "wps_supplicant.h"
46 #include "p2p_supplicant.h"
52 const char *wpa_supplicant_version =
53 "wpa_supplicant v" VERSION_STR "\n"
54 "Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi> and contributors";
56 const char *wpa_supplicant_license =
57 "This program is free software. You can distribute it and/or modify it\n"
58 "under the terms of the GNU General Public License version 2.\n"
60 "Alternatively, this software may be distributed under the terms of the\n"
61 "BSD license. See README and COPYING for more details.\n"
62 #ifdef EAP_TLS_OPENSSL
63 "\nThis product includes software developed by the OpenSSL Project\n"
64 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
65 #endif /* EAP_TLS_OPENSSL */
68 #ifndef CONFIG_NO_STDOUT_DEBUG
69 /* Long text divided into parts in order to fit in C89 strings size limits. */
70 const char *wpa_supplicant_full_license1 =
71 "This program is free software; you can redistribute it and/or modify\n"
72 "it under the terms of the GNU General Public License version 2 as\n"
73 "published by the Free Software Foundation.\n"
75 "This program is distributed in the hope that it will be useful,\n"
76 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
77 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
78 "GNU General Public License for more details.\n"
80 const char *wpa_supplicant_full_license2 =
81 "You should have received a copy of the GNU General Public License\n"
82 "along with this program; if not, write to the Free Software\n"
83 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
85 "Alternatively, this software may be distributed under the terms of the\n"
88 "Redistribution and use in source and binary forms, with or without\n"
89 "modification, are permitted provided that the following conditions are\n"
92 const char *wpa_supplicant_full_license3 =
93 "1. Redistributions of source code must retain the above copyright\n"
94 " notice, this list of conditions and the following disclaimer.\n"
96 "2. Redistributions in binary form must reproduce the above copyright\n"
97 " notice, this list of conditions and the following disclaimer in the\n"
98 " documentation and/or other materials provided with the distribution.\n"
100 const char *wpa_supplicant_full_license4 =
101 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
102 " names of its contributors may be used to endorse or promote products\n"
103 " derived from this software without specific prior written permission.\n"
105 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
106 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
107 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
108 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
109 const char *wpa_supplicant_full_license5 =
110 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
111 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
112 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
113 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
114 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
115 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
116 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
118 #endif /* CONFIG_NO_STDOUT_DEBUG */
120 extern int wpa_debug_level;
121 extern int wpa_debug_show_keys;
122 extern int wpa_debug_timestamp;
123 extern struct wpa_driver_ops *wpa_drivers[];
125 /* Configure default/group WEP keys for static WEP */
126 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
130 for (i = 0; i < NUM_WEP_KEYS; i++) {
131 if (ssid->wep_key_len[i] == 0)
135 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
136 (u8 *) "\xff\xff\xff\xff\xff\xff",
137 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
138 ssid->wep_key[i], ssid->wep_key_len[i]);
145 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
146 struct wpa_ssid *ssid)
153 /* IBSS/WPA-None uses only one key (Group) for both receiving and
154 * sending unicast and multicast packets. */
156 if (ssid->mode != WPAS_MODE_IBSS) {
157 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
158 "for WPA-None", ssid->mode);
162 if (!ssid->psk_set) {
163 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
167 switch (wpa_s->group_cipher) {
168 case WPA_CIPHER_CCMP:
169 os_memcpy(key, ssid->psk, 16);
173 case WPA_CIPHER_TKIP:
174 /* WPA-None uses the same Michael MIC key for both TX and RX */
175 os_memcpy(key, ssid->psk, 16 + 8);
176 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
181 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
182 "WPA-None", wpa_s->group_cipher);
186 /* TODO: should actually remember the previously used seq#, both for TX
187 * and RX from each STA.. */
189 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
190 0, 1, seq, 6, key, keylen);
194 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
196 struct wpa_supplicant *wpa_s = eloop_ctx;
197 const u8 *bssid = wpa_s->bssid;
198 if (is_zero_ether_addr(bssid))
199 bssid = wpa_s->pending_bssid;
200 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
202 wpa_blacklist_add(wpa_s, bssid);
203 wpa_sm_notify_disassoc(wpa_s->wpa);
204 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
205 wpa_s->reassociate = 1;
206 wpa_supplicant_req_scan(wpa_s, 0, 0);
211 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
212 * @wpa_s: Pointer to wpa_supplicant data
213 * @sec: Number of seconds after which to time out authentication
214 * @usec: Number of microseconds after which to time out authentication
216 * This function is used to schedule a timeout for the current authentication
219 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
222 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
223 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
226 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
227 "%d usec", sec, usec);
228 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
229 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
234 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
235 * @wpa_s: Pointer to wpa_supplicant data
237 * This function is used to cancel authentication timeout scheduled with
238 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
241 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
243 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
244 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
245 wpa_blacklist_del(wpa_s, wpa_s->bssid);
250 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
251 * @wpa_s: Pointer to wpa_supplicant data
253 * This function is used to configure EAPOL state machine based on the selected
254 * authentication mode.
256 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
258 #ifdef IEEE8021X_EAPOL
259 struct eapol_config eapol_conf;
260 struct wpa_ssid *ssid = wpa_s->current_ssid;
262 #ifdef CONFIG_IBSS_RSN
263 if (ssid->mode == WPAS_MODE_IBSS &&
264 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
265 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
267 * RSN IBSS authentication is per-STA and we can disable the
268 * per-BSSID EAPOL authentication.
270 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
271 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
272 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
275 #endif /* CONFIG_IBSS_RSN */
277 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
278 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
280 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
281 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
282 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
284 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
286 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
287 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
288 eapol_conf.accept_802_1x_keys = 1;
289 eapol_conf.required_keys = 0;
290 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
291 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
293 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
294 eapol_conf.required_keys |=
295 EAPOL_REQUIRE_KEY_BROADCAST;
298 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
299 eapol_conf.required_keys = 0;
302 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
303 eapol_conf.workaround = ssid->eap_workaround;
304 eapol_conf.eap_disabled =
305 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
306 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
307 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
308 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
309 #endif /* IEEE8021X_EAPOL */
314 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
315 * @wpa_s: Pointer to wpa_supplicant data
316 * @ssid: Configuration data for the network
318 * This function is used to configure WPA state machine and related parameters
319 * to a mode where WPA is not enabled. This is called as part of the
320 * authentication configuration when the selected network does not use WPA.
322 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
323 struct wpa_ssid *ssid)
327 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
328 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
329 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
330 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
332 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
333 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
334 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
335 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
336 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
337 wpa_s->group_cipher = WPA_CIPHER_NONE;
338 wpa_s->mgmt_group_cipher = 0;
340 for (i = 0; i < NUM_WEP_KEYS; i++) {
341 if (ssid->wep_key_len[i] > 5) {
342 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
343 wpa_s->group_cipher = WPA_CIPHER_WEP104;
345 } else if (ssid->wep_key_len[i] > 0) {
346 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
347 wpa_s->group_cipher = WPA_CIPHER_WEP40;
352 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
353 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
354 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
355 wpa_s->pairwise_cipher);
356 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
357 #ifdef CONFIG_IEEE80211W
358 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
359 wpa_s->mgmt_group_cipher);
360 #endif /* CONFIG_IEEE80211W */
362 pmksa_cache_clear_current(wpa_s->wpa);
366 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
368 bgscan_deinit(wpa_s);
369 scard_deinit(wpa_s->scard);
371 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
372 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
373 l2_packet_deinit(wpa_s->l2);
376 l2_packet_deinit(wpa_s->l2_br);
380 if (wpa_s->ctrl_iface) {
381 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
382 wpa_s->ctrl_iface = NULL;
384 if (wpa_s->conf != NULL) {
385 struct wpa_ssid *ssid;
386 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
387 wpas_notify_network_removed(wpa_s, ssid);
388 wpa_config_free(wpa_s->conf);
392 os_free(wpa_s->confname);
393 wpa_s->confname = NULL;
395 wpa_sm_set_eapol(wpa_s->wpa, NULL);
396 eapol_sm_deinit(wpa_s->eapol);
399 rsn_preauth_deinit(wpa_s->wpa);
401 pmksa_candidate_free(wpa_s->wpa);
402 wpa_sm_deinit(wpa_s->wpa);
404 wpa_blacklist_clear(wpa_s);
406 wpa_bss_deinit(wpa_s);
408 wpa_supplicant_cancel_scan(wpa_s);
409 wpa_supplicant_cancel_auth_timeout(wpa_s);
411 ieee80211_sta_deinit(wpa_s);
413 wpas_wps_deinit(wpa_s);
415 wpabuf_free(wpa_s->pending_eapol_rx);
416 wpa_s->pending_eapol_rx = NULL;
418 #ifdef CONFIG_IBSS_RSN
419 ibss_rsn_deinit(wpa_s->ibss_rsn);
420 wpa_s->ibss_rsn = NULL;
421 #endif /* CONFIG_IBSS_RSN */
424 os_free(wpa_s->sme.ft_ies);
425 wpa_s->sme.ft_ies = NULL;
426 wpa_s->sme.ft_ies_len = 0;
427 #endif /* CONFIG_SME */
430 wpa_supplicant_ap_deinit(wpa_s);
431 #endif /* CONFIG_AP */
434 wpas_p2p_deinit(wpa_s);
435 #endif /* CONFIG_P2P */
440 * wpa_clear_keys - Clear keys configured for the driver
441 * @wpa_s: Pointer to wpa_supplicant data
442 * @addr: Previously used BSSID or %NULL if not available
444 * This function clears the encryption keys that has been previously configured
447 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
449 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
451 if (wpa_s->keys_cleared) {
452 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
453 * timing issues with keys being cleared just before new keys
454 * are set or just after association or something similar. This
455 * shows up in group key handshake failing often because of the
456 * client not receiving the first encrypted packets correctly.
457 * Skipping some of the extra key clearing steps seems to help
458 * in completing group key handshake more reliably. */
459 wpa_printf(MSG_DEBUG, "No keys have been configured - "
460 "skip key clearing");
464 /* MLME-DELETEKEYS.request */
465 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
466 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
467 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
468 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
469 #ifdef CONFIG_IEEE80211W
470 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 4, 0, NULL, 0, NULL, 0);
471 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 5, 0, NULL, 0, NULL, 0);
472 #endif /* CONFIG_IEEE80211W */
474 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
476 /* MLME-SETPROTECTION.request(None) */
477 wpa_drv_mlme_setprotection(
479 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
480 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
482 wpa_s->keys_cleared = 1;
487 * wpa_supplicant_state_txt - Get the connection state name as a text string
488 * @state: State (wpa_state; WPA_*)
489 * Returns: The state name as a printable text string
491 const char * wpa_supplicant_state_txt(enum wpa_states state)
494 case WPA_DISCONNECTED:
495 return "DISCONNECTED";
498 case WPA_INTERFACE_DISABLED:
499 return "INTERFACE_DISABLED";
502 case WPA_AUTHENTICATING:
503 return "AUTHENTICATING";
504 case WPA_ASSOCIATING:
505 return "ASSOCIATING";
508 case WPA_4WAY_HANDSHAKE:
509 return "4WAY_HANDSHAKE";
510 case WPA_GROUP_HANDSHAKE:
511 return "GROUP_HANDSHAKE";
521 * wpa_supplicant_set_state - Set current connection state
522 * @wpa_s: Pointer to wpa_supplicant data
523 * @state: The new connection state
525 * This function is called whenever the connection state changes, e.g.,
526 * association is completed for WPA/WPA2 4-Way Handshake is started.
528 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
529 enum wpa_states state)
531 enum wpa_states old_state = wpa_s->wpa_state;
533 wpa_printf(MSG_DEBUG, "State: %s -> %s",
534 wpa_supplicant_state_txt(wpa_s->wpa_state),
535 wpa_supplicant_state_txt(state));
537 if (state != WPA_SCANNING)
538 wpa_supplicant_notify_scanning(wpa_s, 0);
540 if (state == WPA_COMPLETED && wpa_s->new_connection) {
541 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
542 struct wpa_ssid *ssid = wpa_s->current_ssid;
543 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
544 MACSTR " completed %s [id=%d id_str=%s]",
545 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
546 "(reauth)" : "(auth)",
547 ssid ? ssid->id : -1,
548 ssid && ssid->id_str ? ssid->id_str : "");
549 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
550 wpa_s->new_connection = 0;
551 wpa_s->reassociated_connection = 1;
552 wpa_drv_set_operstate(wpa_s, 1);
553 wpa_s->after_wps = 0;
555 wpas_p2p_completed(wpa_s);
556 #endif /* CONFIG_P2P */
557 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
558 state == WPA_ASSOCIATED) {
559 wpa_s->new_connection = 1;
560 wpa_drv_set_operstate(wpa_s, 0);
562 wpa_s->wpa_state = state;
564 if (wpa_s->wpa_state != old_state)
565 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
569 void wpa_supplicant_terminate_proc(struct wpa_global *global)
573 struct wpa_supplicant *wpa_s = global->ifaces;
575 if (wpas_wps_terminate_pending(wpa_s) == 1)
579 #endif /* CONFIG_WPS */
586 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
588 struct wpa_global *global = signal_ctx;
589 struct wpa_supplicant *wpa_s;
590 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
591 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
594 wpa_supplicant_terminate_proc(global);
598 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
600 enum wpa_states old_state = wpa_s->wpa_state;
602 wpa_s->pairwise_cipher = 0;
603 wpa_s->group_cipher = 0;
604 wpa_s->mgmt_group_cipher = 0;
606 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
607 wpa_s->wpa_state = WPA_DISCONNECTED;
609 if (wpa_s->wpa_state != old_state)
610 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
615 * wpa_supplicant_reload_configuration - Reload configuration data
616 * @wpa_s: Pointer to wpa_supplicant data
617 * Returns: 0 on success or -1 if configuration parsing failed
619 * This function can be used to request that the configuration data is reloaded
620 * (e.g., after configuration file change). This function is reloading
621 * configuration only for one interface, so this may need to be called multiple
622 * times if %wpa_supplicant is controlling multiple interfaces and all
623 * interfaces need reconfiguration.
625 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
627 struct wpa_config *conf;
628 struct wpa_ssid *old_ssid;
632 if (wpa_s->confname == NULL)
634 conf = wpa_config_read(wpa_s->confname);
636 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
637 "file '%s' - exiting", wpa_s->confname);
640 conf->changed_parameters = (unsigned int) -1;
642 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
643 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
644 os_strcmp(conf->ctrl_interface,
645 wpa_s->conf->ctrl_interface) != 0);
647 if (reconf_ctrl && wpa_s->ctrl_iface) {
648 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
649 wpa_s->ctrl_iface = NULL;
652 eapol_sm_invalidate_cached_session(wpa_s->eapol);
653 old_ssid = wpa_s->current_ssid;
654 wpa_s->current_ssid = NULL;
655 if (old_ssid != wpa_s->current_ssid)
656 wpas_notify_network_changed(wpa_s);
659 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
660 * pkcs11_engine_path, pkcs11_module_path.
662 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
664 * Clear forced success to clear EAP state for next
667 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
669 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
670 wpa_sm_set_config(wpa_s->wpa, NULL);
671 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
672 rsn_preauth_deinit(wpa_s->wpa);
674 old_ap_scan = wpa_s->conf->ap_scan;
675 wpa_config_free(wpa_s->conf);
677 if (old_ap_scan != wpa_s->conf->ap_scan)
678 wpas_notify_ap_scan_changed(wpa_s);
681 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
683 wpa_supplicant_update_config(wpa_s);
685 wpa_supplicant_clear_status(wpa_s);
686 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
687 wpa_s->reassociate = 1;
688 wpa_supplicant_req_scan(wpa_s, 0, 0);
690 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
695 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
697 struct wpa_global *global = signal_ctx;
698 struct wpa_supplicant *wpa_s;
699 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
700 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
701 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
702 wpa_supplicant_terminate_proc(global);
708 enum wpa_cipher cipher_suite2driver(int cipher)
711 case WPA_CIPHER_NONE:
713 case WPA_CIPHER_WEP40:
715 case WPA_CIPHER_WEP104:
716 return CIPHER_WEP104;
717 case WPA_CIPHER_CCMP:
719 case WPA_CIPHER_TKIP:
726 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
729 case WPA_KEY_MGMT_NONE:
730 return KEY_MGMT_NONE;
731 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
732 return KEY_MGMT_802_1X_NO_WPA;
733 case WPA_KEY_MGMT_IEEE8021X:
734 return KEY_MGMT_802_1X;
735 case WPA_KEY_MGMT_WPA_NONE:
736 return KEY_MGMT_WPA_NONE;
737 case WPA_KEY_MGMT_FT_IEEE8021X:
738 return KEY_MGMT_FT_802_1X;
739 case WPA_KEY_MGMT_FT_PSK:
740 return KEY_MGMT_FT_PSK;
741 case WPA_KEY_MGMT_IEEE8021X_SHA256:
742 return KEY_MGMT_802_1X_SHA256;
743 case WPA_KEY_MGMT_PSK_SHA256:
744 return KEY_MGMT_PSK_SHA256;
745 case WPA_KEY_MGMT_WPS:
747 case WPA_KEY_MGMT_PSK:
754 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
755 struct wpa_ssid *ssid,
756 struct wpa_ie_data *ie)
758 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
761 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
762 "from association info");
767 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
769 if (!(ie->group_cipher & ssid->group_cipher)) {
770 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
771 "cipher 0x%x (mask 0x%x) - reject",
772 ie->group_cipher, ssid->group_cipher);
775 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
776 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
777 "cipher 0x%x (mask 0x%x) - reject",
778 ie->pairwise_cipher, ssid->pairwise_cipher);
781 if (!(ie->key_mgmt & ssid->key_mgmt)) {
782 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
783 "management 0x%x (mask 0x%x) - reject",
784 ie->key_mgmt, ssid->key_mgmt);
788 #ifdef CONFIG_IEEE80211W
789 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
790 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
791 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
792 "that does not support management frame protection - "
796 #endif /* CONFIG_IEEE80211W */
803 * wpa_supplicant_set_suites - Set authentication and encryption parameters
804 * @wpa_s: Pointer to wpa_supplicant data
805 * @bss: Scan results for the selected BSS, or %NULL if not available
806 * @ssid: Configuration data for the selected network
807 * @wpa_ie: Buffer for the WPA/RSN IE
808 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
809 * used buffer length in case the functions returns success.
810 * Returns: 0 on success or -1 on failure
812 * This function is used to configure authentication and encryption parameters
813 * based on the network configuration and scan result for the selected BSS (if
816 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
817 struct wpa_bss *bss, struct wpa_ssid *ssid,
818 u8 *wpa_ie, size_t *wpa_ie_len)
820 struct wpa_ie_data ie;
822 const u8 *bss_wpa, *bss_rsn;
825 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
826 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
828 bss_wpa = bss_rsn = NULL;
830 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
831 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
832 (ie.group_cipher & ssid->group_cipher) &&
833 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
834 (ie.key_mgmt & ssid->key_mgmt)) {
835 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
836 proto = WPA_PROTO_RSN;
837 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
838 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
839 (ie.group_cipher & ssid->group_cipher) &&
840 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
841 (ie.key_mgmt & ssid->key_mgmt)) {
842 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
843 proto = WPA_PROTO_WPA;
845 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
848 if (ssid->proto & WPA_PROTO_RSN)
849 proto = WPA_PROTO_RSN;
851 proto = WPA_PROTO_WPA;
852 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
853 os_memset(&ie, 0, sizeof(ie));
854 ie.group_cipher = ssid->group_cipher;
855 ie.pairwise_cipher = ssid->pairwise_cipher;
856 ie.key_mgmt = ssid->key_mgmt;
857 #ifdef CONFIG_IEEE80211W
858 ie.mgmt_group_cipher =
859 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
860 WPA_CIPHER_AES_128_CMAC : 0;
861 #endif /* CONFIG_IEEE80211W */
862 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
868 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
869 "pairwise %d key_mgmt %d proto %d",
870 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
871 #ifdef CONFIG_IEEE80211W
872 if (ssid->ieee80211w) {
873 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
874 ie.mgmt_group_cipher);
876 #endif /* CONFIG_IEEE80211W */
878 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
879 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
880 !!(ssid->proto & WPA_PROTO_RSN));
882 if (bss || !wpa_s->ap_ies_from_associnfo) {
883 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
884 bss_wpa ? 2 + bss_wpa[1] : 0) ||
885 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
886 bss_rsn ? 2 + bss_rsn[1] : 0))
890 sel = ie.group_cipher & ssid->group_cipher;
891 if (sel & WPA_CIPHER_CCMP) {
892 wpa_s->group_cipher = WPA_CIPHER_CCMP;
893 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
894 } else if (sel & WPA_CIPHER_TKIP) {
895 wpa_s->group_cipher = WPA_CIPHER_TKIP;
896 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
897 } else if (sel & WPA_CIPHER_WEP104) {
898 wpa_s->group_cipher = WPA_CIPHER_WEP104;
899 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
900 } else if (sel & WPA_CIPHER_WEP40) {
901 wpa_s->group_cipher = WPA_CIPHER_WEP40;
902 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
904 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
908 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
909 if (sel & WPA_CIPHER_CCMP) {
910 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
911 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
912 } else if (sel & WPA_CIPHER_TKIP) {
913 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
914 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
915 } else if (sel & WPA_CIPHER_NONE) {
916 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
917 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
919 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
924 sel = ie.key_mgmt & ssid->key_mgmt;
926 #ifdef CONFIG_IEEE80211R
927 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
928 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
929 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
930 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
931 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
932 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
933 #endif /* CONFIG_IEEE80211R */
934 #ifdef CONFIG_IEEE80211W
935 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
936 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
937 wpa_msg(wpa_s, MSG_DEBUG,
938 "WPA: using KEY_MGMT 802.1X with SHA256");
939 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
940 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
941 wpa_msg(wpa_s, MSG_DEBUG,
942 "WPA: using KEY_MGMT PSK with SHA256");
943 #endif /* CONFIG_IEEE80211W */
944 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
945 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
946 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
947 } else if (sel & WPA_KEY_MGMT_PSK) {
948 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
949 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
950 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
951 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
952 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
954 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
955 "key management type.");
959 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
960 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
961 wpa_s->pairwise_cipher);
962 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
964 #ifdef CONFIG_IEEE80211W
965 sel = ie.mgmt_group_cipher;
966 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
967 !(ie.capabilities & WPA_CAPABILITY_MFPC))
969 if (sel & WPA_CIPHER_AES_128_CMAC) {
970 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
971 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
974 wpa_s->mgmt_group_cipher = 0;
975 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
977 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
978 wpa_s->mgmt_group_cipher);
979 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
980 #endif /* CONFIG_IEEE80211W */
982 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
983 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
988 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
989 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
991 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
998 * wpa_supplicant_associate - Request association
999 * @wpa_s: Pointer to wpa_supplicant data
1000 * @bss: Scan results for the selected BSS, or %NULL if not available
1001 * @ssid: Configuration data for the selected network
1003 * This function is used to request %wpa_supplicant to associate with a BSS.
1005 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
1006 struct wpa_bss *bss, struct wpa_ssid *ssid)
1010 int use_crypt, ret, i, bssid_changed;
1011 int algs = WPA_AUTH_ALG_OPEN;
1012 enum wpa_cipher cipher_pairwise, cipher_group;
1013 struct wpa_driver_associate_params params;
1014 int wep_keys_set = 0;
1015 struct wpa_driver_capa capa;
1016 int assoc_failed = 0;
1017 struct wpa_ssid *old_ssid;
1019 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1020 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1022 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1023 wpa_printf(MSG_INFO, "Driver does not support AP "
1027 wpa_supplicant_create_ap(wpa_s, ssid);
1028 wpa_s->current_bss = bss;
1029 #else /* CONFIG_AP */
1030 wpa_printf(MSG_ERROR, "AP mode support not included in the "
1032 #endif /* CONFIG_AP */
1036 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1037 ssid->mode == IEEE80211_MODE_INFRA) {
1038 sme_authenticate(wpa_s, bss, ssid);
1042 os_memset(¶ms, 0, sizeof(params));
1043 wpa_s->reassociate = 0;
1045 #ifdef CONFIG_IEEE80211R
1046 const u8 *ie, *md = NULL;
1047 #endif /* CONFIG_IEEE80211R */
1048 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1049 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1050 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
1051 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1052 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1053 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1055 wpas_notify_bssid_changed(wpa_s);
1056 #ifdef CONFIG_IEEE80211R
1057 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1058 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1060 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
1062 /* Prepare for the next transition */
1063 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
1065 #endif /* CONFIG_IEEE80211R */
1067 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1068 wpa_s->conf->ap_scan == 2 &&
1069 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1070 /* Use ap_scan==1 style network selection to find the network
1072 wpa_s->scan_req = 2;
1073 wpa_s->reassociate = 1;
1074 wpa_supplicant_req_scan(wpa_s, 0, 0);
1076 #endif /* CONFIG_WPS */
1078 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1079 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1080 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1082 wpa_supplicant_cancel_scan(wpa_s);
1084 /* Starting new association, so clear the possibly used WPA IE from the
1085 * previous association. */
1086 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1088 #ifdef IEEE8021X_EAPOL
1089 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1091 if (ssid->non_leap == 0)
1092 algs = WPA_AUTH_ALG_LEAP;
1094 algs |= WPA_AUTH_ALG_LEAP;
1097 #endif /* IEEE8021X_EAPOL */
1098 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1099 if (ssid->auth_alg) {
1100 algs = ssid->auth_alg;
1101 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1105 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1106 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
1107 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1108 WPA_KEY_MGMT_FT_IEEE8021X |
1109 WPA_KEY_MGMT_FT_PSK |
1110 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1111 WPA_KEY_MGMT_PSK_SHA256))) {
1112 int try_opportunistic;
1113 try_opportunistic = ssid->proactive_key_caching &&
1114 (ssid->proto & WPA_PROTO_RSN);
1115 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1116 wpa_s->current_ssid,
1117 try_opportunistic) == 0)
1118 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1119 wpa_ie_len = sizeof(wpa_ie);
1120 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1121 wpa_ie, &wpa_ie_len)) {
1122 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1123 "management and encryption suites");
1126 } else if (ssid->key_mgmt &
1127 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1128 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1129 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1130 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1131 wpa_ie_len = sizeof(wpa_ie);
1132 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1133 wpa_ie, &wpa_ie_len)) {
1134 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1135 "management and encryption suites (no scan "
1140 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1141 struct wpabuf *wps_ie;
1142 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1143 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1144 wpa_ie_len = wpabuf_len(wps_ie);
1145 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1148 wpabuf_free(wps_ie);
1149 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1150 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1151 params.wps = WPS_MODE_PRIVACY;
1153 params.wps = WPS_MODE_OPEN;
1154 #endif /* CONFIG_WPS */
1156 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1161 if (wpa_s->global->p2p) {
1166 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
1167 pos = wpa_ie + wpa_ie_len;
1168 len = sizeof(wpa_ie) - wpa_ie_len;
1169 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
1174 wpa_s->cross_connect_disallowed = 0;
1177 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1179 wpa_s->cross_connect_disallowed =
1180 p2p_get_cross_connect_disallowed(p2p);
1182 wpa_printf(MSG_DEBUG, "P2P: WLAN AP %s cross "
1184 wpa_s->cross_connect_disallowed ?
1185 "disallows" : "allows");
1188 #endif /* CONFIG_P2P */
1190 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1192 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1193 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1194 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1195 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1196 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1198 if (wpa_set_wep_keys(wpa_s, ssid)) {
1203 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1206 #ifdef IEEE8021X_EAPOL
1207 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1208 if ((ssid->eapol_flags &
1209 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1210 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1214 /* Assume that dynamic WEP-104 keys will be used and
1215 * set cipher suites in order for drivers to expect
1217 cipher_pairwise = cipher_group = CIPHER_WEP104;
1220 #endif /* IEEE8021X_EAPOL */
1222 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1223 /* Set the key before (and later after) association */
1224 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1227 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1229 params.bssid = bss->bssid;
1230 params.ssid = bss->ssid;
1231 params.ssid_len = bss->ssid_len;
1232 params.freq = bss->freq;
1234 params.ssid = ssid->ssid;
1235 params.ssid_len = ssid->ssid_len;
1237 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1239 params.freq = ssid->frequency; /* Initial channel for IBSS */
1240 params.wpa_ie = wpa_ie;
1241 params.wpa_ie_len = wpa_ie_len;
1242 params.pairwise_suite = cipher_pairwise;
1243 params.group_suite = cipher_group;
1244 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1245 params.auth_alg = algs;
1246 params.mode = ssid->mode;
1247 for (i = 0; i < NUM_WEP_KEYS; i++) {
1248 if (ssid->wep_key_len[i])
1249 params.wep_key[i] = ssid->wep_key[i];
1250 params.wep_key_len[i] = ssid->wep_key_len[i];
1252 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1254 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1255 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1256 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1257 params.passphrase = ssid->passphrase;
1259 params.psk = ssid->psk;
1262 params.drop_unencrypted = use_crypt;
1264 #ifdef CONFIG_IEEE80211W
1265 params.mgmt_frame_protection = ssid->ieee80211w;
1266 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
1267 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1268 struct wpa_ie_data ie;
1269 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1271 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1272 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1274 params.mgmt_frame_protection =
1275 MGMT_FRAME_PROTECTION_REQUIRED;
1278 #endif /* CONFIG_IEEE80211W */
1281 if (wpa_s->global->p2p &&
1282 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
1284 #endif /* CONFIG_P2P */
1286 if (wpa_s->parent->set_sta_uapsd)
1287 params.uapsd = wpa_s->parent->sta_uapsd;
1291 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1292 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1294 ret = wpa_drv_associate(wpa_s, ¶ms);
1296 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1298 /* try to continue anyway; new association will be tried again
1303 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1304 /* Set the key after the association just in case association
1305 * cleared the previously configured key. */
1306 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1307 /* No need to timeout authentication since there is no key
1309 wpa_supplicant_cancel_auth_timeout(wpa_s);
1310 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1311 #ifdef CONFIG_IBSS_RSN
1312 } else if (ssid->mode == WPAS_MODE_IBSS &&
1313 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1314 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1315 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1317 * RSN IBSS authentication is per-STA and we can disable the
1318 * per-BSSID authentication.
1320 wpa_supplicant_cancel_auth_timeout(wpa_s);
1321 #endif /* CONFIG_IBSS_RSN */
1323 /* Timeout for IEEE 802.11 authentication and association */
1327 /* give IBSS a bit more time */
1328 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1329 } else if (wpa_s->conf->ap_scan == 1) {
1330 /* give IBSS a bit more time */
1331 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1333 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1336 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1337 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1338 /* Set static WEP keys again */
1339 wpa_set_wep_keys(wpa_s, ssid);
1342 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1344 * Do not allow EAP session resumption between different
1345 * network configurations.
1347 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1349 old_ssid = wpa_s->current_ssid;
1350 wpa_s->current_ssid = ssid;
1351 wpa_s->current_bss = bss;
1352 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1353 wpa_supplicant_initiate_eapol(wpa_s);
1354 if (old_ssid != wpa_s->current_ssid)
1355 wpas_notify_network_changed(wpa_s);
1359 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1362 struct wpa_ssid *old_ssid;
1364 wpa_clear_keys(wpa_s, addr);
1365 wpa_supplicant_mark_disassoc(wpa_s);
1366 old_ssid = wpa_s->current_ssid;
1367 wpa_s->current_ssid = NULL;
1368 wpa_s->current_bss = NULL;
1369 wpa_sm_set_config(wpa_s->wpa, NULL);
1370 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1371 if (old_ssid != wpa_s->current_ssid)
1372 wpas_notify_network_changed(wpa_s);
1373 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1378 * wpa_supplicant_disassociate - Disassociate the current connection
1379 * @wpa_s: Pointer to wpa_supplicant data
1380 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1382 * This function is used to request %wpa_supplicant to disassociate with the
1385 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1390 if (!is_zero_ether_addr(wpa_s->bssid)) {
1391 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1392 ieee80211_sta_disassociate(wpa_s, reason_code);
1394 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1395 addr = wpa_s->bssid;
1398 wpa_supplicant_clear_connection(wpa_s, addr);
1403 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1404 * @wpa_s: Pointer to wpa_supplicant data
1405 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1407 * This function is used to request %wpa_supplicant to deauthenticate from the
1410 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1415 if (!is_zero_ether_addr(wpa_s->bssid)) {
1416 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1417 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1419 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1421 addr = wpa_s->bssid;
1424 wpa_supplicant_clear_connection(wpa_s, addr);
1429 * wpa_supplicant_enable_network - Mark a configured network as enabled
1430 * @wpa_s: wpa_supplicant structure for a network interface
1431 * @ssid: wpa_ssid structure for a configured network or %NULL
1433 * Enables the specified network or all networks if no network specified.
1435 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1436 struct wpa_ssid *ssid)
1438 struct wpa_ssid *other_ssid;
1442 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1443 other_ssid = other_ssid->next) {
1444 if (other_ssid->disabled == 2)
1445 continue; /* do not change persistent P2P group
1447 if (other_ssid == wpa_s->current_ssid &&
1448 other_ssid->disabled)
1449 wpa_s->reassociate = 1;
1451 was_disabled = other_ssid->disabled;
1453 other_ssid->disabled = 0;
1455 if (was_disabled != other_ssid->disabled)
1456 wpas_notify_network_enabled_changed(
1459 if (wpa_s->reassociate)
1460 wpa_supplicant_req_scan(wpa_s, 0, 0);
1461 } else if (ssid->disabled && ssid->disabled != 2) {
1462 if (wpa_s->current_ssid == NULL) {
1464 * Try to reassociate since there is no current
1465 * configuration and a new network was made available.
1467 wpa_s->reassociate = 1;
1468 wpa_supplicant_req_scan(wpa_s, 0, 0);
1471 was_disabled = ssid->disabled;
1475 if (was_disabled != ssid->disabled)
1476 wpas_notify_network_enabled_changed(wpa_s, ssid);
1482 * wpa_supplicant_disable_network - Mark a configured network as disabled
1483 * @wpa_s: wpa_supplicant structure for a network interface
1484 * @ssid: wpa_ssid structure for a configured network or %NULL
1486 * Disables the specified network or all networks if no network specified.
1488 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1489 struct wpa_ssid *ssid)
1491 struct wpa_ssid *other_ssid;
1495 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1496 other_ssid = other_ssid->next) {
1497 was_disabled = other_ssid->disabled;
1498 if (was_disabled == 2)
1499 continue; /* do not change persistent P2P group
1502 other_ssid->disabled = 1;
1504 if (was_disabled != other_ssid->disabled)
1505 wpas_notify_network_enabled_changed(
1508 if (wpa_s->current_ssid)
1509 wpa_supplicant_disassociate(
1510 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1511 } else if (ssid->disabled != 2) {
1512 if (ssid == wpa_s->current_ssid)
1513 wpa_supplicant_disassociate(
1514 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1516 was_disabled = ssid->disabled;
1520 if (was_disabled != ssid->disabled)
1521 wpas_notify_network_enabled_changed(wpa_s, ssid);
1527 * wpa_supplicant_select_network - Attempt association with a network
1528 * @wpa_s: wpa_supplicant structure for a network interface
1529 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1531 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1532 struct wpa_ssid *ssid)
1535 struct wpa_ssid *other_ssid;
1537 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1538 wpa_supplicant_disassociate(
1539 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1542 * Mark all other networks disabled or mark all networks enabled if no
1543 * network specified.
1545 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1546 other_ssid = other_ssid->next) {
1547 int was_disabled = other_ssid->disabled;
1548 if (was_disabled == 2)
1549 continue; /* do not change persistent P2P group data */
1551 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1553 if (was_disabled != other_ssid->disabled)
1554 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1556 wpa_s->disconnected = 0;
1557 wpa_s->reassociate = 1;
1558 wpa_supplicant_req_scan(wpa_s, 0, 0);
1561 wpas_notify_network_selected(wpa_s, ssid);
1566 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1567 * @wpa_s: wpa_supplicant structure for a network interface
1568 * @ap_scan: AP scan mode
1569 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1572 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1577 if (ap_scan < 0 || ap_scan > 2)
1580 old_ap_scan = wpa_s->conf->ap_scan;
1581 wpa_s->conf->ap_scan = ap_scan;
1583 if (old_ap_scan != wpa_s->conf->ap_scan)
1584 wpas_notify_ap_scan_changed(wpa_s);
1591 * wpa_supplicant_set_debug_params - Set global debug params
1592 * @global: wpa_global structure
1593 * @debug_level: debug level
1594 * @debug_timestamp: determines if show timestamp in debug data
1595 * @debug_show_keys: determines if show keys in debug data
1596 * Returns: 0 if succeed or -1 if debug_level has wrong value
1598 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1599 int debug_timestamp, int debug_show_keys)
1602 int old_level, old_timestamp, old_show_keys;
1604 /* check for allowed debuglevels */
1605 if (debug_level != MSG_MSGDUMP &&
1606 debug_level != MSG_DEBUG &&
1607 debug_level != MSG_INFO &&
1608 debug_level != MSG_WARNING &&
1609 debug_level != MSG_ERROR)
1612 old_level = wpa_debug_level;
1613 old_timestamp = wpa_debug_timestamp;
1614 old_show_keys = wpa_debug_show_keys;
1616 wpa_debug_level = debug_level;
1617 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1618 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1620 if (wpa_debug_level != old_level)
1621 wpas_notify_debug_level_changed(global);
1622 if (wpa_debug_timestamp != old_timestamp)
1623 wpas_notify_debug_timestamp_changed(global);
1624 if (wpa_debug_show_keys != old_show_keys)
1625 wpas_notify_debug_show_keys_changed(global);
1632 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1633 * @wpa_s: Pointer to wpa_supplicant data
1634 * Returns: A pointer to the current network structure or %NULL on failure
1636 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1638 struct wpa_ssid *entry;
1639 u8 ssid[MAX_SSID_LEN];
1645 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1646 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1647 wpa_printf(MSG_WARNING, "Could not read SSID from "
1652 res = wpa_drv_get_ssid(wpa_s, ssid);
1654 wpa_printf(MSG_WARNING, "Could not read SSID from "
1661 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1662 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1663 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1664 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1668 wired = wpa_s->conf->ap_scan == 0 &&
1669 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1671 entry = wpa_s->conf->ssid;
1673 if (!entry->disabled &&
1674 ((ssid_len == entry->ssid_len &&
1675 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1676 (!entry->bssid_set ||
1677 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1680 if (!entry->disabled &&
1681 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1682 (entry->ssid == NULL || entry->ssid_len == 0) &&
1683 (!entry->bssid_set ||
1684 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1686 #endif /* CONFIG_WPS */
1687 entry = entry->next;
1694 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1704 if (wpa_drivers[0] == NULL) {
1705 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1711 /* default to first driver in the list */
1712 wpa_s->driver = wpa_drivers[0];
1713 wpa_s->global_drv_priv = wpa_s->global->drv_priv[0];
1717 pos = os_strchr(name, ',');
1721 len = os_strlen(name);
1722 for (i = 0; wpa_drivers[i]; i++) {
1723 if (os_strlen(wpa_drivers[i]->name) == len &&
1724 os_strncmp(name, wpa_drivers[i]->name, len) ==
1726 wpa_s->driver = wpa_drivers[i];
1727 wpa_s->global_drv_priv = wpa_s->global->drv_priv[i];
1732 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1738 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1739 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1740 * with struct wpa_driver_ops::init()
1741 * @src_addr: Source address of the EAPOL frame
1742 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1743 * @len: Length of the EAPOL data
1745 * This function is called for each received EAPOL frame. Most driver
1746 * interfaces rely on more generic OS mechanism for receiving frames through
1747 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1748 * take care of received EAPOL frames and deliver them to the core supplicant
1749 * code by calling this function.
1751 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1752 const u8 *buf, size_t len)
1754 struct wpa_supplicant *wpa_s = ctx;
1756 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1757 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1759 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1761 * There is possible race condition between receiving the
1762 * association event and the EAPOL frame since they are coming
1763 * through different paths from the driver. In order to avoid
1764 * issues in trying to process the EAPOL frame before receiving
1765 * association information, lets queue it for processing until
1766 * the association event is received.
1768 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of "
1769 "received EAPOL frame");
1770 wpabuf_free(wpa_s->pending_eapol_rx);
1771 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1772 if (wpa_s->pending_eapol_rx) {
1773 os_get_time(&wpa_s->pending_eapol_rx_time);
1774 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1781 if (wpa_s->ap_iface) {
1782 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1785 #endif /* CONFIG_AP */
1787 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1788 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1789 "no key management is configured");
1793 if (wpa_s->eapol_received == 0 &&
1794 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1795 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1796 wpa_s->wpa_state != WPA_COMPLETED) &&
1797 (wpa_s->current_ssid == NULL ||
1798 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
1799 /* Timeout for completing IEEE 802.1X and WPA authentication */
1800 wpa_supplicant_req_auth_timeout(
1802 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1803 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1804 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1807 wpa_s->eapol_received++;
1809 if (wpa_s->countermeasures) {
1810 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1815 #ifdef CONFIG_IBSS_RSN
1816 if (wpa_s->current_ssid &&
1817 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
1818 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1821 #endif /* CONFIG_IBSS_RSN */
1823 /* Source address of the incoming EAPOL frame could be compared to the
1824 * current BSSID. However, it is possible that a centralized
1825 * Authenticator could be using another MAC address than the BSSID of
1826 * an AP, so just allow any address to be used for now. The replies are
1827 * still sent to the current BSSID (if available), though. */
1829 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1830 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1831 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1833 wpa_drv_poll(wpa_s);
1834 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1835 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1836 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1838 * Set portValid = TRUE here since we are going to skip 4-way
1839 * handshake processing which would normally set portValid. We
1840 * need this to allow the EAPOL state machines to be completed
1841 * without going through EAPOL-Key handshake.
1843 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1849 * wpa_supplicant_driver_init - Initialize driver interface parameters
1850 * @wpa_s: Pointer to wpa_supplicant data
1851 * Returns: 0 on success, -1 on failure
1853 * This function is called to initialize driver interface parameters.
1854 * wpa_drv_init() must have been called before this function to initialize the
1857 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1859 static int interface_count = 0;
1861 if (wpa_s->driver->send_eapol) {
1862 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1864 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1865 } else if (!(wpa_s->drv_flags &
1866 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
1867 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1868 wpa_drv_get_mac_addr(wpa_s),
1870 wpa_supplicant_rx_eapol, wpa_s, 0);
1871 if (wpa_s->l2 == NULL)
1874 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1876 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1879 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1880 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1884 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1885 MAC2STR(wpa_s->own_addr));
1887 if (wpa_s->bridge_ifname[0]) {
1888 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1889 " '%s'", wpa_s->bridge_ifname);
1890 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1893 wpa_supplicant_rx_eapol, wpa_s,
1895 if (wpa_s->l2_br == NULL) {
1896 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1897 "connection for the bridge interface '%s'",
1898 wpa_s->bridge_ifname);
1903 wpa_clear_keys(wpa_s, NULL);
1905 /* Make sure that TKIP countermeasures are not left enabled (could
1906 * happen if wpa_supplicant is killed during countermeasures. */
1907 wpa_drv_set_countermeasures(wpa_s, 0);
1909 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1910 wpa_drv_flush_pmkid(wpa_s);
1912 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1913 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
1914 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1917 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1923 static int wpa_supplicant_daemon(const char *pid_file)
1925 wpa_printf(MSG_DEBUG, "Daemonize..");
1926 return os_daemonize(pid_file);
1930 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1932 struct wpa_supplicant *wpa_s;
1934 wpa_s = os_zalloc(sizeof(*wpa_s));
1937 wpa_s->scan_req = 1;
1938 wpa_s->new_connection = 1;
1939 wpa_s->parent = wpa_s;
1945 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1946 struct wpa_interface *iface)
1948 const char *ifname, *driver;
1949 struct wpa_driver_capa capa;
1951 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1952 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1953 iface->confname ? iface->confname : "N/A",
1954 iface->driver ? iface->driver : "default",
1955 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1956 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1958 if (iface->confname) {
1959 #ifdef CONFIG_BACKEND_FILE
1960 wpa_s->confname = os_rel2abs_path(iface->confname);
1961 if (wpa_s->confname == NULL) {
1962 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1963 "for configuration file '%s'.",
1967 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1968 iface->confname, wpa_s->confname);
1969 #else /* CONFIG_BACKEND_FILE */
1970 wpa_s->confname = os_strdup(iface->confname);
1971 #endif /* CONFIG_BACKEND_FILE */
1972 wpa_s->conf = wpa_config_read(wpa_s->confname);
1973 if (wpa_s->conf == NULL) {
1974 wpa_printf(MSG_ERROR, "Failed to read or parse "
1975 "configuration '%s'.", wpa_s->confname);
1980 * Override ctrl_interface and driver_param if set on command
1983 if (iface->ctrl_interface) {
1984 os_free(wpa_s->conf->ctrl_interface);
1985 wpa_s->conf->ctrl_interface =
1986 os_strdup(iface->ctrl_interface);
1989 if (iface->driver_param) {
1990 os_free(wpa_s->conf->driver_param);
1991 wpa_s->conf->driver_param =
1992 os_strdup(iface->driver_param);
1995 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1996 iface->driver_param);
1998 if (wpa_s->conf == NULL) {
1999 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2003 if (iface->ifname == NULL) {
2004 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2007 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2008 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2012 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2014 if (iface->bridge_ifname) {
2015 if (os_strlen(iface->bridge_ifname) >=
2016 sizeof(wpa_s->bridge_ifname)) {
2017 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2018 "name '%s'.", iface->bridge_ifname);
2021 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2022 sizeof(wpa_s->bridge_ifname));
2025 /* RSNA Supplicant Key Management - INITIALIZE */
2026 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2027 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2029 /* Initialize driver interface and register driver event handler before
2030 * L2 receive handler so that association events are processed before
2031 * EAPOL-Key packets if both become available for the same select()
2033 driver = iface->driver;
2035 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2038 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2039 if (wpa_s->drv_priv == NULL) {
2041 pos = driver ? os_strchr(driver, ',') : NULL;
2043 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
2044 "interface - try next driver wrapper");
2048 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
2051 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2052 wpa_printf(MSG_ERROR, "Driver interface rejected "
2053 "driver_param '%s'", wpa_s->conf->driver_param);
2057 ifname = wpa_drv_get_ifname(wpa_s);
2058 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2059 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
2060 "name with '%s'", ifname);
2061 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2064 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2067 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2068 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2070 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2072 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2073 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2074 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2075 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2076 "dot11RSNAConfigPMKLifetime");
2080 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2081 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2082 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2083 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2084 "dot11RSNAConfigPMKReauthThreshold");
2088 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2089 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2090 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2091 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2092 "dot11RSNAConfigSATimeout");
2096 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2097 wpa_s->drv_flags = capa.flags;
2098 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2099 if (ieee80211_sta_init(wpa_s))
2102 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2103 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
2104 wpa_s->max_stations = capa.max_stations;
2106 if (wpa_s->max_remain_on_chan == 0)
2107 wpa_s->max_remain_on_chan = 1000;
2109 if (wpa_supplicant_driver_init(wpa_s) < 0)
2112 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2113 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2114 wpa_printf(MSG_DEBUG, "Failed to set country");
2118 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2120 if (wpas_wps_init(wpa_s))
2123 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2125 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2127 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2128 if (wpa_s->ctrl_iface == NULL) {
2129 wpa_printf(MSG_ERROR,
2130 "Failed to initialize control interface '%s'.\n"
2131 "You may have another wpa_supplicant process "
2132 "already running or the file was\n"
2133 "left by an unclean termination of wpa_supplicant "
2134 "in which case you will need\n"
2135 "to manually remove this file before starting "
2136 "wpa_supplicant again.\n",
2137 wpa_s->conf->ctrl_interface);
2141 #ifdef CONFIG_IBSS_RSN
2142 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2143 if (!wpa_s->ibss_rsn) {
2144 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
2147 #endif /* CONFIG_IBSS_RSN */
2150 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
2151 wpa_printf(MSG_ERROR, "Failed to init P2P");
2154 #endif /* CONFIG_P2P */
2156 if (wpa_bss_init(wpa_s) < 0)
2163 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2166 if (wpa_s->drv_priv) {
2167 wpa_supplicant_deauthenticate(wpa_s,
2168 WLAN_REASON_DEAUTH_LEAVING);
2170 wpa_drv_set_countermeasures(wpa_s, 0);
2171 wpa_clear_keys(wpa_s, NULL);
2174 wpa_supplicant_cleanup(wpa_s);
2177 wpas_notify_iface_removed(wpa_s);
2179 if (wpa_s->drv_priv)
2180 wpa_drv_deinit(wpa_s);
2185 * wpa_supplicant_add_iface - Add a new network interface
2186 * @global: Pointer to global data from wpa_supplicant_init()
2187 * @iface: Interface configuration options
2188 * Returns: Pointer to the created interface or %NULL on failure
2190 * This function is used to add new network interfaces for %wpa_supplicant.
2191 * This can be called before wpa_supplicant_run() to add interfaces before the
2192 * main event loop has been started. In addition, new interfaces can be added
2193 * dynamically while %wpa_supplicant is already running. This could happen,
2194 * e.g., when a hotplug network adapter is inserted.
2196 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2197 struct wpa_interface *iface)
2199 struct wpa_supplicant *wpa_s;
2200 struct wpa_interface t_iface;
2201 struct wpa_ssid *ssid;
2203 if (global == NULL || iface == NULL)
2206 wpa_s = wpa_supplicant_alloc();
2210 wpa_s->global = global;
2213 if (global->params.override_driver) {
2214 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2216 iface->driver, global->params.override_driver);
2217 t_iface.driver = global->params.override_driver;
2219 if (global->params.override_ctrl_interface) {
2220 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2221 "ctrl_interface ('%s' -> '%s')",
2222 iface->ctrl_interface,
2223 global->params.override_ctrl_interface);
2224 t_iface.ctrl_interface =
2225 global->params.override_ctrl_interface;
2227 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2228 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2230 wpa_supplicant_deinit_iface(wpa_s, 0);
2235 /* Notify the control interfaces about new iface */
2236 if (wpas_notify_iface_added(wpa_s)) {
2237 wpa_supplicant_deinit_iface(wpa_s, 1);
2242 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2243 wpas_notify_network_added(wpa_s, ssid);
2245 wpa_s->next = global->ifaces;
2246 global->ifaces = wpa_s;
2248 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2255 * wpa_supplicant_remove_iface - Remove a network interface
2256 * @global: Pointer to global data from wpa_supplicant_init()
2257 * @wpa_s: Pointer to the network interface to be removed
2258 * Returns: 0 if interface was removed, -1 if interface was not found
2260 * This function can be used to dynamically remove network interfaces from
2261 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2262 * addition, this function is used to remove all remaining interfaces when
2263 * %wpa_supplicant is terminated.
2265 int wpa_supplicant_remove_iface(struct wpa_global *global,
2266 struct wpa_supplicant *wpa_s)
2268 struct wpa_supplicant *prev;
2270 /* Remove interface from the global list of interfaces */
2271 prev = global->ifaces;
2272 if (prev == wpa_s) {
2273 global->ifaces = wpa_s->next;
2275 while (prev && prev->next != wpa_s)
2279 prev->next = wpa_s->next;
2282 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2284 if (global->p2p_group_formation == wpa_s)
2285 global->p2p_group_formation = NULL;
2286 wpa_supplicant_deinit_iface(wpa_s, 1);
2294 * wpa_supplicant_get_iface - Get a new network interface
2295 * @global: Pointer to global data from wpa_supplicant_init()
2296 * @ifname: Interface name
2297 * Returns: Pointer to the interface or %NULL if not found
2299 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2302 struct wpa_supplicant *wpa_s;
2304 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2305 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2313 * wpa_supplicant_init - Initialize %wpa_supplicant
2314 * @params: Parameters for %wpa_supplicant
2315 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2317 * This function is used to initialize %wpa_supplicant. After successful
2318 * initialization, the returned data pointer can be used to add and remove
2319 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2321 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2323 struct wpa_global *global;
2329 wpa_debug_open_file(params->wpa_debug_file_path);
2330 if (params->wpa_debug_syslog)
2331 wpa_debug_open_syslog();
2333 ret = eap_register_methods();
2335 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2337 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2338 "the same EAP type.");
2342 global = os_zalloc(sizeof(*global));
2345 dl_list_init(&global->p2p_srv_bonjour);
2346 dl_list_init(&global->p2p_srv_upnp);
2347 global->params.daemonize = params->daemonize;
2348 global->params.wait_for_monitor = params->wait_for_monitor;
2349 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2350 if (params->pid_file)
2351 global->params.pid_file = os_strdup(params->pid_file);
2352 if (params->ctrl_interface)
2353 global->params.ctrl_interface =
2354 os_strdup(params->ctrl_interface);
2355 if (params->override_driver)
2356 global->params.override_driver =
2357 os_strdup(params->override_driver);
2358 if (params->override_ctrl_interface)
2359 global->params.override_ctrl_interface =
2360 os_strdup(params->override_ctrl_interface);
2361 wpa_debug_level = global->params.wpa_debug_level =
2362 params->wpa_debug_level;
2363 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2364 params->wpa_debug_show_keys;
2365 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2366 params->wpa_debug_timestamp;
2369 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2370 wpa_supplicant_deinit(global);
2374 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2375 if (global->ctrl_iface == NULL) {
2376 wpa_supplicant_deinit(global);
2380 if (wpas_notify_supplicant_initialized(global)) {
2381 wpa_supplicant_deinit(global);
2385 for (i = 0; wpa_drivers[i]; i++)
2386 global->drv_count++;
2387 if (global->drv_count == 0) {
2388 wpa_printf(MSG_ERROR, "No drivers enabled");
2389 wpa_supplicant_deinit(global);
2392 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2393 if (global->drv_priv == NULL) {
2394 wpa_supplicant_deinit(global);
2397 for (i = 0; wpa_drivers[i]; i++) {
2398 if (!wpa_drivers[i]->global_init)
2400 global->drv_priv[i] = wpa_drivers[i]->global_init();
2401 if (global->drv_priv[i] == NULL) {
2402 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2403 "'%s'", wpa_drivers[i]->name);
2404 wpa_supplicant_deinit(global);
2414 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2415 * @global: Pointer to global data from wpa_supplicant_init()
2416 * Returns: 0 after successful event loop run, -1 on failure
2418 * This function starts the main event loop and continues running as long as
2419 * there are any remaining events. In most cases, this function is running as
2420 * long as the %wpa_supplicant process in still in use.
2422 int wpa_supplicant_run(struct wpa_global *global)
2424 struct wpa_supplicant *wpa_s;
2426 if (global->params.daemonize &&
2427 wpa_supplicant_daemon(global->params.pid_file))
2430 if (global->params.wait_for_monitor) {
2431 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2432 if (wpa_s->ctrl_iface)
2433 wpa_supplicant_ctrl_iface_wait(
2437 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2438 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
2447 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2448 * @global: Pointer to global data from wpa_supplicant_init()
2450 * This function is called to deinitialize %wpa_supplicant and to free all
2451 * allocated resources. Remaining network interfaces will also be removed.
2453 void wpa_supplicant_deinit(struct wpa_global *global)
2461 wpas_p2p_deinit_global(global);
2462 #endif /* CONFIG_P2P */
2464 while (global->ifaces)
2465 wpa_supplicant_remove_iface(global, global->ifaces);
2467 if (global->ctrl_iface)
2468 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2470 wpas_notify_supplicant_deinitialized(global);
2472 eap_peer_unregister_methods();
2474 eap_server_unregister_methods();
2475 #endif /* CONFIG_AP */
2477 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2478 if (!global->drv_priv[i])
2480 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2482 os_free(global->drv_priv);
2486 if (global->params.pid_file) {
2487 os_daemonize_terminate(global->params.pid_file);
2488 os_free(global->params.pid_file);
2490 os_free(global->params.ctrl_interface);
2491 os_free(global->params.override_driver);
2492 os_free(global->params.override_ctrl_interface);
2495 wpa_debug_close_syslog();
2496 wpa_debug_close_file();
2500 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2503 wpas_wps_update_config(wpa_s);
2504 #endif /* CONFIG_WPS */
2507 wpas_p2p_update_config(wpa_s);
2508 #endif /* CONFIG_P2P */
2510 wpa_s->conf->changed_parameters = 0;