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"
39 #include "blacklist.h"
40 #include "wpas_glue.h"
41 #include "wps_supplicant.h"
50 const char *wpa_supplicant_version =
51 "wpa_supplicant v" VERSION_STR "\n"
52 "Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi> and contributors";
54 const char *wpa_supplicant_license =
55 "This program is free software. You can distribute it and/or modify it\n"
56 "under the terms of the GNU General Public License version 2.\n"
58 "Alternatively, this software may be distributed under the terms of the\n"
59 "BSD license. See README and COPYING for more details.\n"
60 #ifdef EAP_TLS_OPENSSL
61 "\nThis product includes software developed by the OpenSSL Project\n"
62 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
63 #endif /* EAP_TLS_OPENSSL */
66 #ifndef CONFIG_NO_STDOUT_DEBUG
67 /* Long text divided into parts in order to fit in C89 strings size limits. */
68 const char *wpa_supplicant_full_license1 =
69 "This program is free software; you can redistribute it and/or modify\n"
70 "it under the terms of the GNU General Public License version 2 as\n"
71 "published by the Free Software Foundation.\n"
73 "This program is distributed in the hope that it will be useful,\n"
74 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
75 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
76 "GNU General Public License for more details.\n"
78 const char *wpa_supplicant_full_license2 =
79 "You should have received a copy of the GNU General Public License\n"
80 "along with this program; if not, write to the Free Software\n"
81 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
83 "Alternatively, this software may be distributed under the terms of the\n"
86 "Redistribution and use in source and binary forms, with or without\n"
87 "modification, are permitted provided that the following conditions are\n"
90 const char *wpa_supplicant_full_license3 =
91 "1. Redistributions of source code must retain the above copyright\n"
92 " notice, this list of conditions and the following disclaimer.\n"
94 "2. Redistributions in binary form must reproduce the above copyright\n"
95 " notice, this list of conditions and the following disclaimer in the\n"
96 " documentation and/or other materials provided with the distribution.\n"
98 const char *wpa_supplicant_full_license4 =
99 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
100 " names of its contributors may be used to endorse or promote products\n"
101 " derived from this software without specific prior written permission.\n"
103 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
104 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
105 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
106 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
107 const char *wpa_supplicant_full_license5 =
108 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
109 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
110 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
111 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
112 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
113 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
114 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
116 #endif /* CONFIG_NO_STDOUT_DEBUG */
118 extern int wpa_debug_level;
119 extern int wpa_debug_show_keys;
120 extern int wpa_debug_timestamp;
121 extern struct wpa_driver_ops *wpa_drivers[];
123 /* Configure default/group WEP keys for static WEP */
124 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
128 for (i = 0; i < NUM_WEP_KEYS; i++) {
129 if (ssid->wep_key_len[i] == 0)
133 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
134 (u8 *) "\xff\xff\xff\xff\xff\xff",
135 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
136 ssid->wep_key[i], ssid->wep_key_len[i]);
143 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
144 struct wpa_ssid *ssid)
151 /* IBSS/WPA-None uses only one key (Group) for both receiving and
152 * sending unicast and multicast packets. */
154 if (ssid->mode != WPAS_MODE_IBSS) {
155 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
156 "for WPA-None", ssid->mode);
160 if (!ssid->psk_set) {
161 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
165 switch (wpa_s->group_cipher) {
166 case WPA_CIPHER_CCMP:
167 os_memcpy(key, ssid->psk, 16);
171 case WPA_CIPHER_TKIP:
172 /* WPA-None uses the same Michael MIC key for both TX and RX */
173 os_memcpy(key, ssid->psk, 16 + 8);
174 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
179 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
180 "WPA-None", wpa_s->group_cipher);
184 /* TODO: should actually remember the previously used seq#, both for TX
185 * and RX from each STA.. */
187 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
188 0, 1, seq, 6, key, keylen);
192 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
194 struct wpa_supplicant *wpa_s = eloop_ctx;
195 const u8 *bssid = wpa_s->bssid;
196 if (is_zero_ether_addr(bssid))
197 bssid = wpa_s->pending_bssid;
198 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
200 wpa_blacklist_add(wpa_s, bssid);
201 wpa_sm_notify_disassoc(wpa_s->wpa);
202 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
203 wpa_s->reassociate = 1;
204 wpa_supplicant_req_scan(wpa_s, 0, 0);
209 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
210 * @wpa_s: Pointer to wpa_supplicant data
211 * @sec: Number of seconds after which to time out authentication
212 * @usec: Number of microseconds after which to time out authentication
214 * This function is used to schedule a timeout for the current authentication
217 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
220 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
221 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
224 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
225 "%d usec", sec, usec);
226 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
227 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
232 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
233 * @wpa_s: Pointer to wpa_supplicant data
235 * This function is used to cancel authentication timeout scheduled with
236 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
239 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
241 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
242 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
243 wpa_blacklist_del(wpa_s, wpa_s->bssid);
248 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
249 * @wpa_s: Pointer to wpa_supplicant data
251 * This function is used to configure EAPOL state machine based on the selected
252 * authentication mode.
254 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
256 #ifdef IEEE8021X_EAPOL
257 struct eapol_config eapol_conf;
258 struct wpa_ssid *ssid = wpa_s->current_ssid;
260 #ifdef CONFIG_IBSS_RSN
261 if (ssid->mode == WPAS_MODE_IBSS &&
262 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
263 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
265 * RSN IBSS authentication is per-STA and we can disable the
266 * per-BSSID EAPOL authentication.
268 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
269 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
270 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
273 #endif /* CONFIG_IBSS_RSN */
275 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
276 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
278 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
279 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
280 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
282 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
284 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
286 eapol_conf.accept_802_1x_keys = 1;
287 eapol_conf.required_keys = 0;
288 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
289 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
291 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
292 eapol_conf.required_keys |=
293 EAPOL_REQUIRE_KEY_BROADCAST;
296 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
297 eapol_conf.required_keys = 0;
300 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
301 eapol_conf.workaround = ssid->eap_workaround;
302 eapol_conf.eap_disabled =
303 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
304 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
305 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
306 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
307 #endif /* IEEE8021X_EAPOL */
312 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
313 * @wpa_s: Pointer to wpa_supplicant data
314 * @ssid: Configuration data for the network
316 * This function is used to configure WPA state machine and related parameters
317 * to a mode where WPA is not enabled. This is called as part of the
318 * authentication configuration when the selected network does not use WPA.
320 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
321 struct wpa_ssid *ssid)
325 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
326 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
327 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
328 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
330 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
331 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
332 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
333 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
334 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
335 wpa_s->group_cipher = WPA_CIPHER_NONE;
336 wpa_s->mgmt_group_cipher = 0;
338 for (i = 0; i < NUM_WEP_KEYS; i++) {
339 if (ssid->wep_key_len[i] > 5) {
340 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
341 wpa_s->group_cipher = WPA_CIPHER_WEP104;
343 } else if (ssid->wep_key_len[i] > 0) {
344 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
345 wpa_s->group_cipher = WPA_CIPHER_WEP40;
350 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
351 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
352 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
353 wpa_s->pairwise_cipher);
354 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
355 #ifdef CONFIG_IEEE80211W
356 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
357 wpa_s->mgmt_group_cipher);
358 #endif /* CONFIG_IEEE80211W */
360 pmksa_cache_clear_current(wpa_s->wpa);
364 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
366 bgscan_deinit(wpa_s);
367 scard_deinit(wpa_s->scard);
369 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
370 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
371 l2_packet_deinit(wpa_s->l2);
374 l2_packet_deinit(wpa_s->l2_br);
378 if (wpa_s->ctrl_iface) {
379 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
380 wpa_s->ctrl_iface = NULL;
382 if (wpa_s->conf != NULL) {
383 struct wpa_ssid *ssid;
384 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
385 wpas_notify_network_removed(wpa_s, ssid);
386 wpa_config_free(wpa_s->conf);
390 os_free(wpa_s->confname);
391 wpa_s->confname = NULL;
393 wpa_sm_set_eapol(wpa_s->wpa, NULL);
394 eapol_sm_deinit(wpa_s->eapol);
397 rsn_preauth_deinit(wpa_s->wpa);
399 pmksa_candidate_free(wpa_s->wpa);
400 wpa_sm_deinit(wpa_s->wpa);
402 wpa_blacklist_clear(wpa_s);
404 wpa_bss_deinit(wpa_s);
406 wpa_supplicant_cancel_scan(wpa_s);
407 wpa_supplicant_cancel_auth_timeout(wpa_s);
409 ieee80211_sta_deinit(wpa_s);
411 wpas_wps_deinit(wpa_s);
413 wpabuf_free(wpa_s->pending_eapol_rx);
414 wpa_s->pending_eapol_rx = NULL;
416 #ifdef CONFIG_IBSS_RSN
417 ibss_rsn_deinit(wpa_s->ibss_rsn);
418 wpa_s->ibss_rsn = NULL;
419 #endif /* CONFIG_IBSS_RSN */
422 os_free(wpa_s->sme.ft_ies);
423 wpa_s->sme.ft_ies = NULL;
424 wpa_s->sme.ft_ies_len = 0;
425 #endif /* CONFIG_SME */
428 wpa_supplicant_ap_deinit(wpa_s);
429 #endif /* CONFIG_AP */
434 * wpa_clear_keys - Clear keys configured for the driver
435 * @wpa_s: Pointer to wpa_supplicant data
436 * @addr: Previously used BSSID or %NULL if not available
438 * This function clears the encryption keys that has been previously configured
441 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
443 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
445 if (wpa_s->keys_cleared) {
446 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
447 * timing issues with keys being cleared just before new keys
448 * are set or just after association or something similar. This
449 * shows up in group key handshake failing often because of the
450 * client not receiving the first encrypted packets correctly.
451 * Skipping some of the extra key clearing steps seems to help
452 * in completing group key handshake more reliably. */
453 wpa_printf(MSG_DEBUG, "No keys have been configured - "
454 "skip key clearing");
458 /* MLME-DELETEKEYS.request */
459 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
460 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
461 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
462 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
463 #ifdef CONFIG_IEEE80211W
464 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 4, 0, NULL, 0, NULL, 0);
465 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 5, 0, NULL, 0, NULL, 0);
466 #endif /* CONFIG_IEEE80211W */
468 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
470 /* MLME-SETPROTECTION.request(None) */
471 wpa_drv_mlme_setprotection(
473 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
474 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
476 wpa_s->keys_cleared = 1;
481 * wpa_supplicant_state_txt - Get the connection state name as a text string
482 * @state: State (wpa_state; WPA_*)
483 * Returns: The state name as a printable text string
485 const char * wpa_supplicant_state_txt(enum wpa_states state)
488 case WPA_DISCONNECTED:
489 return "DISCONNECTED";
492 case WPA_INTERFACE_DISABLED:
493 return "INTERFACE_DISABLED";
496 case WPA_AUTHENTICATING:
497 return "AUTHENTICATING";
498 case WPA_ASSOCIATING:
499 return "ASSOCIATING";
502 case WPA_4WAY_HANDSHAKE:
503 return "4WAY_HANDSHAKE";
504 case WPA_GROUP_HANDSHAKE:
505 return "GROUP_HANDSHAKE";
515 * wpa_supplicant_set_state - Set current connection state
516 * @wpa_s: Pointer to wpa_supplicant data
517 * @state: The new connection state
519 * This function is called whenever the connection state changes, e.g.,
520 * association is completed for WPA/WPA2 4-Way Handshake is started.
522 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
523 enum wpa_states state)
525 enum wpa_states old_state = wpa_s->wpa_state;
527 wpa_printf(MSG_DEBUG, "State: %s -> %s",
528 wpa_supplicant_state_txt(wpa_s->wpa_state),
529 wpa_supplicant_state_txt(state));
531 if (state != WPA_SCANNING)
532 wpa_supplicant_notify_scanning(wpa_s, 0);
534 if (state == WPA_COMPLETED && wpa_s->new_connection) {
535 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
536 struct wpa_ssid *ssid = wpa_s->current_ssid;
537 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
538 MACSTR " completed %s [id=%d id_str=%s]",
539 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
540 "(reauth)" : "(auth)",
541 ssid ? ssid->id : -1,
542 ssid && ssid->id_str ? ssid->id_str : "");
543 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
544 wpa_s->new_connection = 0;
545 wpa_s->reassociated_connection = 1;
546 wpa_drv_set_operstate(wpa_s, 1);
547 wpa_s->after_wps = 0;
548 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
549 state == WPA_ASSOCIATED) {
550 wpa_s->new_connection = 1;
551 wpa_drv_set_operstate(wpa_s, 0);
553 wpa_s->wpa_state = state;
555 if (wpa_s->wpa_state != old_state)
556 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
560 void wpa_supplicant_terminate_proc(struct wpa_global *global)
564 struct wpa_supplicant *wpa_s = global->ifaces;
566 if (wpas_wps_terminate_pending(wpa_s) == 1)
570 #endif /* CONFIG_WPS */
577 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
579 struct wpa_global *global = signal_ctx;
580 struct wpa_supplicant *wpa_s;
581 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
582 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
585 wpa_supplicant_terminate_proc(global);
589 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
591 enum wpa_states old_state = wpa_s->wpa_state;
593 wpa_s->pairwise_cipher = 0;
594 wpa_s->group_cipher = 0;
595 wpa_s->mgmt_group_cipher = 0;
597 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
598 wpa_s->wpa_state = WPA_DISCONNECTED;
600 if (wpa_s->wpa_state != old_state)
601 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
606 * wpa_supplicant_reload_configuration - Reload configuration data
607 * @wpa_s: Pointer to wpa_supplicant data
608 * Returns: 0 on success or -1 if configuration parsing failed
610 * This function can be used to request that the configuration data is reloaded
611 * (e.g., after configuration file change). This function is reloading
612 * configuration only for one interface, so this may need to be called multiple
613 * times if %wpa_supplicant is controlling multiple interfaces and all
614 * interfaces need reconfiguration.
616 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
618 struct wpa_config *conf;
619 struct wpa_ssid *old_ssid;
623 if (wpa_s->confname == NULL)
625 conf = wpa_config_read(wpa_s->confname);
627 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
628 "file '%s' - exiting", wpa_s->confname);
631 conf->changed_parameters = (unsigned int) -1;
633 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
634 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
635 os_strcmp(conf->ctrl_interface,
636 wpa_s->conf->ctrl_interface) != 0);
638 if (reconf_ctrl && wpa_s->ctrl_iface) {
639 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
640 wpa_s->ctrl_iface = NULL;
643 eapol_sm_invalidate_cached_session(wpa_s->eapol);
644 old_ssid = wpa_s->current_ssid;
645 wpa_s->current_ssid = NULL;
646 if (old_ssid != wpa_s->current_ssid)
647 wpas_notify_network_changed(wpa_s);
650 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
651 * pkcs11_engine_path, pkcs11_module_path.
653 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
655 * Clear forced success to clear EAP state for next
658 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
660 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
661 wpa_sm_set_config(wpa_s->wpa, NULL);
662 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
663 rsn_preauth_deinit(wpa_s->wpa);
665 old_ap_scan = wpa_s->conf->ap_scan;
666 wpa_config_free(wpa_s->conf);
668 if (old_ap_scan != wpa_s->conf->ap_scan)
669 wpas_notify_ap_scan_changed(wpa_s);
672 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
674 wpa_supplicant_update_config(wpa_s);
676 wpa_supplicant_clear_status(wpa_s);
677 wpa_s->reassociate = 1;
678 wpa_supplicant_req_scan(wpa_s, 0, 0);
679 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
684 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
686 struct wpa_global *global = signal_ctx;
687 struct wpa_supplicant *wpa_s;
688 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
689 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
690 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
691 wpa_supplicant_terminate_proc(global);
697 enum wpa_cipher cipher_suite2driver(int cipher)
700 case WPA_CIPHER_NONE:
702 case WPA_CIPHER_WEP40:
704 case WPA_CIPHER_WEP104:
705 return CIPHER_WEP104;
706 case WPA_CIPHER_CCMP:
708 case WPA_CIPHER_TKIP:
715 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
718 case WPA_KEY_MGMT_NONE:
719 return KEY_MGMT_NONE;
720 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
721 return KEY_MGMT_802_1X_NO_WPA;
722 case WPA_KEY_MGMT_IEEE8021X:
723 return KEY_MGMT_802_1X;
724 case WPA_KEY_MGMT_WPA_NONE:
725 return KEY_MGMT_WPA_NONE;
726 case WPA_KEY_MGMT_FT_IEEE8021X:
727 return KEY_MGMT_FT_802_1X;
728 case WPA_KEY_MGMT_FT_PSK:
729 return KEY_MGMT_FT_PSK;
730 case WPA_KEY_MGMT_IEEE8021X_SHA256:
731 return KEY_MGMT_802_1X_SHA256;
732 case WPA_KEY_MGMT_PSK_SHA256:
733 return KEY_MGMT_PSK_SHA256;
734 case WPA_KEY_MGMT_WPS:
736 case WPA_KEY_MGMT_PSK:
743 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
744 struct wpa_ssid *ssid,
745 struct wpa_ie_data *ie)
747 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
750 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
751 "from association info");
756 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
758 if (!(ie->group_cipher & ssid->group_cipher)) {
759 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
760 "cipher 0x%x (mask 0x%x) - reject",
761 ie->group_cipher, ssid->group_cipher);
764 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
765 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
766 "cipher 0x%x (mask 0x%x) - reject",
767 ie->pairwise_cipher, ssid->pairwise_cipher);
770 if (!(ie->key_mgmt & ssid->key_mgmt)) {
771 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
772 "management 0x%x (mask 0x%x) - reject",
773 ie->key_mgmt, ssid->key_mgmt);
777 #ifdef CONFIG_IEEE80211W
778 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
779 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
780 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
781 "that does not support management frame protection - "
785 #endif /* CONFIG_IEEE80211W */
792 * wpa_supplicant_set_suites - Set authentication and encryption parameters
793 * @wpa_s: Pointer to wpa_supplicant data
794 * @bss: Scan results for the selected BSS, or %NULL if not available
795 * @ssid: Configuration data for the selected network
796 * @wpa_ie: Buffer for the WPA/RSN IE
797 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
798 * used buffer length in case the functions returns success.
799 * Returns: 0 on success or -1 on failure
801 * This function is used to configure authentication and encryption parameters
802 * based on the network configuration and scan result for the selected BSS (if
805 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
806 struct wpa_bss *bss, struct wpa_ssid *ssid,
807 u8 *wpa_ie, size_t *wpa_ie_len)
809 struct wpa_ie_data ie;
811 const u8 *bss_wpa, *bss_rsn;
814 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
815 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
817 bss_wpa = bss_rsn = NULL;
819 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
820 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
821 (ie.group_cipher & ssid->group_cipher) &&
822 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
823 (ie.key_mgmt & ssid->key_mgmt)) {
824 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
825 proto = WPA_PROTO_RSN;
826 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
827 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
828 (ie.group_cipher & ssid->group_cipher) &&
829 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
830 (ie.key_mgmt & ssid->key_mgmt)) {
831 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
832 proto = WPA_PROTO_WPA;
834 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
837 if (ssid->proto & WPA_PROTO_RSN)
838 proto = WPA_PROTO_RSN;
840 proto = WPA_PROTO_WPA;
841 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
842 os_memset(&ie, 0, sizeof(ie));
843 ie.group_cipher = ssid->group_cipher;
844 ie.pairwise_cipher = ssid->pairwise_cipher;
845 ie.key_mgmt = ssid->key_mgmt;
846 #ifdef CONFIG_IEEE80211W
847 ie.mgmt_group_cipher =
848 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
849 WPA_CIPHER_AES_128_CMAC : 0;
850 #endif /* CONFIG_IEEE80211W */
851 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
857 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
858 "pairwise %d key_mgmt %d proto %d",
859 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
860 #ifdef CONFIG_IEEE80211W
861 if (ssid->ieee80211w) {
862 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
863 ie.mgmt_group_cipher);
865 #endif /* CONFIG_IEEE80211W */
867 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
868 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
869 !!(ssid->proto & WPA_PROTO_RSN));
871 if (bss || !wpa_s->ap_ies_from_associnfo) {
872 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
873 bss_wpa ? 2 + bss_wpa[1] : 0) ||
874 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
875 bss_rsn ? 2 + bss_rsn[1] : 0))
879 sel = ie.group_cipher & ssid->group_cipher;
880 if (sel & WPA_CIPHER_CCMP) {
881 wpa_s->group_cipher = WPA_CIPHER_CCMP;
882 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
883 } else if (sel & WPA_CIPHER_TKIP) {
884 wpa_s->group_cipher = WPA_CIPHER_TKIP;
885 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
886 } else if (sel & WPA_CIPHER_WEP104) {
887 wpa_s->group_cipher = WPA_CIPHER_WEP104;
888 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
889 } else if (sel & WPA_CIPHER_WEP40) {
890 wpa_s->group_cipher = WPA_CIPHER_WEP40;
891 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
893 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
897 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
898 if (sel & WPA_CIPHER_CCMP) {
899 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
900 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
901 } else if (sel & WPA_CIPHER_TKIP) {
902 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
903 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
904 } else if (sel & WPA_CIPHER_NONE) {
905 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
906 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
908 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
913 sel = ie.key_mgmt & ssid->key_mgmt;
915 #ifdef CONFIG_IEEE80211R
916 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
917 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
918 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
919 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
920 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
921 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
922 #endif /* CONFIG_IEEE80211R */
923 #ifdef CONFIG_IEEE80211W
924 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
925 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
926 wpa_msg(wpa_s, MSG_DEBUG,
927 "WPA: using KEY_MGMT 802.1X with SHA256");
928 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
929 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
930 wpa_msg(wpa_s, MSG_DEBUG,
931 "WPA: using KEY_MGMT PSK with SHA256");
932 #endif /* CONFIG_IEEE80211W */
933 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
934 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
935 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
936 } else if (sel & WPA_KEY_MGMT_PSK) {
937 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
938 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
939 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
940 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
941 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
943 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
944 "key management type.");
948 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
949 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
950 wpa_s->pairwise_cipher);
951 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
953 #ifdef CONFIG_IEEE80211W
954 sel = ie.mgmt_group_cipher;
955 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
956 !(ie.capabilities & WPA_CAPABILITY_MFPC))
958 if (sel & WPA_CIPHER_AES_128_CMAC) {
959 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
960 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
963 wpa_s->mgmt_group_cipher = 0;
964 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
966 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
967 wpa_s->mgmt_group_cipher);
968 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
969 #endif /* CONFIG_IEEE80211W */
971 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
972 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
977 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
978 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
980 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
987 * wpa_supplicant_associate - Request association
988 * @wpa_s: Pointer to wpa_supplicant data
989 * @bss: Scan results for the selected BSS, or %NULL if not available
990 * @ssid: Configuration data for the selected network
992 * This function is used to request %wpa_supplicant to associate with a BSS.
994 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
995 struct wpa_bss *bss, struct wpa_ssid *ssid)
999 int use_crypt, ret, i, bssid_changed;
1000 int algs = WPA_AUTH_ALG_OPEN;
1001 enum wpa_cipher cipher_pairwise, cipher_group;
1002 struct wpa_driver_associate_params params;
1003 int wep_keys_set = 0;
1004 struct wpa_driver_capa capa;
1005 int assoc_failed = 0;
1006 struct wpa_ssid *old_ssid;
1008 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1009 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1011 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1012 wpa_printf(MSG_INFO, "Driver does not support AP "
1016 wpa_supplicant_create_ap(wpa_s, ssid);
1017 wpa_s->current_bss = bss;
1018 #else /* CONFIG_AP */
1019 wpa_printf(MSG_ERROR, "AP mode support not included in the "
1021 #endif /* CONFIG_AP */
1025 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1026 ssid->mode == IEEE80211_MODE_INFRA) {
1027 sme_authenticate(wpa_s, bss, ssid);
1031 os_memset(¶ms, 0, sizeof(params));
1032 wpa_s->reassociate = 0;
1034 #ifdef CONFIG_IEEE80211R
1035 const u8 *ie, *md = NULL;
1036 #endif /* CONFIG_IEEE80211R */
1037 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1038 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1039 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
1040 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1041 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1042 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1044 wpas_notify_bssid_changed(wpa_s);
1045 #ifdef CONFIG_IEEE80211R
1046 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1047 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1049 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
1051 /* Prepare for the next transition */
1052 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
1054 #endif /* CONFIG_IEEE80211R */
1056 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1057 wpa_s->conf->ap_scan == 2 &&
1058 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1059 /* Use ap_scan==1 style network selection to find the network
1061 wpa_s->scan_req = 2;
1062 wpa_s->reassociate = 1;
1063 wpa_supplicant_req_scan(wpa_s, 0, 0);
1065 #endif /* CONFIG_WPS */
1067 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1068 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1069 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1071 wpa_supplicant_cancel_scan(wpa_s);
1073 /* Starting new association, so clear the possibly used WPA IE from the
1074 * previous association. */
1075 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1077 #ifdef IEEE8021X_EAPOL
1078 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1080 if (ssid->non_leap == 0)
1081 algs = WPA_AUTH_ALG_LEAP;
1083 algs |= WPA_AUTH_ALG_LEAP;
1086 #endif /* IEEE8021X_EAPOL */
1087 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1088 if (ssid->auth_alg) {
1089 algs = ssid->auth_alg;
1090 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1094 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1095 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
1096 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1097 WPA_KEY_MGMT_FT_IEEE8021X |
1098 WPA_KEY_MGMT_FT_PSK |
1099 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1100 WPA_KEY_MGMT_PSK_SHA256))) {
1101 int try_opportunistic;
1102 try_opportunistic = ssid->proactive_key_caching &&
1103 (ssid->proto & WPA_PROTO_RSN);
1104 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1105 wpa_s->current_ssid,
1106 try_opportunistic) == 0)
1107 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1108 wpa_ie_len = sizeof(wpa_ie);
1109 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1110 wpa_ie, &wpa_ie_len)) {
1111 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1112 "management and encryption suites");
1115 } else if (ssid->key_mgmt &
1116 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1117 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1118 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1119 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1120 wpa_ie_len = sizeof(wpa_ie);
1121 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1122 wpa_ie, &wpa_ie_len)) {
1123 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1124 "management and encryption suites (no scan "
1129 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1130 struct wpabuf *wps_ie;
1131 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1132 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1133 wpa_ie_len = wpabuf_len(wps_ie);
1134 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1137 wpabuf_free(wps_ie);
1138 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1139 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1140 params.wps = WPS_MODE_PRIVACY;
1142 params.wps = WPS_MODE_OPEN;
1143 #endif /* CONFIG_WPS */
1145 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1149 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1151 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1152 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1153 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1154 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1155 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1157 if (wpa_set_wep_keys(wpa_s, ssid)) {
1162 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1165 #ifdef IEEE8021X_EAPOL
1166 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1167 if ((ssid->eapol_flags &
1168 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1169 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1173 /* Assume that dynamic WEP-104 keys will be used and
1174 * set cipher suites in order for drivers to expect
1176 cipher_pairwise = cipher_group = CIPHER_WEP104;
1179 #endif /* IEEE8021X_EAPOL */
1181 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1182 /* Set the key before (and later after) association */
1183 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1186 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1188 params.bssid = bss->bssid;
1189 params.ssid = bss->ssid;
1190 params.ssid_len = bss->ssid_len;
1191 params.freq = bss->freq;
1193 params.ssid = ssid->ssid;
1194 params.ssid_len = ssid->ssid_len;
1196 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1198 params.freq = ssid->frequency; /* Initial channel for IBSS */
1199 params.wpa_ie = wpa_ie;
1200 params.wpa_ie_len = wpa_ie_len;
1201 params.pairwise_suite = cipher_pairwise;
1202 params.group_suite = cipher_group;
1203 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1204 params.auth_alg = algs;
1205 params.mode = ssid->mode;
1206 for (i = 0; i < NUM_WEP_KEYS; i++) {
1207 if (ssid->wep_key_len[i])
1208 params.wep_key[i] = ssid->wep_key[i];
1209 params.wep_key_len[i] = ssid->wep_key_len[i];
1211 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1213 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1214 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1215 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1216 params.passphrase = ssid->passphrase;
1218 params.psk = ssid->psk;
1221 params.drop_unencrypted = use_crypt;
1223 #ifdef CONFIG_IEEE80211W
1224 params.mgmt_frame_protection = ssid->ieee80211w;
1225 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
1226 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1227 struct wpa_ie_data ie;
1228 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1230 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1231 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1233 params.mgmt_frame_protection =
1234 MGMT_FRAME_PROTECTION_REQUIRED;
1237 #endif /* CONFIG_IEEE80211W */
1239 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1240 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1242 ret = wpa_drv_associate(wpa_s, ¶ms);
1244 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1246 /* try to continue anyway; new association will be tried again
1251 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1252 /* Set the key after the association just in case association
1253 * cleared the previously configured key. */
1254 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1255 /* No need to timeout authentication since there is no key
1257 wpa_supplicant_cancel_auth_timeout(wpa_s);
1258 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1259 #ifdef CONFIG_IBSS_RSN
1260 } else if (ssid->mode == WPAS_MODE_IBSS &&
1261 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1262 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1263 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1265 * RSN IBSS authentication is per-STA and we can disable the
1266 * per-BSSID authentication.
1268 wpa_supplicant_cancel_auth_timeout(wpa_s);
1269 #endif /* CONFIG_IBSS_RSN */
1271 /* Timeout for IEEE 802.11 authentication and association */
1275 /* give IBSS a bit more time */
1276 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1277 } else if (wpa_s->conf->ap_scan == 1) {
1278 /* give IBSS a bit more time */
1279 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1281 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1284 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1285 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1286 /* Set static WEP keys again */
1287 wpa_set_wep_keys(wpa_s, ssid);
1290 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1292 * Do not allow EAP session resumption between different
1293 * network configurations.
1295 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1297 old_ssid = wpa_s->current_ssid;
1298 wpa_s->current_ssid = ssid;
1299 wpa_s->current_bss = bss;
1300 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1301 wpa_supplicant_initiate_eapol(wpa_s);
1302 if (old_ssid != wpa_s->current_ssid)
1303 wpas_notify_network_changed(wpa_s);
1307 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1310 struct wpa_ssid *old_ssid;
1312 wpa_clear_keys(wpa_s, addr);
1313 wpa_supplicant_mark_disassoc(wpa_s);
1314 old_ssid = wpa_s->current_ssid;
1315 wpa_s->current_ssid = NULL;
1316 wpa_s->current_bss = NULL;
1317 wpa_sm_set_config(wpa_s->wpa, NULL);
1318 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1319 if (old_ssid != wpa_s->current_ssid)
1320 wpas_notify_network_changed(wpa_s);
1321 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1326 * wpa_supplicant_disassociate - Disassociate the current connection
1327 * @wpa_s: Pointer to wpa_supplicant data
1328 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1330 * This function is used to request %wpa_supplicant to disassociate with the
1333 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1338 if (!is_zero_ether_addr(wpa_s->bssid)) {
1339 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1340 ieee80211_sta_disassociate(wpa_s, reason_code);
1342 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1343 addr = wpa_s->bssid;
1346 wpa_supplicant_clear_connection(wpa_s, addr);
1351 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1352 * @wpa_s: Pointer to wpa_supplicant data
1353 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1355 * This function is used to request %wpa_supplicant to deauthenticate from the
1358 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1363 if (!is_zero_ether_addr(wpa_s->bssid)) {
1364 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1365 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1367 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1369 addr = wpa_s->bssid;
1372 wpa_supplicant_clear_connection(wpa_s, addr);
1377 * wpa_supplicant_enable_network - Mark a configured network as enabled
1378 * @wpa_s: wpa_supplicant structure for a network interface
1379 * @ssid: wpa_ssid structure for a configured network or %NULL
1381 * Enables the specified network or all networks if no network specified.
1383 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1384 struct wpa_ssid *ssid)
1386 struct wpa_ssid *other_ssid;
1390 other_ssid = wpa_s->conf->ssid;
1391 while (other_ssid) {
1392 if (other_ssid == wpa_s->current_ssid &&
1393 other_ssid->disabled)
1394 wpa_s->reassociate = 1;
1396 was_disabled = other_ssid->disabled;
1398 other_ssid->disabled = 0;
1400 if (was_disabled != other_ssid->disabled)
1401 wpas_notify_network_enabled_changed(
1404 other_ssid = other_ssid->next;
1406 if (wpa_s->reassociate)
1407 wpa_supplicant_req_scan(wpa_s, 0, 0);
1408 } else if (ssid->disabled) {
1409 if (wpa_s->current_ssid == NULL) {
1411 * Try to reassociate since there is no current
1412 * configuration and a new network was made available.
1414 wpa_s->reassociate = 1;
1415 wpa_supplicant_req_scan(wpa_s, 0, 0);
1418 was_disabled = ssid->disabled;
1422 if (was_disabled != ssid->disabled)
1423 wpas_notify_network_enabled_changed(wpa_s, ssid);
1429 * wpa_supplicant_disable_network - Mark a configured network as disabled
1430 * @wpa_s: wpa_supplicant structure for a network interface
1431 * @ssid: wpa_ssid structure for a configured network or %NULL
1433 * Disables the specified network or all networks if no network specified.
1435 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1436 struct wpa_ssid *ssid)
1438 struct wpa_ssid *other_ssid;
1442 other_ssid = wpa_s->conf->ssid;
1443 while (other_ssid) {
1444 was_disabled = other_ssid->disabled;
1446 other_ssid->disabled = 1;
1448 if (was_disabled != other_ssid->disabled)
1449 wpas_notify_network_enabled_changed(
1452 other_ssid = other_ssid->next;
1454 if (wpa_s->current_ssid)
1455 wpa_supplicant_disassociate(
1456 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1458 if (ssid == wpa_s->current_ssid)
1459 wpa_supplicant_disassociate(
1460 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1462 was_disabled = ssid->disabled;
1466 if (was_disabled != ssid->disabled)
1467 wpas_notify_network_enabled_changed(wpa_s, ssid);
1473 * wpa_supplicant_select_network - Attempt association with a network
1474 * @wpa_s: wpa_supplicant structure for a network interface
1475 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1477 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1478 struct wpa_ssid *ssid)
1481 struct wpa_ssid *other_ssid;
1483 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1484 wpa_supplicant_disassociate(
1485 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1488 * Mark all other networks disabled or mark all networks enabled if no
1489 * network specified.
1491 other_ssid = wpa_s->conf->ssid;
1492 while (other_ssid) {
1493 int was_disabled = other_ssid->disabled;
1495 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1497 if (was_disabled != other_ssid->disabled)
1498 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1500 other_ssid = other_ssid->next;
1502 wpa_s->disconnected = 0;
1503 wpa_s->reassociate = 1;
1504 wpa_supplicant_req_scan(wpa_s, 0, 0);
1507 wpas_notify_network_selected(wpa_s, ssid);
1512 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1513 * @wpa_s: wpa_supplicant structure for a network interface
1514 * @ap_scan: AP scan mode
1515 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1518 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1523 if (ap_scan < 0 || ap_scan > 2)
1526 old_ap_scan = wpa_s->conf->ap_scan;
1527 wpa_s->conf->ap_scan = ap_scan;
1529 if (old_ap_scan != wpa_s->conf->ap_scan)
1530 wpas_notify_ap_scan_changed(wpa_s);
1537 * wpa_supplicant_set_debug_params - Set global debug params
1538 * @global: wpa_global structure
1539 * @debug_level: debug level
1540 * @debug_timestamp: determines if show timestamp in debug data
1541 * @debug_show_keys: determines if show keys in debug data
1542 * Returns: 0 if succeed or -1 if debug_level has wrong value
1544 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1545 int debug_timestamp, int debug_show_keys)
1548 int old_level, old_timestamp, old_show_keys;
1550 /* check for allowed debuglevels */
1551 if (debug_level != MSG_MSGDUMP &&
1552 debug_level != MSG_DEBUG &&
1553 debug_level != MSG_INFO &&
1554 debug_level != MSG_WARNING &&
1555 debug_level != MSG_ERROR)
1558 old_level = wpa_debug_level;
1559 old_timestamp = wpa_debug_timestamp;
1560 old_show_keys = wpa_debug_show_keys;
1562 wpa_debug_level = debug_level;
1563 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1564 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1566 if (wpa_debug_level != old_level)
1567 wpas_notify_debug_level_changed(global);
1568 if (wpa_debug_timestamp != old_timestamp)
1569 wpas_notify_debug_timestamp_changed(global);
1570 if (wpa_debug_show_keys != old_show_keys)
1571 wpas_notify_debug_show_keys_changed(global);
1578 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1579 * @wpa_s: Pointer to wpa_supplicant data
1580 * Returns: A pointer to the current network structure or %NULL on failure
1582 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1584 struct wpa_ssid *entry;
1585 u8 ssid[MAX_SSID_LEN];
1591 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1592 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1593 wpa_printf(MSG_WARNING, "Could not read SSID from "
1598 res = wpa_drv_get_ssid(wpa_s, ssid);
1600 wpa_printf(MSG_WARNING, "Could not read SSID from "
1607 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1608 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1609 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1610 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1614 wired = wpa_s->conf->ap_scan == 0 &&
1615 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1617 entry = wpa_s->conf->ssid;
1619 if (!entry->disabled &&
1620 ((ssid_len == entry->ssid_len &&
1621 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1622 (!entry->bssid_set ||
1623 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1626 if (!entry->disabled &&
1627 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1628 (entry->ssid == NULL || entry->ssid_len == 0) &&
1629 (!entry->bssid_set ||
1630 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1632 #endif /* CONFIG_WPS */
1633 entry = entry->next;
1640 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1650 if (wpa_drivers[0] == NULL) {
1651 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1657 /* default to first driver in the list */
1658 wpa_s->driver = wpa_drivers[0];
1659 wpa_s->global_drv_priv = wpa_s->global->drv_priv[0];
1663 pos = os_strchr(name, ',');
1667 len = os_strlen(name);
1668 for (i = 0; wpa_drivers[i]; i++) {
1669 if (os_strlen(wpa_drivers[i]->name) == len &&
1670 os_strncmp(name, wpa_drivers[i]->name, len) ==
1672 wpa_s->driver = wpa_drivers[i];
1673 wpa_s->global_drv_priv = wpa_s->global->drv_priv[i];
1678 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1684 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1685 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1686 * with struct wpa_driver_ops::init()
1687 * @src_addr: Source address of the EAPOL frame
1688 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1689 * @len: Length of the EAPOL data
1691 * This function is called for each received EAPOL frame. Most driver
1692 * interfaces rely on more generic OS mechanism for receiving frames through
1693 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1694 * take care of received EAPOL frames and deliver them to the core supplicant
1695 * code by calling this function.
1697 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1698 const u8 *buf, size_t len)
1700 struct wpa_supplicant *wpa_s = ctx;
1702 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1703 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1705 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1707 * There is possible race condition between receiving the
1708 * association event and the EAPOL frame since they are coming
1709 * through different paths from the driver. In order to avoid
1710 * issues in trying to process the EAPOL frame before receiving
1711 * association information, lets queue it for processing until
1712 * the association event is received.
1714 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of "
1715 "received EAPOL frame");
1716 wpabuf_free(wpa_s->pending_eapol_rx);
1717 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1718 if (wpa_s->pending_eapol_rx) {
1719 os_get_time(&wpa_s->pending_eapol_rx_time);
1720 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1727 if (wpa_s->ap_iface) {
1728 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1731 #endif /* CONFIG_AP */
1733 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1734 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1735 "no key management is configured");
1739 if (wpa_s->eapol_received == 0 &&
1740 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1741 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1742 wpa_s->wpa_state != WPA_COMPLETED) &&
1743 (wpa_s->current_ssid == NULL ||
1744 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
1745 /* Timeout for completing IEEE 802.1X and WPA authentication */
1746 wpa_supplicant_req_auth_timeout(
1748 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1749 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1750 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1753 wpa_s->eapol_received++;
1755 if (wpa_s->countermeasures) {
1756 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1761 #ifdef CONFIG_IBSS_RSN
1762 if (wpa_s->current_ssid &&
1763 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
1764 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1767 #endif /* CONFIG_IBSS_RSN */
1769 /* Source address of the incoming EAPOL frame could be compared to the
1770 * current BSSID. However, it is possible that a centralized
1771 * Authenticator could be using another MAC address than the BSSID of
1772 * an AP, so just allow any address to be used for now. The replies are
1773 * still sent to the current BSSID (if available), though. */
1775 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1776 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1777 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1779 wpa_drv_poll(wpa_s);
1780 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1781 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1782 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1784 * Set portValid = TRUE here since we are going to skip 4-way
1785 * handshake processing which would normally set portValid. We
1786 * need this to allow the EAPOL state machines to be completed
1787 * without going through EAPOL-Key handshake.
1789 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1795 * wpa_supplicant_driver_init - Initialize driver interface parameters
1796 * @wpa_s: Pointer to wpa_supplicant data
1797 * Returns: 0 on success, -1 on failure
1799 * This function is called to initialize driver interface parameters.
1800 * wpa_drv_init() must have been called before this function to initialize the
1803 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1805 static int interface_count = 0;
1807 if (wpa_s->driver->send_eapol) {
1808 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1810 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1812 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1813 wpa_drv_get_mac_addr(wpa_s),
1815 wpa_supplicant_rx_eapol, wpa_s, 0);
1816 if (wpa_s->l2 == NULL)
1820 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1821 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1825 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1826 MAC2STR(wpa_s->own_addr));
1828 if (wpa_s->bridge_ifname[0]) {
1829 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1830 " '%s'", wpa_s->bridge_ifname);
1831 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1834 wpa_supplicant_rx_eapol, wpa_s,
1836 if (wpa_s->l2_br == NULL) {
1837 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1838 "connection for the bridge interface '%s'",
1839 wpa_s->bridge_ifname);
1844 wpa_clear_keys(wpa_s, NULL);
1846 /* Make sure that TKIP countermeasures are not left enabled (could
1847 * happen if wpa_supplicant is killed during countermeasures. */
1848 wpa_drv_set_countermeasures(wpa_s, 0);
1850 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1851 wpa_drv_flush_pmkid(wpa_s);
1853 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1854 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
1855 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1858 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1864 static int wpa_supplicant_daemon(const char *pid_file)
1866 wpa_printf(MSG_DEBUG, "Daemonize..");
1867 return os_daemonize(pid_file);
1871 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1873 struct wpa_supplicant *wpa_s;
1875 wpa_s = os_zalloc(sizeof(*wpa_s));
1878 wpa_s->scan_req = 1;
1879 wpa_s->new_connection = 1;
1885 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1886 struct wpa_interface *iface)
1888 const char *ifname, *driver;
1889 struct wpa_driver_capa capa;
1891 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1892 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1893 iface->confname ? iface->confname : "N/A",
1894 iface->driver ? iface->driver : "default",
1895 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1896 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1898 if (iface->confname) {
1899 #ifdef CONFIG_BACKEND_FILE
1900 wpa_s->confname = os_rel2abs_path(iface->confname);
1901 if (wpa_s->confname == NULL) {
1902 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1903 "for configuration file '%s'.",
1907 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1908 iface->confname, wpa_s->confname);
1909 #else /* CONFIG_BACKEND_FILE */
1910 wpa_s->confname = os_strdup(iface->confname);
1911 #endif /* CONFIG_BACKEND_FILE */
1912 wpa_s->conf = wpa_config_read(wpa_s->confname);
1913 if (wpa_s->conf == NULL) {
1914 wpa_printf(MSG_ERROR, "Failed to read or parse "
1915 "configuration '%s'.", wpa_s->confname);
1920 * Override ctrl_interface and driver_param if set on command
1923 if (iface->ctrl_interface) {
1924 os_free(wpa_s->conf->ctrl_interface);
1925 wpa_s->conf->ctrl_interface =
1926 os_strdup(iface->ctrl_interface);
1929 if (iface->driver_param) {
1930 os_free(wpa_s->conf->driver_param);
1931 wpa_s->conf->driver_param =
1932 os_strdup(iface->driver_param);
1935 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1936 iface->driver_param);
1938 if (wpa_s->conf == NULL) {
1939 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1943 if (iface->ifname == NULL) {
1944 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1947 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1948 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1952 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1954 if (iface->bridge_ifname) {
1955 if (os_strlen(iface->bridge_ifname) >=
1956 sizeof(wpa_s->bridge_ifname)) {
1957 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1958 "name '%s'.", iface->bridge_ifname);
1961 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1962 sizeof(wpa_s->bridge_ifname));
1965 /* RSNA Supplicant Key Management - INITIALIZE */
1966 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1967 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1969 /* Initialize driver interface and register driver event handler before
1970 * L2 receive handler so that association events are processed before
1971 * EAPOL-Key packets if both become available for the same select()
1973 driver = iface->driver;
1975 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
1978 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1979 if (wpa_s->drv_priv == NULL) {
1981 pos = driver ? os_strchr(driver, ',') : NULL;
1983 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
1984 "interface - try next driver wrapper");
1988 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1991 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1992 wpa_printf(MSG_ERROR, "Driver interface rejected "
1993 "driver_param '%s'", wpa_s->conf->driver_param);
1997 ifname = wpa_drv_get_ifname(wpa_s);
1998 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1999 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
2000 "name with '%s'", ifname);
2001 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2004 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2007 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2008 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2010 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2012 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2013 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2014 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2015 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2016 "dot11RSNAConfigPMKLifetime");
2020 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2021 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2022 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2023 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2024 "dot11RSNAConfigPMKReauthThreshold");
2028 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2029 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2030 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2031 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2032 "dot11RSNAConfigSATimeout");
2036 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2037 wpa_s->drv_flags = capa.flags;
2038 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2039 if (ieee80211_sta_init(wpa_s))
2042 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2043 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
2045 if (wpa_s->max_remain_on_chan == 0)
2046 wpa_s->max_remain_on_chan = 1000;
2048 if (wpa_supplicant_driver_init(wpa_s) < 0)
2051 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2052 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2053 wpa_printf(MSG_DEBUG, "Failed to set country");
2057 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2059 if (wpas_wps_init(wpa_s))
2062 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2064 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2066 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2067 if (wpa_s->ctrl_iface == NULL) {
2068 wpa_printf(MSG_ERROR,
2069 "Failed to initialize control interface '%s'.\n"
2070 "You may have another wpa_supplicant process "
2071 "already running or the file was\n"
2072 "left by an unclean termination of wpa_supplicant "
2073 "in which case you will need\n"
2074 "to manually remove this file before starting "
2075 "wpa_supplicant again.\n",
2076 wpa_s->conf->ctrl_interface);
2080 #ifdef CONFIG_IBSS_RSN
2081 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2082 if (!wpa_s->ibss_rsn) {
2083 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
2086 #endif /* CONFIG_IBSS_RSN */
2088 if (wpa_bss_init(wpa_s) < 0)
2095 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2098 if (wpa_s->drv_priv) {
2099 wpa_supplicant_deauthenticate(wpa_s,
2100 WLAN_REASON_DEAUTH_LEAVING);
2102 wpa_drv_set_countermeasures(wpa_s, 0);
2103 wpa_clear_keys(wpa_s, NULL);
2106 wpa_supplicant_cleanup(wpa_s);
2109 wpas_notify_iface_removed(wpa_s);
2111 if (wpa_s->drv_priv)
2112 wpa_drv_deinit(wpa_s);
2117 * wpa_supplicant_add_iface - Add a new network interface
2118 * @global: Pointer to global data from wpa_supplicant_init()
2119 * @iface: Interface configuration options
2120 * Returns: Pointer to the created interface or %NULL on failure
2122 * This function is used to add new network interfaces for %wpa_supplicant.
2123 * This can be called before wpa_supplicant_run() to add interfaces before the
2124 * main event loop has been started. In addition, new interfaces can be added
2125 * dynamically while %wpa_supplicant is already running. This could happen,
2126 * e.g., when a hotplug network adapter is inserted.
2128 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2129 struct wpa_interface *iface)
2131 struct wpa_supplicant *wpa_s;
2132 struct wpa_interface t_iface;
2133 struct wpa_ssid *ssid;
2135 if (global == NULL || iface == NULL)
2138 wpa_s = wpa_supplicant_alloc();
2142 wpa_s->global = global;
2145 if (global->params.override_driver) {
2146 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2148 iface->driver, global->params.override_driver);
2149 t_iface.driver = global->params.override_driver;
2151 if (global->params.override_ctrl_interface) {
2152 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2153 "ctrl_interface ('%s' -> '%s')",
2154 iface->ctrl_interface,
2155 global->params.override_ctrl_interface);
2156 t_iface.ctrl_interface =
2157 global->params.override_ctrl_interface;
2159 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2160 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2162 wpa_supplicant_deinit_iface(wpa_s, 0);
2167 /* Notify the control interfaces about new iface */
2168 if (wpas_notify_iface_added(wpa_s)) {
2169 wpa_supplicant_deinit_iface(wpa_s, 1);
2174 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2175 wpas_notify_network_added(wpa_s, ssid);
2177 wpa_s->next = global->ifaces;
2178 global->ifaces = wpa_s;
2180 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2187 * wpa_supplicant_remove_iface - Remove a network interface
2188 * @global: Pointer to global data from wpa_supplicant_init()
2189 * @wpa_s: Pointer to the network interface to be removed
2190 * Returns: 0 if interface was removed, -1 if interface was not found
2192 * This function can be used to dynamically remove network interfaces from
2193 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2194 * addition, this function is used to remove all remaining interfaces when
2195 * %wpa_supplicant is terminated.
2197 int wpa_supplicant_remove_iface(struct wpa_global *global,
2198 struct wpa_supplicant *wpa_s)
2200 struct wpa_supplicant *prev;
2202 /* Remove interface from the global list of interfaces */
2203 prev = global->ifaces;
2204 if (prev == wpa_s) {
2205 global->ifaces = wpa_s->next;
2207 while (prev && prev->next != wpa_s)
2211 prev->next = wpa_s->next;
2214 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2216 wpa_supplicant_deinit_iface(wpa_s, 1);
2224 * wpa_supplicant_get_iface - Get a new network interface
2225 * @global: Pointer to global data from wpa_supplicant_init()
2226 * @ifname: Interface name
2227 * Returns: Pointer to the interface or %NULL if not found
2229 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2232 struct wpa_supplicant *wpa_s;
2234 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2235 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2243 * wpa_supplicant_init - Initialize %wpa_supplicant
2244 * @params: Parameters for %wpa_supplicant
2245 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2247 * This function is used to initialize %wpa_supplicant. After successful
2248 * initialization, the returned data pointer can be used to add and remove
2249 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2251 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2253 struct wpa_global *global;
2259 wpa_debug_open_file(params->wpa_debug_file_path);
2260 if (params->wpa_debug_syslog)
2261 wpa_debug_open_syslog();
2263 ret = eap_register_methods();
2265 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2267 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2268 "the same EAP type.");
2272 global = os_zalloc(sizeof(*global));
2275 global->params.daemonize = params->daemonize;
2276 global->params.wait_for_monitor = params->wait_for_monitor;
2277 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2278 if (params->pid_file)
2279 global->params.pid_file = os_strdup(params->pid_file);
2280 if (params->ctrl_interface)
2281 global->params.ctrl_interface =
2282 os_strdup(params->ctrl_interface);
2283 if (params->override_driver)
2284 global->params.override_driver =
2285 os_strdup(params->override_driver);
2286 if (params->override_ctrl_interface)
2287 global->params.override_ctrl_interface =
2288 os_strdup(params->override_ctrl_interface);
2289 wpa_debug_level = global->params.wpa_debug_level =
2290 params->wpa_debug_level;
2291 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2292 params->wpa_debug_show_keys;
2293 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2294 params->wpa_debug_timestamp;
2297 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2298 wpa_supplicant_deinit(global);
2302 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2303 if (global->ctrl_iface == NULL) {
2304 wpa_supplicant_deinit(global);
2308 if (wpas_notify_supplicant_initialized(global)) {
2309 wpa_supplicant_deinit(global);
2313 for (i = 0; wpa_drivers[i]; i++)
2314 global->drv_count++;
2315 if (global->drv_count == 0) {
2316 wpa_printf(MSG_ERROR, "No drivers enabled");
2317 wpa_supplicant_deinit(global);
2320 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2321 if (global->drv_priv == NULL) {
2322 wpa_supplicant_deinit(global);
2325 for (i = 0; wpa_drivers[i]; i++) {
2326 if (!wpa_drivers[i]->global_init)
2328 global->drv_priv[i] = wpa_drivers[i]->global_init();
2329 if (global->drv_priv[i] == NULL) {
2330 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2331 "'%s'", wpa_drivers[i]->name);
2332 wpa_supplicant_deinit(global);
2342 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2343 * @global: Pointer to global data from wpa_supplicant_init()
2344 * Returns: 0 after successful event loop run, -1 on failure
2346 * This function starts the main event loop and continues running as long as
2347 * there are any remaining events. In most cases, this function is running as
2348 * long as the %wpa_supplicant process in still in use.
2350 int wpa_supplicant_run(struct wpa_global *global)
2352 struct wpa_supplicant *wpa_s;
2354 if (global->params.daemonize &&
2355 wpa_supplicant_daemon(global->params.pid_file))
2358 if (global->params.wait_for_monitor) {
2359 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2360 if (wpa_s->ctrl_iface)
2361 wpa_supplicant_ctrl_iface_wait(
2365 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2366 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
2375 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2376 * @global: Pointer to global data from wpa_supplicant_init()
2378 * This function is called to deinitialize %wpa_supplicant and to free all
2379 * allocated resources. Remaining network interfaces will also be removed.
2381 void wpa_supplicant_deinit(struct wpa_global *global)
2388 while (global->ifaces)
2389 wpa_supplicant_remove_iface(global, global->ifaces);
2391 if (global->ctrl_iface)
2392 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2394 wpas_notify_supplicant_deinitialized(global);
2396 eap_peer_unregister_methods();
2398 eap_server_unregister_methods();
2399 #endif /* CONFIG_AP */
2401 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2402 if (!global->drv_priv[i])
2404 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2406 os_free(global->drv_priv);
2410 if (global->params.pid_file) {
2411 os_daemonize_terminate(global->params.pid_file);
2412 os_free(global->params.pid_file);
2414 os_free(global->params.ctrl_interface);
2415 os_free(global->params.override_driver);
2416 os_free(global->params.override_ctrl_interface);
2419 wpa_debug_close_syslog();
2420 wpa_debug_close_file();
2424 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2427 wpas_wps_update_config(wpa_s);
2428 #endif /* CONFIG_WPS */
2430 wpa_s->conf->changed_parameters = 0;