3 * Copyright (c) 2003-2009, 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"
48 const char *wpa_supplicant_version =
49 "wpa_supplicant v" VERSION_STR "\n"
50 "Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi> and contributors";
52 const char *wpa_supplicant_license =
53 "This program is free software. You can distribute it and/or modify it\n"
54 "under the terms of the GNU General Public License version 2.\n"
56 "Alternatively, this software may be distributed under the terms of the\n"
57 "BSD license. See README and COPYING for more details.\n"
58 #ifdef EAP_TLS_OPENSSL
59 "\nThis product includes software developed by the OpenSSL Project\n"
60 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
61 #endif /* EAP_TLS_OPENSSL */
64 #ifndef CONFIG_NO_STDOUT_DEBUG
65 /* Long text divided into parts in order to fit in C89 strings size limits. */
66 const char *wpa_supplicant_full_license1 =
67 "This program is free software; you can redistribute it and/or modify\n"
68 "it under the terms of the GNU General Public License version 2 as\n"
69 "published by the Free Software Foundation.\n"
71 "This program is distributed in the hope that it will be useful,\n"
72 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
73 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
74 "GNU General Public License for more details.\n"
76 const char *wpa_supplicant_full_license2 =
77 "You should have received a copy of the GNU General Public License\n"
78 "along with this program; if not, write to the Free Software\n"
79 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
81 "Alternatively, this software may be distributed under the terms of the\n"
84 "Redistribution and use in source and binary forms, with or without\n"
85 "modification, are permitted provided that the following conditions are\n"
88 const char *wpa_supplicant_full_license3 =
89 "1. Redistributions of source code must retain the above copyright\n"
90 " notice, this list of conditions and the following disclaimer.\n"
92 "2. Redistributions in binary form must reproduce the above copyright\n"
93 " notice, this list of conditions and the following disclaimer in the\n"
94 " documentation and/or other materials provided with the distribution.\n"
96 const char *wpa_supplicant_full_license4 =
97 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
98 " names of its contributors may be used to endorse or promote products\n"
99 " derived from this software without specific prior written permission.\n"
101 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
102 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
103 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
104 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
105 const char *wpa_supplicant_full_license5 =
106 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
107 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
108 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
109 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
110 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
111 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
112 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
114 #endif /* CONFIG_NO_STDOUT_DEBUG */
116 extern int wpa_debug_level;
117 extern int wpa_debug_show_keys;
118 extern int wpa_debug_timestamp;
119 extern struct wpa_driver_ops *wpa_drivers[];
121 /* Configure default/group WEP keys for static WEP */
122 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
126 for (i = 0; i < NUM_WEP_KEYS; i++) {
127 if (ssid->wep_key_len[i] == 0)
131 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
132 (u8 *) "\xff\xff\xff\xff\xff\xff",
133 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
134 ssid->wep_key[i], ssid->wep_key_len[i]);
141 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
142 struct wpa_ssid *ssid)
149 /* IBSS/WPA-None uses only one key (Group) for both receiving and
150 * sending unicast and multicast packets. */
152 if (ssid->mode != IEEE80211_MODE_IBSS) {
153 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
154 "for WPA-None", ssid->mode);
158 if (!ssid->psk_set) {
159 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
163 switch (wpa_s->group_cipher) {
164 case WPA_CIPHER_CCMP:
165 os_memcpy(key, ssid->psk, 16);
169 case WPA_CIPHER_TKIP:
170 /* WPA-None uses the same Michael MIC key for both TX and RX */
171 os_memcpy(key, ssid->psk, 16 + 8);
172 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
177 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
178 "WPA-None", wpa_s->group_cipher);
182 /* TODO: should actually remember the previously used seq#, both for TX
183 * and RX from each STA.. */
185 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
186 0, 1, seq, 6, key, keylen);
190 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
192 struct wpa_supplicant *wpa_s = eloop_ctx;
193 const u8 *bssid = wpa_s->bssid;
194 if (is_zero_ether_addr(bssid))
195 bssid = wpa_s->pending_bssid;
196 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
198 wpa_blacklist_add(wpa_s, bssid);
199 wpa_sm_notify_disassoc(wpa_s->wpa);
200 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
201 wpa_s->reassociate = 1;
202 wpa_supplicant_req_scan(wpa_s, 0, 0);
207 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
208 * @wpa_s: Pointer to wpa_supplicant data
209 * @sec: Number of seconds after which to time out authentication
210 * @usec: Number of microseconds after which to time out authentication
212 * This function is used to schedule a timeout for the current authentication
215 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
218 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
219 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
222 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
223 "%d usec", sec, usec);
224 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
225 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
230 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
231 * @wpa_s: Pointer to wpa_supplicant data
233 * This function is used to cancel authentication timeout scheduled with
234 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
237 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
239 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
240 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
241 wpa_blacklist_del(wpa_s, wpa_s->bssid);
246 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
247 * @wpa_s: Pointer to wpa_supplicant data
249 * This function is used to configure EAPOL state machine based on the selected
250 * authentication mode.
252 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
254 #ifdef IEEE8021X_EAPOL
255 struct eapol_config eapol_conf;
256 struct wpa_ssid *ssid = wpa_s->current_ssid;
258 #ifdef CONFIG_IBSS_RSN
259 if (ssid->mode == IEEE80211_MODE_IBSS &&
260 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
261 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
263 * RSN IBSS authentication is per-STA and we can disable the
264 * per-BSSID EAPOL authentication.
266 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
267 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
268 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
271 #endif /* CONFIG_IBSS_RSN */
273 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
274 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
276 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
277 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
278 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
280 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
282 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
283 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
284 eapol_conf.accept_802_1x_keys = 1;
285 eapol_conf.required_keys = 0;
286 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
287 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
289 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
290 eapol_conf.required_keys |=
291 EAPOL_REQUIRE_KEY_BROADCAST;
294 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
295 eapol_conf.required_keys = 0;
298 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
299 eapol_conf.workaround = ssid->eap_workaround;
300 eapol_conf.eap_disabled =
301 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
302 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
303 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
304 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
305 #endif /* IEEE8021X_EAPOL */
310 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
311 * @wpa_s: Pointer to wpa_supplicant data
312 * @ssid: Configuration data for the network
314 * This function is used to configure WPA state machine and related parameters
315 * to a mode where WPA is not enabled. This is called as part of the
316 * authentication configuration when the selected network does not use WPA.
318 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
319 struct wpa_ssid *ssid)
323 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
324 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
325 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
326 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
328 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
329 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
330 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
331 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
332 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
333 wpa_s->group_cipher = WPA_CIPHER_NONE;
334 wpa_s->mgmt_group_cipher = 0;
336 for (i = 0; i < NUM_WEP_KEYS; i++) {
337 if (ssid->wep_key_len[i] > 5) {
338 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
339 wpa_s->group_cipher = WPA_CIPHER_WEP104;
341 } else if (ssid->wep_key_len[i] > 0) {
342 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
343 wpa_s->group_cipher = WPA_CIPHER_WEP40;
348 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
349 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
350 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
351 wpa_s->pairwise_cipher);
352 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
353 #ifdef CONFIG_IEEE80211W
354 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
355 wpa_s->mgmt_group_cipher);
356 #endif /* CONFIG_IEEE80211W */
358 pmksa_cache_clear_current(wpa_s->wpa);
362 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
364 bgscan_deinit(wpa_s);
365 scard_deinit(wpa_s->scard);
367 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
368 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
369 l2_packet_deinit(wpa_s->l2);
372 l2_packet_deinit(wpa_s->l2_br);
376 if (wpa_s->ctrl_iface) {
377 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
378 wpa_s->ctrl_iface = NULL;
380 if (wpa_s->conf != NULL) {
381 wpa_config_free(wpa_s->conf);
385 os_free(wpa_s->confname);
386 wpa_s->confname = NULL;
388 wpa_sm_set_eapol(wpa_s->wpa, NULL);
389 eapol_sm_deinit(wpa_s->eapol);
392 rsn_preauth_deinit(wpa_s->wpa);
394 pmksa_candidate_free(wpa_s->wpa);
395 wpa_sm_deinit(wpa_s->wpa);
397 wpa_blacklist_clear(wpa_s);
399 wpa_scan_results_free(wpa_s->scan_res);
400 wpa_s->scan_res = NULL;
402 wpa_supplicant_cancel_scan(wpa_s);
403 wpa_supplicant_cancel_auth_timeout(wpa_s);
405 ieee80211_sta_deinit(wpa_s);
407 wpas_wps_deinit(wpa_s);
409 wpabuf_free(wpa_s->pending_eapol_rx);
410 wpa_s->pending_eapol_rx = NULL;
412 #ifdef CONFIG_IBSS_RSN
413 ibss_rsn_deinit(wpa_s->ibss_rsn);
414 wpa_s->ibss_rsn = NULL;
415 #endif /* CONFIG_IBSS_RSN */
418 os_free(wpa_s->sme.ft_ies);
419 wpa_s->sme.ft_ies = NULL;
420 wpa_s->sme.ft_ies_len = 0;
421 #endif /* CONFIG_SME */
424 wpa_supplicant_ap_deinit(wpa_s);
425 #endif /* CONFIG_AP */
430 * wpa_clear_keys - Clear keys configured for the driver
431 * @wpa_s: Pointer to wpa_supplicant data
432 * @addr: Previously used BSSID or %NULL if not available
434 * This function clears the encryption keys that has been previously configured
437 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
439 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
441 if (wpa_s->keys_cleared) {
442 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
443 * timing issues with keys being cleared just before new keys
444 * are set or just after association or something similar. This
445 * shows up in group key handshake failing often because of the
446 * client not receiving the first encrypted packets correctly.
447 * Skipping some of the extra key clearing steps seems to help
448 * in completing group key handshake more reliably. */
449 wpa_printf(MSG_DEBUG, "No keys have been configured - "
450 "skip key clearing");
454 /* MLME-DELETEKEYS.request */
455 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
456 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
457 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
458 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
459 #ifdef CONFIG_IEEE80211W
460 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 4, 0, NULL, 0, NULL, 0);
461 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 5, 0, NULL, 0, NULL, 0);
462 #endif /* CONFIG_IEEE80211W */
464 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
466 /* MLME-SETPROTECTION.request(None) */
467 wpa_drv_mlme_setprotection(
469 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
470 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
472 wpa_s->keys_cleared = 1;
477 * wpa_supplicant_state_txt - Get the connection state name as a text string
478 * @state: State (wpa_state; WPA_*)
479 * Returns: The state name as a printable text string
481 const char * wpa_supplicant_state_txt(int state)
484 case WPA_DISCONNECTED:
485 return "DISCONNECTED";
490 case WPA_AUTHENTICATING:
491 return "AUTHENTICATING";
492 case WPA_ASSOCIATING:
493 return "ASSOCIATING";
496 case WPA_4WAY_HANDSHAKE:
497 return "4WAY_HANDSHAKE";
498 case WPA_GROUP_HANDSHAKE:
499 return "GROUP_HANDSHAKE";
509 * wpa_supplicant_set_state - Set current connection state
510 * @wpa_s: Pointer to wpa_supplicant data
511 * @state: The new connection state
513 * This function is called whenever the connection state changes, e.g.,
514 * association is completed for WPA/WPA2 4-Way Handshake is started.
516 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
518 wpa_printf(MSG_DEBUG, "State: %s -> %s",
519 wpa_supplicant_state_txt(wpa_s->wpa_state),
520 wpa_supplicant_state_txt(state));
522 if (state != WPA_SCANNING)
523 wpa_supplicant_notify_scanning(wpa_s, 0);
525 wpas_notify_state_changed(wpa_s, state, wpa_s->wpa_state);
527 if (state == WPA_COMPLETED && wpa_s->new_connection) {
528 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
529 struct wpa_ssid *ssid = wpa_s->current_ssid;
530 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
531 MACSTR " completed %s [id=%d id_str=%s]",
532 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
533 "(reauth)" : "(auth)",
534 ssid ? ssid->id : -1,
535 ssid && ssid->id_str ? ssid->id_str : "");
536 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
537 wpa_s->new_connection = 0;
538 wpa_s->reassociated_connection = 1;
539 wpa_drv_set_operstate(wpa_s, 1);
540 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
541 state == WPA_ASSOCIATED) {
542 wpa_s->new_connection = 1;
543 wpa_drv_set_operstate(wpa_s, 0);
545 wpa_s->wpa_state = state;
549 static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
552 struct wpa_global *global = eloop_ctx;
553 struct wpa_supplicant *wpa_s;
554 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
555 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
562 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
564 wpa_states old_state = wpa_s->wpa_state;
565 wpa_s->pairwise_cipher = 0;
566 wpa_s->group_cipher = 0;
567 wpa_s->mgmt_group_cipher = 0;
569 wpa_s->wpa_state = WPA_DISCONNECTED;
570 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
575 * wpa_supplicant_reload_configuration - Reload configuration data
576 * @wpa_s: Pointer to wpa_supplicant data
577 * Returns: 0 on success or -1 if configuration parsing failed
579 * This function can be used to request that the configuration data is reloaded
580 * (e.g., after configuration file change). This function is reloading
581 * configuration only for one interface, so this may need to be called multiple
582 * times if %wpa_supplicant is controlling multiple interfaces and all
583 * interfaces need reconfiguration.
585 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
587 struct wpa_config *conf;
588 struct wpa_ssid *old_ssid;
592 if (wpa_s->confname == NULL)
594 conf = wpa_config_read(wpa_s->confname);
596 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
597 "file '%s' - exiting", wpa_s->confname);
601 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
602 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
603 os_strcmp(conf->ctrl_interface,
604 wpa_s->conf->ctrl_interface) != 0);
606 if (reconf_ctrl && wpa_s->ctrl_iface) {
607 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
608 wpa_s->ctrl_iface = NULL;
611 eapol_sm_invalidate_cached_session(wpa_s->eapol);
612 old_ssid = wpa_s->current_ssid;
613 wpa_s->current_ssid = NULL;
614 if (old_ssid != wpa_s->current_ssid)
615 wpas_notify_network_changed(wpa_s);
618 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
619 * pkcs11_engine_path, pkcs11_module_path.
621 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
623 * Clear forced success to clear EAP state for next
626 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
628 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
629 wpa_sm_set_config(wpa_s->wpa, NULL);
630 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
631 rsn_preauth_deinit(wpa_s->wpa);
633 old_ap_scan = wpa_s->conf->ap_scan;
634 wpa_config_free(wpa_s->conf);
636 if (old_ap_scan != wpa_s->conf->ap_scan)
637 wpas_notify_ap_scan_changed(wpa_s);
640 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
642 wpa_supplicant_clear_status(wpa_s);
643 wpa_s->reassociate = 1;
644 wpa_supplicant_req_scan(wpa_s, 0, 0);
645 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
650 static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
653 struct wpa_global *global = eloop_ctx;
654 struct wpa_supplicant *wpa_s;
655 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
656 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
657 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
664 static wpa_cipher cipher_suite2driver(int cipher)
667 case WPA_CIPHER_NONE:
669 case WPA_CIPHER_WEP40:
671 case WPA_CIPHER_WEP104:
672 return CIPHER_WEP104;
673 case WPA_CIPHER_CCMP:
675 case WPA_CIPHER_TKIP:
682 static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
685 case WPA_KEY_MGMT_NONE:
686 return KEY_MGMT_NONE;
687 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
688 return KEY_MGMT_802_1X_NO_WPA;
689 case WPA_KEY_MGMT_IEEE8021X:
690 return KEY_MGMT_802_1X;
691 case WPA_KEY_MGMT_WPA_NONE:
692 return KEY_MGMT_WPA_NONE;
693 case WPA_KEY_MGMT_FT_IEEE8021X:
694 return KEY_MGMT_FT_802_1X;
695 case WPA_KEY_MGMT_FT_PSK:
696 return KEY_MGMT_FT_PSK;
697 case WPA_KEY_MGMT_IEEE8021X_SHA256:
698 return KEY_MGMT_802_1X_SHA256;
699 case WPA_KEY_MGMT_PSK_SHA256:
700 return KEY_MGMT_PSK_SHA256;
701 case WPA_KEY_MGMT_WPS:
703 case WPA_KEY_MGMT_PSK:
710 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
711 struct wpa_ssid *ssid,
712 struct wpa_ie_data *ie)
714 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
717 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
718 "from association info");
723 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
725 if (!(ie->group_cipher & ssid->group_cipher)) {
726 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
727 "cipher 0x%x (mask 0x%x) - reject",
728 ie->group_cipher, ssid->group_cipher);
731 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
732 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
733 "cipher 0x%x (mask 0x%x) - reject",
734 ie->pairwise_cipher, ssid->pairwise_cipher);
737 if (!(ie->key_mgmt & ssid->key_mgmt)) {
738 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
739 "management 0x%x (mask 0x%x) - reject",
740 ie->key_mgmt, ssid->key_mgmt);
744 #ifdef CONFIG_IEEE80211W
745 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
746 ssid->ieee80211w == IEEE80211W_REQUIRED) {
747 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
748 "that does not support management frame protection - "
752 #endif /* CONFIG_IEEE80211W */
759 * wpa_supplicant_set_suites - Set authentication and encryption parameters
760 * @wpa_s: Pointer to wpa_supplicant data
761 * @bss: Scan results for the selected BSS, or %NULL if not available
762 * @ssid: Configuration data for the selected network
763 * @wpa_ie: Buffer for the WPA/RSN IE
764 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
765 * used buffer length in case the functions returns success.
766 * Returns: 0 on success or -1 on failure
768 * This function is used to configure authentication and encryption parameters
769 * based on the network configuration and scan result for the selected BSS (if
772 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
773 struct wpa_scan_res *bss,
774 struct wpa_ssid *ssid,
775 u8 *wpa_ie, size_t *wpa_ie_len)
777 struct wpa_ie_data ie;
779 const u8 *bss_wpa, *bss_rsn;
782 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
783 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
785 bss_wpa = bss_rsn = NULL;
787 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
788 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
789 (ie.group_cipher & ssid->group_cipher) &&
790 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
791 (ie.key_mgmt & ssid->key_mgmt)) {
792 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
793 proto = WPA_PROTO_RSN;
794 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
795 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
796 (ie.group_cipher & ssid->group_cipher) &&
797 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
798 (ie.key_mgmt & ssid->key_mgmt)) {
799 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
800 proto = WPA_PROTO_WPA;
802 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
805 if (ssid->proto & WPA_PROTO_RSN)
806 proto = WPA_PROTO_RSN;
808 proto = WPA_PROTO_WPA;
809 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
810 os_memset(&ie, 0, sizeof(ie));
811 ie.group_cipher = ssid->group_cipher;
812 ie.pairwise_cipher = ssid->pairwise_cipher;
813 ie.key_mgmt = ssid->key_mgmt;
814 #ifdef CONFIG_IEEE80211W
815 ie.mgmt_group_cipher =
816 ssid->ieee80211w != NO_IEEE80211W ?
817 WPA_CIPHER_AES_128_CMAC : 0;
818 #endif /* CONFIG_IEEE80211W */
819 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
825 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
826 "pairwise %d key_mgmt %d proto %d",
827 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
828 #ifdef CONFIG_IEEE80211W
829 if (ssid->ieee80211w) {
830 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
831 ie.mgmt_group_cipher);
833 #endif /* CONFIG_IEEE80211W */
835 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
836 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
837 !!(ssid->proto & WPA_PROTO_RSN));
839 if (bss || !wpa_s->ap_ies_from_associnfo) {
840 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
841 bss_wpa ? 2 + bss_wpa[1] : 0) ||
842 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
843 bss_rsn ? 2 + bss_rsn[1] : 0))
847 sel = ie.group_cipher & ssid->group_cipher;
848 if (sel & WPA_CIPHER_CCMP) {
849 wpa_s->group_cipher = WPA_CIPHER_CCMP;
850 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
851 } else if (sel & WPA_CIPHER_TKIP) {
852 wpa_s->group_cipher = WPA_CIPHER_TKIP;
853 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
854 } else if (sel & WPA_CIPHER_WEP104) {
855 wpa_s->group_cipher = WPA_CIPHER_WEP104;
856 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
857 } else if (sel & WPA_CIPHER_WEP40) {
858 wpa_s->group_cipher = WPA_CIPHER_WEP40;
859 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
861 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
865 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
866 if (sel & WPA_CIPHER_CCMP) {
867 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
868 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
869 } else if (sel & WPA_CIPHER_TKIP) {
870 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
871 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
872 } else if (sel & WPA_CIPHER_NONE) {
873 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
874 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
876 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
881 sel = ie.key_mgmt & ssid->key_mgmt;
883 #ifdef CONFIG_IEEE80211R
884 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
885 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
886 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
887 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
888 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
889 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
890 #endif /* CONFIG_IEEE80211R */
891 #ifdef CONFIG_IEEE80211W
892 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
893 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
894 wpa_msg(wpa_s, MSG_DEBUG,
895 "WPA: using KEY_MGMT 802.1X with SHA256");
896 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
897 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
898 wpa_msg(wpa_s, MSG_DEBUG,
899 "WPA: using KEY_MGMT PSK with SHA256");
900 #endif /* CONFIG_IEEE80211W */
901 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
902 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
903 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
904 } else if (sel & WPA_KEY_MGMT_PSK) {
905 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
906 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
907 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
908 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
909 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
911 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
912 "key management type.");
916 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
917 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
918 wpa_s->pairwise_cipher);
919 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
921 #ifdef CONFIG_IEEE80211W
922 sel = ie.mgmt_group_cipher;
923 if (ssid->ieee80211w == NO_IEEE80211W ||
924 !(ie.capabilities & WPA_CAPABILITY_MFPC))
926 if (sel & WPA_CIPHER_AES_128_CMAC) {
927 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
928 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
931 wpa_s->mgmt_group_cipher = 0;
932 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
934 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
935 wpa_s->mgmt_group_cipher);
936 #endif /* CONFIG_IEEE80211W */
938 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
939 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
944 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
945 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
947 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
954 * wpa_supplicant_associate - Request association
955 * @wpa_s: Pointer to wpa_supplicant data
956 * @bss: Scan results for the selected BSS, or %NULL if not available
957 * @ssid: Configuration data for the selected network
959 * This function is used to request %wpa_supplicant to associate with a BSS.
961 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
962 struct wpa_scan_res *bss, struct wpa_ssid *ssid)
966 int use_crypt, ret, i, bssid_changed;
967 int algs = AUTH_ALG_OPEN_SYSTEM;
968 wpa_cipher cipher_pairwise, cipher_group;
969 struct wpa_driver_associate_params params;
970 int wep_keys_set = 0;
971 struct wpa_driver_capa capa;
972 int assoc_failed = 0;
973 struct wpa_ssid *old_ssid;
975 if (ssid->mode == IEEE80211_MODE_AP) {
977 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
978 wpa_printf(MSG_INFO, "Driver does not support AP "
982 wpa_supplicant_create_ap(wpa_s, ssid);
983 #else /* CONFIG_AP */
984 wpa_printf(MSG_ERROR, "AP mode support not included in the "
986 #endif /* CONFIG_AP */
990 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
991 ssid->mode == IEEE80211_MODE_INFRA) {
992 sme_authenticate(wpa_s, bss, ssid);
996 wpa_s->reassociate = 0;
998 #ifdef CONFIG_IEEE80211R
1000 #endif /* CONFIG_IEEE80211R */
1001 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1002 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1003 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1004 ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
1005 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1006 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1007 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1009 wpas_notify_bssid_changed(wpa_s);
1010 #ifdef CONFIG_IEEE80211R
1011 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1012 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1014 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
1016 /* Prepare for the next transition */
1017 wpa_ft_prepare_auth_request(wpa_s->wpa);
1019 #endif /* CONFIG_IEEE80211R */
1021 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1022 wpa_s->conf->ap_scan == 2 &&
1023 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1024 /* Use ap_scan==1 style network selection to find the network
1026 wpa_s->scan_req = 2;
1027 wpa_s->reassociate = 1;
1028 wpa_supplicant_req_scan(wpa_s, 0, 0);
1030 #endif /* CONFIG_WPS */
1032 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1033 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1034 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1036 wpa_supplicant_cancel_scan(wpa_s);
1038 /* Starting new association, so clear the possibly used WPA IE from the
1039 * previous association. */
1040 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1042 #ifdef IEEE8021X_EAPOL
1043 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1045 if (ssid->non_leap == 0)
1046 algs = AUTH_ALG_LEAP;
1048 algs |= AUTH_ALG_LEAP;
1051 #endif /* IEEE8021X_EAPOL */
1052 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1053 if (ssid->auth_alg) {
1055 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
1056 algs |= AUTH_ALG_OPEN_SYSTEM;
1057 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
1058 algs |= AUTH_ALG_SHARED_KEY;
1059 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
1060 algs |= AUTH_ALG_LEAP;
1061 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1065 if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1066 wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
1067 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1068 WPA_KEY_MGMT_FT_IEEE8021X |
1069 WPA_KEY_MGMT_FT_PSK |
1070 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1071 WPA_KEY_MGMT_PSK_SHA256))) {
1072 int try_opportunistic;
1073 try_opportunistic = ssid->proactive_key_caching &&
1074 (ssid->proto & WPA_PROTO_RSN);
1075 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1076 wpa_s->current_ssid,
1077 try_opportunistic) == 0)
1078 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1079 wpa_ie_len = sizeof(wpa_ie);
1080 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1081 wpa_ie, &wpa_ie_len)) {
1082 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1083 "management and encryption suites");
1086 } else if (ssid->key_mgmt &
1087 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1088 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1089 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1090 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1091 wpa_ie_len = sizeof(wpa_ie);
1092 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1093 wpa_ie, &wpa_ie_len)) {
1094 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1095 "management and encryption suites (no scan "
1100 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1101 struct wpabuf *wps_ie;
1102 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1103 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1104 wpa_ie_len = wpabuf_len(wps_ie);
1105 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1108 wpabuf_free(wps_ie);
1109 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1110 #endif /* CONFIG_WPS */
1112 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1116 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1118 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1119 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1120 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1121 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1122 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1124 if (wpa_set_wep_keys(wpa_s, ssid)) {
1129 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1132 #ifdef IEEE8021X_EAPOL
1133 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1134 if ((ssid->eapol_flags &
1135 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1136 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1140 /* Assume that dynamic WEP-104 keys will be used and
1141 * set cipher suites in order for drivers to expect
1143 cipher_pairwise = cipher_group = CIPHER_WEP104;
1146 #endif /* IEEE8021X_EAPOL */
1148 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1149 /* Set the key before (and later after) association */
1150 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1153 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1154 os_memset(¶ms, 0, sizeof(params));
1156 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1157 params.bssid = bss->bssid;
1158 params.ssid = ie ? ie + 2 : (u8 *) "";
1159 params.ssid_len = ie ? ie[1] : 0;
1160 params.freq = bss->freq;
1162 params.ssid = ssid->ssid;
1163 params.ssid_len = ssid->ssid_len;
1165 if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1166 params.freq = ssid->frequency; /* Initial channel for IBSS */
1167 params.wpa_ie = wpa_ie;
1168 params.wpa_ie_len = wpa_ie_len;
1169 params.pairwise_suite = cipher_pairwise;
1170 params.group_suite = cipher_group;
1171 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1172 params.auth_alg = algs;
1173 params.mode = ssid->mode;
1174 for (i = 0; i < NUM_WEP_KEYS; i++) {
1175 if (ssid->wep_key_len[i])
1176 params.wep_key[i] = ssid->wep_key[i];
1177 params.wep_key_len[i] = ssid->wep_key_len[i];
1179 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1181 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1182 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1183 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1184 params.passphrase = ssid->passphrase;
1186 params.psk = ssid->psk;
1189 params.drop_unencrypted = use_crypt;
1191 #ifdef CONFIG_IEEE80211W
1192 switch (ssid->ieee80211w) {
1194 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1196 case IEEE80211W_OPTIONAL:
1197 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1199 case IEEE80211W_REQUIRED:
1200 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1203 if (ssid->ieee80211w != NO_IEEE80211W && bss) {
1204 const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1205 struct wpa_ie_data ie;
1206 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1208 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1209 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1211 params.mgmt_frame_protection =
1212 MGMT_FRAME_PROTECTION_REQUIRED;
1215 #endif /* CONFIG_IEEE80211W */
1217 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1218 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1220 ret = wpa_drv_associate(wpa_s, ¶ms);
1222 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1224 /* try to continue anyway; new association will be tried again
1229 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1230 /* Set the key after the association just in case association
1231 * cleared the previously configured key. */
1232 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1233 /* No need to timeout authentication since there is no key
1235 wpa_supplicant_cancel_auth_timeout(wpa_s);
1236 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1237 #ifdef CONFIG_IBSS_RSN
1238 } else if (ssid->mode == IEEE80211_MODE_IBSS &&
1239 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1240 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1241 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1243 * RSN IBSS authentication is per-STA and we can disable the
1244 * per-BSSID authentication.
1246 wpa_supplicant_cancel_auth_timeout(wpa_s);
1247 #endif /* CONFIG_IBSS_RSN */
1249 /* Timeout for IEEE 802.11 authentication and association */
1253 /* give IBSS a bit more time */
1254 timeout = ssid->mode ? 10 : 5;
1255 } else if (wpa_s->conf->ap_scan == 1) {
1256 /* give IBSS a bit more time */
1257 timeout = ssid->mode ? 20 : 10;
1259 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1262 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1263 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1264 /* Set static WEP keys again */
1265 wpa_set_wep_keys(wpa_s, ssid);
1268 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1270 * Do not allow EAP session resumption between different
1271 * network configurations.
1273 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1275 old_ssid = wpa_s->current_ssid;
1276 wpa_s->current_ssid = ssid;
1277 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1278 wpa_supplicant_initiate_eapol(wpa_s);
1279 if (old_ssid != wpa_s->current_ssid)
1280 wpas_notify_network_changed(wpa_s);
1285 * wpa_supplicant_disassociate - Disassociate the current connection
1286 * @wpa_s: Pointer to wpa_supplicant data
1287 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1289 * This function is used to request %wpa_supplicant to disassociate with the
1292 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1295 struct wpa_ssid *old_ssid;
1298 if (!is_zero_ether_addr(wpa_s->bssid)) {
1299 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1300 ieee80211_sta_disassociate(wpa_s, reason_code);
1302 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1303 addr = wpa_s->bssid;
1305 wpa_clear_keys(wpa_s, addr);
1306 wpa_supplicant_mark_disassoc(wpa_s);
1307 old_ssid = wpa_s->current_ssid;
1308 wpa_s->current_ssid = NULL;
1309 wpa_sm_set_config(wpa_s->wpa, NULL);
1310 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1311 if (old_ssid != wpa_s->current_ssid)
1312 wpas_notify_network_changed(wpa_s);
1317 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1318 * @wpa_s: Pointer to wpa_supplicant data
1319 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1321 * This function is used to request %wpa_supplicant to deauthenticate from the
1324 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1327 struct wpa_ssid *old_ssid;
1330 if (!is_zero_ether_addr(wpa_s->bssid)) {
1331 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1332 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1334 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1336 addr = wpa_s->bssid;
1338 wpa_clear_keys(wpa_s, addr);
1339 wpa_supplicant_mark_disassoc(wpa_s);
1340 old_ssid = wpa_s->current_ssid;
1341 wpa_s->current_ssid = NULL;
1342 wpa_sm_set_config(wpa_s->wpa, NULL);
1343 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1344 if (old_ssid != wpa_s->current_ssid)
1345 wpas_notify_network_changed(wpa_s);
1350 * wpa_supplicant_enable_network - Mark a configured network as enabled
1351 * @wpa_s: wpa_supplicant structure for a network interface
1352 * @ssid: wpa_ssid structure for a configured network or %NULL
1354 * Enables the specified network or all networks if no network specified.
1356 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1357 struct wpa_ssid *ssid)
1359 struct wpa_ssid *other_ssid;
1363 other_ssid = wpa_s->conf->ssid;
1364 while (other_ssid) {
1365 if (other_ssid == wpa_s->current_ssid &&
1366 other_ssid->disabled)
1367 wpa_s->reassociate = 1;
1369 was_disabled = other_ssid->disabled;
1371 other_ssid->disabled = 0;
1373 if (was_disabled != other_ssid->disabled)
1374 wpas_notify_network_enabled_changed(
1377 other_ssid = other_ssid->next;
1379 if (wpa_s->reassociate)
1380 wpa_supplicant_req_scan(wpa_s, 0, 0);
1381 } else if (wpa_s->current_ssid == NULL && ssid->disabled) {
1383 * Try to reassociate since there is no current configuration
1384 * and a new network was made available.
1386 wpa_s->reassociate = 1;
1387 wpa_supplicant_req_scan(wpa_s, 0, 0);
1389 was_disabled = ssid->disabled;
1393 if (was_disabled != ssid->disabled)
1394 wpas_notify_network_enabled_changed(wpa_s, ssid);
1400 * wpa_supplicant_disable_network - Mark a configured network as disabled
1401 * @wpa_s: wpa_supplicant structure for a network interface
1402 * @ssid: wpa_ssid structure for a configured network or %NULL
1404 * Disables the specified network or all networks if no network specified.
1406 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1407 struct wpa_ssid *ssid)
1409 struct wpa_ssid *other_ssid;
1413 other_ssid = wpa_s->conf->ssid;
1414 while (other_ssid) {
1415 was_disabled = other_ssid->disabled;
1417 other_ssid->disabled = 1;
1419 if (was_disabled != other_ssid->disabled)
1420 wpas_notify_network_enabled_changed(
1423 other_ssid = other_ssid->next;
1425 if (wpa_s->current_ssid)
1426 wpa_supplicant_disassociate(
1427 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1429 if (ssid == wpa_s->current_ssid)
1430 wpa_supplicant_disassociate(
1431 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1433 was_disabled = ssid->disabled;
1437 if (was_disabled != ssid->disabled)
1438 wpas_notify_network_enabled_changed(wpa_s, ssid);
1444 * wpa_supplicant_select_network - Attempt association with a network
1445 * @wpa_s: wpa_supplicant structure for a network interface
1446 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1448 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1449 struct wpa_ssid *ssid)
1452 struct wpa_ssid *other_ssid;
1454 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1455 wpa_supplicant_disassociate(
1456 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1459 * Mark all other networks disabled or mark all networks enabled if no
1460 * network specified.
1462 other_ssid = wpa_s->conf->ssid;
1463 while (other_ssid) {
1464 int was_disabled = other_ssid->disabled;
1466 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1468 if (was_disabled != other_ssid->disabled)
1469 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1471 other_ssid = other_ssid->next;
1473 wpa_s->disconnected = 0;
1474 wpa_s->reassociate = 1;
1475 wpa_supplicant_req_scan(wpa_s, 0, 0);
1478 wpas_notify_network_selected(wpa_s, ssid);
1483 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1484 * @wpa_s: wpa_supplicant structure for a network interface
1485 * @ap_scan: AP scan mode
1486 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1489 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1494 if (ap_scan < 0 || ap_scan > 2)
1497 old_ap_scan = wpa_s->conf->ap_scan;
1498 wpa_s->conf->ap_scan = ap_scan;
1500 if (old_ap_scan != wpa_s->conf->ap_scan)
1501 wpas_notify_ap_scan_changed(wpa_s);
1508 * wpa_supplicant_set_debug_params - Set global debug params
1509 * @global: wpa_global structure
1510 * @debug_level: debug level
1511 * @debug_timestamp: determines if show timestamp in debug data
1512 * @debug_show_keys: determines if show keys in debug data
1513 * Returns: 0 if succeed or -1 if debug_level has wrong value
1515 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1516 int debug_timestamp, int debug_show_keys)
1519 int old_level, old_timestamp, old_show_keys;
1521 /* check for allowed debuglevels */
1522 if (debug_level != MSG_MSGDUMP &&
1523 debug_level != MSG_DEBUG &&
1524 debug_level != MSG_INFO &&
1525 debug_level != MSG_WARNING &&
1526 debug_level != MSG_ERROR)
1529 old_level = wpa_debug_level;
1530 old_timestamp = wpa_debug_timestamp;
1531 old_show_keys = wpa_debug_show_keys;
1533 wpa_debug_level = debug_level;
1534 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1535 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1537 if (wpa_debug_level != old_level ||
1538 wpa_debug_timestamp != old_timestamp ||
1539 wpa_debug_show_keys != old_show_keys)
1540 wpas_notify_debug_params_changed(global);
1546 static void notify_bss_changes(struct wpa_supplicant *wpa_s,
1547 u8 (*prev_bssids)[ETH_ALEN], int prev_num,
1548 struct wpa_scan_results *new)
1552 new_num = new != NULL ? new->num : 0;
1553 if (prev_bssids == NULL)
1556 for (i = 0; i < prev_num; i++) {
1557 for (j = 0; j < new_num; j++) {
1558 if (!os_memcmp(prev_bssids[i], new->res[j]->bssid,
1563 wpas_notify_bss_removed(wpa_s, prev_bssids[i]);
1565 for (i = 0; i < new_num; i++) {
1566 for (j = 0; j < prev_num; j++) {
1567 if (!os_memcmp(new->res[i]->bssid, prev_bssids[j],
1572 wpas_notify_bss_added(wpa_s, new->res[i]->bssid);
1578 * wpa_supplicant_get_scan_results - Get scan results
1579 * @wpa_s: Pointer to wpa_supplicant data
1580 * Returns: 0 on success, -1 on failure
1582 * This function is request the current scan results from the driver and stores
1583 * a local copy of the results in wpa_s->scan_res.
1585 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1587 int ret, i, prev_scan_res_num;
1588 u8 (*prev_scan_bssids)[ETH_ALEN];
1590 prev_scan_res_num = wpa_s->scan_res ? wpa_s->scan_res->num : 0;
1591 prev_scan_bssids = os_malloc(prev_scan_res_num * ETH_ALEN);
1593 if (prev_scan_bssids) {
1594 for (i = 0; i < prev_scan_res_num; i++) {
1595 os_memcpy(prev_scan_bssids[i],
1596 wpa_s->scan_res->res[i]->bssid, ETH_ALEN);
1599 wpa_printf(MSG_WARNING, "Not enough memory for old scan "
1601 prev_scan_res_num = 0;
1604 wpa_scan_results_free(wpa_s->scan_res);
1605 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1606 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1608 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1609 if (wpa_s->scan_res == NULL) {
1610 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1614 wpa_scan_sort_results(wpa_s->scan_res);
1617 notify_bss_changes(wpa_s, prev_scan_bssids, prev_scan_res_num,
1619 os_free(prev_scan_bssids);
1626 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1627 * @wpa_s: Pointer to wpa_supplicant data
1628 * Returns: A pointer to the current network structure or %NULL on failure
1630 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1632 struct wpa_ssid *entry;
1633 u8 ssid[MAX_SSID_LEN];
1639 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1640 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1641 wpa_printf(MSG_WARNING, "Could not read SSID from "
1646 res = wpa_drv_get_ssid(wpa_s, ssid);
1648 wpa_printf(MSG_WARNING, "Could not read SSID from "
1655 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1656 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1657 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1658 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1662 wired = wpa_s->conf->ap_scan == 0 &&
1663 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1665 entry = wpa_s->conf->ssid;
1667 if (!entry->disabled &&
1668 ((ssid_len == entry->ssid_len &&
1669 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1670 (!entry->bssid_set ||
1671 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1674 if (!entry->disabled &&
1675 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1676 (entry->ssid == NULL || entry->ssid_len == 0) &&
1677 (!entry->bssid_set ||
1678 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1680 #endif /* CONFIG_WPS */
1681 entry = entry->next;
1688 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1698 if (wpa_drivers[0] == NULL) {
1699 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1705 /* default to first driver in the list */
1706 wpa_s->driver = wpa_drivers[0];
1707 wpa_s->global_drv_priv = wpa_s->global->drv_priv[0];
1711 pos = os_strchr(name, ',');
1715 len = os_strlen(name);
1716 for (i = 0; wpa_drivers[i]; i++) {
1717 if (os_strlen(wpa_drivers[i]->name) == len &&
1718 os_strncmp(name, wpa_drivers[i]->name, len) ==
1720 wpa_s->driver = wpa_drivers[i];
1721 wpa_s->global_drv_priv = wpa_s->global->drv_priv[i];
1726 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1731 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1732 const u8 *buf, size_t len)
1734 struct wpa_supplicant *wpa_s = ctx;
1736 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1737 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1739 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1741 * There is possible race condition between receiving the
1742 * association event and the EAPOL frame since they are coming
1743 * through different paths from the driver. In order to avoid
1744 * issues in trying to process the EAPOL frame before receiving
1745 * association information, lets queue it for processing until
1746 * the association event is received.
1748 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of "
1749 "received EAPOL frame");
1750 wpabuf_free(wpa_s->pending_eapol_rx);
1751 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1752 if (wpa_s->pending_eapol_rx) {
1753 os_get_time(&wpa_s->pending_eapol_rx_time);
1754 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1761 if (wpa_s->ap_iface) {
1762 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1765 #endif /* CONFIG_AP */
1767 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1768 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1769 "no key management is configured");
1773 if (wpa_s->eapol_received == 0 &&
1774 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1775 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1776 wpa_s->wpa_state != WPA_COMPLETED) &&
1777 (wpa_s->current_ssid == NULL ||
1778 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
1779 /* Timeout for completing IEEE 802.1X and WPA authentication */
1780 wpa_supplicant_req_auth_timeout(
1782 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1783 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1784 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1787 wpa_s->eapol_received++;
1789 if (wpa_s->countermeasures) {
1790 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1795 #ifdef CONFIG_IBSS_RSN
1796 if (wpa_s->current_ssid &&
1797 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS) {
1798 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1801 #endif /* CONFIG_IBSS_RSN */
1803 /* Source address of the incoming EAPOL frame could be compared to the
1804 * current BSSID. However, it is possible that a centralized
1805 * Authenticator could be using another MAC address than the BSSID of
1806 * an AP, so just allow any address to be used for now. The replies are
1807 * still sent to the current BSSID (if available), though. */
1809 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1810 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1811 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1813 wpa_drv_poll(wpa_s);
1814 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1815 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1816 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1818 * Set portValid = TRUE here since we are going to skip 4-way
1819 * handshake processing which would normally set portValid. We
1820 * need this to allow the EAPOL state machines to be completed
1821 * without going through EAPOL-Key handshake.
1823 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1828 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1829 struct ieee80211_rx_status *rx_status)
1831 struct wpa_supplicant *wpa_s = ctx;
1832 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1837 * wpa_supplicant_driver_init - Initialize driver interface parameters
1838 * @wpa_s: Pointer to wpa_supplicant data
1839 * Returns: 0 on success, -1 on failure
1841 * This function is called to initialize driver interface parameters.
1842 * wpa_drv_init() must have been called before this function to initialize the
1845 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1847 static int interface_count = 0;
1849 if (wpa_s->driver->send_eapol) {
1850 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1852 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1854 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1855 wpa_drv_get_mac_addr(wpa_s),
1857 wpa_supplicant_rx_eapol, wpa_s, 0);
1858 if (wpa_s->l2 == NULL)
1862 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1863 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1867 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1868 MAC2STR(wpa_s->own_addr));
1870 if (wpa_s->bridge_ifname[0]) {
1871 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1872 " '%s'", wpa_s->bridge_ifname);
1873 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1876 wpa_supplicant_rx_eapol, wpa_s,
1878 if (wpa_s->l2_br == NULL) {
1879 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1880 "connection for the bridge interface '%s'",
1881 wpa_s->bridge_ifname);
1886 wpa_clear_keys(wpa_s, NULL);
1888 /* Make sure that TKIP countermeasures are not left enabled (could
1889 * happen if wpa_supplicant is killed during countermeasures. */
1890 wpa_drv_set_countermeasures(wpa_s, 0);
1892 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1893 wpa_drv_flush_pmkid(wpa_s);
1895 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1896 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1903 static int wpa_supplicant_daemon(const char *pid_file)
1905 wpa_printf(MSG_DEBUG, "Daemonize..");
1906 return os_daemonize(pid_file);
1910 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1912 struct wpa_supplicant *wpa_s;
1914 wpa_s = os_zalloc(sizeof(*wpa_s));
1917 wpa_s->scan_req = 1;
1923 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1924 struct wpa_interface *iface)
1926 const char *ifname, *driver;
1927 struct wpa_driver_capa capa;
1929 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1930 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1931 iface->confname ? iface->confname : "N/A",
1932 iface->driver ? iface->driver : "default",
1933 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1934 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1936 if (iface->confname) {
1937 #ifdef CONFIG_BACKEND_FILE
1938 wpa_s->confname = os_rel2abs_path(iface->confname);
1939 if (wpa_s->confname == NULL) {
1940 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1941 "for configuration file '%s'.",
1945 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1946 iface->confname, wpa_s->confname);
1947 #else /* CONFIG_BACKEND_FILE */
1948 wpa_s->confname = os_strdup(iface->confname);
1949 #endif /* CONFIG_BACKEND_FILE */
1950 wpa_s->conf = wpa_config_read(wpa_s->confname);
1951 if (wpa_s->conf == NULL) {
1952 wpa_printf(MSG_ERROR, "Failed to read or parse "
1953 "configuration '%s'.", wpa_s->confname);
1958 * Override ctrl_interface and driver_param if set on command
1961 if (iface->ctrl_interface) {
1962 os_free(wpa_s->conf->ctrl_interface);
1963 wpa_s->conf->ctrl_interface =
1964 os_strdup(iface->ctrl_interface);
1967 if (iface->driver_param) {
1968 os_free(wpa_s->conf->driver_param);
1969 wpa_s->conf->driver_param =
1970 os_strdup(iface->driver_param);
1973 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1974 iface->driver_param);
1976 if (wpa_s->conf == NULL) {
1977 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1981 if (iface->ifname == NULL) {
1982 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1985 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1986 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1990 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1992 if (iface->bridge_ifname) {
1993 if (os_strlen(iface->bridge_ifname) >=
1994 sizeof(wpa_s->bridge_ifname)) {
1995 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1996 "name '%s'.", iface->bridge_ifname);
1999 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2000 sizeof(wpa_s->bridge_ifname));
2003 /* RSNA Supplicant Key Management - INITIALIZE */
2004 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2005 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2007 /* Initialize driver interface and register driver event handler before
2008 * L2 receive handler so that association events are processed before
2009 * EAPOL-Key packets if both become available for the same select()
2011 driver = iface->driver;
2013 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2016 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2017 if (wpa_s->drv_priv == NULL) {
2019 pos = os_strchr(driver, ',');
2021 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
2022 "interface - try next driver wrapper");
2026 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
2029 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2030 wpa_printf(MSG_ERROR, "Driver interface rejected "
2031 "driver_param '%s'", wpa_s->conf->driver_param);
2035 ifname = wpa_drv_get_ifname(wpa_s);
2036 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2037 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
2038 "name with '%s'", ifname);
2039 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2042 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2045 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2046 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2048 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2050 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2051 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2052 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2053 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2054 "dot11RSNAConfigPMKLifetime");
2058 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2059 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2060 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2061 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2062 "dot11RSNAConfigPMKReauthThreshold");
2066 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2067 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2068 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2069 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2070 "dot11RSNAConfigSATimeout");
2074 if (wpa_supplicant_driver_init(wpa_s) < 0)
2077 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2078 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2079 wpa_printf(MSG_DEBUG, "Failed to set country");
2083 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2085 if (wpas_wps_init(wpa_s))
2088 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2090 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2092 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2093 if (wpa_s->ctrl_iface == NULL) {
2094 wpa_printf(MSG_ERROR,
2095 "Failed to initialize control interface '%s'.\n"
2096 "You may have another wpa_supplicant process "
2097 "already running or the file was\n"
2098 "left by an unclean termination of wpa_supplicant "
2099 "in which case you will need\n"
2100 "to manually remove this file before starting "
2101 "wpa_supplicant again.\n",
2102 wpa_s->conf->ctrl_interface);
2106 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2107 wpa_s->drv_flags = capa.flags;
2108 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2109 if (ieee80211_sta_init(wpa_s))
2112 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2115 #ifdef CONFIG_IBSS_RSN
2116 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2117 if (!wpa_s->ibss_rsn) {
2118 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
2121 #endif /* CONFIG_IBSS_RSN */
2127 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
2129 if (wpa_s->drv_priv) {
2130 wpa_supplicant_deauthenticate(wpa_s,
2131 WLAN_REASON_DEAUTH_LEAVING);
2133 wpa_drv_set_countermeasures(wpa_s, 0);
2134 wpa_clear_keys(wpa_s, NULL);
2137 wpas_notify_iface_removed(wpa_s);
2139 wpa_supplicant_cleanup(wpa_s);
2141 if (wpa_s->drv_priv)
2142 wpa_drv_deinit(wpa_s);
2147 * wpa_supplicant_add_iface - Add a new network interface
2148 * @global: Pointer to global data from wpa_supplicant_init()
2149 * @iface: Interface configuration options
2150 * Returns: Pointer to the created interface or %NULL on failure
2152 * This function is used to add new network interfaces for %wpa_supplicant.
2153 * This can be called before wpa_supplicant_run() to add interfaces before the
2154 * main event loop has been started. In addition, new interfaces can be added
2155 * dynamically while %wpa_supplicant is already running. This could happen,
2156 * e.g., when a hotplug network adapter is inserted.
2158 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2159 struct wpa_interface *iface)
2161 struct wpa_supplicant *wpa_s;
2162 struct wpa_interface t_iface;
2164 if (global == NULL || iface == NULL)
2167 wpa_s = wpa_supplicant_alloc();
2171 wpa_s->global = global;
2174 if (global->params.override_driver) {
2175 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2177 iface->driver, global->params.override_driver);
2178 t_iface.driver = global->params.override_driver;
2180 if (global->params.override_ctrl_interface) {
2181 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2182 "ctrl_interface ('%s' -> '%s')",
2183 iface->ctrl_interface,
2184 global->params.override_ctrl_interface);
2185 t_iface.ctrl_interface =
2186 global->params.override_ctrl_interface;
2188 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2189 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2191 wpa_supplicant_deinit_iface(wpa_s);
2196 /* Notify the control interfaces about new iface */
2197 if (wpas_notify_iface_added(wpa_s)) {
2198 wpa_supplicant_deinit_iface(wpa_s);
2203 wpa_s->next = global->ifaces;
2204 global->ifaces = wpa_s;
2206 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2213 * wpa_supplicant_remove_iface - Remove a network interface
2214 * @global: Pointer to global data from wpa_supplicant_init()
2215 * @wpa_s: Pointer to the network interface to be removed
2216 * Returns: 0 if interface was removed, -1 if interface was not found
2218 * This function can be used to dynamically remove network interfaces from
2219 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2220 * addition, this function is used to remove all remaining interfaces when
2221 * %wpa_supplicant is terminated.
2223 int wpa_supplicant_remove_iface(struct wpa_global *global,
2224 struct wpa_supplicant *wpa_s)
2226 struct wpa_supplicant *prev;
2228 /* Remove interface from the global list of interfaces */
2229 prev = global->ifaces;
2230 if (prev == wpa_s) {
2231 global->ifaces = wpa_s->next;
2233 while (prev && prev->next != wpa_s)
2237 prev->next = wpa_s->next;
2240 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2242 wpa_supplicant_deinit_iface(wpa_s);
2250 * wpa_supplicant_get_iface - Get a new network interface
2251 * @global: Pointer to global data from wpa_supplicant_init()
2252 * @ifname: Interface name
2253 * Returns: Pointer to the interface or %NULL if not found
2255 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2258 struct wpa_supplicant *wpa_s;
2260 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2261 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2269 * wpa_supplicant_init - Initialize %wpa_supplicant
2270 * @params: Parameters for %wpa_supplicant
2271 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2273 * This function is used to initialize %wpa_supplicant. After successful
2274 * initialization, the returned data pointer can be used to add and remove
2275 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2277 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2279 struct wpa_global *global;
2285 wpa_debug_open_file(params->wpa_debug_file_path);
2286 if (params->wpa_debug_syslog)
2287 wpa_debug_open_syslog();
2289 ret = eap_register_methods();
2291 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2293 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2294 "the same EAP type.");
2298 global = os_zalloc(sizeof(*global));
2301 global->params.daemonize = params->daemonize;
2302 global->params.wait_for_monitor = params->wait_for_monitor;
2303 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2304 if (params->pid_file)
2305 global->params.pid_file = os_strdup(params->pid_file);
2306 if (params->ctrl_interface)
2307 global->params.ctrl_interface =
2308 os_strdup(params->ctrl_interface);
2309 if (params->override_driver)
2310 global->params.override_driver =
2311 os_strdup(params->override_driver);
2312 if (params->override_ctrl_interface)
2313 global->params.override_ctrl_interface =
2314 os_strdup(params->override_ctrl_interface);
2315 wpa_debug_level = global->params.wpa_debug_level =
2316 params->wpa_debug_level;
2317 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2318 params->wpa_debug_show_keys;
2319 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2320 params->wpa_debug_timestamp;
2322 if (eloop_init(global)) {
2323 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2324 wpa_supplicant_deinit(global);
2328 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2329 if (global->ctrl_iface == NULL) {
2330 wpa_supplicant_deinit(global);
2334 if (wpas_notify_supplicant_initialized(global)) {
2335 wpa_supplicant_deinit(global);
2339 for (i = 0; wpa_drivers[i]; i++)
2340 global->drv_count++;
2341 if (global->drv_count == 0) {
2342 wpa_printf(MSG_ERROR, "No drivers enabled");
2343 wpa_supplicant_deinit(global);
2346 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2347 if (global->drv_priv == NULL) {
2348 wpa_supplicant_deinit(global);
2351 for (i = 0; wpa_drivers[i]; i++) {
2352 if (!wpa_drivers[i]->global_init)
2354 global->drv_priv[i] = wpa_drivers[i]->global_init();
2355 if (global->drv_priv[i] == NULL) {
2356 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2357 "'%s'", wpa_drivers[i]->name);
2358 wpa_supplicant_deinit(global);
2368 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2369 * @global: Pointer to global data from wpa_supplicant_init()
2370 * Returns: 0 after successful event loop run, -1 on failure
2372 * This function starts the main event loop and continues running as long as
2373 * there are any remaining events. In most cases, this function is running as
2374 * long as the %wpa_supplicant process in still in use.
2376 int wpa_supplicant_run(struct wpa_global *global)
2378 struct wpa_supplicant *wpa_s;
2380 if (global->params.daemonize &&
2381 wpa_supplicant_daemon(global->params.pid_file))
2384 if (global->params.wait_for_monitor) {
2385 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2386 if (wpa_s->ctrl_iface)
2387 wpa_supplicant_ctrl_iface_wait(
2391 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2392 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2401 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2402 * @global: Pointer to global data from wpa_supplicant_init()
2404 * This function is called to deinitialize %wpa_supplicant and to free all
2405 * allocated resources. Remaining network interfaces will also be removed.
2407 void wpa_supplicant_deinit(struct wpa_global *global)
2414 while (global->ifaces)
2415 wpa_supplicant_remove_iface(global, global->ifaces);
2417 if (global->ctrl_iface)
2418 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2420 wpas_notify_supplicant_deinitialized(global);
2422 eap_peer_unregister_methods();
2424 eap_server_unregister_methods();
2425 #endif /* CONFIG_AP */
2427 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2428 if (!global->drv_priv[i])
2430 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2432 os_free(global->drv_priv);
2436 if (global->params.pid_file) {
2437 os_daemonize_terminate(global->params.pid_file);
2438 os_free(global->params.pid_file);
2440 os_free(global->params.ctrl_interface);
2441 os_free(global->params.override_driver);
2442 os_free(global->params.override_ctrl_interface);
2445 wpa_debug_close_syslog();
2446 wpa_debug_close_file();