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"
28 #include "l2_packet/l2_packet.h"
29 #include "wpa_supplicant_i.h"
31 #include "ctrl_iface.h"
32 #include "pcsc_funcs.h"
35 #include "pmksa_cache.h"
38 #include "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 == 2) {
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 sme_authenticate(wpa_s, bss, ssid);
995 wpa_s->reassociate = 0;
997 #ifdef CONFIG_IEEE80211R
999 #endif /* CONFIG_IEEE80211R */
1000 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1001 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1002 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
1003 ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
1004 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1005 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1006 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
1008 wpas_notify_bssid_changed(wpa_s);
1009 #ifdef CONFIG_IEEE80211R
1010 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
1011 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1013 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
1015 /* Prepare for the next transition */
1016 wpa_ft_prepare_auth_request(wpa_s->wpa);
1018 #endif /* CONFIG_IEEE80211R */
1020 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1021 wpa_s->conf->ap_scan == 2 &&
1022 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1023 /* Use ap_scan==1 style network selection to find the network
1025 wpa_s->scan_req = 2;
1026 wpa_s->reassociate = 1;
1027 wpa_supplicant_req_scan(wpa_s, 0, 0);
1029 #endif /* CONFIG_WPS */
1031 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1032 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1033 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1035 wpa_supplicant_cancel_scan(wpa_s);
1037 /* Starting new association, so clear the possibly used WPA IE from the
1038 * previous association. */
1039 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1041 if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
1042 wpa_printf(MSG_WARNING, "Failed to set operating mode");
1046 #ifdef IEEE8021X_EAPOL
1047 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1049 if (ssid->non_leap == 0)
1050 algs = AUTH_ALG_LEAP;
1052 algs |= AUTH_ALG_LEAP;
1055 #endif /* IEEE8021X_EAPOL */
1056 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1057 if (ssid->auth_alg) {
1059 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
1060 algs |= AUTH_ALG_OPEN_SYSTEM;
1061 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
1062 algs |= AUTH_ALG_SHARED_KEY;
1063 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
1064 algs |= AUTH_ALG_LEAP;
1065 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1068 wpa_drv_set_auth_alg(wpa_s, algs);
1070 if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1071 wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
1072 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1073 WPA_KEY_MGMT_FT_IEEE8021X |
1074 WPA_KEY_MGMT_FT_PSK |
1075 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1076 WPA_KEY_MGMT_PSK_SHA256))) {
1077 int try_opportunistic;
1078 try_opportunistic = ssid->proactive_key_caching &&
1079 (ssid->proto & WPA_PROTO_RSN);
1080 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1081 wpa_s->current_ssid,
1082 try_opportunistic) == 0)
1083 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1084 wpa_ie_len = sizeof(wpa_ie);
1085 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1086 wpa_ie, &wpa_ie_len)) {
1087 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1088 "management and encryption suites");
1091 } else if (ssid->key_mgmt &
1092 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1093 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1094 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1095 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1096 wpa_ie_len = sizeof(wpa_ie);
1097 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1098 wpa_ie, &wpa_ie_len)) {
1099 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1100 "management and encryption suites (no scan "
1105 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1106 struct wpabuf *wps_ie;
1107 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1108 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1109 wpa_ie_len = wpabuf_len(wps_ie);
1110 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1113 wpabuf_free(wps_ie);
1114 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1115 #endif /* CONFIG_WPS */
1117 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1121 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1123 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1124 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1125 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1126 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1127 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1129 if (wpa_set_wep_keys(wpa_s, ssid)) {
1134 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1137 #ifdef IEEE8021X_EAPOL
1138 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1139 if ((ssid->eapol_flags &
1140 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1141 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1145 /* Assume that dynamic WEP-104 keys will be used and
1146 * set cipher suites in order for drivers to expect
1148 cipher_pairwise = cipher_group = CIPHER_WEP104;
1151 #endif /* IEEE8021X_EAPOL */
1153 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1154 /* Set the key before (and later after) association */
1155 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1158 wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1159 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1160 os_memset(¶ms, 0, sizeof(params));
1162 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1163 params.bssid = bss->bssid;
1164 params.ssid = ie ? ie + 2 : (u8 *) "";
1165 params.ssid_len = ie ? ie[1] : 0;
1166 params.freq = bss->freq;
1168 params.ssid = ssid->ssid;
1169 params.ssid_len = ssid->ssid_len;
1171 if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1172 params.freq = ssid->frequency; /* Initial channel for IBSS */
1173 params.wpa_ie = wpa_ie;
1174 params.wpa_ie_len = wpa_ie_len;
1175 params.pairwise_suite = cipher_pairwise;
1176 params.group_suite = cipher_group;
1177 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1178 params.auth_alg = algs;
1179 params.mode = ssid->mode;
1180 for (i = 0; i < NUM_WEP_KEYS; i++) {
1181 if (ssid->wep_key_len[i])
1182 params.wep_key[i] = ssid->wep_key[i];
1183 params.wep_key_len[i] = ssid->wep_key_len[i];
1185 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1187 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1188 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1189 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1190 params.passphrase = ssid->passphrase;
1192 params.psk = ssid->psk;
1195 params.drop_unencrypted = use_crypt;
1197 #ifdef CONFIG_IEEE80211W
1198 switch (ssid->ieee80211w) {
1200 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1202 case IEEE80211W_OPTIONAL:
1203 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1205 case IEEE80211W_REQUIRED:
1206 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1209 if (ssid->ieee80211w != NO_IEEE80211W && bss) {
1210 const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1211 struct wpa_ie_data ie;
1212 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1214 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1215 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1217 params.mgmt_frame_protection =
1218 MGMT_FRAME_PROTECTION_REQUIRED;
1221 #endif /* CONFIG_IEEE80211W */
1223 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1224 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1226 ret = wpa_drv_associate(wpa_s, ¶ms);
1228 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1230 /* try to continue anyway; new association will be tried again
1235 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1236 /* Set the key after the association just in case association
1237 * cleared the previously configured key. */
1238 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1239 /* No need to timeout authentication since there is no key
1241 wpa_supplicant_cancel_auth_timeout(wpa_s);
1242 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1243 #ifdef CONFIG_IBSS_RSN
1244 } else if (ssid->mode == IEEE80211_MODE_IBSS &&
1245 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1246 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1247 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1249 * RSN IBSS authentication is per-STA and we can disable the
1250 * per-BSSID authentication.
1252 wpa_supplicant_cancel_auth_timeout(wpa_s);
1253 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1254 #endif /* CONFIG_IBSS_RSN */
1256 /* Timeout for IEEE 802.11 authentication and association */
1260 /* give IBSS a bit more time */
1261 timeout = ssid->mode ? 10 : 5;
1262 } else if (wpa_s->conf->ap_scan == 1) {
1263 /* give IBSS a bit more time */
1264 timeout = ssid->mode ? 20 : 10;
1266 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1269 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1270 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1271 /* Set static WEP keys again */
1272 wpa_set_wep_keys(wpa_s, ssid);
1275 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1277 * Do not allow EAP session resumption between different
1278 * network configurations.
1280 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1282 old_ssid = wpa_s->current_ssid;
1283 wpa_s->current_ssid = ssid;
1284 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1285 wpa_supplicant_initiate_eapol(wpa_s);
1286 if (old_ssid != wpa_s->current_ssid)
1287 wpas_notify_network_changed(wpa_s);
1292 * wpa_supplicant_disassociate - Disassociate the current connection
1293 * @wpa_s: Pointer to wpa_supplicant data
1294 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1296 * This function is used to request %wpa_supplicant to disassociate with the
1299 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1302 struct wpa_ssid *old_ssid;
1305 if (!is_zero_ether_addr(wpa_s->bssid)) {
1306 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1307 ieee80211_sta_disassociate(wpa_s, reason_code);
1309 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1310 addr = wpa_s->bssid;
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_sm_set_config(wpa_s->wpa, NULL);
1317 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1318 if (old_ssid != wpa_s->current_ssid)
1319 wpas_notify_network_changed(wpa_s);
1324 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1325 * @wpa_s: Pointer to wpa_supplicant data
1326 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1328 * This function is used to request %wpa_supplicant to deauthenticate from the
1331 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1334 struct wpa_ssid *old_ssid;
1337 if (!is_zero_ether_addr(wpa_s->bssid)) {
1338 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1339 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1341 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1343 addr = wpa_s->bssid;
1345 wpa_clear_keys(wpa_s, addr);
1346 wpa_supplicant_mark_disassoc(wpa_s);
1347 old_ssid = wpa_s->current_ssid;
1348 wpa_s->current_ssid = NULL;
1349 wpa_sm_set_config(wpa_s->wpa, NULL);
1350 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1351 if (old_ssid != wpa_s->current_ssid)
1352 wpas_notify_network_changed(wpa_s);
1357 * wpa_supplicant_enable_network - Mark a configured network as enabled
1358 * @wpa_s: wpa_supplicant structure for a network interface
1359 * @ssid: wpa_ssid structure for a configured network or %NULL
1361 * Enables the specified network or all networks if no network specified.
1363 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1364 struct wpa_ssid *ssid)
1366 struct wpa_ssid *other_ssid;
1370 other_ssid = wpa_s->conf->ssid;
1371 while (other_ssid) {
1372 if (other_ssid == wpa_s->current_ssid &&
1373 other_ssid->disabled)
1374 wpa_s->reassociate = 1;
1376 was_disabled = other_ssid->disabled;
1378 other_ssid->disabled = 0;
1380 if (was_disabled != other_ssid->disabled)
1381 wpas_notify_network_enabled_changed(
1384 other_ssid = other_ssid->next;
1386 if (wpa_s->reassociate)
1387 wpa_supplicant_req_scan(wpa_s, 0, 0);
1388 } else if (wpa_s->current_ssid == NULL && ssid->disabled) {
1390 * Try to reassociate since there is no current configuration
1391 * and a new network was made available.
1393 wpa_s->reassociate = 1;
1394 wpa_supplicant_req_scan(wpa_s, 0, 0);
1396 was_disabled = ssid->disabled;
1400 if (was_disabled != ssid->disabled)
1401 wpas_notify_network_enabled_changed(wpa_s, ssid);
1407 * wpa_supplicant_disable_network - Mark a configured network as disabled
1408 * @wpa_s: wpa_supplicant structure for a network interface
1409 * @ssid: wpa_ssid structure for a configured network or %NULL
1411 * Disables the specified network or all networks if no network specified.
1413 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1414 struct wpa_ssid *ssid)
1416 struct wpa_ssid *other_ssid;
1420 other_ssid = wpa_s->conf->ssid;
1421 while (other_ssid) {
1422 was_disabled = other_ssid->disabled;
1424 other_ssid->disabled = 1;
1426 if (was_disabled != other_ssid->disabled)
1427 wpas_notify_network_enabled_changed(
1430 other_ssid = other_ssid->next;
1432 if (wpa_s->current_ssid)
1433 wpa_supplicant_disassociate(
1434 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1436 if (ssid == wpa_s->current_ssid)
1437 wpa_supplicant_disassociate(
1438 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1440 was_disabled = ssid->disabled;
1444 if (was_disabled != ssid->disabled)
1445 wpas_notify_network_enabled_changed(wpa_s, ssid);
1451 * wpa_supplicant_select_network - Attempt association with a network
1452 * @wpa_s: wpa_supplicant structure for a network interface
1453 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1455 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1456 struct wpa_ssid *ssid)
1459 struct wpa_ssid *other_ssid;
1461 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1462 wpa_supplicant_disassociate(
1463 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1466 * Mark all other networks disabled or mark all networks enabled if no
1467 * network specified.
1469 other_ssid = wpa_s->conf->ssid;
1470 while (other_ssid) {
1471 int was_disabled = other_ssid->disabled;
1473 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1475 if (was_disabled != other_ssid->disabled)
1476 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
1478 other_ssid = other_ssid->next;
1480 wpa_s->disconnected = 0;
1481 wpa_s->reassociate = 1;
1482 wpa_supplicant_req_scan(wpa_s, 0, 0);
1484 wpas_notify_network_selected(wpa_s, ssid);
1489 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1490 * @wpa_s: wpa_supplicant structure for a network interface
1491 * @ap_scan: AP scan mode
1492 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1495 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1500 if (ap_scan < 0 || ap_scan > 2)
1503 old_ap_scan = wpa_s->conf->ap_scan;
1504 wpa_s->conf->ap_scan = ap_scan;
1506 if (old_ap_scan != wpa_s->conf->ap_scan)
1507 wpas_notify_ap_scan_changed(wpa_s);
1514 * wpa_supplicant_set_debug_params - Set global debug params
1515 * @global: wpa_global structure
1516 * @debug_level: debug level
1517 * @debug_timestamp: determines if show timestamp in debug data
1518 * @debug_show_keys: determines if show keys in debug data
1519 * Returns: 0 if succeed or -1 if debug_level has wrong value
1521 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1522 int debug_timestamp, int debug_show_keys)
1525 int old_level, old_timestamp, old_show_keys;
1527 /* check for allowed debuglevels */
1528 if (debug_level != MSG_MSGDUMP &&
1529 debug_level != MSG_DEBUG &&
1530 debug_level != MSG_INFO &&
1531 debug_level != MSG_WARNING &&
1532 debug_level != MSG_ERROR)
1535 old_level = wpa_debug_level;
1536 old_timestamp = wpa_debug_timestamp;
1537 old_show_keys = wpa_debug_show_keys;
1539 wpa_debug_level = debug_level;
1540 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1541 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1543 if (wpa_debug_level != old_level ||
1544 wpa_debug_timestamp != old_timestamp ||
1545 wpa_debug_show_keys != old_show_keys)
1546 wpas_notify_debug_params_changed(global);
1552 static struct wpa_scan_results * wpa_supplicant_get_scan_results_old(
1553 struct wpa_supplicant *wpa_s)
1555 #define SCAN_AP_LIMIT 128
1556 struct wpa_scan_result *results;
1558 struct wpa_scan_results *res;
1560 results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1561 if (results == NULL) {
1562 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1567 num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1568 wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1570 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1574 if (num > SCAN_AP_LIMIT) {
1575 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1576 num, SCAN_AP_LIMIT);
1577 num = SCAN_AP_LIMIT;
1580 /* Convert old scan result data structure to the new one */
1581 res = os_zalloc(sizeof(*res));
1586 res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1587 if (res->res == NULL) {
1593 for (i = 0; i < num; i++) {
1594 struct wpa_scan_result *bss = &results[i];
1595 struct wpa_scan_res *r;
1599 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1602 if (bss->mdie_present)
1605 r = os_zalloc(sizeof(*r) + ie_len);
1609 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1610 r->freq = bss->freq;
1611 r->caps = bss->caps;
1612 r->qual = bss->qual;
1613 r->noise = bss->noise;
1614 r->level = bss->level;
1618 pos = (u8 *) (r + 1);
1621 *pos++ = WLAN_EID_SSID;
1622 *pos++ = bss->ssid_len;
1623 os_memcpy(pos, bss->ssid, bss->ssid_len);
1624 pos += bss->ssid_len;
1627 /* Fake Supported Rate IE to include max rate */
1628 *pos++ = WLAN_EID_SUPP_RATES;
1630 *pos++ = bss->maxrate;
1633 if (bss->rsn_ie_len) {
1634 os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1635 pos += bss->rsn_ie_len;
1638 if (bss->mdie_present) {
1639 os_memcpy(pos, bss->mdie, 5);
1643 if (bss->wpa_ie_len) {
1644 os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1645 pos += bss->wpa_ie_len;
1648 res->res[res->num++] = r;
1658 * wpa_supplicant_get_scan_results - Get scan results
1659 * @wpa_s: Pointer to wpa_supplicant data
1660 * Returns: 0 on success, -1 on failure
1662 * This function is request the current scan results from the driver and stores
1663 * a local copy of the results in wpa_s->scan_res.
1665 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1669 wpa_scan_results_free(wpa_s->scan_res);
1670 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1671 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1672 else if (wpa_s->driver->get_scan_results2 == NULL)
1673 wpa_s->scan_res = wpa_supplicant_get_scan_results_old(wpa_s);
1675 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1676 if (wpa_s->scan_res == NULL) {
1677 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1681 wpa_scan_sort_results(wpa_s->scan_res);
1689 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1690 * @wpa_s: Pointer to wpa_supplicant data
1691 * Returns: A pointer to the current network structure or %NULL on failure
1693 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1695 struct wpa_ssid *entry;
1696 u8 ssid[MAX_SSID_LEN];
1702 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1703 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1704 wpa_printf(MSG_WARNING, "Could not read SSID from "
1709 res = wpa_drv_get_ssid(wpa_s, ssid);
1711 wpa_printf(MSG_WARNING, "Could not read SSID from "
1718 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1719 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1720 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1721 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1725 wired = wpa_s->conf->ap_scan == 0 &&
1726 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1728 entry = wpa_s->conf->ssid;
1730 if (!entry->disabled &&
1731 ((ssid_len == entry->ssid_len &&
1732 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1733 (!entry->bssid_set ||
1734 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1737 if (!entry->disabled &&
1738 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1739 (entry->ssid == NULL || entry->ssid_len == 0) &&
1740 (!entry->bssid_set ||
1741 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1743 #endif /* CONFIG_WPS */
1744 entry = entry->next;
1751 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1761 if (wpa_drivers[0] == NULL) {
1762 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1768 /* default to first driver in the list */
1769 wpa_s->driver = wpa_drivers[0];
1773 pos = os_strchr(name, ',');
1777 len = os_strlen(name);
1778 for (i = 0; wpa_drivers[i]; i++) {
1779 if (os_strlen(wpa_drivers[i]->name) == len &&
1780 os_strncmp(name, wpa_drivers[i]->name, len) ==
1782 wpa_s->driver = wpa_drivers[i];
1787 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1792 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1793 const u8 *buf, size_t len)
1795 struct wpa_supplicant *wpa_s = ctx;
1797 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1798 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1800 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1802 * There is possible race condition between receiving the
1803 * association event and the EAPOL frame since they are coming
1804 * through different paths from the driver. In order to avoid
1805 * issues in trying to process the EAPOL frame before receiving
1806 * association information, lets queue it for processing until
1807 * the association event is received.
1809 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of "
1810 "received EAPOL frame");
1811 wpabuf_free(wpa_s->pending_eapol_rx);
1812 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1813 if (wpa_s->pending_eapol_rx) {
1814 os_get_time(&wpa_s->pending_eapol_rx_time);
1815 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1822 if (wpa_s->ap_iface) {
1823 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1826 #endif /* CONFIG_AP */
1828 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1829 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1830 "no key management is configured");
1834 if (wpa_s->eapol_received == 0 &&
1835 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1836 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1837 wpa_s->wpa_state != WPA_COMPLETED)) {
1838 /* Timeout for completing IEEE 802.1X and WPA authentication */
1839 wpa_supplicant_req_auth_timeout(
1841 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1842 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1843 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1846 wpa_s->eapol_received++;
1848 if (wpa_s->countermeasures) {
1849 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1854 #ifdef CONFIG_IBSS_RSN
1855 if (wpa_s->current_ssid &&
1856 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS) {
1857 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1860 #endif /* CONFIG_IBSS_RSN */
1862 /* Source address of the incoming EAPOL frame could be compared to the
1863 * current BSSID. However, it is possible that a centralized
1864 * Authenticator could be using another MAC address than the BSSID of
1865 * an AP, so just allow any address to be used for now. The replies are
1866 * still sent to the current BSSID (if available), though. */
1868 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1869 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1870 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1872 wpa_drv_poll(wpa_s);
1873 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1874 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1875 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1877 * Set portValid = TRUE here since we are going to skip 4-way
1878 * handshake processing which would normally set portValid. We
1879 * need this to allow the EAPOL state machines to be completed
1880 * without going through EAPOL-Key handshake.
1882 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1887 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1888 struct ieee80211_rx_status *rx_status)
1890 struct wpa_supplicant *wpa_s = ctx;
1891 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1896 * wpa_supplicant_driver_init - Initialize driver interface parameters
1897 * @wpa_s: Pointer to wpa_supplicant data
1898 * Returns: 0 on success, -1 on failure
1900 * This function is called to initialize driver interface parameters.
1901 * wpa_drv_init() must have been called before this function to initialize the
1904 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1906 static int interface_count = 0;
1908 if (wpa_s->driver->send_eapol) {
1909 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1911 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1913 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1914 wpa_drv_get_mac_addr(wpa_s),
1916 wpa_supplicant_rx_eapol, wpa_s, 0);
1917 if (wpa_s->l2 == NULL)
1921 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1922 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1926 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1927 MAC2STR(wpa_s->own_addr));
1929 if (wpa_s->bridge_ifname[0]) {
1930 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1931 " '%s'", wpa_s->bridge_ifname);
1932 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1935 wpa_supplicant_rx_eapol, wpa_s,
1937 if (wpa_s->l2_br == NULL) {
1938 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1939 "connection for the bridge interface '%s'",
1940 wpa_s->bridge_ifname);
1945 /* Backwards compatibility call to set_wpa() handler. This is called
1946 * only just after init and just before deinit, so these handler can be
1947 * used to implement same functionality. */
1948 if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1949 struct wpa_driver_capa capa;
1950 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1951 !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1952 WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1953 wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1954 /* Continue to allow non-WPA modes to be used. */
1956 wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1962 wpa_clear_keys(wpa_s, NULL);
1964 /* Make sure that TKIP countermeasures are not left enabled (could
1965 * happen if wpa_supplicant is killed during countermeasures. */
1966 wpa_drv_set_countermeasures(wpa_s, 0);
1968 wpa_drv_set_drop_unencrypted(wpa_s, 1);
1970 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1971 wpa_drv_flush_pmkid(wpa_s);
1973 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1974 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1981 static int wpa_supplicant_daemon(const char *pid_file)
1983 wpa_printf(MSG_DEBUG, "Daemonize..");
1984 return os_daemonize(pid_file);
1988 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1990 struct wpa_supplicant *wpa_s;
1992 wpa_s = os_zalloc(sizeof(*wpa_s));
1995 wpa_s->scan_req = 1;
2001 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2002 struct wpa_interface *iface)
2004 const char *ifname, *driver;
2005 struct wpa_driver_capa capa;
2007 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2008 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2009 iface->confname ? iface->confname : "N/A",
2010 iface->driver ? iface->driver : "default",
2011 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2012 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2014 if (iface->confname) {
2015 #ifdef CONFIG_BACKEND_FILE
2016 wpa_s->confname = os_rel2abs_path(iface->confname);
2017 if (wpa_s->confname == NULL) {
2018 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2019 "for configuration file '%s'.",
2023 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2024 iface->confname, wpa_s->confname);
2025 #else /* CONFIG_BACKEND_FILE */
2026 wpa_s->confname = os_strdup(iface->confname);
2027 #endif /* CONFIG_BACKEND_FILE */
2028 wpa_s->conf = wpa_config_read(wpa_s->confname);
2029 if (wpa_s->conf == NULL) {
2030 wpa_printf(MSG_ERROR, "Failed to read or parse "
2031 "configuration '%s'.", wpa_s->confname);
2036 * Override ctrl_interface and driver_param if set on command
2039 if (iface->ctrl_interface) {
2040 os_free(wpa_s->conf->ctrl_interface);
2041 wpa_s->conf->ctrl_interface =
2042 os_strdup(iface->ctrl_interface);
2045 if (iface->driver_param) {
2046 os_free(wpa_s->conf->driver_param);
2047 wpa_s->conf->driver_param =
2048 os_strdup(iface->driver_param);
2051 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2052 iface->driver_param);
2054 if (wpa_s->conf == NULL) {
2055 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2059 if (iface->ifname == NULL) {
2060 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2063 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2064 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2068 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2070 if (iface->bridge_ifname) {
2071 if (os_strlen(iface->bridge_ifname) >=
2072 sizeof(wpa_s->bridge_ifname)) {
2073 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2074 "name '%s'.", iface->bridge_ifname);
2077 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2078 sizeof(wpa_s->bridge_ifname));
2081 /* RSNA Supplicant Key Management - INITIALIZE */
2082 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2083 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2085 /* Initialize driver interface and register driver event handler before
2086 * L2 receive handler so that association events are processed before
2087 * EAPOL-Key packets if both become available for the same select()
2089 driver = iface->driver;
2091 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2094 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2095 if (wpa_s->drv_priv == NULL) {
2097 pos = os_strchr(driver, ',');
2099 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
2100 "interface - try next driver wrapper");
2104 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
2107 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2108 wpa_printf(MSG_ERROR, "Driver interface rejected "
2109 "driver_param '%s'", wpa_s->conf->driver_param);
2113 ifname = wpa_drv_get_ifname(wpa_s);
2114 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2115 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
2116 "name with '%s'", ifname);
2117 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2120 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2123 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2124 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2126 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2128 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2129 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2130 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2131 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2132 "dot11RSNAConfigPMKLifetime");
2136 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2137 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2138 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2139 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2140 "dot11RSNAConfigPMKReauthThreshold");
2144 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2145 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2146 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2147 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2148 "dot11RSNAConfigSATimeout");
2152 if (wpa_supplicant_driver_init(wpa_s) < 0)
2155 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2156 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2157 wpa_printf(MSG_DEBUG, "Failed to set country");
2161 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2163 if (wpas_wps_init(wpa_s))
2166 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2168 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2170 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2171 if (wpa_s->ctrl_iface == NULL) {
2172 wpa_printf(MSG_ERROR,
2173 "Failed to initialize control interface '%s'.\n"
2174 "You may have another wpa_supplicant process "
2175 "already running or the file was\n"
2176 "left by an unclean termination of wpa_supplicant "
2177 "in which case you will need\n"
2178 "to manually remove this file before starting "
2179 "wpa_supplicant again.\n",
2180 wpa_s->conf->ctrl_interface);
2184 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2185 wpa_s->drv_flags = capa.flags;
2186 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2187 if (ieee80211_sta_init(wpa_s))
2190 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2193 #ifdef CONFIG_IBSS_RSN
2194 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2195 if (!wpa_s->ibss_rsn) {
2196 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
2199 #endif /* CONFIG_IBSS_RSN */
2205 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
2207 if (wpa_s->drv_priv) {
2208 wpa_supplicant_deauthenticate(wpa_s,
2209 WLAN_REASON_DEAUTH_LEAVING);
2211 /* Backwards compatibility call to set_wpa() handler. This is
2212 * called only just after init and just before deinit, so these
2213 * handler can be used to implement same functionality. */
2214 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
2215 wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
2219 wpa_drv_set_drop_unencrypted(wpa_s, 0);
2220 wpa_drv_set_countermeasures(wpa_s, 0);
2221 wpa_clear_keys(wpa_s, NULL);
2224 wpas_notify_iface_removed(wpa_s);
2226 wpa_supplicant_cleanup(wpa_s);
2228 if (wpa_s->drv_priv)
2229 wpa_drv_deinit(wpa_s);
2234 * wpa_supplicant_add_iface - Add a new network interface
2235 * @global: Pointer to global data from wpa_supplicant_init()
2236 * @iface: Interface configuration options
2237 * Returns: Pointer to the created interface or %NULL on failure
2239 * This function is used to add new network interfaces for %wpa_supplicant.
2240 * This can be called before wpa_supplicant_run() to add interfaces before the
2241 * main event loop has been started. In addition, new interfaces can be added
2242 * dynamically while %wpa_supplicant is already running. This could happen,
2243 * e.g., when a hotplug network adapter is inserted.
2245 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2246 struct wpa_interface *iface)
2248 struct wpa_supplicant *wpa_s;
2249 struct wpa_interface t_iface;
2251 if (global == NULL || iface == NULL)
2254 wpa_s = wpa_supplicant_alloc();
2259 if (global->params.override_driver) {
2260 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2262 iface->driver, global->params.override_driver);
2263 t_iface.driver = global->params.override_driver;
2265 if (global->params.override_ctrl_interface) {
2266 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2267 "ctrl_interface ('%s' -> '%s')",
2268 iface->ctrl_interface,
2269 global->params.override_ctrl_interface);
2270 t_iface.ctrl_interface =
2271 global->params.override_ctrl_interface;
2273 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2274 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2276 wpa_supplicant_deinit_iface(wpa_s);
2281 wpa_s->global = global;
2283 /* Notify the control interfaces about new iface */
2284 if (wpas_notify_iface_added(wpa_s)) {
2285 wpa_supplicant_deinit_iface(wpa_s);
2290 wpa_s->next = global->ifaces;
2291 global->ifaces = wpa_s;
2293 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2300 * wpa_supplicant_remove_iface - Remove a network interface
2301 * @global: Pointer to global data from wpa_supplicant_init()
2302 * @wpa_s: Pointer to the network interface to be removed
2303 * Returns: 0 if interface was removed, -1 if interface was not found
2305 * This function can be used to dynamically remove network interfaces from
2306 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2307 * addition, this function is used to remove all remaining interfaces when
2308 * %wpa_supplicant is terminated.
2310 int wpa_supplicant_remove_iface(struct wpa_global *global,
2311 struct wpa_supplicant *wpa_s)
2313 struct wpa_supplicant *prev;
2315 /* Remove interface from the global list of interfaces */
2316 prev = global->ifaces;
2317 if (prev == wpa_s) {
2318 global->ifaces = wpa_s->next;
2320 while (prev && prev->next != wpa_s)
2324 prev->next = wpa_s->next;
2327 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2329 wpa_supplicant_deinit_iface(wpa_s);
2337 * wpa_supplicant_get_iface - Get a new network interface
2338 * @global: Pointer to global data from wpa_supplicant_init()
2339 * @ifname: Interface name
2340 * Returns: Pointer to the interface or %NULL if not found
2342 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2345 struct wpa_supplicant *wpa_s;
2347 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2348 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2356 * wpa_supplicant_init - Initialize %wpa_supplicant
2357 * @params: Parameters for %wpa_supplicant
2358 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2360 * This function is used to initialize %wpa_supplicant. After successful
2361 * initialization, the returned data pointer can be used to add and remove
2362 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2364 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2366 struct wpa_global *global;
2372 wpa_debug_open_file(params->wpa_debug_file_path);
2373 if (params->wpa_debug_syslog)
2374 wpa_debug_open_syslog();
2376 ret = eap_peer_register_methods();
2378 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2380 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2381 "the same EAP type.");
2386 ret = eap_server_register_methods();
2388 wpa_printf(MSG_ERROR, "Failed to register EAP server methods");
2390 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2391 "the same EAP type.");
2394 #endif /* CONFIG_AP */
2396 global = os_zalloc(sizeof(*global));
2399 global->params.daemonize = params->daemonize;
2400 global->params.wait_for_monitor = params->wait_for_monitor;
2401 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2402 if (params->pid_file)
2403 global->params.pid_file = os_strdup(params->pid_file);
2404 if (params->ctrl_interface)
2405 global->params.ctrl_interface =
2406 os_strdup(params->ctrl_interface);
2407 if (params->override_driver)
2408 global->params.override_driver =
2409 os_strdup(params->override_driver);
2410 if (params->override_ctrl_interface)
2411 global->params.override_ctrl_interface =
2412 os_strdup(params->override_ctrl_interface);
2413 wpa_debug_level = global->params.wpa_debug_level =
2414 params->wpa_debug_level;
2415 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2416 params->wpa_debug_show_keys;
2417 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2418 params->wpa_debug_timestamp;
2420 if (eloop_init(global)) {
2421 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2422 wpa_supplicant_deinit(global);
2426 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2427 if (global->ctrl_iface == NULL) {
2428 wpa_supplicant_deinit(global);
2432 if (wpas_notify_supplicant_initialized(global)) {
2433 wpa_supplicant_deinit(global);
2437 for (i = 0; wpa_drivers[i]; i++)
2438 global->drv_count++;
2439 if (global->drv_count == 0) {
2440 wpa_printf(MSG_ERROR, "No drivers enabled");
2441 wpa_supplicant_deinit(global);
2444 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2445 if (global->drv_priv == NULL) {
2446 wpa_supplicant_deinit(global);
2449 for (i = 0; wpa_drivers[i]; i++) {
2450 if (!wpa_drivers[i]->global_init)
2452 global->drv_priv[i] = wpa_drivers[i]->global_init();
2453 if (global->drv_priv[i] == NULL) {
2454 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2455 "'%s'", wpa_drivers[i]->name);
2456 wpa_supplicant_deinit(global);
2466 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2467 * @global: Pointer to global data from wpa_supplicant_init()
2468 * Returns: 0 after successful event loop run, -1 on failure
2470 * This function starts the main event loop and continues running as long as
2471 * there are any remaining events. In most cases, this function is running as
2472 * long as the %wpa_supplicant process in still in use.
2474 int wpa_supplicant_run(struct wpa_global *global)
2476 struct wpa_supplicant *wpa_s;
2478 if (global->params.daemonize &&
2479 wpa_supplicant_daemon(global->params.pid_file))
2482 if (global->params.wait_for_monitor) {
2483 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2484 if (wpa_s->ctrl_iface)
2485 wpa_supplicant_ctrl_iface_wait(
2489 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2490 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2499 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2500 * @global: Pointer to global data from wpa_supplicant_init()
2502 * This function is called to deinitialize %wpa_supplicant and to free all
2503 * allocated resources. Remaining network interfaces will also be removed.
2505 void wpa_supplicant_deinit(struct wpa_global *global)
2512 while (global->ifaces)
2513 wpa_supplicant_remove_iface(global, global->ifaces);
2515 if (global->ctrl_iface)
2516 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2518 wpas_notify_supplicant_deinitialized(global);
2520 eap_peer_unregister_methods();
2522 eap_server_unregister_methods();
2523 #endif /* CONFIG_AP */
2525 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2526 if (!global->drv_priv[i])
2528 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2530 os_free(global->drv_priv);
2534 if (global->params.pid_file) {
2535 os_daemonize_terminate(global->params.pid_file);
2536 os_free(global->params.pid_file);
2538 os_free(global->params.ctrl_interface);
2539 os_free(global->params.override_driver);
2540 os_free(global->params.override_ctrl_interface);
2543 wpa_debug_close_syslog();
2544 wpa_debug_close_file();