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);
1485 wpas_notify_network_selected(wpa_s, ssid);
1490 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1491 * @wpa_s: wpa_supplicant structure for a network interface
1492 * @ap_scan: AP scan mode
1493 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1496 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1501 if (ap_scan < 0 || ap_scan > 2)
1504 old_ap_scan = wpa_s->conf->ap_scan;
1505 wpa_s->conf->ap_scan = ap_scan;
1507 if (old_ap_scan != wpa_s->conf->ap_scan)
1508 wpas_notify_ap_scan_changed(wpa_s);
1515 * wpa_supplicant_set_debug_params - Set global debug params
1516 * @global: wpa_global structure
1517 * @debug_level: debug level
1518 * @debug_timestamp: determines if show timestamp in debug data
1519 * @debug_show_keys: determines if show keys in debug data
1520 * Returns: 0 if succeed or -1 if debug_level has wrong value
1522 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1523 int debug_timestamp, int debug_show_keys)
1526 int old_level, old_timestamp, old_show_keys;
1528 /* check for allowed debuglevels */
1529 if (debug_level != MSG_MSGDUMP &&
1530 debug_level != MSG_DEBUG &&
1531 debug_level != MSG_INFO &&
1532 debug_level != MSG_WARNING &&
1533 debug_level != MSG_ERROR)
1536 old_level = wpa_debug_level;
1537 old_timestamp = wpa_debug_timestamp;
1538 old_show_keys = wpa_debug_show_keys;
1540 wpa_debug_level = debug_level;
1541 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1542 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1544 if (wpa_debug_level != old_level ||
1545 wpa_debug_timestamp != old_timestamp ||
1546 wpa_debug_show_keys != old_show_keys)
1547 wpas_notify_debug_params_changed(global);
1553 static struct wpa_scan_results * wpa_supplicant_get_scan_results_old(
1554 struct wpa_supplicant *wpa_s)
1556 #define SCAN_AP_LIMIT 128
1557 struct wpa_scan_result *results;
1559 struct wpa_scan_results *res;
1561 results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1562 if (results == NULL) {
1563 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1568 num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1569 wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1571 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1575 if (num > SCAN_AP_LIMIT) {
1576 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1577 num, SCAN_AP_LIMIT);
1578 num = SCAN_AP_LIMIT;
1581 /* Convert old scan result data structure to the new one */
1582 res = os_zalloc(sizeof(*res));
1587 res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1588 if (res->res == NULL) {
1594 for (i = 0; i < num; i++) {
1595 struct wpa_scan_result *bss = &results[i];
1596 struct wpa_scan_res *r;
1600 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1603 if (bss->mdie_present)
1606 r = os_zalloc(sizeof(*r) + ie_len);
1610 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1611 r->freq = bss->freq;
1612 r->caps = bss->caps;
1613 r->qual = bss->qual;
1614 r->noise = bss->noise;
1615 r->level = bss->level;
1619 pos = (u8 *) (r + 1);
1622 *pos++ = WLAN_EID_SSID;
1623 *pos++ = bss->ssid_len;
1624 os_memcpy(pos, bss->ssid, bss->ssid_len);
1625 pos += bss->ssid_len;
1628 /* Fake Supported Rate IE to include max rate */
1629 *pos++ = WLAN_EID_SUPP_RATES;
1631 *pos++ = bss->maxrate;
1634 if (bss->rsn_ie_len) {
1635 os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1636 pos += bss->rsn_ie_len;
1639 if (bss->mdie_present) {
1640 os_memcpy(pos, bss->mdie, 5);
1644 if (bss->wpa_ie_len) {
1645 os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1646 pos += bss->wpa_ie_len;
1649 res->res[res->num++] = r;
1659 * wpa_supplicant_get_scan_results - Get scan results
1660 * @wpa_s: Pointer to wpa_supplicant data
1661 * Returns: 0 on success, -1 on failure
1663 * This function is request the current scan results from the driver and stores
1664 * a local copy of the results in wpa_s->scan_res.
1666 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1670 wpa_scan_results_free(wpa_s->scan_res);
1671 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1672 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1673 else if (wpa_s->driver->get_scan_results2 == NULL)
1674 wpa_s->scan_res = wpa_supplicant_get_scan_results_old(wpa_s);
1676 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1677 if (wpa_s->scan_res == NULL) {
1678 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1682 wpa_scan_sort_results(wpa_s->scan_res);
1690 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1691 * @wpa_s: Pointer to wpa_supplicant data
1692 * Returns: A pointer to the current network structure or %NULL on failure
1694 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1696 struct wpa_ssid *entry;
1697 u8 ssid[MAX_SSID_LEN];
1703 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1704 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1705 wpa_printf(MSG_WARNING, "Could not read SSID from "
1710 res = wpa_drv_get_ssid(wpa_s, ssid);
1712 wpa_printf(MSG_WARNING, "Could not read SSID from "
1719 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1720 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1721 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1722 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1726 wired = wpa_s->conf->ap_scan == 0 &&
1727 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1729 entry = wpa_s->conf->ssid;
1731 if (!entry->disabled &&
1732 ((ssid_len == entry->ssid_len &&
1733 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1734 (!entry->bssid_set ||
1735 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1738 if (!entry->disabled &&
1739 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1740 (entry->ssid == NULL || entry->ssid_len == 0) &&
1741 (!entry->bssid_set ||
1742 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1744 #endif /* CONFIG_WPS */
1745 entry = entry->next;
1752 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1762 if (wpa_drivers[0] == NULL) {
1763 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1769 /* default to first driver in the list */
1770 wpa_s->driver = wpa_drivers[0];
1774 pos = os_strchr(name, ',');
1778 len = os_strlen(name);
1779 for (i = 0; wpa_drivers[i]; i++) {
1780 if (os_strlen(wpa_drivers[i]->name) == len &&
1781 os_strncmp(name, wpa_drivers[i]->name, len) ==
1783 wpa_s->driver = wpa_drivers[i];
1788 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1793 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1794 const u8 *buf, size_t len)
1796 struct wpa_supplicant *wpa_s = ctx;
1798 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1799 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1801 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1803 * There is possible race condition between receiving the
1804 * association event and the EAPOL frame since they are coming
1805 * through different paths from the driver. In order to avoid
1806 * issues in trying to process the EAPOL frame before receiving
1807 * association information, lets queue it for processing until
1808 * the association event is received.
1810 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of "
1811 "received EAPOL frame");
1812 wpabuf_free(wpa_s->pending_eapol_rx);
1813 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1814 if (wpa_s->pending_eapol_rx) {
1815 os_get_time(&wpa_s->pending_eapol_rx_time);
1816 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1823 if (wpa_s->ap_iface) {
1824 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1827 #endif /* CONFIG_AP */
1829 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1830 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1831 "no key management is configured");
1835 if (wpa_s->eapol_received == 0 &&
1836 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1837 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1838 wpa_s->wpa_state != WPA_COMPLETED)) {
1839 /* Timeout for completing IEEE 802.1X and WPA authentication */
1840 wpa_supplicant_req_auth_timeout(
1842 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1843 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1844 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1847 wpa_s->eapol_received++;
1849 if (wpa_s->countermeasures) {
1850 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1855 #ifdef CONFIG_IBSS_RSN
1856 if (wpa_s->current_ssid &&
1857 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS) {
1858 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1861 #endif /* CONFIG_IBSS_RSN */
1863 /* Source address of the incoming EAPOL frame could be compared to the
1864 * current BSSID. However, it is possible that a centralized
1865 * Authenticator could be using another MAC address than the BSSID of
1866 * an AP, so just allow any address to be used for now. The replies are
1867 * still sent to the current BSSID (if available), though. */
1869 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1870 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1871 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1873 wpa_drv_poll(wpa_s);
1874 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1875 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1876 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1878 * Set portValid = TRUE here since we are going to skip 4-way
1879 * handshake processing which would normally set portValid. We
1880 * need this to allow the EAPOL state machines to be completed
1881 * without going through EAPOL-Key handshake.
1883 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1888 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1889 struct ieee80211_rx_status *rx_status)
1891 struct wpa_supplicant *wpa_s = ctx;
1892 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1897 * wpa_supplicant_driver_init - Initialize driver interface parameters
1898 * @wpa_s: Pointer to wpa_supplicant data
1899 * Returns: 0 on success, -1 on failure
1901 * This function is called to initialize driver interface parameters.
1902 * wpa_drv_init() must have been called before this function to initialize the
1905 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1907 static int interface_count = 0;
1909 if (wpa_s->driver->send_eapol) {
1910 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1912 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1914 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1915 wpa_drv_get_mac_addr(wpa_s),
1917 wpa_supplicant_rx_eapol, wpa_s, 0);
1918 if (wpa_s->l2 == NULL)
1922 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1923 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1927 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1928 MAC2STR(wpa_s->own_addr));
1930 if (wpa_s->bridge_ifname[0]) {
1931 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1932 " '%s'", wpa_s->bridge_ifname);
1933 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1936 wpa_supplicant_rx_eapol, wpa_s,
1938 if (wpa_s->l2_br == NULL) {
1939 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1940 "connection for the bridge interface '%s'",
1941 wpa_s->bridge_ifname);
1946 /* Backwards compatibility call to set_wpa() handler. This is called
1947 * only just after init and just before deinit, so these handler can be
1948 * used to implement same functionality. */
1949 if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1950 struct wpa_driver_capa capa;
1951 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1952 !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1953 WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1954 wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1955 /* Continue to allow non-WPA modes to be used. */
1957 wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1963 wpa_clear_keys(wpa_s, NULL);
1965 /* Make sure that TKIP countermeasures are not left enabled (could
1966 * happen if wpa_supplicant is killed during countermeasures. */
1967 wpa_drv_set_countermeasures(wpa_s, 0);
1969 wpa_drv_set_drop_unencrypted(wpa_s, 1);
1971 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1972 wpa_drv_flush_pmkid(wpa_s);
1974 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1975 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1982 static int wpa_supplicant_daemon(const char *pid_file)
1984 wpa_printf(MSG_DEBUG, "Daemonize..");
1985 return os_daemonize(pid_file);
1989 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1991 struct wpa_supplicant *wpa_s;
1993 wpa_s = os_zalloc(sizeof(*wpa_s));
1996 wpa_s->scan_req = 1;
2002 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2003 struct wpa_interface *iface)
2005 const char *ifname, *driver;
2006 struct wpa_driver_capa capa;
2008 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2009 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2010 iface->confname ? iface->confname : "N/A",
2011 iface->driver ? iface->driver : "default",
2012 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2013 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2015 if (iface->confname) {
2016 #ifdef CONFIG_BACKEND_FILE
2017 wpa_s->confname = os_rel2abs_path(iface->confname);
2018 if (wpa_s->confname == NULL) {
2019 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2020 "for configuration file '%s'.",
2024 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2025 iface->confname, wpa_s->confname);
2026 #else /* CONFIG_BACKEND_FILE */
2027 wpa_s->confname = os_strdup(iface->confname);
2028 #endif /* CONFIG_BACKEND_FILE */
2029 wpa_s->conf = wpa_config_read(wpa_s->confname);
2030 if (wpa_s->conf == NULL) {
2031 wpa_printf(MSG_ERROR, "Failed to read or parse "
2032 "configuration '%s'.", wpa_s->confname);
2037 * Override ctrl_interface and driver_param if set on command
2040 if (iface->ctrl_interface) {
2041 os_free(wpa_s->conf->ctrl_interface);
2042 wpa_s->conf->ctrl_interface =
2043 os_strdup(iface->ctrl_interface);
2046 if (iface->driver_param) {
2047 os_free(wpa_s->conf->driver_param);
2048 wpa_s->conf->driver_param =
2049 os_strdup(iface->driver_param);
2052 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2053 iface->driver_param);
2055 if (wpa_s->conf == NULL) {
2056 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2060 if (iface->ifname == NULL) {
2061 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2064 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2065 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2069 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2071 if (iface->bridge_ifname) {
2072 if (os_strlen(iface->bridge_ifname) >=
2073 sizeof(wpa_s->bridge_ifname)) {
2074 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2075 "name '%s'.", iface->bridge_ifname);
2078 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2079 sizeof(wpa_s->bridge_ifname));
2082 /* RSNA Supplicant Key Management - INITIALIZE */
2083 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2084 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2086 /* Initialize driver interface and register driver event handler before
2087 * L2 receive handler so that association events are processed before
2088 * EAPOL-Key packets if both become available for the same select()
2090 driver = iface->driver;
2092 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2095 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2096 if (wpa_s->drv_priv == NULL) {
2098 pos = os_strchr(driver, ',');
2100 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
2101 "interface - try next driver wrapper");
2105 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
2108 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
2109 wpa_printf(MSG_ERROR, "Driver interface rejected "
2110 "driver_param '%s'", wpa_s->conf->driver_param);
2114 ifname = wpa_drv_get_ifname(wpa_s);
2115 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
2116 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
2117 "name with '%s'", ifname);
2118 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2121 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2124 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2125 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2127 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2129 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2130 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2131 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
2132 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2133 "dot11RSNAConfigPMKLifetime");
2137 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2138 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2139 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
2140 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2141 "dot11RSNAConfigPMKReauthThreshold");
2145 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2146 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2147 wpa_s->conf->dot11RSNAConfigSATimeout)) {
2148 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
2149 "dot11RSNAConfigSATimeout");
2153 if (wpa_supplicant_driver_init(wpa_s) < 0)
2156 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2157 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
2158 wpa_printf(MSG_DEBUG, "Failed to set country");
2162 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2164 if (wpas_wps_init(wpa_s))
2167 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2169 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2171 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2172 if (wpa_s->ctrl_iface == NULL) {
2173 wpa_printf(MSG_ERROR,
2174 "Failed to initialize control interface '%s'.\n"
2175 "You may have another wpa_supplicant process "
2176 "already running or the file was\n"
2177 "left by an unclean termination of wpa_supplicant "
2178 "in which case you will need\n"
2179 "to manually remove this file before starting "
2180 "wpa_supplicant again.\n",
2181 wpa_s->conf->ctrl_interface);
2185 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2186 wpa_s->drv_flags = capa.flags;
2187 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2188 if (ieee80211_sta_init(wpa_s))
2191 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2194 #ifdef CONFIG_IBSS_RSN
2195 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2196 if (!wpa_s->ibss_rsn) {
2197 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
2200 #endif /* CONFIG_IBSS_RSN */
2206 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
2208 if (wpa_s->drv_priv) {
2209 wpa_supplicant_deauthenticate(wpa_s,
2210 WLAN_REASON_DEAUTH_LEAVING);
2212 /* Backwards compatibility call to set_wpa() handler. This is
2213 * called only just after init and just before deinit, so these
2214 * handler can be used to implement same functionality. */
2215 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
2216 wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
2220 wpa_drv_set_drop_unencrypted(wpa_s, 0);
2221 wpa_drv_set_countermeasures(wpa_s, 0);
2222 wpa_clear_keys(wpa_s, NULL);
2225 wpas_notify_iface_removed(wpa_s);
2227 wpa_supplicant_cleanup(wpa_s);
2229 if (wpa_s->drv_priv)
2230 wpa_drv_deinit(wpa_s);
2235 * wpa_supplicant_add_iface - Add a new network interface
2236 * @global: Pointer to global data from wpa_supplicant_init()
2237 * @iface: Interface configuration options
2238 * Returns: Pointer to the created interface or %NULL on failure
2240 * This function is used to add new network interfaces for %wpa_supplicant.
2241 * This can be called before wpa_supplicant_run() to add interfaces before the
2242 * main event loop has been started. In addition, new interfaces can be added
2243 * dynamically while %wpa_supplicant is already running. This could happen,
2244 * e.g., when a hotplug network adapter is inserted.
2246 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2247 struct wpa_interface *iface)
2249 struct wpa_supplicant *wpa_s;
2250 struct wpa_interface t_iface;
2252 if (global == NULL || iface == NULL)
2255 wpa_s = wpa_supplicant_alloc();
2260 if (global->params.override_driver) {
2261 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2263 iface->driver, global->params.override_driver);
2264 t_iface.driver = global->params.override_driver;
2266 if (global->params.override_ctrl_interface) {
2267 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2268 "ctrl_interface ('%s' -> '%s')",
2269 iface->ctrl_interface,
2270 global->params.override_ctrl_interface);
2271 t_iface.ctrl_interface =
2272 global->params.override_ctrl_interface;
2274 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
2275 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2277 wpa_supplicant_deinit_iface(wpa_s);
2282 wpa_s->global = global;
2284 /* Notify the control interfaces about new iface */
2285 if (wpas_notify_iface_added(wpa_s)) {
2286 wpa_supplicant_deinit_iface(wpa_s);
2291 wpa_s->next = global->ifaces;
2292 global->ifaces = wpa_s;
2294 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2301 * wpa_supplicant_remove_iface - Remove a network interface
2302 * @global: Pointer to global data from wpa_supplicant_init()
2303 * @wpa_s: Pointer to the network interface to be removed
2304 * Returns: 0 if interface was removed, -1 if interface was not found
2306 * This function can be used to dynamically remove network interfaces from
2307 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2308 * addition, this function is used to remove all remaining interfaces when
2309 * %wpa_supplicant is terminated.
2311 int wpa_supplicant_remove_iface(struct wpa_global *global,
2312 struct wpa_supplicant *wpa_s)
2314 struct wpa_supplicant *prev;
2316 /* Remove interface from the global list of interfaces */
2317 prev = global->ifaces;
2318 if (prev == wpa_s) {
2319 global->ifaces = wpa_s->next;
2321 while (prev && prev->next != wpa_s)
2325 prev->next = wpa_s->next;
2328 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2330 wpa_supplicant_deinit_iface(wpa_s);
2338 * wpa_supplicant_get_iface - Get a new network interface
2339 * @global: Pointer to global data from wpa_supplicant_init()
2340 * @ifname: Interface name
2341 * Returns: Pointer to the interface or %NULL if not found
2343 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2346 struct wpa_supplicant *wpa_s;
2348 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2349 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2357 * wpa_supplicant_init - Initialize %wpa_supplicant
2358 * @params: Parameters for %wpa_supplicant
2359 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2361 * This function is used to initialize %wpa_supplicant. After successful
2362 * initialization, the returned data pointer can be used to add and remove
2363 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2365 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2367 struct wpa_global *global;
2373 wpa_debug_open_file(params->wpa_debug_file_path);
2374 if (params->wpa_debug_syslog)
2375 wpa_debug_open_syslog();
2377 ret = eap_peer_register_methods();
2379 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2381 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2382 "the same EAP type.");
2387 ret = eap_server_register_methods();
2389 wpa_printf(MSG_ERROR, "Failed to register EAP server methods");
2391 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2392 "the same EAP type.");
2395 #endif /* CONFIG_AP */
2397 global = os_zalloc(sizeof(*global));
2400 global->params.daemonize = params->daemonize;
2401 global->params.wait_for_monitor = params->wait_for_monitor;
2402 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2403 if (params->pid_file)
2404 global->params.pid_file = os_strdup(params->pid_file);
2405 if (params->ctrl_interface)
2406 global->params.ctrl_interface =
2407 os_strdup(params->ctrl_interface);
2408 if (params->override_driver)
2409 global->params.override_driver =
2410 os_strdup(params->override_driver);
2411 if (params->override_ctrl_interface)
2412 global->params.override_ctrl_interface =
2413 os_strdup(params->override_ctrl_interface);
2414 wpa_debug_level = global->params.wpa_debug_level =
2415 params->wpa_debug_level;
2416 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2417 params->wpa_debug_show_keys;
2418 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2419 params->wpa_debug_timestamp;
2421 if (eloop_init(global)) {
2422 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2423 wpa_supplicant_deinit(global);
2427 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2428 if (global->ctrl_iface == NULL) {
2429 wpa_supplicant_deinit(global);
2433 if (wpas_notify_supplicant_initialized(global)) {
2434 wpa_supplicant_deinit(global);
2438 for (i = 0; wpa_drivers[i]; i++)
2439 global->drv_count++;
2440 if (global->drv_count == 0) {
2441 wpa_printf(MSG_ERROR, "No drivers enabled");
2442 wpa_supplicant_deinit(global);
2445 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2446 if (global->drv_priv == NULL) {
2447 wpa_supplicant_deinit(global);
2450 for (i = 0; wpa_drivers[i]; i++) {
2451 if (!wpa_drivers[i]->global_init)
2453 global->drv_priv[i] = wpa_drivers[i]->global_init();
2454 if (global->drv_priv[i] == NULL) {
2455 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2456 "'%s'", wpa_drivers[i]->name);
2457 wpa_supplicant_deinit(global);
2467 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2468 * @global: Pointer to global data from wpa_supplicant_init()
2469 * Returns: 0 after successful event loop run, -1 on failure
2471 * This function starts the main event loop and continues running as long as
2472 * there are any remaining events. In most cases, this function is running as
2473 * long as the %wpa_supplicant process in still in use.
2475 int wpa_supplicant_run(struct wpa_global *global)
2477 struct wpa_supplicant *wpa_s;
2479 if (global->params.daemonize &&
2480 wpa_supplicant_daemon(global->params.pid_file))
2483 if (global->params.wait_for_monitor) {
2484 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2485 if (wpa_s->ctrl_iface)
2486 wpa_supplicant_ctrl_iface_wait(
2490 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2491 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2500 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2501 * @global: Pointer to global data from wpa_supplicant_init()
2503 * This function is called to deinitialize %wpa_supplicant and to free all
2504 * allocated resources. Remaining network interfaces will also be removed.
2506 void wpa_supplicant_deinit(struct wpa_global *global)
2513 while (global->ifaces)
2514 wpa_supplicant_remove_iface(global, global->ifaces);
2516 if (global->ctrl_iface)
2517 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2519 wpas_notify_supplicant_deinitialized(global);
2521 eap_peer_unregister_methods();
2523 eap_server_unregister_methods();
2524 #endif /* CONFIG_AP */
2526 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
2527 if (!global->drv_priv[i])
2529 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
2531 os_free(global->drv_priv);
2535 if (global->params.pid_file) {
2536 os_daemonize_terminate(global->params.pid_file);
2537 os_free(global->params.pid_file);
2539 os_free(global->params.ctrl_interface);
2540 os_free(global->params.override_driver);
2541 os_free(global->params.override_ctrl_interface);
2544 wpa_debug_close_syslog();
2545 wpa_debug_close_file();