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"
27 #include "l2_packet/l2_packet.h"
28 #include "wpa_supplicant_i.h"
30 #include "ctrl_iface.h"
31 #include "ctrl_iface_dbus.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"
46 const char *wpa_supplicant_version =
47 "wpa_supplicant v" VERSION_STR "\n"
48 "Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi> and contributors";
50 const char *wpa_supplicant_license =
51 "This program is free software. You can distribute it and/or modify it\n"
52 "under the terms of the GNU General Public License version 2.\n"
54 "Alternatively, this software may be distributed under the terms of the\n"
55 "BSD license. See README and COPYING for more details.\n"
56 #ifdef EAP_TLS_OPENSSL
57 "\nThis product includes software developed by the OpenSSL Project\n"
58 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
59 #endif /* EAP_TLS_OPENSSL */
62 #ifndef CONFIG_NO_STDOUT_DEBUG
63 /* Long text divided into parts in order to fit in C89 strings size limits. */
64 const char *wpa_supplicant_full_license1 =
65 "This program is free software; you can redistribute it and/or modify\n"
66 "it under the terms of the GNU General Public License version 2 as\n"
67 "published by the Free Software Foundation.\n"
69 "This program is distributed in the hope that it will be useful,\n"
70 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
71 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
72 "GNU General Public License for more details.\n"
74 const char *wpa_supplicant_full_license2 =
75 "You should have received a copy of the GNU General Public License\n"
76 "along with this program; if not, write to the Free Software\n"
77 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
79 "Alternatively, this software may be distributed under the terms of the\n"
82 "Redistribution and use in source and binary forms, with or without\n"
83 "modification, are permitted provided that the following conditions are\n"
86 const char *wpa_supplicant_full_license3 =
87 "1. Redistributions of source code must retain the above copyright\n"
88 " notice, this list of conditions and the following disclaimer.\n"
90 "2. Redistributions in binary form must reproduce the above copyright\n"
91 " notice, this list of conditions and the following disclaimer in the\n"
92 " documentation and/or other materials provided with the distribution.\n"
94 const char *wpa_supplicant_full_license4 =
95 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
96 " names of its contributors may be used to endorse or promote products\n"
97 " derived from this software without specific prior written permission.\n"
99 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
100 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
101 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
102 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
103 const char *wpa_supplicant_full_license5 =
104 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
105 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
106 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
107 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
108 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
109 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
110 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
112 #endif /* CONFIG_NO_STDOUT_DEBUG */
114 extern int wpa_debug_level;
115 extern int wpa_debug_show_keys;
116 extern int wpa_debug_timestamp;
117 extern struct wpa_driver_ops *wpa_supplicant_drivers[];
119 /* Configure default/group WEP keys for static WEP */
120 static int wpa_set_wep_keys(struct wpa_supplicant *wpa_s,
121 struct wpa_ssid *ssid)
125 for (i = 0; i < NUM_WEP_KEYS; i++) {
126 if (ssid->wep_key_len[i] == 0)
130 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
131 (u8 *) "\xff\xff\xff\xff\xff\xff",
132 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
133 ssid->wep_key[i], ssid->wep_key_len[i]);
140 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
141 struct wpa_ssid *ssid)
148 /* IBSS/WPA-None uses only one key (Group) for both receiving and
149 * sending unicast and multicast packets. */
151 if (ssid->mode != IEEE80211_MODE_IBSS) {
152 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
153 "for WPA-None", ssid->mode);
157 if (!ssid->psk_set) {
158 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
162 switch (wpa_s->group_cipher) {
163 case WPA_CIPHER_CCMP:
164 os_memcpy(key, ssid->psk, 16);
168 case WPA_CIPHER_TKIP:
169 /* WPA-None uses the same Michael MIC key for both TX and RX */
170 os_memcpy(key, ssid->psk, 16 + 8);
171 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
176 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
177 "WPA-None", wpa_s->group_cipher);
181 /* TODO: should actually remember the previously used seq#, both for TX
182 * and RX from each STA.. */
184 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
185 0, 1, seq, 6, key, keylen);
189 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
191 struct wpa_supplicant *wpa_s = eloop_ctx;
192 const u8 *bssid = wpa_s->bssid;
193 if (is_zero_ether_addr(bssid))
194 bssid = wpa_s->pending_bssid;
195 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
197 wpa_blacklist_add(wpa_s, bssid);
198 wpa_sm_notify_disassoc(wpa_s->wpa);
199 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
200 wpa_s->reassociate = 1;
201 wpa_supplicant_req_scan(wpa_s, 0, 0);
206 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
207 * @wpa_s: Pointer to wpa_supplicant data
208 * @sec: Number of seconds after which to time out authentication
209 * @usec: Number of microseconds after which to time out authentication
211 * This function is used to schedule a timeout for the current authentication
214 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
217 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
218 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
221 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
222 "%d usec", sec, usec);
223 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
224 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
229 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
230 * @wpa_s: Pointer to wpa_supplicant data
232 * This function is used to cancel authentication timeout scheduled with
233 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
236 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
238 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
239 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
240 wpa_blacklist_del(wpa_s, wpa_s->bssid);
245 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
246 * @wpa_s: Pointer to wpa_supplicant data
248 * This function is used to configure EAPOL state machine based on the selected
249 * authentication mode.
251 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
253 #ifdef IEEE8021X_EAPOL
254 struct eapol_config eapol_conf;
255 struct wpa_ssid *ssid = wpa_s->current_ssid;
257 #ifdef CONFIG_IBSS_RSN
258 if (ssid->mode == IEEE80211_MODE_IBSS &&
259 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
260 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
262 * RSN IBSS authentication is per-STA and we can disable the
263 * per-BSSID EAPOL authentication.
265 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
266 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
267 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
270 #endif /* CONFIG_IBSS_RSN */
272 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
273 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
275 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
276 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
277 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
279 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
281 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
282 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
283 eapol_conf.accept_802_1x_keys = 1;
284 eapol_conf.required_keys = 0;
285 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
286 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
288 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
289 eapol_conf.required_keys |=
290 EAPOL_REQUIRE_KEY_BROADCAST;
293 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
294 eapol_conf.required_keys = 0;
297 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
298 eapol_conf.workaround = ssid->eap_workaround;
299 eapol_conf.eap_disabled =
300 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
301 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
302 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
303 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
304 #endif /* IEEE8021X_EAPOL */
309 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
310 * @wpa_s: Pointer to wpa_supplicant data
311 * @ssid: Configuration data for the network
313 * This function is used to configure WPA state machine and related parameters
314 * to a mode where WPA is not enabled. This is called as part of the
315 * authentication configuration when the selected network does not use WPA.
317 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
318 struct wpa_ssid *ssid)
322 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
323 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
324 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
325 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
327 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
328 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
329 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
330 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
331 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
332 wpa_s->group_cipher = WPA_CIPHER_NONE;
333 wpa_s->mgmt_group_cipher = 0;
335 for (i = 0; i < NUM_WEP_KEYS; i++) {
336 if (ssid->wep_key_len[i] > 5) {
337 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
338 wpa_s->group_cipher = WPA_CIPHER_WEP104;
340 } else if (ssid->wep_key_len[i] > 0) {
341 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
342 wpa_s->group_cipher = WPA_CIPHER_WEP40;
347 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
348 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
349 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
350 wpa_s->pairwise_cipher);
351 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
352 #ifdef CONFIG_IEEE80211W
353 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
354 wpa_s->mgmt_group_cipher);
355 #endif /* CONFIG_IEEE80211W */
357 pmksa_cache_clear_current(wpa_s->wpa);
361 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
363 scard_deinit(wpa_s->scard);
365 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
366 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
367 l2_packet_deinit(wpa_s->l2);
370 l2_packet_deinit(wpa_s->l2_br);
374 if (wpa_s->ctrl_iface) {
375 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
376 wpa_s->ctrl_iface = NULL;
378 if (wpa_s->conf != NULL) {
379 wpa_config_free(wpa_s->conf);
383 os_free(wpa_s->confname);
384 wpa_s->confname = NULL;
386 wpa_sm_set_eapol(wpa_s->wpa, NULL);
387 eapol_sm_deinit(wpa_s->eapol);
390 rsn_preauth_deinit(wpa_s->wpa);
392 pmksa_candidate_free(wpa_s->wpa);
393 wpa_sm_deinit(wpa_s->wpa);
395 wpa_blacklist_clear(wpa_s);
397 wpa_scan_results_free(wpa_s->scan_res);
398 wpa_s->scan_res = NULL;
400 wpa_supplicant_cancel_scan(wpa_s);
401 wpa_supplicant_cancel_auth_timeout(wpa_s);
403 ieee80211_sta_deinit(wpa_s);
405 wpas_wps_deinit(wpa_s);
407 #ifdef CONFIG_IBSS_RSN
408 ibss_rsn_deinit(wpa_s->ibss_rsn);
409 wpa_s->ibss_rsn = NULL;
410 #endif /* CONFIG_IBSS_RSN */
413 os_free(wpa_s->sme.ft_ies);
414 wpa_s->sme.ft_ies = NULL;
415 wpa_s->sme.ft_ies_len = 0;
416 #endif /* CONFIG_SME */
419 wpa_supplicant_ap_deinit(wpa_s);
420 #endif /* CONFIG_AP */
425 * wpa_clear_keys - Clear keys configured for the driver
426 * @wpa_s: Pointer to wpa_supplicant data
427 * @addr: Previously used BSSID or %NULL if not available
429 * This function clears the encryption keys that has been previously configured
432 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
434 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
436 if (wpa_s->keys_cleared) {
437 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
438 * timing issues with keys being cleared just before new keys
439 * are set or just after association or something similar. This
440 * shows up in group key handshake failing often because of the
441 * client not receiving the first encrypted packets correctly.
442 * Skipping some of the extra key clearing steps seems to help
443 * in completing group key handshake more reliably. */
444 wpa_printf(MSG_DEBUG, "No keys have been configured - "
445 "skip key clearing");
449 /* MLME-DELETEKEYS.request */
450 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
451 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
452 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
453 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
455 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
457 /* MLME-SETPROTECTION.request(None) */
458 wpa_drv_mlme_setprotection(
460 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
461 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
463 wpa_s->keys_cleared = 1;
468 * wpa_supplicant_state_txt - Get the connection state name as a text string
469 * @state: State (wpa_state; WPA_*)
470 * Returns: The state name as a printable text string
472 const char * wpa_supplicant_state_txt(int state)
475 case WPA_DISCONNECTED:
476 return "DISCONNECTED";
481 case WPA_AUTHENTICATING:
482 return "AUTHENTICATING";
483 case WPA_ASSOCIATING:
484 return "ASSOCIATING";
487 case WPA_4WAY_HANDSHAKE:
488 return "4WAY_HANDSHAKE";
489 case WPA_GROUP_HANDSHAKE:
490 return "GROUP_HANDSHAKE";
500 * wpa_supplicant_set_state - Set current connection state
501 * @wpa_s: Pointer to wpa_supplicant data
502 * @state: The new connection state
504 * This function is called whenever the connection state changes, e.g.,
505 * association is completed for WPA/WPA2 4-Way Handshake is started.
507 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
509 wpa_printf(MSG_DEBUG, "State: %s -> %s",
510 wpa_supplicant_state_txt(wpa_s->wpa_state),
511 wpa_supplicant_state_txt(state));
513 wpa_supplicant_dbus_notify_state_change(wpa_s, state,
516 if (state == WPA_COMPLETED && wpa_s->new_connection) {
517 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
518 struct wpa_ssid *ssid = wpa_s->current_ssid;
519 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
520 MACSTR " completed %s [id=%d id_str=%s]",
521 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
522 "(reauth)" : "(auth)",
523 ssid ? ssid->id : -1,
524 ssid && ssid->id_str ? ssid->id_str : "");
525 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
526 wpa_s->new_connection = 0;
527 wpa_s->reassociated_connection = 1;
528 wpa_drv_set_operstate(wpa_s, 1);
529 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
530 state == WPA_ASSOCIATED) {
531 wpa_s->new_connection = 1;
532 wpa_drv_set_operstate(wpa_s, 0);
534 wpa_s->wpa_state = state;
538 static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
541 struct wpa_global *global = eloop_ctx;
542 struct wpa_supplicant *wpa_s;
543 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
544 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
551 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
553 wpa_s->pairwise_cipher = 0;
554 wpa_s->group_cipher = 0;
555 wpa_s->mgmt_group_cipher = 0;
557 wpa_s->wpa_state = WPA_DISCONNECTED;
562 * wpa_supplicant_reload_configuration - Reload configuration data
563 * @wpa_s: Pointer to wpa_supplicant data
564 * Returns: 0 on success or -1 if configuration parsing failed
566 * This function can be used to request that the configuration data is reloaded
567 * (e.g., after configuration file change). This function is reloading
568 * configuration only for one interface, so this may need to be called multiple
569 * times if %wpa_supplicant is controlling multiple interfaces and all
570 * interfaces need reconfiguration.
572 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
574 struct wpa_config *conf;
576 if (wpa_s->confname == NULL)
578 conf = wpa_config_read(wpa_s->confname);
580 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
581 "file '%s' - exiting", wpa_s->confname);
585 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
586 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
587 os_strcmp(conf->ctrl_interface,
588 wpa_s->conf->ctrl_interface) != 0);
590 if (reconf_ctrl && wpa_s->ctrl_iface) {
591 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
592 wpa_s->ctrl_iface = NULL;
595 eapol_sm_invalidate_cached_session(wpa_s->eapol);
596 wpa_s->current_ssid = NULL;
598 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
599 * pkcs11_engine_path, pkcs11_module_path.
601 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
603 * Clear forced success to clear EAP state for next
606 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
608 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
609 wpa_sm_set_config(wpa_s->wpa, NULL);
610 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
611 rsn_preauth_deinit(wpa_s->wpa);
612 wpa_config_free(wpa_s->conf);
615 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
617 wpa_supplicant_clear_status(wpa_s);
618 wpa_s->reassociate = 1;
619 wpa_supplicant_req_scan(wpa_s, 0, 0);
620 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
625 static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
628 struct wpa_global *global = eloop_ctx;
629 struct wpa_supplicant *wpa_s;
630 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
631 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
632 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
639 static wpa_cipher cipher_suite2driver(int cipher)
642 case WPA_CIPHER_NONE:
644 case WPA_CIPHER_WEP40:
646 case WPA_CIPHER_WEP104:
647 return CIPHER_WEP104;
648 case WPA_CIPHER_CCMP:
650 case WPA_CIPHER_TKIP:
657 static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
660 case WPA_KEY_MGMT_NONE:
661 return KEY_MGMT_NONE;
662 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
663 return KEY_MGMT_802_1X_NO_WPA;
664 case WPA_KEY_MGMT_IEEE8021X:
665 return KEY_MGMT_802_1X;
666 case WPA_KEY_MGMT_WPA_NONE:
667 return KEY_MGMT_WPA_NONE;
668 case WPA_KEY_MGMT_FT_IEEE8021X:
669 return KEY_MGMT_FT_802_1X;
670 case WPA_KEY_MGMT_FT_PSK:
671 return KEY_MGMT_FT_PSK;
672 case WPA_KEY_MGMT_IEEE8021X_SHA256:
673 return KEY_MGMT_802_1X_SHA256;
674 case WPA_KEY_MGMT_PSK_SHA256:
675 return KEY_MGMT_PSK_SHA256;
676 case WPA_KEY_MGMT_WPS:
678 case WPA_KEY_MGMT_PSK:
685 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
686 struct wpa_ssid *ssid,
687 struct wpa_ie_data *ie)
689 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
692 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
693 "from association info");
698 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
700 if (!(ie->group_cipher & ssid->group_cipher)) {
701 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
702 "cipher 0x%x (mask 0x%x) - reject",
703 ie->group_cipher, ssid->group_cipher);
706 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
707 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
708 "cipher 0x%x (mask 0x%x) - reject",
709 ie->pairwise_cipher, ssid->pairwise_cipher);
712 if (!(ie->key_mgmt & ssid->key_mgmt)) {
713 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
714 "management 0x%x (mask 0x%x) - reject",
715 ie->key_mgmt, ssid->key_mgmt);
719 #ifdef CONFIG_IEEE80211W
720 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
721 ssid->ieee80211w == IEEE80211W_REQUIRED) {
722 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
723 "that does not support management frame protection - "
727 #endif /* CONFIG_IEEE80211W */
734 * wpa_supplicant_set_suites - Set authentication and encryption parameters
735 * @wpa_s: Pointer to wpa_supplicant data
736 * @bss: Scan results for the selected BSS, or %NULL if not available
737 * @ssid: Configuration data for the selected network
738 * @wpa_ie: Buffer for the WPA/RSN IE
739 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
740 * used buffer length in case the functions returns success.
741 * Returns: 0 on success or -1 on failure
743 * This function is used to configure authentication and encryption parameters
744 * based on the network configuration and scan result for the selected BSS (if
747 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
748 struct wpa_scan_res *bss,
749 struct wpa_ssid *ssid,
750 u8 *wpa_ie, size_t *wpa_ie_len)
752 struct wpa_ie_data ie;
754 const u8 *bss_wpa, *bss_rsn;
757 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
758 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
760 bss_wpa = bss_rsn = NULL;
762 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
763 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
764 (ie.group_cipher & ssid->group_cipher) &&
765 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
766 (ie.key_mgmt & ssid->key_mgmt)) {
767 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
768 proto = WPA_PROTO_RSN;
769 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
770 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
771 (ie.group_cipher & ssid->group_cipher) &&
772 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
773 (ie.key_mgmt & ssid->key_mgmt)) {
774 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
775 proto = WPA_PROTO_WPA;
777 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
780 if (ssid->proto & WPA_PROTO_RSN)
781 proto = WPA_PROTO_RSN;
783 proto = WPA_PROTO_WPA;
784 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
785 os_memset(&ie, 0, sizeof(ie));
786 ie.group_cipher = ssid->group_cipher;
787 ie.pairwise_cipher = ssid->pairwise_cipher;
788 ie.key_mgmt = ssid->key_mgmt;
789 #ifdef CONFIG_IEEE80211W
790 ie.mgmt_group_cipher =
791 ssid->ieee80211w != NO_IEEE80211W ?
792 WPA_CIPHER_AES_128_CMAC : 0;
793 #endif /* CONFIG_IEEE80211W */
794 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
800 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
801 "pairwise %d key_mgmt %d proto %d",
802 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
803 #ifdef CONFIG_IEEE80211W
804 if (ssid->ieee80211w) {
805 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
806 ie.mgmt_group_cipher);
808 #endif /* CONFIG_IEEE80211W */
810 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
811 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
812 !!(ssid->proto & WPA_PROTO_RSN));
814 if (bss || !wpa_s->ap_ies_from_associnfo) {
815 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
816 bss_wpa ? 2 + bss_wpa[1] : 0) ||
817 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
818 bss_rsn ? 2 + bss_rsn[1] : 0))
822 sel = ie.group_cipher & ssid->group_cipher;
823 if (sel & WPA_CIPHER_CCMP) {
824 wpa_s->group_cipher = WPA_CIPHER_CCMP;
825 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
826 } else if (sel & WPA_CIPHER_TKIP) {
827 wpa_s->group_cipher = WPA_CIPHER_TKIP;
828 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
829 } else if (sel & WPA_CIPHER_WEP104) {
830 wpa_s->group_cipher = WPA_CIPHER_WEP104;
831 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
832 } else if (sel & WPA_CIPHER_WEP40) {
833 wpa_s->group_cipher = WPA_CIPHER_WEP40;
834 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
836 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
840 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
841 if (sel & WPA_CIPHER_CCMP) {
842 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
843 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
844 } else if (sel & WPA_CIPHER_TKIP) {
845 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
846 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
847 } else if (sel & WPA_CIPHER_NONE) {
848 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
849 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
851 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
856 sel = ie.key_mgmt & ssid->key_mgmt;
858 #ifdef CONFIG_IEEE80211R
859 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
860 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
861 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
862 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
863 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
864 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
865 #endif /* CONFIG_IEEE80211R */
866 #ifdef CONFIG_IEEE80211W
867 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
868 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
869 wpa_msg(wpa_s, MSG_DEBUG,
870 "WPA: using KEY_MGMT 802.1X with SHA256");
871 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
872 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
873 wpa_msg(wpa_s, MSG_DEBUG,
874 "WPA: using KEY_MGMT PSK with SHA256");
875 #endif /* CONFIG_IEEE80211W */
876 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
877 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
878 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
879 } else if (sel & WPA_KEY_MGMT_PSK) {
880 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
881 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
882 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
883 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
884 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
886 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
887 "key management type.");
891 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
892 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
893 wpa_s->pairwise_cipher);
894 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
896 #ifdef CONFIG_IEEE80211W
897 sel = ie.mgmt_group_cipher;
898 if (ssid->ieee80211w == NO_IEEE80211W ||
899 !(ie.capabilities & WPA_CAPABILITY_MFPC))
901 if (sel & WPA_CIPHER_AES_128_CMAC) {
902 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
903 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
906 wpa_s->mgmt_group_cipher = 0;
907 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
909 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
910 wpa_s->mgmt_group_cipher);
911 #endif /* CONFIG_IEEE80211W */
913 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
914 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
919 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
920 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
922 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
929 * wpa_supplicant_associate - Request association
930 * @wpa_s: Pointer to wpa_supplicant data
931 * @bss: Scan results for the selected BSS, or %NULL if not available
932 * @ssid: Configuration data for the selected network
934 * This function is used to request %wpa_supplicant to associate with a BSS.
936 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
937 struct wpa_scan_res *bss, struct wpa_ssid *ssid)
941 int use_crypt, ret, i;
942 int algs = AUTH_ALG_OPEN_SYSTEM;
943 wpa_cipher cipher_pairwise, cipher_group;
944 struct wpa_driver_associate_params params;
945 int wep_keys_set = 0;
946 struct wpa_driver_capa capa;
947 int assoc_failed = 0;
949 if (ssid->mode == 2) {
951 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
952 wpa_printf(MSG_INFO, "Driver does not support AP "
956 wpa_supplicant_create_ap(wpa_s, ssid);
957 #else /* CONFIG_AP */
958 wpa_printf(MSG_ERROR, "AP mode support not included in the "
960 #endif /* CONFIG_AP */
964 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
965 sme_authenticate(wpa_s, bss, ssid);
969 wpa_s->reassociate = 0;
971 #ifdef CONFIG_IEEE80211R
973 #endif /* CONFIG_IEEE80211R */
974 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
975 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
976 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
977 ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
978 os_memset(wpa_s->bssid, 0, ETH_ALEN);
979 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
980 #ifdef CONFIG_IEEE80211R
981 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
982 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
984 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
986 /* Prepare for the next transition */
987 wpa_ft_prepare_auth_request(wpa_s->wpa);
989 #endif /* CONFIG_IEEE80211R */
991 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
992 wpa_s->conf->ap_scan == 2 &&
993 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
994 /* Use ap_scan==1 style network selection to find the network
997 wpa_s->reassociate = 1;
998 wpa_supplicant_req_scan(wpa_s, 0, 0);
1000 #endif /* CONFIG_WPS */
1002 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1003 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1004 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1006 wpa_supplicant_cancel_scan(wpa_s);
1008 /* Starting new association, so clear the possibly used WPA IE from the
1009 * previous association. */
1010 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1012 if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
1013 wpa_printf(MSG_WARNING, "Failed to set operating mode");
1017 #ifdef IEEE8021X_EAPOL
1018 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1020 if (ssid->non_leap == 0)
1021 algs = AUTH_ALG_LEAP;
1023 algs |= AUTH_ALG_LEAP;
1026 #endif /* IEEE8021X_EAPOL */
1027 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
1028 if (ssid->auth_alg) {
1030 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
1031 algs |= AUTH_ALG_OPEN_SYSTEM;
1032 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
1033 algs |= AUTH_ALG_SHARED_KEY;
1034 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
1035 algs |= AUTH_ALG_LEAP;
1036 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1039 wpa_drv_set_auth_alg(wpa_s, algs);
1041 if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1042 wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
1043 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1044 WPA_KEY_MGMT_FT_IEEE8021X |
1045 WPA_KEY_MGMT_FT_PSK |
1046 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1047 WPA_KEY_MGMT_PSK_SHA256))) {
1048 int try_opportunistic;
1049 try_opportunistic = ssid->proactive_key_caching &&
1050 (ssid->proto & WPA_PROTO_RSN);
1051 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1052 wpa_s->current_ssid,
1053 try_opportunistic) == 0)
1054 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1055 wpa_ie_len = sizeof(wpa_ie);
1056 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1057 wpa_ie, &wpa_ie_len)) {
1058 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1059 "management and encryption suites");
1062 } else if (ssid->key_mgmt &
1063 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1064 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1065 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1066 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1067 wpa_ie_len = sizeof(wpa_ie);
1068 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1069 wpa_ie, &wpa_ie_len)) {
1070 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1071 "management and encryption suites (no scan "
1076 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1077 struct wpabuf *wps_ie;
1078 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1079 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1080 wpa_ie_len = wpabuf_len(wps_ie);
1081 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1084 wpabuf_free(wps_ie);
1085 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1086 #endif /* CONFIG_WPS */
1088 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1092 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1094 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1095 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1096 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1097 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1098 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1100 if (wpa_set_wep_keys(wpa_s, ssid)) {
1105 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1108 #ifdef IEEE8021X_EAPOL
1109 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1110 if ((ssid->eapol_flags &
1111 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1112 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1116 /* Assume that dynamic WEP-104 keys will be used and
1117 * set cipher suites in order for drivers to expect
1119 cipher_pairwise = cipher_group = CIPHER_WEP104;
1122 #endif /* IEEE8021X_EAPOL */
1124 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1125 /* Set the key before (and later after) association */
1126 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1129 wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1130 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1131 os_memset(¶ms, 0, sizeof(params));
1133 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1134 params.bssid = bss->bssid;
1135 params.ssid = ie ? ie + 2 : (u8 *) "";
1136 params.ssid_len = ie ? ie[1] : 0;
1137 params.freq = bss->freq;
1139 params.ssid = ssid->ssid;
1140 params.ssid_len = ssid->ssid_len;
1142 if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1143 params.freq = ssid->frequency; /* Initial channel for IBSS */
1144 params.wpa_ie = wpa_ie;
1145 params.wpa_ie_len = wpa_ie_len;
1146 params.pairwise_suite = cipher_pairwise;
1147 params.group_suite = cipher_group;
1148 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1149 params.auth_alg = algs;
1150 params.mode = ssid->mode;
1151 for (i = 0; i < NUM_WEP_KEYS; i++) {
1152 if (ssid->wep_key_len[i])
1153 params.wep_key[i] = ssid->wep_key[i];
1154 params.wep_key_len[i] = ssid->wep_key_len[i];
1156 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1158 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1159 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1160 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1161 params.passphrase = ssid->passphrase;
1163 params.psk = ssid->psk;
1166 params.drop_unencrypted = use_crypt;
1168 #ifdef CONFIG_IEEE80211W
1169 switch (ssid->ieee80211w) {
1171 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1173 case IEEE80211W_OPTIONAL:
1174 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1176 case IEEE80211W_REQUIRED:
1177 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1180 if (ssid->ieee80211w != NO_IEEE80211W && bss) {
1181 const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1182 struct wpa_ie_data ie;
1183 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1185 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1186 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1188 params.mgmt_frame_protection =
1189 MGMT_FRAME_PROTECTION_REQUIRED;
1192 #endif /* CONFIG_IEEE80211W */
1194 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1195 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1197 ret = wpa_drv_associate(wpa_s, ¶ms);
1199 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1201 /* try to continue anyway; new association will be tried again
1206 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1207 /* Set the key after the association just in case association
1208 * cleared the previously configured key. */
1209 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1210 /* No need to timeout authentication since there is no key
1212 wpa_supplicant_cancel_auth_timeout(wpa_s);
1213 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1214 #ifdef CONFIG_IBSS_RSN
1215 } else if (ssid->mode == IEEE80211_MODE_IBSS &&
1216 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1217 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1218 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1220 * RSN IBSS authentication is per-STA and we can disable the
1221 * per-BSSID authentication.
1223 wpa_supplicant_cancel_auth_timeout(wpa_s);
1224 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1225 #endif /* CONFIG_IBSS_RSN */
1227 /* Timeout for IEEE 802.11 authentication and association */
1231 /* give IBSS a bit more time */
1232 timeout = ssid->mode ? 10 : 5;
1233 } else if (wpa_s->conf->ap_scan == 1) {
1234 /* give IBSS a bit more time */
1235 timeout = ssid->mode ? 20 : 10;
1237 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1240 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1241 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1242 /* Set static WEP keys again */
1243 wpa_set_wep_keys(wpa_s, ssid);
1246 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1248 * Do not allow EAP session resumption between different
1249 * network configurations.
1251 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1253 wpa_s->current_ssid = ssid;
1254 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1255 wpa_supplicant_initiate_eapol(wpa_s);
1260 * wpa_supplicant_disassociate - Disassociate the current connection
1261 * @wpa_s: Pointer to wpa_supplicant data
1262 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1264 * This function is used to request %wpa_supplicant to disassociate with the
1267 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1271 if (!is_zero_ether_addr(wpa_s->bssid)) {
1272 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1273 ieee80211_sta_disassociate(wpa_s, reason_code);
1275 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1276 addr = wpa_s->bssid;
1278 wpa_clear_keys(wpa_s, addr);
1279 wpa_supplicant_mark_disassoc(wpa_s);
1280 wpa_s->current_ssid = NULL;
1281 wpa_sm_set_config(wpa_s->wpa, NULL);
1282 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1287 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1288 * @wpa_s: Pointer to wpa_supplicant data
1289 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1291 * This function is used to request %wpa_supplicant to deauthenticate from the
1294 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1298 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1299 if (!is_zero_ether_addr(wpa_s->bssid)) {
1300 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1301 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1303 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1305 addr = wpa_s->bssid;
1307 wpa_clear_keys(wpa_s, addr);
1308 wpa_s->current_ssid = NULL;
1309 wpa_sm_set_config(wpa_s->wpa, NULL);
1310 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1311 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1312 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1316 static int wpa_supplicant_get_scan_results_old(struct wpa_supplicant *wpa_s)
1318 #define SCAN_AP_LIMIT 128
1319 struct wpa_scan_result *results;
1321 struct wpa_scan_results *res;
1323 results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1324 if (results == NULL) {
1325 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1330 num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1331 wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1333 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1337 if (num > SCAN_AP_LIMIT) {
1338 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1339 num, SCAN_AP_LIMIT);
1340 num = SCAN_AP_LIMIT;
1343 wpa_scan_results_free(wpa_s->scan_res);
1344 wpa_s->scan_res = NULL;
1346 /* Convert old scan result data structure to the new one */
1347 res = os_zalloc(sizeof(*res));
1352 res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1353 if (res->res == NULL) {
1359 for (i = 0; i < num; i++) {
1360 struct wpa_scan_result *bss = &results[i];
1361 struct wpa_scan_res *r;
1365 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1368 if (bss->mdie_present)
1371 r = os_zalloc(sizeof(*r) + ie_len);
1375 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1376 r->freq = bss->freq;
1377 r->caps = bss->caps;
1378 r->qual = bss->qual;
1379 r->noise = bss->noise;
1380 r->level = bss->level;
1384 pos = (u8 *) (r + 1);
1387 *pos++ = WLAN_EID_SSID;
1388 *pos++ = bss->ssid_len;
1389 os_memcpy(pos, bss->ssid, bss->ssid_len);
1390 pos += bss->ssid_len;
1393 /* Fake Supported Rate IE to include max rate */
1394 *pos++ = WLAN_EID_SUPP_RATES;
1396 *pos++ = bss->maxrate;
1399 if (bss->rsn_ie_len) {
1400 os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1401 pos += bss->rsn_ie_len;
1404 if (bss->mdie_present) {
1405 os_memcpy(pos, bss->mdie, 5);
1409 if (bss->wpa_ie_len) {
1410 os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1411 pos += bss->wpa_ie_len;
1414 res->res[res->num++] = r;
1418 wpa_s->scan_res = res;
1425 * wpa_supplicant_get_scan_results - Get scan results
1426 * @wpa_s: Pointer to wpa_supplicant data
1427 * Returns: 0 on success, -1 on failure
1429 * This function is request the current scan results from the driver and stores
1430 * a local copy of the results in wpa_s->scan_res.
1432 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1436 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1437 wpa_scan_results_free(wpa_s->scan_res);
1438 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1439 if (wpa_s->scan_res == NULL) {
1440 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1444 } else if (wpa_s->driver->get_scan_results2 == NULL)
1445 ret = wpa_supplicant_get_scan_results_old(wpa_s);
1447 wpa_scan_results_free(wpa_s->scan_res);
1448 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1449 if (wpa_s->scan_res == NULL) {
1450 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1456 if (wpa_s->scan_res)
1457 wpa_scan_sort_results(wpa_s->scan_res);
1464 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1465 * @wpa_s: Pointer to wpa_supplicant data
1466 * Returns: A pointer to the current network structure or %NULL on failure
1468 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1470 struct wpa_ssid *entry;
1471 u8 ssid[MAX_SSID_LEN];
1477 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1478 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1479 wpa_printf(MSG_WARNING, "Could not read SSID from "
1484 res = wpa_drv_get_ssid(wpa_s, ssid);
1486 wpa_printf(MSG_WARNING, "Could not read SSID from "
1493 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1494 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1495 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1496 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1500 wired = wpa_s->conf->ap_scan == 0 &&
1501 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
1503 entry = wpa_s->conf->ssid;
1505 if (!entry->disabled &&
1506 ((ssid_len == entry->ssid_len &&
1507 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1508 (!entry->bssid_set ||
1509 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1512 if (!entry->disabled &&
1513 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1514 (entry->ssid == NULL || entry->ssid_len == 0) &&
1515 (!entry->bssid_set ||
1516 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1518 #endif /* CONFIG_WPS */
1519 entry = entry->next;
1526 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1536 if (wpa_supplicant_drivers[0] == NULL) {
1537 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1543 /* default to first driver in the list */
1544 wpa_s->driver = wpa_supplicant_drivers[0];
1548 pos = os_strchr(name, ',');
1552 len = os_strlen(name);
1553 for (i = 0; wpa_supplicant_drivers[i]; i++) {
1554 if (os_strlen(wpa_supplicant_drivers[i]->name) == len &&
1555 os_strncmp(name, wpa_supplicant_drivers[i]->name, len) ==
1557 wpa_s->driver = wpa_supplicant_drivers[i];
1562 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1567 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1568 const u8 *buf, size_t len)
1570 struct wpa_supplicant *wpa_s = ctx;
1572 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1573 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1575 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1576 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1577 "no key management is configured");
1581 if (wpa_s->eapol_received == 0 &&
1582 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
1583 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1584 wpa_s->wpa_state != WPA_COMPLETED)) {
1585 /* Timeout for completing IEEE 802.1X and WPA authentication */
1586 wpa_supplicant_req_auth_timeout(
1588 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1589 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1590 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1593 wpa_s->eapol_received++;
1595 if (wpa_s->countermeasures) {
1596 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1601 #ifdef CONFIG_IBSS_RSN
1602 if (wpa_s->current_ssid &&
1603 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS) {
1604 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1607 #endif /* CONFIG_IBSS_RSN */
1609 /* Source address of the incoming EAPOL frame could be compared to the
1610 * current BSSID. However, it is possible that a centralized
1611 * Authenticator could be using another MAC address than the BSSID of
1612 * an AP, so just allow any address to be used for now. The replies are
1613 * still sent to the current BSSID (if available), though. */
1615 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1616 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1617 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1619 wpa_drv_poll(wpa_s);
1620 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1621 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1622 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1624 * Set portValid = TRUE here since we are going to skip 4-way
1625 * handshake processing which would normally set portValid. We
1626 * need this to allow the EAPOL state machines to be completed
1627 * without going through EAPOL-Key handshake.
1629 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1634 void wpa_supplicant_sta_free_hw_features(struct wpa_hw_modes *hw_features,
1635 size_t num_hw_features)
1637 ieee80211_sta_free_hw_features(hw_features, num_hw_features);
1641 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1642 struct ieee80211_rx_status *rx_status)
1644 struct wpa_supplicant *wpa_s = ctx;
1645 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1650 * wpa_supplicant_driver_init - Initialize driver interface parameters
1651 * @wpa_s: Pointer to wpa_supplicant data
1652 * Returns: 0 on success, -1 on failure
1654 * This function is called to initialize driver interface parameters.
1655 * wpa_drv_init() must have been called before this function to initialize the
1658 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1660 static int interface_count = 0;
1662 if (wpa_s->driver->send_eapol) {
1663 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1665 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1667 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1668 wpa_drv_get_mac_addr(wpa_s),
1670 wpa_supplicant_rx_eapol, wpa_s, 0);
1671 if (wpa_s->l2 == NULL)
1675 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1676 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1680 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1681 MAC2STR(wpa_s->own_addr));
1683 if (wpa_s->bridge_ifname[0]) {
1684 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1685 " '%s'", wpa_s->bridge_ifname);
1686 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1689 wpa_supplicant_rx_eapol, wpa_s,
1691 if (wpa_s->l2_br == NULL) {
1692 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1693 "connection for the bridge interface '%s'",
1694 wpa_s->bridge_ifname);
1699 /* Backwards compatibility call to set_wpa() handler. This is called
1700 * only just after init and just before deinit, so these handler can be
1701 * used to implement same functionality. */
1702 if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1703 struct wpa_driver_capa capa;
1704 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1705 !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1706 WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1707 wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1708 /* Continue to allow non-WPA modes to be used. */
1710 wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1716 wpa_clear_keys(wpa_s, NULL);
1718 /* Make sure that TKIP countermeasures are not left enabled (could
1719 * happen if wpa_supplicant is killed during countermeasures. */
1720 wpa_drv_set_countermeasures(wpa_s, 0);
1722 wpa_drv_set_drop_unencrypted(wpa_s, 1);
1724 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1725 wpa_drv_flush_pmkid(wpa_s);
1727 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1728 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1735 static int wpa_supplicant_daemon(const char *pid_file)
1737 wpa_printf(MSG_DEBUG, "Daemonize..");
1738 return os_daemonize(pid_file);
1742 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1744 struct wpa_supplicant *wpa_s;
1746 wpa_s = os_zalloc(sizeof(*wpa_s));
1749 wpa_s->scan_req = 1;
1755 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1756 struct wpa_interface *iface)
1758 const char *ifname, *driver;
1759 struct wpa_driver_capa capa;
1761 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1762 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1763 iface->confname ? iface->confname : "N/A",
1764 iface->driver ? iface->driver : "default",
1765 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1766 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1768 if (iface->confname) {
1769 #ifdef CONFIG_BACKEND_FILE
1770 wpa_s->confname = os_rel2abs_path(iface->confname);
1771 if (wpa_s->confname == NULL) {
1772 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1773 "for configuration file '%s'.",
1777 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1778 iface->confname, wpa_s->confname);
1779 #else /* CONFIG_BACKEND_FILE */
1780 wpa_s->confname = os_strdup(iface->confname);
1781 #endif /* CONFIG_BACKEND_FILE */
1782 wpa_s->conf = wpa_config_read(wpa_s->confname);
1783 if (wpa_s->conf == NULL) {
1784 wpa_printf(MSG_ERROR, "Failed to read or parse "
1785 "configuration '%s'.", wpa_s->confname);
1790 * Override ctrl_interface and driver_param if set on command
1793 if (iface->ctrl_interface) {
1794 os_free(wpa_s->conf->ctrl_interface);
1795 wpa_s->conf->ctrl_interface =
1796 os_strdup(iface->ctrl_interface);
1799 if (iface->driver_param) {
1800 os_free(wpa_s->conf->driver_param);
1801 wpa_s->conf->driver_param =
1802 os_strdup(iface->driver_param);
1805 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1806 iface->driver_param);
1808 if (wpa_s->conf == NULL) {
1809 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1813 if (iface->ifname == NULL) {
1814 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1817 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1818 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1822 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1824 if (iface->bridge_ifname) {
1825 if (os_strlen(iface->bridge_ifname) >=
1826 sizeof(wpa_s->bridge_ifname)) {
1827 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1828 "name '%s'.", iface->bridge_ifname);
1831 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1832 sizeof(wpa_s->bridge_ifname));
1835 /* RSNA Supplicant Key Management - INITIALIZE */
1836 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1837 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1839 /* Initialize driver interface and register driver event handler before
1840 * L2 receive handler so that association events are processed before
1841 * EAPOL-Key packets if both become available for the same select()
1843 driver = iface->driver;
1845 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
1848 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1849 if (wpa_s->drv_priv == NULL) {
1851 pos = os_strchr(driver, ',');
1853 wpa_printf(MSG_DEBUG, "Failed to initialize driver "
1854 "interface - try next driver wrapper");
1858 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1861 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1862 wpa_printf(MSG_ERROR, "Driver interface rejected "
1863 "driver_param '%s'", wpa_s->conf->driver_param);
1867 ifname = wpa_drv_get_ifname(wpa_s);
1868 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1869 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
1870 "name with '%s'", ifname);
1871 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
1874 if (wpa_supplicant_init_wpa(wpa_s) < 0)
1877 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
1878 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
1880 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
1882 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
1883 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
1884 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
1885 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1886 "dot11RSNAConfigPMKLifetime");
1890 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
1891 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
1892 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
1893 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1894 "dot11RSNAConfigPMKReauthThreshold");
1898 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
1899 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
1900 wpa_s->conf->dot11RSNAConfigSATimeout)) {
1901 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1902 "dot11RSNAConfigSATimeout");
1906 if (wpa_supplicant_driver_init(wpa_s) < 0)
1909 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
1910 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
1911 wpa_printf(MSG_DEBUG, "Failed to set country");
1915 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
1917 if (wpas_wps_init(wpa_s))
1920 if (wpa_supplicant_init_eapol(wpa_s) < 0)
1922 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
1924 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
1925 if (wpa_s->ctrl_iface == NULL) {
1926 wpa_printf(MSG_ERROR,
1927 "Failed to initialize control interface '%s'.\n"
1928 "You may have another wpa_supplicant process "
1929 "already running or the file was\n"
1930 "left by an unclean termination of wpa_supplicant "
1931 "in which case you will need\n"
1932 "to manually remove this file before starting "
1933 "wpa_supplicant again.\n",
1934 wpa_s->conf->ctrl_interface);
1938 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
1939 wpa_s->drv_flags = capa.flags;
1940 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1941 if (ieee80211_sta_init(wpa_s))
1944 wpa_s->max_scan_ssids = capa.max_scan_ssids;
1947 #ifdef CONFIG_IBSS_RSN
1948 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1949 if (!wpa_s->ibss_rsn) {
1950 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
1953 #endif /* CONFIG_IBSS_RSN */
1959 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
1961 if (wpa_s->drv_priv) {
1962 wpa_supplicant_deauthenticate(wpa_s,
1963 WLAN_REASON_DEAUTH_LEAVING);
1965 /* Backwards compatibility call to set_wpa() handler. This is
1966 * called only just after init and just before deinit, so these
1967 * handler can be used to implement same functionality. */
1968 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
1969 wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
1973 wpa_drv_set_drop_unencrypted(wpa_s, 0);
1974 wpa_drv_set_countermeasures(wpa_s, 0);
1975 wpa_clear_keys(wpa_s, NULL);
1978 wpas_dbus_unregister_iface(wpa_s);
1980 wpa_supplicant_cleanup(wpa_s);
1982 if (wpa_s->drv_priv)
1983 wpa_drv_deinit(wpa_s);
1988 * wpa_supplicant_add_iface - Add a new network interface
1989 * @global: Pointer to global data from wpa_supplicant_init()
1990 * @iface: Interface configuration options
1991 * Returns: Pointer to the created interface or %NULL on failure
1993 * This function is used to add new network interfaces for %wpa_supplicant.
1994 * This can be called before wpa_supplicant_run() to add interfaces before the
1995 * main event loop has been started. In addition, new interfaces can be added
1996 * dynamically while %wpa_supplicant is already running. This could happen,
1997 * e.g., when a hotplug network adapter is inserted.
1999 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2000 struct wpa_interface *iface)
2002 struct wpa_supplicant *wpa_s;
2004 if (global == NULL || iface == NULL)
2007 wpa_s = wpa_supplicant_alloc();
2011 if (wpa_supplicant_init_iface(wpa_s, iface)) {
2012 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2014 wpa_supplicant_deinit_iface(wpa_s);
2019 wpa_s->global = global;
2021 /* Register the interface with the dbus control interface */
2022 if (wpas_dbus_register_iface(wpa_s)) {
2023 wpa_supplicant_deinit_iface(wpa_s);
2028 wpa_s->next = global->ifaces;
2029 global->ifaces = wpa_s;
2031 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
2038 * wpa_supplicant_remove_iface - Remove a network interface
2039 * @global: Pointer to global data from wpa_supplicant_init()
2040 * @wpa_s: Pointer to the network interface to be removed
2041 * Returns: 0 if interface was removed, -1 if interface was not found
2043 * This function can be used to dynamically remove network interfaces from
2044 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2045 * addition, this function is used to remove all remaining interfaces when
2046 * %wpa_supplicant is terminated.
2048 int wpa_supplicant_remove_iface(struct wpa_global *global,
2049 struct wpa_supplicant *wpa_s)
2051 struct wpa_supplicant *prev;
2053 /* Remove interface from the global list of interfaces */
2054 prev = global->ifaces;
2055 if (prev == wpa_s) {
2056 global->ifaces = wpa_s->next;
2058 while (prev && prev->next != wpa_s)
2062 prev->next = wpa_s->next;
2065 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2067 wpa_supplicant_deinit_iface(wpa_s);
2075 * wpa_supplicant_get_iface - Get a new network interface
2076 * @global: Pointer to global data from wpa_supplicant_init()
2077 * @ifname: Interface name
2078 * Returns: Pointer to the interface or %NULL if not found
2080 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2083 struct wpa_supplicant *wpa_s;
2085 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2086 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2094 * wpa_supplicant_init - Initialize %wpa_supplicant
2095 * @params: Parameters for %wpa_supplicant
2096 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2098 * This function is used to initialize %wpa_supplicant. After successful
2099 * initialization, the returned data pointer can be used to add and remove
2100 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2102 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2104 struct wpa_global *global;
2110 wpa_debug_open_file(params->wpa_debug_file_path);
2111 if (params->wpa_debug_syslog)
2112 wpa_debug_open_syslog();
2114 ret = eap_peer_register_methods();
2116 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2118 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2119 "the same EAP type.");
2123 global = os_zalloc(sizeof(*global));
2126 global->params.daemonize = params->daemonize;
2127 global->params.wait_for_monitor = params->wait_for_monitor;
2128 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2129 if (params->pid_file)
2130 global->params.pid_file = os_strdup(params->pid_file);
2131 if (params->ctrl_interface)
2132 global->params.ctrl_interface =
2133 os_strdup(params->ctrl_interface);
2134 wpa_debug_level = global->params.wpa_debug_level =
2135 params->wpa_debug_level;
2136 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2137 params->wpa_debug_show_keys;
2138 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2139 params->wpa_debug_timestamp;
2141 if (eloop_init(global)) {
2142 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2143 wpa_supplicant_deinit(global);
2147 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2148 if (global->ctrl_iface == NULL) {
2149 wpa_supplicant_deinit(global);
2153 if (global->params.dbus_ctrl_interface) {
2154 global->dbus_ctrl_iface =
2155 wpa_supplicant_dbus_ctrl_iface_init(global);
2156 if (global->dbus_ctrl_iface == NULL) {
2157 wpa_supplicant_deinit(global);
2162 for (i = 0; wpa_supplicant_drivers[i]; i++)
2163 global->drv_count++;
2164 if (global->drv_count == 0) {
2165 wpa_printf(MSG_ERROR, "No drivers enabled");
2166 wpa_supplicant_deinit(global);
2169 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2170 if (global->drv_priv == NULL) {
2171 wpa_supplicant_deinit(global);
2174 for (i = 0; wpa_supplicant_drivers[i]; i++) {
2175 if (!wpa_supplicant_drivers[i]->global_init)
2177 global->drv_priv[i] = wpa_supplicant_drivers[i]->global_init();
2178 if (global->drv_priv[i] == NULL) {
2179 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2180 "'%s'", wpa_supplicant_drivers[i]->name);
2181 wpa_supplicant_deinit(global);
2191 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2192 * @global: Pointer to global data from wpa_supplicant_init()
2193 * Returns: 0 after successful event loop run, -1 on failure
2195 * This function starts the main event loop and continues running as long as
2196 * there are any remaining events. In most cases, this function is running as
2197 * long as the %wpa_supplicant process in still in use.
2199 int wpa_supplicant_run(struct wpa_global *global)
2201 struct wpa_supplicant *wpa_s;
2203 if (global->params.daemonize &&
2204 wpa_supplicant_daemon(global->params.pid_file))
2207 if (global->params.wait_for_monitor) {
2208 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2209 if (wpa_s->ctrl_iface)
2210 wpa_supplicant_ctrl_iface_wait(
2214 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2215 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2224 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2225 * @global: Pointer to global data from wpa_supplicant_init()
2227 * This function is called to deinitialize %wpa_supplicant and to free all
2228 * allocated resources. Remaining network interfaces will also be removed.
2230 void wpa_supplicant_deinit(struct wpa_global *global)
2237 while (global->ifaces)
2238 wpa_supplicant_remove_iface(global, global->ifaces);
2240 if (global->ctrl_iface)
2241 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2242 if (global->dbus_ctrl_iface)
2243 wpa_supplicant_dbus_ctrl_iface_deinit(global->dbus_ctrl_iface);
2245 eap_peer_unregister_methods();
2247 for (i = 0; wpa_supplicant_drivers[i] && global->drv_priv; i++) {
2248 if (!global->drv_priv[i])
2250 wpa_supplicant_drivers[i]->global_deinit(global->drv_priv[i]);
2252 os_free(global->drv_priv);
2256 if (global->params.pid_file) {
2257 os_daemonize_terminate(global->params.pid_file);
2258 os_free(global->params.pid_file);
2260 os_free(global->params.ctrl_interface);
2263 wpa_debug_close_syslog();
2264 wpa_debug_close_file();