3 * Copyright (c) 2003-2011, 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 "crypto/random.h"
23 #include "crypto/sha1.h"
24 #include "eapol_supp/eapol_supp_sm.h"
25 #include "eap_peer/eap.h"
26 #include "eap_server/eap_methods.h"
27 #include "rsn_supp/wpa.h"
30 #include "l2_packet/l2_packet.h"
31 #include "wpa_supplicant_i.h"
33 #include "ctrl_iface.h"
34 #include "pcsc_funcs.h"
35 #include "common/version.h"
36 #include "rsn_supp/preauth.h"
37 #include "rsn_supp/pmksa_cache.h"
38 #include "common/wpa_ctrl.h"
39 #include "common/ieee802_11_defs.h"
41 #include "blacklist.h"
42 #include "wpas_glue.h"
43 #include "wps_supplicant.h"
46 #include "gas_query.h"
48 #include "p2p_supplicant.h"
53 #include "offchannel.h"
55 const char *wpa_supplicant_version
=
56 "wpa_supplicant v" VERSION_STR
"\n"
57 "Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi> and contributors";
59 const char *wpa_supplicant_license
=
60 "This program is free software. You can distribute it and/or modify it\n"
61 "under the terms of the GNU General Public License version 2.\n"
63 "Alternatively, this software may be distributed under the terms of the\n"
64 "BSD license. See README and COPYING for more details.\n"
65 #ifdef EAP_TLS_OPENSSL
66 "\nThis product includes software developed by the OpenSSL Project\n"
67 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
68 #endif /* EAP_TLS_OPENSSL */
71 #ifndef CONFIG_NO_STDOUT_DEBUG
72 /* Long text divided into parts in order to fit in C89 strings size limits. */
73 const char *wpa_supplicant_full_license1
=
74 "This program is free software; you can redistribute it and/or modify\n"
75 "it under the terms of the GNU General Public License version 2 as\n"
76 "published by the Free Software Foundation.\n"
78 "This program is distributed in the hope that it will be useful,\n"
79 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
80 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
81 "GNU General Public License for more details.\n"
83 const char *wpa_supplicant_full_license2
=
84 "You should have received a copy of the GNU General Public License\n"
85 "along with this program; if not, write to the Free Software\n"
86 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
88 "Alternatively, this software may be distributed under the terms of the\n"
91 "Redistribution and use in source and binary forms, with or without\n"
92 "modification, are permitted provided that the following conditions are\n"
95 const char *wpa_supplicant_full_license3
=
96 "1. Redistributions of source code must retain the above copyright\n"
97 " notice, this list of conditions and the following disclaimer.\n"
99 "2. Redistributions in binary form must reproduce the above copyright\n"
100 " notice, this list of conditions and the following disclaimer in the\n"
101 " documentation and/or other materials provided with the distribution.\n"
103 const char *wpa_supplicant_full_license4
=
104 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
105 " names of its contributors may be used to endorse or promote products\n"
106 " derived from this software without specific prior written permission.\n"
108 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
109 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
110 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
111 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
112 const char *wpa_supplicant_full_license5
=
113 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
114 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
115 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
116 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
117 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
118 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
119 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
121 #endif /* CONFIG_NO_STDOUT_DEBUG */
123 extern int wpa_debug_level
;
124 extern int wpa_debug_show_keys
;
125 extern int wpa_debug_timestamp
;
126 extern struct wpa_driver_ops
*wpa_drivers
[];
128 /* Configure default/group WEP keys for static WEP */
129 int wpa_set_wep_keys(struct wpa_supplicant
*wpa_s
, struct wpa_ssid
*ssid
)
133 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
134 if (ssid
->wep_key_len
[i
] == 0)
138 wpa_drv_set_key(wpa_s
, WPA_ALG_WEP
, NULL
,
139 i
, i
== ssid
->wep_tx_keyidx
, NULL
, 0,
140 ssid
->wep_key
[i
], ssid
->wep_key_len
[i
]);
147 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant
*wpa_s
,
148 struct wpa_ssid
*ssid
)
155 /* IBSS/WPA-None uses only one key (Group) for both receiving and
156 * sending unicast and multicast packets. */
158 if (ssid
->mode
!= WPAS_MODE_IBSS
) {
159 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Invalid mode %d (not "
160 "IBSS/ad-hoc) for WPA-None", ssid
->mode
);
164 if (!ssid
->psk_set
) {
165 wpa_msg(wpa_s
, MSG_INFO
, "WPA: No PSK configured for "
170 switch (wpa_s
->group_cipher
) {
171 case WPA_CIPHER_CCMP
:
172 os_memcpy(key
, ssid
->psk
, 16);
176 case WPA_CIPHER_TKIP
:
177 /* WPA-None uses the same Michael MIC key for both TX and RX */
178 os_memcpy(key
, ssid
->psk
, 16 + 8);
179 os_memcpy(key
+ 16 + 8, ssid
->psk
+ 16, 8);
184 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Invalid group cipher %d for "
185 "WPA-None", wpa_s
->group_cipher
);
189 /* TODO: should actually remember the previously used seq#, both for TX
190 * and RX from each STA.. */
192 return wpa_drv_set_key(wpa_s
, alg
, NULL
, 0, 1, seq
, 6, key
, keylen
);
196 static void wpa_supplicant_timeout(void *eloop_ctx
, void *timeout_ctx
)
198 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
199 const u8
*bssid
= wpa_s
->bssid
;
200 if (is_zero_ether_addr(bssid
))
201 bssid
= wpa_s
->pending_bssid
;
202 wpa_msg(wpa_s
, MSG_INFO
, "Authentication with " MACSTR
" timed out.",
204 wpa_blacklist_add(wpa_s
, bssid
);
205 wpa_sm_notify_disassoc(wpa_s
->wpa
);
206 wpa_supplicant_disassociate(wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
207 wpa_s
->reassociate
= 1;
210 * If we timed out, the AP or the local radio may be busy.
211 * So, wait a second until scanning again.
213 wpa_supplicant_req_scan(wpa_s
, 1, 0);
218 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
219 * @wpa_s: Pointer to wpa_supplicant data
220 * @sec: Number of seconds after which to time out authentication
221 * @usec: Number of microseconds after which to time out authentication
223 * This function is used to schedule a timeout for the current authentication
226 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant
*wpa_s
,
229 if (wpa_s
->conf
&& wpa_s
->conf
->ap_scan
== 0 &&
230 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
))
233 wpa_dbg(wpa_s
, MSG_DEBUG
, "Setting authentication timeout: %d sec "
234 "%d usec", sec
, usec
);
235 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
236 eloop_register_timeout(sec
, usec
, wpa_supplicant_timeout
, wpa_s
, NULL
);
241 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
242 * @wpa_s: Pointer to wpa_supplicant data
244 * This function is used to cancel authentication timeout scheduled with
245 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
248 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant
*wpa_s
)
250 wpa_dbg(wpa_s
, MSG_DEBUG
, "Cancelling authentication timeout");
251 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
252 wpa_blacklist_del(wpa_s
, wpa_s
->bssid
);
257 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
258 * @wpa_s: Pointer to wpa_supplicant data
260 * This function is used to configure EAPOL state machine based on the selected
261 * authentication mode.
263 void wpa_supplicant_initiate_eapol(struct wpa_supplicant
*wpa_s
)
265 #ifdef IEEE8021X_EAPOL
266 struct eapol_config eapol_conf
;
267 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
269 #ifdef CONFIG_IBSS_RSN
270 if (ssid
->mode
== WPAS_MODE_IBSS
&&
271 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_NONE
&&
272 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPA_NONE
) {
274 * RSN IBSS authentication is per-STA and we can disable the
275 * per-BSSID EAPOL authentication.
277 eapol_sm_notify_portControl(wpa_s
->eapol
, ForceAuthorized
);
278 eapol_sm_notify_eap_success(wpa_s
->eapol
, TRUE
);
279 eapol_sm_notify_eap_fail(wpa_s
->eapol
, FALSE
);
282 #endif /* CONFIG_IBSS_RSN */
284 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
285 eapol_sm_notify_eap_fail(wpa_s
->eapol
, FALSE
);
287 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
288 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
)
289 eapol_sm_notify_portControl(wpa_s
->eapol
, ForceAuthorized
);
291 eapol_sm_notify_portControl(wpa_s
->eapol
, Auto
);
293 os_memset(&eapol_conf
, 0, sizeof(eapol_conf
));
294 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
295 eapol_conf
.accept_802_1x_keys
= 1;
296 eapol_conf
.required_keys
= 0;
297 if (ssid
->eapol_flags
& EAPOL_FLAG_REQUIRE_KEY_UNICAST
) {
298 eapol_conf
.required_keys
|= EAPOL_REQUIRE_KEY_UNICAST
;
300 if (ssid
->eapol_flags
& EAPOL_FLAG_REQUIRE_KEY_BROADCAST
) {
301 eapol_conf
.required_keys
|=
302 EAPOL_REQUIRE_KEY_BROADCAST
;
305 if (wpa_s
->conf
&& (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
))
306 eapol_conf
.required_keys
= 0;
309 eapol_conf
.fast_reauth
= wpa_s
->conf
->fast_reauth
;
310 eapol_conf
.workaround
= ssid
->eap_workaround
;
311 eapol_conf
.eap_disabled
=
312 !wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) &&
313 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_IEEE8021X_NO_WPA
&&
314 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPS
;
315 eapol_sm_notify_config(wpa_s
->eapol
, &ssid
->eap
, &eapol_conf
);
316 #endif /* IEEE8021X_EAPOL */
321 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
322 * @wpa_s: Pointer to wpa_supplicant data
323 * @ssid: Configuration data for the network
325 * This function is used to configure WPA state machine and related parameters
326 * to a mode where WPA is not enabled. This is called as part of the
327 * authentication configuration when the selected network does not use WPA.
329 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant
*wpa_s
,
330 struct wpa_ssid
*ssid
)
334 if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)
335 wpa_s
->key_mgmt
= WPA_KEY_MGMT_WPS
;
336 else if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
)
337 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X_NO_WPA
;
339 wpa_s
->key_mgmt
= WPA_KEY_MGMT_NONE
;
340 wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, NULL
, 0);
341 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, NULL
, 0);
342 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
343 wpa_s
->pairwise_cipher
= WPA_CIPHER_NONE
;
344 wpa_s
->group_cipher
= WPA_CIPHER_NONE
;
345 wpa_s
->mgmt_group_cipher
= 0;
347 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
348 if (ssid
->wep_key_len
[i
] > 5) {
349 wpa_s
->pairwise_cipher
= WPA_CIPHER_WEP104
;
350 wpa_s
->group_cipher
= WPA_CIPHER_WEP104
;
352 } else if (ssid
->wep_key_len
[i
] > 0) {
353 wpa_s
->pairwise_cipher
= WPA_CIPHER_WEP40
;
354 wpa_s
->group_cipher
= WPA_CIPHER_WEP40
;
359 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_RSN_ENABLED
, 0);
360 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_KEY_MGMT
, wpa_s
->key_mgmt
);
361 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PAIRWISE
,
362 wpa_s
->pairwise_cipher
);
363 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_GROUP
, wpa_s
->group_cipher
);
364 #ifdef CONFIG_IEEE80211W
365 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MGMT_GROUP
,
366 wpa_s
->mgmt_group_cipher
);
367 #endif /* CONFIG_IEEE80211W */
369 pmksa_cache_clear_current(wpa_s
->wpa
);
373 static void wpa_supplicant_cleanup(struct wpa_supplicant
*wpa_s
)
375 bgscan_deinit(wpa_s
);
376 scard_deinit(wpa_s
->scard
);
378 wpa_sm_set_scard_ctx(wpa_s
->wpa
, NULL
);
379 eapol_sm_register_scard_ctx(wpa_s
->eapol
, NULL
);
380 l2_packet_deinit(wpa_s
->l2
);
383 l2_packet_deinit(wpa_s
->l2_br
);
387 if (wpa_s
->ctrl_iface
) {
388 wpa_supplicant_ctrl_iface_deinit(wpa_s
->ctrl_iface
);
389 wpa_s
->ctrl_iface
= NULL
;
391 if (wpa_s
->conf
!= NULL
) {
392 struct wpa_ssid
*ssid
;
393 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
)
394 wpas_notify_network_removed(wpa_s
, ssid
);
395 wpa_config_free(wpa_s
->conf
);
399 os_free(wpa_s
->confname
);
400 wpa_s
->confname
= NULL
;
402 wpa_sm_set_eapol(wpa_s
->wpa
, NULL
);
403 eapol_sm_deinit(wpa_s
->eapol
);
406 rsn_preauth_deinit(wpa_s
->wpa
);
409 wpa_tdls_deinit(wpa_s
->wpa
);
410 #endif /* CONFIG_TDLS */
412 pmksa_candidate_free(wpa_s
->wpa
);
413 wpa_sm_deinit(wpa_s
->wpa
);
415 wpa_blacklist_clear(wpa_s
);
417 wpa_bss_deinit(wpa_s
);
419 wpa_supplicant_cancel_scan(wpa_s
);
420 wpa_supplicant_cancel_auth_timeout(wpa_s
);
422 wpas_wps_deinit(wpa_s
);
424 wpabuf_free(wpa_s
->pending_eapol_rx
);
425 wpa_s
->pending_eapol_rx
= NULL
;
427 #ifdef CONFIG_IBSS_RSN
428 ibss_rsn_deinit(wpa_s
->ibss_rsn
);
429 wpa_s
->ibss_rsn
= NULL
;
430 #endif /* CONFIG_IBSS_RSN */
435 wpa_supplicant_ap_deinit(wpa_s
);
436 #endif /* CONFIG_AP */
439 wpas_p2p_deinit(wpa_s
);
440 #endif /* CONFIG_P2P */
442 #ifdef CONFIG_OFFCHANNEL
443 offchannel_deinit(wpa_s
);
444 #endif /* CONFIG_OFFCHANNEL */
446 wpa_supplicant_cancel_sched_scan(wpa_s
);
448 os_free(wpa_s
->next_scan_freqs
);
449 wpa_s
->next_scan_freqs
= NULL
;
451 gas_query_deinit(wpa_s
->gas
);
457 * wpa_clear_keys - Clear keys configured for the driver
458 * @wpa_s: Pointer to wpa_supplicant data
459 * @addr: Previously used BSSID or %NULL if not available
461 * This function clears the encryption keys that has been previously configured
464 void wpa_clear_keys(struct wpa_supplicant
*wpa_s
, const u8
*addr
)
466 if (wpa_s
->keys_cleared
) {
467 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
468 * timing issues with keys being cleared just before new keys
469 * are set or just after association or something similar. This
470 * shows up in group key handshake failing often because of the
471 * client not receiving the first encrypted packets correctly.
472 * Skipping some of the extra key clearing steps seems to help
473 * in completing group key handshake more reliably. */
474 wpa_dbg(wpa_s
, MSG_DEBUG
, "No keys have been configured - "
475 "skip key clearing");
479 /* MLME-DELETEKEYS.request */
480 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 0, 0, NULL
, 0, NULL
, 0);
481 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 1, 0, NULL
, 0, NULL
, 0);
482 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 2, 0, NULL
, 0, NULL
, 0);
483 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 3, 0, NULL
, 0, NULL
, 0);
484 #ifdef CONFIG_IEEE80211W
485 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 4, 0, NULL
, 0, NULL
, 0);
486 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 5, 0, NULL
, 0, NULL
, 0);
487 #endif /* CONFIG_IEEE80211W */
489 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, addr
, 0, 0, NULL
, 0, NULL
,
491 /* MLME-SETPROTECTION.request(None) */
492 wpa_drv_mlme_setprotection(
494 MLME_SETPROTECTION_PROTECT_TYPE_NONE
,
495 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE
);
497 wpa_s
->keys_cleared
= 1;
502 * wpa_supplicant_state_txt - Get the connection state name as a text string
503 * @state: State (wpa_state; WPA_*)
504 * Returns: The state name as a printable text string
506 const char * wpa_supplicant_state_txt(enum wpa_states state
)
509 case WPA_DISCONNECTED
:
510 return "DISCONNECTED";
513 case WPA_INTERFACE_DISABLED
:
514 return "INTERFACE_DISABLED";
517 case WPA_AUTHENTICATING
:
518 return "AUTHENTICATING";
519 case WPA_ASSOCIATING
:
520 return "ASSOCIATING";
523 case WPA_4WAY_HANDSHAKE
:
524 return "4WAY_HANDSHAKE";
525 case WPA_GROUP_HANDSHAKE
:
526 return "GROUP_HANDSHAKE";
537 static void wpa_supplicant_start_bgscan(struct wpa_supplicant
*wpa_s
)
539 if (wpas_driver_bss_selection(wpa_s
))
541 if (wpa_s
->current_ssid
== wpa_s
->bgscan_ssid
)
544 bgscan_deinit(wpa_s
);
545 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
->bgscan
) {
546 if (bgscan_init(wpa_s
, wpa_s
->current_ssid
)) {
547 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to initialize "
550 * Live without bgscan; it is only used as a roaming
551 * optimization, so the initial connection is not
555 wpa_s
->bgscan_ssid
= wpa_s
->current_ssid
;
557 wpa_s
->bgscan_ssid
= NULL
;
561 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant
*wpa_s
)
563 if (wpa_s
->bgscan_ssid
!= NULL
) {
564 bgscan_deinit(wpa_s
);
565 wpa_s
->bgscan_ssid
= NULL
;
569 #endif /* CONFIG_BGSCAN */
573 * wpa_supplicant_set_state - Set current connection state
574 * @wpa_s: Pointer to wpa_supplicant data
575 * @state: The new connection state
577 * This function is called whenever the connection state changes, e.g.,
578 * association is completed for WPA/WPA2 4-Way Handshake is started.
580 void wpa_supplicant_set_state(struct wpa_supplicant
*wpa_s
,
581 enum wpa_states state
)
583 enum wpa_states old_state
= wpa_s
->wpa_state
;
585 wpa_dbg(wpa_s
, MSG_DEBUG
, "State: %s -> %s",
586 wpa_supplicant_state_txt(wpa_s
->wpa_state
),
587 wpa_supplicant_state_txt(state
));
589 if (state
!= WPA_SCANNING
)
590 wpa_supplicant_notify_scanning(wpa_s
, 0);
592 if (state
== WPA_COMPLETED
&& wpa_s
->new_connection
) {
593 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
594 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
595 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_CONNECTED
"- Connection to "
596 MACSTR
" completed %s [id=%d id_str=%s]",
597 MAC2STR(wpa_s
->bssid
), wpa_s
->reassociated_connection
?
598 "(reauth)" : "(auth)",
599 ssid
? ssid
->id
: -1,
600 ssid
&& ssid
->id_str
? ssid
->id_str
: "");
601 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
602 wpa_s
->new_connection
= 0;
603 wpa_s
->reassociated_connection
= 1;
604 wpa_drv_set_operstate(wpa_s
, 1);
605 #ifndef IEEE8021X_EAPOL
606 wpa_drv_set_supp_port(wpa_s
, 1);
607 #endif /* IEEE8021X_EAPOL */
608 wpa_s
->after_wps
= 0;
610 wpas_p2p_completed(wpa_s
);
611 #endif /* CONFIG_P2P */
612 } else if (state
== WPA_DISCONNECTED
|| state
== WPA_ASSOCIATING
||
613 state
== WPA_ASSOCIATED
) {
614 wpa_s
->new_connection
= 1;
615 wpa_drv_set_operstate(wpa_s
, 0);
616 #ifndef IEEE8021X_EAPOL
617 wpa_drv_set_supp_port(wpa_s
, 0);
618 #endif /* IEEE8021X_EAPOL */
620 wpa_s
->wpa_state
= state
;
623 if (state
== WPA_COMPLETED
)
624 wpa_supplicant_start_bgscan(wpa_s
);
626 wpa_supplicant_stop_bgscan(wpa_s
);
627 #endif /* CONFIG_BGSCAN */
629 if (wpa_s
->wpa_state
!= old_state
) {
630 wpas_notify_state_changed(wpa_s
, wpa_s
->wpa_state
, old_state
);
632 if (wpa_s
->wpa_state
== WPA_COMPLETED
||
633 old_state
== WPA_COMPLETED
)
634 wpas_notify_auth_changed(wpa_s
);
639 void wpa_supplicant_terminate_proc(struct wpa_global
*global
)
643 struct wpa_supplicant
*wpa_s
= global
->ifaces
;
645 if (wpas_wps_terminate_pending(wpa_s
) == 1)
649 #endif /* CONFIG_WPS */
656 static void wpa_supplicant_terminate(int sig
, void *signal_ctx
)
658 struct wpa_global
*global
= signal_ctx
;
659 struct wpa_supplicant
*wpa_s
;
660 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
661 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_TERMINATING
"- signal %d "
664 wpa_supplicant_terminate_proc(global
);
668 void wpa_supplicant_clear_status(struct wpa_supplicant
*wpa_s
)
670 enum wpa_states old_state
= wpa_s
->wpa_state
;
672 wpa_s
->pairwise_cipher
= 0;
673 wpa_s
->group_cipher
= 0;
674 wpa_s
->mgmt_group_cipher
= 0;
676 if (wpa_s
->wpa_state
!= WPA_INTERFACE_DISABLED
)
677 wpa_s
->wpa_state
= WPA_DISCONNECTED
;
679 if (wpa_s
->wpa_state
!= old_state
)
680 wpas_notify_state_changed(wpa_s
, wpa_s
->wpa_state
, old_state
);
685 * wpa_supplicant_reload_configuration - Reload configuration data
686 * @wpa_s: Pointer to wpa_supplicant data
687 * Returns: 0 on success or -1 if configuration parsing failed
689 * This function can be used to request that the configuration data is reloaded
690 * (e.g., after configuration file change). This function is reloading
691 * configuration only for one interface, so this may need to be called multiple
692 * times if %wpa_supplicant is controlling multiple interfaces and all
693 * interfaces need reconfiguration.
695 int wpa_supplicant_reload_configuration(struct wpa_supplicant
*wpa_s
)
697 struct wpa_config
*conf
;
701 if (wpa_s
->confname
== NULL
)
703 conf
= wpa_config_read(wpa_s
->confname
);
705 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to parse the configuration "
706 "file '%s' - exiting", wpa_s
->confname
);
709 conf
->changed_parameters
= (unsigned int) -1;
711 reconf_ctrl
= !!conf
->ctrl_interface
!= !!wpa_s
->conf
->ctrl_interface
712 || (conf
->ctrl_interface
&& wpa_s
->conf
->ctrl_interface
&&
713 os_strcmp(conf
->ctrl_interface
,
714 wpa_s
->conf
->ctrl_interface
) != 0);
716 if (reconf_ctrl
&& wpa_s
->ctrl_iface
) {
717 wpa_supplicant_ctrl_iface_deinit(wpa_s
->ctrl_iface
);
718 wpa_s
->ctrl_iface
= NULL
;
721 eapol_sm_invalidate_cached_session(wpa_s
->eapol
);
722 if (wpa_s
->current_ssid
) {
723 wpa_supplicant_deauthenticate(wpa_s
,
724 WLAN_REASON_DEAUTH_LEAVING
);
728 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
729 * pkcs11_engine_path, pkcs11_module_path.
731 if (wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
)) {
733 * Clear forced success to clear EAP state for next
736 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
738 eapol_sm_notify_config(wpa_s
->eapol
, NULL
, NULL
);
739 wpa_sm_set_config(wpa_s
->wpa
, NULL
);
740 wpa_sm_pmksa_cache_flush(wpa_s
->wpa
, NULL
);
741 wpa_sm_set_fast_reauth(wpa_s
->wpa
, wpa_s
->conf
->fast_reauth
);
742 rsn_preauth_deinit(wpa_s
->wpa
);
744 old_ap_scan
= wpa_s
->conf
->ap_scan
;
745 wpa_config_free(wpa_s
->conf
);
747 if (old_ap_scan
!= wpa_s
->conf
->ap_scan
)
748 wpas_notify_ap_scan_changed(wpa_s
);
751 wpa_s
->ctrl_iface
= wpa_supplicant_ctrl_iface_init(wpa_s
);
753 wpa_supplicant_update_config(wpa_s
);
755 wpa_supplicant_clear_status(wpa_s
);
756 if (wpa_supplicant_enabled_networks(wpa_s
->conf
)) {
757 wpa_s
->reassociate
= 1;
758 wpa_supplicant_req_scan(wpa_s
, 0, 0);
760 wpa_dbg(wpa_s
, MSG_DEBUG
, "Reconfiguration completed");
765 static void wpa_supplicant_reconfig(int sig
, void *signal_ctx
)
767 struct wpa_global
*global
= signal_ctx
;
768 struct wpa_supplicant
*wpa_s
;
769 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
770 wpa_dbg(wpa_s
, MSG_DEBUG
, "Signal %d received - reconfiguring",
772 if (wpa_supplicant_reload_configuration(wpa_s
) < 0) {
773 wpa_supplicant_terminate_proc(global
);
779 enum wpa_cipher
cipher_suite2driver(int cipher
)
782 case WPA_CIPHER_NONE
:
784 case WPA_CIPHER_WEP40
:
786 case WPA_CIPHER_WEP104
:
787 return CIPHER_WEP104
;
788 case WPA_CIPHER_CCMP
:
790 case WPA_CIPHER_TKIP
:
797 enum wpa_key_mgmt
key_mgmt2driver(int key_mgmt
)
800 case WPA_KEY_MGMT_NONE
:
801 return KEY_MGMT_NONE
;
802 case WPA_KEY_MGMT_IEEE8021X_NO_WPA
:
803 return KEY_MGMT_802_1X_NO_WPA
;
804 case WPA_KEY_MGMT_IEEE8021X
:
805 return KEY_MGMT_802_1X
;
806 case WPA_KEY_MGMT_WPA_NONE
:
807 return KEY_MGMT_WPA_NONE
;
808 case WPA_KEY_MGMT_FT_IEEE8021X
:
809 return KEY_MGMT_FT_802_1X
;
810 case WPA_KEY_MGMT_FT_PSK
:
811 return KEY_MGMT_FT_PSK
;
812 case WPA_KEY_MGMT_IEEE8021X_SHA256
:
813 return KEY_MGMT_802_1X_SHA256
;
814 case WPA_KEY_MGMT_PSK_SHA256
:
815 return KEY_MGMT_PSK_SHA256
;
816 case WPA_KEY_MGMT_WPS
:
818 case WPA_KEY_MGMT_PSK
:
825 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant
*wpa_s
,
826 struct wpa_ssid
*ssid
,
827 struct wpa_ie_data
*ie
)
829 int ret
= wpa_sm_parse_own_wpa_ie(wpa_s
->wpa
, ie
);
832 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Failed to parse WPA IE "
833 "from association info");
838 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Using WPA IE from AssocReq to set "
840 if (!(ie
->group_cipher
& ssid
->group_cipher
)) {
841 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled group "
842 "cipher 0x%x (mask 0x%x) - reject",
843 ie
->group_cipher
, ssid
->group_cipher
);
846 if (!(ie
->pairwise_cipher
& ssid
->pairwise_cipher
)) {
847 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled pairwise "
848 "cipher 0x%x (mask 0x%x) - reject",
849 ie
->pairwise_cipher
, ssid
->pairwise_cipher
);
852 if (!(ie
->key_mgmt
& ssid
->key_mgmt
)) {
853 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled key "
854 "management 0x%x (mask 0x%x) - reject",
855 ie
->key_mgmt
, ssid
->key_mgmt
);
859 #ifdef CONFIG_IEEE80211W
860 if (!(ie
->capabilities
& WPA_CAPABILITY_MFPC
) &&
861 ssid
->ieee80211w
== MGMT_FRAME_PROTECTION_REQUIRED
) {
862 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver associated with an AP "
863 "that does not support management frame protection - "
867 #endif /* CONFIG_IEEE80211W */
874 * wpa_supplicant_set_suites - Set authentication and encryption parameters
875 * @wpa_s: Pointer to wpa_supplicant data
876 * @bss: Scan results for the selected BSS, or %NULL if not available
877 * @ssid: Configuration data for the selected network
878 * @wpa_ie: Buffer for the WPA/RSN IE
879 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
880 * used buffer length in case the functions returns success.
881 * Returns: 0 on success or -1 on failure
883 * This function is used to configure authentication and encryption parameters
884 * based on the network configuration and scan result for the selected BSS (if
887 int wpa_supplicant_set_suites(struct wpa_supplicant
*wpa_s
,
888 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
,
889 u8
*wpa_ie
, size_t *wpa_ie_len
)
891 struct wpa_ie_data ie
;
893 const u8
*bss_wpa
, *bss_rsn
;
896 bss_wpa
= wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
897 bss_rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
899 bss_wpa
= bss_rsn
= NULL
;
901 if (bss_rsn
&& (ssid
->proto
& WPA_PROTO_RSN
) &&
902 wpa_parse_wpa_ie(bss_rsn
, 2 + bss_rsn
[1], &ie
) == 0 &&
903 (ie
.group_cipher
& ssid
->group_cipher
) &&
904 (ie
.pairwise_cipher
& ssid
->pairwise_cipher
) &&
905 (ie
.key_mgmt
& ssid
->key_mgmt
)) {
906 wpa_dbg(wpa_s
, MSG_DEBUG
, "RSN: using IEEE 802.11i/D9.0");
907 proto
= WPA_PROTO_RSN
;
908 } else if (bss_wpa
&& (ssid
->proto
& WPA_PROTO_WPA
) &&
909 wpa_parse_wpa_ie(bss_wpa
, 2 +bss_wpa
[1], &ie
) == 0 &&
910 (ie
.group_cipher
& ssid
->group_cipher
) &&
911 (ie
.pairwise_cipher
& ssid
->pairwise_cipher
) &&
912 (ie
.key_mgmt
& ssid
->key_mgmt
)) {
913 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using IEEE 802.11i/D3.0");
914 proto
= WPA_PROTO_WPA
;
916 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select WPA/RSN");
919 if (ssid
->proto
& WPA_PROTO_RSN
)
920 proto
= WPA_PROTO_RSN
;
922 proto
= WPA_PROTO_WPA
;
923 if (wpa_supplicant_suites_from_ai(wpa_s
, ssid
, &ie
) < 0) {
924 os_memset(&ie
, 0, sizeof(ie
));
925 ie
.group_cipher
= ssid
->group_cipher
;
926 ie
.pairwise_cipher
= ssid
->pairwise_cipher
;
927 ie
.key_mgmt
= ssid
->key_mgmt
;
928 #ifdef CONFIG_IEEE80211W
929 ie
.mgmt_group_cipher
=
930 ssid
->ieee80211w
!= NO_MGMT_FRAME_PROTECTION
?
931 WPA_CIPHER_AES_128_CMAC
: 0;
932 #endif /* CONFIG_IEEE80211W */
933 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Set cipher suites "
934 "based on configuration");
939 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected cipher suites: group %d "
940 "pairwise %d key_mgmt %d proto %d",
941 ie
.group_cipher
, ie
.pairwise_cipher
, ie
.key_mgmt
, proto
);
942 #ifdef CONFIG_IEEE80211W
943 if (ssid
->ieee80211w
) {
944 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected mgmt group cipher %d",
945 ie
.mgmt_group_cipher
);
947 #endif /* CONFIG_IEEE80211W */
949 wpa_s
->wpa_proto
= proto
;
950 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PROTO
, proto
);
951 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_RSN_ENABLED
,
952 !!(ssid
->proto
& WPA_PROTO_RSN
));
954 if (bss
|| !wpa_s
->ap_ies_from_associnfo
) {
955 if (wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, bss_wpa
,
956 bss_wpa
? 2 + bss_wpa
[1] : 0) ||
957 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, bss_rsn
,
958 bss_rsn
? 2 + bss_rsn
[1] : 0))
962 sel
= ie
.group_cipher
& ssid
->group_cipher
;
963 if (sel
& WPA_CIPHER_CCMP
) {
964 wpa_s
->group_cipher
= WPA_CIPHER_CCMP
;
965 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK CCMP");
966 } else if (sel
& WPA_CIPHER_TKIP
) {
967 wpa_s
->group_cipher
= WPA_CIPHER_TKIP
;
968 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK TKIP");
969 } else if (sel
& WPA_CIPHER_WEP104
) {
970 wpa_s
->group_cipher
= WPA_CIPHER_WEP104
;
971 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK WEP104");
972 } else if (sel
& WPA_CIPHER_WEP40
) {
973 wpa_s
->group_cipher
= WPA_CIPHER_WEP40
;
974 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK WEP40");
976 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select group "
981 sel
= ie
.pairwise_cipher
& ssid
->pairwise_cipher
;
982 if (sel
& WPA_CIPHER_CCMP
) {
983 wpa_s
->pairwise_cipher
= WPA_CIPHER_CCMP
;
984 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK CCMP");
985 } else if (sel
& WPA_CIPHER_TKIP
) {
986 wpa_s
->pairwise_cipher
= WPA_CIPHER_TKIP
;
987 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK TKIP");
988 } else if (sel
& WPA_CIPHER_NONE
) {
989 wpa_s
->pairwise_cipher
= WPA_CIPHER_NONE
;
990 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK NONE");
992 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select pairwise "
997 sel
= ie
.key_mgmt
& ssid
->key_mgmt
;
999 #ifdef CONFIG_IEEE80211R
1000 } else if (sel
& WPA_KEY_MGMT_FT_IEEE8021X
) {
1001 wpa_s
->key_mgmt
= WPA_KEY_MGMT_FT_IEEE8021X
;
1002 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT FT/802.1X");
1003 } else if (sel
& WPA_KEY_MGMT_FT_PSK
) {
1004 wpa_s
->key_mgmt
= WPA_KEY_MGMT_FT_PSK
;
1005 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT FT/PSK");
1006 #endif /* CONFIG_IEEE80211R */
1007 #ifdef CONFIG_IEEE80211W
1008 } else if (sel
& WPA_KEY_MGMT_IEEE8021X_SHA256
) {
1009 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X_SHA256
;
1010 wpa_dbg(wpa_s
, MSG_DEBUG
,
1011 "WPA: using KEY_MGMT 802.1X with SHA256");
1012 } else if (sel
& WPA_KEY_MGMT_PSK_SHA256
) {
1013 wpa_s
->key_mgmt
= WPA_KEY_MGMT_PSK_SHA256
;
1014 wpa_dbg(wpa_s
, MSG_DEBUG
,
1015 "WPA: using KEY_MGMT PSK with SHA256");
1016 #endif /* CONFIG_IEEE80211W */
1017 } else if (sel
& WPA_KEY_MGMT_IEEE8021X
) {
1018 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X
;
1019 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT 802.1X");
1020 } else if (sel
& WPA_KEY_MGMT_PSK
) {
1021 wpa_s
->key_mgmt
= WPA_KEY_MGMT_PSK
;
1022 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT WPA-PSK");
1023 } else if (sel
& WPA_KEY_MGMT_WPA_NONE
) {
1024 wpa_s
->key_mgmt
= WPA_KEY_MGMT_WPA_NONE
;
1025 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT WPA-NONE");
1027 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select "
1028 "authenticated key management type");
1032 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_KEY_MGMT
, wpa_s
->key_mgmt
);
1033 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PAIRWISE
,
1034 wpa_s
->pairwise_cipher
);
1035 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_GROUP
, wpa_s
->group_cipher
);
1037 #ifdef CONFIG_IEEE80211W
1038 sel
= ie
.mgmt_group_cipher
;
1039 if (ssid
->ieee80211w
== NO_MGMT_FRAME_PROTECTION
||
1040 !(ie
.capabilities
& WPA_CAPABILITY_MFPC
))
1042 if (sel
& WPA_CIPHER_AES_128_CMAC
) {
1043 wpa_s
->mgmt_group_cipher
= WPA_CIPHER_AES_128_CMAC
;
1044 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using MGMT group cipher "
1047 wpa_s
->mgmt_group_cipher
= 0;
1048 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: not using MGMT group cipher");
1050 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MGMT_GROUP
,
1051 wpa_s
->mgmt_group_cipher
);
1052 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MFP
, ssid
->ieee80211w
);
1053 #endif /* CONFIG_IEEE80211W */
1055 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s
->wpa
, wpa_ie
, wpa_ie_len
)) {
1056 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to generate WPA IE");
1060 if (ssid
->key_mgmt
&
1061 (WPA_KEY_MGMT_PSK
| WPA_KEY_MGMT_FT_PSK
| WPA_KEY_MGMT_PSK_SHA256
))
1063 wpa_sm_set_pmk(wpa_s
->wpa
, ssid
->psk
, PMK_LEN
);
1064 #ifndef CONFIG_NO_PBKDF2
1065 if (bss
&& ssid
->bssid_set
&& ssid
->ssid_len
== 0 &&
1068 pbkdf2_sha1(ssid
->passphrase
, (char *) bss
->ssid
,
1069 bss
->ssid_len
, 4096, psk
, PMK_LEN
);
1070 wpa_hexdump_key(MSG_MSGDUMP
, "PSK (from passphrase)",
1072 wpa_sm_set_pmk(wpa_s
->wpa
, psk
, PMK_LEN
);
1074 #endif /* CONFIG_NO_PBKDF2 */
1076 wpa_sm_set_pmk_from_pmksa(wpa_s
->wpa
);
1083 * wpa_supplicant_associate - Request association
1084 * @wpa_s: Pointer to wpa_supplicant data
1085 * @bss: Scan results for the selected BSS, or %NULL if not available
1086 * @ssid: Configuration data for the selected network
1088 * This function is used to request %wpa_supplicant to associate with a BSS.
1090 void wpa_supplicant_associate(struct wpa_supplicant
*wpa_s
,
1091 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
)
1095 int use_crypt
, ret
, i
, bssid_changed
;
1096 int algs
= WPA_AUTH_ALG_OPEN
;
1097 enum wpa_cipher cipher_pairwise
, cipher_group
;
1098 struct wpa_driver_associate_params params
;
1099 int wep_keys_set
= 0;
1100 struct wpa_driver_capa capa
;
1101 int assoc_failed
= 0;
1102 struct wpa_ssid
*old_ssid
;
1104 #ifdef CONFIG_IBSS_RSN
1105 ibss_rsn_deinit(wpa_s
->ibss_rsn
);
1106 wpa_s
->ibss_rsn
= NULL
;
1107 #endif /* CONFIG_IBSS_RSN */
1109 if (ssid
->mode
== WPAS_MODE_AP
|| ssid
->mode
== WPAS_MODE_P2P_GO
||
1110 ssid
->mode
== WPAS_MODE_P2P_GROUP_FORMATION
) {
1112 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_AP
)) {
1113 wpa_msg(wpa_s
, MSG_INFO
, "Driver does not support AP "
1117 wpa_supplicant_create_ap(wpa_s
, ssid
);
1118 wpa_s
->current_bss
= bss
;
1119 #else /* CONFIG_AP */
1120 wpa_msg(wpa_s
, MSG_ERROR
, "AP mode support not included in "
1122 #endif /* CONFIG_AP */
1128 wpa_tdls_ap_ies(wpa_s
->wpa
, (const u8
*) (bss
+ 1),
1130 #endif /* CONFIG_TDLS */
1132 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
) &&
1133 ssid
->mode
== IEEE80211_MODE_INFRA
) {
1134 sme_authenticate(wpa_s
, bss
, ssid
);
1138 os_memset(¶ms
, 0, sizeof(params
));
1139 wpa_s
->reassociate
= 0;
1140 if (bss
&& !wpas_driver_bss_selection(wpa_s
)) {
1141 #ifdef CONFIG_IEEE80211R
1142 const u8
*ie
, *md
= NULL
;
1143 #endif /* CONFIG_IEEE80211R */
1144 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with " MACSTR
1145 " (SSID='%s' freq=%d MHz)", MAC2STR(bss
->bssid
),
1146 wpa_ssid_txt(bss
->ssid
, bss
->ssid_len
), bss
->freq
);
1147 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
1148 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
1149 os_memcpy(wpa_s
->pending_bssid
, bss
->bssid
, ETH_ALEN
);
1151 wpas_notify_bssid_changed(wpa_s
);
1152 #ifdef CONFIG_IEEE80211R
1153 ie
= wpa_bss_get_ie(bss
, WLAN_EID_MOBILITY_DOMAIN
);
1154 if (ie
&& ie
[1] >= MOBILITY_DOMAIN_ID_LEN
)
1156 wpa_sm_set_ft_params(wpa_s
->wpa
, ie
, ie
? 2 + ie
[1] : 0);
1158 /* Prepare for the next transition */
1159 wpa_ft_prepare_auth_request(wpa_s
->wpa
, ie
);
1161 #endif /* CONFIG_IEEE80211R */
1163 } else if ((ssid
->ssid
== NULL
|| ssid
->ssid_len
== 0) &&
1164 wpa_s
->conf
->ap_scan
== 2 &&
1165 (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)) {
1166 /* Use ap_scan==1 style network selection to find the network
1168 wpa_s
->scan_req
= 2;
1169 wpa_s
->reassociate
= 1;
1170 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1172 #endif /* CONFIG_WPS */
1174 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with SSID '%s'",
1175 wpa_ssid_txt(ssid
->ssid
, ssid
->ssid_len
));
1176 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1178 wpa_supplicant_cancel_sched_scan(wpa_s
);
1179 wpa_supplicant_cancel_scan(wpa_s
);
1181 /* Starting new association, so clear the possibly used WPA IE from the
1182 * previous association. */
1183 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
1185 #ifdef IEEE8021X_EAPOL
1186 if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1188 if (ssid
->non_leap
== 0)
1189 algs
= WPA_AUTH_ALG_LEAP
;
1191 algs
|= WPA_AUTH_ALG_LEAP
;
1194 #endif /* IEEE8021X_EAPOL */
1195 wpa_dbg(wpa_s
, MSG_DEBUG
, "Automatic auth_alg selection: 0x%x", algs
);
1196 if (ssid
->auth_alg
) {
1197 algs
= ssid
->auth_alg
;
1198 wpa_dbg(wpa_s
, MSG_DEBUG
, "Overriding auth_alg selection: "
1202 if (bss
&& (wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
) ||
1203 wpa_bss_get_ie(bss
, WLAN_EID_RSN
)) &&
1204 (ssid
->key_mgmt
& (WPA_KEY_MGMT_IEEE8021X
| WPA_KEY_MGMT_PSK
|
1205 WPA_KEY_MGMT_FT_IEEE8021X
|
1206 WPA_KEY_MGMT_FT_PSK
|
1207 WPA_KEY_MGMT_IEEE8021X_SHA256
|
1208 WPA_KEY_MGMT_PSK_SHA256
))) {
1209 int try_opportunistic
;
1210 try_opportunistic
= ssid
->proactive_key_caching
&&
1211 (ssid
->proto
& WPA_PROTO_RSN
);
1212 if (pmksa_cache_set_current(wpa_s
->wpa
, NULL
, bss
->bssid
,
1213 wpa_s
->current_ssid
,
1214 try_opportunistic
) == 0)
1215 eapol_sm_notify_pmkid_attempt(wpa_s
->eapol
, 1);
1216 wpa_ie_len
= sizeof(wpa_ie
);
1217 if (wpa_supplicant_set_suites(wpa_s
, bss
, ssid
,
1218 wpa_ie
, &wpa_ie_len
)) {
1219 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to set WPA "
1220 "key management and encryption suites");
1223 } else if (ssid
->key_mgmt
&
1224 (WPA_KEY_MGMT_PSK
| WPA_KEY_MGMT_IEEE8021X
|
1225 WPA_KEY_MGMT_WPA_NONE
| WPA_KEY_MGMT_FT_PSK
|
1226 WPA_KEY_MGMT_FT_IEEE8021X
| WPA_KEY_MGMT_PSK_SHA256
|
1227 WPA_KEY_MGMT_IEEE8021X_SHA256
)) {
1228 wpa_ie_len
= sizeof(wpa_ie
);
1229 if (wpa_supplicant_set_suites(wpa_s
, NULL
, ssid
,
1230 wpa_ie
, &wpa_ie_len
)) {
1231 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to set WPA "
1232 "key management and encryption suites (no "
1237 } else if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
1238 struct wpabuf
*wps_ie
;
1239 wps_ie
= wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid
));
1240 if (wps_ie
&& wpabuf_len(wps_ie
) <= sizeof(wpa_ie
)) {
1241 wpa_ie_len
= wpabuf_len(wps_ie
);
1242 os_memcpy(wpa_ie
, wpabuf_head(wps_ie
), wpa_ie_len
);
1245 wpabuf_free(wps_ie
);
1246 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
1247 if (!bss
|| (bss
->caps
& IEEE80211_CAP_PRIVACY
))
1248 params
.wps
= WPS_MODE_PRIVACY
;
1250 params
.wps
= WPS_MODE_OPEN
;
1251 wpa_s
->wpa_proto
= 0;
1252 #endif /* CONFIG_WPS */
1254 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
1256 wpa_s
->wpa_proto
= 0;
1260 if (wpa_s
->global
->p2p
) {
1265 p2p_group
= wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_P2P_CAPABLE
;
1266 pos
= wpa_ie
+ wpa_ie_len
;
1267 len
= sizeof(wpa_ie
) - wpa_ie_len
;
1268 res
= wpas_p2p_assoc_req_ie(wpa_s
, bss
, pos
, len
, p2p_group
);
1273 wpa_s
->cross_connect_disallowed
= 0;
1276 p2p
= wpa_bss_get_vendor_ie_multi(bss
, P2P_IE_VENDOR_TYPE
);
1278 wpa_s
->cross_connect_disallowed
=
1279 p2p_get_cross_connect_disallowed(p2p
);
1281 wpa_dbg(wpa_s
, MSG_DEBUG
, "P2P: WLAN AP %s cross "
1283 wpa_s
->cross_connect_disallowed
?
1284 "disallows" : "allows");
1287 #endif /* CONFIG_P2P */
1289 #ifdef CONFIG_INTERWORKING
1290 if (wpa_s
->conf
->interworking
) {
1292 if (wpa_ie_len
> 0 && pos
[0] == WLAN_EID_RSN
)
1294 os_memmove(pos
+ 6, pos
, wpa_ie_len
- (pos
- wpa_ie
));
1296 *pos
++ = WLAN_EID_EXT_CAPAB
;
1301 *pos
++ = 0x80; /* Bit 31 - Interworking */
1303 #endif /* CONFIG_INTERWORKING */
1305 wpa_clear_keys(wpa_s
, bss
? bss
->bssid
: NULL
);
1307 cipher_pairwise
= cipher_suite2driver(wpa_s
->pairwise_cipher
);
1308 cipher_group
= cipher_suite2driver(wpa_s
->group_cipher
);
1309 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
1310 wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1311 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
)
1313 if (wpa_set_wep_keys(wpa_s
, ssid
)) {
1318 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
)
1321 #ifdef IEEE8021X_EAPOL
1322 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1323 if ((ssid
->eapol_flags
&
1324 (EAPOL_FLAG_REQUIRE_KEY_UNICAST
|
1325 EAPOL_FLAG_REQUIRE_KEY_BROADCAST
)) == 0 &&
1329 /* Assume that dynamic WEP-104 keys will be used and
1330 * set cipher suites in order for drivers to expect
1332 cipher_pairwise
= cipher_group
= CIPHER_WEP104
;
1335 #endif /* IEEE8021X_EAPOL */
1337 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
) {
1338 /* Set the key before (and later after) association */
1339 wpa_supplicant_set_wpa_none_key(wpa_s
, ssid
);
1342 wpa_supplicant_set_state(wpa_s
, WPA_ASSOCIATING
);
1344 params
.ssid
= bss
->ssid
;
1345 params
.ssid_len
= bss
->ssid_len
;
1346 if (!wpas_driver_bss_selection(wpa_s
)) {
1347 params
.bssid
= bss
->bssid
;
1348 params
.freq
= bss
->freq
;
1351 params
.ssid
= ssid
->ssid
;
1352 params
.ssid_len
= ssid
->ssid_len
;
1354 if (ssid
->mode
== WPAS_MODE_IBSS
&& ssid
->frequency
> 0 &&
1356 params
.freq
= ssid
->frequency
; /* Initial channel for IBSS */
1357 params
.wpa_ie
= wpa_ie
;
1358 params
.wpa_ie_len
= wpa_ie_len
;
1359 params
.pairwise_suite
= cipher_pairwise
;
1360 params
.group_suite
= cipher_group
;
1361 params
.key_mgmt_suite
= key_mgmt2driver(wpa_s
->key_mgmt
);
1362 params
.wpa_proto
= wpa_s
->wpa_proto
;
1363 params
.auth_alg
= algs
;
1364 params
.mode
= ssid
->mode
;
1365 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
1366 if (ssid
->wep_key_len
[i
])
1367 params
.wep_key
[i
] = ssid
->wep_key
[i
];
1368 params
.wep_key_len
[i
] = ssid
->wep_key_len
[i
];
1370 params
.wep_tx_keyidx
= ssid
->wep_tx_keyidx
;
1372 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
) &&
1373 (params
.key_mgmt_suite
== KEY_MGMT_PSK
||
1374 params
.key_mgmt_suite
== KEY_MGMT_FT_PSK
)) {
1375 params
.passphrase
= ssid
->passphrase
;
1377 params
.psk
= ssid
->psk
;
1380 params
.drop_unencrypted
= use_crypt
;
1382 #ifdef CONFIG_IEEE80211W
1383 params
.mgmt_frame_protection
= ssid
->ieee80211w
;
1384 if (ssid
->ieee80211w
!= NO_MGMT_FRAME_PROTECTION
&& bss
) {
1385 const u8
*rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
1386 struct wpa_ie_data ie
;
1387 if (rsn
&& wpa_parse_wpa_ie(rsn
, 2 + rsn
[1], &ie
) == 0 &&
1389 (WPA_CAPABILITY_MFPC
| WPA_CAPABILITY_MFPR
)) {
1390 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected AP supports "
1391 "MFP: require MFP");
1392 params
.mgmt_frame_protection
=
1393 MGMT_FRAME_PROTECTION_REQUIRED
;
1396 #endif /* CONFIG_IEEE80211W */
1398 params
.p2p
= ssid
->p2p_group
;
1400 if (wpa_s
->parent
->set_sta_uapsd
)
1401 params
.uapsd
= wpa_s
->parent
->sta_uapsd
;
1405 ret
= wpa_drv_associate(wpa_s
, ¶ms
);
1407 wpa_msg(wpa_s
, MSG_INFO
, "Association request to the driver "
1409 if (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SANE_ERROR_CODES
) {
1411 * The driver is known to mean what is saying, so we
1412 * can stop right here; the association will not
1415 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
1416 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1419 /* try to continue anyway; new association will be tried again
1424 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
) {
1425 /* Set the key after the association just in case association
1426 * cleared the previously configured key. */
1427 wpa_supplicant_set_wpa_none_key(wpa_s
, ssid
);
1428 /* No need to timeout authentication since there is no key
1430 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1431 wpa_supplicant_set_state(wpa_s
, WPA_COMPLETED
);
1432 #ifdef CONFIG_IBSS_RSN
1433 } else if (ssid
->mode
== WPAS_MODE_IBSS
&&
1434 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_NONE
&&
1435 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPA_NONE
) {
1437 * RSN IBSS authentication is per-STA and we can disable the
1438 * per-BSSID authentication.
1440 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1441 #endif /* CONFIG_IBSS_RSN */
1443 /* Timeout for IEEE 802.11 authentication and association */
1447 /* give IBSS a bit more time */
1448 timeout
= ssid
->mode
== WPAS_MODE_IBSS
? 10 : 5;
1449 } else if (wpa_s
->conf
->ap_scan
== 1) {
1450 /* give IBSS a bit more time */
1451 timeout
= ssid
->mode
== WPAS_MODE_IBSS
? 20 : 10;
1453 wpa_supplicant_req_auth_timeout(wpa_s
, timeout
, 0);
1456 if (wep_keys_set
&& wpa_drv_get_capa(wpa_s
, &capa
) == 0 &&
1457 capa
.flags
& WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC
) {
1458 /* Set static WEP keys again */
1459 wpa_set_wep_keys(wpa_s
, ssid
);
1462 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
!= ssid
) {
1464 * Do not allow EAP session resumption between different
1465 * network configurations.
1467 eapol_sm_invalidate_cached_session(wpa_s
->eapol
);
1469 old_ssid
= wpa_s
->current_ssid
;
1470 wpa_s
->current_ssid
= ssid
;
1471 wpa_s
->current_bss
= bss
;
1472 wpa_supplicant_rsn_supp_set_config(wpa_s
, wpa_s
->current_ssid
);
1473 wpa_supplicant_initiate_eapol(wpa_s
);
1474 if (old_ssid
!= wpa_s
->current_ssid
)
1475 wpas_notify_network_changed(wpa_s
);
1479 static void wpa_supplicant_clear_connection(struct wpa_supplicant
*wpa_s
,
1482 struct wpa_ssid
*old_ssid
;
1484 wpa_clear_keys(wpa_s
, addr
);
1485 wpa_supplicant_mark_disassoc(wpa_s
);
1486 old_ssid
= wpa_s
->current_ssid
;
1487 wpa_s
->current_ssid
= NULL
;
1488 wpa_s
->current_bss
= NULL
;
1489 wpa_sm_set_config(wpa_s
->wpa
, NULL
);
1490 eapol_sm_notify_config(wpa_s
->eapol
, NULL
, NULL
);
1491 if (old_ssid
!= wpa_s
->current_ssid
)
1492 wpas_notify_network_changed(wpa_s
);
1493 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
1498 * wpa_supplicant_disassociate - Disassociate the current connection
1499 * @wpa_s: Pointer to wpa_supplicant data
1500 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1502 * This function is used to request %wpa_supplicant to disassociate with the
1505 void wpa_supplicant_disassociate(struct wpa_supplicant
*wpa_s
,
1510 if (!is_zero_ether_addr(wpa_s
->bssid
)) {
1511 wpa_drv_disassociate(wpa_s
, wpa_s
->bssid
, reason_code
);
1512 addr
= wpa_s
->bssid
;
1515 wpa_supplicant_clear_connection(wpa_s
, addr
);
1520 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1521 * @wpa_s: Pointer to wpa_supplicant data
1522 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1524 * This function is used to request %wpa_supplicant to deauthenticate from the
1527 void wpa_supplicant_deauthenticate(struct wpa_supplicant
*wpa_s
,
1532 if (!is_zero_ether_addr(wpa_s
->bssid
)) {
1533 wpa_drv_deauthenticate(wpa_s
, wpa_s
->bssid
, reason_code
);
1534 addr
= wpa_s
->bssid
;
1537 wpa_supplicant_clear_connection(wpa_s
, addr
);
1542 * wpa_supplicant_enable_network - Mark a configured network as enabled
1543 * @wpa_s: wpa_supplicant structure for a network interface
1544 * @ssid: wpa_ssid structure for a configured network or %NULL
1546 * Enables the specified network or all networks if no network specified.
1548 void wpa_supplicant_enable_network(struct wpa_supplicant
*wpa_s
,
1549 struct wpa_ssid
*ssid
)
1551 struct wpa_ssid
*other_ssid
;
1555 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1556 other_ssid
= other_ssid
->next
) {
1557 if (other_ssid
->disabled
== 2)
1558 continue; /* do not change persistent P2P group
1560 if (other_ssid
== wpa_s
->current_ssid
&&
1561 other_ssid
->disabled
)
1562 wpa_s
->reassociate
= 1;
1564 was_disabled
= other_ssid
->disabled
;
1566 other_ssid
->disabled
= 0;
1568 if (was_disabled
!= other_ssid
->disabled
)
1569 wpas_notify_network_enabled_changed(
1572 if (wpa_s
->reassociate
)
1573 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1574 } else if (ssid
->disabled
&& ssid
->disabled
!= 2) {
1575 if (wpa_s
->current_ssid
== NULL
) {
1577 * Try to reassociate since there is no current
1578 * configuration and a new network was made available.
1580 wpa_s
->reassociate
= 1;
1581 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1584 was_disabled
= ssid
->disabled
;
1588 if (was_disabled
!= ssid
->disabled
)
1589 wpas_notify_network_enabled_changed(wpa_s
, ssid
);
1595 * wpa_supplicant_disable_network - Mark a configured network as disabled
1596 * @wpa_s: wpa_supplicant structure for a network interface
1597 * @ssid: wpa_ssid structure for a configured network or %NULL
1599 * Disables the specified network or all networks if no network specified.
1601 void wpa_supplicant_disable_network(struct wpa_supplicant
*wpa_s
,
1602 struct wpa_ssid
*ssid
)
1604 struct wpa_ssid
*other_ssid
;
1608 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1609 other_ssid
= other_ssid
->next
) {
1610 was_disabled
= other_ssid
->disabled
;
1611 if (was_disabled
== 2)
1612 continue; /* do not change persistent P2P group
1615 other_ssid
->disabled
= 1;
1617 if (was_disabled
!= other_ssid
->disabled
)
1618 wpas_notify_network_enabled_changed(
1621 if (wpa_s
->current_ssid
)
1622 wpa_supplicant_disassociate(
1623 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1624 } else if (ssid
->disabled
!= 2) {
1625 if (ssid
== wpa_s
->current_ssid
)
1626 wpa_supplicant_disassociate(
1627 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1629 was_disabled
= ssid
->disabled
;
1633 if (was_disabled
!= ssid
->disabled
)
1634 wpas_notify_network_enabled_changed(wpa_s
, ssid
);
1640 * wpa_supplicant_select_network - Attempt association with a network
1641 * @wpa_s: wpa_supplicant structure for a network interface
1642 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1644 void wpa_supplicant_select_network(struct wpa_supplicant
*wpa_s
,
1645 struct wpa_ssid
*ssid
)
1648 struct wpa_ssid
*other_ssid
;
1650 if (ssid
&& ssid
!= wpa_s
->current_ssid
&& wpa_s
->current_ssid
)
1651 wpa_supplicant_disassociate(
1652 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1655 * Mark all other networks disabled or mark all networks enabled if no
1656 * network specified.
1658 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1659 other_ssid
= other_ssid
->next
) {
1660 int was_disabled
= other_ssid
->disabled
;
1661 if (was_disabled
== 2)
1662 continue; /* do not change persistent P2P group data */
1664 other_ssid
->disabled
= ssid
? (ssid
->id
!= other_ssid
->id
) : 0;
1666 if (was_disabled
!= other_ssid
->disabled
)
1667 wpas_notify_network_enabled_changed(wpa_s
, other_ssid
);
1670 if (ssid
&& ssid
== wpa_s
->current_ssid
&& wpa_s
->current_ssid
) {
1671 /* We are already associated with the selected network */
1672 wpa_printf(MSG_DEBUG
, "Already associated with the "
1673 "selected network - do nothing");
1677 wpa_s
->connect_without_scan
= NULL
;
1678 wpa_s
->disconnected
= 0;
1679 wpa_s
->reassociate
= 1;
1680 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1683 wpas_notify_network_selected(wpa_s
, ssid
);
1688 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1689 * @wpa_s: wpa_supplicant structure for a network interface
1690 * @ap_scan: AP scan mode
1691 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1694 int wpa_supplicant_set_ap_scan(struct wpa_supplicant
*wpa_s
, int ap_scan
)
1699 if (ap_scan
< 0 || ap_scan
> 2)
1703 if (ap_scan
== 2 && ap_scan
!= wpa_s
->conf
->ap_scan
&&
1704 wpa_s
->wpa_state
>= WPA_ASSOCIATING
&&
1705 wpa_s
->wpa_state
< WPA_COMPLETED
) {
1706 wpa_printf(MSG_ERROR
, "ap_scan = %d (%d) rejected while "
1707 "associating", wpa_s
->conf
->ap_scan
, ap_scan
);
1710 #endif /* ANDROID */
1712 old_ap_scan
= wpa_s
->conf
->ap_scan
;
1713 wpa_s
->conf
->ap_scan
= ap_scan
;
1715 if (old_ap_scan
!= wpa_s
->conf
->ap_scan
)
1716 wpas_notify_ap_scan_changed(wpa_s
);
1723 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1724 * @wpa_s: wpa_supplicant structure for a network interface
1725 * @expire_age: Expiration age in seconds
1726 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1729 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant
*wpa_s
,
1730 unsigned int bss_expire_age
)
1732 if (bss_expire_age
< 10) {
1733 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid bss expiration age %u",
1737 wpa_msg(wpa_s
, MSG_DEBUG
, "Setting bss expiration age: %d sec",
1739 wpa_s
->conf
->bss_expiration_age
= bss_expire_age
;
1746 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1747 * @wpa_s: wpa_supplicant structure for a network interface
1748 * @expire_count: number of scans after which an unseen BSS is reclaimed
1749 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1752 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant
*wpa_s
,
1753 unsigned int bss_expire_count
)
1755 if (bss_expire_count
< 1) {
1756 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid bss expiration count %u",
1760 wpa_msg(wpa_s
, MSG_DEBUG
, "Setting bss expiration scan count: %u",
1762 wpa_s
->conf
->bss_expiration_scan_count
= bss_expire_count
;
1769 * wpa_supplicant_set_debug_params - Set global debug params
1770 * @global: wpa_global structure
1771 * @debug_level: debug level
1772 * @debug_timestamp: determines if show timestamp in debug data
1773 * @debug_show_keys: determines if show keys in debug data
1774 * Returns: 0 if succeed or -1 if debug_level has wrong value
1776 int wpa_supplicant_set_debug_params(struct wpa_global
*global
, int debug_level
,
1777 int debug_timestamp
, int debug_show_keys
)
1780 int old_level
, old_timestamp
, old_show_keys
;
1782 /* check for allowed debuglevels */
1783 if (debug_level
!= MSG_EXCESSIVE
&&
1784 debug_level
!= MSG_MSGDUMP
&&
1785 debug_level
!= MSG_DEBUG
&&
1786 debug_level
!= MSG_INFO
&&
1787 debug_level
!= MSG_WARNING
&&
1788 debug_level
!= MSG_ERROR
)
1791 old_level
= wpa_debug_level
;
1792 old_timestamp
= wpa_debug_timestamp
;
1793 old_show_keys
= wpa_debug_show_keys
;
1795 wpa_debug_level
= debug_level
;
1796 wpa_debug_timestamp
= debug_timestamp
? 1 : 0;
1797 wpa_debug_show_keys
= debug_show_keys
? 1 : 0;
1799 if (wpa_debug_level
!= old_level
)
1800 wpas_notify_debug_level_changed(global
);
1801 if (wpa_debug_timestamp
!= old_timestamp
)
1802 wpas_notify_debug_timestamp_changed(global
);
1803 if (wpa_debug_show_keys
!= old_show_keys
)
1804 wpas_notify_debug_show_keys_changed(global
);
1811 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1812 * @wpa_s: Pointer to wpa_supplicant data
1813 * Returns: A pointer to the current network structure or %NULL on failure
1815 struct wpa_ssid
* wpa_supplicant_get_ssid(struct wpa_supplicant
*wpa_s
)
1817 struct wpa_ssid
*entry
;
1818 u8 ssid
[MAX_SSID_LEN
];
1824 res
= wpa_drv_get_ssid(wpa_s
, ssid
);
1826 wpa_msg(wpa_s
, MSG_WARNING
, "Could not read SSID from "
1832 if (wpa_drv_get_bssid(wpa_s
, bssid
) < 0) {
1833 wpa_msg(wpa_s
, MSG_WARNING
, "Could not read BSSID from "
1838 wired
= wpa_s
->conf
->ap_scan
== 0 &&
1839 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
);
1841 entry
= wpa_s
->conf
->ssid
;
1843 if (!entry
->disabled
&&
1844 ((ssid_len
== entry
->ssid_len
&&
1845 os_memcmp(ssid
, entry
->ssid
, ssid_len
) == 0) || wired
) &&
1846 (!entry
->bssid_set
||
1847 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0))
1850 if (!entry
->disabled
&&
1851 (entry
->key_mgmt
& WPA_KEY_MGMT_WPS
) &&
1852 (entry
->ssid
== NULL
|| entry
->ssid_len
== 0) &&
1853 (!entry
->bssid_set
||
1854 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0))
1856 #endif /* CONFIG_WPS */
1858 if (!entry
->disabled
&& entry
->bssid_set
&&
1859 entry
->ssid_len
== 0 &&
1860 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0)
1863 entry
= entry
->next
;
1870 static int select_driver(struct wpa_supplicant
*wpa_s
, int i
)
1872 struct wpa_global
*global
= wpa_s
->global
;
1874 if (wpa_drivers
[i
]->global_init
&& global
->drv_priv
[i
] == NULL
) {
1875 global
->drv_priv
[i
] = wpa_drivers
[i
]->global_init();
1876 if (global
->drv_priv
[i
] == NULL
) {
1877 wpa_printf(MSG_ERROR
, "Failed to initialize driver "
1878 "'%s'", wpa_drivers
[i
]->name
);
1883 wpa_s
->driver
= wpa_drivers
[i
];
1884 wpa_s
->global_drv_priv
= global
->drv_priv
[i
];
1890 static int wpa_supplicant_set_driver(struct wpa_supplicant
*wpa_s
,
1895 const char *pos
, *driver
= name
;
1900 if (wpa_drivers
[0] == NULL
) {
1901 wpa_msg(wpa_s
, MSG_ERROR
, "No driver interfaces build into "
1907 /* default to first driver in the list */
1908 return select_driver(wpa_s
, 0);
1912 pos
= os_strchr(driver
, ',');
1916 len
= os_strlen(driver
);
1918 for (i
= 0; wpa_drivers
[i
]; i
++) {
1919 if (os_strlen(wpa_drivers
[i
]->name
) == len
&&
1920 os_strncmp(driver
, wpa_drivers
[i
]->name
, len
) ==
1922 return select_driver(wpa_s
, i
);
1928 wpa_msg(wpa_s
, MSG_ERROR
, "Unsupported driver '%s'", name
);
1934 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1935 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1936 * with struct wpa_driver_ops::init()
1937 * @src_addr: Source address of the EAPOL frame
1938 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1939 * @len: Length of the EAPOL data
1941 * This function is called for each received EAPOL frame. Most driver
1942 * interfaces rely on more generic OS mechanism for receiving frames through
1943 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1944 * take care of received EAPOL frames and deliver them to the core supplicant
1945 * code by calling this function.
1947 void wpa_supplicant_rx_eapol(void *ctx
, const u8
*src_addr
,
1948 const u8
*buf
, size_t len
)
1950 struct wpa_supplicant
*wpa_s
= ctx
;
1952 wpa_dbg(wpa_s
, MSG_DEBUG
, "RX EAPOL from " MACSTR
, MAC2STR(src_addr
));
1953 wpa_hexdump(MSG_MSGDUMP
, "RX EAPOL", buf
, len
);
1955 if (wpa_s
->wpa_state
< WPA_ASSOCIATED
) {
1957 * There is possible race condition between receiving the
1958 * association event and the EAPOL frame since they are coming
1959 * through different paths from the driver. In order to avoid
1960 * issues in trying to process the EAPOL frame before receiving
1961 * association information, lets queue it for processing until
1962 * the association event is received.
1964 wpa_dbg(wpa_s
, MSG_DEBUG
, "Not associated - Delay processing "
1965 "of received EAPOL frame");
1966 wpabuf_free(wpa_s
->pending_eapol_rx
);
1967 wpa_s
->pending_eapol_rx
= wpabuf_alloc_copy(buf
, len
);
1968 if (wpa_s
->pending_eapol_rx
) {
1969 os_get_time(&wpa_s
->pending_eapol_rx_time
);
1970 os_memcpy(wpa_s
->pending_eapol_rx_src
, src_addr
,
1977 if (wpa_s
->ap_iface
) {
1978 wpa_supplicant_ap_rx_eapol(wpa_s
, src_addr
, buf
, len
);
1981 #endif /* CONFIG_AP */
1983 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
) {
1984 wpa_dbg(wpa_s
, MSG_DEBUG
, "Ignored received EAPOL frame since "
1985 "no key management is configured");
1989 if (wpa_s
->eapol_received
== 0 &&
1990 (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
) ||
1991 !wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
) ||
1992 wpa_s
->wpa_state
!= WPA_COMPLETED
) &&
1993 (wpa_s
->current_ssid
== NULL
||
1994 wpa_s
->current_ssid
->mode
!= IEEE80211_MODE_IBSS
)) {
1995 /* Timeout for completing IEEE 802.1X and WPA authentication */
1996 wpa_supplicant_req_auth_timeout(
1998 (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) ||
1999 wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
||
2000 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
) ?
2003 wpa_s
->eapol_received
++;
2005 if (wpa_s
->countermeasures
) {
2006 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Countermeasures - dropped "
2011 #ifdef CONFIG_IBSS_RSN
2012 if (wpa_s
->current_ssid
&&
2013 wpa_s
->current_ssid
->mode
== WPAS_MODE_IBSS
) {
2014 ibss_rsn_rx_eapol(wpa_s
->ibss_rsn
, src_addr
, buf
, len
);
2017 #endif /* CONFIG_IBSS_RSN */
2019 /* Source address of the incoming EAPOL frame could be compared to the
2020 * current BSSID. However, it is possible that a centralized
2021 * Authenticator could be using another MAC address than the BSSID of
2022 * an AP, so just allow any address to be used for now. The replies are
2023 * still sent to the current BSSID (if available), though. */
2025 os_memcpy(wpa_s
->last_eapol_src
, src_addr
, ETH_ALEN
);
2026 if (!wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
) &&
2027 eapol_sm_rx_eapol(wpa_s
->eapol
, src_addr
, buf
, len
) > 0)
2029 wpa_drv_poll(wpa_s
);
2030 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
))
2031 wpa_sm_rx_eapol(wpa_s
->wpa
, src_addr
, buf
, len
);
2032 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
)) {
2034 * Set portValid = TRUE here since we are going to skip 4-way
2035 * handshake processing which would normally set portValid. We
2036 * need this to allow the EAPOL state machines to be completed
2037 * without going through EAPOL-Key handshake.
2039 eapol_sm_notify_portValid(wpa_s
->eapol
, TRUE
);
2045 * wpa_supplicant_driver_init - Initialize driver interface parameters
2046 * @wpa_s: Pointer to wpa_supplicant data
2047 * Returns: 0 on success, -1 on failure
2049 * This function is called to initialize driver interface parameters.
2050 * wpa_drv_init() must have been called before this function to initialize the
2053 int wpa_supplicant_driver_init(struct wpa_supplicant
*wpa_s
)
2055 static int interface_count
= 0;
2057 if (wpa_s
->driver
->send_eapol
) {
2058 const u8
*addr
= wpa_drv_get_mac_addr(wpa_s
);
2060 os_memcpy(wpa_s
->own_addr
, addr
, ETH_ALEN
);
2061 } else if (!(wpa_s
->drv_flags
&
2062 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE
)) {
2063 wpa_s
->l2
= l2_packet_init(wpa_s
->ifname
,
2064 wpa_drv_get_mac_addr(wpa_s
),
2066 wpa_supplicant_rx_eapol
, wpa_s
, 0);
2067 if (wpa_s
->l2
== NULL
)
2070 const u8
*addr
= wpa_drv_get_mac_addr(wpa_s
);
2072 os_memcpy(wpa_s
->own_addr
, addr
, ETH_ALEN
);
2075 if (wpa_s
->l2
&& l2_packet_get_own_addr(wpa_s
->l2
, wpa_s
->own_addr
)) {
2076 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to get own L2 address");
2080 wpa_dbg(wpa_s
, MSG_DEBUG
, "Own MAC address: " MACSTR
,
2081 MAC2STR(wpa_s
->own_addr
));
2083 if (wpa_s
->bridge_ifname
[0]) {
2084 wpa_dbg(wpa_s
, MSG_DEBUG
, "Receiving packets from bridge "
2085 "interface '%s'", wpa_s
->bridge_ifname
);
2086 wpa_s
->l2_br
= l2_packet_init(wpa_s
->bridge_ifname
,
2089 wpa_supplicant_rx_eapol
, wpa_s
,
2091 if (wpa_s
->l2_br
== NULL
) {
2092 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to open l2_packet "
2093 "connection for the bridge interface '%s'",
2094 wpa_s
->bridge_ifname
);
2099 wpa_clear_keys(wpa_s
, NULL
);
2101 /* Make sure that TKIP countermeasures are not left enabled (could
2102 * happen if wpa_supplicant is killed during countermeasures. */
2103 wpa_drv_set_countermeasures(wpa_s
, 0);
2105 wpa_dbg(wpa_s
, MSG_DEBUG
, "RSN: flushing PMKID list in the driver");
2106 wpa_drv_flush_pmkid(wpa_s
);
2108 wpa_s
->prev_scan_ssid
= WILDCARD_SSID_SCAN
;
2109 if (wpa_supplicant_enabled_networks(wpa_s
->conf
)) {
2110 if (wpa_supplicant_delayed_sched_scan(wpa_s
, interface_count
,
2112 wpa_supplicant_req_scan(wpa_s
, interface_count
,
2116 wpa_supplicant_set_state(wpa_s
, WPA_INACTIVE
);
2122 static int wpa_supplicant_daemon(const char *pid_file
)
2124 wpa_printf(MSG_DEBUG
, "Daemonize..");
2125 return os_daemonize(pid_file
);
2129 static struct wpa_supplicant
* wpa_supplicant_alloc(void)
2131 struct wpa_supplicant
*wpa_s
;
2133 wpa_s
= os_zalloc(sizeof(*wpa_s
));
2136 wpa_s
->scan_req
= 1;
2137 wpa_s
->scan_interval
= 5;
2138 wpa_s
->new_connection
= 1;
2139 wpa_s
->parent
= wpa_s
;
2140 wpa_s
->sched_scanning
= 0;
2146 static int wpa_supplicant_init_iface(struct wpa_supplicant
*wpa_s
,
2147 struct wpa_interface
*iface
)
2149 const char *ifname
, *driver
;
2150 struct wpa_driver_capa capa
;
2152 wpa_printf(MSG_DEBUG
, "Initializing interface '%s' conf '%s' driver "
2153 "'%s' ctrl_interface '%s' bridge '%s'", iface
->ifname
,
2154 iface
->confname
? iface
->confname
: "N/A",
2155 iface
->driver
? iface
->driver
: "default",
2156 iface
->ctrl_interface
? iface
->ctrl_interface
: "N/A",
2157 iface
->bridge_ifname
? iface
->bridge_ifname
: "N/A");
2159 if (iface
->confname
) {
2160 #ifdef CONFIG_BACKEND_FILE
2161 wpa_s
->confname
= os_rel2abs_path(iface
->confname
);
2162 if (wpa_s
->confname
== NULL
) {
2163 wpa_printf(MSG_ERROR
, "Failed to get absolute path "
2164 "for configuration file '%s'.",
2168 wpa_printf(MSG_DEBUG
, "Configuration file '%s' -> '%s'",
2169 iface
->confname
, wpa_s
->confname
);
2170 #else /* CONFIG_BACKEND_FILE */
2171 wpa_s
->confname
= os_strdup(iface
->confname
);
2172 #endif /* CONFIG_BACKEND_FILE */
2173 wpa_s
->conf
= wpa_config_read(wpa_s
->confname
);
2174 if (wpa_s
->conf
== NULL
) {
2175 wpa_printf(MSG_ERROR
, "Failed to read or parse "
2176 "configuration '%s'.", wpa_s
->confname
);
2181 * Override ctrl_interface and driver_param if set on command
2184 if (iface
->ctrl_interface
) {
2185 os_free(wpa_s
->conf
->ctrl_interface
);
2186 wpa_s
->conf
->ctrl_interface
=
2187 os_strdup(iface
->ctrl_interface
);
2190 if (iface
->driver_param
) {
2191 os_free(wpa_s
->conf
->driver_param
);
2192 wpa_s
->conf
->driver_param
=
2193 os_strdup(iface
->driver_param
);
2196 wpa_s
->conf
= wpa_config_alloc_empty(iface
->ctrl_interface
,
2197 iface
->driver_param
);
2199 if (wpa_s
->conf
== NULL
) {
2200 wpa_printf(MSG_ERROR
, "\nNo configuration found.");
2204 if (iface
->ifname
== NULL
) {
2205 wpa_printf(MSG_ERROR
, "\nInterface name is required.");
2208 if (os_strlen(iface
->ifname
) >= sizeof(wpa_s
->ifname
)) {
2209 wpa_printf(MSG_ERROR
, "\nToo long interface name '%s'.",
2213 os_strlcpy(wpa_s
->ifname
, iface
->ifname
, sizeof(wpa_s
->ifname
));
2215 if (iface
->bridge_ifname
) {
2216 if (os_strlen(iface
->bridge_ifname
) >=
2217 sizeof(wpa_s
->bridge_ifname
)) {
2218 wpa_printf(MSG_ERROR
, "\nToo long bridge interface "
2219 "name '%s'.", iface
->bridge_ifname
);
2222 os_strlcpy(wpa_s
->bridge_ifname
, iface
->bridge_ifname
,
2223 sizeof(wpa_s
->bridge_ifname
));
2226 /* RSNA Supplicant Key Management - INITIALIZE */
2227 eapol_sm_notify_portEnabled(wpa_s
->eapol
, FALSE
);
2228 eapol_sm_notify_portValid(wpa_s
->eapol
, FALSE
);
2230 /* Initialize driver interface and register driver event handler before
2231 * L2 receive handler so that association events are processed before
2232 * EAPOL-Key packets if both become available for the same select()
2234 driver
= iface
->driver
;
2236 if (wpa_supplicant_set_driver(wpa_s
, driver
) < 0)
2239 wpa_s
->drv_priv
= wpa_drv_init(wpa_s
, wpa_s
->ifname
);
2240 if (wpa_s
->drv_priv
== NULL
) {
2242 pos
= driver
? os_strchr(driver
, ',') : NULL
;
2244 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to initialize "
2245 "driver interface - try next driver wrapper");
2249 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to initialize driver "
2253 if (wpa_drv_set_param(wpa_s
, wpa_s
->conf
->driver_param
) < 0) {
2254 wpa_msg(wpa_s
, MSG_ERROR
, "Driver interface rejected "
2255 "driver_param '%s'", wpa_s
->conf
->driver_param
);
2259 ifname
= wpa_drv_get_ifname(wpa_s
);
2260 if (ifname
&& os_strcmp(ifname
, wpa_s
->ifname
) != 0) {
2261 wpa_dbg(wpa_s
, MSG_DEBUG
, "Driver interface replaced "
2262 "interface name with '%s'", ifname
);
2263 os_strlcpy(wpa_s
->ifname
, ifname
, sizeof(wpa_s
->ifname
));
2266 if (wpa_supplicant_init_wpa(wpa_s
) < 0)
2269 wpa_sm_set_ifname(wpa_s
->wpa
, wpa_s
->ifname
,
2270 wpa_s
->bridge_ifname
[0] ? wpa_s
->bridge_ifname
:
2272 wpa_sm_set_fast_reauth(wpa_s
->wpa
, wpa_s
->conf
->fast_reauth
);
2274 if (wpa_s
->conf
->dot11RSNAConfigPMKLifetime
&&
2275 wpa_sm_set_param(wpa_s
->wpa
, RSNA_PMK_LIFETIME
,
2276 wpa_s
->conf
->dot11RSNAConfigPMKLifetime
)) {
2277 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2278 "dot11RSNAConfigPMKLifetime");
2282 if (wpa_s
->conf
->dot11RSNAConfigPMKReauthThreshold
&&
2283 wpa_sm_set_param(wpa_s
->wpa
, RSNA_PMK_REAUTH_THRESHOLD
,
2284 wpa_s
->conf
->dot11RSNAConfigPMKReauthThreshold
)) {
2285 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2286 "dot11RSNAConfigPMKReauthThreshold");
2290 if (wpa_s
->conf
->dot11RSNAConfigSATimeout
&&
2291 wpa_sm_set_param(wpa_s
->wpa
, RSNA_SA_TIMEOUT
,
2292 wpa_s
->conf
->dot11RSNAConfigSATimeout
)) {
2293 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2294 "dot11RSNAConfigSATimeout");
2298 if (wpa_drv_get_capa(wpa_s
, &capa
) == 0) {
2299 wpa_s
->drv_flags
= capa
.flags
;
2300 wpa_s
->max_scan_ssids
= capa
.max_scan_ssids
;
2301 wpa_s
->max_sched_scan_ssids
= capa
.max_sched_scan_ssids
;
2302 wpa_s
->sched_scan_supported
= capa
.sched_scan_supported
;
2303 wpa_s
->max_match_sets
= capa
.max_match_sets
;
2304 wpa_s
->max_remain_on_chan
= capa
.max_remain_on_chan
;
2305 wpa_s
->max_stations
= capa
.max_stations
;
2307 if (wpa_s
->max_remain_on_chan
== 0)
2308 wpa_s
->max_remain_on_chan
= 1000;
2310 if (wpa_supplicant_driver_init(wpa_s
) < 0)
2314 if (wpa_tdls_init(wpa_s
->wpa
))
2316 #endif /* CONFIG_TDLS */
2318 if (wpa_s
->conf
->country
[0] && wpa_s
->conf
->country
[1] &&
2319 wpa_drv_set_country(wpa_s
, wpa_s
->conf
->country
)) {
2320 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to set country");
2324 wpa_sm_set_own_addr(wpa_s
->wpa
, wpa_s
->own_addr
);
2326 if (wpas_wps_init(wpa_s
))
2329 if (wpa_supplicant_init_eapol(wpa_s
) < 0)
2331 wpa_sm_set_eapol(wpa_s
->wpa
, wpa_s
->eapol
);
2333 wpa_s
->ctrl_iface
= wpa_supplicant_ctrl_iface_init(wpa_s
);
2334 if (wpa_s
->ctrl_iface
== NULL
) {
2335 wpa_printf(MSG_ERROR
,
2336 "Failed to initialize control interface '%s'.\n"
2337 "You may have another wpa_supplicant process "
2338 "already running or the file was\n"
2339 "left by an unclean termination of wpa_supplicant "
2340 "in which case you will need\n"
2341 "to manually remove this file before starting "
2342 "wpa_supplicant again.\n",
2343 wpa_s
->conf
->ctrl_interface
);
2347 wpa_s
->gas
= gas_query_init(wpa_s
);
2348 if (wpa_s
->gas
== NULL
) {
2349 wpa_printf(MSG_ERROR
, "Failed to initialize GAS query");
2354 if (wpas_p2p_init(wpa_s
->global
, wpa_s
) < 0) {
2355 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to init P2P");
2358 #endif /* CONFIG_P2P */
2360 if (wpa_bss_init(wpa_s
) < 0)
2367 static void wpa_supplicant_deinit_iface(struct wpa_supplicant
*wpa_s
,
2370 if (wpa_s
->drv_priv
) {
2371 wpa_supplicant_deauthenticate(wpa_s
,
2372 WLAN_REASON_DEAUTH_LEAVING
);
2374 wpa_drv_set_countermeasures(wpa_s
, 0);
2375 wpa_clear_keys(wpa_s
, NULL
);
2378 wpa_supplicant_cleanup(wpa_s
);
2381 wpas_notify_iface_removed(wpa_s
);
2383 if (wpa_s
->drv_priv
)
2384 wpa_drv_deinit(wpa_s
);
2389 * wpa_supplicant_add_iface - Add a new network interface
2390 * @global: Pointer to global data from wpa_supplicant_init()
2391 * @iface: Interface configuration options
2392 * Returns: Pointer to the created interface or %NULL on failure
2394 * This function is used to add new network interfaces for %wpa_supplicant.
2395 * This can be called before wpa_supplicant_run() to add interfaces before the
2396 * main event loop has been started. In addition, new interfaces can be added
2397 * dynamically while %wpa_supplicant is already running. This could happen,
2398 * e.g., when a hotplug network adapter is inserted.
2400 struct wpa_supplicant
* wpa_supplicant_add_iface(struct wpa_global
*global
,
2401 struct wpa_interface
*iface
)
2403 struct wpa_supplicant
*wpa_s
;
2404 struct wpa_interface t_iface
;
2405 struct wpa_ssid
*ssid
;
2407 if (global
== NULL
|| iface
== NULL
)
2410 wpa_s
= wpa_supplicant_alloc();
2414 wpa_s
->global
= global
;
2417 if (global
->params
.override_driver
) {
2418 wpa_printf(MSG_DEBUG
, "Override interface parameter: driver "
2420 iface
->driver
, global
->params
.override_driver
);
2421 t_iface
.driver
= global
->params
.override_driver
;
2423 if (global
->params
.override_ctrl_interface
) {
2424 wpa_printf(MSG_DEBUG
, "Override interface parameter: "
2425 "ctrl_interface ('%s' -> '%s')",
2426 iface
->ctrl_interface
,
2427 global
->params
.override_ctrl_interface
);
2428 t_iface
.ctrl_interface
=
2429 global
->params
.override_ctrl_interface
;
2431 if (wpa_supplicant_init_iface(wpa_s
, &t_iface
)) {
2432 wpa_printf(MSG_DEBUG
, "Failed to add interface %s",
2434 wpa_supplicant_deinit_iface(wpa_s
, 0);
2439 /* Notify the control interfaces about new iface */
2440 if (wpas_notify_iface_added(wpa_s
)) {
2441 wpa_supplicant_deinit_iface(wpa_s
, 1);
2446 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
)
2447 wpas_notify_network_added(wpa_s
, ssid
);
2449 wpa_s
->next
= global
->ifaces
;
2450 global
->ifaces
= wpa_s
;
2452 wpa_dbg(wpa_s
, MSG_DEBUG
, "Added interface %s", wpa_s
->ifname
);
2459 * wpa_supplicant_remove_iface - Remove a network interface
2460 * @global: Pointer to global data from wpa_supplicant_init()
2461 * @wpa_s: Pointer to the network interface to be removed
2462 * Returns: 0 if interface was removed, -1 if interface was not found
2464 * This function can be used to dynamically remove network interfaces from
2465 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2466 * addition, this function is used to remove all remaining interfaces when
2467 * %wpa_supplicant is terminated.
2469 int wpa_supplicant_remove_iface(struct wpa_global
*global
,
2470 struct wpa_supplicant
*wpa_s
)
2472 struct wpa_supplicant
*prev
;
2474 /* Remove interface from the global list of interfaces */
2475 prev
= global
->ifaces
;
2476 if (prev
== wpa_s
) {
2477 global
->ifaces
= wpa_s
->next
;
2479 while (prev
&& prev
->next
!= wpa_s
)
2483 prev
->next
= wpa_s
->next
;
2486 wpa_dbg(wpa_s
, MSG_DEBUG
, "Removing interface %s", wpa_s
->ifname
);
2488 if (global
->p2p_group_formation
== wpa_s
)
2489 global
->p2p_group_formation
= NULL
;
2490 wpa_supplicant_deinit_iface(wpa_s
, 1);
2498 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2499 * @wpa_s: Pointer to the network interface
2500 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2502 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant
*wpa_s
)
2504 const char *eapol_method
;
2506 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) == 0 &&
2507 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
2511 eapol_method
= eapol_sm_get_method_name(wpa_s
->eapol
);
2512 if (eapol_method
== NULL
)
2513 return "UNKNOWN-EAP";
2515 return eapol_method
;
2520 * wpa_supplicant_get_iface - Get a new network interface
2521 * @global: Pointer to global data from wpa_supplicant_init()
2522 * @ifname: Interface name
2523 * Returns: Pointer to the interface or %NULL if not found
2525 struct wpa_supplicant
* wpa_supplicant_get_iface(struct wpa_global
*global
,
2528 struct wpa_supplicant
*wpa_s
;
2530 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
2531 if (os_strcmp(wpa_s
->ifname
, ifname
) == 0)
2538 #ifndef CONFIG_NO_WPA_MSG
2539 static const char * wpa_supplicant_msg_ifname_cb(void *ctx
)
2541 struct wpa_supplicant
*wpa_s
= ctx
;
2544 return wpa_s
->ifname
;
2546 #endif /* CONFIG_NO_WPA_MSG */
2550 * wpa_supplicant_init - Initialize %wpa_supplicant
2551 * @params: Parameters for %wpa_supplicant
2552 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2554 * This function is used to initialize %wpa_supplicant. After successful
2555 * initialization, the returned data pointer can be used to add and remove
2556 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2558 struct wpa_global
* wpa_supplicant_init(struct wpa_params
*params
)
2560 struct wpa_global
*global
;
2566 #ifndef CONFIG_NO_WPA_MSG
2567 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb
);
2568 #endif /* CONFIG_NO_WPA_MSG */
2570 wpa_debug_open_file(params
->wpa_debug_file_path
);
2571 if (params
->wpa_debug_syslog
)
2572 wpa_debug_open_syslog();
2574 ret
= eap_register_methods();
2576 wpa_printf(MSG_ERROR
, "Failed to register EAP methods");
2578 wpa_printf(MSG_ERROR
, "Two or more EAP methods used "
2579 "the same EAP type.");
2583 global
= os_zalloc(sizeof(*global
));
2586 dl_list_init(&global
->p2p_srv_bonjour
);
2587 dl_list_init(&global
->p2p_srv_upnp
);
2588 global
->params
.daemonize
= params
->daemonize
;
2589 global
->params
.wait_for_monitor
= params
->wait_for_monitor
;
2590 global
->params
.dbus_ctrl_interface
= params
->dbus_ctrl_interface
;
2591 if (params
->pid_file
)
2592 global
->params
.pid_file
= os_strdup(params
->pid_file
);
2593 if (params
->ctrl_interface
)
2594 global
->params
.ctrl_interface
=
2595 os_strdup(params
->ctrl_interface
);
2596 if (params
->override_driver
)
2597 global
->params
.override_driver
=
2598 os_strdup(params
->override_driver
);
2599 if (params
->override_ctrl_interface
)
2600 global
->params
.override_ctrl_interface
=
2601 os_strdup(params
->override_ctrl_interface
);
2602 wpa_debug_level
= global
->params
.wpa_debug_level
=
2603 params
->wpa_debug_level
;
2604 wpa_debug_show_keys
= global
->params
.wpa_debug_show_keys
=
2605 params
->wpa_debug_show_keys
;
2606 wpa_debug_timestamp
= global
->params
.wpa_debug_timestamp
=
2607 params
->wpa_debug_timestamp
;
2609 wpa_printf(MSG_DEBUG
, "wpa_supplicant v" VERSION_STR
);
2612 wpa_printf(MSG_ERROR
, "Failed to initialize event loop");
2613 wpa_supplicant_deinit(global
);
2617 random_init(params
->entropy_file
);
2619 global
->ctrl_iface
= wpa_supplicant_global_ctrl_iface_init(global
);
2620 if (global
->ctrl_iface
== NULL
) {
2621 wpa_supplicant_deinit(global
);
2625 if (wpas_notify_supplicant_initialized(global
)) {
2626 wpa_supplicant_deinit(global
);
2630 for (i
= 0; wpa_drivers
[i
]; i
++)
2631 global
->drv_count
++;
2632 if (global
->drv_count
== 0) {
2633 wpa_printf(MSG_ERROR
, "No drivers enabled");
2634 wpa_supplicant_deinit(global
);
2637 global
->drv_priv
= os_zalloc(global
->drv_count
* sizeof(void *));
2638 if (global
->drv_priv
== NULL
) {
2639 wpa_supplicant_deinit(global
);
2648 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2649 * @global: Pointer to global data from wpa_supplicant_init()
2650 * Returns: 0 after successful event loop run, -1 on failure
2652 * This function starts the main event loop and continues running as long as
2653 * there are any remaining events. In most cases, this function is running as
2654 * long as the %wpa_supplicant process in still in use.
2656 int wpa_supplicant_run(struct wpa_global
*global
)
2658 struct wpa_supplicant
*wpa_s
;
2660 if (global
->params
.daemonize
&&
2661 wpa_supplicant_daemon(global
->params
.pid_file
))
2664 if (global
->params
.wait_for_monitor
) {
2665 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
)
2666 if (wpa_s
->ctrl_iface
)
2667 wpa_supplicant_ctrl_iface_wait(
2671 eloop_register_signal_terminate(wpa_supplicant_terminate
, global
);
2672 eloop_register_signal_reconfig(wpa_supplicant_reconfig
, global
);
2681 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2682 * @global: Pointer to global data from wpa_supplicant_init()
2684 * This function is called to deinitialize %wpa_supplicant and to free all
2685 * allocated resources. Remaining network interfaces will also be removed.
2687 void wpa_supplicant_deinit(struct wpa_global
*global
)
2695 wpas_p2p_deinit_global(global
);
2696 #endif /* CONFIG_P2P */
2698 while (global
->ifaces
)
2699 wpa_supplicant_remove_iface(global
, global
->ifaces
);
2701 if (global
->ctrl_iface
)
2702 wpa_supplicant_global_ctrl_iface_deinit(global
->ctrl_iface
);
2704 wpas_notify_supplicant_deinitialized(global
);
2706 eap_peer_unregister_methods();
2708 eap_server_unregister_methods();
2709 #endif /* CONFIG_AP */
2711 for (i
= 0; wpa_drivers
[i
] && global
->drv_priv
; i
++) {
2712 if (!global
->drv_priv
[i
])
2714 wpa_drivers
[i
]->global_deinit(global
->drv_priv
[i
]);
2716 os_free(global
->drv_priv
);
2722 if (global
->params
.pid_file
) {
2723 os_daemonize_terminate(global
->params
.pid_file
);
2724 os_free(global
->params
.pid_file
);
2726 os_free(global
->params
.ctrl_interface
);
2727 os_free(global
->params
.override_driver
);
2728 os_free(global
->params
.override_ctrl_interface
);
2731 wpa_debug_close_syslog();
2732 wpa_debug_close_file();
2736 void wpa_supplicant_update_config(struct wpa_supplicant
*wpa_s
)
2738 if ((wpa_s
->conf
->changed_parameters
& CFG_CHANGED_COUNTRY
) &&
2739 wpa_s
->conf
->country
[0] && wpa_s
->conf
->country
[1]) {
2741 country
[0] = wpa_s
->conf
->country
[0];
2742 country
[1] = wpa_s
->conf
->country
[1];
2744 if (wpa_drv_set_country(wpa_s
, country
) < 0) {
2745 wpa_printf(MSG_ERROR
, "Failed to set country code "
2751 wpas_wps_update_config(wpa_s
);
2752 #endif /* CONFIG_WPS */
2755 wpas_p2p_update_config(wpa_s
);
2756 #endif /* CONFIG_P2P */
2758 wpa_s
->conf
->changed_parameters
= 0;
2762 void ieee80211_sta_free_hw_features(struct hostapd_hw_modes
*hw_features
,
2763 size_t num_hw_features
)
2767 if (hw_features
== NULL
)
2770 for (i
= 0; i
< num_hw_features
; i
++) {
2771 os_free(hw_features
[i
].channels
);
2772 os_free(hw_features
[i
].rates
);
2775 os_free(hw_features
);
2779 static void add_freq(int *freqs
, int *num_freqs
, int freq
)
2783 for (i
= 0; i
< *num_freqs
; i
++) {
2784 if (freqs
[i
] == freq
)
2788 freqs
[*num_freqs
] = freq
;
2793 static int * get_bss_freqs_in_ess(struct wpa_supplicant
*wpa_s
)
2795 struct wpa_bss
*bss
, *cbss
;
2796 const int max_freqs
= 10;
2800 freqs
= os_zalloc(sizeof(int) * (max_freqs
+ 1));
2804 cbss
= wpa_s
->current_bss
;
2806 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
2809 if (bss
->ssid_len
== cbss
->ssid_len
&&
2810 os_memcmp(bss
->ssid
, cbss
->ssid
, bss
->ssid_len
) == 0 &&
2811 wpa_blacklist_get(wpa_s
, bss
->bssid
) == NULL
) {
2812 add_freq(freqs
, &num_freqs
, bss
->freq
);
2813 if (num_freqs
== max_freqs
)
2818 if (num_freqs
== 0) {
2827 void wpas_connection_failed(struct wpa_supplicant
*wpa_s
, const u8
*bssid
)
2834 * Add the failed BSSID into the blacklist and speed up next scan
2835 * attempt if there could be other APs that could accept association.
2836 * The current blacklist count indicates how many times we have tried
2837 * connecting to this AP and multiple attempts mean that other APs are
2838 * either not available or has already been tried, so that we can start
2839 * increasing the delay here to avoid constant scanning.
2841 count
= wpa_blacklist_add(wpa_s
, bssid
);
2842 if (count
== 1 && wpa_s
->current_bss
) {
2844 * This BSS was not in the blacklist before. If there is
2845 * another BSS available for the same ESS, we should try that
2846 * next. Otherwise, we may as well try this one once more
2847 * before allowing other, likely worse, ESSes to be considered.
2849 freqs
= get_bss_freqs_in_ess(wpa_s
);
2851 wpa_dbg(wpa_s
, MSG_DEBUG
, "Another BSS in this ESS "
2852 "has been seen; try it next");
2853 wpa_blacklist_add(wpa_s
, bssid
);
2855 * On the next scan, go through only the known channels
2856 * used in this ESS based on previous scans to speed up
2857 * common load balancing use case.
2859 os_free(wpa_s
->next_scan_freqs
);
2860 wpa_s
->next_scan_freqs
= freqs
;
2879 * TODO: if more than one possible AP is available in scan results,
2880 * could try the other ones before requesting a new scan.
2882 wpa_supplicant_req_scan(wpa_s
, timeout
/ 1000,
2883 1000 * (timeout
% 1000));
2887 int wpas_driver_bss_selection(struct wpa_supplicant
*wpa_s
)
2889 return wpa_s
->conf
->ap_scan
== 2 ||
2890 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_BSS_SELECTION
);