3 * Copyright (c) 2003-2008, 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"
26 #include "drivers/driver.h"
28 #include "l2_packet/l2_packet.h"
29 #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"
42 #include "wps_supplicant.h"
44 const char *wpa_supplicant_version =
45 "wpa_supplicant v" VERSION_STR "\n"
46 "Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> and contributors";
48 const char *wpa_supplicant_license =
49 "This program is free software. You can distribute it and/or modify it\n"
50 "under the terms of the GNU General Public License version 2.\n"
52 "Alternatively, this software may be distributed under the terms of the\n"
53 "BSD license. See README and COPYING for more details.\n"
54 #ifdef EAP_TLS_OPENSSL
55 "\nThis product includes software developed by the OpenSSL Project\n"
56 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
57 #endif /* EAP_TLS_OPENSSL */
60 #ifndef CONFIG_NO_STDOUT_DEBUG
61 /* Long text divided into parts in order to fit in C89 strings size limits. */
62 const char *wpa_supplicant_full_license1 =
63 "This program is free software; you can redistribute it and/or modify\n"
64 "it under the terms of the GNU General Public License version 2 as\n"
65 "published by the Free Software Foundation.\n"
67 "This program is distributed in the hope that it will be useful,\n"
68 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
69 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
70 "GNU General Public License for more details.\n"
72 const char *wpa_supplicant_full_license2 =
73 "You should have received a copy of the GNU General Public License\n"
74 "along with this program; if not, write to the Free Software\n"
75 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
77 "Alternatively, this software may be distributed under the terms of the\n"
80 "Redistribution and use in source and binary forms, with or without\n"
81 "modification, are permitted provided that the following conditions are\n"
84 const char *wpa_supplicant_full_license3 =
85 "1. Redistributions of source code must retain the above copyright\n"
86 " notice, this list of conditions and the following disclaimer.\n"
88 "2. Redistributions in binary form must reproduce the above copyright\n"
89 " notice, this list of conditions and the following disclaimer in the\n"
90 " documentation and/or other materials provided with the distribution.\n"
92 const char *wpa_supplicant_full_license4 =
93 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
94 " names of its contributors may be used to endorse or promote products\n"
95 " derived from this software without specific prior written permission.\n"
97 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
98 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
99 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
100 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
101 const char *wpa_supplicant_full_license5 =
102 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
103 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
104 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
105 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
106 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
107 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
108 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
110 #endif /* CONFIG_NO_STDOUT_DEBUG */
112 extern struct wpa_driver_ops *wpa_supplicant_drivers[];
114 extern int wpa_debug_level;
115 extern int wpa_debug_show_keys;
116 extern int wpa_debug_timestamp;
118 /* Configure default/group WEP keys for static WEP */
119 static int wpa_set_wep_keys(struct wpa_supplicant *wpa_s,
120 struct wpa_ssid *ssid)
124 for (i = 0; i < NUM_WEP_KEYS; i++) {
125 if (ssid->wep_key_len[i] == 0)
129 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
130 (u8 *) "\xff\xff\xff\xff\xff\xff",
131 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
132 ssid->wep_key[i], ssid->wep_key_len[i]);
139 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
140 struct wpa_ssid *ssid)
147 /* IBSS/WPA-None uses only one key (Group) for both receiving and
148 * sending unicast and multicast packets. */
150 if (ssid->mode != IEEE80211_MODE_IBSS) {
151 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
152 "for WPA-None", ssid->mode);
156 if (!ssid->psk_set) {
157 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
161 switch (wpa_s->group_cipher) {
162 case WPA_CIPHER_CCMP:
163 os_memcpy(key, ssid->psk, 16);
167 case WPA_CIPHER_TKIP:
168 /* WPA-None uses the same Michael MIC key for both TX and RX */
169 os_memcpy(key, ssid->psk, 16 + 8);
170 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
175 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
176 "WPA-None", wpa_s->group_cipher);
180 /* TODO: should actually remember the previously used seq#, both for TX
181 * and RX from each STA.. */
183 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
184 0, 1, seq, 6, key, keylen);
188 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
190 struct wpa_supplicant *wpa_s = eloop_ctx;
191 const u8 *bssid = wpa_s->bssid;
192 if (is_zero_ether_addr(bssid))
193 bssid = wpa_s->pending_bssid;
194 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
196 wpa_blacklist_add(wpa_s, bssid);
197 wpa_sm_notify_disassoc(wpa_s->wpa);
198 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
199 wpa_s->reassociate = 1;
200 wpa_supplicant_req_scan(wpa_s, 0, 0);
205 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
206 * @wpa_s: Pointer to wpa_supplicant data
207 * @sec: Number of seconds after which to time out authentication
208 * @usec: Number of microseconds after which to time out authentication
210 * This function is used to schedule a timeout for the current authentication
213 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
216 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
217 wpa_s->driver && IS_WIRED(wpa_s->driver))
220 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
221 "%d usec", sec, usec);
222 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
223 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
228 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
229 * @wpa_s: Pointer to wpa_supplicant data
231 * This function is used to cancel authentication timeout scheduled with
232 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
235 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
237 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
238 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
239 wpa_blacklist_del(wpa_s, wpa_s->bssid);
244 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
245 * @wpa_s: Pointer to wpa_supplicant data
247 * This function is used to configure EAPOL state machine based on the selected
248 * authentication mode.
250 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
252 #ifdef IEEE8021X_EAPOL
253 struct eapol_config eapol_conf;
254 struct wpa_ssid *ssid = wpa_s->current_ssid;
256 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
257 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
259 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
260 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
261 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
263 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
265 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
266 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
267 eapol_conf.accept_802_1x_keys = 1;
268 eapol_conf.required_keys = 0;
269 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
270 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
272 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
273 eapol_conf.required_keys |=
274 EAPOL_REQUIRE_KEY_BROADCAST;
277 if (wpa_s->conf && wpa_s->driver && IS_WIRED(wpa_s->driver)) {
278 eapol_conf.required_keys = 0;
282 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
283 eapol_conf.workaround = ssid->eap_workaround;
284 eapol_conf.eap_disabled =
285 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
286 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
287 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
288 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
289 #endif /* IEEE8021X_EAPOL */
294 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
295 * @wpa_s: Pointer to wpa_supplicant data
296 * @ssid: Configuration data for the network
298 * This function is used to configure WPA state machine and related parameters
299 * to a mode where WPA is not enabled. This is called as part of the
300 * authentication configuration when the selected network does not use WPA.
302 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
303 struct wpa_ssid *ssid)
307 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
308 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
309 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
310 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
312 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
313 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
314 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
315 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
316 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
317 wpa_s->group_cipher = WPA_CIPHER_NONE;
318 wpa_s->mgmt_group_cipher = 0;
320 for (i = 0; i < NUM_WEP_KEYS; i++) {
321 if (ssid->wep_key_len[i] > 5) {
322 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
323 wpa_s->group_cipher = WPA_CIPHER_WEP104;
325 } else if (ssid->wep_key_len[i] > 0) {
326 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
327 wpa_s->group_cipher = WPA_CIPHER_WEP40;
332 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
333 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
334 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
335 wpa_s->pairwise_cipher);
336 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
337 #ifdef CONFIG_IEEE80211W
338 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
339 wpa_s->mgmt_group_cipher);
340 #endif /* CONFIG_IEEE80211W */
342 pmksa_cache_clear_current(wpa_s->wpa);
346 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
348 scard_deinit(wpa_s->scard);
350 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
351 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
352 l2_packet_deinit(wpa_s->l2);
355 l2_packet_deinit(wpa_s->l2_br);
359 if (wpa_s->ctrl_iface) {
360 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
361 wpa_s->ctrl_iface = NULL;
363 if (wpa_s->conf != NULL) {
364 wpa_config_free(wpa_s->conf);
368 os_free(wpa_s->confname);
369 wpa_s->confname = NULL;
371 wpa_sm_set_eapol(wpa_s->wpa, NULL);
372 eapol_sm_deinit(wpa_s->eapol);
375 rsn_preauth_deinit(wpa_s->wpa);
377 pmksa_candidate_free(wpa_s->wpa);
378 wpa_sm_deinit(wpa_s->wpa);
380 wpa_blacklist_clear(wpa_s);
382 wpa_scan_results_free(wpa_s->scan_res);
383 wpa_s->scan_res = NULL;
385 wpa_supplicant_cancel_scan(wpa_s);
386 wpa_supplicant_cancel_auth_timeout(wpa_s);
388 ieee80211_sta_deinit(wpa_s);
390 wpas_wps_deinit(wpa_s);
395 * wpa_clear_keys - Clear keys configured for the driver
396 * @wpa_s: Pointer to wpa_supplicant data
397 * @addr: Previously used BSSID or %NULL if not available
399 * This function clears the encryption keys that has been previously configured
402 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
404 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
406 if (wpa_s->keys_cleared) {
407 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
408 * timing issues with keys being cleared just before new keys
409 * are set or just after association or something similar. This
410 * shows up in group key handshake failing often because of the
411 * client not receiving the first encrypted packets correctly.
412 * Skipping some of the extra key clearing steps seems to help
413 * in completing group key handshake more reliably. */
414 wpa_printf(MSG_DEBUG, "No keys have been configured - "
415 "skip key clearing");
419 /* MLME-DELETEKEYS.request */
420 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
421 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
422 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
423 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
425 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
427 /* MLME-SETPROTECTION.request(None) */
428 wpa_drv_mlme_setprotection(
430 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
431 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
433 wpa_s->keys_cleared = 1;
438 * wpa_supplicant_state_txt - Get the connection state name as a text string
439 * @state: State (wpa_state; WPA_*)
440 * Returns: The state name as a printable text string
442 const char * wpa_supplicant_state_txt(int state)
445 case WPA_DISCONNECTED:
446 return "DISCONNECTED";
451 case WPA_ASSOCIATING:
452 return "ASSOCIATING";
455 case WPA_4WAY_HANDSHAKE:
456 return "4WAY_HANDSHAKE";
457 case WPA_GROUP_HANDSHAKE:
458 return "GROUP_HANDSHAKE";
468 * wpa_supplicant_set_state - Set current connection state
469 * @wpa_s: Pointer to wpa_supplicant data
470 * @state: The new connection state
472 * This function is called whenever the connection state changes, e.g.,
473 * association is completed for WPA/WPA2 4-Way Handshake is started.
475 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
477 wpa_printf(MSG_DEBUG, "State: %s -> %s",
478 wpa_supplicant_state_txt(wpa_s->wpa_state),
479 wpa_supplicant_state_txt(state));
481 wpa_supplicant_dbus_notify_state_change(wpa_s, state,
484 if (state == WPA_COMPLETED && wpa_s->new_connection) {
485 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
486 struct wpa_ssid *ssid = wpa_s->current_ssid;
487 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
488 MACSTR " completed %s [id=%d id_str=%s]",
489 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
490 "(reauth)" : "(auth)",
491 ssid ? ssid->id : -1,
492 ssid && ssid->id_str ? ssid->id_str : "");
493 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
494 wpa_s->new_connection = 0;
495 wpa_s->reassociated_connection = 1;
496 wpa_drv_set_operstate(wpa_s, 1);
497 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
498 state == WPA_ASSOCIATED) {
499 wpa_s->new_connection = 1;
500 wpa_drv_set_operstate(wpa_s, 0);
502 wpa_s->wpa_state = state;
506 static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
509 struct wpa_global *global = eloop_ctx;
510 struct wpa_supplicant *wpa_s;
511 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
512 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
519 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
521 wpa_s->pairwise_cipher = 0;
522 wpa_s->group_cipher = 0;
523 wpa_s->mgmt_group_cipher = 0;
525 wpa_s->wpa_state = WPA_DISCONNECTED;
530 * wpa_supplicant_reload_configuration - Reload configuration data
531 * @wpa_s: Pointer to wpa_supplicant data
532 * Returns: 0 on success or -1 if configuration parsing failed
534 * This function can be used to request that the configuration data is reloaded
535 * (e.g., after configuration file change). This function is reloading
536 * configuration only for one interface, so this may need to be called multiple
537 * times if %wpa_supplicant is controlling multiple interfaces and all
538 * interfaces need reconfiguration.
540 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
542 struct wpa_config *conf;
544 if (wpa_s->confname == NULL)
546 conf = wpa_config_read(wpa_s->confname);
548 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
549 "file '%s' - exiting", wpa_s->confname);
553 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
554 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
555 os_strcmp(conf->ctrl_interface,
556 wpa_s->conf->ctrl_interface) != 0);
558 if (reconf_ctrl && wpa_s->ctrl_iface) {
559 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
560 wpa_s->ctrl_iface = NULL;
563 eapol_sm_invalidate_cached_session(wpa_s->eapol);
564 wpa_s->current_ssid = NULL;
566 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
567 * pkcs11_engine_path, pkcs11_module_path.
569 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
571 * Clear forced success to clear EAP state for next
574 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
576 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
577 wpa_sm_set_config(wpa_s->wpa, NULL);
578 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
579 rsn_preauth_deinit(wpa_s->wpa);
580 wpa_config_free(wpa_s->conf);
583 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
585 wpa_supplicant_clear_status(wpa_s);
586 wpa_s->reassociate = 1;
587 wpa_supplicant_req_scan(wpa_s, 0, 0);
588 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
593 static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
596 struct wpa_global *global = eloop_ctx;
597 struct wpa_supplicant *wpa_s;
598 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
599 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
600 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
607 static wpa_cipher cipher_suite2driver(int cipher)
610 case WPA_CIPHER_NONE:
612 case WPA_CIPHER_WEP40:
614 case WPA_CIPHER_WEP104:
615 return CIPHER_WEP104;
616 case WPA_CIPHER_CCMP:
618 case WPA_CIPHER_TKIP:
625 static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
628 case WPA_KEY_MGMT_NONE:
629 return KEY_MGMT_NONE;
630 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
631 return KEY_MGMT_802_1X_NO_WPA;
632 case WPA_KEY_MGMT_IEEE8021X:
633 return KEY_MGMT_802_1X;
634 case WPA_KEY_MGMT_WPA_NONE:
635 return KEY_MGMT_WPA_NONE;
636 case WPA_KEY_MGMT_FT_IEEE8021X:
637 return KEY_MGMT_FT_802_1X;
638 case WPA_KEY_MGMT_FT_PSK:
639 return KEY_MGMT_FT_PSK;
640 case WPA_KEY_MGMT_IEEE8021X_SHA256:
641 return KEY_MGMT_802_1X_SHA256;
642 case WPA_KEY_MGMT_PSK_SHA256:
643 return KEY_MGMT_PSK_SHA256;
644 case WPA_KEY_MGMT_WPS:
646 case WPA_KEY_MGMT_PSK:
653 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
654 struct wpa_ssid *ssid,
655 struct wpa_ie_data *ie)
657 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
660 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
661 "from association info");
666 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
668 if (!(ie->group_cipher & ssid->group_cipher)) {
669 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
670 "cipher 0x%x (mask 0x%x) - reject",
671 ie->group_cipher, ssid->group_cipher);
674 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
675 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
676 "cipher 0x%x (mask 0x%x) - reject",
677 ie->pairwise_cipher, ssid->pairwise_cipher);
680 if (!(ie->key_mgmt & ssid->key_mgmt)) {
681 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
682 "management 0x%x (mask 0x%x) - reject",
683 ie->key_mgmt, ssid->key_mgmt);
687 #ifdef CONFIG_IEEE80211W
688 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
689 ssid->ieee80211w == IEEE80211W_REQUIRED) {
690 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
691 "that does not support management frame protection - "
695 #endif /* CONFIG_IEEE80211W */
702 * wpa_supplicant_set_suites - Set authentication and encryption parameters
703 * @wpa_s: Pointer to wpa_supplicant data
704 * @bss: Scan results for the selected BSS, or %NULL if not available
705 * @ssid: Configuration data for the selected network
706 * @wpa_ie: Buffer for the WPA/RSN IE
707 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
708 * used buffer length in case the functions returns success.
709 * Returns: 0 on success or -1 on failure
711 * This function is used to configure authentication and encryption parameters
712 * based on the network configuration and scan result for the selected BSS (if
715 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
716 struct wpa_scan_res *bss,
717 struct wpa_ssid *ssid,
718 u8 *wpa_ie, size_t *wpa_ie_len)
720 struct wpa_ie_data ie;
722 const u8 *bss_wpa, *bss_rsn;
725 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
726 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
728 bss_wpa = bss_rsn = NULL;
730 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
731 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
732 (ie.group_cipher & ssid->group_cipher) &&
733 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
734 (ie.key_mgmt & ssid->key_mgmt)) {
735 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
736 proto = WPA_PROTO_RSN;
737 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
738 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
739 (ie.group_cipher & ssid->group_cipher) &&
740 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
741 (ie.key_mgmt & ssid->key_mgmt)) {
742 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
743 proto = WPA_PROTO_WPA;
745 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
748 if (ssid->proto & WPA_PROTO_RSN)
749 proto = WPA_PROTO_RSN;
751 proto = WPA_PROTO_WPA;
752 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
753 os_memset(&ie, 0, sizeof(ie));
754 ie.group_cipher = ssid->group_cipher;
755 ie.pairwise_cipher = ssid->pairwise_cipher;
756 ie.key_mgmt = ssid->key_mgmt;
757 #ifdef CONFIG_IEEE80211W
758 ie.mgmt_group_cipher =
759 ssid->ieee80211w != NO_IEEE80211W ?
760 WPA_CIPHER_AES_128_CMAC : 0;
761 #endif /* CONFIG_IEEE80211W */
762 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
768 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
769 "pairwise %d key_mgmt %d proto %d",
770 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
771 #ifdef CONFIG_IEEE80211W
772 if (ssid->ieee80211w) {
773 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
774 ie.mgmt_group_cipher);
776 #endif /* CONFIG_IEEE80211W */
778 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
779 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
780 !!(ssid->proto & WPA_PROTO_RSN));
782 if (bss || !wpa_s->ap_ies_from_associnfo) {
783 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
784 bss_wpa ? 2 + bss_wpa[1] : 0) ||
785 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
786 bss_rsn ? 2 + bss_rsn[1] : 0))
790 sel = ie.group_cipher & ssid->group_cipher;
791 if (sel & WPA_CIPHER_CCMP) {
792 wpa_s->group_cipher = WPA_CIPHER_CCMP;
793 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
794 } else if (sel & WPA_CIPHER_TKIP) {
795 wpa_s->group_cipher = WPA_CIPHER_TKIP;
796 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
797 } else if (sel & WPA_CIPHER_WEP104) {
798 wpa_s->group_cipher = WPA_CIPHER_WEP104;
799 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
800 } else if (sel & WPA_CIPHER_WEP40) {
801 wpa_s->group_cipher = WPA_CIPHER_WEP40;
802 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
804 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
808 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
809 if (sel & WPA_CIPHER_CCMP) {
810 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
811 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
812 } else if (sel & WPA_CIPHER_TKIP) {
813 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
814 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
815 } else if (sel & WPA_CIPHER_NONE) {
816 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
817 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
819 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
824 sel = ie.key_mgmt & ssid->key_mgmt;
826 #ifdef CONFIG_IEEE80211R
827 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
828 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
829 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
830 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
831 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
832 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
833 #endif /* CONFIG_IEEE80211R */
834 #ifdef CONFIG_IEEE80211W
835 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
836 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
837 wpa_msg(wpa_s, MSG_DEBUG,
838 "WPA: using KEY_MGMT 802.1X with SHA256");
839 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
840 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
841 wpa_msg(wpa_s, MSG_DEBUG,
842 "WPA: using KEY_MGMT PSK with SHA256");
843 #endif /* CONFIG_IEEE80211W */
844 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
845 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
846 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
847 } else if (sel & WPA_KEY_MGMT_PSK) {
848 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
849 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
850 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
851 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
852 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
854 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
855 "key management type.");
859 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
860 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
861 wpa_s->pairwise_cipher);
862 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
864 #ifdef CONFIG_IEEE80211W
865 sel = ie.mgmt_group_cipher;
866 if (ssid->ieee80211w == NO_IEEE80211W ||
867 !(ie.capabilities & WPA_CAPABILITY_MFPC))
869 if (sel & WPA_CIPHER_AES_128_CMAC) {
870 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
871 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
874 wpa_s->mgmt_group_cipher = 0;
875 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
877 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
878 wpa_s->mgmt_group_cipher);
879 #endif /* CONFIG_IEEE80211W */
881 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
882 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
887 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
888 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
890 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
897 * wpa_supplicant_associate - Request association
898 * @wpa_s: Pointer to wpa_supplicant data
899 * @bss: Scan results for the selected BSS, or %NULL if not available
900 * @ssid: Configuration data for the selected network
902 * This function is used to request %wpa_supplicant to associate with a BSS.
904 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
905 struct wpa_scan_res *bss, struct wpa_ssid *ssid)
909 int use_crypt, ret, i;
910 int algs = AUTH_ALG_OPEN_SYSTEM;
911 wpa_cipher cipher_pairwise, cipher_group;
912 struct wpa_driver_associate_params params;
913 int wep_keys_set = 0;
914 struct wpa_driver_capa capa;
915 int assoc_failed = 0;
917 wpa_s->reassociate = 0;
919 #ifdef CONFIG_IEEE80211R
921 #endif /* CONFIG_IEEE80211R */
922 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
923 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
924 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
925 ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
926 os_memset(wpa_s->bssid, 0, ETH_ALEN);
927 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
928 #ifdef CONFIG_IEEE80211R
929 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
930 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
932 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
934 /* Prepare for the next transition */
935 wpa_ft_prepare_auth_request(wpa_s->wpa);
937 #endif /* CONFIG_IEEE80211R */
939 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
940 wpa_s->conf->ap_scan == 2 &&
941 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
942 /* Use ap_scan==1 style network selection to find the network
945 wpa_s->reassociate = 1;
946 wpa_supplicant_req_scan(wpa_s, 0, 0);
948 #endif /* CONFIG_WPS */
950 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
951 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
952 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
954 wpa_supplicant_cancel_scan(wpa_s);
956 /* Starting new association, so clear the possibly used WPA IE from the
957 * previous association. */
958 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
960 if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
961 wpa_printf(MSG_WARNING, "Failed to set operating mode");
965 #ifdef IEEE8021X_EAPOL
966 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
968 if (ssid->non_leap == 0)
969 algs = AUTH_ALG_LEAP;
971 algs |= AUTH_ALG_LEAP;
974 #endif /* IEEE8021X_EAPOL */
975 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
976 if (ssid->auth_alg) {
978 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
979 algs |= AUTH_ALG_OPEN_SYSTEM;
980 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
981 algs |= AUTH_ALG_SHARED_KEY;
982 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
983 algs |= AUTH_ALG_LEAP;
984 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
987 wpa_drv_set_auth_alg(wpa_s, algs);
989 if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
990 wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
991 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
992 WPA_KEY_MGMT_FT_IEEE8021X |
993 WPA_KEY_MGMT_FT_PSK |
994 WPA_KEY_MGMT_IEEE8021X_SHA256 |
995 WPA_KEY_MGMT_PSK_SHA256))) {
996 int try_opportunistic;
997 try_opportunistic = ssid->proactive_key_caching &&
998 (ssid->proto & WPA_PROTO_RSN);
999 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1000 wpa_s->current_ssid,
1001 try_opportunistic) == 0)
1002 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1003 wpa_ie_len = sizeof(wpa_ie);
1004 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1005 wpa_ie, &wpa_ie_len)) {
1006 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1007 "management and encryption suites");
1010 } else if (ssid->key_mgmt &
1011 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1012 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1013 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1014 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1015 wpa_ie_len = sizeof(wpa_ie);
1016 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1017 wpa_ie, &wpa_ie_len)) {
1018 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1019 "management and encryption suites (no scan "
1024 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1025 struct wpabuf *wps_ie;
1026 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1027 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1028 wpa_ie_len = wpabuf_len(wps_ie);
1029 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1031 wpabuf_free(wps_ie);
1032 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1033 #endif /* CONFIG_WPS */
1035 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1039 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1041 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1042 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1043 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1044 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1045 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1047 if (wpa_set_wep_keys(wpa_s, ssid)) {
1052 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1055 #ifdef IEEE8021X_EAPOL
1056 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1057 if ((ssid->eapol_flags &
1058 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1059 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1063 /* Assume that dynamic WEP-104 keys will be used and
1064 * set cipher suites in order for drivers to expect
1066 cipher_pairwise = cipher_group = CIPHER_WEP104;
1069 #endif /* IEEE8021X_EAPOL */
1071 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1072 /* Set the key before (and later after) association */
1073 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1076 wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1077 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1078 os_memset(¶ms, 0, sizeof(params));
1080 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1081 params.bssid = bss->bssid;
1082 params.ssid = ie ? ie + 2 : (u8 *) "";
1083 params.ssid_len = ie ? ie[1] : 0;
1084 params.freq = bss->freq;
1086 params.ssid = ssid->ssid;
1087 params.ssid_len = ssid->ssid_len;
1089 if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1090 params.freq = ssid->frequency; /* Initial channel for IBSS */
1091 params.wpa_ie = wpa_ie;
1092 params.wpa_ie_len = wpa_ie_len;
1093 params.pairwise_suite = cipher_pairwise;
1094 params.group_suite = cipher_group;
1095 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1096 params.auth_alg = algs;
1097 params.mode = ssid->mode;
1098 for (i = 0; i < NUM_WEP_KEYS; i++) {
1099 if (ssid->wep_key_len[i])
1100 params.wep_key[i] = ssid->wep_key[i];
1101 params.wep_key_len[i] = ssid->wep_key_len[i];
1103 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1105 if (wpa_s->driver_4way_handshake &&
1106 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1107 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1108 params.passphrase = ssid->passphrase;
1110 params.psk = ssid->psk;
1113 #ifdef CONFIG_IEEE80211W
1114 switch (ssid->ieee80211w) {
1116 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1118 case IEEE80211W_OPTIONAL:
1119 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1121 case IEEE80211W_REQUIRED:
1122 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1125 if (ssid->ieee80211w != NO_IEEE80211W && bss) {
1126 const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1127 struct wpa_ie_data ie;
1128 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1130 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1131 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1133 params.mgmt_frame_protection =
1134 MGMT_FRAME_PROTECTION_REQUIRED;
1137 #endif /* CONFIG_IEEE80211W */
1139 if (wpa_s->use_client_mlme)
1140 ret = ieee80211_sta_associate(wpa_s, ¶ms);
1142 ret = wpa_drv_associate(wpa_s, ¶ms);
1144 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1146 /* try to continue anyway; new association will be tried again
1151 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1152 /* Set the key after the association just in case association
1153 * cleared the previously configured key. */
1154 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1155 /* No need to timeout authentication since there is no key
1157 wpa_supplicant_cancel_auth_timeout(wpa_s);
1158 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1160 /* Timeout for IEEE 802.11 authentication and association */
1164 /* give IBSS a bit more time */
1165 timeout = ssid->mode ? 10 : 5;
1166 } else if (wpa_s->conf->ap_scan == 1) {
1167 /* give IBSS a bit more time */
1168 timeout = ssid->mode ? 20 : 10;
1170 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1173 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1174 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1175 /* Set static WEP keys again */
1176 wpa_set_wep_keys(wpa_s, ssid);
1179 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1181 * Do not allow EAP session resumption between different
1182 * network configurations.
1184 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1186 wpa_s->current_ssid = ssid;
1187 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1188 wpa_supplicant_initiate_eapol(wpa_s);
1193 * wpa_supplicant_disassociate - Disassociate the current connection
1194 * @wpa_s: Pointer to wpa_supplicant data
1195 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1197 * This function is used to request %wpa_supplicant to disassociate with the
1200 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1204 if (!is_zero_ether_addr(wpa_s->bssid)) {
1205 if (wpa_s->use_client_mlme)
1206 ieee80211_sta_disassociate(wpa_s, reason_code);
1208 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1209 addr = wpa_s->bssid;
1211 wpa_clear_keys(wpa_s, addr);
1212 wpa_supplicant_mark_disassoc(wpa_s);
1213 wpa_s->current_ssid = NULL;
1214 wpa_sm_set_config(wpa_s->wpa, NULL);
1215 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1220 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1221 * @wpa_s: Pointer to wpa_supplicant data
1222 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1224 * This function is used to request %wpa_supplicant to disassociate with the
1227 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1231 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1232 if (!is_zero_ether_addr(wpa_s->bssid)) {
1233 if (wpa_s->use_client_mlme)
1234 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1236 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1238 addr = wpa_s->bssid;
1240 wpa_clear_keys(wpa_s, addr);
1241 wpa_s->current_ssid = NULL;
1242 wpa_sm_set_config(wpa_s->wpa, NULL);
1243 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1244 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1245 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1249 static int wpa_supplicant_get_scan_results_old(struct wpa_supplicant *wpa_s)
1251 #define SCAN_AP_LIMIT 128
1252 struct wpa_scan_result *results;
1254 struct wpa_scan_results *res;
1256 results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1257 if (results == NULL) {
1258 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1263 num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1264 wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1266 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1270 if (num > SCAN_AP_LIMIT) {
1271 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1272 num, SCAN_AP_LIMIT);
1273 num = SCAN_AP_LIMIT;
1276 wpa_scan_results_free(wpa_s->scan_res);
1277 wpa_s->scan_res = NULL;
1279 /* Convert old scan result data structure to the new one */
1280 res = os_zalloc(sizeof(*res));
1285 res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1286 if (res->res == NULL) {
1292 for (i = 0; i < num; i++) {
1293 struct wpa_scan_result *bss = &results[i];
1294 struct wpa_scan_res *r;
1298 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1301 if (bss->mdie_present)
1304 r = os_zalloc(sizeof(*r) + ie_len);
1308 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1309 r->freq = bss->freq;
1310 r->caps = bss->caps;
1311 r->qual = bss->qual;
1312 r->noise = bss->noise;
1313 r->level = bss->level;
1317 pos = (u8 *) (r + 1);
1320 *pos++ = WLAN_EID_SSID;
1321 *pos++ = bss->ssid_len;
1322 os_memcpy(pos, bss->ssid, bss->ssid_len);
1323 pos += bss->ssid_len;
1326 /* Fake Supported Rate IE to include max rate */
1327 *pos++ = WLAN_EID_SUPP_RATES;
1329 *pos++ = bss->maxrate;
1332 if (bss->rsn_ie_len) {
1333 os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1334 pos += bss->rsn_ie_len;
1337 if (bss->mdie_present) {
1338 os_memcpy(pos, bss->mdie, 5);
1342 if (bss->wpa_ie_len) {
1343 os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1344 pos += bss->wpa_ie_len;
1347 res->res[res->num++] = r;
1351 wpa_s->scan_res = res;
1358 * wpa_supplicant_get_scan_results - Get scan results
1359 * @wpa_s: Pointer to wpa_supplicant data
1360 * Returns: 0 on success, -1 on failure
1362 * This function is request the current scan results from the driver and stores
1363 * a local copy of the results in wpa_s->scan_res.
1365 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1369 if (wpa_s->use_client_mlme) {
1370 wpa_scan_results_free(wpa_s->scan_res);
1371 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1372 if (wpa_s->scan_res == NULL) {
1373 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1377 } else if (wpa_s->driver->get_scan_results2 == NULL)
1378 ret = wpa_supplicant_get_scan_results_old(wpa_s);
1380 wpa_scan_results_free(wpa_s->scan_res);
1381 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1382 if (wpa_s->scan_res == NULL) {
1383 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1389 if (wpa_s->scan_res)
1390 wpa_scan_sort_results(wpa_s->scan_res);
1397 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1398 * @wpa_s: Pointer to wpa_supplicant data
1399 * Returns: A pointer to the current network structure or %NULL on failure
1401 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1403 struct wpa_ssid *entry;
1404 u8 ssid[MAX_SSID_LEN];
1410 if (wpa_s->use_client_mlme) {
1411 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1412 wpa_printf(MSG_WARNING, "Could not read SSID from "
1417 res = wpa_drv_get_ssid(wpa_s, ssid);
1419 wpa_printf(MSG_WARNING, "Could not read SSID from "
1426 if (wpa_s->use_client_mlme)
1427 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1428 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1429 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1433 wired = wpa_s->conf->ap_scan == 0 && wpa_s->driver &&
1434 IS_WIRED(wpa_s->driver);
1436 entry = wpa_s->conf->ssid;
1438 if (!entry->disabled &&
1439 ((ssid_len == entry->ssid_len &&
1440 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1441 (!entry->bssid_set ||
1442 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1445 if (!entry->disabled &&
1446 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1447 (entry->ssid == NULL || entry->ssid_len == 0) &&
1448 (!entry->bssid_set ||
1449 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1451 #endif /* CONFIG_WPS */
1452 entry = entry->next;
1459 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1467 if (wpa_supplicant_drivers[0] == NULL) {
1468 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1474 /* default to first driver in the list */
1475 wpa_s->driver = wpa_supplicant_drivers[0];
1479 for (i = 0; wpa_supplicant_drivers[i]; i++) {
1480 if (os_strcmp(name, wpa_supplicant_drivers[i]->name) == 0) {
1481 wpa_s->driver = wpa_supplicant_drivers[i];
1486 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.\n", name);
1491 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1492 const u8 *buf, size_t len)
1494 struct wpa_supplicant *wpa_s = ctx;
1496 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1497 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1499 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1500 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1501 "no key management is configured");
1505 if (wpa_s->eapol_received == 0 &&
1506 (!wpa_s->driver_4way_handshake ||
1507 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1508 wpa_s->wpa_state != WPA_COMPLETED)) {
1509 /* Timeout for completing IEEE 802.1X and WPA authentication */
1510 wpa_supplicant_req_auth_timeout(
1512 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1513 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1514 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1517 wpa_s->eapol_received++;
1519 if (wpa_s->countermeasures) {
1520 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1525 /* Source address of the incoming EAPOL frame could be compared to the
1526 * current BSSID. However, it is possible that a centralized
1527 * Authenticator could be using another MAC address than the BSSID of
1528 * an AP, so just allow any address to be used for now. The replies are
1529 * still sent to the current BSSID (if available), though. */
1531 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1532 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1533 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1535 wpa_drv_poll(wpa_s);
1536 if (!wpa_s->driver_4way_handshake)
1537 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1538 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1540 * Set portValid = TRUE here since we are going to skip 4-way
1541 * handshake processing which would normally set portValid. We
1542 * need this to allow the EAPOL state machines to be completed
1543 * without going through EAPOL-Key handshake.
1545 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1550 void wpa_supplicant_sta_free_hw_features(struct wpa_hw_modes *hw_features,
1551 size_t num_hw_features)
1553 ieee80211_sta_free_hw_features(hw_features, num_hw_features);
1557 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1558 struct ieee80211_rx_status *rx_status)
1560 struct wpa_supplicant *wpa_s = ctx;
1561 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1566 * wpa_supplicant_driver_init - Initialize driver interface parameters
1567 * @wpa_s: Pointer to wpa_supplicant data
1568 * Returns: 0 on success, -1 on failure
1570 * This function is called to initialize driver interface parameters.
1571 * wpa_drv_init() must have been called before this function to initialize the
1574 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1576 static int interface_count = 0;
1578 if (wpa_s->driver->send_eapol) {
1579 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1581 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1583 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1584 wpa_drv_get_mac_addr(wpa_s),
1586 wpa_supplicant_rx_eapol, wpa_s, 0);
1587 if (wpa_s->l2 == NULL)
1591 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1592 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1596 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1597 MAC2STR(wpa_s->own_addr));
1599 if (wpa_s->bridge_ifname[0]) {
1600 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1601 " '%s'", wpa_s->bridge_ifname);
1602 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1605 wpa_supplicant_rx_eapol, wpa_s,
1607 if (wpa_s->l2_br == NULL) {
1608 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1609 "connection for the bridge interface '%s'",
1610 wpa_s->bridge_ifname);
1615 /* Backwards compatibility call to set_wpa() handler. This is called
1616 * only just after init and just before deinit, so these handler can be
1617 * used to implement same functionality. */
1618 if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1619 struct wpa_driver_capa capa;
1620 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1621 !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1622 WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1623 wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1624 /* Continue to allow non-WPA modes to be used. */
1626 wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1632 wpa_clear_keys(wpa_s, NULL);
1634 /* Make sure that TKIP countermeasures are not left enabled (could
1635 * happen if wpa_supplicant is killed during countermeasures. */
1636 wpa_drv_set_countermeasures(wpa_s, 0);
1638 wpa_drv_set_drop_unencrypted(wpa_s, 1);
1640 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1641 wpa_drv_flush_pmkid(wpa_s);
1643 wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
1644 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1651 static int wpa_supplicant_daemon(const char *pid_file)
1653 wpa_printf(MSG_DEBUG, "Daemonize..");
1654 return os_daemonize(pid_file);
1658 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1660 struct wpa_supplicant *wpa_s;
1662 wpa_s = os_zalloc(sizeof(*wpa_s));
1665 wpa_s->scan_req = 1;
1671 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1672 struct wpa_interface *iface)
1674 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1675 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1676 iface->confname ? iface->confname : "N/A",
1677 iface->driver ? iface->driver : "default",
1678 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1679 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1681 if (wpa_supplicant_set_driver(wpa_s, iface->driver) < 0) {
1685 if (iface->confname) {
1686 #ifdef CONFIG_BACKEND_FILE
1687 wpa_s->confname = os_rel2abs_path(iface->confname);
1688 if (wpa_s->confname == NULL) {
1689 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1690 "for configuration file '%s'.",
1694 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1695 iface->confname, wpa_s->confname);
1696 #else /* CONFIG_BACKEND_FILE */
1697 wpa_s->confname = os_strdup(iface->confname);
1698 #endif /* CONFIG_BACKEND_FILE */
1699 wpa_s->conf = wpa_config_read(wpa_s->confname);
1700 if (wpa_s->conf == NULL) {
1701 wpa_printf(MSG_ERROR, "Failed to read or parse "
1702 "configuration '%s'.", wpa_s->confname);
1707 * Override ctrl_interface and driver_param if set on command
1710 if (iface->ctrl_interface) {
1711 os_free(wpa_s->conf->ctrl_interface);
1712 wpa_s->conf->ctrl_interface =
1713 os_strdup(iface->ctrl_interface);
1716 if (iface->driver_param) {
1717 os_free(wpa_s->conf->driver_param);
1718 wpa_s->conf->driver_param =
1719 os_strdup(iface->driver_param);
1722 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1723 iface->driver_param);
1725 if (wpa_s->conf == NULL) {
1726 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1730 if (iface->ifname == NULL) {
1731 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1734 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1735 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1739 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1741 if (iface->bridge_ifname) {
1742 if (os_strlen(iface->bridge_ifname) >=
1743 sizeof(wpa_s->bridge_ifname)) {
1744 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1745 "name '%s'.", iface->bridge_ifname);
1748 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1749 sizeof(wpa_s->bridge_ifname));
1756 static int wpa_supplicant_init_iface2(struct wpa_supplicant *wpa_s)
1759 struct wpa_driver_capa capa;
1761 wpa_printf(MSG_DEBUG, "Initializing interface (2) '%s'",
1764 /* RSNA Supplicant Key Management - INITIALIZE */
1765 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1766 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1768 /* Initialize driver interface and register driver event handler before
1769 * L2 receive handler so that association events are processed before
1770 * EAPOL-Key packets if both become available for the same select()
1772 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1773 if (wpa_s->drv_priv == NULL) {
1774 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1777 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1778 wpa_printf(MSG_ERROR, "Driver interface rejected "
1779 "driver_param '%s'", wpa_s->conf->driver_param);
1783 ifname = wpa_drv_get_ifname(wpa_s);
1784 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1785 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
1786 "name with '%s'", ifname);
1787 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
1790 if (wpa_supplicant_init_wpa(wpa_s) < 0)
1793 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
1794 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
1796 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
1798 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
1799 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
1800 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
1801 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1802 "dot11RSNAConfigPMKLifetime");
1806 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
1807 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
1808 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
1809 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1810 "dot11RSNAConfigPMKReauthThreshold");
1814 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
1815 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
1816 wpa_s->conf->dot11RSNAConfigSATimeout)) {
1817 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1818 "dot11RSNAConfigSATimeout");
1822 if (wpa_supplicant_driver_init(wpa_s) < 0)
1825 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
1826 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
1827 wpa_printf(MSG_DEBUG, "Failed to set country");
1831 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
1833 if (wpas_wps_init(wpa_s))
1836 if (wpa_supplicant_init_eapol(wpa_s) < 0)
1838 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
1840 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
1841 if (wpa_s->ctrl_iface == NULL) {
1842 wpa_printf(MSG_ERROR,
1843 "Failed to initialize control interface '%s'.\n"
1844 "You may have another wpa_supplicant process "
1845 "already running or the file was\n"
1846 "left by an unclean termination of wpa_supplicant "
1847 "in which case you will need\n"
1848 "to manually remove this file before starting "
1849 "wpa_supplicant again.\n",
1850 wpa_s->conf->ctrl_interface);
1854 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
1855 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1856 wpa_s->use_client_mlme = 1;
1857 if (ieee80211_sta_init(wpa_s))
1860 if (capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)
1861 wpa_s->driver_4way_handshake = 1;
1868 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
1870 if (wpa_s->drv_priv) {
1871 wpa_supplicant_deauthenticate(wpa_s,
1872 WLAN_REASON_DEAUTH_LEAVING);
1874 /* Backwards compatibility call to set_wpa() handler. This is
1875 * called only just after init and just before deinit, so these
1876 * handler can be used to implement same functionality. */
1877 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
1878 wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
1882 wpa_drv_set_drop_unencrypted(wpa_s, 0);
1883 wpa_drv_set_countermeasures(wpa_s, 0);
1884 wpa_clear_keys(wpa_s, NULL);
1887 wpas_dbus_unregister_iface(wpa_s);
1889 wpa_supplicant_cleanup(wpa_s);
1891 if (wpa_s->drv_priv)
1892 wpa_drv_deinit(wpa_s);
1897 * wpa_supplicant_add_iface - Add a new network interface
1898 * @global: Pointer to global data from wpa_supplicant_init()
1899 * @iface: Interface configuration options
1900 * Returns: Pointer to the created interface or %NULL on failure
1902 * This function is used to add new network interfaces for %wpa_supplicant.
1903 * This can be called before wpa_supplicant_run() to add interfaces before the
1904 * main event loop has been started. In addition, new interfaces can be added
1905 * dynamically while %wpa_supplicant is already running. This could happen,
1906 * e.g., when a hotplug network adapter is inserted.
1908 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
1909 struct wpa_interface *iface)
1911 struct wpa_supplicant *wpa_s;
1913 if (global == NULL || iface == NULL)
1916 wpa_s = wpa_supplicant_alloc();
1920 if (wpa_supplicant_init_iface(wpa_s, iface) ||
1921 wpa_supplicant_init_iface2(wpa_s)) {
1922 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
1924 wpa_supplicant_deinit_iface(wpa_s);
1929 wpa_s->global = global;
1931 /* Register the interface with the dbus control interface */
1932 if (wpas_dbus_register_iface(wpa_s)) {
1933 wpa_supplicant_deinit_iface(wpa_s);
1938 wpa_s->next = global->ifaces;
1939 global->ifaces = wpa_s;
1941 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
1948 * wpa_supplicant_remove_iface - Remove a network interface
1949 * @global: Pointer to global data from wpa_supplicant_init()
1950 * @wpa_s: Pointer to the network interface to be removed
1951 * Returns: 0 if interface was removed, -1 if interface was not found
1953 * This function can be used to dynamically remove network interfaces from
1954 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
1955 * addition, this function is used to remove all remaining interfaces when
1956 * %wpa_supplicant is terminated.
1958 int wpa_supplicant_remove_iface(struct wpa_global *global,
1959 struct wpa_supplicant *wpa_s)
1961 struct wpa_supplicant *prev;
1963 /* Remove interface from the global list of interfaces */
1964 prev = global->ifaces;
1965 if (prev == wpa_s) {
1966 global->ifaces = wpa_s->next;
1968 while (prev && prev->next != wpa_s)
1972 prev->next = wpa_s->next;
1975 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
1977 wpa_supplicant_deinit_iface(wpa_s);
1985 * wpa_supplicant_get_iface - Get a new network interface
1986 * @global: Pointer to global data from wpa_supplicant_init()
1987 * @ifname: Interface name
1988 * Returns: Pointer to the interface or %NULL if not found
1990 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
1993 struct wpa_supplicant *wpa_s;
1995 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
1996 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2004 * wpa_supplicant_init - Initialize %wpa_supplicant
2005 * @params: Parameters for %wpa_supplicant
2006 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2008 * This function is used to initialize %wpa_supplicant. After successful
2009 * initialization, the returned data pointer can be used to add and remove
2010 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2012 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2014 struct wpa_global *global;
2020 wpa_debug_open_file(params->wpa_debug_file_path);
2022 ret = eap_peer_register_methods();
2024 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2026 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2027 "the same EAP type.");
2031 global = os_zalloc(sizeof(*global));
2034 global->params.daemonize = params->daemonize;
2035 global->params.wait_for_monitor = params->wait_for_monitor;
2036 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2037 if (params->pid_file)
2038 global->params.pid_file = os_strdup(params->pid_file);
2039 if (params->ctrl_interface)
2040 global->params.ctrl_interface =
2041 os_strdup(params->ctrl_interface);
2042 wpa_debug_level = global->params.wpa_debug_level =
2043 params->wpa_debug_level;
2044 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2045 params->wpa_debug_show_keys;
2046 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2047 params->wpa_debug_timestamp;
2049 if (eloop_init(global)) {
2050 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2051 wpa_supplicant_deinit(global);
2055 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2056 if (global->ctrl_iface == NULL) {
2057 wpa_supplicant_deinit(global);
2061 if (global->params.dbus_ctrl_interface) {
2062 global->dbus_ctrl_iface =
2063 wpa_supplicant_dbus_ctrl_iface_init(global);
2064 if (global->dbus_ctrl_iface == NULL) {
2065 wpa_supplicant_deinit(global);
2070 for (i = 0; wpa_supplicant_drivers[i]; i++)
2071 global->drv_count++;
2072 if (global->drv_count == 0) {
2073 wpa_printf(MSG_ERROR, "No drivers enabled");
2074 wpa_supplicant_deinit(global);
2077 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2078 if (global->drv_priv == NULL) {
2079 wpa_supplicant_deinit(global);
2082 for (i = 0; wpa_supplicant_drivers[i]; i++) {
2083 if (!wpa_supplicant_drivers[i]->global_init)
2085 global->drv_priv[i] = wpa_supplicant_drivers[i]->global_init();
2086 if (global->drv_priv[i] == NULL) {
2087 wpa_printf(MSG_ERROR, "Failed to initialize driver "
2088 "'%s'", wpa_supplicant_drivers[i]->name);
2089 wpa_supplicant_deinit(global);
2099 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2100 * @global: Pointer to global data from wpa_supplicant_init()
2101 * Returns: 0 after successful event loop run, -1 on failure
2103 * This function starts the main event loop and continues running as long as
2104 * there are any remaining events. In most cases, this function is running as
2105 * long as the %wpa_supplicant process in still in use.
2107 int wpa_supplicant_run(struct wpa_global *global)
2109 struct wpa_supplicant *wpa_s;
2111 if (global->params.daemonize &&
2112 wpa_supplicant_daemon(global->params.pid_file))
2115 if (global->params.wait_for_monitor) {
2116 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2117 if (wpa_s->ctrl_iface)
2118 wpa_supplicant_ctrl_iface_wait(
2122 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2123 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2132 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2133 * @global: Pointer to global data from wpa_supplicant_init()
2135 * This function is called to deinitialize %wpa_supplicant and to free all
2136 * allocated resources. Remaining network interfaces will also be removed.
2138 void wpa_supplicant_deinit(struct wpa_global *global)
2145 while (global->ifaces)
2146 wpa_supplicant_remove_iface(global, global->ifaces);
2148 if (global->ctrl_iface)
2149 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2150 if (global->dbus_ctrl_iface)
2151 wpa_supplicant_dbus_ctrl_iface_deinit(global->dbus_ctrl_iface);
2153 eap_peer_unregister_methods();
2155 for (i = 0; wpa_supplicant_drivers[i]; i++) {
2156 if (!global->drv_priv[i])
2158 wpa_supplicant_drivers[i]->global_deinit(global->drv_priv[i]);
2160 os_free(global->drv_priv);
2164 if (global->params.pid_file) {
2165 os_daemonize_terminate(global->params.pid_file);
2166 os_free(global->params.pid_file);
2168 os_free(global->params.ctrl_interface);
2171 wpa_debug_close_file();