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WPS: Moved WPS IE building for ProbeReq/AssocReq into wps.c
[thirdparty/hostap.git] / wpa_supplicant / wpa_supplicant.c
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6fc6879b
JM		 1/*
2 * WPA Supplicant
3 * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
4 *
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.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 *
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.
17 */
18
19#include "includes.h"
20
21#include "common.h"
22#include "eapol_supp/eapol_supp_sm.h"
23#include "eap_peer/eap.h"
24#include "wpa.h"
25#include "eloop.h"
26#include "drivers/driver.h"
27#include "config.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"
33#include "version.h"
34#include "preauth.h"
35#include "pmksa_cache.h"
36#include "wpa_ctrl.h"
37#include "mlme.h"
38#include "ieee802_11_defs.h"
39#include "blacklist.h"
40#include "wpas_glue.h"
ad08c363 41#include "wps/wps.h"
116654ce 42#include "wps_supplicant.h"
6fc6879b
JM		 43
44const char *wpa_supplicant_version =
45"wpa_supplicant v" VERSION_STR "\n"
46"Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> and contributors";
47
48const 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"
51"\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 */
58;
59
60#ifndef CONFIG_NO_STDOUT_DEBUG
61/* Long text divided into parts in order to fit in C89 strings size limits. */
62const 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"
66"\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"
71"\n";
72const 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"
76"\n"
77"Alternatively, this software may be distributed under the terms of the\n"
78"BSD license.\n"
79"\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"
82"met:\n"
83"\n";
84const 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"
87"\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"
91"\n";
92const 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"
96"\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";
101const 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"
109"\n";
110#endif /* CONFIG_NO_STDOUT_DEBUG */
111
112extern struct wpa_driver_ops *wpa_supplicant_drivers[];
113
114extern int wpa_debug_level;
115extern int wpa_debug_show_keys;
116extern int wpa_debug_timestamp;
117
118/* Configure default/group WEP keys for static WEP */
119static int wpa_set_wep_keys(struct wpa_supplicant *wpa_s,
120 struct wpa_ssid *ssid)
121{
122 int i, set = 0;
123
124 for (i = 0; i < NUM_WEP_KEYS; i++) {
125 if (ssid->wep_key_len[i] == 0)
126 continue;
127
128 set = 1;
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]);
133 }
134
135 return set;
136}
137
138
139static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
140 struct wpa_ssid *ssid)
141{
142 u8 key[32];
143 size_t keylen;
144 wpa_alg alg;
145 u8 seq[6] = { 0 };
146
147 /* IBSS/WPA-None uses only one key (Group) for both receiving and
148 * sending unicast and multicast packets. */
149
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);
153 return -1;
154 }
155
156 if (!ssid->psk_set) {
157 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
158 return -1;
159 }
160
161 switch (wpa_s->group_cipher) {
162 case WPA_CIPHER_CCMP:
163 os_memcpy(key, ssid->psk, 16);
164 keylen = 16;
165 alg = WPA_ALG_CCMP;
166 break;
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);
171 keylen = 32;
172 alg = WPA_ALG_TKIP;
173 break;
174 default:
175 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
176 "WPA-None", wpa_s->group_cipher);
177 return -1;
178 }
179
180 /* TODO: should actually remember the previously used seq#, both for TX
181 * and RX from each STA.. */
182
183 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
184 0, 1, seq, 6, key, keylen);
185}
186
187
188static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
189{
190 struct wpa_supplicant *wpa_s = eloop_ctx;
191 const u8 *bssid = wpa_s->bssid;
a8e16edc 192 if (is_zero_ether_addr(bssid))
6fc6879b
JM		 193 bssid = wpa_s->pending_bssid;
194 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
195 MAC2STR(bssid));
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);
201}
202
203
204/**
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
209 *
210 * This function is used to schedule a timeout for the current authentication
211 * attempt.
212 */
213void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
214 int sec, int usec)
215{
216 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
e519314e 217 wpa_s->driver && IS_WIRED(wpa_s->driver))
6fc6879b
JM		 218 return;
219
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);
224}
225
226
227/**
228 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
229 * @wpa_s: Pointer to wpa_supplicant data
230 *
231 * This function is used to cancel authentication timeout scheduled with
232 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
233 * been completed.
234 */
235void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
236{
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);
240}
241
242
243/**
244 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
245 * @wpa_s: Pointer to wpa_supplicant data
246 *
247 * This function is used to configure EAPOL state machine based on the selected
248 * authentication mode.
249 */
250void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
251{
252#ifdef IEEE8021X_EAPOL
253 struct eapol_config eapol_conf;
254 struct wpa_ssid *ssid = wpa_s->current_ssid;
255
56586197 256 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
6fc6879b
JM		 257 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
258 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
259 }
260 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
261 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
262 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
263 else
264 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
265
266 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
267 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
268 eapol_conf.accept_802_1x_keys = 1;
269 eapol_conf.required_keys = 0;
270 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
271 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
272 }
273 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
274 eapol_conf.required_keys |=
275 EAPOL_REQUIRE_KEY_BROADCAST;
276 }
277
e519314e 278 if (wpa_s->conf && wpa_s->driver && IS_WIRED(wpa_s->driver)) {
6fc6879b
JM		 279 eapol_conf.required_keys = 0;
280 }
281 }
282 if (wpa_s->conf)
283 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
284 eapol_conf.workaround = ssid->eap_workaround;
56586197
JM		 285 eapol_conf.eap_disabled =
286 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
ad08c363
JM		 287 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
288 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
6fc6879b
JM		 289 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
290#endif /* IEEE8021X_EAPOL */
291}
292
293
294/**
295 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
296 * @wpa_s: Pointer to wpa_supplicant data
297 * @ssid: Configuration data for the network
298 *
299 * This function is used to configure WPA state machine and related parameters
300 * to a mode where WPA is not enabled. This is called as part of the
301 * authentication configuration when the selected network does not use WPA.
302 */
303void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
304 struct wpa_ssid *ssid)
305{
306 int i;
307
ad08c363
JM		 308 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
309 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
310 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
6fc6879b
JM		 311 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
312 else
313 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
314 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
315 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
316 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
317 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
318 wpa_s->group_cipher = WPA_CIPHER_NONE;
319 wpa_s->mgmt_group_cipher = 0;
320
321 for (i = 0; i < NUM_WEP_KEYS; i++) {
322 if (ssid->wep_key_len[i] > 5) {
323 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
324 wpa_s->group_cipher = WPA_CIPHER_WEP104;
325 break;
326 } else if (ssid->wep_key_len[i] > 0) {
327 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
328 wpa_s->group_cipher = WPA_CIPHER_WEP40;
329 break;
330 }
331 }
332
333 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
334 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
335 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
336 wpa_s->pairwise_cipher);
337 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
338#ifdef CONFIG_IEEE80211W
339 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
340 wpa_s->mgmt_group_cipher);
341#endif /* CONFIG_IEEE80211W */
342
343 pmksa_cache_clear_current(wpa_s->wpa);
344}
345
346
347static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
348{
349 scard_deinit(wpa_s->scard);
350 wpa_s->scard = NULL;
351 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
352 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
353 l2_packet_deinit(wpa_s->l2);
354 wpa_s->l2 = NULL;
355 if (wpa_s->l2_br) {
356 l2_packet_deinit(wpa_s->l2_br);
357 wpa_s->l2_br = NULL;
358 }
359
360 if (wpa_s->ctrl_iface) {
361 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
362 wpa_s->ctrl_iface = NULL;
363 }
364 if (wpa_s->conf != NULL) {
365 wpa_config_free(wpa_s->conf);
366 wpa_s->conf = NULL;
367 }
368
369 os_free(wpa_s->confname);
370 wpa_s->confname = NULL;
371
372 wpa_sm_set_eapol(wpa_s->wpa, NULL);
373 eapol_sm_deinit(wpa_s->eapol);
374 wpa_s->eapol = NULL;
375
376 rsn_preauth_deinit(wpa_s->wpa);
377
378 pmksa_candidate_free(wpa_s->wpa);
379 wpa_sm_deinit(wpa_s->wpa);
380 wpa_s->wpa = NULL;
381 wpa_blacklist_clear(wpa_s);
382
383 wpa_scan_results_free(wpa_s->scan_res);
384 wpa_s->scan_res = NULL;
385
386 wpa_supplicant_cancel_scan(wpa_s);
387 wpa_supplicant_cancel_auth_timeout(wpa_s);
388
389 ieee80211_sta_deinit(wpa_s);
116654ce
JM		 390
391 wpas_wps_deinit(wpa_s);
6fc6879b
JM		 392}
393
394
395/**
396 * wpa_clear_keys - Clear keys configured for the driver
397 * @wpa_s: Pointer to wpa_supplicant data
398 * @addr: Previously used BSSID or %NULL if not available
399 *
400 * This function clears the encryption keys that has been previously configured
401 * for the driver.
402 */
403void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
404{
405 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
406
407 if (wpa_s->keys_cleared) {
408 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
409 * timing issues with keys being cleared just before new keys
410 * are set or just after association or something similar. This
411 * shows up in group key handshake failing often because of the
412 * client not receiving the first encrypted packets correctly.
413 * Skipping some of the extra key clearing steps seems to help
414 * in completing group key handshake more reliably. */
415 wpa_printf(MSG_DEBUG, "No keys have been configured - "
416 "skip key clearing");
417 return;
418 }
419
420 /* MLME-DELETEKEYS.request */
421 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
422 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
423 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
424 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
425 if (addr) {
426 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
427 0);
428 /* MLME-SETPROTECTION.request(None) */
429 wpa_drv_mlme_setprotection(
430 wpa_s, addr,
431 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
432 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
433 }
434 wpa_s->keys_cleared = 1;
435}
436
437
438/**
439 * wpa_supplicant_state_txt - Get the connection state name as a text string
440 * @state: State (wpa_state; WPA_*)
441 * Returns: The state name as a printable text string
442 */
443const char * wpa_supplicant_state_txt(int state)
444{
445 switch (state) {
446 case WPA_DISCONNECTED:
447 return "DISCONNECTED";
448 case WPA_INACTIVE:
449 return "INACTIVE";
450 case WPA_SCANNING:
451 return "SCANNING";
452 case WPA_ASSOCIATING:
453 return "ASSOCIATING";
454 case WPA_ASSOCIATED:
455 return "ASSOCIATED";
456 case WPA_4WAY_HANDSHAKE:
457 return "4WAY_HANDSHAKE";
458 case WPA_GROUP_HANDSHAKE:
459 return "GROUP_HANDSHAKE";
460 case WPA_COMPLETED:
461 return "COMPLETED";
462 default:
463 return "UNKNOWN";
464 }
465}
466
467
468/**
469 * wpa_supplicant_set_state - Set current connection state
470 * @wpa_s: Pointer to wpa_supplicant data
471 * @state: The new connection state
472 *
473 * This function is called whenever the connection state changes, e.g.,
474 * association is completed for WPA/WPA2 4-Way Handshake is started.
475 */
476void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
477{
478 wpa_printf(MSG_DEBUG, "State: %s -> %s",
479 wpa_supplicant_state_txt(wpa_s->wpa_state),
480 wpa_supplicant_state_txt(state));
481
482 wpa_supplicant_dbus_notify_state_change(wpa_s, state,
483 wpa_s->wpa_state);
484
485 if (state == WPA_COMPLETED && wpa_s->new_connection) {
486#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
487 struct wpa_ssid *ssid = wpa_s->current_ssid;
488 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
489 MACSTR " completed %s [id=%d id_str=%s]",
490 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
491 "(reauth)" : "(auth)",
492 ssid ? ssid->id : -1,
493 ssid && ssid->id_str ? ssid->id_str : "");
494#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
495 wpa_s->new_connection = 0;
496 wpa_s->reassociated_connection = 1;
497 wpa_drv_set_operstate(wpa_s, 1);
498 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
499 state == WPA_ASSOCIATED) {
500 wpa_s->new_connection = 1;
501 wpa_drv_set_operstate(wpa_s, 0);
502 }
503 wpa_s->wpa_state = state;
504}
505
506
507static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
508 void *signal_ctx)
509{
510 struct wpa_global *global = eloop_ctx;
511 struct wpa_supplicant *wpa_s;
512 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
513 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
514 "received", sig);
515 }
516 eloop_terminate();
517}
518
519
520static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
521{
522 wpa_s->pairwise_cipher = 0;
523 wpa_s->group_cipher = 0;
524 wpa_s->mgmt_group_cipher = 0;
525 wpa_s->key_mgmt = 0;
526 wpa_s->wpa_state = WPA_DISCONNECTED;
527}
528
529
530/**
531 * wpa_supplicant_reload_configuration - Reload configuration data
532 * @wpa_s: Pointer to wpa_supplicant data
533 * Returns: 0 on success or -1 if configuration parsing failed
534 *
535 * This function can be used to request that the configuration data is reloaded
536 * (e.g., after configuration file change). This function is reloading
537 * configuration only for one interface, so this may need to be called multiple
538 * times if %wpa_supplicant is controlling multiple interfaces and all
539 * interfaces need reconfiguration.
540 */
541int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
542{
543 struct wpa_config *conf;
544 int reconf_ctrl;
545 if (wpa_s->confname == NULL)
546 return -1;
547 conf = wpa_config_read(wpa_s->confname);
548 if (conf == NULL) {
549 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
550 "file '%s' - exiting", wpa_s->confname);
551 return -1;
552 }
553
554 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
555 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
556 os_strcmp(conf->ctrl_interface,
557 wpa_s->conf->ctrl_interface) != 0);
558
559 if (reconf_ctrl && wpa_s->ctrl_iface) {
560 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
561 wpa_s->ctrl_iface = NULL;
562 }
563
564 eapol_sm_invalidate_cached_session(wpa_s->eapol);
565 wpa_s->current_ssid = NULL;
566 /*
567 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
568 * pkcs11_engine_path, pkcs11_module_path.
569 */
56586197 570 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
6fc6879b
JM		 571 /*
572 * Clear forced success to clear EAP state for next
573 * authentication.
574 */
575 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
576 }
577 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
578 wpa_sm_set_config(wpa_s->wpa, NULL);
579 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
580 rsn_preauth_deinit(wpa_s->wpa);
581 wpa_config_free(wpa_s->conf);
582 wpa_s->conf = conf;
583 if (reconf_ctrl)
584 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
585
586 wpa_supplicant_clear_status(wpa_s);
587 wpa_s->reassociate = 1;
588 wpa_supplicant_req_scan(wpa_s, 0, 0);
589 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
590 return 0;
591}
592
593
594static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
595 void *signal_ctx)
596{
597 struct wpa_global *global = eloop_ctx;
598 struct wpa_supplicant *wpa_s;
599 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
600 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
601 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
602 eloop_terminate();
603 }
604 }
605}
606
607
608static wpa_cipher cipher_suite2driver(int cipher)
609{
610 switch (cipher) {
611 case WPA_CIPHER_NONE:
612 return CIPHER_NONE;
613 case WPA_CIPHER_WEP40:
614 return CIPHER_WEP40;
615 case WPA_CIPHER_WEP104:
616 return CIPHER_WEP104;
617 case WPA_CIPHER_CCMP:
618 return CIPHER_CCMP;
619 case WPA_CIPHER_TKIP:
620 default:
621 return CIPHER_TKIP;
622 }
623}
624
625
626static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
627{
628 switch (key_mgmt) {
629 case WPA_KEY_MGMT_NONE:
630 return KEY_MGMT_NONE;
631 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
632 return KEY_MGMT_802_1X_NO_WPA;
633 case WPA_KEY_MGMT_IEEE8021X:
634 return KEY_MGMT_802_1X;
635 case WPA_KEY_MGMT_WPA_NONE:
636 return KEY_MGMT_WPA_NONE;
637 case WPA_KEY_MGMT_FT_IEEE8021X:
638 return KEY_MGMT_FT_802_1X;
639 case WPA_KEY_MGMT_FT_PSK:
640 return KEY_MGMT_FT_PSK;
56586197
JM		 641 case WPA_KEY_MGMT_IEEE8021X_SHA256:
642 return KEY_MGMT_802_1X_SHA256;
643 case WPA_KEY_MGMT_PSK_SHA256:
644 return KEY_MGMT_PSK_SHA256;
ad08c363
JM		 645 case WPA_KEY_MGMT_WPS:
646 return KEY_MGMT_WPS;
6fc6879b
JM		 647 case WPA_KEY_MGMT_PSK:
648 default:
649 return KEY_MGMT_PSK;
650 }
651}
652
653
654static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
655 struct wpa_ssid *ssid,
656 struct wpa_ie_data *ie)
657{
658 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
659 if (ret) {
660 if (ret == -2) {
661 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
662 "from association info");
663 }
664 return -1;
665 }
666
667 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
668 "suites");
669 if (!(ie->group_cipher & ssid->group_cipher)) {
670 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
671 "cipher 0x%x (mask 0x%x) - reject",
672 ie->group_cipher, ssid->group_cipher);
673 return -1;
674 }
675 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
676 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
677 "cipher 0x%x (mask 0x%x) - reject",
678 ie->pairwise_cipher, ssid->pairwise_cipher);
679 return -1;
680 }
681 if (!(ie->key_mgmt & ssid->key_mgmt)) {
682 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
683 "management 0x%x (mask 0x%x) - reject",
684 ie->key_mgmt, ssid->key_mgmt);
685 return -1;
686 }
687
688#ifdef CONFIG_IEEE80211W
0b60b0aa 689 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
6fc6879b
JM		 690 ssid->ieee80211w == IEEE80211W_REQUIRED) {
691 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
692 "that does not support management frame protection - "
693 "reject");
694 return -1;
695 }
696#endif /* CONFIG_IEEE80211W */
697
698 return 0;
699}
700
701
702/**
703 * wpa_supplicant_set_suites - Set authentication and encryption parameters
704 * @wpa_s: Pointer to wpa_supplicant data
705 * @bss: Scan results for the selected BSS, or %NULL if not available
706 * @ssid: Configuration data for the selected network
707 * @wpa_ie: Buffer for the WPA/RSN IE
708 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
709 * used buffer length in case the functions returns success.
710 * Returns: 0 on success or -1 on failure
711 *
712 * This function is used to configure authentication and encryption parameters
713 * based on the network configuration and scan result for the selected BSS (if
714 * available).
715 */
716int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
717 struct wpa_scan_res *bss,
718 struct wpa_ssid *ssid,
719 u8 *wpa_ie, size_t *wpa_ie_len)
720{
721 struct wpa_ie_data ie;
722 int sel, proto;
723 const u8 *bss_wpa, *bss_rsn;
724
725 if (bss) {
726 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
727 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
728 } else
729 bss_wpa = bss_rsn = NULL;
730
731 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
732 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
733 (ie.group_cipher & ssid->group_cipher) &&
734 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
735 (ie.key_mgmt & ssid->key_mgmt)) {
736 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
737 proto = WPA_PROTO_RSN;
738 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
739 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
740 (ie.group_cipher & ssid->group_cipher) &&
741 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
742 (ie.key_mgmt & ssid->key_mgmt)) {
743 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
744 proto = WPA_PROTO_WPA;
745 } else if (bss) {
746 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
747 return -1;
748 } else {
749 if (ssid->proto & WPA_PROTO_RSN)
750 proto = WPA_PROTO_RSN;
751 else
752 proto = WPA_PROTO_WPA;
753 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
754 os_memset(&ie, 0, sizeof(ie));
755 ie.group_cipher = ssid->group_cipher;
756 ie.pairwise_cipher = ssid->pairwise_cipher;
757 ie.key_mgmt = ssid->key_mgmt;
758#ifdef CONFIG_IEEE80211W
759 ie.mgmt_group_cipher =
760 ssid->ieee80211w != NO_IEEE80211W ?
761 WPA_CIPHER_AES_128_CMAC : 0;
762#endif /* CONFIG_IEEE80211W */
763 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
764 "on configuration");
765 } else
766 proto = ie.proto;
767 }
768
769 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
770 "pairwise %d key_mgmt %d proto %d",
771 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
772#ifdef CONFIG_IEEE80211W
773 if (ssid->ieee80211w) {
774 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
775 ie.mgmt_group_cipher);
776 }
777#endif /* CONFIG_IEEE80211W */
778
779 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
780 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
781 !!(ssid->proto & WPA_PROTO_RSN));
782
783 if (bss || !wpa_s->ap_ies_from_associnfo) {
784 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
785 bss_wpa ? 2 + bss_wpa[1] : 0) ||
786 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
787 bss_rsn ? 2 + bss_rsn[1] : 0))
788 return -1;
789 }
790
791 sel = ie.group_cipher & ssid->group_cipher;
792 if (sel & WPA_CIPHER_CCMP) {
793 wpa_s->group_cipher = WPA_CIPHER_CCMP;
794 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
795 } else if (sel & WPA_CIPHER_TKIP) {
796 wpa_s->group_cipher = WPA_CIPHER_TKIP;
797 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
798 } else if (sel & WPA_CIPHER_WEP104) {
799 wpa_s->group_cipher = WPA_CIPHER_WEP104;
800 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
801 } else if (sel & WPA_CIPHER_WEP40) {
802 wpa_s->group_cipher = WPA_CIPHER_WEP40;
803 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
804 } else {
805 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
806 return -1;
807 }
808
809 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
810 if (sel & WPA_CIPHER_CCMP) {
811 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
812 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
813 } else if (sel & WPA_CIPHER_TKIP) {
814 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
815 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
816 } else if (sel & WPA_CIPHER_NONE) {
817 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
818 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
819 } else {
820 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
821 "cipher.");
822 return -1;
823 }
824
825 sel = ie.key_mgmt & ssid->key_mgmt;
826 if (0) {
827#ifdef CONFIG_IEEE80211R
828 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
829 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
830 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
831 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
832 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
833 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
834#endif /* CONFIG_IEEE80211R */
56586197
JM		 835#ifdef CONFIG_IEEE80211W
836 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
837 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
838 wpa_msg(wpa_s, MSG_DEBUG,
839 "WPA: using KEY_MGMT 802.1X with SHA256");
840 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
841 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
842 wpa_msg(wpa_s, MSG_DEBUG,
843 "WPA: using KEY_MGMT PSK with SHA256");
844#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 845 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
846 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
847 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
848 } else if (sel & WPA_KEY_MGMT_PSK) {
849 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
850 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
851 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
852 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
853 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
854 } else {
855 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
856 "key management type.");
857 return -1;
858 }
859
860 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
861 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
862 wpa_s->pairwise_cipher);
863 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
864
865#ifdef CONFIG_IEEE80211W
866 sel = ie.mgmt_group_cipher;
867 if (ssid->ieee80211w == NO_IEEE80211W ||
0b60b0aa 868 !(ie.capabilities & WPA_CAPABILITY_MFPC))
6fc6879b
JM		 869 sel = 0;
870 if (sel & WPA_CIPHER_AES_128_CMAC) {
871 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
872 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
873 "AES-128-CMAC");
874 } else {
875 wpa_s->mgmt_group_cipher = 0;
876 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
877 }
878 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
879 wpa_s->mgmt_group_cipher);
880#endif /* CONFIG_IEEE80211W */
881
882 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
883 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
884 return -1;
885 }
886
56586197
JM		 887 if (ssid->key_mgmt &
888 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
6fc6879b
JM		 889 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
890 else
891 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
892
893 return 0;
894}
895
896
897/**
898 * wpa_supplicant_associate - Request association
899 * @wpa_s: Pointer to wpa_supplicant data
900 * @bss: Scan results for the selected BSS, or %NULL if not available
901 * @ssid: Configuration data for the selected network
902 *
903 * This function is used to request %wpa_supplicant to associate with a BSS.
904 */
905void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
906 struct wpa_scan_res *bss, struct wpa_ssid *ssid)
907{
908 u8 wpa_ie[80];
909 size_t wpa_ie_len;
910 int use_crypt, ret, i;
911 int algs = AUTH_ALG_OPEN_SYSTEM;
912 wpa_cipher cipher_pairwise, cipher_group;
913 struct wpa_driver_associate_params params;
914 int wep_keys_set = 0;
915 struct wpa_driver_capa capa;
916 int assoc_failed = 0;
917
918 wpa_s->reassociate = 0;
919 if (bss) {
920#ifdef CONFIG_IEEE80211R
921 const u8 *md = NULL;
922#endif /* CONFIG_IEEE80211R */
923 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
924 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
925 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
926 ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
927 os_memset(wpa_s->bssid, 0, ETH_ALEN);
928 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
929#ifdef CONFIG_IEEE80211R
930 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
931 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
932 md = ie + 2;
933 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
91a05482
JM		 934 if (md) {
935 /* Prepare for the next transition */
936 wpa_ft_prepare_auth_request(wpa_s->wpa);
937 }
6fc6879b
JM		 938#endif /* CONFIG_IEEE80211R */
939 } else {
940 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
941 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
942 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
943 }
944 wpa_supplicant_cancel_scan(wpa_s);
945
946 /* Starting new association, so clear the possibly used WPA IE from the
947 * previous association. */
948 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
949
ec5f180a
DW		 950 if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
951 wpa_printf(MSG_WARNING, "Failed to set operating mode");
952 assoc_failed = 1;
953 }
954
6fc6879b
JM		 955#ifdef IEEE8021X_EAPOL
956 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
957 if (ssid->leap) {
958 if (ssid->non_leap == 0)
959 algs = AUTH_ALG_LEAP;
960 else
961 algs |= AUTH_ALG_LEAP;
962 }
963 }
964#endif /* IEEE8021X_EAPOL */
965 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
966 if (ssid->auth_alg) {
967 algs = 0;
968 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
969 algs |= AUTH_ALG_OPEN_SYSTEM;
970 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
971 algs |= AUTH_ALG_SHARED_KEY;
972 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
973 algs |= AUTH_ALG_LEAP;
974 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
975 algs);
976 }
977 wpa_drv_set_auth_alg(wpa_s, algs);
978
979 if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
980 wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
981 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
982 WPA_KEY_MGMT_FT_IEEE8021X |
56586197
JM		 983 WPA_KEY_MGMT_FT_PSK |
984 WPA_KEY_MGMT_IEEE8021X_SHA256 |
985 WPA_KEY_MGMT_PSK_SHA256))) {
6fc6879b
JM		 986 int try_opportunistic;
987 try_opportunistic = ssid->proactive_key_caching &&
988 (ssid->proto & WPA_PROTO_RSN);
989 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
990 wpa_s->current_ssid,
991 try_opportunistic) == 0)
992 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
993 wpa_ie_len = sizeof(wpa_ie);
994 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
995 wpa_ie, &wpa_ie_len)) {
996 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
997 "management and encryption suites");
998 return;
999 }
1000 } else if (ssid->key_mgmt &
1001 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1002 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
56586197
JM		 1003 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1004 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
6fc6879b
JM		 1005 wpa_ie_len = sizeof(wpa_ie);
1006 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1007 wpa_ie, &wpa_ie_len)) {
1008 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1009 "management and encryption suites (no scan "
1010 "results)");
1011 return;
1012 }
ad08c363
JM		 1013#ifdef CONFIG_WPS
1014 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
c0d041d9 1015 struct wpabuf *wps_ie = wps_build_assoc_req_ie();
ad08c363
JM		 1016 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1017 wpa_ie_len = wpabuf_len(wps_ie);
1018 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1019 }
1020 wpabuf_free(wps_ie);
1021 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1022#endif /* CONFIG_WPS */
6fc6879b
JM		 1023 } else {
1024 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1025 wpa_ie_len = 0;
1026 }
1027
1028 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1029 use_crypt = 1;
1030 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1031 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1032 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1033 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1034 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1035 use_crypt = 0;
1036 if (wpa_set_wep_keys(wpa_s, ssid)) {
1037 use_crypt = 1;
1038 wep_keys_set = 1;
1039 }
1040 }
ad08c363
JM		 1041 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1042 use_crypt = 0;
6fc6879b
JM		 1043
1044#ifdef IEEE8021X_EAPOL
1045 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1046 if ((ssid->eapol_flags &
1047 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1048 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1049 !wep_keys_set) {
1050 use_crypt = 0;
1051 } else {
1052 /* Assume that dynamic WEP-104 keys will be used and
1053 * set cipher suites in order for drivers to expect
1054 * encryption. */
1055 cipher_pairwise = cipher_group = CIPHER_WEP104;
1056 }
1057 }
1058#endif /* IEEE8021X_EAPOL */
1059
1060 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1061 /* Set the key before (and later after) association */
1062 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1063 }
1064
1065 wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1066 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1067 os_memset(&params, 0, sizeof(params));
1068 if (bss) {
1069 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1070 params.bssid = bss->bssid;
1071 params.ssid = ie ? ie + 2 : (u8 *) "";
1072 params.ssid_len = ie ? ie[1] : 0;
1073 params.freq = bss->freq;
1074 } else {
1075 params.ssid = ssid->ssid;
1076 params.ssid_len = ssid->ssid_len;
1077 }
1078 if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1079 params.freq = ssid->frequency; /* Initial channel for IBSS */
1080 params.wpa_ie = wpa_ie;
1081 params.wpa_ie_len = wpa_ie_len;
1082 params.pairwise_suite = cipher_pairwise;
1083 params.group_suite = cipher_group;
1084 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1085 params.auth_alg = algs;
1086 params.mode = ssid->mode;
1087 for (i = 0; i < NUM_WEP_KEYS; i++) {
1088 if (ssid->wep_key_len[i])
1089 params.wep_key[i] = ssid->wep_key[i];
1090 params.wep_key_len[i] = ssid->wep_key_len[i];
1091 }
1092 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1093
1094 if (wpa_s->driver_4way_handshake &&
1095 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1096 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1097 params.passphrase = ssid->passphrase;
1098 if (ssid->psk_set)
1099 params.psk = ssid->psk;
1100 }
1101
1102#ifdef CONFIG_IEEE80211W
1103 switch (ssid->ieee80211w) {
1104 case NO_IEEE80211W:
1105 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1106 break;
1107 case IEEE80211W_OPTIONAL:
1108 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1109 break;
1110 case IEEE80211W_REQUIRED:
1111 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1112 break;
1113 }
1114#endif /* CONFIG_IEEE80211W */
1115
1116 if (wpa_s->use_client_mlme)
1117 ret = ieee80211_sta_associate(wpa_s, &params);
1118 else
1119 ret = wpa_drv_associate(wpa_s, &params);
1120 if (ret < 0) {
1121 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1122 "failed");
1123 /* try to continue anyway; new association will be tried again
1124 * after timeout */
1125 assoc_failed = 1;
1126 }
1127
1128 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1129 /* Set the key after the association just in case association
1130 * cleared the previously configured key. */
1131 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1132 /* No need to timeout authentication since there is no key
1133 * management. */
1134 wpa_supplicant_cancel_auth_timeout(wpa_s);
1135 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1136 } else {
1137 /* Timeout for IEEE 802.11 authentication and association */
1d3c75b3
DW		 1138 int timeout = 60;
1139
1140 if (assoc_failed) {
1141 /* give IBSS a bit more time */
1142 timeout = ssid->mode ? 10 : 5;
1143 } else if (wpa_s->conf->ap_scan == 1) {
1144 /* give IBSS a bit more time */
1145 timeout = ssid->mode ? 20 : 10;
1146 }
6fc6879b
JM		 1147 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1148 }
1149
1150 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1151 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1152 /* Set static WEP keys again */
1153 wpa_set_wep_keys(wpa_s, ssid);
1154 }
1155
1156 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1157 /*
1158 * Do not allow EAP session resumption between different
1159 * network configurations.
1160 */
1161 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1162 }
1163 wpa_s->current_ssid = ssid;
1164 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1165 wpa_supplicant_initiate_eapol(wpa_s);
1166}
1167
1168
1169/**
1170 * wpa_supplicant_disassociate - Disassociate the current connection
1171 * @wpa_s: Pointer to wpa_supplicant data
1172 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1173 *
1174 * This function is used to request %wpa_supplicant to disassociate with the
1175 * current AP.
1176 */
1177void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1178 int reason_code)
1179{
1180 u8 *addr = NULL;
a8e16edc 1181 if (!is_zero_ether_addr(wpa_s->bssid)) {
6fc6879b
JM		 1182 if (wpa_s->use_client_mlme)
1183 ieee80211_sta_disassociate(wpa_s, reason_code);
1184 else
1185 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1186 addr = wpa_s->bssid;
1187 }
1188 wpa_clear_keys(wpa_s, addr);
1189 wpa_supplicant_mark_disassoc(wpa_s);
1190 wpa_s->current_ssid = NULL;
1191 wpa_sm_set_config(wpa_s->wpa, NULL);
1192 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1193}
1194
1195
1196/**
1197 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1198 * @wpa_s: Pointer to wpa_supplicant data
1199 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1200 *
1201 * This function is used to request %wpa_supplicant to disassociate with the
1202 * current AP.
1203 */
1204void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1205 int reason_code)
1206{
1207 u8 *addr = NULL;
1208 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
a8e16edc 1209 if (!is_zero_ether_addr(wpa_s->bssid)) {
6fc6879b
JM		 1210 if (wpa_s->use_client_mlme)
1211 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1212 else
1213 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1214 reason_code);
1215 addr = wpa_s->bssid;
1216 }
1217 wpa_clear_keys(wpa_s, addr);
1218 wpa_s->current_ssid = NULL;
1219 wpa_sm_set_config(wpa_s->wpa, NULL);
1220 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1221 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1222 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1223}
1224
1225
1226static int wpa_supplicant_get_scan_results_old(struct wpa_supplicant *wpa_s)
1227{
1228#define SCAN_AP_LIMIT 128
1229 struct wpa_scan_result *results;
1230 int num, i;
1231 struct wpa_scan_results *res;
1232
1233 results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1234 if (results == NULL) {
1235 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1236 "results");
1237 return -1;
1238 }
1239
1240 num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1241 wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1242 if (num < 0) {
1243 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1244 os_free(results);
1245 return -1;
1246 }
1247 if (num > SCAN_AP_LIMIT) {
1248 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1249 num, SCAN_AP_LIMIT);
1250 num = SCAN_AP_LIMIT;
1251 }
1252
1253 wpa_scan_results_free(wpa_s->scan_res);
1254 wpa_s->scan_res = NULL;
1255
1256 /* Convert old scan result data structure to the new one */
1257 res = os_zalloc(sizeof(*res));
1258 if (res == NULL) {
1259 os_free(results);
1260 return -1;
1261 }
1262 res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1263 if (res->res == NULL) {
1264 os_free(results);
1265 os_free(res);
1266 return -1;
1267 }
1268
1269 for (i = 0; i < num; i++) {
1270 struct wpa_scan_result *bss = &results[i];
1271 struct wpa_scan_res *r;
1272 size_t ie_len;
1273 u8 *pos;
1274
1275 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1276 if (bss->maxrate)
1277 ie_len += 3;
1278 if (bss->mdie_present)
1279 ie_len += 5;
1280
1281 r = os_zalloc(sizeof(*r) + ie_len);
1282 if (r == NULL)
1283 break;
1284
1285 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1286 r->freq = bss->freq;
1287 r->caps = bss->caps;
1288 r->qual = bss->qual;
1289 r->noise = bss->noise;
1290 r->level = bss->level;
1291 r->tsf = bss->tsf;
1292 r->ie_len = ie_len;
1293
1294 pos = (u8 *) (r + 1);
1295
1296 /* SSID IE */
1297 *pos++ = WLAN_EID_SSID;
1298 *pos++ = bss->ssid_len;
1299 os_memcpy(pos, bss->ssid, bss->ssid_len);
1300 pos += bss->ssid_len;
1301
1302 if (bss->maxrate) {
1303 /* Fake Supported Rate IE to include max rate */
1304 *pos++ = WLAN_EID_SUPP_RATES;
1305 *pos++ = 1;
1306 *pos++ = bss->maxrate;
1307 }
1308
1309 if (bss->rsn_ie_len) {
1310 os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1311 pos += bss->rsn_ie_len;
1312 }
1313
1314 if (bss->mdie_present) {
1315 os_memcpy(pos, bss->mdie, 5);
1316 pos += 5;
1317 }
1318
1319 if (bss->wpa_ie_len) {
1320 os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1321 pos += bss->wpa_ie_len;
1322 }
1323
1324 res->res[res->num++] = r;
1325 }
1326
1327 os_free(results);
1328 wpa_s->scan_res = res;
1329
1330 return 0;
1331}
1332
1333
1334/**
1335 * wpa_supplicant_get_scan_results - Get scan results
1336 * @wpa_s: Pointer to wpa_supplicant data
1337 * Returns: 0 on success, -1 on failure
1338 *
1339 * This function is request the current scan results from the driver and stores
1340 * a local copy of the results in wpa_s->scan_res.
1341 */
1342int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1343{
1344 int ret;
1345
1346 if (wpa_s->use_client_mlme) {
1347 wpa_scan_results_free(wpa_s->scan_res);
1348 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1349 if (wpa_s->scan_res == NULL) {
1350 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1351 ret = -1;
1352 } else
1353 ret = 0;
1354 } else if (wpa_s->driver->get_scan_results2 == NULL)
1355 ret = wpa_supplicant_get_scan_results_old(wpa_s);
1356 else {
1357 wpa_scan_results_free(wpa_s->scan_res);
1358 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1359 if (wpa_s->scan_res == NULL) {
1360 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1361 ret = -1;
1362 } else
1363 ret = 0;
1364 }
1365
1366 if (wpa_s->scan_res)
1367 wpa_scan_sort_results(wpa_s->scan_res);
1368
1369 return ret;
1370}
1371
1372
1373/**
1374 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1375 * @wpa_s: Pointer to wpa_supplicant data
1376 * Returns: A pointer to the current network structure or %NULL on failure
1377 */
1378struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1379{
1380 struct wpa_ssid *entry;
1381 u8 ssid[MAX_SSID_LEN];
1382 int res;
1383 size_t ssid_len;
1384 u8 bssid[ETH_ALEN];
1385 int wired;
1386
1387 if (wpa_s->use_client_mlme) {
1388 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1389 wpa_printf(MSG_WARNING, "Could not read SSID from "
1390 "MLME.");
1391 return NULL;
1392 }
1393 } else {
1394 res = wpa_drv_get_ssid(wpa_s, ssid);
1395 if (res < 0) {
1396 wpa_printf(MSG_WARNING, "Could not read SSID from "
1397 "driver.");
1398 return NULL;
1399 }
1400 ssid_len = res;
1401 }
1402
1403 if (wpa_s->use_client_mlme)
1404 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1405 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1406 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1407 return NULL;
1408 }
1409
1410 wired = wpa_s->conf->ap_scan == 0 && wpa_s->driver &&
e519314e 1411 IS_WIRED(wpa_s->driver);
6fc6879b
JM		 1412
1413 entry = wpa_s->conf->ssid;
1414 while (entry) {
1415 if (!entry->disabled &&
1416 ((ssid_len == entry->ssid_len &&
1417 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1418 (!entry->bssid_set ||
1419 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1420 return entry;
1421 entry = entry->next;
1422 }
1423
1424 return NULL;
1425}
1426
1427
1428static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1429 const char *name)
1430{
1431 int i;
1432
1433 if (wpa_s == NULL)
1434 return -1;
1435
1436 if (wpa_supplicant_drivers[0] == NULL) {
1437 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1438 "wpa_supplicant.");
1439 return -1;
1440 }
1441
1442 if (name == NULL) {
1443 /* default to first driver in the list */
1444 wpa_s->driver = wpa_supplicant_drivers[0];
1445 return 0;
1446 }
1447
1448 for (i = 0; wpa_supplicant_drivers[i]; i++) {
1449 if (os_strcmp(name, wpa_supplicant_drivers[i]->name) == 0) {
1450 wpa_s->driver = wpa_supplicant_drivers[i];
1451 return 0;
1452 }
1453 }
1454
1455 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.\n", name);
1456 return -1;
1457}
1458
1459
1460void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1461 const u8 *buf, size_t len)
1462{
1463 struct wpa_supplicant *wpa_s = ctx;
1464
1465 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1466 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1467
1468 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1469 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1470 "no key management is configured");
1471 return;
1472 }
1473
1474 if (wpa_s->eapol_received == 0 &&
1475 (!wpa_s->driver_4way_handshake ||
56586197 1476 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
6fc6879b
JM		 1477 wpa_s->wpa_state != WPA_COMPLETED)) {
1478 /* Timeout for completing IEEE 802.1X and WPA authentication */
1479 wpa_supplicant_req_auth_timeout(
1480 wpa_s,
56586197
JM		 1481 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1482 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) ?
6fc6879b
JM		 1483 70 : 10, 0);
1484 }
1485 wpa_s->eapol_received++;
1486
1487 if (wpa_s->countermeasures) {
1488 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1489 "packet");
1490 return;
1491 }
1492
1493 /* Source address of the incoming EAPOL frame could be compared to the
1494 * current BSSID. However, it is possible that a centralized
1495 * Authenticator could be using another MAC address than the BSSID of
1496 * an AP, so just allow any address to be used for now. The replies are
1497 * still sent to the current BSSID (if available), though. */
1498
1499 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
56586197 1500 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
6fc6879b
JM		 1501 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1502 return;
1503 wpa_drv_poll(wpa_s);
1504 if (!wpa_s->driver_4way_handshake)
1505 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
56586197 1506 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
6fc6879b
JM		 1507 /*
1508 * Set portValid = TRUE here since we are going to skip 4-way
1509 * handshake processing which would normally set portValid. We
1510 * need this to allow the EAPOL state machines to be completed
1511 * without going through EAPOL-Key handshake.
1512 */
1513 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1514 }
1515}
1516
1517
1518void wpa_supplicant_sta_free_hw_features(struct wpa_hw_modes *hw_features,
1519 size_t num_hw_features)
1520{
1521 ieee80211_sta_free_hw_features(hw_features, num_hw_features);
1522}
1523
1524
1525void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1526 struct ieee80211_rx_status *rx_status)
1527{
1528 struct wpa_supplicant *wpa_s = ctx;
1529 ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1530}
1531
1532
1533/**
1534 * wpa_supplicant_driver_init - Initialize driver interface parameters
1535 * @wpa_s: Pointer to wpa_supplicant data
1536 * Returns: 0 on success, -1 on failure
1537 *
1538 * This function is called to initialize driver interface parameters.
1539 * wpa_drv_init() must have been called before this function to initialize the
1540 * driver interface.
1541 */
1542int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1543{
1544 static int interface_count = 0;
1545
1546 if (wpa_s->driver->send_eapol) {
1547 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1548 if (addr)
1549 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1550 } else {
1551 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1552 wpa_drv_get_mac_addr(wpa_s),
1553 ETH_P_EAPOL,
1554 wpa_supplicant_rx_eapol, wpa_s, 0);
1555 if (wpa_s->l2 == NULL)
1556 return -1;
1557 }
1558
1559 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1560 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1561 return -1;
1562 }
1563
1564 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1565 MAC2STR(wpa_s->own_addr));
1566
1567 if (wpa_s->bridge_ifname[0]) {
1568 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1569 " '%s'", wpa_s->bridge_ifname);
1570 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1571 wpa_s->own_addr,
1572 ETH_P_EAPOL,
1573 wpa_supplicant_rx_eapol, wpa_s,
1574 0);
1575 if (wpa_s->l2_br == NULL) {
1576 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1577 "connection for the bridge interface '%s'",
1578 wpa_s->bridge_ifname);
1579 return -1;
1580 }
1581 }
1582
1583 /* Backwards compatibility call to set_wpa() handler. This is called
1584 * only just after init and just before deinit, so these handler can be
1585 * used to implement same functionality. */
1586 if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1587 struct wpa_driver_capa capa;
1588 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1589 !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1590 WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1591 wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1592 /* Continue to allow non-WPA modes to be used. */
1593 } else {
1594 wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1595 "driver.");
1596 return -1;
1597 }
1598 }
1599
1600 wpa_clear_keys(wpa_s, NULL);
1601
1602 /* Make sure that TKIP countermeasures are not left enabled (could
1603 * happen if wpa_supplicant is killed during countermeasures. */
1604 wpa_drv_set_countermeasures(wpa_s, 0);
1605
1606 wpa_drv_set_drop_unencrypted(wpa_s, 1);
1607
1608 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1609 wpa_drv_flush_pmkid(wpa_s);
1610
1611 wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
1612 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1613 interface_count++;
1614
1615 return 0;
1616}
1617
1618
1619static int wpa_supplicant_daemon(const char *pid_file)
1620{
1621 wpa_printf(MSG_DEBUG, "Daemonize..");
1622 return os_daemonize(pid_file);
1623}
1624
1625
1626static struct wpa_supplicant * wpa_supplicant_alloc(void)
1627{
1628 struct wpa_supplicant *wpa_s;
1629
1630 wpa_s = os_zalloc(sizeof(*wpa_s));
1631 if (wpa_s == NULL)
1632 return NULL;
1633 wpa_s->scan_req = 1;
1634
1635 return wpa_s;
1636}
1637
1638
1639static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1640 struct wpa_interface *iface)
1641{
1642 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1643 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1644 iface->confname ? iface->confname : "N/A",
1645 iface->driver ? iface->driver : "default",
1646 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1647 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1648
1649 if (wpa_supplicant_set_driver(wpa_s, iface->driver) < 0) {
1650 return -1;
1651 }
1652
1653 if (iface->confname) {
1654#ifdef CONFIG_BACKEND_FILE
1655 wpa_s->confname = os_rel2abs_path(iface->confname);
1656 if (wpa_s->confname == NULL) {
1657 wpa_printf(MSG_ERROR, "Failed to get absolute path "
1658 "for configuration file '%s'.",
1659 iface->confname);
1660 return -1;
1661 }
1662 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1663 iface->confname, wpa_s->confname);
1664#else /* CONFIG_BACKEND_FILE */
1665 wpa_s->confname = os_strdup(iface->confname);
1666#endif /* CONFIG_BACKEND_FILE */
1667 wpa_s->conf = wpa_config_read(wpa_s->confname);
1668 if (wpa_s->conf == NULL) {
1669 wpa_printf(MSG_ERROR, "Failed to read or parse "
1670 "configuration '%s'.", wpa_s->confname);
1671 return -1;
1672 }
1673
1674 /*
1675 * Override ctrl_interface and driver_param if set on command
1676 * line.
1677 */
1678 if (iface->ctrl_interface) {
1679 os_free(wpa_s->conf->ctrl_interface);
1680 wpa_s->conf->ctrl_interface =
1681 os_strdup(iface->ctrl_interface);
1682 }
1683
1684 if (iface->driver_param) {
1685 os_free(wpa_s->conf->driver_param);
1686 wpa_s->conf->driver_param =
1687 os_strdup(iface->driver_param);
1688 }
1689 } else
1690 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1691 iface->driver_param);
1692
1693 if (wpa_s->conf == NULL) {
1694 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1695 return -1;
1696 }
1697
1698 if (iface->ifname == NULL) {
1699 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1700 return -1;
1701 }
1702 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1703 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1704 iface->ifname);
1705 return -1;
1706 }
1707 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1708
1709 if (iface->bridge_ifname) {
1710 if (os_strlen(iface->bridge_ifname) >=
1711 sizeof(wpa_s->bridge_ifname)) {
1712 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1713 "name '%s'.", iface->bridge_ifname);
1714 return -1;
1715 }
1716 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1717 sizeof(wpa_s->bridge_ifname));
1718 }
1719
1720 return 0;
1721}
1722
1723
1724static int wpa_supplicant_init_iface2(struct wpa_supplicant *wpa_s)
1725{
1726 const char *ifname;
1727 struct wpa_driver_capa capa;
1728
1729 wpa_printf(MSG_DEBUG, "Initializing interface (2) '%s'",
1730 wpa_s->ifname);
1731
1732 /* RSNA Supplicant Key Management - INITIALIZE */
1733 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1734 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1735
1736 /* Initialize driver interface and register driver event handler before
1737 * L2 receive handler so that association events are processed before
1738 * EAPOL-Key packets if both become available for the same select()
1739 * call. */
1740 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1741 if (wpa_s->drv_priv == NULL) {
1742 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1743 return -1;
1744 }
1745 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1746 wpa_printf(MSG_ERROR, "Driver interface rejected "
1747 "driver_param '%s'", wpa_s->conf->driver_param);
1748 return -1;
1749 }
1750
1751 ifname = wpa_drv_get_ifname(wpa_s);
1752 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1753 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
1754 "name with '%s'", ifname);
1755 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
1756 }
1757
1758 if (wpa_supplicant_init_wpa(wpa_s) < 0)
1759 return -1;
1760
1761 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
1762 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
1763 NULL);
1764 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
1765
1766 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
1767 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
1768 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
1769 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1770 "dot11RSNAConfigPMKLifetime");
1771 return -1;
1772 }
1773
1774 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
1775 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
1776 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
1777 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1778 "dot11RSNAConfigPMKReauthThreshold");
1779 return -1;
1780 }
1781
1782 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
1783 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
1784 wpa_s->conf->dot11RSNAConfigSATimeout)) {
1785 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1786 "dot11RSNAConfigSATimeout");
1787 return -1;
1788 }
1789
1790 if (wpa_supplicant_driver_init(wpa_s) < 0)
1791 return -1;
1792
1793 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
1794
116654ce
JM		 1795 if (wpas_wps_init(wpa_s))
1796 return -1;
1797
6fc6879b
JM		 1798 if (wpa_supplicant_init_eapol(wpa_s) < 0)
1799 return -1;
1800 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
1801
1802 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
1803 if (wpa_s->ctrl_iface == NULL) {
1804 wpa_printf(MSG_ERROR,
1805 "Failed to initialize control interface '%s'.\n"
1806 "You may have another wpa_supplicant process "
1807 "already running or the file was\n"
1808 "left by an unclean termination of wpa_supplicant "
1809 "in which case you will need\n"
1810 "to manually remove this file before starting "
1811 "wpa_supplicant again.\n",
1812 wpa_s->conf->ctrl_interface);
1813 return -1;
1814 }
1815
1816 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
1817 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1818 wpa_s->use_client_mlme = 1;
1819 if (ieee80211_sta_init(wpa_s))
1820 return -1;
1821 }
1822 if (capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)
1823 wpa_s->driver_4way_handshake = 1;
1824 }
1825
1826 return 0;
1827}
1828
1829
1830static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
1831{
1832 if (wpa_s->drv_priv) {
1833 wpa_supplicant_deauthenticate(wpa_s,
1834 WLAN_REASON_DEAUTH_LEAVING);
1835
1836 /* Backwards compatibility call to set_wpa() handler. This is
1837 * called only just after init and just before deinit, so these
1838 * handler can be used to implement same functionality. */
1839 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
1840 wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
1841 "driver.");
1842 }
1843
1844 wpa_drv_set_drop_unencrypted(wpa_s, 0);
1845 wpa_drv_set_countermeasures(wpa_s, 0);
1846 wpa_clear_keys(wpa_s, NULL);
1847 }
1848
1849 wpas_dbus_unregister_iface(wpa_s);
1850
1851 wpa_supplicant_cleanup(wpa_s);
1852
1853 if (wpa_s->drv_priv)
1854 wpa_drv_deinit(wpa_s);
1855}
1856
1857
1858/**
1859 * wpa_supplicant_add_iface - Add a new network interface
1860 * @global: Pointer to global data from wpa_supplicant_init()
1861 * @iface: Interface configuration options
1862 * Returns: Pointer to the created interface or %NULL on failure
1863 *
1864 * This function is used to add new network interfaces for %wpa_supplicant.
1865 * This can be called before wpa_supplicant_run() to add interfaces before the
1866 * main event loop has been started. In addition, new interfaces can be added
1867 * dynamically while %wpa_supplicant is already running. This could happen,
1868 * e.g., when a hotplug network adapter is inserted.
1869 */
1870struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
1871 struct wpa_interface *iface)
1872{
1873 struct wpa_supplicant *wpa_s;
1874
1875 if (global == NULL || iface == NULL)
1876 return NULL;
1877
1878 wpa_s = wpa_supplicant_alloc();
1879 if (wpa_s == NULL)
1880 return NULL;
1881
1882 if (wpa_supplicant_init_iface(wpa_s, iface) ||
1883 wpa_supplicant_init_iface2(wpa_s)) {
1884 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
1885 iface->ifname);
1886 wpa_supplicant_deinit_iface(wpa_s);
1887 os_free(wpa_s);
1888 return NULL;
1889 }
1890
1891 wpa_s->global = global;
1892
1893 /* Register the interface with the dbus control interface */
1894 if (wpas_dbus_register_iface(wpa_s)) {
1895 wpa_supplicant_deinit_iface(wpa_s);
1896 os_free(wpa_s);
1897 return NULL;
1898 }
1899
1900 wpa_s->next = global->ifaces;
1901 global->ifaces = wpa_s;
1902
1903 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
1904
1905 return wpa_s;
1906}
1907
1908
1909/**
1910 * wpa_supplicant_remove_iface - Remove a network interface
1911 * @global: Pointer to global data from wpa_supplicant_init()
1912 * @wpa_s: Pointer to the network interface to be removed
1913 * Returns: 0 if interface was removed, -1 if interface was not found
1914 *
1915 * This function can be used to dynamically remove network interfaces from
1916 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
1917 * addition, this function is used to remove all remaining interfaces when
1918 * %wpa_supplicant is terminated.
1919 */
1920int wpa_supplicant_remove_iface(struct wpa_global *global,
1921 struct wpa_supplicant *wpa_s)
1922{
1923 struct wpa_supplicant *prev;
1924
1925 /* Remove interface from the global list of interfaces */
1926 prev = global->ifaces;
1927 if (prev == wpa_s) {
1928 global->ifaces = wpa_s->next;
1929 } else {
1930 while (prev && prev->next != wpa_s)
1931 prev = prev->next;
1932 if (prev == NULL)
1933 return -1;
1934 prev->next = wpa_s->next;
1935 }
1936
1937 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
1938
1939 wpa_supplicant_deinit_iface(wpa_s);
1940 os_free(wpa_s);
1941
1942 return 0;
1943}
1944
1945
1946/**
1947 * wpa_supplicant_get_iface - Get a new network interface
1948 * @global: Pointer to global data from wpa_supplicant_init()
1949 * @ifname: Interface name
1950 * Returns: Pointer to the interface or %NULL if not found
1951 */
1952struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
1953 const char *ifname)
1954{
1955 struct wpa_supplicant *wpa_s;
1956
1957 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
1958 if (os_strcmp(wpa_s->ifname, ifname) == 0)
1959 return wpa_s;
1960 }
1961 return NULL;
1962}
1963
1964
1965/**
1966 * wpa_supplicant_init - Initialize %wpa_supplicant
1967 * @params: Parameters for %wpa_supplicant
1968 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
1969 *
1970 * This function is used to initialize %wpa_supplicant. After successful
1971 * initialization, the returned data pointer can be used to add and remove
1972 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
1973 */
1974struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
1975{
1976 struct wpa_global *global;
1977 int ret;
1978
1979 if (params == NULL)
1980 return NULL;
1981
1982 wpa_debug_open_file(params->wpa_debug_file_path);
1983
1984 ret = eap_peer_register_methods();
1985 if (ret) {
1986 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1987 if (ret == -2)
1988 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
1989 "the same EAP type.");
1990 return NULL;
1991 }
1992
1993 global = os_zalloc(sizeof(*global));
1994 if (global == NULL)
1995 return NULL;
1996 global->params.daemonize = params->daemonize;
1997 global->params.wait_for_monitor = params->wait_for_monitor;
1998 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
1999 if (params->pid_file)
2000 global->params.pid_file = os_strdup(params->pid_file);
2001 if (params->ctrl_interface)
2002 global->params.ctrl_interface =
2003 os_strdup(params->ctrl_interface);
2004 wpa_debug_level = global->params.wpa_debug_level =
2005 params->wpa_debug_level;
2006 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2007 params->wpa_debug_show_keys;
2008 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2009 params->wpa_debug_timestamp;
2010
2011 if (eloop_init(global)) {
2012 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2013 wpa_supplicant_deinit(global);
2014 return NULL;
2015 }
2016
2017 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2018 if (global->ctrl_iface == NULL) {
2019 wpa_supplicant_deinit(global);
2020 return NULL;
2021 }
2022
2023 if (global->params.dbus_ctrl_interface) {
2024 global->dbus_ctrl_iface =
2025 wpa_supplicant_dbus_ctrl_iface_init(global);
2026 if (global->dbus_ctrl_iface == NULL) {
2027 wpa_supplicant_deinit(global);
2028 return NULL;
2029 }
2030 }
2031
2032 return global;
2033}
2034
2035
2036/**
2037 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2038 * @global: Pointer to global data from wpa_supplicant_init()
2039 * Returns: 0 after successful event loop run, -1 on failure
2040 *
2041 * This function starts the main event loop and continues running as long as
2042 * there are any remaining events. In most cases, this function is running as
2043 * long as the %wpa_supplicant process in still in use.
2044 */
2045int wpa_supplicant_run(struct wpa_global *global)
2046{
2047 struct wpa_supplicant *wpa_s;
2048
2049 if (global->params.daemonize &&
2050 wpa_supplicant_daemon(global->params.pid_file))
2051 return -1;
2052
2053 if (global->params.wait_for_monitor) {
2054 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2055 if (wpa_s->ctrl_iface)
2056 wpa_supplicant_ctrl_iface_wait(
2057 wpa_s->ctrl_iface);
2058 }
2059
2060 eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2061 eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2062
2063 eloop_run();
2064
2065 return 0;
2066}
2067
2068
2069/**
2070 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2071 * @global: Pointer to global data from wpa_supplicant_init()
2072 *
2073 * This function is called to deinitialize %wpa_supplicant and to free all
2074 * allocated resources. Remaining network interfaces will also be removed.
2075 */
2076void wpa_supplicant_deinit(struct wpa_global *global)
2077{
2078 if (global == NULL)
2079 return;
2080
2081 while (global->ifaces)
2082 wpa_supplicant_remove_iface(global, global->ifaces);
2083
2084 if (global->ctrl_iface)
2085 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2086 if (global->dbus_ctrl_iface)
2087 wpa_supplicant_dbus_ctrl_iface_deinit(global->dbus_ctrl_iface);
2088
2089 eap_peer_unregister_methods();
2090
2091 eloop_destroy();
2092
2093 if (global->params.pid_file) {
2094 os_daemonize_terminate(global->params.pid_file);
2095 os_free(global->params.pid_file);
2096 }
2097 os_free(global->params.ctrl_interface);
2098
2099 os_free(global);
2100 wpa_debug_close_file();
2101}
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